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HomeMy WebLinkAboutWPO202000037 VSMP - SWPPP 2020-10-16*(A COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, North Wing Charlottesville, Virginia 22902-4596 Tel. (434) 296-5832 • Fax (434) 972-4126 Stormwater Pollution Prevention Plan (SWPPP) Project Name: Galaxie Farm Subdivision W PO202000037 Address: Galaxie Farm Lane Charlottesville, VA 22902 TM 91 Parcels 9, 15 Prepared by: Shimp Engineering P.C. Prepared for: Blackbird of Charlottesville. LLC SWPPP Preparation Date: 07/02/2020 Revision Date: 10/16/2020 APPROVED by the Albemarle County Community Development Department Date 10/21/2020 File WP0202000037 (This document is to be made publicly available according to 9VAC25-880-70, Part II, section D) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County CONTENTS: (from Albemarle County Code Sec. 17405) 1. Registration statement 2. Notice of general permit coverage 3. Nature of activity 4. Erosion and Sediment Control Plan. 5. Stormwater Management Plan 6. Pollution Prevention Plan. 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. 8. Qualified personnel 9. Signed Certification 10. Delegation of authority. 11. General permit copy 12. Inspection logs Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 1. Registration statement Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY FOR OFFICE USE ONLY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM ID Number: CONSTRUCTION ACTIVITIES (VAR10) Technical Criteria: 11110 IIC ❑ REGISTRATION STATEMENT 2019 NEW ISSUANCE ® RE -ISSUANCE ❑ MODIFICATION WITH ACREAGE INCREASE ❑ Existing Permit Coverage Number (if applicable, Section I. Operator/Permittee Information. MODIFICATION WITHOUT ACREAGE INCREASE 71 A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section VI. (per Part III. K. of the VAR10 Permit). Construction Activity Operator Name: Contact person: Blackbird of Charlottesville LLC Nicole Scro Address: 912 East High St City, State, Zip Code: Charlottesville, VA 22902 Phone Number: 631-513-5480 Primary Email: nscro@gallifreyenterprises.com CC Email: keane@shimp-engineering.com B. Billing Information (leave blank if same as the Operator identified in Section I. A. above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices (if applicable). Name: Contact Person: Address: City, State Zip Code: Phone Number: Primary Email: CC Email: C. May we transmit correspondence electronically? You must choose YES and include a valid email in order to pay by credit card and to receive your permit coverage approval letter via email: YES ® NO ❑ Rev 04/2019 PAGE 1 1 7 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section II. Construction Activity Location Information. Project site information. A. Include a site map showing the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all water bodies receiving stormwater discharges from the site. B. Construction Activity Name: Galaxie Farm Subdivision Address: Galaxie Farm Rd City and/or County and Zip Code: Charlottesville, VA 22902 Latitude and Longitude (6-digit, decimal degrees format): 37.992316°,-78.493751° C. Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): 37.992316°,-78.493751° Section III. Offsite Support Activity Location Information. List all offsite support activities to be included under this permit registration. Enter additional areas on a separate page. Offsite areas not included on this registration may need to obtain coverage under a separate VPDES permit. A. Offsite Activity Name: n/a Address: City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): B. Offsite Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Section IV. Site Information. A. Acreage totals for all land -disturbing activities to be included under this permit coverage. Report to the nearest one -hundredth of an acre. Total land area of development (including the entire area to be disturbed as approved in the Stormwater 13.70 ac Management Plan): Primary estimated area to be disturbed (portions with Erosion and Sediment Control Plan approval only): 12.00 ac Offsite estimated area to be disturbed (if applicable): C. Property Owner Status: D. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental): E. Municipal Separate Storm Sewer System (MS4) name (if discharging to a MS4): B. Estimated Project Dates (M M/DD/YYYY) Start date: 10/01/2020 Completion date: 10/01/2021 FEDERAL ❑ STATE ❑ PUBLIC ❑ PRIVATE residential Albemarle Rev 04/2019 PAGE 2 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 F. Is this construction activity part of a common plan of development or sale? YES 0 NO ❑ G. 6" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Attach a separate list if needed. HUC RECEIVING WATERBODY(S) 020802040402 Moores Creek Section V. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement, the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been submitted to the VESCP Authority for review? YES ® NO ❑ Erosion and Sediment Control Plan Approval Date (for estimated area to be disturbed).: C. Has land disturbance has commenced? YES ❑ NO x❑ D. If this project is using approved Annual Standards and Specifications (AS&S), attach the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section II. A.): SEE THE FOLLOWING PAGE FOR SIGNATURE AND CERTIFICATION REQUIREMENTS AND INFORMATION Rev 04/2019 PAGE 3 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section VI. Certification. A person representing the operator as identified in Section I. A. and meeting the requirements of 9VAC25-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC25-870-10 as follows: "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. in the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: N the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or otherstate permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (MS4s), operator means the operator of the regulated MS4 system. 9VAC2 5 -880-70. Part III. K. Signatory Requirements. Registration Statement. All Registration Statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: N a president secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sale proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (H) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." / Printed Name: Signature (signed In ink): Date: Section VII. Submittal Instructions. Submit this form to the Virginia Stormwater Management Program (VSMP) Authority. If the locality is the VSMP Authority, please send your Registration Statement submittal directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authorityplease send to: If the locality is the VSMP Authority, please send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructiongp@deg.virginia.gov Rev 04/2019 PAGE 4 17 Section 2. Notice of general permit coverage (This notice is to be posted near the main entrance according to 9VAC25-880-70, Part II, section C.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 3. Nature of activity THIS SITE IS A REDEVELOPMENT OF A FARM INTO A 65 UNIT SUBDIVISION. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 4. Erosion and Sediment Control Plan. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County VSMP PLAN FOR LEGEND EXISTING NEW V 10 1-10Y-1 310-__ -10- .___g12_____ -12- 311.5 x 57NX 311.5 TC x 57j 311,5 TW x 5YXw 311.5 BW x 57'x DESCRIPTION BOUNDARIES BENCHMARK SITE PROPERTY LINE AQ CENTPROPERTYUNE VMATEOPROPERTYUNE BUILDING SETBACK PARKING SETBACK ACCESS EASEMENT SIZE TEXT NOTES PARKINGCOUW DIMENSION GROUND GRADING EASEMENT INDE MWOVR INTERVAL CONTOUR SPOT ELEVATION TOP OF CURB ELEVATION TOP OF WALL ELEVATON BOTTOM OF WALL ELEVATON RETNNINGWALL STAIRS BUILDING BUILDING ROADEDGE OF PAVEMENT ROAD-CENTERUNE CG2 STANDARD S'CURB 0343 STANDARD S' CURB AND GUTTER CG12 STANDARDACCESSRAMP s1DEWAU( BIKE PARKING CROSSWALK Burin P ACCESSIBLE ASIE IWifill PARKING IMnE RIP -RAP ABPHPLT GRASS MATTN�MP MAINTENANCE EC-2 MATTN VVERAN) TREELINE FENCE STREAM unu UTILITY EASEMENT UTILITY POLE LIGHTPOLE OVFfiHEAO UTILITY SPNITARY9SEWER STORM SEVER ROOF ORAIN DRAN INLET DRAINAGE EASEMENT FARM FOREST/ OPEN SPACE EASEMENT SANITARY$E RW LATERAL SANITARYMANHOLE SANITARYEASEMENT WATER WATER LINE W SERVICE WATER METER WATER VALVE FIRE HYDRANT WATER EASEMENT GAS GAS LINE HOLE: L THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOW OWNER Ties Main 91 Para 15(091cQ l5 ): Jasper L Haynes 8 MaIIM P Xayres P O. Bm422 Clarlollemile. VA k21 Tax Mg 91 Rome 9 (091cBO0{0.009c01' .as. S. Mmer 8 Anna Mane VAErler AAA Summers! Dr. Ganolles lie, VA M03 CONTRACT PURCHASER/DEVELOPER B..B of Cllano ,lk LIC 9l2 Ear' High BE Chandlm'Ak, VA.ff. ZONING PRO per ZMADl3 12 Do- Fx,as appr fry Her Bo of& msomm Dem AM, ID19. TITS side mnbins areas mTIM Ik In fire S sbpes Iwalaydiitant Q ft sharp slopes and shown In Nis plan add infieffifide both managed vtl preserw:e when slopes. No pme sep slopes shall be disturbed with IbLs plan. MAGISTERIAL DISTRICT Scommuue SOURCE OF TITLE Tax near 91 Parr 15: OB .5 1. OB 6193E5PRO Tax reaps91 Panel 9: OB 2290.2D4207 Plat SOURCE OF BOUNDARY AND TOPOGRAPHY Bound An p mMic werey provided by: R get W Ray &A maalm, Inc. February 27, 2020 BENCHMARK Datum for lgcgaphy Is N 33 FLOODZONE FEMA buff imumrc hale map (m munq Metal 51 W3C0l25D), elfeRIle doh February 4, 2WS shows Ills poperN IsnMwllhlnme andno WMm MNeImperN des xMln tlo troyraflmd plan. RESERVOIR WATERSHED TITSnth I5w in Ne MooresGwk Wder9tM. Tina die la MxXhinaxalersMd WaltdilcwalawppN. WATER & SANITARY SERVICES Tlls pgetl lend loin Be ACSA junsddlmi area for both wagon add sever add wil ce served by ACBA lnllees. GENERAL CONSTRUCTION NOTES 1. Pnm to an,w^sbrrmm vrlhb ads missing ngM-M-vay,'r Wbg w^r m to am exlsbg mad, a permit dial be camined from BE Mrgaim Department of Traed(VDOT). Tllspanasdrawnmaynetwcurddyrefle ra mml of Ne permll.Mv any elaaepmues occur vie requllamenh offfe permit shall govern. 2 AI materials and m dnn methods shall woman to BE curiae sFetiflwdons and standards otwOT urEeas ..-.a it 3 Ermbn and siltation control measures shall be pmvkted In arsnN with the appmv ¢maim mdrd plan add shall Pa annual ad prior to arty ceanng, grading or other mnstrudlon. l At slopes and disturbed areas are He M ertiong seeded add muldlM. 5 The mwimum allowable slope -21(h- a Oi p. whom masonaNy cbtanaae layers dopaz of 3:1 aLeffa and MMwheived. fi. P wad, - gall T IlneddM b dwb - IMa inondf E Ireaorde d P-ap Y V p Ca^IY g 9se fir .-itrew signs rot 1 hand d 9 channel T. . All fi Md g b II M . layN YManual Uniform TaC 9Unions @ II ipGiles M e pipe G III 9AI ms-m far pipe inllaFon most complyOW Snasfofar Haw CmsWdm Irpusby (29 CFR Pad 192fi). STORMTECH BMP MAINTENACE NOTES Ruder to Bad C22 fair maldmanm pmme ures. 1. Import system War mspedlcn pens for the Isolator now mar Val Intel amend arm per year, In la summer aryl in Me winder. Clean M dead with vaoo-uak during Inspection. 2. lm¢ allpmb,inMmanholes aModletannually RemNaMdn nrfalues. 3. lr¢l Wmmi system debris accumulation onw even 2rears. Ifdebtsasal tismotes,deanmeemsnhm yeah a vac -buck using access users. ZMA 2018-00012 NOTES 1. For hml lmI gx,Me path or bulklg far sal be a minimum of 3 Mad down a Me s as rlwasured ban Me eve of Me garge door. 2 Fa Nose units Mail (1) do not GOM Rhoe'AY a'B21 add(2) am la n Bbdr 2, impose, Pnvab Road'E', shall have a mmimum hurl se & of Seel Gen the rg Mof-way of R Read'E'. At enter units MAD have a in I a mum M1we setback of 5 feel, per B m 419 offfhe Zmin9 Omeanm. 3. At BbM ezwpt 7 and 8 may be used for resldedlal uses as by Me unit lypm listed above. 4H At rear yeses (exmpl Nose adjoining Road-P) shall haw a minimum selack of2D free. 5. Bmtive along Read"E' shall a're a minimum rear sdback of 5 fret 8. No sbudums or lets shall be permitted In ffe sbwm buffer an an peservad slopes. No lhesauxe slopes UMln Me derebprmm shall be disturbed. 7 As applicable retaining walls vdthe Me development shall naval ffre design 5 acts rerylred for the disturbance of managed slopes In Bedlen 30 7 5 of the Zoning Ordmance. 9. Total allowable residential units shall afi5. 9. Road"C Is shown of possible future connecron to Tax Map Pats 91-13 toe ezlatlM antl lb Wupon demand doe County IO.Road"B1-Isshmmasapossible MureconnectoraTax Map Paw191-10abee ndedaMddiw upaldemand doe County 11.25%of the required dormwda gmllN treatment shall a pox ondle. SWM FOREST / OPEN SPACE NOTE 278 acres dale adds Mll de page fir a SWM Forest add Open Spam Easement. TheB Favl and Olson Spam EasemeM Is subject to the a adance set toM by DEO In the Virginia Slommaler Managanmt Prcgam. The areas wit remain uMiAuad In a natural, vegetated stag. except for advice as apprown by BE kcal pgam aM ,so&as bred management runnel of Invasive species, replanting and revegetding. passNe medstm (e g, halls), and Ilmlfed bush hogging to malntio n desired vegetative community (bid no mere than four times a War) NUTRIENT CREDIT PURCHASE NOTE Thy plan requires to purchase of 5591rwr phmphorous nu hem nedts GALAXIE FARM SUBDIVISION EXISTINGUSE Slagle FanIN ReslO al PROPOSED USE R ... Use 65late 42 Single Fill DNadM 823 M.I .a (T-fi.usm). LAND USE SCHEDULE ExlSLNG Area % Building 010 arc OZ% PavemeM 050 arc 36% Bieexalk OCOac 11% OCm Spam 1310 arc 952% TWL= 13 TO arc Ust ry, PROPOSED lea % BMMIM IAt arc 142% PaemeM 295 arc 215% SNewalk Dal arc 3]96 TobllmperMults 540m 39.4% own sham 370 as we%Brp an we% Took 13cm arc IODA% SETBACKS 1-Fa frond loaded garages, Me porch pr bslding fam mil Oe a mmimum of 3 kH loser to the stared as measured Guam Its hm of the garage Moor. au For these units that (1) do not Or Roads 'P2-a-W add (2) and laletal in Mock 2, no Ibe ff Roads Road'P, MAD ham um front selba of 3 test Gam the rig judeffsAar, of P WRoad -P At all a nits MAR ham a IdMmum ficnt SeNatl[ of 5fact, per SeNon 419 of the Zoning Centrom 3.1 rear yards (exact Nme all a Raad'EJ Shall have a minimum Ramada of 20 feet. alS Bums alcNR 'E' a Gal l have a minimum rear s bah of 5feet. SUBDIVISION NOTES 1. his wo does me lie in a din in break handful zim. 3 Ray. are no Mwm paws of burial in the pagerly. 3 Ims Propertyis not within an Alheamab County a GN of Clald4sviiewM wl w'atashm an an agdmloman bms ll eisthch 4 Stream buffers are shorn on plan. 5. Parwl(15%9(and the rmieue d(91-15,$gl-tit(dada I in bufdg Sin Mal rumples hen section 421 of the Abematle Can* Shall Onnel-. VDOT NOTES V DOTh Ind devebpuam sort staff (516987-3715 or SIOfBT-3718( Mull de wW 48 hours m advance of any annlpaled rme .uMer debris. -The pmrillce or he or her dmgI Mill re dof xm mz In HER VDOT ego ows, on a etlry bests tod up and aeHe VDOTS Smart Tmflk Cenkr5403 (32d500T, crashes Meopof of t beer, reots pto be Mn su VMAR OOT far ed inwtiry,. arm i mum nB hours advance MIM bl of a p and dbM the suLg and stone hem M regueel by VOOT"Al l areas elevated below existing pavement shrew add v ntlmr zone, d the synonym of each war all shill and baIXnled to from an appmwmate 8:1 vreege, gavel es evSeg pe'mmdSudas for vie." aM p...n M.1.er bdtc Methal-rremcsallamaimaln.ear, mmwmm dthelMmaM run dma.lamnm o-awd lalva'Y.whr111Ns, seAa ae)- arc umseg ntlaewor mabidnM male Ilevem besklweEMN eumM eon pce'Mo (i( iMaaeeltskrdtl'e seek maniAM'And lobe mpimmVWTldndapnsssbmntto Parnryigmbers aSffar anMUMaafifine s eroae is resdt.lo be saemthed mvdor mrrewew one approval paono pawing ommmMa. GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS I- The plan approving authority must be Tall one weak prior to the pfemwsWLan mnkrww ore Plat war to tle mmmenv t d MMdlsurbingactwi aMonevreekpaiorlothefinal inspection. 2. AS erosion and md,MM mad measured w,If beconstructed and maintained wmiWominlmum s Marls add sµ Ell .mot its Vegeats Frokon and Sediment Canino Handbook add Virgin Regular- VR82502{U[Shll add Sediment CoM l RgdLam. 3. AS nmlwaM llmentmn plover Mda amCeWstMbdeedg. 4 Awpya vie approved ero5 l plain Mall re mdnMlwe an maybe Mall Hands. S..r-.a R) be Samuel bM1 dg bner a supplementaryerosion vh dmplants Has m(erlMuel mtb aMa pl lboflNeeapbenn mmamM'mOTO2lrpnsible! saaon uv omany additional emon means rum ors mw ary to Mevmtaadon add mderenMHon as deMminad by the plan approving authority. 7_ NI disturbed areas are to drain to approved sediment control rum ors at of Boaz during land disWr MaiH and dudg sbe eevabpment unto anal slablia ¢actueved 1 Dung bewatedng operation. waterw,b be pumped rum an aMroa fladg herd, is Tz mmactor than inspect all erosion control measures Mr Ntr1 add MMmtll mnonprMadg radaflevenLMy reossey repabs oar deenap to maimam the enedmenea one erodan mmol dclbsshdl a aa'YYareLlmery_ 10. Al fill material to be Uan from an rural designated mares. 11 Alwrotemabnabsbdlbeekestoanappmve row arm.Eann n1halla FM meleddamry, heeof rm6,dun[¢. wool. anRm and dna, eras. 12. Borrw or waste areas are to a reclaimed all? date ammpLon pa ZoningOMFenm section5128. 13. Al law Ireledds sae a mre Ms transported In mplaN lw Hilld the Case of Model 14 Porrm.', nl or wash fiat Ninvolv,ngindusmaLNp power agukmn1 I M limited to the hours of 7: Main to 9 Al 15_Ponew, fll or weak cIIVIN shell be mndllclM In afar manor Ndmaneim lateral support w oNe, to minimiea any favored pnymi,p ml damage to adjacent ram add Iaprow h, add damage to any public street because o sloessinking, ordall 18_Tadeuekper shafrmrva mengM1l to lnslell, meimab,re mnWN to parmanenl hove,rvalermenagemem latlllties ware applmne all Person mnvll measures resulted", a plannrtgardL dma safe of any lot, unit bufibmg or other Eaton of "'I 17. Te nary stANlbaeon shall be temporary awsig and mulTing. Swdlgbonaat75lbsiwm and Inthemoehs M5 tmn W FeMueryto mnabt a SOI50 mix of Mnual Ryegrazs and Cereal LMmx Rre, or In March and April to consist olMmel Rye, d Ma/ mhaugh Augud to consist of German Millel. Straw multi is to be apoI at Bdbslt00sf. Alerna ivm are subled b appraed b)la CwntyermionmMol impted r. 18_Permanent mushigned shall be time and bNliter, perreanenlweding, andmulcw Agrlculluralgrade limmOb SMIIaappald MbsllOONf inmaporatad into Its lop 4.5 ineMs dmil. Plat- shall M applies at 10001bareme and mmsisl No l62 10numenl orb. Permanent seeding shall be applied ad lffil shore add consist MM%wdw Vy 31 of Tall Fescue ad d5%FerenNel Ryegam orKlt,u yBluegrass. SNawmu1LLsmMappliedal BOIWl MMAbambveseresubjMmapproves4Ne Cmdyeosimvnd Inspector. 19.Maintenance :AtMeasures are fir amspetled vxldy and after each rdnfall. Mysamageordoggigb.W lad we--bba repaired immwlateN 5111 Naps are m a cM nM waen 50%dNewd gage vobme is filled with setlrrerd AI soled amm ere b are edMwhenmoseytoachieveagars Sandafgrms. SllenmaMdheniondykeswii areaHMCIFgsed tbhaff heir height must cedeated and repaired immediabN. M Al temporary erosion add sMimenl control measures are to be snorts u in 30 says of anal site SaNi ap when measures are -longerneed.,subj bapprovalbythe Count/ermMmmrd Imµcma. 21.This plan shallavats bNeownerems-tweiea permitM n1yeerMne Bale dadxoval. lYlMerFm Ordnanmae on 1z2B4G) M Permanent vegetated wall a Inse11nd on all denuded Areas MHJn nine lit) month affn the data Hs land dsluding must, mmmenced Ho on (fmmanes&when 4207B) CONSTRUCTION - MAINTENANCE OF ACCESS During m¢mudion,M as nter ffhe mmbM pgedm M,iM ulifize Galindo Farm Lane shall a maintained. Rekrto Bheat C10C13 M details on maintenance dads during mnslmcnon. STREAM DISTURBANCE NOTE This Sqd 4 subject to U S. Noy Caps of Egia m 2017 Normal Reamfl 1e(N-18)General C MomdGCs). Email WPO 2020-00037 TAX MAP 91. PARCEL 15 & TAX MAP 91, PARCEL 9 ALBEMARLE COUNTY, VIRGINIA VICINITY MAP SCALE: 1'=1000 L `,R K 4 0 p o O NL MrLINp p 3TR RX A� .LAX Es/E O CRECREEKMILL 9Madeasocal Shows, �a°ux LYMAX HILLS B L EYXOVI• I7C Corer Ml,e010 ml MILL CREEK HOMESVILLAGE fi °> r 1 y AVON PARR A! Map prwvided by Pnoak.man SHEETINDEX C7 COVER SHEET C2 EX. CONDITIONS C3 SITEOVERVIEW C4 GRADING B UTILITY OVERVIEW C5 SITE LAYOUT C6 SITE LAYOUT C7 GRADING & UTILITY PLAN CS GRADING & UTILITY PLAN C9 ESC NARRATIVE CIO ESC PHASE 1 CH ESC PHASE 2 C12 ESC PHASE 3 C13 ESC PHASE C14 ESC DETAILS C15 ESC DETAILS C16 SEDIMENT BASIN DETAILS C17 MITIGATION PLAN C18 SWM DETAILS C19 STORM SEWER PROFILES C20 BMP PLAN & DETAILS C21 BMP DETAILS C22 BMP INSTALLATION & MAINTENANCE SHIMP NsIN RIN 3g oawammuva'� aeagaweexaraa-cm VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 3) 2020.10.16 FILE NO. COVER 18.025 C1 LM.91-13 COUNTY SCH( 7F`r i OPEN SP, AVON Ti CLAUDE S.SHEIHORSE,Z & ARGINIA THOMAS SHELHORSE OBA 049-86 D.B.521-523 PLAT D.B.337-255 PLAT S-\ THIS MSG 0 LANE DELTA RADIUS ARC TANGENT CHORD CHORD BEARING C1 1'3O2 G 5689.58 149.5] ]4.]9 149.5] 575'40'51"W C2 1 0-1510" 5689.551 25,091 12.55 1 25B9 576nor 59'W C3 1 61 1472,401174LO51 87.13 1173,95 93'32'S4'W SBB ♦` MSG B LM.91-11` SCHOOL BOARD COUNTY OF ALBEMARLL,VIRGIMAJ D.B. 5258-620 OBT979-46 & 47 PLAT 4 a'♦ T3C3 MSG B B If (foot) no MSG B EAfrs T.M.91-10 1 ♦- 1 MW COUNTY OF ALBEMARLEVIRGNIA (%9g25 MSG a OB.1979-44A6 & 47 PLAT \ \` 0g% _: y♦ ♦T /. / / / • / ' COUNTY OF AR INIA _- =�/`; `_ � / _ •,fy / � • • 47 PLAT D.B.19]9-44,46 & 4] PLAT 44.46 K @JIWIN61RRy1�. :FF 721D3 MSG B 790 MSG A N4916 15 W. - 121 - _ _ _ " _ _. / rssxw"— �� - n 1 D 3 t _. "PE �f TM91 1 1E Till ANNITV ESTATES,LLC 1 T. OB. 512-678-A PLAT p B.325]-]02VD,L94 / / D.9.4990-D4 D.B.3480-44 & Ell PLAT DP.4894-228 PLAT OB 550-379 PLAT /%•/; 1 T.M.91-16A1+ Per M aMndmnumL The ogecl of proper Permanent abandonment Is AN We t canlamnamon non n its Around water new, we Me well. A permanaXly abandoned well squall Le abandoned In tic bllowmg finer'. At cal W malenal may fie sa vai haste the well is plugged, It shall he cl Mel hum and sunane 0 the emre depth of tic xeL AN aswvUm fieedam hon immadlms Nat mayinledere wfN plugging(seannid petitions. T¢ well shall he MZMAh MloNated prior to plugging (sealing) 9tted wells and unase] weds shall he bacMlled with clean fill to the water IeM. AMnkd-MAk Mal ph, shall be placed immediately above the water level. Clean fill shall be placed on hp of the henlande plug and brai upN alleastfive fact from Me ground surface.Thetop M¢wd e het oftll msag hprgenl shall be removed form n the bore note If an open annular some s present around the well casing, Ne annular spat¢ slid be MW wfth grant to Na maximum depth pokable, but less than or equal to 20 ke1. Ao�foW-Nmw thick ceenl benlonde grout plug that completely fills Me bore mid more shall be paced a minimum W five het Mom the Around surfare. The remamlrg spare smu be filled whim dean fill w1nM is moanded a minimum of one and a[we tl surrouMmg groundsunam B. wards car Normal walls abandoned in this manner shall be treated asxells wfth respectadetermmbg the minimum sepaaWn distance to sources otmntamir ion Ilsted in Taba 31 M location ofOrse wells shall MI mnffy maMM for future location. Weds consmtled in allapsrg maanal shall M ampleledy tilled with grout or day slurry by structural Mal pipe tidally extending An AEG bottom of the well. Such pipe shall AN misect, but remsln submerged In grout, aw tlp well is filled. NEIk constructedinconsolidated rock fomafions or which pewh zorwa of ansotdaled rock may he filled with sand or gavel oppmia the zones of consolidated muck The hp of the sand or gacel All shall be al least five Mel blow the top of the consolidated roll and at and 20 test below land surface. The mma er of the wed shop W Nkd Myth grout or ray slurry. Other abandonment procedures may be approved bytic dMsan on a case q case hesa. Teti and explorallon walls shall be abandoned In such a manner to present Me All han being a chants for" varecal movement of water or a source W condone fro to gmund water. 