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HomeMy WebLinkAboutWPO201600009 Plan - VSMP 2022-03-25 (2)2 SITE DATA I1�P�lig7.�:TxA TAX MAP PAIL N®: MOUNTAINMARCH r. . 1005 HEATWRGWTIII CROZET VA, ROWAM GAL& & ASSI]CIATES 914 r CHARLf..', - ' f 0205 - 1fw*zfjc_1 �Irl 17I N•:r '•'r'r'r "!'r" l - ' t`'tlr'?" •'f' �°,ti: + 1 ffJr f, f f f r OLD TRAIL VILLAGE Mill at ];ILA APA i FOR FACILITY LI1 CA EMT= NkFBILTAT41iL k a UelViNZwe ••••- - MATERSHM LZCKZNGHOLE BLOCK 138 ROAD 6 UTILITY ASBUILTS 1112412015. BLOCK 14 ROAD & UTILITY ASSUILTS 0412412015. TOPOGRAPHY FIELD SURVEY 0310312015.LPDATE ASBUILT SURVEY APRIL 2018 FOR SMV AMENO11ENT. r / Ba HORIZONTALr 03 CRITICAL SLOPET NO CRITICAL SLOPES EXIST NITHIN T)E PROLECT LIMITS. FL000PLAIN: THIS PROLECT IS LOCATE17 NITHIN FLOODPLAIN. LIMITS AS SWW ON FLOW INSURIIIAICE RATE Al AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 DATE OF SURVEY: DECEMBER 14, 2022 BOLD AND OR BOXED INFORMATION IS AS -BUILT AS -BUILT SURVEY NOTES: 1. HORIZONTAL DATUM IS BASED ON NAD 83 (NA2011); VERTICAL DATUM IS BASED ON NAVD 88. MATCHED AND VERIFIED TO LEGACY SITE CONTROL BY OTHERS. CERTIFICATION OF AS -BUILT SURVEY I, JOSEPH C. MEDLEY, A LICENSED LAND SURVEYOR IN THE COMMONWEALTH OF VIRGINIA, DO HEREBY CERTIFY THAT THE AS -BUILT CONDITIONS DEPICTED HEREIN ACCURATELY REFLECT THE CONSTRUCTION OF THE REFERENCED SITE. THE FACILITIES HAVE BEEN FOUND TO BE IN CONFORMANCE WITH THE APPROVED CONSTRUCTION PLANS UNLESS NOTED OR IMPLIED OTHERWISE. „ .6601. 3385 LICENSE NO. TH OF JOSEPH C. MEDI Lic. No.3385 03-24-22 CPf"I`�Ir VA SHEET INDEX VICINITY MAP SCALE: 1®= 1000 FEET -- _ Lo"r .rfcr. : =31 di=r - •' - 1. 2. RIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORNNATER MANAGEMENT FACILITIES. B. FOR TEMPORARY SEDIMENT OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMNATER MANAGEMENT FACILITIES° CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PEbMISSION HAS BEEN OBTAINED APPROVALS oln-M - . .. r ' ' _ SHEET 1 ®F 7 0 ro VAS R�SWPr�° ��0000 �0�, F`�rici2 ed..Wat�QualjtttCealCla.tPr e urn. Pr°o OTV-Amended Facility L3 Analysis Ua-blify77L Albemarle Co. D�tee 7/20/2018 16:05 �_�Norksheel N, o. 7��f�6 )0�ml St #� °Det rm"ink the a{ plicaibl�arp (A) end th pbsl:467 o dd tih nm3i Fj1_p_ --I 41j5P1x3bk`aee (=�)."' 299693 s if.or II 6,860 °acre. _-A L 1= .ost- e1'e optvent HAw1 iotts..cocer. s f 0 ��L 0 0 D_ ekteslA stria ri¢e� pater n�k 160737 s f•• r 0 3.690 o acre" xoWdN-v_ay eo s.f, or ]0 OU-N acre s s=ffO.pO.500 IRS71 s„nQr �1II 11Eg uu!!�� -acre. s.f or 1VfE� ,Q_ ]o k"i =1I0111 4�14Ee 'FL= Igtal_ 160737•s-f di �0 -3'690 acres �01 Q Ttk u �(t�471 Pt ��iebo " nt uz�etv^kite c+<iyc`" `°= : �� x lOb e M %13MPi.$) ft-0'abl �o�TyrS P> 1:0 Biofilter Pn2�_j I Enhanced E Laid d .irld,krcatopon,thc site.❑ ❑Draiii�❑Itlrit.peTi�iious Efficiency, Areal ('s.f) Brea (s.f 0 0 0 50 299693 160737 SWM COMPLIANCE CALCULATION EX. 20'SANITARY SEWER AS -BUILT SURVEY EASEMENT FOR ACSA DB. 2886, PG. 136 .;11.U141 CALCULATED WrrH BIC CALCULATED W rH ALL bar W4d"J91UP4h _ ®ti'ENOM DETENTIION FI- B,M1'(sy: -1 ](1?quat[on S 2mm3) 71 u� Ip re4t[n'e �osl-de,ekrPlrtent total phusptxttatesBl )ild entermi�"Dwposed IP lg�;l tact ti�\'ekiim nt ucelll & .an�n°Cou>s C$ r °oa 13y1P irc�t dtan..t e t1 `tit: )1�1 w\etli3NPg arms �Do0010�Q1� O (jLnni)`�•�� ��q•'!