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Home My WebLink About9/9/13 stormcalculations ALDI Inc. – Iowa City, IA Weaver Boos Consultants Storm Water Calculations ALDI INC. 760 RUPPERT ROAD IOWA CITY, IA STORM WATER SITE DISCHARGE & PIPE SIZING CALCULATIONS June 12, 2013 4085 Meghan Beeler Court South Bend, Indiana 46628 Phone: (574) 271-3447 Fax: (574) 271-3343 www.weaverboos.com STORM WATER SITE DISCHARGE CALCULATIONS StormwaterManagementReport WEAVER BOOS CONSULTANTS June12,2013ALDIInc.IowaCity,IA Autodesk Storm and Sanitary Sewer Analysis 2013 Project Description File Name ....................................................ALDI Inc. - Iowa City, IA - Stormwater Discharge.SPF Project Options Flow Units ...................................................CFS Elevation Type ............................................Elevation Hydrology Method .......................................SCS TR-20 Time of Concentration (TOC) Method ........User-Defined Link Routing Method ...................................Kinematic Wave Enable Overflow Ponding at Nodes ............YES Skip Steady State Analysis Time Periods ...NO Analysis Options Start Analysis On ........................................May 22, 201300:00:00 End Analysis On ..........................................May 23, 201300:00:00 Start Reporting On ......................................May 22, 201300:00:00 Antecedent Dry Days ..................................0days Runoff (Dry Weather) Time Step ................0 01:00:00 days hh:mm:ss Runoff (Wet Weather) Time Step ...............0 00:05:00 days hh:mm:ss Reporting Time Step ...................................0 00:05:00 days hh:mm:ss Routing Time Step ......................................60seconds Number of Elements Qty Rain Gages .................................................1 Subbasins....................................................2 Nodes...........................................................2 0 Junctions ............................................ 2 Outfalls ............................................... 0 Flow Diversions .................................. 0 Inlets ................................................... 0 Storage Nodes ................................... Links.............................................................0 0 Channels ............................................ 0 Pipes .................................................. 0 Pumps ................................................ 0 Orifices ............................................... 0 Weirs .................................................. 0 Outlets ................................................ Pollutants ....................................................0 Land Uses ...................................................0 Rainfall Details SNRain GageDataData SourceRainfallRainStateCountyReturnRainfallRainfall IDSourceIDTypeUnitsPeriodDepthDistribution (years)(inches) 1RainfallTime SeriesTS-01CumulativeinchesNoneNone1007.13SCS Type II 24-hr Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin Hydrology Subbasin : Proposed Area to City (Ruppert Offsite) Input Data Area (ac) .....................................................0.37 Weighted Curve Number ............................91.00 Rain Gage ID ...............................................Rainfall Composite Curve Number AreaSoilCurve Soil/Surface Description(acres)GroupNumber Pavement0.30-98.00 Landscape0.07-61.00 Composite Area & Weighted CN0.3791.00 Subbasin Runoff Results Total Rainfall (in) .........................................7.13 Total Runoff (in) ..........................................6.07 Peak Runoff (cfs) ........................................2.60 Weighted Curve Number ............................91.00 Time of Concentration (days hh:mm:ss) .....0 00:15:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Proposed Area to Development (West Offsite) Input Data Area (ac) .....................................................1.76 Weighted Curve Number ............................86.02 Rain Gage ID ...............................................Rainfall Composite Curve Number AreaSoilCurve Soil/Surface Description(acres)GroupNumber Pavement0.81-98.00 Building0.38-98.00 Landscape0.57-61.00 Composite Area & Weighted CN1.7686.02 Subbasin Runoff Results Total Rainfall (in) .........................................7.13 Total Runoff (in) ..........................................5.49 Peak Runoff (cfs) ........................................12.87 Weighted Curve Number ............................86.02 Time of Concentration (days hh:mm:ss) .....0 00:10:00 STORM SEWER PIPE SIZING CALCULATIONS StormwaterManagementReport WEAVER BOOS CONSULTANTS June12,2013ALDIInc.IowaCity,IA WEAVER BOOS CONSULTANTS Job #2586-358-32Sheet 4085 MEGHAN BEELER COURTByRAVDate06/12/13 SOUTH BEND, INDIANA 46628Ck'dMHFDate06/12/13 Project :ALDI INC - IOWA CITY, IASubject :Storm Sewer Sizing Calculations RUNOFF COEFFICIENT CALCULATION: Pavement - C =0.95* Roof - C =0.95* Landscape - C =0.30* Pond - C =1.00* * Runoff Coefficients, per IOWA DOT Drainage Manual LANDSCAPE WET POND C - VALUE AT ROOF AREA AREA AREAINDIVIDUAL PAVEMENT AREA TOTAL AREA (ACRES)(ACRES) (ACRES)(ACRES)(ACRES)STRUCTURE STRUCTURE C.B. #A0.0480.0000.0000.0000.0480.950 C.B. #B0.3950.0000.1970.0000.5920.734 C.B. #C0.0000.078 0.2590.0000.3370.800 C.B. #D0.0990.0000.1040.0000.2030.617 C.B. #E0.2050.0000.0140.0000.2190.908 C.B. #F0.0870.0000.0110.0000.0980.877 M.H. #G0.0000.0000.0000.0000.0000.000 AutodeskStormandSanitarySewerAnalysis2013 Autodesk Storm and Sanitary Sewer Analysis 2013 Project Description File Name .............................................................................ALDI Inc. - Iowa City, IA - Pipe Sizing.SPF Project Options Flow Units .............................................................................CFS Elevation Type ......................................................................Elevation Hydrology Method .................................................................Rational Time of Concentration (TOC) Method ..................................User-Defined Link Routing Method .............................................................Hydrodynamic Enable Overflow Ponding at Nodes ......................................YES Skip Steady State Analysis Time Periods ............................NO Analysis Options Start Analysis On ..................................................................Jun 12, 201300:00:00 End Analysis On ...................................................................Jun 12, 201312:00:00 Start Reporting On ................................................................Jun 12, 201300:00:00 Antecedent Dry Days ............................................................0days Runoff (Dry Weather) Time Step ..........................................0 01:00:00 days hh:mm:ss Runoff (Wet Weather) Time Step ........................................0 00:05:00 days hh:mm:ss Reporting Time Step ............................................................0 00:05:00 days hh:mm:ss Routing Time Step ................................................................30seconds Number of Elements Qty Rain Gages ...........................................................................0 Subbasins..............................................................................7 Nodes....................................................................................13 3 Junctions ...................................................................... 4 Outfalls ......................................................................... 0 Flow Diversions ........................................................... 6 Inlets ............................................................................ 0 Storage Nodes ............................................................. Links......................................................................................9 0 Channels ...................................................................... 8 Pipes ............................................................................ 1 Pumps .......................................................................... 0 Orifices ......................................................................... 0 Weirs ............................................................................ 0 Outlets .......................................................................... Pollutants ..............................................................................0 Land Uses ............................................................................0 Rainfall Details Return Period........................................................................10 year(s) Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin Hydrology Subbasin : Sub-C.B. #A Input Data Area (ac) .......................................................0.05 Weighted Runoff Coefficient ........................0.9500 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.05-0.95 Composite Area & Weighted Runoff Coeff.0.050.95 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.88 Peak Runoff (cfs) .........................................0.25 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.9500 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-C.B. #B Input Data Area (ac) .......................................................0.59 Weighted Runoff Coefficient ........................0.7300 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.40-0.95 Pervious0.20-0.30 Composite Area & Weighted Runoff Coeff.0.600.73 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.68 Peak Runoff (cfs) .........................................2.41 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.7300 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-C.B. #C Input Data Area (ac) .......................................................0.34 Weighted Runoff Coefficient ........................0.8000 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.26-0.95 Pervious0.08-0.30 Composite Area & Weighted Runoff Coeff.0.340.80 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.74 Peak Runoff (cfs) .........................................1.50 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.8000 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-C.B. #D Input Data Area (ac) .......................................................0.20 Weighted Runoff Coefficient ........................0.6200 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.10-0.95 Pervious0.10-0.30 Composite Area & Weighted Runoff Coeff.0.200.62 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.58 Peak Runoff (cfs) .........................................0.70 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.6200 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-C.B. #E Input Data Area (ac) .......................................................0.22 Weighted Runoff Coefficient ........................0.9100 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.21-0.95 Pervious0.01-0.30 Composite Area & Weighted Runoff Coeff.0.220.91 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.85 Peak Runoff (cfs) .........................................1.11 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.9100 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-C.B. #F Input Data Area (ac) .......................................................0.10 Weighted Runoff Coefficient ........................0.8800 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.09-0.95 Pervious0.01-0.30 Composite Area & Weighted Runoff Coeff.0.100.88 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.82 Peak Runoff (cfs) .........................................0.48 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.8800 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Subbasin : Sub-ROOF Input Data Area (ac) .......................................................0.38 Weighted Runoff Coefficient ........................0.9500 Runoff Coefficient AreaSoilRunoff Soil/Surface Description(acres)GroupCoeff. Impervious0.38-0.95 Composite Area & Weighted Runoff Coeff.0.380.95 Subbasin Runoff Results Total Rainfall (in) ..........................................0.93 Total Runoff (in) ............................................0.88 Peak Runoff (cfs) .........................................1.99 Rainfall Intensity ...........................................5.580 Weighted Runoff Coefficient ........................0.9500 Time of Concentration (days hh:mm:ss) ......0 00:10:00 Autodesk Storm and Sanitary Sewer Analysis 2013 Junction Input SNElementInvertGround/Rim IDElevation(Max) Elevation (ft)(ft) 1656.66659.75 2ROOF658.65663.00 3656.43663.00 Autodesk Storm and Sanitary Sewer Analysis 2013 Junction Results SNElementPeakPeakMax HGLMax HGLMaxAverage HGLAverage HGLTime ofTotalTotal Time IDInflowLateralElevationDepthSurchargeElevationDepthMax HGLFloodedFlooded InflowAttainedAttainedDepthAttainedAttainedOccurrenceVolume Attained (cfs)(cfs)(ft)(ft)(ft)(ft)(ft)(days hh:mm)(ac-in)(min) 11.470.00657.360.700.00656.710.050 00:110.000.00 2ROOF1.991.99659.410.760.00658.700.050 00:100.000.00 30.240.00656.430.000.00656.430.000 00:000.000.00 Autodesk Storm and Sanitary Sewer Analysis 2013 Pipe Input SNElementLengthInletInletOutletOutletTotalAveragePipePipePipeManning'sEntranceExit/BendAdditionalNo. of IDInvertInvertInvertInvertDropSlopeShapeDiameter orWidthRoughnessLossesLossesLossesBarrels ElevationOffsetElevationOffsetHeight (ft)(ft)(ft)(ft)(ft)(ft)(%)(in)(in) 115.00656.580.00656.430.000.151.0000CIRCULAR9.9609.9600.01100.50000.50000.00001 261.00658.760.00658.560.000.200.3300CIRCULAR12.00012.0000.01100.50000.50000.00001 361.00658.560.00658.360.000.200.3300CIRCULAR15.00015.0000.01100.50000.50000.00001 4242.00658.360.00657.750.000.610.2500CIRCULAR18.00018.0000.01100.50000.50000.00001 574.00656.970.00656.720.000.250.3400CIRCULAR12.00012.0000.01100.50000.50000.00001 620.00656.720.00656.660.000.060.3000CIRCULAR12.00012.0000.01100.50000.50000.00001 721.00656.660.00656.590.000.070.3300CIRCULAR12.00012.0000.01100.50000.50000.00001 830.00658.650.00658.500.000.150.5000CIRCULAR12.00012.0000.01100.50000.50000.00001 Autodesk Storm and Sanitary Sewer Analysis 2013 Pipe Results SNElementPeakTime ofDesign FlowPeak Flow/Peak FlowTravelPeak FlowPeak FlowTotal Time IDFlowPeak FlowCapacityDesign FlowVelocityTimeDepthDepth/Surcharged OccurrenceRatioTotal Depth Ratio (cfs)(days hh:mm)(cfs)(ft/sec)(min)(ft)(min) 10.240 00:112.590.097.040.040.090.110.00 22.210 00:112.410.912.810.361.001.004.00 33.530 00:114.370.813.280.311.040.830.00 44.080 00:126.230.653.511.150.940.620.00 51.040 00:112.450.421.820.680.690.690.00 61.470 00:112.310.642.380.140.740.740.00 71.470 00:112.430.602.830.120.630.630.00 81.980 00:102.980.673.490.140.680.680.00 Autodesk Storm and Sanitary Sewer Analysis 2013 Inlet Input SNElementInletManufacturerInletNumber ofCatchbasinMax (Rim)InletInitialGrate IDManufacturerPartLocationInletsInvertElevationDepthWaterClogging NumberElevationDepthFactor (ft)(ft)(ft)(ft)(%) 1NEENAH FOUNDRYR-3210-QOn Sag1656.58658.582.000.000.00 2NEENAH FOUNDRYR-3067On Sag1658.76661.502.740.000.00 3NEENAH FOUNDRYR-3067On Sag1658.56661.853.290.000.00 4NEENAH FOUNDRYR-3015On Sag1658.36661.653.290.000.00 5NEENAH FOUNDRYR-3015On Sag1656.97660.753.780.000.00 6NEENAH FOUNDRYR-3015On Sag1656.72660.103.380.000.00 