4Nan bored walls are Awed and a water source a not found, and the casing has not been pawed n Me bore hole, Me has hole may be abandoned by backbiting with the Mre spoils to at least five feet hekw the grand wrace. A txnhet-Nidr Aentonlle grout plug shall As paced at a minimum of five feel from the ground share. TAe remainder of Me bore hole shall he filled with the bore sumps. NowPGST `Y -il/ j J4 AY bNo ( 1a L y A' ➢fi'/ 5515191g' # - c RI) 17919 FARM LAN 1 o 10' PAVT� 590,59.2� I�Ai 61 l T/ w 361 P T X SHIMP w 4NI r `x � 6h m e� ENG�NEER�N 39 4' 0 - v /a G EMENT U Mp a Lic. 4_"5I�183 p0 10�1'aL(9wi BKRU1 LEGEND ��� SOIL TYPE BOUNDARY RUNOFF FLOW DIRECTION 50 0 50 100 160 Milli ii2mmomol Scale: 1"=50' VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 EXISTING CONDITIONS C2 SHEET C5, C7 t------------------------------------------------------------------------------ -------------------------- SHEET C6, C8 LOi 1 Oi-- 6890 Si B _ .-. 5.LOT 4 { 92fi Sf p LOF]Flt�;i fi OT T•.BOB SF I - LOT 0 5T 3 f1 771 - IY II 14348 4 4 5�63J SF 1 �513 BaW — IF B5 0' LOT " 10.420 3 FIT 55 L41 By / a F SA19_.- / I / ' ANEW 30' CSR LO BI -1�1 `S ESN�i LOT 53 •JOB 9F I Y. 2 I � --------------- — .L — L — — - — — --- ='— < — '--- ------------ 3]9 OF 5FZ4]8S' 0 J / i • P95 5f ; 0.5fi955F OT 65 i. I B• Y — 5fi0 SF I: I • !j JRO B (('�Lll��ff 1 III I � i@T 5] JF '� N Y• e 1, ]89 Sf ..II I ; • av��y'WW B]A9] �t-J 4iL T 1 • i'J Is��■ �sa;asas mss�e:��az�s��ess�"x mill O i L------------------- ............. - ------------------------------------------------------------------------------------------------------� U .................... SHIMLOOKANNING P EN IN RIN 3g oiwummuva'� •n'n9swax•rffwrcccw 0 U MP 9 Lic. .4_"5I�183 pp 10�1'aL(oei pBB B�AL VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 SUBDIVISION LAYOUT OVERVIEW 50 0 So lao 150 Scale: 1-50' C3 SHEET C5, C7 r - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -i . . . . . . . . . . . . . . . . . . . . . . . . .. SHEET C6, C8 7i I 'ter L i SHIMP NsINRINs�t 0 0 U MP 9 Lic. 4_"5I�183 pp 10�1'aL(oei pBB BgNN VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 SUBDIVISION GRADING & UTILITY OVERVIEW 50 0 So lao ISD Scale: 1-50' C4 I� 12 gBENTEN IAA¢, IV fARMNUNEECTWpD A TO CALKAE 9.l-`N MILL W 4N 1EN C( IE OCOLCOYUN I MP� HGt [ONNE[nglE 9V]b. ROW (M Fy OTTO RR-3 /f NO LAWNS' �( i043T 4 BASEMENT fT ADO BFE-990 LOT 47 11 LOT 51 4.929 SF 9.]40 SF Fn 985 $ BAYIih9EN' � l;3 m eF 4 — e y y E ow .) LOi 46 20'0 LOTI53 .09Y3 L -4.AA' S1 fTE-691 FFE-0. / LOT 89 W 20' A SNIAMEN E. .. B ENI W CENT 100" BL20]fi • A 1.1 fEE=a90 " No vuax6' 3� p C Qo/Z fiuN3A0' m C a LOT 63 5.419 SF m Muff ___ rtes F� II Nfls moi A] -- SUB .v 2 0 0-1 iFE-90z �. R25o UNE II R1_I o 250 1 _1R ■■� S TOR,B 10 IRAKL —IS*LO 10 1RAKL LANE _ — I — TBIRE LME : � I NEW R6A L 20' FV 54N SEWER ESLIi 3411 ].3]9Oi5] SF � ESMNAC£ T r .4'95 i, 2338 SF � 3 .0 FFE / TFTE 4800 LOT 44 1.152 Sf 'Ip P.IgpNF] ® TFSE 485.4 �+ � i LOi 154 LOi 4J J,a usz s u ceo Aa LAB i0YMN0YE $ 0 B fiE=0B3 1� EiE 4BA] I 6 Iil oT z 1 ]8 s e' _ ry i0WNROM _ w P 1� FTE iBAO'i z_ i m IML LOT 41S n 5 S y JAN Sf 1� LOT 12 LOT IJ LOT 14 z.l]z SF 1,455 SE 1.8M SEI OW Bf 0 MNOYE Y F' [ yt c � i7 FfE�48]4 m (61 W.0 4 y L 1,4]0 SE M-AAME siL ae2 ] ij HOM NNHON MNHpI LO J9 2.887 SF 'NO i 008. -OBA E=4808 iONNNOME NUIW-J z'�.0 OLJ30'3 NEW 20' PUBLIC 0 RI1 ERE 402 0 ORaNAOE ESMT 1 /ROw( ) FFE-PBg 0 B R LIP '1^•••LANE I�]100M m Rp60C 18+00 rez5.p�/ —'`R20.0' mAKL uuE _ _ _ o R -Sf weue adW - 1 j �y{� PARNINO LANE O NW0.0'� I�B�"oo cud6�l_ NIN BTR z40 z z4.O' ELEN.£ 8 2 m 1ao' ___2 _ ' No Paevlc' NJ¢9 Im-3 _ _ _ _ _ No Pwxxc' �_ M3N9lm-3 I a RSo.o' BAN LOi ]0 LOi 31 LO LOT 33 LOT 34 LOT 35 LOT 36 L01 31 LOT 3B ESMi 3.1]0 Sf e32 I.B65 4 1, 10] ,3 4 ],188 OR 3,163 SF 1.85] W 1,524 BP 2,957 4 , ACCE55 ERMT LF- - LOT 65 13.014 SF rEELti9z III III I /. I III III III I .� III III III I III III III wai III III o irl sv a/III III E 4M.T I\ III III B IIp.R6 Ac I / III III I]o o' IT, BLOB I /III III 1 O /III III III I�r I I^I I III I/�,1 III III III :♦III rWIVT wi III III/ III 1 1 Al I 1111 1 I' II II III II CPEN ID Cl A oSPMEI�FOgE9 / III I v III III // 59.]1fifiE I�` I EASW94TWYI M"171 1 III' 11 1 r 0.65 LAES o-31I1 'I' nid�i a III �.Y'r III �I NEW zDOE=L q RAP OKR CO. ACE ESMT y�+ rW „11' I_A I I I I I I / q .2 I .���91TRIP 11 1 I I I I 11 14� ail I I I I1/ 11 1 III III III III III kkkkkk / v.w. wuuc s P 1RT�Av£L / ORa AGE ESML MVLP1 I I \. ��xr1 1I1 I I I I I `".. ao / / 9 - 1 1 e �� TPI I slq{pAn °'� GUANEI TA ,ARor -W§*, PEN ®n CRo_ M% 3 "� 'a■o NL E ASEHLTiw �r ao TO EXISDNC, ip 'IYJ PPRNI 'N3 P6i]N QR LOT 80 NID q0-] ! Pb3 WV ■ $�5 �FrL„ 011 MI I 0,]43 s III NEW 35' PVBII �LU�NN Pa 1RAIL� 1 O pyf�3I C.N.A. EsuT ■ l WWu v iT(=00 ,� Y' III ULCeI JrtNL III III ■ III—oxu III xew WA iy III III III �MULWRE) ! h�S OR INa£VE9,li 1 l A5 I1� 1II,II1 II II III. di 58 s�sE I I 1031�✓ o I a�� I IF ��I III III I� III 9L B 8 1 �. ✓ � rvw-.. T 91ouLq — - -- III A 3�1 IIj III NEW 30' PV811 _"" weaxALE EsuT I � I I I; _.-TL-- j III �.yWrl III III /III III III III III III %III (^yY`�I III III III III 6.FO MT/ KABSF �, III III A T III iII 1fi1p1. III III III /4/_C siF-m `I III III III I I � III 1'�yw III III I�� I a�-v 'III III III II�I'I III III d' IIIZV 57 III III III �}i L�y oPEN D OE B III III o r o°,y ,rq 5],4OR p ��I III III III I M I�wv' III III d�� ��`� III III III!.° III III H III R3_I k M1-15P "� 30 0 30 60 00 SC.1W: 1'-30' l SHIMLOIDNANNING P EN IN RIN 3g OV2OIIFdN1EVA'� acn@swalNxAN O MP 9 LAC. 4_"5I�183 p0 10�1'aL(■ei pBB B�RAL VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) XNA0.13 F 1d� • A ....... FILE NO. gf,. 18.025 <; SUBDIVISION LAYOUT PO � +: C5 LOT 1 I I xziz S B,a90SIR ROAD — - u• now ]ff BASEMENT BASEMENT BASEMENT FFF-518 FEE-523 NIBFE=506 BFE-5U PFE-510 SIR BASEMENT NN=Sz9 -518 a M. LOT aST III I IF Twz s � � III i II UI i I ROW (T5 A TO U I hNM' FAMNLANEROM W. A.IWTI MALL k i O1£RUY E MSITCN. MAINTAIN 9Lx l-V AXNPLEFTNCONXECTONE� ROW ITYP. FP.RM LANE - --- GAI AX1E - --- . - Sjw,20'vESM oRpxAu Esur I — — — — — — — — — — — I CiEX SPACE C I 2da03 3 LOT 11 664 SF __—_•—_— tw=_— '—I I { 150' 26.0' 200 uNlxc' I, o --xvAPxlxe 1 OIIn W l NNW LOT22 V.961 4 LOi'i 23. .O 24 IiOW (M.) _ EF 4s]' si Q LOT LOT 2. LOT 21 LOT 2. LOT 28 T 4LOT ff J,196 sE y666 sE Lan s 3.1aa ff SOf FM-50EAMEME FF =502 BASS TON IHCME TONNHOME TOMHOME TOWHOME BfE=692 EFE�EXT FF493 SLAB FFE=499.0 FR=N7.3 FFE-4Efi.6 NI BFE=490 FSE=491 CA LOT 12 LOi IS LOT 14 2,172 SR 1,455 SE 1,6]9 SF, ONNHOM ONNHOM TOM fE=40a. =985 E=164 XEW 20' PIIBLIG S� 9GX '� R1-1 OPAINACE E9.li I TXG S1PIP WL LAX ]+oo� rEL urvE _ — _ xG LANE LOT 31 LOT iz LOT 33 1.655 SF 1 ff I.673 OR e 9F LOT n 4.929 SF STAR FEE.49s I o I$, 5 i5 _OT'iaa 0955E SLOB FFE=K1 _ R5.0' R250 _ LGC 22 RURB RE 16 00 g - CROW (1) yf't G9 Yytsaw .� I^Sl % ww1'u?.w,AM��.r'4114'f"P`u2niz�'+4h^.w.t,"s.,yt ax` :�+...a��...,,F:..ss. h%t5 M1S nl,•iyevr r k .a4'! I / I x 30 0 30 Bo 90 mdw Scale: 1"=30' NO NY SHIMIANDRANNING P NsIN RIN 3g o..NNr W — AMNIA rXoiNffNiI.- 0� O U MP 9 Lic. .4_"5I�183 pp 10�1'aL(oei pBB VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) XNA0.13 FILE NO. 18.025 SUBDIVISION LAYOUT C6 1 y,r / xBIX / o Y' / f I \ X w __ gPrNL / 1 C 1JJ \ \ I I 1 V A44 f r\ II+ pp \, SA 15E Ai I r 1 \ B SEL1ENr/ 1 1 \ I IQ I V I B J I - i i B EERazBSAB - i sW1 - ESMT , � TUMNn E EFE-ae 0 ..., IfE-4Bu TU�11iXOME fTE-MM row�xc 483 TUYMxouE wqF - RlkNxcuE iFE-983.0 NNHWE TU " F-fE-OBB. = k roNH E FFE .0 r� 1 / \ I — oRANACE ESMT 5-xUPESTIM /u __ _ - Polc r _ f oP`or //Y NM i i m A s%y\xEMN PPs�NyN4s1 / -A- P sP EE S0 PERMANENTAMA AA SANITARY SEINER ESNs PLPiJ S SIR IR / BL iFEi0B5 1 / i / �' �r�� / / / / ♦.`. /EAS41ER Nfw s'eo' �, L /t / //// / / / twr , / / / I ♦`` / ass . HEW 30 PUBLIC %n If� 1\.+a'' �\PoF / s ' .dcl B � r ' I /Ewan' / � / / ,' / �.FETER PAmele .�o♦o` _- \.F� °`� /i / i i � I, SAN SEi NEW vW. REP.. �` ,✓ i ' i i/ ' /ORPI. EBMi 68� w _ ------- n, NEW3BPUBU - - '° ERANAGE Esur SP. c N •y� i EASENENT B l Ly Im ALREB /L T PERMANENT ASSA sANITARY SE. ESMT \ II (oB�'s_Noes Pur) \ 1 •BLIB ErE-4n I � m1� / I I I I sEMER EBN '.' h, I I , • I � I sa-R-,u I I\\ \ 1 WI I A ` MNTCHLINE- I. E 1 CHIMP BB \ '� ,� • "/% ENGINEERINGhl RENT t Syr -• \RP� It � i I � II- / Ay qiU� r�1ii��R � % l.' vA'� +n'n9swaxarEFwrcccw ME lu.0 gtNNAL£ ESMT • Sll/ "✓ �-/ \mob N I ' Po '' NEW 11 UO YB (; HAY % DNA NA E9.li B-i:SkV LiE. 45183 > 1 i / _' yr' ♦egquL 8`w' iJ ♦ i r • / 1 t i / � � /� VSMP PLAN FOR , GALAXIE FARM CA ; SUBDIVISION 414°' so o so Bo Bo ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 RIPL',13s tt2)1020.f0.13 t01f mA wu0.PsxuNE- Is_�kEE — oPriaN­EN°9i • <\=ew4e'N ' 0,09 ACRSs y7 5NB / // i �i :.:'% //�/ , iirs•. 1 V s d's T' /lee' /� FILE NO. 18.025 GRADING & UTILITY PLAN i — — r NI ` / / 'gip �y� N•'M's= ` INIMNIIANAM, E ESMi ♦ \ \ \ ` \ \ J/ \ l_ - / ] _ \ / Y '� 0.9 v TEE (2)8'OV —� - / - - / � --� / / _` / TI 8 -I � _ I— - I /�9a. � :Y v:'. Ew \:. Bw �.•_. snN sExse EE�wr \ / / / _' _ _.1 -,•` - - - ' <.. 1 < c, 1 / I Lx —i1 �' xEw nStl]0' / I / II ( �; _ _ �ieao — � •� . _ ----i / / � , I: I /.:S _, y. —" / swu Feaun BSMi / / , / H M F�iesi \ S ■I� � ■P — n ;" E.] ,v LANDRANNING PROJECT MANAGEMENT / .AF.VN. RE. - v0.'� X_NGS_ FfE-333 g2 BNi _ / '/ / ' \ - •L __-__SFr- 5259 / / ' / ' i / / / BXF 1 MB SIpJIY / / 36 500XBEAMI y ' / X /' /' / / IN ].fi 13 YGOr STEVE / • j I Ni -- / ,/ BOTTOM )F NrBE-0]5 N. 00 C AM TO ry� y rOYMXOME fli 4]],00 NE ONNHOM ONN M fi. E=4B\.6 I\ IOYMXOME G1 NEW rveWPEMLB ( I ISE-ae3.o o I'L n r ` �\\ � I 4v1 � � � ~ � �� I I _ / r i I / 8'. � i a 4� + •-• �(=._15. -"� "_�' � .� ��I •aB� ]W . . ' x-7PI 7R „ I , � i I X-zo uy�' > ✓ VSA PLAN FOR G LAX E FARM SUBDIVISION i'I' / / rte s I lic-szo _ As ` _ l — — — — bn Ex / Ew � Xa.IE TJNNXOME iONN E iOYM E TOMNXWE FFE- FEE- 3SEY(ER E]MT "T _ - - B _ Xo E µµNNxau I X aME rowgxo rovmxoME _ ALBEMARLE COUNTY, VIRGINIA fE-696 01E-a93 / -s00 F 093 / _-iLA6 F 880 fIE-N].3 ifE- 6 iFE49�.0 ffE- 0 TOVN .] FFE-LBNE IB]. - FfE- / mac- - / / art-wo - - IiE=a9, I SUBMISSION: .I / _ \ ME w W P., t — — _ _ 2020.07.02 / / ] I $ __ N / ____-_ ORRIxRQ E9.IT ' _ r xOPE sM , - xoPB s ro-xMMEs _I AGE, s1 w vv - _ r 1> M A w j i—_—.-eso=='� _ Aye _f .sa FILE NO. / 18.025 IGRADING & UTILITY PLAN 30 0 30 eo so rww X, Scale: 1"=30C8 PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROTECT DESFRPTCN MIS SIZE IS A FARM OFF ROTE 20 1N ALBEMARLE COUNTY BEING DEVELOPED INTO A 65 UNIT MIXED HOUSING W WINSION. TIRE TOTAL AREA CT DISTURBANCE IS CO ACRES ME PROJECT INWLNES ME FOLLOWING WORK ACTNPES 1. ME CONTRACTOR SHALL FOLLOW ALL LOCAL AND SPATE EROSION AND SEDIMENT PERMIMNG WWIREMEMS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE With ME PERMIT REQUIREMENTS, 2. INSTALLARW OF TEMPORARY EROSION AND SEDIMENT CW MEASURES AS MOM ON ME PLAN AND DETAILS. 3. GRADING AND PLACEMENT UP FELL SHALL BE IN GENERAL ACMMANCE AM ME PLAN. 4. ESTABLISHMENT OF PERMANENT STABIUZATCN OF ALL OSTURBED AREAS. MIS PROPERTY IS BORDERED ON ME SOUTH BY ME 20. TIME PROPERTY IS BORDERED ON THE EAST AND NORTH BY PARTIALLY WOUDE0 LOTS OWED BY ALBEMARLE CWNLY MICH INCLUDE AN ACCESS DMNEWAY. AND W THE WEST BY A MMVENANCE ACCESS ROAD FOR THE ANNITY SUBMISSION. NO OFFSHORE SUPPORT AREAS, INCLUDING IMPORT OR WASTE SIDES, ARE REWIRED FOR MIS DENEMPMENT. INS THE SIZE CONTAINS THE FOLLOWING SOIL TYPES: ]ORB - RABUN CLAY LOAM - 2 TO ]A SLCPES, RSG S R83- RABUN CLAY - 2 TO ]S SLOPES, HSG B DO - RABUN CLAY - ] TO 15S AOPES, HBO B ]203 -RABUN CLAY - 15 TO 25% SLOPES. HBO B ]ORB - MRS, CLAY LOAM - 2 TO ]S SLOPES. HSG B ME MITI AREA ON ME SIZE IS PERENNIAL STREAM COW BRANCH MACH PUNS THROUGH THE SIZE. CONTRACTOR TO USE EXTRA CAUTION TO PREMENT SEDIMENT FROM ENTERING THIS STREAM. EROSION a SEDIMENT CONTRRXf L SAFETY FENCE A PROTECTIVE BARRIER INSTALLED 10 PROHIBIT UNDESIRABLE USE OF AN EROSION CWMO MEASURE STV AND OPEC. SOL 2. CfilON FN1R6u(!:: INSTALL AND MAINTNH A CONSMVCTON ENHANCE, AS NfCfSSPRT. MAT M.15 HE 11kUIRMENTS Ch 510, AND SPEC. 3,02 AND CONFORMS MM ME REQUIREMENTS OF ME EROSION & SEDIMENT OHHOL PLAN. I 3. SILT FENCE: INSTALL AND MAINTAIN BILL FENCE THAT MEET$ THE REQUIREMENTS OF Sep AND SPEC. SM.. HIS SILT FENCE SHALL BE INSTALLED AS MOM ON ME EROSION & SEDIMENT CWHO PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -DOER RUNOFF BEFORE IT IS DISCHARGED FROM THE SIZE. ME SILT FENCE SHALL SE INSPECTED AND YMNTAINED To ENSURE CONTINUED PERFORMANCE 4, TFMPORARY SEDIMENT MAP: A SMALL FUNDING AREA, FMMEo BY CWSMUCTNG AN EARTHEN EMBANKMENT MN A STONE OUTLET ACROSS A DRAINAGE SMALL TO DETAIN SWIMENT-LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH ONE TO ALLOW MUST OF ME SUSPENDED SOUDS TO SETTI£ Whi MAXIMUM EFFECTNE LIFE IS 18 MUNI SM AND SPEC. 3.13. TO SE WNNERMD INTO A PERMANENT DETENTON Will AT ME END OF CONSHUCTON AS DETAILED. 5, TEMPORARY MNERSM DIKE A RIDGE OF COMPACTED SUL CWSHUCTED AT ME TOP OR BASE OF A SLOPING DISTURBED AREA MICH DINERM SEGMENT -LADEN RUNOFF M A SEDIMENT MAPPING STRUCTURE. MAXIMUM EFFECTNE LIFE IS 18 MONTHS. SM. AND SPEC. 3'09, ME CLEMWAIFN DIMENSIONS YALE BE MOE STABLE BY ME USE OF NEW LO-268 DESIGN STANDARDS. B. TEMPORARY SEEDING TEMPORARY SEEDING SHALL BE APPLIED To ALL DENUDED AREAS MHIN SEVEN (]) DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) PN LONGER THAN 30 DAYS TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH SM AND SPEC. 3.31. ]. PERMANENT SEED NG: PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS AMID SEVEN (]) DAYS AFTER FINAL GRADE IS REACHED ON MY PORTION OF ME SITE PERMANENT DECIDING STABILIZES DISTURBED AREAS AND ENHANCES ME OF PLANT RESIDUES N OMER SUITABLE MATERIALS TO THE SOIL ROEON AND FWTER THE MO" OF VEGETATION. ORGANIC BEEN FOUND TO BE ME MOST EFFECTIVE. CT MST CONTROL OPERATIONS NECESSARY TO MET THE & SPEC IN AS REWIRED M CONTROL BUREAU AND AIRBORNE of R PROTECTION : INLET PROTECTION MEASURES AROUNF ME NEW INLETS SHALL BE PRONDW IN ACCORDANCE MI Sell. AND SPEC 3.07. SILT FENCE, STRAW BALES M TEMPORARY STONE APPUCATMS SHALL BE APPLIED AS APPROPRIATE FOR CURRENT GRADE CMDITONS film R PROTECTION: RIP-RM SHALL BE MISSING AT ME Ou1FALL OF UVEREYANCE CHANNELS. CULVERTS AND STORY SEWERS IN CONFORMANCE RIM SM. AND COSPE3.1& CURET PROTECOON SHALL DE INSTALLED RIM AOOMPPNYING SLOTH SEMERS AND SHAH BE INSPECTED AFTER EACH RAINFALL EN1:NT AND REPAIRED IF NECESSARY ANT SEDIMENT BVIN UP SHALL BE REMOVED. THE FOLLOWING ARE ME PROPOSED MMAC£MENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTON: PHASE 3A 1. INSTALL CONSHVCTON ENHANCE OFF TOTE 20. 2. INSTALL SEDIMENT TRAPS 1 & 2 AND PERIMETER CONTROLS. 3. PREPARE SM FOR STREAM PUMP AROUND OPERATOR. p, CONTACT COUNTY INSPECTOR FOR INSPECTONS 5. WIDEN FIELD CONDITIONS ARE APPROVED, COMPLETE MLNERM A & B INSTANTATM WICKLY USING PUMP -MOUND. BHBg fl 6. AFTER WLNERTS A & B, PERIMETER WNH AND MAPS ARE INSTALLED, Will ROAD A WITH MINIM& GRADING AS MOWN ON PHASE 18 PUN. ]. WIDEN ROAD A IS COMPLETED AND HAS Ell COURSE OF ASPHALT POURED, KNOW EX. ROAD. B. CONTACT DESIGN ENONEER AND AIHMARLE COUNTY INSPECTOR BEFORE REMONNG HAP 1. 9. MAINTAIN PERIMETER GRINDS BY HAP 2 DURING TRANSITION INTO PHASE 2. PHASE 2 1. ROM A WILL HAW BEEN INSTALLED AT MIS TIME. MOW CMSTRUCTW ENTRANCE AS SHORN. 2. MAINTAIN MAP 2 & INSTALL NEW PERIMETER CONMOS SHORN HERE. 3. INSTALL STORM SEWER SYSTEM E AS SHOWN M MIS SHEET. USE CONS1flVCTM ROAD STAMILIZATM AS NEEDED TO MINIMIZE EROSION AS SEWER IS INSTALLED. DO NOT INSTALL STORM SYSTEM E CURB INLETS IN MIS PHASE - LEANS AS RISERS MEN. CAP OPENINGS. 4. CONTACT DESIGN ENGNEER AND COUNTY INSPECTION BEFORE PROEEDING TO NEXT PHASE. PHASE 3 1. ROAD A WILL HAW BEEN INSTALLER AT MIS TIME. 2. STOW SEWER SYSTEM E RILL HAW BEEN INSTALLED AT MIS TIME. 3. INSTALL ADDI CMSMOTN ENHANCES, SEDIMENT BASIN & PERIMETER CONTROLS AS SHORN ON MI5 SHEET. REFERENCE SHEET C16 FOR BASIN SEEMS, 4. CONTACT AIBEIAARLE COUNTY INSPECTOR FOR INSPECTIONS 5. WIDEN MEASURES ARE MPROVED. BECIH MANGRADING MO WARR/SENER INSTALLATION. 6. CNSTRUCT ROADS B. C. & D. AS ROADS ARE BROUGHT TO GRADE. INSTALL CURB INLETS MM INLET PROTECTOR. ]. CONTACT DESIGN ENGINEER BEFORE PROCEEDING N NEXT PHASE. 6. MAINTAIN PERIMETER CNMOLS & STMILIZATN AS NEEDED. PHASE 4 9. ROAD A, B, C. & D ALL RUNS BEEN INSTALLED AT MIS TIME. IO.UM.RES YALE HAKE BEEN INSTALLED AT MI5 TIME. 11. MEN ALL UPSTREAM AREAS ARE STABILIZED. CONTACT ALBEMARLE COUNTY INSPECTOR FOR INSPECTORS 12.MEN GENT SIM STABILIZATION IS APPROVED, CEWAMR SEDIMENT BASIN AND BAM LL TO COMPLETE MASS GRADING NEAR ROO E. PROTECT AREA WITH SILT FENCE. 11OMSTRUCT ROAD E & BMP I. 14 WNSMUCT ROAD F. PROTECT AREA AM SILT FENCE. 15.MAINTAIN IMPORTS CNMXS & STABILIZATN UNTIL ENTIRE SIM IS S MILIZED. 16.MEN SITE IS STABILIZED. BEGIN MITIGATON MEASURES SHORN ON SHEET C1I. CONSIRUCPW MAINTENANCE ME FOLLOWING CONSTRUCTION MORMANCE PRACRCES SHO BE FOLLOWED AT THE SIZE 1, ALL E&S MR. MEASURES MIT RE MEP(N OALY AND AFTER EACH DORMANT RAN EVENT ALL DEFICIENCIES IDERVEM DURING TREY NSPECPCNS NALL BE CCRRECTEO AS SOON AS PRACTCAME, 2. ME AS FENCE BARRIER SHALL BE REGULARLY CHECKED FCR UNDERMINING DETWORAPW OR SKKIIRCANT EROC OM SEDIMENT SHALL BE REMOMED AFTER EACH SM. EVENT MD MOM ME IFl4 DF SEDIMENT DEPOSTION PEACHES HALF ME HEIGHT OF ME CONTROL 3. ME CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORM IN ME CURRENT EDIRON OF ME NAGINIA SEDIMENT AND BOOM STURO. MANUAL OVER APPLICABLE COMMONWALM OF NRCNIA REWLARONS AND ME PROJECT SPECRCAONS. 4. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE MAT A GCCD STAND OF MASS IS MAINTAINED. 5. AREAS IMP -TOM SHOULD SE REGULARLY INSPECTED M DETERMINE IF HIGH ROV5 HAW DAMAGED THESE D]XT S OR CAUSED EXCfSSVE SEDIMENT DEP IN. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE MM ME REQUIREMENTS O MIS E&S CONTRO RAN, BMRWYENTk CONTROLS 1, ONTRACTCR SOUL FROMCE ARM MNNTNN ALL ISIMM NMENTN CONTROL MEASURES W AS TO COMPLY MI LOCAL ORDINANCES, STATE AND FEDERAL LAMS AND MEADOWS AMLX EE TO WATER PCLLUTW IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. COMPACTOR SH&L MINIMIZE THE POTFNIIPL FOR AIfl PLLUTCH BY THE USE OFEMISSION SM', EWIEIENT CN CONTRACTOR OPERATED EQUIPMENT. SHUT MOW O MOTHIZED EQUIPMENT MEN NOT IN USE, AND ACTMIY COUGHOLUNG DUST EMIS MS TNWGHNYUT NE PROJECT. li3•F.DY+IiY:IdMB[d/Lliir:4IIU W D4q OYNIRACICR SH&L V RESPONSIBLE FOR 061WXNC ALL LOCAL AND STATE MMON AND SEDIMENT CONMOE PERMITS AND MANTANNG NL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE PoM 11E PERMIT REQUIREMENTS 1, THE INFO2MABCN AND DATA SIM CR INDICATED MM REGNECT TO ME EXISTING UROERMOUNO UTILITIES AT UP UNTGUWS M ME SHE ARE BASED ON INFOWAATW AND DATA NRNISHED M ME OWES AND ENMM BY ME PMNERS OF SUCH UNDERLROUND PACILIDES OR OTHERS. THE CANER OR MOM SHALL NOT BE FEWONSIEE FOR THE AOURACY OR 55 7 SU CH NFDIMATaX OR DATA. THE CONTRACTOR SHALL HAW .it RESFW9BMtt FOR CONRRMING THE MRACY OF ME DATA, FOR LOCARXG &L UNDERGROUND MUTES, FCR COCRMNATM OF ME WORK MM OWNERS OF SUCH UNDERGROUND MOM DURING ONSTRUCTON. FOR ME SAFETY AND P%MCTM THEREOF AND REPAIRNG ANY DAMAGE TRUST RESULTING FEW ME ell ALL O THESE CCRDITMS SHALL BE MET AT NO ADOTONAL COST TO ME OWNER. THE CMMACTM SHALL CONTACT 'Min UTLITES'O MRGINIA AT1-8G4552-]EAR PMCR TO ME START O WORN. 2. MEX MRKING .WACENT M EX5RXG SMUCTI POLS, UTLITES ET:., ME CMTMCTOR MALL ME WARWR REMEDY MAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE MY DAMAGE CMHSED BY ME O VMTM OR ITS SUBORHACTMS SHALL BE THE oUNTRAC 'S 50.E NEPONSBIUtt TO REPAIR M FE EL THIS EXPENSE IS ME ONMACICHS RESPONSIBILITY 3. REPLACEMENT OR REPAIR OF DAMAGED SHUCNRES SHALL BE AT ME CONTRACTORS EXPENSE. 4. ME CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTNG SITE STMCNRES FROM DAMAGE AND COORDINATING NLRK SO MAT ME OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY/PROTECT EXISTING SHUCMRES FROM DAMAGES 5. THE CONMACTCR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTLItt OMENS, AMOUNT WU OWNERS RIME PROPERTY MAY BE IMPACTED ANN ME AROMA DEPARTMENT BE TRANSPORTATN PROP TO COMPLETER ANY OF -SITE WORK. 8, ORTRACTR SHARE NOTIFY AND COORDINATE ALL WORK INzOWNG EXSTNG UTUTES WITH UTLItt OWNERS AT LEAST 72 HOURS FROM M ME START OF ORSMWTM. ]. ALL EYCAVATM FM UNDERGROUND PPE IXSTALLATN MUST COMPLY MM OSHA STANDARDS FOR ME WNSTFUCTM INDUSTRY IN CM PART 1926). & THE CONTRACTOR SHALL VERIFY ME LOCATIONS O ALL BOUNDARIES BUILDINGS WaTATM. AND OVER PERTNFNT SM REMENM CMMACTOR SHALL IMMEDIATELY REPORT MT OOREPAN ORES BETWEEN EXISTING CMOTONS ARM ONHACT DOCUMENTS TO ME OWNER AM ENGINEER. 9. CMMACIOR SHALL SUBMIT FOR THE APPROVAL O THE ORLON SUBMITTALS O NL SPECHED MATERIALS LISTED IN ME PLANS, TO INCLUDE SHOP MAWNGS, MANUFACTURERS SPDMCATMS AND LABORATORY REPORTS. THE OWNER'S APPROVAL O SUBMITTALS Al BE GENERAL AND WILL NOT REUEW ME ORMACTM FROM THE RESPONSIBILITY OFANERENO TO ME CMTMCT AND FOR MY U RM VAT MAY EMT M.CCRMACTF SNAIL SE RESPONSIBLE FM NNEMNG ALLR RIMY PURNITS, IXSPECTONS, ONES AND OVER Rf MD REMS IN AO MM WITH LOCAL MIS STATE POLICY. 1. A PORTION OF CONCENTRATED RUNOFF FLOWING MRU ME SITE SHALL BE ROUTED VA NEW STORM DRAINS INTO ME STORMMCH BMP WHICH WILL RELEASE RUNOFF AT RATES MICH COMPLY MM ME ENERGY BALANCE EQUATION 9VAC25-8]0-66-B(3). 2. WATER ONAOTY MLL BE ADDRESSED BY ME DEDICATION OF 2.78 ACRES LAND INTO A SM FOREST/OPEN SPACE EASEMENT, BY THE USE OF A SMRMTECH ISOLATOR ROW FILTRATION BMP ND MICH PROES 2.22 LB/YR Of,NUTRIENT HEAWENT. AND BY ME PURCHASE OF NUTRIENT CREDITS. AN AMOUNT FOR 6.56 LB/YR PHOSPHOROUS CREDITS SHALL BE PURCHASED TO MEET THE all REDEVELOPMENT NUTRIENT REMOVAL REQUIREMENTS PER 9VAC25-870-65. 3. PER ME IRRM SPREADSHEET, ME SIZE MOST ACHIEVE A TOTAL PHOSPHOROUS REDUCTION OF BJ9 LB/YR. PER ZMA201000012, 25% OF TREATMENT SHALL OCCUR DRIVES.222/BJ9 = 25.3% IS ONEIE. SATISMNC HIS ZMA CONDITION. 4. RMP CWROINAMSU • STCRMHCH BMP: 37.99331T,-78.49591Y 5. BMP DETAILS: HE STORMTECH BMP IS A DETENTION SnMM MAT ALSO PROVOES RUNOFF RLHATON AS A MANUFACTURED TREATMENT OEVCE ME BMP PROVDES 40% TOTAL PHOSPHOROUS REDUCTION, AT A RAZE OF 2.22 LBS/YR. BMP PE MITE AN OFF.F NOTE: RUMIE FRM AN OFFOF IS FILMROFFIS ROWS INTO ME OuSTED F WITH BMP. RESIGN. REDUCTION OF MIS ALCULA BMP IS ACCOUNTED FOR LMM MIS DESIGN. RDER TU ME SM CA2012co N SMELTERS RSSTE BEASEER DETAILS: MOFILTER DESIGNED UNDER WP02012W08]. BICFILTER'S 51M1 EASEMENT LEGPL REFERENCE: OB 4425 PG 325-334 L INSPECT SYSTEM NA INWECRGN PORTS FOR ME ISOLATOR ROW NEAR ME INLET AREAS TWICE PER YEAR, IN ME SUMMER AND IN ME MN E . CLEAN OUT DEBRIS WIN VAC-D`Mfi MARC INSPECTION, C. INSPECT ALL AGREED. INLET MANHOLLS MD OUTLET ANNUALLY. REMEDY MY CLOASS OR FAIWRE& 3. INSPECT GENERAL SYSTEM DEBRIS ACCUMULATION ONCE ENSURE` 2 YEARS. IF DEBRIS OR EMINENT IS NOTICED, CLEM OUT ENTRE SYSTEM MM A VAC -MUCK USING ACCESS RISERS All applicable p li STANDARDS (N51 All standards shot t bi adhered Emaim ontl ing of nl fume of Regulations ontl Minimum inchme. a thole be md to During oil pgases of conaWdion. These include, but are not limited to the following: 1. STABWATION OF DENUDED AREAS, Permanent or temporary soil atobilization whale be applied to bare areas within x n don retorted after final grade Is on any portion of the site. Temporary soil stabilization droll be applied within seYon days to denuded areas that may not be of Mal grade, but will remain tlmmanl or undisturbed for longer than 30 day3. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2.STABILIZAPON OF SOIL STOCKPILES: During covbuction of the project, soil stockpiles aholl be atabilizeb An protected with sedimalt trapping measures. Me applicant is reepmsNle for temporary protection and permanent stabilization of all moil stockpiles on site as well as son intentionally transported from the project site. 3.PMMANENT NEGETA➢VE GONER A permonent vegelalirn caper shall be established an denuded areas not alherwiae permanently stabilized. Permanent vegetation shall not be onaldered established entll a ground crown is ochiere that, in Ue opinion of the county Insiecfa, Is uniform and mature enough to mrshe to Inhibit 4.TMING & STABIUZAPON OF SILT MAPPING MEASURES: Sediment bins and Daps, palmeter dikes, sediment bamem and other Mended to trap madimmt Mall be canetrumed a a first step m �Y land disturbing activity and shall be made functional before upelope land UNInitonew lakes peene, S. STABILIZATION OF EARTHEN STRUCTURES: SlobHlizolion meusures shall be applied to eurMen structures such as dams, dikes and dereiona immediotNy after installotiM, &SEDIMENT MAPS AND BASINS: A setlimmt basin shall control surface runoff from disturbed areas that is areprimed of Dow from drainage areas greater than or equal to three acres. The medlmenf basin shall be designed and constructed too modafe the anticipated sediment loading for the lend disturbing activity c The outfoll device or system device shall fake into account the total drainage area flowing through the disturbed are, to be sewed by the basin. TCUT AND FILL SLOPES: CUT and RU sl0?ea throe be tleaigned and crostmdetl In er but am m Slope$ that am found to be probing a emy within one r of permanent stabilization Moll be provided withadditional dope stabilizing measures until the problem Is confuted, B.CONOMMATEO RUN-CTT DOMN MIT ON FlLL SLOPES: ConemDated runoff shall not now down cut or MI Morgan unions Contained w¢hn an adequate temporary or pammml channel. flame, or I.E.¢drmn famous.. 9. WATER SEEPS FROM A YWE FACE: Whenever water xepa from o dope face, adequate drainage or other protection shall be crowded. MSTCRM BANNER INLET PROTECTION: All storm sewer inlets that ore made operable during construction shall be protected so that sediment-latlm water cannot ruler the coentanGo their without first being fl0ered or oMerwier treated to remove eBdimmt. H.STABILIZATON OF OUTLETS: Before newly constructed stomwater conveyance channels or. matle operational, aRequate outlet protection and any required temporary o pemanenf channel Ilning shill be Installed in both the conveyance paten and receiving channel. 12 Would IN LINE WATERCOURSES: Men work In o Two watercourse Is performed. pmcautlens shall be on to minimize enoacchnwzi carried sediment transport and stabilize thetakwaA to the greatest extern! mem ible passible during construction. N mm olaml Appall be mod! Am the can#mctor, of couaeway$ tad Covprd arri Earthen MI may be used for these structures II arnored by nonerodlble cover material. 13.CWSSING A UW WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, o temporary stream crossing compacted of nonemdible mate la shall be provided. 14.APPLICABLE REGULATIONS: All applicable fedral, eelate and local regulations pertaining to waking in or crossing If" watercourses shall be met. 15.STABILIZATION OF BED AND BANKS The bed and banks of a Wctercoune shell be stabilized immediately after work in the watercourse is completed. 16.0NOERGRORND UTILITIES: Underground utilities shall be Installed in accordance with the following standards in addition to other criteria rose more than 500 linear feet of trench may be opined of one time. b.Excavated maLnm shall be placed on the uphill side of trenches u EMuent fa dewafering aperatims shall be fnfemd or passed through approved xdimenl trapping device, or both, and discharged in a manner that does not odvenely affect flowing streams a efforts property. Metal used fa backmeng trenches shall be Properly compacted In order to minimize erasion and promote mtaboization. e.Rxbbieizalion shall be accomplished in xcwdance with Veae regUlallona. I. Applicable safety regular are shall be complied with. 17.CONSIRUCTCN ACCESS ROUTES: Wnem can abortion world¢ access routem intersect paved public mods. In proAw ion¢ shall be made to minimize the trarial at eedmm it by variable tracking rota aboard surfaces. More ore eetlimml is transported an t0 a public road xMwo aURa, the road shall be cleaned ughly of the end of each All Sediment shall be removed by shovding a sweeping and transported to a sediment control diwoeal are Street eaMing exalt be allowed only after aetliorent He owed In this amonesper, This provision shall apply to Individual Iota sub well x to lihi land dimem ing activttiea. 18.TEMPORARY E&S CONTROL MEASURE REMOVAL: All temporary erosion and sediment Control prommures shall be normysind within By data after final site ebbilization or after temporary mmr s ore o longer needed, unless otherwise authorized by the local progr m authority Trapped vediment and One disturbed moil cream boulting from the disposition of temporary measures shall be permanently stabilized to prevml Number ¢savoy and setlimmt. M,ADEOUACT OF RECEINNG CHANNELS: Properties ontl -persons dBee atom Rom the demicipmanl site shall be protected from sediment reposition, pressing ontl damage, due to inAs In source, veloclty and peak flow ratesof stormwater runoff for the slated Requency storm of 24 hour duration. SHIMP NsIN RIN 3g ausomsauvA'� ama9NwvaNxAN-1. ED VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 ESC NARRATIVE C9 PHASE 7A PHASE 1A 1. INSTALL CONSTRUCTION ENTRANCE OFF RE 20. 2. INSTALL SEDIMENT TRAPS 1 & 2 AND PERIMETER CONTROLS. 3. PREPARE SITE FOR STREAM PUMP AROUND OPERATION. 4. CONTACT COUNTY INSPECTOR FOR INSPECTIONS. 5. WHEN FIELD CONDITIONS ARE APPROVED, COMPLETE CULVERTS A & B INSTALLATION QUICKLY USING PUMP -AROUND. PHASE 18 6. AFTER CULVERTS A & B, PERIMETER CONTROLS, AND TRAPS ARE INSTALLED, CONSTRUCT ROAD A WE MINIMAL GRADING AS SHOWN ON PHASE 1B PLAN. 7. WHEN ROAD A IS COMPLIED AND HAS HRST COURSE OF ASPHALT POURED, REMOVE EX. ROAD 6. CONTACT DESIGN ENGINEER AND ALBEMARLE COUNTY INSPECTOR BEFORE REMOVING TRAP I. 9. MAINTAIN PERIMETER CONTROLS & TRAP 2 DURING TRANI INTO PHASE 2. 50 0 50 100 I50 Scale'. C-50' =-- ----- - --------- 1 SOIL EROSION BE SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION CPS z —z —x —z — 3.05 SILT FENCE SF ® 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSIONS D W [DRAWN TO SCALE] 3,13 TEMPORARY SEDIMENT TRAP SO 3.16 OUTLET PROTECTION 3.31 TEMPORARY SEEDING 0 v---�^`J— 3.32 PERMANENT SEEDING PS 3.35 MULCH 3.39 DUST CONTROL ------- PUMP —AROUND DIVERSION TREE PROTECTION FENCING ' . ' . ' — LIMITS OF DISTURBANCE — — — — — — — TRAP DRAINAGE AREA ryM1 /,i% -- ..N — `- i IF I ^ ` / �i SHIMP 'I ViAlli /NciNNs�t _ MANAGEMENT PHASE 7B V' 50 0 50 100 150 scale: 50, LEGEND LEGEND ��� SOIL TYPE BOUNDARY RUNOFF FLOW DIRECTION 0 U Mp 9 Lic. 4_"5I�183 p0 10�1'aL(oei pBB BKRU1 VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 ESC PHASE 1 C10 SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTON ROAD STABHUZATON O —z —x —x —z — 3.05 SILT FENCE SF ® 3.07 INLET PROTECTON IP 3.09 TEMPORARY DIVERSIONS ®®D [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST age 3.18 OUTLET PROTECTION OP G 3.31 TEMPORARY SEEDING 3.32 PERMANENT SEEDING 3.35 MULCH G� 3.39 DUST CONTROL —0 0 SAFETY FENCE 0 O TREE PROTECTION FENCING ..... — LIMITS OF DISTURBANCE — — — — — — — TRAP DRAINAGE AREA ------------------ r -------------- ---- = 1. ROAD A WILL HAVE BEEN INSTALLED AT THIS TIME. MOVE CONSTRUCTION ENTRANCE AS SHOWN. 2. MAINTAIN MAP 2 & INSTALL NEW PERIMETER CONTROLS SHOWN HERE. 3. INSTALL STORM SEWER SYSTEM E AS SHOWN ON THIS SHEET. USE CONSTRUCTION ROAD STABILIZATION AS NEEDED TO MINIMIZE EROSION AS SEWER IS INSTALLED. DO NOT INSTALL STORM SYSTEM E CURB INLETS IN THIS PHASE - LEAVF AS RISERS ONLY. CAP OPENINGS. 4. CONTACT DESIGN ENGINEER AND COUNTY INSPECTOR BEFORE PROCEEDING TO NEXT PHASE. ?"\ � IAOTECTIOx 150.5 Y / R DA; \ `, AC EACI, , �� �-scoffs_.• ,. ,r*' I I k - Tnz 1r ijf}I.I1T,Y i -------------------- _ -----�-------- nEXCAVATED TRENCH DETAIL C11 Not ID scex ;E SHIMP ENINRINGbi IX Lk. .45183 err VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)NNO9.21 2) XNA0.13 FILE NO. 18.025 ESC PHASE 2 C11 SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABNZATION O —x —x —x — 3.05 SILT FENCE SF ® 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSIONS ®(@(F DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP SO 3.18 OUTLET PROTECTION OP G� 3.31 TEMPORARY SEEDING 3.32 PERMANENT SEEDING 2l. T •s MI 11 rw 1. ROAD A WILL HAVE BEEN INSTALLED AT THIS TIME. 2, STORM SEWER SYSTEM E WILL HAVE BEEN INSTALLED AT THIS TIME. 3. INSTALL ADDITIONAL CONSTRUCTION ENTRANCES, SEDIMENT BASIN, & PERIMETER CONTROLS AS SHOWN ON THIS SHEET. REFERENCE SHEET C16 FOR BASIN DETAILS. 4. CONTACT ALBEMARLE COUNTY INSPECTOR FOR INSPECTIONS. 5, WHEN MEASURES ARE APPROVED, BEGIN MASS GRADING AND WATER/SEWER INSTALLATION. 6. CONSTRUCT ROADS B, C. & D. AS ROADS ARE BROUGHT TO GRADE, INSTALL CURB INLETS WTH INLET PROTECTION. 7. CONTACT DESIGN ENGINEER BEFORE PROCEEDING TO NEXT PHASE. 8. MAINTAIN PERIMETER CONTROLS & STABILIZATION AS NEEDED. o,wm�rmuva� +c'neswva�r�urcwu VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)NNO9.21 2)ADO.10.13 FILE NO. 18.025 ESC PHASE 3 C12 SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY 3.02 CONSTRUCAGN ENTRANCE CE 3.03 CONSTRUCTON ROAD STABIUZAEON O z —x —x —x — 3.05 SILT FENCE SF ® 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSIONS @( [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP SO age 3.18 OUTLET PROTECTION OP Ge 3.31 TEMPORARY SEEDING 3.32 PERMANENT SEEDING 3.35 MULCH G� �I1'�� 3.39 DUST CONTROL 1. ROAD A, B, C, & D WILL HAVE BEEN INSTALLED AT THIS TIME. 2, UTUTIES MLL HAVE BEEN INSTALLED AT THIS TIME. 3, WHEN ALL UPSTREAM AREAS ARE STABILIZED, CONTACT ALBEMARLE COUNTY INSPECTOR FOR INSPECTIONS. 4, WHEN GENERAL SIZE STABIMZATON IS APPROWD, DEWAIER SEDIMENT BASIN AND HACKETT TO COMPLETE MASS GRADING NEAR ROAD E. PROTECT AREA MTH SILT FENCE. 5. CONSTRUCT ROAD E, FIRE ACCESS ROAD, & EMIR 1. 6. PROTECT DISTURBED AREAS WITH SILT FENCE. 7. MAINTAIN PERIMETER CONTROLS & STABIUZATION UNTIL ENTIRE SITE IS STABILIZED. 8. WHEN SITE IS STABILIZED, BEGIN MITIGATION PLANTINGS SHOWN ON SHEET C17. wem�rmuva� +e�neswarvr�uxnwu VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)N20.09.21 2) XNA0.13 FILE NO. 18.025 ESC PHASE 4 C13 CONSTRUCTION OF A SILT FENCE (WITH WIRE SUPPORT) " R. WANE .I. haval a To ma ret5. re frand To OR VAR rtxcE .Vat EXTEND IT I TIE Deal IIII i III 0. FMflwlrD Sttme/CT M radial nL mE� OF. mot 1nE QC14 SILT FENCE (SF) W. WIRE SUPPORT Not so saw Sediment Trap Design Data — CIA IMmI Cry Do XI Top. an A B C HUTH EIR) IBgN ) Aq Vd. �) C/At) U9. R) 0) (Re9) Dow) .T10 si .TRO 30 10 68 "�O) N1 RRe 20 al 11. .ag0 dTeO d]60 30 20 25 135 E05 .3. 20 .10 1531 m�mlIs thin Asks CROSS SECTION OF OUTLET oat l�drd1. za.` \ - �{Ixxc) f Y d� EA f-COARSE AOOREOAiE SKALL¢k��357 OR 15 OUTLET (PERSPECTIVE VIEW) QDRPORARY SEDIMENT TRAP (ST) C14 Not m stale GRAVEL CURB INLET SEDIMENT FILTER f GRAVEL FILTER RUNOFF WATE WIRE MESH FILTERED WATER _ s SEDIMENT j CONCRETE GUTTER I2 R\\ `CURB INLET SPECVIC APPLICATION Dod M6yN00 OF VILR PWIECTION IS APPW.. AT G. .. PONDD.'G IN FROM OT THE SrRVC1VR8 IS NOT TWEET TO CAV56 VI..N.. OR DAWGE TO AOIACENT 3BVCfVR69 AND Col.. ANDAS. • GRAVRL 9XALL BR VDM MS. /95T OR 5 WA1156 ACGRROATR. B INLET PROTECTION IP e14 Nat Is, sew UP nor daammma`My e TYPICAL CLEANWATER DIVERSION rc-¢ No m mvi UP a. as rat nw.m\-f�-"�\ VEE-SHAPED DIVERSION BETWEEN F1 & E6Z TEMPORARY DIVERSION (DV) AND CLEAN WATER DIVERSION (CWD) c11 NOT To scale 1992 3J5 Scum: VC Disom TABLE 3JS1 ORGANIC MIII.CN MAlERWS AND APPLICATION PA'184 RAIPS: MUTAffg. NHS' Per Atrc Per l000 p.ft \Yrx n. Flay 11 .2 tom m.g10g Free team weetli avd tva�ae (Mlvimum2 mailer. Mud be mmhaed va 0 MULCHING MU c14 Not To sew TABLE 3.3E.A ADHESIVES USED FOR DUST CONTROL Water Application EDI.Liflas Adhesive (Adhesil Wwr) No�Tzle GodlollslAcre Anionic Asp�t Emulsion 01 C. Spmy 1,200 Latex Emulsion 125A Fire Spray 235 Radio in Wale, 4:1 Fine Spray 300 Acrylic Emulsion (Non-Tsaffic) 7:1 Cows Spiny 450 AcrylicE Wsion (Trelfic) 3.5:1 Coarse Spray 350 @s1DUST CONTROL (DC) C14 Not n soWle hei an as wassawas '-sat. nswassaw-sena's we wasswasse,vs XgmN• mina• sal rdna. �.� ee�xxw�m.a4w�aax TEMPORARY SEEDING (TS) C14 Not To sore TEMPORARY DIVERSION DIKE Compacted Soil 18' •—Flow ....:::.4.5 Gain........ (@DIVERSION DIKE (DD) C14 Na Po dew SIOxE �JG 41N COHSTRVCiION AC[E55 3 5 }A 0.5PHAL1 lOv CO PSE EXISTING �e' MN. 21A AGGRE4ATE EASEM:N. 21A AGGREWTE EASE 1 PROFILE sTOXE JO' Ma CONSTeucnGN ^ ASPILLLT PAYED AGSEss Ir(J wASXX.YX %"". 2x 2x P-e.— I2x 11 xIN• — 'MV51 E%rENO NLL WID1X L� I`PoSITNE ORNNACE OF INGRESS sND EGRESS 1p�pgYENi BPERAnoN xc oEmcE PLAN �12' MIN. OsnlvE DRaxAGE ar 2% TGXXPI IG Carl NCE nESR cmnl�' .' SECTION A -A Auuramuu xxtc by Otl wch unisV 4eivstalled xitllrmbtiunmllroa ba0cock wdoHTahe dNPMod a wa¢L hoaexah a diameter of l.c Wthu for atlMllate ov eDsusme. W'ashxsveue betmrAl seduYBommealba0cetoml aDDsoeed Garr¢area tommweeaeAOlmt. .as aedhnmtrhas be Dmn'alted fimu totem; Norm rheas, tlittha m' xateromsn. PAVED WASH RACK NO SCALE PERMANENT SEEDING SPECIFICATIONS February 18 through April 30: Kentucky 31 F,—. - 128 Ibe/ocrm Red Tap Grace - 2 Ibe/.c, Annual Rye - 20 Its/dare. May I through August 15. Kentucky 31 Fescue - 128 Ibe/acrq Red Tap Grads - 2 Ibs/acre, FOxtul Millet - 20 Ibs/dare. August 18 through October 31: Kentucky 31 Fedme - 128 Ibs/dine: Red Top Grad - 2 Ibs/ore: Annual Rye - 20 lee/acre. November 1 through February Is Kentucky 31 Fescue - 128 Ibs/acre: Red Top Grass - 2 Ibe/acre: Winter Rm - 20 m¢/ane. MULCHING SPECIFICATCNS: Straw or hay at a rate of 2 tons/acre. Must be anchored Spread with much blower or by hand. Use AND FERBHZER SPECIFICATIONS: Ume and krttlher needs should be determined by ¢ail testa Soil tests may be ry at oved Sly, the Coo,er.U. Extension Service Sol Testing by a rep"Hible commercial laboratory Information concerning the State Sol Feeling Labomtory M available from CITY Extension Agents, Under unusual condition where it is not pa¢¢Lle to obtain a wil test the fawwi soil amendments will be applied: For Permanent seeding: Seeded as Mmml be limed m o rote of 2 tons per acre. and fertilized at a rate of LOGO Ibs, per acre of 10-20-m b0 Ibs. per 1,000 aware feat) m equivalent. For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons per acre. and fertilized at a rate of SOO as. per acre of 10-20-10 (10 Ibd. Per 1,000 square feel) o equivalent. LOW MAINTENANCE GROUND COVER: SOUTHEAST NATIVE GRASS SEED MIX (AMERICAN MEADOWS INC) For slopes shaper than 3:1 grad4, Ma the following seeds at 30 lbs/sae each, Icing with EC-2 Matting: ,,in in WhLye (Ey ous Wgmicas). Little Olaestem Grass (Schizamgiam one oriu n).G asspl( w nnrsdeum flows). Broomall (Andropogon Nrgincos). 10 PERMANENT SEEDING (PS) C14 Nth To saw SHIMP 1<NsINI<I<RIN 3g aAaumsdlava'� aemawas—xulmccv 0 0 O MP 9 Lic. 4_5I183 p0 10(l�klLDd�' pee 8t•"t . aKRU1 VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)20M.09.21 2)20N.10.13 FILE NO. 18.025 ESC DETAILS C14 GRAVEL AND WIRE MESH DROP INLET SEDIMENT FILTER µgPtNJ • GRAVEL SHALL BE VDOT is. #357 OR N5 COARSE AGGREGATE. rl1DROP INLET PROTECTION (DIP) C15 Not To &Mo PIPE TEMPORARY FILL DIVERSION EARTHEN RIDGE FILL SLOPE 12" DEPTH. ADD EC-3 MATTING FOR PERMANENT N CONVERSION, III III III � j 22�FILL DIVERSION (FD) C15 Net To &de CONDITIONS W � e SEE MUT To RAT u Wm ND unxm RPINR L o —� I _L a T SECTOR A-n - rtiu Lam 1pm A mom. outlet m bet m er T moT 010 (cis) La (11) Do (t) 3Do (R) d5B (in) depth (In) Outlet Condition At/ED 361 33.5 5.00 15.OD 12.0 18.0 Channel E1 97 27.0 3.00 9.00 9.0 14.0 Channel D1 6 8.0 1.25 3.]5 6.0 9.0 Channel BASIN OUTLET 36 21.0 2.00 6.00 8.0 12.0 Channel MEN MEN MEN All Firm BASIN OUTLET Al. B1, & Di OUTLETS %s10UTLET PROTECTION TABLE (OP) DETAILS C15 Not To Spate SEQUENCE OF CONSTRUCTION 1. PREPARE DIVERSION 1 WITH PUMP HOSE FEE MANUFACTURER SPECS. HOSE SMALL BE SECURED USING SANDBAGS OR EQUIVALENT DIVERSION 1 HOSE SHALL OUTLET INTO E%. RIPRAP OUTLET PROTECTION. ENSURE CONDUIT IS PLACED IN Fnc- A SUCH THAT NO EROSION OCCURS. 2. TEST PUMP B TUBING TO ENSURE FUNCTONSAUTY. 3. PLACE FILTER FABRIC IN STREAM BED AND PLACE S4NCRAG COFFER DAM ON FILTER FABRIC UP TO THE LEVEL OF THE TOP OF STREAM BANKS. 4. MONITOR PUMP I DURING CONSTRUCTION TO ENSURE STREAM DIVERSION IS SUCCESSFUL. 5. WHEN DIVERSION I HAS BEEN COMPLETED, INSTALL DIVERSION 2 SANDBAGS IN SAME FASHION. CONTRACTOR MAY USE OPTIONAL PUMP 2AND DIVERSION HOSE TO PUMP SEDIMENT UNDER WATER FROM DIVERSION 21NTO SILT SACK IF WATER BUILDS UP IN CULVERT INSTALLATION WJRKAREA 6 AFTER CULVERT HAS BEEN INSTALLED, REMOVE DIVERSIONS. HOSE PEE SAND PUMPfl BAGSIN BFD /r DISCHARGE TO ELEVATION I HOSE OF BANK. NITER FABRIC UNDER SAND BAGS SECTION VIEW The Virginia Stream Restoration & Stabilization Best Management Practices Guide DETAIL 5.1: PUMP -AROUND PRACTICE 6en1erinD 0.0k. IVA E&S Standard ma Spec 3,26 Wuasin Pump or dri/satlimeet beg' gwaarmvm Mother, Hope P ft. De too PoN 4l Mou P las neMMl , I Ft. Flo, Wpru bm Sandbag/Slone Berrer Work Aro Sumpsale DlstMrge Punp L.Pth Not To paed Or Pool Inlp Vtlorit, T11 VFtM1 Can Be II" Nm Oep11 0iasipaler 0.,W1ed In 0M Day ] Ain Onmetu PLAN �waw•. SM1eenn6 Bxe IT " • I Fool Work Area R F.1 IMimu.I Crns Sepflum Dt S-dVag/Slpne Diversion SECTION A -A ** Coneslmtlo GoI.H., m�AlaCTlMI YUNim Mpener eW6 .IS. mome. w commeompo eemGMe PLAN VIEW %PUMP —AROUND DIVERSION DETAIL C15 Not I. score Chen Section Cfairel BSdn Tep 1 e I— CN M C lMmtl Brirg Ixgnm Wum(en— 0 Can Depmm ` A., MVI E1 CNN Riprp owv — ] 15 p&m Ip0 tmlk 21 NW Iede ME S. B.B FUNCE CORRECT METHODS OF TREE FENCING CORRECT TRUNK ARMORING TRIANGULAR BOARD FENCE Cc �s1TREE PROTECTION FENCING C15 Nm m &Me TYPICAL GRAVEL STRUCTURE %�RIMOF—WAY DIVERSION (RWD) C15 Not &a1e SHIMP NsIN RIN 3g m-amemauvp u'm re aM=eo —1. 0 O U MP 9 Lic. 4_"5I�183 p0 10(1'at(sei pBB 9�AL VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)AN.09.21 2)2020.10.13 FILE NO. 18.025 ESC DETAILS C15 ---DRAINAGE'%�RFA� '� I / - SLOPES SLOPES / /------- n 1 0 >t : / 21.0 6.0 OPEN f o — l / l OIL 1 1 1 1 / �I a�Ta'OR J / i ah � J 6 i I TP cu \` 11 NRSSURE REON L ° ° M AEX—RfIEnLOWnLS) TOPSu—.LNDLE WELDED O To FOR AND CRIEM,ED KR- 0 PLNDICULAR To COAIUOnnaNE. ° TOP OAI WAR WEB O O METAL OR /B STEEL PLATE. 0 PRESURE n[IIEP TRO ES MAY S OMMRIED. IF ENDS OF FOLLYP AN VIEW OPEN WEN TIERTOPL5 , LSH.J TACRADO NE D CYUMDEA IE—GAGE TON Wl[ FROM Au AWUxD %• WI PIPE OR FABRICATED pia I.E. TES MIN. ' MUST FIRMLY iiSTENED TOP OF THE NIGER. IN M 1]' UPFC. RAN EDGE 2. SUPPORT BAR ARE WELDED (TmE`NNUINR (BD NFEAR ANTO OR NED BY SITANK BOLTED TO TOP OF SAID. SECTION A —A ISOMETRIC ANTI —VORTEX TRASH RACK / 31TRASH RACK DETAIL "C1!V Not To scale %i1SEDIMENT BASIN PLAN 20 o zo 40 60 16 .=,Ul soalo: 1 -20' RECOMMENDED DEWATERINC SYSTEM FOR SEDIMENT BASINS KITT. CAP PDED L.�,HaEHE. AS FR ja�SD(sE CF OLLATT. IN �O ! �WDRLTEa W�WD_= D>uPGNG t A RT FORLANTTn METAL AREA APPENDIX 3 4-A) NOTE: WITH CONCRETE RISER, USE PVC SCHEDULE 40 STUB FOR DEWATERINO ORIFICE *DRAINAGE TUBING SHALL COMPLY WITH ASTM F667 AND AASHIO M294 4)DEWATERING TUBE DETAIL Not TO Scale HIGH WATER MOM EL£V.) MIN. , 0' RIM- 475.0 G: WET TOP 67 c.r/ Ac. 'WEY' SEORAGE B,: 8' OEWA,ERING DEVICE. INV. 473A CMP RISER W. CONC. BASE r5`\ RISER BASE DETAIL C16 Not TO Seale A: BOTTOM — DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) vv,MWI WWVW M DWVW. W, FIAT [Pr . VML Men.l 0'RSW MwA Y9E a4 S0 n SEDIMENT BASIN DESIGN TABLE C16 Not To scale EXAMPLE PLAN VIEWS OF BAFFLE LOCATIONS IN SEDIMENT BASINS I , T L AM ARI n BAFFLE DETAIL C16 Not To Scale SHIM,AND PLANNING H—EUT P NsIN RIN 3g OLwOUrmUFA,— .—H.H..—I.E.xGcal, 0 0 U MP 9 Lic. .4_"5I�183 pp 10�1'at(Bei pBB WEAL VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) XNA0.13 FILE NO. 18.025 SEDIMENT BASIN DETAILS C16 f + /A, \ \] IS �500" �+ /T� + + ++ + +e A\V ee \V \�� �1?III IIr�III �� + + + +�`t\ p+ + �IA7AA\V A�1 �l so W / �� A z% al V A� `V A 11nl.ul.lu.nl.ul + + + + + _Ne— / +'1'�y1�•F``+ .A. \\� \ + + + + II + '+ II.III.III� 1 \ PP + + + + + +i/ + F.III. s + + + + \ \ \ \ \ + �\ + + +III.\\E#1-U-- 4 + - _ 1\_�' + + + + + \\�+\ 1 \a ;' �\ \ \ - - i/ I � - - - \ _I 1 \ \ \ \ 1 l \ _ OHU — HU \P■ �\ era v hl �R10 �� + -�, �-b' � / + + + + + + + + +— + J-- o � ^ A \ \� a Hu'� oHui oHu \I SH i �$ 4'0'"60" 1 f /'y + — + — _ + — ONU— OHL�\— CHU— OHS -- OHV % \ ` >z \ F\V \ �,I \ LUADRANNING PROJECT e.m ...psi. + + \ + s \ OHU— OHU—CHU— L \ / �_ — \,1 I `\ \` ..%11 , .A� an'I.@a.M.—.Eunacca IR— OHO —OHO —OHU— ---- — \ � 1\\ \ �o \ sx ` I " CHU—oHu—-----I---j + + _Eao 1 -- ---- — UP. �45183 - s 1= I= 1 s 1 p@BB'YM.Ab ------ _ — — — m — — — — — — — — — — — -- __— ---\ \ // -----,],----------------- — —------------ ________—___ \ \ \ I \ MITIGATION PLANTING LIST 0 mmaeal loaccumn It0 %i-�PLANTING PATTERN: C17 sade: l._e. Planting Type Botanical Nome Common Name Quantity Large Shade Tree Oueras Wonr Smamp Mite Ook 200 Large Shade nee Olercus phdlas Muse aok zoo Lmge Shade Tree Ater him. Red Male 200 Large Shade Tree DOME nigo Rrerbimh 200 Medium Shade Tree AmNmdlier Mee% Smooth Sarkabeny 200 MMum Shade T. Commas ardiniana American Hambam 200 Medium SAale To. Cfilone lhus Mrgniae Frogetree 200 deal Sbade Tree Prunue angustifdio ONEGENox Plum 200 Saudi Shade nee Vlbumum aWnddes Mthe Rod 200 BULK PURCHASE TOTAL 1800 BUFFER AREA 05NRBED 15.800 SF = 1.05 ACRES DISTURBED WITHIN 1W' BUFFER MITIGATION PLANTING CALCULATION5: .1.05 AC AREA DISTURBED WITHIN STREAM BUFFER .2.10 AC REQUIRED 2:1 RATIO REPLANTING AREA (2.1.05=2.10 AC) .1.44 AC AVAILABLE BUFFER REPLANTING AREA (NOTE: AREA NOT SHOWN WITH A HATCH IS TOO DENSELY WOODED FOR REPLANTING AND IS OMITTED) MITIGATION SWITCH RFOUIRFMFNTS: BEEDLING PLANTING FROM OCR RIPARIAN BUFFERS GUIDANCE MANUAL P.95 OPTION C. TABLE B: 'LINT 1210 BARE ROOT SEEDLINGS/ACRE OF AVAILABLE REPLANTING AREA AT WAS' ON CENTER. GIANT 1750 SEEDLINGS IN 1.44 AC REPLANTING AREA. MITIGATION STRATEGY' 'LINT 121011.44— 1750 BARE ROOT SEEDLINGS IN THE MIEGATON REPLANTING AREA. SEEDLINGS ,AN BE PURCHASED IN BULK FROM THE VA. DEPT. OF FORESTRY. (ESTIMATED $140/200 SEEDLINGS) ifFlll I 1 PI BARE ROOT SEED IN<: 'LENT FT O BARE ROOT SEEDLINGS AT RE S LE CENTER. MITIGATION SPECIES LOCATED IN DST ON THE LEFT OF THESE NOTES. SPECIES WERE SELECTED FROM AAFTER CO COUNTY APPROVED GLINTING LIST. CONTRACTOR CAN SUBSTITUTE E SPECIES ONLY AFTER CONSULTING AN COMPLETE ST CONTRACTOR SHALL BEGIN PLANTING AFTER HOUSE CRK T FINISHED AND SHALL COMPLETE 'LANTNGS 'TO B 6 MONTHS OF THE FIRST HOUSE HE SNUCIION. SEEDLINGS SHALL BE PLANTED ACCORDING TO BEST PRACTICES AS SPECIFIED BY THE USDA. MAINTFNANCF INSTRUCTONS: DEVELOPER SHALL ENTER INTO A 5—YEAR MAINTENANCE AND 'ERFORMANCE GARUNTEE. WHICH SHALL STIPULATE A MINIMUM SURVVAL OF bW PLANTS PER ACRE WEER TWO (2) GROWING SEASONS. REQUIRED SURVIVAL FOR THIS PROJECT: 60x1.44-864 PLANTS. 