°� )] x ��O SpwOrO� 2 28 I� ...qi'9 poLA)dS�PCr ar IDO L .1,•III a�7:Ili�u�. xo.Lu�rn A.quaCian,S°24� /- 20' VEGETATIVE LANDSCAPE BUFFER TMP 55E-01-H I I~ EX ZO' SANITARY SE4t I EASEMENT FOR ACSA I DB. 2886, PG. 136 SCALE i® = 20' a 10 0 00 40 BW E IN FM Rai HydroWq)h: TR$O TeIxAw Hydr�g iph Ygggd IInput Dam 2-YR / Rainfall Obh6ullonType: Type It Rainfall Depft am h Bees Flaw: SAO eb IMP hEnpolva, On �( Submee Area CN To 71 Name Subareas (acre) (mM (fin) I I IDA4a0ST em 80.10 12.00 10.00 di Peat Discharge (Op). 16.76 cis Tim to Peek 12.20 ran Rum Volu ne: 0.63 a=41 Runoff Hydmgrsph: TR•00 Tabular HydrgrWh ltfstlrsd 'OLD TRAIL PARK' a,��� /- \® m \ a� ❑® Irggul 10 YR COUNTY OFALBEMARLE / ������5� ®® ®��®� ��y ® ��� ��� o j Ralrdall Distribution �InhllOe Type: ��Ol h DB. 3955, PG. 1-10 �� �� ®a ®�� „2 5 1 _9 \ Ban Flow 0.000 do IdP On gk Subarea DaIurvirfirearn Area ION To 71 01 r - - ��L_ �.1,V ❑-ram°.. \ ,��',/ G, o - HOLDING WATER / UNABLE TO MEASURE NA n m ® p S Nary (nere) (rein) {rNa) eta;e', e - �� ❑� D �IC ;�'��� I I DA*MT er1® 80.10 1z00 sago 639.1` `� - �° ��o o v'� Computed Results: Pore ,. Peak (Op): 30.05 Cie X 639.6° to Peak. 1.2212.20® This :nrrFrcsg'1PaIMns: 1.� scradl ® ® ® jhM 0J E0-01 A V _ `� /' ' / I X 639.9' 6OUNiY O I lu 8L LUnLU lag KAIi 36°, \ � On / SPO v v v INb'�62765 V A , "I-N '1LRSH au 7T�W d,�_ CN Te Tt OE+OItxH ENMN I I \ \ \ \ I � \ {min' (ran) CL BASIN# \ 640 - wim" DESIGf4 OF _ MAO 12.00 1ag0 V A v I I N.-3PO9677.99 v _ v v A\ 0190SYNTHEM UNER. m E. II n, •: \ I E:11�23851.,17 X b\128 \ \ \ � \ S�� HOLDING WATER/ UNABLE TO MEASURE �® � I- _X,634.1' \ \ `qL RISER= I I X634..6' \ I \ `N39 679 15 634.3' / I I ® I _� EX VAR. WIDTH STORMWATER MANAGEMENT FACILITY EASEMENT DB. 4829, PG. 323 7 H ICI R 11 \ 81 LB/4R COINCIDES \ \ \ \ E9�63416' 634.49 f R Stor age k_ 29 WITH PLAIN \ \\\ /X 632.8' I // llC 634.T yy 75.75 tds 632.8'J, 633.0'-XI / \ \ 1 I / / 12.20 Ia IAl cft 632.8' I / // // \ \ \ \ \ \ Uldhod X632.8'/63 0, / `r 6�,32.T / // '// // r Storage Ian BLOCK 10 \ �� \ 63a.�'�t l h/` r 6h0 LOT 12 \ \\ \ \ \ \ \ \ /' 30.05 da 12.20 hr 11.01 One EX. 15' PEDESTRIAN maidraum Pun d marage: 0. i ACCESS EASEMENT / l a\ \ \ \ \ \ ` - 640 _ ' / / ®� d Maximum Pad 36 8.7It6 ILI u - FOR PUBLIC USE / \ - _ OB. 4829, PG. 323 Reservoir Storage I lion 511.09 we �� ° 12.20� / / / rd ��. / , _ _ _ - C / / / 0 touted Peat Turns. 12.20 hr CIO /l l \ -\ - - - 1.0142 mov4art ROCK 650 / ARMOR �\ / / 637.60 it 5OX REM TO It BLOCK 10 LOT 13 / l EDGE OF GRAVEL - ' _ . NOT OBSERVED AT TIME OF SURVEY , o .cllCli1�pust-dc\ck,Pnxnt total plx�Tlarlitl k1�C� rU�i 11�' 11r1 E O �d 1�1�1P (}?S 0 (�Sel1- e�� u Pr�lhltalit,rcnti?\ale1lxxni4,61BMIo(c\lmvs,5 dmdcemti�Ilorni)0 00 Ta , I.ri\iu. refia"tnc po51-deg kipniilftutalplwSPhutott5 krud entciing, roposcd )lyIl;gfyL111 pund-ery'edi') ��DI���OO DDi�010 �:I rerd� o a 4. Q°uL'e�Y:Fr rgmoved O OIU oiTPru°, g P4-18 toundsrparyear reMp I �.ileeilal �ititoWiiiitlltuanLload-rerriotrciUy thdB:VIP:1y')'; IO O v�rrin°cedJ°tal et110v=dB\iP1nc&dRKrF,,.-e+--rcmored R:11P;:.gt'(.69uatron`$32� ithrte L ol,r total Polltuant k I) 1 r )Vtiil lty p�ctpoad 3 's (potordsaper ycar.)j� I01����10�(� L..�IIlo,cyt ivtPi�]d ]palhnant°load R cd by p� s&ld., MP No.° l,yuation 5.2.{�� n IioadmarehpoM'Nunl 5=71huaq 0 1�=1 ,rmg.rdR°rsl 4°18 A' , , PPou[1'.. S P?r Year'rQm fed 1 0 V'e on i ran:.._. ���i�uno�rdroinl'. 