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HomeMy WebLinkAboutWPO201400068 Plan - VSMP WPO VSMP 2014-12-153 Q. U UI 0 0 aci E v aci c 0 a a� to U 0 o� ,c 0 0 N U c o� 0 N i E - SHEET N0. DRAWING N0. 1 OF 16 C -1 9 OF 16 C -9 10 OF 16 C -10 11 OF 16 C -11 12 OF 16 C -12 13 OF 16 C -13 14 OF 16 C -14 APPENDIX C -12A FARMINGTON COUNTRY CLUB SOUTH SIDE IMPROVEMENTS VSMP PLAN (SEE SITE PLAN SDP - 201400060) VIRGINIA TITLE COVER SHEET EROSION AND SEDIMENT CONTROL PLAN EROSION AND SEDIMENT CONTROL NARRATIVE & DETAILS EROSION AND SEDIMENT CONTROL DETAILS BMP ANALYSIS AREAS BMP CALCULATIONS HYDROGRAPHS DRAINAGE AREA ANALYSIS ABBREVIATIONS ALBEMARLE COUNTY, AFF ABOVE FINISHED FLOOR GSV GAS VALVE R/W RIGHT OF WAY AHD AHEAD GV GATE VALVE S SIGN ARV AIR RELEASE VALVE GW GUY WIRE SAN SANITARY SEWER BC BACK OF CURB GZ GAZEBO SBL SOUTH BOUND LANE BCB BALL CLEANING BOLLARD HB HORIZONTAL BEND SD STORM DRAIN BF BLIND FLANGE HC HANDICAP SQ SQUARE BFF BASEMENT FINISHED FLOOR HDPE HIGH DENSITY POLYETHELENE S.S. STAINLESS STEEL BM BENCH MARK HK HOOK SSMH SANITARY SEWER MANHOLE BK BACK ICV IRRIGATION CONTROL VALVE STA STATION BOV BLOW OFF VALVE ID INNER DIAMETER STD STANDARD BS BOTTOM OF STEPS II INVERT IN STL STEEL BW BOTTOM OF WALL INV INVERT STIR STRUCTURE CA CRAB APPLE 10 INVERT OUT SW SIDEWALK CB COMMUNICATIONS BOX IPS IRON PIN SET SYC SYCAMORE CATV CABLE TELEVISION IPF IRON PIN FOUND TBA TO BE ABANDONED CED CEDAR JB JUNCTION BOX TBR TO BE REMOVED LAT LATERAL CG CURB & GUTTER LEY LEYLAND CYPRUS TC TOP OF CURB CIP CAST IRON PIPE LF LINEAR FEET THH TELECOMMUNICATIONS HANDLE CL CENTER LINE LP LIGHT POLE TR TREE (SPECIES UNKNOWN) C.L. CHAIN LINK TRANS TRANSFORMER CM CREPE MYRTLE MAP MAPLE TS TOP OF STEPS CMP CORRUGATED METAL PIPE MB MAIL BOX TW TOP OF WALL CO CLEAN OUT MH MANHOLE TS &V TAPPING SLEEVE AND VALVE CONC CONCRETE NBL NORTH BOUND LANE TYP TYPICAL CPP CORRUGATED PLASTIC PIPE NIC NOT IN CONTRACT UG UNDERGROUND CY CUBIC YARDS NTS NOT TO SCALE UGT UNDERGROUND TELEPHONE LINE D.I. DUCTILE IRON O.C. ON CENTER UP UTILITY POLE DIA DIAMETER OCP OIL CAP UPT UNDERGROUND PROPANE TANK DIP DUCTILE IRON PIPE OHE OVERHEAD ELECTRIC UON UNLESS OTHERWISE NOTED DW DOGWOOD OHT OVERHEAD TELEPHONE LINE VB VERTICAL BEND EB ELECTRICAL BOX OHTV OVERHEAD CABLE TV LINE VCP VITRIFIED CLAY PIPE EL ELEVATION PB PIPE BOLLARD VHD VEHICLES PER DAY EM ELECTRIC METER PE POLYETHYLENE W WATER ELEC ELECTRIC PGL PROFILE GRADE LINE WL WATER LINE EOP EDGE OF PAVEMENT PH POOL HEATER WM WATER METER EOTL EDGE OF TRAVEL LANE PROP PROPOSED WS WATER SPRINKLER EQPT EQUIPMENT PS PLANTED STONE FOUND WT WATERTIGHT ESMT EASEMENT PVC POLYVINYL CHLORIDE WV WATER VALVE FF FINISHED FLOOR ELEVATION PVMT PAVEMENT WWF WOVEN WIRE FABRIC FH FIRE HYDRANT R RADIUS YD YARD DRAIN FM FORCEMAIN RCP REINFORCED CONCRETE PIPE YH YARD HYDRANT FL FLUORIDE RO RED OAK YDS YARDS FOC FACE OF CURB REQ'D REQUIRED +628.35 SPOT ELEVATION GALV GALVANIZED RT RIGHT 30OAK/45 30" OAK WITH 45' CANOPY (DIAMETER) NOTES: 1. ALL ABBREVIATIONS SHOWN MAY NOT BE USED. WPO- 201400068 i i� IVY RD. 5 o� hi00 OLD s�Ti�'; v VICINITY MAP SCALE: 1 " =2000' I l , \ J* . /29 ley o ALBEMARLE COUNTY DEPARTMENT APPROVAL: 29 R APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNING /ZONING SITE DATA DEVELOPER /APPLICANT: ENGINEER: FARMINGTON COUNTRY CLUB 1625 COUNTRY CLUB CIRCLE CHARLOTTESVILLE, VIRGINIA 22901 ATTN: JOSEPH KRENN WW ASSOCIATES, INC 3040 AVEMORE SQUARE PLACE CHARLOTTESVILLE, VA 22911 (434) 984 -2700 ATTN: EDGAR J. TURNER PERROW, JR., P.E. EMAIL: TPERROW@WWASSOCIATES.NET SOURCE OF TITLE: THE PROPERTY AS SHOWN ON THIS PLAN IS THE PROPERTY CONVEYED UNTO FARMINGTON COUNTRY CLUB, BY THAT CERTAIN DEED DULY ON RECORD IN THE CLERK'S OFFICE OF THE CIRCUIT COURT OF THE COUNTY OF ALBEMARLE, VIRGINIA IN D.B. 1263, PG. 668, AND IS INDICATED AS PART OF TAX MAP PARCEL 60E— (2) -1. SOURCE OF TOPOGRAPHY: DATED: COUNTY, STATE: MAGISTERIAL DISTRICT: WATER PROTECTION AREA: DEVELOPMENT AREA: JURISDICTION AREA DEVELOPMENT: TAX MAP /PARCEL: ZONING: SETBACKS: BUILDING: PARKING: EXISTING USE: PROPOSED USE: BUILDING HEIGHTS: LINCOLN SURVEYING 632 BERKMAR CIRCLE CHARLOTTESVILLE, VA 22901 APRIL 15, 2014 NAVD 88 VERTICAL DATUM ALBEMARLE COUNTY, VA JACK JOUETT IVY CREEK (DRINKING WATER) N/A WATER ONLY TM 60E, PARCEL 2 -1 (PART OF) RA (ENTRANCE CORRIDOR OVERLAY DISTRICT) 25' FRONT, 25' SIDE, 35' REAR 20' FRONT, 20' SIDE, 20' REAR COUNTRY CLUB COUNTRY CLUB 35' MAX. NOTES: 1. NEW FACILITIES WILL BE SERVED BY EXISTING DUMPSTER LOCATED AT EXISTING LOADING DOCK. 2. EACH OUTDOOR LUMINARIES EQUIPPED WITH A LAMP THAT EMITS 3,000 OR MORE LUMENS SHALL BE A FULL CUT —OFF LUMINARIES. THE SPILLOVER OF LIGHTING FROM LUMINARIES ONTO PUBLIC ROADS AND PROPERTY IN THE RESIDENTIAL OR RURAL AREAS ZONING DISTRICTS SHALL NOT EXCEED ONE —HALF FOOT CANDLE. 3. PROJECT AREAS: A. ADDITIONS AND RENOVATIONS PRIMARILY TO THE EXISTING GRILL/ RESTAURANT AREA. B. DEMOLITION OF THE EXISTING LOCKER ROOMS ON THE GROUND FLOOR. NEW CONSTRUCTION OF THE LOCKER ROOMS ON THE SECOND FLOOR AND CONSTRUCTION OF A CHILDREN'S PLACE ON THE GROUND FLOOR. C. NEW ENTRANCE TO THE LOWER PARKING AREA. D. EXPANSION OF THE LOWER PARKING AREA. APPROVED by the Albemarle CDUnty Wpaltirlity Cie ", lr el. '�)f De��rtrrteni Date _ 1 Z� 15 /� File vSMP 1 REVISED PER ALBEMARLE COUNTY, VDOT AND ACSA COMMENTS. RU 10/3/14 *w##0000 _ DESIGNED BY: PROJECT. SET REV. NO. 2 REVISED PER ALBEMARLE COUNTY COMMENTS RU 10/22/14 ,ar�,� �1I Oh ��", JDB FARMINGTON COUNTRY CLUB 3 REVISED SITE PLAN RU 11/13/14 �` ENGINEERS DRAWN BY: SOUTH SIDE IMPROVEMENTS VSMP PLAN 4' SURVEYORS KTM ALBEMARLE COUNTY, VIRGINIA DRAWING NUMBER. -_ 4 MODIFIED GRILL BUILDING OUTLINE PER ARCHITECTURAL PLANS RU 12/08/14 $ PLANNERS TITLE: DIHR BY. COVER SHEET C• -1 Lic. N0. ?67 G� �2 AssOCIATES DMJ l / 1 ib Bo rg VA 2- 3040 h.lwt dl' Squaw 211 WWA NUMBER: FILE NAME: DISCIPLINE: LH. CALE: 1 SHEET NUMBER: Lyudhburg VA 2 -1502 Cha�luiteavtlle Ve \! ?Jil ` DATE: � s10 N A L +� Phone -43 4 316 6080 Phone 43-4 984 2700 CIVIL N/A 1 o f � 6 NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE f` ♦�ttt w«tv tva�a5'a`t`ttea net 214045.03 404503C—CS VSMP.dwg N A 081081.1-4 3 'L7 I Z W UI O E aci Q v V 0 v� c •E L2 O N U O v>, N i 64847 _ / i /' - % DR PD PD 1 _ , / f 1^/ACK I r,WS / ' W f_` 4 1 \ 71 �Q DR • THRESH PO / / /' / S ITYP I iC FF ON PDC C, BRICK 646p40 \ PD U \ ( yV El M C GRAT I R - ❑ DR PD ❑ DR DR \ \ \ /' 6 314`30 / LJ LJ TOP PD PD r POOL , / O 645 Ile,'- WS p \ r 4 14;'BXW7D '� DR LP p DR p p ;.V 4, L _ f C� ws'c' ® 6 6A7� . 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CIP7 \- r) - I _� - - ' DN ' E APC T (MATE 1 ' - - -- _ - - - - (`)?Gl STON LP / ,40R0 / I R F MIf1GT0 / F 593 I WALL 5 - t^'.1^„✓^.vi; .ry �.- - \ 645 39 FE ANCE ,� , �� I I PO Y - \ �F OVERHANG '�`�- / -x -x �'�� I 3490 II ASPHALT f �N ,Y �x /f 3SE,1CY__,.`' \J EROSION AND SEDIMENT CONTROL LEGEND / n j / - _ GR SS - - - _ - 6MAP /14 ° 0 1 V / 1 -% ( �/ APPROX DIRECTION OF - i,d_ 3 G 8 _ Cj) ,) / / ' ` 0 ---- -- ---- ---- -- - BRI INACCESSIBLE I __ PTORM DRAIN PIPE - _ 62953 �< `-- Cd BRICK -f / PER FARMINGTON- / 36BIR�I Ou MAINTENANCE \ - / THRESH ` I THRESH - ( ,`� APPROXIMATE LOCAATION OF ASPHALT 62792' , / 'I i5DW /15-/ -O - I/S / /'_ l -SANITAR.Y SEWER'LINE AS II PARKING \ '620 3 /rrr✓✓✓ U�- \ / `\ L3,I T -PY, FA_RMINGTON 1 STOP STONE �° I TOP /,- - -__ -_ MA NT NC�� II 62/8 0- / IPY `l.-�\ % L -GOL FRAME T09 8' / IC� / \ / II - GOLF C7�RT SHED tjJ / INV 633 46 r \ \ 1 I _ O I THRESH RICK PATI l '� 1 MA, I ROCK WALL z \ - 63021 FF 'T �� -�/ \{ / \ / ` \/ 9'� ` h? / II 628 i, X627 63 FF _I_ -_'/ SSMH� - t 1L - -� I 62116 - -_ - I STONE 11 \ I PLANTER PVC / T _ -` LP 4YH I BUILD NG / �� rr✓iIS! \ 4 "PVC -- ICV,� - UM 11 - 625 ,/' VI A APPROXIMATE LOCA ON ilw �, 1 1 /�� �3� S,�CA64 3MAi�1 m WALL °F WATERLINE PER { URB "� / ' �� J tt - _ 10" 62$ 61 / 7 7 / II B2'�,9 X11 FARMINGTON MAINTENA E - \ H / ' �\ , '11'l I �� ; O SLATE BRICK Ij - 56 - -Yj ` -�I\ PATIO TIO TEE BOX STEPS ` / / 1 I /WV it ( "S II W \ - I� OQA \4„ \\ 628, 2 / I T RESH / PB ) - // ASPHALT SANIgY �1) .I ` J \' 6 7 69�' ' _ ' ' / ) PARKING I_- SEWS LINE (7YPJ S CURB �. I' OVA \ CQ i _ .v, _ \ /30 3,4\4 10 ` 1 / _- / GRATE - II�OXWOODS \'1 D, ✓30� 1 % /CB /O / I // / ' I TOP G '' 3 _ ❑ 0' CM 62160 TRANS n -` �O -x lji1 �O II ASPHALT----- c� �. _ _ / UPT \AO'' - OhF WM O PARKING '� � - C,C��p BC V / / / LP �1 w / / I 2 -8 PVC II /� APPROXIMATE LOCATION - ° rO v, - - _ gRl- !'"I JQ 10 6169 _ nf�1- �� RAN GW _ OF WATER SERVICE PER L �_ - -- PB l� PLA TER /�� o - - - - / TRI -T 30 II 618 37 I i - ' f I r' , <i I - - _ FARMINGTON MAINTENANCE- _ IS / r 4i_ O I o , - SSMH CURB , II 6MRP J�.. G _ GW II ED - -- -- 6187 - _ --TOP .it- __ 23-8 'AM P/ m -- - ---'-I °_ - _ 62789 VY �� ,� ED/ _W I P F ,s2 o m -GAZEBO ' _ .r r) •'3. �3 .3 �J \3 - _ - ICV _83 ( C_ PP PQ - OHE OFT OHTV \ r_ .- r/ / APPRiOX LOCATIO OF r+= - _ LP CURB __ - x - - }fi x BQAfjD .FEN x `.\ / 12C , '- j i ='-g_ --- _ - - -- I IPOS$$IBLE) STORM IO - - K x GE I '_r i " !