20 0 20 40 6o Scale: 1-20' LEGEND 100' BUFFER DISEURMCE MITIGATION REPLANTING (INSIDE BUfTER) TREE PROTECTION FENCING �\ STREAM BUFFER PROPERTY/LOT LINE VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 MITIGATION PLAN C17 .mw,BF CwB<cTiw uc Yxc,YY MJFlilld I I ,rrca ama ssc TrTTTT71 - T aeaawa-.B+« °'•°_ �3 a wx t94' :8. rvx —Is4 ��^^ •:•' '•'®`"" • oi.mx1r v mW.A .iBrxl Y«wniw� �� SCIYM MB ,nem _ C. rn /,e Y_iIYA GF iPV.T1EXr x xiGP N£iS x'W C .. gyT. m. s .-°a. d;,�,�,..m. M � ■RrNaxa,r•- YNFRIRMBThDxYUTx< s`.xc;a a■s:,�N°�acav - B� YE,MW Of iIEA,YEXix YWp1E4 FLEVBrIW .cwsowam., ..,o.oa.n,mn...m. rypB,L gpytti lM .a,v.vnvwvnwviw p�1=n . m,e_®mower •B'mc STANDARD METHOD OF SHMNG FLARED END SECTION �;,,,_, �i� TYPICAL CONCRETE SAFETY SLOB FOR DROP INLETS, STANDARD COMBINATION UNDERDRAN MANHOLE M INLET NVERTS ® ¢ e�cuxw.,m x< acVFnrs «m -- m MANHOLES MD JUNCTNN BO%EB m va w...LOWER END U E ., _ �.,- —. dm-.mmm.. ommm©oo ■�mmo■s ommm©©o ammmmm© ommm©©o ommm© ammmc ommmc ommm©oo ommme ommm©®© ommm■aoo ommmc ommm¢ o©mm®mo om®ommmc ommors ommmc moo©©o© ® STANDARD ENDWALL FOR RPE CULVERTS m u•-.. .wnx v.w .�•xwru. x<s j.'lUR-R OUT ET ,.®..„..,,m ..,..,.,., STMIDARD ENDWALL FOR PIPE UNDERDRNN BW M E .1. „ STANDARD CURB DROP INLEB�rt T Lu i� rLmcxr „ ORX...m pz .. �.,,. ....d �... xwwd.TEW._....w..... R�.. '&.M•my ;:,„.-m"°,:9'J�ibv°�°0.5RSii FLWEENT Bxrz .nwBrrx a..x ' �a a l=— �—SiTMDMD COMBINATION UNDERMAN ■ 3 COWERETE OR ®® .. �o 0 OLE II I i If I i V+it 1 _ 1 . m..ama�,�.�.. ®....�A .... g.�. ■�. E.E.I.E.E.. ur�.�E���rr .. mL�cca■■ss �s SHIMP EN IN RIN 3g OR— S.45183 VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2)2020.10.13 FILE NO. 18.025 SWM DETAILS C18 ao IO+OO T➢+50 c%t1SSTTORRMTEsHNBMP PROFILE OAR Now a qOW 9 xq`b' 2 ROW 6 NOW 5 qOW 6 IiI]y_y pnw f fSPARAMP Rnwl rLOSCARNS MEN VER A. ( � rINV. N-TRAP2 M E GRADE (NO0 (CONERSHNONISSURN FMETCS BOB] ILTER FROPUBC 03.60ED.Re \\ (�//J�BU�� Him OUT \`u T__ �/�L_V=�I-\r lL 1 4' FABRIC SipryE DO...M I'IOEAL STONE BENDING DEPTIRER a 551 oVERLPP O PRONCE 3 UNLESS MANUFACN ETW¢N il QH IND marnA RAIX PPROVES SOIL BEARING CAPACITY. CRAMBERs 6' SCN. 40 PEAF PVC NDLF INCOMING R4' PIPES BRFNfH F%fdVd DNcfRORAIN INVR4]5.00. 0 ROWS PA.6.B NOT 5ROWN. - 1W.INYERTIN-1]a91 BFaRlxf. f. %a1STORMTECH BMP SECTION cza 6A8:,=16 STR. E6Z FOR REFERENCE (84" MANHOIE) r- rr- - - 1 .- HOPE, 'I 4' O' -PRECAST CONCRETEWEIR TOP=480.90 6" BMP 1 KN2.1 "%26" ORIFICE V. 477.90 IN PROMDE REINFORCED WATERTIGHT CONNECTION TO SM. E6Z (JY MH-1J 42" HERE FROM HMP ROW 2 BEFORE WEIR NV. IN 477.30 TAIR 2 AIR I STAIR 3 PRECAST 4" CONCRETE W TOP=46O.9D HT RA DE INSPECnON C/D ADS C£MiNTIETCS W17 THAT ETCH E am 11 STONE IW-ol MUSE-99 T T O nE5 (RCry 2. J. <) 50" <i' (16¢) M IF., CHPM IF'47 NV OUP 0UTn]r.oD lrvv w]p MO-45 WITH V=4I .00 tIN 0 STORM OLATOR CH OW TYP. (RO Za9' L NV IN=q T LESO 593 MOST IN., 6' SCH s0 PERr PVC UNDERORgN M1'I STONE [AAI Y FABRIC S1C C_RF]Sno INV=4JSOO. INCLUDE PRINT RE IN 6- EIES PER UNOERDRA O 00-M BEARwc GPgan MPx 1Rrr ETCNE BOTTOM 75 Ol£rQAP ro OE RENEWED BEE sECnpl NEW. SO LF TO:TAL. a95 490 .5 on 4]5 4]0 490 2 m .a 24" HOPE FROM on u. NV. IN 471.00 485 30" HDPE M on BWASS MAN FOLD NV. OUT 478.92 MH-1 an FRAME 480 & COVER OR r S 475 am S8'- SEE. F1 BASE 30" OR is._ INV-4J5.50 TOII INV. Rd (60" MANHOLE) 4]0 %z�INLET PROFILE & DETAIL PR ap SONS VBRr 1 =10 ROM 1 40— 11+00 G B DOM SI �1 4 Rio ISOME71CC MEW Mal AN I I I e I III � ga Q I I - OUTLET PROFILE C2o scua: vein 1 =�9 x0R¢. 1^xR T 1 / I 160. - J0- r61STORMTECH BMP OUTLET DETAIL LOL NIFUN. L)EINILf C20 dale: 1 —, C2o:1 + COI OFALI EMARLE nelwmnaDfeammun ry Ixre gnma Construction Record Drawings (As built) for VSMP TONS fDl)Dwing Is a flat of iDfo.fi. Legalred oa Canawelton record dnwaga far amrnlWamr facMlOes Def ncn Ril Pmreemis Ordinance 17422) /r u preferable dowA consion lanl record drawing AS prepared by someone olherlhan file designer. Pfease do as proaxde design drawings maanMer record drawings. 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DRAWING Cb ­i MEN ME NE ON 11141 BMP 1: ADS STORMTECH IN • AG W • • ••MENOME CHAMBERTOP • • ai ••• it O _ 11 ��_NN ■IIF'• I,�w p �'I MENONOM��� N NNNN �— ON�\►-A I „I N NO NO NO OWES ■■ MENEMENEENEW r• • 9•�C•�— Ili � r� \\ 1031 _ ®MLi��Lp, ��,W�Fa M�.CM1tiVI9Y I ME PER;FP�F6 TED PVC DERDRfAIN. INSTALL 5' I\L TOWNHOM FFE=486. 11 2 OF 6 SHIMLAND PLANNING PROTECT P ENINRINGbi Muwnmmu11SPAS GwUNN vaxaxulrla VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) AU0.10.13 FILE NO. 18.025 BMP DETAILS C20 rnwcI nrGmmAlluN ERR SUeA5G41�.i. Q.a'^ ..�® ....�...o��.. AOVPNCEO ORFINAGE SYSTEMS, INC. GALAXIE FARM CHARLOTTESVILLE, VA MC45H STORMTECH CHAMBER SPECIFICATIONS IMPORTANT - THIS AFFEREFECT REQUIRES COMPACTION OF EMBEDMENT 0 Noi auarviRssfecusrvDEACCU MONE ENT vuNSEi ORSME T —AAAE FA-TAAmami..®x.x.aenwu.nwnwn.v.wm.cnm.m.­.wmo�unwxew.ex. IN _ _ .a..Nm ®,x,„xx„„..m~.a. r.,w.—'11.. 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BARU1 VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) XNA0.13 FILE NO. 18.025 BMP DETAILS C21 StormMic- he StormTech Construction Guide ^,,AAAAFD& a•wa, NEWMED 1MlEPVL54XD E0111PMEX111ST SA.madled ml m.,.nam 2Me nbl° I : s°" NAIurch dood, a. San°' Io�I. adyh ...,w g.d xx NOTE NO =sE le.om ess.ene.,Idl ace. PU�d me.tyre FN ded AGE'pe P. A. IME A diArl m e I S ml and n aoow .... I v gy 1AM Wlowln0 aeameers 1pulxe)2"I,d ml all,) Francis andlar lle dewrc lnnpe, mllard NO. IMPOPTFXT HATED �Fr smm Pmlaee , Me minlmpm reGmameM In, marder lwon an chase-xmNIN eeanxen[e m. Ali. 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As I—N Ind. nMd we, avwticrs� arm one uleedo ArGen M.zulawy�unnmenb.-a— ol�ehxr"emaria mt. GIN III Me soam,m,a,n n Scour Fabric and Chamber Assembly Manifold Insertion StormTech Isolator Row Detail U Initial Anchoring of Chambers - Embedment Stone crucha two Backfill of Chambers - Embedment Stone ice► BEEN 11 m,�, "Andy Soned dargan, holder M111d rasor Affar by mor, Propmeal dIAn. — AM urcurs. p ARIN ach chadmay, — Incomes ISOLATOR ROW V INSPECTIONMAINTENANCE nw M redwa, M1w (.ea -.I arryound, N?uecM1n na mwMmana. gxix,. d,du ealn. Pa..inmpranaeemti e-GYde, weary m'apcoung) w°n,wgemaV Ne .mp V"pan, a: ,napaF,om rya, mx,xxxbm,m_mmmeAGIN.,.m.a pdoA—Ad a d�l :'a�dan~.° wNalH� n~�ea°:I w Mhaa; .Ixged M.�IMa, .a_asxMan NMCE 'soo lxWIM'd ral°a°ni a does"As Artsuchrn °mthe ied�tllGxpa broduread AR W M p xb,e Norms. 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VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION. 1)202009,21 2) 202010,13 FILE NO 18.025 BMP INSTALLATION & MAINTENANCE C22 W.b u SEEPANNETISESSEENNINES Al I IT [rum m. ♦Fort om oA 021 4Il ENT TEN AN A— I omi F ov ss IN .n om �r 1 nLD-204 cza CIDANFS.OWverb A,,NRNI :IIC•2 IONICoM I.CNOUIR,CoRUQRNOMWWI O CHART 2 NNT Al d.Yn[ m N AT ANN, 4' E. AL CULVERT B A __ Offi-34J.9,2 / 1.50 ' b .p m ✓ WLVERT A E E .30 0m�202.5/2 E w I 3 / F a / c IT x _ _ SiR. EC a c "E TIRE (FROM LD-204. A 1NT 1 6.5) 0=55.9 A A N. `° To HEADWATER DEPTH FOR 0 0ME PIPE CULVERTS ... WITH INLET CONTROL ROTE: fOR WLVERTSA AS'RUNOFF FLOW'O' Sp1CB: HDSS RESULTB FROM SOUTHERN PEIDMOM RURAL REGRESSION EQUATION -DRAINAGE AREA ONLY. SINGE Two (2) CULVERTS WILL BE USED, TOTAL FLOW IS OIWOE I IN HALF FOR THIS NOMOGRAPH. � 1CUUERT SIZING NOW C23 r2­"`\LD-229 C23 NO PROJECTION OF PIPE BOOTIE GROUND LINE El AN :m NET .f.Fxa�IF N s �Y/ �. vn E F zwTM w.ii 3 m o n m n u[m NORNPL EMTH FOUNDATION ROCK FWNDATION FOUNOATIW SOFT. TIELOING.OR OTHERWISE UNSUITIBLE MATERIK PIPE PROJECTION ABOVE GROUND LINE ,.I .. 1 —1 via Y m F Y N:m NORMAL EARTH FOUNDATION INT, TEhn ROCK FOUNDATION FOUNDATION SOFT, TIELOINC, OR OTHERWISE UNSUITABLE MITTENS& _ noa wE amw ® ° —Nr NOTES: m�--mz Ewrmm"i'N,amNE w`o wac ® pIll E iiwN oz w`.rc"wNE. �w NEENNE IN EMENT,or EE. nv.x TETTLE EFLNLAN I n. 0 wE tumors weFFm noN:. or rE mw IEEII— „mX. INSTALL. OF PIPE CULV TS AN 5 RM 5 tWERS CIRC. PIPE BEDDING AND BACKFILL - METHOD "A" � I Al (1HDPE PIPE BEDDING DETAIL C23 Galaxle Farm UDESONAy.T.. as r F. —lI a IIN 1.ie. . nIm ..z obN .m TO m ANT E ¢m E.Ew I'w E.N. — W..e -11 HP STORM TRENCH INSTALLATION DETAIL „NI 1 rea. s. v aeE ,.i wsnoeaon ETlllS­ TE r. m,ercmonn. x ow.nmsaa.x.w�cuswrtEn mc.weTawnwarunrteruauw. %3LD-346 C23 All Q)HP-STORM (PP) PIPE BEDDING DETAIL C23 SHIMP NsINRINsat —NEANANIFURNIT � 0 0 U pp 9 Lic. 4_5I183 p0 10(I�PILOA�' pee 8T•"t . BKRU1 VSMP PLAN FOR GALAXIE FARM SUBDIVISION ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2020.07.02 REVISION: 1)2020.09.21 2) XNA0.13 FILE NO. 18.025 STORM PIPE DETAILS C23 Section 5. Stormwater Management Plan 1. ALL ONSITE RUNOFF SHALL BE ROUTED INTO EXISTING STREAM CHANNELS AT RATES THAT COMPLY WITH 9VAC25-870-66-B(3). SINCE RUNOFF RATES MEETS THE ENERGY BALANCED EQUATION, NO DOWNSTREAM ANALYSIS IS REQUIRED. 2. RUNOFF SHALL BE MANAGED USING A STORMTECH BMP. 3. WATER QUALITY WILL BE ADDRESSED BY A STORMTECH BMP AND A NUTRIENT CREDIT PURCHASE TO SATISFY 9VAC25-870-65. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County STREAM DISTURBANCE- USACE DATA SHEET PROJECT: GALAXIE FARM SUBDIVISION LOCATION: GALAXIE FARM LANE, CHARLOTESVILLE, VA 22902 COORDINATES: 37.992351,-78.493946 NATURE OF STREAM DISTURBANCE: ADDITION OF NEW CULVERT CROSSINGS FOR SUBDIVISION ROAD. THIS PROJECT IS SUBJECT TO U.S. ARMY CORPS OF ENGINEERS 2017 NATIONWIDE PERMIT 18 (NWP-18) GENERAL CONDITIONS (GCS). EMAIL COORDINATION 9/3/20 BETWEEN APPLICANT AND VINNY PERO, USACE INDICATES NWP-18 REQUIREMENTS APPLY AND THAT PROJECT IS NON -REPORTING ON BASIS OF 4.5 CY FILL [BELOW OHW]. GENERAL CONDITIONS MAY BE FOUND AT DOCUMENT AVAILABLE AT: HTTPS://W W W.NAP.USACE.ARMY.MIL/PORTALS/39/DOCS/REGULATORY/PUBLICNOTICES/ 2017%20NATION W IDE%20PERMIT%20GENERAL%2000NDITIONS. PDF. SHIMP ENGINEERING, P.C. Design Focused Engineering October 16, 2020 ` M IMP vrLic. John Anderson, PE o 45183Albemarle CountyIb�Department of Community DevelopmentIONnL 401 McIntire Road FNG` Charlottesville, VA 22902 ~40 Regarding: WPO 202000037 Galaxie Farm Subdivision — VSMP Plan SWM Calculation Packet Dear John, Enclosed is the stormwater calculation packet for the Galaxie Farm Subdivision VSMP Plan. The project is a private redevelopment of a site to create a subdivision served by public roads. The main purpose of stormwater design for this site is to route offsite runoff safely through the site into the perennial stream, Cow Branch, which flows through the site. Runoff Quantity Narrative The runoff from this development is released into Cow Branch in compliance with quantity regulations detailed in 9VAC25-870-66-B (channel protection) and 9VAC25-870-66-B (flood protection). Specifically, this is achieved by diverting the majority of the site to point of analysis (POA) 1, which is a location in Cow Branch where a large portion of the pre -development runoff currently outlets. This location was selected as a storm sewer outlet to best match the existing topography and runoff regime while optimizing the layout of the developed site (bypassing offsite runoff around the proposed lots suggested sewer placement in the ROW) and to minimize disturbance within the WPO stream buffer. Storm Sewer System E achieves 2 major design objectives: safely bypass the significant amount of offsite runoff through the site, and to route some of the onsite and offsite runoff into a Stormtech BMP to achieve nutrient treatment and stormwater detention. The offsite runoff comes from adjacent properties which include the Avinity subdivision, Cale Elementary, Albemarle Health & Rehabilitation Center (noted elsewhere in this packet as MFA @ Mill Creek), and residential land owned by Albemarle County. At POA 1, the runoff complies with 9VAC25-870-66-B(3)a (the energy balance equation) and 9VAC25- 870-66-C(2)b (10-yr flood protection). This is achieved by the detention provided by BMP 1. Runoff to POA 2 also complies with 9VAC25-870-66-B(3)a (the energy balance equation) and 9VAC25- 870-66-C(2)b (10-yr flood protection). POA 2 is the outlet of Culverts A & B and Storm Sewer System C & D. POA 3 is a final analysis of all runoff through the site at the point where Cow Branch leaves the development property. Here, the runoff complies with 9VAC25-870-66-B(3)a and 9VAC25-870-66-C(2)b as the runoff reduction provided by the SWM design exceeds the reduction required by the energy balance equation, and the 10-yr storm runoff is also reduced. Thus, all runoff quantity requirements for this development are achieved. For all of these POA's, since there is offsite runoff which cannot be ignored or designed around, as the offsite runoff is mixed with the onsite SWM conveyance systems, we analyzed for energy balance equation compliance by using what we call the Reduction Method. The energy balance equation specifies a certain Max. 912 E. High St. Charlottesville, VA 22902 1434.227.5140 1 shimp-engineering.com Developed Flow Rate for onsite runoff. However, since there is no way to effectively compute the Developed onsite runoff by itself, we take the reduction that is required for onsite runoff (Max. Qdewloped - Qpmdeveloped) and use that as the regulatory parameter for the total runoff draining to the POA. So for this project, the SWM design must achieved a total runoff reduction (both onsite and offsite runoff) that exceeds that reduction required by the energy balance equation at each POA. This has been achieved for each POA, thus the conditions of the energy balance equation are satisfied. The table below summarizes the results. 1-Yr Runoff Reduction 1-Yr Runoff Required By EBE Reduction Achieved POA 1 3.23 cfs 6.65 cfs POA 2 4.25 cfs 4.50 cfs POA 3 4.25 cfs 4.52 cfs Runoff Quality Narrative To address runoff quality requirements set forth in 9VAC25-870-65, the site land cover information was entered into the VRRM Redevelopment Spreadsheet Version 3. This included pre -development and post - development land areas. The VRRM spreadsheet, attached in this packet, showed that the project required a total phosphorous (TP) reduction of 8.81 lb/yr. Specific to this development, ZMA 201800012 requires that 25% of the total nutrient treatment must be provided with onsite BMP measures. To achieve required TP reduction, we have selected a Stonmtech BMP with an isolator row that achieves 40% TP removal to treat a portion of runoff which flows through the site. The Stormtech BMP will treat 3.23 lb/yr TP, which is equivalent to removal of 36.7% of site the sites nutrient load and satisfies the ZMA condition. The remaining 5.59 lb/yr TP reduction will be met with a purchase of phosphorous credits for that amount. Thus, all runoff quality requirements for this development are achieved. Other SWM Calculations The culverts which lie under Road A, which serves as the only subdivision entrance, were designed for the 25-yr storm. To size the culverts, the VDOT Inlet Control Headwater Depth nomograph was used. The flows used in this nomograph resulted from the Southern Peidmont Rural Regression Equation, which is a VDOT- accepted runoff calculation for road design. These flows were verified with the SCS TR-20 Type II runoff calculations computed in a HydroCAD model. All other VDOT public storm sewer calculation requirements for inlets and capacity are also shown herein. If you have any questions about this calculation packet please do not hesitate to contact me at: keanekshimp-en ing eering com or by phone at 434-299-9843. Regards, Keane Rucker, FIT Shimp Engineering, PC Energy Balance Equation Summary for POA 1 Galaxie Farm 24 Hr 1 year Storm Comparison: Oee.:l.a� I.F.'(QPreonreb ea4RVp-.ba.e)/RVoe.eboee Ode.ebpeds (QF.a.ed RVF..)/RVpe.emped POA 1 Onsite Runoff: Post Onsite Drainage Area = 9.39 ac Qpn,ee.empee [18.14(page 32) LF. = 0.8 RVrRa.em.W=(page32) Max Ode.ebped = 4.91 cis RVamo,a =4ex. 60) POA 1 is in a natural channel prone to flooding. Runoff to this point is compliant with 9VAC25-870-6 C(2)b because the total runoff to this point is reduced by an amount exceeding the reduction required by the entergy balance equation. Site complies with 9VAC25-870-66-C 2 b because the 10- r peak runoff is reduced. Energy Balance Equation Summary for POA 2 Galaxie Farm 24 Hr 1 year Storm Comparison: Qee..ped51.F.'(OP- .ebped'RVp- .ebped)/RVoe.ebpee Od-I.,4 (CIF.-a,d RVF..)/RV`.-1.1d POA 2 Onsite Runoff: Post Onsite Drainage Area = 12.69 ac Qpa,ee.empee [19.66(page32) LF. = 0.8 RVe«a.ebpee =(age32) Max Od-aaeed = 5.41 cis RVa.ebped =ne,a 60) POA 1 is in a natural channel prone to flooding. Runoff to this point is compliant with 9VAC25-870-6 C(2)b because the total runoff to this point is reduced by an amount exceeding the reduction required by the entergy balance equation. Site complies with 9VAC25-870-66-C 2 b because the 10- r peak runoff is reduced. Energy Balance Equation Summary Galaxie Farm 24 Hr 1 year Storm Comparison: Qee.a.pees I.F.'(QPrepe.ebped'RVp-.bW)/RV.-bpee Ode.ebpees(OFoaaea'RVr..)/RVoe.emped POA 3 Entire She Runoff: Post Onsite Drainage Area = 13.70 ac Qprtee.ebpee A9.92(page32) LF.= 0.8 RVP_a J.W =(paga32) Max Ode.ebped = 5.67 cfs RVamo,a =(page6% POA 1 is in a natural channel prone to flooding. Runoff to this point is compliant with 9VAC25-870-6 C(2)b because the total runoff to this point is reduced by an amount exceeding the reduction required by the entergy balance equation. Site complies with 9VAC25-870-66-C(2)b because the 10-yr peak runoff is reduced. To meet Energy Balance Requirements, Reduce Flow @ POA 1 by: (Q,, Max Qdz,) = required reduction @ POA 8.14 - 4.91 = 3.23 cis required ACHIEVED REDUCTION AT PDA 1: 6.65 cis ACHIEVED To meet Energy Balance Requirements, Reduce Flow @ POA 2 by: (Qpe� lvlax 0a,) = required reduction @ POA 9.66 - 5.41 = 4.25 cts required ACHIEVED REDUCTION AT PDA 2: 4.50 cfs ACHIEVED To meet Energy Balance Requirements, Reduce Flow @ POA 3 by: (Qp�Max Qd ) = required reduction @ POA 9.92 - 5.67 = 4.25 cis required ACHIEVED REDUCTION AT PDA 3: 4.52 cis ACHIEVED Total Runoff (Including Offsite) PREDEV 1-YR Q re- 61.70 10.YR Qpre- 271.47 W POSTDEV page 17) Q sl- 55.05 (page 39) page 24) Qpnst= 268.17 (page 49) 10-YR Flow Reduction 3.30 Note: Since the 1-yr reduction is greater than the reduction required by the Energy Total Runoff (Including Offsite) PREDEV 1-YR 71.88 10.YR Qpre- 382.11 1-YR Reduction 4.50 POSTDEV page 17) Q sl- 67.38 (page 40) Page.) Qposl- 374.54 (page so) 10-YR Reduction 7.69 Note: Since the 1-yr reduction is greater than the reduction required by the Energy Total Runoff (Including Offsite) PREDEV 1-YR Q re- 71.95 (page 17) 10.YR Qpre- 382.64 (page 24) 1-YR Reduction 4.52 Note: Since the 1-yr reduction is greater than POSTDEV gposL= 67.43 (page 40) Qposl- 374.82 (page 50) 14YR Reduction 7.82 7e reduction required by the Energy GALAXIE FARM PREDEV SMALL POA DRAINAGE MAP \ a •hj w \` - - - \ 516 i 51 512 512 --- ----------- - _- --- 494 yp6 492 _490- Aes 334,51 AC TOTAL DA TO POA 1 2S 9S TOTAL DRAINAGE TO PDA 1 = 334.51 AC ALL HSG B. INCLUDES THE FOLLOWING SUBCATCHMENTS: IS: ONSITE TO PDA 1 (17.5 MIN TOC) 0.53 AC IMP 7.28 AC FARM TURF 2.64 AC WOODS 2S: OFFSITE TO PDA 1 NORTHEAST OF SITE (TOC 1) 23.98 AC WOODSIGRASS COMBO @ CN=58 3S: MFA @ MILL CREEK (FROM WPO 2012-00087 AS -BUILT) 3.11 AC IMPERVIOUS 2.80 AC TURF 4P: MFA AS -BUILT BIOFILTER (FROM WPO 2012-00087 AS -BUILT) 5L: OFFSITE FIRESTATION (PLACEHOLDER FROM WPO 2012-00087 AS -BUILT) SR: FRAZIER DITCH (ADDED TO MODEL OFFSITE SWALE) 7S: OFFSITE TO PDA 1 NORTH OF SITE (TOC 111) 52.18 AC 3 ACRE LOTS @ 30% IMPERVIOUS 8S: OFFSITE TO PDA 1 NORTH OF RTE 20 (TOC V) 59.92 AC s ACRE LOTS @ 30% IMPERVIOUS 9S: OFFSITE TO PDA 1 SOUTH OF RTE 20 (TOC VI) 157.69 AC WOODS/GRASS COMBO @ CN=58 10L: PDA 1 TOTAL DRAINAGE TO PDA 2 = 469.46 AC ALL HSG B. INCLUDES DRAINAGE TO PDA 1 PLUS THE FOLLOWING SUBCATCHMENTS: 11S: ONSITE TO PDA 2 (12.9 MIN TOC) 0.07 AC IMP 1.40 AC FARM TURF 0.51 AC WOODS 12S: OFFSITE TO PDA 2 SOUTH OF SITE (TOC VII) 132.97 AC WOODS/GRASS COMBO @ CN=58 13L: PDA 2 TOTAL DRAINAGE TO PDA 3 = 470.73 AC ALL HSG B. INCLUDES DRAINAGE TO PDA 1 & 2 PLUS THE FOLLOWING SUBC 14S: ONSITE TO PDA 3 (11.2 MIN TOC) 1.27 AC WOODS/GRASS COMBO @ CN=58 ISL: PDA 3 1 " 469,46 P DRAINA @ POA 12S ,,o-470.73 AC RAINAGE _1:i = TO1SQ E ARE L 0 15 100 0 100 200 300 Scale: 1 "=100' TOTAL DRAINAGE TO PDA 1=333.36 AC GALAXIE FARM ALL HSG B. INCLUDES THE FOLLOWING SUBCATCHMENTS: S UPSTREAM DRAINAGE NOTE (MFA AT MILL CREEK BIOFILTER) : 1S: ONSITE TO BMP 1 VIA F3&F4 (5 MIN ASSUMED TOC) P OS T D E V MA L L 0.50 AC IMP THE MFA AT MILL CREEK BIOFTILER (LEGAL REFERENCE DB III PG 0.63 AC TURF POA DRAINAGE MAP 325334) DRAINS INTO THE PROPOSED GALAXIE FARM BMP. 0 AC WOODS THIS MFA BIOFILTER WAS DESIGNED WITH WPO 2012-00087 AND IS 2S: OFFSITE TO BMP 1 VIA F2 (TOC 1) SHOWN WITH SYMBOL 4P. IN THAT STORMWATER MANAGEMENT PLAN, 1.06 AC IMP THE BIOFILTER WAS DESIGNED TO OUTLET TO BOTH THE "FRAZIER" 3.50 AC TURF PROPERTY (TMP 91-12B OWNED BY BEN & MARGARET FRAZIER, 19.32 AC WOODS ROUTING SHOWN WITH 6R SYMBOL) AND TO THE OFFSITE FIRESTATION 3S: MFA @ MILL CREEK (FROM WPO 2012-00087 AS -BUILT) (TMP 91-21 ROUTING SHOWN WITH "SL" SYMBOL). THE BIOFILTER 3.11 AC IMPERVIOUS DRAINAGE AREAS SHOWN HEREIN, AND USED IN THE HYDROCAD 2.80 AC TURF RUNOFF MODELS, WERE TAKEN FROM WPO 201200087. REFER TO THE 4P: MFA AS -BUILT BIOFILTER (FROM WPO 2012-00087 AS -BUILT) "POSTDEVELOPMENT DRAINAGE MAP" ON PAGE 100 WITHIN THE 51 OFFSITE FIRESTATION (PLACEHOLDER FROM WPO 2012-00087 AS -BUILT) INDEPENDENT REPORTS SECTION OF THIS CALCULATION PACKET. 6R: FRAZIER DITCH (ADDED TO MODEL OFFSITE SWALE) 7P: BMP 1 8S: ONSITE TO PDA 1 (5 MIN ASSUMED TOC) 3.56 AC IMP 3.70 AC TURF / \ ` •� `\ \ i C ' \ `� �\ \ \ 1 y, I i 1 `\�\\ \ `� 1.00 AC WOODS Ii OFFSITE TO PDA 1 VIA E9 (TOC II) I`y I i i i i /� `��`��` / 10.83 AC '-ACRE LOTS " @ 30% IMPERVIOUS III OFFSITE TO BMP 1 VIA E7C (TOC III) T.M.9tl-2E ,Ili 38.52 AC 1 ACRE LOTS COUNTY OF \ALBEMARLE ' I I/ o a I \ 1 I I I % / / ; (MONTICELLO FLIRE STATION) @ 30 /o IMPERVIOUS It -1 -670 / / 11S: OFFSITE TO PDA 1 VIA G7 TOC IV) 2.84 AC z ACRE LOTS / ,' / / I 1 \ \\ I v I I I I I 1 1 I r / , , , / , I ` , / , / @25 /o IMPERVIOUS \ \ ' F\ -_, i / / \ 1 O \ \ 1 i l / I �-`'"-``\� II %' i 12S: OFFSITE TO PDA 1 NORTH OF RTE 20 (TOC V) It 1 /' / I- \ \�\\`•_ \'' r 89.92 AC gACRE LOTS T.M.91-iD I. I / , / / /� / / / / % % , / -\ \ ,i / @ 30% IMPERVIOUS \ \ DOMINION CRANE & \ I I / / / ' ' ` `�' RIGGING INC / / l- _ �`� \ /, -' 135: OFFSITE TO POA 1 SOUTH OF RTE 20 (TOC VI) D-150237-594 157.98 AC WOODS/GRASS I/ / _ , \ / / _ \ . J I COMBO @ CN=58 L. \ 14L: POA 1 SERVXERAUTHOR X_���` `� I j I/ D.B. ` ` " /� I TOTAL DRAINAGE TO PDA 2 = 469.72 AC , \�`� ALL HSG B. INCLUDES DRAINAGE TO POA 1 PLUS THE FOLLOWING SUBCATCHMENTS: I 155: ONSITE TO POA 2 (5 MIN ASSUMED TOC) � 1.10 AC IMP ' 1.24 AC TURF 0.96 AC WOODS / r / IOFFSITE TO POA 2 VIA A2 (TOC VII) / r.Ms1-zA Ill THE TANDEM SCHOOL 133.06 AC WOODS/GRASS D.B.1623-649 COMBO @CN=58 17112 FA AT MILL CREEK) / 1\ ALBEMARLE HEALTH \ \ \ I \ \ TOTAL DRAINAGE TO PDA 3 = 470.73 AC --------------� CARE CENTER LLC ALL I B. INCLUDES DRAINAGE TO PDA 1 & 2 PLUS THE FOLLOWING D.B.4425-325 PLAT / I \\ I \ \ ' r l i .B.4127-347 SUBCATCHMENTS: FOUND R$ 18S: ONSITE TO PDA 3 (5 MIN ASSUMED TOC) A' ,// / /; PLA 0.03ACIMP R./ 0.18 AC TURF 0.80 AC WOODS T.M.91-13 /(CALF ELEMENTARY) COUNTY OF ALBEMARLE\`� SCHOOL BOARD D.B.1033-313'\ / D.B.1033-313 \ \ /r T.M.911120'--_--- \ / / D.B.619-368 PLAT \ \ \ r GALA)tlt LLC ,` D.B.4YS2-347 T.M.9 - r/ BE & A A„„ MARGARET A /V 21-Slle �521 523 PLAT D..372sIPLAT T.M�91-12A r, i i r r / i '' i i It CL .