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Home My WebLink About01e_NCS000250_PCSP_AuditPresentation_2019-9-23_BSLNORTH CAROLI NA Department of Transportation w y... N y. L ;7i7 NCDOT's Post Construction Stormwater Program (PCSP) September 23, 2019 Brian Lipscomb, PE Post -Construction Stormwater Guidance NORTH CAROLINA DEPARTMENT OF TRANSPORTATION GUIDELINES FOR DRAINAGE STUDIES AND HYDRAULIC DESIGN DAVID S. CHANG, PhD., P.H. STATF HYDRAUR.TCS TNGE4FER NGVEhiR 21, 2016 H Istormwater Management Plan NORTH CAROLINA DEPARTMENT OF TRANSPORTATION STORMWATER BEST MANAGEMENT PRACTICES TOOLBOX Uepo�mwnt ITranspvratwn lhr iw Z Apni 2014 z Highway Stormwater Program • Co -managed by the Hydraulics Unit and the Roadside Environmental Unit — Comply with the NPDES Permit (NCS000250) — 4t" Term (10/1/2015 - 9/30/2020) • NPDES Permit Sections, Part II Section A - IDDEP Section B - Post -Construction Controls — B.1 — SSIPP — B.2 - BMP Retrofits — B.3 — BMP Toolbox — B.4 - BMP I&M Program — B.5 — PCSP — B.6 — Vegetation Management Section C - Construction Section D - Industrial Facilities Section E - Education and Involvement — E.1 —Internal — E.2 — External Section F — Research and Program Assessment NCDOT Highway Stormwater i PROGRAM N Permit No. NCS000250 5. Post -Construction Stormwater Program a. Objectives In cooperation with DENR, implement a post -construction stormwater program to regulate stormwater from new NCDOT development and redevelopment for new built upon area (BUA) by requiring structural and non-structural best management practices to protect water quality, reduce pollutant loading, and minimize post - construction impacts to water quality. b. Management Measures The NCDOT shall implement the following management measures to meet the objectives of the Post -Construction Runoff Stormwater Program. Management Measures :: ` Measurable Goals.::. :. (a) Implement a Post- Implement a Post -Construction Stormwater Program (PCSP) to Construction control runoff from new NCDOT development and redevelopment. Stormwater Program. The PCSP shall define implementation of the approved NCDOT BMP Toolbox and post -construction stormwater control measures. (b) Submit revisions to NCDOT updates and/or revisions shall be submitted to DEMLR for the Post -Construction approval prior to implementation. Stormwater Program to DEMLR for approval. Where to Find the PCSP Manual Connect NCDOT connect.ncdot.gov https://connect.ncdot.gov/resources/hydro/Pages/HSPProgramPages.aspx?PGM=PCSP Or Google NCDOT Post Construction Stormwater Program 5 �,-r• ,-rrr�rrrrrTi , �r,-• If you remember only one thing from this presentation... Compliance with NCDOT's Post -Construction Stormwater Program (PCSP) Compliance with Stormwater Regulations 0 Simplified Project Workflow • Focus of the PCSP logo N� � araw waft Project Development "Ift W= . ago ass Construction Maintenance Post -Construction Stormwater Program (PCSP) • Updated PCSP and BMP Toolbox approved in September 29, 2014 L9 NC Department of Transportation Nyd raullcs un It 1590 Mail 5e— Center Raleigh, NC 27699-1590 91 9707 6700 Version 2.0 ern MCDEHR NMh Cardlra Cepa:tmn�l.; � . � rit and NaPlral Resomozs Pat N� oly Cmerlw Jolvl E 9.afa la Seodar Sepm,hr A, ±ON ECFIV@� pertl3. ChR lyV. PE Slp¢}ty<ywsc Gym 311dnel� lFw Ismwesas rs, . - a.4,36,wr iMv0., ago pYi9s++allr ro.