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Home My WebLink Aboutswhandout3 If you are involved with land disturbing activities of one acre or more, you are responsible for protecting water resources. A storm water pollution prevention plan ;s required by the NPDES permit and must be followed for the entire life of the project. PlanningJ applying and ma;ntaining a goo.d storm water pollution prevention plan will keep you in compliance and protect water resources~ The challenge - preventing soil erosion With new construction com es soil Joss due to ru noff w Soi I erosion is a serious problem and construction sjtes are a p ri m ary cau S8. Sed i me nt is the most com mo n poll utant in au r streams ~ rive rs and lakes. Po"ll utants are often carri ed with the soi I into streams, rive rs and lakes. Sediment pollution - cause for concern Wate r quality in area lakes, streams and rivers is th reaten ed. Th e cost of cleani ng sedi me nt and poll u ~ tion from streets~ sewerst ditches, streams, rivers and lakes adds up quickly. Preventing soil erosion in the fi rst place is the easiest way to deal with th e . problem. It' 5 the law - developers must Ii m it soi I erosion Any project that d istu rbs one acre or mo re is su bject to NPDES permit requirements. Developers are required to obtain a National Pollutant Discharge Elimination System (NPDES) permit from the Iowa DNR for each site& A storm water pollution prevention plan must identify all potential sou rees of po II utio n, i ncl ud i ng fu e I tan ks, chem i cal storage are as, concrete cu re ~ portable toi lets, solvents, pai nts and staging areas. It is also required by the permit to help identify practices that reduce erosion. and prevent sediment loss from co nstructio n sites. Use the 'checklists' in this packet Ins p ection s are req u i red by law - on a weekly' basis and after each rainfall of one-half inch or more. The checklist is a guideline for you to use to make sure you1ve covered the basics of an in specti on. Storm water pollution prevention plans are required by law. Developers are ultima tely responsible for compliance, and should ensure that contractors use proper soil conservation procedures dur~ ing all construction and development activities. Runoff, erosion and sedimentation become a concern when soil is disturbed for .construction An unfortunately-timed rainfall can be devastating. In fact, millions of dollars are spent each year restoring slopes: rebuilding drainage channels, and d redg i ng and cl san i n 9 pan ds and stream s. .Lack of compliance with local and federal environmental reg u lations can also result in costly de I ays an d fi n es. . Much of th is is preventable. Erosion control vs. sediment control Erosion controls are used to prevent soil erosion from occu rrin g at constructi 0 n sites with bare soi [5. Practices include mulch, compost blankets, temporary and permanent seeding, minimized [and clearing, and blankets (rolled erosion control products).. Sediment controls are used to control e rod ed or e rod i ng sedi ments. and keep the m on-site and away from surface waters. Practices include silt fences, sediment basins, compost berms~ and compost socks. Ti m i Og is critica I to prevent acce I erated erosi on · M i n i m lze th e ti m e soi Is are left exposed · Red u ce areas of exposed. so i I d u ri ng rainy seasons · Protect crjtical areas - streams, d rai nage chan nels · Stabi I ize exposed areas quickly Sediment is the largest pollutant from construction sites, but other pollutants also include fertilizer; oil and grease, construction debris, and con.struction chemicals. The sediment in the street will be washed into nearby streams and lakes through storm drains. . ::;-" -- ':\~H:;&;i;;;;:~;;(: ~:1t:~X:?:;i};~){fN:~:r;';:@fJ~~1E~%~t_;~~~Wi:;~~pgf;!(i:;);ittW~~i~~~;~\:;;\,~,i{;;i(;;;;:tt:!:':;X;~5;~E:^ _ ~,:, ;'-~~.>I~~g~tiWJ't~\;;~;~i'Vi~p~lj;i:'#~;;i~tj~@:.;j,~:'tj;:~: ~;;;Hi':;:Y~;-'i",{~!};:':~;r;~ - . - . .. . . - .- I. '(f;\'~<~\;;~f.:~")\,,"i~~ L~~;': .~.I~..... _:_-.:..~.:..:\~. ~ ::_~ .-.II.~.." i~~.':;...: .. :~.~ ~\~}~~.\~~~ '~:/~~:".:. .~-.r. . -~-...~ :: .,~~.'~~..'.:~ ..-_-<~:::~ ..: . ;':t:;;,~:,r.{;';;,:~~i~ " - . . ~ ~ -." _~ ..:~ . .~:. . I .':.~...;.~-". ". '. ..: ~;..~~:.':_~..:' ".": ~~:~~~..~.~~ ..;.'~:.: .~I.~". . - . .~ I :". .:_ :.~..-- ...~~__. ,".'., : :_. ~ - . . I. -.. . . ...... ." . ~..