4:�1n8❑❑TolalFoundsy .r:i'ear.r6m .. • a a ] r ,..._ a I f R iA r 38 i'. ].I r' 31 d a ] 111 WATER QUANTITY & QUALITY P,rojgL�t WOV (1 per�irdrrp a reJal�(�y13 94.8i .F� REaMED TENT VOLUME; CATIONS Project WOV {112 er�imp.,.area)= 6697.4 C F. FOR ENNA1140EID ED PER VSMH 3.07-8 Y MARSH SHALL] ESEI F. X WQVr• WHILE ]J Y _dY DIETIENTION •'r r. SIMU. RIEPRESENr ADDITIONAL L / EX 20'SANITARY \ - _ ® p UJKJ.OUU Q8249 / SEWER EASEMENT _ 831m000 8W3. FOR ACSA _ m _ ®® 032.000 1736.091 / DB. 4829, PG. 323 _ _ - ya e o ® ®a 834.000 4075.104 _ INSTALL LAP RAIL / l 660 SCE sNECG PER., 3,'�1B CIE/ / I I - APPROVAMAILABLEE3,425 CF l l O l / l BLOCK 10 / l LOT 14 l �� O �r Tkf l 'r� /�iYWAY\AREA f2 U OE LUEU4RLE i-10 (PLAT) PG 26-7.37 (PLAT, \ _ �r / o❑ ° o � ,O �°a 0 1 TMP 55E-01-EV-C s @ EAST VILLAGE, LLC DB. 4829, PG. 323 U4 9y I p � XOo SAP. � L u i / / N EX VAR. WIDTH 4 STORMWATER o EWPO ea(CF) i 1# TaIM Dbdarrge: 1118.155111 Ms yyktBrtltabooElaarOon: 8" it Talhavier Ela i m um: 0.00 11 Detention Base &Do it OslM lf11: RISER Drop Pipe Riser Top Bw: 63e.22 1< Riser Base Bw 627.67 11 Rlsar Dlsaaher. 46.00 In Odke cbewc are: (Lao weir Cosfltatarrt 3.33 Culvert length: 94.38 0 CuW nlsrreler: 36.00 In Culvert Invert Out 021.0E R CuM t Fddbn CoalOdent 0A1 CuMR Emarta leas Cagkknt 0.01 Discharge: 113.16 de OLAek C4 01, Odd Shapw Circular Diameter &W In Invert Elevation: 630.00 0 Coatildeut 0.60 Numbard0pai 1 Discharge: 2.95 de velour. 5.03 We Shapar Chmiar Diameter &W In Invert Elevalm 635M D Coefficient D°e0 Number of Openings: 1 Discharge: 2.00 are veloaw.. 10.49 llh MARSH ZONES: 31X r DE A VEGErATED BUFFER STRIP SHOULD BE MAI BESIDE _ STRIP SHOULD BE A ?Inv vvi = Big 44 mmigm �:LLJ,. SWYSPVM wr Rrl 0.000 630.000 632.000 4755.242 ,ffi_ I r l SWAGS .tin. 111 i... 640.000 42711.962 IYI 80=620 .a. ar «I .. SCALE 1 "--20' 0 20' 40' NOTES: AMENDMENT TO VVP0201 DOOM im DUE TO SIGNIFICANT AMOUNTS OF ROCK BEING LOCATED WITHIN THE APPROVED AREA FOR THE BIOFILTER, THIS AMENDMENT PLAN PROPOSES TO CONSTRUCT AN ENHANCED EXTENDED DETENTION POND USING THE EXISTING SEDIMENT BASIN IN LIEU OF A BIOFILTERR WHICH WILL REMAIN CONSISTENT WITH THE APPROVED DESIGN FROM WP020I600009 BY PROVIDING 50 POLLUTANT REMOVAL EFFICIENCY. 2. ALL DRAINAGE AREAS FROM THE APPROVED PLAN WP0201600009 WILL REMAIN UNCHANGED. O. SWM CALCULATIONS WERE GENERATED FROM DESIGN PARAMETERS DETERMINED IN THE APPROVED PLAN WP0201600009 SHOWN ON SHEET 3, 4. ALL OTHER DESIGN PARAMETERS EXCEPT THE NDTES AND DETAYLS SHOWN HERE ON THE AMENDED SECTIONS OF WP02Oi6000O9 (SUCH AS EROSION CONTROL PLAN) ARE TO REMAIN UNCHANGED AND SHALL ADHERE TO THE APPROVED PLAN WP0201600009. 5, REFER TO SHEET 7 FOR APPROVED DETENTION LANDSCAPING SCHEDULE. 5, REFER TO Wpnpn FnnnrD rnn Amrm rr nrlpipr1 ^ rAf- -,ULATIONS. DATE OF SURVEY: ® MANAGEMENT FACILITY AS -BUILT SURVEY DECEMBER 14 2021 u p ,. �\, ❑ i / / d �_ EASEMENT 11.=659.� � De. 4629, PG. 323 � 1 , BY TIMMONS GROUP BOLD AND OR BOXED 9 28 IMPERIAL DRIVE INFORMATION IS ° e VELC Z STAUNTON, VA 24401 AS -BUILT i 44 rr � • Ii 1 � _ ' I i u 1.� °i I r • Ti _ • I 1 " � it r T u • i 1.. r Ir �i ! ; F• I • 7 !I: MIT •I 2018 IHEEr 40F7 AS -BUILT SURVEY r NEW m 6 PROPOSED HIGH MARSH ZONES FLOOR ELEV=634.00 TO 634.5 ASBUILT 48" RISER W/72" TRASH RACK ®Q (SWAP WITH APPROVED RACK ON SHEET 5) �" WEIR TOP OF DAM 640.00 36" 638.15 �� o '� g ly.