$HELHORS VIR IA OMAS D..1049-86 1-523 PLAT \\ ` \ � \\ / •�\ ` / r \\ B3 ` - \--____S.51 I MCOUNTY OF ALBEMARLE I i , ' ,,,JJJ 1 1 I I l I l I I SCHOOL BOARD / /- �' zo --------U.0.7979-46 & 47 PLAT I ,/ / I1COUN Y019t,9-44 A1\LE DB.\\\ 1 `\ \\\ ��\ //-_____-- Ii it ✓ _ AVINITY SUBDIVISION v v`, I 1\ \ \ j I /, ' ' / i i ---_ - 'F \. \ \ \� - - 18S - --___ -''- \ _ \ \ ; \ `�\\ COUNTY OF ALBEMARLE '' 1101, .� _ _ I 4 \ 4 to- - - - - 0 4, jf it/ I I , / ,,; AC TOT �\ If I 333.36 AC TOTAL \ ` tip.; , / 470.73 AL / _��AREA TO POA 1 - ,,;DRAINAGE AREA ----AREA I 1 ,.■1 / / ti� . :----TO POA 3 it 1 I i 1 1 I -/_I ■' �S ` 469.72 AC TOTAL,, DRAINAGE AREA TO POA 2 8 TOTAL SITE AREA: 13.70 AC ALL AREAS ARE HSG B WOODS: 3.89 AC TURF: 9.21 AC IMPERV: 0.60 AC ----------------------- GRAVEL GRAVEL GALAXIE FARM PREDEV VRRM IMP. TOTAL SITE AREA: 13.70 AC ALL AREAS ARE HSG B WOODS: 2.77 AC TURF: 5.52 AC IMPERV: 5.41 AC FOR VRRM CALCS, ONLY AREAS THAT WILL BE PLACED WITHIN A SWIM FOREST/ OPEN SPACE EASEMENT ARE CLAIMED AS WOODS. REQUIRED VRRM TOTAL PHOSPHOROUS REDUCTION: 8.81 LB/YR ACHIEVED TOTAL PHOSPHOROUS TREATMENT FROM BMP1(ADS STORMTECH ISOLATOR ROW ): 3.23 LB/YR ONSITE TREATMENT PERCENTAGE: 3.23/8.81 = 0.367 = 36.7% REMAINING TP TREATMENT REQUIRED: 5.59 LB/YR. THIS WILL BE SATISFIED WITH THE PURCHASE OF OFFSITE NUTRIENT CREDITS. .m ir.ro.11mom ---- s IMP. E ■ e 100 TURF TURF u GALAXIE FARM POSTDEV VRRM IMP. . 100 / / 200 300 MAP Scale: 1 `100' 71 I \ 11 \ I \ 1 \ \ / I I I , ` , l \ i � \ ' I / 1 / I I \- I I 1 I I I 1 I TOTAL DRAINAGE TO BMP: ALL AREAS ARE NSG B 1. OFFSITE AREA FROM MFA @ MILL CREEK TOTAL AREA= 5.91 AC THIS AREA IS 65% TREATED BY BIOFILTER. EQUIVALENT UNTREATED AREA = 35% OF TOTAL = 2.07 AC TURF: 0.98 AC IMPERV: 1.09 AC 1 / I / REEATEID toWIVAILB+NF = jo OF AREA L1 M R4PIU,T\�RGM MFA= 1 2. GENERAL OFFSITE AREA TOTAL AREA= 23.88 AC THIS AREA IS PARTIALLY DEVELOPED AND ITS RUNOFF NATURALLY FLOWS THROUGH THE SITE. WOODS: 19.32 AC (NOT INCLUDED IN VRRM DA. A SPREADSHEET) TURF: 3.50 AC IMPERV: 1.06 AC 3. ONSITE AREA TOTAL AREA= 1.13 AC VIA STORM INLETS F3 & F4. TURF: 0.63 AC IMPERV: 0.50 AC TOTAL AREA TREATED BY BMP 1 = UNTREATED TURF&IMP FROM MFA @ MILL CREEK + TURF&IMP FROM GENERAL OFFSITE + TURF&IMP FROM ONSITE = _ 0.98 + 3.50 + 0.63 = 5.11 AC TURF 1.09 + 1.06 + 0.50 = 2.65 AC IMP \\ TOTAL TREATED = 7.76 AC \ RESULTING BMP TREATMENT VOLUME (FROM VRRM SPREADSHEET, DRAINAGE AREA A TAB) = 12,848 FT I I1, / I I I I ' GALAXIE FARM fI",,' POSTDEV BMP \fl / TREATMENT MAP \ \ - --' ---- \ 1 )I9.32 AlCWOODS ' ( 7/ \ '.09 AC IMP! I i // \\ 3.50ACTAJRF/ I ( 1 1 1.13 A, TO Bill DIL 1 I ' ' I I I 1 1 I 1 I / / I / / I ' I I --------------------------- 11 I / / � I / D II 201� / 72 projett No GALAJHE ® data mseub Date: 9/21/2020 tram valu Linear Development Project? No celcvladan cells Information -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) 4 12.00 Check. BMP Design Specifications List, 2013 Drafl Stds&Specs required -Maximum randuothan Linearpr lect? No The site's net hactresme in unimmums, cover lacteal es- Wed cover ereas entereacormai,? J Total disturbed area entered? J Land cover sta efared—nnalnmbea iensuden mvexvteenman 3 a9 3.89 manaaeanerlaaBml—aixaaal graaad a, 9.21 ra,axor Nler ar ry to mwai/managea 921 Imperawmf ,la✓eal 0.60 Be. ro.n/,Pen space beams) —nmhtmbed z.n yaemal In-t/nyn awre m,earmtea leM zn mansedea net lanai — aixaaal gad ed a, s.sz raax a, aim, an be de mtwe asenaRea ssx Imparvim, Wear(,am) S.al S.al Area Cllttkl M. I OK. IOK. IOK. I 13.. I wn BvOm" spaee mean 1-1 x Pmlmee m teetrd,ae Nlb the v,„Kira, R,mg eed,ermn maNd fnnclamR RnnnH fnef dessert, mW Naeaebpmem Ysted Mpdeda east a deer NamaraNamara...me pa,u[ wresta., ssanf ,laved 3P9 2.22 Poresr/Open Spon Cwe, lee ea) 2.P weiRaea Bertrand o.03 0.03 welemea xvlm,en) 0.03 %nmav 28% 3]% %rarer z0% Maegaa itdterm, laoo) 911 5.52 aroamil.Rctee, lee ad 5.52 -eyMea Ream 010 0.20 Wcp.6n10., Mudd 0.20 %ManraBill 67% fi2% %surmara Tmr O0% Impeniom[we (aeraad 0W 0.60 mpenitm[we, laves) 5dl BdimpeM,ml 0.95 0.95 BdimpeM,ml 0.95 %Impandmo are ]% "ran nitm 39% Tn41 sun Am(aeea) FBF0 8J9 Been Sm Am,ured 1310 Sin. O.1R 030 Nml pout pas Am. O. ma-R,Dea1,pmea Treammt V,l,me vTrue. laae-ftd 0.21az 0.1a1a rvtwme 0.12 lare-ftl Final Pmr-De elopmea a Me -Rene elovm,reverent volume 9,1]9 6,328 a err Vme au re'ab(crmn 2x,sa6 m Ilard nnalPast - Pre-ReDeVelopme. MLoatl pb/erl S."0.01 Development TP Load ICAS (lb/yQ 11,11 TI prpad w.neoae'a/aIX/vr) pwame At a.as m,,r, Rm cmhn pd/yp IasuWameMae rc ce�arr d 3.6d had pmpmm mrnawmcemnmmn,l Pe.nlmmenf MMmn,minusperv.rs MMmcer l/mes%tyen sptnmmantPN e,tt#aOexNopmam F,n4/Oeen ssex 2.n Gnr Pare) -panned"Formal Om %wren 31% Named Tar Geer 552 (anal weaneea. warn 010 %Bervgea Tud was ReM.ImseMwx O60 Guar Parma ktumpeniwx) 0.95 ReNeed 13H aeet. 01O Treatment Volume and Nutrient Loatl AsurRmseealmearnamat trearamarves.re o.1CN P ftl ei...Neavd,m. Immumnaamsee 631`8 ladxlawl -Re0.eel,pmmt Wad lLl aM nar•r wecea,pme eras plasial 1 e.elet'eeeupmea—mla KK I ere-aseewPmsam.—Are.m,m Nlareal a.R1 .Rmpemrtrd des ealcement T. vaame o3808 Parme) Pass-Deve"Beent Tramareat m volue(cable 161SB1 Oal tmoeeluprma IF wad Ilb/M Wad, TP Laaa R"b"i n TP Load Redman. Require. wr laPon Lea 0.36 Required for New 8A5 0.etleve IIb/yr) Impereaus Area Qb/yr) RNURitn bNtw new tlevem's Bent la,a e li ... nareeuiM TP Load Reduction Required(lb/yr) 1 8.81 Drainage Area A my keep .............. NO 2 FA Fill 1 7 75 Stormu,ater Best Management Pnttires IRR= Runoff Reduction) Tvxmvpenu.wluuerw amienl In o<. RNM pm Oawupnwpnwv. 1nih n. I...A. IMI kab pn[tlu RMINIF plm oMnlxl ManRRM . Anni'l ral r.. All (Al ®m anx.10 Pied la'1 we lx'1 m< MW m.ne wnrl�l pR�lvw RRIIMp unvlul em .An, nl nnan�l Wa Ile) puepnvw Mar OM RM obbbiring nvu III Rwnlx on SAM�"elvwp M a vaeormmm�plexl mnnlslersl xasmpep Nenus um�n m ilmm i e. simile Rixxnon�ne'm'nm 4ouix onxle voy IT -IN lspe<nl sce�,1el ' M.InFlIn—, All ift.,vi lspaaminx. n l5pa wl nxl5pawl o mwaxex .—SE A 0 D 0 0 0" onryvw�MceMi,Al " a. xmea eeemem 11(p n) exmee a-n—vx ll nl a xess1. -e 'ainlspanl nss anre QD busty A xpexvye ipanlenml sa.dysaiein nol sill Rvax 'P., rslre M reaenxon eioruwion els[%In, Ann— in I— NO nre.I III nn nsl my msl mmm m[nm�ssmn' area.4e A. m[nonx�e mnree.[N pp m ue� o ix so a o o a o nm om I -in m nal Tm nel G[x[G. ox. Toiai wx[f r nmxalax IN DA, n lxel .A.A pF/v RUNOFF ABRUFTEO. El A lie/vtl TONAL pxoswows uma x Ixc Arrtn AMONG wxnn nmurnox pnarn[Es IN o.n. A Im/y,l BEEwarta QuAlOrr MpuaxCF.....E.'..GLCuu110vs e+Ino xxl o��0000mmmmm� ER49I n 1 TOTuwxwnrvREaRG TREATER PR AC4CI. OF TOTAIpRGpxBRx,REMBV,RmxMEnnx,TE IFIVII0 .A.A bN; IiA/y, E�:N FA Tmapxpux ....RD/vn .AIIn/yp Tm MOSPRORURREmaRIxRAFWRApp INsBMPp nRERUrnnxilx R.A.AIIn/y,l SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCY CALCULATIONS FIT A.AI:IN l xnROOEx REAwvERwnxouT .A.ale/yp T LxUw Exu EoIxn.AAlm/y,l TOTAL FURNOT REDLIFTECIN IN <A( xlwocn REmovio wrtx EllI Rnunlox pnarncEs lx o.A.A Ill BEE WATEN QUAL I COMNMNC[ TAB FOR ATE GINGTTONS IR yOavmly, WE) pe lcwnal Ell Wo 11, ar lneI IA. M111h,TAId nn he RRl ®mmmm ne, lnp nnl 0mmmm ommmm mmmmm Mp lne RRl om�m 74 n� Site Results (Water Quality Compliance) Area Checks D.A. A D.A. B D.A. C D.A. D D.A. E AREA CHECK FOREST/OPEN SPACE (ac) 0.00 0.00 0.00 OK. IMPERVIOUS COVER (ac) 2.65 0.00 0.00 0.00 OK. IMPERVIOUS COVER TREATED (ac) 2.65 0.00 E0.00 0.00 T MANAGED TURF AREA (ac) SAL 0.00 0.00 MANAGED TURF AREA TREATED (ac) 5.11 0.00 0.00 0.00 OK. AREACHECK Site Treatment Volume (ft3) 22,966 Runoff Reduction Volume and TP By Drainage Area D.A. A D.A. B D.A. C D.A. D D.A. E TOTAL RUNOFF REDUCTION VOLUME ACHIEVED (ft) 0 0 0 0 0 0 TP LOAD AVAILABLE FOR REMOVAL (Ib/yr) 8.07 0.00 0.00 0.00 0.00 8.07 TP LOAD REDUCTION ACHIEVED (Ib/yr) 3.23 0.00 0.00 0.00 0.00 3.23 TP LOAD REMAINING (Ib/yr) 4.85 0.00 0.00 0.00 0.00 4.85 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0.00 D.00 0.00 0.00 0.00 0.00 Total Phosphorus FINAL POST-DEVELOPMENTTP LOAD(Ib/yr) 14.43 TP LOAD REDUCTION REQUIRED (Ib/yr) 8.81 TP LOAD REDUCTION ACHIEVED (Ib/yr) 3.23 TP LOAD REMAINING (Ib/yr): 11.20 REMAINING TP LOAD REDUCTION REQUIRED (Ib/yr): 5.59 Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD(Ib/yr) 103.22 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0.00 REMAINING POST -DEVELOPMENT NITROGEN LOAD (Ib/yr) 103.22 rp DEQVlrglnia notion Reduction Method Roommlopmem Compliance Spreadsheet -VeWrlaw l.... Moped woaulixl .1 OeSIpn Specfrcm. W, 3013 OnX zeds a specs Site Summary Project Ttle: GFW%IE FARM rate: VimS Total Randall 03 Total risturbed Acreage I 12.. Site land Cover Summary Pre-ReDevelopmem land Cover (acres) R-In L-He Csolls Osolls Toms %ofrmal fare./Open laves) 0.00 3.89 0.w 0.00 3.89 28 Managetl Tu.laved 0.00 9.z1 0.00 0.00 9.21 67 Impervious Cnner(aves) 000 O.m 0.w 0.00 0.. 0 13.70 1. Port-ReDevelopmem land Cover (acres) R seds Bsells Csolls Osolls Tools %of Talal fore./Open laves) O.W 2.77 0.00 O.W 2.77 20 Managed Turf (acres) 0.00 5.52 0.00 0.00 5.52 on Impervious Coeer(acres) 1 0m 1 5.41 1 0.00 1 Ill 5.41 39 mmNr9vn *me .mv:must be pwM1vml In a'mavn® mich An omeni, Runoff inductee Mm6oa 1 13.70 1W Site Tv and land Cover Nutrient Loads Final Po.-0euelopmenl post- port Adjusted Pm (Port-Reoerelopmsn r Reevelopment BevelopmeM m ReDevelopme .N.. anPmeme) IN..bp.mo.n sxeM rA6 o.zo 0.m 0.20 .an-. Volume(El) 2z,%fi 6,378 115,587 F,378 TP Wad(Ib/yj ]6.03 p.pl 10A2 0.01 Baseline TP Imed /yr): 3..' Ammoon.neveene m.dommrnn"meed Tool TP load Reduction "Weed (ib/yr) a- o.3fi 9.ns Final Port-Developmem Wad )Port-ReD mIopmem4 New lmimenous) Pro- R..;.I.pmenl TX mad (Ib/ye) 103.22 p136 pre, final part.-I.pment postvel -"ceapment TP ReDevelopmem TPEoatl per acio Wad per xre TP Wad per acre (Iblane/,r) (Iblane/9Q Ib/acre/ oAs l.os o.qs Site Compliance Summary M.nmum%R.auvmn R.vmmae.Io., 2x +No1e:%Reemtion wnreduzpmeeevenpmemmmwmMss moo mepimmbaselmerox of3.salyp y.a2 w/Wpl ceeelopmmt m,a (R.9.;mamm,n;m,/mennap...-eon-a.pe.mm.a-mxbre 4mtlof3.6U916ry.L m,.m.moa-,a. omn,p.m m/or/yr Tom Runoff Volume Reduction(ft) 0 Total W Wad Reduction Achieved lib/yr) 3.23 Tamil TR Wad Reduction Achievetl(Ib/yr) O.W Remaining Post Development TP Wall (lb/P) 1L20 Remainin, TP loatl Reduction ll 6/yrl s.s9 Required Drainage Area Summary DAA BAB BAC BAD DAe .1 fore./Open)acres) 0.W 0.W O.W O.W O.W O.W Managed Tu.)acres) 5.11 O.W O.W O.W O.W 5.11 Impervious cower(aves) 2.65 0.. 1O.W D.W IO.W 2.65 Tmeloem(mees) I's I B.OB ..00 1 7.T6 Drainage Area Compliance Summary oAA DAIS DA.0 BAD DAE .1 TP moot Retlu¢tl(lb/yr) 3.23 O.W (1 0.00 O.W 3.23 TN bad Reduced (Ib/y') 0.W 0.W O.W o.W O.W 0.W Drainage Area A Summary Land Cover Summary ASWIs Bsolls csolls owls .1 %of Talal sorem/Dim(aves) o.W o.in 0.W O.W 0.W 0 Managed Tu.(aves) 0m 5.11 on O.W s.11 6fi Impetuous cover (amend om z.6s 0.W Om 2.65 3a 716 BMPSelections Managetl Tu. Imper io-covr TP bad from practice CxtlitArea CretlltArea BMPTreMmenl Upstream OMremed TPWd TPRemoced TP Remaining Bown.ream Treatment Volume (W) PracticesIbs to Friction (lbs) (Ib/y') (lb/yr) to be Employetl le.b. Manum.uretl TreMment Beim Flltedng s.11 2.fis 12�Bag.39 0.W B.Ofi 3.33 C.M TWIImpeMous Cnvmr 2tetl(2-d 2b5 . l Tu.AreaTn.d(2eaes) 5.11 Total TP bad Reduction Achieved! In BA. v 3.23 real TR bad Reduction Achie¢ed In oA (lvyr) r.W 76 $umms, Pan Galaxie Farm Inlet Drainage Area Summary Impervious C 0.9 Pervious C 0.3 Woods C 0.2 To Inlet Area Impervious Turf C A G2 10,943,095 2,188,619 8,754,476 0.42 251.22 F4 18,600 11,440 7,160 0.67 0.43 F3 27,270 13,700 13,570 0.60 0.63 F2 1,040,000 46,351 993,649 0.33 23.88 F1 00 0 0 0.71 0.00 E9 471,777 132,173 339,604 0.47 10.83 E8A 20,483 14,310 6,173 0.72 0.47 E8 39,982 19,230 20,752 0.59 0.92 EX 1,702,368 510,710 1,191,657 0.29 39.08 E7A 10,746 7,344 3,402 0.71 0.25 E7 19,955 9,973 9,982 0.60 0.46 E6Z 00 0 0 0.30 0.00 E6A 17,762 12,437 5,325 0.72 0.41 E6 29,652 12,140 17,512 0.55 0.68 E5 55,189 26,235 28,954 0.59 1.27 E4 6,430 5,100 1,330 0.78 0.15 MA 17,780 12,446 5,334 0.72 0.41 G1 26,021 16,731 9,290 0.69 0.60 D3 51,625 18,486 33,139 0.51 1.19 D2 22,451 8,890 13,561 0.54 0.52 C3 12,692 10,935 1,757 0.82 0.29 C2 6,038 5,570 468 0.85 0.14 B2 14,726,791 3,092,626 11,634,165 0.43 338.08 A2 5,802,223 1,160,445 4,641,778 0.42 133.20 Ditch 1/G3 159,704 38,751 120,953 0.45 3.67 Road E CG-7 13,163 8,728 4,435 0.70 0.30 79 GALAXIE FARM i POSTDEVINLET / \ DRAINAGE MAP HEET(=LpW / Q�F/ / \0.6 ACT 3 1 / 79 ,� //EA c v \V A \ 29.7@ AC TOTAL TO F2 C2 C TO C2 Al Ear aRIC( SHE T 70.83 A61 \ \ r-- __ ° i� RUN FF — .r T xo / ,/� 1 / d/ - A u II It e ' 39.08 AC-AVINITY — ss---- ee_ \\ 1 I VTR€ATED TO E7C_—_ ----- —� \ 1� 3.67 AC TO DITCH? \ _ /— — — — — — — — — — — — — — — — — — — — — It Ifoo z 0 / J)10 / 2pq 1 S�aie;-.1 "=1 OOi' Culvert A - A E L 133.2 Ac 0.208 sq mi 927.5 ft 4440 ft 0.84 mi Southern Piedmont Regression Equations Storm Multiple -Parameter Drainage -Area -Only Q2 21.6A0 881E0a10L- 0.423 48.5 cfs 122(A)0.635 45.0 cfs Q10 38.8A0848E0.379L-0.430 147.1 cfs 335(A)0.596 131.5 cfs Q25 54.8A0.852E0.392L 0.463 227.0 cfs 504(A)o.sai 202.5 cfs Q50 74.3Ao.860E0.390L-0.495 301.5 cfs 661(A)0.570 270.2 cfs Q100 101A0.869E0.382L-0.529 384.8 cfs 849(A)u.b59 353.1 cfs A E L 339 Ac 927.5 ft 6411 ft 0.53 sq mi 1.21 mi Southern Piedmont Regression Equations Storm Multiple -Parameter Drainage -Area -Only Q2 21.6Ao.881E0.310L- 0.423 94.5 cfs 122(A) U.bJ5 81.5 cfs Q10 38.8A0.848E0.379L- 0.430 277.5 cfs 335(A)o.596 229.4 cfs ^ 5 54.8A0.852E0.392L-0.463 424.5 cfs 504(A)o.sa1 348.4 cfs Q50 74.3Ao.860E0.390L- 0.495 561.3 cfs 661(A)0.520 460.2 cfs Q100 101A0.869E0.382L-0.529 713.6 cfs 849(A)°559 595.2 cfs 10-YR FLOW TO A+B (FOR OP): 360.8 cfs HALF: 101.24 HALF: 174.21 83 Chapter 8 - Culverts Appendix 8C-2 Inlet Control, Circular Corrugated Metal OCHART 2 eo 10,000 1B6 9,000 EXAMPLE (I) 156 6,000 BOB 6 12) 5.000 o•um{ 3) 144 4,000 4 w 11w B. 6. q2 d 3,000 0 (Nwi 6. 120 w r.s ].• F 2.000 121 9.1 9.3 4' 5. 09 a Ill 2.2 4.4 •01n f.0 3. 4. 96 a � 1,000 3, BOO 3. v 64 at 600 2 500 CULVERT B �2 400 1.50 2 2. Q25=347.9/2 Z Soo / s — — =173.9 CFS Z 200 •34 Z c 1.30 54 O w W CULVERT A Q25 202.5/2 < eo 0 =101.2 CFS 'u / = ° 1.0 o 42 50 n ¢ 40 c 1.0 Iw- S6 30 HW ENTRANCE ¢ STR. E7C w z SCALE D TYPE •8 (FROM LD-204, 0 33 20 (1) xabal a G .e ° 1=6.5) Q=55.9's- SO (2) M111 q. b pnlpq Q e 27 10 l]I Msp{lins s c 9 .7 T i � 29 6 .7 21 5 T. ss sob 121 4 -.1 i1.0411r r.. .1141{111 owl"A Iin• Ih'.'. .B 3 B onE o m•u{, er rsnru e{ .9 Is ill u11 r4M1l. 2 IS 5 1.0 .5 — ` 12 HEADWATER DEPTH FOR C. M. PIPE CULVERTS WITH INLET CONTROL su•2nu or PUBLIC BINDS AN. 14Q NOTE: FOR CULVERTS A & B, RUNOFF FLOW "Q" Source: HDS-5 RESULTS FROM SOUTHERN PEIDMONT RURAL REGRESSION EQUATION -- DRAINAGE AREA ONLY. SINCE TWO (2) CULVERTS WILL BE USED, TOTAL 7 of 7 VDOT Drainage Manual 89 Galaxie Farm LD-204 Stormwater Inlet Computations Inlets on Grade Only Sag Inlets Only m a E z m - @@ >r1i0 Zwm O m y n 2 r Na"m- m o. xC ra EU HO V E nQ u U r `ul cnmd mo. ffi c7 a (7 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (ft) (ac) (in/hr) (cis) (cfs) (cfs) ('/') ('/') V) (it) (it) (cfs) (cfs) (ft) (0) 00 F4 DI-36 12 0.43 0.67 0.29 4.0 1.14 1.14 0.015 0.040 0.020 0.083 3.38 0.19 100.0% 1.14 0.00 6.5 1.86 1.86 5.00 0.23 100.0% 1.86 0.00 F3 DI-36 10 0.63 0.60 0.38 4.0 1.51 1.51 0.015 0.025 0.020 0.083 5.62 0.24 100.0% 1.51 0.00 6.5 2.45 2.45 7.42 0.28 100.0% 2.45 0.00 F2 DI-7' 4x4 23.88 0.33 7.80 4.0 31.20 0.00 31.20 0.025 0.050 0.150 - 1.29 1 1.29 7.09 6.5 50.71 0.00 50.71 1.78 1 1.78 8.51 'Assumes 25% clogging E9 DI-7' 4x4 10.83 0.47 5.07 4.0 20.28 20.28 0.025 0.100 0.120 - 0.82 1.5 0.55 8.87 6.5 32.95 32.95 1.14 1.5 0.76 11.49 E8A DI-36 12 0.47 0.72 0.34 4.0 1.35 0.00 1.35 0.015 0.065 0.040 0.083 3.12 0.19 100.0% 1.35 0.00 6.5 2.20 0.00 2.20 4.74 0.23 96.79% 2.13 0.07 E8 DI-3C 14 0.92 0.59 0.54 4.0 2.16 0.00 2.16 0.015 0.065 0.020 0.083 4.68 0.22 100.0% 2.16 0.00 6.5 3.51 0.00 3.51 6.39 0.25 92.4 % 3.24 0.27 E7C 36" ES-1 - 39.08 0.29 11.14 4.0 44.55 0.00 44.55 0.025 0.150 0.042 0.083 0.61 4 0.15 12.16 Note: Culvert HW/D = 1.5 for Q=55.89. Inlet is satisfactory. 6.5 72.40 72.40 0.85 4 0.21 14.58 E7A DI-313 10 0.25 0.71 0.18 4.0 0.70 0.00 0.70 0.015 0.092 0.020 0.083 1.67 0.16 100.0% 0.70 0.00 6.5 1.14 0.07 1.21 2.20 0.17 97.2 % 1.18 0.03 E7 DI-313 12 0.46 0.60 0.27 4.0 1.10 0.00 1.10 0.015 0.092 0.020 0.083 1.98 0.17 100.0% 1.10 0.00 6.5 1.79 0.27 2.05 5.32 0.20 95.0 % 1.95 0.10 E6A DI-3C 10 0.41 0.72 0.29 4.0 1.17 0.00 1.17 0.015 0.030 0.020 0.083 3.92 0.20 100.0% 1.17 0.00 6.5 1.91 0.03 1.94 5.65 0.24 98.6 % 1.92 0.03 E6 DI-313 12 0.68 0.55 0.37 4.0 1.49 0.00 1.49 0.015 0.030 0.020 0.083 4.73 0.22 100.0% 1.49 0.00 6.5 2.41 0.10 2.52 6.59 0.23 99.3 % 2.50 0.02 E5 DI-3C 10 1.27 0.59 0.74 4.0 2.97 0.00 2.97 0.015 0.012 0.020 0.083 0.21 0.5 0.42 4.11 6.5 4.82 0.02 4.84 0.29 0.5 0.58 8.11 E4 DI-313 8 0.15 0.78 0.11 4.0 0.46 0.00 0.46 0.015 0.022 0.020 0.083 1.86 0.16 100.0% 0.46 0.00 6.5 0.74 0.02 0.76 3.01 0.19 100.0% 0.76 0.00 E4A DI-3C 8 0.41 0.72 0.29 4.0 1.18 0.00 1.18 0.015 0.022 0.020 0.083 4.63 0.22 100.0% 1.18 0.00 6.5 1.91 0.00 1.91 6.32 0.25 94.6 % 1.81 0.10 G1 DI-36 10 0.60 0.69 0.41 4.0 1.64 0.00 1.64 0.015 0.020 0.020 0.083 0.24 0.5 0.48 5.77 6.5 2.66 0.10 2.77 0.28 0.5 0.56 7.73 D3 DI-3C 8 1.19 0.51 0.61 4.0 2.44 0.00 2.44 0.015 0.010 0.020 0.083 0.30 0.5 0.60 8.63 6.5 3.97 0.00 3.97 0.34 0.5 0.69 10.82 D2 DI-313 12 0.52 0.54 0.28 4.0 1.11 1.11 0.015 0.020 0.020 0.083 2.62 0.18 100.0% 1.11 0.00 6.5 1.80 1.80 4.20 0.21 100.0% 1.80 0.00 C3 DI-3C 6 0.29 0.82 0.24 4.0 0.95 0.95 0.015 0.006 0.020 0.083 0.25 0.5 0.49 5.97 6.5 1.55 1.55 0.28 0.5 0.57 7.82 C2 DI-3C 6 0.14 0.85 0.12 4.0 0.47 0.00 0.47 0.015 0.020 0.020 0.083 0.21 0.5 0.42 3.96 6.5 0.77 0.00 0.77 0.24 0.5 0.48 5.66 Road E Curb CG-7 4" Curb 0.30 0.70 0.21 4.0 0.84 0.00 0.84 0.015 0.040 0.020 0.083 2.36 0.17 0.52 D/H" 6.5 1.37 0.00 1.37 3.97 0.21 0.62 D/H" "depth / 4" curb height 0141 Galaxie Farm From Structure To Structure Catch. Area (ac) Runoff Coef Increment AC Accum. AC Total TOC (min) Total 10-yr Intensity (in/hr) Total 10-yr Flow (cfs) Up Invert Elev. Down Invert Elev. Pipe Length (ff) Invert Slope % Pipe Diameter (in) Pipe Capacity (cfs) Velocity MIS) Flow time Increment (min) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 F4 F3 0.43 0.67 0.29 0.29 5.00 6.81 1.95 480.00 479.00 149.64 0.670% 15 5.7 4.2 0.59 F3 F2 0.63 0.60 0.38 0.66 5.59 6.64 4.40 478.80 478.50 39.07 0.770/6 15 6.1 5.4 0.12 F2 F1' 29.79 0.33 7.80 8.46 23.50 3.83 34.59 478.30 477.00 114.73 1.13% 24 28.4 9.1 0.21 'Pipe is designed for pressure flow due to tailwater from BMP. See LD-347 Spreadsheet E9 E8 10.83 0.47 5.07 5.07 23.25 3.85 19.52 516.00 505.70 250.92 4.10% 18 23.0 14.6 0.29 E8A E8 0.47 0.72 0.34 0.34 5.00 6.81 2.30 506.00 505.70 28.02 1.070/6 15 7.3 5.2 0.09 E8 E7 0.92 0.59 0.54 5.95 23.53 3.82 22.74 505.50 492.00 161.72 8.350% 18 32.9 20.0 0.13 E7C E713 39.08 0.29 11.14 11.14 29.02 3.38 37.69 486.00 485.90 5.00 2.00% 36 102.2 15.3 0.01 E713 E7A 0.00 0.00 0.00 11.14 29.03 3.38 37.69 485.70 484.70 86.98 1.150% 36 77.5 12.4 0.12 EM E7 0.25 0.71 0.18 11.31 29.03 3.38 38.28 484.50 484.20 27.52 1.09% 36 75.4 12.1 0.04 E7 E6 0.46 0.60 0.27 17.54 29.16 3.37 59.17 484.00 475.50 254.33 3.340% 36 132.1 18.2 0.23 E6Z E6" '10 yr Flow from HydroCAD model 25.79 475.00 474.90 20.00 0.50% 36 51.1 7.9 0.04 E6A E6 0.41 0.72 0.29 0.29 5.00 6.81 2.00 477.70 477.00 30.08 2.33% 15 10.7 6.7 0.08 E6 E5 0.68 0.55 0.37 18.20 29.40 3.36 86.91 474.70 471.45 197.71 1.640/6 36 92.5 13.9 0.24 E5 E4 1.27 0.59 0.74 18.94 29.63 3.34 89.08 471.25 470.25 59.92 1.670% 36 93.4 10.2 0.10 E4A E4 0.15 0.78 0.11 0.11 5.00 6.81 2.78 470.60 470.25 26.52 1.32% 15 8.4 6.0 0.07 E4 E3 0.41 0.72 0.29 19.35 29.73 3.33 90.32 470.05 468.90 71.94 1.60% 36 91.4 10.4 0.12 E3 E2 0.00 0.00 0.00 21.39 29.85 3.33 96.96 468.70 468.10 74.43 0.81% 42 98.1 11.2 0.11 E2 E1 0.00 0.00 0.00 21.39 29.96 3.32 96.80 467.90 467.00 112.64 0.80% 42 97.5 11.8 0.16 D3 D2 1.19 0.51 0.61 0.61 5.00 6.81 4.16 469.00 468.20 61.01 1.31% 15 8.0 6.6 0.15 D2 D1 0.52 0.60 0.31 0.92 5.15 6.77 6.22 468.00 465.00 76.40 3.93% 15 13.9 11.0 0.12 C3 C2 0.29 0.82 0.24 0.24 5.00 6.81 1.62 463.00 462.70 31.95 0.94% 15 6.8 4.5 0.12 C2 C1 0.14 0.85 0.12 0.36 5.12 6.78 2.41 462.50 462.00 8.04 6.22% 15 17.5 10.0 0.01 B2 B1 338.08 0.43 144.02 144.02 67.6 2.27 326.65 462.70 460.50 64.00 3.44% (2) 60 418.64 x2 18.8 Note: B2-Bl Flow is 25 Yr Rational Flow. Culvert is adequate to also handle 25 Yr Regression Flow: Q= 348.4 cfs A2 Al 133.20 0.42 55.94 55.94 45.5 2.88 161.30 464.30 460.50 71.30 5.33% (2) 48 287.4 x2 19.0 Note: A2-A 1 Flow is 25 Yr Rational Flow. Culvert is adequate to also handle 25 Yr Regression Flow 0=190.5 cfs G4 G3'** 3.67 0.45 1.63 1.63 16.50 4.59 7.49 varies varies varies 1.380% 15 8.2 7.6 1.08 G1 E3 0.60 0.69 0.41 2.04 17.58 4.45 9.09 469.80 468.90 75.02 1.20% 18 13.6 8.3 0.15 " Calculates the worst -case scenario (shallowest slope & max runoff) for the private storm drain "G' Sewer. Min. slope for G drains=1.38% 4 Galaxie Farm LD-347 Hydraulic Grade Line Junction Loss Water 1 Ho O� Vi OiVi Hi Angle He H, 1.3'H, 0.5H, [InIst]Num;berE,StIUerlace Water Do Qo b S.o% Hr Final H Surface Elev. Rim Elev. 2 3 4 5 6 7 (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) 19 20 21 F2 481.30 2.00 34.59 114.73 1.992% 2.286 9.1 0.318 4.40 5.4 23.8 0.158 11 0.059 0.535 0.696 0.348 2.634 483.93 484.00 F3 483.93 1.25 4.40 39.07 0.395% 0.154 5.4 0.113 1.95 4.2 8.2 0.097 45 0.124 0.334 0.435 0.217 0.372 484.31 485.65 F4 484.31 1.25 1.95 149.64 0.0771/6 0.116 4.2 0.083 1.95 0.0 0.0 0.000 0 0.000 0.083 0.108 0.054 0.170 484.48 486.15 E2 469.80 3.50 96.80 112.64 0.789°/ 0.889 11.8 0.541 96.96 11.2 1086.0 0.682 90 1.363 2.586 1.293 2.182 471.98 479.24 E3 471.98 3.50 96.96 74.43 0.792% 0.589 11.2 0.487 90.32 10.4 939.3 0.588 75 1.058 2.133 1.066 1.656 473.64 476.35 E4 473.64 3.00 90.32 71.94 1.5631/6 1.124 10.4 0.420 89.08 10.2 910.4 0.568 25 0.487 1.474 0.737 1.861 475.50 477.12 E4A 475.50 1.25 2.78 26.52 0.158% 0.042 6.0 0.168 2.78 0.0 0.0 0.000 0 0.000 0.168 0.218 0.109 0.151 475.65 477.15 E5 475.65 3.00 89.08 59.92 1.520°/ 0.911 10.2 0.405 86.91 6.7 579.7 0.242 25 0.207 0.855 0.427 1.338 476.99 478.30 E6 476.99 3.00 86.91 197.71 1.447% 2.861 13.9 0.750 2.00 11.0 22.0 0.658 5 0.113 1.520 0.760 3.621 480.61 484.80 E6A 480.61 1.25 2.00 76.40 0.082'/, 0.062 11.0 0.564 2.00 0.0 0.0 0.000 0 0.000 0.564 0.733 0.366 0.429 481.04 484.74 E7 481.04 3.00 59.17 254.33 0.671% 1.706 18.2 1.286 38.28 12.1 463.2 0.796 85 1.523 3.605 4.686 2.343 4.049 485.09 498.54 EM 486.60 3.00 38.28 27.52 0.281 % 0.077 12.1 0.568 37.69 12.4 467.3 0.836 5 0.143 1.547 0.774 0.851 487.45 498.69 E7B 487.45 3.00 37.69 86.98 0.272% 0.237 12.4 0.597 37.69 15.3 576.7 1.272 50 1.817 3.687 1.843 2.080 489.53 489.60 E7C 489.53 3.00 37.69 5.00 0.272'/ 0.014 15.3 1.090 37.69 5.0 188.5 0.136 0 0.012 1.238 1.609 0.805 0.818 490.35 489.00 E8 493.20 1.50 22.74 161.72 3.996% 6.462 20.0 1.553 19.52 14.6 285.0 1.158 10 0.430 3.142 4.084 2.042 8.504 501.70 512.91 EBA 506.70 1.25 2.30 28.02 0.1080/6 0.030 5.2 0.105 2.30 0.0 0.0 0.000 0 0.000 0.105 0.136 0.068 0.099 506.80 512.98 E9 506.90 1.50 19.52 250.92 2.942% 7.383 14.6 0.993 19.52 0.0 0.0 0.000 0 0.000 0.993 1.291 0.645 8.029 514.93 520.50 G1 473.64 1.50 9.09 75.02 0.639% 0.479 8.3 0.267 7.49 7.6 57.0 0.314 40 0.386 0.967 1.257 0.629 1.108 474.75 475.22 'Outlet W SE is listed as the greater of either the calculated tailwater, or the invert out + 0.81D. Note: HGL not calculated for 15' pipes conveying less than 75% capacity. This includes Storm Sewers C, D, and G. Runoff Conditions do not warrant HGL analysis. 