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Home My Public Portal AboutStormwater Management and Erosion Control Ordinance Presentation (PDF)Public Works Subcommittee Presentation September 28, 2015 ems lon 257: sltaJ�w Ir�l��rarliorl 25% deep "Mralion Natural Ground Caner N% evapolfanspkrotlon .--A ■:mM w4 iMoii 0 wow ■■�■ a2 181. ��I��Jdfe mrrunvm ss ■ ■ii �...� I(I'L shBiJOW Ir"I ratio n in �i�tralital� 751/6-100% Imq$raiQu!5 Cover Source: U.S. Environmental Protection Agency, Washington, G.C. Protecting Water Quality from Urban Runoff." Document No. EPA 841-F-03-003 Watertown !1 Deparhrtenfof Public Orks We're all about ... this town." TOWN OF WATERTOWN Stormy Drain Outfall Only storm water should flow from this pipe into the river. If you see • cloudy or discolored water, • oil on the water flowing from the pipe, or • water flowing from the pipe during dry weather Call the W.RTERTOWN DEPARTMENT of PUBLIC WORKS at 617.972.6420 Keeping the Charles River eie*l rs everyone's responsbill Only Raa Drain ®\ Watertown Deparhrtenfof Public Orks We're all about ... this town." Resistance z 100 D d 80 D U Q 0 60 m 40 C c cn � 20 �u CL 0 M USGS Maximum rate of decline Exhaustion 0 20 40 60 80 100 PERCENT URBAN DEVELOPMENT 44�4 Fish Kill in the Lower Charles River Basin 4" 6RVARD� Eliot fFK SQUARE �mbatl eSC g�2g Paul Bridge �* Natth R2Vere 5[ien[e paint Par WATERTOWN Weeks Museum por`+, SQUARE m Bridge z Anderson Nashua Galen St. Est° Hexer Bridge CENTRAL St. Park Gx o Pork �j SQUARE Tedd F `-i Bridge r _ / y vo Western Ave. Re4 sax Field ti1° wenem nve Bridge o Mar"sc Longfellow [ro'erman w�wrs �'an st SOco rE !l�-�If �rq Bridge T Park Dam o N. Beacon St. River St. y / `+° Arsenal St. 1 Q°[ES RrvEn R°A � Bridge Bride LLSTON Bridge �Q � 9 �E C A M B R I D Ci E °a\p., °� 2 Hatch Magozitte �,b�'.. Shell N°,yq NruM Ron❑ pad,Beach y Esplan a Field [rrt i e BRICHTON _ � aiMa A sT°0.0.o O T Stretch of river with higher density of Fish kill Harvard g �, s BU Bridge Bridge BOSTON czmr�ong2alm Ave. Each icon represents 4-6 carp or large -mouth bass 004 carcasses reported in the Lower Charles in August t caurronr MAD*;& FftMr N"Iih ghIll4+Iullnr►Itr oys.rewmd* lbk.grM^ fl In ri.—b A,r at.- P.— b—uo.Wd. IIA&PM P— r or—rvdci CWI MOCA N...in Ror rh. C&.N . W_ Lane 9ati.. 44a5nr" WA kkf Ur4 Phu 11;M0. Will, wt wow 6 wWh -W W 6FVW;%a W r,, -w* V" Pao + + ditd N%W*.M hAd -ntiir *Wk dk/bO~ *:g" W4 argVQM WWS Wt. e+pae ru.a+.ebnedw + D01-M iMkrMrWdker. FUPW,A- iter "-W. F_ ..r 1111lFM t SWAZL."" r vi" 7wJr.r... �b.11�wlh. ■ n..r.tlY�l..ifl hot, dry weather low oxygen 0244� lfV MA V shaf ow river excess Phosphorus ®T Wpall wn Deparb—tof i®Weut ... this town." 5.- 01 UVITI TOWN OF WATERTOWN PE PAUkkENT OF PUBIC WORKS i2A ORCHARO STREET WATERTON'H kIA p73T7 DPW Site P:ah Review Oneite Drainaae Regulremertls b Ea ad ppan Ilre standard nMll xl laq tat ldlhin U.S. Sal Cde9 iw S9Mo9 Teon"I RMOW M. $$ WApn MyOMkIgyApr $DW l4ere OVO ono $%W 40l U.S. Sad COMOOMion Safwea, Nef&W Fgop ,mV Hyhabpy Handbook c. II using Me Sipple Dyn zm DynornC FIeM methods. ma infiltration fates filell be IR a1r-9rTN2C lo."d Orr the Pahl'$ Role d�nlad rn VDkm1D sa the smrrmrerar. eferrayempn! IFlwriAi2elas Ffpridbppk. 