� DRAY, LINE AS t ) {{ -0-0- -f1_ Q 620 79 J8 BL D /30, �'ll ' Tex x-=- - -x-L \ _ -" WVIne1 _ - ` - I INDICATED BY t V {{ II CURB = 0 62211/ \\ _ ;t CED /25 �x �S _- r" - \ GRATE p .76CED%25� - l6CED /25 - _ 624"37 - OCED /3 T FARMINGTON ( -- /J� Q S M"NIT EN ANCE j-� % {{ ( II TOP - % T -` - 622=11- % _ 623-2 i - 62508 -�` �Y4CED /25 W I / - 621 25 GRATE _ r / _-06S TELGW 3 11 r {{ \ ,✓ I 61797 / - \_ ���- -- "/ /// : � / \ \ \ / I 1O , TOP li ' - �'I'��_ ED \ 619 05 II 621 57 - / 5s�33 ll_= = -j ��� 61905 `TE R� (] f 4 r I I 243yj -' 23,99 25cEb1 L , l "'r r -'� / _ _ �.. a L / \ l\PR VATEI- X OCE 35- —j20C 3b Q l' -621,30 -' m �� - VVID / j525 54 _ - 625 0 BUSH- BUS \\ j.,. O__�- � = QI�m.' --_ `� - ""'�"",- �,'�,'T� \ \1 - BUSH / �!!Y _ \ I - J} Z�36E( -74 CE7 26C �1€�547 =t� -- � �.J F AN .FF H! ' -' ^-�--- � \ / � l� 1 _ --_ - "�cr�c�- ..c.., �4 7 P ` �4 € 3 -' I I h ' _ 625 1A c� -' w - �� 62072 - ^%�_T,,"� \ I SPRINT { I AT - LP__ _r- . -:.� ,'" \ .IWV / 1 STORYI HANDHOLE // { TOP T T / "� ---� BRICK S / { �� 617 / /' T FRAME \ II 0-00 n�\ I E BLDG % q F X LOCATI OF ll� �� 1' -.T 3 FF OSSIBLE) STOR I/ �� , 0-100 / / ` R0ST 62198 DRAIN LINE AS I '' ASPHALT t � (TYP / � i INDICATED BY 1 �� 1 ' PARKING I �' / h - -�- 6' WL WV �CONC ` M R TIENANOCE it �� - - - LIMITS OF ,� LIMITS OF A') II - } FH s�AH S EP {I ii - - DISTURBANCE r_ DISTURBANCE ( \ - / 'IV PLANTER �C SH35- 1 S ! ( - ^`\ Y l,zlV ' DBL, `� ED3 / ✓ - -. ;� / ,� 32 ' '1 — ,_ �12- sz 3s 12,5 35 i ii \I V \ __ ,22CED 3 fiza ¢ ` �r� / szr3a tjj ENCH B Oro -- DC 1 - ICE _� - - 22 EIS I EL OUTLE Z"/(C ED 5 % / f -_- _- \ e--, °.• ° • • ' o a• a ,• • / / / �U� / x627;86 \ 1 1 2 / — - - -- 1 ��^ \ 76 N d r 2 i Id UNDERDRAINS AND BIOFILTER CN G LXTI E FABRIC'- MEDIA 'SHALL NOT, BE ' -- - -" p j� __ _ I i�, - TH -35 \ , AREASTALLED' UNTIL DRAINAGE v y z I I 66 — = s °8-6 37 - S ;DEEMED STABILIZED BY ' ` y ° �y DTH THE COUNTY. EROSION ey IC _ S =24 _INCHES- INSPECTOR S F' y y y I D D -� tEQ37 CS3T I I J 1 , �?f1�,E /0 - y 7 ( (� RIP -RAP 'WEIR `_ I LIMITS OF-" \ ` \ \ \ ' DISTURBANCE I 24GED35- / ,' ,I i I % \ / / T -1 3)UPAN3,3 1 a 57 IF THIS DRAWING IS A REDUCTION , GRAPHIC SCALE MUST BE USED SCALE: 1" = 30' I I I I ' / /_ -19C D33 629 22 MEN ;I TEMPORARY PAVED 3.02 CONSTRUCTION ENTRANCE C E ALBBWLE COUNTY STANDARD 3.05 SILT FENCE S F X 3.07 STORM DRAIN P INLET PROTECTION DD 3.09 TEMPORARY DIVERSION DIKE 3.13 TEMPORARY ST �Ir SEDIMENT TRAP 3.18 OUTLET PROTECTION Q P 3.31 TEMPORARY SEEDING 3.32 PERMANENT SEEDING PS ----- 3.35 MULCHING 3.38 TREE PRESERVATION AND PROTECTION TP -^� -- — — — LIMITS OF DISTURBANCE Sediment Trap #1 Design 2.1 4' YMt+ALE_' j drainage area (acres) ( <3) CREST OF STONE WEIR 1.6` trap volumes: GROUND r ELEY. elevation (ft) area (sf) volume(cy) bottom trap dimensions" 603 1404 top of dam elevation (ft) 604 1850 60.3 605 2322 137.5. 606' 2819 232.7' 607 3613 351.8, 608, 4701 505.8 •SCE PUTC 315 -, wet storage: ORIGINAL wet storage required (cy) (67 "DA) 107.2 bottom of stone weir (fit) 605.0 wet storage provided at this elevation (cy) • 1375, slope of wet storage sides 2.1 4' YMt+ALE_' j CREST OF STONE WEIR 'MRIADLE' dry storage: bottom of trap elevation (ft) 1# 107,2 bottom trap dimensions" crest of stone weir 607.0 top of dam elevation (ft) DRY STORAGE 214.3; top width of dam (ft) t� YARVi11.E� WErsrORAGE 4' IMX. (EXCAVATED) FILTER CLOTH ORIGINAL GROUND ELW, COARSE AGGREGAW" C{A5S I RERAN slope of wet storage sides 2.1 weir length (ft) (&DA) dry storage: bottom of trap elevation (ft) dry storage required (cy) (67*DA) 107,2 bottom trap dimensions" crest of stone weir 607.0 top of dam elevation (ft) dry storage provided at this elevation (cy) 214.3; top width of dam (ft) slope of dry storage sides 3:1 top trap dimensions 603 21'x70' 608 2.5 62'x13' MT S 0 O 1 UPDATED AREAS OF DISTURBANCE RU 10/3/14 DESIGNED BY: PROJECT: SET REV. NO. 2 ADDED OUTLET PROTECTION TO PLAN RU 10/22/14 ����H s JDB FARMINGTON COUNTRY CLUB ,�`�' ENGINEERS SOUTH SIDE IMPROVEMENTS VSMP PLAN 4 4 MODIFIED GRILL BUILDING OUTLINE PER ARCHITECTURAL PLANS RU 12/08/14 ~�. �� DRAWN BY: SURVEYORS KTM ALBEMARLE COUNTY, VIRGINIA DRAWING NUMBER: PLANNERS TITLE: Lie. No. -267 � DIHR BY: EROSION AND SEDIMENT CONTROL PLAN C -9 ASSOCIATES DMJ SHEET NUMBER: P °Bg,VA2, ' °4°`' "e "1°`eVA22C1 WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: DATE: �t,. Lyucllburg, VA 2450- Chailullewille, V.l ?2911 Wiry 1 a N A I, �+ Phone dad 316 6080 Phone dad 98-4 2700 214045.03 404503C_ENS -1. dwg CIVIL H: 1 " =30' 08/08/ 14 9 of 16 NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE t ♦ #f ♦ + ♦N `° "`°" ` "' ° "` "11111 V. N/A 3 v N I Z W UI 0 0 i c a� v c a� c 0 a a� V5 U U c 0 o� ,c 0 ui 0 N U U c O .c N i EROSION & SEDIMENT CONTROL NARRATIVE I. PROJECT DESCRIPTION THE PURPOSE OF THIS PROJECT IS FOR THE CONSTRUCTION OF IMPROVEMENTS TO THE EXISTING FARMINGTON COUNTRY CLUB AND A PARKING LOT EXPANSION FOR THE EXISTING PARKING LOT LOCATED SOUTH OF TENNIS ROAD. TOTAL AREA OF DISTURBANCE FOR THIS PROJECT IS 2.73 ACRES. II. EXISTING SITE CONDITIONS THE SITE IS LOCATED WITHIN THE PROPERTY OF THE FARMINGTON COUNTRY CLUB AND GOLF COURSE. THE SITE IS PRIMARILY GRASS WITH SOME LANDSCAPING AREAS. III. ADJACENT PROPERTIES THE SITE IS LOCATED WITHIN THE PROPERTY OF THE FARMINGTON COUNTRY CLUB AND IS BOUNDED BY THE EXISTING GOLF COURSE AND RESIDENCES. IV. OFF -SITE AREAS IT WILL BE NECESSARY TO IMPORT FILL FROM ON OFF -SITE SOURCE TO COMPLETE THE GRADING OPERATIONS FOR THIS SITE. V. SOILS ACCORDING TO USDA NRCS SOIL MAPPING, THE PROJECT SITE LIES ON SOIL TYPES: CULLEN LOAM (19B), HAYESVILLE LOAM (366), CULLEN CLAY LOAM (203C). A DESCRIPTION OF THE SOIL TYPES FOLLOWS: 19B - CULLEN LOAM, 203C - CULLEN CLAY LOAM, 2 TO 7 PERCENT SLOPES 7 TO 15 PERCENT SLOPES HYDROLOGIC SOIL GROUP B HYDROLOGIC SOIL GROUP B K FACTOR, WHOLE SOIL RATING .24 K FACTOR, WHOLE SOIL RATING .17 K FACTOR, ROCK FREE RATING .24 K FACTOR, ROCK FREE RATING .17 36B - HAYESVILLE LOAM, 2 TO 7 PERCENT SLOPES HYDROLOGIC SOIL GROUP B K FACTOR, WHOLE SOIL RATING .28 K FACTOR, ROCK FREE RATING .28 VI. CRITICAL AREAS CARE SHALL BE TAKEN TO STABILIZE ALL SLOPES AND PREVENT EROSION, TO MINIMIZE THE TRANSPORT OF SEDIMENT ONTO THE INTERNAL ROADWAYS SERVING THE FARMINGTON FACILITIES AND RESIDENCES, AND TO PREVENT SEDIMENT FROM BEING DISCHARGED INTO THE DOWNSTREAM WATER COURSES VII. STORMWATER MANAGEMENT CONSIDERATIONS MEASURES NECESSARY TO ACHIEVE POLLUTANT REMOVAL REQUIREMENTS FOR THE PROPOSED IMPROVEMENTS ARE SHOWN AS PART OF THIS PLAN. VIII. OFF -SITE ACTIVITIES IT MAY BE NECESSARY TO IMPORT FILL FROM ON OFF -SITE SOURCE TO COMPLETE THE GRADING OPERATIONS FOR THIS SITE. IX. EROSION AND SEDIMENT CONTROL MEASURES ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED BY THE CONTRACTOR IN ACCORDANCE WITH THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. SYMBOLS, DETAILS, AND DIMENSIONS USED ARE TAKEN FROM THE HANDBOOK, AS WELL AS THE VIRGINIA DEPARTMENT OF TRANSPORTATION'S ROAD AND BRIDGE STANDARDS, VOLUME I, 2008. A. STRUCTURAL PRACTICES 1. TEMPORARY CONSTRUCTION ENTRANCE (CE), 3.02: TEMPORARY CONSTRUCTION ENTRANCES SHALL BE IN ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. A MINIMUM WATER TAP OF 1" MUST BE INSTALLED WITH A MINIMUM 1" BALLCOCK SHUTOFF VALVE SUPPLYING A WASH HOSE WITH A DIAMETER OF 1.5" FOR ADEQUATE CONSTANT PRESSURE OR IN LIEU OF A WATER TAP, EACH CONSTRUCTION ENTRANCE SHALL HAVE A WATER TRUCK WITH 2 PRESSURE WASHERS AT ALL TIMES. WASH WATER MUST BE CARRIED AWAY FROM THE ENTRANCE TO AN APPROVED SETTLING AREA TO REMOVE SEDIMENT. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING STORM DRAINS, DITCHES OR WATERCOURSES. 2. SILT FENCE (SF), 3.05: SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE SITE PLAN. 3. STORM DRAIN INLET PROTECTION (IP), 3.07: STORM DRAIN INLET PROTECTION SHALL BE PROVIDED AS SHOWN ON THE PLANS. 4. TEMPORARY DIVERSION DIKE (DD), 3.09: TEMPORARY DIVERSION DIKES AND SHALL BE PROVIDED AS SHOWN OR AS NEEDED TO DIVERT SEDIMENT -LADEN RUNOFF TO A STABILIZED OUTLET. 5. TEMPORARY SEDIMENT TRAP (ST), 3.13: INSTALL TEMPORARY SEDIMENT TRAP IN THE LOCATION SHOWN ON THE THE PLANS. 6. OUTLET PROTECTION (OP), 3.18: INSTALL AT THE OUTFALL OF THE STORM PIPE AS SHOWN ON PLANS TO PREVENT SCOUR AND MINIMIZE DOWNSTREAM EROSION. 7. SOIL STABILIZATION BLANKETS & MATTING (B /M), 3.36: INSTALL AS SHOWN ON PLAN TO RESIST EROSION AND PROMOTE THE ESTABLISHMENT OF YOUNG VEGETATION IN CHANNELIZED AREAS. 8. DUST CONTROL (DC), 3.39: PROVIDE DUST CONTROL AS SHOWN ON PLANS TO HELP REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES DURING LAND DISTURBING ACTIVITIES. 2 1 ADDED OUTLET PROTECTION TO NARRATIVE NO. SHEET REVISION RU 110/22/14 BY I DATE I NO. B. VEGETATIVE PRACTICES 1. TOP SOILING & STOCKPILING (TO), 3.30: TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION AND HAVE SILT FENCE INSTALLED ALONG THE LOWER PERIMETER. STOCKPILES SHALL BE LOCATED AS SHOWN ON THE PLANS. 