4X DESIGN OF OUTLET PROTECTION FROM A ROUND PIPE FLOWING FULL MINIMUM TAILWATER CONDITION (TM K 0.5 DIAMETER) 3 GALAXIE FARM OUTLET PROTECTION NOMOGRAPH GREEN BOOK FIG. 3.18-3 94 .- L I I 80 a Outlet `W Do + La P1Fe A 2 n n. Diameter, Do 1 4eet La w ter < 0.5D0 Po<o 60 CULVERT U ER 2 FDEPTH=18" LVERT B Ve�9�� 50 / =348/2 1. a =101 CFS 74 CFS{�{� I O a s D50=9", La=26 2" La=33 4 t - - —7 DEPTH=14 d I I �...i A •. t OUTLET E1 Q10=97 CFS (RATIONAL) D5o=9" La=27' DEPTH=14" BASIN OUTLET Q25=36 CFS (RATIONAL) D5o=8" La=21' DEPTH=12" Recommended min. dm-6• —y OUTLET D1 Q25=6.2 CFS (RATIONAL) 3 50— a— DEPTH=9" CiCS�IItTLn1�II•� •:.��q�{ �020 Discharqe. a =m a 93 4 3 GALAXIE FARM Orange cells need input, white cells are calculations. Basin I SB-1 Step 1: Preliminary Design Top of Data �.._., Downstream Toe of Data 472.0 Barrel length (ft) 90.0 Slope of principal spillway barrel (%) 2.5% Step 2: Calculate Runoff Rational Method Drainage Area (ac) _.. C 0.8 Iz 4.3 Iu 6.6 Qz (cfs) 23.2 Qu (cfs) 35.6 Step 3: Principal Spillway From Plate 3.� Spillway Capacity with emergency spillway (cfs)>.�• Riser Diameter (in) Actual head (ft) Qp (max) Step 4: Emergency Spillway From Tabs^ ? tar' Required spillway capacity 0.0 Hp 0.0 b - Bottom width (ft) 0 S - slope of exit channel (ft/fom) 0.00 X - minimum length of exit channel (f 0 Step 5: Omde Basin Design Parameters Maximum Top of wet Storage 475.0 Required Wet +Dry Storage (cy) 965 Wet Storage Required Volume (cy) 482 Requited Volume (cf) 13,025 Minimum Standpipe Invert 472.0 Cleanout Required Volume (cy) 238 Cleanout Max. Volume (cf) 6,415 Design Elevation A 470.0 Bottom of Wet Stomge 2 471.0 Cleanout Top of Wet Storage 473.0 5,184 Cleanout Volume (cf) 5,961 Wet Storage Volume (cf) 13,110 Wet Storage Volume (cy) 486 Dry Storage Required Volume (cy) 482 Required Volume let) 13,025 Maximum Top of Dry Storage 476.0 Design Elevation Area Bottom of Dry Top of Dry Storage Dry Storage Volume (cf) 475.0 13,128 Dry Storage Volume (cy) 486 Step 6: Final Details Upstream Toe of Data 470.0 Principle Spillway Elevation 475.0 Trash rack and anti -vortex device From Table Diameter (in) - Height (in) _ From Retention Basin Denman and Plate 3.14-B: Head on barrel (ft) 5.0 Qv (max) 39.0 Barrel diameter (in) Dewatering Orifice Design Riser Height 5.0 h (ft) 1.0 S let) 13,128 Q (cfs) 0.61 A (at) 0.126 d (ft) 0.401 Dewatering Orifice Diameter (in) 6 Flexible Tubing Diameter (in) 8 Baffle Calculation Length of Plow (L) (ft) Effective Width (W,) (ft) 30 L/W. 1.0 Baffles Required? yes 9D Post —Development Drainage Mapi 16,008 S� IMP ,/ /I*i*iIN,iMimiTI■i*iMi�,i�iiTii�i •��lf ii"M\wir �ai�iiri�iiL�i�y�r�i� MIKEiumiNirl��/ i — / Dominion CraneJN \ i 38,76�/SF IMP BIMTE / 7,8/47 S 1v FAIN U�7./ IVI / / Galaxie R;�id e 64,44 I \` \\ \ ��<� •I ICI � � �yi�i�i �� ■ � � � \\ —77 1,1 SF / I 80 0 80 160 240 SCALE: 1 "=80' , l ' I 'III I 01 Section 6. Pollution Prevention Plan. (reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4) A. Plan showing pollution activities and prevention practices Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County POLLUTION PREVENTION PLAN KEY svNaoE Ac1Nnv PaolEcnory MINGAGE CDNCREIE ® ICE. TNiD EMEN! WASIE smucrvaE Q aucnox sn,cco, PAINIIxG QFPNING DEvurealuG oPEaAnous N.IFRNL DsuvFar E sroaAGE ® DURINGMAUSE wawNG Paocrss ®souownsre DlsPosu Qswnury IwsE �� 4((1� WIG4;MNG YoPEaAnoxs © waw v,NiEns O mvip EDUIPAFN! lW$HIHG O $NPPP Nuunx GNSGE P�EuuGnxo P�PisrwuGE SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION CRS - X X 3.05 SILT FENCE SF 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE �D [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST ago 3.18 OUTLET PROTECTION OP TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING PS 3.35 MULCH DC 3.39 DUST CONTROL Zl SAFETY FENCE LIMITS OF DISTURBANCE IF IF i -- -- as IF 114 Y/ Way i m• 6 0 ip e h' I[d" / I---slo--{—' i T „d . ¢� EErvcE I bs 1 / � s 100 0 100 200 300 Scale: 1"=100' GRAVEL GALAXIE FARM UP02020--37 POLL U77ONPREVEA77ONPLAN 1 \ PAVING OPERATIONS (98 S ; / NOTE:O/L O{}{T ✓ — � � V A PROTICT NI&6fi /„n,: k . ,•CRT' J��T s \\ YO-TH `l—n - J ARM i II / 4 -PORTAJOHNS, TRASH,.. "-- R—F—x-- 51--- / i r AND RISNE SUPPLY SEDIMENT / "GAVATEE 0 ITEM�_I -. BASIN s. r ---- YAVING COkC[tETE OPERATIONS ' )PERATIONS '^w---- - - --— e P I W4 FUEL CONTAINMENT SIZING. PAVING ESTIMATED FUEL TANK: 200 GAL=27 CF OPERATIONS LAY PVC IMPERMEABLE LINER ON TOP SUPPORTED BY HAY BALES TO CREATE CONTAINMENT. MAX CONTAINMENT DEPTH=1.5'. BASE FOOTPRINT: 4'x8'=32SF. AT 0.9' HEIGHT OF FUEL STORAGE, BASE STORAGE VOLUME= 29 CF. 1.1 x 10-YR RAIN DEPTH=1.1x5.6"=0.51' FINAL FUEL CONTAINMENT SIZE: 4'Wx8'Lx1.5'D NOTE: CONTRACTOR CAN RELOCATE POLLUTION PREVENTION ITEMS, BUT MUST MARK UP DRAWINGS WITH UPDATED LOCATION. LIMITS OF DISTURBANCE TO BE FIELD \RKED WITH WHITE FLAGS OR WHITE PAINT IMPORTS MUST BE NOTED IN THE SWPPP GRADING LOG. / RESERVED / soaEs / 1 / / I T / I ue / i i EXCAVATE 2' TRAPPINtLEAREA, - Ii FOR WASH RACK / )e i �i♦ i PAVING ! OPERATIONS / PAVED CONSTRUCTION ENTRANCE W. SPRAY WASH j SWPPP MAILBOX SPILL KIT GAGE STATION CONTRACTOR SHALL MARK LOCATION OF COVERED DUMPSTERS AND BUILDING MATERIALS (INCLUDING PAINT AND SOLVENTS) WITHIN THE LIMITS OF DISTURBANCE AS NEEDED. ALL POLLUTANTS SHALL BE PREVENTED FROM ENTERING WATERWAYS. EXCERCISE EXTRA CAUTION NEAR LIVE STREAM (COW BRANCH) POLLUTION PREVENTION PLAN KEY svNaoL nclrvm PaoiEcnory MINGRGE CDNCREIE ® ICE. TNiD EMEN! wnsiE smucrvaE Q sn,cco, MO, PUN11xG f.IFPNING DEvu oPEannous .$ E.vFaYMO E sroaneE ® MPlE0.L4LU5E DualNs wawNs Paocrss ®ouownsre DlsPosu Q swI— vwsE �� YoPEannoxs © waw vuiEns 4i111wENID IS-'P\ EDUIPAFN! lW$HIHG O $NFPP xulunrz ONSIIE NEuxsnxD P�PisrwucE 24 SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION CRS — X X 3.05 SILT FENCE SF 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE �D [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST ago 3.18 OUTLET PROTECTION OP TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING PS 3.35 MULCH DC 3.39 DUST CONTROL Zl SAFETY FENCE LIMITS OF DISTURBANCE An, OPERATIONS ■�■Ilia „ummm . II& •• 4� ���I '•p � �� • xl � y1 � 3 r .1 JI�� 'r J4 � IN - �►` �•� Tom.. Min 5, inNNA � Iy cx —_ ...:��� ,, Imo\ �7 U1 ` ' "'°'+��. � ►1 soy � � 111�9�§ �,��,l® \� � � .. _ �x�.rw*� �i � •`-RR.KA uY __ .fir -,...ems. .� _qq�'.—�L""r':�`a��.�elii w�Ci �.= •�. I� •"_J/(/jjj 9E .0 � ��� ,� Irx��. I/ �� • Mi1�xp ;� ��•'3�i0 ��[b Wit.. 11��Y�6•® ��� �� �'.S �'� 2 Fu Irl� , FUEL CONTAINMENT SIZING. PAVING OPERATIONS 00 1 100 200 300 11 LAY PVC IMPERMEABLE LINER ON TOP SUPPORTED BY HAY BALES TO CREATE CONTAINMENT. MAX CONTAINMENT DEPTH=1.5'. BASE FOOTPRINT: 4'x8'=32SF. AT 0.9' HEIGHT OF FUEL STORAGE, BASE STORAGE VOLUME= 29 CF. 1.1 x 10—YR RAIN DEPTH=1.1x5.6"=0.51' FINAL FUEL CONTAINMENT SIZE: 4'Wx8'Lx1.5'D GAL"EFARM "02020--37 P0LLU7I0NPREVEN770NPLAN2 TSEDIMENT BASIN m NOTE: CONTRACTOR CAN RELOCATE POLLUTION PREVENTION ITEMS, BUT MUST MARK UP DRAWINGS WITH UPDATED LOCATION. LIMITS OF DISTURBANCE TO BE FIELD \RKED WITH WHITE FLAGS OR WHITE PAINT IMPORTS MUST BE NOTED IN THE SWPPP GRADING LOG. RESERVED , SLOPES , / TIONS,,1�& PoLEo Y '•" OPERATIONS PAVED CONSTRUCTION ENTRANCE W. SPRAY WASH SWPPP MAILBOX o`�&4h AIN GAGE CONTRACTOR SHALL MARK LOCATION OF COVERED DUMPSTERS AND BUILDING MATERIALS (INCLUDING PAINT AND SOLVENTS) WITHIN THE LIMITS OF DISTURBANCE AS NEEDED. ALL POLLUTANTS SHALL BE PREVENTED FROM ENTERING WATERWAYS. EXCERCISE EXTRA CAUTION NEAR LIVE STREAM (COW BRANCH) B. z5ources of rouutants, iocanons, ana prevention pracrices Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures C. Sources of Pollutants continued. Common activities and minimum control and prevention practices Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Follow Erosion and Sediment Control Clearing, grading, excavating, and on- Land disturbance area Plan. Dispose of clearing debris at stabilized areas acceptable disposal sites. Seed and mulch, or sod within 7 days of land cleann Cover storm drain inlets and use drip pans Paving operations Roads and driveways and absorbentloil dry for all paving machines to limit leaks ands ills Direct concrete wash water into a leak - Concrete washout and Current location and detail shown on proof container or leak -proof settling basin cement waste plan that is designed so that no overflows can occur Enclose or cover material storage areas. Mix paint indoors in a containment area or Structure construction, stucco, Structures in a flat unpaved area. Prevent the painting, and cleaning discharge of soaps, solvents, detergents and wash water, paint, form release oils and curing compounds. Water shall be filtered, settled or similarly Dewatering operations Dewatering sites shown on plan treated prior to discharge as shown on plan. Designated areas for material delivery and Material delivery and storage Designated area shown on plan storage. Placed near construction entrances, away from waterways and drainage paths Material use during building process Building areas Follow manufacturer's instructions. MSDS's attached. Waste collection area will not receive a substantial amount of runoff from upland areas and does not drain directly to a Current designated container areas on waterway. Containers have lids covered Solid waste disposal I plan I before periods of rain, or are in a covered Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures area. Scheduled collection to prevent overfilling. MATERIALS NOT TO BE BURIED ON -SITE Convenient and well -maintained portable sanitary facilities will be provided, and Sanitary waste Current locations shown on plan located away from waterways or inlets. Such facilities shall be regularly maintained. Apply fertilizers in accordance with Landscaping operations Landscape areas shown on plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better Wash Waters W Wash areas shown on plan control as specified on plan. Minimize the discharge of pollutants from equipment and vehicle washing Vehicle and equipment washing Designated areas and details shown on Provide containment and filtering for all plan wash waters per the plan Minimization of exposure to precipitation and stormwater. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, and other materials present on the site to precipitation and to stormwater. (Identify all non-stormwater discharges to occur on your site. Keep this plan up-to-date with ongoing site changes and inspections. See CGP, 9VAC25-880-70 section E for examples of non-stormwater discharges.) D. Discharge Pollutants or Pollutant Location on Site Constituents Dust Control Treatment I chemicals Designated areas and details shown on E. Persons responsible for pollution prevention practices Blackbird of Charlottesville LLC Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Contact: Nicole Scro 912 East High St Charlottesville, VA 22902 631-513-5480 F. Response and reporting practices Minimize discharges from spills and leaks. Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures as follows. To the extent practical, do not store oils, chemicals, or other potential contaminants on site. When storage of potential contaminants is required, provide secondary containment, such as spill berms or spill containment pallets. These should be located within the drainage areas to a sediment trap or sediment basin. Direct concrete wash water into a settling basin, dispose of hardened concrete with other construction waste debris to an appropriate waste facility. Respond to all spills, leaks and discharges as follows. Spills of oil, petroleum products, sanitary wastes, and substances listed under 40 CFR parts 110, 117, and 302 should be cleaned up as soon as possible while protecting worker safety. Construct an earthen dike around any spills on dirt to prevent spreading. If a spill occurs during rainfall, cover it with a tarp or another impermeable cover to prevent contaminating runoff. Do not bury any spills or wash them with water. Maintain a spill kits in a readily accessible location. A spill kit shall consist of a lined drum with bags of universal sorbents in the bottom, accessible without tipping the drum, sorbent socks above the bags, and personal protective equipment on the top. All materials used to remove the contaminants, including any water used to rinse equipment, and all dirt removed must be treated as contaminated. Textiles, such as from coveralls, may be sent to a certified laundry facility. Waste must be disposed of according to the standards of Albemarle County and the Commonwealth of Virginia. Store hazardous materials and wastes in covered containers. Report all spills, leaks and discharges as follows: All spills, leaks, and discharges shall be recorded in the inspection logs. If construction activity results in a discharge of contaminants that may be reasonably expected to enter surface waters, the operator shall notify the Department of Environmental Quality immediately or within 24 hours, and shall submit a written report within five days. For significant spills that cannot be controlled by personnel in the immediate vicinity, notify the local emergency response by dialing 911. Albemarle County must also be notified, and potentially some of the following agencies: the Fire Department, the Public Works Department, the Coast Guard, the Highway Patrol, the County Police Department, Department of Toxic Substances, OSHA, etc. For spills of federal reportable quantities, in conformance with the requirements in 40 CFR parts 110, 119, and 302, the contractor should notify the National Response Center at (800) 424-8802. G. Pollution Prevention Awareness The engineer, project superintendent, and contractor shall have weekly meetings to review on -site conditions and advise contractor of potential risks that should be addressed. Contractor will be responsible for following procedures on a daily basis and applying appropriate waste management and prevention practices to be in compliance with the conditions of the general permit. Employees shall be informed of the danger to nature and to human health of various chemical spills. Section 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Water discharges into an impaired water: Moores Creek. Moores Creek was listed as impaired due to Benthic- Macroinvertebrate Bioassessments for E-Coli and Fecal Coliforms. Site work shall be in compliance with the following requirements: 1. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; 2. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and 3. In accordance with Part I B 4 and Part I B 5, inspections shall be conducted as follows: I. Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and II. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. Section 8. Qualified personnel The following personnel are responsible for inspections: Justin Shimp, PE Lic. No. 45183 912 East High St Charlottesville, VA 22903 Additional Inspectors To Be Determined. The Operator or duly authorized representative may serve as the qualified personnel. This may include delegating this responsibility to other contractors as they become involved with the project. The SWPPP will be updated when contractor is hired. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 9. Signed Certification CERTIFICATION "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Owner/Operator Name: Nicole Scro, Manager Company: Blackbird of Charlottesville LLC Title: Signature: A /r n 1 Uy i �-� YL,-� Date: Q�Z2%2 2 i0 Section 10. Delegation of authority. Issued - 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 10. Delegation of authority. Delegation of Authority I, (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the Galaxie Farm construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state, zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in the Construction General Permit (CGP), and that the designee above meets the definition of a "duly authorized representative". Operator Name: Company: Title: Signature: Date: Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 11. General permit copy Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY General Permit No.: VAR10 Effective Date: July 1, 2019 Expiration Date: June 30, 2024 GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA STORMWATER MANAGEMENT PROGRAM AND THE VIRGINIA STORMWATER MANAGEMENT ACT In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the Virginia Stormwater Management Act and regulations adopted pursuant thereto, operators of construction activities are authorized to discharge to surface waters within the boundaries of the Commonwealth of Virginia, except those specifically named in State Water Control Board regulations that prohibit such discharges. The authorized discharge shall be in accordance with the registration statement filed with the Department of Environmental Quality, this cover page, Part I - Discharge Authorization and Special Conditions, Part II - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth in this general permit. Construction General Permit Effective July 1, 2019 Page 2 of 26 10M.T 1 DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. During the period beginning with the date of coverage under this general permit and lasting until the general permit's expiration date, the operator is authorized to discharge stormwater from construction activities. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that: a. The support activity is directly related to the construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; b. The support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; c. The support activity does not operate beyond the completion of the last construction activity it supports; d. The support activity is identified in the registration statement at the time of general permit coverage; e. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and f. All applicable state, federal, and local approvals are obtained for the support activity. B. Limitations on coverage. 1. Post -construction discharges. This general permit does not authorize stormwater discharges that originate from the site after construction activities have been completed and the site, including any support activity sites covered under the general permit registration, has undergone final stabilization. Post -construction industrial stormwater discharges may need to be covered by a separate VPDES permit. Discharges mixed with nonstormwater. This general permit does not authorize discharges that are mixed with sources of nonstormwater, other than those discharges that are identified in Part I E (Authorized nonstormwater discharges) and are in compliance with this general permit. Discharges covered by another state permit. This general permit does not authorize discharges of stormwater from construction activities that have been covered under an individual permit or required to obtain coverage under an alternative general permit. Page 3 of 26 4. Impaired waters and total maximum daily load (TMDL) limitation. Nutrient and sediment impaired waters. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit for (i) sediment or a sediment -related parameter (i.e., total suspended solids or turbidity) or (ii) nutrients (i.e., nitrogen or phosphorus) are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a stormwater pollution prevention plan (SWPPP) in accordance with Part II B 5 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations and implements an inspection frequency consistent with Part II G 2 a. Polychlorinated biphenyl (PCB) impaired waters. Discharges of stormwater from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit for PCB are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 6 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations, and implements an inspection frequency consistent with Part II G 2 a. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit effective on July 1, 2014, to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 7 of this permit and implements an inspection frequency consistent with Part II G 2 a. 6. There shall be no discharge of floating solids or visible foam in other than trace amounts C. Commingled discharges. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, 1 C, and I E, all discharges covered by this general permit shall be composed entirely of stormwater associated with construction activities. All other discharges including the following are prohibited: 1. Wastewater from washout of concrete; 2. Wastewater from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; Page 4 of 26 3. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; 4. Oils, toxic substances, or hazardous substances from spills or other releases; and 5. Soaps, solvents, or detergents used in equipment and vehicle washing. E. Authorized nonstormwater discharges. The following nonstormwater discharges from construction activities are authorized by this general permit when discharged in compliance with this general permit: 1. Discharges from firefighting activities; 2. Fire hydrant flushings; 3. Waters used to wash vehicles or equipment where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 4. Water used to control dust that has been filtered, settled, or similarly treated prior to discharge; 5. Potable water sources, including uncontaminated waterline flushings, managed in a manner to avoid an instream impact; 6. Routine external building wash down where soaps, solvents or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (or where all spilled or leaked material has been removed prior to washing); where soaps, solvents, or detergents have not been used; and where the wash water has been filtered, settled, or similarly treated prior to discharge; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering, including dewatering of trenches and excavations that have been filtered, settled, or similarly treated prior to discharge; and 12. Landscape irrigation. F. Termination of general permit coverage. 1. The operator of the construction activity shall submit a notice of termination in accordance with 9VAC25-880-60, unless a registration statement was not required to be submitted in accordance with 9VAC25-880-50 A 1 c or A 2 b for single-family detached residential structures, to the VSMP authority after one or more of the following conditions have been met: Page 5 of 26 a. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator has operational control. When applicable, long term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a complete and accurate notice of termination and the construction record drawing prepared; b. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; c. Coverage under an alternative VPDES or state permit has been obtained; or d. For individual lots in residential construction only, final stabilization as defined in 9VAC25- 880-1 has been completed, including providing written notification to the homeowner and incorporating a copy of the notification and signed certification statement into the SWPPP, and the residence has been transferred to the homeowner. The notice of termination shall be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection is met. 3. Termination of authorization to discharge for the conditions set forth in subdivision 1 a of this subsection shall be effective upon notification from the department that the provisions of subdivision 1 a of this subsection have been met or 60 days after submittal of a complete and accurate notice of termination in accordance with 9VAC25-880-60 C, whichever occurs first. 4. Authorization to discharge terminates at midnight on the date that the notice of termination is submitted for the conditions set forth in subdivisions 1 b through 1 d of this subsection unless otherwise notified by the VSMP authority or department. 5. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator shall select, install, implement, and maintain control measures as identified in the SWPPP at the construction site that minimize pollutants in the discharge as necessary to ensure that the operator's discharge does not cause or contribute to an excursion above any applicable water quality standard. If it is determined by the department that the operator's discharges are causing, have reasonable potential to cause, or are contributing to an excursion above any applicable water quality standard, the department, in consultation with the VSMP authority, may take appropriate enforcement action and require the operator to: a. Modify or implement additional control measures in accordance with Part II C to adequately address the identified water quality concerns; b. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or Page 6 of 26 c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter shall include a signed certification consistent with Part III K. STORMWATER POLLUTION PREVENTION PLAN A. Stormwater pollution prevent plan. A stormwater pollution prevention plan (SWPPP) shall be developed prior to the submission of a registration statement and implemented for the construction activity, including any support activity, covered by this general permit. SWPPPs shall be prepared in accordance with good engineering practices. Construction activities that are part of a larger common plan of development or sale and disturb less than one acre may utilize a SWPPP template provided by the department and need not provide a separate stormwater management plan if one has been prepared and implemented for the larger common plan of development or sale. The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other plans such as a spill prevention control and countermeasure (SPCC) plan developed for the site under § 311 of the federal Clean Water Act or best management practices (BMP) programs otherwise required for the facility provided that the incorporated plan meets or exceeds the SWPPP requirements of Part II B. All plans incorporated by reference into the SWPPP become enforceable under this general permit. If a plan incorporated by reference does not contain all of the required elements of the SWPPP, the operator shall develop the missing elements and include them in the SWPPP. 3. Any operator that was authorized to discharge under the general permit effective July 1, 2014, and that intends to continue coverage under this general permit, shall update its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. B. Contents. The SWPPP shall include the following items: 1. General information. a. A signed copy of the registration statement, if required, for coverage under the general VPDES permit for discharges of stormwater from construction activities; b. Upon receipt, a copy of the notice of coverage under the general VPDES permit for discharges of stormwater from construction activities (i.e., notice of coverage letter); c. Upon receipt, a copy of the general VPDES permit for discharges of stormwater from construction activities; d. A narrative description of the nature of the construction activity, including the function of the project (e.g., low density residential, shopping mall, highway, etc.); e. A legible site plan identifying: Page 7 of 26 (1) Directions of stormwater flow and approximate slopes anticipated after major grading activities; (2) Limits of land disturbance including steep slopes and natural buffers around surface waters that will not be disturbed; (3) Locations of major structural and nonstructural control measures, including sediment basins and traps, perimeter dikes, sediment barriers, and other measures intended to filter, settle, or similarly treat sediment, that will be installed between disturbed areas and the undisturbed vegetated areas in order to increase sediment removal and maximize stormwater infiltration; (4) Locations of surface waters; (5) Locations where concentrated stormwater is discharged; (6) Locations of any support activities, including (i) areas where equipment and vehicle washing, wheel wash water, and other wash water is to occur; (ii) storage areas for chemicals such as acids, fuels, fertilizers, and other lawn care chemicals; (iii) concrete wash out areas; (iv) vehicle fueling and maintenance areas; (v) sanitary waste facilities, including those temporarily placed on the construction site; and (vi) construction waste storage; and (7) When applicable, the location of the on -site rain gauge or the methodology established in consultation with the VSMP authority used to identify measurable storm events for inspection as allowed by Part II G 2 a (1) (ii) or Part II G 2 b (2). Erosion and sediment control plan. a. An erosion and sediment control plan designed and approved in accordance with the Virginia Erosion and Sediment Control Regulations (9VAC25-840), an "agreement in lieu of a plan" as defined in 9VAC25-840-10 from the VESCP authority, or an erosion and sediment control plan prepared in accordance with annual standards and specifications approved by the department. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. An approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department -approved annual standards and specifications, implemented to: (1) Control the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Control stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; Page 8 of 26 (3) Minimize the amount of soil exposed during the construction activity; (4) Minimize the disturbance of steep slopes; (5) Minimize sediment discharges from the site in a manner that addresses (i) the amount, frequency, intensity, and duration of precipitation; (ii) the nature of resulting stormwater runoff; and (iii) soil characteristics, including the range of soil particle sizes present on the site; (6) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas to increase sediment removal, and maximize stormwater infiltration, unless infeasible; (7) Minimize soil compaction and, unless infeasible, preserve topsoil; (8) Ensure initiation of stabilization activities, as defined in 9VAC25-880-1, of disturbed areas immediately whenever any clearing, grading, excavating, or other land - disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 days; and (9) Utilize outlet structures that withdraw stormwater from the surface (i.e., above the permanent pool or wet storage water surface elevation), unless infeasible, when discharging from sediment basins or sediment traps. 3. Stormwater management plan. a. Except for those projects identified in Part II B 3 b, a stormwater management plan approved by the VSMP authority as authorized under the Virginia Stormwater Management Program (VSMP) Regulation (9VAC25-870), or an "agreement in lieu of a stormwater management plan" as defined in 9VAC25-870-10 from the VSMP authority, or a stormwater management plan prepared in accordance with annual standards and specifications approved by the department. b. For any operator meeting the conditions of 9VAC25-870-47 B of the VSMP regulation, an approved stormwater management plan is not required. In lieu of an approved stormwater management plan, the SWPPP shall include a description of, and all necessary calculations supporting, all post -construction stormwater management measures that will be installed prior to the completion of the construction process to control pollutants in stormwater discharges after construction operations have been completed. Structural measures should be placed on upland soils to the degree possible. Such measures must be designed and installed in accordance with applicable VESCP authority, VSMP authority, state, and federal requirements, and any necessary permits must be obtained. Pollution prevention plan. A pollution prevention plan that addresses potential pollutant - generating activities that may reasonably be expected to affect the quality of stormwater discharges from the construction activity, including any support activity. The pollution prevention plan shall: a. Identify the potential pollutant -generating activities and the pollutant that is expected to be exposed to stormwater; Page 9 of 26 b. Describe the location where the potential pollutant -generating activities will occur, or if identified on the site plan, reference the site plan; c. Identify all nonstormwater discharges, as authorized in Part I E of this general permit, that are or will be commingled with stormwater discharges from the construction activity, including any applicable support activity; d. Identify the person responsible for implementing the pollution prevention practice or practices for each pollutant -generating activity (if other than the person listed as the qualified personnel); e. Describe the pollution prevention practices and procedures that will be implemented to: (1) Prevent and respond to leaks, spills, and other releases including (i) procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other releases; and (ii) procedures for reporting leaks, spills, and other releases in accordance with Part III G; (2) Prevent the discharge of spilled and leaked fuels and chemicals from vehicle fueling and maintenance activities (e.g., providing secondary containment such as spill berms, decks, spill containment pallets, providing cover where appropriate, and having spill kits readily available); (3) Prevent the discharge of soaps, solvents, detergents, and wash water from construction materials, including the clean-up of stucco, paint, form release oils, and curing compounds (e.g., providing (i) cover (e.g., plastic sheeting or temporary roofs) to prevent contact with stormwater; (ii) collection and proper disposal in a manner to prevent contact with stormwater; and (iii) a similarly effective means designed to prevent discharge of these pollutants); (4) Minimize the discharge of pollutants from vehicle and equipment washing, wheel wash water, and other types of washing (e.g., locating activities away from surface waters and stormwater inlets or conveyance and directing wash waters to sediment basins or traps, using filtration devices such as filter bags or sand filters, or using similarly effective controls); (5) Direct concrete wash water into a leak -proof container or leak -proof settling basin. The container or basin shall be designed so that no overflows can occur due to inadequate sizing or precipitation. Hardened concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wastes. Liquid concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wash waters and shall not be discharged to surface waters; (6) Minimize the discharge of pollutants from storage, handling, and disposal of construction products, materials, and wastes including (i) building products such as asphalt sealants, copper flashing, roofing materials, adhesives, and concrete admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape Page 10 of 26 materials; and (iii) construction and domestic wastes such as packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, Styrofoam, concrete, and other trash or building materials; (7) Prevent the discharge of fuels, oils, and other petroleum products, hazardous or toxic wastes, waste concrete, and sanitary wastes; (8) Address any other discharge from the potential pollutant -generating activities not addressed above; (9) Minimize the exposure of waste materials to precipitation by closing or covering waste containers during precipitation events and at the end of the business day, or implementing other similarly effective practices. Minimization of exposure is not required in cases where the exposure to precipitation will not result in a discharge of pollutants; and f. Describe procedures for providing pollution prevention awareness of all applicable wastes, including any wash water, disposal practices, and applicable disposal locations of such wastes, to personnel in order to comply with the conditions of this general permit. The operator shall implement the procedures described in the SWPPP. SWPPP requirements for discharges to nutrient and sediment impaired waters. For discharges to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for sediment for a sediment - related parameter (i.e., total suspended solids or turbidity) or nutrients (i.e., nitrogen or phosphorus), the operator shall: a. Identify the impaired waters, approved TMDLs, and pollutants of concern in the SWPPP; and b. Provide clear direction in the SWPPP that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part II G 2 a. SWPPP requirements for discharges to polychlorinated biphenyl (PCB) impaired waters. For discharges from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for PCB, the operator shall: Page 11 of 26 a. Identify the impaired waters, approved TMDLs, and pollutant of concern in the SWPPP; b. Implement the approved erosion and sediment control plan in accordance with Part II B 2; c. Dispose of waste materials in compliance with applicable state, federal, and local requirements; and d. Implement a modified inspection schedule in accordance with Part II G 2 a. 7. SWPPP requirements for discharges to exceptional waters. For discharges to surface waters identified in 9VAC25-260-30 A 3 c as an exceptional water, the operator shall: a. Identify the exceptional surface waters in the SWPPP; and b. Provide clear direction in the SWPPP that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part II G 2 a. 8. Identification of qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 9. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 10. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. C. SWPPP amendments, modification, and updates. 1. The operator shall amend the SWPPP whenever there is a change in the design, construction, operation, or maintenance that has a significant effect on the discharge of pollutants to surface waters and that has not been previously addressed in the SWPPP. The SWPPP shall be amended if, during inspections or investigations by the operator's qualified personnel, or by local, state, or federal officials, it is determined that the existing control measures are ineffective in minimizing pollutants in discharges from the construction activity. Revisions to the SWPPP shall include additional or modified control measures designed and implemented to correct problems identified. If approval by the VESCP authority, VSMP authority, or department is necessary for the control measure, revisions to the SWPPP shall be completed no later than seven calendar days following approval. Implementation of these additional or modified control measures shall be accomplished as described in Part II H. Page 12 of 26 3. The SWPPP shall clearly identify the contractors that will implement and maintain each control measure identified in the SWPPP. The SWPPP shall be amended to identify any new contractor that will implement and maintain a control measure. 4. The operator shall update the SWPPP as soon as possible but no later than seven days following any modification to its implementation. All modifications or updates to the SWPPP shall be noted and shall include the following items: a. A record of dates when: (1) Major grading activities occur; (2) Construction activities temporarily or permanently cease on a portion of the site; and (3) Stabilization measures are initiated; b. Documentation of replaced or modified controls where periodic inspections or other information have indicated that the controls have been used inappropriately or incorrectly and were modified; c. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; d. All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property; e. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; f. Measures taken to prevent the reoccurrence of any prohibited discharge; and g. Measures taken to address any evidence identified as a result of an inspection required under Part II G. 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. D. Public notification. Upon commencement of land disturbance, the operator shall post conspicuously a copy of the notice of coverage letter near the main entrance of the construction activity. For linear projects, the operator shall post the notice of coverage letter at a publicly accessible location near an active part of the construction project (e.g., where a pipeline crosses a public road). The operator shall maintain the posted information until termination of general permit coverage as specified in Part I F. E. SWPPP availability. 1. Operators with day-to-day operational control over SWPPP implementation shall have a copy of the SWPPP available at a central location on -site for use by those identified as having responsibilities under the SWPPP whenever they are on the construction site. Page 13 of 26 The operator shall make the SWPPP and all amendments, modifications, and updates available upon request to the department, the VSMP authority, the EPA, the VESCP authority, local government officials, or the operator of a municipal separate storm sewer system receiving discharges from the construction activity. If an on -site location is unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's location shall be posted near the main entrance of the construction site. The operator shall make the SWPPP available for public review in an electronic format or in hard copy. Information for public access to the SWPPP shall be posted and maintained in accordance with Part II D. If not provided electronically, public access to the SWPPP may be arranged upon request at a time and at a publicly accessible location convenient to the operator or his designee but shall be no less than once per month and shall be during normal business hours. Information not required to be contained within the SWPPP by this general permit is not required to be released. F. SWPPP implementation. The operator shall implement the SWPPP and subsequent amendments, modifications, and updates from commencement of land disturbance until termination of general permit coverage as specified in Part I F. All control measures shall be properly maintained in effective operating condition in accordance with good engineering practices and, where applicable, manufacturer specifications. If a site inspection required by Part II G identifies a control measure that is not operating effectively, corrective actions shall be completed as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority, to maintain the continued effectiveness of the control measures. If site inspections required by Part II G identify an existing control measure that needs to be modified or if an additional or alternative control measure is necessary for any reason, implementation shall be completed prior to the next anticipated measurable storm event. If implementation prior to the next anticipated measurable storm event is impracticable, then additional or alternative control measures shall be implemented as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority. G. SWPPP Inspections. 1. Personnel responsible for on -site and off -site inspections. Inspections required by this general permit shall be conducted by the qualified personnel identified by the operator in the SWPPP. The operator is responsible for ensuring that the qualified personnel conduct the inspection. 2. Inspection schedule. a. For construction activities that discharge to a surface water identified in Part 11 B 5 and B 6 as impaired or having an approved TMDL or Part I B 7 as exceptional, the following inspection schedule requirements apply: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 24 hours following a measurable storm event. In the event that a measurable storm event occurs when Page 14 of 26 there are more than 24 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections as authorized in Part II G 2 d shall not be allowed. b. Except as specified in Part II G 2 a, inspections shall be conducted at a frequency of: (1) At least once every five business days; or (2) At least once every 10 business days and no later than 24 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 24 hours between business days, the inspection shall be conducted on the next business day. c. Where areas have been temporarily stabilized or land -disturbing activities will be suspended due to continuous frozen ground conditions and stormwater discharges are unlikely, the inspection frequency described in Part II G 2 a and 2 b may be reduced to once per month. If weather conditions (such as above freezing temperatures or rain or snow events) make discharges likely, the operator shall immediately resume the regular inspection frequency. d. Except as prohibited in Part II G 2 a (2), representative inspections may be utilized for utility line installation, pipeline construction, or other similar linear construction activities provided that: (1) Temporary or permanent soil stabilization has been installed and vehicle access may compromise the temporary or permanent soil stabilization and potentially cause additional land disturbance increasing the potential for erosion; (2) Inspections occur on the same frequency as other construction activities; (3) Control measures are inspected along the construction site 0.25 miles above and below each access point (i.e., where a roadway, undisturbed right-of-way, or other similar feature intersects the construction activity and access does not compromise temporary or permanent soil stabilization); and (4) Inspection locations are provided in the inspection report required by Part II G. e. If adverse weather causes the safety of the inspection personnel to be in jeopardy, the inspection may be delayed until the next business day on which it is safe to perform the inspection. Any time inspections are delayed due to adverse weather conditions, evidence of the adverse weather conditions shall be included in the SWPPP with the dates of occurrence. 