0. E.ismrg ana prapa5eo MWeing woo. V wa ys arq naluravg—seo 9. TaMI area IWW sub areM es a%hoabM) proposed to dram to ea hdrywa4 a eppfared inlet. ere 0.,.d Tw uf'5y vwr wa vy P'aebpe tq 00n1oMd Orr•ft4401M mounavn agMi rllewceole T011mr eflea, onSAe drarapa mwd measures mull oe MvrideU lorMpq+D`+ad a 9 pe0lnaa, g9rppa. nbereq *•Nw-.k 1arW pow npnwnq aufaypla.9 mwxvyc.pwinc]ryrlro mwnw nnew Tnepylpow N I- poky rx b nnfp,re uw eaaeFM ir�a0fod srMmraler rvgRf+r1D0V wuak SevHslM pDwpxy ttrale f/KWFaue b OavekymeM Fa any prgac[Tel ragunese0W/SAe Fen Reuew,estM plenaM orepupe arWyeis tour[ be prepped bye Masfodnr6ape Rppetepa PiOrMsbnel ErgmMr Not whranxd wan you Srle Flan Nevus prorido IM bWnn9 1 Sae yedep and d,s�plenx nrAMnp lAe [aepxrq e ropDvr�xalaysleWswy pw Pr •pY.adl ena'a edea>ae ",.near wfpal eleval= M la area to be drained b %M inat r. wnrae+e�nrrn,.inaxl—n owl a. mnnaw>nrawry s�nk:�nr ramox� er we1 e�e.amm lenyna; cfnao e.aa�d Permewr ad n eume,p[vi•,m mint cw wpvr.ci9.a�,wr+mnr Pfpnynar�9ay.w+er�pn e Sul'-w u s ,e &Mno>4n. mT�WM ypil rq 0M dowel %ashnetaa %M*m nrgn arandeaM, prepared by a competent Some fkpres5 I. as defined nlra .'.fgmwolw' l rorxganreM kaTYhvR. wk-1. e viangera r:pOueWnf vee w s nap ana W1. rrye keppskroe It z Campuntwn: WCWwo't mp Or9npgp prgypervapprnwgynyisyilwn J9FynI�o..Ory wql., niiliven iWcnnsl e All p "y "a yhp'l of pq f011-9 7A•haur 24 Hour reiNea dale, aikpi from Ne web loot-ExVanre srwm Prer:lpi-ion Prarglopryr a Hex --na new lnyew- Cv°nl JnreklaaliWi�Irr lln W.adroml Rginnl Clneeee 2rywar Carer wRCCI g Campo Vrurysdy aM na eraurei i0•yep _ _{1ncT�a) -]2 It Reuwroea Cmsanatwn San'-MIKS1 as 2&r . evadable N Nippo i,`eu cunWl 6� WVW TDen f r 0.2 o of N'denown —wallet 1240rchard Street, as ygemprthef]ht' 3 Tlp MnouI Mn roots 5 c WorB3 -pawn and mpy fW opllaged M 9ldtars arrp Cpnneow olmcg to on en-5de nMtralpn 5yslem Sc raoycW fof Rngawn purposes a EraSgn WO SadWn4V nacnb lfe B - a wn renco M nay bales. Catch bp5in inMl 0,6teo ") sham am ba silaxTi om ow S M OPerdeons 0ma Atb mono— Plae shell 6e p—ded for all onxtorel Cnd rpn•Wry tvroi StM lff bap~t deviaog S. The 3Mr bran Mwmgewoa Ho book Vdmu g f mrneyq 3, prepared by J* klassedllrseus DEP and dated FBMuary 2008, es -*Mad. shell be used as VIa MLhnrtel refermca pogo for We d %V end pedemr." %l A.dg be Idl ep;.mv . Best Monp(pnrpnt Rfao� J"olasl prapoW wcon6lryclee m Ina Tom 7 The AppbcW may regaest perma:5fpn W Ca -a la me Ta %dronapp eyslam $wh pannaS Shah only tin gfanlae wW xthe wnt Imsna—- W sa[alecn of the OPW. that all pracb&Iemxahvbeen taken to Peane TtwDPWmarevueM%Mynlplftnmnel"ItooAo nto slmw1h11no—svo—draerpw ystmapotaCapaulain m accapi Um e[raibsnallNw 0 Upon wrnplelion of the wok, as-buyl dmwkVs shop be submitted m both paper end erectr format. The&—ngfs shall be based upon a {blot survey Or eduel wr bum lo-nars, OM shell be swm o d by FrefC59etrwl Land Survepof .,ytarrq n the CmandRwealM oI Mamehumn. The aa•auet Srawnp show