•.°••°°•••°•°°° Horizontal Scale — 1 :20 ®� e � ®® ASBUILT RIP —RAP PROTECTION TO BE REDISTRIBUTED WITHIN Vertical Scale = 1 :5 ®® I I �`- NEW FOREBAY do OUTFALL TO BE EXTENDS AS NECESSARY' ®® ®® ®® I I ...°.°.°.°.°.°.°. ® PROPOSED LOCATION OF SEDIMF ® ®I I '. .......... °.°.°.°.°.°.°.°.°.°.°...° °.°.°.°.°.°.°. NOT OBSERVED AT TIME OF SURVEY ®� ® .°.°...°...°. . -------- PROPOSED SEDIMENT FOREBAY ® FLOOR ELEV=629.r UNDER WATER ®� ®� ® �9� 6 APPROX. 20 X 1 ` ®� CALE 1" 5" VERTICAL �R ��� �`,� ORIFICES UNDER WATER � ._ . ��` A CODE IN NEW 6" 0 ORIFICE ® PROPOSED LOW MARSH ZONE To "� . 635.00 (PER APPROVED PLAN) FLOOR ELEV=` � CORE IN NEW 611 0 ORIFICE _I � 630.00 (PER APPROVED PLAN) SEE SHEET 4 tiCa1E IN TO BUI T RIP —RAP PROTECTION ENHANCED DETENTION DEEP ZONE FLOOR ALE 1x m 20- HORIZONTAL ELEV TO REMAIN=628.00+/— — oIN APPROX. 30' X 20' 1 M SCALE IN FEET ® Z 10+00 +20 +40 +60 +80 \ h'ftluln Stononnter \lnuagement Haudbook, f hnpter 9 9-C.16.0.•EXTENDED E ENTION P..ONOS: 8M CHECKLIST Pomi dunacterfstics and (check all that .appM� ❑ Water gustily fee: ❑ Channdl protects ❑ Ties kilo gramdl I.I. . Hydraulic Conligw4lwn. ❑ ' III Im C IJci l � � YE 11+00 +20 +40 +60 A a at A m�s v Stoi inii•ater \Inungir fi ut Handbook C'haptet' 9 I t�rl 77 7n-rh .1 :Type of 111 TIris mrill Facility ❑ Sedimenttorebaylaboveground) ❑ Vegetated If bufferarc:a' ❑ grass filter strip O Gras§ channel ❑ Oth",,°y9 I o .. linearly, trmntren uerenrion tronns snolwo the msperren annuarly eu P onus am prone Te a ngn cagging risk of the CD low flow orifice kleatly, file orifeoe'strould be inspecfedl� l least twice year after initial conshuctliThe constantly.`chonging water levels -it) LU Ponds make. d difficult f d?mow, or manage 'vegetative growth. The botlom, of Fro Ponds often become°soggy. and wafer laying fees such as willows m m need a Pe i r r h s reel er ° r oil required ay v.Me and will n d to be managed d nod c mowing o f e fo waf tkrlfer s ysang a maintenance n hh•ol-wa ' and the embankment The remain buffer may be managed as a meadow g x Y lflg Y g win ever slime eon w tweet Fr€ tern remove! o! selir'rnen! from Jim I eta ever •5.7 ears or ing 9 Y Y) q Y( Y ri r when 5096 of the loreba capacity is hued is essential to maintain the hrncfion'and edwmance of the Y P ty 1 P; Cfl"Pond.9 Sedlmenfs excavated floor, CC) Pwrds are usually riot considered toxic or ha[mduusbsu flley can be Said y cf*po3Pd of cithc r. by land appkcatlon,of land filling Z Y Y �eBMP Of Potential Problem cY- $ How to Fix Problem Who will Address Comments Problem a a O � Mee xl bale ,CgCIaIIOn - r� �' iUDpiemDrt as nCrdC] a OanC .1? . - � T r... n,cm CC(ts tyn 1 �RC IUVC In'111M1tJlfi 1 .wn 0 �. 11 1 I eYl)II+ t Ion Mx\ Hlar ❑ ❑ CII II IL lilt L I U d Den kin b NPu 11 1 n v. txnrb . r r C no site air o 1 cNmPrn I Svne.c lmmodate Y 6 0 M 1 11 M•gl,a Drof v t 1 - - 0 0 I I rlx rS b. lb>alfb a JnCC waac and aPc JUce-tu s. �❑ Ow),a o RC mO•C lmmedlata - ✓ _ __ irsniu! Dro .A e�. JCGtl.> IV lleb D'❑.