3. Inspection requirements. a. As part of the inspection, the qualified personnel shall: (1) Record the date and time of the inspection and, when applicable, the date and rainfall amount of the last measurable storm event; Page 15 of 26 (2) Record the information and a description of any discharges occurring at the time of the inspection or evidence of discharges occurring prior to the inspection; (3) Record any land -disturbing activities that have occurred outside of the approved erosion and sediment control plan; (4) Inspect the following for installation in accordance with the approved erosion and sediment control plan, identification of any maintenance needs, and evaluation of effectiveness in minimizing sediment discharge, including whether the control has been inappropriately or incorrectly used: (a) All perimeter erosion and sediment controls, such as silt fence; (b) Soil stockpiles, when applicable, and borrow areas for stabilization or sediment trapping measures; (c) Completed earthen structures, such as dams, dikes, ditches, and diversions for stabilization and effective impoundment or flow control; (d) Cut and fill slopes; (e) Sediment basins and traps, sediment barriers, and other measures installed to control sediment discharge from stormwater; (f) Temporary or permanent channels, flumes, or other slope drain structures installed to convey concentrated runoff down cut and fill slopes; (g) Storm inlets that have been made operational to ensure that sediment laden stormwater does not enter without first being filtered or similarly treated; and (h) Construction vehicle access routes that intersect or access paved or public roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days to ensure: (a) Initiation of stabilization activities have occurred immediately, as defined in 9VAC25-880-1; and (b) Stabilization activities have been completed within seven days of reaching grade or stopping work; (6) Inspect for evidence that the approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department -approved annual standards and specifications has not been properly implemented. This includes: Page 16 of 26 (a) Concentrated flows of stormwater in conveyances such as rills, rivulets, or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; (b) Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; (c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediment controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; (d) Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; (e) Required stabilization has not been initiated or completed or is not effective on portions of the site; (f) Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; (g) Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and (h) Land disturbance or sediment deposition outside of the approved area to be disturbed; (7) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance, and effectiveness of the procedures and practices; (8) Identify any pollutant generating activities not identified in the pollution prevention plan; and (9) Identify and document the presence of any evidence of the discharge of pollutants prohibited by this general permit. 4. Inspection report. Each inspection report shall include the following items: a. The date and time of the inspection and, when applicable, the date and rainfall amount of the last measurable storm event; b. Summarized findings of the inspection; c. The locations of prohibited discharges; d. The locations of control measures that require maintenance; Page 17 of 26 e. The locations of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The locations where any evidence identified under Part II G 3 a (6) exists; g. The locations where any additional control measure is needed; h. A list of corrective actions required (including any changes to the SWPPP that are necessary) as a result of the inspection or to maintain permit compliance; i. Documentation of any corrective actions required from a previous inspection that have not been implemented; and The date and signature of the qualified personnel and the operator or its duly authorized representative. 5. The inspection report shall be included into the SWPPP no later than four business days after the inspection is complete. The inspection report and any actions taken in accordance with Part II shall be retained by the operator as part of the SWPPP for at least three years from the date that general permit coverage expires or is terminated. The inspection report shall identify any incidents of noncompliance. Where an inspection report does not identify any incidents of noncompliance, the report shall contain a certification that the construction activity is in compliance with the SWPPP and this general permit. The report shall be signed in accordance with Part III K of this general permit. H. Corrective actions. The operator shall implement the corrective actions identified as a result of an inspection as soon as practicable but no later than seven days after discovery or a longer period as approved by the VSMP authority. If approval of a corrective action by a regulatory authority (e.g., VSMP authority, VESCP authority, or the department) is necessary, additional control measures shall be implemented to minimize pollutants in stormwater discharges until such approvals can be obtained. The operator may be required to remove accumulated sediment deposits located outside of the construction activity covered by this general permit as soon as practicable in order to minimize environmental impacts. The operator shall notify the VSMP authority and the department as well as obtain all applicable federal, state, and local authorizations, approvals, and permits prior to the removal of sediments accumulated in surface waters including wetlands. Page 18 of 26 PART III CONDITIONS APPLICABLE TO ALL VPDES PERMITS NOTE: Discharge monitoring is not required for this general permit. If the operator chooses to monitor stormwater discharges or control measures, the operator shall comply with the requirements of subsections A, B, and C, as appropriate. A. Monitoring. 1. Samples and measurements taken for the purpose of monitoring shall be representative of the monitoring activity. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this general permit. Analyses performed according to test procedures approved under 40 CFR Part 136 shall be performed by an environmental laboratory certified under regulations adopted by the Department of General Services (1 VAC30-45 or 1 VAC30-46). 3. The operator shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements. B. Records. 1. Monitoring records and reports shall include a. The date, exact place, and time of sampling or measurements; b. The individuals who performed the sampling or measurements; c. The dates and times analyses were performed; d. The individuals who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 2. The operator shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this general permit, and records of all data used to complete the registration statement for this general permit, for a period of at least three years from the date of the sample, measurement, report or request for coverage. This period of retention shall be extended automatically during the course of any unresolved litigation regarding the regulated activity or regarding control standards applicable to the operator, or as requested by the board. C. Reporting monitoring results. Page 19 of 26 1. The operator shall update the SWPPP to include the results of the monitoring as may be performed in accordance with this general permit, unless another reporting schedule is specified elsewhere in this general permit. 2. Monitoring results shall be reported on a discharge monitoring report (DMR); on forms provided, approved or specified by the department; or in any format provided that the date, location, parameter, method, and result of the monitoring activity are included. If the operator monitors any pollutant specifically addressed by this general permit more frequently than required by this general permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this general permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or reporting form specified by the department. 4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this general permit. D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which the board may request to determine whether cause exists for terminating this general permit coverage or to determine compliance with this general permit. The board, department, EPA, or VSMP authority may require the operator to furnish, upon request, such plans, specifications, and other pertinent information as may be necessary to determine the effect of the wastes from his discharge on the quality of surface waters, or such other information as may be necessary to accomplish the purposes of the CWA and the Virginia Stormwater Management Act. The operator shall also furnish to the board, department, EPA, or VSMP authority, upon request, copies of records required to be kept by this general permit. E. Compliance schedule reports. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this general permit shall be submitted no later than 14 days following each schedule date. F. Unauthorized stormwater discharges. Pursuant to § 62.1-44.5 of the Code of Virginia, except in compliance with a state permit issued by the department, it shall be unlawful to cause a stormwater discharge from a construction activity. G. Reports of unauthorized discharges. Any operator who discharges or causes or allows a discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance or a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117, 40 CFR Part 302, or § 62.1-44.34:19 of the Code of Virginia that occurs during a 24-hour period into or upon surface waters or who discharges or causes or allows a discharge that may reasonably be expected to enter surface waters, shall notify the Department of Environmental Quality of the discharge immediately upon discovery of the discharge, but in no case later than within 24 hours after said discovery. A written report of the unauthorized discharge shall be submitted to the department and the VSMP authority within five days of discovery of the discharge. The written report shall contain: 1. A description of the nature and location of the discharge; 2. The cause of the discharge; Page 20 of 26 3. The date on which the discharge occurred; 4. The length of time that the discharge continued; 5. The volume of the discharge; 6. If the discharge is continuing, how long it is expected to continue; 7. If the discharge is continuing, what the expected total volume of the discharge will be; and Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset," as defined in this general permit, should occur from a facility and the discharge enters or could be expected to enter surface waters, the operator shall promptly notify, in no case later than within 24 hours, the department and the VSMP authority by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The operator shall reduce the report to writing and shall submit it to the department and the VSMP authority within five days of discovery of the discharge in accordance with Part III 12. Unusual and extraordinary discharges include any discharge resulting from: 1. Unusual spillage of materials resulting directly or indirectly from processing operations; 2. Breakdown of processing or accessory equipment; 3. Failure or taking out of service of some or all of the facilities; and 4. Flooding or other acts of nature. I. Reports of noncompliance. The operator shall report any noncompliance which may adversely affect surface waters or may endanger public health. An oral report to the department and the VSMP authority shall be provided within 24 hours from the time the operator becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under this subdivision: a. Any unanticipated bypass; and b. Any upset that causes a discharge to surface waters. 2. A written report shall be submitted within five days and shall contain: a. A description of the noncompliance and its cause; Page 21 of 26 b. The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The department may waive the written report on a case -by -case basis for reports of noncompliance under Part III I if the oral report has been received within 24 hours and no adverse impact on surface waters has been reported. 3. The operator shall report all instances of noncompliance not reported under Part III 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part 111 1 2. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies, the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468-8892. 4. Where the operator becomes aware of a failure to submit any relevant facts, or submittal of incorrect information in any report, including a registration statement, to the department or the VSMP authority, the operator shall promptly submit such facts or correct information. J. Notice of planned changes. 1. The operator shall give notice to the department and the VSMP authority as soon as possible of any planned physical alterations or additions to the permitted facility or activity. Notice is required only when: a. The operator plans an alteration or addition to any building, structure, facility, or installation that may meet one of the criteria for determining whether a facility is a new source in 9VAC25-870-420; b. The operator plans an alteration or addition that would significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants that are not subject to effluent limitations in this general permit; or 2. The operator shall give advance notice to the department and VSMP authority of any planned changes in the permitted facility or activity, which may result in noncompliance with state permit requirements. K. Signatory requirements. 1. Registration statement. All registration statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the Page 22 of 26 manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 2. Reports and other information. All reports required by this general permit, including SWPPPs, and other information requested by the board or the department shall be signed by a person described in Part III K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part III K 1; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and c. The signed and dated written authorization is included in the SWPPP. A copy shall be provided to the department and VSMP authority, if requested. 3. Changes to authorization. If an authorization under Part III K 2 is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part III K 2 shall be submitted to the VSMP authority as the administering entity for the board prior to or together with any reports or information to be signed by an authorized representative. 4. Certification. Any person signing a document under Part III K 1 or 2 shall make the following certification: "I certify under penalty of law that I have read and understand this document and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant Page 23 of 26 penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." L. Duty to comply. The operator shall comply with all conditions of this general permit. Any state permit noncompliance constitutes a violation of the Virginia Stormwater Management Act and the Clean Water Act, except that noncompliance with certain provisions of this general permit may constitute a violation of the Virginia Stormwater Management Act but not the Clean Water Act. Permit noncompliance is grounds for enforcement action; for state permit coverage, termination, revocation and reissuance, or modification; or denial of a state permit renewal application. The operator shall comply with effluent standards or prohibitions established under § 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if this general permit has not yet been modified to incorporate the requirement. M. Duty to reapply. If the operator wishes to continue an activity regulated by this general permit after the expiration date of this general permit, the operator shall submit a new registration statement at least 60 days before the expiration date of the existing general permit, unless permission for a later date has been granted by the board. The board shall not grant permission for registration statements to be submitted later than the expiration date of the existing general permit. N. Effect of a state permit. This general permit does not convey any property rights in either real or personal property or any exclusive privileges, nor does it authorize any injury to private property or invasion of personal rights, or any infringement of federal, state or local law or regulations. O. State law. Nothing in this general permit shall be construed to preclude the institution of any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III U) and "upset' (Part III V), nothing in this general permit shall be construed to relieve the operator from civil and criminal penalties for noncompliance. P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to preclude the institution of any legal action or relieve the operator from any responsibilities, liabilities, or penalties to which the operator is or may be subject under §§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law or § 311 of the Clean Water Act. Q. Proper operation and maintenance. The operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances), which are installed or used by the operator to achieve compliance with the conditions of this general permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems, which are installed by the operator only when the operation is necessary to achieve compliance with the conditions of this general permit. R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such materials from entering surface waters and in compliance with all applicable state and federal laws and regulations. Page 24 of 26 S. Duty to mitigate. The operator shall take all steps to minimize or prevent any discharge in violation of this general permit that has a reasonable likelihood of adversely affecting human health or the environment. T. Need to halt or reduce activity not a defense. It shall not be a defense for an operator in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this general permit. U. Bypass. 1. 'Bypass," as defined in 9VAC25-870-10, means the intentional diversion of waste streams from any portion of a treatment facility. The operator may allow any bypass to occur that does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to ensure efficient operation. These bypasses are not subject to the provisions of Part III U 2 and 3. 2. Notice. a. Anticipated bypass. If the operator knows in advance of the need for a bypass, the operator shall submit prior notice to the department, if possible at least 10 days before the date of the bypass. b. Unanticipated bypass. The operator shall submit notice of an unanticipated bypass as required in Part III I. 3. Prohibition of bypass. a. Except as provided in Part III U 1, bypass is prohibited, and the board or department may take enforcement action against an operator for bypass unless: (1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage. Severe property damage means substantial physical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production; (2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that occurred during normal periods of equipment downtime or preventive maintenance; and (3) The operator submitted notices as required under Part III U 2. b. The department may approve an anticipated bypass, after considering its adverse effects, if the department determines that it will meet the three conditions listed in Part III U 3 a. Page 25 of 26 V. Upset. 1. An "upset," as defined in 9VAC25-870-10, means an exceptional incident in which there is unintentional and temporary noncompliance with technology -based state permit effluent limitations because of factors beyond the reasonable control of the operator. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. 2. An upset constitutes an affirmative defense to an action brought for noncompliance with technology -based state permit effluent limitations if the requirements of Part III V 4 are met. A determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is not a final administrative action subject to judicial review. 3. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 4. An operator who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs or other relevant evidence that: a. An upset occurred and that the operator can identify the cause of the upset; b. The permitted facility was at the time being properly operated; c. The operator submitted notice of the upset as required in Part III I; and d. The operator complied with any remedial measures required under Part III S. 5. In any enforcement proceeding, the operator seeking to establish the occurrence of an upset has the burden of proof. W. Inspection and entry. The operator shall allow the department as the board's designee, the VSMP authority, EPA, or an authorized representative of either entity (including an authorized contractor), upon presentation of credentials and other documents as may be required by law to: 1. Enter upon the operator's premises where a regulated facility or activity is located or conducted, or where records shall be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that shall be kept under the conditions of this general permit; 3. Inspect and photograph at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this general permit; and 4. Sample or monitor at reasonable times, for the purposes of ensuring state permit compliance or as otherwise authorized by the Clean Water Act or the Virginia Stormwater Management Act, any substances or parameters at any location. Page 26 of 26 For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein shall make an inspection unreasonable during an emergency. X. State permit actions. State permit coverage may be modified, revoked and reissued, or terminated for cause. The filing of a request by the operator for a state permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any state permit condition. Y. Transfer of state permit coverage. 1. State permits are not transferable to any person except after notice to the department. Except as provided in Part III Y 2, a state permit may be transferred by the operator to a new operator only if the state permit has been modified or revoked and reissued, or a minor modification made, to identify the new operator and incorporate such other requirements as may be necessary under the Virginia Stormwater Management Act and the Clean Water Act. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part III Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. Section 12. Inspection logs Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Galaxie Farm SWPPP Gradinq Loq Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Locations on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Galaxie Farm SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary (requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. Where an inspection report does not identify any incidents of non-compliance, the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land -disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: — Perimeter controls, such as silt fence — Soil stockpiles and borrow areas — Completed earthen structures (dams, dikes, ditches, diversions, etc.) — Cut and fill slopes — Sediment basins and traps, sediment barriers, etc. — Channels, flumes, slope drains, etc. — Operational storm inlets — Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: — Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; — Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; — Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP