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WPO201100017 Plan - VSMP Minor Amendment 2019-05-17
SITE DEVELOPMENT DATA AMENDMENT # 1 ExirnNc use: ADDRESS: MARTHA JEFFERSON HEALTH SERVICES 3263 PROFFIT RD. CHARLOTTESVILLE VA 22911 2-STORY MEDICAL OFFICE 10,000 S.F. (FOOTPRINT) OUTPATIENT20,000 S.F. (GROSS) CARE CENTER @ PROFFIT ROAD TAX MAP ID#: 032AO-02-00-OOlAO VIA DEED BOOK: D.B. 1415, PG. 057 PROPOSED USE: EXPANSION 2-STORY MEDICAL OFFICE 10,600 S.F. (FOOTPRINT) 21,200 S.F. (GROSS) 41,200 S.F. (TOTAL GROSS) ZONING: HIGHWAY COMMERCIAL (HC) BUILDING HEIGHT: (PER ALBEMARLE COUNTY CODE, CHAPTER 18, SECTION 21.4) NOT TO EXCEED 65' -PROVIDED ANY STRUCTURE EXCEEDING 35' SHALL BE SET BACK FROM ANY STREET RIGHT OF WAY, IN ADDITION TO MINIMUM YARD REQUIREMENTS, A DISTANCE OF NOT LESS THAN 2' FOR EACH 1' OF HEIGHT IN EXCESS OF 35' PROVIDED: 2-STORY MEDICAL OFFICE 0 29'-0" MINIMUM YARD REQUIREMENTS: (PER ALBEMARLE COUNTY CODE, CHAPTER 18, SECTION 21.7.1) ADJACENT TO PUBLIC STREETS: STRUCTURES (EXCEPT SIGNS) - 30' MIN, OFF STREET PARKING OR LOADING SPACE - 10' MIN. MAXIMUM NUMBER OF EMPLOYEES: 65 PEOPLE EXISTING PARKING: 79 EXISTING SPACES FOR EXISTING USE PARKING REQUIREMENTS: 1 SPACE/200 S.F. NET OFFICE FLOOR AREA RIVANNA DISTRICT ALBEMARLE COUNTY, VIRGINIA FINAL SITE & UTILITY PLAN 0 0.80*41,200 S.F. = 32,960 S.F. (NET) FIELD SURVEY SOURCE: 32,960 S.F./200 S.F. = 165 SPACES REQUIRED BOUNDARY AND TOPOGRAPHY AND BENCHMARKS PARKING PROVIDED: PROVIDED BY OWNER PER ROGER W. RAY & 53 EXISTING PARKING SPACES (TO REMAIN) ASSOCIATES, INC. DATED FEBRUARY 18, 2009. 141 PROPOSED PARKING SPACES (NEW) 194 PARKING SPACES TOTAL (INCLUDING 8 HP) BENCHMARK: US COAST AND GEODETIC SURVEY Z155 ACREAGE/USE AREA: TOP OF A CONCRETE POST. PARCEL SIZE: 4.13 AC. (179,903 S.F.) LOCATED AT THE INTERSECTION OF U.S. RT. 29 BUILDING FLOOR AREA: 41,200 S.F. AND ST. RT. 649 GREENSPACE 16,880 S.F. (9%) 12.4' SE OF THE SW CORNER OF CRENSHAW'S INTERIOR LANDSCAPING: GARAGE; 45.5' WEST OF THE NW CORNER OF GREENTOP AREA REQUIRED: 5% OF TOTAL PARKING AREA MOTEL; 0.05*121,823 S.F. = 6,092 S.F. REQUIRED AND 46.5' NE OF THE CENTERLINE OF ST. RT. 22,354 S.F. PROVIDED 649, i TREE/10 PARKING SPACES REQUIRED: AND 85.5' NW OF THE CENTERLINE OF THE S.B.L. 198/10 = 20 TREES REQUIRED EL U.S. REVATION=552.2.708' 74 TREES PROVIDED TREE CANOPY CALCULATIONS NGVD29 10% TREE CANOPY REQUIRED 4.13 AC.*43,560 S.F./AC.*0.10 = 17,990 S.F. REQUIRED EXISTING TREE CANOPY = 13,113 S.F. PROPOSED TREE CANOPY = 22,635 S.F. TOTAL TREE CANOPY PROVIDED: 13,113 S.F. (1.25)+22,635 S.F. = 39,026 S.F. PROVIDED STREET TREES ROAD ROAD FRONTAGE REQUIRED PROVIDED ROUTE 29 300' 6 LARGE OR 8 LARGE 8 MEDIUM 4 ARMSTRONG MAPLE 2 RED MAPLE 2 AUTUMN PURPLE ASH ROUTE 649 215' 4 LARGE 4 RED MAPLE S I L T IMPERVIOUS AREA: oT rl EXISTING CONDITIONS = 55,335 S.F. (31%) PROPOSED DEVELOPMENT = 119,482 S.F (66%) // WATERSHED: A 9<< NORTH FORK RIVANNA (BELOW WATER INTAKE) o eFFORE MEDICAL/DENTAL OFFICE BUILDING: TROFFICE BUILDING: TRAFFIC (TRIP GENERATION) PER ITE, 8TH EDT. �Ov LAND USE CODE 720: MEDICAL OFFICE BUILDING DAILY: 1470 VPD BEFORE YOU DIG CALL AM PEAK: 95 VPH PROTECT YOURSELF, GAVE THREE PM PEAK: 130 VPH WORKING DAYS NOTICE N VICINITY MAP Scale: 1' = 2000' PROPOSED LEGEND ASPHALT PAVEMENT 0--� SANITARY SEWER LINE WATER LINE o STORM PIPE 0 DRAINAGE STRUCTURE NUMBER /-174-1 PROPOSED FINISHED GRADE CONTOUR ELEVATION E/P DENOTES EDGE OF PAVEMENT TIC DENOTES TOP OF CURB F/C DENOTES FACE OF CURB (MEASURED TO BACK OF ANY ROLL FACE CURB) S/C DENOTES BACK OF CURB NOTES: 1. ALL STORM PIPE LENGTHS ARE MEASURED FROM CENTER OF DRAINAGE STRUCTURES (D.I. OR M.H.) 2. ALL SAN. SEWER PIPE LENGTHS ARE MEASURED BETWEEN INSIDE SURFACES OF MANHOLES (UPPER STATION- LOWER STATION-4' = LENGTH) 3. CONTRACTOR IS TO MAKE HIS OWN TAKE -OFF ON THESE PLANS AS ANY QUANTITIES SHOWN ARE APPROXIMATE ONLY TO SHOW SCOPE OF WORK OWNER: MARTHA JEFFERSON HOSPITAL 459 LOCUST AVENUE CHARLOTTESVILLE, VA 22902 PHONE NO.: (434)-982-7038 FAX: (434)-982-7016 CONTACT: MICHAEL R. SPATZ EMAIL: michael.spatzOmjh.org INInF:-u ENGINEER: RUMMEL, KLEPPER, & KAHL, LLP 801 E. VAIN STREET, SUITE 1000 RICHMOND, VIRGINIA 23219 PHONE NO. : (804)782-1903 FAX NO. (804)782-2142 E-MAIL rmckinney®rkk.com ATTN. : RACHAEL McKINNEY, P.E. SHEET NO. TITLE 1 OF 9 - 3 OF 1-5 5 ^r 1 �— COVER SHEET EXISTING -tiGE)" DITIONS,--i -€ROSION-GONTROL NOTES AND BETAI=S l E - a 9F 15 9 eF 15- 2 OF 9 }6 6F 15 INITIA6 EROSION GONTRG6 PLAN UTILITY GRADING & DRAINAGE PLAN 3 OF 9 H 1OF 15 DRAINAGE DESCRIPTIONS & ANALYSIS FFIT ROAD 4 OF 9 12--GF 1 S STORM PROFILES & HGL CALCULATIONS D5 OF 9 1 s5 GF 15 14 GF 15 STORMWATER QUALITY ANALYSIS "FIL4ERRA" INILET N6TES & DETAILS 6 OF 9 15 OF 15 LL-1 -� L-��1 STORMWATER QUANTITY ANALYSIS EXISTING LANBSGAPE PLAN GF cXI i 'TTS -REMONfAl- -�...r PROPOS€D LAN9SG Ao= of AN PR9POSE�--ozivBSERPE Pb°�Pd EXISTING =140 F1 07 C1 03 F_LEETRIGAL LEGEND AND NGTES -,-- - ANI_--ir, LIGHTING rllT SIIEETS PAVEMENT PROPERTY LINE - +- SANITARY SEWER 7-9 OF 9 WAWA WPO REFERENCE SHEETS WATER LINE --- POWER LINE U DENOTES UNDERGROUND -- ELECTRICAL LINE-0 DENOTES OVERHEAD GAS LINE APPROVALS CULVERT OR STORM SEWER PIPE - - FIRE HYDRANT DEPARTMENT OF COMMUNITY DEVELOPMENT EXISTING CONTOUR ELEVATION PLANNER /ZONING ENGINEER ARB ra_" 4. CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLETION AND _ FINAL ACCEPTANCE OF ALL CONSTRUCTION AND UTILITY LINES, DEPARTMENT OF FIRE RESCUE 5. CONTRACTOR SHALL COMPLY WITH VIRGINIA STORM WATER MANAGEMENT ALBEMARLE COUNTY SERVICE AUTHORITY - PERMITS, A STORM WATER POLLUTION PREVENTION PLAN SHALL BE DEVELOPED AND IMPLEMENTED BY THE CONTRACTOR FOR THIS VIRGINIA DEPARTMENT OF TRANSPORTATION CONSTRUCTION ACTIVITY. HEALTH DEPARTMENT DATE SDP 2009-00034 W N w w a F 2 O Z 0 w U � LL w O In a a 2 Z J @ �_ H- w w w } _ ~ z N z Z W z O U o0 v) WI Oc: w O w o- Q a W U W m Q z a = W H Q O W z w z P4 a �W� W �U maxis zaa� W U F KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast. If, free. It's the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.: V162083 DRAWN BY: DSH CHECKED BY: JOR DATE'. 12121/ 018 SCALE: NOT TO SCALE ,CADID EXO 'PROJECT SENTARA WPO AMENDMENT FOR Wawa - LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA BOHLER UENGINEERING 28 BLACKWELL PARK LANE, SUITE WARRENTON, VIRGINIA 20186 Phone'. (540)349-4500 Fax_ (540)349-0321 12)2vzola �'� `4`Q70NAL ECG SHEET TITLE'. COVER SHEET SHEET NUMBER. 1 `�✓��i�� Jcf % �� � %c_ cur: �• .J 28 7.12B g26R._� _ A / / 141 I � 5269 p lcrl .rts? k 4y1 � so ��A 44s 4 �9 T 01 5 y �. I j 531 1' 1 C N 1 1')A•IL521 8 L4T B EX1 ST 523 p� G!_`il 2 ST��O a2 ENTP 819.08 N // ��� 7 m" 2p,000 �Y ii�`i`� �.? �r ME�1CA1 OEF o S26X7D a �/ ���lEx F�'IJlL01tvC 1Cf. (SDE, 5 • 52 y 2, 18 / r `y, 0 OP INLET J O 1 S 28X6 <S ove s* w 128 NEW Ccg31.2p 21 2 p T ��Y MEp1 0 S. n o 5``"' 6.9z 1 x 5zT 65 B`�IAI� pFF-1C 1JI�D/NG E U I t / i f IFk sin. •, ••-- 5 ` yry� ..� '. 0` y,a �,. �, 9. o p T / f / Q. I y26y F#q OS S.d X52 .75! '30 3 a ? o u aul�Mwx arty, rza' / T E=5\za.08�' ZesO 4156.IF S . G N i ar wr� a ev W N J.p,TT5,7A7 er ` !o r rn Ant ` � 529 529,5. J187$p� © T�Co52T E�p.527 N yry1 F GUY' Nv )0 V yL• �u 7 ZIC y11' ? / 6 aO NNI 1a 11/ ew,. / 522. �. N 528.3 z w a z z O pqz w ER KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG v6 r„6c ns nee. ns me iaw. NOT APPROVED FOR CONSTRUCTION PROJECT NO.: V162083 DRAWN BY: DSH CHECKED BY: JD R DATE: 12/2/201a SCALE: NOT TO SCALE CADI.D. EXO r PROJECT: SENTARA WPO AMENDMENT FOR Wawa LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA ® BOHLER ENGINERRING 28 BLACKWELL PARK LANE, SUITE 201 WARRENTON, VIRGINIA 20186 Phone. (540)3494500 Fax: (540) 34"321 12/2112018 r SHEET TITLE GRADING & DRAINAGE PLAN SHEET NUMBER: 2 J 1 i ' f i r , f f � f Remmey IOcppr & Icy IA. a6P C-nnkug ingm- gneen $01 Fuss Main Slrea • Rwhnaa4,VA OA DA= 0.42AC. C= 0.56 Tc= 7 MIN Al DA= 0.23 AC C= 0.90 Tc= 5 MIN ODA= 0.22 AC. C= 0.65 Tc= 5 MIN Pq.N- MPRTHAJEFFERLRSON HLALTH SFJMCE 0ae 6'1'M lnmtm CHARLOTIESAl C., Mb, AK P q No #(ifRfllll rhr.I obv RIM Apr DRAINAGE DESCRIPTIONS 0 REMAIN) 66 L.F. OF 15"0 RCP CL III PIPE 20 40A = 526,00 INV.OUT = 521.23, S= 7 S= 7.23% 0 RCP CL III PIPE EX. DI-3A (TO REMAIN) 20A 1 ! - 52 = 522.601 TOP = 528.44 - 0.76% STRUCTURE: \n CONVERT EX DI-38 TO MH-1 - TOP 526.99-531.60' 53 L.F. OF 24"0 RCP CL III PIPE INV IN = 521.18, INV.OUT = 520.83, EX_A2 = S=0.66% 71 L.F. OF 18"0 RCP CL III PIPE CONVERT EX. DI-3A TO MH-1 1p INV .IN = 522.50, INV.OUT = 522.27, fi' TOP = 527.93 S=0.32% STRUCTURE: \ n Sic /J'`3C\`` MHA TO DI-1 CONVERT EX. DI-3A TO M11-1 TOP = `-z-•' -sr526.06' 94 L.F. OF 24"0 RCP CL III PIPE INV= 520.67. INV.OUT = 520.05, EX.A'I 6A' .IN 5=0.66% DI-7, GRATE E�flr 14 L.F. OF 24"0 RCP CL III PIPE 30 = 5 6B INV.IN = 520.05. INV.OUT = 519.95, (PROVIDE OPENI R 6" UD'S) S=0.66% DI-7, GRATE TYPE III F. O / RCP CL III PIPE 50 OA A�IIR 2.79, INV.OUT = 522.52. TOPW/IS-I TOP = 525.00 --IN_-yy,,1F�� O.50X (PROVIDE OPENING FOR 6" LID) 33 L.F. OF 18"0 RCP CL III PIPE INVX. = 522.25, INV.OUT = 521.92, pA 49 L.F. OF 15"0 RCP CL III PIPE S= 1% INV.IN = 519.42, INV.OUT = 519.10, STRUCTURE: EX_AO 3 CONVERT EX. DI-3C TO MH-1 TOP = 529.49 7� S=0.65% MH-1, TOP = 527.00 LIMITOF ANALYSIS) X, 69 L.F.OF 24"0 RCP CL III PIPE 7A 43 L.F. OF 24"0 RCP CL III PIPE INV IN = F 24'0, INV.OUTIL II PIPE 3A INV.IN = 521.89, INV.OUT= 521.78, , 5=1.16% S= 0.16% EX. DI-3A (TO REMAIN) g� DI-7, GRATE TYPE III, W/IS-1 TOP = 524.00 TOP = 529.16 (PROVIDE OPENINGS FOR 6" UD'S) 62 L.F. OF 24"0 RCP CL III PIPE 8A INV L.F. OF 24, RCP T III PIPE 518.40INV.OUT = 517.33, 4A INV.IN = 521 .74, INV.OUT = 521.22, 5 V0.5% S= 0.8416 DI-3B, L=20 EX. DI-3A (TO REMAIN) 60 W/IS-1 TOP = 532.29 TOP = 525.80 40 0 40 80 SCALE IN FEET DRAINAGE AREA MAP B1 DA= 0.26 AC. C= 0.90 TC = 5 MIN DCID DA= 0.29 AC. C= 0.59 Tc = 7 MIN 62 DA= 0.03 AC. O DA= 0.13 AC. C= 0.90 C= 0.72 TC= 5 MIN Tc= 5 MIN SSD 56 L.F. OF 4"0 PVC INV .IN = 525.60, INV.OUT = 519.44 S= 11.00% RD1 58 L.F. OF 8"0 PVC INV .IN = 525.60, INV.OUT = 523.5 S= 3.62% RD 92 L.F. OF 4"0 PVC INV .IN = 525.25, INV.OUT = 523.5 S= 1.90% NOTE: HOPE OR APPROVED EQUAL MAY BE SUBSTITUTED IN LIEU OF RCP CL III PIPE FOR THE STORMWATER SYSTEM. HOWEVER, CULVERT #80 MUST REMAIN RCP CL III PIPE AS SPECIFIED. DA= 0.77 AC. C= 0.60 Tc = 12 MIN DA= 0.67 AC. C= 0.78 Tc= 7 MIN 12 DA= 0.19 C= 0.60 Tc = 7 MIN ODA= 0.35 AC. C= 0.85 Tc= 6 MIN OC DA= 0.91 AC. F 11 DA= 0.11 AC. DA= 0.50 AC. OK DA= 0.20 AC, C= 0.75 C=POI2 DA=071 C= 0.80 C= 0.75 c= o.7s CN=96 Tc= 8 MIN =T 5 MIN Tc= 7 MIN Tc= 5 MIN c= G.onslte+ G_onsn" (2+1{ � �_' -- L DA= 0.36 AC. H.ON"+ R.oeelte RTE.29T.Iane =P013 C= 0.52 =Poll DA=1 67 - e CN=94 DA=0.28 CN=95 TC=5.0 •6T ' I'y4 << CN = F P C = (q Q < Tc= 7 MIN _ TC=50',.-,-y' ,--2.04 Qss. 3.� '?a Table 2 - Cul-rl Summary Table: Culvert 1 � wmm®� inlcY Ek ation Prtcny. St9.Wh OM:tebvaEan( enl: S:l.JSfl f.iwnlnnm,_aeMP f., ur.3 Rn�neoY,P 42 L.F. OF 15"0 RCP CL III PIPE OA INV .IN = 517.27, INV.OUT = 517.00. S= 0.64% UNDERGROUND DETENTION 9 (5) 107 L.F. OF 48"0 RCP CL III DETENTION PIPE INV.IN - 516.50. INV.OUT = 516.10 W/(2) 32'X5' JUNCTION MANIFOLDS. AAM.H., TOP = 522.80 INV. = 516.50 M.H., TOP = 525.70 B INV. = 516.85 C A M.H., TOP = 525.10 INV. = 51675 M.H., D TOP = 521.80 INV. = 516.40 A14 L.F. OF 24"0 RCP CL III PIPE 9A 11NV.IN = 516.37, INV.OUT = 516.28, S= 0.64% 10 W/IS-1 TOP= 522.80 AADI-4B, L=6, W/IS-1 MODIFIED W/ INTERIOR WEIR WALL TOP= 522.10 (PROVIDE OPENINGS FOR 6" UD'S) EX. 80 L.F. OF 24"0 RCP CL III PIPE 11A INV .IN = 516.21, INV.OUT = 511.71, S= 5.6% A48 L.F. OF 15"0 RCP CL III PIPE . INV .IN = 519.30. INV.OUT = 519.06, S= 0.50% FILTERRA" BOXES F81 10'X6', TOP = 526.00 FB3 8'X4', TOP = 522.10 FB2 6'X4', TOP = 525.80 FB4 6'X6', TOP = 532.29 THE PROPOSED WAWA PLAN #WP0201800056 (WPO PLAN) IS ROUTED USING THE SCS RUNOFF METHOD IN THE PROGRAM AUTOCAD HYDRAFLOW HYDROGRAPHS. STORMWATER QUANTITY THE PROPOSED UNDERGROUND DETENTION SYSTEM HAS BEEN ROUTED TO OVER DETAIN SITE RUNOFF TO MEET ENERGY BALANCE, AS WELL AS, REDUCE THE 1, 2 AND 10-YEAR STORMS BELOW THE EXISTING VALUES, SEE PRE AND POST DEVELOPED DRAINAGE PLAN SHEETS, STORM DRAIN COMPUTATIONS PLEASE NOTE THAT THE EXISTING SENTARA STORM DRAIN COMPUTATIONS REFERENCED FROM RUMMEL, KLEPPER 8 KAHL (RKK) ON THIS SHEET, UTILIZE THE RATIONAL METHOD. THE VARYING RUNOFF METHODS PRESENT AN EXPECTED DISCREPANCY IN THE RESULTING FLOWS DERIVED FROM THE TWO METHODOLOGIES. THE SCS RUNOFF METHOD OVER ESTIMATES PEAK RUNOFF VALUES FOR SMALLER WATERSHEDS, WHEN COMPARED TO THE RATIONAL METHOD. THIS DISCREPANCY IS SPECIFICALLY SEEN, WHEN THE PROPOSED WPO PLAN IS ROUTED USING SCS AND IT APPEARS THAT PIPE EX.A1 TO EX AD (EX2 TO EX3 PER RKK) IS OVER CAPACITY DUE TO THE SCS ROUTED 7.43 CFS FROM THE VAULT. HOWEVER, PER THE WPO PLAN, WHEN USING SIMILAR METHODOLOGIES TO ESTIMATE PRE AND POST DEVELOPMENT FLOWS IT IS SHOWN THAT THE POST DEVELOPED FLOW IS LESS THAN THE PRE DEVELOPED. AS SUCH, IT IS THE OPINION OF THE ENGINEER THATTHE PROPOSED STORMWATER FACILITY DOES NOT INCREASE CURRENT DOWNSTREAM FLOW RATES, AND THAT ADEQUATE OUTFALL AND STORMWATER QUANTITY REQUIREMENTS HAVE BEEN MET FOR THE SUBJECT SITE. Ha. To aW. awn ewt eeSrteB g enMElrv, Lm� s,ow W. cepery YNPary al YI eeY rUn,so Pole PWn1 Mee Cotlt. Mc. S llea MemI+Y Slrt� Merr., L aWel Lower Ya. I glul Ybl leereel C "I ISUSH letel Inel Iml tM IN rtl IKI 01 1-1 Ael Im,l Isle DiM e3 019 o+A US a3 SAU Elie I66 1b6 521.91 SAIL •551 9.&1% 15 rU+3 2091 9.55 aw 503 am 8m im u--T eraT- I - f -- T¢aTsm 663 I - -T -,_ss sz 1 .1.I+eaS1 a-1 E 100131 4. n I Tve a�-- SDP 2009-00034 0 In 0:: N W U F (n 1r W Q In Of Z Q Q Elf N W W r Z Z z O Z W 71 H- O U o d In Otf W U W rr N Ljj W U W 0 _J w a Li = Q ~ � Q Z QLL- a O 4 0 LL o � rnIN 04 F• co V) Q �zDO CIO ~ M ZQ Z �Uo WK co o a W 5 w a` 41 c 3 fr G KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast. It's free. It', the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.: V162083 DRANM BY: OSH CHECKED BY: JOR DATE: 1212112018 SCALE: NOT TO SCALE CAD I.D.: EX0 PROJECT. SENTARA WPO AMENDMENT FOR wa LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA BOHLER ENGINEERING BLACKWELL PARK LANE, SUITE WARRENTON, VIRGINIA 20186 Phone'. (540) 349-4500 Fax'. (540)349-0321 12/21/2018 SHEET TITLE: DRAINAGE DESCRIPTIONS & ANALYSIS SHEET NUMBER: 3 53( 52( � Z Q W W A � 110 � o Q N bCi WW NNN Iyi �.- NN•= 1 m0 OWip CI Nm M1G Ml W .N O J NW W NNN hN 0 O OND•� N NW N WNW 0 N F- yyNNW W171 ON MNW O1 OI VI O�� piDM I AON OO nN ApW WfV OWW 0 OWi II 86 N�W I}MH m onI IF F I^N rc}� NWWI nll 11 ~}W MKS J. fNII� O W^.W II NII I},n MAZO QOd MWNA It I_ I}W OW MWWII MNIIH TNII O II�O n� IIti W II��� W Q apWII W<II� +in Q� I NIIr }n JI +N A n +WOI- I+In IW NN W II Z_ O110 - II w� II •fi» �N A?O xo��» x ��» bM it x��»> x2F�» �i .IWA�� N i 3V1�ZZ II�� II?O aw O NO II •�i H_Z Wn:_ W�2Z U �22Z WUVIO'zz W V1 D'�? WV10'22Z wUW K?� W� ¢22Z VD W� ¢?? NO3f/I0_22 WW KZ EXISTING AIDE .t GRACE .__ R57LF I I I 0.76R 1 LF. � -------- ;.. - _ will . 62 LF. 36' RC _.._ CLASS III PIPE _ I ---_ -' I 0.32R - _ --__- "RCP 1.00R _ 0.16% i 0. LF. _.___� 08.00 -'-- 1 --- �� 1 CLASS II _ PIPE _ __�_ - __- " RCP CUSS I PIPE --- . • 0.66 ry i 18" RCP CLASS III PIPE -` 24' RCP _-- SS III PI - --_.-_ 43 LF. 214 - EKSAN. LINE 24" RCP CLASS III PIPE 24' RCP CLA III PIPE 7.16R 0.50R 11 24 RCP CLgSS It, IPE 24" RCP CLASIII - 1 PIPE 16. 518. ` i N7 A7p F 0+00 1+00 2+00 I a O W 6 F on 6 Oi Oi N � O Q p0 II O O W W n o�.-+NO W n¢� W II II t. OW22-0 II 0 N �n`IQ--�> VD03NK? 10110 F21Q VIgW �222 C-- 530 EXISTING "Po"" 49 L.F. 520 15 R P CLASS III 0+00 STA.50 TO STA.7 n N r vD O n � p N O Opp IT O v� W IT 0 U^ O Z O I W D: i U1 i W 0_ Z Z PROPOSED GWE EXISTINO GRADE 42 L.F. 107 L.F. 0.64% 0.32% g244 15" RCP 48" "RCP SS III PIPE RCP LASS III PIP 510' 0+00 STA.60 STA.11 1+00 2+00 STA. EX.20 TO STA.9 �W$ Iwo= W o N m U m � i 2 d o G \ U Y\ O O N p y vNI N W Z B \ \ II Z O Q „QjoM� QWN N II F S O S o M } 2Z O U r CJ O N N �.j W WInKz W WN2 �� z � 4 V W W F IOA1 t W N i(Nl W II roi0jp rc + it ¢ + W �p IIZZ0 I r 2> X OU ~ Z Z Z EXISTING GRADE 1 rJ30 EXISTING GRADE rJ 30 PROPOSED GRADE o.' 15" CP CLASS I ASS � PIPE AAA 520-1520 - 7+00 6+00 9+00 0+00 STA.30 TO STA. EX.2 A R00DIte41clepper&liahl,lTv I Co-lEag Fngmeers • .1F 'Mum S-1 Pqw Nane MARTHA JEFFERERSON HEALTH SER'ACE Cae 61*M • Rkhmond, VA la m CI IARLOTTESMUL Gmpoeehy AK Pe{ No 8380J301 C x*.d b/ R-M p 2 -- HEAD LOSSES 25 = Da D, Cl. VI q V. Lo s 3 W REMARKS y W w T-I. M-111D < H1 1.3Ht 0.5Ht i }, o s entl i 11 513.31 24 24 19.34 5.78 IZ761704 80 4.51 0.0035 028 1.13 0.18 020 40.0) 140 1.70 515.09 521RO 9 617.55 24 24 1276 6.05 10.17 6.76 14 0.62 0.0032 OA4 0.13 0.14 025 90.00 1 0,631 0.04 617A2 1 621.30 5 516.20 N 24 10.II 1216 882 5.06 214 OAO 0.0020 0-010 0.80 0.00 0.00 0.90 IA3 MASS 123.10 7 519.37 24 24 882 887 180 12.15 43 229 0.0015 007 0.57 0.19 DAIS 3000 021 007 519" R850 IXS 521.55 24 24 1.60 584 735 517 105 0.53 0.0001 DOI 0.13 0.19 0.35 85.00 OAT 0A1 5211a 627.43 E(6 52243 24 24 7.36 6.50 GA2 6.84 63 0.63 0.0011 OAS 0.13 0.24 0.06 10.00 OA1 0A6 622AG 627.84 EX4 522.82 24 24 6.42 287 620 6,58 62 0,871 OADOS 0A6 0.17 0.04 002 22,00 0.29 1 026 523.10 629. 16 EX3 1 529.38 24 1 18 6.20 5.92 622 2.67 B9 0.13 0.0007 OA6 0.03 0-" 0.09 2400 0.37 0.36 623.74 629.49 EX2 623.74 18 1S 6.22 337 312 3.92 33 O83 0.0033 0,12 0.14 0.06 0.00 0.00 020 031 524.De 527.27 IX1 624.06 15 38 3.72 821 1.78 3.37 71 0.18 0.0013 OAB O.Oa 0.37 0.73 1t8.00 1.10 113 626.28 625.99 EX20 525.28 38 0 1.75 ODO 000 8.21 145 105 0.0000 a00 0.26 0.00 ODD 0.00 026 034 026 525.55 534.85 0+00 STA. EX.40 TO STA. EX.5 Mq 10-vr Hcdraulic GA Bdeline Coro utations Ens �C)Zil • 1tI 1 mmmmmmmmmmmmmmm �..mmm- F z � h �jY00 LI L_ O3 N 4 (1) N 04 co z2^3 4 co GO w � J u THIS SHEET PROVIDED FOR REFERENCE PURPOSES ONLY SDP 2009-00034 REVISIONS REV DATE COMMENT BY 1 1221118 AMENDMENT 81 JOR KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast Its free. Ira the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.. V162083 DRAWNSY: DSH CHECKED BY: JOR DATE: 12M t2018 SCALE: NOT TO SCALE CAD I.D. EXO PROJECT SENTARA WPO AMENDMENT FOR w�iiia ww" LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA ® BOHLER ENGINERILING S BLACKWELL PARK LANE, SUITE 201 WARRENTON, VIRGINIA 20186 Phone: (540) 349A_%O Fax: (540)349-0321 GYlf�lrbS['. SHEET TITLE'. STORM[ PROFILES & Y1GL CALCULATIONS SHEET NUMBER: 4 �rirriii►�'- n ����.. 1"�iliP1�IL i I I I I I I i �ig i - r rrriiW00 ii��i' rrrrrr�rlirrrrr�lru�u now rim ► -� ariajulms y �''+�iriGQ.�\r,,�/rri►�\\►ilrf iln ,,�� �itN /iG161►,.r. �rriir\'�R;)71/rr--�IN�'iG� �►�►ri® �'lirk'►iGr�-maO�IrR„/.I�i�il►�\�rrl�1�=7G1n �iiS�ii'r)G\rrQ:� �[®ririrlb �V���[!!! � �lri�� i�iri � \liil;: � ■ ► �il����si�', . �� ,,,,,w�it ��i®�i/!R llril`�' ��1� Jii�' �mri .-rr�,�ioii mrrrie� .I rr '�/ •Glii®: `� �!r�w, .rrii sir-�+�cnGrr !ir) r5il�ll�®f°�►.r�1�/,ir/ri[ r.lirii �U:-arrr`/rirri,� 9/rG� liii jiri!� rs��iic1•orrir� _ !ri)9► ' Jrii► iiiC7 )rr �)ri►`; %�i 7�i��iir111�iI�llitr►�!)iGl1_�.'��ilil . iiiiili►�► '--�.�.!�iir�iilf' \r6►;�Giii� lii■� ` :Irrri►l►� irrrr M►son .� `�-�!l:�i�►�-- '� � �i� /gip r.�i�-ari' I ` M ION i .w-iri►wall �� A ii trills/)� EXISTING PERVIOUS AREA=.•CURRENT EXISTING IMPERVIOUS AREA ULTIMATE BUILD —OUT PROPOSED IMPERVIOUS REA ROP • , 124,568 S.F. �G�, • • , EXISTING IMPERVIOUS AREA= :... • ®®PROPOSED IMPERVIOUS AREA= %5,335 S.F.i4:31% �I • • SCALE . TO SCALE - THE PROPOSED WAWA DEVELOPMENT PROPOSES TO REMOVE BID RETENTION FACILITY B AND PURCHASE THE EQUIVALENT NUTRIENT CREDITS REMOVED WITH THE PROPOSED IMPROVEMENTS TO OFFSET THE LOSS OF BMP TREATMENT PROVIDED TO THE ADJACENT AND SUBJECT SITE. PER THE BMP COMPUTATIONS WORKSHEET AN IMPERVIOUS AREA OF 0.59 ACRES IS nr.nr.a:,.pweinM.'nn,+i.n.s,,:wr.wil.., .�. 'pw.° TREATED BY THE EXISTING BIORETENTION FACILITY. PER THE STORMWATER QUALITY CALCULATIONS BELOW THAT ACREAGE TRANSLATES TO 25,739 SF OUT OF THE TOTAL IMPERVIOUS OF 101,036 FOR THE .:n.«,oAr:.an.,mama ar« nn.. OVERALL SITE STORMWATER T R EAT MEN T ENTIRE SENTARA DEVELOPMENT. AS COMPUTED BELOW THE CONTRIBUTION OF . « ,••oani°mmw arIs THE REMOVAL CREDIT FOR FACILITY B IS 0.21542. THE TOTAL LOAD REMOVAL OF a FACILITY B WAS COMPUTED TO BE 2.299 LB'S AS SHOWN BELOW. AS A RESULT, 2.30 ; ,°',,,,,,'"0•"m„°n �Q', ,,,,,,,,nm LBS OF PHOSPHOROUS REMOVAL CREDITS WILL BE PURCHASED PRIOR TO PLAN •«,� n�;,�«�^•« - °'' «„m'n°°.'w"°m'°r.,.�' APPROVAL FOR WP0201800056. m"'"'°'° u«.:u:psgns,Da vu r ,�rrwrum��n _ .M Cvnpuslbna •nrWarMMM ].r STORMWATER QUALITY CALCULATIONS: no'aw::e,w nTmnox°«.rM.w-MiPimP_ P. —.,nbw..,a -A- BIORETENTION FILTERS / MANUFACTURED BMP �._�•�. °....« -. �° a- n•�=�� Darn, W« aa. mow« SYSTEMS (FILTERRA BOX) - TO CAPTURE AND TREAT VOLUME EQUAL TO 1.0 INCHES OF RUNOFF (FIRST FLUSH) FROM THE IMPERVIOUS w AREA. ..� REMOVAL EFFICIENCY = 65%� FRACTION OF IMPERVIOUS AREA SERVED �., 8,083 SF + 9,950 SF + 25,739 'q1 + 5,565 SF + 11,815 S +-27,-444-SF + 6,219 SF + 6,221 Wes«-,«•�- a� a3.. was ti m 101,036 SF / 119,482 SF = 0.85 % 8108=25739/119,482=0.21542 x aw.«<r.r�+....a .+«.=,.-o «a ,, •„' In a•. ��°.a « A o weo ,°m i ,roo L POST = 16.42 nrxa«:rlslrM+w�^Mml m%« nn:«:. nn LOAD REMOVED = (0.65)*(0.85)*(16.42 LB)wOF(O.65)'(0.21I542)'(16.42LB)=2.299LB e_,rYsl... i �iN ,Ou9 = 9.07 LB LOAD REMOVED > REQUIRED REMOVAL °w 9.07 LB > 8.96 LB BIORETENTION FILTER A BIORETEN ION FILTER IMPERVIOUS = 0.41 AC. Im STORMWATER TREATMENT (POLLUTANT LOAD VOLUME REQADREA VOLUM REQ D= REDUCTION) MET PER DCR-VSM HANDBOOK ( 0 41AC)*(43,560SF/AC)*(11N)*(iFT/121N) (C.59 C)*(43,560SF AC)*(11N * 1FT/121N) / ) STD.3.1 1 = 1502 CF = 2145 CF ���v•=w»�� VOL. PROV'D WITHIN FACILITY = 1654 CF VO PROV'D WITHIN FACILITY = 601 CF .,<W«9....nP. n.« �,, ,w �a WATER QUALITY VOL. ELEV. = 525.00 W ER QUALITY VOL. ELEV. = 52 .50 BOTTOM OF BASIN ELEV. = 524.00 B TTOM OF BASIN ELEV. = 525.5 I � � O 7 0 I W 4 Y 00 rse«wwaa-.n.wawa...n-. z 0 W ul U Pwpwn- wax Cak xnW Pgx,omre°•rrnaoav°rxan wePc ���� ww.uw" an ane..r, 8: i _ h 0 noo man N z.a ? 0) cj r r o ... W BIORETENTION FILTER C Y IMPERVIOUS AREA = 0.40 AC. VOLUME REQ'D= (0.40AC)*(43,560SF/AC)*(11N)*(iFT/121N) 1452 CF $ VOL. PROV'D WITHIN FACILITY = 1519 CF WATER QUALITY VOL. ELEV. = 524.00 C BOTTOM OF BASIN ELEV. = 523.00 C SDP 2009-00034 s REVISIONS REV DATE COMMENT BY 1 1221/18 AMENDMENTAH JQR KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast. It's has It's the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.'. V162083 DRAWNB, '. DSH CHECKED BY. JQR DATE: 1221/2018 SCALE'. NOTTO SCALE CAD I.D. '. EX0 PROJECT'. SENTARA WPO AMENDMENT FOR r Wawa- LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA BOHLER ENGINEERIKG 8 BLACKWELL PARK LANE, SUITE 201 WARRENTON, VIRGINIA 20186 Phone'. (540)349-4500 Fax: (540)349-0321 12/21/2018 SHEET IiLE STORMWATER QUALITY ANALYSIS SHEET NUMBER: 5 z o 2 y 0 # $ z 3 0 01 111-i a 1 ] � ~ , Co--�� G ., 1„ . , I I -- _, 1 `;,' f ,- I't if,V w r_k _ _�- i -- __ _.._ -- -' _ _ - r 1 s ._ -_ - ;_ I? 4 I O W C7 N $ o i _ ,cg{, a .. ,. -,:,._ ., ". -, r. t ` I ✓, ". t .. -_ .._. _ ,,, A .,i .',, r ♦ .,:,. .... =1 ,.,< .,- ..,, ,. -.. _�0000000000 ,.-M_�.:... -...., _ ,. _ _.. 1. ,1 .. __. - - .al- _ 1.I j f"' __ __" I .... p'- __ - - 1 1. 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I O _r- `` , ; � tv - ' d __. > __._. _- I� Iwj } } PROJECT No.: V162083 CHECKED ED BY: JWN BY: DQR DATE: 12/21/2018 L. j i fli NOT TO SCALE %.. .'00 i 4 j• i `• I { , , CAD I. EXO I � • =' - O i" ', -11 2i ,_1 , I i i "".�/ -�" t ' ; lllloll� �. y: o" I r I ,t � : 000 1. d' W Q Ll W m 0 PROJECT: i _,.� _ •�00 � ULTIMATE BUILD -OUT o W � / r. EXISTING DRAINAGE AREA , - .,► '.�" .; A DA= 3,1 1 AC• B DA= 2.01 AC ' _. �,,-.,,' / _ .' F' .�_ ` 5 e , i s 5' r, �> j G s �I, �� �,-: L , DA 33 AC V , r`I � �'! a III , f l 4 1 " I _ t - I (�) �oR ©, J 00 W ..V_ ,,. C- 0 72 C- 0,44 -.., :" ,.^°' / "-„ a h 1 ,_.. I ! i -` (I 'I fi -i''^ h I.. a r r h s-' .7:1 �" ` t± '' d 't l� - i� " ! `J ) i� .A r w I'r i{ � -J '. CI . J J ± �s % If -h! V 13 _� I3 i ...i S-r..,+' 1 i A _ j d Ft _,:a? L 'I IS I� II d - - t_ i J .C. 0 sty a07 5 _ ____ - ,.• , - � -, , _-r- I #_ I�, :w_� R� v, I . ♦ 0001, T = 13 MIN Tc= 10 MIN o'''•i` -` I T^C - 1-4 MIN __�_ ° •boo ,v►" /i, - __ . __^._- ,_ M., _, - . = _ :,_ , - ._ -- -_ - _ . _ _ _ - r k 1 �; �7 "' °' " ...: _u _., . `a r` - LOCATION O � SITE r� r .' r I E.ii I 'r lII'- . .iU t `i I� 1ST ay�{,,,! 1 W E � 'S I{Il' v Vi J Y} 11 ? J J J SEMINOLE TRAIL AND PROFFiT ROAD ., STORMWATER QUANTITY CALCULATIONS �y�Ai ;.,✓ �I J ' 11_,',� � r, II�;ItiI.IIL,1.--' �� �'S�`?��It�''','! � y�'x��� j�'^-tY� , JI 1011n %s�E�1,��;)PNJI1�Ij � �' � Q' 0 N ALBEMARLE COUNTY, VIRGINIA j g y:.tr, ,, r' V>i yJ } 11 II... ..,I 9 i) f j - �. �- 4'} \ �� : ,) Id a It v1 1 I J i f- `- POINT OF STUDY A: ,,._ r .. _.�_,.:-_= ,,, t -_ _ � a ,-�_ _. , _-- _- _ .,_ _�, _:_ . _. __ _ , ,_ �.:.'_..: I9 •,._, _ _-._ _ 11 ,, MODYf'IED RATIONAL MET - -_ � , .z-�.,, ,_- ,.-_. --- MODIFIED RATIONAL METHOD MCDIFI? D RATIONAL RITHOG T N N "l � „'"� ---- Gra h.ic.al Summar far iSaYimurn F,e uire �° y q Stu a P ---- ---- Graphical `summary for g_ P 1 Maximum Required S=ore e ---- --__ � q' g ^,r:ai:hir 1 $umr�ary 1hr Max;mm Required Storage ____ Z) V) "l C3 0 �"R EXISTING CONDITIONS; Q2 = (0.72)(3.68 IN/HR)(3.1 1 AC) = 8.24 CFS ��thDa = ks�th°d Meta 1 Q10 = (0.7�)(4,84 IN/HR)(3.11 AC) = 10.84 CFS 5" h �` � oao J Q100= (0.72)(6.34 iN/HR)(3.1 1 Q - �l.F=. * 1,R1.6=^a CO;1JBr510R{ Wh'4T0 G4i11V@r514T1 = �JO�tI AC) =; 14.20 CFS _ ! {1� A .3�J�J1 Q = CS=: k URitS GORV2Y.'S10n1 WI"iv're CGRtTeS:S1t)[t = �.�.J�� i �1� 'C 3���� Q =. f1A :: UCIt1L.`"a pant;C.'CS1e.�=1, IhISGit'4' ('.J.J�'l•�1Oli - 'ti����' % (12 * ���JQ� I W -'- W 0 V,'. Z E N G I N E E R I N G r ^� c �y p'� ON DI I(JNJ� Q.1J� 'F� C Q t> K__ __ AkkA kA,t*x-*kkk kk*xi*;4**+ckr***k*k*xkk,Ihk9,xkvF*kk,4 +: k,4k k*k.rth KrI`PURN P?IQC7ENCY: 2 yr I Allowable <7utflow: # .:� ,' :F :u *�k* *^k**:4 k-kx Ar*,k*k*** *k:F**x {***k*x**k*k*x*d k:k*k#Jc :4 sc*d*k*k A'kkkkx kk:4k kkRv*:kk A i•x it * * � * 1:>i,yk kk},i,k,c kg A•x*k49,•ie k�-kkkkx,F*.:kkkk'hx,l•d+t*rF 1t k*xr4 �,kk,F 4x*-k *+4k kkx,Fi}kk*,k*Y** 3.64 efs �k * x�t'URN r'RLQIJENCY. _0 yr ( 111iowa le vutllew: ?.75 cfs * RgTugN �'R,y�Iy,E�;r v; 1 13 �r I Allowable Outflow. 6.20 cfs * Z' *�.. �"'� ~ - m 28 BLACKWELL PARK LANE, SUITE 201 RE -DEVELOPED f G -� * `C' Adjustalent: * t , - WARRENTON VIRGINIA20186 �+ C ------- _ .__-------------- * Peak Inf7 ow: 6.05 cfs -----------------**---- * * Peak Inflow: 6,91 cfs -___---_____-________ ,---------------_--------------------------------------------------_* * Peak IuF15.76 Ls * Z ^�, `' Z "I ca Phone: (540) 349-4500 Fax: (540) 349-0321 Q("} 1 00= 0•00 CF 3 * .HYG Pile: 02 yr A * A A kA h..4AA.AkA&A.1..,AAAAA:FAk k.A AAA AA -. A_ k A-kk:4 A-k LA --A- k,A -� *xk�:,4kJ:*kdrx * * .HYU File: 10 yr Y13 k9: .4'k'k :4 *,�r ,4}y4kJ. fi-'kk*;kx*,k*',Fk**,F*}kk*+rkkk*Ak<**k,,kA-k:i^kk:kk,Fkkkz-k-kkkkk:k r:k-:F ,4kk#4k#r:kk*:k ,k -k ,4 L�,U �r * R::'A-h'hk�A*lxA td tik k*i-:J.-t.^k*k:Fx-J.•*•kd;iir'ric*x#*,4kkk*�kx•*-**kir******!i*****k**=rk;<!: i,F �i� /�^\j "�, " 00 VAaBohierEng.com RLr- 1 -- Z0) _ _ 0 l O�L POINT OF STUDY B: Q. Td - 1.0333 hrs 1 j------- Appron. fluraticn fr, M.sx. Storage ______! Ei�turn Fr?q: 2 yr Q I Td = 1,4500 hrs adj.fa:tor:l.OGv' f---- -- AGprox. Darat_on for TMlar:. I Return Freq: 117 yt' I Td = 5.2167 hrs I Return Freq: 100 yr Storage ------ / Cad .tactor:1.50p /----___ ApFrox_ fluratioii for Max. Storage------f C adj.factor•1.250 Q W �+. ,..,� IN/HR)(2.01 AC) = 3.fi - CFS i i i i I I C) 4 .0 EXISTING CONDITIONS: Q2 = (0.44)(4.12 I Tc= h^s I Q 1 0 = (0.44)(5.37 IN/HR)(2.01 -7 /� 1 ^c= »2300 hrs AC) -= 4./ 5 CFS I T = 3.5824 i7llht .2300 Area = 5.330 acres T = 4.?1Q8 in/hr { Tc= .2300 hrs i j Area = .330 titres I I - y_1920 ir7%::r I 7irea = 5.330 aczes �`�� E� Q100= (0.44)(7.01 iN/HR)(2.01 AC) = 6.20 CFS I = 1 .� ef, I •1• Weighted G - .??0 1 , Q = 19.51 cfs Adjusted C = .`?"!0 1 - I - I iae_ghtbd C = .770 j v = 32.D3 cfs I Waig:tea _ .??o I Adjusted C - .770 I' I Adjusted C= .963 I,� ic. No.052544 �; RE -DEVELOPED CONDITIONS: __. I . I. _ _. 1 I Required S orage : __, 1 - __ .327 ac-ft I 1 I • I. I I I - RFqulrt�d 5tc.age I I a Required Storage 1 ?d- i.U333 hra I -- .499 tic-f4 L'd= 1,9500 hrs , -- 1.519 tic-ft I ^d= 5.215'! hrs = 1.4616 i7a;hx I I 1 i = 1.6708 in/hr T = 1,307o iaJhr U I N f` w 12/21 /2018 j�� � ,' ��, �S', (W%(� UNDERGROUND STORAGE) Q2 = (0,77)(3.5fi IN/HIR)(5,33 AC) - 14,fa1 CFS I I X X} X X X Y.IX X X x X X X X X Yt X ' ' Q= 6_ob v�8 f x X 2S X X X MIX X X I X X X X X X X X Q '= Fi,91 CfS I x X X X X X X X X :� X X X X X X X X Q EJ.76 CfS ^ y m W -".. •'�NAAAAA� "�,' E�j Q10 = (0.77)(4.69 IN/HR)(5.33 AC) = 19.25 CFS h X X X a I Q 1 00= (0.77)(6.1 N/H �n �y �y U f+ C I 3 AC -- 25.28 CFS R)(5• 3 ) I 7 i o Q - 3.3'1 cfs 1 Ix {Iallow.0utflcwl I x a = 4.75 cfs I 0 G - 6.20 cfs11 - o IX (Allow.0' tflow) I x o- Ix„„ {Al_vw.Gut11uw1 m cu a � SHEET TITLE: _ K . .,.,(�._._I I . x 0 ���TTpsCti 1 1 x o i X a 1 , x a I Nc�ro-���L>J co 2 (WITH UNDERGROUND STORAGE) Q2 =[�.29-.., CFS` i X U 1 X O ( i x i x :.1 fdC)T T'7 SCALE 1 X -,----------- X O I or U STIOR WATER - �; I Q10 _ {6.91 CFSI Q 100= 16.76 CFS' 10 ________________________________________________ ____ - 1,1249 1 X 10 ____________-------------------------------___________________---,____________ hr'5 T 1 x 1 a i X ------------------------------------------------------------ 1 _: ??n hrs T 5.23:E3 hrs -'T � w c U ® �V f'UANTIT JL ANALYSIS POINT OF STUDY B CAPACITY = 53.5 CFS (EXISTING 24" STORM DRAIN) SDP 2009-00034 SHEET NUMBER: _____ __ 6 v ,.I (_ H:\161V762083\DRAWINGS\EXHIBITSSSENTARA WPO AMENDMEN_RV162083EX6.DVJG PRINTED BY: DHALSEY 12.21.18 @ 12:43 PM LAST SAVED BY: DHALSEY 0 1/ 1� uQ 0 N K, E N U) 0 C/) 011 4 V 4 01 LIMITS OF DISTURBANCE C0NT7?4C16R TO - RESET SIGN M ITH S, MDE 7C , %4350" AREA=O. 15 AC / N5001 CON794CTOR TO—, RE-Sr7 SiGAI Y/M-i CN=89 T, GRAOES Q1=0.47 CFS Q2=0.61 CFS Q10=1 `01 CFS PiI V: J2—,38 AIRPORT PIA I-ZC 08. 