Autodesk Storm and Sanitary Sewer Analysis 2013 Roadway & Gutter Input SNElementRoadwayRoadwayRoadwayGutterGutterGutter IDLongitudinalCrossManning'sCrossWidthDepression SlopeSlopeRoughnessSlope (ft/ft)(ft/ft)(ft/ft)(ft)(in) 1N/A0.02000.01300.01001.000.0000 2N/A0.02000.01300.01001.000.0000 3N/A0.02000.01300.01001.000.0000 4N/A0.02000.01300.01001.000.0000 5N/A0.02000.01300.01001.000.0000 6N/A0.02000.01300.01001.000.0000 Autodesk Storm and Sanitary Sewer Analysis 2013 Inlet Results SNElementPeakPeakMax GutterMax GutterMax GutterTime ofTotalTotal Time IDFlowLateralSpreadWater Elev.Water DepthMax DepthFloodedFlooded Inflowduring Peakduring Peakduring PeakOccurrenceVolume FlowFlowFlow (cfs)(cfs)(ft)(ft)(ft)(days hh:mm)(ac-in)(min) 10.250.251.72658.620.040 00:110.000.00 22.412.4111.91661.730.230 00:110.000.00 31.501.508.52662.020.170 00:110.000.00 40.700.705.88661.760.110 00:110.000.00 51.111.118.20660.920.170 00:110.000.00 60.480.484.51660.190.090 00:110.000.00 STORM WATER POLLUTION PREVENTION PLAN FOR CONSTRUCTION OF ALDI INC. 760 RUPPERT ROAD IOWA CITY, IA 52246 Prepared for ALDI Inc. July 3, 2013 Prepared by Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, IN 46628 2586-358-32 SWPPP Storm Water Pollution Prevention Plan for Construction Activities Revision Schedule This storm water pollution prevention plan (SWPPP) shall be revised and updated to address changes in site conditions, new or revised government regulations, and additional on-site storm water pollution controls as required by the site owner, the permitting authority and the municipality. All revisions to the SWPPP must be documented on the SWPPP Revision Documentation Form, which will include the information shown below. The authorized facility representative who approves the SWPPP is Michael Rosch, the Director of Real Estate, ALDI Inc. Dwight Division. The signature of this representative attests that the SWPPP revision information is true and accurate. The previous author and facility representative are not responsible for the revisions. SWPPP Revision Documentation Form Company Number Date AuthorRepresentative Signature 0 1 2 3 4 5 6 7 8 9 10 Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 CONTENTS 1 CONSTRUCTION ENVIRONMENTAL SUMMARY 1-1 1.1 Summary 1-1 2 INTRODUCTION 2-1 2.1 Storm Water Pollution Prevention Plan Requirements 2-1 2.2 Purpose 2-1 2.3 SWPPP Organization 2-1 3 CLEARING LIMITS 3-1 3.1 Site Plans 3-1 3.2 Marking Clearing Limits 3-1 3.3 Special Consideration 3-1 3.4 Selected BMPs 3-1 4 CONSTRUCTION ACCESS 4-1 4.1 Site Access 4-1 4.2 Street Cleaning 4-1 4.3 Wheel Wash 4-1 4.4 Selected BMPs 4-1 5 STORM WATER DETENTION 5-1 5.1 Primary Storm Water Detention System 5-1 5.2 Run-on Bypass 5-1 5.3 Selected BMPs 5-1 6 SEDIMENT CONTROLS 6-1 6.1 Site Sediment Control System 6-1 6.2 Dust Control 6-1 6.3 Selected BMPs 6-1 7 SOIL STABILIZATION 7-1 7.1 Soil Stabilization 7-1 7.2 Structural BMPs 7-1 8 SLOPE PROTECTION 8-1 8.1 General Practices 8-1 Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 i CONTENTS(Continued) 8.2 Suggested BMPs 8-1 9 DRAIN INLET PROTECTION 9-1 9.1 Existing Storm Drains 9-1 9.2 Newly Constructed Storm Drains 9-1 9.3 Suggested BMP 9-1 10 STORM WATER OUTLET PROTECTION 10-1 10.1 Treatment System Outlet to Stream 10-1 10.2 Street Drainage to Stream 10-1 10.3 Bypass Drainage to Stream 10-1 10.4 Suggested BMPs 10-1 11 SPILL PREVENTION AND RESPONSE 11-1 11.1 General Materials Handling Practices 11-1 11.2 Specific Materials Handling Practices 11-2 11.3 Spill Response 11-3 11.4 Notification 11-4 12 STORM WATER TREATMENT 12-1 12.1 Storm Water Collection System 12-1 13 BMP MAINTENANCE 13-2 14 PROJECT MANAGEMENT 14-1 14.1 Soil Erosion & Sedimentation Control Sequence of Operation 14-1 14.2 Seasonal Work 14-1 14.3 Training 14-2 14.4 Pre-construction Conference 14-2 14.5 Coordination with Utilities and other Contractors 14-2 14.6 Subcontractor Oversight 14-2 14.7 Monitoring/Reporting 14-2 14.8 SWPPP Update 14-2 Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 ii CONTENTS(Continued) APPENDIX A NPDES STORM WATER PERMIT FOR CONSTRUCTION & STATE WATER QUALITY STANDARDS APPENDIX B FIGURES & DRAWINGS Figures (F1) Existing Site Photos (F2) Soil Survey (F3) Site Survey (F4) Soil Erosion Control Plan Drawings (D1) Stabilized Construction Entrance Detail (D2) Silt Fence Detail (D3) Storm Drain Inlet Protection Detail (Bag) (D4) Storm Drain Inlet Protection Detail (Silt Fence) (D5) Concrete Washout Area Detail (D6) Culvert Inlet Protection Detail (Silt Fence) APPENDIX C MATERIAL SAFETY DATA SHEETS APPENDIX D NPDES - CONTRACTOR CERTIFICATION FORM Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 iii Storm Water Pollution Prevention Plan for Construction Activities 1CONSTRUCTION ENVIRONMENTAL SUMMARY 1.1Summary ALDI Inc. is proposing to construct a new 16,402 sq.ft. grocery facility at 760 Ruppert Road in Iowa City, IA. ALDI’s proposed development is approximately 1.88 acres consisting of a building, parking lot and landscaping areas. The proposed ALDI development will also include storm and sanitary sewer, water, gas, telephone and electric service. ThisStorm Water Pollution Prevention Plan details all of the protective environmental measures, which will be employed during construction of the project to meet the requirements of the Iowa Department of Natural Resources NPDES General Permit No 2. 1.1.1Project Description ALDI’s proposed development has a total area of 2.12 acres. The existing impervious area for this development is 2.01 acres (Composite Runoff Coefficient C = 0.92), while the proposed impervious area for this development after construction is 1.48 acres (Composite Runoff Coefficient C = 0.75). The total area to be disturbed during construction is 2.12 acres. 1.1.2Existing Site Conditions The existing site is fully developed and consists of existing buildings and parking lot. The demolition of the existing buildings and parking lot are to be completed by others prior to ALDI’s construction. The existing site topography generally slopes from the north portion of the site towards the south property boundary, with positive drainage towards the existing storm sewer inlets and culvert south of the site. See Figure (F1) for Existing Site Photos. Drainage from the existing site flows into the existing storm water conveyance system or daylights south of the property towards an existing culvert. See Figure (F3) for Site Survey. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 1-1 Storm Water Pollution Prevention Plan for Construction Activities 1.1.3Adjacent Areas Areas that may be affected by runoff of sediment-contaminated water include the proposed and existing storm inlets, the existing municipal storm water conveyance system and the existing off-site storm water detention area. 1.1.4Critical Areas The critical storm water pollution control areas for this project are the proposed catch basins upon installation, before final stabilization and seeding, and after all construction is completed. To control the critical areas, the storm water will be filtered with a combination of temporary inlet sediment filter bags prior to final grading and silt fence with geotextile blanket positioned around the grate upon final grading. Silt fence will be placed at all limits of disturbance. Following construction, 24” sumps in the proposed catch basins will capture any sediment from the storm water runoff. 1.1.5Soils Per the USDA “Natural Resources Conservation Service” the existing soil types for this site are: Nevin Silty Clay Loam, Hydrologic Soil Group C/D; Colo Silty Clay Loam, Hydrologic Soil Group C/D; Ely Silt Loam, Hydrologic Soil Group C/D. See Figure (F2) for the Soil Survey and Hydrologic Soil Group Definitions. 1.1.6Erosion Problem Areas In general the site drains from the north portion of the site towards the south property boundary, with positive drainage towards the existing storm sewer inlets and culvert south of the site. All disturbed areas could have the potential for silt laden runoff. Temporary silt fencing around all disturbed areas will filter and slow the sheet flow runoff from the site. 1.1.7Construction Phasing Construction for this project will be completed in a single phase. 1.1.8Construction Schedule The construction of the proposed project is anticipated to begin in the Summer 2013, and conclude Winter 2013. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 1-2 Storm Water Pollution Prevention Plan for Construction Activities 1.1.9Engineering Calculations There are no sediment ponds, sediment traps, diversions, conveyance channels, or storm water treatment facilities that require calculations for this project. An existing development detention area located off-site southeast of the site has been designed to accommodate most of the runoff from the proposed site and discharge with a restricted outlet. The runoff from the site that was not anticipated in the detention area calculations will be conveyed into the municipal storm sewer conveyance system. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 1-3 Storm Water Pollution Prevention Plan for Construction Activities 2INTRODUCTION 2.1Storm Water Pollution Prevention Plan Requirements This Storm Water Pollution Prevention Plan (SWPPP) was developed consistent with the requirements of the National Pollutant Discharge Elimination System (NPDES) General Permit No. 2 Storm Water Discharge Associated with Construction Activities (see Appendix A for a copy of the general permit). A copy of the SWPPP must be kept on- site at all times and must be available to be produced for inspection within three hours. The Plan, properly implemented, should result in the discharge of water to the environment without the violation of Water Quality Standards. 2.2Purpose The purpose of this SWPPP is to: Describe best management practices (BMPs) to minimize erosion and sediment runoff at the site Identify, reduce, eliminate, or prevent the pollution of storm water Prevent violations of surface water quality or groundwater quality standards 2.3SWPPP Organization This plan consists of a detailed narrative section and the appendices, which contain illustrations, maps, and drawings. The narrative section includes descriptions of potential pollution problems associated with site features, and then discusses the selection of specific pollution prevention BMPs to reduce or eliminate the threat of causing pollution during the actual construction project. The illustrations, maps, and drawings in the appendices show the site location, topography, sensitive environmental receptors, placement of BMPs, and BMP specifications and performance expectations. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 2-1 Storm Water Pollution Prevention Plan for Construction Activities The narrative section of this plan is organized in numbered sections around the 12 required elements of an SWPPP listed below: 1.Mark project clearing limits 2.Establishing the construction entrance(s) 3.Storm water detention 4.Selection and installation of sediment controls 5.Soil stabilization 6.Slope protection 7.Drain inlet protection 8.Storm water outlet protection 9.Chemical spill prevention and response 10.Site storm water treatment 11.BMP maintenance 12.Project management In the narrative section, each of the above elements will be discussed in relation to the specific conditions at the development. BMPs for each element will be screened, resulting in selection of those BMPs deemed most appropriate for use. Specifications and engineering drawings of the selected BMPs are referenced at the end of each section and can be found in the Appendix. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 2-2 Storm Water Pollution Prevention Plan for Construction Activities 3CLEARING LIMITS 3.1Site Plans Figure (F3), the Site Survey, depicts all the topographic features and natural drainage patterns associated with the site. Figure (F4), the Soil Erosion Control Plan, depicts the proposed development and the placement of all relevant storm water BMPs. 3.2Marking Clearing Limits Prior to beginning earth-disturbing activities, including clearing and grading, all clearing limits, easements, setbacks, sensitive areas and their buffers, trees and drainage courses will be clearly marked to prevent environmental damage both on and off site. The limits for this project include all property boundaries. 3.3Special Consideration Only those areas requiring disturbance for the construction of proposed facilities will be disturbed. Existing vegetated areas outside the construction limits will remain undisturbed. 3.4Selected BMPs NA Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 3-1 Storm Water Pollution Prevention Plan for Construction Activities 4CONSTRUCTION ACCESS 4.1Site Access The main construction access will be established along the west end of the site. All construction vehicles entering or exiting the site will be limited to this access. See Appendix B for detail. 4.2Street Cleaning If sediment is accidentally transported on to the street it will be removed from the street surface on a daily basis. Sediment will be shoveled and/or swept from the street and disposed of in a manner, which prevents contamination with storm water or surface water (e.g., covered soil stockpile). In addition, a street sweeper may be used to maintain clean roads on an as-needed basis. 4.3Wheel Wash Based on site conditions and time of year, a temporary truck wheel wash station may be constructed if necessary to ensure control of sediment at the construction exit point. The wheel wash system will be constructed on the site at a location just prior to where trucks leave the site access and enter the street. The system will consist of an asphalt-lined wash pond for immersing the truck tires as the truck drives through and a small settling pond for settling suspended sediment in wash water cycled out of the system. Wash water may be reused after settling, infiltrated onsite, or transported off site for disposal. Accumulated sediments will be collected periodically, stockpiled for dewatering, then reused onsite. 4.4Selected BMPs BMP B: Stabilized Construction Entrance (see drawing D1) BMP C: Wheel Wash Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 4-1 Storm Water Pollution Prevention Plan for Construction Activities 5STORM WATER DETENTION 5.1Primary Storm Water Detention System There is an existing development storm water detention area off-site located southeast of the proposed site. The detention area was designed (by others) to accommodate most of the the runoff from the proposed site. The runoff from the site that was not anticipated in the detention area calculations will be conveyed into the municipal storm sewer conveyance system. The proposed site BMPs will aid in reducing sediment loads to the proposed storm water conveyance and detention facilities. 5.2Run-on Bypass There is no significant run-on discharging onto the proposed site. 5.3Selected BMPs BMP K: Silt Fence (see drawing D2) BMP J: Storm Drain Inlet Protection (see drawings D3, D4) BMP J: Culvert Inlet Protection (see drawing D6) BMP D: Temporary Seeding Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 5-1 Storm Water Pollution Prevention Plan for Construction Activities 6SEDIMENT CONTROLS 6.1Site Sediment Control System Silt fencing at the limits of construction and inlet filters covering all storm inlets are intended to trap sediment on site and will be constructed as the first steps in grading. These BMPs will be installed before other land-disturbing activities take place. 