— -tl(JUaYn J tlV a[BUC tlYS JIIdDblrtapa beaurroilt faclin�. ❑. _ _ �� dint IOtdllly TMrn K nxrxs Nn e O m V Ion Re o e mDBUta l oI a 1 II IIII1 file b ru bl I fla 1 .U.as kid ilea n o .. ° o,, olwlnx IJI'o ea. I lxxx w wwnwncn M CroSDn and/0❑❑ e InimtvllAe/y IUCrNty Intl, pfwn:ct tM• [.a1Re of inn• Own Pr or S d1l❑ Ix VICafIalJi elU'rim x nl(O.xll sK)II o . ar�C rrodm nr ttm sons or DATE OF SURVEY: DECEMBER 14, 2021 AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 +20 ®kin ate Juh :013 Virginia Stormwitter 'Management Handbook 1-1 Z = Moment of ~ Who Will Potential Problem HOW to FIX Problem Address Comnionts Problem 3 a` — Yc Ile � C'ecite The sediment to F rP 1 I11 P sl ckn r 1 (a )and xJ 1 Y „edlmedeposits :die SO% alollopearcIllsy"ItI)f sediment snOUld lee ared rlanl go fael)a•/S at Ieasi, eve ° .o PIUItle/ Ildl` � brehav S• r years. and earlier. as' i11ri nnntlnd �' 0 � `dc r � Adjust Usi the suthmnnl de Ili P ` Vfe linurld eel The aMxn"fminer is not Ve•kcai. °' ° I� k r eta ! 10 i Vefilta P VrOleSabna (COIIIk11M1111 el' LJ Ihl lmnnl e. T e isevttl c9 Inq — L — n❑ •.',n.7 trlorLagnrl a Ihiser a onnceei) and make aver adplslmems nrnnttxl to •neet Prolmsefcn _ e . the apwOretl tlesbn a n i T the s dead ❑❑_ — Revlx rlah. uneed°nd ' Owlet or - YeOetdtbn,e � The Inlet plav'dea a staple conveyance ❑ f 1 'e r/ i i Do eS4 One ffI .. S1at>a Ze Immediately, 31 9 Vl, ale: ('"a( ❑.Pl e 7 ° UWilef Or II °' net -clonal into n� d J __ s d e , inhere Is I .orsSvwr train, aeons, or ❑❑❑❑ Remove Immedlatol Y yy L)Wlter or Jproressomal •sedlmenl Thorn s ewdcncte of 0 aros:ONundercutnng nepair erosion damage an ,Owner or Q. :do Jnxud ltr hlnl�❑.❑❑ -••Stab.'. •:e proAKa0ni1 'Th'ere r C1.161nq '1 ""!I, Ls10r1 Of hm -. p ;,alcl hirar1U faslabll!kfre ���� " Inlet tDllhu lorena darn. O Remove within _weeks a ° +I. �• a There is woody d. rr growth al In! IwebayProlessbnal d ] Il :cnvnry item • v 01 L _a:,,°,ial burrows must be >ackfeleo and compacted❑ Burrowing animals 9h0Uld be ° °• rroleaabna: Thorn Is lwtlellCn °Or nuisance anmaly . III M3noty removed numanery removed front the Thom Is morn roan 1 a ❑ AnA Dl nlnlnnal alto [Nnpacl llwllef nr Imch a settlement . Ine sal to the design grade Prafessi0n,T rn live _ non s et al q �i1N� J P ❑ ❑ - 0 n race intmediata r Owner o r� - l I 0 k c �0� r a� Ir ii;l m, d n i .nlq'fcun rianl compos'tlon b materials are cmSUlem vitro .. Pluk'.•.•:xin:r7 evil fslenl vein Ilwl ° ❑ tlx genm:a Nr 1 Puld Ile slgr ❑ approved plant criteria and reeace o0 ,nconvkul I s anufn: o o _moo fx' present ens :are �� o o P il l R move mvaswe ues SDC nnem I c stay and rep a present eea ' C7:Illt Ian IN4!dl!d° Cum x 0 �kasb� Tr kit In m elfar n e, ' nuYler ar0 on wellapd is "ands and p ❑ nr'itk•i WJltvulg ovary 3 monm, and °wa•hly 1o.ov. OWneror 6 Vegetation pemr sui as need -r duung fu!:I oraesala a1 4tnd-Ud0Uer1 depentlmp wifenny oust the pest rowm season .n lJudall°el ib''' 0 w,w tot leant rw ce a 'earl Grass around tole ❑. ❑ ':r a nelgtd of 4••q' 1 an Owner or o �. hGllry Is,OverOrOWfI °en'DY Ora3a Chpdnast DralSlWn81 ° BOLD AND OR BOXED INFORMATION IS AS -BUILT 0 = Z = a- > > 0 0 0 0 p vihJ WVW Element of Potential Problem w ! Now to Fix Problem Address $ Problem July 201J i u Comments ` .. .. glf i4• Iauoo 'D Ile PI L 11 11 1 'VeggWli0r1 6 deaa Jr needealenl DlanUn 4 RI mow nail Ic tlla de.ld ul ( d• d Ill vnl nillinil r 1 1 III, °'• rrolesslona ° o o I n is 4 nereaexrsaswe ❑�❑ trnote drOr ssive ❑ Remu eimnllJla181i❑` v o Dpr Jfesswna❑°�� 4Yx11'llrl!.Ilf {1-Ilti • YPljnt:InYP ReDyr and stadll:e Dhys leap Wamacle and reseed or plant _ _ Wp (iwrllir l,f cnvrr •+rn•,lol° nr slum In urea c n ai �p