2. REFER TO "ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS" #17 AND X18 AND TO "TEMPORARY & PERMANENT SEEDING SCHEDULE 3.32 -D" ON DWG C -11 FOR ADDITIONAL INFORMATION. C. MINIMUM STANDARDS MS -1. STABILIZATION OF DENUDED AREAS: PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN 7 DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN 7 DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE, BUT WILL REMAIN DORMANT OR UNDISTURBED FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. MS -2. STABILIZATION OF SOIL STOCKPILES: DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. MS -3. PERMANENT VEGETATIVE COVER: A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IN THE OPINION OF THE E &S INSPECTOR, IS UNIFORM AND MATURE ENOUGH TO SURVIVE AND INHIBIT EROSION. MS -4. TIMING AND STABILIZATION OF SILT TRAPPING MEASURES: SEDIMENT BASINS AND TRAPS, STORM INLET PROTECTION, SILT FENCING, AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. MS -5. STABILIZATION OF EARTHEN STRUCTURES: STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MS -6. SEDIMENT BASINS AND TRAPS: SEDIMENT TRAPS & BASINS SHALL BE CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED. A. THE MINIMUM CAPACITY OF A SEDIMENT TRAP SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND SHALL CONTROL A DRAINAGE AREA OF LESS THAN 3- ACRES. B. THE MINIMUM CAPACITY OF A SEDIMENT BASIN SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND SHALL CONTROL A DRAINAGE AREA OF 3 -ACRES OR GREATER. MS -7. CUT AND FILL SLOPES: CUT AND FILL SLOPES SHALL BE CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. MS -8. CONCENTRATED RUNOFF DOWN CUT OR FILL SLOPES: CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. MS -9. WATER SEEPAGE FROM A SLOPE FACE: WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. MS -10. STORM SEWER INLET PROTECTION: ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. MS -11. STABILIZATION OF OUTLETS: BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. MS -12. WORK IN LIVE WATERCOURSES: WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. MS -13. CROSSING A LIVE WATERCOURSE: WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIALS SHALL BE PROVIDED. MS -14. APPLICABLE REGULATIONS: ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. MS -15. STABILIZATION OF BED AND BANKS: N/A THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. SHEET REVISION BY I DATE vH OIL f 00 r' I- Lic. Na 1W2267 ti %�IaNAL MS -16. UNDERGROUND UTILITIES: UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS, IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 - LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. WHERE CONSISTENT WITH SAFETY AND SPACE CONSIDERATIONS, EXCAVATED MATERIAL IS TO BE PLACED ON THE UPHILL SIDE OF TRENCHES, EXCEPT FOR ANY DIVERSION DITCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFFSITE PROPERTY. D. TRENCH BACKFILL MATERIAL SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. ALL APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH AT ALL TIMES. MS -17. CONSTRUCTION ACCESS ROUTES: WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND- DISTURBING ACTIVITIES. MS -18. TEMPORARY E &S CONTROL MEASURE REMOVAL: ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL E &S AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. MS -19. ADEQUACY OF RECEIVING CHANNELS: PROPERTIES AND WATERWAYS DOWNSTREAM FROM THE DEVELOPMENT SITE SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATES OF STORM WATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24 -HOUR DURATION. D. MAINTENANCE: ALL EROSION AND SEDIMENT CONTROL STRUCTURES AND SYSTEMS SHALL BE MAINTAINED, INSPECTED, AND REPAIRED AS NEEDED TO INSURE CONTINUED PERFORMANCE OF THEIR INTENDED FUNCTION. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED AT THE END OF EACH DAY AND AFTER EVERY RAINFALL EVENT. 1. DAMAGE TO EROSION CONTROL MEASURES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY SHALL BE REPAIRED BEFORE THE END OF EACH WORKING DAY. 2. MAINTAIN ALL SEEDED AREAS UNTIL A UNIFORM STAND IS ACCEPTED. 3. CONSTRUCTION ENTRANCE (3.02): PROVIDE FOR EQUIPMENT WASHING AS NEEDED TO PREVENT THE TRANSPORT OF SOIL ONTO EXISTING ASPHALT ROADWAYS. ANY SEDIMENT ON THE PAVEMENT SHALL BE REMOVED IMMEDIATELY. 4. SILT FENCE (3.05): SILT FENCE BARRIERS WILL BE CHECKED DAILY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL REACHES HALF WAY TO THE TOP OF THE BARRIER. 5. STORMDRAIN INLET PROTECTION (3.07): SHALL BE INSPECTED AFTER EACH RAIN AND REPAIRS MADE AS NEEDED. 6. TEMPORARY DIVERSION DIKE / TEMPORARY RIGHT -OF -WAY DIVERSION (3.09/3.11): THE MEASURES SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS MADE TO THE DIVERSION AS NECESSARY. ONCE EVERY TWO WEEKS, WHETHER A STORM EVENT HAS OCCURRED OR NOT, THE MEASURES SHALL BE INSPECTED AND REPAIRS MADE IF NEEDED. 7. TEMPORARY SEDIMENT TRAP/ BASIN (3.13/3.14): SEDIMENT SHALL BE REMOVED AND THE BASIN OR TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN SEDIMENT HAS ACCUMULATED TO ONE HALF THE DESIGN VOLUME OF THE WET STORAGE. SEDIMENT REMOVAL FROM THE BASIN SHALL BE DEPOSITED IN .A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS. FILTER STONE SHALL BE REGULARLY CHECKED TO ENSURE THAT FILTRATION PERFORMANCE IS MAINTAINED. STONE CHOKED WITH SEDIMENT SHALL BE REMOVED AND CLEANED OR REPLACED. 8. STORMWATER CONVEYANCE CHANNELS (3.17): THE MEASURE SHALL BE CHECKED PERIODICALLY TO ENSURE THAT SCOUR IS NOT OCCURRING. SEDIMENT DEPOSITED IN THE CHANNELS SHALL BE REMOVED PRIOR TO THE REMOVAL. OF THE TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES, AND DURING CONSTRUCTION WHEN THE CAPACITY OF THE CHANNELS IS REDUCED. 10. OUTLET PROTECTION (3.18): INSPECT AFTER RAINFALL EVENTS TO CHECK FOR SCOUR. MAKE REPAIRS AS NECESSARY. 11. SEEDING (3.31 / 3.32): AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE RESEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. 12. SOIL STABILIZATION BLANKETS & MATTING (3.36): THE MEASURE SHALL BE PERIODICALLY CHECKED FOR UNDERMINING AND TO ENSURE THAT IT IS SECURE AND FUNCTIONING AS INTENDED. 13. DUST CONTROL (3.39): PROVIDE DUST CONTROL IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST WHERE ON -SITE AND OFF -SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN. ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE - CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625 -02 -00 EROSION AND CONTROL SEDIMENT REGULATIONS. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ENGINEERS gpArlSURVEYORS "A PLANNERS ASSOCIATES PO Bor 4119 3040 Avemole Squme PI Lyndhburg, VA 24502 Ch.ulune ,,11e, VA 22911 Phone 434 316 6080 Phone 434 984 2700 WNt W WW V,1()UAeS 11Lt 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF - PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS FOR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED TO COMPLIANCE WITH SECTION 13 -301 OR THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:OOA.M. TO 9:00 P.M. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, IN ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS /ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST OF 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH TO BE APPLIED AT 80LBS /100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS /1000SF, INCORPORATED INTO THE TOP 4 -6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS /ACRE AND CONSIST OF A 10 -20 -10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS /ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0 -5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS /1000SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17- 2046). 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17- 2078). SEQUENCE OF CONSTRUCTION 1. CONTRACTOR TO SCHEDULE AND ATTEND A PRE - CONSTRUCTION MEETING WITH ALBEMARLE COUNTY AND OBTAIN ALBEMARLE COUNTY LAND DISTURBANCE PERMIT PRIOR TO THE START OF ANY LAND DISTURBING/ CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PLAN. 2. INSTALL PERIMETER CONTROLS AND INLET PROTECTIONS IN LOCATIONS SHOWN ON THE PLANS PRIOR TO BEGINNING CONSTRUCTION. 3. PERFORM GRADING OPERATIONS TO BRING SITE TO SUBGRADE ELEVATIONS AND MAINTAIN POSITIVE DRAINAGE TO SEDIMENT TRAPPING DEVICES. STABILIZE AREAS AS THEY ARE BROUGHT TO GRADE WITH GRAVEL OR SEEDING. 4. INSTALL ASPHALT BASE AND INTERMEDIATE COURSES FOR PARKING AREA. 5. STABILIZE ALL REMAINING DISTURBED AREAS. 6. INSTALL ASPHALT SURFACE COURSE. 