-.i:_.. 7.~.'~:~- -~.;.:.~ ;.~..:,~.:'.. :~~".>,::I.:~ ~~ .~~.. .",.:" i~.~:.}',(:'~.:'..~ i'>.: -..>?~_>;-:-.: ~i: ): "." .....-.:::-.~.....~..~.:.~. : . ~-~.., .--".: . -..~;I:"..~ . .;. .~I .: :)~~::~<.<.~- '<:..~:~.~~.~:". ~~ .:,~.:~:.,:-\;:.~.~". .. - ::;\<.~~.~~'>..~;>:.:\).-:' ,.: ".:' ~,. ... ...<...,'~.:. - .~-<.'~"".~:>~.:~-..;- I :'.: ~.,:. .." .".: ~:..:._:..' ~.-.,~ ;'::..=:O..~.~:~. .:::.:~:.:~:~\ ~::?>.:~;:~~~/ -,~?;:;::t~~-i)~.:. ~. ~ ~-.:: .. :.~..\>\-..~.:~~ ::.~.f~.~ ;:;:~';:,<.~::.:.. :. ~ ~:~.: ~ /..~ .~. -:~: : ~~ .;.. :~.:~ SWPPP'I site-inspection sheet . NOTE I regular, timely inspections are critical - .conduct inspectrons weekly and after every -rainfall event of 1/2 inch or more. If it is determined that defiCiencies existr they are to be add ressed as soon as practical. Changes to the SWPPP must be made. withi n seven to ten days. Records must be maintai ned for a mini m urn of three years. Site location Date o routine weekly inspection o rai "fall eve nt i nspecti 0 n Time (or, time elapse.d since end of rainfall, if applicable) I nspected by (in cl ude name, q ualificati 0 ns and title) Signature Date OK? note any problems identified and actions taken ....................-.-- __._________--....~':II..........~:-~_...J.ooI..~~__'_..............~.......~..................:...:......,.~___~...._.................__....-.......~............ --.........-.......,..f"Il""':-':~ ~--....-i.~,...,.,............--....-...:_....____..__....._-.,_~...............~...._-:"'L._..,__...:...._~..,...-....- . ... . . ,. .. --....- -. ..- :.' " . ... ~ "~ , , ~ , . .- , ~ i ~'~ ~ _~_~-=----.,......___ Are all discharge poi~ts free of any noticeable pollutants? . .... ... . . . - ~. . ~ ' ... - ~ ' . . -.... . ~. ~- :- - ,. .. . ~ ~.... .-. . , . .. ...'...... ....'~:'~ ..::: :,.~:,.\.~;~.,>:.,~{ ~ '>;~:~:>.~.\.._- r ?~:' .::~i .::.:.....,~.:.:' ~ 3i;?i'::r.:~i.i~;:.::. ~ .... .. ~ I.'. . ~ ..... . ~-'. ......-. . . '.... . .. '_:~ ... '.. :>.~.'.:, ~ .,' ~\. : ..::..~..: :.~~< <~'. ,;.',:..<.~~;j.~.~:.~~</.. .:.. '-.,.": _..~:.:.-;:~.: .~. :.: :.- :~;/>-~.. .~ -..:. .: ~~.:. ~~. -..:~.:'" :-'.:..' : ) :. .'i .;.'~... _: .-'--.',--.- , ..: .~\::~. ~:.~' -.-.. . -:.. ' .'~' :. . " . ~.- ~ ~ . . . . ~ . ~ .;-.. . . . . . .. ~ - . - -.. I . - ....- . . '., ,~ Are a II sed iments, mud t and debris bei ng kept from public road s? Ensu re th~t there are adequate provisio ns to prevent mud tr.acki ng off site. Ensu re that there is a sta b 1 e J rocked entrance to a nd from the site. Is anyon-site traffic p roperiy routed I with parki ng and storag e restricted to desig nated areas? Objective I note any other concerns Note weather conditions - e~g.: are dust control measures approp ri atety. im plemented? . ....: .',' ... ...., .:.:,_. ~~~----.._--------.....~~~.....-=-....~.-- .'.- . . Are materials, su pplies J chemica ls J po rtable toi lets, fuel tanks, pa jnts, solvents, a nd trash in app roved areas and protected from erosion or s pills? Are cl ean-aut, sto rage and mai ntenance areas for materi al handling equipment crean and free of spills and leaks? Note any best-management-practices that have failed, and the corrective action (s) ta ken ~ The key to stopping soil erosion is planning Plan the development to fit the site. Divide the site into natural drainage areas. Land has natural slopes and waterways. Ask engi ne.e rs and. architects to consider th em. Desig n ing to fit the natu ral patterns of the landscape reduces grading costs, distu rbs less soil and results in. a more visually interesti ng .and pleasing development. Determ i ne the Ii m its of cleari n9 and grad i n 9 Identify vegetative buffer areas hetween th e construction site and sensitive areas. Set borders around work areas~ and clearly mark areas to be protected d u ri ng construction~ Protect tree roots from compaction by construction equipment with the gradjng limits. Select erosion. and sedi ment .control meas ures Discuss the specifics of erosion and sediment control measures in a pre-construction meeting. Know.the practices, implement themt. and stick to a rigorous schedule of inspections..The result win be significant reduction in erosion and sedimentation. It's. the developer or-landowner's responsibility to develop and follow an adeq uate storm water poll ut.ion. prevention plan.. Discuss it at pre-bid