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HomeMy WebLinkAboutIOWA RIVER POWERHOUSE DAM REPAIR PROJECT 2025IOWA RIVER POWERHOUSE DAM REPAIR PROJECT 2025 2025-Jun-30 Project manual, plans, specs 2025-Jul-08 Res No. 25-165: Setting public hearing 2025-Aug-05 Res No. 25-191: Approving project manual & estimate of cost 2025-Aug-07 Notice to bidders 2025-Sep-02 Res No. 25-212: Rejecting bids received 08/26/25 & setting a new date for receipt of bids for the rebidding of the project 2025-Sep-04 Notice to bidders 2025-Oct-21 Res No. 25-247: Rejecting all bids received IV :.3 4 ,::. WJ Pf"i f � i6� 6a� -0 IT CITY OF IOWA CITY UNESCO CITY OF LITERATURE PUBLIC WORKS DEPARTMENT ENGINEERING DIVISION PROJECT MANUAL FOR THE FORMAL IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA July 8, 2025 00055 , } t.a r - CERTIFICATIONS PAGE' I hereby certify that this engineering document was prepared by me or under my direct personal supervision and that I am a duly licensed Professional Engineer under the laws of the State of Iowa. r„HNe+na„4r Q�q> ESSIpt;�` ,,,Y 06/30/2025 OR S ��� Tor Ha en Date z j HANSEN Sot 21913 License Number: P21913 My license renewal date Is December 31, 20 26 Pages or sheets covered by this seal Special Provisions 0�1 illy ,4'' HOFRICHTER24665 = A = I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT WAS PREPARED BY ME OR UNDER MY DIRECT PERSONAL SUPERVISION AND THAT I AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF IOWA, FOR ORIGIN DE//SII,GN CO. U� NOAH HOFRICHTER DATE 2466s 12l31/2025 LICENSE NUMBER RENEWAL DATE PAGES OR SHEETS COVERED BY THIS CERTIFICATION- Entire Bound Document, Except Special Provisions Iowa River Powerhouse Dam Repair Project 0005 — Page 1 of 1 0010 TABLE OF CONTENTS PROJECT MANUAL 0005 CERTIFICATIONS PAGE 0010 TABLE OF CONTENTS 0100 NOTICE TO BIDDERS 0110 NOTICE OF PUBLIC HEARING 0200 INSTRUCTIONS TO BIDDERS 0400 PROPOSAL 0405 BIDDER STATUS FORM 0410 BID BOND FORM 0500 CONTRACT 0510 PERFORMANCE, PAYMENT, AND MAINTENANCE BOND 0520 CONTRACT COMPLIANCE 0530 WAGE THEFT POLICY SUDAS STANDARD SPECIFICATIONS GENERAL SUPPLEMENTAL SPECIFICATIONS SUPPLEMENTAL SPECIFICATIONS SPECIAL PROVISIONS .��.:08 s i i PROJECT REFERENCE DOCUMENTS (INCLUDED FOR INFORMATION ONLY AND HAVE NOT BEEN PREPARED UNDER THE CERTIFICATION OF THIS PROJECT MANUAL): 2021 DIVE INSPECTION REPORT 2024 DIVE INSPECTION REPORT 2003 DAM RENOVATION PLANS Iowa River Powerhouse Dam Repair Project 0010 — Page 1 of 1 0100 NOTICE TO BIDDERS IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 3:00 p.m. on August 28, 2025. Sealed proposals will be opened immediately thereafter. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 2nd day of September, 2025, or at special meeting called for that purpose. The Project will involve the following: Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. All work is to be done in strict compliance with the Project Manual prepared by Origin Design Co., of Dubuque, Iowa, which has heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be submitted in a sealed envelope. In addition, a separate sealed envelope shall be submitted containing a completed Bidder Status Form and a bid security executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City (in the form shown in Section 0510) ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. The City shall retain the bid security furnished by the successful bidder until the approved contract has been executed, the required Performance, Payment, and Maintenance Bond (as shown in Section 0510) has been filed by the bidder guaranteeing the performance of the contract, and the contract and security have been approved by the City. The City shall promptly return the checks or bidder's bonds of unsuccessful bidders to the bidders as soon as the successful bidder is determined or within thirty days, whichever is sooner. The successful bidder will be required to furnish a Performance, Payment, and Maintenance Bond in an amount equal to one hundred percent (100%) of the contract price and in the form shown in Section 0510, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of two (2) years from and after its completion and formal acceptance by the City Council. Iowa River Powerhouse Dam Repair Project 0100 — Page 1 of 2 The following limitations shall apply to this Project: Specified Start Date: 2025 Construction Window: September 12, 2025-November 15, 2025 2026 Construction Window: May 1, 2026-October 31, 2026 Final Completion Date: All work to be completed within 90 days after mobilization of the site and within the dates shown above. Liquidated Damages: $1,000.00 per day The Project Manual may be examined at the office of the City Clerk. Copies thereof and blank forms may be secured at the office of Technigraphics, a division of Rapids Reproductions located at 415 Highland Ave, Suite 100, Iowa City, Iowa 52240 (319) 3554-5950. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of Targeted Small Business contractors can be obtained from the Iowa Department of Administrative Services at (515) 242-5120. Bidders shall list on the Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall list on the Contract its subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Posted upon order of the City Council of Iowa City, Iowa. KELLIE GRACE, CITY CLERK Iowa River Powerhouse Dam Repair Project 0100 — Page 2 of 2 0110 NOTICE OF PUBLIC HEARING 75 �;1j: q: 0 NOTICE OF PUBLIC HEARING ON PROJECT MANUAL AND ESTIMATED COST FOR THE IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IN THE CITY OF IOWA CITY, IOWA TO ALL TAXPAYERS OF THE CITY OF IOWA CITY, IOWA, AND TO OTHER INTERESTED PERSONS: Public notice is hereby given that the City Council of the City of Iowa City, Iowa, will conduct a public hearing on the Project Manual, including the plans, specifications, contract, and estimated cost for the construction of the Iowa River Powerhouse Dam Repair Project in said city at 6:00 p.m. on the 5th day of August, 2025, said meeting to be held in the Emma J. Harvat Hall in the City Hall, 410 East Washington Street in said city, or if said meeting is cancelled, at the next meeting of the City Council thereafter as posted by the City Clerk. This project includes repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs, and is located at the Iowa River Powerhouse Dam. Said Project Manual and estimated cost are now on file in the office of the City Clerk in the City Hall in Iowa City, Iowa, and may be inspected by any interested persons. Any interested persons may appear at said meeting of the City Council for the purpose of making objections to and comments concerning said Project Manual or the cost of making said improvement. This notice is given by order of the City Council of the City of Iowa City, Iowa and as provided by law. Kellie K. Grace, City Clerk Iowa River Powerhouse Dam Repair Project 0110 — Page 1 of 1 0200 INSTRUCTIONS TO BIDDERS Iowa River Powerhouse Dam Repair Project 1. Pre -Bid Meeting: August 21, 2025, 11:00 A.M. 2. Bid Submittals: a. Time, Date and Location: August 28, 2025, 3:00 P.M. City Clerk's Office 410 East Washington Street Iowa City, Iowa 52240 b. Submittals include two separate sealed envelopes: Envelope 1: Bid Security and Bidder Status Form Envelope 2: Proposal C. See Section 1020, as may be supplemented, for complete descriptions of proposal requirements and conditions. 3. Bidder Status: a. Use the Bidder Status Form included in Section 0405. b. Submit in accordance with 0200.2.b above. C. See Section 0405 for the Worksheet: Authorized to Transact Business and 875 Iowa Administrative Code Chapter 156 (73A), found at the following website: https://www.legis.iowa.gov/docs/iac/chapter/08-15-2018.875.156.pdf, for assistance in completing the form. 4. Bid Security: a. Use the Bid Bond Form included in Section 0410. b. Submit in accordance with 0200.2.b above. C. Bid security is 10% of the total bid, including all added alternates (do not deduct the amount of deducted alternates). d. See Section 1020, as may be supplemented, for a complete description of the bid security requirements. 5. Progress and Schedule: a. Contract Times: Specified Start Date: 2025 Construction Window: September 12, 2025-November 15, 2025 2026 Construction Window: May 1, 2026-October 31, 2026 Final Completion Date: All work to be completed within 90 days after mobilization of the site and within the dates shown above. Liquidated Damages: $1,000.00 per day b. Work Restrictions: i. No work shall be done between 10:00 pm and 7:00 am without the approval of the Engineer, with the exception of saw cutting freshly poured concrete. ii. Notify the Engineer four days in advance of street closings so that a press release can be issued. No street may be closed without the Engineer's approval and said notification. Iowa River Powerhouse Dam Repair Project 0200 — Page 1 of 2 C. Community Events: i. The Contractor should look at community calendars to determine potential conflicts with planned construction activities and schedule. ii. The Contractor should make sure their activities are not impacting community events. iii. No work shall occur on University of Iowa Home Football game days. 6. Performance, Payment and Maintenance Bond: a. The successful bidder will be required to furnish a bond in an amount equal to one hundred percent (100%) of the contract price for a period of two (2) years after its completion and formal acceptance by the City Council. b. Use the Performance, Payment, and Maintenance Bond Form included in Section 0510. C. See Section 1070, Part 3, as may be supplemented, for a complete description of the bonding requirements. 7. Insurance Requirements: a. The City of Iowa City is to be listed on the required insurance certificate, as an additional insured on a primary and non-contributory basis. Review this requirement with your insurance broker prior to bidding. b. See Section 1070, Part 3, as may be supplemented, for a complete description of the insurance requirements. 8. Taxes: a. Sales Tax Exemption Certificates will be issued according to Section 1020, 1.08 of the Supplemental Specifications. 9. Contract Compliance: a. For all contracts of $25,000 or more, the successful bidder shall abide by the requirements of the City's Contract Compliance Program, as described in the , rtion 0520_ 10. Wage Theft Policy: a. For all contracts of $25,000 or more, the successful bidder shall abide by the requirements of the City's Wage Theft Policy, as described in Section 0530. 11. References: a. The successful bidder and all of its subcontractors are required to submit at least four (4) days prior to award three (3) references involving similar projects, including at least one municipal reference. Award of the bid or use of specific subcontractors may be denied if sufficient favorable references are not verified or based on past experience on projects with the City of Iowa City. b. References shall be addressed to the City Engineer and include the name, address and phone number of the contact person, for City verification. 12. Contract Documentation: a. The Contractor must use a web -based software package for purposes of hosting and managing project communication and documentation until Final Completion. Web -based software packages include (but are not limited to) Doc Express (preferred), Submittal Exchange or Procore. b. Record documentation is required on all projects in accordance with Section 1090, 1.08.E of the Supplemental Specifications. Liquidated damages will be considered if adequate record documentation is not submitted by the Final Completion Date. Iowa River Powerhouse Dam Repair Project 0200 — Page 2 of 2 INSERT IN ENVELOPE 2 0400 PROPOSAL IOWA RIVER POWERHOUSE DAM REPAIR PROJECT CITY OF IOWA CITY Please DO NOT USE the proposal included in the bound volume of the specifications. Separate copies of this form are contained with this document. The following documents must be submitted as printed. No alterations, additions, or deletions are allowed. If the Bidder notes a requirement in the contract documents that the Bidder believes will require a conditioned or unsolicited alternate bid, the Bidder must immediately notify the Engineer in writing. The Engineer will issue any necessary interpretation by an addendum. Name of Bidder: Address of Bidder: TO: City Clerk City of Iowa City City Hall 410 East Washington Street Iowa City, Iowa 52240 The undersigned bidder submits herewith bid security in the amount of $ , in accordance with the terms set forth in the Project Manual. The undersigned bidder, having examined and determined the scope of the Contract, hereby proposes to provide the required labor, services, materials and equipment and to perform the Project as described in the Project Manual, including Addenda and , and to do all work at the prices set forth herein. The undersigned bidder further proposes to do all "Extra Work" which may be required to complete the work contemplated, at unit prices or lump sums to be agreed upon in writing prior to starting such work. The undersigned bidder certifies that this proposal is made in good faith, and without collusion or connection with any other person or persons bidding on the work. The undersigned bidder states that this proposal is made in conformity with the Contract and agrees that, in the event of any discrepancies or differences between the various items included in the Contract, Supplemental Specification Section 1040, 1.03 shall govern. Iowa River Powerhouse Dam Repair Project 0400 — Page 1 of 4 INSERT IN ENVELOPE 2 ITEM ITEM CODE BID ITEM DESCRIPTION QUANTITY UNITS NO. 1 2102-0425070 SPECIAL BACKFILL 225 TON 2 2123-7450020 SHOULDER FINISHING, EARTH 8 STA 3 2507-6800000 MATERIAL FOR FILTER BLANKET 10 TON' 4 2519-3300700 FENCE, TEMPORARY 2540 LF 5 2599-9999003 SPILLWAY VOID FILL 50 CY 6 2599-9999005 INSPECTION HOLES 13 EA 7 2599-9999010 PRE -CONSTRUCTION SURVEY 1 LS 8 2599-9999010 WATER CONTROL 1 LS 9 2599-9999010 LEFT ABUTMENT VOID REPAIR 1 LS 10 2599-9999010 MUSSEL SURVEY 1 LS 11 2599-9999014 SHALLOW CONCRETE REPAIR (DEPTHS: 0" TO 15 SF 3") 12 2599-9999014 SHALLOW TO MODERATE CONCRETE REPAIR 115 SF WITH REBAR (DEPTHS: 3" TO 20") 13 2599-9999022 UNDERMINING REPAIRS (PIER 1 & LEFT 237 CF ABUTMENT) 14 2602-0000212 FLOATING SILT CURTAIN (HANGING) 400 LF 15 2602-0000222 FLOATING SILT CURTAIN (CONTAINMENT) 400 LF 16 2602-0000230 CLEAN OUT OF FLOATING SILT CURTAIN 400 LF (CONTAINMENT) 17 2602-0000240 MAINTENANCE OF FLOATING SILT CURTAIN 400 LF 18 2010-1-D-1 TOPSOIL, ON -SITE 140 CY 19 7030-A-2 REMOVAL OF SHARED USE PATH 500 SY 20 7030-C SHARED USE PATH, HMA, 6 IN 500 SY 21 8030-A TEMPORARY TRAFFIC CONTROL 1 LS 22 9010-A-1 CONVENTIONAL SEEDING, SEEDING, 0.2 AC FERTILIZING, AND MULCHING, TYPE 4 23 9040-A-2 SWPPP MANAGEMENT 1 LS 24 9040-F-1 WATTLE, PERIMETER AND SLOPE SEDIMENT 2510 LF CONTROL DEVICE, 9 IN DIA 25 9040-F-2 WATTLE, REMOVAL 2510 LF 26 9040-J RIP RAP, CLASS B 30 TON 27 9040-0-1 TRACK OUT CONTROL 115 SY 28 9040-Y EROSION CONTROL MOBILIZATION 3 EA 29 11,020-A MOBILIZATION 1 LS TOTAL The Bidder may submit computer -generated unit price table in accordance with the Special Provisions. TOTAL Iowa River Powerhouse Dam Repair Project 0400 — Page 2 of 4 INSERT IN ENVELOPE 2 The names of those persons, firms, companies or other parties with whom we intend to enter into a subcontract, together with the type of subcontracted work and approximate dollar amount of the subcontract, are as follows: NOTE: All subcontractors are subject to approval by City of Iowa City. Iowa River Powerhouse Dam Repair Project 0400 — Page 3 of 4 INSERT IN ENVELOPE 2 The undersigned Bidder is a/an: ❑ Individual, Sole Proprietorship ❑ Partnership "•.fir #' ": 't � ❑ Corporation ❑ Limited Liability Company ❑ Joint venture i ❑ Other Its Public Registration Number issued by the Iowa Commissioner of Labor, pursuant to Section 91 C.5 of the Iowa Code is: Failure to provide said Registration Number shall result in the bid being read under advisement. A contract will not be executed until the Contractor is registered to do business in the State of Iowa. Bidder's Name Signature Printed Name Title Street Address City, State, Zip Code Telephone Number NOTE: The signature on this proposal must be an original signature in ink; copies, facsimiles, or electronic signatures will not be accepted. Iowa River Powerhouse Dam Repair Project 0400 — Page 4 of 4 INSERT IN ENVELOPE 1 0405 BIDDER STATUS FORM - All bidders must submit the following completed form to the governmental body requesting bids per 8751owa Administrave Gode,'Coter 156. To be completed by all bidders Part A ❑ Yes ❑ No My company is authorized to transact business in Iowa. (To help you determine if your company is authorized, please review the Worksheet.- Authorization to Transact Business). ❑ Yes ❑ No My company has an office to transact business in Iowa. ❑ Yes ❑ No My company's office in Iowa is suitable for more than receiving mail, telephone calls, and e-mail. ❑ Yes ❑ No My company has been conducting business in Iowa for at least 3 years prior to the first request for bids on this project. ❑ Yes ❑ No My company is not a subsidiary of another business entity or my company is a subsidiary of another business entity that would qualify as a resident bidder in Iowa. If you answered "Yes" for each question above, your company qualifies as a resident bidder. Please complete Parts B and D of this form. If you answered "No" to one or more questions above, your company is a non-resident bidder. Please complete Parts C and D of this form. To be completed by resident bidders Part B Dates: to Address: (mm/dd/yyyy) City, State, Zip Code: Dates: to Address: (mm/dd/yyyy) City, State, Zip Code: Dates: to Address: (mm/dd/yyyy) City, State, Zip Code: You may attach additional sheet(s) if needed. To be completed by non-resident bidders Part C 1. Name of home state or foreign country reported to the Iowa Secretary of State: 2. Does your company's home state or foreign country offer preference to bidders who are residents? ❑ Yes ❑ No 3. If you answered "Yes" to question 2, identify each preference offered by your company's home state or foreign country and the appropriate legal citation. You may attach additional sheet(s) if needed. To be completed by all bidders Part D I certify that the statements made on this document are true and complete to the best of my knowledge and I know that my failure to provide accurate and truthful information may be a reason to reject my bid. Finn Name: Signature: Date: Iowa River Powerhouse Dam Repair Project 0405 — Page 1 of 2 INSERT IN ENVELOPE 1 WORKSHEET: AUTHORIZATION TO TRANSACT BUSINESS This worksheet may be used to help complete Part A of the Resident Bidder Status form_ If at least one of the following describes your business, you are authorized to transact business in Iowa. ❑ Yes ❑ No My business is currently registered as a contractor with the Iowa Division of Labor. ❑ Yes ❑ No My business is a sole proprietorship and I am an Iowa resident for Iowa income tax purposes. ❑ Yes ❑ No My business is a general partnership or joint venture. More than 50 percent of the general partners or joint venture parties are residents of Iowa for Iowa income tax purposes. ❑ Yes ❑ No My business is an active corporation with the Iowa Secretary of State and has paid all fees required by the Secretary of State, has filed its most recent biennial report, and has not filed articles of dissolution. ❑ Yes ❑ No My business is a corporation whose articles of incorporation are filed in a state other than Iowa, the corporation has received a certificate of authority from the Iowa Secretary of State, has filed its most recent biennial report with the Secretary of State, and has neither received a certificate of withdrawal from the Secretary of state nor had its authority revoked. ❑ Yes ❑ No My business is a limited liability partnership which has filed a statement of qualification in this state and the statement has not been canceled. ❑ Yes ❑ No My business is a limited liability partnership which has filed a statement of qualification in a state other than Iowa, has filed a statement of foreign qualification in Iowa and a statement of cancellation has not been filed. ❑ Yes ❑ No My business is a limited partnership or limited liability limited partnership which has filed a certificate of limited partnership in this state, and has not filed a statement of termination. ❑ Yes ❑ No My business is a limited partnership or a limited liability limited partnership whose certificate of limited partnership is filed in a state other than Iowa, the limited partnership or limited liability limited partnership has received notification from the Iowa Secretary of state that the application for certificate of authority has been approved and no notice of cancellation has been filed by the limited partnership or the limited liability limited partnership. ❑ Yes ❑ No My business is a limited liability company whose certificate of organization is filed in Iowa and has not filed a statement of termination. ❑ Yes ❑ No My business is a limited liability company whose certificate of organization is filed in a state other than Iowa, has received a certificate of authority to transact business in Iowa and the certificate has not been revoked or canceled. Iowa River Powerhouse Dam Repair Project 0405 — Page 2 of 2 INSERT IN ENVELOPE 1 0410 BID BOND FORM IOWA RIVER POWERHOUSE DAM REPAIR PROJECT = w; 0 CITY OF IOWA CITY as Principal, and as Surety declare that we are held and are firmly bound unto the City of Iowa City, Iowa, hereinafter called "OWNER," in the amount of to pay said sum as herein provided. We as Principal and Surety further promise and declare that these obligations shall bind our heirs, executors, administrators, and successors jointly and severally. This obligation is conditioned on the Principal submission of the accompanying bid, dated for Iowa River Powerhouse Dam Repair Project. NOW, THEREFORE, (a) If said Bid shall be rejected, or in the alternate, (b) If said Bid shall be accepted and the Principal shall execute and deliver a contract in the form specified, and the Principal shall then furnish a security for the Principal's faithful performance of said Project, and for the payment of all persons performing labor or furnishing materials in connection therewith, and shall in all other respects perform the Project, as agreed to by the City's acceptance of said Bid, then this obligation shall be void. Otherwise this obligation shall remain in full force and effect, provided that the liability of the Surety for any and all claims hereunder shall, in no event, exceed the amount of the obligation stated herein. By virtue of statutory authority, the full amount of this bid security shall be forfeited to the Owner in the event that the Principal fails to execute the contract and provide the security, as provided in the Project Manual or as required by law. The Surety, for value received, hereby stipulates and agrees that the obligations of said Surety and its security shall in no way be impaired or affected by any extension of the time within which the Owner may accept such Bid or may execute such contract documents, and said Surety does hereby waive notice of any such time extension. The Principal and the Surety hereto execute this bid security this of , A.D., 20_ Witness Witness in By: Principal Surety (Attorney -in -fact) Attach Power -of -Attorney, if applicable day (Seal) (Title) (Seal) Iowa River Powerhouse Dam Repair Project 0410 — Page 1 of 1 0500 CONTRACT IOWA RIVER POWERHOUSE DAM REPAIR PROJECT J PI-1 CITY OF IOWA CITY This Contract is made and entered into by and between the City of Iowa City, Iowa ("City"), and ("Contractor"). Whereas, the City has prepared certain Plans, Specifications, Proposal and Contract dated the day of 2025, for the Iowa River Powerhouse Dam Repair Project ("Project"), and Whereas, the City publicly solicited bids for construction of said Project; and Whereas, Contractor submitted a bid on the Project described in said Project Manual; and Whereas, the parties hereto now wish to enter into this Contract for the construction of said Project. Now, therefore, it is agreed: 1. The Contractor hereby agrees to perform the Project for the sums listed in its Proposal including the total extended amount of $ which sums are incorporated herein by this reference. 2. This Contract consists of the Contract Documents, as defined in the Section 1010, 1.03, and the following additional component parts which are incorporated herein by reference: a. Contractor's Completed Bidder Status Form; attached hereto; and b. Contractor's Completed Contract Compliance Program (Anti - Discrimination Requirements) Assurance, if applicable, pursuant to Section 0200, attached hereto; and C. Contractor's Completed Wage Theft Affidavit, if applicable, pursuant to Section 0200, attached hereto. The above components are deemed complementary and what is called for by one shall be as binding as if called for by all. Iowa River Powerhouse Dam Repair Project 0500 — Page 1 of 2 3. The names of those persons, firms, companies or other parties, acknowledged by the City, with whom we intend to enter into a subcontract, together with the type of subcontracted work and approximate dollar amount of the subcontract, are as follows (or shown on an attachment): DATED this day of 20 (The City of Iowa City will date this Contract after all signatures are obtained) Citv Contractor Signature of City Official Signature of Contractor Officer Printed Name of City Official ATTEST: City Clerk (for Formal Projects only) APPROVED BY: City Attorney's Office Printed Name of Contractor Officer Title of Contractor Officer ATTEST: By: (Company Official) Iowa River Powerhouse Dam Repair Project 0500 — Page 2 of 2 0510 PERFORMANCE, PAYMENT, AND MAINTENANCE BOND Itj j 311 , c IOWA RIVER POWERHOUSE DAM REPAIR PROJECT CITY OF IOWA CITY Know All by These Presents: That we, as Principal (hereinafter the "Contractor" or "Principal") and , as Surety are held and firmly bound unto City of Iowa City, Iowa, as Obligee (hereinafter referred to as "the Jurisdiction"), and to all persons who may be injured by any breach of any of the conditions of this Bond in the penal sum of dollars ($ ), lawful money of the United States, for the payment of which sum, well and truly to be made, we bind ourselves, our heirs, legal representatives and assigns, jointly or severally, firmly by these presents. The conditions of the above obligations are such contract with the Jurisdiction, bearing date the , (hereinafter the "Contract") wherein construct the following described improvements: that whereas said Contractor entered into a day said Contractor of undertakes and agrees to Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. To faithfully perform all the terms and requirements of said Contract within the time therein specified, in a good and workmanlike manner, and in accordance with the Contract Documents. It is expressly understood and agreed by the Contractor and Surety in this bond that the following provisions are a part of this Bond and are binding upon said Contractor and Surety, to -wit: Performance: The Contractor shall well and faithfully observe, perform, fulfill, and abide by each and every covenant, condition, and part of said Contract, by reference made a part hereof, for the above referenced improvements, and shall indemnify and save harmless the Jurisdiction from all outlay and expense incurred by the Jurisdiction by reason of the Contractor's default of failure to perform as required. The Contractor shall also be responsible for the default or failure to perform as required under the Contract and Contract Documents by all its subcontractors, suppliers, agents, or employees furnishing materials or providing labor in the performance of the Contract. 2. Payment: The Contractor and the Surety on this Bond hereby agreed to pay all just claims submitted by persons, firms, subcontractors, and corporations furnishing materials for or performing labor in the performance of the Contract on account of which this Bond is given, including but not limited to claims for all amounts due for labor, materials, lubricants, oil, gasoline, repairs on machinery, equipment, and tools, consumed or used by the Contractor or any subcontractor, wherein the same are not satisfied out of the portion of the contract price the Jurisdiction is required to retain until completion of the improvement, but the Contractor and Surety shall not be liable to said persons, firms, or corporations unless the claims of said claimants against said portion of the contract price shall have been Iowa River Powerhouse Dam Repair Project 0510 — Page 1 of 4 A established as provided by law. The Contractor and Surety hereby bind themselves to the obligations and conditions set forth in Chapter 573 of the Iowa Code, which by this reference is made a part hereof as though fully set out herein. 3. Maintenance: The Contractor and the Surety on this Bond hereby agree, at their own expense: A. To remedy any and all defects that may develop in or result from work to be performed under the Contract within the period of two years (2) from the date of acceptance of the work under the Contract, by reason of defects in workmanship or materials used in construction of said work; B. To keep all work in continuous good repair; and C. To pay the Jurisdiction's reasonable costs of monitoring and inspection to assure that any defects are remedied, and to repay the Jurisdiction all outlay and expense incurred as a result of Contractor's and Surety's failure to remedy any defect as required by this section. 4. General: Every Surety on this Bond shall be deemed and held bound, any contract to the contrary notwithstanding, to the following provisions: A. To consent without notice to any extension of time to the Contractor in which to perform the Contract; B. To consent without notice to any change in the Contract or Contract Documents, which thereby increases the total contract price and the penal sum of this bond, provided that all such changes do not, in the aggregate, involve an increase of more than 20% of the total contract price, and that this bond shall then be released as to such excess increase; and C. To consent without notice that this Bond shall remain in full force and effect until the Contract is completed, whether completed within the specified contract period, within an extension thereof, or within a period of time after the contract period has elapsed and the liquidated damage penalty is being charged against the Contractor. D. That no provision of this Bond or of any other contract shall be valid that limits to less than two years (2) after the acceptance of the work under the Contract the right to sue on this Bond. E. That as used herein, the phrase "all outlay and expense" is not to be limited in any way, but shall include the actual and reasonable costs and expenses incurred by the Jurisdiction including interest, benefits, and overhead where applicable. Accordingly, "all outlay and expense" would include but not be limited to all contract or employee expense, all equipment usage or rental, materials, testing, outside experts, attorneys fees (including overhead expenses of the Jurisdiction's staff attorneys), and all costs and expenses of litigation as they are incurred by the Jurisdiction. It is intended the Contractor and Surety will defend and indemnify the Jurisdiction on all claims made against the Jurisdiction on account of Contractor's failure to perform as required in the Contract and Contract Documents, that all agreements and promises set forth in the Contract and Contract Documents, in approved change orders, and in this Bond will be fulfilled, and that the Jurisdiction will be fully indemnified so that it will be put into the position it would have been in had the Contract been performed in the first instance as required. Iowa River Powerhouse Dam Repair Project 0510 — Page 2 of 4 In the event the Jurisdiction incurs any "outlay and expense" in defending itself against any claim as to which the Contractor or Surety should have provided the defense, or in the enforcement of the promises given by the Contractor in the Contract, Contract Documents, or approved change orders, or in the enforcement of the promises given by the Contractor and Surety in this Bond, the Contractor and Surety agree that they will make the Jurisdiction whole for all such outlay and expense, provided that the Surety's obligation under this bond shall not exceed 125% of the penal sum of this bond. In the event that any actions or proceedings are initiated regarding this Bond, the parties agree that the venue thereof shall be Johnson County, State of Iowa. If legal action is required by the Jurisdiction to enforce the provisions of this Bond or to collect the monetary obligation incurring to the benefit of the Jurisdiction, the Contractor and the Surety agree, jointly, and severally, to pay the Jurisdiction all outlay and expense incurred therefor by the Jurisdiction. All rights, powers, and remedies of the Jurisdiction hereunder shall be cumulative and not alternative and shall be in addition to all rights, powers, and remedies given to the Jurisdiction, by law. The Jurisdiction may proceed against surety for any amount guaranteed hereunder whether action is brought against the Contractor or whether Contractor is joined in any such action(s) or not. Now therefore, the condition of this obligation is such that if said Principal shall faithfully perform all the promises of the Principal, as set forth and provided in the Contract and in this Bond, then this obligation shall be null and void, otherwise it shall remain in full force and effect. When a work, term, or phrase is used in this Bond, it shall be interpreted or construed first as defined in this Bond and the Contract; second, if not defined in the Bond or Contract, it shall be interpreted or construed as defined in applicable provisions of the Iowa Code; third, if not defined in the Iowa Code, it shall be interpreted or construed according to its generally accepted meaning in the construction industry; and fourth, if it has no generally accepted meaning in the construction industry, it shall be interpreted or construed according to its common or customary usage. Failure to specify or particularize shall not exclude terms or provisions not mentioned and shall not limit liability hereunder. The Contract is hereby made a part of this Bond. Iowa River Powerhouse Dam Repair Project 0510 — Page 3 of 4 PRINCIPAL: Printed Name of Contractor Officer SM NOTE: 1. 2. 3. 4. By Signature of Contractor Officer Title of Contractor Officer SURETY: Surety Company Name Signature of Attorney -in -Fact Officer Printed Name of Attorney -in -Fact Officer Company Name of Attorney -in -Fact Company Address of Attorney -in -Fact City, State, Zip Code of Attorney -in -Fact Telephone Number of Attorney -in -Fact All signatures on this performance, payment, and maintenance bond must be original signatures in ink; copies, facsimile, or electronic signatures will not be accepted. This bond must be sealed with the Surety's raised, embossing seal. The Certificate or Power of Attorney accompanying this bond must be valid on its face and sealed with the Surety's raised, embossing seal. The name and signature of the Surety's Attorney-in-Fact/Officer entered on this bond must be exactly as listed on the Certificate or Power of Attorney accompanying this bond. Iowa River Powerhouse Dam Repair Project 0510 — Page 4 of 4 0520 CONTRACT COMPLIANCE SECTION I - GENERAL POLICY STATEMENT It is the policy of the City of Iowa City to require equal employment opportunity in all City contract work. This policy prohibits discrimination by the City's contractors, consultants and vendors and requires them to ensure that applicants seeking employment with them and their employees are treated equally without regard to age, color, creed, disability, gender identity, marital status, national origin, race, religion, sex, or sexual orientation. It is the City's intention to assist employers, who are City contractors, vendors or consultants, in designing and implementing equal employment opportunity so that all citizens will be afforded equal accessibility and opportunity to gain and maintain employment. Provisions: All contractors, vendors, and consultants requesting to do business with the City must submit an Equal Opportunity Policy Statement before the execution of the contract. 2. All City contractors, vendors, and consultants with contracts of $25,000 or more (or less if required by another governmental agency) must abide by the requirements of the City's Contract Compliance Program. Emergency contracts may be exempt from this provision at the discretion of the City. Regardless of the value of the contract, all contractors, vendors, and consultants are subject to the City's Human Rights Ordinance, which is codified at Article 2 of the City Code. 3. Contracting departments are responsible for assuring that City contractors, vendors, and consultants are made aware of the City's Contract Compliance Program reporting responsibilities and receive the appropriate reporting forms. A notification of requirements will be included in any request for proposal and notice of bids. 4. Prior to execution of the contract, the completed and signed Assurance of Compliance (located on 0520 — Pages 2 and 3) or other required material must be received and approved by the City. 5. Contracting departments are responsible for answering questions about contractor, consultant and vendor compliance during the course of the contract with the City. 6. All contractors, vendors, and consultants must refrain from the use of any signs or designations which are sexist in nature, such as those which state "Men Working" or "Flagman Ahead," and instead use gender neutral signs. 7. All contractors, vendors, and consultants must assure that their subcontractors abide by the City's Human Rights Ordinance. The City's protected classes are listed at Iowa City City Code Section 2-3-1. 