7. ALL EROSION AND SEDIMENT CONTROLS SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION OR WHEN MEASURES ARE NO LONGER NEEDED. REMOVALS ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 8. CLOSE OUT THE PROJECT. DESIGNED BY: JOB DRAWN BY: KTM DIHR BY: DMJ WWA NUMBER: 214045.03 PROJECT: FARMINGTON COUNTRY CLUB SOUTH SIDE IMPROVEMENTS VSMP PLAN ALBEMARLE COUNTY, VIRGINIA TITLE: EROSION AND SEDIMENT CONTROL NARRATIVE & DETAILS FILE NAME: DISCIPLINE: SCALE: DATE: 404503C_ENS-2.dwg CIVIL H•' IA 08108114 SET REV. NO. 4 DRAWING NUMBER: C -10 SHEET NUMBER: 10 of 16 3 I 2 W UI O 0 �d- / c 9 E v aEci a c v 0 U U c th c L2 Ui 0 0 N toU U c O v, C4 Paved construction entrance for erosion control plans 11rUNE 70' 1Ift CON'STRUCTIQA, ACCES'S —\ / 3" 5;14 -2A ASPHALT TOP / COttW;E LXi sill t� \7u // L l (hji PAVc'.f•AF-NT N �.i° ivilN. Z to AG'OKEf,ArE f3AS`c` PROFILE STONE 0' MIN. - wl,i3rncIioN ASPIiALT PAVED ACCESS - 0 -VIA`_-:HRAI:K -EXL311111; 2% 2% PAY MEN f POSITIVE QRAINAGF "MUST EXrEid 1 FULL 'IIIDiH - — ;F rO SEDIMENT OF INGRESS AND EGRE SS � FRAPPING DEVICE OPERATION PLAN 1051 LIVE DHAINACJE r0 SEDIMENT I RAPPING DEVI( E RLTCIR CI,OTti SECTION A-A A m ninwin water tap of 1 inch inust be installed with a niinilnunl 1 inch ballcock: shutoff'valve supplyhvz a wash hose,with a diameter of 1.5 uicher: for adequate constant pressure. Wash water must be earlied away from the entrance to an approved settling area to reiilove se(linient. .All se(linient shall be pfevented from euteling stoitu diaals, flitches 01 watelcoursela. PAVED WASH RACK CE NO SCALE NOTE: IN LIEU OF A WATER TAP, CONSTRUCTION ENTRANCE SHALL UTILIZE AN EXISING YARD HYDRANI ON SIT. 1992 3.05 CONSTRUCTION OF A SILT FENCE (WITTIOUT WIRE SUPPORT) 1 SET THE STAKES, 2. EXCAVATE A 4"X 4- TRENCH UPSLOPE ALONG THE LINE Of' STAKES. s'MAX Jill FLOW 4�' 3 STAPLE FILTER MATERIAL 4 BACKFILL AND COMPACT' TO STAKES AND EXTEND THE EXCAVA'T'ED SOIL, IT INTO THE 'TRENCH FLOW SHEET FLOW INSTALLATION (PERSPECTIVE: VIEW) POINTS A SHOULD BE HIGHER THAN POINT B DRAINAGEWAY INSTALLATION -_. (FRONT ELEVATION) Source: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, Sherwood and Wyant Plate 3.05 -2 SF 1.992 3,09 IT'MPORAR Y DIVERSION DIKE' CornDacted Soil Source: Va. DSWC Plate 3,09 -1 1992 1992 RUNOFF WATER WITH SEDIMENT" 3.07 GRAVEL AND WIRE ]VESH DROP INLET SEDIMENT FIL TER 18" MIN _ av '' "�IIIIi4 SEDIMENT SPECIFIC APPLICATION GRAVEL *(12 "MIN DEPTH) III III-� 4 WIRE MESH FILTERED WATER THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY CONCENTRATED FLOWS ARE EXPECTED, BUT NOT WHERE PONDING AROUND THE STRUCTURE MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE `I'0 ADJACENT STRUCTURES AND UNPROTECTED AREAS * GRAVEL SHALL BE VDOT j/3, #357 OR #5 COARSE AGGREGATE Source: Va. DSWC TABLE 3.31 -B Outlet Protection ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS" OP -2 Design Flow (cfs) Rate Planting Dates Sec' lbs. acre Sept, 1- Feb. 15 50 /50 Mix of 0.0 Annual Ryegrass 6 0 (Lolium multi - forum) Rip Rap Gradation &c 50- 100 Cereal (Winter) Rye 35 0 (Secale cereale) Apron Width(s) (ft) Feb, 16 - Apr, 30 Annual Ryegrass 60-100 (Lolium multi- florum) n/a May 1 - Aug 31 German Millet 50 Source: Va. DSWC (Setaria italica) 3.31 0 Plate 3.07 -2 IP PIPE' OUTLET CONDITIONS A A 'IPE OUTLET TO FLAT REA WITH NO DEFINED ;HANNEL 0 ,. d SECTION A —A FILTER CLOTH 1,EY IN 0" 9 ", RECOMMENDED FOR EP�E PERISIE'rER 3(T ( \TIN) 'IPE OU'T'LET' TO WELL )EFINED CHANNEL m6ig* cl SECTION A -A 7— FILTEP CLOTH KEY IN 0" 0 ", RECOMMENDED FOP EN'I'lPE PERIMETER NOTES 1 APRON LININU 1\IAY BE RIPRAP, GROUPED RIPRAP, GABION BASKET', OR CONCRETE 2 La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3 18 3 AND S 18 -I OP 3 4 = 15 TIMES 'THE MAXIMUM STONE DIAMETER, BUT NO'C LESS 'THAN G INCHES Sour ce Va DSWC 3.18 Outlet Protection ID (OP -1, OP -2, etc) OP -1 OP -2 Design Flow (cfs) 660 4.89 Tallwater Depth (ft) 0.0 0.0 Discharge Velocity (fps) 6 0 5 4 Rip Rap Gradation Class Al Dry Riprap Class AI Dry Riprap Apron Length (ft) 35 0 5.0 Apron Width(s) (ft) 6.0 5 0 Side Slopes (H.V) n/a n/a Apron Depth (in) 24 24 1992 3.32 TABLE 3.32 -D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA 0 Plate 3 18-1 1992 DRIP UNE SNOW FENCE BOARD FENCE FENCING AND ARMORING CORRECT METHODS OF TREE FENCING :NCE '00 " CORRECT TRUNK ARMORING 00 TRIANGULAR BOARD FENCE Source: Va. DSWC 111-401 3.38 Plate 3.38 -2 TP 1992 3.35 Total Lbs. RU Per Acre Minimum Care Lawn MULCHES: - Commercial or Residential 175 -200 lbs. - Kentucky 31 or Turf -Type Tall Fescue 95 -10017o - Improved Perennial Ryegrass 0 -5% - Kentucky Bluegrass 0 -5% High- Maintenance Lawn 200 -250 lbs. - Kentucky 31 or Turf -Type Tall Fescue 100% General Slope (3:1 or less) - Kentucky 31 Fescue 128 tbs. - Red Top Grass 2 lbs, - Seasonal Nurse Crop " 20 tbs. Minimum 150 tbs. Low- Maintenance Slope (Steeper than 3:1) - Kentucky 31 Fescue 108 tbs, - Red Top Grass 2 lbs. - Seasonal Nurse Crop * 20 tbs. - Crownvetch ** 20 tbs. 150 tbs. * Use seasonal nurse crop in accordance with seeding dates as stated below: February 16th through April ...................... Annual Rye May 1st through August 15th ..................... Foxtail Millet August 16th through October ......... . ............ Annual Rye November through February 15th ................... Winter Rye ** Substitute Sericea lespedeza for Crownvetch east of Farmville, Va. (May through September use hulled Sericea, all other periods, use unhulled Sericea). If Flatpea is used in lieu of Crownvetch, increase rate to 30 lbs. /acre. All legume seed must be properly inoculated. Weeping Lovegrass may be added to any slope or low- maintenance mix during warmer seeding periods; add 10 -20 lbs. /acre in mixes. 0 Plate 3 18-1 1992 DRIP UNE SNOW FENCE BOARD FENCE FENCING AND ARMORING CORRECT METHODS OF TREE FENCING :NCE '00 " CORRECT TRUNK ARMORING 00 TRIANGULAR BOARD FENCE Source: Va. DSWC 111-401 3.38 Plate 3.38 -2 TP 1992 3.35 ORGANIC MULCH MATERIALS AND APPLICATION RATES RU RATES: MULCHES: NOTES, per Acre per 1000 sq. ft, Straw or Hay 1 %, - Z tons 70 - 90 tbs. Free from weeds and coarse SET REV. N0. 4' (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover} or by hand. Fiber Mulch Minimum 35 tbs. Do not use as mulch for 1500 tbs. DRAWING NUMBER: winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tans 185 - 275 tbs. Cut or shredded in 4 -6" lengths. Air- dried. Da not DIHR BY: use in fine turf areas. Apply with mulch blower or by WWA NUMBER: 214045.03 hand. Wood Chips 4 - 6 tons 185 - 275 tbs. Free of coarse matter. Air - dried. Treat with 12 tbs nitrogen per tan, Do not SHEET REVISION BY DATE use in fine turf areas. Apply SHEET REVISION BY DATE with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 1 -2 cu. yds. Free of coarse matter, Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 2000 lbs. /ae, or 45 tbs./1000 sq. ft, Source: Va, DSWC MU TABLE 3,35 -A ORGANIC MULCH MATERIALS AND APPLICATION RATES RU RATES: MULCHES: NOTES, per Acre per 1000 sq. ft, Straw or Hay 1 %, - Z tons 70 - 90 tbs. Free from weeds and coarse SET REV. N0. 4' (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover} or by hand. Fiber Mulch Minimum 35 tbs. Do not use as mulch for 1500 tbs. DRAWING NUMBER: winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tans 185 - 275 tbs. Cut or shredded in 4 -6" lengths. Air- dried. Da not DIHR BY: use in fine turf areas. Apply with mulch blower or by WWA NUMBER: 214045.03 hand. Wood Chips 4 - 6 tons 185 - 275 tbs. Free of coarse matter. Air - dried. Treat with 12 tbs nitrogen per tan, Do not SHEET REVISION BY DATE use in fine turf areas. Apply SHEET REVISION BY DATE with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 1 -2 cu. yds. Free of coarse matter, Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 2000 lbs. /ae, or 45 tbs./1000 sq. ft, 2 ADDED OUTLET PROTECTION DETAIL RU 10/22/14 ��T I +01, 000 Lic. Na. ?67 �. Sri / ��~ f +'►` + + ♦N,M - i ENGINEERS SURVEYORS PLANNERS �►J�7►Q�lATES P °�ur41ll ' "got \ ° " " °`es`'`iirePl Lyuhbmg, VA _d50_ Charluuewlle, VA 3911 ,,4, ,4.ts«.1 „F DESIGNED JDB: PROJECT: FARMINGTON COUNTRY CLUB SOUTH SIDE IMPROVEMENTS VSMP PLAN ALBEMARLE COUNTY, VIRGINIA SET REV. N0. 4' DRAWN BY. KTM DRAWING NUMBER: TITLE: EROSION AND SEDIMENT CONTROL DETAILS DIHR BY: WWA NUMBER: 214045.03 FILE NAME: 9 DISCIPLINE: SCALE: V: N/A DATE: 08/08/ 14 N0. SHEET REVISION BY DATE N0. SHEET REVISION BY DATE IM 31: '10 14 ca to 0 1* aci E CL 0 C4 1-11 E-- THRESH 00 E 64779 13 FF ON RE] 0 BRICK 646 40 EJ O ❑ )R GRATE - lop DR 14;•BXVrb DR L P ❑ 13 V COVERED WALKWAY DRAIN TOP 63577 INV-629 59 L- I NNW y 64 14 GRATE TOP 645 78 0 SLATE THRESH 64591 Lj DR A/C DOI, LIP 0 DR DR]] BOXWOODS w Wvf, DR LIJ U Lj UH BOXWOODS f-, LP Cl WALL A/C Cl A/C A/C T ESH 2- CIP 60 2'i 11 330 9 11 528 4 SSM 4" CIP -TOP 629 1 7 63362 TO T STONE BLDG- 634S W J WALp, Al 7�1 9w =S-1 , 0 / //� / C, A 11 "1 (TYP 1 BIORETENTION SOIL MIXTURE IN 4, ACCORDANCE WITH VIRGINIA BMP ',/ ;' t / i CLEARINGHOUSE SPECIFICATIONS, LATEST EDITION. TESTED FOR IPCHFJL3O &P 3 14 0 ACCEPTABLE PHOSPHORUS INDEX -\ / o BETWEEN 10 AND 30 OR ❑ W'S 4 BETWEEN 7 AND 23 MG KG OF °R CO P IN SOIL MEDIA. I" WL LP DR PLANTER, WS TOP OF F, VwV 11V MULCH x-a S 06.0 ELEV.