6.2Dust Control Dust control measures will be utilized during construction when necessary. All Iowa DNR approved dust control methods (vegetative coverings, barriers, irrigation, tillage, etc.) shall be acceptable. 6.3Selected BMPs BMP K: Silt Fence (see drawing D2) BMP J: Storm Drain Inlet Protection (see drawings D3, D4) BMP J: Culvert Inlet Protection (see drawing D6) Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 6-1 Storm Water Pollution Prevention Plan for Construction Activities 7SOIL STABILIZATION This section describes the stabilization and structural BMPs that will be implemented to minimize erosion and the transportation of sediment from the project site into receiving waters. 7.1Soil Stabilization Stabilization BMPs to be implemented at this site include: Soil Covering. All exposed soils will be stabilized with vegetation or covered prior to the onset of the rainy and winter season. The stabilization of all th disturbed areas will be initiated by the 14 day of construction if the area is to be open and not worked for 21 days. The primary stabilization method used will be covering soils with an approved matting and/or hydroseeding. This will be done on all slopes as well as swales and exposed flat surfaces as deemed necessary by the erosion and sediment control leader. Virtually all exposed soils will be stabilized to protect surface water quality. Loose straw covers are not to be used as they may be washed into drainage structures. Stockpile Covering. All temporary soil stockpiles will be temporarily seeded. Long-term stockpiles will be compacted and hydroseeded prior to the onset of wet weather if left undisturbed for 30 days or more. Maintenance of Existing Vegetation. Existing and new vegetation will be maintained to the maximum extent practicable to prevent the contamination of storm water with sediment. Vegetated areas beginning to show signs of erosion or soil transport will be repaired and temporarily reseeded. Outlet Protection. Adequate energy dissipation, erosion control, and soil stabilization measures (e.g., rock or other energy dissipation techniques) will be provided for all point source discharges of storm water, including run-on discharges and outlets from onsite discharges as required. Inlet protection. All storm drain inlets, including those made operable during the project, will be properly protected and maintained using approved inlet protection devices. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 7-1 Storm Water Pollution Prevention Plan for Construction Activities 7.2Structural BMPs Structural BMPs. Structural BMPs are practices designed to divert flows from exposed soil, store storm water runoff, and limit runoff and the discharge of pollutants from exposed areas of the project. The goal of structural BMPs on this project is to protect receiving water downstream of the site from turbid water, phosphorus, sediment, oil, and other contaminants, which may mobilize in storm water flows. Temporary Silt Fence. Silt fencing will be placed along the limits of construction. The fence will filter and slow runoff from the disturbed areas. Temporarily Modified Catchment Structures. Storm sewer structures will have a temporary inlet sediment filter inserted to trap sediment before it enters the storm water sewer system. The filter will be a sack insert or a silt fence with geotextile blanket. Existing Development Storm Water Detention Area. The existing permanent development storm water detention area is located southeast of the proposed site. The majority of the post construction runoff will be conveyed through the development detention area. This will allow the storm water runoff to be filtered from sediment and debris prior to discharging through a restricted outlet. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 7-2 Storm Water Pollution Prevention Plan for Construction Activities 8SLOPE PROTECTION 8.1General Practices Cut and fill slopes on this project have been designed and will be constructed to minimize erosion. Soil types have also been analyzed and considered for their potential to erode. In addition, slope runoff velocities will be reduced by temporary seeding and/or permanent seeding or sodding of the proposed site. All proposed seeding areas where the grade is sloped shall be covered with sod as soon as possible upon final grading. The critical areas are the limits of construction. 8.2Suggested BMPs BMP D: Temporary Seeding BMP H: Permanent Sodding Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 8-1 Storm Water Pollution Prevention Plan for Construction Activities 9DRAIN INLET PROTECTION 9.1Existing Storm Drains Existing storm drain inlets and culverts will be protected to prevent storm water from entering without first being filtered or treated to remove sediment. 9.2Newly Constructed Storm Drains All storm drain inlets and culverts made operable during construction will be protected to prevent storm water from entering without first being filtered or treated to remove sediment. 9.3Suggested BMP BMP J: Storm Drain Inlet Protection (see drawings D3, D4) BMP J: Culvert Inlet Protection (see drawing D6) Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 9-1 Storm Water Pollution Prevention Plan for Construction Activities 10STORM WATER OUTLET PROTECTION Storm water from the proposed site collects in the proposed storm sewer catch basins, is conveyed into either the existing development detention area or the existing municipal storm sewer conveyance system. The development detention area and the municipal storm sewer conveyance system eventually discharge to the Iowa River. 10.1Treatment System Outlet to Stream NA 10.2Street Drainage to Stream NA 10.3Bypass Drainage to Stream NA 10.4Suggested BMPs NA Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 10-1 Storm Water Pollution Prevention Plan for Construction Activities 11SPILL PREVENTION AND RESPONSE Consistent with the general permit requirements, all potential pollutants other than sediment will be handled and disposed of in a manner that does not cause contamination of storm water. Non-sediment pollutants that may be present during construction activities include: Petroleum products including fuel, lubricants, hydraulic fluids, and form oils Water treatment chemicals (coagulant, acid, sodium bicarbonate) Concrete Paints Fertilizers These materials, and other materials used during construction with the potential to impact storm water, will be stored, managed, used, and disposed of in a manner that minimizes the potential for releases to the environment and especially into storm water. Emergency contacts for the project will be posted at the project office and are included at the end of this section. 11.1General Materials Handling Practices The following general practices will be used throughout the project to reduce the potential for spills. Potential pollutants will be stored and used in a manner consistent with the manufacturer’s instructions in a secure location. To the extent practicable, material storage areas should not be located near storm drain inlets and should be equipped with covers, roofs, or secondary containment as needed to prevent storm water from contacting stored materials. Chemicals that are not compatible (such as sodium bicarbonate and hydrochloric acid) shall be stored in segregated areas so that spilled materials cannot combine and react. Materials disposal will be in accordance with the manufacturer’s instructions and applicable local, state, and federal regulations. Materials no longer required for construction will be removed from the site as soon as practicable. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 11-1 Storm Water Pollution Prevention Plan for Construction Activities Adequate garbage, construction waste, and sanitary waste handling and disposal facilities will be provided to the extent necessary to keep the site clear of obstruction and BMPs clear and functional. 11.2Specific Materials Handling Practices All pollutants, including waste materials and demolition debris, that occur on- site during construction will be handled in a way that does not contaminate storm water. All chemicals including liquid products, petroleum products, water treatment chemicals, and wastes stored on site will be covered and contained and protected from vandalism. Maintenance and repair of all equipment and vehicles involving oil changes, hydraulic system drain down, de-greasing operations, fuel tank drain down and removal, and other activities which may result in the accidental release of contaminants, will be conducted under cover during wet weather and on an impervious surface to prevent the release of contaminants onto the ground. Materials spilled during maintenance operations will be cleaned up immediately and properly disposed of. Wheel wash water will be settled and discharged on site by infiltration. Wheel wash water will not be discharged to the storm water system or the storm water treatment system. A concrete washout area (see drawing D5) shall be utilized on-site. The washout area shall be located outside of the public right-of-way and at least fifty feet from open drainage facilities or watercourses. When the volume of the washout area is 75% full, the hardened concrete shall be removed and transported to a legal landfill. Waste concrete shall not be buried on-site. Application of agricultural chemicals, including fertilizers and pesticides, will be conducted in a manner and at application rates that will not result in loss of chemical to storm water runoff. Manufacturers’ recommendations will be followed for application rates and procedures. pH-modifying sources will be managed to prevent contamination of runoff and storm water collected on site. The most common sources of pH-modifying materials are bulk cement, cement kiln dust (CKD), fly ash, new concrete washing and curing waters, waste streams generated from concrete grinding and sawing, exposed aggregate processes, and concrete pumping and mixer washout waters. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 11-2 Storm Water Pollution Prevention Plan for Construction Activities 11.3Spill Response The primary objective in responding to a spill is to quickly contain the material(s) and prevent or minimize their migration into storm water runoff and conveyance systems. If the release has impacted on-site storm water, it is critical to contain the released materials on site and prevent their release into receiving waters. If a spill of pollutants threatens storm water at the site, the spill response procedures outlined below must be implemented in a timely manner to prevent the release of pollutants. The site superintendent will be notified immediately when a spill, or the threat of a spill, is observed. The superintendent will assess the situation and determine the appropriate response. If spills represent an imminent threat of escaping Emergency Spill Containment (ESC) facilities and entering the receiving waters, facility personnel will respond immediately to contain the release and notify the superintendent after the situation has been stabilized. Spill kits containing materials and equipment for spill response and cleanup will be maintained at the site. Each spill kit may contain: Oil absorbent pads (one bale) Oil absorbent booms (40 feet) 55-gallon drums (2) 9-mil plastic bags (10) Personal protective equipment including gloves and goggles The site superintendent, or his designee, will be responsible for completing the spill reporting form and for reporting the spill to the appropriate state or local agency within 14 days (see Forms at the end of this section). Facility personnel with primary responsibility for spill response and cleanup will receive training from the site superintendent. This training will include identifying the location of spill kits and other spill response equipment and the use of spill response materials. Spill response equipment will be inspected and maintained as necessary to replace any materials used in spill response activities. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 11-3 Storm Water Pollution Prevention Plan for Construction Activities 11.4Notification In the event of a spill, make the appropriate notification(s) consistent with the following procedures: Any spill of oil which 1) violates water quality standards, 2) produces a “sheen” on a surface water, or 3) causes a sludge or emulsion must be reported immediately by telephone to the National Response Center Hotline at (800) 424-8802. Any oil, hazardous substance, or hazardous waste release which exceeds the reportable quantity must be reported immediately by telephone to the National Response Center Hotline at (800) 424-8802. Any spill of oil or hazardous substance to waters of the state must be reported immediately by telephone to the Iowa DNR’s Emergency Response & Homeland Security Unit at (515) 281-8694. Any release of a hazardous substance that may be a threat to human health or the environment must be reported to the Iowa DNR’s Emergency Response & Homeland Security Unit at (515) 281-8694 immediately upon discovery. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 11-4 Storm Water Pollution Prevention Plan for Construction Activities 12STORM WATER TREATMENT 12.1Storm Water Collection System During all phases of construction and grading the contractor will provide storm water collection and conveyance systems to collect and direct sediment contaminated water to temporary adequately sized sediment traps as needed to prevent offsite discharge of sediment laden storm water. Construction will occur in a manner as much as practicable to avoid unnecessarily exposing vegetated areas of the site. Clean storm water, generated from stabilized and undisturbed portions of the site, will be collected and conveyed to stabilized discharge areas whenever necessary to avoid contact with disturbed portions of the site. All conveyance and collection systems will be constructed consistent with State and local BMP requirements. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 12-1 Storm Water Pollution Prevention Plan for Construction Activities 13BMP MAINTENANCE All temporary and permanent erosion and sediment control BMPs will be maintained and repaired as needed to assure continued performance of their intended function. All maintenance and repair will be conducted in accordance with BMPs. Recommended BMP maintenance requirements are listed in Table 1. Following Table 1 is a BMP Inspection Checklist for use in routine inspections of the construction site. The general contractor shall be responsible for constructing and maintaining all erosion control BMP’s during all phases of construction. All temporary erosion and sediment control BMPs will be removed within 30 days after final site stabilization is achieved or after the temporary BMPs are no longer needed. Disturbed soil areas resulting from removal of BMPs or vegetation will be permanently stabilized as soon as possible. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 13-2 Storm Water Pollution Prevention Plan for Construction Activities Table 1 BMP Maintenance and Inspection Schedule BMPBMP Name Recommended Maintenance Recommended Designation Schedule of Maintenance A Buffer Zones Inspect the area frequently to make sure flagging remains in Daily place and the area remains undisturbed. BStabilizedQuarry spalls (or hog fuel) shall be added if the pad is no Daily Construction longer in accordance with the specifications. If the rock (or Entrance and hog fuel) entrance is not working to keep streets clean, then Tire Wash install wheel wash, sweep streets, or wash streets if wash water can be collected. CWheel Wash Wheel wash water shall not be discharged into a storm drain Daily (if necessary) or the site’s storm water collection system. Use closed-loop recirculation, or land application. DTemporary & Re-seed areas failing to establish 80% cover within one Inspect to ensure Permanent month (during growing season). If re-seeding is ineffective, growth weekly Seedinguse sodding or nets/blankets. Eroded areas shall be corrected, re-planted, and irrigated as required. E Mulching Maintain specified thickness of mulch cover. Eroded areas Weekly and must be corrected and re-mulched. Drainage problems must following storms be corrected. Nets and Inspect to ensure good contact with ground and no erosion of Weekly and F Blankets soils. Replace damaged material and re-staple where following storms required. Correct erosion problems immediately. GPlasticReplace torn sheets and repair open seams. Replace Weekly Covering deteriorated plastic sheets. Dispose of plastic when no longer needed. H Sodding If sod is unhealthy correct problem. If sod can’t be Weekly and established seed area and use net or blanket to stabilize soils. following storms I Top Soiling Inspect stockpiles regularly, especially after large storm Weekly and events. Stabilize areas that have eroded. following storms JStorm Drain Replace clogged filter fabric. Clean sediment from stone Weekly and Inlet filters. Do not wash collected sediments into storm drains – following storms Protection remove to soil stockpile. Repair damaged fencing immediately. Intercept concentrated Weekly and K Silt Fence flows and reroute. Remove sediment accumulations at 6-following storms inches. Replace deteriorated fencing material. Properly dispose of used fencing. LConcrete When the volume of the washout is 75% full, the hardened Daily Washout concrete shall be removed and transported to a legal landfill. Waste concrete shall not be buried on-site. Straw Wattle Remove sediment accumulations at 6-inches. Replace and Weekly and M Ditch Check properly dispose of if deteriorated. following storms NErosionRemove sediment accumulations at 6-inches. Replace and Weekly and Blanket properly dispose of if deteriorated. following storms Storm Water Pollution Prevention Plan for Construction Activities 14PROJECT MANAGEMENT Implementation and management of the environmental aspects of this project under the SWPPP are the responsibilities of ALDI Inc. and the general contractor. Communication between all parties performing work on the site is essential for proper implementation of the SWPPP. The general contractor, utility installation contractor, and grading contractor should all be familiar with the SWPPP and their responsibilities under the plan. To help delegate these responsibilities the following outline has been provided: 14.1Soil Erosion & Sedimentation Control Sequence of Operation Mobilize the site and mark clearing and construction limits Install soil erosion control measures Construct stabilized construction entrance Topsoil stripping and stockpiling. Provide temporary seeding on stockpiles and all other areas of the site that will remain undisturbed for 30 days or more. Mass grading of disturbed site Installation of building foundations Installation of all underground utilities Preparation of pavement subgrade material Installation of pavement base course material Installation of permanent soil stabilization measures Installation of final landscape plantings and material Remove temporary soil erosion control measures after final soil stabilization measures and the establishment of adequate vegetative cover 14.2Seasonal Work The soil erosion and sedimentation control plan has been designed to allow for work on the project during the winter months if necessary. Some construction activities may need to be postponed if scheduled during ongoing storm events. Activities such as grading and trenching in areas directly adjacent to proposed catch basins or existing storm inlets during rainstorms could easily result in sediment-contaminated storm water reaching the existing storm water conveyance system. This work would therefore be performed within a window of dry weather predicted on the basis of weather reports. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 14-1 Storm Water Pollution Prevention Plan for Construction Activities 14.3Training The contractor will provide onsite training to key personnel responsible for compliance with the SWPPP. The contractor’s superintendent and project manager will be familiarized with the major elements of the plan. Construction workers and others at the site will be given appropriate training information at the conclusion of site safety meetings or on an as-needed basis. 14.4Pre-construction Conference One or more pre-construction meetings will be held with an agenda item addressing the SWPPP. 14.5Coordination with Utilities and other Contractors All contractors providing services on the project which may cause storm water pollution will be given a copy of the SWPPP and appropriate training regarding storm water pollution prevention. 14.6Subcontractor Oversight Subcontractor oversight to ensure compliance with the SWPPP will be provided by the general contractor’s superintendent or project manager. Informal, on-the-job tailgate training will be the first level of communication followed by onsite observation of training compliance. Non-compliance with SWPPP policies will trigger a more intensive training session to correct the problem(s). Chronic non-compliance with SWPPP policies may require the intervention of local and/or state regulatory personnel. 14.7Monitoring/Reporting Water quality conditions at the site will be monitored by the general contractor’s qualified technician on a regular basis. Additional reports such as erosion and sediment control inspections will be the responsibility of the general contractor or a designated consultant. Spill reports will be completed and submitted by the general contractor on the project. 14.8SWPPP Update The SWPPP will be updated by the site owner or their agent to address changes in site conditions, new or revised government regulations, and additional on-site storm water pollution controls as required by the site owner, the permitting authority and the municipality. Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 14-2 Storm Water Pollution Prevention Plan for Construction Activities APPENDIX A NPDES STORM WATER PERMIT, AND STATE WATER QUALITY STANDARDS Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 IOWA DEPARTMENT OF NATURAL RESOURCES NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT NO. 2 EFFECTIVE DATES OCTOBER 1, 2012 THROUGH OCTOBER 1, 2017 FOR STORM WATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES 502 EAST 9th STREET DES MOINES, IOWA 50319 515-281-7017 FAX 515-281-8895 www.iowadnr.gov/water/stormwater/index.html NPDES GENERAL PERMIT NO. 2 TABLE OF CONTENTS PART I. COVERAGE UNDER THIS PERMIT ..................................................................................... 1 A.PA. ..................................................................................................................................... 1 ERMITREA B.E. ........................................................................................................................................ 1 LIGIBILITY C.RIP. ................................................................................................ 1 EQUIRING AN NDIVIDUALERMIT D.A. ................................................................................................................................ 2 UTHORIZATION PART II. NOTICE OF INTENT (NOI) REQUIREMENTS ................................................................. 2 A.DFNI. ................................................................................. 2 EADLINES FOR ILING A OTICE OF NTENT B.FN. ........................................................................................................................... 2 AILURE TO OTIFY C.CNI. ............................................................................................ 2 ONTENTS OF THE OTICE OF NTENT D.WS. ............................................................................................................................ 3 HERE TO UBMIT E.R. ................................................................................................................................ 3 ENOTIFICATION F.TCUP. .............................................................................. 3 RANSFER OF OVERAGENDER THIS ERMIT G.ND. ......................................................................................................... 4 OTICE OF ISCONTINUATION PART III. SPECIAL CONDITIONS, MANAGEMENT PRACTICES, AND OTHER NON- NUMERIC LIMITATIONS ....................................................................................................................... 4 A.PN-SWD. ..................................................................... 4 ROHIBITION ON ONTORMATERISCHARGES B.RERQ. ...................................................................... 4 ELEASES IN XCESS OF EPORTABLEUANTITIES PART IV. STORM WATER POLLUTION PREVENTION PLANS .................................................. 5 A.DPPPPC. ................... 5 EADLINES FOR OLLUTIONREVENTIONLANREPARATION AND OMPLIANCE B.SPR. ......................................................................................................... 5 IGNATURE AND LANEVIEW C.KPC. ................................................................................................................ 5 EEPINGLANSURRENT D.CPPP. ........................................................................ 6 ONTENTS OF THE OLLUTIONREVENTIONLAN PART V. RETENTION OF RECORDS ................................................................................................ 10 PART VI. STANDARD PERMIT CONDITIONS ................................................................................ 11 A.DC. ............................................................................................................................ 11 UTY TO OMPLY B.CEGP. .................................................................... 11 ONTINUATION OF THE XPIRED ENERALERMIT C.NHRAND. ............................................................... 11 EED TO ALT OR EDUCECTIVITYOT A EFENSE i D.DM. ......................................................................................................................... 11 UTY TO ITIGATE E.DPI. .................................................................................................. 11 UTY TO ROVIDENFORMATION F.OI. ...................................................................................................................... 11 THERNFORMATION G.SR. ........................................................................................................... 11 IGNATORYEQUIREMENTS H.C. ................................................................................................................................ 12 ERTIFICATION I.OHSL. ................................................................................. 12 IL AND AZARDOUS UBSTANCEIABILITY J.PR. ............................................................................................................................ 12 ROPERTYIGHTS K.S. .................................................................................................................................. 12 EVERABILITY L.T. ....................................................................................................................................... 12 RANSFERS M.POM. ..................................................................................... 12 ROPERPERATION AND AINTENANCE N.IE. .................................................................................................................. 12 NSPECTION AND NTRY O.PA. ............................................................................................................................. 13 ERMITCTIONS P.EL. .................................................................................................................. 13 NVIRONMENTALAWS PART VII. REOPENER CLAUSE ........................................................................................................ 13 PART VIII.DEFINITIONS .................................................................................................................... 13 ii IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER PARTI.COVERAGEUNDERTHISPERMIT. storm water discharges associated with B industrial activity for construction activities A.PA This permit covers all areas of which are covered by an existing individual ERMITREA the State of Iowa. NPDES permit or which are issued a permit in accordance with Part I.C. of this permit. BE . LIGIBILITY Storm water discharges authorized by an 1.. Except for discharges identified under existing individual NPDES permit will be A Parts I.B.2. and I.B.3., this permit may eligible to apply for coverage under this authorize the discharge of storm water general permit as the existing individual associated with industrial activity from permit expires; and construction sites, (those sites or common . plans of development or sale that will result in storm water discharges associated with C the disturbance of one or more acres total land industrial activity for construction activities area), (hereafter referred to as storm water that the Iowa Department of Natural discharge associated with industrial activity Resources has determined to be or may for construction activities) occurring after the reasonably be expected to be contributing to a effective date of this permit (including violation of a water quality standard. discharges occurring after the effective date of . this permit where the construction activity new or expanded “storm water discharge D was initiated before the effective date of this associated with industrial activity” that permit), including storm water discharge discharges to Outstanding Iowa Waters or to associated with industrial activity from areas Outstanding National Resource Waters. that are dedicated to producing earthen 3.E materials, such as soils, sand and gravel, for The following “storm water XCLUSIONS use at a single construction site. discharges associated with industrial activity” from construction activities do not require a . This permit may authorize storm water NPDES permit: B discharge from a construction site that is mixed with storm water discharge associated discharges from agricultural and silvicultural with industrial activity from sources other activities including storm water runoff from than construction activities provided that the orchards, cultivated crops, pastures, range storm water discharge from the industrial lands, and forest lands, but not discharges (non-construction) source is in compliance from concentrated animal feeding operations with the terms of a NPDES general permit, as defined in 40 CFR 122.23, concentrated other than this general permit, or individual aquatic production facilities as defined in 40 permit authorizing such discharge. In CFR 122.24, discharges to aquaculture addition, the storm water other than from projects as defined in 40 CFR 122.25, and construction, shall be in compliance with Part discharges from silvicultural point sources as IV.D.6. of this permit. defined in 40 CFR 122.27. 2.LCC. RIP The following IMITATIONS ON OVERAGEEQUIRING AN NDIVIDUALERMIT storm water discharges associated with 1. industrial activity for construction activities The Department may require any person not are authorized by this permit: authorized by this permit to apply for and obtain an individual NPDES permit. The . storm water discharges that are mixed Department may require any owner or A with sources of non-storm water other than operator authorized to discharge under this discharges identified in Part III.A.2. of this permit to apply for an individual NPDES permit; permit only if the owner or operator has been notified in writing that a permit application is required. This notice shall include a brief 1 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER statement of the reasons for this decision, an PARTII.NOTICEOFINTENT(NOI) application form, a statement setting a REQUIREMENTS deadline for the owner or operator to file the application, and a statement that on the A.DFN effective date of the individual NPDES EADLINES FOR ILING A OTICE OF I permit, coverage under this general permit NTENT shall automatically terminate. If an owner or operator fails to submit an individual NPDES For storm water discharge associated with permit application required by the Department industrial activity for construction activities under this paragraph, coverage of this general where construction begins after October 1, permit automatically is terminated at the end 1992, construction activities shall not of the day specified for submittal of the commence until an authorization has been individual NPDES application. issued for the project by the Department. 2.B.FN Any person authorized to discharge under this Dischargers who fail to AILURE TO OTIFY permit may apply for an individual NPDES notify the Department of their intent to be permit. In such cases, the discharger shall covered, and discharge pollutants to water of submit the following in accordance with the the United States within Iowa, without an requirements of subrule (567)--64.3(4) in the NPDES permit, are in violation of the Clean Iowa Administrative Code: Water Act and the Code of Iowa. .C.CNI an individual application, using DNR A AONTENTS OF THE OTICE OF NTENT Form 1 and EPA Form 2F, and, complete Notice of Intent shall include the items described in Parts II.C.1., II.C.2., and . all applicable fees identified in rule II.C.3. of this permit. B (567)--64.16 in the Iowa Administrative 1. Code. A completed Notice of Intent (NOI) form, DNR Form 542-1415, signed in accordance 3. When an individual NPDES permit is issued with Part VI.G. of this permit. The to a discharger covered under this general information on the form shall include the permit, the applicability of this general permit following: to the individual NPDES permittee is . automatically terminated on the effective date Name, address, and location of the A of the individual NPDES permit. construction site for which this notification is submitted. The location should be provided When an individual NPDES permit is denied as the 1/4 section, township, range, and the to a discharger otherwise subject to this county in which the storm water discharge is permit, the applicability of this permit to the located. individual NPDES permittee is automatically . terminated on the date of such denial, unless The owner's name, address, telephone B otherwise specified by the Department. number, and status (federal, state, private, public or other entity). D. A UTHORIZATION . The name, address and telephone C A discharger must submit a Notice of Intent number of any operator (contractor) that has (NOI) in accordance with the requirements of been identified as having a role in the storm Part II of this permit in order for storm water water pollution prevention plan for the site discharge associated with industrial activity required under Part IV.D.7. of this permit. for construction activities pursuant to Part I.B. Contractors (operators) identified after the of this permit to be authorized to discharge submittal of the completed Notice of Intent under this general permit. shall be identified in the pollution prevention plan. 2 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER 2.AF The applicable fees PPLICABLEEES . The type of discharge (new or existing specified in Iowa Administrative Code 567 -- D as related to October 1, 1992); whether or not 64.16(455B). the discharge is to a municipal separate storm 3.PN sewer system; the date the discharge is to A demonstration that UBLICOTIFICATION commence; the permit status of the discharge; the public notice specified in Iowa and, the name of the receiving waters. Administrative Code 567--64.6(1)"c"(2) was published at least one day, in at least two . An indication if any existing quantitative newspapers with the largest circulation in the E data is available describing the concentration area in which the facility is located or the of pollutants in storm water discharges and a activity will occur. summary of available existing data. (Existing D.WS data should not be included as part of the Facilities which HERE TO UBMIT NOI, it should retained as part of the Pollution discharge storm water associated with Prevention Plan). industrial activity for construction activities must submit items described in Parts II.C.1., . A brief description of the project; an 2., and 3. of this permit to the Department at F estimated timetable for major activities; and, the following address: an estimate of the number of acres of the site on which soil will be disturbed. Storm Water Coordinator Iowa Department of Natural Resources . A certification that compliance with 502 E. 9th St. G G.(1).G.(4). through are met: Des Moines, IA 50319-0034 .(1).E.R the pollution prevention plan has Prior to the expiration of GENOTIFICATION been developed before this Notice of Intent is an authorization issued under this general submitted to the Department; permit, the permittee is required to resubmit a Notice of Intent (no additional public notices .(2). the pollution prevention plan will are required) with the Department for G be implemented on October 1, 1992 for any coverage under the new general permit. If a existing storm water discharge associated with new general permit has not been reissued industrial activity for construction activities. prior to the expiration of the current permit, For a storm water discharge associated with the provisions and coverage of the current industrial activity for construction activities permit are extended until replaced by the that commence after October 1, 1992, the adoption of a new general permit. pollution prevention plan shall be F. TCU implemented with the start of construction RANSFER OF OVERAGENDER THIS P activities; For storm water discharge associated ERMIT with industrial activity for construction .(3). this Notice of Intent will be activities where the ownership changes, the G included and incorporated into the pollution Department must be notified of the title prevention plan and will be updated as transfer within 30 days. Both the previous required; and, owner(s) and the new owner(s) are responsible for notifying the Department of .(4). the storm water pollution the transfer and the new owner’s name and G prevention plan provides compliance with contact information. This requirement shall section 467A.64 of the Code of Iowa and be satisfied upon the Department’s receipt of local sediment and erosion plans and are the notification of this information by either consistent with the requirements of Part IV of the previous owner(s) or the new owner(s). If this general permit. a storm water discharge associated with industrial activity for construction activities is covered by this general permit, the new 3 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER owner(s) shall be subject to all terms and control measures have been removed or will conditions of this general permit. A copy of be removed at an appropriate time. I the notice of transfer that was sent to the understand that by submitting this Notice of Department shall be included in the pollution Discontinuation, that I am no longer prevention plan. For construction activity authorized to discharge storm water which is part of a larger common plan of associated with industrial activity for development such as a housing or commercial construction activities by Iowa Department of development project, if a permittee transfers Natural Resources General NPDES Permit ownership of all or any part of property No. 2. and that discharging pollutants from subject to this permit, both the permittee and storm water associated with industrial activity transferee shall be responsible for compliance to waters of the United States is unlawful with the provisions of this permit for that under the Clean Water Act where the portion of the project which has been discharge is not authorized by a NPDES transferred including when the transferred permit." property is less than one acre in area. If the new owner(s) agree in writing to be solely PARTIII.SPECIALCONDITIONS, responsible for compliance with the MANAGEMENTPRACTICES,ANDOTHER provisions of this permit for the property NON-NUMERICLIMITATIONS which has been transferred, then the existing permittee(s) shall be relieved of responsibility A.PN-SW for compliance with this permit for the ROHIBITION ON ONTORM ATER D transferred property, from and after the date ISCHARGES the Department receives written notice of 1. transfer of responsibility. A copy of the All discharges authorized by this permit shall notice of transfer of responsibility shall be be composed entirely of storm water except included in the pollution prevention plan. for non-storm discharges listed in Part III.A.2. G.ND2. Discharges from fire fighting activities; fire OTICE OF ISCONTINUATION hydrant flushings; waters used to wash 1. Within 30 days after final stabilization at a vehicles in accordance with Part construction site (as defined in Part VIII of IV.D.2..(2).; potable water sources including C this permit), the operator or owner of the waterline flushings; irrigation drainage; facility shall submit a Notice of routine external building washdown which Discontinuation to the Department. does not use detergents; pavement washwaters where spills or leaks of toxic or hazardous 2. The Notice of Discontinuation shall include materials have not occurred (unless all spilled the following information: material has been removed) and where detergents are not used; air conditioning . the name of the owner/operator to which condensate; springs; uncontaminated A the permit was issued; groundwater; and foundation or footing drains where flows are not contaminated with . the general permit number and permit process materials such as solvents; may be B authorization number; authorized by this permit provided the non- storm water component of the discharge is in . the date the construction site reached compliance with Part IV.D.5. of this permit. C final stabilization; and, .B.RER the following certification signed in DELEASES IN XCESS OF EPORTABLE Q accordance with Part VI.G. of this permit: Any owner or operator identified in the UANTITIES pollution prevention plan is subject to the spill "I certify under penalty of law that disturbed notification requirements as specified in 455B.386 soils at the identified facility have been finally of the Iowa Code. Iowa law requires that as soon as stabilized and temporary erosion and sediment possible but not more than six hours after the onset of 4 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER a "hazardous condition" the Department and local B.SPR sheriff's office or the office of the sheriff of the IGNATURE AND LANEVIEW affected county be notified. 1. The plan shall be signed in accordance with The storm water pollution prevention plan described Part VI.G., and be retained at the construction in Part IV of this permit must be modified within 5 site from the date construction activities begin calendar days of knowledge of the release to provide to the date of final stabilization. a description of the release and the circumstances 2. leading to the release and to identify and provide for The permittee shall make plans available to the implementation of steps to prevent the the Department upon request, or in the case of reoccurrence of such releases and to respond to such a storm water discharge associated with releases.industrial activity for construction activities which discharge through a municipal separate storm sewer system with an NPDES permit, to PARTIV.STORMWATERPOLLUTION the municipal operator of the system. PREVENTIONPLANS 3. The Department may notify the permittee at A storm water pollution prevention plan shall be any time that the plan does not meet one or developed for each construction site covered by this more of the minimum requirements of this permit. Storm water pollution prevention plans shall Part. After such notification from the be prepared in accordance with good engineering Department, the permittee shall make changes practices. The plan shall identify potential sources of to the plan and shall submit to the Department pollution which may reasonably be expected to affect a written certification that the requested the quality of the storm water discharge from the changes have been made. Unless otherwise construction activities. In addition, the plan shall provided by the Department, the permittee describe and ensure the implementation of practices shall have 3 business days after such which will be used to reduce the pollutants in storm notification to make the necessary changes. water discharge associated with industrial activity for 4. construction activities at the construction site and to All storm water pollution prevention plans assure compliance with the terms and conditions of received by the Department from the this permit. Facilities must implement the provisions permittee are considered reports that shall be of the storm water pollution prevention plan required available to the public under Section 308(b) of under this part as a condition of this permit. the CWA and Chapter 22 of the Code of Iowa. However, the permittee may claim any A.DPP portion of a storm water pollution plan as EADLINES FOR OLLUTION REVENTION PPC confidential in accordance with Chapter 22 of LANREPARATION AND OMPLIANCE the Code of Iowa and Iowa Administrative 1.PPP Code (561)--2.5. OLLUTION REVENTIONLAN PD The pollution REPARATIONEADLINE PC prevention plan shall be completed prior to C. K The permittee EEPING LANSURRENT the submittal of an NOI to the Department to shall amend the plan whenever there is a be covered under this