4, Iowa River Powerhouse Dam Repair Project 0520 — Page 1 of 6 SECTION II -ASSURANCE OF COMPLIANCE The following sets forth the minimum requirements of a satisfactory Equal Employment Opportunity Program which will be reviewed for acceptability. PLEASE RETURN PAGES 2 THROUGH 3 OF THIS SECTION TO THE CONTRACTING DEPARTMENT PRIOR TO THE EXECUTION OF THE CONTRACT. With respect to the performance of this contract, the contractor, consultant or vendor agrees as follows: (For the purposes of these minimum requirements, "contractor' shall include consultants and vendors.) The contractor will not discriminate against any employee or applicant for employment and will take affirmative efforts to ensure applicants and employees are treated during employment without regard to their age, color, creed, disability, gender identity, marital status, national origin, race, religion, sex, or sexual orientation. Such efforts shall include, but not be limited to the following: employment, promotion, demotion, or transfer; recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship. 2. The contractor will, in all solicitations or advertisements for employees placed by or on behalf of the contractor, state that it is an equal opportunity employer. Note: Contracts that are federally funded are subject to Executive Order No. 11246, as amended, and the regulations (see generally 29 U.S.C. § 1608 et seq.) and relevant orders of the U.S. Secretary of Labor. The Secretary of Labor, and not the City, enforces said regulations and orders. 3. Provide a copy of your written Equal Employment Opportunity policy statement. Where is this statement posted? 4. What is the name, telephone number and address of your business' Equal Employment Opportunity Officer? (Please print) Phone Number Street Address City, State, Zip Code f M� Iowa River Powerhouse Dam Repair Project 0520 — Page 2 of 6 5. The undersigned agrees to display, in conspicuous places at the work site, all posters required by federal and state law for the duration of the contract. NOTE: The City can provide assistance in obtaining the necessary posters. 6. How does your business currently inform applicants, employees, and recruitment sources (including unions) that you are an Equal Employment Opportunity employer? The above responses are true and correctly reflect our Equal Employment Opportunity policies. Business Name Phone Number Signature Print Name Title Date Iowa River Powerhouse Dam Repair Project 0520 — Page 3 of 6 SECTION III - SUGGESTED STEPS TO ASSURE EQUAL EMPLOYMENT OPPORTUNITIES COMPANY POLICY Determine your company's policy regarding equal employment opportunities. Document the policy and post it in a conspicuous place so that it is known to all your employees. Furthermore, disseminate the policy to all potential sources of employees and to your subcontractors asking their cooperation. The policy statement should recognize and accept your responsibility to provide equal employment opportunity in all your employment practices. In regard to dissemination of this policy, this can be done, for example, through the use of letters to all recruitment sources and subcontractors, personal contacts, employee meetings, web page postings, employee handbooks, and advertising. 2. EQUAL EMPLOYMENT OPPORTUNITY OFFICER Designate an equal employment opportunity officer or, at minimum, assign someone the responsibility of administering and promoting your company's Equal Employment Opportunity program. This person should have a position in your organization which emphasizes the importance of the program. INSTRUCT STAFF Your staff should be aware of and be required to abide by your Equal Employment Opportunity program. All employees authorized to hire, supervise, promote, or discharge employees or are involved in such actions should be trained and required to comply with your policy and the current equal employment opportunity laws. 4. RECRUITMENT (a) Let potential employees know you are an equal opportunity employer. This can be done by identifying yourself on all recruitment advertising as "an equal opportunity employer". (b) Use recruitment sources that are likely to yield diverse applicant pools. Word-of-mouth recruitment will only perpetuate the current composition of your workforce. Send recruitment sources a letter annually which reaffirms your commitment to equal employment opportunity and requests their assistance in helping you reach diverse applicant pools. (c) Analyze and review your company's recruitment procedures to identify and eliminate discriminatory barriers. (d) Select and train persons involved in the employment process to use objective standards and to support equal employment opportunity goals. (e) Review periodically job descriptions to make sure they accurately reflect major job functions. Review education and experience requirements to make sure they accurately reflect the requirements for successful job performance. (f) Review the job application to ensure that only job related questions are asked. Ask yourself "Is this information necessary to judge an applicant's ability to perform the job applied for?" Only use job -related tests which do not adversely affect any particular group of people. (g) Monitor interviews carefully. Prepare interview questions in advance to assure that they are only job related. Train your interviewers on discrimination laws. Biased Iowa River Powerhouse Dam Repair Project 0520 — Page 4 of 6 and subjective judgments in personal interviews can be a major source of discrimination. (h) Improve hiring and selection procedures and use non -biased promotion, transfer and training policies to increase and/or improve the diversity of your workforce representation. Companies must make sure procedures for selecting candidates for promotion, transfer and training are based upon a fair assessment of an employee's ability and work record. Furthermore, all companies should post and otherwise publicize all job promotional opportunities and encourage all qualified employees to bid on them. For your information is a copy of Section 2-3-1 of the City Code which prohibits certain discriminatory practices in employment can be found at: https://codelibrary.amlegal.com/codes/iowacitvia/latest/iowacity ia/0-0-0-631#JD 2-3-1. Please note that the protected characteristics include some not mandated for protection by Federal or State law. As a contractor, consultant or vendor doing business with the City of Iowa City you are required to abide by the provisions of the local ordinance in conjunction with your performance under a contract with the City. Iowa River Powerhouse Dam Repair Project 0520 — Page 5 of 6 SAMPLE: EQUAL EMPLOYMENT OPPORTUNITY POLICY To all employees of This Company and its employees shall not discriminate against any employee or applicant for employment based on his or her age, color, creed, disability, gender identity, marital status, national origin, race, religion, sex, or sexual orientation. The anti -discrimination policy extends to decisions involving hiring, promotion, demotion, or transfer; recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship. Further, this Company and its employees will provide a working environment free from such discrimination. All employees are encouraged to refer minority and women applicants and applicants with disabilities for employment. The Equal Employment Opportunity Officer for the is: Name: Address: Telephone: NOTE: This is a SAMPLE ONLY. You may wish to confer with your Equal Employment Opportunity (EEO) officer or legal counsel to formulate a policy which specifically meets the needs of your company. C "3 Iowa River Powerhouse Dam Repair Project 0520 — Page 6 of 6 0530 WAGE THEFT POLICY It is the policy of the City of Iowa City, as expressed by City Council Resolution No. 15-364 adopted on November 10, 2015, not to enter into certain contracts with, or provide discretionary economic development assistance to, any person or entity (including an owner of more than 25% of the entity) who has admitted guilt or liability or been adjudicated guilty or liable in any judicial or administrative proceeding of committing a repeated or willful violation of the Iowa Wage Payment Collection law, the Iowa Minimum Wage Act, the Federal Fair Labor Standards Act or any comparable state statute or local ordinance, which governs the payment of wages, for a period of five (5) years from the date of the last conviction, entry of plea, administrative finding or admission of guilt. (hereinafter "Wage Theft Policy") Application. The Wage Theft Policy applies to the following: a. Contracts in excess of $25,000 for goods, services or public improvements. Contracts for discretionary economic development assistance. "Discretionary" economic development assistance shall mean any economic development assistance provided by the City of Iowa City that is not required by law. II. Exceptions. The Wage Theft Policy does not apply to emergency purchases of goods and services, emergency construction or public improvement work, sole source contracts excepted by the City's purchasing manual, cooperative/piggyback purchasing or contracts with other governmental entities. III. Affidavit. The contracting entity must complete the attached affidavit showing compliance with the Wage Theft Policy and provide it to the Contracting Department prior to the execution of the contract. Contract provision: Any contract to which this policy is applicable will include the following contract provision: If the City becomes aware that a person or entity (including an owner of more than 25% of the entity) has admitted guilt or liability or been adjudicated guilty or liable in any judicial or administrative proceeding of committing a repeated or willful violation of the Iowa Wage Payment Collection law, the Iowa Minimum Wage Act, the Federal Fair Labor Standards Act or any comparable state statute or local ordinance, which governs the payment of wages, within the five (5) year period prior to the award or at any time after the award, such violation shall constitute a default under the contract. IV. Waivers. If a person or entity is ineligible to contract with the City as a result of the Wage Theft Policy it may submit a request in writing indicating that one or more of the following actions have been taken: a. There has been a bona fide change in ownership or control of the ineligible person or entity; b. Disciplinary action has been taken against the individual(s) responsible for the acts giving rise to the violation(s); Iowa River Powerhouse Dam Repair Project 0530 — Page 1 of 3 C. Remedial action has been taken to prevent a recurrence of the acts giving rise to the disqualification or default; or d. Other factors that the person or entity believes are relevant. The City Manager or Designee shall review the documentation submitted, make any inquiries deemed necessary, request additional documentation if warranted and determine whether a reduction in the ineligibility period or waiver is warranted. Should the City Manager or Designee determine that a reduction or waiver of the ineligibility period is warranted the City Manager or Designee shall make such recommendation to the City Council. The City Council will make a final decision as to whether to grant a reduction or waiver. Iowa River Powerhouse Dam Repair Project 0530 — Page 2 of 3 WAGE THEFT AFFIDAVIT 1, , certify under penalty of perjury and pursuant to the laws of the State of Iowa that the following is true and correct: 1. 1 am the [position] of ["contracting entity'] and have the authority to execute this affidavit on behalf of said contracting entity and any person or entity with an ownership interest in said contracting entity of more than 25%. 2. Neither ["contracting entity"] nor any person or entity with an ownership interest of more than 25% of said contracting entity has been adjudicated guilty or liable in any judicial or administrative proceeding of committing a repeated or willful violation of the Iowa Wage Payment Collection law, the Iowa Minimum Wage Act, the Federal Fair Labor Standards Act or any comparable state statute or local ordinance, which governs the payment of wages in the last 5 years. Signature C� -f0 c- Iowa River Powerhouse Dam Repair Project 0530 — Page 3 of 3 SUDAS STANDARD SPECIFICATIONS The City of Iowa City has adopted the SUDAS Standard Specifications for use on all public improvement projects and construction within the public right-of-way. The SUDAS Standard Specifications are incorporated herein by reference. Copies of the current version of the SUDAS Standard Specifications Manual can be obtained from the SUDAS website at: htti)s:Hiowasudas.org/manuals/specifications-manual/. These specifications are kept on file in the City Engineer's Office and will be made available for viewing by City staff and the public. Previous editions of the SUDAS Standard Specifications can be found here: https://iowasudas.org/archived-specifications/. Iowa River Powerhouse Dam Repair Project Page 1 of 1 GENERAL SUPPLEMENTAL SPECIFICATIONS The City of Iowa City has adopted the General Supplemental Specifications for use on all public improvement projects and construction within the public right-of-way. The General Supplemental Specifications are incorporated by reference. Copies of the General Supplemental Specifications can be obtained from the website at: https://iowasudas.org/supplemental-specifications/. These specifications are kept on file in the City Engineer's Office and will be made available for viewing by City staff and the public. Iowa River Powerhouse Dam Repair Project Page 1 of 1 SUPPLEMENTAL SPECIFICATIONS The City of Iowa City has adopted the Supplemental Specifications to the current Edition of the SUDAS Standard Specifications Manual for use on all public improvement projects and construction within the public right-of-way. The Supplemental Specifications are incorporated herein by reference. Copies of the current version can be obtained at: https://www.iowa- city.org/webIink/0/edoc/1845668/CIC%20SupPIemental%20Specs.pdf or are available in the City Engineering Division Office. CD ca Iowa River Powerhouse Dam Repair Project Page 1 of 1 SPECIAL PROVISIONS The City of Iowa City allows bidders to submit a computer -generate attachment, hereinafter referred to as unit price attachment, in lieu of completing that portion of the Proposal identifying the bid items, description, unit, quantity, and unit prices. See Section 1020, 1.09.13, for details on preparing a computer -generated unit price attachment. This project includes several additional modifications to the SUDAS Standard Specifications beyond the Supplemental Specifications referenced earlier in this Project Manual. Supplemental Specifications to the Special Provisions include: IOWA DOT: Bid items referencing Iowa Department of Transportation shall meet the requirements and covenants of the Iowa Department of Transportation "Standard Specifications for Highway and Bridge Construction," Series 2023. 013300 — Submittal Procedures 013524 — Construction Safety 014000 — Quality Requirements 015100 — Temporary Utilities 017700 — Closeout Procedures 021000 — Site Preparation 022200 — Demolition 031000 — Concrete Forms and Accessories 032000 — Concrete Reinforcement 033000 — Cast -in -Place Concrete 312319 — Control of Water CD Ca �,D Iowa River Powerhouse Dam Repair Project Page 1 of 1 SECTION 01 33 00 SUBMITTAL PROCEDURES PART 1: GENERAL 1.01 GENERAL SUBMITTAL PROCEDURES A. Contractor shall: 1. Transmit a minimum of one copy of each submittal labeled with the Project name, name of the submittal, and Section and page number of these Contract Documents in which the submittal was requested. Indicate the type or purpose of the submittal as more fully described elsewhere in this Section with regard to the Schedule of Submittals. Transmit the correct number of copies as described below for each type of submittal. A transmittal letter stating the same information shall accompany each submittal. Electronic submittals are preferred, but hard copy submittals are acceptable. 2. Transmit all electronic submittals to the attention of Engineer via a web -based PM software with Adobe PDF attachments as follows: E-mail addressed to: Joe Welna, jwelna@barr.com Tor Hansen, thansen@barr.com 3. Apply Contractor's stamp, signed or initialed certifying that review and verification of products required, field dimensions, adjacent construction Work, and coordination of information, is in accordance with the requirements of the Work and Contract Documents. Unstamped or unsigned submittals and submittals that have not been thoroughly checked by Contractor will be returned without action. 4. Schedule submittals to expedite Project and in accordance with the Schedule of Submittals to be prepared by Contractor. Coordinate submission of related items. 5. Identify all variations or deviations from the Contract Documents and identify alternative products or system limitations that may be detrimental to successful performance of the completed Work. 6. Provide space for Engineer's review, stamp, and comments. 7. Revise and resubmit submittals as required in a timely manner. Identify all changes made since previous submittal. 8. Promptly distribute copies of reviewed submittals to Subcontractors, Suppliers, and other concerned parties. Instruct parties to promptly report any inability to comply with provisions. 9. Contractor shall not proceed with any Work requiring review by Owner or Engineer until satisfactory submittals have been reviewed and returned to Contractor. 10. Allow a minimum of 7 calendar days for Owner or Engineer review of submittals. B. Submittals that are made that are not specifically required by the Contract Documents may be returned without action. C. All submittals shall come from Contractor; submittals directly from Subcontractors or vendors will be returned without action. .. CD City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-1 1.02 PROGRESS SCHEDULE A. Submit an estimated progress schedule and revise the schedule from time to time, as may reasonably requested by Engineer or Owner, to reflect the current status and progress of the Work and the operations necessary to complete the Work as required. B. The progress schedule shall clearly illustrate the sequence of the Work (by locations and other factors as may be appropriate) to be followed by Contractor to efficiently progress with the Work. 1.03 SCHEDULE OF VALUES A. Submit a schedule of values with a detailed cost breakdown for all lump sum items of Work included in the Contract. Subdivide the Work into component parts in sufficient detail to serve as the basis for progress payments during construction. Unit price items shall be subject to progress payments based on the units of Work completed as provided for in the General Conditions and do not need to be included in the schedule of values. B. The schedule of values, for lump sum items, shall be organized in a tabular format. At a minimum, the schedule of values shall consist of the following columns: 1. ITEM NUMBER: Number items according to the item numbers provided on the Bid Form. 2. ITEM DESCRIPTION: Written description of each item. 3. UNIT(S): The detailed breakdown of the lump sum item into units of measure that apply to the various elements of Work which, in total, comprise the lump sum item. Several units may apply to each lump sum item. 4. QUANTITY: The quantity of each unit identified in 3. above. 5. UNIT COST: The cost of materials, equipment, labor, overhead and profit for each unit identified in 3. above. 6. SUBTOTAL COST: The unit cost multiplied by the quantity of each unit. 7. LUMP SUM COST: The aggregate sum of all unit costs for each lump sum item. This aggregate sum shall equal the bid price for the lump sum item. C. The schedule of values shall contain sufficient detail to serve as the basis for progress payments for materials or equipment which will be shop fabricated and for lump sum items. The schedule should include such items as design, fabrication, transportation to site, installation and any other pertinent items Contractor wishes to break out for purposes of progress payments. D. The schedule of values shall be subject to review and approval by Owner. If in opinion of Owner or Engineer the schedule of values does not contain sufficient detail or appears to be unbalanced, Owner may require Contractor to revise and resubmit the schedule of values and/or provide documentation to justify Contractor's distribution. Contractor shall correct such deficiencies and resubmit the schedule of values. 1.04 SCHEDULE OF SUBMITTALS A. Submit a schedule of submittals prior to beginning any Work. B. The schedule of submittals shall be in tabular form listing all submittals which are required by the Contract Documents and the date on which Contractor will make each submittal. At a minimum, the schedule of submittals shall consist of the following columns; ; I) 1. SUBMITTAL NUMBER: Number consecutively. City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-2 2. SECTION NO.: Section number or description of location in Contract Documents where submittal is requested. 3. PAGE NO.: Page number of section in Contract Documents where submittal is requested. 4. ITEM: Description of item or items to which submittal pertains. 5. SUBMITTAL TYPE: A letter code indicating what type of submittal was requested. The type key shall be as follows: a. Information or Documentation b. Review C. Approval d. Shop Drawings e. Alternate Product Supporting Data f. Administrative such as schedules, etc. 6. DEFICIENCIES: Manner in which submittal or proposed alternate product does not meet the requirements of the Contract Documents. 7. ANTICIPATED SUBMITTAL DATE: Date on which Contractor anticipates submittal to be delivered to Engineer. 8. RESPONSE REQUIRED: Indicate yes if Contractor anticipates response from Engineer and no if no response is anticipated. C. The schedule of submittals will be reviewed by Engineer and Engineer will respond listing any deficiencies. Contractor shall not list submittals not called for in the Contract Documents. The schedule shall include all items for which Contractor proposes to use substitute or "or equal" products. Contractor shall correct deficiencies and resubmit schedule of submittals prior to beginning any Work. 1.05 REVIEW OF SUBMITTALS A. Engineer's review of submittals will cover only general conformity to the Specifications and Contract Documents, external connections, and interfaces with equipment and materials furnished under separate specifications. Engineer's review does not indicate a thorough review of all dimensions, quantities, and details of the equipment, material, device, or item indicated or the accuracy of the information or documentation submitted; nor shall review or approval by Engineer be construed as relieving Contractor from any and all responsibility for errors or deviations from the requirements of the Contract Documents. B. All submittals, after final processing by Engineer shall become a part of the Contract Documents and the Work indicated or described thereby shall be performed in conformity therewith unless otherwise required by Owner. 1.06 SUBMITTAL FOR INFORMATION OR DOCUMENTATION A. Submit one copy to Engineer and one copy to Owner. B. Submittal shall be made at least 7 days before the subject of the submittal is to be incorporated into the Work. C. Submittal is for the purpose of formal verification that the subject of the submittal°conforfwts to the requirements of the Specifications, for formal documentation of the Work, or both. D. No action is required by Owner or Engineer. Engineer will generally notify Contractor if deficiencies are identified; however, Contractor is solely responsible for ensuring that the subject of the submittal conforms to the requirements of the Specifications. City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-3 1.07 SUBMITTAL FOR REVIEW A. Submit one copy to Engineer and one copy to Owner. B. Submittal shall be made at least 10 days before the subject of the submittal is to be incorporated into the Work. Engineer will respond within 7 days from receipt of submittal. C. Submittal is for the purpose of providing opportunity to Engineer for review and comment on the subject of the submittal. D. Engineer will respond to the submittal either with a list of comments or indicating no comments. E. If Engineer's comments indicate a deficiency with respect to the requirement of the Specifications, Contractor shall amend the submittal and resubmit. Engineer will again respond to the resubmittal. F. If Engineer's comments are in regards to an issue which based upon the Contract Documents is at Contractor's discretion, Contractor shall furnish additional information, provide justification, and otherwise cooperate in addressing and resolving Engineer's comments. G. Contractor shall remain solely responsible for ensuring that the subject of the submittal conforms to the requirements of the Specifications. 1.08 SUBMITTAL FOR APPROVAL A. Submit one copy to Engineer and one copy to Owner. B. Submittal shall be made at least 15 days before the subject of the submittal is to be incorporated into the Work. Engineer will respond within 7 days from receipt of submittal. C. Submittal shall be stamped with Contractor's approval. Contractor's stamp shall be a representation that Contractor has assumed full responsibility for determining the submittal requirements and verifying that the subject of the submittal conforms to the requirements of the Specifications. Submittals not bearing Contractor's stamp will be returned without review or action. D. Engineer will review, make notations as appropriate, stamp, and return submittals to Contractor. E. No Work shall be performed in connection with the fabrication or manufacture of equipment and materials until the data has been reviewed by Engineer, except at Contractor's own risk and responsibility. Work may proceed when submittals have been returned marked RECOMMENDED REVISIONS NOTED, provided the Work is performed in accordance with Engineer's notations, or NO EXCEPTIONS TAKEN. F. If changes are made at the project site to correct manufacturing errors, revised drawings incorporating the changes shall be prepared and submitted to Engineer. G. Drawings shall be in sufficient detail to indicate the kind, size, and arrangement of component materials and devices; the external connections, anchorages, and supports required; the dimensions needed for installation and correlation with the foundations; and other information specifically requested herein. H. Each drawing submitted shall be black line on white background or blue line on white background. Print size shall not exceed 24 inches by 36 inches. I. Each drawing submitted shall be clearly marked with the name of the project, the specification title, the specification number, Engineer's assigned number when so advised, and Contractor's name. If catalog pages are submitted, the applicable items shall be indicated. 1.09 SUBMITTAL OF SHOP DRAWINGS a'13 A. When required in individual sections of these specifications, submit Shop Drawings in :,..; accordance with the schedule of submittals. (.0 r City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-4 B. Contractor shall comply with all requirements of the General Conditions and the Submittal Procedures described elsewhere in this Section. C. The data shown on the Shop Drawings shall be complete with respect to quantities, dimensions, specified performance and design criteria, materials, and similar data to show Owner and Engineer that the materials and equipment Contractor proposes to provide meet the requirements of the Contract Documents and to enable Owner and Engineer to review the information for the limited purposes indicated below. D. Before submitting each Shop Drawing, Contractor shall have determined, verified, and certified the following: 1. All field measurements, quantities, dimensions, specified performance criteria, installation requirements, materials, catalog numbers, and similar information; 2. All issues regarding fitness for intended use, fabrication, shipping, handling, storage, assembly, and installation pertaining to the Work; and 3. All information relative to Contractor's sole responsibilities in respect of means, methods, techniques, sequences, and procedures of construction and safety precautions and programs incident thereto. Contractor shall also have reviewed and coordinated each Shop Drawing with other Shop Drawings and with the requirements of the Work and the Contract Documents. Any disclaimers on Contractor's stamp or otherwise stated by Contractor on Shop Drawings shall not limit Contractor's responsibilities set forth above. E. Owner's or Engineer's review and approval will be only to determine if the items covered by the submittals will, after installation or incorporation in the Work, conform to the information given in the Contract Documents and be compatible with the design concept of the completed Project as a functioning whole as indicated by the Contract Documents. Owner's or Engineer's review will not extend to those areas that Contractor is responsible for above. Owner's or Engineer's review and approval will not extend to means, methods, techniques, sequences, or procedures of construction or to safety precautions or programs incident thereto. The review and approval of a separate item as such will not indicate approval of the assembly in which the item functions. Owner's and Engineer's review and approval of Shop Drawings shall not relieve Contractor from responsibility for any variation from the requirements of the Contract Documents. F. Owner or Engineer will review and return one marked copy to Contractor within 7 calendar days following receipt. Contractor shall not proceed with related Work until approved submittal is returned. G. If Owner's or Engineer's comments require resubmittal, Contractor shall make the revisions indicated and resubmit as for an original submittal. Owner or Engineer will review as for an original submittal. H. If Owner's or Engineer's comments do not require resubmittal, Contractor shall make the revisions indicated and transmit to Owner or Engineer. This revision shall bear Contractor's certification in accordance with the requirements of the General Conditions. I. Following submittal of final corrected submittal, Contractor shall provide to Subcontractors and/or Suppliers. J. If actual installation does not conform to the approved Shop Drawings, notify Owner.dr Engineer. Note revisions on record documents. 1.10 ALTERNATE PRODUCTS A. If Contractor proposes to use alternate or substitute products, Contractor shall submit literature, drawings, and any other data necessary to substantiate that proposed substitute is equivalent or equal to the item named, and otherwise meets the General Conditions. c, B. Do not proceed with product installation or use until approval by Engineer is received7-7, City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-5 1.11 RECORD DOCUMENTS A. Submit one original copy of all record documents (or clearly legible copies) to Owner and one duplicate to Engineer prior to substantial Completion. B. Record documents consist of all Drawings, Specifications, Addenda, Change Orders, and Shop Drawings legibly annotated to reflect all changes made during construction. 1.12 PRODUCT WARRANTY SUBMITTAL REQUIREMENTS A. Submit prior to substantial completion. B. All warranty or guarantee certificates shall be signed by Contractor and all other parties as requested in specific sections. C. All product warranty submittals shall conform to the applicable requirements of this section and the other administrative and procedural requirements specified in the individual specification sections. 1.13 BASIS FOR COMPENSATION A. All costs to comply with the requirements of this Section of the Specifications shall be considered to be included in the Contract Price and no additional compensation will be provided. PART 2: PRODUCTS [NOT USED] PART 3: EXECUTION [NOT USED] END OF SECTION 01 33 00 City of Iowa City Submittal Procedures Iowa River Powerhouse Dam Repair Project 01 33 00-6 SECTION 01 35 24 CONSTRUCTION SAFETY PART 1: GENERAL 1.01 GENERAL A. Contractor shall be solely and completely responsible for jobsite conditions and safety procedures and programs, including safety and health of all persons and property, on those portions of the site affected by or used by Contractor, Contractor's employees, subcontractors, agents, and others during performance of the Work. This requirement will apply continuously and not be limited to normal working hours. B. Observation of the Work and Contractor's performance by Owner and Engineer is not intended to include review of the adequacy of Contractor's safety and health procedures and programs on or near the construction site. Contractor is solely responsible for the protection of property and the safety and health of its employees, subcontractors, suppliers, agents, and others on or near the site. 1.02 SITE SAFETY A. The following shall apply: 1. Contractor shall be responsible for furnishing Contractor's employees, as well as any subcontractor's and supplier's employees, with all safety equipment and other protection devices needed to comply with Laws and Regulations and accepted safety practices. Contractor shall also be responsible for furnishing all visitors to the site with all safety equipment including but not limited to hard hats, safety vests, and eye protection. 2. Hold weekly safety meetings with all employees that will be working on the jobsite. These meetings can be at the start of a shift and should cover various relevant safety issues that pertain to the Work being done. Contractor shall maintain a list of employee attendance and provide this list to Owner if requested. 3. Make all persons on the site familiar with the safety precautions appropriate to the construction zones and refuse entry by any person not authorized by Owner. 4. Contractor shall be responsible for any safety violation and/or fine that may occur because of any neglect by Contractor, Contractor's employees, Contractor's subcontractors, or any third party under Contractor's supervision or direction. 5. Provide safe access to all portions of the Work for use by Owner, Engineer and regulatory entities having jurisdiction in the performance of their observation duties. Said access shall conform to applicable Laws and Regulations and to all requirements of any regulatory agency or entities who claim jurisdiction over the safety of the Project area. If Owner is unable to observe Contractor's Work, due to conditions, which in the opinion of Owner are, unsafe, Owner's payment for such Work may be withheld until Work has been determined to be in compliance with the Contract Documents. 1.03 CONTROLLED SUBSTANCE A. Alcoholic beverages, drugs, or personnel under the influence of such substances are: not allowed on the Site. Any Contractor's employee in violation of this policy will be permanently barred from the property. City of Iowa City Construction Safety Iowa River Powerhouse Dam Repair Project 01 35 24-1 1.04 REPORT OF ACCIDENT OR INJURY A. Immediately report to Owner any accident or injury to personnel or property damage that may occur. Any damage to existing structures by Contractor shall be repaired promptly by Contractor at no cost to Owner. 1.05 BASIS FOR COMPENSATION A. All costs to comply with the requirements of this section of the specifications shall be considered to be included in the Contract Price and no additional compensation will be provided. PART 2: PRODUCTS (NOT USED) PART 3: EXECUTION (NOT USED) END OF SECTION 01 35 24 ca N ' ~ C:� City of Iowa City Construction Safety Iowa River Powerhouse Dam Repair Project 01 35 24-2 SECTION 01 40 00 QUALITY REQUIREMENTS PART 1: GENERAL 1.01 DESCRIPTION A. Perform work included in this section in accordance with the following paragraphs, the General Requirements set forth in Division 1 of these Specifications, and the provisions of the other Contract Documents. 1.02 SUMMARY A. This section includes administrative and procedural requirements for quality -control services. B. Quality -control services include inspections, tests, and related actions, including reports performed by Contractor, by Owner, by Engineer, by independent agencies, and by governing authorities. Contractor's Quality control services include, but are not limited to, construction staking, survey verification, material testing, strength testing, and other activities outlined in the Specifications and Drawings. C. Requirements of this section relate to customized fabrication and installation procedures, not production of standard products. 1. Specific quality -control requirements for individual construction activities are specified in the sections that specify those activities. Requirements in those sections may also cover production of standard products. 2. Specified inspections, tests, and related actions do not limit Contractor's quality -control procedures that facilitate compliance with Contract Document requirements. 3. Requirements for Contractor to provide quality -control services required by Engineer, Owner, or authorities having jurisdiction are not limited by provisions of this section. 1.03 RELATED SECTIONS A. Section 02 22 00 Demolition B. Section 03 10 00 Concrete Forms and Accessories C. Section 03 20 00 Concrete Reinforcement D. Section 03 30 00 Cast -in -Place Concrete E. Section 31 23 19 Control of Water 1.04 RESPONSIBILITIES A. Contractor Responsibilities 1. Contractor shall be responsible for all testing not explicitly assigned to Owner. 2. All inspections, tests, retests, and other quality -control services specified elsewhere in the Contract Documents and required by authorities having jurisdiction shall be at the expense of Contractor. 3. Unless otherwise indicated as the responsibility of another identified entity, Contractor shall schedule all inspections, tests, and other quality -control services specified elsewhere in the Contract Documents and required by authorities having jurisdiction. 4. Where individual sections specifically indicate that certain inspections, tests, and'.other quality -control services are Owner's responsibility, Contractor shall aide in coordinating to City of Iowa City Quality Requirements Iowa River Powerhouse Dam Repair Project 01 40 00-1 schedule these services if necessary. Owner shall employ and pay a qualified independent testing agency to perform these quality -control services. Costs for these services are not included in the Contract Sum. 5. Contractor shall coordinate with Engineer and Owner's Representative to obtain clarification of Contract Documents, Specifications, and testing criteria when necessary. 6. Contractor shall coordinate with Engineer and Owner's Representative to furnish Engineer and Owner's Representative with access to witness and observe all sampling, testing activities and samples. 7. Contractor shall furnish all submittals as specified. All submittals by Contractor shall be at Contractor's expense. B. Retesting: Contractor is responsible for retesting where results of inspections, tests, or other quality -control services prove unsatisfactory and indicate noncompliance with Contract Document requirements, regardless of whether the original test was Contractor's responsibility. 1. The cost of retesting Work, revised or replaced by Contractor, is Contractor's responsibility where required tests performed on original Work indicated noncompliance with Contract Document requirements. 2. All activities to correct Work and retesting shall be at the expense of Contractor until all Work meets specified criteria and acceptable test results are obtained on the Work. C. Contractor shall cooperate with Engineer, Owner, Owner's Representative, and agencies performing required inspections, tests, and similar services, and provide reasonable auxiliary services as requested. Contractor shall notify the entity sufficiently in advance of operations to permit personnel to perform testing or to witness and observe testing. Auxiliary services required include, but are not limited to, the following: 1. Provide access to the Work. 2. Furnish incidental labor and facilities necessary to facilitate safe inspections and tests. 3. Take adequate quantities of representative samples of materials that require testing or assist the agency in taking samples. 4. Deliver samples to testing laboratories. 5. Provide information requested by the entity performing, witnessing, or observing testing. 6. Provide security and protection of samples and test equipment at the Project site. D. Owner Responsibilities At Owner's or Engineer's discretion, inspection and testing services will be performed by Owner, Engineer, Owner's Representative or Testing Agency to verify compliance with Contract Document requirements. These services are at the expense of Owner. These services do not relieve Contractor of responsibility for compliance with Contract Document requirements. Engineer and Owner reserve the right to witness and observe all testing. 1.05 EQUIPMENT A. Duties of the Testing Agency. The independent agency engaged to perform inspections, sampling, and testing of materials and construction specified in individual sections shall,; cooperate with Owner, Engineer, and Contractor in performance of the agency's duties. The testing agency shall provide qualified personnel to perform required inspections and tests. 1. The agency shall notify Owner and Engineer, and Contractor promptly of irregularities or deficiencies observed in the Work during performance of its services. City of Iowa City Quality Requirements Iowa River Powerhouse Dam Repair Project 01 40 00-2 2. The agency is not authorized to release, revoke, alter, or enlarge requirements of the Contract Documents or approve or accept any portion of the Work. 3. The agency shall not perform any duties of Contractor. B. Coordination. Coordinate the sequence of activities to accommodate required services with a minimum of delay. Coordinate activities to avoid the necessity of removing and replacing construction to accommodate inspections and tests. 1. Contractor is responsible for scheduling times for inspections, assisting with tests and samples, and similar activities. 1.06 SUBMITTALS A. Furnish draft copies of field testing results to Engineer daily, or on a frequent and regular basis as directed. All field testing results submitted to Engineer shall be submitted in electronic PDF format. Inform Engineer daily of test results for direction on corrective action required. B. Contractor shall submit name and qualifications of independent testing firm(s). C. Contractor (or Contractor's independent testing agency) shall submit a certified written report of each inspection, test, or similar service to Engineer. 1. Submit all reports to Engineer in PDF electronic format. Submittals shall be sent as set forth in Section 01 33 00 Submittal Procedures. 2. Report Data: Written reports of each inspection, test, or similar service include, but are not limited to, the following: a. Date of issue. b. Project title and number. C. Name, address, and telephone number of testing agency. d. Dates and locations of samples and tests or inspections. e. Names of individuals making the inspection or test. f. Designation of the Work and test method. g. Identification of product and specification section. h. Complete inspection or test data. i. Test results and an interpretation of test results. j. Ambient conditions at the time of sample taking and testing. k. Comments or professional opinion on whether inspected or tested Work complies with Contract Document requirements. I. Name and signature of inspector. M. Recommendations on retesting. 3. Record Test Report: upon Substantial Completion, Contractor shall submit a certified Record Test Report of all tests performed for record documentation. a. The Record Test Report shall contain all test reports generated during the Work. All test reports shall be organized by project location and subsequently by date. b. The Record Test Report shall include an index of all documentation enclosed in the report. C. The Record Test Report shall be submitted to Engineer in PDF electronic format. City of Iowa City Quality Requirements Iowa River Powerhouse Dam Repair Project 01 40 00-3 1.07 QUALITY ASSURANCE A. Qualifications for Service Agencies. Engage inspection and testing service agencies, including independent testing laboratories, that are prequalified as complying with the American Council of Independent Laboratories' "Recommended Requirements for Independent Laboratory Qualification" and that specialize in the types of inspections and tests to be performed. 1. Each independent inspection and testing agency engaged on the Project shall be authorized by authorities having jurisdiction to operate in the state where the Project is located. 2. Test personnel shall be qualified and hold certifications to perform quality control testing work. PART 2: PRODUCTS (NOT USED) PART 3: EXECUTION 3.01 REPAIR AND PROTECTION A. General. Upon completion of inspection, testing, sample taking and similar services, repair any damaged construction as necessary. B. Protect construction exposed by or for quality -control service activities and protect repaired construction. C. Repair and protection is Contractor's responsibility, regardless of the assignment of responsibility for inspection, testing, or similar services. END OF SECTION 01 40 00 t 4r City of Iowa City Quality Requirements Iowa River Powerhouse Dam Repair Project 01 40 00-4 SECTION 01 51 00 TEMPORARY UTILITIES PART 1: GENERAL 1.01 GENERAL A. Perform all work in accordance with the following paragraphs, the General Requirements set forth in Division 1 of these Specifications, and the provisions of the Contract Documents. B. Work covered under this Section includes providing all materials, equipment, and labor to furnish, install, and remove temporary utilities. 1.02 TEMPORARY UTILITIES A. Potable Water Potable water is not available at the Site. Make all arrangements necessary to provide potable water for consumption and construction purposes. B. Sanitary Facilities Provide sanitary facilities in locations approved by City for use by Contractor's employees, Subcontractors, suppliers, Engineer, Owner and all other persons working on the site. Provide sanitary facilities with lockable doors, that are routinely emptied and sanitized, and that are maintained in a clean and useable condition until substantial completion of the.work. a. Provide sanitary facilities with lockable doors when in use. b. Maintain in a clean and useable condition. C. Maintain until completion of the Work, unless Engineer or Owner approves earlier removal. C. Electricity No power is available on site. Arrange for, furnish, and pay for all electric power as necessary for completion of the work. D. Telephone & Internet 1. Arrange for, furnish, and pay for telephone and internet service for Contractor's use throughout project, if telephone and internet service are deemed necessary by Contractor. 1.03 SUBMITTALS rY A. No submittals are necessary for this section. 1.04 BASIS FOR COMPENSATION' '. A. All costs to comply with the requirements of this section of the specificationsal oil by cons%d0 to be included in the Contract Price and no additional compensation will be prayded- City of Iowa City Temporary Utilities Iowa River Powerhouse Dam Repair Project 01 51 00-1 PART 2: PRODUCTS (NOT USED) PART 3: EXECUTION (NOT USED) END OF SECTION 01 51 00 City of Iowa City Iowa River Powerhouse Dam Repair Project 01 51 00-2 CD Temporary Utilities SECTION 01 77 00 CLOSEOUT PROCEDURES PART 1: GENERAL 1.01 RECORD DOCUMENTS A. Maintain at the Site (or in Contractor's possession) one set of record documents including all Drawings, Specifications, and Change Orders in good condition and clearly annotated to show changes made during construction. Store record documents separate from documents used for construction, clearly mark, and make accessible to Engineer and Owner at all times. B. Record information on record documents concurrent with construction progress. Engineer or Owner may require Contractor to improve its performance with regard to recording information during the construction process. C. Record for each product Section of the Specifications a description of the actual products installed including the following: 1. Manufacturer's name and product model number. 2. Product substitutions or alternates used. 3. Changes made by Change Order. 4. Quality control procedures and test results. D. Record Drawings shall have recorded, at a minimum, the following items clearly indicated to record actual construction: 1. Approved version of all Shop Drawings. 2. Changes made by Change Order and all minor field changes of dimension and detail. 3. Details not shown on original Drawings. 4. Existing features and utilities demolished or removed not shown on original Drawings. E. Contractor shall submit record surveys and documents and all operations and maintenance manuals and other submittals required by other Sections of these Specifications. Record Survey: Contractor shall submit record survey of final as -built conditions of the site. The record survey shall include all site features and material extents in the Drawings and Specifications. Survey shall be ongoing throughout construction to capture items before they are buried or under water. Submit survey data to Engineer in a point file in .CSV format. The point file shall include northing, easting, elevation, and point description of each point. Collect record survey data in the datum and coordinate system stated on the Drawings. Collect record survey data using survey grade GPS. 1.02 CLEANUP A. Keep the premises free from accumulations of waste materials, rubbish and other debris resulting from the Work. At the completion of the Work, remove all waste materials,, rubbish, and debris from the premises as well as all tools, construction equipment and machinerytemporary facilities, and surplus materials. Leave the Site clean and ready for use by Owner. B. Clean all new surfaces, systems, and fixtures, including removal of labels,tags, grease, oil, dirt, dust, stains, etc. City of Iowa City Closeout Procedures Iowa River Powerhouse Dam Repair Project 01 77 00-1 1.03 GUARANTIES AND WARRANTIES A. Guarantee all work and material against all defects or as otherwise required for specific items in these Specifications. Repair or replace defective Work and materials to conform to the provisions of the Contract and without expense to Owner, within ten (10) days after notification in writing by Owner or Engineer of such defective Work or material. If Contractor does not make said repairs or replacements or have made arrangements for the correction thereof within the period specified above, Owner may do so and will charge the cost to Contractor. Perform repair work to cause Owner a minimum of inconvenience and interruption. B. The warranty period for all project components, regardless of when constructed, shall commence on the date of project acceptance by City Council. 1.04 FINAL SUBMITTALS A. Complete all submittals required by these Contract Documents prior to the payment of Contractor's Final Application for Payment. Final payment will not be due and payable until 10 days after all submittals have been made acceptable to Engineer or as provided in the General Conditions, whichever is later. B. Post -Construction Survey C. Record documents consist of all Drawings, Specifications, Surveys, Addenda, Field Orders, Work Change Directives, Change Orders, Material Testing Results and Shop Drawings clearly annotated to reflect all changes made during construction. 1.05 BASIS FOR COMPENSATION A. All costs to comply with the requirements of this Section of the Specifications are included in the Contract Price and no additional compensation will be provided. PART 2: PRODUCTS (NOT USED) PART 3: EXECUTION (NOT USED) END OF SECTION 01 77 00 r..y. City of Iowa City Closeout Procedures Iowa River Powerhouse Dam Repair Project 01 77 00-2 SECTION 02 10 00 SITE PREPARATION PART 1: GENERAL 1.01 DESCRIPTION A. The work covered by this Section consists of furnishing all equipment and materials and performing all labor necessary for site preparation to perform the Work as shown on Drawings and specified herein, including, but not limited to: 1. Prepare site for compliance with all permits and plans. 2. Utility clearance and relocation. 3. Securing Project Site. B. Contractor shall schedule its operations to minimize the potential for erosion by minimizing the total disturbed area onsite at any given time and completing operations and restoring the site in the shortest time possible. More information is located in the Construction SWPPP. 1.02 SEQUENCING AND SCHEDULING A. Install erosion and sediment control measures specified in the Construction SWPPP, and as directed by Owner prior to commencing activities related to clearing and grubbing or excavation. B. Contractor shall obtain Notice to Proceed from Owner before beginning any clearing and grubbing operations. C. Maintain and replace, for the duration of the construction as necessary, the erosion and sediment controls, traffic control, and dust control measures installed as herein provided or as directed by Owner. 1.03 BASIS FOR COMPENSATION A. Compensation for all Work covered under this Section of these Specifications shall be as set forth in Section 01 22 00 Measurement and Payment. PART 2: PRODUCTS [NOT USED] PART 3: EXECUTION 3.01 GENERAL A. Contractor shall take measures to prepare the Site access and Site conditions necessary to perform the Work, all in accordance with the Drawings and these Specifications. B. Contractor shall take measures as necessary to secure the Site from public access to protect Contractor's materials and equipment, and Work areas. This includes the use of existing gates or other security measures that limit public access to the Site, as well as additional measures that may be necessary during construction activities. C. Access to the Site shall be limited to the Site access locations shown on the Drawing's :and or as indicated in these Specifications. D. Contractor shall park within staging areas designated in the Drawings. �'...,:. C City of Iowa City Site Preparation Iowa River Powerhouse Dam Repair Project 02 10 00-1 3.02 SITE ACCESS A. Upon Completion of the Work, re -grade, re -surface, or otherwise improve or modify access routes to pre -construction conditions or better. END OF SECTION 02 10 00 City of Iowa City Site Preparation Iowa River Powerhouse Dam Repair Project 02 10 00-2 SECTION 02 22 00 DEMOLITION PART 1: GENERAL 1.01 DESCRIPTION A. Work included in this section shall be performed in accordance with the following paragraphs, the General Requirements set forth in Division 1 of these Specifications, and the provisions of the other Contract Documents. B. Work covered by this Section shall include furnishing all labor, equipment, materials, and performing all demolition operations required as shown on the Drawings and specified herein. 1.02 RELATED SECTIONS A. 02 10 00 Site Preparation B. 31 23 19 Control of Water 1.03 DEFINITIONS A. "Remove" is to completely eliminate a specified pipe, fitting, housing, or structure without regard for the conditions of the item after being removed. B. "Abandon" is to leave items in place without disturbing the surrounding area. C. "Salvage" is to remove an item in a condition that they may be reused for a similar purpose. D. "Protect" is to perform measures by means of flagging, marking or other means so as to avoid damage to existing or installed items. 1.04 SEQUENCING AND SCHEDULING A. Contractor shall notify Owner before proceeding with demolition work to provide Owner the opportunity to inspect the Work area prior to, during, and upon Completion of Work. B. Contractor shall install erosion control measures prior to beginning any demolition work. C. Contractor shall stage demolition work so as not to damage other portions of the Work not scheduled for removal. D. Contractor shall notify Owner of any un-documented features that are discovered in the Work area prior to removal or demolition. E. Contractor shall stage demolition Work so as not to damage any newly constructed items. F. Damage to existing structures or newly constructed items shall be repaired at Contractor's expense to the satisfaction of Owner. G. Contractor shall coordinate installation of cofferdam with demolition activities. H. Contractor shall follow all requirements during demolition related to control of water as stated in Section 31 23 19 of these Specifications. 1.05 QUALITY ASSURANCE A. Contractor shall assume full responsibility for any and all damages resulting from his Work. B. Repair or remove items that are damaged. Repair or replacement of damaged itemswill be performed to condition at least equal to that which existed prior to start of Work at no additional cost to Owner. TR City of Iowa City Demolition Iowa River Powerhouse Dam Repair Project 02 22 00-1 C. Provide protection of persons and property throughout progress of Work. Proceed in such a manner as to minimize spread of dust and flying particles and to provide safe working conditions for personnel. D. Obtain permission from Owner before abandoning or removing any existing structures, conduit, materials, equipment and appurtenances that are not specified for demolition in the Drawings. 1.06 SUBMITTALS A. Contractor shall submit a detailed plan for completing demolition work. B. Contractor shall submit a detailed plan for water control during demolition work. C. Contractor shall submit names and addresses of selected disposal or recycling facilities. PART 2: PRODUCTS [NOT USED] PART 3: EXECUTION 3.01 GENERAL A. Contractor shall demolish structures in a safe, orderly manner, which includes the use of temporary rails, barricades and nets in accordance with applicable Federal, State, and Local regulations; and shall protect all adjacent structures, utilities, and services during demolition. B. Contractor shall use demolition methods to reduce or eliminate vibrations that may cause damage to the existing spillway, powerhouse or adjacent private building structures. C. Precautions shall be taken to prevent damage to existing Work which is to remain in place, be reused or remain the property of Owner and to any new Work constructed or installed under this Contract. Any damage to such Work shall be repaired or replaced as approved by Owner at no additional cost to Owner. Contractor shall ensure that structural elements are not overloaded as a result of the demolition work. Shoring, bracing, and temporary supports shall be designed, installed and maintained, as required to maintain structural integrity. D. Dust resulting from demolition shall be controlled to avoid creation of a nuisance in the surrounding area. The use of water will not be permitted when it would result in or create hazardous or objectionable conditions such as erosion, transport of sediments into river, pollution, flooding or ice. E. Some materials may contain hazardous materials requiring special handling and disposal. Contractor shall test materials, and coordinate disposal location and acceptance in accordance with all Federal, State, and Local rules for handling and disposal of demolition materials, including proper safety precautions, personnel protection, and lawful transportation and disposal. F. The use of explosives will not be permitted. G. The burning of refuse and debris on the Project Site will not be permitted. H. Demolition debris shall be stored in the areas designated in the Drawings unless otherwise approved by Owner. I. Selective demolition shall be carefully measured, marked, hammered, and demolished with small tools to prevent over -demolishing and reinforcement damage. J. Demolished materials shall be periodically disposed of offsite unless approved otherwise by Owner. Care shall be taken to prevent refuse and debris from falling into any, wetland, or open water areas. Any debris or refuse that falls into these areas shall be removed promptly. City of Iowa City Demolition Iowa River Powerhouse Dam Repair Project 02 22 00-2 K. Demolition of materials specifically identified for salvage shall be carefully removed, handled, transported and stored to prevent damage. Material storage and delivery shall be coordinated with Owner and shall be Contractor's responsibility until Owner takes possession. 3.02 DISPOSAL A. Contractor shall promote sound waste management practices such as waste recycling to limit the amount of material sent to approved landfills. B. All removed material shall be properly recycled, salvaged, or disposed of in an approved landfill. Disposition of all removed materials shall be approved by Owner and in accordance with all Local, State, and Federal laws. C. Any hazardous materials shall be handled, transported, and disposed of at a landfill approved by Owner and according to federal, state and local laws. D. Demolished and removed materials shall be the property of Contractor. Owner stakes no claims to materials. E. Recycled materials shall be the property of Contractor. Owner stakes no claim to the materials. F. Salvaged materials shall be delivered to Owner at a location specified by Owner. 3.03 TRANSPORTATION OF DEMOLITION DEBRIS A. Contractor shall arrange for and provide transportation of demolition debris to off -site disposal or recycling facilities. B. Contractor shall provide all equipment, materials and labor to load all vehicles planned for transportation of demolition debris. 3.04 FIELD QUALITY CONTROL A. Contractor shall utilize equipment, materials, and procedures which are anticipated to meet the quality requirements specified. B. Contractor shall protect and preserve those items to be salvaged. END OF SECTION 02 22 00 h uM � y /_ W City of Iowa City Demolition Iowa River Powerhouse Dam Repair Project 02 22 00-3 SECTION 03 10 00 CONCRETE FORMS AND ACCESSORIES PART 1: GENERAL 1.01 SECTION INCLUDES A. Form work. B. Shoring. C. Form accessories. D. Form coatings. 1.02 RELATED SECTIONS A. Section 03 20 00 Concrete Reinforcement. B. Section 03 30 00 Cast -in -place Concrete. 1.03 REFERENCES A. Current editions of the following standards and publications. 1. ACI 117, Specifications for Tolerances for Concrete Construction and Materials and Commentary 2. ACI 347, Guide to Formwork for Concrete 3. ACI SP-4, Formwork for Concrete 1.04 SUBMITTALS A. No submittals are required for materials and supplies covered under this section which comply with the applicable specifications. 1.05 QUALITY ASSURANCE A. Design and engineering of formwork: 1. Responsibility of Contractor. 2. Designed for loadings, lateral pressures and allowable stresses in accordance with ACI 347 and ACI SP-4. 3. Designed, erected, supported, and maintained to safely support all vertical and lateral loads that might be applied, including construction loads and loads resulting from the placement and vibration of concrete. 4. Formwork supported on ground: Provide satisfactory foundations to carry the loads imposed during and after construction without appreciable settlement. 1.06 DELIVERY, STORAGE, AND HANDLING A. Protected from deterioration, weather, and shrinkage prior to concreting by proper storage, oiling, wetting, or other appropriate methods. B. Keep free of rust, rot, or other detrimental forms of deterioration. 1.07 SEQUENCING A. Forms designed so they may be removed in proper sequence and without damage to the concrete. City of Iowa City Concrete Forms and Accessories Iowa River Powerhouse Dam Repair Project 03 10 00-1 B. Sequence form erection and removal to match any concrete pours, curing, and any other adjacent or related work which may affect the placement, removal, or availability of any concrete formwork. PART 2: PRODUCTS 2.01 MATERIALS A. Forms: Wood, metal, or other approved material providing a smooth continuous surface in contact with concrete. B. Chamfer Strips: 1. Uniform in cross-section dimensions without rounded corners. 2. Smooth on all sides. 3. %-inch sides, unless noted otherwise on Drawings. C. Form Accessories: 1. Commercially manufactured ties and hangers embedded in the concrete. 2. Type which leaves no metal closer than 1 inch from the surface of the finished concrete. D. Form Coatings: 1. Non -staining chemical release agent which prevents bonding to concrete. 2. Compatible with the type of form materials used. 3. Acceptable agents include: North Central Form Release, Eucoslip Form Release, Nox- Crete form coating and Crembeton 103. 2.02 FABRICATION A. Type: pre -manufactured or constructed on -site. PART 3: EXECUTION 3.01 PREPARATION A. Thoroughly clean of all dirt, mortar, sawdust, and other foreign matter prior to use. Bottoms of forms inaccessible from within to be provided with access panels to permit removal of extraneous materials before placing concrete. B. Forms for exposed concrete: 1. Treated with non -staining release agent per manufacturer's recommendation. 2. Avoid placement of release agent on reinforcing steel, embedded anchorages, anchor bolts, bearing plates, or other items which require bonding to concrete. C. Openings in formwork: 1. Provide to accommodate any conduits, fixtures, or other appurtenances extending through the formwork. 2. Accurately locate, securely support, level, plumb, and straight items directly embedded into concrete. 3. Provide inspection hole as requested by Engineer to verify consolidation of concrete. G) City of Iowa City Concrete Forms and Accessories Iowa River Powerhouse Dam Repair Project 03 10 00-2 3.02 INSTALLATION A. Conform to the shape, lines, and dimensions of the components shown on the Drawings, true to line, plumb and level as required in ACI 117. B. Construct forms for exposed concrete to minimize deflection in order to eliminate bulges, off- sets, or other unsightly features in the finished surfaces. C. Provide camber to compensate for anticipated deflections in the formwork due to the weight and pressure of the plastic concrete and construction loads. D. Provide forms tight to prevent leakage of grout or cement paste. E. Anchors to be installed as shown on the Drawings and manufacturer's recommendations. Post - installed anchors shall be drilled to the depth shown on the Drawings, at a minimum, and the hole cleaned as recommended from manufacturer. 3.03 FORMWORK REMOVAL A. Minimum time before removal after placing concrete, unless permitted otherwise: 1. Footings and slab edges: 24 hours 2. Walls and piers: 48 hours (24 hours for metal -lined form) 3. Time specified above represents cumulative time during which temperature of concrete is maintained above 50 degrees F. B. In any event, do not remove forms or shoring until concrete has acquired sufficient strength to safely support its own weight and construction loads. C. Avoid hammering or prying against concrete surfaces to prevent damage to concrete. D. Do not place live loads on concrete structures prior to completion of the specified 28-day curing time without approval. END OF SECTION 03 10 00 __J J co City of Iowa City Concrete Forms and Accessories Iowa River Powerhouse Dam Repair Project 03 10 00-3 SECTION 03 20 00 CONCRETE REINFORCEMENT PART 1: GENERAL 1.01 SECTION INCLUDES A. Reinforcing steel. B. Welded wire fabric. C. Tie wire. D. Reinforcing support. 1.02 RELATED SECTIONS A. Section 03 10 00 Concrete Formwork. B. Section 03 30 00 Cast -in -Place Concrete. 1.03 REFERENCES A. Current editions of the following standards and publications. 1. ACI 117, Specifications for Tolerances for Concrete Construction and Materials and Commentary 2. ACI 315, Manual of Standard Practice for Detailing Reinforced Concrete Structures 3. ACI 318, Building Code Requirements for Structural Concrete and Commentary 4. ASTM Al85/A185M, Standard Specification for Steel Welded Steel Wire Reinforcement, Plain, for Concrete Reinforcement 5. ASTM A615/A616M, Standard Specification for Deformed and Plain Carbon Steel Bars for Concrete Reinforcement 6. ASTM A706/A706M, Standard Specification for Low Alloy Steel Deformed and Plain Bars for Concrete Reinforcement 7. ASTM A970/970M, Standard Specification for Headed Steel Bars for Concrete Reinforcement 8. ASTM A996/A996M, Standard Specification for Rail -Steel and Axle -Steel Deformed Bars for Concrete Reinforcement 9. CRSI, Manual of Standard Practice 1.04 SUBMITTALS A. Shop Drawings 1. Submit prior to start of work. 2. Show fabrication dimensions, bar sizes, location for placing reinforcing, and lap locations. B. Manufacturer's mill certificates: 1. Properties of the steel (i.e., mill tests) indicating chemical and physical properties. 1.05 QUALITY ASSURANCE A. Identify bar bundles with waterproof mark numbers on tags. City of Iowa City Concrete Reinforcement Iowa River Powerhouse Dam Repair Project 03 20 00-1 1.06 DELIVERY, STORAGE, AND HANDLING A. Store above the surface of the ground on platforms, skids or other supports. B. Protect from injury and surface deterioration caused by exposure to conditions producing rust. 1.07 SEQUENCING AND SCHEDULING A. Schedule placement and securing of reinforcing steel and formwork so that reinforcing work may be reviewed by Engineer before it becomes inaccessible. PART 2: PRODUCTS 2.01 MATERIALS A. Reinforcing bars: ASTM A615, A706, or A996 (Type R), A970, Grade 60. B. Welded wire fabric: ASTM A185. C. Bar supports: CRSI Manual of Standard Practice 1. Cold -drawn steel wire. 2. Type C plastic protected or type E stainless steel protected. 3. Precast concrete block. D. Tie wire: black annealed wire, 16 gauge or heavier. 2.02 FABRICATION A. Bent cold to the dimensions required before placing. B. Diameter of hooks and bends: ACI 315. PART 3: EXECUTION 3.01 PREPARATION A. Prior to placement of new concrete, clean reinforcement of loose rust and mill scale, earth, ice, cement, mortar, and other materials which reduce or prevent complete bond with concrete. 3.02 INSTALLATION A. Do not install bars with kinks or bends not shown on Drawings. B. Provide adequate chairs, ties, etc. to prevent bars or welded wire fabric from sagging or deflecting and to hold the reinforcement rigidly against displacement of the concrete. C. Precast concrete blocks may be used for concrete placed against ground. D. Tie reinforcing with wire at all cross points. E. Placement tolerance: ACI 117. F. Minimum concrete cover (unless otherwise specified): ry k';wJ 1. Concrete cast against and permanently exposed to earth: 3 inches 2. Concrete exposed to weather: 3 inches. ~ G. Tack welding of reinforcement is not permitted. H. Tension lap splices: ACI 318, Class B. City of Iowa City Concrete Reinforcement Iowa River Powerhouse Dam Repair Project 03 20 00-2 3.03 INSPECTION AND ACCEPTANCE A. Do not place concrete until reinforcing steel has been directly observed and accepted by Engineer. B. Notify Engineer 48 hours minimum prior to scheduled pour. END OF SECTION 03 20 00 City of Iowa City Iowa River Powerhouse Dam Repair Project 03 20 00-3 r� t.`.. C:w .. .. ) Concrete Reinforcement SECTION 03 30 00 CAST -IN -PLACE CONCRETE PART 1: GENERAL 1.01 DESCRIPTION A. All Work included in this Section shall be performed in accordance with the following paragraphs, the General Conditions set forth in these Specifications, and the provisions of the other Contract Documents. B. Furnish all labor, supervision, tools, machinery, equipment, transportation, materials and consumables to: 1. Repair concrete delamination, concrete spalls, and repair/replace reinforcement. 2. Fill voids within the dam embankment and undermining of spillway. 1.02 SECTION INCLUDES A. Concrete. B. Concrete curing. 1.03 RELATED SECTIONS A. Section 031000—Concrete Formwork. B. Section 032000—Concrete Reinforcement. 1.04 REFERENCES A. Current editions of the following standards and publications. 1. AISC 303, Code of Standard Practice for Steel Buildings and Bridges. 2. ASTM A36/A36M, Standard Specification for Carbon Structural Steel 3. ASTM A53/A53M, Standard Specification for Pipe, Steel, Black and Hot -Dipped, Zinc - Coated Welded and Seamless 4. ASTM A108, Standard Specification for Steel Bar, Carbon, and Alloy, Cold Finished 5. ASTM A563, Standard Specification for Carbon and Alloy Steel Nuts 6. ASTM C31/C31M, Standard Practice for Making and Curing Concrete Test Specimens in the Field 7. ASTM C33/C33M, Standard Specifications for Concrete Aggregates 8. ASTM C39/C39M, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens 9. ASTM C94/C94M, Standard Specification for Ready Mixed Concrete 10. ASTM C143/C143M, Standard Test Method for Slump of Hydraulic -Cement Concrete 11. ASTM C150/C150M, Standard Specification for Portland Cement 12. ASTM C171, Standard Specification for Sheet Materials for Curing Concrete 13. ASTM C231 /C231 M, Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method 14. ASTM C260/C260M, Standard Specification for Air Entraining Admixtures for Concrete City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-1 15. ASTM C309, Standard Specification for Liquid Membrane -Forming Compounds for Curing Concrete 16. ASTM C494/C494M, Standard Specification for Chemical Admixtures for Concrete 17. ASTM C618, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete 18. ASTM C938, Standard Practice for Proportioning Grout Mixtures for Preplaced- Aggregate Concrete 19. ASTM C989, Standard Specification for Slag Cement for Use in Concrete and Mortars. 20. ASTM C1240, Standard Specification for Silica Fume Used in Cementitious Mixtures. 21. ASTM C1602, Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete. 22. ASTM F1554, Standard Specification for Anchor Bolts, Steel, 36, 55, and 105 KSI Yield Strength 23. ACI 117, Specifications for Tolerances for Concrete Construction and Materials and Commentary 24. ACI 301, Specifications for Structural Concrete 25. ACI 305R, Guide to Hot Weather Concreting 26. ACI 306R, Guide to Cold Weather Concreting 27. ACI 308R, Guide for Curing Concrete 28. ACI 309R, Guide for Consolidation of Concrete 29. ACI 318, Building Code Requirements for Structural Concrete and Commentary 30. ACI 347R, Guide to Formwork for Concrete 31. CSRI Manual of Standard Practice 32. MN/DOT Standard Specifications for Construction 1.05 SUBMITTALS A. Manufacturer's descriptive literature and product specifications for each product. B. Shop Drawings: 1. Steel reinforcing (see Section 03 20 00) C. Batch Plant Qualifications 1. Plant's name 2. Address r+ 3. Phone number 4. Distance and travel time to site D. Concrete Mix Design -b 1. Submit for each mix at least 15 days prior to start of work a. Basis for mix design (by concrete production facility or laboratory trial'mixes)' b. Identification of aggregate source and compliance test to ASTM requirements- C. ASTM C1260 Accelerated Mortar Bar Test on the aggregate(s) d. Compressive strength at 28 days e. Water to cement ratio City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-2 f. Scale weights of each aggregate g. Absorbed water in each aggregate h. Brand, type, and amount of cementitious material in mix i. Proportions of each material required per cubic yard j. Admixtures k. ASTM C1260 Accelerated Mortar Bar Test to evaluate ASR potential of the aggregate(s). 2. Do not change mix designs and supplier unless new batch plant qualifications and mix designs are submitted. 1.06 QUALITY ASSURANCE A. Contractor Qualifications: 5 years minimum experience on comparable concrete projects. B. Workmen Qualifications: 1. Competent and experienced foreman in placing the types of concrete specified. 2. Trained and experienced concrete finishers. C. Contractor: 1. For each batch of concrete delivered to the jobsite provide one signed copy of the delivery ticket in accordance with ASTM C94 to Owner's Representative as proof of acceptance or rejection of concrete. D. Independent Testing Agency: 1. Trial mix a. Obtain samples b. Perform laboratory testing C. Provide reports on materials, concrete design mixed, and testing performed 2. Field testing: see Part 3 PART 2: PRODUCTS 2.01 CEMENTIOUS MATERIAL A. Portland Cement: ASTM C150, Type II. 1. Free from water-soluble salts or alkalies, which will cause efflorescence on exposed surfaces. B. Pozzolanic Mineral Admixture 1. Fly Ash: ASTM C618, Class C or F 2. Silica fume: ASTM C1240. -� 3. Slag cement: ASTM C989, Grade 100 or 120. 4. Minimum amount (if used): 15%, by weight, of total cementious material. C. Grout w ` 1. Simpson FX-225 - fNw 2. Or approved equal 3. ASTM C938 for mixture testing D. Use only one brand and type of cementitious materials. City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-3 2.02 AGGREGATES A. Fine Aggregates: ASTM C33 for grading. B. Coarse Aggregates: ASTM C33 for grading. 1. Maximum aggregate size a. 3/4-inch: concrete sections 12 inches and less in thickness. C. Aggregates shall meet ASTM C1260 Accelerated Mortar Bar Test. 2.03 WATER A. ASTM C1602. Clean, potable, and free from injurious amounts of oils, acids, alkalies, salts, organic materials, or other substances that may be deleterious to concrete or steel. 2.04 ADMIXTURES A. No admixtures, except air -entraining agent, anti -washout agent, and water reducing admixture without approval of Engineer. Do not use calcium chloride. B. Air -entraining agent: ASTM C260 1. Acceptable products: a. AEA-2 by Euclid Chemical Co. b. Darex II by W.R. Grace C. MasterAir Series by BASF Corporation. d. Approved equal. C. Water -reducing admixture: ASTM C494, Type A 1. Acceptable products: a. Eucon WR 91 by Euclid Chemical Co. b. WRDA-82 by W.R. Grace C. MasterPozzolith Series or MasterPolyheed Series by BASF Corporation. d. Approved equal. D. Anti -washout agent: ASTM C494 Type S (if used). 2.05 MIXES A. Base proportioning of materials on previous field experience of concrete production facility or by laboratory trial mixes in accordance with ACI 301 or ACI 318. B. Minimum 28-day specified compressive strength and required average compression: ASTM C39. Specified Required Average Concrete Type/Description Compressive Compressive Strength f,, Strength fir Concrete exposed to freezing and thawing 4500 psi 5700 psi cycles with frequent exposure to water (F2) City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-4 Concrete exposure classes: Freezing and Sulfate Permeability Corrosion Thawing (S) (P) Protection (F) (C) Class F2 Class SO Class P1 Class C1 C. Required average compressive strength: produce concrete of average compressive strengths unless documented test results substantiate a lower permissible average strength based on the standard deviation established in ACI 301 or ACI 318. D. Cementitious Material Content 1. Quantity required to meet the specified requirements for strength, water -cement ratio, durability, and finishing ability. E. Water -Cement Ratio: 1. 0.45 maximum for concrete exposed to freezing and thawing in a moist condition or to deicing chemicals and for watertight concrete F. Air -Entrainment 1. For concrete exposed to freezing and thawing: Nominal Max. Size Coarse Aggregate Total Air Content 3/4 inch 6% + 1 G. Slump: 1. At the point of discharge from the transport vehicle, provide concrete slumps within the following limits: 2 Type of Construction Slump in Inches Maximum Minimum Reinforced foundation walls and footings 4 2 Fibers: ASTM C116. Strux 90/40 as manufactured by Grace Construction. Dossage: 4-51b per cubic yard. 2.06 READY -MIX CONCRETE A. Provide concrete from an established, certified ready -mix plant. B. Certified ready -mix plant equipment and facilities per Iowa/DOT Materials (IM 211). 2.07 CURING MATERIALS A. Waterproof paper (non -staining): ASTM C171, regular or white. B. Burlap: commercial quality and non -staining. C. Polyethylene Sheeting: ASTM C171 (4 mil minimum thickness). City of Iowa City Iowa River Powerhouse Dam Repair Project 03 30 00-5 c-!y —icw Cast -in -Place Concrete D. Membrane Curing Compound: ASTM C309. 1. Acceptable products: a. CS-309 Curing & Sealing Compound (VOC) as manufactured by W. R. Meadows, Inc. b. Approved equal. 2.08 REPAIR MORTAR: A. SikaRepair 224 as manufactured by Sika or approved equal. 1. Application depth: 3/8" to 2" (per lift). B. EucoRepair V100 as manufactured by Euclid Chemical or approved equal. 1. Application depth: 1/8" to 4" (per lift). C. Sikacrete-211 SCC Plus as manufactured by Sika or approved equal. 1. Application depth: 1" to 8" (per lift). 2.09 SPILLWAY VOID FILL MATERIAL A. Material placed in voids within the dam embankment if voids are observed. Spillway void fill material shall contain Portland cement, flyash, water and admixtures (as approved). Backfill grout shall meet the below design requirements. 1. Slump (ASTM C143): 7-10 inches 2. Unconfined compressive strength (ASTM C39): 500 psi minimum 2.10 EPDXY ADHESIVE AND ANCHORS A. Anchor dowels or anchor bolts and epoxy adhesive for attaching anchor dowels or anchor bolts into existing concrete B. Anchor rods shall meet stainless steel, ASTM A193, Grade B8, Class 1 C. Adhesive shall be Hilti Hit -RE 500 v3, for all underwater installation, Hilti Hit HY 200-R, all other conditions, or Engineer -approved equal. PART 3: EXECUTION 3.01 APPLICATION A. Install all material in accordance with manufacturer's instructions. 3.02 PREPARATION A. Remove flowing water before concrete is deposited. Divert any flow of water without flowing over freshly deposited concrete. B. Do not place concrete on frozen ground. C. Apply form coating on formwork (see Section 03 10 00). Apply prior to placing reinforcing steel, anchoring devices, and embedded items. D. Prior to concrete placement, install, prepare, and inspect concrete reinforcement per Section 03 2000. E. Subgrade to be well drained, free of frost, and moisture at the time of concrete placement. If necessary, dampen with water in advance of concrete placement, but no free water standing on either the subgrade or any muddy or soft spots when the concrete is placed. _ City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-6 F. Screeds: Properly support to maintain required thickness of slabs. Place bulkheads to construction joint limits. G. Install items to be embedded in concrete. Fasten embedded items securely into position before placing concrete. 3.03 TRANSPORTING CONCRETE: ASTM C94 A. Discharge and place in its final position concrete delivered to the site in watertight revolving - drum trucks within 60 minutes for concrete that does not include retarder and 90 minutes for concrete that includes retarder, or before the drum has revolved 300 revolutions, whichever comes first, after the introduction of the mixing water to the cement and aggregates or the introduction of the cement to the aggregates. The use of additional water reducer beyond the specified amount by the manufacturer shall not be used to retard the concrete. 3.04 PLACING CONCRETE A. Remove hardened concrete debris and foreign materials from the inner surfaces of conveying equipment. B. Weather Protection 1. Cold Weather a. Applies to concrete placed when the ambient temperature is below 40 degrees F. b. Conform to recommendations and requirements of ACI 306R. C. Concrete damaged by freezing to be removed and replaced at Contractor's expense. d. Prevent substrate from freezing, covering and heating if needed to prevent substrate from freezing. e. Minimum temperature of concrete to be placed is 55 degrees F. f. Protect concrete from cold for at least 5 days after placement. Minimum temperature of concrete during protection period is 55 degrees F. Temperature monitoring (ie thermal couples) shall be provided and temperatures reported to Owner. g. Calcium chloride shall not be used. h. To maintain the temperature specified, the work shall be entirely enclosed, and all fueled and suitable heating equipment and necessary labor and supervision shall be furnished. Non -vented heaters shall not be used within enclosures where concrete slabs are being cured as to prevent the unfavorable reactions between carbon dioxide and fresh concrete. i. Any concrete not meeting the requirements above shall be removed and reconstructed at Contractor's expense. 2. Hot Weather a. Applies to concrete placed when the ambient temperature exceeds 90 degrees F. b. Conform to recommendations and requirements of ACI 305R. C. Place concrete continuously in each section until complete. Concrete surfaces not permitted to stand more than 30 minutes before new concrete is placed against them. D. Concrete which has started to set or which is retempered with water shall not be used and shall be removed from the Site. No compensation will be provided for concrete which has started to set, is retempered with water, or is removed from the Site for any other reason. E. Avoid segregation during placement. Place in uniform lifts not to exceed 18 inches. F. Do not drop concrete more than 5 feet. When greater drops are required, employ clro_p chutes or other approved means. `D c'.' City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-7 G. Consolidation: 1. Consolidate concrete by vibration so that concrete is worked around the reinforcement, around embedded items, and into corners of forms. 2. Use internal vibrators of the largest size and the most powerful that can be properly used in the Work, per ACI 301 and ACI 309R. 3. Vibrators to be operated by competent workmen. 4. Do not use vibrators to transport concrete within forms. 3.05 FINISHING A. Unformed Surface 1. Top of Walls and Other Unformed Surfaces: Strike smooth and float to a texture consistent with finish of adjacent formed surface. B. Formed Surface 1. Patch tie holes. Repair surface defects according to ACI 301. 2. Rough form finish of concrete not exposed: Chip off or rub off fins exceeding '/2 inch in height. 3. Smooth form finish of exposed concrete: Remove fins exceeding 1/8 inch in height. C. Repair of Surface Defects: ACI 301 1. Surface defects include tie holes, honeycombed areas, and spalled and pitted areas resulting from concrete sticking to the forms. 2. Fill tie holes with patching mortar after being cleaned and thoroughly dampened. 3. Repair of surface defects other than tie holes: a. Provide'/2 inches to % inch deep saw cut around perimeter b. Remove unsound concrete C. Dampen patch area plus an additional 6 inches beyond perimeter d. Apply bonding agent by thoroughly brushing into surface 1) Bonding Grout: One part cement, one part fine sand with water to consistency of thick cream. e. Apply batching mortar when bond coat loses water sheen. f. Patching mortar 1) Same materials as concrete to be patched with no coarse aggregate. 2) Do not use more than one part cement to 2'/2 parts sand by loose volume. 3) For exposed surfaces, make trial batch to check color compatibility with repair surface. Substitute white cement if color is too dark. 4) Use mortar at a stiff consistency. Add no more mixing water than required for handling and placing. g. Do not use proprietary compounds for adhesion or as patching ingredients without approval. r: 3.06 CURING AND PROTECTION: ACI 301 AND 308R A. Start curing as soon as free water has disappeared from unformed surfaces ar immediately after forms are removed. B. Accomplish curing and protection by preventing loss of moisture, rapid temperature cha,gge, mechanical injury, or damage from rain, frost, or flowing water for at least 7 days. C. Formed surfaces may be cured by leaving forms in place. City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-8 D. Unformed surfaces, slab surfaces, and surfaces from which forms have been removed: Cure by one of the following application methods: 1. Absorptive mats or fabric kept continuously wet. 2. Waterproof sheet materials. 3. Curing compound. a. Apply the compound according to manufacturer's directions b. Apply immediately after finishing operations are completed or after forms are removed. C. Apply sufficient quantity to ensure the formation of a continuous unbroken film over the entire area of the exposed surface. Re -spray surfaces damaged by subsequent construction operations during the curing period. d. Keep surfaces coated with curing compound free of foot and vehicular traffic and other sources of abrasion during the curing period. e. Do not use of any membrane material which will impart a slippery surface to the concrete or alter its natural color. f. If the concrete surfaces, which are to receive curing compound, are expected to be exposed to freezing temperatures within 5 days, do not use the membrane -curing compound. 3.07 CAST -IN -PLACE CONCRETE TOLERANCES: ACI 117 3.08 FIELD TESTING A. Performed by an Independent Testing Agency retained and paid for by Owner: B. Testing Location 1. Slump a. Tested at concrete truck. b. Prior to the placement of any concrete, Owner may take a slump test. When the slump is greater than the allowable, Owner will reject the concrete and Contractor shall remove the concrete from the Site. Addition of water to compensate for stiffening of the concrete before placing will not be allowed. Slump will be tested once for each truck or as directed by Owner. 2. Air Content a. Tested at concrete truck. b. Air content determinations will be made by Owner. If the measured air content falls outside of the specified limits, the placing of concrete shall immediately be stopped, and Owner will immediately make another air content determination from the same batch. In the event of a second failure, the concrete shall be considered to have failed to comply with the Specifications, and Contractor shall remove all of the concrete of that batch from the Site. Air content will be tested once per truck or as directed by Owner. 3. Temperature a. Tested at concrete truck. t- 4. Strength a. Tested at concrete truck CD City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-9 C. Test Frequency Test Frequency Pre -test first load before unloading and test each time a set of compressive strength test cylinders are cast. Air Content (ASTM C231) In addition at least two air content tests on randomly selected batches for each class of concrete produced during each 8-hour or less period of concrete production each day. Pre -test first load before unloading and test each time a set of compressive strength test cylinders are cast. Slump (ASTM C143) In addition at least two slump tests on randomly selected batches for each class of concrete produced during each 8-hour or less period of concrete production each day. Temperature (ASTM C1064) Hourly when air temperature is less than 40°F and greater than 80°F Set of four 6-by-12 in. cylinders or set of five 4-by-8 in. cylinders for each class of concrete, for initial 50 cy and then for every subsequent 150 cy each day or one Concrete Test Cylinders (ASTM set each day. C31) If total volume of concrete is such that frequency of testing required would provide less than five strength tests for a given class of concrete, test shall be made from at least five randomly selected batches or from each batch if fewer than five batches are used. One test cylinder at 7 days Compressive Strength (ASTM Two 6-by-12 in or three 4-by-8 in test cylinders at 28 C39) days One test cylinder retained for future testing D. Perform additional tests when excessive variation in workability is observed. E. Samples will be taken at the point of delivery in accordance with ACI 301. However Contractor is responsible for delivering the concrete to the placement site at the stipulated air content and slump. If Contractor's material or transportation methods cause air content or slump loss between the mixer and the placement, correlation samples shall be taken at the placement site as required by Owner's Representative. Air content or slump at the mixer shall be controlled as directed. F. Plot results on control charts which at all times are readily available to Owner. G. Whenever air content or slump does not meet the requirements, immediately adjust the amount of admixtures batched. As soon as is practical after each adjustment, conduct another test to verify the result of the adjustment. H. Air Content Testing: Plot test results on control charts which shall at all times be readily available to Owner's Representative and submitted weekly. Keep copies of the current control charts in the field by testing crews and results plotted as tests are made. When a single test result reaches either the upper or lower action limit, perform a second test immediately. The results of the two tests shall be averaged and this average used as the air content of the batch to plot on both the air content and the control chart for range, and for determining need for any remedial action. The result of each test, or average as noted in the previous_sentenge, shall be plotted on a separate control chart for each mixture on which an "average line" is set at the City of Iowa City Cast-in-Pjace Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-10 midpoint of the specified air content range from paragraph Air Entrainment in 2.05.E. Set an upper warning limit and a lower warning limit line 1.0 percentage point above and below the average line, respectively. An upper action limit and a lower action limit line shall be set 1.5 percentage points above and below the average line, respectively. The range between each two consecutive tests shall be plotted on a secondary control chart for range where an upper warning limit is set at 2.0 percentage points and an upper action limit is set at 3.0 percentage points. Air Content Corrective Action: Whenever points on the control chart for percent air reach either warning limit, an adjustment shall immediately be made in the amount of air entraining admixture batched. As soon as practical after each adjustment, another test shall be made to verify the result of the adjustment. Whenever a point on the secondary control chart for range reaches the warning limit, the admixture dispenser shall be recalibrated to ensure that it is operating accurately and with good reproducibility. Whenever a point on either control chart reaches an action limit line, the air content shall be considered out of control and the concreting operation shall immediately be halted until the air content is under control. Additional air content tests shall be made when concreting is restarted. Slump Testing - Plot test results on control charts which shall at all times be readily available to Owner's Representative and submitted weekly. Keep copies of the current control charts in the field by testing crews and results plotted as tests are made. When a single slump test reaches or goes beyond either the upper or lower action limit, immediately perform a second test. The results of the two tests shall be averaged and this average used as the slump of the batch to plot on both the control charts for slump and the chart for range, and for determining need for any remedial action. Set limits on separate control charts for slump for each type of mixture. The upper warning limit shall be set at 1/2 inch below the maximum allowable slump specified in paragraph Slump in 2.05.D for each type of concrete and an upper action limit line and lower action limit line shall be set at the maximum and minimum allowable slumps, respectively, as specified in the same paragraph. The range between each consecutive slump test for each type of mixture shall be plotted on a single control chart for range on which an upper action limit is set at 2 inches. K. Slump Corrective Action - Whenever points on the control charts for slump reach the upper warning limit, make an adjustment immediately in the batch weights of water and fine aggregate. The adjustments are to be made so that the total water content does not exceed that amount allowed by the maximum w/c ratio specified, based on aggregates which are in a saturated surface dry condition. When a single slump reaches the upper or lower action limit, no further concrete shall be delivered to the placing site until proper adjustments have been made. Immediately after each adjustment, another test shall be made to verify the correctness of the adjustment. Whenever two consecutive individual slump tests, made during a period when there was no adjustment of batch weights, produce a point on the control chart for range at or above the upper action limit, halt the concreting operation immediately, and take appropriate steps to bring the slump under control. Additional slump tests shall be made as directed. L. Excessive slump or concrete not meeting specification requirements to be rejected and removed from the site at Contractor's expense. M. Laboratory -cured test cylinders: 1. Cover and keep at air temperature between 60 degrees F and 80 deg(-ees F for the first 24 hours. At end of 24 hours, carefully transport cylinders to testing laboratory., 2. Acceptance test results are the strengths of the two specimens tested at,28 days? N. Excessive slump or concrete not meeting specification requirements to be rejected and„., removed from the site at Contractor's expense. O. Laboratory -cured Test Cylinders 1. Cover and keep at air temperature between 60 degrees and 80 degrees F for the -first 24 hours. At end of 24 hours, carefully transport cylinders to testing laboratory. City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-11 2. Acceptance test results are the strengths of the two specimens tested at 28 days. P. Field -cured Test Cylinder (if Contractor or Owner requests) 1. Use for determination of form removal 2. Check adequacy of curing 3. Provide additional confirmation of 28-day strength 4. Place the cylinder as near as possible to the final location of the concrete from which the sample was taken. 5. Provide the same curing and protection as the adjacent concrete. Q. In the event that tests indicate that concrete placed does not conform to specifications, take corrective measures to correct the deficiency at no additional cost to Owner. 3.09 CLEANUP A. After completion of concrete Work, leave the structure and surrounding area clean and neat for commencement of subsequent construction or equipment installation. END OF SECTION 03 30 00 P r� City of Iowa City Cast -in -Place Concrete Iowa River Powerhouse Dam Repair Project 03 30 00-12 SECTION 31 23 19 CONTROL OF WATER PART 1: GENERAL 1.01 DESCRIPTION A. All Work included in this Section shall be performed in accordance with the following paragraphs, the General Requirements set forth in Division 1 of these Specifications, and the provisions of the other Contract Documents. B. The Work covered by this section involves: 1. Installation of a bypass system or method to manage stormwater inflows 2. Installation of a cofferdam system upstream and downstream of the primary spillway 3. Dewatering of the primary spillway work area 4. Maintenance and operations of the primary spillway bypass system and cofferdams for the duration of construction C. The Work covered by this Section consists of furnishing all labor, equipment, materials, and performing all operations necessary to control water in the work areas shown on the Drawings and specified herein. This work includes providing, operating, and maintaining pumps and/or dewatering systems along with any cofferdams, temporary barriers, water plugs, or temporary piping necessary to allow the proper construction of the Work. D. Contractor shall restore any affected areas to a condition equal to or better than the condition prior to commencement of construction. 1.02 ENVIRONMENTAL REQUIREMENTS A. Contractor shall carry out the control of water in compliance with all Federal, State, and local applicable stream discharge and pollution requirements. 1.03 SUBMITTALS A. At least 10 days before mobilization, submit a proposed water control and management plan to Engineer for review and approval. The water control and management plan may deviate from what is shown in the Drawings. If earthen cofferdams are used, the design of the earthen cofferdams must be certified by a Professional Engineer registered in the state of Iowa. Review and approval of water control and management plan does not relieve Contractor from complete responsibility for water control and management at the site. The water control and management plan should address the following: 1. Cofferdam products, materials, and/or design(s) 2. Cofferdam locations 3. Cofferdam elevations c 4. Construction procedures and sequencing �., 5. Dewatering of work areas r._.. CD --a 6. Control of surface water and seepage; 7. Maximum and minimum water levels during construction 8. Water level monitoring 9. Method to manage flood flows City of Iowa City Control of Water Iowa River Powerhouse Dam Repair Project 31 23 19-1 B. At least 10 days prior to installing components for Contractor's water control and management plan, Contractor shall develop and submit a temporary construction emergency action plan (TCEAP) to Engineer for review and approval. The TCEAP shall include the following information: 1. Definition of potential failure modes of Contractor's protected work area. 2. Actions Contractor will take to mitigate a potential failure or problem with the water control plan protection features that could impact the project area. 3. Actions Contractor will take to respond to an emergency that may impact the project area. 4. Definition of responsibilities and coordinate for those involved in managing an incident. PART 2: PRODUCTS 2.01 COFFERDAMS A. Cofferdam locations to be determined by Contractor to meet Contractor's construction approach and its method to safely manage surface and ground water during construction. B. Cofferdams shall not be constructed of loose fill in direct contact with flow that provides the ability for fill to erode. C. Acceptable cofferdam products may include earthen materials, sand bags, portadam, water inflated dams, Jersey barriers, or sheet pile. Cofferdam products, materials, or designs must be reviewed and approved by Engineer, as part of the water control and management plan, prior to construction. PART 3: EXECUTION 3.01 CONTROL OF WATER A. Contractor will be required to manage the work area during construction as necessary to protect the Work and Contractor's equipment, material, and personnel, and according to all applicable laws and regulations. B. Contractor shall be responsible for detailed development of sequencing and staging of construction and control of water in the Work area. C. Cofferdams designated as "By Contractor" on the Drawings shall be designed and constructed of adequate depths and heights, be safely constructed and be water -tight as necessary for the proper performance of the work. The interior dimensions of the cofferdam area shall give sufficient clearance to accommodate construction work. D. Contractor shall be responsible for monitoring water surface elevations during construction. If the water surface elevation exceeds the selected maximum water surface elevation (accounting for freeboard), Contractor shall stop work and consult with Engineer. E. Contractor shall maintain all systems for controlling water for the period required to complete the Work. F. Contractor shall remove all systems for controlling water and restore these areas to theit prior level of service as part of this Work. G. Contractor shall maintain all systems for controlling ice for the period required'to.complete the work. . , rCJ - City of Iowa City Control of Water Iowa River Powerhouse Dam Repair Project 31 23 19-2 H. Contractor shall be solely responsible for mean and methods, integrity of any cofferdams or dewatering methods, etc. including maintaining integrity of dam function and ensuring safety of public and workers. I. Excavation of any portion of the dam embankment to facilitate passage of flows through the site will not be permitted. END OF SECTION 31 23 19 City of Iowa City Iowa River Powerhouse Dam Repair Project 31 23 19-3 f„ Control of Water Origin Design 4155 Pennsylvania Ave., Dubuque, IA 52002 563 556-2464 origindesign. com Dam Inspection Report • • origin design Structure ID Iowa River Power Company Dam/Coralville Milldam Inspection National Inventory ID: IA01275 Date 05/11-13/2021 ----------------- ---- Location ---------------------------------------------------------------------------------- Section, Township, Range: Supervising Nathan Miller, P.E. SE,S05,T079N,R06W Engineer ------- - -- ---------------- Description-- Cast -in -Place Concrete, Low Head, Overflow Dam Origin Design 20114 Project No. Orientation Upstream (US): North Downstream (DS): South Summary of Intent. Inspection Procedures. and Limits • Origin Design was contacted by the Iowa City Engineering Department to render our opinion as to the condition of the Powerhouse Dam on the Iowa River. This report is intended to summarize the observed condition of the structure and identify potential safety issues. • Our observations have been limited to readily available surface conditions. No destructive or invasive testing procedures, load rating, or detailed measurements have been performed as part of this inspection. Isolated dye tracing was performed. Origin Design reserves the right to revise our opinions if additional evidence becomes available. • The inspection was performed by certified commercial divers employed by Great Lakes Diving & Salvage (GLDS) with onsite engineering oversight by a Professional Engineer licensed to practice in the State of Iowa employed by Origin Design. The GILDS dive team consisted of Tom Gouin (dive supervisor), Tyler Eyth (primary diver), Noah Moorzynski (standby diver/tender), and Justin Marcum (standby diver/tender). The dive team utilized surface supplied air and the diver was largely tended from pedestrian bridge directly over the dam. The diver was equipped with video camera and the entire dive was recorded from the dive trailer. The video recording serves largely as a record of verbal communication between the engineer and the diver as visibility was limited due to water clarity and turbulence. • River flow levels were coordinated with the following: o Chris Trefry. Chief, Water Control Section, United States Army Corps of Engineers, Rock Island District. Phone 309.794.5849. • Tuesday, May 11, 2021: o Dive station & rigging set up. High water flows represented unsafe conditions. Divers remained on standby as additional flow reductions were coordinated with USACE. • Wednesday, May 12, 2021: o Underwater inspection of the upstream dam slope, including any exposed concrete surfaces from steam bed to crest of dam (incl. pier columns & footings), completed from east to west. o Underwater inspection of the upstream dam slope, following the intersection of the steam bed & upstream dam slope, completed from west to east. o Underwater inspection of the downstream dam face, including approximately 5ft of the vertical dam face and 5ft of the horizontal dam apron, completed from east to west. o Underwater inspection of the downstream apron, following the intersection of the apron & steam bed, completed from west to east. • Thursday, May 13, 2021: o Underwater inspection of the downstream apron, following the intersection, of the,apron & steam bed (moving east to west) with a specific focus on locating hole irr apron with negative pressure (suction) identified the previous day. Diver unable to locate hole after 2-hours, completing a detailed inspection of the area. Diver re -traced the intersection of the apron and streambed from east to west. o Underwater inspection of the downstream apron, following a line approximately midway between the dam face and streambed, completed from west to east. • • City of Iowa City origin Page 2 of 4 o Dye tracing of void in crest of dam completed. o Underwater inspection of the upstream streambed, following a line approximately 15ft upstream of the pedestrian bridge to identify any localized depressions or signs on piping. o Dive station demobilized. Summary of Observed Conditions Refer to Exhibit 1 for detailed descriptions of specific deficiencies and conditions. • General Upstream Conditions o Streambed was found to cover the upstream slope of the dam structure generally following a line near the upstream truss chord. Streambed material was rocky/rubble with the material size increasing from west to east. o The upstream edge of the dam structure was completely covered by the streambed and was not encountered during the inspection. o The concrete on the upstream slope of the dam structure was in generally fair condition with a surface amplitude of +/-1 n. Isolated spalling was observed throughout with a typical size of bin dia. by 2in deep. Surface roughness of exposed concrete surfaces increased from west to east. o Poured concrete rubble piles with protruding reinforcing were found under the splice plate locations of the pedestrian bridge above. These are likely remnants from temporary support used during erection of the pedestrian bridge. • General Downstream Conditions: Vertical Dam Face o The vertical face of the dam terminated directly into the concrete apron. No revetment was observed at this transition. The base of the dam face typically included a portion of loose - poured concrete that extended approximately 5ft from the dam face and 3ft from the concrete apron. A portion of stepped concrete (2ft x 2ft) was observed on the vertical wall, generally located 1ft above the loose -poured concrete referenced above. Both the loose -poured concrete and the stepped concrete were observed intermittently along the length of the dam structure. o The concrete on the dam face was in generally fair condition with a surface amplitude of +/- lin. Areas of surface damage (gouging) was observed throughout with a typical size of 6in dia. by 2in deep with isolated areas up to 1ft deep. o Remnants of the previous "fish -ladder" structure were observed near the west abutment. • General Downstream Conditions: Apron o Streambed was found to cover the downstream end of the concrete apron generally following a line approximately 30ft from the vertical dam face. Streambed material was revetment. o The downstream end of the apron was completely covered by the streambed and was not encountered during the inspection. o The concrete on the downstream apron appeared to be unfinished/rough-poured with a surface amplitude of +/- 2ft. Several elevation changes of 3ft-5ft were encountered throughout. The concrete in these areas appeared intact and did not show signs of damage. Summary of Repair Recommendations • Repair of the following deficiencies is recommended: , o Station 00+75 (DS): Surface damage to downstream vertical dam face., o Station 01+40(DS): Void near base of downstream vertical dam face. , ..., c o Station 01+40(US): Void near upstream crest of dam with negative pressure (suction). Dye tracing performed and dye leeched out of embankment near Station Q3+10.' o Station 01+40(DS): Void near base of downstream vertical dam face. o Station 01+49(US): North end of Pier 1 footing undermined. o Station 01+49(DS): Spalled concrete with exposed reinforcing on apron..' o Station 01+64(DS): Void in apron with negative pressure (suction) at streambed?revetment line (video timestamp 05/12/202115:02). ■ Additional investigation into the cause of this negative pressure is required as it could be a sign of hydraulic piping under the dam. o Station 02+20(US): Rebar protruding from poured concrete rubble. City of Iowa City origin Page 3 of 4 des i g n' o Station 02+20(DS): Void between vertical dam face and concrete apron. o Station 02+60(DS): Void near base of vertical dam face. o Station 02+94(US): Void near base of Pier 2 column, west face. o Station 03+00(DS): South end of Pier 2 encasement undermined. Inspection Photos: All photos taken at above referenced inspection dates) unless noted otherwise Photo 1 I Downstream face of Pier 2 Tracing dye leeching through embankment near Pier 2. (Approx. STA 3+12.) Photo 2 1 Downstream face of Pier 2 Tracing dye leeching through embankment near Pier 2. (Approx. STA 3+12.) 'Exhibit 1: Inspection Elevation and Plan shall be considered part of this report. 05/20/2021 , Nathan W. Miller Date n? City of Iowa City Page 4 of 4 origin design Iowa River Power Company Dam/Coralville Milldam Inspection Iowa River Flow & Discharge Tracking Coralville Dam: STA: 5453520' Dam" Burlington St: STA: 05454500' Gauge Ht, ft Discharge, cfs Flow Ht @ Crest Gauge Ht, ft Discharge, cfs Time Delta Delta ft Delta Delta 05.11.2021 6:00 50.22 - 1,440 - - 11.12 - 2,130 - 7:00 50.02 0.20 1,210 230 - 11.12 0.00 2,130 - 8:00 49.86 0.16 1,030 180 - 11.09 0.03 2,100 30 9:00 49.77 0.09 931 1 99 - 11.03 1 0.06 2,040 60 10:00 49.72 0.05 876 55 - 10.93 0.10 1,940 100 11:00 49.61 0.11 759 117 - 10.83 0.10 1,850 90 12:00 49.51 0.10 652 107 - 10.73 0.10 1,750 100 1:00 49.46 0.05 603 49 - 10.61 0.12 1,630 120 2:00 49.43 0.03 573 30 0.650 10.5 0.11 1,530 100 3:00 05:12:021 Y.. xWVW_.; - .z. 10.68 - 1,700 - 6:00 49.93 - 1,110 - 7:00 49.73 0.20 887 223 - 10.7 -0.02 1,720 (20) 8:00 49.5 0.23 642 245 0.650 10.7 0.00 1,720 - 9:00 49.35 0.15 490 152 0.505 10.61 0.09 1,630 90 10:00 1 49.26 0.09 399 1 91 0.400 10.52 1 0.09 1,520 110 11:00 49.2 0.06 341 58 0.400 10.33 0.19 1,380 140 12:00 49.19 0.01 306 35 - 10.18 0.15 1,250 130 1:00 49.16 0.03 306 - - 10.03 0.15 1,120 130 2:00 49.14 0.02 290 16 0.350 9.9 0.13 1,010 110 3:00 49.13 0.01 272 18 - 9.78 0.12 913 97 4:00 05.12.2021 6:00 49.95 - 1,130 - - 10.63 - 1,650 - 7:00 49.66 0.29 812 318 - 10.65 -0.02 1,670 (20) 8:00 49.46 0.20 573 239 0.600 10.62 0.03 1,640 30 9:00 49.3 0.16 442 131 0.500 10.49 0.13 1,520 120 10:00 49.22 0.08 359 83 - 10.33 0.16 1,380 140 11:00 49.18 0.04 323 36 - 10.17 0.16 1,240 140 12:00 49.14 0.04 290 33 - 10.01 0.16 1,100 140 1:00 49.15 -0.01 298 (8) 0.400 9.87 0.14 985 115 2:00 49.15 298 9.87 985 3:00 0.00 - 0.00 - 4:00 *https://waterdata.usgs.gov/monitoring-location/05453520 "Flow Height @ Crest Measured at SW Overlook Near Light Pole "'"https://waterdata.usgs.gov/monitoring-location/05454500 Report shall not be considered complete without Exhibit 1 End of Report HGRIZGHTAL SLATE IN FEET o Fz 24 _ ... _.. IXTAWNo wv wvE aFH 1S]XI® rG. W. ABUT. 1 C.L. PIER 2 art .. ..> - .., vu 149' 149' BRIDGE DECK ELEV. 660.00 LOW STEEL ELEV. 657.50 CONIC. RUBBLE LOCATED UNDER EACH TRUSS SPUCE PL. OAM CREST ELEV, 648.5 TM. O 4 LOCATIONS. PROTRUDING R®AR CATCHING DEBRIS O STA 2+00. REPORTED BEDROCK --i-I_I-1--h1-1-1__ 'UYI71Tl -T �_i_T 7-i=- I.I-1-hI-1-1-TT-1__ NUMEROUS SURFACE GOUGES OBSERVED STA 00+75 ELEV t641.0 THROUGHOUT LENGTH OF DONNSTREAY VERT. SURFACE DAMAGE TO VERT. DAY FACE. STA 1+4p,l.l,i.I-I-�.-. INSPECTION TO LONER 8- Vd0 NEAR BASE OF VERT. DAN FACE. OF VERT. DOWNSTREAM WALL FACE. DAN FACE. TYP. DEPTH OF 4'-6' WITH E-W LENGTH: BASE:2' T(1P:4' NO PRESSURE DIFFERENTIAL OBSERVED. ISOLATED AREAS UP TO 1' DEEP. HEIGHT: 4' 2' DIA. X N' DEEP DEPTH: 1B' STA 3+00 Vd0 UNDER POURED CONIC. PIER ENCASEMENT REPORTED BEDROCK N. OF PIER 2 E-W LENGTH: 10' ELEV. ±641.0 O STA 3+08 MAX DEPTH BELOW SHEET PILE: 3' MAX DEPTH UNDER SHEET PILE: 4' REPORTED DIMENSIONS AND ELEVATIONS REFERENCED FROM 2003 DAM RENOVATION DRAWINGS. NO TOPOGRAPHIC INFORMATION WAS COLLECTED AS PART OF THIS INSPECTION. ELEVATION ELC* BRG CLERIC X0112ORAL SCALE M IRI f 1 1 PIER 2 0 1E 94 STA 1+40. STA 1+49: STA 2+94 2'X4' HOLE NEAR CREST OF OAM MITH PRESSURE (SUCTION . N+ - VOO UNDER %ER 1 FOOTING YOD AT BASE OFTIER 2 WALL�NEGATIVE HEIGHT: E:I' N:2' W4' N-S LENGTH:TRACING DYE POURED INTO HOLE. DEPTH UNDER FOOTING. E:1' N:>5' W:T MAX HEIGHT: 1E-W MAX DEPTH:]ZER PPROX. OMIT OF UPSTREAM DAN SPECTION. HELD BACK 3 3' FROM CREST OF GENERAL LOCATION OF UPSTREAM STREAMBED STA 3+10 AM FOR SAFETY. TYP. WATER DEPTH: 5' (2'-3' DEEPER NEAR PIER 1) TRADING DYE OUTLET. DYE TRACINGDY 1 OUT O. EMBANKMENT NEAR G 'F WATERLINE APPRO%. 40 MIN. AFTER tl DOWNSTREAM PERT. FACE CIF DAN CONCRETE OVER POUR OBSERVED APRON AT Y BASE OF WALL THROUGHOUT LENGTH OF DAN STA STA 2+2R $TA 2+60: FACE FACE: r VDID NEAR BASE OF VEHT. DAM FACE. VdD BETWEEN DAM FACE AND APRON SURFACE DAMAGE NEAR BASE 6 PERT. ROUGH POURED CONCRETE APRON YAM TYING, NO PRESSURE DIFFERENTIAL OBSERVED. E-W LENGTH: 2' / N-S WDTH: 6' / DEPTH: 2' DAM FACE: 2' DIA. X V DEEP. SURFACE AMPUTUDE +2'. SEVERAL 3'-5' 2' DIA. X >4' DEEP 1' DIA % 2' DEEP HOLE O CNTR ELEVATION CHANGES OBSERVED THROUGHOUT. C /77ENCOUNTERED. STA 1+64: STA 3+00 w GENERAL LOCATION OF DOWNSTREAM STA 6' DIA Hd-E IN APRON O REVETMENT UNE WITH VOID UNDER POURED CONIC. TIER ENCASEMENT STREAMBED. CONCRETE APRON COVERED W/ SPALLED CONCRETE W/ E%POSED RBN NEGATIVE PRESSURE (SUCTION). E-W LENGTH: 10' REVETMENT APPROX. 30FT DOWNSTREAM OF APRON APPROX 10' FROM VERT. OAM JE DIVER UNABLE TO LOCATE HOLE NEXT DAY TO MAX DEPTH BELOW SHEET TILE: 3' VERT. AM FACE. VERYAX S. ENO 6 APRON NOT E-W LENGTH: 1' / N-S WIDTH: 2' / DEPT PERFORM DYE TRACING. DEPTH UNDER SHEET PINE: {' PLAN VIEW ? ON -SITE ENGINEER NATHAN MILLER, P.E. DIVE COMPMY: GREAT LAKES GIVING ! SALVAGE /� igh. IOWA RIVER POKER COYPMY DAY/CORALVILIE MILLDAM B� 5�- � PR0.EOT NUMBER IOI14 STATE CITY YEAI! SN EET TAL EIETS INSPECTION DATE(S): MAY 11-13. 