=6 TEL PED 1 HRESH 33 12 THRESH 634 89 AREA B WALK W LK VArVE NO �`W 4 R, -cv- C C M 53 "T8" am 63� -T 0`T24 V = -6328, -�i 6 7' LEVATO -' PLANTER 1I rr GSV APPRO (MATE �,,LocAT DN PER E 40R055 F/ =?M]NGTGI` 593 TE �ANCE ASPHALT I FF OVERHANG 33490 C 10 APPROX DIRECTION OF G Ss 7, 7- ------ - ------------ BRICK INACCESSIBLE j __-STORM DRAIN PIPE 36BIR? PER FARMINGTON- MAINTENANCE THRESH APPROXIMATE LOCATION OF ASPHALT 62792 V -SANITAPLY SEWERILINE AS PARKING DATEp:_4Y FARMINGTON \ ' I / I ENAN ST $TON y I', AND FRAME T 6366 D,- -ARE-A A CV GOL DART S� OT 63346 , TEE BOX 0 IN PuF R CK WALL ------------- RICK PATIO 1 MAP34 0 FF 627 63 628 2`6-' PLANTER SSMH, jqH 6308�, PVC ]��Lp 4 '-T­-� 11 625 39 0 ICV, f , - -- / , APPROXIMATE •37S,' GA- OCK WATERLINE A/ 627 WALL FA01�GTON 3MH�' 1)0 56 /S BRIQK STEPS _7117 1 TEE E30X WV I ASP------r-11N114RY sEVVE HALT PB Z PARKING LINE (TYP) S GRATE CB[] JOY OP M 62160 ASPHALT -- B 2-8 PVC II �\ PARKING 7- PB- PLA E PB iY8,0 M I P�- 2 83 NOTES: ICv CVMb 4 APP�FOXLE­�OECAT,10, OF LP T ipo ;�'. STORM ---6_) DRAIN LINE AS [�) - - - 1. BIORETENTION FACILITIES SHALL BE CONSTRUCTED AND IN D, A TED BY ("'I CURB - WV1 -did& GRATE CON[ 3 37�4 3 E] DR ❑ OR 0 WS L POST l / / 3- UYIP I .............. GAS GONG 2 3/4' GASLINE WS WS L IT W/6 NC G 3\58 t, S S C, RAV WAL PEA 10 vyy S GRAVEL xl� ,CI' SANITARY LATER PER WALV 7Z �ARWNGTON MA 7ENAN I CO S ASPHALT CO PARKING 0151 101 Post Re-Developed Condtions 1111111111110111 6' CIP? Managed Turf (Acres) Impervious (Acres) gpilim, 1 Area A 0.21 0.28 0.49 0.18 0.31 0.49 Area B 0.10 0.09 0.19 0.10 0.09 0.19 Area C -M -1 0.044 0.06 j, ASPHALT I FF OVERHANG 33490 C 10 APPROX DIRECTION OF G Ss 7, 7- ------ - ------------ BRICK INACCESSIBLE j __-STORM DRAIN PIPE 36BIR? PER FARMINGTON- MAINTENANCE THRESH APPROXIMATE LOCATION OF ASPHALT 62792 V -SANITAPLY SEWERILINE AS PARKING DATEp:_4Y FARMINGTON \ ' I / I ENAN ST $TON y I', AND FRAME T 6366 D,- -ARE-A A CV GOL DART S� OT 63346 , TEE BOX 0 IN PuF R CK WALL ------------- RICK PATIO 1 MAP34 0 FF 627 63 628 2`6-' PLANTER SSMH, jqH 6308�, PVC ]��Lp 4 '-T­-� 11 625 39 0 ICV, f , - -- / , APPROXIMATE •37S,' GA- OCK WATERLINE A/ 627 WALL FA01�GTON 3MH�' 1)0 56 /S BRIQK STEPS _7117 1 TEE E30X WV I ASP------r-11N114RY sEVVE HALT PB Z PARKING LINE (TYP) S GRATE CB[] JOY OP M 62160 ASPHALT -- B 2-8 PVC II �\ PARKING 7- PB- PLA E PB iY8,0 M I P�- 2 83 NOTES: ICv CVMb 4 APP�FOXLE­�OECAT,10, OF LP T ipo ;�'. STORM ---6_) DRAIN LINE AS [�) - - - 1. BIORETENTION FACILITIES SHALL BE CONSTRUCTED AND IN D, A TED BY ("'I CURB - WV1 -did& GRATE CON[ 3 37�4 3 E] DR ❑ OR 0 WS L POST l / / 3- UYIP I .............. GAS GONG 2 3/4' GASLINE WS WS L IT W/6 NC G 3\58 t, S S C, RAV WAL PEA 10 vyy S GRAVEL xl� ,CI' SANITARY LATER PER WALV 7Z �ARWNGTON MA 7ENAN I CO S ASPHALT CO PARKING 0151 101 Post Re-Developed Condtions 1111111111110111 -j 6�0 Managed Turf (Acres) Impervious (Acres) gpilim, 1 Area A 0.21 0.28 0.49 0.18 0.31 0.49 Area B 0.10 0.09 0.19 0.10 0.09 0.19 Area C -M -1 0.044 0.06 j, 0.044 0.06 Area D 1.53 0.19 1.72 0.94 0.78 1.72 Totals 1.856 0.604 2.46 1.236 1.224 2.46 I �20,010021111, SPUN SHEET REVISION BY MUL 8" P GOLF ;ROAD 6 -j (PR ; /ATE) 14" THICK LAYER PROVIDE MINIMUM--/ BOTTOM 'DF FILTER STONE 6" SUMP BELOW BIORETENTION STON VDOT NO. 57 WALL 0 k" AGGREGATE UNDERDRAIN FACILITY=601.16 �P r--CONC-- A 33085`r 6EL /-j- < TYPICAL LEVEL 2 BIORETENTION SECTION 5 P/14 ", \ ' 61953 �C- DVA, &2q E----------- ED 630 H FF 1 1/2 ST 62776 STONE & 41 FRAME COCA ON - - 1-11 1=1 I E , \�� \ HRES --�1 %' _E3 RICIF W�,LK IAINTEN E 3008' Do LATE 0 PATIO ) i� T RESH 3 0 K,/ 4 62A 2 6 7 69 /30 3AW/10 D 6 3 S Oc I �P- 'T wM OO RAN Gw� [APPROXIMATE OF WATER SERVICE PER H GW '18 1 - - --------------------- ­�2 TD, OH 0. F OHTV I \ - ." � 1 '/1 1 RD,FENCE 12CED/ /25 -11112 � � � FA NG 0 N P 6 62 /20CEI,/�3\ T , 11 25 J'w CONCENTRATED A'1`N`T N A N E 62 /25 MAINTAINED IN ACCORDANCE WITH THE CURRENT PUBLICATION OF 62125 THE VIRGIN EE30 C 2157 617 91 / 1j A DEQ STORMWATER DESIGN SPECIFICATION NO. 9. / \ / \ 05 11 T INFLOW \A I -E 7--fj� 619 05 �j 1<� P, `119 PE D 'n 2. BIORETENTION FACILITIES SHALL NOT BE CONSTRUCTED UNTIL 6_93 T EZN AREAS DRAINING TO THEM ARE DEEMED STABILIZED BY THE 0C t 2433,- P �3 0 Now BUS B I y Z ALBEMARLE COUNTY EROSION AND SEDIMENT CONTROL tff54 -b6SH/ A�01k�l I - �,I�-w L- L- F --Z3GED14, 1, WV NTEF INSPECTOR. FF FOR DIMENSIONS / \ 4520 72 Q23 2 25 14 IT �wv PLAN 44 'PRINT / DH OLE Tf� I STOR 19 P33 BRICK AREA Q- T 6/59 \`\ 2 FRAME , �, NOT TO SCALE INFLOW PIPE CLASS Al SIZE RIVER COBBLE 12" THICK LIP 2' WIDE GRAVEL DIAPHRAM 7 STONE) LEVEL ... SPREADER 2" MIN. FILTER FABRIC Pre Re-Developed Conditions Post Re-Developed Condtions THRESH -j 6�0 ", \ ' 61953 �C- DVA, &2q E----------- ED 630 H FF 1 1/2 ST 62776 STONE & 41 FRAME COCA ON - - 1-11 1=1 I E , \�� \ HRES --�1 %' _E3 RICIF W�,LK IAINTEN E 3008' Do LATE 0 PATIO ) i� T RESH 3 0 K,/ 4 62A 2 6 7 69 /30 3AW/10 D 6 3 S Oc I �P- 'T wM OO RAN Gw� [APPROXIMATE OF WATER SERVICE PER H GW '18 1 - - --------------------- ­�2 TD, OH 0. F OHTV I \ - ." � 1 '/1 1 RD,FENCE 12CED/ /25 -11112 � � � FA NG 0 N P 6 62 /20CEI,/�3\ T , 11 25 J'w CONCENTRATED A'1`N`T N A N E 62 /25 MAINTAINED IN ACCORDANCE WITH THE CURRENT PUBLICATION OF 62125 THE VIRGIN EE30 C 2157 617 91 / 1j A DEQ STORMWATER DESIGN SPECIFICATION NO. 9. / \ / \ 05 11 T INFLOW \A I -E 7--fj� 619 05 �j 1<� P, `119 PE D 'n 2. BIORETENTION FACILITIES SHALL NOT BE CONSTRUCTED UNTIL 6_93 T EZN AREAS DRAINING TO THEM ARE DEEMED STABILIZED BY THE 0C t 2433,- P �3 0 Now BUS B I y Z ALBEMARLE COUNTY EROSION AND SEDIMENT CONTROL tff54 -b6SH/ A�01k�l I - �,I�-w L- L- F --Z3GED14, 1, WV NTEF INSPECTOR. FF FOR DIMENSIONS / \ 4520 72 Q23 2 25 14 IT �wv PLAN 44 'PRINT / DH OLE Tf� I STOR 19 P33 BRICK AREA Q- T 6/59 \`\ 2 FRAME , �, NOT TO SCALE INFLOW PIPE CLASS Al SIZE RIVER COBBLE 12" THICK LIP 2' WIDE GRAVEL DIAPHRAM 7 STONE) LEVEL ... SPREADER 2" MIN. FILTER FABRIC BLDG -T" LOCATII FF X OF �O T OSSIBLE) STO ASPHALT IJ 62198 DRAIN LINE AS (TYP INDICATED BY PARKING 6' WL WV RMINGTON A • FH ONd TENANCE SLAB -EP PLANTER C V M f --UE3L, ED�3 19B 32 1035 1 35' 203�- 12 5 Y 22 62T3-1V 4 2 j +96- > -7 6 ENCH R #2 1.00, SOIL TYPE, (TYPICAL) 4-21 L) PROFILE 24" GRAVEL LEVEL SPREADER NOT TO SCALE 1.00, CLASS Al RIP-RAP SECTION C's I lic S SOIL-DAPA P� 131OF LTER SURFACE BMP ANALYSIS AREA SUMMARY TABLE,/ OYIDED ON E&S Z C) cV C4 Ir NARRATIVE /SHEET 15 / \ / \\ \ \ / \ \ /\ \\ j� AREA D < RIPRAP WEIR WALL DEFAIL it ED 4 Pre Re-Developed Conditions Post Re-Developed Condtions Managed Turf (Acres) Impervious (Acres) Total (Acres) Managed Turf (Acres) Impervious (Acres) Total (Acres) Area A 0.21 0.28 0.49 0.18 0.31 0.49 Area B 0.10 0.09 0.19 0.10 0.09 0.19 Area C 0.016 0.044 0.06 0.016 0.044 0.06 Area D 1.53 0.19 1.72 0.94 0.78 1.72 Totals 1.856 0.604 2.46 1.236 1.224 2.46 BLDG -T" LOCATII FF X OF �O T OSSIBLE) STO ASPHALT IJ 62198 DRAIN LINE AS (TYP INDICATED BY PARKING 6' WL WV RMINGTON A • FH ONd TENANCE SLAB -EP PLANTER C V M f --UE3L, ED�3 19B 32 1035 1 35' 203�- 12 5 Y 22 62T3-1V 4 2 j +96- > -7 6 ENCH R #2 1.00, SOIL TYPE, (TYPICAL) 4-21 L) PROFILE 24" GRAVEL LEVEL SPREADER NOT TO SCALE 1.00, CLASS Al RIP-RAP SECTION C's I lic S SOIL-DAPA P� 131OF LTER SURFACE BMP ANALYSIS AREA SUMMARY TABLE,/ OYIDED ON E&S Z C) cV C4 Ir NARRATIVE /SHEET 15 / \ / \\ \ \ / \ \ /\ \\ j� AREA D < RIPRAP WEIR WALL DEFAIL it ED 4 F, Q27 69 NTS )NI" /SO1/L DIVISION L E STR-3 IF SOD CANNOT BE INSTALLED TYPICAL \ -22CEI (TYPICA =0.50acres (7 UPON PLACEMENT OF SOIL REFER TO LANDSCAPE MIX, INSTALL PERIMETER SILT EL 3 fn PLANS FOR BIOFILTER FENCE AT TOP OF SEE,./DRAWING No. A \ ' \ 210ED 5 PLANTINGS UNSTABILIZED EMBANKMNET i' -$ 1,41 d U OHM 27-85 PE (TYP //PLAN FOR PIPE" U X TOP OF PROFILES. 2 MULCH 6" SLO S ) SCREW CAP ON GRADE TOP OF EMBANKMENT PVC A 1-il 1 - , - \ ,,, ' BIORETENTION/RAIN GARDEN cljI I E 6? I - - Qed 4 =61 0.00 � �-12 MAINTENANCE SCHEDULE NEW 6 476 12 MIN. NONPERFORATED BIORETENTfON 7 I I V STANDPIPE PONDING DRAINAGE AREA D ANALYSIS SUMMARY Maintenance Tasks Frequency • Mowing of grass filter strips and bioretention turf cover_ At least 4 times a year • Spot weeding, erosion repair, trash removal, and mulch raking Twice during growing season • Add reinforcement planting to maintain desired the vegetation 65 78 density As needed • Remove invasive plants using recommended control methods • Stabilize the contributing drainage area to prevent erosion • Spring inspection and cleanup DIHR BY. DW • Supplement mulch to maintain a 3 inch layer Annually • Prune trees and shrubs • Remove sediment in pre-treatment cells and inflow points Once every 2 to 3 years • Replace the mulch layer I Every 3 years F, Q27 69 NTS )NI" /SO1/L DIVISION L E STR-3 IF SOD CANNOT BE INSTALLED TYPICAL \ -22CEI (TYPICA =0.50acres (7 UPON PLACEMENT OF SOIL REFER TO LANDSCAPE MIX, INSTALL PERIMETER SILT EL 3 fn PLANS FOR BIOFILTER FENCE AT TOP OF SEE,./DRAWING No. A \ ' \ 210ED 5 PLANTINGS UNSTABILIZED EMBANKMNET i' -$ 1,41 d U OHM 27-85 PE (TYP //PLAN FOR PIPE" U X TOP OF PROFILES. 2 MULCH 6" SLO S ) SCREW CAP ON GRADE TOP OF EMBANKMENT PVC A 1-il 1 - , - \ ,,, ' BIORETENTION/RAIN GARDEN cljI I E 6? I - - Qed 4 =61 0.00 � �-12 MAINTENANCE SCHEDULE NEW 6 476 12 MIN. NONPERFORATED BIORETENTfON 7 I I V STANDPIPE PONDING DRAINAGE AREA D ANALYSIS SUMMARY PRE-DEVELOPED CONDITION POST-DEVELOPED CONDTION Drainage Area 1.6 acres 1.6 acres I c 6.6min. 0111111. CN 65 78 FACILITY #1 OUTLET v STRUCTURE DEPTH ELEV.=606.00 OCE 37 E 3 GRAVEL LEVEL SPREADER --- 3" TOT OF t AL LENGTH BIORETENTION BIORETENTION =1 I El I I-I I I- SOIL MIX 11 1 -, FOREBAY--- < FACILITY=108 :. 