meetings or clearly explain it in bid documents. Contractors should include costs in their bid; and then do the work, but, ultimately, it is the developerts responsib il ity to ens u re com pfiance with N PO ES req uirements. Stopping erosion requires - pJanning~ .accommodating the natural drainage patterns on the land~ and proper timing of excavation. Prepare a sequence of major activities I nstallation of controls J gradi ng activities, stabilization activities, and maintenance of controls must be planned and sequenced_ Hel pfuJ tips incl ude install ing perimeter (down slope) controls before land-disturbing activities occu r; not disturbing an area until necessary; covering or stabilizing disturbed areas as soon . as possible; timing construction activities to limit the impact of seasonal climate changes and weather events; not removing temporary perimeter controls untif after all upstream area.s are fu Ify stabil ized. Sediment retention basics The key to effective sed iment retention is to slow or impound ru nott. A sediment basin is one of the best methods for retai n ing sediment on site l and it must be used when. drainage locations se rYe an area of more than 10 di$turbed acres.. Sediment controls must provide storage for 3,600 cubic feet of storage per acre drained. Constru ction activity records While the ownership of a property may change hands between the developer, home builder at new. home owners, compliance is required until aU house construction is completed.. Every storm water permit req u i res that e rosjon and sed i me nt contro I s are in place du ri ng the home constructron phase. Developers can transfer storm water pollution prevention plan responsibility to the home builder or new [at owners. But to do th is ~ th e new owns r must sj g n a contract ag ree i ng to th e te rms of the existi ng storm wate r perm it. Sig n in 9 a contract req u i res that the new owner implement aU necessary erosion and sediment control meas u res. With 0 ut a co ntract tran sfe rJ th e developer remains responsi ble fa r co m p I ian ce on any lot th at has been sold. Keep construction activity records , Eros ion and sedi m ent. controls must be inspected wee kly and afte reach rai nfall of on e-half inch 0 r mo re ~ Every site is req ui red. to maintain an up-ta-date storm water pollution prevention plan . and a record of air construction activities (with a copy kept on site) i ncl udi ng: · practices i m plem ented · wh en majo r grad i n 9 activities occu r · when construction activities temporarily cease · wh en constru ction activities perm an ently cease · when stabi [izatio n m easu res are in iti ated lone I I two I photo one I Mulching is the placement of material (stra ~ wood chips, compost) over the surface of disturbed soil. Mulch is velJl impo'rtant for erosion con~rol and to help establish vegetation. photo two I Controls must be in pface and properly maintained In order to function. . . . . . . . . . . . . .1~wa..Department. of. Nat(jral.Resources '..storm water program. .W'NW.iowadnr~coiiilwaterlstormwater/indE;:Jx~htm I . Rut~ Rosdail.I.S15..281..6782 (phone) Joe Griffin .1. 51.5~.281 ~7017 (phone) . . . . . .. . . . . . lt~. Environlt1ental.P~otection Agei1~y.(EPA) I storm water program WWIt!~epa.gov/ebtpage.s/watestorm~ater.htn11 .UREI.AN.. .......... ..... .... .... . . Urban. R.esou rces. & Borden.and Alliance Network W'NW.urbanwaterquaUty.otg . .... Jennifer .W.elch;.. Urban ConselVationist .1S1-a.:North.Anke~y Blvd., Suite. 3. .J.\nk~_~y~ 1J\.."5()Cl.~1. . . .... ~~.~:~=:~:~::..r~)3.. (phoh~). ----:. remember - Improved water quality . is a respon.sibility we all share1 and a. benefit we.all enjoy~ .. .... .". .. .. . . . . . . .-. I()VI,~.::Stc:J.rmWat~r....Educ~ti()rr"Prog"nlQ1i:. . .. ... ...... ..... . . . . Tflis.: P.~.l1.Hca~iQn.::?"\fa$:.C?re,ated: :.(aJld... repiinte~). :.b~:"lJRBAf\J.~.. with . ...:~~~~:.:~~~~$:~~~~d:c~~~~t~~~~~~~r::~~. . ..mote cib()ut the :-progrartt.at: .WWWjowaS~Om1.wflte.r~org: . ... . ... . . ". .. . . . . . . . ... . .. . . . . . . . . . . . . . .. . . . .. . . . . . . . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . Th.(!..lowa. ~.sso.ciatioh.. of.Muni~ipal UtUities.:... . .wwwjamu~qrg.... . .. The Iowa. Storm Water. Education Program. provides educational . resources. and guidance to member com.munities about . storm water management URBAN