2021 DIVE SUPERVISOR TOM GODIN oS NATIONAL INVENTORY Id IA01275 IGWA CITY 2021 EaXI Marine Professionals Since 1919 BREINNAN REVISED UNDERWATER DIVE INSPECTION REPORT Prepared for: Barr !!BARR,--. Structure: Overflow Spillway Location: Iowa City, IA Inspection Date: November 8, 2024 Revision 1 Prepared . Company,J.F. Brennan 818 Bainbridge Street La Crosse, WI .09 • - .0: .784.7173 Great Place TO Work use f ..11 Underwater Inspection ReQort Table of Contents ExecutiveSummary ..................................................................................................................ii 1. Introduction/Background................................................................................................1 2. Method of Investigation..................................................................................................1 3. Inspection Findings........................................................................................................1 4. Evaluation and Summary ............................................................................................... 4 AppendixA — Photographs................................................................................................Al Appendix B — Station Referencing..................................................................................... B1 r Disclaimer: The information provided herein is for the limited administrative and operational use of Iowa City and their contractors. Other requests for this document shall be referred to J.F. Brennan Company, Inc. The accuracy of the information provided is limited by the conditions of the site during the day of the inspection. Iowa City - Overflow Spillway Page i Underwater Inspection Report Executive Summary Project: Underwater general condition assessment of the overflow spillway dam in Iowa City, Iowa. Scope of Work: Perform a visual and tactile dive inspection of the upstream and downstream portions of the overflow spillway dam. Additionally, a cursory inspection of the adjacent bridge piers to spillway dam interface will be performed. Inspection Team: Dive Supervisor: Sean McMullen Diver / Tender: Ryer Windschill Diver / Tender: Nick Will Inspection Date: November 8, 2024 Weather., Sunny, Hi: 62 °F Lo: 36 °F, 5 to 10 mph W winds. Water Visibility: Poor, 0 to 6-inches. Coordinates: 41 °40'27.18"N, 91 °33'S2.39"W Dive Mode: Surface Supplied Air, via Boat. Condition Assessment: Fair. Summary of Findings: Downstream: • A total of thirteen areas of joint spalling were present at the base of the vertical face along the overflow spillway. o Three of the areas of joint spalling also experienced exposed rebar (Stations 1+03, 1+51, & 1 +81). • Four areas of spalling were present on the vertical face. o Two of the areas of spalling also experienced exposed rebar (Stations 1+03 & 1+49). • A void was present beneath the Z-sheeting next to the wall of Pier 2 (Station 2+94). • An area of undermining was present near the east end of the apron (Station 3+00). Upstream: • A hole was present near the crest of the dam (Station 1+40). • An area of undermining was present on the footing of Pier 1 (Station 1+49). • An area of spalling was present at waterline on the wall of Pier 2 (Station 2+94). Iowa City - Overflow Spillway Page ii 1_ Underwater Inspection Report 1. Introduction/Background J.F. Brennan Company, Inc. (Brennan) performed an underwater inspection of the Overflow Spillway at Iowa City's facility in Iowa City, Iowa (See `Appendix A, Figure V). The inspection was performed as a visual and tactile dive inspection of the upstream and downstream portions of the overflow spillway dam. Additionally, a cursory inspection of the adjacent bridge piers to spillway dam interface will be performed. Environmental conditions, such as channel bed material, biological growth, and drift/debris, were also generally noted. Structure Data: Owner: Iowa City Structure: Overflow Spillway Location: Iowa City, Iowa Waterway: Iowa River 2. Method of Investigation A Level I visual and tactile inspection of the structure and surrounding riverbed was used to observe signs of distress and deterioration including, but not limited to, movement, cracks, delamination, scaling, spalling, exposed reinforcing steel, collision damage, scour, and joint spalling. The inspection was conducted using surface -supplied air with equipment including a Kirby Morgan dive helmet with full diver -to -surface communications; and a helmet -mounted Outland Video Camera / Light combo with a video recorder providing live streaming onto the boat. All dives were conducted in accordance with Brennan's Safe Diving Practices Manual as well as all pertinent ADCI, OSHA, and USCG regulations. Additionally, all dives adhered to the dive schedules and decompression tables outlined in the U.S. Navy Dive Manual, Rev. 7. All measurements referenced hereinafter were approximate and reflect the conditions on -site at the time of the inspection. The three (3) levels of underwater inspections are described as: Level I - A simple visual or tactile (by feel) inspection, without the extensive use of tools or measuring devices. It is usually employed to gain an overview of the structure and will precede or verify the need for a more detailed Level II or Level III inspection. Level II - A detailed inspection which involves physically cleaning or removing growth from portions of the structure. In this way, hidden damage may be detected and assessed for severity. This level is usually performed on at least a portion of a structure, supplementing a Level I. Level III - A highly detailed inspection of a structure which is warranted if extensive repair or replacement is being considered. This level requires extensive cleaning, detailed measurements, and testing techniques that may be either destructive or non-destructive in nature. 3. Inspection Findings `To view/download the footage from the inspection please follow the instructions below. The SharePoint site will remain active for 30 days, during this period please download the files if you want to keep them for your records. After the 30-day period, the site will be removed, and you will no longer be able to access the videos through the SharePoint link. Iowa City - Overflow Spillway (Click and follow link directly. Your email address must have been given access for you to open the folder. If you do not have access and need it, please reach;..out so we can get your email address added.) i CD f: r,ri y a y Iowa City - Overflow Spillway ry Page 1 �^ Underwater Ins ection Re ort Downstream, Overflow Spillway The inspection began on the west end of the spillway and moved east. See `Appendix B, Stationing 1-2' for station references. • Station 0+04: An area of joint spalling was present at the base of the vertical face near the west end of the spillway. o The spalling measured 18-inches wide by 6-inches tall by up to 14-inches deep. ■ The water depth at this location was 3-feet. • Station 0+06: An area of joint spalling was present at the base of the vertical face. o The spalling measured 5-feet wide by 6-inches tall by 8-inches deep. ■ The water depth at this location was 3-feet. • Station 0+61: An area of joint spalling was present at the base of the vertical face. o The spalling measured 12-inches wide by 6-inches tall by 6-inches deep. ■ The water depth at this location was 4-feet. • Station 1+03: An area of spalling with exposed rebar was present on the face of the spillway. o The spalling measured 18-inches wide by 4-feet tall by 20-inches deep. o The spalling appeared to be present along a construction joint. ■ The water depth at this location was 5-feet. o This location was noted in the 2021 inspection but was labeled as Station 0+75. ■ In 2021, the spalling measured as up to 2-feet wide by 4-feet tall by 20-inches deep. • Station 1+03: An area of joint spalling with exposed rebar was present at the base of the vertical face. o The spalling measured 18-inches wide by 5-inches tall by 12-inches deep. ■ The water depth at this location was 5-feet. • Station 1+29: An area of joint spalling was present at the base of the vertical face. o The spalling measured 6-inches wide by 2-inches tall by at least 8-inches deep. ■ The water depth at this location was 5-feet. • Station 1+49: An area of spalling with exposed rebar was present on the apron. o The spalling was approximately 10-feet downstream of the vertical dam face and measured 2-feet wide (east to west) by 18-inches long (north to south) by 8-inches deep. ■ The water depth at this location was 9-feet. o This location was noted in the 2021 inspection. ■ In 2021, the spalling measured 1-foot wide (east to west) by 2-feet long (north to south by 1-foot deep. • Station 1+51: An area of joint spalling with exposed rebar was present at the base of the vertical face just east of Pier 1. o The spalling measured 24-inches wide by 5-inches tall by 10-inches deep. ■ The water depth at this location was 9-feet. • Station 1+53: An area of joint spalling was present at the base of the vertical face. o The spalling measured 6-feet wide by 3-inches tall by 6-inches deep. ■ The water depth at this location was 9-feet. • Station 1+62: An area of joint spalling was present at the base of the vertical face. o The spalling measured 12-inches wide by 5-inches tall by 6-inches deep. ■ The water depth at this location was 9-feet. • Station 1+67: An area of joint spalling was present at the base of the vertical face. o The spalling measured 5-feet wide by 8-inches tall by 18-inches deep. ■ The water depth at this location was 9-feet. • Station 1+81: An area of joint spalling with exposed rebar was present at the base of the vertical face. o The spalling measured 5-feet wide by 18-inches tall by at least 3-feet deep. ■ The water depth at this location was 8-feet. • Station 2+20: An area of joint spalling was present at the base of the vertical face.- o The spalling measured 5-feet wide by 10-inches tall by at least 12-inches deep. ■ The water depth at this location was 7.5-feet. o This location was noted in the 2021 inspection. ■ In the 2021 report, the area was labeled as a void and measured 24et long (east to west) by 6-inches wide (north to south) by 2-feet deep. Iowa City - Overflow Spillway Page 2 Underwater Inspection Reuort • Station 2+26: An area of joint spalling was present at the base of the vertical face. o The spalling measured 3-feet wide by 6-inches tall by 18-inches deep. ■ The water depth at this location was 7.5-feet. • Station 2+30: An area of joint spalling was present at the base of the vertical face. o The spalling measured 3-feet wide by 18-inches tall by 18-inches deep. ■ The water depth at this location was 7.5-feet. • Station 2+88: An area of spalling was present on the vertical face of the dam. o The area of spalling was present 18-inches off bottom and measured 18-inches wide by 12- inches tall by at least 18-inches deep. ■ The water depth at this location was 8-feet. • Station 2+90: An area of spalling was present on the vertical face of the dam. o The area of spalling was 16-inches off bottom and measured 10-inches wide by 12-inches tall by 12-inches deep. ■ The water depth at this location was 8-feet. • Station 2+94: A void was present under the Z-sheeting along the wall of Pier 2. o The void measured 24-inches wide by 8-inches tall by at least 3-feet deep. ■ The water depth at this location was 8-feet. • Station 3+00: An area of undermining was present 5-feet from the east edge of the apron. o The undermining measured 10-feet wide by 4-inches tall by 18-inches deep. ■ The water depth at this location was 8-feet. • The diver was unable to locate the majority of the edge of the apron due to the amount of riprap that was present throughout. Upstream, Spillway The inspection began on the west end and moved to the east. See 'Appendix B, Stationing 3' for station references. Overall: Construction materials, such as concrete and rebar, were sporadically present throughout. Station 1+40: A hole was present near the crest of the dam. o The hole measured 2-inches long by 4-inches tall. ■ The water depth at this location was 4.5-feet. o This location was noted in the 2021 inspection. ■ In 2021, the hole also measured 2-inches long by 4-inches tall. Station 1+49: An area of undermining was present under the Pier 1 footing. o On the upstream face of the footing, the undermining measured 12-feet wide by 18-inches tall by at least 7.5-feet deep. o The diver was able to probe 3-feet deep on the west side of the footing and 5-feet deep on the east side of the footing. o The horizontal face of the footing extended 6-feet upstream of the Pier. o The vertical face of the footing was 2-feet tall. o Loose concrete was present throughout the area of undermining. ■ The water depth at this location was 6-feet. o This location was noted in the 2021 inspection. ■ In 2021, the area was labeled as a void and extended throughout the width of the footing. • The maximum height was 2-feet and was measured on the north end of the footing. • The maximum depth was at least 5-feet, which was also measured on the north end of the footing. Station 2+94: An area of spalling was present at waterline on the Wall of Pier 2 (See,.'Appendix A Figure 7'). - o The spalling measured 4-feet wide by 18-inches tall by 4-feet deep ■ The water depth at this location was 2-feet. o This location was noted in the 2021 inspection. ■ In 2021, the area was labeled as a void and measured 5-feet long (north to south) by 1.5-feet tall by 2-feet deep. ~, Iowa City - Overflow Spillway Page 3 Underwater Ins ection Re ort 4. Evaluation and Summary Based on the underwater inspection findings at the time of inspection, the Overflow Spillway was considered to be in fair condition. Limited minor to moderate defects or deterioration were observed, with localized areas of moderate to advanced deterioration present. Refer to 'Routine Underwater Condition Assessment Rating Descriptions' below for explanations of above noted condition rating(s). Iowa City - Overflow Spillway ra Page 4 Underwater Inspection Report Routine Underwater Condition Assessment Rating Descriptions ®: No visible or only minor damage was noted. Structural elements may have shown very minor deterioration, but no overstressing was observed. No repairs were recommended. ®: Limited minor to moderate defects or deterioration were observed, but no overstressing was observed. The "Brennan Repair Rating" was low. Fair: All primary structural elements were sound, but minor to moderate defects or deterioration were observed. Localized areas of moderate to advanced deterioration may have been present but did not significantly reduce the load -bearing capacity of the structure(s). The 'Brennan Repair Rating" was low to moderate. Poor: Advanced deterioration or overstressing was observed on widespread portions of the structure(s) but did not significantly reduce the load -bearing capacity of the structure(s). The "Brennan Repair Rating" was moderate. -: Advanced deterioration, overstressing or breakage, may have significantly affected the load -bearing capacity of primary structural components. Localized failures are possible and load bearing restrictions may be necessary. The 'Brennan Repair Rating" was moderate to major. -: Heavily advanced deterioration, overstressing or breakage, has resulted in localized failure(s) of primary structural components. More widespread failures are possible or likely to occur, and load restrictions should be implemented as necessary. The 'Brennan Repair Rating" was major. We appreciate the opportunity to work with Iowa City and Barr on this project. If you have any questions or concerns regarding the information in this report or if Brennan can be of any further assistance, please do not hesitate to contact me directly. Respectfully submitted, Justin Brendon Underwater Services — Assistant Dive Project Technician ce// 608.799.1978 jbrendon@jfbrennan.com N Iowa City - Overflow Spillway Page 5 ;- �l Underwater InsRection�Report Appendix A — Photographs List of Fiaures Figure1 —Area Map..................................................................................................................... A2 Figure 2 — Downstream, Overflow Spillway.................................................................................. A3 Figure 3 — Downstream, Overflow Spillway.................................................................................. A3 Figure 4 — Upstream, Overflow Spillway....................................................................................... A4 Figure 5 — Upstream, Overflow Spillway....................................................................................... A4 Figure 6 — Upstream, Overflow Spillway....................................................................................... A5 Figure 7 — Upstream, Overflow Spillway: Station 2+94, Area of Spalling...................................... A5 4 `D rrj Iowa City - Overflow Spillway Page Al Underwater Inspection Report Figure I — Area Map Iowa City - Overflow Spillway Page A2 Underwater Ins ection Re ort Figure 2 — Downstream, Overflow Spillway Figure 3 — Downstream, Overflow Spillway Iowa City - Overflow Spillway Page A3 f! Underwater Inspection Report Figure 4 — Upstream, Overflow Spillway 13 Figure 5 — Upstream, Overflow Spillway Iowa City - Overflow Spillway Page A4 Underwater Inspection Report Par Figure 6 — Upstream, Overflow Spillway Figure 7 — Upstream, Overflow Spillway., Station 2+94, Area of Spalfing---'� r Iowa City - Overflow Spillway Page A5 �l -� Underwater Inspection Report Appendix B — Station Referencing List of Station References Stationing 1 - Downstream, Overflow Spillway............................................................................. B2 Stationing 2 - Downstream, Overflow Spillway Continued............................................................ B3 Stationing 3 - Upstream, Overflow Spillway................................................................................. B4 Stationing 4 - Findings From 2021 Report................................................................................... B5 M. C' Lc. _ r10 Iowa City - Overflow Spillway Page B1 Underwater Inspection Report Stationing 1 — Downstream, Overflow Spillway 0+04 Joint S allin 18" 6" 14" At base of vertical face 0+06 Joint S allin 5' 6" 8" At base of vertical face 0+61 Joint S allin 12" 6" 6" At base of vertical face 1+03 S allin - Exposed Rebar 18" 4" 20" On vertical face 1+03 Joint Spalling - Exposed Rebar 18" 5" 12" At base of vertical face 1+29 Joint S allin 6" 2" 8" At base of vertical face 1+49 S allin - Exposed Rebar 2' 18" 8" On apron, 10-feet downstream of vertical face 1+51 Joint Spalling - Exposed Rebar 24" 5" 101, At base of vertical face 1+53 Joint S allin 6' 1 3" 1 6" 1 At base of vertical face 1+62 Joint S allin 12" 1 5" 1 6" 1 At base of vertical face Iowa City - Overflow Spillway Page B2 Underwater Inspection Report Stationing 2 — Downstream, Overflow Spillway Continued 1+67 Joint S allin 5' 8" 18" At base of vertical face 1+81 Joint Spalling - Exposed Rebar 5' 18" 3' At base of vertical face 2+20 Joint Spalling 5' 101, 12" At base of vertical face 2+26 Joint S allin 3' 6" 18" At base of vertical face 2+30 Joint S allin 3' 18" 18" At base of vertical face 2+88 S allin 18" 12" 18" On vertical face, 18-inches off bottom 2+90 Spalling 101, 12" 12" On vertical face, 16-inches off bottom 2+94 Void 24" 8" 3' Beneath Z-Sheetingnext to Pier 2 3+00 Undermining 10, 4" 18" Aron, 5-feet from the east edge Iowa City - Overflow Spillway Page B3 Underwater Inspection Report Stationing 3 — Upstream, Overflow Spillway 1+40 Hole 2" 4" N/A Near crest of dam 1+49 Undermining 12' 18" >7.5' Footing of Pier 1 2+94 S allin 4' 18" 4' At waterline, on the wall of Pier 2 Iowa City - Overflow Spillway Page B4 Underwater Inspection Report 0 '3 1. CL.P" 2 _70-1-NUN 30 PH 3: 1' 11W ORIDOE DECK EUV "0 00 LOW STEEL El[Y. I IVIA C F r Y, 10 ilAV P DAY CREST ELEY ""L, LOC, SPLACE P' 64&5 --Icc*c TYP, 4 LOCATHONS,AR — PROTAUDNG REBCATCHING DEBRIS 0 STA 2100 ........... .. . ... ... REPORTED BEDROCK GOUGES [LEY. t611 0 OBSERVED STA .75 THROUGHOUT THROUGHOUTT LENGTH OF DOWNSTREAM VERI. SURFADE DAMAOR TO KIT. DAM FACE] STA 1.40,.To Low 6, — AR NEBASE OF DAM FACE, OF VERT DOWNSTREAM, WALL FALL DAM FACE' T-OF . DEPTH 4-� 6' WE-W LENGTH: RASE: 2' TOP.{' No PRrSqAE WnRENMAL OBSERM. ISOLATED AREAS LV TO I' DEEP HEIGHT: 4' Z' DLL. A >4! DEEP OVYW ior STA 3.00 -4 "A 3,0, REPORTED BCOROCK N. OF — I E-VIE-CASEAR'"T CLE, STA 3.09 aZ: I' MAX DEPTH BELOW SHEET FIE: I WAX DEPTH UNDER SHEET PILL 4* REPORTED DH*NS$OkS AMC) EL VATIONS REFERENCED FROM 200 DAM RENOVATION DAAWdGS_ 40 TOPOGRAPHIC INFORMATION WAS COLLECTED AS PART OF MS OISPECTOY ELEVATION VT W41�INIWT 12 _11A —0., — NEAA —T DAM T,, STA 1+4& STA 2,% AT SASE VOID Low P" I HOOTING PER 2 WALL — MEEN 11-0- MECATIME PRESSURE (SUCT*04) NDWF. E- V WL2' We LENGTH: S' I— IWAOM DYE POURED INTO HOLE, 0" LRA" MAX HEIGHT: 15* E-W MAX DEPTH APPROX. LANI OF UPSTREAM DAM WSPE TOM DYER HELD 84CK A 3' FROM CREST OF MMERAL LOCAL" OF UPSTREAM STREAMBED STA 3.10 DAM FOR SAFETY. m WATER 0mvH,. S. (2-3- DCD-" NEAR PER 1) IMACINO On OUTLET On LEEO49D OUT OF AR — — — — — — — — — — — �GOWXMIEAM 11.1T FACE OF DAM CONCRETE OVER P" OBSERVED ON APRON AT .All OF WALL THROX.H.1 LENGTH OF DAM FACE STA HEAR BASE OF KIT. DAM j-'� STA 21- STA 2.ftVOD BETWEXXI DAM 'ACE AND APRON SURFACE DAMAGE W &.M OF JE_. INA� POURED CONCRETE APRON! WTH TIPICK O&SE K LENOTH,. 2' / N-S MOTH: V / TN, 2* DAM FACE. 2* DIA. X V AMPLITUDE 12' SEVEN. Y-S' DIA IXA X 2* DEEP HOLE WE ELESURFACE ­TX)N CHANCES OSSERYED —Mb ....... STA 1+64- STA 3.00 GENERAL LOCATION OF DOWNISTPEAM STA 1.49, 6' DIA HOLE IN APRON 0 REWTMENT LINE WTIII k'00 UNDER POUREDPIER ENCASEMENT cow ST*EAUK CONCRETE APRON COHERED W1 1POSED REEK. ON NEGATI WzSrW E-W LENGTH. TV R[W TWrNT APIFIR X, 3OFT DOW(SYRrAM APRON FROM KIT. DAM FACE. UNABLE LO=.T*N1 HCAJ NEXT DAY TO MAXMA DEPTH BELOW PM- S VENT I DAM FACE, S. END OF APRON NOTC-w LENGTH: 4: 2 / DEPTH. V ENCOUNTERED. PLAN PERFORM MACRXC MAX DEPTH UNDER SHEET PIE: 4V VIEW CN-STE ENGRIEM MA14M MILER, 01. DIVE COMPANY, GREAT LAKES [XVING, f SKVAQE ladft ow RIVERPOWER coMPAMY DAu/ccRAi.,XLLE 201u mou&aw INSPECTN)W OAT(Sk WAY 11-13. 2021 D1W 9JPERMSOO: VOM OCAM I kATX)kAL MANTORY NDIA01275 1 W Stationing 4 — Findings From 2021 Report Iowa City - Overflow Spillway Page B5 IOWA RIVER POWERHOUSE DAM REPAIR PROJECT LOCATION MAP /ti\ NOT TO SCALE �j REFERENCING LIMITS OF SECTION CUT SECTION IDENTIFIER SECTION REFERENCES 1 (SHEET SECTION IS w2 LOCATED ON) �- SECTION IDENTIFIER \ SECTION: SECTION TITLE co' SECTION REFERENCES (SHEET SECTION IS CALLED OUT) DETAIL IDENTIFIER 1 2 DETAIL REFERENCES (SHEET DETAIL IS LOCATED ON) DETAIL IDENTIFIER 1 DETAIL: DETAIL TITLE co. DETAIL REFERENCES (SHEET DETAIL IS CALLED OUT) PROJECT LOCATION (JOHNSON COUNTY) UTILITY CONTACTS. IMON Contact Name: Mellhew Kearney C-In Phone 319-261-4640 Contact Email: rnatthew.keameyQlmon.net MtlArneriwn Elecotc Contact Na—: Wim Murat' Contact Phone 319-341-4412 EmaI.. wirn.murrayQmidamen®n.com MUAR-wan Gas Cooled Name: Joseph Rotok Contact Phone: 319341.4457 C-I Email: Joseph.Retek@rrlleamerfran.com CITY OF IOWA CITY FIRE, BUSINESS: 319-356-5260 POLICE, BUSINESS 319-3565276 'CALL 911 FOR ALL EMERGENCIES PUBLIC WORKS/ENGINEERING: 319-356-5140 SEWER EMERGENCY CALL: 319-356-5177 WA ER EMERGENCY CALL: 319-356-5166 STREETS: 319-358.5181 TRAFFIC ENGINEERING: 319-3565192 ITS/FIBER: 319-35G5433 10WAM ONE CALLS. 1 (800) 292 - 8989 PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 NOTES: 1. COMPLY WITH ALL APPLICABLE LOCAL. STATE, AND FEDERAL CODES, PERMITS, AND REGULATIONS. 2. VERIFY ALL QUANTITIES, GRADES, AND DIMENSIONS 3. TOPOGRAPHIC INFORMATION BASED ON A COMBINATION OF LIDAR DERIVED DATA COLLECTED BY THE UNITED STATES GEOLOGICAL SURVEY IN 2019, AND BATHYMETRY COLLECTED BY' HE UNIVERSITY OF IOWA IN 2009. SURVEYS WERE PERFORMED WITH VERTICAL DATUM OF NAVDBB (FEET). 4. FIELD -LOCATE ALL SITE UTILITIES (PRIVATE AND PUBLIC) PRIOR TO STARTING THE WORK ALL UTILfT1ES SHOWN ON THE PLANS ARE MnROXIMATE. ANY UTILfT1EG DAMAGCD BY CONTRACTOR SHALL BE REPAIRED TO THE SATISFACTION OF UTILITY OWNER AT CONTRAC'OR'S COST. IOWA CITY, IOWA VICINITY MAP O NOT TO SCALE CITY OF IOWA CITY ENGINEERING DIVISION APPROVED /i4�� 3 o� CITY ENGINEER DATE IQZS Jtl 30 t° INDEX OF SEALS SHEET NO. NAME TYPE G-01 TOR HANSEN STRUCTURAL G-02 NOAH HOFRIC14TER CNR. n'urr I hereby certify that this engineering document was prepared by me or under my direct personal supervision and that I am a duly licensed Professi Engineer under the lows of the State .O of Iowa. � TOR $. �r HANSEN J i Data: 0625rz025 J 21913 : TOR HA SEN. P License No. P2 913 My !enewal dote is December 31, 2026 Pages or sheets covered by this seal: "rnnra+•`r 501 G05 Mu G07. CC! +txu C 07 ABBREVIATIONS AND SYMBOLS APPR(< APRR 1111ATE ASCE AMERI1 AN SOCE1YOL NIL ENGINEERS ASI1.1 : &IF. RI( AN SOOL tY FOR TESTING MID NATERIALS CCNC CONCRETE EL ELEVATION DIG CRA':11N0 ID INS OF DIAMETER �E a.x iN�=RT FI E'rnT-ON elA meoM GIIN NAJD '.IINII.IUS1 NORTH—ERIC- eERTI^_AL DATU-.I NGVD NATIONAL_ GEODETIC VERTICAL DATUM rvc. nC 1. i� rvur. dER IN n-11 11EV 1 Iu ae ue�wnn+eD DRAWING INDEX SHEET TITLE G-01 ..... COVER SHEET G-02 ..... QUANTITIES C-03 ..... REFERENCE NOTES G-04 ..... POLLUTION PREVENTION PLAN G-05 ..... HYDROLOGY AND HYDRAULICS C-06 ..... EXISTING CONDITIONS PLAN G-07 ..... PROJECT LAYOUT PLAN C-01 ..... SITE ACCESS AND STAGING PLAN C-02 ..... WATER CONTROL PLAN C-03 ..... DAM LAYOUT PLAN C-04 ..... DAM REPAIR LOCATIONS PLAN C-05 ..... DAM REPAIRS C-06 ..... DAM REPAIRS C-07 .... , DAM REPAIRS C-10 ..... TYPICAL SECTIONS C-11 ..... TRAIL REPAIR PLAN TC-01 ..... TRAFFIC CONTROL TC-02 ..... TRAFFIC CONTROL B- ISSUED FOR BIDDING AND CONSTRUCTION I-- PERMmiNG nrn AS SHOWN IOWA RIVER POWERHOUSE DAM REPAIR PROJECT r I rva. °e10 ov3o2021 15521009.00 aID CONSTRUCTION s,. 6]i]'. Origin °'°�" RLez CITY OF IOWA CITY IOWA CITY, IOWA CLIENT PROJECT No.RECDRO daeis" Credeo JKH2 IOWA CITY. IOWA COVER SHEET 0 LB AW TSH 06'252025 ISSUED FOR BIDDING AND CONSTRUCTION RELEASED A 13 C 0 1 2 3 800 5r _4491 DevgeC JAVl2 D'NG. NC. REV. No. NO. BY CHK. APP DATE REVISION DESCRIPTION TO/FOR DATE RELEASED Aowrwe TSH G-01 0 IOWA RIVER POWERHOUSE DAM REPAIR PROJECT REF. NO. ITEM CODE BID ITEM DESCRIPTION UNITS QUANTITIES ]DOT BID ITEMS 1 2102-0425070 SPECIAL BACKFILL TON 225 2 2123-7450020 SHOULDER FINISHING, EARTH STA 8 3 2507-6800000 MATERIAL FOR FILTER BLANKET TON 10 4 2519-3300700 FENCE, TEMPORARY LF 2540 5 2599-9999003 SPILLWAY VOID FILL CY 50 6 2599-9999005 INSPECTION HOLES EA 13 7 2599-9999010 PRE -CONSTRUCTION SURVEY LS 1 8 2599-9999010 WATER CONTROL LS 1 9 2599-9999010 LEFT ABUTMENT VOID REPAIR LS 1 10 2599-9999010 MUSSEL SURVEY LS 1 11 2599-9999014 SHALLOW CONCRETE REPAIR (DEPTHS: 0" TO 3") SF 15 12 2599-9999014 SHALLOW TO MODERATE CONCRETE REPAIR WITH REBAR (DEPTHS: 3" TO 20") SF 115 13 2599-9999022 UNDERMINING REPAIRS (PIER 1 & LEFT ABUTMENT) CIF 237 14 2602-0000212 FLOATING SILT CURTAIN (HANGING) LF 400 15 2602-0000222 FLOATING SILT CURTAIN (CONTAINMENT) LF 400 16 2602-0000230 CLEAN OUT OF FLOATING SILT CURTAIN (CONTAINMENT) LF 400 17 2602-0000240 MAINTENANCE OF FLOATING SILT CURTAIN LF 400 SUDAS BID ITEMS 2010-1-D-1 TOPSOIL, ON -SITE CY 140 F19 7030-A-2 REMOVAL OF SHARED USE PATH SY 500 7030-C SHARED USE PATH, HMA, 6 IN SY 500 21 8030-A TEMPORARY TRAFFIC CONTROL LS 1 22 9010-A-1 CONVENTIONAL SEEDING, SEEDING, FERTILIZING, AND MULCHING, TYPE 4 AC 0.2 23 9040-A-2 SWPPP MANAGEMENT LS 1 24 9040-F-1 WATTLE, PERIMETER AND SLOPE SEDIMENT CONTROL DEVICE, 9 IN DIA LF 2510 25 9040-F-2 WATTLE, REMOVAL LF 2510 26 9040-J RIP RAP, CLASS B TON 30 27 9040-0-1 TRACK OUT CONTROL SY 115 28 9040-Y EROSION CONTROL MOBILIZATION EA 3 29 11,020-A MOBILIZATION LS 1 STANDARD ROAD PLANS The following Standard Road Plans apply to construction work on this project. IDOT STANDARD ROAD PLANS Number Date Title EC-202 10-21-14 Floating Silt Curtain EW-401 10-20-15 Temporary Stream Crossing TC-1 10-15-19 Work Not Affecting Traffic (Two -Lane or Multi -Lane) TC-252 04-21-20 Routes Closed to Traffic SUDAS STANDARD SPECIFICATION FIGURES NUMBER EDITION TITLE 9040.105 2025 EDITION WATTLE 9040.120 2025 EDITION STABILIZED CONSTRUCTION EXIT BID ITEM TECHNICAL SPECIFICATIONS SHALL FOLLOW THE CORRESPONDING REQUIREMENTS OF EITHER THE IOWA DEPARTMENT OF TRANSPORTATION OR SUDAS SPECIFICATIONS AS CLASSIFIED IN THE LIST ON THIS SHEET. BID ITEMS REFERENCING IOWA DEPARTMENT OF TRANSPORTATION SHALL MEET THE REQUIREMENTS AND COVENANTS OF THE IOWA DEPARTMENT OF TRANSPORTATION "STANDARD SPECIFICATIONS FOR HIGHWAY AND BRIDGE CONSTRUCTION," SERIES 2023 WITH REVISIONS PUBLISHED AT THE TIME OF BIDDING! BID ITEM REFERENCING SUDAS SHALL FOLLOW THE SUDAS STANDARD SPECIFICATIONS AS NOTED WITHIN THE PROJECT MANUAL REQUIREMENTS. ""x VESSIO ? chi : NOAH m = HOFRICHTER = _ 24665 - I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT WAS PREPARED BY ME OR UNDER MY DIRECT PERSONAL SUPERVISION AND THAT I AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF IOWA FOR ORIGIN DESIGN CO. #ice, 1 6/12 NOAH HOFRICHTER DATE PE 24665 12/31/2025 LICENSE # RENEWAL DATE PAGES OR SHEETS COVERED BY THIS CERTIFICATION: G-02, G-03, G-04, C-10, C-11, TC-Ot, TC-02 C i]D , o a� s 0 z •- o z N Y 0 3 origindesign.com 800 556-4491 r.iant Dleme --- CITY OF IOWA CITY Project Name IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY Sheet Title QUANTITIES AND TABLES IOWA RIVER POWERHOUSE DAM REPAIR PROJECT DATA BELOW IS FOR INFORMATION ONLY AND DOES NOT CONSTITUTE A BASIS FOR EXTRA WORK ORDER REQUESTS REF. NO. DESCRIPTION TiD ITEM DESCRIPTION FOR USE UNDER TRAIL PAVING, AS APPROVED BY THE OWNER. ALLWORK NECESSARY TO EXCAVATE AND CORE OUT ANY OF THE EXISTING SUBGRADE THAT IS DEEMED UNSUITABLE BY THE OWNER TO ALLOW PLACEMENT OF THE SPECIAL BACKFILLSHALL 1 BE CONSIDERED INCIDENTALTO THIS ITEM. DISPOSAL OF ANY EXCAVATED UNSUITABLE MATERIAL SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. SPECIAL BACKFILL 2 BID ITEM IS INCLUDED FOR THE EFFORTS NECESSARY TO PUCE, COMPACT, AND FINISH TOPSOIL AT THE EDGE OF THE TRAIL, AS SHOWN ON THE TYPICAL SECTIONS. ASSUMES SALVAGED TOPSOIL CAN BE USED ADJACENT TO THE NEW TRAIL PAVEMENT, INCLUDES THE SPREADING THE SALVAGED TOPSOIL A MINIMUM OF V DEPTH. SHOULDER FINISHNG, EARTH 3 BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR FOR INSTALLING FILTER BLANKET MATERIAL ON THE DOWNSTREAM SIDE OF THE LEFT ABUTMENT. REFER TO DRAWINGS FOR ADDITIONAL REQUIREMENTS METHOD OF MEASUREMENT WILL BE BY THE TON (ROUNDED TO THE NEAREST TON) BASED ON LOAD TICKETS OF MATERIAL DELIVERED AND PLACED ON SITE. MATERIAL FOR FILTER BLANKET FURNISH AND INSTALL A SAFETY FENCE MEETING THE REQUIREMENTS OF ARTICLE 4188.03 A MINIMUM OF 4TTALL AT ANY HAZARDS. TO BE INSTALLED AROUND THE WORK AREA AND STAGING AREAS. LEAVE SAFETY FENCE IN PLACE UNTIL NO HAZARDS 4 ARE PRESENT. THE FENCING REMAINS THE PROPERTY OF THE CONTRACTOR. METHOD OF MEASUREMENT SHALL BE TOTAL LINEAR FEET AS INSTALLED AROUND THE WORK AREA AND MEASURED BY THE OWNER. MOVING THE FENCE TO ANEW LAYOUT AS REQUIRED FOR CONSTRUCTION OPERATIONS SHALL BE MEASURED WHEN REPOSITIONED PROVIDED IT WAS PART OF THE APPROVED TRAFFIC CONTROL PLAN. BASIS OF PAYMENT SHALL INCLUDE ALL LABOR, MATERIALS, AND EQUIPMENT FOR FENCE, TEMPORARY INSTALLATION, MAINTENANCE, AND REMOVAL OF THE FENCE, INCLUDING ANY SUPPORTS NECESSARY TO PREVENT THE FENCE FROM BLOWING OVER OR BEING KNOCKED OVER BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL SPILLWAY VOID FILL MATERIAL INCLUDES DELIVERY, PLACEMENT, QUALITY CONTROL TESTING AND ALL ASSOCIATED CLEANUP INCLUDING 5 DEVELOPMENT AND MAINTENANCE OF CONCRETE WASHOUT LOCATIONS. REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS. METHOD OF MEASUREMENT WILL BE BY THE CUBIC YARD (MEASURED TO SPILLWAY VOID FILL THE NEAREST CUBIC YARD) BASED ON REDI#IIX BATCH TICKETS OF MATERIAL DELIVERED AND PLACED WITHIN THE SPILLWAY. 6 BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO INSTALL INSPECTION HOLES. INCLUDES INSTALLATION, PROTECTION OF EXISTING REINFORCEMENT, PATCHING THE INSPECTION HOLE AND ASSOCIATED MECHANICAL ANCHORAGE REQUIRED REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS. METHOD OF MEASUREMENT WILL BE BY THE EACH BASED ON THE NUMBER OF INSPECTION HOLES INSTALLED, INSPECTION HOLES BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO COMPLETE PRE -CONSTRUCTION AND POST -CONSTRUCTION SURVEY OF FOSTER ROAD. INCLUDES DOCUMENTING WITH PHOTOGRAPHY OR VIDEO THE CONDITION OF 7 FOSTER ROAD PRIOR TO MOBILIZATION AND AFTER DE -MOBILIZATION. THE CONTRACTOR SHALL PROVIDE THE CITY A MEMO FOR DOCUMENTATION THAT SUMMARZES DEFECTS OBSERVED AT EACH EVENT. REFER TO DRAWINGS (INCLUDING SHEET C-01 SITE PRE -CONSTRUCTION SURVEY ACCESS AND STAGING PUN) FOR ADDITIONAL REQUIREMENTS. METHOD OF MEASUREMENT WILL BE BY THE LUMP SUM BASIS. BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL WATER CONTROL. INCLUDES DEVELOPMENT OF WATER CONTROL PUN, DESIGNING WATER CONTROL COMPONENTS, INSTALLING, 8 MAINTAINING, AND OPERATING THE SYSTEM THROUGHOUT CONSTRUCTION INCLUDING ANY COFFERDAMS, DIVERSION CHANNELS, PUMP SYSTEMS, SIPHONS, OR OTHER NECESSARY ITEMS FOR DEWATERING THE SITE TO FACILITATE CONSTRUCTION UNDER WATER CONTROL DRY CONDITIONS. METHOD OF MEASUREMENT WILL BE BY THE LUMP SUM BASIS. BASIS Of PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL, AND PERFORM LEFT ABUTMENT VOID REPAIR INCLUDES SURFACE PREPARATION, FORMWORK, MATERIAL PLACEMENT, CURING, QUALITY 9 CONTROL TESTING AND ALL ASSOCIATED CLEANUP INCLUDING DEVELOPMENT AND MAINTENANCE OF CONCRETE WASHOUT LOCATIONS. REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS. METHOD OF LEFT ABUTMENT VOID REPAIR MEASUREMENT WILL BE BY THE LUMP SUM BASIS. THE AMOUNT OF DISTURBANCE IN THE RIVER IS DEPENDENT ON THE PROPOSED CONTRACTOR WATER CONTROL PLAN TO BE SUBMITTED TO THE OWNER PER THE NOTES ON SHEET C-02. TO COMPLY WITH A CONDITION OF THE IOWA DNR PERMIT, CONTRACTOR SHALL COMPLETE COORDINATION WITH THE IOWA DNR TO DETERMINE IF THE PROPOSED OPERATIONS WILL IMPACT SUITABLE MUSSEL HABITAT AND THEREFORE REQUIRE A MUSSEL SURVEY. AFTER REVIEW OF THE WATER CONTROL PLAN BY THE OWNER, SUBMIT ANY DETAILS OF THE PROPOSED WORK THAT INCLUDES IN -WATER DISTURBANCE TO THE IOWA DNR AREA FISHERIES BIOLOGIST FOR THE DNRS REVIEW. INITIAL COORDINATION WITH THE IOWA DNR SHALL BE CONSIDERED INCIDENTAL TO MOBILIZATION. 10 IF REQUIRED BY DNR, COMPLETE A MUSSEL SURVEY AND REPORT WHICH SHALL BE SUBMITTED TO THE IOWA DNR PRIOR TO CONSTRUCTION. THE SURVEY SWILL BE CONDUCTED BY A QUALIFIED MALACOLOGIST A MAXIMUM OF 90 DAYS PRIOR TO MUSSEL SURVEY CONSTRUCTION UNLESS OTHERWISE APPROVED. THE CONTRACTOR SHALL CONSULT WITH THE IOWA DNR TWO WEEKS PRIOR TO THE MUSSEL SURVEY TO COORDINATE AVOIDANCE, MINIMIZATION, AND MITIGATION MEASURE REQUIREMENTS, AND SHALL ADHERE TO ALL SURVEY GUIDELINES REQUIRED BY THE IOWA DNR AND OTHER APPLICABLE AGENCIES. A REPORT SHALL BE PROVIDED TO THE OWNER AND IOWA DNR WITHIN 30 DAYS. METHOD Of MEASUREMENT AND BASIS OF PAYMENT SHALL BE BY THE LUMP SUM AND SHALL BE FULL COMPENSATION FOR ALL EFFORTS WORK, MATERIALS, EQUIPMENT, AND LABOR TO PERFORM MUSSEL SURVEY AND REPORTING. THIS ITEM WILL ONLY BE MEASURED IF THE IOWA DNR REQUESTS MUSSEL SURVEY BE COMPLETED. BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL, AND PERFORM SHALLOW CONCRETE REPAIR INCLUDES SURFACE PREPARATION, FORMWORK, MATERIAL PLACEMENT, CURING, QUAUTY 11 CONTROL TESTING AND ALL ASSOCIATED CLEANUP INCLUDING DEVELOPMENT AND MAINTENANCE OF CONCRETE WASHOUT LOCATIONS. REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS. METHOD OF SHALLOW CONCRETE REPAIR (DEPTHS: 0' TO T) MEASUREMENT WILL BE BY THE SQUARE FOOT (MEASURED TO THE NEAREST SQUARE FOOT) BASED ON ON -SITE MEASUREMENTS BY THE CONTRACTOR OF THE REPAIR AREA. BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL, AND PERFORM SHALLOW TO MODERATE CONCRETE REPAIR INCLUDES SURFACE PREPARATION, FORMWORK, MATERIAL PLACEMENT, CURING, 12 QUALITY CONTROL TESTING AND ALL ASSOCIATED CLEANUP INCLUDING DEVELOPMENT AND MAINTENANCE OF CONCRETE WASHOUT LOCATIONS. REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS SHALLOW TO MODERATE CONCRETE REPAIR WITH REBAR METHOD OF MEASUREMENT WILL BE BY THE SQUARE FOOT (MEASURED TO THE NEAREST SQUARE FOOT)BASED ON ON -SITE MEASUREMENTS BY THE CONTRACTOR OF THE REPAIR AREA. (DEPTHS:3'T020� BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR TO FURNISH AND INSTALL, AND PERFORM UNDERMINNING REPAIR INCLUDES, FORMWORK, MATERIAL PLACEMENT, QUALITY CONTROL TESTING AND ALLASSOCIATED 13 CLEANUP INCLUDING DEVELOPMENT AND MAINTENANCE OF CONCRETE WASHOUT LOCATIONS. REFER TO DRAWINGS AND SUPPLEMENTAL TECHNICAL SPECIFICATIONS FOR ADDITIONAL REQUIREMENTS. METHOD OF MEASUREMENT WILL BE BY THE CUBIC UNDERMINING REPAIRS (PIER 18 LEFT ABUTMENT) FEET (MEASURED TO THE NEAREST CUBIC FOOT) BASED ON REDI•M[X BATCH TICKETS OF MATERIAL DELIVERED AND PLACED. 14 SEE IOWA DOT DEVELOPMENTAL SPECIFICATIONS FOR FLOATING SILT CURTAIN DS-23011 FLOATING SILT CURTAIN (WINGING) 15 SEE IOWA DOT DEVELOPMENTAL SPECIFICATIONS FOR FLOATING SILT CURTAIN DS-23011 FLOATING SILT CURTAIN (CONTAINMENT) 16 SEE IOWA DOT DEVELOPMENTAL SPECIRCATIONS FOR FLOATING SILT CURTAIN DS•23MI CLEAN OUT OF FLOATING SILT CURTAIN CONTAINME 17 SEE IOWA DOT DEVELOPMENTAL SPECIFICATIONS FOR FLOATING SILT CURTAIN DS-23011 MAINTENANCE OF FLOATING SILT CURTAIN INCLUDES OTHER RESTORATION ALONG THE TRAIL BEYOND THE TRAIL SHOULDER WHERE CONSTRUCTION OPERATIONS DISTURBED THE TOPSOIL QUANTITY CALCULATED IS BASED ON A 61NCH THICKNESS AND THE AREA WHERE TOPSOIL IS TO BE PLACED 18 ALONG THE TRAIL (ASSUMING A WIDTH OF 3 ON EACH SIDE OF THE TRAIL) DISTURBED AREAS OUTSIDE OF THE TRAIL SHOULDER AND WITHIN THE AREAS ALLOWED AS CONSTRUCTION LIMITS SHALL BE RESTORED ADEQUATELY TO ALLOW SEEDING AND ARE TOPSOIL, ONSITE NOT INCLUDED IN THE PAY AREA FOR THIS ITEM, UNLESS OTHERWISE APPROVED BY THE OWNER. 