depict all butlgags. pevW swha - tpplprapny. ow moor lwWsoppp toat s '.V7lwr- eewar- eea dre.50pe reel"k ae "ll ag 011— urgergedmd ypMias in5Ig11W cy ollrer5, slre0 to ID ,W on pre 41m Aa Stanrwelw manegaownt PanV95. !oath %ry Wral arq r -Wyo ral- desrdneo to marmpa llre 5lem oW, osS tad vnlh the Eo OWwd Me, 0811 also be and ed d. 9 Ir dq prge0l a 1prLl0d wdhn D wglerWuWmerreben arq.yr IlwoEplen- then o eing must also oa womdW to the Conwa goon Cammawn Ior gram approval Re� p!t&1a Watertown IF Deparhrtenfof Public Orks We're all about ... this town." Key Features 0 Erosion and sediment controls required ' Estimate site stormwater runoff for key storms Up to 100-year, 24-hour storm = 8.9 inches of rain ' Keep runoff on -site as much as possible using infiltration ' Provide water quality treatment Infiltration, vegetated filtration, particle separators ' Operation and maintenance plan 10 Provide "as -built" plan Clean Water Act (CWA) National Pollution Discharge Elimination System (NPDES) Stormwater Management Construction Multi -Sector Municipal Individual General Permit General Permit Separate Storm Permit IF (CGP) (MSGP) Sewer Systems (As needed or Watertown Departmenfof (MS4) requested by EPA) Pfi ftfinabilks We're all about this town." Charles River TIVIDL 10 Total Maximum Daily Load for Phosphorous Pollutant carrying capacity of the river 10 62.4 % reduction in phosphorous required for Watertown 20 year implementation schedule Development Process ' Review previous ordinance drafts ' Research other community ordinances ' Meet with other municipalities ' Meet with DEP Stormwater Coordinator ' Internal Coordination between DPW and DCDP ' Review current and proposed NPDES requirements ' Obtain support from Stormwater Advisory Committee What it does 10 Enabling legislation to administer permit program: is Defines who is required to obtain a permit is Exempts certain activities is Enables a simplified permit process is Provides DPW with authority is Allows Town Manager to promulgate Rules and Regulations Who it covers ' Defines who is required to obtain a permit: is 5,000 square foot land disturbance threshold is Increases impervious area by more than 500 square feet is Creates or modifies a direct connection to the MS4 OR 41 May result in an adverse impact on the MS4 or water resources of the Town Exemptions 0 Exempts certain activities, such as: 41 Repairs of stormwater treatment practices and emergency activities is Maintenance of landscaping is Overlaying of pavement is Reconstruction of existing residential driveways is Roadway reconstruction Administration 10 Provides DPW with authority to administer permit Simplified Permits 10 Simplified Permit Process: 41 Streamline permitting is Set predetermined design standards 41 Examples would include decks, patios, minor driveway expansions, pools How would the Ordinance impact homeowners? Day-to-day Administration of Permit is Deadlines and fees 41 Application procedures is Stormwater Management Plan requirements is Performance standards is Technical standards 41 Inspections, as -built requirements