\6 1rygtLLlMS lidl sc'erscr: nroEs vmm.,lmc®Pt®mswl�ll-+1PmPw aruPdel¢doaaTeoma� PCSPG�d�w Ooc�K Pwmn Ne. �'CSdW}50 Rcs k¢mpm•,dme ammuy ollh umplw:eeafwuen a�nd,nud by die 9i•. f M h lor:ms.R]. rn¢ �Pl�nn¢ ��nen�n ¢•em,ned vcoa, n Pmrxd nPa.n, m lbe.4nnnwn &w ffmu¢demepr Pr¢"Fi TmIM• iTadbaal n,d PrunL'wuln'Iiwr.Awwnmrr fw•de'w -Ilk wl.\'ni Rmdxq l'ny'•xu lP('SP Gu.fa� fhcemunr 1`--tivoPlrT•• we k,m bMLR ni:,.5.:4N in ¢.wnf+' s^^0<M^'i>Idr�caf Pmn^Na NRWQ: W.M Il tl:l and kll�n 4c1. nspacvice!.. aw�ugmmt rn•n•m�W rd P�n¢nl compiemice.eNvwe•tiuwsaf �a^rn�Nm urdir,m¢oee werz nwd ad de _npll do IJI ��,isP e...em.e ��I Inpk die] erc ¢ppvcL oe¢u e¢pne�n Ju¢e decwrcml ulI be mrvklnenlM+rnP 6 •mIK ernw�p vfNi¢ roPvPt IIF3dN s \i W I N doc,m•n¢ the die of i�lamnaliun in ro nm,ml R¢pnn Rr the pe.iad Pepmdn I. of¢ 11, _aif. Nn evlul .p I'nl lece In cm,l�i ne e, mihdnu6LFiY�tNv'�m fvty] r'wl3 iN 1e 1d�Rodail Srmiln Pmnvind Unrt � ee Slnw� Pemvleg IInR flla wwunma►r w.plt.a wu ror.cn �r�•�d�s�•wnoars�em ruts.Rmr�m�.cr¢p.telnw.ma,eu.slo-miumlPul aorlwr, I..nsem.ra.a d�Iw.laR �u.zrrw•ealrJl flsPpre�nrgnrAysglm Ji¢.a. Pam gra^a , dFmrre rd. P�roge - m as]enl I \rJ wR co..r Per P PCSP Applies To New Built -Upon Area BUA means impervious surfaces which do not allow water to infiltrate through the surface and into the subsoil. New BUA per the PCSP means "a net increase in built -upon area within a project boundary." Current PCSP Guidance • If new built upon area = PCSP applies • Determine Project Type (Roadway or Non -Roadway) • Follow appropriate flowchart 10 Figure 2.1 — Roadway Workflow roaawav Consider planning minlmum measures [refer to Sectlon 2.2]: Maximizing shoulder section Minimizing roadway side slopes Assessing and minimizing the impacts v1 sW—t,r runoff It. envirnnmrnta Ily smvtireareas Prumvti ng sensitive i ntencction ut strrams Consider design minimum measures {refer mSection 2.31' Prpwding adequate ground cover stadiN in% 519pe5 P rowdinic aduc uatc Cncrgy dissipation P rusertn fl natural 1Catur PA-.S.Nl Ve CenVCrAr1Ce EnmurAging diffuse flaw Minimizing direct discharge from hndges ees me byr rr:gryre IstM vroit�tIvcatinany v1 [he followi ng areas=teH4W Follnw workflov rewew R lato o watershed, TW watershed, ora a In Appenda4 agenry?' Coastal coumy? ,,,Arc 5tructural @M Ps 1, lr plcrem plane ing a nd determined to bF requ YBd design mi nl mum me A wren through —di nation wrth [refer to 5ectlms 2.2 and ',,reviewing agency? Implement Complete protect- oes prajec P6RrP.yulYP.men[s Structural SMPS specific 5M l'' involve drat page o satisfied. Project-speclFlc to the MEP design? SMP not required PCSP yes rcqui rrrncnts satisfied Fd low Guidelines Complete project - for Drainage specific SMP` Studies PCSP requirements satisfied tlndudes the following pmgra— 4w4f11 Water quality Certification, Isolated Wetlands/ Waters, Merger Process, Riparian Buffer Authorizations, LAMA Permits, Endangered species AWSertion 7 Consultation. 'A copy of the project -specific SMP shal I he sent to the Hydraulics Unit. Figure 2.1 — Planning Minimum Measures Consider planning minimum measures (refer to Section 2.2): • Maximizing shoulder section • Minimizing roadway side slopes • Assessing and minimizing the impacts of stormwater runoff to environmentally sensitive areas • Promoting sensitive intersection of streams Figure 2.1 — Design Minimum Measures Consider design minimum measures (refer to Section 2.3): • Providing adequate ground cover • Stabilizing slopes • Providing adequate energy dissipation • Preserving natural features • Maximizing vegetative conveyance • Encouraging diffuse flow • Minimizing direct discharge from bridges ncdot.gov LI ?tfi• '' ,rT r Infiltration f� Sheet Row promotes infiltration and allows Provides sheet flow through buffer vegetation to filter out pollutants Figure 2.1 — Beyond Minimum Measures "Do I need any structural BMP's?" oes the project require Is the project located in any of the following areas; HCkW Follow workflows review by regulatory o e agency? watershed, ORW watershed, or a in Appendix A Coastal County? Yes OR /Are structural BM Ps Implement planning and determined to be required design minimum measures through coordination with (refer to Section.2.2 and -,, reviewing agency? 13) Yes Implement �4Complete project- oes praje PCSP requirements struetural BM Ps specific SMP2 involve drainage No satisfied. Project -specific to the MEP de5ign7 SMP nut required f PCSP Yes requirements satisfied Follow Guidelines Complete project - for Drainage specific SMP2 Studies �— PCSP requirements satisfied PCSP Developments/Tools • USGS — Stochastic Empirical Loading and Dilution Model (SELDM) — North Carolina Version • Grant received — Run a series of `hypothetical' projects — Develop a catalog as a guide for project needs • BMP Decision Support Matrix 16 Integrated Project Delivery Improving project delivery through processes that are transparent, repeatable, accountable, effective and efficient. • Time and Resource Efficient • Improving Communication & Coordination 17 Figure 3.1 —Non-Roadway Workflow Stormwater BMP Toolbox NoRm CAROLINA DEPARTMENT OF TRANSPORTATION STORWNATFR BEST MANAGE MFNT PRACTICES TDOLBOx 51 1 � Nffi Caepkr 4-. f bepolreYrxl>f halnpgninm Stormwater Management Plan f 11FJ.l�Y.$)' Ir r Ibrrh G mN-Oe,.—of TramPoruem ��lT XgM1wa STORM TER G Program ER RMANA NAGEYENT PLAID SR: Ii]wraOAark Mlal Ian vAP.e vugS emenr Ipgoi El « fierwral 'M Mmmasm Y 5EIemenl: TIPN—WI: P -T Cete: W DOT C.b Conbm 10,,i R r AMmss: Address: Psare VM1me Emai: Final: Rare �� Yrer Rasi s GMP Ca NAetland'wiMn Pry sLmh? P Esc ■ Pruecl in mies mfek', Svmuraln Land Mse'. Si4 M 'eet Bui[L Ales ac. - Troinl Croft Section Dexrotimr� Anrw l Avg Dail T. lH(.M#dry): Cks rvF�vre. - a. Yeas General tm M Na , wi IDesSly 1s sn d Yidmismirm d Wmer orR Try ImPaMI Smlau Watrr S_ p6 Hsamatim NCOWR Stream tttlea Nn- � NC DWRSRdau rClassification WtYVaYr ReMa PAma Classifiusgrc Sip k Mal CJassific — OurrStrewn CcssYraemr H aim 2 A �p1i TSE a CC(mlrmY', TR Stream lO RSOner W4s to Eskd' Prdaee Hades 6rdGeSundnoWM9dv? hri Grans a-- RRRefa D'msip Pads PvwtlM in RrHeYI Oee k Grans Dischar O. Weser (e3eS povtleNmdwaro mono Gpsmsl ietl lynara!) flues, desn�enme Gere•ai ProieG ssanatrae irro./ARsanme GeneraiProjecs Namafve) roRAe nksAa+erne Ga�vN -ep Npraus! Stormwater Control Management System (SCMS) Stormwater Control Map .............................................................................................................. Select a Division: All v Select Control All Type: � Structural:0 Nonstructural: ❑ eo mass eo �, ® 2079 HERE. 0 200 Mn--ft Crrtp—. mn Terns Design 20 Other Tools / Resources • PCSP Quick Guide https://connect.ncdot.gov/resources/hydro/HSPDocuments/PCSP%20Quick%20Reference%20Guide%20-%20April%202018.pdf Post-C•oustruction Stormwater Program; Stnruxtratcr'LlauageineatPlan Quick Reference Guide PostLonstrucM1on starmwater Program lPrsPl HC06T's Hahimal Pollutart Oscharge Eliminrtion Eystem [HPO[I] er pemnit requires a Post{' rumcsm Stvmwrter Pmgrsm [PLSP]. The objective of the PCSP is w manate smrmwrter runoff irwn NC T projects by requiring rtrvc —1 and somatrudwral best rn—,ement'camas to Protect dx .ace , quality of HCs lakes, seams, nsers, antl estuaries The— be dexrid in Me PCSP appy to NCO projects which invWthax huatupw a. As reGui•ed e PCSPW. HOOT mplement strurcural a l for roan moral hex managemerrt pranices i [BMPs) u desc bed in both Me P6P and the HCUOT MP Toolbox whidi availabk at me Hydra uliee — Canner[ —bs[ce Pmvided below. �ocumereatw Mat— PLSP requirements were followed is P"'throwh the p-p—ib. of a Stormwrter Management Plan (IMP) if nequircd. Tire SMP— he mmplexd and upoaded m the Projects 'Hydraulics' dittipfine !older on the Prconsvutun webshc ew1'tdcrecu —n— wpdor to the pr jptt bring LET or awardeA. Stormwater Mameement Plan {set P1 TheSmrmwater Managemerrt Plan SMP) is a site spciFc document rased to identify atormvn r pollution minim on and tie •nerve efforn proposed for the project A MicrvmR Errel hash SMP mute is available for downbad on tlm Hydraulics unit Connxt wehate. The General Prcyect Informxon' [ah shouhd include all araaahk projec irdnrmacon including a pnojee. namm desaimrs rite projec scope and what rtmctuaal pHgB"i and nmatcuawcal —P me-- here been impkmemed preserve w mprme smnnw r ""- mana�menc x the projrM looton. H a Pruiett end odes s uctural smrmwab_v mmrW, theft shook he remrtletl in rM apprvpnate 77sal tab afon6 with the requerteddeapi—nnart— The SMP should be completed and uploaded to -hc Proje s Tlytlraulirs tliscipline fdder on rte Prcemnrtrurtier. weNi[e: ntmstlomnetrcdotcwlda•J— — �'oN9xPeec-Homeecor eu a project e m the Praanrtauction —ban, the Hyd—ics [fins M1 set up an email xrma aauunt for submusiorc M to answerSMP relied questorss. Pkax xrW 'MP quesims o the inns accoum email: HC➢OT_Hydreulia_SMP .nods -roe PreouentlP Asked Questions 4: nGP wet Forvier. must mmny IN tins mqu n—of A::.I oT pmjx!s amim irveeu me emamt or wr[,tpm tree [eu.:il'4Pb� or mry mum or Hue, murt mmpy wim tM Pcv. ry eru 'caries in a FaP desmae me-egaircnens mr>u projw-[s mnra mrseme eus. Q wwoe c dix-epon tow. A: aw errd Omer:mprdm xfnAms defined on pate v v the welly speeh:rH auA epmtrs m imP.m-ws wrreec vnin remrterrrmllnwn iM-tng into 1.,g nd. 4= wwev eneatd Phi ea a smm,wam, nren yemmrr�en �sttPjr A - or -P IN am m nine ave rtw duvet rarrrted m the PCP ll md'cex regrree. rn omjens ir. esquire tee pnepredm ,a o� ,yan P rcgira.'tors stow h>c wtmrtted hntte xgtlmulrs una nr cwnpeencc ermiv 4:—mP]im mas P—f A- IMP s re Irceed o the upmufo umt coned .emit[ 'winded a le oar. More trdorntation a more on eats ea Hit—, mvmwcmv Progem rW prawts reon tris rteet, pleme 'kit tic Hydm htupzllonn nedotga',hesour¢ynydm ord cxx ttc •rAgrwoy ��mw.�..,�am r„sPrsne camas actin e:arame, PF HYereu tin (sss)ancxho Post -Construction .Stormwiter Programi Storms a te:. Maiiagemeu t P lid u 6rrp:::-c000srtordo�em. re:oxrex'Mdro Quick Reference Guide The PCSP Workflow AN pope and fy� referrrces we from the'M1CODT PoSL- New project ConstnKtion Stormnu[ rProg lbsiiarsVrl[tiun initiated Storrrmhv[er ContrdrfwRoudhwy and Mtn� ivojects'Hgvidh cembefoundon the ht,druufresu TC Y —atin, (", ,b—r.. - Built -upon Area )BUA) is defined as impervious surface and partially impervious surface to the ex [that the partially mperviorc surface dues rot allow sae ter to ooes project Nu p infiltratethroughthe surfaceandinnothesubsoil. tfy create new project mairttains or deumsesthe currem BUA, the P built -upon f1Ot does nhot a to the d ratinn of an SMP PHy project preps area. apple is nP[regdred Yes , The PCSP categonaes all -- projects into one of two types: a roadway project a a P =madrruyrof Guidance for catepriig projects ihm one of these use Identify project type as roadway or types ton he found m pages 2-a aM 3-a of the P6P non -roadway docorrteru. ifyour project -IWFy is dnRrnk [o detendne, contact the Hydraulic unit for guidan- - Planning and design minimum measures ran be found in Section 2.3 for roach ay pmjem and Section 3.2 for non- [mpl—nt planning and de'igu nwdney projects. Minimum me used m your Inlmum measures per project type pmject are required to be doer mmd in the project narrative portion of the IMP. . Figlhres Ylust'mi g spe t —ddkws ton be found on Follow workflows in Figure 2 1 in the Page 2-2 for rwdwey pmjerts and pages — through 35 PCS roadway projects or for nuwmadxvy me _for Figure 3.1 for non -roadway projects - SMP completim guidance tan be found on the horht of Complete Sh1P;if required) and upload to the Project'' this sheet aM in the "Guidance" tab of the SMP Ex el 'Hydmulid discipline folderon the Pre struction template. The IMP template is down1wdade from the w'ebsite: Hyd—lie unit Canned websim I.traz//mnnrnnmxm.'Iselcee�rcm.Yon.SixP.eetino....rm httPs:llmrnectrcdot.gov/resusrcesfltydro wis Other Tools / Resources • PCSP Infographic Posters — d minimum measures completes https://connect. ncdot.gov/resources/hydro/Pages/HSPProgramPages.aspx?PGM=PCSP Improves Water Quality, Benefit L Vegobtivn mduv flow velocity and Promoteslrpi=�d,. '�2- wd1mentation, Albratlon, andaled uptake of pollutants- For mnvtryance low cost, pascive tw tmatment. ....,..,.. naa-w Runoff VORMM5 &Ina ffmpro'Y5 Wow amm:'?T'%In When a project creates new built -upon area (BUA), the Post -Construction Stormwater Program (PCSP) applies! . orreprolert�srdenut�dasr,�l,ngr�rr FAA dvrtify I#cp.�tyle m roadway or non-roadsraH - fuezr. rrmlerrsnrprann:g and dr- t mftimum meal based on prgen type implement M inimu m Measures to the maximum extent practicable (MEP) on all projects. Min imam Measures - Planning Phase • IAa. nvlml ShwrNer Secixm Minirr" Rcadway Sk1e Slopes .4seessny and ft¢imipy Ure Inµxrs of • RorrrnwtvF Runoff to F.rndranienta9y� -w Areas . Prnvning Sensimv cr—g of Sneem Min Imum Measures - Orafnage Design Phase • N—Ung Aderpa[eC d(— • 5Rals"Lrrkonkmmu and aralnage etches • Providing ndeyu�iw Emgy Lbelpauui • iltlli[iN 14atwal I oturm and UminW Ndmsys . lawurt q-4 uifhae lkrn • Mininirmg Di- r Dn frrp from Bridyev Implenwnt Toolbox BMPs as directed. • Betetnnne whedw[ sbuchcaf nMN are roqured tw aprgoct- • ApprowdstriKLrraI BlrNSare {+rowidnt m the NC WP gwrn mt r best 6Wnap—d Practices T-lbo.(WIR T~ Tip BMPTuollxapresentsguWnum crltera arld (aceiderativrrs for the design a J appkcahan of sinxturai UMA. • ahiPsareto}ri&rmn[edmifw MFP Document your project with the Stormwater Management Plan (SMP) . Ar.. w.cshxnmarcr ma�wjemnn a�;a�,s . nocundrts:nplenentationolstructualard ncn-nK "eAPc to the MFP Mmmum Mn res fury Leer udbs d ttroughuut the pro*a rnrini iu[Iw rruimraan[s , Praf[n"irk veVwred Swale, .'.r stiyn fwre bemused forsrarrxuter conueyrxc to reduce tbNvulocv and prurrnre sedrnentaum filn", aril mFdrrarin For more iof-3tion.pl— Wish thFYISP nebsi[e: M1ilpsJhenne2ncdot.goupesounesrhydrglPagesjpighway 5lumwater-Ntyn�aspr NCDOT Questions way tormwat PROGRAM 3rw' n'""aniC0".1