permit and shall be change in design, construction, operation, or updated as appropriate. maintenance, which has a significant effect on the potential for the discharge of pollutants to 2. PPP the waters of the United States and which has OLLUTION REVENTIONLAN CD The pollution not been addressed in the plan or if the storm OMPLIANCEEADLINE prevention plan shall provide for compliance water pollution prevention plan proves to be with the terms and schedule of the plan prior ineffective in eliminating or significantly to the initiation of construction activities. minimizing pollutants from sources identified in Part IV.D.2. of this permit, or in otherwise achieving the general objectives of controlling pollutants in storm water discharge associated 5 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER 2. C with industrial activity for construction Each plan shall include a ONTROLS activities. In addition, the pollution description of controls that will be prevention plan shall be updated to: implemented at the construction site. The expeditiously change the site map to include plan will clearly describe the intended changes at the site, include contractors sequence of major activities and for each identified after the submittal of the Notice of activity, the appropriate control measures and Intent as Co-permittees, described in Part the timing during the construction process that IV.D.7. of this permit; identify any change in the measures will be implemented. (For ownership or transference of the permit and example, perimeter controls for one portion of permit responsibilities; or, if required, by the the site will be installed after the clearing and occurrence of a hazardous condition (as grubbing necessary for installation of the defined in Part VIII of this permit). measure, but before the clearing and grubbing Amendments to the plan may be reviewed by for the remaining portions of the site. the Department of Natural Resources in the Perimeter controls will be actively maintained same manner as Part IV.B.2. until final stabilization of those portions of the site upward of the perimeter control. D. CPP Temporary perimeter controls will be ONTENTS OF THE OLLUTION REVENTION P. The storm water pollution prevention removed after final stabilization). The LAN plan shall include the following items: description of controls shall address the following minimum components: 1.SD Each plan shall provide a ITEESCRIPTION .ESC description of the following: AROSION AND EDIMENTONTROLS ..(1). SP a description of the nature of the A AATABILIZATION RACTICES construction activity; description of temporary and permanent stabilization practices, including site-specific . estimates of the total area of the site and scheduling of the implementation of the B the area of the site that is expected to be practices. Site plans should ensure that disturbed by excavation, grading, or other existing vegetation is preserved where activities; attainable and that disturbed areas are stabilized. Stabilization practices may . an estimate of the runoff coefficient of include: temporary seeding, permanent C the site after construction activities are seeding, mulching, geotextiles, sod completed and existing data describing the stabilization, vegetative buffer strips, soil or the quality of any discharge from the protection of trees, preservation of mature site;vegetation, and other appropriate measures. Except as precluded by snow cover, . a site map indicating drainage patterns stabilization measures shall be initiated on all D and approximate slopes anticipated after disturbed areas as soon as practical but in no major grading activities, areas of soil case where construction activity will not occur disturbance, the location of structural and for a period of 21 or more calendar days later nonstructural controls identified in the plan, than the 14th day after no construction the location of areas where stabilization activity has occurred on such area. Where the practices are expected to occur, surface waters initiation of stabilization measures by the 14th (including wetlands), and locations where day after no construction activity occurs is storm water is discharged to a surface water; precluded by snow cover, then stabilization andmeasures shall be initiated as soon as practicable thereafter. . the name of the receiving water(s) and E .(2). SP the ultimate receiving water(s). A ATRUCTURALRACTICES description of structural practices to the degree attainable, to divert flows from 6 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER preserved at all construction sites unless land exposed soils, store flows or otherwise limit use precludes the practice. The requirement runoff from exposed areas of the site. Such to preserve topsoil shall be met only when the practices may include silt fences, earth dikes, depth of topsoil after soil disturbing activities brush barriers, drainage swales, sediment have been completed and final stabilization traps, check dams, subsurface drains, pipe achieved for the permitted activity is equal to, slope drains, level spreaders, storm drain inlet or greater than, 4.0 inches, including soil protection, rock outlet protection, reinforced contained in sod, on all areas of the site where soil retaining systems, gabions, and temporary the surface of the ground disturbed for the or permanent sediment basins. Structural permitted construction activities is exposed practices should be placed on upland soils to and not covered by concrete, asphalt, gravel the degree attainable. The installation of these or other such material and where 4.0 inches or devices may be subject to Section 404 of the more of topsoil existed prior to the CWA. commencement of soil disturbing activities that are permitted under the current permit .(2).(). a For common drainage locations A authorization for the site. On areas where less that serve an area with more than 10 disturbed than 4.0 inches of topsoil existed prior to the acres at one time, a temporary or permanent commencement of soil disturbing activities sediment basin providing 3,600 cubic feet of that are permitted under the current permit storage per acre drained shall be provided authorization for the site, the minimum depth where attainable until final stabilization of the of topsoil after soil disturbing activities have site has been achieved. The 3,600 cubic feet been completed and final stabilization of storage area per acre drained does not achieved for the permitted activity shall be apply to flows from offsite areas and flows equal to, or greater than, the depth of topsoil from onsite areas that are either undisturbed that existed prior to the commencement of soil or have undergone final stabilization where disturbing activities that are permitted under such flows are diverted around the sediment the current permit authorization for the site. basin. For drainage locations which serve more than 10 disturbed acres at one time and The final topsoil depth is to be measured after where a temporary sediment basin providing the soil has been compacted in a fashion 3,600 cubic feet of storage per acre drained is generally considered adequate for an not attainable, sediment traps, silt fences, or established lawn and so that the expected equivalent sediment controls are required for settling that will occur after measurement will all sideslope and downslope boundaries of the be minimal and shall include the soil construction area. contained in any sod that has been placed on the site. The type of topsoil at the site after .(2).(). b For drainage locations serving soil disturbing activities have been completed A 10 or fewer acres, sediment traps, silt fences and final stabilization achieved for the or equivalent sediment controls are required permitted activity shall be similar to that for all sideslope and downslope boundaries of which exists or existed in the general area of the construction area or a sediment basin the site. providing for 3,600 cubic feet of storage per For construction activity which is part of a acre drained. larger common plan of development, such as a housing or commercial development project, .(2).(c). Unless infeasible, the following A in which a new owner agrees in writing to be measures shall be implemented at all sites: solely responsible for compliance with the utilize outlet structures that withdraw water provisions of this permit for the property from the surface when discharging from which has been transferred or in which the basins, provide and maintain natural buffers new owner has obtained authorization under around surface waters, direct storm water to this permit for a lot or lots (as specified in vegetated areas to increase sediment removal subrule 567-64.6(6) of the Iowa and maximize storm water infiltration and Administrative Code), the topsoil preservation minimize soil compaction. Topsoil shall be 7 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER requirements described above must be met no storm water discharges that will occur after later than at the time the lot or lots have construction operations have been completed. reached final stabilization as described in this The installation of these devices may be permit. subject to Section 404 of the CWA. This For sites where less than 4.0 inches of topsoil permit only addresses the installation of storm is to be in place after soil disturbing activities water management measures, and not the have been completed and final stabilization ultimate operation and maintenance of such achieved for the permitted activity, a soil structures after the construction activities have survey conducted by properly qualified been completed and the site has undergone personnel who regularly conduct soil surveys final stabilization. Permittees are only as part of their normal job duties must be responsible for the installation and conducted prior to commencement of soil maintenance of storm water management disturbing activities that are permitted under measures prior to final stabilization of the site, the current permit authorization for the site. and are not responsible for maintenance after The results of the soil survey shall become storm water discharges associated with part of the Pollution Prevention Plan and shall industrial activity have been eliminated from indicate the depth of topsoil at a suitable the site. number of points on the site commensurate with standard engineering practices .(1). Such practices may include: storm B established for the size of the site. water detention structures (including wet ponds); storm water retention structures; flow The topsoil preservation requirement attenuation by use of open vegetated swales described above shall be implemented for and natural depressions; and infiltration of projects that have not received an runoff onsite; and sequential systems (which authorization under this permit prior to combine several practices). A goal of 80 October 1, 2012. The topsoil preservation percent removal of total suspended solids requirements are not required to be from those flows which exceed implemented for projects that have been predevelopment levels should be used in authorized prior to October 1, 2012. In designing and installing storm water residential and commercial developments, a management controls (where practicable). plat is considered a project. For other large Where this goal is not met, the permittee shall areas that have been authorized for multiple provide justification for rejecting each construction sites, including those to be practice based on site conditions. started at a future date, such as those located at industrial facilities, military installations .(2). Velocity dissipation devices shall be and universities, a new construction project B placed at discharge locations and along the not yet surveyed and platted out is considered length of any outfall channel as necessary to a project. This stipulation is intended to be provide a non-erosive velocity flow from the interpreted as requiring the topsoil structure to a water course so that the natural preservation requirements on development physical and biological characteristics and plats and construction activities on other extended areas that may have several functions are maintained and protected (e.g. construction projects permitted under the maintenance of hydrologic conditions present same authorization to be implemented on prior to the initiation of construction those projects not yet surveyed and platted out activities). prior to October 1, 2012 even if other plats and construction activities in the same . OC CTHER ONTROLS development or other extended area were authorized prior to October 1, 2012. .(1). WD All wastes CASTEISPOSAL composed of building materials must be . SWM A BTORM ATERANAGEMENT removed from the site for disposal in description of measures that will be installed permitted disposal facilities. No building during construction to control pollutants in material wastes or unused building materials 8 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER shall be buried, dumped, or discharged at the warrant them, regular inspections are not site.required on areas that have been stabilized .(2). Off-site vehicle tracking of with a perennial, vegetative cover of sufficient C sediments shall be minimized. density to preclude erosion. .