19 FOR REMOVAL OF TRAIL PAVEMENT. CONTRACTOR IS RESPONSIBLE FOR PAVEMENT DISPOSAL OFFSITE SEE NOTES ON SHEET TC-01 REFERENCING THE REQUIREMENTS AROUND TIMING FOR REMOVAL OF TRAIL REMOVAL OF SHARED USE PATH 20 USE PG 58.28S BINDER. IF ENTIRE WIDTH FINISHED WIDTH IS NOT PLACED CONTINUOUSLY, ASPHALT SHALL BE PLACED SUCH THAT THE CENTER JOINT HAS NO SEPARATION. SHARED USE PATH, HMA, 61N 21 SEE SHEETS TG1 AND TC-2. THIS ITEM INCLUDES PROVIDING SAFETY CLOSURES TO PREVENT PEDESTRIAN ACCESS BASED ON STAGING. CLOSURES SHALL CONSISTING OF SAFETY FENCE AND A MWL CLOSED' SIGN ON A TYPE III BARRICADE FOR THE SPUR TRAILAND WHEN THE PRIMARY TRAIL USED FOR ACCESS IS CLOSED FOR REPAIRS. TEMPORARY TRAFFIC CONTROL 22 USE SUDAS TYPE 4 (URBAN TEMPORARY EROSION CONTROL MIXTURE) OWNER WILL PERFORM PERMANENT SEEDING. CONVENTIONAL SEEDING, SEEDING, FERTILIZING, AND MULCHING, TYPE 4 23 PER SODAS. REFER TO POLLUTION PREVENTION PLAN ON SHEET G-04. OWNER WILL FILE THE FINAL NOTICE OF DISCONTINUATION FOR THIS PROW. SWPPP MANAGEMENT 24 INSTALLAT LOCATIONS BASED ON CONTRACTOR OPERATIONS, AS NEEDED TO PREVENT SEDIMENT ALONG THE TRAIL OR ACCESS ROAD FROM ENTERING THE IOWA RIVER OR LEAVING THE SITE WATTLE, PERIMETER AND SLOPE SEDIMENT CONTROL DEVICE, 91N DIA 25 OWNER MAY ELECT TO REMOVE SOME DEVICES REMAINING AT THE COMPLETION OF THE PROJECT. WATTLE, REMOVAL 26 BASIS OF PAYMENT INCLUDES ALL WORK, MATERIALS, EQUIPMENT, TOOLS AND LABOR FOR INSTALLING REVETMENT, CLASS B MATERIAL ON THE DOWNSTREAM SIDE OF THE LEFT ABUTMENT, REFER TO DRAWINGS FOR ADDITIONAL REQUIREMENTS METHOD OF MEASUREMENT WILL BE BY THE TON (ROUNDED TO THE NEAREST TON) BASED ON LOAD TICKETS OF MATERIAL DELIVERED AND PLACED ON SITE. RIP RAP, CUSS B 27 ILOCATION BASED ON CONTRACTOR'S CONSTRUCTION OPERATIONS. LOCATION TO BE APPROVED BY THE OWNER. TRACT( OUT CONTROL 28 SEE IOWA CITY SUPPLEMENTAL SPECIFICATIONS FOR REQUIREMENTS FOR THIS ITEM, EROSION CONTROL MOBILIZATION THIS LUMP SUM PRICE SHALL BE PAYMENT IN FULL FOR THE COSTS OF ALL SUPERVISION, LABOR, MATERIALS, EQUIPMENT, PROFIT AND OVERHEAD, AND PERFORMING ALL OPERATIONS AS ARE NECESSARY FOR MOBILIZATION 8 DEMOBIUZATION, ALL COMPLETE AS SPECIFIED. THIS ITEM SHALL INCLUDE CONTRACTOR'S PREMIUM FOR PERFORMANCE AND PAYMENT BONDS AND ANY SPECIAL INSURANCE OBTAINED FOR THIS PROJECT; PROVIDING AND MAINTAINING CONTRACTOR'S FACILITIES; PROVIDING AND MAINTAINING LAYDOWN AND ACCESS AREAS; PROVIDING WORK AREA SECURITY AND SITE SAFETY; PROVIDING ALL ELECTRICAL, WATER, INTERNET. AND TELEPHONE SERVICES REQUIRED OR NEEDED BY CONTRACTOR TO PERFORM THE WORK; 29 EQUIPMENT MOBIUZATION AND DEMOBILIZATION; REMOVAL AND DISPOSAL OF CONSTRUCTION DEBRIS, REMOVAL OF CONSTRUCTION EQUIPMENT, REMOVAL OF CONSTRUCTION MATERIALS, AND REMOVAL OF TEMPORARY UTILITIES; SITE CLEANUP DURING MOBILIZATION THE EXECUTION OF THE WORK; PREPARING AND TRANSMITTING THE REQUIRED SUBMITTALS; INITIAL COORDINATION WITH IOWA DNR TO DETERMINE WHETHER A L1USS(1 SURVEY IS REQUIRED; OBTAINING ALL PERMITS REQUIRED OF CONTRACTOR IDENTIFYING AND LOCATING UTILITIES AS NECESSARY FOR THE WORK; AND ALL INCIDENTALS AND OTHER ITEMS NOT SPECIFICALLY PAID FOR BUT INCLUDED IN THE TOTAL SCOPE OF THE WORK. CONTRACTORS SWILL HAVE AN ACTIVE SUBSCRIPTION TO DOC EXPRESS FOR THE PURPOSE OF SUBMITTING SHOP DRAWINGS, CHANGE ORDERS AND PAY ESTIMATES. C y d 0 origindesign.com 800 556-4491 Client Name CITY OF IOWA CITY rrotecc rvame IOWA RIVER POWERHOUSE DAM REPAIR PROJECT -----yu— IOWA CITY o 0 O o U ya O N Z m V 0 `o V i LL 0 z mm z _ N z S fl m =p C40 C N LL W na M > ; m ,nazi 6 m .y m m f Eg Sao_,. Sheet Title REFERENCE NOTES G-03 F-SITE DESCRIPTION 1. THIS STORM WATER POLLUTION PREVENTION PLAN (SWPPP) IS FOR CONSTRUCTION ACTIVITIES ASSOCIATED WITH THE CONSTRUCTION OF THE IOWA RIVER POWERHOUSE DAM REPAIR PROJECT, INCLUDING DAM REPAIR ACTIVITIES, EXCAVATION AND GRADING, GRADING FOR TRAIL, AND PREPARATION FOR SEEDING, LOCATED IN SE 1/4, SEC. 5 & SW 1/4, SEC 4, T79N, R06W, JOHNSON COUNTY, IOWA 2. THIS SWPPP COVERS AN ESTIMATED 20 ACRES WITH AN ESTIMATED 2 ACRES BEING DISTURBED. 3. THE SWPPP IS LOCATED PRIMARILY IN THE FAYETTE (B) SOIL SERIES. THE ESTIMATED RUNOFF COEFFICIENT (C) FOR THE SITE AFTER COMPLETION WILL BE 0.28. 4. REFER TO THE PROJECT PLAN SHEETS FOR FOR SITE MAPS SHOWING CONTOURS THAT INDICATE DRAINAGE PATTERNS AS WELL AS THE LOCATION OF WATERWAYS AND SENSITIVE OR PROTECTED AREAS. TABULATIONS OF QUANTITIES AND REFERENCE NOTES IN THE PLANS PROVIDE DETAILS OF PROPOSED MAJOR STRUCTURAL AND NONSTRUCTURAL CONTROLS. 5. RUNOFF FROM THIS SITE WILL BE DISCHARGED TO THE IOWA RIVER. CONTROLS 1. PRIOR TO BEGINNING GRADING, EXCAVATION OR CLEARING AND GRUBBING OPERATIONS, WATTLES OR OTHER PERIMETER CONTROL SHALL BE PLACED ALONG THE PERIMETER OF ALL AREAS TO BE DISTURBED AT ANY LOCATION WHERE RUNOFF CAN MOVE OFFSITE. A FLOATING SILT CURTAIN SHOULD BE INSTALLED FOR IN -WATER DISTURBANCE BASED ON CONTRACTOR OPERATIONS. 2. VEGETATION IN AREAS NOT INCLUDED IN THE CONSTRUCTION AREA SHALL BE PRESERVED. 3. AS AREAS REACH THEIR FINAL GRADE, THE LOCATION OF EROSION CONTROLS MAY NEED TO BE CHANGED OR ADDITIONAL CONTROLS MAY NEED TO BE PLACED. 4. OFFSITE VEHICLE TRACKING OF SEDIMENTS SHALL BE MINIMIZED. ROADWAYS ADJACENT TO THE PROJECT SITE SHALL BE CLEANED OF SEDIMENT DAILY. 5. STABILIZATION PRACTICES, INCLUDING TEMPORARY OR PERMANENT SEEDING AND/OR MULCHING SHALL BE INITIATED IMMEDIATELY ON ALL DISTURBED AREAS IF CONSTRUCTION ACTIVITY WILL NOT RESUME IN THOSE AREAS WITHIN 14-DAYS. 6. CONTRACTOR DISPOSAL OF UNUSED CONSTRUCTION MATERIALS AND CONSTRUCTION MATERIAL WASTES SHALL COMPLY WITH APPLICABLE STATE AND LOCAL WASTE DISPOSAL, SANITARY SEWER OR SEPTIC SYSTEM REGULATIONS. 7. STOCKPILE AREAS WHICH REMAIN FOR MORE THAN 7 DAYS SHALL BE SEEDED, MULCHED AND ENCLOSED BY WATTLES OR SILT FENCE. 8. DUST CONTROL MEASURES SHALL BE EMPLOYED IF DUST IS CREATED AND THERE IS POTENTIAL FOR AIR AND/OR WATER POLLUTION FROM DUST TRANSPORTED BY WINDS. DUST CONTROL MEASURES SUCH AS SPRINKLING/IRRIGATION, MULCHING, OR OTHER APPROPRIATE MEASURES SHALL BE EMPLOYED AS NECESSARY. 9. THE CONTRACTOR SHALL PLACE ANY OTHER CONTROLS CONSISTENT WITH CURRENT BMP'S AS DEEMED NECESSARY TO CONTROL RUNOFF FROM EXPOSED SITES. 10. THE WORK WILL BE COMPLETED WITH THE ESTABLISHMENT OF PERMANENT PERENNIAL VEGETATION WITH A DENSITY OF 70% OR EQUIVALENT STABILIZATION MEASURES ON ALL DISTURBED AREAS. 11. CONTRACTOR MAY LOCATE A PORTABLE REST ROOM FACILITY ONSITE IN A LOCATION WHERE CONTACT WITH STORM WATER DISCHARGE IS MINIMIZED. WASTES SHALL BE COLLECTED AND DISPOSED OF IN COMPLIANCE WITH LOCAL AND STATE REGULATIONS. 12. CONCRETE RESIDUALS AND WASHOUT WASTE: WASTE SHALL NOT BE DISCHARGED TO A SURFACE WATER AND IS NOT ALLOWED ADVERSELY AFFECT A WATER OF THE STATE. DESIGNATE TEMPORARY CONCRETE WASHOUT FACILITIES FOR RINSING OUT CONCRETE TRUCKS. PROVIDE DIRECTIONS TO TRUCK DRIVERS OF WHERE CONCRETE WASHOUT FACILITIES ARE LOCATION. CARE SHOULD BE TAKEN TO ENSURE THESE FACILITIES DO NOT OVERFLOW DURING STORM EVENTS. MAINTENANCE 1. THE CONTRACTOR IS REQUIRED TO MAINTAIN ALL TEMPORARY EROSION CONTROL MEASURES IN PROPER WORKING ORDER, INCLUDING CLEANING, REPAIRING OR REPLACING THEM THROUGHOUT THE CONTRACT PERIOD. CLEANING OF SILT CONTROL DEVICES SHALL BEGIN WHEN THE FEATURES HAVE LOST 50% OF THEIR CAPACITY OR WHEN THE SEDIMENT LEVEL REACHES 1/3 OF THE BARRIER HEIGHT. INSPECTIONS 1. QUALIFIED PERSONNEL (PROVIDED BY THE CONTRACTOR) SHALL INSPECT DISTURBED AREAS OF THE CONSTRUCTION SITE THAT HAVE NOT BEEN STABILIZED WITH A PERENNIAL, VEGETATIVE COVER OF SUFFICIENT DENSITY TO PRECLUDE EROSION AT LEAST ONCE EVERY SEVEN CALENDAR DAYS. 2. DISTURBED AREAS AND AREAS USED FOR STORAGE OF MATERIALS SHALL BE INSPECTED FOR EVIDENCE OF POLLUTANTS ENTERING THE DRAINAGE SYSTEM. EROSION AND SEDIMENT CONTROL MEASURES SHALL BE OBSERVED TO ENSURE THAT THEY ARE OPERATING PROPERLY. LOCATIONS WHERE VEHICLES ENTER OR EXIT THE SITE SHALL BE INSPECTED FOR OFFSITE SEDIMENT TRACKING. DISCHARGE LOCATIONS SHALL BE INSPECTED TO ASCERTAIN WHETHER EROSION CONTROL MEASURES ARE EFFECTIVE IN PREVENTING SIGNIFICANT IMPACTS TO RECEIVING WATERS. 3. THE CONTRACTOR SHALL IMMEDIATELY BEGIN CORRECTIVE ACTION ON ALL DEFICIENCIES FOUND. 4. THIS INSPECTION MAY REQUIRE REVISIONS TO THE DESCRIPTION OF POTENTIAL POLLUTANT SOURCES AND POLLUTION PREVENTION MEASURES IDENTIFIED IN THE PLAN. THE CONTRACTOR SHALL IMPLEMENT ALL REVISIONS TO THE PLAN DEEMED NECESSARY AND COMPLETE SUCH CHANGES TO THE PLAN WITHIN 7 CALENDAR DAYS OF THE INSPECTION. 5. A WRITTEN REPORT SUMMARIZING THE SCOPE OF THE INSPECTION, THE NAMES AND QUALIFICATIONS OF THE INSPECTORS, THE DATE, AND THE OBSERVATIONS MADE AND ACTIONS TAKEN SHALL BE MADE AND RETAINED AS PART OF THE SWPPP. THE REPORT SHALL BE SIGNED IN ACCORDANCE WITH PART VI.G OF THE PERMIT. THE OWNER WILL PROVIDE THE CONTRACTOR WITH A LINK TO ACCESS THE OWNER'S PLATFORM FOR DOCUMENTING SWPPP REPORTS. CERTIFICATION 1. CONTRACTOR SHALL SIGN THE STANDARD CITY SWPPP "CONTRACTOR CERTIFICATION AGREEMENT" FORM AND SHALL HAVE ANY SUBCONTRACTORS SIGN THE CORRESPONDING SUBCONTRACTOR CERTIFICATION FORM AS CO-PERMITEES IN ACCORDANCE WITH THE REQUIREMENTS OF THE NPDES GENERAL PERMIT NO. 2 AND BE RETAINED AT THE CONSTRUCTION SITE FROM THE DATE CONSTRUCTION ACTIVITIES BEGIN TO THE DATE OF FINAL STABILIZATION. 2. ALL CONTRACTORS AND SUBCONTRACTORS WHOSE WORK IS A SOURCE OF POTENTIAL POLLUTION AS DEFINED IN THIS SWPPP MUST SIGN THE CERTIFICATION STATEMENT. SOIL COMPACTION/TOPSOIL PRESERVATION THE PERMITTEE(S) SHALL MINIMIZE SOIL COMPACTION AND, UNLESS INFEASIBLE, PRESERVE TOPSOIL. "INFEASIBLE" SHALL MEAN NOT TECHNOLOGICALLY POSSIBLE, OR NOT ECONOMICALLY PRACTICABLE AND ACHIEVABLE IN LIGHT OF THE BEST INDUSTRY PRACTICES. "UNLESS INFEASIBLE, PRESERVE TOPSOIL" SHALL MEAN THAT, UNLESS INFEASIBLE, TOPSOIL FROM ANY AREAS OF THE SITE WHERE THE SURFACE OF THE GROUND FOR THE PERMITTED CONSTRUCTION ACTIVITIES IS DISTURBED SHALL REMAIN WITHIN THE AREA COVERED BY THE APPLICABLE GENERAL PERMIT NO. 2 AUTHORIZATION. MINIMIZING SOIL COMPACTION IS NOT REQUIRED WHERE THE INTENDED FUNCTION OF A SPECIFIC AREA OF THE SITE DICTATES THAT IT BE COMPACTED. PRESERVING TOPSOIL IS NOT REQUIRED WHERE THE INTENDED FUNCTION OF A SPECIFIC AREA OF THE SITE DICTATES THAT TOPSOIL BE DISTURBED OR REMOVED. SEE PART V.D.2.A.(2).(C) OF THE PERMIT FOR COMPLETE REQUIREMENTS. KEEPING PLANS CURRENT THIS SWPPP WAS PREPARED PRIOR TO THE COMMENCEMENT OF SOIL DISTURBING ACTIVITIES. CONTRACTOR SHALL AMEND THE PLAN WHENEVER THERE IS A CHANGE IN DESIGN, CONSTRUCTION, OPERATION, OR MAINTENANCE, WHICH HAS A SIGNIFICANT EFFECT ON THE POTENTIAL FOR THE DISCHARGE OF POLLUTANTS TO THE WATERS OF THE UNITED STATES AND WHICH HAS NOT BEEN ADDRESSED IN THE PLAN OR IF THE SWPPP PROVES TO BE INEFFECTIVE. SEE PART IV.0 OF THE PERMIT FOR COMPLETE REQUIREMENTS REGARDING UPDATING OF THE SWPPP. GENERAL NOTES 1. ALL CONTRACTORSISUBCONTRACTORS SHALL CONDUCT THEIR OPERATIONS IN A MANNER THAT MINIMIZES EROSION AND PREVENTS SEDIMENT FROM LEAVING THE PROJECT SITE. THE PRIME CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLIANCE AND IMPLEMENTATION OF THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) FOR THEIR ENTIRE CONTRACT. THIS RESPONSIBILITY SHALL BE FURTHER SHARED WITH SUBCONTRACTORS WHOSE WORK IS A SOURCE OF POTENTIAL POLLUTION AS DEFINED IN THIS SWPPP. 2. A "NOTICE OF INTENT FOR NPDES COVERAGE UNDER GENERAL PERMIT NO. 2" WILL BE FILED WITH THE IOWA DEPARTMENT OF NATURAL RESOURCES BY THE ENGINEER. 3. NOTICE OF DISCONTINUATION WITHIN 30 DAYS AFTER FINAL STABILIZATION, THE OWNER SHALL SUBMIT A NOTICE OF DISCONTINUATION TO THE IOWA DEPARTMENT OF NATURAL RESOURCES. 4. NON -STORM WATER DISCHARGES NON -STORM DISCHARGES MAY OCCUR FROM SUBSURFACE DRAINS INCORPORATED INTO THE PROJECT. THESE DISCHARGES WILL BE CONTROLLED BY STABILIZED OUTLETS. 5. THE CONTRACTOR SHALL PROVIDE TO THE OWNER AND DOCUMENT WITHIN THE SWPPP A 24 HOUR CONTACT. SEQUENCE 1. INSTALL CONSTRUCTION ENTRANCE 2. PLACE PERIMETER AND DOWNSLOPE CONTROLS WHERE NECESSARY 3. PLACE FLOATING SILT CURTAIN WHERE APPROPRIATE FOR ANTICIPATED ACTIVITIES IN THE IOWA RIVER 4. PROCEED WITH GRADING AND EXCAVATION 5. COVER OR STABILIZE DISTURBED AREAS AS SOON AS POSSIBLE 6. SEED DISTURBED AREA AS SOON AS POSSIBLE ONCE IT IS BROUGHT TO FINAL GRADE 7. MAINTAIN ALL TEMPORARY PERIMETER CONTROLS UNTIL ALL UPSTREAM AREAS ARE FINALLY STABILIZED. to C h0 to O QJ � O H z • - O L O z Y o� O 3t origindesign.com 800 556-4491 -OD-- CITY OF IOWA CITY .,J­ ­­ IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY - r G m w Cl C LL P 0 &� w c y as m 0 tray a= ow' N m O E c Z 2 2 o r Sheet Title t POLLUTION Q CT)PREVENTION PLAN S D 3 GaaM�c ge" E Station10:05454500 5 Station Name: Iowa Rirer at 1o5,;a C ty IA Latitude. 41.6566332 Longitude:-91.54100171 Station Type G p aq nq Station, continuous recorc 4,SOMEONE 4WA.. I university Iowa City ... _ J. H.ghts I n .A 1 PLAN: GAGING STATION LOCATION NOTES: 1. FLOW TO THE IOWA RIVER POWERHOUSE DAM IS CONTROLLED UPSTREAM BY THE CORALVILLE DAM. COORDINATE WITH CORALVILLE OPERATIONS PROJECT MANAGER (DEE GOLDMAN - 319.338.3543) AND USACE ROCK ISLAND DISTRICT CHIEF WATER CONTROL SECTION (CHRIS TREFRY - 309.794.5849) BEFORE COMMENCING WORK. 2. DATA FROM USGS GAGE 054545M WAS USED TO ESTIMATE FLOWS. THE DATA ON THIS SHEET IS APPROXIMATE AND FOR INFORMATION ONLY. CONTRACTOR SHALL MAKE ITS OWN ANALYSIS TO EVALUATE IMPACT OF FLOWS DURING CONSTRUCTION. 3. FLOW DATA SHOWN IS BASED ON MONTHLY AVERAGES OVER THE LIFE OF THE GAGE. FLOW DATA IS PRESENTED FOR INFORMATION ONLY AND ACTUAL FLOWS AT THE OUTLET CAN VARY GREATLY FROM THE AVERAGE VALUES PRESENTED HERE. 4. DAILY AND DAILY MEAN DISCHARGES VALUES ARE FROM OBSERVED VALUES AT GAGE 05454500 FROM 1903 TO 2025. 5. VERTICAL DATUM: NAVD88. USGS GAGE 05454500 LOCATION IOWA CITY, IA PERIOD OF RECORD 122-YEARS CONTRIBUTING AREA (SQ MILE) 3,271 LATITUDE 410 39' 24.06" LONGITUDE 910 32' 27.6" FLOWEANT EMMAT® PEAK DISUiARGE(CFS) 2 YEARFLOOD EVENT 8,000 10 YEARFLOOD EVENT 11,000 25 YEAR FLOOD EVENT 11,700 100 YEAR FLOOD EVENT 28,900 500 YEARFLOOD EVENT 44,800 %21 TABLE: SUMMARY OF RELEVANT GAGING STATIONS /3'\ TABLE: SUMMARY OF ESTIMATED FLOW EVENTS klwj NOTES: 1. FLOOD FREQUENCY STATISTICS ARE FROM THE USACE -IOWA RIVER REGULATED FLOW FREQUENCE STUDY' COMPLETED IN OCTOBER 2009. THE STATISTICS REFLECT THE REGULATED DISCHARGE FROM THE CORALVILLE DAM UNDER THE REGULATION PLAN. CLIENT M1M25 — — — — Scale — Rmjed olfica: AS SHOWN PERMITTING —25 — BARR ENGINEERING CO. 09/30/2024 De,a BID — — 25 CONSTRUCTION 2s — p �.�/ y 4300 MARKETPOINTE DRIVE Dnm RLB2 �11 11 1 SUITE 200 c� REcoRD MINNEAPOLIS, MN 55435 JKH2 1252025 ISSUED FOR BIDDING AND CONSTRUCTION A B C 0 1 2 3 CaipOrab HeB°o"a't°fSi p 'aoo632-2 D-g— JAW2 RELEASED Mn_pob. MimeFpa Fex.(M)IIU-Ml DATE REVISION DESCRIPTION TO/FOR DATE RELEASED %' laoocaz-zzn y,,yD,arn Appi W TSH .som 4WW aspen L `_WU If ]men 15DW lllpm 5Fm -----------------------�-- 1 F N A N 1 1 A i O N O ......... Mn DNam' -_--. Main pclle7, �MNIDlINNp 4 GRAPH: DAILY DISCHARGES ixm i y ]OFm 3 twm :>om som .-vim:;-----^._----= -: p �.-':....�-.�.._.-.e.._........ _.._r.-». 1 F M A ......_.O4MN-11+4wd "-�641fl,.N+M�Nd—y4ty.yDOyw M14M,-NMY� -•__. oFIN�,.lYVM4—D/Flls-NgiNiYY %51 GRAPH: DAILY MEAN DISCHARGES .y rV 660 655 _ Cr) ,. 9650 N DAM CREST EL A48.09' w DA E w w w w w w w w 645 -% n 64 rn 635 10 1� 20 25 30 35 40 45 Disc harge(c f, 1000) —Ab.. Dam 41-1-0 aW,) --_'— Below Dam(Taikatw) — —Dam Crew ,HEC-PAS 6 GRAPH: STORAGE CAPACITY CURVE ISSUED FOR BIDDING AND CONSTRUCTION IOWA RIVER POWERHOUSE DAM REPAIR PROJECT BARR PROJECT No. IOWA CITY, IOWA 15521009.00 CITY OF IOWA CITY CLIENT PROJECT No. IOWA CITY, IOWA HYDROLOGY AND HYDRAULICS DWG. No. REV, No, G-05 0 I I r CRY OF CORALVILLE �r '`2'•it_� 't ut i CRY OF RALVI E CRY OF q LX WETLANDS (DO CORALVILLE NOT DISTURB) r� I I =I f OLD GOLD LLC g I/ i51 3 i EX PEDESTRIAN g 3 2 8 p Ig # I \ "' \ EAST LD UT OGOLD \ r LLC \= :; EX SPILLWAY WEST (RIGH-) ABUTMENT F\ 1 t 1 / LL g CITY OF t R Z ` IOWA CY ? \ \ \ EX W } �a IOWA RIVER POWkR CO. r•\ •'• RESTAURAN \•' # ' (CLOSED) /w 4 MIDAMERICAN ENERGY T COMPANY fell,it PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 /r! IOWA CITY WATER DEPARTMENT PUMP HOUSE APPROX SHCRELINE / t' CITY OF IOWACITY EX GRAVEL PATH, CLEAR r. .VEGETATION AS NECESSARY qp EX CONaiETE PAVED SPILLWAY _ `\� ♦ \�s ' \ I r _ r - - BRIDGE r / `- _ ___ \ / • ' ` r\\ m\f\} �O \ ' is r i • '_ `�. �. / / `` r \ �\\' \\ � _ L CITY OF (LEFT) 8 . .�•IOWA CITY MENT ' i EX IOWA RIVER TRAP_ - 1 i i �e f ! • '..• 1 \ - EX WETLANDS (DO g e NOT DISTURB) � g I � \ r\ FISHING PIER •� \ •` '\ CITY OF / ; — . _ = • _ — — IOWACITY EX ASPHALT IOWA •-..�{ -_- _ •' \ • ' - g RIVER TRAIL `•!r> I THORN BERRY DOG PARK � g > I \ �IPROPERTY BOUNDARY (TYP) j ° r 1 PLAN: EXISTING CONDITIONS O 0 80 160 11 11 SCALE IN FEET LEGEND CONSTRUCTION LIMITS — — PROPERTY LINE --- EXISTING MAJOR CONTOUR -- — - EXISTING MINOR CONTOUR — - - - EXISTING SHORELINE EXISTING OVERHEAD ELECTRIC —•—•—•— EXISTING WATER LINE • — • — ° EXISTING UNDERGROUND ELECTRIC EXISTING CONCRETE PAVEMENT 0 EXISTING ASPHALT PAVEMENT EXISTING DELINEATED WETLAND NOTES: 1. PROPERTY BOUNDARIES ARE APPROXIMATE AND BASED ON JOHNSON COUNTY, IA PARCEL BROWSER. 2. UTILIITES ARE APPROXIMATE AND BASED ON MAPS AND GIS DATA FIELD LOCATION IS REQUIRED FOR ANY EXCAVATION. C_Aa ISSUED FOR BIDDING AND CONSTRUCTION PERM1rnN0 — y11zs 15 _ P1q•M Orr— BARRENGINEERING CO. BARR 4300 MARKETPOINTE DRIVE SUITE 200 — MINNEAPOLIS, MN 55435 0vrpora1e Hea°°°'^B1S- PN: 1.eoo63z-an P Whh-A.. �-- Fu:(9s21 eaz-zeol Ph: 1dODd1�-N77 „- (%2 PPm -- AS SHOWN osrJoizoza CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. 15521009.00 BID CONSTRUCTION 15 D— AWT EXISTING CONDITIONS PLAN CLIENT PROJECT No. G°BLkBtl Delon JKH2 RECORD — — — — — — — 0 LB AW TSH ON25l2025 ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TO/FOR A B C 0 1 2 3 JAW2 DWG. No. G-OB REV. No. () NO. BY CHK. APP. DATE REVISION DESCRIPTION DATE RELEASED APPh—I TSH i XN" 'ER POWER CG t�STAUgRNT{CLc:seuT 1 i FWA LEGEND CONSTRUCTIONUMMS PROPERTY LINE _..._... _..._..._ EXISTING SHORELNE • — • — — EXISTING OVERHEAD ELECTRIC EXISTING WATER LINE :.:!'��:•:;;� EXISTING CONCRETE PAVEMENT �f NOTES: 1. LIMIT GROUND DISTURBANCE TO CONSTRUCTION LIMITS. 2 CONSTRUCTION LIMITS ARE APPROXIMATE AND SHALL BE APPROVED BY CITY PRIOR TO ANY GROUND DISTURBANCE. 3. CONTRACTOR IS RESPONSIBLE FOR PROTECTION OF ALL EXISTING STRUCTURES, UTILITIES, AND SITE FEATURES. CONTRACTOR SHALL REPAIR STRUCTURES. UTILITIES. AND SITE FEATURES DAMAGED DURING THE COURSE OF THEIR WORK AT NO ADDITIONAL COST TO PROJECT, 4. MAINTAIN PUBLIC ACCESS TO PEDESTRIAN BRIDGE THROUGHOUT CONSTRUCTION. TEMPORARY CLOSURES OF BRIDGE REQUIRE APPROVAL BY CITY, 5 PEDESTRIAN BRIDGE SHALL NOT BE USED FOR CONSTRUCTION RELATED ACTIVITIES. 6 THE WORK IS LIMITED TO THE REHABILITATION OF EXISTING INFRASTRUCTURE. ALL ITEMS NOTED FOR CONTRACTOR ACCESS ARE TEMPORARY AND SHALL BE REMOVED IN THEIR ENTIRETY WHEN WORK IS COMPLETE 7. THE CONTRACTOR SHALL REMOVE ALL TEMPORARY MATERIALS FROM THE SITE AT THE CITY'S DIRECTIONS IF FLOODING CONDITIONS ARE FORECASTED. THESE CONDITIONS ARE TYPICALLY FORECASTED WELL IN ADVANCE DUE TO THE PRESENCE OF THE CORALVILLE DMA UPSTREAM OF THIS PROJECT WHICH FOLLOWS OPERATIONAL PROCEDURES GOVERNED BY THE ARMY CORP OF ENGINEERS. 1 PLAN: PROJECT LAYOUT Q 0 30 60 1 1 F I 1 ISSUED FOR BODING PROJECT DATUM: SCALE IN FEET AND CONSTRUCTION HORIZONTALSTATE PLANE (IVA67), sourH. US FT VERTICAL NAV088 — —A85HOVM ENcINEeRJNG u> 4300 MARKETPOINTE DRNE 200 55LM P "� +, anelzmn R' `��%-un ...wnmm CITY OF IOWA CITY CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA-9UR'E BARR PROJECT ► o. 15521009.00 — __ Ip25rad24 ter. li ___ —MINNEAPOLIS.MN JKH?IOWA PROJECT LAYOUT PLAN o B w TSR n7eas ISS I A B C 0 1 2 3 a"+r^ yW2 No Ci-O% No- 0 NO. 8V hNC AJ'P. WTE REVISION DESCRIPTION DATE RELEASED °j/10'�' TSH a 0 0 I / 1 EXWETLANDS • (DO NOT DISTL i ■ i \ I / \ L' S I 00, \ •\ I v I �\ I \, •1 p APPROX SHORF_IV-� '\ F LEGEND — PROP LINE ----- -- - ISTING SHORELINE — u — EXISTING OVERHEAD ELECTRIC" —.—w—w— EXISTING WpA{TERLINEcl NOTES: 1. LIMIT GROUND DISTURBANCE TO CONSTRUCTION LIMITS. 2. CONSTRUCTION LIMITS ARE APPROXIMATE AND SHALL BE APPROVED BY CITY PRIOR TO ANY GROUND DISTURBANCE. 3. CONTRACTOR IS RESPONSIBLE FOR PROTECTION OF ALL EXISTING STRUCTURES, UTILITIES, AND SITE FEATURES. CONTRACTOR SHALL REPAIR STRUCTURES, UTILITIES, AND SITE FEATURES DAMAGED DURING THE COURSE OF THEIR WORK AT NO ADDITIONAL COST TO PROJECT. 4. MAINTAIN PUBLIC ACCESS TO PEDESTRIAN BRIDGE THROUGHOUT CONSTRUCTION. TEMPORARY CLOSURES IDGE REQUIRE APPROVAL BY CITY. 5. PEDESTR BRIDGE SHALL NOT BE USED FOR CONSTRUCT RELATED ACTIVITIES. PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 %11 PLAN: PROJECT LAYOUT N 0 30 80 111 I SCALE IN FEET ISSUED FOR BIDDING AND CONSTRUCTION CLIENT 2/1M25 - - - P 'd Omx. gARR ENGINEERING CO. BARR 4300 MARKETPOINTE DRIVEDa.,, SUITE 200 — MINNEAPOLIS, MN 55435 --Pas. IAm" s � RR laooui2-22n F_ IB52, e�2-2W1 RI'. 1�ro-632-22n , .w pY1, s�. AS SHOWN CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. 15521009.00 RERn11TnND — ya2s — — 25 — — — Dale 10/25/2024 RID AWT CLIENT PROJECT No. CONSTRUCTION — — 25 RECORD — A — B — C — 0 — 1 — 2 — 3 cI, iw Desgro JKH2 PROJECT LAYOUT PLAN 0 LB AW TSH 061252025 ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TOffOR NO. BY DHK. APP. DATE REVISION DESCRIPTION DATE RELEASED JAVY2 DWG. No. G-07 REV. No. 0 A ­1 TSH ilk / Aaaaox sHCRF wr i •' L / L/ aEXWETLANF—,TDISTJRBi AR _ EX OVERHEAD ELECTRIC A�CESS POIN" Ii C 1= I 1 I i TF MPORARV ROAD \ / rBvcoNTRncTO�� /I ACCESS POINT 2 EX WETLANDS NOT DISTURB)POINE IOWA RIVE)2', DAM RFP%IRPRCJFCTiR CO' RESTAURANT (CLOSED) '•\ ^ •\ 6' TI IORNBERRY DOG PAF< f. H:1 E i. , ,. SPEED HUMPS C/ < .F LEGEND I CONSTRUCTION LIMITS PROPERTY LINE V - — — — - EXISTING SHORELINE EXISTING OVERHEAD ELECTRIC LINE EXISTI%%N��G�� V ��WATER EXISTIN6QOW�rt E PAVEMENT EXISTING' JASPRAL1r PA��T A! C1 ACCESS ROUTE ` (f 3. `} V' IOWA RIVER TRAIL ACCESS ROUTE J ® TEMPORARY STAGQ4G,AREA V NOTES: 1. CONTRACTOR IS RESPONSIBLE FOR MAINTENANCE AND CLEANING OF ANY ROADS USED DURING CONSTRUCTION AND REPAIRING DAMAGE TO ANY ROADS DAMAGED DURING • - �. - CONSTRUCTION. 2. CONTRACTOR IS REQUIRED TO CONDUCT A PRE -CONSTRUCTION SURVEY OF FOSTER ROAD (SOUTH OF WHITE OAK PL), THE IOWA RIVER TRAIL, AND THE PEDESTRIAN BRIDGE OVER THE DAM PRIOR TO CONSTRUCTION. 3. CONTROL PUBLIC ACCESS TO WORK AREAS AS NEEDED WITH SIGNAGE AND CONSTRUCTION FENCING. 4. CONTRACTOR TO DETERMINE ALL STAGING AND LAYDOWN AREAS PRIOR TO DELIVERY OF MATERIALS AND EQUIPMENT TO THE SITE. 5. SEDIMENT AND AQUATIC VEGETATION TO BE REMOVED AND DISPOSED OF OFF SITE BY CONTRACTOR. 6. ACCESS POINTS SHOWN ARE FOR CONTRACTOR CONSIDERATION. POTENTIAL OPTIONS FOR CONTRACTOR ACCESS INCLUDE: A. ACCESS POINT 1 (CONCRETE PAVED SPILLWAY). A.1. REMOVE VEGETATION AS REQUIRED FOR ACCESS. A.2. PLACEMENT OF TEMPORARY FILL MAY BE REQUIRED TO FLATTEN ACCESS ROAD. B. ACCESS POINT 2 (LEFT ABUTMENT SHORELINE) B.1. REQUIRES TEMPORARY ACCESS ROAD CONSTRUCTION BELOW PEDESTRIAN BRIDGE. B.2. REMOVE ANY FILL PLACED FOR TEMPORARY ACCESS AFTER REPAIRS ARE COMPLETE. 7. IOWA RIVER POWER CO. RESTAURANT PARKING LOT CANNOT BE USED WITHOUT PERMISSION BY OWNER. PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 2 PLAN: SITE ACCESS AND STAGING O 0 150 300 SCALE IN FEET ISSUED FOR BIDDING AND CONSTRUCTION CLIENT NY-5 — — — — — Project 0lfce. BARR ENGINEERING CO. BARR 4300 MARKETPOINTE DRIVE SUITE 200 MINNEAPOLIS. MN 55435 c a�sema�"ftl P" 2-� Pu 1aaT ztw PR taaoea -22n , ;w,ncae Ste° ASSHOWN CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. 15521009.00 PERMITTING — 11121 — — 25 — — —_ D.. 1025/2024 BID CONSTRUCTION 2s — Dram AWT SITE ACCESS AND STAGING PLAN CLIENT PROJECT No. C°eCkBtl D JKH2 RECORD 0 1 2 3 0 LB AW TSHO6125l2025ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TO/FOR A B C ,-d JAW2 DWG. No. C_01 REV, No. 0 NO. BY CHK. APP. DATE REVISION DESCRIPTION DATE RELEASED ^eoT°� TSH APPROX a` \ . \ 101 1 s ` 4000 4 _..-• '� �O EAST (LEFT) ABUTMENT a ... • P em \ 1 ♦ �_ . , .,.o _ j a ♦' UPSTREAM DIVERSION ♦ '... _ ♦ COFFERDAM(BY .y+�� �••, CONTRACTOR) + � ( ' WATER DEPTH (SEE NOTES) ♦ i ♦♦ /- '♦ •` �\� ! ♦' q APPROXIMATE DOWNSTREAM LIMITS ♦♦ \ ♦ F,p +s�'BS OF COFFERDAM BY CONTRACTOR ' EX SPILLWAY ♦♦ •• } WEST (RIGHT, ABUI MEN O AAL A .A- wl 91600 ' LEGEND CONSTRUCTION LIMITS — — •+ — •� — PROPERTY LINE - — - - - EXISTING SHORELINE EXISTING OVERHEAD ELECTRIC EXISTING WATER LINE ,1STING CONCRETE PAVEMENT ® P OP646$RIPRAP Jo �.. GENERAL NOTES: 1. CONTRACTOR SHALL SUBMIT A WATER CONTROL PLAN TO BE REVIEWED BY THE ENGINEER PRIOR TO CONSTRUCTION AND SHALL MODIFY THE BASE CASE WATER CONTROL PLAN AS CONTRACTOR DEEMS NECESSARY. THE BASE CASE PLAN IS INTENDED TO DEMONSTRATE AN ACCEPTABLE APPROACH TO MANAGE THE WATER. 2. THE COFFERDAM LIMITS SHOWN HERE IS THE BASE CASE FOR THE CONTROL OF WATER. ALL DETAILS, MODIFICATIONS, ADDITIONS, AND DELETIONS TO THIS PLAN SHOULD BE ADDRESSED IN THE CONTRACTOR'S WATER CONTROL PLAN. 3. CONTRACTOR'S COFFERDAMS SHALL NOT CONTAIN LOOSE FILL IN DIRECT CONTACT WITH FLOW. ACCEPTABLE COFFERDAM PRODUCTS INCLUDE EARTH FILL WITH EROSION PROTECTION, SAND BAGS, PORTADAM, WATER INFLATED DAMS, JERSEY BARRIERS, OR SHEET PILE. 4. SEE DRAWING G-O6 FOR HYDROLOGIC CONDITIONS. 5. TOP OF COFFERDAM ELEVATION SHALL BE SELECTED BY CONTRACTOR USING INFORMATION PROVIDED ON DRAWING G-06. 6. CONTROL OF WATER DURING CONSTRUCTION IS RESPONSIBILITY OF THE CONTRACTOR. 7. APPROXIMATE WATER DEPTHS PROVIDED BY J.F. BRENNAN DURING 2024 DIVE INSPECTION. 8. CONTRACT DOCUMENTS REQUIRE ALL REPAIRS BE PERFORMED IN DRY CONDITIONS. PERFORMING DOWNSTREAM REPAIRS IN WET CONDITIONS MAY BE ACCEPTED BY OWNER IF THE FOLLOWING CRITERIA ARE MET: A. CONTRACTOR PROVIDES QUALIFICATIONS SHOWING EXPERIENCE PERFORMING DAM CONCRETE REPAIRS IN WET CONDITIONS. B. CONTRACTOR PROVIDES A DETAILED WORK PLAN FOR REPAIRS PERFORMED IN WET CONDITIONS THAT IS ACCEPTED BY CITY AND ENGINEER. C. WORK PLAN SHALL INCLUDE MEANS AND METHODS FOR PLACING CONCRETE OVERLAYS UNDERWATER OR USING PRE -PLACED AGGREGATE CONCRETE FOR THICKER REPAIRS. PLAN SHALL ALSO INCLUDE MEANS AND METHODS AND PROPOSED MATERIALS FOR SHALLOW CONCRETE REPAIRS. D. FINAL VISUAL INSPECTION OF ANY REPAIRS PERFORMED UNDERWATER SHALL BE SUPPLIED BY CONTRACTOR USING DIVERS WITH VIDEO DOCUMENTATION OF COMPLETED REPAIRS AFTER FORMS ARE REMOVED. CITY SHALL ACCEPT REPAIRS AFTER REVIEWING THE VIDEO INSPECTION OR DETERMINE IF ADDITIONAL REPAIRS ARE REQUIRED. ADDITIONAL REPAIRS (IF ANY) WILL BE THE RESPONSIBILITY OF THE CONTRACTOR. 1 PLAN: WATER CONTROL O 0 20 40 " ISSUED FOR BIDDING PROJECT DATUM: SCALE IN FEET AND CONSTRUCTION HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 CLI�T '+ — — — Pmpa 0m : BARR ENGINEERING CO. BARD 43M MARKETPOINTE DRIVE (� SUITE 200 MINNEAP55435 c wN.wwae„.: OLIS, MN Mn s. Mniaeala M 1400 s- M:141004024 M F°`' I ' � F . (962.mm sck AS SHOWN CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. 15521009.00 mMrr NG — vn — — — _ — — Da1A D— 10/25=24 IND CONSTRUCTION AWT WATER CONTROL PLAN CLIENT PROJECT No. Ch.*W JKH2 RECORD — p` — B — C 0 1 2 3 0 LB TSH 062512025ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TOWOR Desle�ee JAW2 DWG. No. C-02 REV. No. 0 NO. BY CH Ate. DATE REVISION DESCRIPTION DATE RELEASED Aoww� TSH /—I 1 PLAN: APPROACH CHANNEL (LOOKING SOUTHEAST) . s1� t 21 PLAN: SPILLWAY CREST (LOOKING SOUTHWEST) 3 PLAN: DOWNSTREAM CHANNEL LOOKING NORTHEAST c c..r+ M my"`♦�ia�. Y `. /-41 PLAN: WEST (RIGHT) ABUTMENT (LOOKING WEST/SOUTHWEST) /51 PLAN' EAST (LEFT) ABUTMENT (LOOKING EAST/SOUTHEAST) 6 PLAN: PEDESTRIAN BRIDGE LOOKING EAST/NORTHEAST ISSUED FOR BIDDING AND CONSTRUCTION cueRr aERuirnRc viazs — — — — — — —D.. P,ojeu D��e stele AS SHOWN IOWA RIVER POWERHOUSE DAM REPAIR PROJECTBARR BARR PROJECT No. ENGINEERING CO. 09/30/202415521009.00 e _ 4300 DRNE o...n RLB2 CITY OF IOWA CITY IOWA CITY, IOWAcoRsrRucnoR gA SUITE 2RKE7POINTE SUITE 200 CLIENT PROJECT No. RECORD- mi 3 co.—HeaOQoa'te,5-. MINNEAPOLIS, MN 55435 D—g—J JKH2 IOWA CITY, IOWA DAM LAYOUT C LB AW TSH D6l25/2025 ISSUED FOR BIDDING AND CONSTRUCTION NO. BV CHK APP. DATE REVISION DESCRIPTION RELEASED TO/FOR DATE RELEASED rti��eaowe.Atimesaa P^ t-eoo-s3z-zzn PI, 1400e322M rss.11�.zeoi F. (95 )8M Ao-vex JAW2 TSH PHOTOS DWG. No. C_03 REV. No. 0 )� APPROX SHORELINE 1 ABUTMENT WALL UPSTREAM STREAMBED (APPROX) IY 3 O PIER 1 UNDERMINING REPAIR, APPROX SHORELINE ABUTMENT WALL 1 BRIDGE PIER 2 \ EAST(LEFT) ABUTMENT IH: STA 1- 5 6 IH: STA 2-10 IH: STA 1+87 ❑ ❑ Or70 IH: STA 0+30 IH: STA 0r60 ❑ ❑ IH: STA 0*90 IH: STA 1+20 IH: STA 1+40 ❑IH: STA 1+55 _ IH: STA 1 r80 ❑❑A _ ��TRIM REPAR AND IH: STA 2+40 IH: STA 2-70 TS DAM CREST EL. 648.5' OBSERVED SUCTION LOCATION 1 5 _ BRIDGE PIER 1 REMOVE RUBBLE LEFT ABUTMENT WALL FROM 2021 DIVE INSPECTION INSPECTION HOLE (TYP.). REPAIR, SEE • 11 SEE DRAWING C-05 ® D 7 e 16 1 1B Q ® 1 3 WEST (RIGHT) EXISTING ABUTMENT SPILLWAY DOWNSTREAM EDGE OF SPILLWAY 1 4-8 FIELD FIT SLOPE TO �( AVOID EXTENDING C-05 CONCRETE APRON EXTENTS UNKNOWN PAST VERTICAL FACE i OF PIER EAST (LEFT) ABUTMENT UNDERMINING REPAIR, i SEE 2 C-07 APPROX SHORELINE 8I$ W age a ail¢ BRIDGE DECK EL. S60.0 yl NI Im LOW STEEL EL. 657.5' i WEST (RIGHT) ABUTMENT DAM CREST EL. 648.5' • a � • WEST(RIGHT)-'___i_i_,_I-1-1 BEDROCK EL. 64T AT ABUTMENT CONCRETE APRON (THICKNESS UNKNOWN) - (HISTORIC BORING 137) No. Station I Length (ft) Height (ft) Depth (ft) Area ft= Estimated Volans ft 1 1 1+49 1 12.0 2.0 9.0 24.0 216.0 2 2+94 2.0 1.0 3.0 2.0 6.0 3 1 3+00 1 10.0 1.0 1.5 10.0 1 15.0 Note: L & H Rounded to nearest foot TotaF= 36.00 1 237 f '3 �1 TABLE: UNDERMINING VOIDS PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 BIDDING AND CONSTRUCTIO REVISION DESCRIPTION DOWNSTREAM STREAMBED (APPROX) %11 PLAN: DAM REPAIR LOCATIONS 4 0 12 24 SCALE V 11 ' Q _ %21 ELEVATION: DAM REPAIR LOCATIONS 0 12 24 1....SCAL..........1....1 E No. Station Length R) Height (R) Depth (ft) Area (ft'l Estineted Volurre fts 4 0+04 2.0 1.0 1.2 2.0 3.0 5 0+06 5.0 1.0 0.7 5.0 4.0 6 0+61 1.0 1.0 0.5 1.0 1.0 7 1+53 6.0 1 1.0 0.5 6.0 3.0 8 1+62 1.0 1 1.0 0.5 1.0 1.0 Note: L & H Rounded to nearest foot Totab 15.0 12 ft"3 TABLE: SHALLOW SPALLING WITH NO EXPOSED REBAR TRIM RE13AR AND j• REMOVE RUBBLE i...T- 7_7_7. No. Station Length (ft) Height (ft) Depth (ft) Area (ft2) Estimated Volume (ft� 9 1+03 2.0 4.0 1.7 &0 14.0 10 1+03 2.0 1.0 1.0 2.0 2.0 11 1+29 1.0 1.0 0.7 1.0 1.0 12 1+40 1.0 1.0 0.1 1.0 1.0 13 1+40 2.0 2.0 4.0 4.0 16.0 14 1+49 2.0 2.0 1.0 4.0 4.0 15 1 1+51 2.0 1 1.0 0.8 1 2.0 2.0 16 1+67 5.0 1.0 1.5 5.0 8.0 17 1+81 5.0 2.0 3.0 10.0 30.0 18 2+20 5.0 1.0 2.0 5.0 10.0 19 2+26 3.0 1.0 1.5 3.0 5.0 20 2+30 3.0 2.0 1.5 6.0 9.0 21 2+60 2.0 2.0 2.0 4.0 8.0 22 2+88 2.0 2.0 1.0 4.0 4.0 23 2+90 1.0 1.0 1.0 1.0 1.0 Note: L.H Rounded to nearest foot Totak 60.0 115 R"3 /-51 TABLE: SHALLOW SPALLING WITH EXPOSED REBAR Pmjem On. AS SHOWN �RMrITING W5 - - - BARR ENGINEERING CO. D- 10/25/2024 D 5 _ R RR 4300 MARKETPOINTE DRIVE D-h AWT �NsrnucnoN - - i/A SUITE 200 :CORD ]�3 MINNEAPOLIS, MN 55435 cneacaa JKH2 A B C 0 1 cOfPO .H•awan'm: Pn: ,00.632.2, Desy1»a JAW2 RELEASED m-PAis. Mnnasda Fax:(952)832-Ml TO/FOR DATE RELEASED Ph:1-80 632-2277 +, ,�R mm ^�1O°� TSH CITY OF IOWA CITY IOWA CITY, IOWA 3 CLS PLACE EROSION PROTECTION MATERIAL N G / OBSERVED SEEPAGE LOCATION FROM 2021 INSPECTION BLENDINTO EXISTING SLOPE /(FIELD FIT) APPROX. SHORELINE LEGEND R -..1 APPROXIMATE SIZE ALLOCATION OF DEFECT NOTES 1. DEFECTS LOCATIONS AND DIMENSIONS (APPROXIMATE) FROM 2021 ■ SHALLOW SPALLING WITH.NO EXPOSED REBAR AND 2024 DIVE INSPECTIONS PERFORMED BY GOE INTERNATIONAL LLC AND J.F. BRENNAN RESPECTIVELY. DIVE INSPECTION REPORTS SHALLOW TO MODERATE SPALLING WITH AVAILABLE UPON REQUEST. EXPOSED REBAR 2. INSPECTION HOLE QUANTITY AND LOCATIONS MAY BE MODIFIED BY 0 UNDERMINING VOIDS ENGINEER IN THE FIELD BASED ON SITE CONDITIONS. ■ ABUTMENT WALL VOID .:. I ■ GENERAL REPAIRS L;? p N SIN Nw W_ _) N1 NI" EAST (LEFT) ABUTMENT ABUTMENT WALL PIER BASE EL 643.74' FIELD FIT SLOPE TO AVOID EXTENDING PAST VERTICAL FACE OF PIER --_- T-T-T-i-i-T-1 1=1-I;I,I-li ® C PLACE EROSION PROTECTION MATERIAL 1-1-1-1-1-1-1-1-1-1-1- BEDROCK EL. 631' NEAR ABUTMENT (HISTORIC BORING 82) IN Station I Length I Height (ft) I Depth (ft) Area ft2 Estimated Volume ft3 24 2+91 4.0 1.5 4.0 6.0 24.0 6 TABLE: ABUTMENT WALL VOID ISSUED FOR BIDDING AND CONSTRUCTION IOWA RIVER POWERHOUSE DAM REPAIR PROJECT BARR PROJECT No. IOWA CITY, IOWA 155 PROJECT NNo. 00 CLIENT o. DAM REPAIR LOCATIONS DWG. No. PLAN AND ELEVATION REV. No. Ci-04 0 1TYP. INSPECTION PER 2 HOLE 3 EX CONCRETE DAM FACE (REPAIRED Oy-� BY OTHERS IN 2003-2004) EX CONCRETE SHELL l� EL 6488 3H:1V OR FLATTER APPROX. 16' THICK ` :-•....7 EL N72 ^ _ _ _ _ _ _ _ _ _ EL. 643.74' VOID FILLED WITH "HIGH `` s� `�^ EX SPILLWAY 24" THICK IOWA DOT I SLUMP CONCRETE" IN 2021 • ''" REVETMENT, CLASS B — — — EL. 643.50'01 EX ROCK FILL DAM VOIDS FILLED WITH COARSE FILTER AGGREGATE 10 'FLOWABLE MORTAR" BY OTHERS IN 2003-2004'f �i IF VOID IS FOUND, .L17, FILL WITH SPILLWAY VOID FILL MATERULL EL 641.0' (APPROX.) — — PLACE CLASS B REVETMENT AND COARSE ASSUMED BEDROCK FILTER AGGREGATE MATERIALS DIRECTLY AGAINST EX (FIELD Fin 3 SECTION: EROSION PROTECTION C-0o 0 3 6 I i I I ' .. .. `. Y.;.. SCALE IN FEET /-1, SECTION: INSPECTION HOLES AND SPILLWAY VOID FILLING STILLING BASIN GEOMETRY UNKNOWN C-Oa 0 5 10 I I I SCALE IN FEET NOTES 1. DEPTH OF EXISTING REINFORCEMENT, SPACING AND NUMBER OF MATS UNKNOWN. 2. PROVIDE 1 INCH DEEP SAW CUT AROUND PERIMETER OF INSPECTION HOLE. 3. USE AIR DRIVEN CHIPPING HAMMER WITH CHISEL (BULL) POINTS TO EXTEND INSPECTION HOLE THROUGH CONCRETE SHELL. PROTECT EXISTING REINFORCEMENT. 4. SEE eFOR INSPECTION HOLE AND STRUCTURAL PATCHING REQUIREMENTS. 5. THE OBJECTIVE OF THE INSPECTION HOLES IS TO DETERMINE THE SPILLWAY CONDITION BELOW THE CONCRETE SHELL COMPLETE INSPECTION HOLES IN DRY CONDITIONS IN COORDINATION WITH THE ENGINEER. 6. AT EACH INSPECTION HOLE, THE CONTRACTOR SHALL MEASURE THE CONCRETE SHELL THICKNESS, AND DEPTH OF VOID (IF ENCOUNTERED). 7. CONTRACTOR SHALL DEVELOP A VOID FILLING PLAN (FOR APPROVAL BY ENGINEER) THAT INCLUDES VOID FILLING SEQUENCING, INJECTION PRESSURES, AND METHODOLOGY FOR MONITORING THE SPILLWAY DURING VOID FILLING. 12' X 12" INSPECTION HOLE INSTALL #5 DOWEL EMBED WITH EPDXY ANCHOR (TYP.) EXISTING CONCRETE SHELL APPROX. 16' THICK EX REINFORCEMENT \l. PATCH INSPECTION HOLE WITH REPAIR MORTAR SPILLWAY VOID FILL MATERIAL SECTION DETAIL: INSPECTION HOLES PATCHING 0 2 I I I SCALE IN FEET NOTES 1. NOTIFY ENGINEER IF PROPOSED DOWELS INTERFERE WITH EXISTING REINFORCEMENT. 2. FIELD BEND DOWELS AS NECESSARY TO INSTALL AS SHOWN IN DETAIL. PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 86 4 12' X 12" INSPECTION HOLE ONE DOWEL PER SIDE (ONLY TWO SHOWN FOR CLARITY) PLAN NOTES 1. IOWA DOT CLASS B REVETMENT REQUIREMENTS A. NOMINAL TOP SIZE OF 600 LBS. B. AT LEAST 20% OF THE STONES SHALL WEIGH MORE THAN 500 LBS. C. AT LEAST 20% OF THE STONES SHALL WEIGH MORE THAN 275 LBS. D. AT LEAST 20% OF THE STONES SHALL WEIGH MORE THAN 25 LBS. 2. COARSE FILTER AGGREGATE (USACE B2) SHALL MEET THE BELOW GRADATION SIEVE SIZE PERCENT PASSING 6" 100 4' 79-100 3- 71-W 1.5. 54-71 } 3B84 } 2238 #4 7.22 #10 05 ISSUED FOR BIDDING AND CONSTRUCTION PERMITTING - alzzs — — - 2s - — - — - — wopa 0m BARR ENGINEERING CO. � � 4300 MARKETPOINTE DRIVE SUITE 200 — MINNEAPOLIS, MN 55435 Ma °M. PI, i�por32- z PR:1-BOOA32-2277 F¢(W)02-2601 s—l° OHO AS SHOWN 09/30/2024 CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. 15521009.00 elo or. RL62 CLIENT PROJECT No. c NSTRUCTION i 25 RECORD tt — — — — cl— De g—I JKH2 DAM REPAIRS DETAILS 0 LB AW TSH 06/252025 ISSUED FORBIDDING AND CONSTRUCTION RELEASED TO/FOR A B C 0 1 2 3 NO. BY CHK APP. DATE REVISION DESCRIPTION DATE RELEASED JAVJ2 DWG. No. C-05 REV. NopcW 0 MPS TSH 'ARED SURFACE LIMITS OF DETERIORATED CONCRETE (SEE NOTE 1) �- EXISTING CONCRETE "A" BARS W/ STD 90' BEND DRILL AND ANCHOR 12" INTO PERIMETER SAW CUT (SEE NOTE 2) EXISTING CONCRETE NEW CONCRETE OR REPAIR MATERIAL FACE TO BE SAW CUT AT EDGE 'A" BARS, SEE TABLE 1, FLUSH WITH SURROUNDING SOUND CONCRETE OF PATCH (TYP.) ORIENTATION OF REBAR MATS ALL LOOSE MATERIAL SHALL BE REMOVED REMOVE DETERIORATED CONCRETE UNTIL INSTALL REPAIR MORTAR FLUSH WITH RELATIVE TO THE TAILS OF THE WITH SMALL EQUIPMENT (15 LB HAMMER MAX) SOUND CONCRETE IS REACHED -SEE NOTE 4 EXISTING CONCRETE: ¢ w ANCHOR BARS SHALL BE AS SHOWN a U WITH THE LOWER MAT REBAR w BENEATH THE HOOKS AS SHOWN EXISTING CONCRETE •. wY _ :.� '�... �`'Y• �_•�;- •.Cy y .'n;�:ai:}7 •.r••. •,.. •�: •r>';� '' ~ ,� .•.li.r�. "•...,•!. �' •>J" LL= �,rr •,41::'!" ;;A.}ti. _," .'T �. f`.rr.'4':h V° a4. �-i y-4-w' ��!�rii d'r >�.: :dui)arf•S`1.�:}.:�!`�C:_,':fly7• ::/!}4{�.h. j�.%�'f1�•ln-'..yY I-- A -A A 1 DETAIL: SHALLOW CONCRETE REPAIR DEPTHS: 0" TO 3" N.T.S. NOTES 'ERIMETER SAW CUT (SEE NOTE 2) 1. CONTRACTOR TO DETERMINE REPAIR LOCATIONS AND LIMITS OF DETERIORATED CONCRETE. 2. MAKE A PERPENDICULAR SAW CUT AT LEAST 1 1/2" DEEP, BUT NO DEEPER THAN THE REINFORCING STEEL, A MINIMUM OF 6" OUTSIDE THE AREA TO BE REPAIRED. THE PERIMETER SAW CUT SHALL HAVE NO ANGLES LESS THAN 90 DEGREES. EXERCISE CARE NOT TO CUT THROUGH EXISTING STEEL REINFORCEMENT. IF EXISTING REINFORCEMENT IS DAMAGED, REPAIR IN ACCORDANCE WITH THESE DETAILS. 3. PREPARE SURFACE BY REMOVING EXISTING CONCRETE WITH IMPACT TYPE POWER TOOLS TO A DEPTH NECESSARY TO EXPOSE A SURFACE OF SOUND, UNWEATHERED CONCRETE THAT IS UNCONTAMINATED BY OILS, GREASES, OR DEBRIS. WHEN REQUIRED BY THE MANUFACTURER, PRIME SURFACES PREPARED TO RECEIVE REPAIR MATERIAL USING THE MANUFACTURER'S RECOMMENDED BONDING AGENT. 4. PROVIDE BLOCKOUTS FOR THE CONTINUATION OF ANY JOINTS ACROSS THE REPAIR, PLACE, CONSOLIDATE AND FINISH MATERIAL. 5. REPAIR MORTAR SHALL BE SIKARPEPAIR 224 OR ENGINEER APPROVED EQUAL. PLACE WITH TROWEL IN MAXIMUM 2 INCH LIFTS. LIMITS OF DETERIORATED CONCRETE, SEE NOTE 1 PERIMETER SAW CUT REMOVE DETERIORATED CONCRETE UNTIL SOUND CONCRETE IS REACHED, SEE ^ 2 EXPOSED REBAR- EVALUATE AND REPAIR IF REQUIRED - SEE NOTES EXISTING CONCRETE SOUND/SOLID EXISTING CONCRETE AREA OF REINFORCEMENT WITH SECTION LOSS GREATER THAN 25% IF WIDTH OF BAR INSTALL REPAIR BAR IN ACCORDANCE WITH NOTES AND TABLE BELOW CONCRETE FLUSH WITH 3 CONCRETE 3^ 2'-0" OR D/3 (OCEW) I NEW CONCRETE 3" I (WHICHEVER IS LESS) TABLE 1 SURFACE REPAIR THICKNESS BAR SIZE "A' SPACING 4" TO 8" M4 1 O" OC EACH WAY >1 " 3 DETAIL: TYP CONCRETE DOWEL REPAIR " = 1'-0" NOTES: 1. PRIOR TO PERFORMING REPAIR, SOUND CONCRETE BY TAPPING IT WITH A HAMMER TO DEFINE A BOUNDARY. BOUNDARY SHALL BE APPROX. 61NCHES BEYOND THE TRANSITION BETWEEN SOUND AND UNSOUND CONCRETE. 2. WHERE EXISTING REBAR IS ENCOUNTERED DURING REPAIR LEAVE IN PLACE AND REMOVE SURROUNDING CONCRETE. 3. WHERE REBAR IS TO BE ANCHORED INTO EXISTING CONCRETE, USE HILTI HIT RE-500 V3. NO SUBSTITUTIONS ARE PERMITTED WITHOUT ENGINEER'S WRITTEN APPROVAL. INSTALLATION MUST BE IN STRICT ACCORDANCE WITH ALL MANUFACTURER'S PRINTED INSTRUCTIONS. 4. PRIOR TO PLACING FRESH CONCRETE OR REPAIR MATERIAL IN CONTACT WITH EXISTING CONCRETE SURFACES, SUCH SURFACES SHALL BE THOROUGHLY CLEANED BY SAND BLASTING OR HIGH PRESSURE WATER JETTING (TYPICAL FOR ENTIRE PROJECT). REBAR SIZE TOTAL LENGTH OF SPLICE BAR REQUIRED .�.."! 2 DETAIL: SHALLOW TO MODERATE CONCRETE REPAIR WITH REBAR DEPTHS: 3" TO 20" 4 2'-0" WITH 180° HOOK EA. END E 1 N.T.S. 5 Z-6" WITH 180" HOOK EA. END .,.•""' NOTES: .— 2 1. CONTRACTOR TO DETERMINE REPAIR LOCATIONS AND LIMITS OF DETERIORATED CONCRETE. .. ` 2. MAKE A PERPENDICULAR SAW CUT AT LEAST 1 1/2" DEEP, BUT NO DEEPER THAN THE REINFORCEMENT STEEL, A MINIMUM OF 6" OUTSIDE THE AREA TO BE REPAIRED. 3. REMOVE EXISTING CONCRETE WITH IMPACT -TYPE POWER TOOLS. IF CONCRETE REMOVAL AROUND EXPOSED REINFORCING STEEL IS REQUIRED USE CHIPPING HAMMERS WEIGHING LESS .. THAN 15 POUNDS, ABRASIVE WATER CUTTING, ORHIGH-PRESSURE WATER FOR REMOVAL. Y 4. IF THE BOND BETWEEN THE CONCRETE AND ANY REINFORCING STEEL HAS BEEN DESTROYED, PROVIDE A MINIMUM CLEARANCE BELOW THE REINFORCING STEEL OF 1". ",...„. 5. REMOVE ALL CORROSION FROM REINFORCING STEEL USING A WIRE BRUSH. 6. REINFORCING BARS WHICH ARE DETERIORATED AT ANY POINT WHERE THE ORIGINAL CROSS SECTION OF ANY BAR HAS BEEN REDUCED BY MORE THAN 25 PERCENT SHALL BE REPAIRED BY co ADDING A SPLICED BAR. e a 7. SPLICING SHALL BE BY LAPPING OR BY MECHANICAL OR WELDED BUTT CONNECTION. 8. REINFORCEMENT SHALL BE FREE FROM LOOSE RUST AND SCALE. DIRT, OIL, OR OTHER DELETERIOUS COATINGS THAT COULD REDUCE BOND WITH CONCRETE. 9. INSTALL REPAIR DOWELS PER DETAIL -- 10. INSTALL FRAMEWORK AND CONCRETE ISSUED FOR BIDDING PROJECT DATUM: AND CONSTRUCTION HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 PERMITTNG 1125 Pr°I¢edO1Pce- BARR ENGINEERING CO. � � 43110 MARKETPOINTE DRIVE SUITE 200 — MINNEAPOLIS. MN 55435 eomnmie Nea4°uaners: P »Dou32-V2 Minneapolis. Minnesota Pe: tA00-632-2zn F _ (9 2)8322sa1 ean.arn Day° Dawn ASJHOWN 09/30/2024 W CITY IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA " �R.R.,.,��� � 15521009.00 CONSTRUCTION ants — RL82 DAM REPAIRS DETAILS CLIENT PROJECT No. G°BC1etl JKH2 RECORD — A — B — C — 0 — 1 — 2 — 3 0 LB AW TSH 06/252025 ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TO/FOR De.g9 JAW2 DWG. No. C-06 REV. No. 0 NO. BY CHK APP. DATE REVISION DESCRIPTION DATE RELEASED npp,o�ee TSH UPSTREAM GEOMETRY FF 2024 DIVE INSPECTION 1 w 'i FII I VnIn WITH C.nN!'RF I DETAIL: PIER 1 UNDERMINING REPAIR `X0 5 10 I I I ' SCALE IN FEET NOTES 1. CONTRACTOR TO DETERMINE REPAIR LOCATION AND LIMITS OF VOID. 2. REMOVE ALL DEBRIS AND UNSOUND MATERIAL FROM VOID EXTENTS. 3. PROVIDE FORMS OR GROUT BAGS FOR UNDERWATER CONCRETE PLACEMENT. 4. INSTALL CONCRETE IN VOID. CONCRETE SHALL HAVE AN ANTI -WASHOUT AGENT AND BE FIBER REINFORCED. 5. GEOMETRY OF UPSTREAM SIDE OF PIER 1 IS APPROXIMATED FROM 2024 DIVE INSPECTION. ACTUAL GEOMETRY MAY DIFFER FROM WHAT IS SHOWN. PIER 2 PIER 2 ENCASEMENT I I FILL VOID WITH CONCRETE -' �� Cn FILL VOID WITH CONCRETE LI t7 J A A PLAN -R 2 ENCASEMENT I SECTION A -A 2 \ DETAIL: EAST (LEFT) ABUTMENT UNDERMINING REPAIR '%V N.T.S. NOTES 1. CONTRACTOR TO DETERMINE REPAIR LOCATION AND LIMITS OF VOID. 2. REMOVE ALL DEBRIS AND UNSOUND MATERIAL FROM VOID EXTENTS. 3. PROVIDE FORMS OR GROUT BAGS FOR UNDERWATER CONCRETE PLACEMENT. 4. INSTALL CONCRETE IN VOID. CONCRETE SHALL HAVE AN ANTI -WASHOUT AGENT AND BE FIBER REINFORCED. HOOKED DOWEL (TYP) r eTI �I REMOVE MATERIAL 6" DEEP - I I - I I SEE 4 FOR PHOTO OF REPAIR EXTENTS ' I I I w I I I I I I I I I L— _ ------------------- SECTION B-B m B[— K 4.-.. 3' CLEAR COVER 05 REBAR 6•' O.C. EACH WAY • • • • N. a FILL VOID WITH CONCRETE HOOKED DOWELS 0 12- AROUND PERIMETER, SI B V 3 DETAIL: LEFT ABUTMENT REPAIR 0 1 2 I I II NOTES 1. CONTRACTOR TO DETERMINE REPAIR LOCATION AND LIMITS OF DETERIORATED CONCRETE. 2. MAKE A PERPENDICULAR SAW CUT AT LEAST 1 1l2' DEEP, BUT NO DEEPER THAN THE REINFORCMENT STEEL, A MINIMUM OF 6- OUTSIDE THE AREA TO BE REPAIRED. 3. REMOVE CONCRETE WITH IMPACT -TYPE POWER TOOLS. IF CONCRETE REMOVAL AROUND EXPOSED REINFORCEMENT STEEL IS REQUIRED USE CHIPPING HAMMERS WEIGHING LESS THAN 15 POUNDS, ABRASIVE WATER CUTTING, OR HIGH-PRESSURE WATER FOR REMOVAL 4. IF THE BOND BETWEEN THE CONCRETE AND ANY REINFORCING STEEL HAS BEEN DESTROYED, PROVIDE A MINIMUM CLEAREANCE BELOW THE REINFORCING STEEL OF 1". S. REMOVE ALL CORROSION FROM REINFORCING STEEL USING A WIRE BRUSH. 6. REINFORCING BARS WHICH ARE DETERIORATED AT ANY POINT WHERE THE ORIGINAL CROSS SECTION OF ANY BAR HAS BEEN REDUCED BY MORE THAN 25 PERCENT SHALL BE REPAIRED BY ADDING A SPLICED BAR. 7. SPLICING SHALL BE BY LAPPING OR BY MECHANICAL OR WELDED BUTT CONNECTION. 8. REINFORCEMENT SHALL BE FREE FROM LOOSE RUST OR SCALE, DIRT, OIL OR OTHER DELETERIOUS COATINGS THAT REDUCE BOND WITH CONCRETE. 9. INSTALL NEW REINFORCEMENT AND DOWELS AS SHOWN. 10. INSTALL FORMWORK AND PLACE CONCRETE. DEMO 6' DEEP AROUND PERIMETER OF SPALLING. EXTEND 6' PAST ANY EXISTING DAMAGE AND RE -POUR CONCRETE i__ .1 w- ., , I PROJECT DATUM: HORIZONTAL: STATE PLANE (NAD83), SOUTH, US FT VERTICAL: NAVD 88 4 PHOTO: LEFT ABUTMENT REPAIR ISSUED FOR BIDDING AND CONSTRUCTION CLIENT &1625 — amodOrr— BARR ENGINEERING CO. � 4300MARKETPOINTEDRNE SUITE 200 MINNEAPOLIS, MN 55435 c«�o.ale Heaaouaners. lZ 22n Mmreapor.s. Fn��"ewla Ea,c_Is00.632 zeo1 PR 1-80-32-ern , Scale oelO ASSHOWN CITY OF IOWA CITY IOWA CITY, IOWA IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY, IOWA BARR PROJECT No. aERNITTINc — y1125 — — 525 — — — BID 09/30/2024 15521009.00 CLIENT PROJECT No. o�»„ CONSTRUCTION 25 —--BARRLB2 REGORD "`"°° oev9rea JKHz DAM REPAIRS DETAILS 0 LB AW TSH OF✓25R025 ISSUED FOR BIDDING AND CONSTRUCTION RELEASED TO/FOR A B C 0 1 2 3 NO. BY CHK APP. DATE REVISION DESCRIPTION DATE RELEASED JAW2 DWG. No. C_07 REV. No. 0 Arno°� TSH 7 8' ACC TRAIL - COMPACTED FILL 8' GRANULAR SUBBASE 1% 6 - - 14'-0' EXISTING TRAIL SECTION G o NOT TO SCALE 4" TYPE "B" ASPHALT BASE VARIES I 10' 1'-0" SUBGRADE - PREPARATION (TYP.) 2.5' 6' 6' 2.5' PROFILE GRADE� I 2% / 2" TYPE "A" ASPHALT SURFACE EARTH SHOULDER p,"_ VARIES 10, /"-21 EXISTING TRAIL SECTION Gi0 NOT TO SCALE 2" TYPE "A" ASPHALT SURFACE 2.5 EARTH SHOULDER I I I ' PROFILE GRADE 2% I VARIES 1 r— (SEE CROSS ECTIONS 1 IES 4" TYPE "B" ASPHALT BASE VAR1l Jam— o. 10' ) 1'—O" SUBGRADE PREPARATION (TYP.) /�-31 EXISTING TRAIL SECTION NOT TO SCALE 2" TYPE 'A" ASPHALT SURFACE 2.5' 6' 6' 2.5' EARTH SHOULDER 1 4' TYPE 'B" ASPHALT BASE ROFILE GRADE 2% 4X 1 �— r}, VARIES A� 'A VARIES J zz 2% 0" 10'P ) 1'-0" SUBGRADE PREPARATION (TYP.) a EXISTING TRAIL SECTION �-o NOT TO SCALE MATCH EXISTING RECREATIONAL TRAIL, HOT MIX ASPHALT, 6". PLACED IN LIFTS NOT TO EXCEED 2" THICKNESS I CL TOPSOIL, SEED, I O TOPSOIL, SEED, FERTILIZE 8 MULCH 10' OR 12' (SEE PLAN) FERTILIZE 8 MULCH ® 1 VARIES 2'E" EQUAL EQUAL 2'-6" VARIES MATCH EXISTING 6:1 OR TRAIL PROFILE 1 5% MAX tO 6:1 OR FLATTER FLATTER eS �gRgS Im /--6-'\TYPICAL TRAIL SECTION G1 o NOT TO SCALE NOTES: 1. INSTALL UNIFORM CROSSSLOPE OF NOT TO EXCEED 1.5%. OWNER'S REPRESENTATIVE TO DETERMINE SLOPE DIRECTION AND THE LOCATION TO TRANSITION FROM RIGHT TO LEFT. CROSS SLOPE TO MAINTAIN POSITIVE DRAINAGE AT ALL TIMES. SMOOTH TRANSITIONS OF CROSS SLOPE ARE REQUIRED 2. TRAIL PAVEMENT TO BE A MINIMUM OF 10' WIDE AND MATCH EXISTING PAVED WIDTH. 3. REPLACE SUBBASE AT ALL TRAIL LOCATIONS MARKED BY OWNER'S REPRESENTATIVE FOR REPLACEMENT. 4. DO NOT REDUCE EXISTING SHOULDER WIDTH 5. RESTORE AREAS ADJACENT TO TRAIL DISTURBED BY CONSTRUCTION TRAFFIC MATCH EXISTING J 6" SPECIAL BACKFILL O3 EARTHEN SHOULDERS, TYP • c 0 �1 iq origindesign.com 800 556-4491 CITY OF IOWA CITY IOWA RIVER POWERHOUSE DAM REPAIR PROJECT IOWA CITY > o 'o Sheet Title TYPICAL SECTIONS THE REGION INDICATED ON THIS SHEET IS THE LIMITS OF EXISTING PAVED TRAIL WHICH ARE CONSIDERED TO BE A PART OF THE CONTRACTOR'S ACCESS ROUTE. THE INTENT OF THE "REMOVAL OF SHARED USE PATH" AND "SHARED USE PATH, HMA 6 IN" BID ITEMS ARE TO REMOVE AND REPLACE SECTIONS OF THE EXISTING TRAIL DAMAGED DURING CONSTRUCTION. TRAIL DAMAGES CAUSED BY THE CONTRACTOR OUTSIDE OF THE LIMITS SHOWN ON THIS PLAN SHEET WILL BE REPAIRED AT THE CONTRACTOR'S COST. PRIOR TO CONSTRUCTION THE CONTRACTOR AND OWNER WALL WALK THE TRAIL TO DOCUMENT CURRENT CONDITIONS. IT IS NOT ANTICIPATED THAT THE ENTIRE TRAIL PAVEMENT WILL NEED TO BE REPLACED, BUT ONLY THAT SPOT REPAIRS WILL BE PERFORMED. QUANTITIES IDENTIFIED IN THE PLANS ARE ESTIMATED AT 30% OF THE TOTAL AREA SHOWN. ACTUAL QUANTITIES WILL BE MEASURED FOR PAYMENT BASED ON THE LIMITS APPROVED BY THE OWNER. START PROPOSED 10' TRAIL END PROPOSED 10' TRAIL, / START OF 12' TRAIL. APPROX. f/ LOCATION << 2 C40 I I \ EXISTING WETLANDS / 2 \ N HORIZONTAL SCALE IN FEET 0 60 120 DRAWNG MAY HAVE BEEN REDUCED E�0 i F ,WkJ _ 1 J P� VJ� cCIV IV y PROPOSED TRAIL RESTORATION 4 4 LIMITS WHICH ARE ELIGIBLE FOR CITY J Q PARTICIPATION IN RESTORATION COSTS z _- �1 77 4 CONTRACTOR MAY BE ALLOWED TO ACCESS VIA THE EXISTING FLAT SHOULDER IN THIS REGION TO MINIMIZE DAMAGE ON THE TRAIL. THIS SUBJECT WILL BE DISCUSSED AT THE PRECONSTRUCTION MEETING • e a M q -4 Fy 0 >t d' O 3q origindesign.com 800 556-4491 eoq�wo:w CITY OF IOWA CITY Project Name IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Location / Description IOWA CITY � m n z �e O o v p Z m U. O `o U oLL LL Z v m < m I Z - s o < m 2F a' p W • LL O y mi > > m o Z2 o_s N N m O' IY d a e Sheet Title TRAIL REPAIR PLAN ` FULL TRAIL WIDTH SHALL BE KEPT OPEN AT ALL TIMES, DO NOT DISTURB EXISTING TRAIL OR SIDEWALK i) a. PARKING LOT FOR POWERHOUSE 'L RESTAURANT _ Z � r �.� ilk� I f. 1 ,r f j 51 r HORIZONTAL SCALE IN FEET i 0 60 120 DRAMNG MAY HAVE BEEN REDUCEDNow L THIS TRAIL SPUR CAN BE CLOSED TO PUBLIC BUT MUST BE AVAILABLE TO CITY STAFF AS NEEDED FOR WELL HOUSE MAINTENANCE. CITY WILL INFORM CONTRACTOR WHEN ACCESS IS NEEDED. CONTRACTOR USE OF THIS TRAIL SPUR BEYOND THE LIMITS SHOWN IS NOT ALLOWED. IF THIS TRAIL SPUR IS DAMAGED BEYOND THE INDICATED LIMITS, CONTRACTOR SHALL REPAIR AT NO COST TO THE CITY. TRAIL MAY BE USED AS SITE ACCESS. REFER TO TRAFFIC CONTROL AND STAGING NOTES THIS SHEET FOR ASSOCIATED REQUIREMENTS. )WERHOUSE DAM TRAFFIC CONTROL AND STAGING NOTES 1. ALL TRAFFIC CONTROL DEVICES, PROCEDURES, AND LAYOUTS WITHIN THE LIMITS OF THIS PROJECT SHALL CONFORM TO THE "MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES FOR STREETS AND HIGHWAYS (MUTCD) AS ADOPTED BY THE IOWA DEPARTMENT OF TRANSPORTATION PER 761 OF THE IOWA ADMINISTRATIVE CODE (IAC), CHAPTER 130'. THE CONTRACTOR SHALL FURNISH TRAFFIC CONTROL INCLUDING BARRICADES AND SIGNS AND SHALL BE RESPONSIBLE FOR SIGNING. THE CONTRACTOR SHALL FURNISH, ERECT AND MAINTAIN ALL NECESSARY TRAFFIC CONTROL DEVICES ON A 24 HOUR PER DAY, 7 DAYS A WEEK BASIS DURING THE CONSTRUCTION PERIOD AND SHALL PROVIDE A 24 HOUR CALL NUMBER FOR REPAIR OF DEFICIENCIES. 2. ALL PUBLIC STREETS SHALL BE OPEN TO ALL TRAFFIC AT ALL TIMES. 3. THE TRAIL BRIDGE CROSSING THE IOWA RIVER CANNOT BE DISTURBED AND SHALL BE OPEN AT ALL TIMES. 6. THE PRIMARY IOWA RIVER TRAIL CONNECTION FROM THE BRIDGE TO FOSTER ROAD MUST REMAIN OPEN WITH AN ADA ACCESSIBLE PATH A MINIMUM OF 4' WIDE AT ALL TIMES WHILE CONTRACTOR IS USING THE ROUTE TO ACCESS THE DAM SITE FOR THE DAM REPAIR WORK. ONCE THE CONTRACTOR IS FINISHED USING THE TRAIL AS AN ACCESS ROUTE, IT IS ANTICIPATED THAT TRAIL REPAIRS INCLUDING REMOVAL AND REPLACEMENT OF THE HMA PAVEMENT AND BASE COURSE WILL BE MADE TO DAMAGED AREAS AS DIRECTED BY THE OWNER'S REPRESENTATIVE. DURING THESE TRAIL REPAIRS, A SHORT TERM CLOSURE OF THE TRAIL TO ALL USERS TO COMPLETE THE REPAIRS WILL BE ALLOWED. 7. TRAIL SPURS AS NOTED CAN BE CLOSED TO TRAIL TRAFFIC. 6. THE CONTRACTOR SHALL SUBMIT A TRAFFIC CONTROL PLAN INDICATING MEANS AND METHODS OF ACCOMMODATING TRAIL USERS DURING CONSTRUCTION. THE TRAFFIC CONTROL AND STAGING PLAN SHALL BE SUBMITTED A MINIMUM OF TWO WEEKS PRIOR TO CONSTRUCTION TO ALLOW FOR CITY REVIEW. THE CONTRACTOR SHALL INCORPORATE ANY COMMENTS PROVIDED BY THE CITY. 7. IF THE CONTRACTOR IS UTILIZING THE EXISTING TRAIL FOR ACCESS, FLAGGERS SHALL BE USED TO PROVIDE FOR THE SAFETY OF TRAIL USERS WHEN CONSTRUCTION EQUIPMENT IS ON THE TRAIL. FLAGGERS SHALL BE INCIDENTAL TO THE WORK OPERATION. FLAGGING PROCEDURES AND EQUIPMENT SHALL MEET THE REQUIREMENTS OF CHAPTER 6 OF THE MUTCD. 8. ALL TYPE III BARRICADES AS NEEDED TO CLOSE THE TRAIL SHALL BE ADA COMPLIANT. 9. STAGING AND WORK AREA SHALL HAVE FENCING APPROPRIATE TO KEEP TRAIL USERS FROM ENTERING THE WORK OR STAGING AREAS. 0 » C W "."I 3C Ln O LY •-� O O H z • - O O Z SL O _at O 3 origindesign.com 800 556-4491 CITY OF IOWA CITY Project Name IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Location i Description IOWA CITY Sheet Tide WEST TRAFFIC CONTROL TC-01 cl HORIZONTAL SCALE IN FEET 0 20 40 DRAWING MAY HAVE BEEN REDUCED END OF RADIUS OF CURB Ys v Client Name CITY OF IOWA CITY Protect Name IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Location / Description IOWA CITY ❑ O o U 2 O Z m U ; O O LL LL; ❑ v 0 Q N a z N W I Z - 1 ❑ i m a =i O C N W 1 U. O N - ❑ na �+ y mz'i': o: TRAFFIC CONTROL lb U� �0 OU �z O O �I U0 PERMITS IOWA DEPARTMENT OF NATURAL RESOURCES PERMIT NO.: FP 2001-222 DATE: SEPT. 4, 2001 U.S. ARMY CORPS OF ENGINEERS PERMIT NO.:CEMVR-OD-P-407720 DATE: APRIL 6, 2001 SPECIFICATIONS THE STANDARD SPECIFICATIONS, SERIES OF 2001, OF THE IOWA DEPARTMENT OF TRANSPORTATION, PLUS CURRENT SUPPLEMENTAL SPECIFICATIONS AND SPECIAL PROVISIONS SHALL APPLY TO CONSTRUCTION WORK ON THIS PROJECT. PROJECT TRAFFIC CONTROL PLAN THE PARKING LOT FOR IOWA RIVER POWER CO. RESTAURANT SHALL BE MAINTAINED FOR PATRONS AS INDICATED IN THE PLANS. CONSTRUCTION VEHICLES SHALL NOT BE PARKED IN THE PUBLIC PARKING AREAS. ACCESS INSIDE THE TEMPORARY CONSTRUCTION EASEMENT SHALL BE SECURELY RESTRICTED WITH FENCING. SHOP DRAWINGS ALL SHOP DRAWINGS AND FALSEWORK DRAWINGS THAT REQUIRE APPROVAL SHALL BE SUBMITTED TO: NNW, INC. 316 E. COLLEGE ST. IOWA CITY, IOWA 52240 (319) 351-2166 LOCATION MAP ® IOWA CITY, IOWA INC. (319)351 2166 FAX (319)351 -0256 z rn CITY OF IOWA CITY IOWA PLANS FOR PROPOSED IOWA RIVER DAM RENOVATION AND PEDESTRIAN TRUSS BRIDGE OVER THE IOWA RIVER CITY OF IOWA CITY CITY OF IOXA CITY 300'-0 ROCK -FILLED DAM & 10'-0 WIDE PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM BOW TRUSS BRIDGES PILE BENT PIERS AT SPILLWAY H-SECTION BRIDGES INDEX OF SHEETS NO. SHEET_ _ NO. SHEET PIER 2 DETAILS_ TYPICAL PIER DETAILS EAST ABUTMENT _ RIDGE_ ELEVATION AT DAM BRIDATI N AT SPILLWAY SIDEWALK RAJILING DETAILS 1 2 3 _ COVER SHEET _ GIN RA NOT AN TITI 21--PIER_2-DTAILS 22 SITUATION PLAN 23 4 5 DAM --GENERAL PLAN _ QENERAL PLAN 24 _25 _6 7 SDIL BORINGS DAM REPAIR DETAILS 26 27 8 DAM REPAIR AI 28 SIDEWALK RAJLING DETAILS 9 DAM REMOVALS 29 1 ALK_RAILING DETAILS WEST OUTLOOK RAILING DETAILS RI _ LIGHTING DETAILS WEST BRIDGE APPRQACH PLAN 10 11_ 12 AM REPAIR_ DETAILS - STEP ONE AND TWO DAM REPAIR DETAILS -STEP THREE _ANp_FQ R DAMR PAIR DETAILS - STEP FIVE X 30 31 32 13 WEST ABUTMENT GENERAL PLAN 33 34 _ EAST BRIDGE_ APPROACH PLAN BOAT RAMP AND DRIVE 14 WEST __QUTLD2_RAILIL`1G Pl 15 WEST 0 T O K DETAILS 5 AT P ETALL 16 17_ 18 WEST ABUTMENT PLAN AND ELEVATION WEST ABUTMENT DETAILS WEST ABUTMENT DETAILS PIER 1 DaLS Lk19 PIER i Puts INC. *5- STANDARD PLANS THE FOLLOWING STANDARD ROAD PLANS SHALL BE CONSIDERED APPLICABLE TO CONSTRUCTION WORK ON THIS PROJECT. (DENT. I DATE 11 ]DENT. DATE RA-43 4/30/09 cuRv TMa „6 oomsc om.vn . s wmmn er uc 1(. JqC toi�awc[r�w®n�a� wavr.�s or nc m"�a'c�a n".,ouir �xo�n 1-7 10597 .. xnsmna� om�es o®ar 31. pow 1 1M1 35 �510NAE LTA 5 - 1 1 35 -z113 ITEM ESTIMATE OF QUANTITIES GENERAL NOTES IIIL PURPOSE OF THIS PROJECT IS TO SEAL AND FORTIFY THE EXISTING DAM AND CONSTRUCT A PEDESTRIAN BRIDGE ACROSS THE DAM AND SPILLWAY. THE BRIDGE IS DESIGNED FOR 100 POUNDS PER SQUARE FOOT OF LIVE LOAD OR A 10,000 POUND VEHICLE. PROVISION IS MADE FOR 75 POUNDS PER SQUARE FOOT FOR FUTURE CONCRETE DECK. FLOW IN THE IOWA RIVER IS CONTROLLED BY THE CORALVILLE DAM 3 MILES UPSTREAM. THE CONTRACTOR SHALL BE FAMILIAR WITH THE OPERATION OF THE DAM AS IT PERTAINS TO FLOW IN THE RIVER. DAILY FLOW AND ELEVATION INFORMATION IS AVAILABLE BY CALLING 319— r HISTORICAL DATA AND SOME FORCAST INFORMATION CAN BE FOUND ON THE IN E NE L<hdp•//water.myr.usace.army.mil/>. ADDITIONAL PUBLISHED HISTORICAL. FLOW DATA IS AVAILABLE. ITEM UNIT QUANTITY TOTAL L S, 1 ID GRUBBING EXISTING BRIDGE I R. 1 F DAM AS PER PLAN DAM, L.S. 1 F BOAT RAMP AS PER PLAN L.S. 1 ,AVATIO S 10 460 CLASS 1568 0 CLASS1 CLASS 5 ORTAR I C.Y. 1 1953 WHERE PUBLIC UTILITY FIXTURES ARE SHOWN ON THE PLANS OR ENCOUNTERED WITHIN THE CONSTRUCTION AREA, IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO NOTIFY THE OWNERS OF THE UTILITIES PRIOR TO THE BEGINNING OF CONSTRUCTION. DAMAGE TO ANY URILIRES TO BE RESPONSIBILITY OF CONTRACTOR. THE CONTRACTOR SHALL AFFORD ACCESS TO THESE UTILITIES FOR NECESSARY MODIFICATIONS. STRUCTURES AND UTILITIES HAVE BEEN PLOTTED FROM AVAILABLE SURVEYS AND RECORDS, AND THEREFORE THEIR LOCATIONS MUST BE CONSIDERED APPROXIMATE ONLY. IT IS POSSIBLE THERE MAY BE OTHERS, THE EXISTENCE OF WHICH IS PRESENTLY NOT KNOWN OR SHOWN. IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE THEIR EXISTENCE AND EXACT LOCATION AND TO AVOID DAMAGE THERETO. NO CLAIMS FOR ADDITIONAL COMPENSATION WILL BE ALLOWED TO THE CONTRACTOR FOR ANY INTERFERENCE OR DELAY CAUSED BY SUCH WORK. SOUNDING AND TEST BORING DATA SHOWN ON THESE PLANS WERE ACCUMULATED FOR DESIGNING AND ESTIMATING PURPOSES. THEIR APPEARANCE ON THE PLANS DOES NOT CONSTITUTE A GUARANTEE THAT CONDITIONS OTHER THAN THOSE INDICATED WILL NOT BE ENCOUNTERED. COPIES OF BORING DATA CAN BE OBTAINED THROUGH CITY OF IOWA CITY ENGINEERING DEMPARTMENT. FIRES FOR THE DISPOSAL OF RUBISH ON THE SITE ARE EXPRESSLY PROHIBITED. NO DEMOLITION DEBRIS SHALL BE LEFT ON SITE. IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO PROVIDE WASTE AREAS OR DISPOSAL SITES FOR EXCESS MATERIAL (EXCAVATED MATERIAL OR BROKEN CONCRETE) WHICH IS NOV ALLOWED TO BE INCORPORATED INTO THE WORK INVOLVED ON THIS PROJECT. NO PAYMENT WILL BE ALLOWED FOR MATERIAL. HAULED TO THESE SITES. NO MATERIAL SHALL BE STORED OR DISPOSED OF WITHIN THE RIGHT—OF—WAY, UNLESS SPECIFICALLY STATED IN THE PLANS OR APPROVED BY THE ENGINEER. SHOP DRAWINGS AND SUBMITTALS: ALL SHOP DRAWINGS AND FALSEWORK DRAWINGS THAT REQUIRE APPROVAL SHALL BE SUBMITTED TO: NNW, INC. 316 E. COLLEGE ST. IOWA CITY, IOWA 52240 THE FOLLOWING IS A LIST OF REQUIRED SUBMITTALS: 1. DAM REPAIR ACCESS AND PROCEDURE 2. PRE —FABRICATED PEDESTRIAN BRIDGE SHOP DRAWINGS 3. PILL DRIVING EQUIPMENT DATA 4. DRAINAGE PIPE AND INTAKE MATERIALS SHOP DRAWINGS 5. GENERAL PROJECT SCHEDULE 6. BRIDGE LIGHTING 7. CHAIN LINK FENCE MATERIAL. 8. ELECTRIC CONDUIT 9. HANDRAIL SHOP DRAWINGS SPECIFICATIONS DESIGN: AASHTO, STANDARD SPECIFICATIONS FOR HIGHWAY BRIDGES, SERIES OF 1996, PLUS CURRENT INTERIM SPECIFICATIONS CONSTRUCTION: IDOT STANDARD SPECIFICATIONS FOR HIGHWAY AND BRIDGE CONSTRUCTION, SERIES OF 2001, PLUS CURRENT SUPPLEMENTAL SPECIFICATIONS AND SPECIAL PROVISIONS, IOWA DEPARTMENT OF TRANSPORTATION. DESIGN LOADING: LIVE LOAD: AASHTO (100 PSF) OR 10,000 LB VEHICLE IMPACT: NONE DESIGN STRESSES: DESIGN STRESSES FOR THE FOLLOWING MATERIALS ARE IN ACCORDANCE WITH AASHTO, STANDARD SPECIFICATIONS FOR HIGHWAY BRIDGES, SERIES OF 1996, PLUS CURRENT INTERIM SPECIFICATIONS STRUCTURAL STEEL IN ACCORDANCE WITH SECTION 10, ASTM A572W, GRADE 50, Fy=50,000 psi STRUCTURAL CONCRETE IN ACCORDANCE WITH SECTION 8.2, CLASS C, F'c=4,000 psi REINFORCING STEEL: ASTM A615, GRADE 60, Fy=60,000 psi HYDRAULIC DATA D.A. = 3200 sq. mi. SPILLWAY OVERTOPPING Q100 = 25,000 cfs ELLV. = 6bl.45 0? = 9500 cfs STAGE -DISCHARGE INFORMATION DISCHARGE STAGE ELEV. FLOW RATE (cfs) ABOVE DAM BELOW DAM Q500 656.7 655.9 40,000 Q1oo 655.2 652.6 22,500 Q50 654.5 651.3 20,000 Q10 653.0 647.5 12,000 AAn.0 ^ 655 w w 650 Q N 645 P vE 4 AM CREST 64850 _ L ol ZIELEV. 0 0 0 30 Q C"l' o ---1 02 010 O50 OS00 50 e DISCHARGE (cfs x 1000) C STAGE -DISCHARGE CURVE GENERAL NOTES and QUANTITIES IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY STATE __ _.._ i. Y YEAR NC. ovA 5 2 i5 a INTERSECTION OF FIRST AVE. &FIFTH ST. ELEVATION 657.71 INTERSECTION OF FIRST AVE. &FIFTH ST. PL. ELEVATION 657.69 1 -p►4Wgy--- � WEST ABUT --- i_z. ._z. � R 2MiR � `4 � -,_r -� )•�. . � ABUT. _ PER1BUTMENT)iCCCCCC������' CEAST DAM VBRID j L., APPROACH (1DE) / IOWA alvalt REST' V� N x '1 CORALVILLE BM k4, NE BOLT ON FIRE HYDRANT AT 200' SOUTH OF CORALVILLE BM N6; NE BOLT ON FIRE HYDRANT AT SOUTHWEST CORNER OF WIt 11 E C, ' IOWA RIVER DAI4 r CONCRETE PIERS AT DAM I PILE BENT PIERS AT SPILL CORALVILLE BM #4: NE BOLT ON FIRE HYDRANT AT 200' SOUTH OF CORALVILLE BM #6: NE BOLT ON FIRE HYDRANT AT SOUTHWEST CORNER OF --- INTERSECTION OF FIRST AVE. & FIFTH ST. ELEVATION 657.71 INTERSECTION OF FIRST AVE. do FIFTH ST. PL. ELEVATION 657.69 1 i§a J 1' l I 1 L.. }WA CITY, SET END OF C.L. BRG. W. ABUT. C.L. PIER 1 BRIDGE DECK ELEV. 660.00 BRIDGE DECK ELEV. 660.00 1 C.L. PIER 2 C.L. PIER 3 DECK ELEV. 660.00 DECK ELEV. 660.00 C.L. PIER 4 C.L. PIER 5 C.L. PIER 6 C.L. PIER 7 C.L. E. ABUT. ECK ELEV. 660.00 DECK FILEV. 660.00 ECK ELEV. 660.00 ECK ELEV. 660.00 DECK ELEV. 657.50 BRIDGE ON 148'-10 ' 148'-10 ' 78'-4" 78'-4" rRIDGE 78'-4" NEW DAM WALL 144'-1�' C.L.-C.L. BRG. 144'-1j" C.L.-C.L. BRG. I 6 PREEN GINFERED H-SE TION STEEL TRUSS BRIDGES ----- I 1:70 - _ wA Ate► I S.1 a LOW STEEL BEDROCK ELEV. t641.0 DAM CREST ELEV. 657.50 BEDROCK EXIST. FISH LADDER & ELEV. 648.5 USE DAM ABUTMENT LEV. t631.0 HP10x42 CHUTE TO BE REMOVED ELEV 654.4 FOR PIER FOUNDATION c,tewi Wa' �rwtglt OSOO ELEV. 660.0 �`�, }1 3 ®33' LONG (3' (3' FREEBOARD REO'D) ENCASED (TYP.) SEE SHEET 23 ELEVATION SCALE 1' = 40' AY d PMA22 SHEET PILE CURTAIN 1 �- WALL TIED INTO ABUTMENT 1� 11 UPSTREAM FROM DAM. TO REMAIN IN PLACE km '� 4 1 EXISTING DAM 148'-10�' 148-10J' pZ 144'-Ij' CL-CL BRG. 144'-1�' CL-CL BRG. 1� NEW 2'-0" THICK j 4 i WALL FACE 6'-6" I o V (SEE SHEET 16 6 1 78'-4' 78'-4 78'-4' 78'-4' 78'-4' FOR DETAILS) - ---- � ----o--- % 1 - ---' --- -- ;z WEST ABUTMENT XI FISH LADDER & CHUTE P R 1 PI PIE R 3 R 2 " PI 4 5 P R 6 � --- t `; PI 7 EAST�$UTM " �- - BE TO BE REMOVED (EAST DAM 294'-0' FACE -FACE DAM ABUTMENTS ABUT ENT) i, I RID APPROACH/ FIELD VERIFY (1 WIDE)SEE SHEET 33 i PLAN SCALE: 1' = 40' GENERAL PLAN IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWA CITY, IOWA n^,EF'."ST " — s1 1 5 1 35 INC. 319351-2166 I AX 319 351 0256 r ti 3 BORING B-1 LT. STA. 99+66 INq G &2 B4 �15' LT. STA. 103+115 . `t Y. LTU— SHEFTT L DAM REPAIR NOTES 14LJ JL i THE EXISTING DAM WAS BUILT IN 1922 AS A RUCK FILLED TIMBER CRIB WITH A CONCRETF SHELL. AN INVESTIGATION OF IHE INTERIOR OF THE DAM REVEALED THAT THE TIMBER HAS ROTTED AWAY. THE EXISTING ROCK FILL IS IN GOODCONDITIO ,( GONLRALLY IN CONDITION (j� THE EXISING FANDECRACKSLL IS LTHAI 3PAL S. HOWFV RN THERE ARETSOME LEAK. O[OW [HE DAM HAS A VOID UNDER THE CONCRETE CASING. THE EXISTING BRIDGE PIERS WLRL ADDED SEVERAL YFARS AFTER THE DAM WAS BUIIT AND ARE DOWELED TO THE SHELL BUT DO NOT PENETRATE IT. ]HE TYPICAL CROSS SECTION SHOWN ON THIS SHELI WAS TAKEN FROM LIMITED EXISTING PLANS. PHOTOS ON THIS SHEET SHOW THE CONDITION OF THE INTERIOR OF THE DAM AI IRE TIME OF THE INSPECTION. [HE REPAIR OF THE DAM WILL INCLUDE BUT NOT LIMITED TO THE FOLLOWING: FILLING THE VOIDS IN THE EXISTING ROCK FILL WITH FLOWABLE MORTAR. FILLING THE VOID BETWEEN THE ROCK FILL AND THE EXISTING CONCRETE SHELL WITH HIGH SLUMP CONCRETE. BUILDING A NEW FACE ON THE DAM TO SEAL THE EXISTING CONCRETE SHELL. THE CONTRACTOR MAY ACCESS THE DAM BY: 1) IHE EXISTING BRIDGE. THE CONTRACTOR SHALL DETERMINE [HE CAPACITY AND SAFFIY OF THE EXISTING BRIDGE PRIOR 10 ANY USE. THE CONTRACTOR MAY AT HIS/HER COST REPAIR OR STRENGTHEN THE EXISTING BRIDGE. THE CITY ASSUMES NO RESPONSIBILITY OR LIABILITY FOR THE EXISTING BRIDGE OR ITS USE ON THIS PROJECT. 2) A TEMPORARY ROADWAY ON THE DOWNSTREAM SIDE (SEE TEMPORARY ROADWAY DETAIL FOR FILL AND ARMORING REQUIREMENTS). 3) A BARGE LAUNCHED FROM THE EAST BANK 4) SOME COMBINATION OF THE ABOVE. THE DAM MAY NOT BE ACCESSED BY THE PRIVATE PARKING LOT ON WEST SIDE FXCEPT BY WRITILN PERMISSION BY THE OWNER. THE CONTRACTOR SHALL SUBMIT A COPY OF ANY SUCH PERMISSION TO THE ENGINEER. A METHOD FOR ACCESSING AND ACCOMPLISHING THE DAM REPAIR IS SHOWN ON SHEETS 10. 11, AND 12 AND MAY BE USED AS A GENERAL CONCEPT. THE CONTRACTOR MAY PROPOSF ANOTHER METHOD. THE FINAI SYSTEM USED SHALL BE APPROVED BY THE ENGINEER. THE CONTRACTOR SHALL SUBMIT 6 COPIES OF PLANS AND CALCULATIONS FOR THE PROPOSED ACCESS MLTHOD TO THE ENGINEER FOR CHECKING AND REVIEW. THE ENGINEER WILL HE ALLOWED 30 CALENDAR DAYS IN WHICH TO REVIEW WORK PLANS. REVISED PLANS MAY BE EXISTING RFOUIRFD BY THE ENGINEER LATER BECAUSE OF UNFORESEEN SITE CONDITIONS, PIER BRIDGE UNUSUAL CONSTRUCTION PROCEDURES OR DEVIATION FROM ORIGINAL ACCESS )VF D PI ANS. SLC I ION 1105.03 OF THE IDOT STANDARD SPECIFICATIONS SHALL APPLY. ALL STRUCTURAI PORTIONS OF THE ACCESS SYSTFM SHALL OL r i DESIGNED AND CERTIFIED BY AN ENGINEER LICENSED IN THE STATE OF IOWA. THE EAST ABUTMENT SHAIL. BE RL13UILI AS SHOWN ON SHFET 24. THE WEST ABUTMENT SHALL BE REPAIRED AND FORTIFIED AS SHOWN ON SHFFTS 13 THRU 18. THE EXISTING PIERS SHALL BE REMOVED AS SHOWN ON SHEET 9 AND 12. A NEW PEDESTRIAN BRIDGE WILL BE BUILT OVER THE EXISTING DAM. THE DETAILS OF THE NEW BRIDGF ARE SHOWN ON SHEETS 25 AND 26. PHOTOGRAPHS ONLY REPRESENT SPECIFIC INSTANCES, ACTUAL CONDITIONS MAY DIFFER FORM THOSE SHOWN. DAM REPAIR DETAILS DAM LOOKNG WEST IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY PROJECT NUMBER $TOTE R NO. IOVA 5 7 35 01 -`, 3: 13 t z� IOWA t q PIER REINFORCING BAR LIST BAR LOCATION SHAPE LENGTH NO. WEIGHT 8 SP 0 1'- 0 = 8'-0" So 1 Face horizontal 28 -0 192 14,336 °o v 7b1 Face vertical : .; :6 !� " p r 'o 8d1 Dowels 2 -0 150 801 1-6 2 1 - Dowels - 1 i o {{ r }i _ _ 0 0 o I - M 7u1 Lower Hoops 16 -8 . _, 2 '- 4 - 10 H. Weight Total (Ibs) BENT BAR DETAILS Hd,- I'""{;.P''•. 8 2 (SP. ® 24" o.c.) - 8d1 �F ( P.) MIN 6" EMBED. EPDXY \ ? 10 . I 0 i O 0 6� � o �7. - o I `Y 4/t� � ,,✓��• I_ I Note: All dimensions are out to out ESTIMATE OF QUANTITIES q�,.}� �I' - I .. e•' �✓ to A" ITEM UNIT QUANTITY #/�r`IM'' b ( CONCRETE STRUCTURAL g 3 272 STEEL REINFORCING EPDXY COATED I . 1 3'-0 A�J FLOWABLE MORTAR 286 N coNc E PROPOSED DAM FACE DETAILS T M ILL SCALE: DAM REPAIR NOTES ALL EXPOSED CORNERS 90 DEGREES AND SMALLER ARE TO BE FILLETED WITH A 3/4' DRESSED AND BEVELED STRIP. PIER MINIMUM CLEAR DISTANCE FROM FACE OF CONCRETE TO NEAR REINFORCING BAR TO BE 2' UNLESS OTHERWISE NOTED OR SHOWN. -EXISTING PIER t°d`y Spa✓` \i k� ZA47 ALL REINFORCING STEEL TO BE ASTM A615-GR60 EXCEPT CAP L+'r~ STIRRUPS MAY BE ASTM A615-GR40. I/•�'R,,•1 8a1 j IF EXISTING PIER IS LEFT IN 7b1 I DAM CREST PLACE UNTIL AFTER THE NEW ALL REINFORCING STEEL IS TO HE SECURELY WIRED IN PLACE FACE OF DAM IS INSTALLED -6" i BEFORE CONCRETE IS POURED. POCKET OUT 2" DEEP TO P ALL POUR BREAKS SHALL HAVE A 2X4 KEYWAY AND REBAR EXTENDING A I// / ALLOW FOR PIER RFMOVAI- MINIMUM OF 2' -0 INTO NEXT POUR. AND SMOOTH PATCHING. K t CONSTRUCTION JOINT �e r P b pay DAM REPAIR DETAILS IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE T CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY 6 7u1 OVER THE IOWA RIVER P. CITY OF IOWA CITY CROSS SECTIONELEVATION SCALE: 1 a'=1' PROJECT NUMBER STATE NO. IOWA CITY, IOWA MA 5 s 1 35 319 351-2168 FAX :319 351 -025ti 3• 13 PH 3: 13 E 0 I'VA REMOVF EXISTING CONCRETE PIECL5. PILCL S MAY BE BROKEN INTO SMALLER PIECLS AND DISPOSED OF AS RIP RAP. WEST END OF DAM - UPSTREAM EAST END OF DAM - DOWNSTREAM LOOKING WEST LOOKING NORTH DAM REMOVALS IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWACITY, IOWA PIDJECT NUMBER ST- 'y"E,gL M9, 35 INC. 2166 I'AX (319),VA -O',l, ! E R r Y 0 W , i R 10 vIV 30 PM 3: 13: v i CLERK C I T Y. ICEOVA 714?5 of -------- -- -D NOTE: SEE SHEET 17 FOR SECTIONS ------------- ---------- EXI AB END OF BRIDGE - — - — - — - — - — - A* STA. 100f00 EXISTING NEW STEEL CURB LINE cn SHEET PILE PZ27 NEW WALL FACE BRI CANTILEVERED LOOKOUT f 481-1 BRI GE DAM 32 ol 5'—I0J' (SEE SHEET 13) 4 ABUTMENT PLAN SCALE- fl'=l' WEST ABUTMENT GENERAL PLAN IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWA CITY, IOWA IKC, (319)351-2166 FAX (319)351-0256 10V^ 51 1 13 1 35 P 1�1 n 3: 13 . , L F IR1 K r Y, 10 W'A lo•-o• la'-2• ______�__ lo•-o• lo'-o• SIDEWALK RAIL QUANTITIES ITEM UNIT QUANTITY 15'-6' I 4' HANDRAIL - 4'-6' HIGH LIN. FT. 136 v 12'-10' 1-4' HANDRAIL - 3'-6' HIGH LIN. FT. 30 _ t 2,_6, L �> P C°NCRlTE ~ rYP. -0• RAIL NOTES 1�75 .�' SEE SHEET 27 FOR RAIL NOTES. ' 660.30 660.30 CURB I 4-6' ' V660.22 V660.22 660.00 HAN AIL 658.17 - p.- �4• i - - - - f- - _ - - - - - -- -- - - RAMP o 657,25 �' I 660.00 657.15 ---4 1 i I - -654.44 Hill 11111111 - - -' - - - _ -_ _ __ __ - W.P. PH 3- 13 LERK �f it {('�iY1�j G: i Q. �I WALL TOV E WALL CL WALL TO E WALL BRICp I I LEDGE ICK T.O. LEDGE II T.OWALL ----- T.O. WALL 626-0' 660.22 WALL 658.76 1 W.P. , ` WALL 65 \ Zo � � - 65723 STA 100+00 O FOUNDATION PLAN AT WEST OUTLOOK SCALE- 1' = 1-0' SCALE - -- 3/16' = 1'-0' WALL CROSS SECTION - "A" try r. 1• . -V-0. 705 JUN 3 G1T"T' GL IOWA CT . WEST OUTLOOK DETAILS IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY �a 0 1u3:l3 RI1 IMNA P. ' : � *�'p,, �. k g 4, 'S«f� 4 WEST OUTLOOK SLAB REINFORCING BAR LIST lE'—o• 8'- BAR LOCATION SHAPE LENGTH NO. WEIGHT 5'-0' M.I. 5'-- - 3'-0' '-0- �1p,,1�15 ` 7w2 WEST ABUTMENT LANDING 11'-8 178 4 246 4' 521' 4' 7w3 WEST ABUTMENT LANDING 35'-1 1611 7w4 WEST ABUTMENT LANDING13'-2 8 215 7w5 WEST ABUTMENT LANDING 14'- 816 7n1 7w6 WEST ABUTMENT LANDIN l 4'- 26 1 51 6k2 6n2 7w7 WEST ABUTMENT LANDING 7'- 26 91 7ro1 7w8 WEST ABUTMENT LANDING '-9 7n1 #5n2 ,1 5 1 I BARRIER CURB L BAR --j 6-3 254 1,656 5 2 BARRIER CURB LONGITUDINAL 40-0 36 1,502 —__ 6k1 7n1 #5n2 a 8z1 WEST ABUTMENT LOOKOUTS (CUT IN FIELD) 1-3 72 4.085 �i 4 > 8z2 WEST ABUTMENT LOOKOUTS (CUT IN FIELD) 11'-8 44 1,371 N EXIST 7n1 TOP OF EXIST. 27 ue WALL w W U OC ABUTMENT f\ WEST OUTLOOK FOOTING REINFORCING BAR LIST w 0 j In EXIST WALL 6k1 DOWELS J - 6k1 6k2 DOWELS 1'-0 40 EMBED 6' W / ^ 2 -0� TOP OF DAM — 7n1 RIVER WALL HORIZONTAL (CUT IN FIELD) 40'-0 28 2,289 s EPDXY 7n1 RIVER WALL VERTICAL (CUT IN FIELD) 40'-0 20 1635 BASE OF - 5s1 CAP HOOPS 482 - i FISH LADDER SEE SHEET 14 FOR DETAILS 5n2 FOOTING WALL HORIZONTAL (CUT IN FIELD) 40-0 46 1919 5n2 FOOTING WALL VERTICAL (CUT IN FIELD) 40-0 39 1627 TOTAL WEIGHT (LBS) 8,612 SECTION B s SEC' ION A 4;_0 SCALE- #'=1' 3'_0 SCALE J'=1' \ '9 7O 2° 9 5y 1 5s1 7w6 aN 61<1 7w7 7w8 BENT BAR DETAILS 1'D---.� �z Note. At. dimensions are out to out ESTIMATE OF QUANTITIES ITEM I UNIT I QUANTITY CONCRETE, TRUCTU - 1S' Ssl 2 TEEL R INF RCING EPDXY COAT L MR! 12' O.C. CLASS 201 EXOCAVATION L 170 V' 9' 07lnl ABUTMENT NOTES ALL EXPOSED CORNERS 90 DEGREES AND SMALLER ARE TO BE LLETED WITH A 3/4' DRESSED AND BEVELED STRIP. n > n MINIMUM CLEAR DISTANCE FROM FACE OF CONCRETE T❑ NEAR J#5na REINFORCING BAR TO BE 2' UNLESS OTHERWISE NOTED OR SHOWN. #5n2 NEW STEEL - #Sn2 SHEETING PZ27 ti ' �, #5n2 ALL REINFORCING STEEL TO BE ASTM A615-GR60 EXCEPT CAP v STIRRUPS MAY BE ASTM A615-GR40. 2-0, - ALL REINFORCING STEEL IS TO BE SECURELY WIRED IN PLACE BEFORE CONCRETE IS POURED. TOP OF DAM i ESTIMATED SHEET PILE LENGTH IS 20 FEET. SECTION C SECTION D SECTION E WEST ABUTMENT DETAILS SCALEt J'=1' SCALE: }'=1' SCALE: ;'=I' IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWACITY, IOWA PROJECT IWR STATE 1IOWA 1 5 1 17 1 35 319 3fil 2166 FAX 319 351-02.56 115 JUN 30 PI 3: � �..t Y �k i 7 -9' BASE DETAIL [ES (NOT INCLUDED IN THIS PROJECT) FLOOR LANDING ELEV. 660.22 GRADE I -5 UTMENT DETAILS i DAM RENOVATION AN TRUSS BRIDGE 1M PILE BENT PIERS AT SPILLWAY "HE IOWA RIVER OF IOWA CITY STATE Y AR H0.11 o�A 5 18 35 0 1 p 41'-0" 1., BRIDGE 1. PIER FACE OF EXIST. DAM 17'-0" -- 4 1 r ---------- C! I L E 8h4 a_ Bvl 8h2l j W:8 /h ;1EM �B 2T Typ 8vi F-7 ul A�- 6b3 � EA a��'h3 SCALE- IOWA RIVER DAM RENOVATION SCALE: PEDESTRIAN TRUSS BRIDGE PLAN OF TOP OF PIER 1/4"= 1' CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY " 4� � . : Y° _``^ C L E R -�,, v 'IT 41'-0" BRIDGE PIER FACE OF EXIST. DAM 4 . -6- I 9'-10 g.-g. D-L 00 ELEV,�o r8h1 I 8h1 8h4 - 1 1 1 IT I I III 0 0- -1 1 di i i h 1 11 —44 ic u" — I 0 8h3 1B .1 . . . . . . on o 8h3 Bhl Bhl 1A EXISTING WALL SECTION A END OF DAM h2 Bh2i•y 31'r-o" JtAf ti"A FIT, A) 4'- 0. 7'-0" 23 Lo. 1710" 4'-0" 7 -0" 8hl w/ MBED. w/ MBED XY GROUT AND - XY GROUT — (" �flcf;.� 'Js- 0 j'd'od� Typ TYP. 8v2 0 �01 0 co I 0 8,v2 PIER, ELEVATION -8h3 4 V 0"- 18h I 9" 91 -9" 9'-0" 8h3 I SECTION B 4 5" 7al �—q spol'-0=9,-O" 7a1 II 0-7o3 7a2 23' 4'-0" 7a2 I 4'-0" V I -0- i 5o4 01 (n 5s2 : 0 -4 C, 0 0 o 0 I I I I I t 1 11 I 6b2 1.-t H H 6b3 md ol Z8h4 10 5 8113 I T 6bl- I SECTION C PIER 2 DETAILS IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE PLAN OF TOP OF PIER SENT CONCRETE PIERS AT DAM PILE SENT PIERS AT SPILLWAY OVER THE IOWA CITY OF IOWA CITY IOWA CITY, IOWA PRM= WAI" 7 I IMA 5 2-1 INC. (319)351-2 0256 F-- 0 PH 3. 1 1-112 C L E [-� TY, la, PIER bt b2 N m 3" 3/4" URIP 7a3 GROOVE ALL tOh AROUND 5sl 5s2 10h5 w Q 8dl- SECTION E rKEYWAY FORMED BEVELED 2x6 AL I AROUND 1 -- 8v 1 0 TOP OF ROCK BENT BAR DETAILS PIER 2 REINFORCING BAR LIST b54 LOCATION SHAPE LENGTH NO. WEIGHT �~ TOP OF SLAB -RADIAL ---- 7 -9 28 44 . 'r.. TOP OF SLAB - RADIAL 5 -9 26 t D=6 R C TOP OF SLAB - TRANVERSE 17 -8 11 397 o :7-9 14 11 TOP OF SLAB - TRANSVERSE 9'-0 12 1 . 18'-18hl R 6b� TOP OF SLAB - LONG6bl TOP OF SLAB ITUDINAL VARIES 5 �t-71_ 21 -3 rr, , U t 24'-4 6b3 TOP OF SLAB - CIRCUMFRENTIAL VARIES 5 16 27'-6 8d1 DOWELS TO EXISTING DAM 3 -0 20 160 4'-6 8h2 l SHAFT HOCPS n 38 -6 18 1850 8h3 g SHAFT HOOPS C 20 -9 4 9 8h3SHAFT HOOPS C 30 -9 9 739 6" 8h4 4 I SHAFT HOOPS C 12'-9 2 68 PIER CAP 28 -0 14 1687 8h2 4 R -g 14 C-11 5sl STIRRUPS O 74-6 28 423 I 8h3 C6b STIRRUPS �� 11'-8 56 681 8h4 CO)6-9 21 -3 STIRRUPS 9 -0 12 545 7'-9 24'-4 8'-9 27'-6 8v1 SHAFT VERTICAL 27 -0 46 3316 8v2 SHAFT VERTICAL 5 -2 48 662 B 7•-8 o�N 5s2 o 5S 1 _L.5'-0 -I Weight Total (Ibs) 12.253 TESTI5s3 MATE OF QUANTITIES ITEM UNIT QUANTITY CONCRETE,STRUCTURAL .Y. 181.1 STEEL REINFORCING EPDXY COATED L 1•-9 5'-0 EX AVATION C S 21 C.Y. 34 o� I 5a4 Note: All dimensions are out to out N PIER PIER NOTES ALL EXPOSED CORNERS 90 DEGREES AND SMALLER ARE TO BE 9'-0" 9•-0" ----- FILLETED WITH A 3/4' DRESSED AND BEVELED STRIP. z o MINIMUM CLEAR DISTANCE FROM FACE OF CONCRETE TO NEAR ry KEYWAY FORMED Y REINFORCING BAR TO BE 2' UNLESS OTHERWISE NOTED OR SHOWN. bl b2 BEVELED 2x6 ALL AROUND ALL REINFORCING STEEL TO BE ASTM A615-GR60 EXCEPT CAP i STIRRUPS MAY BE ALL REINFORCING ASTM A615-GR40, STEEL IS TO BE SECURELY WIRED IN PLACE 3" rn BEFORE CONCRETE IS POURED. 3/4" RIP 7a3 GROOVE ALL Z'OhS 5s2 Zo THE DESIGN BEARING FOR THE PIER PILES IS 55 TONS. BATTER ISor7stdE ACES v AROUND "T 8v2 i P}iti•'" oP4`tE��l ^ Ssi sh 1 (i ►�" r N 5s2 N� --_--------- 10h \_ ;+(1/ k, EF\aJ 1 •-9 6 SP® =4•-6 7 •-9 au " +• PIER 2 DETAILS I __: 9 4'-0" 4•-0" IOWA RIVER DAM RENOVATION & 6 ° - PRE-ENGINEERED PEDESTRIAN - TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY SECTION D OVER THE IOWA RIVER CITY OF IOWA CITY PRp1ECf NUMBER SAT[ 51 1 22 1 35 REINFORCING BAR LIST — ONE PIER BAR LOCATION SHAPE LENGTH NO. WEIGHT 4al Column Verticals 6'-8 12 2043 1 !1 �, RI 3a2 Column Spirals 0 8bl Pile Cap, Horizontal 13 -8 7 255 5b2 Pier Pile Cap. Hoops 10 1221 f lz" 3n2 t, 5b2 8b1 SEE ABUT �,_p� DETAIL Ij�— Sb2 ✓ I 4n1 o r e 12'O,C. _L :µ Bbl M Weight T tat Clbs) 496 ENCASED PILE SECTION q�yb BENT BAR DETAILS SCALE: J'=l' PIER CAP ELEVATION PIER CAP SECTION D SCALE: J'=1' SCALE: J'=1' a :01D Note: All dimensions are out to out ESTIMATE OF QUANTITIES — ONE PIER ITEM UNIT QUANTITY CONCRETE STRUCTURAL 4.7 STEEL REINFORCING EPDXY COATED L PILING FURNISH STEEL BEARING HP10x42 L.F. 90 L N L BLARING H 10x4 EXCAVATION CLASS 20 Y a PILING CONCRETE ENCASEMENT SEE DOT STANDARD P10Acz o PIER NOTES w_ a �~ h- +/--I 78'-4 H-SECTION ALL EXPOSED CORNERS 90 DEGREES AND SMALLER ARE TO BE PRE-ENGINEERED FILLETED WITH A 3/4' DRESSED AND BEVELED STRIP. 1'-6' S'-6' S'-6' 1'-6, STEEL TRUSS MINIMUM CLEAR DISTANCE FROM FACE OF CONCRETE TO NEAR i CONCRETE REINFORCING BAR TO BE 2' UNLESS OTHERWISE NOTED OR SHOWN. n ti /G j 4' QALV. STEEL PIPE SLEEVE t„l a,,,. 11 ,,, {,r) 10' 0' '� i PILE CAP 14'x3'x3' ALL REINFORCING STEEL TO BE ASTM A615-GR60 EXCEPT CAP STIRRUPS MAY BE ASTM A615-GR40. TOP OF PIER r+• ELEV. 657.00 +1v�'^7I1r ALL REINFORCING STEEL IS TO BE SECURELY WIRED IN PLACE n >_ PksB^,I° r� BEFORE CONCRETE IS POURED. v 14' 0' 3a2 @ 6' PITCH EXISTING GROUND LINE THE DESIGN BEARING FOR THE PIER PILES IS 35 TONS. BATTER PLIES HP10X42 6 TO I IN DIRECTION SHOWN. 4n1 BAR ELEV._650.00 a SLOPE TO DRAIN ESTIMATED PILE LENGTH IS 30 FEET. 6:1 BATTER - v I PIER CAP PLAN HP10X42 SCALE: }'=1' ENCASED PIER ELEVATION FYP.) TYPICAL PIER DETAILS SCALE. �'-l' IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWA IOoWA , DISTS � .EAR A ®INC. aSlAtbbCITY, �o�A a3 PH 1 3: 1 LI ER1-1 1 ttr•;tt a, ;. IU tFA Pr 3: t 3 Y. i,, a;. C.L. BRG. W. ABUT. STA. 100+00 EV. 660.00 C.L. PIER 1 STA. 101+47.75 EV. 660.00 C.L. PIER 2 ��L1 + BRIDGE DECK ELEV. 660.00 148-10�' SET END OF BRIDGE ON NEW DAM WALL 144-1�' C.L.-C.L. BRG. 6• 144-1�' C.L.-C.L. BRG. 0500 ELEV. 660.0 -- DAM CREST ELEV. 648.5 LOW STEEL ELEV. 657.50 LOW STEEL ELEV. 657.5 BEDROCK ELEV. t641.0 EXIST. FISH LADDER & CHUTE TO BE REMOVED O50 ELEV 654.4 (3' FREEBOARD REO'D) USE DAM ABUTMENT FOR PIER FOUNDATION (SEE PAGE 9) BRIDGE ELEVATION SCALE: BRIDGE ELEVATION AT DAM IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWACITY, IOWA INC. 319 a51 2166 FAX 719 351-0256 PROJECT NUMBER STATE r AR 'H3EE5Ts IOVR 5 25 BRIDGE DECK IL MATCH A MATCH 8 ? f C.L. PIER 2 C.L. PIER 3 C.L. PIER 4 C.L. PIER 5 C.L. PIER 6 DECK ELL1/. 660.00 DECK ELEV. 660.00 DECK 60.00 DECK L 60.00 ELEV. 60.00 80-10' 78'-4'(END TO END) 78'-4'(END TO END) 78'-4' (END TO END) 78'-4' (EN STA. 103+01.92 76'-4' L BRG. �oc�' •ti 54•'` 4 PRE-ENGINEERED H-SECTION STEEL TRUSS BRIDGES 10' o. 3'-9 1/4' 8 3/4' 6'-0' SPILLWAY AREA I I I hi 1,�'4.•.r �IE NEW PIER TO EXIST. AM ABUTMENT ELEVATION -1 I I —I I i—I I � '�����' BEDROCK SCALE: A"=1' HP10x42 I I ELEV. t631.0 -� 3 ® DS' LONG ►'�+lr •"•'•F` ENCAS IDECK TDECK M. ! • Ir s ,,;TT SIDEWALK RAIL QUANTITIES ITEM UNIT QUANTITY HANDRAIL ON LOOKOUTS LIN. FT. 152 7175 M 3 RAIL NOTES MATERIAL FOR THE RAILING BARS AND PLATES DESIGNATED WEATHERING STEEL SHALL BE WEATHERING STEEL ASTM A588, GRAD 1`y sip 50W. MATERIAL FOR THE RAILING BARS AND PLATES DESIGNATED S.S.SHf�W ' C! 3'0 STAINLESS BE 18-8M, TYPE 316, STAINLESS STEEL MEETING THE REQUIREMENTS OF 2 STEEL PIPE STM A'P76. WELDING OF STAINLESS STEEL SHALL USE THE METALLIC 28 ARC METHOD. STAINLESS STEEL SHALL RECEIVE A LIGHT SAND BLAST lY2'0 STAINLESS FINISH. THE CONTACTOR SHALL SUBMIT A SAMPLE OF THE FINISH, TO THE ENGINEER, FOR APPROVAL PRIOR TO FINISHING RAILING. STEEL PIPE FINISHED STEEL SHALL BE FREE OF BURRS AND SHARP EDGES. RAIL POSTS SHALL BE SET PERPENDICULAR TO THE BRIDGE DECK IN THE LONGITUDINAL DIRECTION AND PLUMB IN THE LATERAL DIRECTION. USE STAINLESS STEEL SHIMS TO ACHIEVE THIS GEOMETRY. RAIL PANELS SHALL BE PARALLEL TO THE DECK. I ANCHOR BOLTS SHALL BE TYPE 304 STAINLESS STEEL THREADED ROD WITH STAINLESS STEEL NUTS AND WASHERS. ANCHORS SHALL BE SET IN DRILLED HOLES USING EPDXY GROUT MEETING THE REQUIREMENTS OF L 2'0 STAINLESS IDOT MATERIALS I.M. 491.11. (n f� STEEL BARS SHOP DRAWINGS SHALL BE SUBMITTED TO AND REVIEWED BY THE `n F/// ENGINEER PRIOR TO BEGINNING FABRICATION OF THE RAILING. 