6('28 25-� PATH=87 000 00000000000 0000 -ry 4 r L low am now IF PERFORATED CLASS Al MY RIPRAP-- 0 WATERTIGHT DRAINAGE III ftft OUTFACE r 4QED­j�T- PIPE CONNECTION SCH. 40 PVC ANALYSIS AREA, TYP UIP V FAN 3�, GRAPHIC SCALE MUST BE USED / I I - 0 11% " IF THIS DRAWING IS A REDUCTION ON GEOfEXTILE- FABRIC 0 LIMITS OF BMP '7. UNDERDRAIN COURSE �IENGTH=W-i��00-, 77 �i YIDTH=5' STALLED TEMPORARY EXCAVATED SUBGRADE SLOPES MAY BE INSTALLED THICKNESS-24 INCHES NEAR VERTICALLY TO ENSURE A MINIMUM BOTTOM DEPTH OF SCALE: 1 30' 19 3 RIP-RAP WEIR 4' IS MAINTAINED FOR THE DRAINAGE COURSE. ALL SLOPES FLOW PATH WALL ABOVE MULCH LAYER TO BE NO STEEPER THAN 3:1, UNLESS mom OTHERWISE SHOWN ON PLANS 30' 0 30, TYPICAL LEVEL 2 BIORETENTION FACILITY I\ I / l '' I l NOT TO SCALE 1 UPDATED PROJECT AREAS RU 10/3/14 DESIGNED BY: PROJECT. SET REV. NO. 017 000 FARMINGTON COUNTRY CLUB 0 2 REVISED PER ALBEMARLE COUNTY COMMENTS RU 10/22/14 P �� JDB ff 4 SOUTH SIDE IMPROVEMENTS VSMP PLAN 4 MODIFIED GRILL BUILDING OUTLINE PER ARCHITECTURAL PLANS RU 12/08/14 p 1A ENGINEERS DRAWN BY. IZ7 Al DCAlAQ C' f%n"KITV 1110t-11h11A Lie, No. -267 ��,IQNA3, 414 oo##♦ +#** I SURVEYORS PLANNERS ASSOCIATES PO Box 4119 3040 Memoic Squaie P1 LyllLtibUfg, VA 24502 CI­Iwt�,vffl., VA 22911 Phone 4343166080 Phone 434 984 2700 %vlvw w"d�souates lict I KTM UKAVV11VU INIUMbLK.' C -12 TITLE: BMP ANALYSIS AREAS DIHR BY. DW SHEET NUMBER: 12 of 16 WWA NUMBER: 214045.03 1 FILE NAME: 404503C-BMP- l.dwg 1- DISCIPLINE: CIVIL SCALE: H- im--301 V. NIA DATE: 08108114 SHEET REVISION BY DATE NO. SHEET REVISION BY DATE a 3 N ! L C CIO UI O 1+ O �I- C I` v C O C v a Q cn U U 0 C M O n C4 U C O a C4 / Virginia Runoff Reduction Method ReDevelopment Worksheet -v2.8 -June 2014 To be used w/ DRAFT 2013 BMP Standards and Specifications Site Data Project Name: Farmington Country Club - Southside Improvements Date: August 4, 2014 Total Disturbed Acreage 2.46 C Soils 0 00 0.00 C Soils 0.00 0.00 0.00 Okay Nitrogen EMC (mg/L)l 1.86 D Sol Is 0.00 0.00 0.00 Tota I D Soils 0 -00 0.00 0.00 Tota I Okay data input cells B Soils !calculation cells D Soils constant values Post - ReDevelopment Project & Land Cover Information Constants 0.05 Annual Rainfall (Inches) 43 Target Rainfall Event (Inches) 1.00 Phosphorus EMC (mg/L) 0.26 Target Phosphorus Target Load (lb /acre /yr) 041 Pj 0.90 Pre - ReDevelopment Land Cover (acres) Rv(impervious) 0105 A soils B Soils Forest/Open Space (acres) - undisturbed, 24% protected forest /open space or reforested land 0.00 0,00 Managed Turf (acres) - disturbed, graded for 1:84 yards or other turf to be mowed/managed 0,00 1,86 Impervious Cover (acres) 0.00 40,60 Post- ReDevelopment Land Cover (acres) 49.67 Pre- Developrnent Treatment Volume (acre -ft) A soils B Soils Forest/Open Space (acres) - undisturbed, Pre - Development Treatment Volume (cubic feet) protected forest /open space or reforested land 0.00 0.00 Managed Turf (acres) - disturbed, graded for 2,15 yards or other turf to be mowed/managed 0.00 1,24 Impervious Cover (acres) 0.00 1,22 Area Check Okay Okay Rv r'npffrriPnfs 67,2 50 0 050) -(9 83 1 25,0 050) -(12 00.167, 0 050) Total Disturbed Acreage 2.46 C Soils 0 00 0.00 C Soils 0.00 0.00 0.00 Okay Nitrogen EMC (mg/L)l 1.86 D Sol Is 0.00 0.00 0.00 Tota I D Soils 0 -00 0.00 0.00 Tota I Okay Land Cover Summary Listed Adjusted' Pre- ReDeve loome nt Forest/Open Space Cover (acres) A soils B Soils C Soils D Soils Forest/Open Space 002 003 0.04 0.05 Managed Turf 015 0.20 0.22 025 Impervious Cover 0.95 095 095 0.95 Land Cover Summary Listed Adjusted' Pre- ReDeve loome nt Forest/Open Space Cover (acres) 0.00 0,.00 Composite Rv(forest) 0.00 0,0 • % Forest 011/9 tip /o Managed Turf Cover (acres) 1,86 1.24 Composite Rv(turt) 0.20 0.26 % Managed Turf 76% 610 %. Impervious Cover (acres) 0,60 0160 Rv(impervious) 0105 0195 % Impervious 24% 33 °/Q Total Site Area (acres) 2 -'15 1:84 Site Rv 0.18 0,45 LENGTH Post - 49.67 Pre- Developrnent Treatment Volume (acre -ft) 0,0784 0.0681 Pre - Development Treatment Volume (cubic feet) 3,417 2,966 Pre - Development Load (TP) (lb/yr) 2,15 1.80 'Adjusted Land Cover Summary reflects the pre redevelopment land cover minus the pervious land cover (forest /open space or managed turf) acreage proposed for new impervious cover The adjusted total acreage is consistent with the Post Redevelopment acreage (minus the acreage of new impervious cover). The load reduction requnement for the new impervious cover to meet the new development load limit is computed in Column I. Pre - Development Load (TN) (Ib/yr) 15,36 Site Results D.A. A IMPERVIOUS COVER IMPERVIOUS COVER TREATED TURF AREA TURF AREA TREATED AREA CHECK Totals 0,00 1.86 a,60 Tota I s 0,00 1.24 Land Cover Summary Post - ReDevelopment Forest/Open 204 /a Space Cover 0.00 Composite 100% Rv(forest) 0,00 % Forest Ogle Managed Turf OK. Cover (acres) 1,24 Composite Rv(turf) 0.20 % Managed Turf 7l0 ReDev- Impervious TP Load Reduction Required for New tmperviousArea (Ib /yr) Cover (acres) 0,60 Rv(impervious) 0.95 % Impervious 33% Total ReDev, Site OK. Area (acres) 1.84 ReDev. Site Rv 0,45 0.00 LENGTH Post - 49.67 ReDevelopme nt CITY Treatment Volume (0 00, 5 00) (2 00,4 67, 0 050) (2 50.1 67,0 050) -(0 00.1 56,0 050 }(d 00, 2 75,0 050) -(12 00,4 08.0 050) -(14 00.4 42 (acre -ft) 0.0681 Post - INLET No ReDevelopment POINT Treatment Volume COEF (cubic feet) 2,966 Post - 67,2 50 0 050) -(9 83 1 25,0 050) -(12 00.167, 0 050) ReDevelopment Load (TP) (lb /yr) 1,86 Maximum % Reduction Required Below Pre - ReDevelopment Load 204 /a Rv(impervious) TP Load Reduction Required for Redeveloped Area (Ib /yr) 0,37 100% Total Load Reduction Required (lb tyr} 1,46 New Dev. Site Rv Post - Development Load (TN) (lb /yr) 22.94 Land Cover Summary Post - ReDevelopment New Impervious New Impervious Cover (acres) 0,62 Rv(impervious) 0.95 % Impervious 100% Total New Dev. Site Area (acres) a,0a, New Dev. Site Rv 09 4 -,00 OK. Post - Development Treatment Volume (acre -ft) 0.0491 Post - Development Treatment Volume (cubic feet) 2113$ Post - Development Load (TP) (lb /yr) 1.34 0,00 TP Load Reduction Required for New tmperviousArea (Ib /yr) 1 -00 D.A. B D.A. C D.A. D D -A F AREA CHECK 41.31 0 09 a,p4 018, 0,00 OK. a,00 a,0a, 0.00 0.78 4 -,00 OK. 0.18, 0,1 0,02 O.94 0.00 OK. 0,00 a.aa '0,00 0 .'50 0;00 OK. OK. OK. OK. OK. OK, 1 0.00 Phosphorous TOTAL PHOSPHOROUS LOAD REDUCTION REQUIRED (LB/YEAR)l 1,46 RUNOFF REDUCTION {cf) 2442 PHOSPHOROUS LOAD REDUCTION ACHIEVED (LB /YR) 1.72 ADJUSTED POST - DEVELOPMENT PHOSPHOROUS LOAD (TP) (Iblyr} REMAINING PHOSPHOROUS LOAD REDUCTION (LBIYR) NEEDED CONGRATULATIONS!! YOU EXCEEDED THE TARGET REDUCTION BY 0.3 LB /YEAR!! 2 1 ADDED PIPE AND INLET CALCULATIONS; ADDED CROSS SECTIONS SAR 1 10/22/14 NO. SHEET REVISION BY DATE NO. SHEET REVISION Virginia Runoff Reduction Method Re Development Worksheet-v2.8 -June 2014 Site Data Summary Total Rainfall = 43 inches Site Land Cover Summary Update Summary Sheet Print Site Rv 0 57 A Soils B Soils C Soils D Soils Post Development TN Load (lb /yr) Total % of Total Forest (acres) 0.00 0.00 0.00 0.00 0.00 0.00 0,00 0.00 Turf (acres) 0.94 0.00 1.24 0.00 0.00 0.00 1.24 50.33 Impervious (acres) Crit Depth, Yc (ft) 1 0.00 1.22 0.00 0.00 LENGTH 1,22 49.67 (Sta, El, n) -(Sta, El, n)... CITY VEL (0 00, 5 00) (2 00,4 67, 0 050) (2 50.1 67,0 050) -(0 00.1 56,0 050 }(d 00, 2 75,0 050) -(12 00,4 08.0 050) -(14 00.4 42 2,461 100.00 Site Rv 0 57 Post Development Treatment Volume (ft3) 5105 Post Development TP Load (lb /yr) 3.21 Post Development TN Load (lb /yr) 22.94 Total TP Load Reduction Required (lb /yr) 1.46 Total Runoff Volume Reduction (ft3) 2442 Total TP Load Reduction Achieved (lb /yr) 2 Total TN Load Reduction Achieved (lb /yr) 12.61 Adjusted Post Development TP Load (Ib /yr) 1.48 Remaining Phosphorous Load Reduction (Lb /yr) Required 0;00 Drainage Area Summar D.A. A D.A. B D.A. C D.A. D D.A. E Total Forest (acres) 0.00 0.00 000 0.00 0.00 0.00 Turf (acres) 0,18 0.10 0.02 0.94 0.00 1.24 Impervious (acres) 0.31 0.09 0.04 0.78 0.00 1,22 2.46 Drainage Area Compliance Summary ; D.A. A D.A. B D.A. C D.A. D D.A. E Total TP Load Red. (Ib /yr) 0.00 0.00 0.00 1.72 0.00 1.72 TN Load Red. (lb /yr) 0.00 0.00 0.00 12,61 0.00 12.61 Drainage Area D Summary Land Cover Summary STORMWATER MANAGEMENT NARRATIVE WATER QUALITY FOR THE ALL OF THE PROPOSED IMPROVEMENTS WILL BE PROVIDED WITH THE BIORETENTION FACILITY SHOWN WITH THESE PLANS. BIORETENTION FACILITY #1 WILL CAPTURE AND TREAT THE RUNOFF FOR THE IMPROVEMENTS SHOWN WITHIN BMP ANALYSIS AREA D AND ATTENUATE THE RUNOFF FROM AREA D FOR COMPLIANCE WITH MS -19. THE DRAFT 2013 BMP STANDARDS AND SPECIFICATIONS WERE USED FOR THE SIZING OF THE BIORETENTION FACILITIES. THE FACILITIES ARE SIZED IN ACCORDANCE WITH VIRGINIA DEQ STORMWATER DESIGN SPECIFICATION No.9, BIORETENTION, VERSION 2.0, DATED JANUARY 1, 2013. THE VIRGINIA RUNOFF REDUCTION METHOD REDEVELOPMENT WORKSHEET -V2.8 - JUNE 2014 WAS USED TO DETERMINE THE TOTAL TREATMENT VOLUME FOR THE SIZING OF THE BIORETENTION FACILITY. THE SIZING CALCULATIONS ARE SHOWN BELOW. BIORETENTION FACILITY SIZING CALCULATIONS BIORETENTION FACILITY #1 SIZING CALCULATIONS (LEVEL 2l SURFACE AREA = TREATMENT VOLUME, (Tv) /STORAGE DEPTH TREATMENT VOLUME FOR FACILITY #1 = 3,372 cu.ft. STORAGE DEPTH = 1.65 ft. SURFACE AREA = 3,372/1.65 = 2,043 sq.ft. (REQUIRED) BIORETENTION FACILITY SURFACE AREA PROVIDED = 2,156 sq.ft. FOREBAY VOLUME REQUIRED = 3,372 cu.ft. x 0.15 = 506 cu.ft. FOREBAY VOUME PROVIDED = 508 cu.ft. 1.721 -BMP Selections Practice A Soils B Soils C Soils D Soils Total % of Total Forest (acres) 0.00 0.00 0.00 0.00 0.00 0.00 Turf (acres) 0.00 0.94 0.00 0.00 0.94 54.65 Impervious (acres) 0.00 0.78 0.00 0.00 0.78 45.35 1.721 -BMP Selections Practice Credit Area (acres) Downstream 0.50 Total TP Load Reduction Achieved in D.A. A (lb /yr) Practice 6.b. Bioretention #2 (Spec #9) Impervious: 0.78 User - defined Turf 0.5 Invert Elev (ft) = 1 58 Depth (ft) = 1.08 (Pervious): Q (Cfs) = 1842 Total Impervious Cover Treated (acres) 0.78 Total Turf Area Treated (acres) 0.50 Total TP Load Reduction Achieved in D.A. A (lb /yr) 1.72 Total TN Load Reduction Achieved in D.A. A (lb /yr) 12.61 Channel Report COMPUTATIONS COUNTY Albemarle DISTRICT DESCRIPTION Farmington CC Hydraflowi Express Extension for Aut0desK1s AefoCAO0 Civil 3DC" by Autodesk, Inc Hydraflow Express Extension lot Autodesk0 AutoCADJ Civil fDV by Autodesk, Inc Tuesday, Oct 212014 Cross Section - 1 RUN- User - defined Highlighted RUNOFF Invert Elev (ft) = 1 58 Depth (ft) = 1.08 Slope ( %) = 282 Q (Cfs) = 1842 N -Value = 0 050 Area (sgft) = 4.70 Calculations Velocity (ft/s) = 3.92 Calculations Wetted Perim (ft) = 6.64 Compute by Known Q Crit Depth, Yc (ft) = 092 Known Q (cfs) = 18 42 Top Width (ft) = 5.51 LENGTH EGL (ft) = 1 32 (Sta, El, n) -(Sta, El, n)... CITY VEL (0 00, 5 00) (2 00,4 67, 0 050) (2 50.1 67,0 050) -(0 00.1 56,0 050 }(d 00, 2 75,0 050) -(12 00,4 08.0 050) -(14 00.4 42 0 050) Elev (ft) Section Depth (ft) I 600 - - -- - - -- 442 500 342 400 ------ --- -- - - - - - - - - - -. ._. 