aaatbnal veoeutbn �o ranssmr ell Permnnenl pogl and Slde 9b , e. �6 T.nJ ', ovnh hl nlxnial Ixm uwti inn; In ha rkrlllnd :url nmlrylcled ..] Owrlririn' Slopes nLr• vn d,° rul,.lnce oner Rorel"IxJ solo :drc shculo be p1D(C'S,IIII'.I �°�. Cl III nl'Inl.l• 'PIIIL,eII lepl :1161 y r m n Fees cat b P sediment. o ❑ Hifluker.lmv I I pl , v Cu lQtc a N Mi c sl o m r to d canon • the Inc " '1 lu e (U ua °vDivnl•r. profess lei b did , , kid l uvk r p a 1 °aCCUn1Ul tlDn. d nere n ajellale. S� dltCY511I'IC ngCr°(pal❑ ❑ILC IpI IIJnIYrI OdCyLJ1e J(ClYY rrofesabltai JI>J. VCIh:#VYe�� 1 J IIt"J ce •��� LLLEEE m0 IUCJ Ity e° •�,1 rleces of ;ne naef a°e 1 ter r un Oe o a a Q ' rq, IxQhen Repair ImmrW'alrry ^` Pmtr�eWmi m�salla orE. ssand o Vahes are acre 53iUle ❑ Rebalr. aerkedeo ,fProrYtltioltai frolic Prmcipie i°an00oeratonal •1J❑ o o "a❑ °v ••❑ SplllWey anO Low Flow !Reverse-sbpe ppesn� and fiashLoara nsen Repair a6 rtBeded' ProfessWllal r ���� orike(s) are it good CorchIm �. a • • ,ry tLYIJP .:ln Cnndnn o'O �. Q 7 hares 1( aPnlanra m pI 1 O hf,n rl;ndua)� OClear bluckaoesd9le nice Ql' nr ordnelt) ale Otthe other t Prw1+; llnill :O _ 1'ro1Q$sWM1il � 1 {i cluugnn JalusllnDlrs veedu1 to rI i -'_ b Remove 0 0 ❑ lNatef or ornal Lj piml r. n)Ir der 6_ In r tnl,n )r Other uu 1niUxar:• Yi ell(❑ ❑ lmm101allge tuner h11 a'4 �0 11 1 ern f)IY '1 uep'! ❑n III' I� Fro o' Repair an 0 rellabll:e I cr.11ela, tJlglna. el u 1311 1 Ir 1. blue ill i ❑❑ ❑ Immedlae+✓. esDecJlly attef Pro195sronal, I rite:' , .'I u, t J(_ y . u d n or storms •V 'o In W ur '.I ill hen e 9 I. °snePnVP wD7r areas Renler[0; 11 inn §I.rn IlCe or mknok; mmenia e • )° U.tln' at d Abutments and Abunnents d n2 wtr-kin' n1 nu ,.0 1.1•.rllln 11•,. Amm°al nuffCrws nASf!life bachflltd grad clxnp;ddeJ,❑ Oaroeang animals snouts be° h6m3nBy 'lmCVeO from in area. — •°' '- e °•'"+'"'x,Cr ° w'IJI•... �..... 1... ... Removai:or woody specks near a on the emlunkmenf ana maintenance access areas should t)e core when rm r.tnkrn:•nl m discovered. but at least ° eveN 2 vexs +80 14+00 +20 Io ZRI �Iniuiluuuec auJ Iuspc�cdougGuitleliuei A thick.`healtil} ¢''ass cover: fine of trees slid brush. should be ntaintaLate d on rite el �t h a cove; IvciLI helnPstabiliie the Sitrfacc o2 the cliubaiiluu t and tv'ill sLi olliv u 1. Thd ciltl<ink ucuY'_ll.add be IIf P ell letJieall'. dui ;i_".:r. _ti ,Intl tic:isJli, gieioii •S Ill. t I 1 cr.lht= Ibc curl e.l Il c e.111, TI. _I:•°'+hnuld tell Lc ell.:C" tl:ul Ir utL.tet it: het••ht 610 It necessu} then emb wktuatt should be Ltned, teril'ze(i and seeded iu thq fn II. ait;l '_rmvii, ,cal. n� T.inllil tciTihrc ntliliott d°,it�uld be b.lec`d olil • c The i jte of .e�cd ,hiluld I e u.i. cut`vv lilt than ori:ivallv�y+ccificJ I � the ee•! ,'19.:" plamP ' n �ll erosii,u'gulhes _nomd,tiulinZ the ,rowing season should Lc ba:knllad,� irh :op,q reseeded and tected (liu)lchedl tmtil re¢etationis establislici ro \lrtlm rlif non ate ]Im,a¢einenf Handbook, C haptir 9, .IinnnlIh' ?013 z =_ Eforment of Y o- Y Who Will amp Potential Problem Flow to Fix Problem Address Comments g Problem e:,fl Qpe � a, diilere is woody q mwlh DI the II�II ❑ ❑ Ree p. al a wbcay species near or m me emercercy ° spillway sholdd Itl' done Uwner or p II�III II�II II�II II�II II�IIII via D v when dlDLovared bw al professional LrJ most every 2 vissom trash, r,n.l°I^-vale• Kasn debnslorotnpr °..,❑ OJatNCl Ole ❑ IInII l_,J ❑ -w °-p" Removelhlmlralatay, 1 _o,. _ LQwner or polesslonal ❑t�❑�L�J IInII IInII IInII� �J Uverfbw:Emer Sflllwu mlc U y I Y There is evidence of .wn"enloacsrutllnl . Repair erosion damage reeled t°'- pOwrer or. eesl0flait e pThole all.' Soft s ls, '{{iI ❑ ❑ ❑ ltl oroe, and aLab ° Ile. p r Or r ❑ ❑ ❑ ❑ ❑ lase ! w sinkholo' !I kromilowe e: /10n81❑ Ofit, one la r of ulwtn annamq exLsl a UOYe ins nillYe sal., ..- ° the outlet provides a°, srabin con voyinee -�f1I ❑. ❑ ❑ ° a ' Fleedorce riOTrap OI odMi Orf110rkIQ meterleb. ° .. Professional ❑ ❑ Ir�II Stabilize YNnedlalatr as needed, and 8r "' 0 Owner� � . from the pond , &S—J bbtka et. pre .. I Lu 6 1 here Is woody I.�d 0 Olen w h+h 5 kH of Prune vegetation back la leave a Win dncnarge araoe OIWei or Plokssbnal a❑❑a Ihl. lx111P1 1 tl hJl lnl 1 7 O e nn e nil] MmOve knmld�ely. q� ooki rof� r ILJI .. 'Theo. 1'e.cns:iw< Irasn OebnS Or OIl offer I I`,Ilnrhnnlpe�tio� I Tltulc a1r e.c rl-.�,J ssdlrnen'. deposits at the steer. y,' lul ❑ ❑ Remote ImeM. rrOtessbnai ❑ ° h° I ..1 ca n Doc a 9tl s us undercutbnp erosion R r, nkinfoce at e ePal ePla— rip raP aslleedad, and Prokssbnal or OUpLnceO kip -rap a DI alIXlrxf Rlu DUllr!I e _ _.... °e reslibalzo. e EstaMah adequate access° 1,1HIH ReIItOYe Woody veoelation and debris that may bbtk Access lu the facility Proleeslonal Dr M components 11 F ..�f. o- access Ensure that u VA. perhaps. :Idlxsl:l(P, hardware can be opened 111113aryly�I :rod akd For AS are b — o — o o (;Dllapss knees must Inc reblOr�tl N alit uprpm position.Jappededgesond ' PrOknsbnal w leMM' mint be mapad UVNeII . - rY rl v n :.°i ate Fes one o rode r. rep°' Feces YtltOrrtapY mph or — — ❑ Gar n t of beaMer — kXRapea a wigce(s) and make Wl,er, eoluetmerxs nNOM b meet s anal ❑�❑ b'w the approved de}pf. 0 mcatlan. C7: spec _ CO rodents Kan IOCJI Correel:red pronlems_ Owner or 0 ❑ ❑ ❑ r I ! [� es den s 1 I ess one Film est H1;. loaf agnanl pa tit stock the baser with' mOSOUitO IrSh to VrOVWe, n:umal nun:qu,lu A n!t!1.11•.' ❑ liknqu", ❑Ilddrl atxvl control treat to mosWAoes ° Uwher Or , as needed N scrayln0. then %4teysior;?I u C mttsqu Au fit Ylcklt. (e{;-, Bacillus murendensls or., ° Allm.tl frennd:iilnr orvyA ... _-. absorureloy races a'y_0 All bark are an pathu'ays on thcP, Char fni111C .1 d 1 or orhervi�e 4.1bihzed to elinii :111 allinlal burrcvvs shtould be backtilleil a. be remu ed lid the coca. o h� All nctd';ivol dt ccpciatiror'attd otlw611ce isssso:iitcd roots stcuis°sh(illd b_e rciuuvl extelldlaw IV at IC:1S1 =5 tee; tJ Unit die9C1 4� .ate CS°) i syslenls III) be estrSet and Ihe'eicat for tioni the nibakllient adiac nt a: b9 �e a ten— d o a1lkuleul toe altd abutlucnt we 0' zit 41111fle replacedaud c ales tzd j \liy iejian's urr'tdd to tlic piuicp,I ;jiillic -I Cr ?tole vrntnl en' ate \ et11 ©I trniehut to 1 Z II o-w ❑ under ❑iti❑iretintstauees._Th netich side's) 1 - Strom at , NI aR ement H. kit book P I1 ,.,t. 111d be te'tll p i b11Tel should llO U u Ile cr>nnr!'� Z = Y Y Y Elerr,eriT of Potential oblernamp F T� c � 3 or >e Infoml evolw+l1 (,rGCtl FeemNllmCm On lint _ MN n pwflef$ a 6ktPs <.iJS p`o'10c ea>eTxnt Uy elute Sx: IJO retell !U am sC'aner' cl[dny Talk the nb n°I,irr+` nd retaps ° a Lae rs hog lg DerYlOUs o renimuell nc_nrs - _ area- to elver 1. DUE TO SIGNIFICANT AMOUNTS OF ROCK BEING LOCATED WITHIN THE APPROVED AREA FOR THE BI®FILTER® THIS AMENDMENT PLAN PROPOSES TO CONSTRUCT AN ENHANCED EXTENDED DETENTION POND USING THE EXISTING SEDIMENT BASIN IN LIEU OF A BIOFILTER, WHICH WILL REMAIN CONSISTENT WITH THE APPROVED DESIGN FROM WP0201600009 BY PROVIDING 50% POLLUTANT REMOVAL ;EFFICIENCY. 2. ALL DRAINAGE AREAS FROM THE APPROVED PLAN WP0201600009 WILL REMAIN UNCHANGED. 3. SWM CALCULATIONS WERE GENERATED FROM DESIGN PARAMETERS DETERMINED IN THE APPROVED PLAN WP020i60OOO9 SHOWN ON SHEET 3. 4. ALL OTHER DESIGN PARAMETERS EXCEPT THE NOTES AND DETAILS SHOWN HERE ON THE AMENDED SECTIONS OF WP0201600009 (SUCH AS EROSION CONTROL PLAN) ARE TO REMAIN UNCHANGED AND SHALL ADHERE TO THE APPROVED PLAN WP02Oi6000O9. 5. REFER TO SHEET 7 FOR APPROVED DETENTION LANDSCAPING SCHEDULE. 6m REFER TO WP0201600009 FOR ADEQUATE CHANNEL CALCULATIONS. Ell v , U /g�:a WOW 9w ,.__ , r I, 1� I I .. ;ffi J:" :: I :: _ � ••- ° .� tom'' +�, � - AS —BUILT S U EY • I xa ° a v s i 1 _ jdj °n J •, 6 I 1 e , i p ° _ a, _ I fro• � iiiJJJ 0 _ ,^ V/1 pp � 1 e ° r , ,• .ys P Fj - '' �' Isr,.-+- � � ., .. "� :, � ,Yu'• ems. � "�'�.� . , c: y"N,o � ° P &" NO PLANTINGS OBSERVEDAT yh !`\��-,1 TIME OF SURVEY - _ :+�` ',.A}.'d� � .•� n ez—� .:d - S �`h.^.1V"I°I €?li',} �g qX:�C IL e q� �'+ri�� r �+Y _o:. � - �d� � �' �� � a�`� Rrs��#�e °� ��.iJ! x �.:"i�°�• ° � °�€� . ' eta a e" � " �. •w;:v .. —�k�� NO AS BUILT INFORMATION m IN >I ry 4 _ g, e° e . .: �� _ •4 i .r nl /3 yy SHOWN ON THIS SHEET -Ml, i �; , _. ' •. .. "... .. � �. � . ,�,..' ,d ,.,\,°�� � EPANCI�SBEf_ �t�ON NSj�ljJ_ A .. • `:Y ' , a➢., .a l J r r !4. ,t� n �. - :, yy . ...., ,yo: ..: �- . r ::. " : � �[�PION•. (jF ;y>'NUR4;=R�/;t��£�. 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"'. _, f-.:-fL. ,�.°I' ,{,�' f rt } E . m APPROVE_ D the by ` �� •� ��, °r ,� Albemarle County.: — Community,Develo ment De artment Dat o vl 0 z 1 u Y/ �c I ,. YN� _ _ .r ,. ��j$y / .. .: - e , , :. DATE OF SURVEY: D E C E M B E R 14, 2021 _ , - "�N;M�t�uNlkA(IE: SIZL :NOlpf INDWATGW-S,TkTt} •,` ., o -..• x.a'Cr RIDER-BIRC}I lti,-._.I, -t`�`; his ._°r Lrrat o _ ..... ` 0 C /� ,T9O +A ��s FAINGC b I � •�,.'.al� 0 �FAC'. AS -BUILT SURVEY �� • �, ' � / QL Ql�e ar ' j f Ktl A11' r At R BE ° R tt o FAC `. — BY TIMMONS GROUP =k° ITTTRReeR `�I;,, I ,: < yp / s/ /��,+fit" _ ' ° q_ , °` .;ar � AR`. w�/�/'• °.fl �ont.: 28 IMPERIAL DRIVE \ , v' STAUNTON VA 24401�� an ed ;ASTER U e , ° 4Z e / a they late o R 1g4fir0^ S FA BOLD AND OR BOXED �.. �rgiarc•� �>z,°r`w : ' x♦ �' :". ER.NUXi Grow o.gl3E E�, a �� ;� '° #SQ ConC INFORMATION IS � � Q�AC _ MORN ..>a :� ` -. >. � ,. � '; •. ��P�l•I�tQr�SNE�E �V�CEE:-'; e - ' — -'v` x `: „` f's f ' y%J '': O': n✓:: -.,v °6"._ -- F-,"'r°i' - -,f I�.y - CY�`.__�.d "v�, ' �' � '..° �, � .°�' � � � „�-I��aaa�rcis'�3p'ial NYk�#i��1, �LAZt✓�FG 57ARP .. AS BUILT Y'n _lyer oiaUbov, bora ensis — �• �Q _..E.—{;1M _E.. 86.E .. SedSRaknGarde.n ix`.:RfilfX�7rgovE-i�Y I s,acre: .° a5 over Cro�up ie°s sctggestiprj' `rai• : g , 30rbs .acre byer�Crbp:�Grai ,Rye{ ,. P' c 9�rbsO Ernst Seel?: •lY Souih�in.'P,,ledmontDetera'ti6a BaS'iri ` iz° MI�A1F-4; rr raZafStt1 Zpa`cre? [ 7 . ; eC� _ W o P r ,t °,, fir. �� _ roprper�l�,PPTi°e 3t`°agges oraa�fcs _ rti¢ � .����,a�S��� . .' Sg .Cover $ rs 'ti � o ih�ewtP - �e�l�s�declD er 3 2' eFrYj I FlnErUSe $Fo1E� -