(3).. The plan shall ensure and Disturbed areas and areas used for CA demonstrate compliance with applicable State storage of materials that are exposed to or local waste disposal, sanitary sewer or precipitation shall be inspected for evidence septic system regulations. of, or the potential for, pollutants entering the drainage system. Erosion and sediment . ASLP control measures identified in the plan shall DPPROVEDTATE OR OCALLANS Facilities which discharge storm water be observed to ensure that they are operating associated with industrial activity for correctly. Where discharge locations or construction activities must include in their points are accessible, they shall be inspected storm water pollution prevention plan to ascertain whether erosion control measures procedures and requirements specified in are effective in preventing significant impacts applicable sediment and erosion site plans or to receiving waters. Locations where vehicles storm water management plans approved by enter or exit the site shall be inspected for State or local officials. Applicable evidence of offsite sediment tracking. requirements specified in sediment and . erosion plans, site permits or storm water Based on the results of the inspection, B management plans approved by State or local the description of potential pollutant sources officials that are applicable to protecting identified in the plan in accordance with surface water resources are, upon submittal of paragraph IV.D.1. of this permit and pollution an NOI to be authorized to discharge under prevention measures identified in the plan in this permit, incorporated by reference and are accordance with paragraph IV.D.2. of this enforceable under this permit even if they are permit shall be revised as appropriate as soon not specifically included in a storm water as practicable after such inspection. Such pollution prevention plan required under this modifications shall provide for permit. implementation of any changes to the plan within 7 calendar days following the Operators of facilities seeking alternative inspection. permit requirements shall submit an individual . permit application in accordance with Part A report summarizing the scope of the C I.C.2. of this permit along with a description inspection, name(s) and qualifications of of why requirements in approved State or personnel making the inspection, the date(s) local plans should not be applicable as a of the inspection, major observations relating condition of an NPDES permit. to the implementation of the storm water pollution prevention plan, and actions taken in 3. M A description of procedures accordance with paragraph IV.D.4.. of the AINTENANCE B to maintain in good and effective operating permit shall be made and retained as part of conditions vegetation, erosion and sediment the storm water pollution prevention plan for control measures and other protective at least three years after final stabilization has measures identified in the site plan. been achieved and a Notice of Discontinuation has been submitted to the 4. I Qualified personnel (provided Department. The report shall be signed in NSPECTIONS by the discharger) shall inspect disturbed accordance with Part VI.G. of this permit. areas of the construction site that have not 5.N-SWD been stabilized with a perennial, vegetative Except ONTORM ATERISCHARGES cover of sufficient density to preclude erosion for flows from fire fighting activities, sources at least once every seven calendar days. of non-storm water listed in Part III.A.2. of Unless erosion is evident or other conditions this permit that are combined with storm 9 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER water discharges associated with industrial owner and other co-permittee contractors. All activity from construction activities must be certifications must be included in the storm identified in the plan. The plan shall identify water pollution prevention plan. and ensure the implementation of appropriate . CS pollution prevention measures for the non- All BERTIFICATIONTATEMENT storm water component(s) of the discharge. contractors and subcontractors identified in a storm water pollution prevention plan in 6. ARS accordance with Part IV.D.7.. of this permit DDITIONALEQUIREMENTS FOR TORM A WDI shall sign a copy of the following certification ATERISCHARGE FROM NDUSTRIAL AOC, statement before conducting any professional CTIVITIESTHER THAN ONSTRUCTION , service at the site identified in the storm water INCLUDING DEDICATED ASPHALT PLANTS This pollution prevention plan: AND DEDICATED CEMENT PLANTS permit may only authorize a storm water discharge associated with industrial activity "I certify under penalty of law that I from a construction site that is mixed with a understand the terms and conditions of the storm water discharge from an industrial general National Pollutant Discharge source other than construction, where: Elimination System (NPDES) permit that authorizes the storm water discharges . the industrial source other than associated with industrial activity from the A construction is located on the same site as the construction site as part of this certification. construction activity; Further, by my signature, I understand that I am becoming a co-permittee, along with the . storm water discharges associated with owner(s) and other contractors and B industrial activity from the areas of the site subcontractors signing such certifications, to where construction activities are occurring are the Iowa Department of Natural Resources in compliance with the terms of this permit; NPDES General Permit No. 2 for "Storm and,Water Discharge Associated with Industrial Activity for Construction Activities" at the . storm water discharges associated with identified site. As a co-permittee, I C industrial activity from the areas of the site understand that I, and my company, are where industrial activity other than legally required under the Clean Water Act construction are occurring (including storm and the Code of Iowa, to ensure compliance water discharges from dedicated asphalt with the terms and conditions of the storm plants and dedicated cement plants) are in water pollution prevention plan developed compliance with the terms and conditions, under this NPDES permit and the terms of this including applicable NOI or application NPDES permit." requirements, of a different NPDES general permit or individual permit authorizing such The certification must include the name and discharges. title of the person providing the signature; the name, address and telephone number of the 7.C contracting firm; the address (or other ONTRACTORS identifying description) of the site; and the . The storm water pollution prevention plan date the certification is made. A must clearly identify for each measure in the plan, the contractor(s) and/or subcontractor(s) V.RETENTIONOFRECORDS that will implement the measure. All PART contractors and subcontractors identified in A. the plan must sign a copy of the certification The permittee shall retain copies of storm statement in Part IV.D.7.. of this permit in water pollution prevention plans and all B accordance with Part VI.G. of this permit. reports required by this permit, and records of Upon signing the certification, the contractor all data used to complete the Notice of Intent or sub-contractor is a co-permittee with the to be covered by this permit, for a period of at 10 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER least three years from the date that the site is if this permit has not yet been modified to finally stabilized and a Notice of incorporate the requirement. B. CEG Discontinuation has been submitted to the ONTINUATION OF THE XPIRED ENERAL P Department. This permit expires on October 1, ERMIT 2017. An expired general permit continues in B. If there is a construction trailer, shed or other force until replaced by adoption of a new covered structure located on the property the general permit. permittee shall retain a copy of the storm C.NHRAN water pollution prevention plan required by EED TO ALT OR EDUCECTIVITYOT A D this permit at the construction site from the It shall not be a defense for a EFENSE date of project initiation to the date of final permittee in an enforcement action that it stabilization. If there is no construction would have been necessary to halt or reduce trailer, shed or other covered structure located the permitted activity in order to maintain on the property, the permittee shall retain a compliance with the conditions of this permit. copy of the plan at a readily available D.DM alternative site approved by the Department The permittee shall take UTY TO ITIGATE and provide it for inspection upon request. If all reasonable steps to minimize or prevent the plan is maintained at an off-site location any discharge in violation of this permit such as a corporate office, it shall be provided which has a reasonable likelihood of for inspection no later than three hours after adversely affecting human health or the being requested. environment. C.AE.DPI All written correspondence to The DDRESSESUTY TO ROVIDENFORMATION the Department should be sent to the permittee shall furnish to the Department, following address: within three hours, any information which the Department may request to determine Storm Water Coordinator compliance with this permit. The permittee Iowa Department of Natural Resources shall also furnish to the Department upon 502 E. 9th St. request copies of records required to be kept Des Moines, IA 50319-0034 by this permit. F. OI When the permittee THER NFORMATION PARTVI.STANDARDPERMITCONDITIONS becomes aware that he or she failed to submit any relevant facts or submitted incorrect A.DC information in the Notice of Intent or in any UTY TO OMPLY other report to the Department, he or she shall 1. The permittee must comply with all promptly submit such facts or information. conditions of this permit. Any permit G.SR noncompliance constitutes a violation of the All Notices of IGNATORYEQUIREMENTS Code of Iowa and the Clean Water Act and is Intent, storm water pollution prevention plans, grounds for enforcement action; for reports, certifications or information either termination of coverage under this general submitted to the Department or the operator of permit; or, for denial of a request for coverage a municipal separate storm sewer system, or under a reissued general permit. that this permit requires be maintained by the permittee, shall be signed in accordance with TP 2. The permittee shall rule 567--64.3(8) of the Iowa Administrative OXIC OLLUTANTS comply with effluent standards or prohibitions Code as follows: established under section 307(a) of the Clean Water Act (CWA) for toxic pollutants within the time provided in the regulations that 64.3(8) Identity of signatories of operation establish these standards or prohibitions, even permit applications. The person who signs 11 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER the application for an operation permit shall significant penalties for submitting false be: information, including the possibility of fine and imprisonment for knowing violations." a.I.OHSL Corporations. In the case of corporations, IL AND AZARDOUS UBSTANCEIABILITY a principal executive officer of at least the Nothing in this permit shall be construed to level of vice-president. preclude the institution of any legal action or relieve the permittee from any responsibilities, b. Partnerships. In the case off a partnership, liabilities, or penalties to which the permittee a general partner. is or may be subject under section 311 of the Clean Water Act. c. Sole proprietorships. In the case of a sole J.PR proprietorship, the proprietor. The issuance of this ROPERTYIGHTS permit does not convey any property rights of d. Public facilities. In the case of a any sort, nor any exclusive privileges, nor municipal, state, or other public facility, by does it authorize any injury to private property either the principal executive officer, or the nor any invasion of personal rights, nor any ranking elected official. infringement of Federal, State or local laws or regulations. e. Storm water discharge associated with K.S industrial activity from construction activity. The provisions of this permit EVERABILITY In the case of a storm water discharge are severable, and if any provision of this associated with industrial activity from permit, or the application of any provision of construction as identified in 40 CFR this permit to any circumstance, is held 122.26(b)(14)(x), either the owner of the site invalid, the application of such provision to or the general contractor. other circumstances, and the remainder of this permit shall not be affected thereby. The person who signs NPDES reports shall be L.T the same, except that in the case of a This permit is not transferable to RANSFERS corporation or a public body, monitoring any person except after notice to the Department. The Department may require the reports required under the terms of the permit discharger to apply for and obtain an may be submitted by the person who is individual NPDES permit as stated in Part I.C. responsible for the overall operation of the facility from which the discharge originated. M.POM ROPERPERATION AND AINTENANCE The permittee shall at all times properly operate and maintain all facilities and systems H.C Any person signing ERTIFICATION of treatment and control (and related documents under paragraph VI.G. shall make appurtenances) which are installed or used by the following certification: the permittee to achieve compliance with the conditions of this permit and with the "I certify under penalty of law that this requirements of storm water pollution document and all attachments were prepared prevention plans. Proper operation and under my direction or supervision in maintenance also includes adequate laboratory accordance with a system designed to assure controls and appropriate quality assurance that qualified personnel properly gathered and procedures. Proper operation and evaluated the information submitted. Based maintenance requires the operation of backup on my inquiry of the person or persons who or auxiliary facilities or similar systems, manage the system, or those persons directly installed by a permittee only when necessary responsible for gathering the information, the to achieve compliance with the conditions or information submitted is, to the best of my this permit. knowledge and belief, true, accurate, and complete. I am aware that there are 12 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER N.IE The permittee shall practices, maintenance procedures, and other NSPECTION AND NTRY allow the Department or an authorized management practices to prevent or reduce the representative of EPA, the State, or, in the pollution of waters of the United States. BMPs also case of a facility which discharges through a include treatment requirements, operating municipal separate storm sewer, an authorized procedures, and practices to control plant site runoff, representative of the municipal operator or the spillage or leaks, sludge or waste disposal, or separate storm sewer receiving the discharge, drainage from raw material storage. upon the presentation of credentials and other ” documents as may be required by law, to: “Construction sitemeans a site or common plan of development or sale on which construction activity, including clearing, grading and excavating, l. Enter upon the permittee's premises where a results in soil disturbance. A construction site is regulated facility or activity is located or considered one site if all areas of the site are conducted or where records must be kept contiguous with one another and one entity owns all under the conditions of this permit; areas of the site. 2. Have access to and copy at reasonable "" or "" CWAClean Water Act means the times, any records that must be kept under the Federal Water Pollution Control Act. conditions of this permit; and, "" Dedicated portable asphalt plant means a 3. Inspect at reasonable times any facilities or portable asphalt plant that is located on or contiguous equipment (including monitoring and control to a construction site and that provides asphalt only equipment). to the construction site that the plant is located on or adjacent to. O.PA Coverage under this ERMITCTIONS permit may be terminated for cause. The "" Dedicated portable concrete plant means a filing of a request by the permittee for a portable concrete plant that is located on or permit discontinuance, or a notification of contiguous to a construction site and that provides planned changes or anticipated concrete only to the construction site that the plant is noncompliance does not stay any permit located on or adjacent to. condition. "" Dedicated sand or gravel operation means P.EL No condition of this NVIRONMENTALAWS an operation that produces sand and/or gravel for a permit shall release the permittee from any single construction project. responsibility or requirements under other environmental statutes or regulations. "" Department means the Iowa Department of Natural Resources. PARTVII.REOPENERCLAUSE "" Final Stabilization means that all soil disturbing activities at the site have been completed, If there is