1 ! THE HANDRAIL SHALL BE BID ON A PER FOOT BASIS MEASURED END v 1 TO END OF RAIL. THE PRICE BID, PER FOOT, FOR 'STEEL HANDRAIL- 1 SHALL BE FULL COMPENSATION FOR FURNISHING ALL MATERIAL 7 INCLUDING ANCHOR BOLTS, SHIMS, AND ALL OF THE EQUIPMENT AND t LABOR REQUIRED TO FABRICATE AND ERECT THE RAIL IN ACCORDANCE 1 WITH THESE PLANS AND SPECIFICATIONS. SIDEWALK RAILING ELEVATION (NO CAP) AT LOOKOUT AREA SCALE: 1' = 1-0' 9'-0' STAINLESS STEEL POST CAP 3'0 STAINLESS SAr4r� q�vvf�l.' STEEL PIPE y,04 3 2R IY2'0 STAINLESS STEEL PIPC 4 (4) 110 IYz• - I ti HOLES (TYP) 2i2' 0 0 DRAIL- F STAINLESS STEEL W/ CAPS I IIASE I'L 6x9xY2 PIER III I 3'4'0 STAINLESS STEEL BARS w/ (4) 3/4'0 S.S. ANCHOR BOLTS BASE t DETAIL 1 SCALES 1 1/2' = 1'-0' 27 \ / 7 i SIDEWALK RAILING DETAILS SIDEWALK RAILING ELEVATION IOWA RIVER DAM RENOVATION ,5,„A• «yP' (w/ CAP) AT LOOKOUT AREA PEDESTRIAN TRUSS BRIDGE SCALE: -- 1' = 1'-0' CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER I' CITY OF IOWA CITY PROJECT MMBER JTP-V-0777(I5)--70-27 YERRSHEM MWA 5 1 27 135 r 3: E R 310 S.S. PIPE-\ (GRIND WELD VIEW 8 A 4' HANDRAIL S.S. POST CAP FLUSH & SMOOTH) A 4' Iye-0 S.S. PIPE IY210 S.S. PIPE HANDRAIL HANDRAIL B J_ I (SEE CAP R� DETAIL) 1 4 4 11 3'0 S - S PIPE HA S.S. (w/ END CAP) (TYP) (T yp) 4 4 .0 %'o ss. F 4x2KA S.S. 9S6ELIF-TAPPING ROLLED %'o S.S. I SELF -TAPPING FE 4x4x�6 S.S. ROLLED w/ 121.' RAD. SECTION A -A IL il- wl SCREWS w/ WASHER %' SCREWS w/ WASHER 4 1? 4x4x)fi S.S. --- RAD. 1 YV 41• ROLLED w/ 1304' RAD. A ^7 I S.S. 3�xIY2 BENT It SECTION A -A HANDRAIL SUPPORT DETAIL Vo S.S. 4SCALE- 3' 1' -0- Y2x2Y2xl)6 S.S. SELF -TAPPING HANDRAIL SUPPORT DETAIL GUSSET SCREWS w/ WASHER VIEW A SCALE: 3' = 1'-0' \I28 HANDRAIL SUPPORT DETAIL SCALE: 3' = 11-0. 28 2- Y2.' 4x4x36 S.S. ROLLED wl I:Y4' RAD. CTRD. 4 Y8' 1 2. 4 Y2' Ft 4x2Y4xY8 S.S. ROLLED w/ 7fi' RAD. 4%' It 4x2Y4xYa S.S. 2 y 4X� Lx L E ROLLED w/ 36' RAD. ROLLED D 17— wNnTr A COMMERCIAL STAINLESS STEEL 4 S.S. POST CAP DETAIL MOORING CLEAT MAY BE USED IN LEIU OF THE FABRICATED CLEAT o SCALE: 6' 11-0. SHOWN, UPON SUBMITTED REVIEW & APPROVAL OF SUCH CLEAT. cu I 4 m CUT FROM S.S. fL 3'4x6 m cu m CUT FROM S.S. IL 3/4x6 3h6' �s�z) STANCHION DETAIL LOOKOUT AREA —NO CAP SCALE: 1 112' = 1-0, STANCHION DETAIL LOOKOUT AREA—w/ CAP SCALE, 1 112' = 1-0, SIDEWALK RAILING DETAILS IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE SENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY IOWA CITY IOWA 1�1-�NC.�M� STP-U-0977(15)--70-29 STATE — I YE�� IOWA 5 FAX (3'19)351 0256 30 PM 3: 13 C I ��k C i T Y, f - I I VERTICAL TRUSS MEMBER 7 STEELEPIPFRING 4' HANDRAIL QUANTITIES SEE SHEET 14 I I I ti %-0 SELF -TAPPING SCREWS w/ WASHER c WEATHERING STEEL \ Y2'xl BENT le\i MTRUSS EMBER VERTICAL I TRUSS TOP CHORD I i 1 j o -- I -- VIEW aHANDRAIL I 1 r' EXPANSION JOINTS 1 I I I 3' 0 WEATHERING I I I STEEL PIPE 4 I 4 I y I 3 —(�_ 9 I R %'x2)6' WEATHERING STEEL I' A STAINLESS STEAL PIPE HANDRAIL �� (SPACING TO MATCH - 111' 0 STAINLESS VERTICAL TRUSS MEMBER) - - -- —I i 9 STEEL PIPE WEATHERING STEEL 32'xlY2' BENT W_ - :Y, 0 WEATHERING (TYP)ZI II�---_ STEEL BAR n _ _...--" B (TYP) --_- dl - - 1 %-0 STAINLESS STEAL SELF-TAPPIP JI. SCREWS w/ WASHER (TYP) cn r1 ..l_ -_ _. - (TYP) q - A VIEW A '4'xiw' WEATHERING STEEL - -- - ED w/ 1iY RAD. --- - i WOOD PLANKING HANDRAIL SUPPORT DETAIL 1 (TYP) SCALE 3' = 1'-0' 29 4RD (TYP) a 4 (TYP) _ 10'-0' FACE to FACE 1t 2'x3Sa'x WEATHERING STEEL (TYP) 1 'TRUSS BOTTOM 2 RUB RAIL - v CHORD 2�' SIDEWALK RAILING ELEVATION BRIDGE TRUSS 2. 3' 0 WEATHERING (AT TRUSS FIELD JOINT) STEEL PIPE (T&B) 1L WEATHERING SCALE 3/4' = 1'-0' II STEEL RROOLLED w/ RAD. 3'0 WEATHERING i 9 STEEL PIPE g 1'0 STAINLESS 1 STEEL PIPE g lY2' 0 STAINLESS STEEL PIPE a` `� in m f� %'x2Y,' WEATHERING STEEL t—r _ $ 0 BAR WEATHERING STEEL -L- -J �- - -- 4,'0 WEATHERING STEEL BAR 'v m 1 2' N 1 iD - 2i¢'x%' WEATHERING 4 1 tea_ �z 2i�Z'0 WEATHERING 1'0 STAINLESS STEEL BAR m ih d (TYP) STEEL PIPE, 4' LONG (TYP) STEEL PIPE, 4' LONG =au SIM. l 9 WOOD PLANKING HANDRAIL SPLICE DETAIL z HANDRAIL SPLICE DETAIL -- SCALE: 3' = 1'-0' 29 SCALE: 3' = 1'-0' 29 STANCHION DETAIL AT MAIN TRUSSES 1'0 WEATHERING � STEEL PIPE, 3' LONG $ L- SCALE: 1 1/2' = 1'-0' SIDEWALK RAILING ON BRIDGE ELEVATION SCALE: 3/4' = 1'-0' SIDEWALK RAILING DETAILS 34'0 RING ly' IOWA RIVER DAM RENOVATION STEFt. BAR (TYP) I. BAR PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY GUARDRAIL SPLICE DETAIL OVER THE IOWA RIVER SCALE: 6' - 1'-0• 29 CITY OF IOWA CITY IOWA CITY, IOWA "T """"R STATEnisT ID�w 6 29 35 C. 319 351-2166 FAX 310 351-0256 STP-U-0977(15)--70-29 0 P11 3: I �► TY; It V 7 3'0 HANDRAIL SS SEE DETAIL 'C' If4x4xj S.S. 4 C4) 1'0 lip' HOLES (TYP) IS¢'0 STEEL STAINLESS PIPE 1 8 ROLLED W/ Ij' RAD. ® ® CENTERED (TYP.) lj'0 HANDRAIL SS STAINLESS STEEL 6' L -. - - - I'L 4x2jxj S.S. BASE FL 6x9xY2 w/ (4) 9'0 ANCHOR 1 Y2' 1'0 STAINLESS ROLLED W/ j' RAD. BOLTS BASE f� DETAIL A (TYP) STEEL PIPE, 4' LDNG 2Y2' SEE DETAIL 'B' SCALE: 1 1/2' 1•-0' HANDRAIL SPLICE DETAIL iO b e SCALE 3' = 1'-0' I 1 It �x2� SS (n I �vI m ' a 3'0 STAINLESS STEEL PIPE I fu I 8 �� 0 BAR SS L-3x2xi S.S FOOT REST -r- -�---� 4-i'O SS CONC. ANCH. —s I 8' LONG, 6' EMBED. CONCRETE RAMP. SEE PLAN VIEW FOR SLOPE (SHEET 14) S S (TYP) INL4E STEEL P LONG SEE DETAIL 'A' HANDRAIL SPLICE DETAIL 7 SCALE- 3' = 1'-0' GUARDRAIL DETAIL @ BIKE TRAIL SCALE 1 1/2' = 1'-0' B 1'0 SS PIPE, 3' LONG ly4 t�• 3.0 SS BAR (TYP) GUARDRAIL SPLICE DETAIL VIEW E SCALE, 6' D 4' IY2'0 S.S. HANDRAIL PIPE IY,'A S.S. PIPE r HANDRAIL F - - - - - - — E /1 4 T 3'0 S.S. PIPL - _I 4 F 4' HANDRAIL D 11 %'0 S.S. SELF -TAPPING SCREWS w/ IC 4x2Y4x)6 S.S. I ROLLED w/ WASHER %' RAD. -- -- -- - - 1�' 2' S.S. Y2x1Yt BENT R -- SECTION D-D F I It 4x4xX S.S. I ROLLED w/ Ill'RAD. HANDRAIL SUPPORT DETAIL "B" SELF -TAPPING I SECTION F—F WEST OUTLOOK RAILING DETAILS SCALE: 3' = 1'-0 SCREWS w/ WASHER 4 IOWA RIVER DAM RENOVATION PEDESTRIAN TRUSS BRIDGE HANDRAIL SUPPORT DETAIL " C " CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY SCALE: 3' = 1'-0' OVER THE IOWA RIVER CITY OF IOWA CITY IOWA CITY, IOWA CT STATE AR IOWA 5 1 1 30 1 35 INC. 319351-2166 FAX 319 351-0256 5 Jl1, 30 PH 3: 14 j ' L r C r, SAFETY SWITCH AND METER ' MOUNTED ON SIDE OF STEPS GROUND ROD 1 LIGHT SOURCE FROM UTILITY POLE ELECTRICAL CIRCUIT - QUANTITIES FOR ESTIMATE PURPOSES ONLY ITEM UNIT QUANTITY CONDUIT RIGID STEEL 1 INCH DIA. LIN.FT. 470 CONDUIT RIGID STEEL 4 INCH DIA. LIN.FT. 1,600 CABLE I/C NO. 6 AWG 600 V. LIN.FT. 940 GROUND WIRE BARE COPPER 6 AWG LIN.FT. GROUND ROD AS PER PLAN EACH 1 LIGHTING NOTES LIGHTING INSTALLATION SHALL BE IN ACCORDANCE WITH SECTION 2523 OF THE STANDARD SPECIFICATIONS. LIGHT FIXTURES (10 REQ'D) SHALL BE THE FOLLOWING OR APPROVED EQUAL: LUMEC-LUMINAIRE - CAND1-PCCPD, RACE III, CN4-1A WATTAGE: 100 HPS VOLTAGE 120 V FINISH/COLOR FIXTURE -PAL, POLE-APR4-14-PAL (SILVER)- LBC1 INSTALL LIGHTS AS RECOMMENDED BY MANUFACTURER 2-#6 WIRES AND 1-#6 BARE COPPER GROUND WIRE INSIDE OF THE 1" RIGID STEEL CONDUIT. ALL QUANTITIES SHOWN TO BE INCLUDED IN THE ELECTRICAL CIRCUIT PAY ITEM ARE FOR ESTIMATING PURPOSES ONLY. 1-#6 BARE COPPER GROUND IN 1' DIA. RIGID STEEL CONDUIT FROM FUSED SAFETY SWITCH TO GROUND ROD INSTALLED AS SHOWN ABOVE. INSTALL 30 AMP FUSED SAFETY SWITCH, 600 VAC RATED, WITH GROUND TERMINAL KIT, SERVICE ENTRANCE LABEL, NEMA 4 ENCLOSURE, FUSED AT 20 AMP/TYPE LPN-RK. LIGHT CONTROL BY PHOTOELECTRIC CONTROL, SHALL BE MOUNTED NEXT TO SAFETY SWITCH. RATING. 240 VAC, 2000 VA. INSTALL LIGHTING TO MANUFACTURERS SPECIFICATIONS 4' CONDUITS ARE TO BE ATTACHED TO EACH TRUSS FLOOR BEAM WITH GALVANIZED 1/4' U BOLTS OR APPROVED HANGERS. SPACE HANGERS AS REQUIRED BY CONDUIT MANUFACTURER. 1" CONDUIT 4 LIGHTS FOR LOCATON SEE ISOMETRIC VIEW SHEET 27 PIER 1 LIGHTING PLAN V=40• o next To next unction Junction To To Box Box Service Junction Pole Box Y-3 Connectors L-2 Connectors To Light JUNCTION BOX HANDHOLE Note; Use light pole base for junction box To Junction Box 41 I. -1 Connectors To Light LIGHT CONNECTION 7075 JUN SO 4 LIGHTS i Jh" 2 (EAST DAM ABUTMENT) TRUSS -- i i � I HANDRAIL —TIMBER DECK LIGHT POLE DETAIL -- (10 REQUIRED) i 1" DIA. GALVANIZED STEEL 4" DIA., SCH. 80, CONDUIT TO BE HUNG GALVANIZED STEEL BENEATH PRE-ENGINEERED BRIDGE CONDUITS FOR FUTURE UTILITIES BRIDGE LIGHTING DETAILS ABUT. TO ABUT TYP. BRIDGE CROSS SECTION IOWA RIVER DAM RENOVATION & PRE-ENGINEERED PEDESTRIAN TRUSS BRIDGE CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY OVER THE IOWA RIVER CITY OF IOWA CITY PROJECT NUMBER STATE YEAR mWA 1 5 1 31 ki9 3= l z� \ 3 W )� As J REMOVE PAVEMENT AND REPLACE w/ NEW 6' ACC CURB SAWCUT REMOVAL LINE NEW RA-43 INTAKE & 24' RCP (20' LONG) TO RIVER (CUT HOLE THRU SHEET PILING) (SEE SHEET 32 FOR DETAIL) O 1 � O n 1tY 00 - 1 701 00 --- los' F.G.FI CD �1 6' TEMPORARY CHAIN LINK CONSTRUCTION FENCE AROUND SAWCUT LINE E FORM PLAN VIEW IOWA CITY, OWA INC. 719 351 2166 NAX 819 351 -D256 '975 JCS N 3 0 P1 iOWA ul -'lH PLAN NATION RIDGE IERS AT SPILLWAY VER ry IEZ I I sHEFTs 1 33 1 35 4 �rn U\ � � � n 10 175 Jill 30 P w04 + p 0 •n o O ww n _ I Ir) w V) I_7 t W N h + O CL Z U J _ n O( 7 / L a Ln war `_ �Ln I O w n L) v� ` U) j H jn co O d p Oz 0 t! L, 0c�0 lu-Z w 0<< ww 00 �) 3 O. w w o73 3ww U O z O V) L,� n aan-� /tom w LC c9 n 0 o z 7 7 o x7 rr o w rry 7 W> z r�1 F. ° w z t\cTT"7�1 p w W it O 7 n 7 L a F-- L 0 1 a `.�-' x O lJ U w n' O 3 X n L(I W C] w>i;i li. Q L)' O rY- �1 I J Q Ni n' 3 Q O � a In w __._ In. , I Z - Q U —0 — U { w U7 roz =aU 3z as o o Li z gx ��w �z's�a a� a u �A V) c)3 a7cr¢ O O �`2 �+ 4co L w W O/ 1 ' Q w Q N in w O O O N S bZ O dcr o a n j Q w U0 aw O O CyO U Qc)0 ' U 3 J Q Og 0 cr ED O n O x Q�r J Q� n z r) m U 0 1 H �m 00 o I ~ + a O c� u / L�� .� V) o w ICI - u) c3 _ N _ n w ^ W z o ) ro o a o ire x `' nwWU7 :tt7 J✓) O g0 m> ~� a 0 0 <11 O o, Z i p a of o Lr oIw w<) O n. O n cw. O w,. Qv J Cl- o� o� gwil� 1z R7 W n 0 na wJrY Kc m (Lfal) N - Ul J v) m Li iD O Qrt W O H O = I m W N J (n w Twa O 7 10 O 3AIda 2131VM3043 10 c' r l 0 [] W 0 0 O C) Q z Q N Q W w a ,7 10 (D (U H w U: a 0 n LY ¢ a w o z a U)3 Q a m v U) r z U <s 3: a Y QUN Q wY O 1 3 ' v- rr aQ to z 'v `la v)az 3 wa z O a L W Z) C.)O OL.) nwn� Nw Q 3w71 n > )w 0uj N m z a ow 3z wOL�w¢ p I'IU 0 rry I,) aw 3Tc� LLI >ix -gwrn S�aiLi�aa = z it 5< p w z w (1) �lil �Ln IO�(w/7 �L N��d.OwU O wZ Ww W Sww�iJ wm w�JO U7H W W Ow_wwM� Ov~i w 0 a Q d cr aww Or J' W O O W W MOOooJao~� N BOAT RAMP AND DRIVE w CE Er -awm~ <. IOWA RIVER DAM RENOVATION C) �owowl0Q W PEDESTRIAN TRUSS BRIDGE w g 0 ul CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY Z W ir W Zw w OVER THE IOWA RIVER O Z OQ x�¢ w Ia,30Q w w CITY OF IOWA CITY IOWACITY, IOWA PROJECT "DER ST.TE Y 7ovn 1 5 1 1 34 1 3 INC. 319 351 2166 FAX 319 351-0256 14 IRON PIN PLACED 508.b3' NORTH N 1509.53 E 1000.00 oj=Nl..le e e BFNCH MARK 52A5 60p SPIKF IN IIGHT POLF ACROSS FROM PARK OFFICE. N 1017.59 — --- - — ELEV. 6bb.01 F 1014.67 N 10-12.08 R = 40' — -- F 7045.73 CORNER OF NFW ACC IRON PIN ASSUMED N 1000.00 U o F 1000.00 �n N 987.62 0 N 1028.4b E I0T .80 R = 72.53' 36 E 993.05 R ' e R = tb' OR 36' n A - ---_ N 971. N 969.07 -----_ -- f 991-13 BEGIN NEW N 957.30 RAMP --- --.--_ E 1126.40 -`--�--- - END OF NEW ----'- - RAMP AT Cl 100' CULVERT EEXTE SIGN N 934.77 H E 1015.42 R = 25 SURVEY INFORMATION GROUND CLASS "E" RIP RAP is ❑EPTT I TYPICAL SFCTION - FILL 6" PAVING (RLIN. AS SHOWN) -I I—CL RAMP CLASS "A" CRUSHED STONE BASF 6' DEPTH SECTION A -A GROUND UNE 34 -LASS "F" RIP RAP 18" DEPTH .�.� CLASS "A' CRUSHED STONE POLYETHYI FNF MOISTURF BASE 6" DEPTH BARRIER 0.004 THICKNESS. (INCIDENTAL TO CONCRETE COSTS) IYPICAI SECTION CU1 6.00' 15.00' 6 00' 6' PAVING (RFIN. AS SHOWN) Cl ASS "E" RIP RAP LASS 'E" RIP RAP 18" DEPIFI I--rL RAMP 18" DEPTH 3T 0 CLASS "E" RIP RAP CLASS "A" CRUSHFD STONE TWO LAYERS POLYETHYLENE MOISTURE BASE 6' DEPTH BARRIER 0.004 THICKNESS. (INCIDENTAL TO CONCREIL COSTS) SECTION B-B N4'S M 1' -0- EACH WAY 6x6-W2.9xW2.9 IN. LAP 24 BAR DIA. WCLDLU WIRL IAt1NIC y/4' EXPANSION JOINT WITH TOP 1" DFEP SAW CUT FILLED 1" FILLED WITiI JOINT FILLER WITH JOINT FILLER 6xG-W2.9xW'2.9 6x6 W2.9zW2.9 WELDED WIRF FABRIC / WELD WINE IABRICo 6" OI CLASS "A' CRLIVILD SIONL 1111E 6" 5" \ POLYETHYLENE MOISTURE BARR!FR ONE RFOUIHEC JOINT @ EXISTING ROADWAY 1 BOAT RAMP ---ESTIMATE OF QUANTITIES ITEM QUANTITY PCC PAVING, 6' REINFORCED, AS SHOWN, SY. 226 REMOVAL OF BOAT RAP, AS PER PLAN LIMP SUM 1 6' DIA POSTS AS SHOWN EACH 36 4' ACC PAVEMENT TON 83 12' CMP, COMPLETE L.F. 100 SEEDING, FERT., MULCHING ACRES 0.03 CLASS 'E' RIP -RAP, BOAT RAMP TONS 600 GRANULAR SUBBASE S.Y. 226 GENERAL. NOTES: ALL CONCRETE SHAI I. CONFORM TO CLASS C - 4 MIX OF THE IOWA DOT CURRENT SPECIFICATIONS ALL EXPOSED EDGES OF CONCRFTF TO BE BEVELED WITH A 3/4" CHAMITR STRIP. THE TOP i" OF ALL EXPANSION JOINTS TO RECFIVF A SILICONE BASE POURING TYPL SEALFR. EXPANSION JOINTS ARE TO BE A 3/4" PRFFORMFD RLSILILNI IILLLR MATERIAI. RFINFORCING STFFL 10 BE EPDXY COATED AS PFR AASHTO M284 WIRE FABRIC SHALL HAVE A MIN. OF A 6" IAP. THAT PORTION OF THE RAMP TO BE PLACLU BELOW THE WATERLINE MAY BE FORMED ABOVE IIIL WATERLINE AND CAREFULLY PUSHED INTO POSITION UNDERWATER TO THE LOCATION AND ELEVATION SHOWN ON THE PIANS AND AS DIRLCILU BY THE ENGINFFR. THE REMAINING SLCTIONS SHALL RF FORMED IN PLACL. �� CONCRETE RAMP TO BE FINISHED WITH A DIAGONALLY GROOVED DEVICE TO FORM A - NONSKID SURFACE WITH A MIN. Or A 1' - _ ULPitI AND A MAX. 2 1/2' DISTANCE BLIWLLN 6- 1' 6" 6- GROOVES OR AS DIRFCTFD BY TIIL ENGINEER. 6" 1' -6" 6" SLOPE GROOVES TO DRAIN DOWNSIRFAM. 6" OF CLASS "A IOWA UNN WILL FURNISH GROOVING DEVICE. ti" OF CIASS "A" CRUSHFD STONE BASE CALL 615-761-5918 CRUSHED STONE BASF POLYETIIYLLNL MOISTURE BARRIER -TWO POLYETHYLENE MOISTURE BARRIER LAYERS RFOUIRFD UNDER SECTION OF RAMP AREA IF TO BF PUSHFD INTO POSITION UNDER WATER. BOAT RAMP DETAILS IOWA RIVER DAM RENOVATION ONE FRLQUIPLI PEDESTRIAN TRUSS BRIDGE SIX RCOLIIRFD CONCRETE PIERS AT DAM PILE BENT PIERS AT SPILLWAY EXPANSION JOINT EXPANSION JOINT @ RIVER SECTION OVER THE IOWA RIVER CITY OF IOWA CITY PROJECT NUMBER STRTE N YEAR N lOVA 5 T 3' \ lK 0W 1,G Prepared by: Alin Dumachi, Engineering Division, 410 E. Washington St., Iowa City, IA 52240, (319)356-5143 Resolution No. 25-16_5 Resolution setting a public hearing on August 5, 2025 on project manual and estimate of cost for the construction of the Iowa River Powerhouse Dam Repair Project, directing City Clerk to publish notice of said hearing, and directing the City Engineer to place said project manual on file for public inspection. Whereas, funds for this project are available in the Iowa River Powerhouse Dam Repair Project account #W3328. Now, therefore, be it resolved by the Council of the City of Iowa City, Iowa, that: 1. A public hearing on the project manual and estimate of cost for the construction of the above - mentioned project is to be held on the 51h day of August, 2025, at 6:00 p.m. in the Emma J. Harvat Hall, City Hall, Iowa City, Iowa, or if said meeting is cancelled, at the next meeting of the City Council thereafter as posted by the City Clerk. 2. The City Clerk is hereby authorized and directed to publish notice of the public hearing for the above -named project in a newspaper published at least once weekly and having a general circulation_ in the City, not less than four (4) nor more than twenty (20) days before said hearing. 3. A copy of the project manual and estimate of cost for the construction of the above -named project is hereby ordered placed on file by the City Engineer in the office of the City Clerk for public inspection. Passed and approved this 8th day of July , 2025. Mayor Approved by Attest: � " City Jerk City Attor y's Office (Liz Craig - 07/03/2025) It was moved by Moe adopted, and upon roll call there were: Ayes: and seconded by Nays: Salih the Resolution be Absent: Alter Bergus X Harmsen Moe Salih Teague Weilein Prepared by: Alin Dumachi, Engineering Division, 410 E. Washington St., Iowa City, IA 52240, (319) 356-5143 Resolution No. 25-191 Resolution approving project manual and estimate of cost for the construction of the Iowa River Powerhouse Dam Repair Project, establishing amount of bid security to accompany each bid, directing City Clerk to post notice to bidders, and fixing time and place for receipt of bids. Whereas, notice of public hearing on the project manual and estimate of cost for the above - named project was published as required by law, and the hearing thereon held; and Whereas, the City Engineer or designee intends to post notice of the project on the website owned and maintained by the City of Iowa City; and Whereas, funds for this project are available in the Iowa River Powerhouse Dam Repair Project account #W3328. Now, therefore, be it resolved by the City Council of the City of Iowa City, Iowa that: 1. The project manual and estimate of cost for the above -named project are hereby approved. 2. The amount of bid security to accompany each bid for the construction of the above - named project shall be in the amount of 10% (ten percent) of bid payable to Treasurer, City of Iowa City, Iowa. 3. The City Clerk is hereby authorized and directed to post notice as required in Section 26.3, not less than 13 days and not more than 45 days before the date of the bid letting, which may be satisfied by timely posting notice on the Construction Update Network, operated by the Master Builder of Iowa, and the Iowa League of Cities website. 4. Sealed bids for the above -named project are to be received by the City of Iowa City, Iowa, at the Office of the City Clerk, at the City Hall, before 3:00 p.m. on the 28th day of August, 2025. At that time, the bids will be opened by the City Engineer or his designee, and thereupon referred to the City Council of the City of Iowa City, Iowa, for action upon said bids at its next regular meeting, to be held at the Emma J. Harvat Hall, City Hall, Iowa City, Iowa, at 6:00 p.m. on the 2nd day of September, 2025, or at a special meeting called for that purpose. Passed and approved this 5th day of August , 20 25 r- Ma Approved by Attest: City Clerk City Attorne s Office (Liz Craig — 07/30/2025) Resolution No. 25-191 Page 2 It was moved by Harmsen adopted, and upon roll call there were: Ayes: x and seconded by Nays: Weilein Absent: Alter Bergus Harmsen Moe Salih Teague Weilein the Resolution be A,-1-0141 IOWA LEAGUE QfCITIES CERTIFICATE The Iowa League of Cities an entity organized under the laws of Iowa as an instrumentality of its member cities, with its principal place of business in Des Moines, Polk County, Iowa, does hereby certify that I am now and was at the time hereinafter mentioned, the duly qualified and acting Executive Director of the Iowa League of Cities, and that as such Executive Director of the League and by full authority from the Executive Board, I have caused a NOTICE TO BIDDERS Iowa River Powerhouse Dam Repair Project Classified ID: 111754574083 A printed copy of which is attached and made part of this certificate, provided on 08/07/2025 to be posted on the Iowa League of Cities internet site on the following date: 2025-08-07 I certify under penalty of perjury and pursuant to the laws of the State of Iowa that the preceding is true and correct. 08/07/2025 Alan Kemp, Executive Director 0100 NOTICE TO BIDDERS IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 3:00 P.M. on August 26th, 2025. Sealed proposals will be opened immediately thereafter. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 2"d day of September, 2025, or at special meeting called for that purpose. The Project will involve the following: Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. All work is to be done in strict compliance with the Project Manual prepared by Origin Design, Co., of Dubuque, Iowa, which has heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be submitted in a sealed envelope. In addition, a separate sealed envelope shall be submitted containing a completed Bidder Status Form and a bid security executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City (in the form shown in Section 0510) ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. The City shall retain the bid security furnished by the successful bidder until the approved contract has been executed, the required Performance, Payment, and Maintenance Bond (as shown in Section 0510) has been filed by the bidder guaranteeing the performance of the contract, and the contract and security have been approved by the City. The City shall promptly return the checks or bidder's bonds of unsuccessful bidders to the bidders as soon as the successful bidder is determined or within thirty days, whichever is sooner. The successful bidder will be required to furnish a Performance, Payment, and Maintenance Bond in an amount equal to one hundred percent (100%) of the contract price and in the form shown in Section 0510, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of one (1) year from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Specified Start Date: 2025 Construction Window: September 12, 2025 — November 15, 2025 2026 Construction Window: May 1, 2026 — October 31, 2026 Final Completion Date: All work to be completed within 90 days after mobilization of the site and within the dates shown above. Liquidated Damages: $1,000.00 per day The Project Manual may be examined at the office of the City Clerk. Copies thereof and blank forms may be secured at the office of Technigraphics, a division of Rapids Reproductions located at 415 Highland Avenue, Suite 100, Iowa City, IA 52240, Phone: (319) 354-5950, Fax: (319) 354-8973, Toll -Free: (800) 779-0093. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of Targeted Small Business contractors can be obtained from the Iowa Department of Administrative Services at (515) 242-5120. Bidders shall list on the Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall list on the Contract its subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Posted upon order of the City Council of Iowa City, Iowa. KELLIE GRACE, CITY CLERK Yulissa Caro From: Cindy Adams <CAdams@mbi.build> Sent: Thursday, August 7, 2025 10:03 AM To: Yulissa Caro Subject: Certificate for Notice to Bidders Attachments: We sent you safe versions of your files; 08.07.25 Notice To Bidders.pdf AI ** This email originated outside of the City of Iowa City email system. Please take extra care opening any links or attachments. ** Mimecast Attachment Protection has deemed this file to be safe, but always exercise caution when opening files. This message is from an external sender. Certificate The undersigned, being first duly sworn on oath, states that The Construction Update Plan Room Network ("CU Network") is a corporation duly organized and existing under the laws of the State of Iowa, with its principal place of business in Des Moines, Polk County, Iowa. The undersigned also states that he is now and was at the time hereinafter mentioned, the duly qualified and acting President / CEO of the CU Network, and that as such President / CEO of the CU Network and by full authority from the Executive Board, he caused a NOTICE TO BIDDERS Iowa City — FY25 CDBG Fairmeadows Sidewalk Improvements Project Iowa City — Iowa River Powerhouse Dam Repair Project A printed copy of which is attached and made part of this certificate, to be posted in the Construction Update Network Plan Room, a relevant contractor plan room service with statewide circulation and a relevant contractor lead generating service with statewide circulation, on the following date(s): August 07, 2025 I certify under penalty of perjury and pursuant to the laws of the State of Iowa that the preceding is true and correct. August 07, 2025 [�� Date President/CEO of The Construction Update Plan Room Network CgndyrAdamation mslist �� ^► Master Builders of Iowa P (515) 402-9858 E CAdams'.aMBI.Build I W www.MBl.Build Effective May 27th our new summer office hours will be 7:30 AM — 4:00 PM 0100 NOTICE TO BIDDERS IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 3:00 P.M. on August 26th, 2025. Sealed proposals will be opened immediately thereafter. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 2"d day of September, 2025, or at special meeting called for that purpose. The Project will involve the following: Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. All work is to be done in strict compliance with the Project Manual prepared by Origin Design, Co., of Dubuque, Iowa, which has heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be submitted in a sealed envelope. In addition, a separate sealed envelope shall be submitted containing a completed Bidder Status Form and a bid security executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City (in the form shown in Section 0510) ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. The City shall retain the bid security furnished by the successful bidder until the approved contract has been executed, the required Performance, Payment, and Maintenance Bond (as shown in Section 0510) has been filed by the bidder guaranteeing the performance of the contract, and the contract and security have been approved by the City. The City shall promptly return the checks or bidder's bonds of unsuccessful bidders to the bidders as soon as the successful bidder is determined or within thirty days, whichever is sooner. The successful bidder will be required to furnish a Performance, Payment, and Maintenance Bond in an amount equal to one hundred percent (100%) of the contract price and in the form shown in Section 0510, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of one (1) year from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Specified Start Date: 2025 Construction Window: September 12, 2025 — November 15, 2025 2026 Construction Window: May 1, 2026 — October 31, 2026 Final Completion Date: All work to be completed within 90 days after mobilization of the site and within the dates shown above. Liquidated Damages: $1,000.00 per day The Project Manual may be examined at the office of the City Clerk. Copies thereof and blank forms may be secured at the office of Technigraphics, a division of Rapids Reproductions located at 415 Highland Avenue, Suite 100, Iowa City, IA 52240, Phone: (319) 354-5950, Fax: (319) 354-8973, Toll -Free: (800) 779-0093. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of Targeted Small Business contractors can be obtained from the Iowa Department of Administrative Services at (515) 242-5120. Bidders shall list on the Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall list on the Contract its subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Posted upon order of the City Council of Iowa City, Iowa. KELLIE GRACE, CITY CLERK Prepared by: Alin Dumachi, Engineering Division, Public Works, 410 E. Washington St., Iowa City, IA 52240 (319) 356-5143 Resolution No. 25-212 Resolution rejecting bids received August 26, 2025 for the Iowa River Powerhouse Dam Repair Project and setting a new date for receipt of bids for the rebidding of the Iowa River Powerhouse Dam Repair Project, directing City Clerk to post notice to bidders, and fixing the time and place for receipt of bids. Whereas, bids were received on August 26, 2025 for the Iowa River Powerhouse Dam Repair Project; and Whereas, one bid was received and it exceeded the Engineer's Estimate by more than 100%; and Whereas, the Department of Public works recommends that Council reject all bids; issue an addendum, set a new date for receipt of bids, and revise the construction schedule, and Whereas, funds for this project are available in the Iowa River Powerhouse Dam Repair Project account #W3328. Now, therefore, be it resolved by the City Council of the City of Iowa City, Iowa, that: 1. All bids received on August 26, 2025, for the Iowa River Powerhouse Dam Repair Project are rejected. 2. An addendum shall be issued to the Project for the Iowa River Powerhouse Dam Repair Project, approved by resolution on August 5, 2025, to revise the project schedule. 3. The amount of bid security to accompany each bid for the construction of the above - named project shall be in the amount of 10% (ten percent) of bid payable to City of Iowa City, Iowa. 4. The City Clerk is hereby authorized and directed to post notice as required in Section 26.3, not less than 13 days and not more than 45 days before the date of the bid letting, which may be satisfied by timely posting notice on the Construction Update Network, operated by the Master Builder of Iowa, and the Iowa League of Cities website. 5. Sealed bids for the above -named project are to be received by the City of Iowa City, Iowa, at the Office of the City Clerk, at the City Hall, before 3:00 p.m. on the 14t' day of October, 2025. At that time, the bids will be opened by the City Engineer or his designee, and thereupon referred to the City Council of the City of Iowa City, Iowa, for action upon said bids at its next regular meeting, to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 21s' day of October, or at a special meeting called for that purpose. Passed and approved this 2nd day of September 2025 May Resolution No. 25-212 PageNo.2 Approved by Attest: 1' Cam, zlt'---� City Clerk City Attorney' Office — 08/28/2025 It was moved by salih and seconded by Alter the Resolution be adopted, and upon roll call there were: Ayes: Nays: Absent: x Alter x Bergus x Harmsen x Moe x Salih x Teague x Weilein A'roAl I I IOWA LEAGUE QfCITIES CERTIFICATE The Iowa League of Cities an entity organized under the laws of Iowa as an instrumentality of its member cities, with its principal place of business in Des Moines, Polk County, Iowa, does hereby certify that I am now and was at the time hereinafter mentioned, the duly qualified and acting Executive Director of the Iowa League of Cities, and that as such Executive Director of the League and by full authority from the Executive Board, I have caused a NOTICE TO BIDDERS Iowa River Powerhouse Dam Repair Project Classified ID: 111756907470 A printed copy of which is attached and made part of this certificate, provided on 09/04/2025 to be posted on the Iowa League of Cities internet site on the following date: 2025-09-04 I certify under penalty of perjury and pursuant to the laws of the State of Iowa that the preceding is true and correct. 09/04/2025 a w 4 Alan Kemp, Executive Director 0100 NOTICE TO BIDDERS IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 3:00 P.M. on October 141h, 2025. Sealed proposals will be opened immediately thereafter. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 211 day of October, 2025, or at special meeting called for that purpose. The Project will involve the following: Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. All work is to be done in strict compliance with the Project Manual prepared by Origin Design, Co., of Dubuque, Iowa, which has heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be submitted in a sealed envelope. In addition, a separate sealed envelope shall be submitted containing a completed Bidder Status Form and a bid security executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City (in the form shown in Section 0510) ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. The City shall retain the bid security furnished by the successful bidder until the approved contract has been executed, the required Performance, Payment, and Maintenance Bond (as shown in Section 0510) has been filed by the bidder guaranteeing the performance of the contract, and the contract and security have been approved by the City. The City shall promptly return the checks or bidder's bonds of unsuccessful bidders to the bidders as soon as the successful bidder is determined or within thirty days, whichever is sooner. The successful bidder will be required to furnish a Performance, Payment, and Maintenance Bond in an amount equal to one hundred percent (100%) of the contract price and in the form shown in Section 0510, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of one (1) year from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Specified Start Date: November 1, 2025 Substantial Completion Date: April 30, 2027 Final Completion Date: May 28, 2027 Liquidated Damages: $1,000.00 per day All of the bid items listed in Section 0400 — Proposal shall be completed by the Substantial Completion Date except seeding. The Project Manual may be examined at the office of the City Clerk. Copies thereof and blank forms may be secured at the office of Technigraphics, a division of Rapids Reproductions located at 415 Highland Avenue, Suite 100, Iowa City, IA 52240, Phone: (319) 354-5950, Fax: (319) 354-8973, Toll -Free: (800) 779-0093. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of Targeted Small Business contractors can be obtained from the Iowa Department of Administrative Services at (515) 242-5120. Bidders shall list on the Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall list on the Contract its subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and . coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Posted upon order of the City Council of Iowa City, Iowa. KELLIE GRACE, CITY CLERK Yulissa Caro From: Cindy Adams <CAdams@mbi.build> Sent: Thursday, September 4, 2025 9:52 AM To: Yulissa Caro Subject: Certificate for Notice to Bidders Attachments: We sent you safe versions of your files; 09.04.25 Notice to Bidders.pdf Ai RISK ** This email originated outside of the City of Iowa City email system. Please take extra care opening any links or attachments. ** Mimecast Attachment Protection has deemed this file to be safe, but always exercise caution when opening files. This message is from an external sender. Certificate The undersigned, being first duly sworn on oath, states that The Construction Update Plan Room Network ("CU Network") is a corporation duly organized and existing under the laws of the State of Iowa, with its principal place of business in Des Moines, Polk County, Iowa. The undersigned also states that he is now and was at the time hereinafter mentioned, the duly qualified and acting President / CEO of the CU Network, and that as such President / CEO of the CU Network and by full authority from the Executive Board, he caused a NOTICE TO BIDDERS Iowa River Powerhouse Dam Repair Project A printed copy of which is attached and made part of this certificate, to be posted in the Construction Update Network Plan Room, a relevant contractor plan room service with statewide circulation and a relevant contractor lead generating service with statewide circulation, on the following date(s): September 04, 2025 I certify under penalty of perjury and pursuant to the laws of the State of Iowa that the preceding is true and correct. l/ ►�s-� rC - 0 0 September 04, 2025 Date President/CEO of The Construction Update Plan Room Network 1 0100 NOTICE TO BIDDERS IOWA RIVER POWERHOUSE DAM REPAIR PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 3:00 P.M. on October 141', 2025. Sealed proposals will be opened immediately thereafter. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 6:00 P.M. on the 21 SI day of October, 2025, or at special meeting called for that purpose. The Project will involve the following: Repairs to the Iowa River Powerhouse Dam, including the work required to access the site and for upgrades to the pedestrian trail. Repair of the dam generally includes concrete surface repairs. All work is to be done in strict compliance with the Project Manual prepared by Origin Design, Co., of Dubuque, Iowa, which has heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be submitted in a sealed envelope. In addition, a separate sealed envelope shall be submitted containing a completed Bidder Status Form and a bid security executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City (in the form shown in Section 0510) ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. The City shall retain the bid security furnished by the successful bidder until the approved contract has been executed, the required Performance, Payment, and Maintenance Bond (as shown in Section 0510) has been filed by the bidder guaranteeing the performance of the contract, and the contract and security have been approved by the City. The City shall promptly return the checks or bidder's bonds of unsuccessful bidders to the bidders as soon as the successful bidder is determined or within thirty days, whichever is sooner. The successful bidder will be required to furnish a Performance, Payment, and Maintenance Bond in an amount equal to one hundred percent (100%) of the contract price and in the form shown in Section 0510, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of one (1) year from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Specified Start Date: November 1, 2025 Substantial Completion Date: April 30, 2027 Final Completion Date: May 28, 2027 Liquidated Damages: $1,000.00 per day All of the bid items listed in Section 0400 — Proposal shall be completed by the Substantial Completion Date except seeding. The Project Manual may be examined at the office of the City Clerk. Copies thereof and blank forms may be secured at the office of Technigraphics, a division of Rapids Reproductions located at 415 Highland Avenue, Suite 100, Iowa City, IA 52240, Phone: (319) 354-5950, Fax: (319) 354-8973, Toll -Free: (800) 779-0093. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of Targeted Small Business contractors can be obtained from the Iowa Department of Administrative Services at (515) 242-5120. Bidders shall list on the Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall list on the Contract its subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Posted upon order of the City Council of Iowa City, Iowa. KELLIE GRACE, CITY CLERK (V, Prepared by: Alin Dumachi, Engineering Division, Public Works, 410 E. Washington St., Iowa City, IA 52240 (319) 356-5143 Resolution No. 25-247 Resolution rejecting all bids received October 14, 2025 for the Iowa River Powerhouse Dam Repair Project. Whereas, one bid was received on October 14, 2025 for the Iowa River Powerhouse Dam Repair Project; and Whereas, the bid received exceeded the Engineer's Estimate by more than 100%; and Whereas, the Department of Public works recommends that Council reject the bid; and Whereas, funds for this project are available in the Iowa River Powerhouse Dam Repair Project account #W3328. Now, therefore, be it resolved by the City Council of the City of Iowa City, Iowa, that: 1. All bids received on October 14, 2025, for the Iowa River Powerhouse Dam Repair Project are rejected. Passed and approved this 21st day of October , 2025 Mayor I ) - . Attest: ' City 6erk It was moved by salih and seconded by adopted, and upon roll call there were: Ayes: x Y Nays: Approved by City Attorn 's Office (Liz Craig—10/16/2025) Alter the Resolution be Absent: Alter Bergus Harmsen Moe Salih Teague Weilein