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Home My WebLink AboutBLD2020-000225-05 &8 Approved site plan and stormwaterQ A \.T Subject Parcel consists of two segments divided by McMinn Rd Exlstingcravty- > > Dissharye Drainfield Exisiingi,:PGal ` Sepik Tank SEP 1Moa— U 0.BoX Existing Driveway'-,_ approximate route 1 Ex Shad ■ i � r Ex. Well 1` Survey Pin r Existing Vegetated Surfaces Maintained for Run -Off Treatment 0 100 200 300 400 Ft Actual Size (11 "x17"): 1 inch = 100 Ft Anticipated Stormwater urface Sheet Flow Paths Sheet 1 of 2 Stormwater Site Plan Sonya Baumstein's Property 522 McMinn Road Port Townsend, WA 98368 �1s Jefferson County Parcel 001063018 222,600 SF (5.11 acres) Proposed 54' Tall Dry -Stack Previous Cases: BLD20-00225 Rock Retaining Wall u��5u'r�d SEP19-00004 19.0 15, y Proposed 40' x 90' (3,600 SF) Pre -Fab Metal Building Roof to discharge onto concrete perimeter sidewalks h �Inctric,,. Survey Pin' Ex. Electric Supply REVISED dated Has been APPR by 3EFFE DEPT. OF Proposed Perimeter Sidewalks (2,450 SF) Existing Cleared Building Site Existing Gravel Parking Drawn By: Everett A. Sorensen, PE Evergreen Engineering 715 Grant Street Port Townsend, WA 98368-2405 ev—sorensen@hotmaii.com 360-821-9960 June 29, 2020 r u6 w1m.u., V1A 983ra ll MCMInn fed; Port Tvwn�nd, preserved ementPtah, le natiVa for�tto � will revelVe dispersed storrr+Vrater tun -oft for natural flaw gaurrrstesn Starmwater Maintlat c ro eot with amp sed itt pi laws surfae ■ proposed large residentlat constnactlon p l nt to ail pmPn stated bUltefs ad�aca r to dlsPe1'ee Stormv�dter ream Manual for Vf bstern ■ x40 R w de native Serest vegetated dewafk in orde s Stormwater Manage off onto per si �ntof Ecology' Decamber2014, page attenuation and treatment $ e roc rurl tp Washington Dspart Runoff Treatment aMPs— proposed Oluvture to disc» complianceSri plow Dispersion volume V f ' control strategy In Substantial.12: Sheet t; Bows Stormws1er flaw van t Praetice SNIP T5• raded to avoid mncenKa yllashiTrglon's Bast Managed brat is g lawns, ��us or Pervious surface anent vegetation for affective attenuation gutters, building eaves) and the For any infi band of adi alias, surface [d ws traverse a narrow s such as drsveways• 'p a or the irnPervlous J ❑ispersed By c 150A slopel surfave een the edge crushed rook},itebuffer With tel sloping ( c lanneong tie nsian of subgrade material ( V For fiat or moderately insist of an exte rvious surface. ,�lld requf re at least a 20 R wide Provide a 2 fO6t wide transltlon zone n dlsaaurage Prow7de an additional 1❑feet of ve9 eta tin. This transition zone Y t of idlh of ImPa 40 ft wide imPervious surface downsioPe ve9 d buffer far up to w0 fee thereof [fie. — f �mpety aus surface width or fraction f vide a 1fl-foot-vvide vet3etate Sheet 2 of 2 e nts 1-9 Minimum Storm,ater Regwrem Cvnst imelat�So Controls Wppp and Temporary Erosion & sect Santa 13aumstein's Property 522 McMinn Road, poltTownsend, WA Jefferson County Parcel 001 dies] 222,�6 SF ( Previous Cases: g{ D20-00225 SEPi9-00004 Pro ctr add�nal feet a for ea esters Washington vegetated buffed' Management Manual far W s S�rmwater ent5 f _ 9 from the tapadrpent of Ecologytale herein) water Requirem Site Plans [contained site. ation of StormVtaleroslon &sediment Controls is requ red at wntMdion. Coratruction FAtnimum St I,jr aR MR #1. Prepar NO additional rleadng for all stages of uirement [ ] salt and Vegatatfon — prevention and Tempura Minimum Rol riot to clearing top s 11s NAii Provide vehlvle access fisting MR #2: Construction Stormwater Pal{ ark Q'ear109 Urni[s P wlih a base of quarry Pa �egetatordM existing driveway erred along the length of ex Ejament 1: preservestrydion AM -SS 'iris ater run sa all remain disp dw »hill of the area. of exams m d upon lraavrng s+te Ran s at the site wtittfi, the sugj P silt fence Ei vehi t e Establish etated surfaces be" silt bar er d- etatlon as quickly as snail free mere are no rousting ooncenlrated surface install a surface ! Flow Ratase disperse discharges will Bow through Ye8 �rrrx lion, r with grass and ground covering Veg Element 3: Centro site• are disturbed it fifes during wet seas driveway and building Con''rel5 _ if additional surfaces and establ0hin9 y living So p exposed soils by hand Vaatenng r discharges awe] Eremart 4: meta» Swif t c�lgbilize temporarily expo aeon. Dnt"t starry �vaie Etarrtent 5: Stabilize Soils — ri basins needing Protection stole Hand -water sail piles asposneeded during dry Not appiicabls for this Slte all rspnnel as to friis Policy - There ate no rearbY �rrnwater dram inlets or talc Element 5' Pratact 90s Icble [OF this site. or off and conSfrudion debris' InsVut� Pe In Inlets — Nat appf Element 7: Prated s and Cutlets — pollutants, Including motor fed as needed. nt 8: Stabilize Cdranrlei e or release ct all a tering expected ularry I and maintained Eferr>e Prevent dlscnarg FJsimerd 9. Control Poffutants — _ Not aPPl;rabie for this site', Walla, o lla, Control Features must be inspected reg nt features as needed. Erosion & Sed mentatinn Co starmwaler manage Element I(). -Control Pa_Nl�ter All TemP�y regularly and adjust cflnstructia'' instruct ail PgrSonnal as to the ° leaning Elemen[ if : Malntaln 6M Assess condillor+s reg round disturbances• tudjon debris imrrted atelY Manage The Project — AVo!d unnecessary g motor oil and Park; ns g areas shall be maintained by Elam f2' impact Development SMPs — invltJdm9 Low fmpa r release of all poiYutante, andfor rockery Element 13: Protect prevent discharge v d with vegetation pe Control of Pollution — round shall be larrdsra� brie regularly MR #3: all unsurfa� g collecting After von�ction is aartpieted, q0t appifcabie far this site. mum Val` extent - any releases of olf, other hydrocarbons °f ch�i�8 � pu1{alis — er on ste to the may ,� elated surfaces s through existing g n sheet flow of Natural Drainage Sys and iniittrale stormv+si treated as it flow staled surfavas which wil! damps MR #4', preservationwater Management disperse existing Vag MR #5- on -site Sin' Runoff from all impeRus surfaces w[fi be naturally off ih rough MR #g: Runoff Treatrrrent hall be achieved by routing Control— Control of stormw�blBer °q this site ravide stormwater flaw attenuation and natural treatment MR tu- Flaw Not aPA station in order to. p MR #8: Wind'' Protection — Main taln native Vegetation Mft 89 09,ratlons and MSlalenanoe Drawn BV EveretS . Eng r�enar nti Ever4 388-2 Rom 715 Grant Sircerssan�t Tha°v+nsan-d '� 82020 Jnew. 0VED STORMWATER PLAN OCT - 1 2020 - JEFFE 4�wuNty DC Michelle Farfan From: Sonya Baumstein <sonya@teamepoch.org> Sent: Tuesday, September 22, 2020 10:50 AM To: Michelle Farfan Cc: Jeff Monroe; Jodi Adams; Linda Paralez Subject: Re: BLDG20-0025 Stormwater Engineering CAUTION: This email originated from outside your organization. Exercise caution when opening attachments or clicking links, especially from unknown senders. BMP T5.12m. Sheet STORMWATER PLAN Purpose and Defrnifion 1 ocr Sheet flow dispersion is the simplest Pia t vious or pervious surface that is graded to avoid concentra persed as they leave the surface, they need only traverse effective on -site stormwater management. Applications and Limitations Use this BMP for flat or moderately sloping (< 15% slope) patios, roofs without gutters, lawns, pastures; or any situat avoided. Hi Michelle, Here it is again, but the page number and guide was also notated so you can look up on your end in the last email. Would it be possible to get responses faster than a week if my information isn't complete? I've been waiting pretty patiently for quite some time on the whole project. Stormwater was originally emailed to you on June 30. 1 realize everyone has a lot of work but would really appreciate my project prioritized. Thank you, 1 4SoN C, Worksheet L Large Projects Large Projects subject to Minimum Requirements #1 -9 must complete Worksheet Al as applicable. Also —�► complete Worksheet 131. Does the project discharge to a sub basin draining to salt water, Dosewallips River, or Hoh River? Yes Does the project meet feasibility criteria E for full dispersion (see Worksheet C1)? El I1 Use List #3 on Worksheet Al page 6. + No further action is needed. Is the project in the Urban Yes Growth Area? 1 no Yes No Further action needed. Demonstrate full dispersion on site plan. ,. pnuMwP`TER pLA Is the project on a parcel 5 acres or larger? Yes En o The proponent must submit a stormwater report and site plan prepared by a licensed engineer that complies with the 2012 Department of Ecology Stormwater Man- agement Manual for West- ern Washington as amended in 2014. The report prepared by the engineer must demonstrate compliance with the LID Performance Standard and all minimum requirements. For each surface consider the BMPs in the order listed in List #1 page 5 in Worksheet Al, except, raingardens may not be used. This process is equiva- lent to List#2 in the 2012 Department of Ecology Stormwater Management Manual for Western Washington as amended in 2014. Start Here Does the site have See Redevelopment 35% or more of Yes Millimuun existing impervious Requirements and coverage: Flow Chart No Does the project convert (Figure 2.4.2) 3% acres or more of Does the project vegetation to lawn or result in 5,000 PP landscaped areas, or square feet, or No convert 2.5 acres or more greater, of new plus of native vegetation to replaced hard pasture9 sunface area? Does the project es Yes \No result in 2,000 square ti feet, or greater, of All N inaaIld new plus replaced Requirements 41 hard suuface area9 to the ne replaced har and con Yes No vegetation Minimum Requirements Does the project have #1 through #5 apply to land disturbing the new and replaced activities of 7,000 hard sulfates and the Yes square feet or greater? land disturbed. No M11ll1I111I11 Requirement #2 applies. Figure 2.4.1 — Flow Chart for Determining Requirements for New Development Figure 2.4.1 — Flow Chart for Determining Requirements for New Development Taken from: 2012 Stormwater Management Manual for Western Washington (Amended Dec 2014), Washington State Department of Ecology. Vol. I — Min. Technical Requirements PDF a e 66 of 1,042) APPROVED STORMWATER PLAN Sonya Baumstein's Property 522 McMinn Road; Port Townsend, WA 98368 OC Jefferson County Parcel 001063018 JEFMrG6) 222,600 SF (5.11 acres) Plann Previous Cases: BLD20-00225, SEP19-00004