242 300 -- _ - 142 2010- -- 042 10,0 - - -058 0.00 -158 -2 0 2 4 6 8 10 12 14 16 Sta (ft) STORM SEINER DESIGN WWA PROJECT NUMBER 214045.00 COMPUTATIONS COUNTY Albemarle DISTRICT DESCRIPTION Farmington CC SHEET 1 OF 1 Hydraflow Express Extension lot Autodesk0 AutoCADJ Civil fDV by Autodesk, Inc Tuesday Oct 21 2014 AREA RUN- INLET RAIN RUNOFF INVERT Q (cfs) Invert Elev (ft) = 125 Depth (ft) = 1.80 CAPA- Slope ( %) = 282 FLOW = 18.42 Calculations N -Value = 0 050 Area (sgft) FROM TO DRAIN OFF CA TIME FALL Q ELEVATIONS LENGTH SLOPE DIA MANNING's CITY VEL TIME = 723 TOP INLET INLET DEPTH INLET No POINT POINT "A" COEF (TO (11o) 67,2 50 0 050) -(9 83 1 25,0 050) -(12 00.167, 0 050) N - Section n (FULL) (FULL) REMARKS ELEVATIONS (H) O U ACRES C INCRE- M ENT ACCUM- ULATED MIN IN /HR CFS UPPER END LOWER END FT FT/ FT IN CFS FPS SEC FT FT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 i W a_ 300 - 200 - d O r- !? a 1 75 in 3 Outfall 1 0 50 081 0 -41 041 500 6.67 270 613.50 61298 53 -0 0 0098 15 0 -010 8 34 6 80 7 80 618.55 5.U5 3 Project: Farmington CC WWA Project Number: 214045 By: SAR Date: 10 -22 -14 Stormwater Inlet Computations W EnclNl:Eks aA'F SURWiYORS PLANNC RS ASSOCI TES INLET CURB INLETS ON GRADE SAG INLETS ONLY Cross Section 3 ( +100') Hydraflow Express Extension lot Autodesk0 AutoCADJ Civil fDV by Autodesk, Inc Tuesday Oct 21 2014 Cross Section 2 ( +50') Highlighted Invert Elev (ft) = 125 User - defined Highlighted Slope ( %) = 282 Q (cfs) Invert Elev (ft) = 125 Depth (ft) = 1.80 = 4.64 Slope ( %) = 282 Q (Cfs) = 18.42 Calculations N -Value = 0 050 Area (sgft) = 536 Crit Depth, Yc (ft) = 1 52 Velocity (ft's) = 144 = 495 Calculations Wetted Perim (ft) Eli (Sta, EI, n) -(Sta, El, n). . Compute by Known Q Crit Depth, Yc (ft) = 1 59 04 Known Q (cfs) = 18 42 Top Width (ft) = 723 EGL (ft) = 1.98 (Sta, El, n) -(Sta, El, n). . (0 00, 5 00) -(1 50,5 00,0 050) (4 00,3 33,0 050) -(6 00,2 92,0 05U) -(9 -(12 50,2 75,0 050) -(13 00,4 25,0 050) -(t4 00,4 42, 0 050) 67,2 50 0 050) -(9 83 1 25,0 050) -(12 00.167, 0 050) N - Section Depth (ft) CL - O U >� 'O C ,FQ 475 500 U 3.75 U _ _ f U) 400 - + O - - O � i W a_ 300 - 200 - d O r- !? a 1 75 in 49 W 2 075 N CL T W U REMARKS Cn 1.00 - O LL E -025 0,00 o - -- o o - -2 0 2 4 6 8 10 12 14 16 41 t ;v C U U ? 4 2 Z �N Z Z 1J d 4" t � L 0 O C ui W L L2 E > U Y d N 11 X d L � L = 0) +J U - i fi CL 1- � Z te a. It 2 � il C 1 CT 'j Co 'l ~ 0 U� ) to U) F- J 'O L J 'O 3 DI -7 0.50 0,81 0,41 4,00 1,62 1,62 0.02 1 5.0 3 DI -7 0.50 0.81 0.41 6.50 2.63 2.63 0.02 9.5 ���r��I Ole ��� 0 to Lie. No. 2267 -16 10 L ° , 12 SIflNAL ENGINEERS SURVEYORS PLANNERS ASSOCIATES PO Box 4119 3040 Avuuole Squ,ue PI Lynr.itbutg, VA 24502 Utarluueso dlc VA22911 Phone 434 316 6050.. -__ Phone 434 984 2700 WWW V Ka)}ULI,lte� rict Channel Report Tuesday Oct 212014 Cross Section 3 ( +100') Hydraflow Express Extension lot Autodesk0 AutoCADJ Civil fDV by Autodesk, Inc Tuesday Oct 21 2014 Cross Section 2 ( +50') Highlighted Invert Elev (ft) = 125 User - defined Highlighted Slope ( %) = 282 Q (cfs) Invert Elev (ft) = 125 Depth (ft) = 1.80 = 4.64 Slope ( %) = 282 Q (Cfs) = 18.42 Calculations N -Value = 0 050 Area (sgft) = 536 Crit Depth, Yc (ft) = 1 52 Velocity (ft's) = 144 = 495 Calculations Wetted Perim (ft) = 9.32 (Sta, EI, n) -(Sta, El, n). . Compute by Known Q Crit Depth, Yc (ft) = 1 59 Known Q (cfs) = 18 42 Top Width (ft) = 723 EGL (ft) = 1.98 (Sta, El, n) -(Sta, El, n). . (0 00, 5 00) -(1 50,5 00,0 050) (4 00,3 33,0 050) -(6 00,2 92,0 05U) -(9 -(12 50,2 75,0 050) -(13 00,4 25,0 050) -(t4 00,4 42, 0 050) 67,2 50 0 050) -(9 83 1 25,0 050) -(12 00.167, 0 050) Elev (ft) Section Depth (ft) - 475 500 3.75 f 400 275 - 300 - 200 - r- 1 75 075 1.00 -025 0,00 - -- -- - -2 0 2 4 6 8 10 12 14 16 _125 Sta (ft) Channel Report Hydraflow Express Extension for AutodeskU AutoCADO Civil 3DVby Autodesk ,Inc, Tuesday Oct 212014 Cross Section 3 ( +100') User - defined Highlighted Invert Elev (ft) = 125 Depth (ft) = 1 73 Slope ( %) = 282 Q (cfs) = 18A2 N -Value = 0 050 Area (sqft) = 4.64 Velocity (ft's) = 3.97 Calculations Wetted Perim (ft) = 6.42 Compute by Known Q Crit Depth, Yc (ft) = 1 52 Known Q (cfs) = 18 42 Top Width (ft) = 495 EGL (ft) = 198 (Sta, EI, n) -(Sta, El, n). . (000, 5 00) (2 50,475,0050)-(300,40Q,0050) (4 50,267,0050)-(600.225 0050)-(683,125,0050)-(800,142, 0 050) _0000,4 25, 0050) -(120%442,0050) Elev (ft) 600 - 500 - 400 3 00 - -- - - -- 200 100 0 00 - - -- - -- - -2 0 2 4 6 8 10 12 14 Sta (ft) Section Depth (ft) 475 3.75 275 175 075 -025 -1,25 0 0.27 Grate Sag Inlet Design Storm NOTE: 0 0.36 Grate Sag Inlet Check Storm GRATE INLET COMPUTATIONS ASSUME INLET IS 50% CLOGGED BESICrvEJDB PROJECT: FARMINGTON COUNTRY CLUB SET REV. N0. SOUTH SIDE IMPROVEMENTS VSMP PLAN 4 DRAWN BY: AALBEMRLE COUNTY, VIRGINIA DRAWING NUMBER: KTM TITLE: DIHR BY: BMP CALCULATIONS C -13 DMJ WWA NUMBER: FILE NAME: DISCIPLINE. SCALE: DATE: SHEET NUMBER: 214045.03 404503C_BMP -2.dwg CIVIL H: N/A 08/08/14 13 of 16 3 ! Q!. C m UI 0 to 0 i c a� aci c v a. U U 0 of ,c 0 tci v- 0 N U U c O a L2 1+ i " Hydrograph Report A soils B Soils Hydrograph Report Hydrograph Report Area (acres) Hydrograph Report — Hydrograph Report Hydrograph Report Hydrograph Report CN Hydrograph Report '0.0{ 39 •• 0:.94 61 ,.. , ,• 0.00 74 Hydrograph Report CN Hydrafow Hydrographs Extension for AuloCADrP) Civil 3D© 2014 by Autodesk, Inc 00 3 Thursday, / 13 2U 1 4 Hydra ow Hydrographs Extension for A utoCAD ® C i vil 301D 2014 6 y A uto de s k Inc v1 0 3 T hursda y, i 1 / 13 / 2014 H ilia v Hydrographs -- - --- -- ------- - - - - -- - - - - -- for AuloCAD7 Civil by Autodesk, ,Inc v103 - - --- -- Thursday, tt /13/2014 Hydrafow, Hydrographs Extension for A-u-loC--A-D-0 —Civ113D ---2-0-14 - -b-y A-u-to-de-sk—, Inc —v103 ---- Thursday, 1111312014 Hydraflow Hydrographs Extension for AutoCADO Civil 3Dt20t4 by Autodesk, Inc v103 Thursday, 11113 2014 Hydraflow, Hydrographs Extension for AutoCADU Crvd 3D(n)2014 by Autodesk, Inc v103 Thursday, 77 /13/2014 Hyd. No. 1 Thursday, 11 1 13 12014 -_ — Hydraflow Hydrographs Extension for AutoCADb Civil 3CKD 2014 by Autcdesk, Inc v10 3 Thursday, 11 1 13 ! 2014 __ __ _ Hydraflow, Hydrographs Extension for AuIoCAD:d Civil 3Dil 2014 by Autodesk, Inc v10 3 Thursday, At 1 131 2014 Hyd. No. 2 Hyd. No. 4 Hyd. No. 2 Hyd. No. 1 Hyd. No. 4 Hyd. No. 2 Hyd. No. 4 Pond Data Hyd. No. 4 Pre to Bioretention #1 Post to Bioretention #1 Routed Post to Bioretention #1 Pre to Bioretention #1 Routed Post to Bloretention #1 Routed Routed Elegmmg Elevation = b06 00 it Hydrograph type Storm frequency = SCS Runoff = 1 yrs Peak discharge Time to peak = 1.756 cis = 720 min Hydrograph type Storm frequency = SCS Runoff = 1 yrs Peak discharge Time to peak = 4.466 cfs = 718 min Hydrograph type Storm frequency = Reservoir Peak discharge = 1 yrs Time to peak = 0 190 cis = 792 min Hydrograph type Storm frequency = SCS Runoff = 2 yrs Peak discharge Time to peak = 2 050 cfs = 720 min Hydrograph type Storm frequency = SCS Runoff = 2 yrs Peak discharge Time to peak = 4.920 cfs = 718 min Total preeip Storm duration Hydrograph type Storm frequency = Reservoir Peak discharge = 2 yrs Time to peak = 0 232 cfs = 782 min Time interval Drainage area = 1 min = 1 600 ac Hyd volume Curve number = 4,368 tuft = 65 Time interval Drainage area = 1 min = 1 600 ac Hyd volume Curve number = 8,969 tuft = 78 Time interval Inflow hyd. No. = 1 min Hyd. volume = 2 - Post to Bioretention #1 Max Elevation = 3,888 cult = 607.37 ft Time interval Drainage area = 1 min = 1.600 ac Hyd. volume Curve number = 4,990 tuft = 65 Time interval Drainage area = 1 min = 1.600 ac Hyd. volume Curve number = 9,888 tuft = 78 Time interval Inflow hyd. No = 1 min Hyd volume = 2 - Post to Bioretention #1 Max Elevation = 4,766 tuft = 607.47 ft Basin Slope Tc method = 00% = TR55 Hydraulic length Time of conc. (Tc) = 0 ft = 8 80 min Basin Slope Tc method = 0.0% = User Hydraulic length = 0 ft Time of cone (Tc) = 6.00 min Reservoir name = Bioretention Facility #1 Max Storage = 4,768 tuft Basin Slope Tc method = 00% = TR55 Hydraulic length Time of conic. (Tc) = 0 it = 8.80 min Basin Slope Tc method = 00% = User Hydraulic length Time of conc (Tc) = 0 ft = 6.00 min Reservoir name = Bioretention Facility #1 Max Storage = 5,185 tuft Total preeip. Storm duration = 3 50 in = 24 hrs Distribution Shape factor = Type 11 = 484 Total preeip Storm duration = 3.50 in = 24 hrs Distribution Shape factor = Type II = 484 Total preeip Storm duration Q (cfs) = 3 70 in = 24 hrs Pre Distribution Shape factor to Bioretention #1 Hyd No 1 -- 2 Year = Type 11 = 484 Q (cfs) Total preeip. Storm duration Q (cfs) = 3 70 in Distribution = 24 hrs Shape factor Post to Bioretention #1 Hyd No 2 -- 2 Year = Type 11 = 484 Q (cis) — Storage Indication method used Exfiltrabon extracted from Outflow Routed Q {cis) Hyd No, 4 -- 1 Year Q (cfs) Storage Indication method used Q (cis) Ex Titration extracted from Outflow Routed Hyd No. 4 -- 2 Year Q (cis) Pre to Bioretention #1 Q (Cfs) Hyd No 1 -- 1 Year Q (cis) Post to Bloretention #1 Q (cfs) Hyd No 2 -- 1 Year Q (cfs) 200 500 1 0 0 Weir Coen = 333 260 333 333 200 - Invert El (ft) = 602 04 607 DO 000 0 00 Weir Type = 1 Broad --- - -- Length(ft) = 3840 000 000 000 Multi -stags = Yes No No 500 500 Pre to Bloretention #1 Hyd, No. 1 -- 10 Year Q (Cfs) 600 Q (cfs) 1000 Post to Bioretention #1 Hyd No 2 --10 Year Q (Cfs) 1000 Q (Cfs) 1000 500 3,00 Q (Cfs) Routed Hyd No 4 -- 100 Year Q (Cfs) Slope I %) = 1 04 N -Value = 013 Orifice Coen, = 060 Multi-Stage = n/a 0 UU 000 013 013 060 060 Yes No 11 n/a 0 60 No Exfil (in/hi) TW Elev (ft) = 0 400 (by Contour) = 000 300 500 _ 500 5.00 500 - - -- - 1000 -- 400 2100 Note oulreNei, fcv 400 Weir fercnfce c id,voia(ic) and submArvenceis) 800 1800 1800 Stage tft) Stage I Discharge Elev (ft) 5 00 400- 400 400 5 00 -- _ -_ -. 400 400 400 800 800 800 - - - 200 00 4 00 - - 200 - 610 -- - -- --...- -- - - - -- - - - -- 3 00 - - - - - 300 15.00 1500 300 300 300 300 300 300 400 100 400 - - 500 1 00 - — - 600 600 200 600 1200 1200 300 60900 200 200 - 200 200 2 00 2 00 - 200 3 00 300 400 1.00 - - -- -- - - - - - 1 00 - - -- -- -- -- 100 9 00 400 400 - 400 1 00 1 QO 1 00 1 00 100 100 1 00 2,00 200 - 608 o0 000 - 000 0 00 -- — 0 600 600 1 00 2.00 000 0 180 000 360 540 720 900 1080 1260 1440 1620 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 0 00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 00 0 00 0 180 360 540 720 900 1080 1260 1440 1620 000 0 00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 000 - — 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 --- -- Hyd No 1 Time (min) -- Hyd No 2 Time (min) ---- -- flyd No 4 Time (min) --- Hyd No 2 �I f !ICI Total storage used = 4,768 tuft - Hyd No 1 300 - Time (min) --�- -W Hyd No Z Time (min) ----^ Hyd No 4 Time (min) —Hyd No 2 7 l ri rf 1 Total storage used= 5,185 tuft 1 -yr PRE - DEVELOPED HYDROGRAPH 1 -yr POST - DEVELOPED HYDROGRAPH 1 -yr ROUTED HYDROGRAPH 2 -yr PRE - DEVELOPED HYDROGRAPH 2 -yr POST - DEVELOPED HYDROGRAPH Hydrograph Report A soils B Soils C Soils Hydrograph Report Area (acres) 0.130 30 Hydrograph Report 0.00 70 Hydrograph Report CN Pond Report '0.0{ 39 •• 0:.94 61 ,.. , ,• 0.00 74 - CN Area (acres) 0.00 98 • 0118 98 — - - - -- - -- - — ---- - - - - -- -------------------- - - - - -- — ------------------ Hydrailow Hydrographs Extension for AutuCAD7 Civil 3D3 2014 by Autodesk, Inc v 10 3 - - - - -. Thursday, 1 t 1 13 12014 _ -- __ - - -__- ___ - .— _-- __ —_ —_ -- — ____ -- Hydraflow, Hydrographs Extension for AutuCAD0 Civil 3DO 2014 by Autodesk, Inc vi 0 3 Thursday, 11 / 13 12014 Hydrallow, Hydrographs Extension for AutoCADvJ Civil Pond No. 1 - Bioretention Facility #1 3D(F) 2014 by Autodesk, Inc v10 3 Thursday, 11 1 13 12014 -_ — Hydraflow Hydrographs Extension for AutoCADb Civil 3CKD 2014 by Autcdesk, Inc v10 3 Thursday, 11 1 13 ! 2014 __ __ _ Hydraflow, Hydrographs Extension for AuIoCAD:d Civil 3Dil 2014 by Autodesk, Inc v10 3 Thursday, At 1 131 2014 Hyd. No. 1 Hyd. No. 2 Hyd. No. 4 Hyd. No. 4 Pond Data Pre to Bloretention #1 Post to Bioretention #1 Routed Routed Contours - User - defined contour areas Average end area method used for volume calculation Elegmmg Elevation = b06 00 it Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method = SCS Runoff = 10 yrs = 1 min = 1 600 ac = 00% = TR55 Peak discharge = 5.273 cfs Time to peak = 720 min Hyd, volume = 11,993 tuft Curve number = 65 Hydraulic length = Oft Time of conc (Tc) = 8 80 min Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method = SCS Runoff Peak discharge = 10 yrs Time to peak = 1 min Hyd. volume = 1.600 ac Curve number = 00% Hydraulic length = User Time of conc (Tc) = 9 445 cfs = 718 min = 19,334 tuft = 78 = 0 ft = 6 00 min Hydrograph type Storm frequency Time interval Inflow hyd. No Reservoir name = Reservoir Peak discharge = 10 yrs Time to peak = 1 min Hyd, volume = 2 - Post to Bioretention #1 Max. Elevation = Bloretention Facility #1 Max Storage = 5 134 cfs = 723 min = 13,896 tuft = 608 14 ft = 8,131 cult Hydrograph type Storm frequency Time interval Inflow hyd No Reservoir name = Reservoir Peak discharge = 100 yrs Time to peak = 1 min Hyd. volume = 2 - Post to Bioretention #1 Max. Elevation = Bloretention Facility #1 Max Storage = 14 13 cfs = 721 min = 32,559 tuft = 608.56 ft = 10,402 tuft Stage f Storage Table stage (n) Elevation (ft) 000 606,00 1 go 60700 200 60800 a 00 61000 Contour area (sgft) 2,819 3,x13 4,701 8,160 Incr storage (can) 0 3,216 4,157 7,217 Total storage (tuft) 3,216 7,373 20,067 Total preeip Storm duration = 5.60 in = 24 hrs Distribution Shape factor = Type it = 484 Total preeip Storm duration = 5 60 in = 24 his Distribution Shape factor = Type ll = 484 Storage Indication method used Exfiltration extracted (milt Outflow T Storage Indication method used Exfiltration extracted fiom Outflow Culvert/ Orifice Structures [A] [B] [C] Weir Structures [PrfRsr] [A] [B] [C] [D] Rise (in) = 1500 400 000 000 Crest Len (ft) = 1200 200 000 000 Span (in) = 1500 100 000 000 Crest El (ft) = 607 90 U890 000 U 0o N. Barrels = 1 1 0 0 Weir Coen = 333 260 333 333 Invert El (ft) = 602 04 607 DO 000 0 00 Weir Type = 1 Broad --- - -- Length(ft) = 3840 000 000 000 Multi -stags = Yes No No No Q (Cfs) 600 Pre to Bloretention #1 Hyd, No. 1 -- 10 Year Q (Cfs) 600 Q (cfs) 1000 Post to Bioretention #1 Hyd No 2 --10 Year Q (Cfs) 1000 Q (Cfs) 1000 Routed Hyd, No. 4 10 Year Q (Cfs) Q (Cfs) Routed Hyd No 4 -- 100 Year Q (Cfs) Slope I %) = 1 04 N -Value = 013 Orifice Coen, = 060 Multi-Stage = n/a 0 UU 000 013 013 060 060 Yes No 11 n/a 0 60 No Exfil (in/hi) TW Elev (ft) = 0 400 (by Contour) = 000 _ _ 1000 21 00 2100 Note oulreNei, fcv outPO+ rs are analyzed unC<r inle[(ic) And 10le(vc)cCrnol Weir fercnfce c id,voia(ic) and submArvenceis) 800 1800 1800 Stage tft) Stage I Discharge Elev (ft) 5 00 5 00 -- _ -_ -. 800 800 800 00 4 00 - - - 610 -- - -- --...- -- - - - -- - - - -- - - - - - 15.00 1500 400 400 - - 500 600 600 600 1200 1200 300 60900 3 00 300 400 - - -- -- - - - - - - 9 00 - -- 9 00 400 400 - 400 200 2,00 200 - 608 o0 600 600 1 00 2.00 300 - 300 - - 200 200 200 1.00 1 60 60700 000 000 --- 000 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - 0 00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 000 - - 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 --�- -� Hyd No 1 Time (min) ----- Hyd No 2 Time (min) ---- Hyd No 4 ----- Hyd No 2 1 1 11 C I ( Total storage used Time (min) = 8,131 tuft --- Hyd No 4 --- Hyd No 2 CCC? I ! I Total storage used Time (min) = 10,402 tuft 000 0 00 200 4 00 5 00 800 1000 1200 14 00 1000 to 00 2000 2200 24 oosos o0 ---- Total Q Discharge (cfs) 10 -yr PRE - DEVELOPED HYDROGRAPH Drainage Area D Forest/Open Space -- undisturbed, protected forest/open space or reforested land Managed Turf -- disturbed, graded for yards or other turf to be mowed /managed Impervious Cover 10 -yr POST - DEVELOPED HYDROGRAPH RVDeveloped (in) With no Runoff Reduction RVDeveloped (in) with Runoff Reduction Adjusted CN Weighted CN S 78 2,82 1 -year storm 2 -ve ar storm 10 -ve a r storm 1.50 A soils B Soils C Soils D Soils Area (acres) 0.130 30 0.00 55 0.00 70 0,00 „ 77 CN Area (acres) '0.0{ 39 •• 0:.94 61 ,.. , ,• 0.00 74 0.06 80 CN Area (acres) 0.00 98 • 0118 98 0 ;f}b 98 • • • om 98 » , CN RVDeveloped (in) With no Runoff Reduction RVDeveloped (in) with Runoff Reduction Adjusted CN Weighted CN S 78 2,82 1 -year storm 2 -ve ar storm 10 -ve a r storm 1.50 1.65 123 1,111 1,26 2.84 721 72 74 CHANNEL PROTECTION DRAINAGE AREA SUMMARY 10 -yr ROUTED HYDROGRAPH BIORETENTION FACILITY ROUTING SUMMARY POST - DEVELOPED DESIGN PRE - DEVELOPED ROUTED FLOWS STORM FLOWS (CFS) (CFS) 1y r 1.756 0.190 2yr 2.050 .232 10yr 5.273 5.134 100 -yr ROUTED HYDROGRAPH BIORETENTION FACILITY No. l - POND REPORT 2 -yr ROUTED HYDROGRAPH 040# 0 00 DESIGNED BY: PROJECT. SET REV. NO. JDe FARMINGTON COUNTRY CLUB 4 = ENGINEERS DRAWN BY: SOUTH SIDE IMPROVEMENTS VSMP PLAN Q SURVEYORS KTM �� ALBEMARLE COUNTY, VIRGINIA DRAWING NUMBER: �A r TITLE: .= PLANNERS DIHR BY. HYDROGRAPHS C— 14 Lie. No. _2�7 ASSOCIATES DMJ y PO Bu. 4111) 3040 Aveutoie Syume Pl SHEET NUMBER: ' lG� DISCIPLINE: SCA Lynchbufg,VA24502 Chatlutte,srlle,VA22911 WWA NUMBER: FILE NAME: LE. DATE: 141'4 A 1 Phone -1343166080 Phone -43-4 984 2700 CIVIL H: AS SHOWN NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE f� +� ♦�11+ +� ww'ww�4d'bUV4deb11 214045.03 404503C_BMP -3.dwg V: NIA 08/08/14 14 Of 16