4622 PGl 319 IJ-5'El RETAII STORLE: d� o d !! � 04 wr A �1_ m AREA=1.32 AC 1< < CN=89 1< < Q1=3.58 CFS < Q2--4.63 CFS 1< Q10=7.73 CFS I > u 0 )DORT101v W NZ 0 0,� 0 ,4 f AREA=0.28 ACt i0 0 Z" CN-95 ✓ Q 1=1.06 CFS �`��� Q2=1.31 ut-6 Q 10=2.04 CFS PIM J2-37C MON PROf-T-17T LC C0 PYAtGREL'Al CO RFAL f STA 1E TAX I)CP 0 R 3790 PG. 692 U,SE RfTM STORE ij �LOD 0 i 014, ni 0 �° O' ,° O AREA=0.05 AC CN=80 0 Q1-0.11 CFS 0 i 0 Q2=0.15 CFS rtr Q10=0.28 CFS I TRACT 2 D. -8. 661 PG. 7114 F 0 ? II 0' '' 0 t �� 0,�, 000 ._0 0 u 0/1 O 0'Ju Z oly < ov�.' 14 - P(,7 Z:: MICAZ qicF _2`ll(!��, AO.,A/ OL 14LO IMIQI��,, fFWFA7) 0-1, u O 0 0 u ` y ti �O / LIMITS F DI U AN E, 11 �\ U 0 0/ 1 5 0 0 0 --+0_ O, 0 0 y OD S T (D 0 0 t:,"ItC, 0 0 u, 0 0 P7SAW 0 0 012 ff (000000000 01 0 ����O�O�O� , �O� l' O 0 O 0 0 O AREA=0.89 AC p!, 0 4 EO mat:* CN=93 u u Ul u 0 00 0Q1=3.04CFS0 0 O 0000', 0`111 �1_1)10 u 0 0 0 0 011 — 0 1 Q2=3.81 CFS 0 u 0 u 0", u ui 0 0 0 0 0l,;0Q11 u 0 u ,--D 90 Q10=6.05 CFS u 0 C_� I C_� 'n C5 Z�- -IF r__� 0 0 U 0 C) CY"i C-Z 0% ui plj 0 � Off, �00 ", O P01 1 O Cl 1 l UN ON ON AD O 00� O 0u // 0� 0 /O O O O O u 0 0 O 0 0 0 Oa Q ,u 0 u 0 If i 0 0 u 0 u 0 0 uOO u0 0! , U'l 0 \'U ul, u-- :_ t O Y / O O O 0 Il u 0 41 O O 0 �0 c)00 F-V 0 0--�Il- 0 10 , r 3 O . ul"),?, �\o u 0 'IV X u 01 0 u u/1" 0 u I0 U (D U 0 U /U, LO J , 110/1. - / 0 u IrAl/ Slop H /0 0/ A-- u ull u "IrpNop. vu I 11 59,60"w 7 T16y 13.43 0 10 r ��r ,f f-1 O W-NAT 0 O _,\0 0 �O: 0. 11L 4<<:�� t, - ,,O ``/ � �/lam / 11 Z, 011 PROpp OA R0 - H10/1 �49 J, 01 0 0,` j LEGEND OOOv v TRACT 2 R 8. 661 PG, 744 0000 0000 - - NOTE: AREA TO BE DISTURBED FOR UTILITY TRENCHING AND WILL BE RETURNED TO MANAGED TURF _4 NO CHANGE TO EXISTING PERVIOUS GROUND COVER WITHIN OFFSITE UTILITY IMPROVEMENTAREA. 20 10 5 0 20 1.1= 20' EXISTING MICRO BIO-RETENTION AREA EXISTING IMPERVIOUS AREAS EXISTING MANAGED TURF WAWA WPO 2016-00056 REFERENCE SHEETS PROVIDED FOR REFERENCE PURPOSES ONLY. REVISIONS REV DATE COMMENT BY 1 12/21/18 AMENDMENT#1 JQR KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.: V162083 DRAWN BY: DSH CHECKED BY: JQR DATE: 12/21/2018 SCALE: 111=20' \.CAD I. D.: SWO PROJECT: SENTARA WPO AMENDMENT FOR 07 v - vvV D Wa I,,OCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA T BOHLIER 1' E N G I N E E R 1--4 G; 28 BLACKWELL PARK LANE, SUITE 201 WARRENTON, VIRGINIA 20186 Phone: (540) 349-4500 Fax: (540) 349-0321 DRAINAGE PLAN SHEET NUMBER:] H:\161V162083\ORAWNGS\EXHIBiTSXSENTARAWPO AMENDMENT\VI62083WPO,DWG PRINTED BY: DHALSEY 12.21.18 @ 12:43 PM LAST SAVED BY: DHALSFY X N 0 14 AREA=0.01 AC CN=98 ea T, ��� �� Q1-o.o4 CFS Lu Q2-0.05 CFS oo o z Q10- -0.07 CFS 0 U) > < � �,QP�O ��'e��o Ak 0 ,drJ 014 �� � 1 0 9 f—PROP OFF -SITE —LANDSCAPE EASEMENT li n 0 R,� cc @ O©Oy -6 Z�l Jer E 4`1 0 LIMITS OF DISTURBAN /E—tc Q II 01 PRORPRIVAT CONSTRUCT14N� 0 c AREA=0.02 AC CN=80 Q1=0.04 CFS Q2=0.06 CFS Q10=0.11 CFS O} O IMI OF u_DIS1 0 OP, SAWC 0 0 0 0 0 u 0 �Q 0 0 Pf 4 T EMP. OFFSI� >RYCTIN I CTI N ES m 1:549ML/_ lu 0 '�`_"�L r U �&,Ol` WORK 0 u u o D u\O O u u u u 0 u u u 0 0 u 0 0 P.(SAW UP 0 . 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TW530.-0 C H iTC 71 .60 RICH 2T46 �-� 527.70 C 51121 63 W .41 APPROX 20 EASEMENT D 3396 PG. 75 7.47 x I T4J TC 5?7.41 C !� 51747 ". u t. r ]EWER EASEMENT PC 511 k REF IN PC. 75 rNT v Ixavelc 20 10 0 20 WAWA WPO 2016-00056 REFERENCE SHEETS =zo' PROVIDED FOR REFERENCE PURPOSES ONLY, z OUI �z za U O �"� C�ppippp®� u F a u � V zd mw]w U FL REVISIONS REV DATE COMMENT BY 1 12/21/18 AMENDMENT#1 JOR KNOW WHAT'S BELOW ALWAYS CALL 811 BEFORE YOU DIG It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION PROJECT No.. V1 S2083 DRAWN BY DSH CHECKED BY: JOR DATE: 121212018 SCALE: 1-20' CAD I.D. S. PROJECT: SENTARA WPO AMENDMENT FOR W5uh" LOCATION OF SITE SEMINOLE TRAIL AND PROFFIT ROAD ALBEMARLE COUNTY, VIRGINIA ® BOHLER I !B BLACKWELL PARK LANE, SUITE 201 WARRENTON, VIRGINIA 20186 Phone: (540)349-4500 Fax: (540)349-0321 JO E ic. No. 052544 12/21/2018 /oNA - SHEET TITLE: GRADING PLAN SHEET NUMBER. 9