evidence indicating potential or realized and that a uniform perennial vegetative cover with a impacts or water quality due to any storm water density of 70% for the area has been established or discharge associated with industrial activity for equivalent stabilization measures have been construction activities covered by this permit, the employed or which has been returned to agricultural owner or operator of such discharge may be required production. to obtain individual permit in accordance with Part I.C of this permit. "" Hazardous condition means any situation involving the actual, imminent, or probable spillage, leakage, or release of a hazardous substance on to the PARTVIII.DEFINITIONS land, into a water of the state, or into the atmosphere, which creates an immediate or potential danger to the "" Best Management Practices ("BMPs") means schedules of activities, prohibitions of 13 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER public health or safety or to the environment. Iowa Antidegradation Implementation Procedure 455B.381(2) 1991, Code of Iowamanual. "" "" Hazardous substance means any Permittee means the owner of the facility substance or mixture of substances that presents a or site. danger to the public health or safety and includes, but "" is not limited to, a substance that is toxic, corrosive, Qualified personnel means those individuals capable enough and knowledgeable or flammable, or that is an irritant or that, in enough to perform the required functions adequately confinement, generates pressure through well to ensure compliance with the relevant permit decomposition, heat, or other means. The following conditions and requirements of the Iowa are examples of substances which, in sufficient Administrative Code. quantity may be hazardous: acids; alkalis; explosives; fertilizers; heavy metals such as "" Runoff coefficient means the fraction of chromium, arsenic, mercury, lead and cadmium; total rainfall that will appear at the conveyance as industrial chemicals; paint thinners; paints; runoff. pesticides; petroleum products; poisons, radioactive materials; sludges; and organic solvents. "" Storm Water means storm water runoff, "Hazardous substances" may include any hazardous snow melt runoff, and surface runoff and drainage. waste identified or listed by the administrator of the United State Environmental Protection Agency under " Storm water discharge associated with the Solid Waste Disposal Act as amended by the " industrial activity means the discharge from any Resource Conservation and Recovery Act of 1976, or conveyance which is used for collecting and any toxic pollutant listed under section 307 of the conveying storm water and which is directly related federal Water Pollution Control Act as amended to to manufacturing, processing or raw materials storage January 1, 1977, or any hazardous substance areas at an industrial plant. The term does not designated under section 311 of the federal Water include discharges from facilities or activities Pollution Control Act as amended to January 1, 1977, excluded from the NPDES program under 40 CFR or any hazardous material designated by the secretary part 122. For the categories of industries identified of transportation under the Hazardous Materials in paragraphs (i) through (x) of this definition, the Transportation Act (49 CFR 172.101). 455B.381(1) , term includes, but is not limited to, storm water 1991 Code of Iowa discharges from industrial plant yards; immediate access roads and rail lines used or traveled by carriers "" Municipality means a city, town, borough, of raw materials, manufactured products, waste county, parish, district, association, or other public material, or by-products used or created by the body created by or under State law. facility; material handling sites; refuse sites; sites used for the application or disposal of process waste "" NOI means Notice of Intent to be covered waters (as defined at 40 CFR part 401); sites used for by this permit (see Part II of this permit.) the storage and maintenance of material handling equipment; sites used for residual treatment, storage, "" Outstanding Iowa Waters means those or disposal; shipping and receiving areas; waters which constitute an outstanding state resource manufacturing buildings; storage areas (including such as waters of exceptional recreational or tank farms) for raw materials, and intermediate and ecological significance. These waters are identified finished products; and areas where industrial activity in Appendix B of the Iowa Antidegradation has taken place in the past and significant materials Implementation Procedure manual. remain and are exposed to storm water. "" Outstanding National Resource Waters For the categories of industries identified in means those waters which constitute an outstanding paragraph (xi) of this definition, the term includes national resource such as waters of national and state only storm water discharges from all the areas parks and wildlife refuges and also waters of (except access roads and rail lines) that are listed in exceptional recreational or ecological significance. the previous sentence where material handling These waters are identified in Appendix B of the 14 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER equipment or activities, raw materials, intermediate operations are mining sites that are not being actively products, final products, waste materials, by- mined, but which have an identifiable products, or industrial machinery are exposed to owner/operator; inactive mining sites do not include storm water. For the purposes of this paragraph, sites where mining claims are being maintained prior material handling activities include the storage, to disturbances associated with the extraction, loading and unloading, transportation, or conveyance beneficiation, or processing of mined materials, nor of any raw material, intermediate product, finished sites where minimal activities are undertaken for the product, by-product, or waste product. The term sole purpose of maintaining a mining claim); excludes areas located on plant lands separate from the plant's industrial activities, such as office (iv) Hazardous waste treatment, storage, or buildings and accompanying parking lots as long as disposal facilities, including those that are operating the drainage from the excluded areas is not mixed under interim status or a permit under Subtitle C of with storm water drained from the above described RCRA; areas. Industrial facilities (including industrial facilities that are Federally, State, or municipally (v) Landfills, land application sites, and open owned or operated that meet the description of the dumps that receive or have received any industrial facilities listed in these paragraphs (i)-(xi) of the wastes (waste that is received from any of the definition) include those facilities designated under facilities described under this subsection) including 40 CFR 122.26(a)(1)(v). The following categories of those that are subject to regulation under Subtitle D facilities are considered to be engaging in "industrial of RCRA; activity" for purposes of this definition; (vi) facilities involved in the recycling of (i) Facilities subject to storm water effluent materials, including metal scrap yards, battery limitations guidelines, new source performance reclaimers, salvage yards, and automobile junkyards, standards, or toxic pollutant effluent standards under including but limited to those classified as Standard 40 CFR Subchapter N (except facilities with toxic Industrial Classification 5015 and 5093; pollutant effluent standards which are exempted under category (xi) of this definition); (vii) Steam electric power generating facilities, including coal handling sites; (ii) Facilities classified as Standard Industrial Classifications 24 (except 2434), 26 (except 265 and (viii) Transportation facilities classified as 267), 28 (except 283 and 285), 29, 311, 32 (except Standard Industrial Classifications 40, 41, 42 (except 323), 33, 3441, 373; 4221-4225), 43, 44, 45 and 5171 which have vehicle maintenance shops, equipment cleaning operations, (iii). Facilities classified as Standard or airport deicing operations. Only those portions of Industrial Classifications 10 through 14 (mineral the facility that are either involved in vehicle industry) including active or inactive mining maintenance (including vehicle rehabilitation, operations (except for areas of coal mining mechanical repairs, painting, fueling, and operations no longer meeting the definition of a lubrication), equipment cleaning operations, airport reclamation area under 40 CFR 434.11(1) because deicing operations, or which are otherwise identified the performance bond issued to the facility by the under paragraphs (i)-(vii) or (ix)-(xi) of this appropriate SMCRA authority has been released, or definition are associated with industrial activity; except for areas of non-coal mining operations which have been released from applicable State or Federal (ix) Treatment works treating domestic reclamation requirements after December 17, 1990) sewage or any other sewage sludge or wastewater and oil and gas exploration, production, processing, treatment device or system, used in the storage or treatment operations, or transmission facilities that treatment, recycling, and reclamation of municipal or discharge storm water contaminated by contact with domestic sewage, including land dedicated to the or that has come into contact with, any overburden, disposal of sewage sludge that are located within the raw material, intermediate products, finished confines of the facility, with a design flow of 1.0 products, byproducts or waste products located on mgd or more, or required to have an approved the site of such operations; (inactive mining pretreatment program under 40 CFR 403. Not 15 IDNRNPDESGPN.2 OWAEPARTMENT OF ATURALESOURCESENERALERMITO SWDAIACA TORMATERISCHARGESSOCIATED WITH NDUSTRIALCTIVITY FOR ONSTRUCTIONCTIVITIES ED-O1,2012O1,2017 FFECTIVEATECTOBER TO CTOBER included are farm lands, domestic gardens or lands used for sludge management where sludge is beneficially reused and which are not physically located in the confines of the facility, or areas that are in compliance with 40 CFR 503; (x) Construction activity including clearing, grading and excavation activities except: operations that result in the disturbance of less than one acre of total land area which are not part of a larger common plan of development or sale; (xi) Facilities under Standard Industrial Classifications 20, 21, 22, 23, 2434, 25, 265, 267, 27, 283, 285, 30, 31 (except 311), 323, 34 (except 3441), 35, 36, 37 (except 373), 38, 39, 4221-4225, (and which are not otherwise included within categories (ii)-(x)); " Storm water discharge associated with " industrial activity for construction activities means activities that fall under subparagraph (x) in the definition of storm water discharge associated with industrial activity. "" Topsoil means the fertile, uppermost part of the soil containing significant organic matter largely devoid of debris and rocks and often disturbed in cultivation. “" Uncontaminated groundwater means water that is potable for humans, meets the narrative water quality standards in subrule 567-61.3(2) of the Iowa Administrative Code, contains no more than half the listed concentration of any pollutants in subrule 567-61.3(3) of the IAC, has a pH of 6.5-9.0 and is located in soil or rock strata. 16 Storm Water Pollution Prevention Plan for Construction Activities APPENDIX B FIGURES & DRAWINGS Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 Storm Water Pollution Prevention Plan for Construction Activities APPENDIX C MATERIAL SAFETY DATA SHEETS Weaver Boos Consultants 4085 Meghan Beeler Court South Bend, Indiana 46628 Storm Water Pollution Prevention Plan for Construction Activities Emergency Phone Numbers (TO BE COMPLETED BY GENERAL CONTRACTOR) Fire, Police, Ambulance 911 Owner: General Contractor Office: Site Mobile # Subcontractors Sub #1) Office: Sub #2 Sub #3 Sub #4 City or County Contact State Ecology Dept. Storm Water Pollution Prevention Plan for Construction Activities Spill Report Form LOCATION: Date:___________________ Time: Regulatory agencies notified (date, time, person, agency, and how): Material spilled: Quantity spilled: Source: Cause: Extent of injuries (if any): Adverse environmental impact (if any): Immediate remedial actions taken at time of spill: Measures taken or planned to prevent recurrence: Additional comments: This report prepared by: (Signature) Storm Water Pollution Prevention Plan for Construction Activities Storm Water Monitoring Form PROJECTCONTRACTOR : : RECEIVING WATER:MONITOR PERFORMED BY: Monitoring date:____________________________Time:________________________ Current weather conditions:________________________________________________ Previous 24-hour weather conditions:_________________________________________ SAMPLING POINT TURBIDITY (NTU) Up-Stream Adjacent Downstream Comments:___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ Sampler’s Signature:________________________ ____________________________ signature print name Storm Water Pollution Prevention Plan for Construction Activities Erosion and Sediment Control Inspection Form Erosion Prevention Inspector(s):________________________________Date:________________ Site Name and Location:___________________________________________ Current Weather Conditions:_____________ Last 24 Hours:______________ BMP Designation O.K Not O.K. BMP Condition, Corrective Action, General Notes Construction Access Trackout? Street Clean? Soil Stabilization Signs of Erosion: Gullies? Slope Failures? Rills? Slope Protection Plastic Condition? Grass Growing? Hydroseed Condition? Matting? Perimeter Control Clearing Limits Marked? Silt Fences? Swales? Conveyances Stable Ditches? Check Dams Intact? Sand Bags? Slope Drains? TESC Management Revisions Required? Water Management Infiltration System? Clean and Dirty Water Separated? Offsite WaterBypassing? Outlet Protection Stabilized? Storm Water Pollution Prevention Plan for Construction Activities Erosion and Sediment Control Inspection Form Sediment Control BMP Designation O.K Not O.K. BMP Condition, Corrective Action, General Notes Storm water Detention And Monitoring BMP Maintenance Inlet Protection Dust Control Spill Prevention Condition of Discharge Water Comments:__________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ __________________________________________________________________________ Storm Water Pollution Prevention Plan for Construction Activities APPENDIX D NPDES - CONTRACTOR CERTIFICATION FORM Storm Water Pollution Prevention Plan for Construction Activities NPDES General Permit No. 2 Contractor Certification Statement ALDI INC. 760 Ruppert Road Iowa City, IA 52246 All Contractor(s) or Subcontractor(s) that will implement any soil erosion or sedimentation control measures must sign a copy of the certification statement below: I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System (NPDES) permit (General Permit No. 2) that authorizes the storm water discharges associated with industrial activity from the construction site identified as part of this certification. Name: Position: Activity: Firm: Address: Telephone: Signature: Date: