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WPO201600038 Plan - Submittal (First) 2016-05-19
[7 IN IM 01 01 IH IG 01 191 IC 19 I_1 O r D O r N o � HILLSBORO LANE < D m Z c S/ TE 0 o� ooj S qTF � 8 v SCALE: 1 =1000' NORTH VICINITY MAP PROJECT NARRATIVE THE OWNER IS PROPOSING THE CONSTRUCTION OF A 6,350 SQUARE FOOT OFFICE BUILDING WITH PRIVATE UTILITIES AND ASSOCIATED PARKING. NECESSARY GRADING, EROSION CONTROL, & SWIM WILL BE PERFORMED. ALBEMARLE COUNTY GENERAL NOTES 1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT-OF-WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. 3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. 4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. 5. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL:VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. 8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). RESPONSIBLE LAND DISTURBER THE RESPONSIBLE LAND DISTURBER SHALL BE THE ENGINEER OF RECORD FOR THE PURPOSES OF PLAN APPROVAL ONLY. THE CONTRACTOR SHALL DESIGNATE A QUALIFIED RESPONSIBLE LAND DISTURBER UPON AWARD OF CONTRACT. CROZET BUSINESS OFFICE 6183 ROCKFISH GAP TURNPIKE WPO 201600OXX WHITE HALL DISTRICT ALBEMARLE COUNTY SHEET INDEX C1 COVER C2 EXISTING CONDITIONS C3 LAYOUT PLAN C4 GRADING PLAN C5 EROSION & SEDIMENT CONTROL PLAN C6 EROSION & SEDIMENT CONTROL NOTES C7 ESC & UTILITY DETAILS C8 SWM PROFILES & DETAILS C9 SITE DETAILS LEGEND ------602----- EX. INTRMDT. CONTOUR ----600-- EX. INDEX CONTOUR + 13.55 EX. SPOT ELEVATION 8" WL EX. WATER LINE 8" SAN EX. SANITARY SEWER 18"RCP EX. STORM PIPE EX. EDGE OF PAVEMENT EX. BUILDING EX. POWER POLE SS EX. SANITARY SEWER MANHOLE STM EX. STORM SEWER MANHOLE S CLEANOUT C) EX. LIGHT POLE WATER LINE REDUCER EX. UNDERGRND POWER LINE UGP G - EX. GAS LINE OHU EX. OVERHEAD CABLE EX. FENCE X EX. TREE LINE AHFH ARROW HEAD TOP OF FIRE HYDRANT APPROX APPROXIMATE ASPH ASPHALT BC BOTTOM OF CURB BIT BITUMINOUS BLDG BUILDING BLK BLOCK BM BENCHMARK BVCE BEGIN VERT. CURVE ELEV BVCS BEGIN VERT. CURVE STA. BW BOTTOM OF WALL CB CINDER BLOCK C&G CURB & GUTTER CMP CORRUGATED METAL PIPE CONC CONCRETE COR CORNER DBL DOUBLE DEFL DEFLECTION DI DROP INLET DIA DIAMETER DE DRAINAGE EASEMENT ELEC ELECTRIC ELEV ELEVATION ENTR ENTRANCE EP EDGE OF PAVEMENT EVCE END VERT. CURVE ELEV. EVCS END VERT. CURVE STA. PROP. INTRMDT. CONTOUR v1 PROP. INDEX CONTOUR 13.55 +---13.05 PROP. SPOT ELEVATION 8" WL PROP. WATER LINE 8" SAN PROP. SANITARY SEWER PROP. STORM PIPE PROP. EDGE OF PAVEMENT PROP. BUILDING PROP. CONCRETE PROP. ASPHALT PAVEMENT (STANDARD/HEAVY DUTY) PROP. GRAVEL �( PROP. GATE VALVE BENCHMARK G PROP. GAS LINE UGP PROP. UNDERGRND POWER LINE X PROP. FENCE - - SITE PROPERTY LINE ADJOINING PROPERTY LINE ABBREVIATIONS EW ENDWALL EXIST EXISTING FDN FOUNDATION FF FINISHED FLOOR FG FINISH GRADE GBE GRADE BREAK ELEVATION GBS GRADE BREAK STATION HOA HOMEOWNERS ASSOCIATION HPT HIGH POINT HSD HEADLIGHT SIGHT DISTANCE INTX INTERSECTION INV INVERT IP IRON PIN LT LEFT LVC LENGTH OF VERTICAL CURVE MH MANHOLE MIN MINIMUM MBL MINIMUM BUILDING LINE MON MONUMENT NBL NORTH BOUND LANE PROP PROPOSED PUE PUBLIC UTILITY EASEMENT PVMT PAVEMENT R RADIUS RT RIGHT R.O.W. RIGHT OF WAY REQD REQUIRED RR RAILROAD RR RAILROAD RYS REAR YARD SETBACK SAN SANITARY SBL SOUTH BOUND LANE SD STORM DRAIN SECT SECTION SE SLOPE EASEMENT SS SANITARY SEWER SSD STOPPING SIGHT DISTANCE SSE SANITARY SEWER EASEMENT STA STATION STD STANDARD STO STORAGE SYS SIDE YARD SETBACK TBD TO BE DETERMINED TBM TEMPORARY BENCHMARK TBR TO BE REMOVED TC TOP OF CURB TEL TELEPHONE TRANS TRANSFORMER TW TOP OF WALL TYP TYPICAL VDOT VIRGINIA DEPARTMENT OF TRANSPORTATION VERT VERTICAL WBL WEST BOUND LANE YD YARD APPROVALS Department Date Department of Community Development Planner/Zoning Engineer Inspections ARB Department of Fire Rescue Albemarle County Service Authority Virginia Department of Transportation Health Department GENERAL NOTES SITE ADDRESS: 6183 ROCKFISH GAP TURNPIKE CHARLOTTESVILLE, VA 22911 1. OWNER: FROEHLING & ROBERTSON, INC. 3015 DUMBARTON ROAD RICHMOND, VA 23228 AGENT: BALZER & ASSOCIATES, INC 1561 COMMERCE ROAD SUITE 401 VERONA, VA 24482 PHONE: 540-248-3220 EMAIL: DODONOHUE@BALZER.CC CONTACT: KENT O'DONOHUE, LA 2. PARCEL INFORMATION PARCEL ID: PART OF 05500-00-00-11000 DB 1124, PG 313 ZONING: HIGHWAY COMMERCIAL + ENTRANCE CORRIDOR OVERLAY CURRENT USE: VACANT PROPOSED USE: COMMERCIAL ADJACENT LAND USE(S): COMMERCIAL, INDUSTRIAL, VACANT SITE AREA: 1.76 ACRES DISTURBED AREA: 1.53 ACRES EXISTING IMPERVIOUS AREA = 0.08 ACRES (5%) PROPOSED IMPERVIOUS AREA = 0.58 ACRES (33%) PROPOSED PARKING/DRIVE AISLE AREAS = 18,308 SF 3. SETBACKS: FRONT = 10'-30' SIDE = 0' REAR = 50' 4. BUILDING FOOTPRINT = 6,350 SQ. FT. BUILDING CONSTRUCTION = TYPE V-B (CLASS 1) BUILDING USE = GROUP B (C-2 OCCUPANCY) NO. OF STORIES = 1 FIREWALL = 1 (REDUCES BUILDING TO 3,750 SF) BUILDING HEIGHT = 35 FT MAX NOT SPRINKLED REQUIRED FIRE FLOW = 1,500 GPM PROVIDED FIRE FLOW = 1,500 GPM BASED ON ACSA HYDRANT FLOW TEST REPORT DATED 2/17/201 6. 5. STORMWATER MANAGEMENT: STORMWATER RUNOFF WILL BE MANAGED THROUGH THE PROPOSED BIORETENTION BASIN TO MEET RUNOFF REDUCTION REQUIREMENTS FOR THE 1 -YR AND 10-YR STORM. WATER QUALITY: WATER QUALITY IS ACHIEVED THROUGH THE BIORETENTION AREA. 6. WATER: PRIVATE (WELL) SEWER: PRIVATE (SEPTIC) 7. PARKING REQ'D: 1 SPACE PER 200 SF OF NET OFFICE FLOOR AREA = 5,080 SF (6,350SF X 80%) / 200 = 25 SPACES (INCL. 1 ACCESSIBLE SPACE) PARKING PROVIDED: 25 SPACES (INCL. 1 ACCESSIBLE SPACE) 8. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES. THE LOCATION OF EXISTING UTILITIES ARE NOT NECESSARILY SHOWN ON THE PLANS AND WHERE SHOWN, ARE ONLY APPROXIMATE. THE CONTRACTOR SHALL, ON HIS INITIATIVE AND AT NO EXTRA COST, HAVE LOCATED ALL UNDERGROUND LINES AND STRUCTURES AS NECESSARY. NO CLAIMS FOR DAMAGES OR EXTRA COMPENSATION SHALL ACCRUE TO THE CONTRACTOR FROM THE PRESENCE OF SUCH PIPE OR OTHER OBSTRUCTIONS OR FROM ANY DELAY DUE TO THE REMOVAL OR REARRANGEMENT OF THE SAME. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE TO UNDERGROUND STRUCTURES. CONTACT "MISS UTILITY" OF CENTRAL VA TOLL FREE 811. 9. ALL UTILITY LINES SUCH AS ELECTRIC, TELEPHONE, AND CATV, OR OTHER SIMILAR LINES SHALL BE INSTALLED UNDERGROUND. THIS SHALL APPLY TO LINES SERVING INDIVIDUAL SITES AS WELL AS TO UTILITY LINES WITHIN THE PROJECT. 10. NO GRAVE SITES WERE OBSERVED DURING THE SURVEY OF THE SUBJECT PROPERTY CONTAINED WITHIN THE LIMITS OF THIS PLAN. 11. PROPERTY IS LOCATED IN FEMA DEFINED ZONE Y. COMMUNITY PANEL NO: 51003 C 0237 D - EFFECTIVE DATE: FEB. 4, 2005. 12. THIS PROPERTY LIES IN THE SOUTH FORK RIVANNA RESERVOIR WATER SUPPLY WATERSHED. 13. SOURCE OF SURVEY & TOPOGRAPHY: SURVEY BY BALZER & ASSOCIATES, INC., DECEMBER 4, 2015, DECEMBER 9, 2015, & FEBRUARY 1, 2016. HORIZONTAL REFERENCE IS NAD83 VERTICAL REFERENCE IS NAVD88 14. TWO VARIANCES FOR SIGNS HAVE BEEN APPROVED ON THIS PROPERTY: VA1975000012 & VA1980000011. NI LI :4 10 FI EI 10 REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 two H of y "D. Kent O'Donohue, Jr?' e Lic. No. 0406001683 S, k'O5-16-2016� PE ARG� W U_ LL LL Y OZ ��v, v! WQ Z cD v! U) Z)Y m U W co N co O U W O U ii l.- CD U 9� EE �2 I- 0 Z J OJ = U W W J 2 � W 00 J Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE AS SHOWN REVISIONS: 05-16-2016 SHEET NO. C I Of 10 JOB NO. 34150050 n IN IM IL 169 IJ IH IG IF 110 0 Ic SITE SOILS TABLE SOIL TYPE SOIL NAME HYDROLOGIC SOIL GROUP 7B BRADDOCK LOAM, 2 TO 7 B PERCENT SLOPES 37C3 HAYESVILLE CLAY LOAM, 2 TO B 15 PERCENT SLOPES SOILS NOTE: SEE SOILS REPORT FOR DETAILED SOILS INFORMATION. G oy \ G ° \ ti� oy °tio ROCKFISH GAP TUFNPIKE ROUTE 250 O 110' R-O- W tiG oy& oy� UTILITY POLE LL 8 HYDRANT Cj fX.IAVLMUT/P T E LAYO LAN FOR -_ --VAR/Bd� -MAPLE & PINES oy o ' ' .- - PORTION TO BE REMOVED 8 -14 CAL. WITH THICK _ _ _ _ - - - - - - - - - UNDERBRUSH EX. TREEL/NE _ C . _ _ _ ........ _ ..... .......... ��TT /00 ---_____ ��----71170 REM9/�1� (TYP.� \ .............................. �_ _ _ / .............................. tic, ------------- /PON .......................... / - / .................. -- _A _ TOP=706.48 ' � GRAVEL (TYP.� lNV /N=705.62 �/ �� `• 08` UTILITY P02£ AND _ �� :.. lNV OUT=70374 Q SIGN 0 OH LINES _ 712 , OHu off .. \..................................................... . #$N�HUARA( `.> \\ � \ `\ G TO BE REMOVED , - - - \ ` OHU `, : . OHu-........................................... . TOP -OF MONUMT) �' N75,042'SB'E \\ \\ oHu ......... . L_- OHU. ELEV=7� — � � � 311.5 � _ _ —_— �---�� `-......... -. —.... - .-..........-.-....... — — oHU— OHU� nE.�, — �HU R00/F OF.. -- oHu — — — — — --- \ \ \..................................................... 4. \ ` \ ` \ \ o \ `I «� � 4*. v .- d. \ .. .. '4 a 4- , <J a :Q / t / .4_Q 1 4 <\ CONCRETE M BE REMOVED a . ° . a <. -, `:I ; I FENCE (TO BE REMOVED) _ I EX. OFFICE BLDG. \ � \ VAR\10US MAPLES, �,3AKS, &\ DUMPSTERS \ \� 1gTHER HAROWO&C `\ i(ARIOUS MAPLES, OAKS, \& 2 STORY \ (TO BE RELOCATED / Eck \ / `\ 8 44, CAL. WITH TH/C,(f `\ \ OTHER HARDWOODS \ FRAME BLDG 4 _ ONDERBRUSH `\ \ 8 �4 CAL. WITH THICK `\ TO BE - - _ ` ` \ UNDERBRUSH \ ( ' - - i ' ` co CLEANOUT (TO\�SVA/Nj `\ REMOVED BLOCK WELL \ + \APPROX.\1,0C. OF �` �\ 7 B (jb BE REMOVED) \\ HOUS£ \ RE`SERVE DRAINFIELD �`\ x `\ \ (TO BE REMOVED) \\ FROEHLING & ROBERTSON INC \\\ ���J TAX MAPIT 55-109A EX. SHED OB.1124 PG. 313 of / \ S--------------------------------- ZONING. HIGHWAY COMMERCIAL \ \ \ ---- \ � \\\ _ USE- COMMERCIAL _ — _ — — — — — — — — — — — — — — — — — — — — �y \ COVERED ® WELL EX. TREEL/NE l CONCRETE PAD (TYP.) ` (TO BEREMOVED) ---------1 FROEHLING & ROBERTSON INC _ _ \ \ y \ \\ TAX- -MAP#-55-110 \ \ 1.762 ACS I J v _ _ - - \ \\ I I APPROX. LOCAT/ON OF EX. l o I /• \ `\ ZONING -•--HIGH K__COUMERCIAL-------------- \ I SEPTIC FIELD \ I I `\FRAME SHE\C� \\\ USE.• VACANT \ h `\ \ \\\ \ \ I / --__- � QQ -- Imo\ -------------- \ \------------ APPROX`\ LOC. OF\�\ \\ -- ---/-----___,\\\ 14" PINE P� I MARY D�AI N FI ELD `� JC O 3 7 C 3 r— SOIL TYPE, TYP. \ I 1 ` / SOIL BOUNDARY LINE, TYP. i '\ I I\ VAR/ABLE WATER \�\ i i // �1 I -- -- -- -- -- -- -- ROD/F I \ \` PROTECTION BUFFER BENCHMA,19 v i (TOP OF IAOD) = ELEV=705.56 30000 63 55 I \ I \ \ �Oj� / 1 FROEHLIIVG & ROBERTSON; ZINC 11 ROD/F \ +, TAX MAP# �5-109 • 1124 I'G.•313 �-- I ZONING.- RU AL AREAIS ' I h 1© It USE.• VACANT Iit I I ZIt \ I I I l \ N74 °53',K'E \ 1 A l \\ R00 F i I / I I I \ I I If_9 . 98 I I I I I I 20 0 20 140 60 SCALE: 1 NI LI :14 JI HI FI El Wi' Mje REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 H 0P r D. Kent O'Donohue, Jr?' Lic. No. 0406001683 S, kO5-1 6-201611' E A W U_ U_ U_ 0 w Y U)z U0� W~ a Za C� n U) UJY �0 O co co co co W N 0 U U) Z 0 Z 0 C) r V Z �� �/� U) X w El iu U � 07 � 0 Z J 0 J = U w W J LU 00 Q D DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 191 SCALE REVISIONS: 05-16-2016 SHEET NO. 1 "— r)n' C2 of 10 JOB NO. 34150050 1 2 3 4 5 6 1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 oy� 0 °ye I HYDRANT 0 ROCKfI5H GAP TURNPIKE \ °tip 208' TO C HILLSBORO LANE I OF 325' NTX. RE TO C� OF PRO � NATA ENTRANCE ROUTE 250 °tip _ o_ N (110' R-0-W1 \ FLOW LINE CONTR. TO NEAT SAW -CUT o 00 - -- N % - '—&- MATCH. EX. PVMT ENTRANCE (SEE DETAIL) oy -` -,SWALE - EX. PVMT. TO BE 0 50' PER ° 50' TAPER R25' \\,- - -----_ _ - REPLACED WITH GRASS SWALE � �0'� 01- R25' _ --rSIOBM GRATE - M - °tip PROP. E-O-P TOP=706.4E lNV 1N=705.62 M "- INV OUT=703.74 Q 10' 0' BLDG. SETBACK o C0 J DITCH TO CONVEY WATER 0 U OHU HU OHU OHU� 0 Hu oHu- oHu — _AWAY FROM FOUNDATION _ _ _ I 16.0' 14.0' - - - - - - - I OHU OHU � 0HU - - - - - oHu— nl — �HU L 7- \ a (TYP) (TYP) 89' � � 18.0' (TYP) t x / I � 131 .52' OFFICE BUILDING 32' o 41 ° 0 o a 1 —STORY 0 o I �X Rooms m 6,350 SQ.FT. 0 o a FFE=711.00 m a 49.0 ACCESSIBLE I / K -�- - - - - 84' NYCOPLAST DRAff�B7�STN PARKING I / I K PROP. TO COLLECT ROOF LEADERS o (SEE DETAIL) FIREWALL TOP=710.40 PLUMBER CONN. n = 00 I ❑ I co APPROX. LOC. OF / INV=707.40 FROM WELL RESERVE DRAINFIELD PROP, "SAN. 8" TYPE S HDPE FOR 8"HDPE 8"PE 8"HDPE AI —ROOF 1 1.0SEPTIC;'SYSTEM I OTHERS) LEADER °c8"HDPE 11 a HANDICAP II I / CONN. % PARKING SIGN / I / ' O MIN. SLOPE, _ I (SEE DETAIL) I I I J TYP. _ J / 00 cn APPROX. WELL 5P PLUMBER 8 0 , r cn LOCATION CONN. (BY OTHERS) / 1 / / ROOD CONC. SIDEWALK, TYP. J (SEE DETAIL) CG-2 I (TYP.) ® WELL �00 12$' TYPE o MONOLITHIC SIDEWALK, TYP. - I I - - - - - - - - - -I S HDPE (SEE DETAIL) I 130.73' °a �`' CG-6 —i I / av (TYP.) I / R4.00' / 1 "HDP TRAFFIC RATED NYLOPLAST I R1.50' DRAIN BASIN W/ H25 CGI 7 FOR �� I \ ��� o RATED FLAT TOP OR EQ. - 24' ACCESS I I I H 4 DOCK & \ ROLL -OFF 10'X20' DUMPSTER PAD %'. N TOP=707.35 INV=704.50 R3.00 I I I H DUMPSTER TRAFFIC RATED NYLOPLAST GRATE E- 0- P I \ INLET - H25 RATED TOP=706.80 OREQ. _ 1 60 I (TYP.) I I I I \ INV=704.80 N I I I I \ i a , m I / G APPROX. LOC. OF %' 5' GRAVEL DIAPHRAGM -� 6 I I I I G PRIMARY DRAINFIELD SEE DETAIL 20, 10.00' o' I I � -- 22. 35' ACCESS ESMT. � I I 1 1113.78----------- 17_280 ,1� SEOTMENT FOREBAY W/ I e BIO—RETENTIO �1 \ LOW FLOW CONC. WEIR -L� PROP. TREELINE, TYP. / (SEE DETAIL) 1 6.71' _ - �61 .57' 1 F (SEE ESC & GRADING PLAN FOR TREE PROTECTION) CONSERVATION OPEN SPACE ESMT. _ Al /_ - I 30' & VAR. TEMP. CONSTR. ESMT. I F _ CO ( MOWING LIMITED TO 4 - _ HIGH FLOW CONC. WEIR TIMES PER_YEAR)_ (SEE DETAIL) I / - - - SEDIMENT FOREBAY W/ - - LOW FLOW I VAR/ABLE WATER PROTECTION BUFFER CONC. WEIR (SEE DETAIL) 20' BUFFER D 50' BLDG. SETBACK EX. VEGETATION TO D REMAIN AS BUFFER GENERAL NOTES: I _ I 1. CONTRACTOR SHALL VERIFY DEPTH AND LOCATION OF ALL C UNDERGROUND UTILITIES BEFORE EXCAVATION SHALL OCCUR. C i 2. ALL RADII SHOULD BE ASSUMED 5' UNLESS SHOWN OTHERWISE. 3. KNOX BOX REQUIRED, CONTACT ALBEMARLE COUNTY FIRE MARSHAL OFFICE FOR LOCATION. 4. VISIBILITY OF ALL MECHANICAL EQUIPMENT FROM THE ENTRANCE CORRIDOR SHALL BE ELIMINATED. LEGEND: B I PROP. PAVEMENT B (SEE DETAIL) I a PROP. CONC. SIDEWALK a av (SEE DETAIL) 20 0 20 40 60 A PROP. DUMPSTER PAD I A I I (SEE DETAIL) SCALE: 1 " = 20' 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 21 REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 LT 0p D "D. Kent O'Donohue, Jr.' Lic. No. 0406001683 F, 7 05-16-2016 W ' ,O ti`S `,PEAL0 Uj U_ LL LL ow Y U^) z U 0� W~ Za CD U) Wrn LL � 0 CIOco co co co LLJ N O U ii I- CD U 9� U Z J OJ = U W J 2 < W 00 Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE1 "=20' REVISIONS: 05-16-2016 SHEET NO. 0 JOB NO. 34150050 1 1 2 3 4 5 6 7 8 9 10 11 12 13 144 15 16 17 18 19 20 21 GRADING NOTES: 0 1. REMOVE TREES, SHRUBS, GRASS, AND OTHER VEGETATION, IMPROVEMENTS OR 0 OBSTRUCTIONS AS REQUIRED TO PERMIT INSTALLATION OF NEW CONSTRUCTION. REMOVE oy TREES AND OTHER VEGETATION, INCLUDING STUMPS AND ROOTS, COMPLETELY IN AREAS G REQUIRED FOR SUBSEQUENT SEEDING. CUT OFF TREES AND STUMPS IN AREAS TO \ RECEIVE FILL MORE THAN THREE FEET IN DEPTH TO WITHIN EIGHT INCHES OF THE ORIGINAL GROUND SURFACE. oy G 2. BARRICADE OPEN EXCAVATIONS OCCURRING AS PART OF THIS WORK AND OPERATE WARNING LIGHTS AS RECOMMENDED BY AUTHORITIES HAVING JURISDICTION. N o \ tiG N 3. CUT SURFACE UNDER PAVEMENTS TO COMPLY WITH CROSS SECTIONS, ELEVATIONS, AND oy �\ GRADES AS INDICATED. \ 4. EXCAVATE TRENCHES TO UNIFORM WIDTH CONFORMING TO VDOT STANDARD PB-1 FOR STORM DRAINAGE PIPING. 5. PREVENT SURFACE WATER AND SUBSURFACE OR GROUND WATER FROM FLOWING INTO EXCAVATIONS AND FROM FLOODING PROJECT SITE AND SURROUNDING AREA. DO NOT ALLOW WATER TO ACCUMULATE IN EXCAVATIONS. REMOVE WATER TO PREVENT SOFTENING ROCKRSH&I"91 T f NPIKf °y� M M OF FOUNDATION BOTTOMS, UNDERCUTTING FOOTINGS, AND SOIL CHANGES DETRIMENTAL TO- AND FOUNDATIONS. CONVEY WATER WHEN ATMOSPHERIC OF SISB RADESESS ROUT 250 \ oy� TEMPERATURE N 3 l �0 � R-Q-W) °tiG \ 710.94 710.07 6. PROTECT EXCAVATED BOTTOMS OF ALL FOOTINGS AND TRENCHES AGAINST FREEZING WHEN -- { 71 Q.44 _ 709.57 ATMOSPHERIC TEMPERATURE IS LESS THEN 35°F (1°C). L 7. FINISH LAWN AREAS TO WITHIN ONE INCH ABOVE OR BELOW REQUIRED SUBGRADE ELEVATIONS. SHAPE SURFACE UNDER WALKS AND PAVEMENTS TO LINE, GRADE, AND ___--'---- -------------------------- _ ° -� c - ■ ■-■-E■ H-■-■ Ems■ oytj _ _ _ -__ 1\-- --� - - \ ®■��®■tic®■�■-■■�®b®■-Cr L CROSS SECTION, WITH NOT MORE THAN 1 /2" ABOVE OR BELOW REQUIRED SUBGRADE _- - - - - - - - - - - - - - - - - - oy� ` �_ ELEVATION.----710---- 8. PROTECT GRADED AREAS FROM TRAFFIC AND EROSION. REPAIR AREAS WHICH HAVE ------ ell \\��o \ ,----- ----- -------------------->> - o-,710.30 �a SETTLED, ERODED, OR BECOME DAMAGED DUE TO CONSTRUCTION ACTIVITIES AT NO ��� `\ `\ 6 _ _ `\ `\\ ADDITIONAL COST TO OWNER. \ �, -- 709.80 tiG - 9. SPREAD TOPSOIL TO A DEPTH OF 6" OVER ALL DISTURBED AREAS NOT RECEIVING WALKS, 4eNqHUARK \ TOP -OF MONUA4�T� �06'\ \`\ \ \ \\-__-_ _/ Ci; -OHLI oHu oHu- oHu oHu- K PAVEMENT, WALLS OR BUILDING, INCLUDING TRENCHES. IMMEDIATELY FOLLOWING ,' \ L =7 >t. �\ ` \ ■ ■ - EEV� - .. 712 71 1 .03 Y `- ■ oHu-oHu K PLACEMENT OF TOPSOIL, DISK THE ENTIRE TOPSOILED AREA AND RAKE FREE OF STONES - _ _ - - -• _ _ \ • ,' `.\ `\\ -� 71 R:1-7-----------710.70 710.53'� 0 _ _ 709.93 - - - - - - - i „ AND DEBRIS OVER 1 /2 IN ANY DIMENSION. PROVIDE A FINISHED SURFACE FREE OF - / \ o \\ - ' \ \\ \' • \�- 710 710.20 709.43 DEPRESSIONS OR HIGH SPOTS. SEED IMMEDIATELY. \ - _ - ^ - �\ - - - \\ - - - o T --- 10. FINISH GRADE AROUND ALL BUILDINGS SHALL BE A MINIMUM OF 6" BELOW FINISHED v` 10 �\ �� ` 7 ` � \ � \ \� � - / 10.68 I 710.18 � I - , FLOOR ELEVATIONS. � ��\ �\ I, � OFFICE B;UILDING �` ' 11. PROVIDE A MINIMUM OF 5% SLOPE FOR A DISTANCE OF 10' AWAY FROM ALL BUILDINGS `\\\ `� o 1 -STORY I J FOR POSITIVE DRAINAGE. \ �o ` `\ \`\ \\ c - - \`\ 6,350 SQ.FT:,, 0 I J 12. ALL SIDEWALKS SHALL CONFORM TO ADA REQUIREMENTS WITH A MAXIMUM SLOPE OF 5% ROQF SLOE `\, •' `\ `\ \\\- o \ 0 \ �' FFE=71 1.00 m 709.88 \' I AND A MAXIMUM CROSS SLOPE OF 2%. `., 69�\ - - - - `\ - - �\ - - - - rt\ -�- - - _j 709.88 \ - �, •' \APPROX.\ HOC. OF ++ \� RNERVE DRAINFIELD `\\ �\\\ 8"HDPE 8"HDPE 8"HrDPE 8"HDPE 719.60 71 10 00 --------- .. \\\\ \\ \` \\\ 710.20 DRIP LINE `\\ \\ ♦:,\\ `\\ �Q� \\ 7 9.70 710.70 20 H PROTECTIVE DEVICE ^ \ \ ♦ � \ \ \ \ \\\ \\ \\\ / \ \\ .., �......, o ♦ .. j .....- ej'\ I LIMITS OF 1 \ .53 ACS DISTURBANCE H MAXIMUM LIMITS OF CLEARING AND GRADING . PROPOSED GRADING , \ \ \ / ROOF SLOPE \ I \ \ \ \ \\ \\ ♦ \\ 710.88 -i. - -• - . • \ , \ / \\ \ \\ \ _709.19 o -- -----I I \ \ \ \ y \`\\ 708.69 -` - - - - - - - - ._ I ` MIN. 5' of �'f '�I� � WHERE DRIPLINE THAN \ ♦ • \ \\ \ \\ / \ \` TW:710.88 I IS LESS TW:71 �. 8 �\\\\\ �\\\\ G CONSTRUCTION OPERATIONS RELATIVE - - `\ \ \\ \ / `\ \`\ \ `\ 706.88 B�06.8 70$ 1 'HDPE-- I \ ` `\ I i G TO THE LOCATION OF PROTECTED TREES I \ �, �W:707.12 " -e . 7-07:68 ---- 708 EiO---------------------- I Source: Public Facilities Manual, Vol. III, Fairfax Co., Va., 1976 Plate 3.38-1 \ \ \ \ \ \ ` \ `\ ' `\ \ \ ` \ 706.88 +� \ \ `\ \\ `\ 707.18 708.10 � I I I I ` ♦\ ` \ \\ \ \\ \ \ \ N \ N 707.32 _ I 06 ' �� ` I TP I I 3.38 TREE PRESERVATION & PROTECTION TP - - - - - ,� - 706:82_ v v ♦ `, 4 \\ ( `\\ \ \\ •;, `\\ \\\ �\\ \\ \\\ 0 \ ,\♦ \\ \ i -- -� --- __---- I ( i \ \\\ `\\ \\\\ `\\ \� \�---_______ 706.25 I I \\ F \\\ 706.2 ` I I I F \ APPROX`\ LOC. OF'\ \ _ X 2:1 P' IMARY D'RAINFIELD \\ \ ` `\ \ ♦• `\ CAN USE TP, SF, SF AS (SEE ESC-=-=��--------_1 1 I E \ \\\ \\ \ \\ TP PLAN FOR I I BIO-RETENTIOf�- `\----J E \♦ _ \ `\ SF. LOCATION) ,-- 1 1� � I I \ \\ \L`I,MITS OF DISTURBANCE ♦' � � `- 1.53 ACS \\ ` �`.l _ ro _ 704 1 706.35 , - 706 705.85,' I - - I \ , `. �, \ ♦ \� \, `� `- - 706 I CV I \ _ 706.47 All -A ` VAR/ABLE WATER PROTECTION BUFFER (TOP OF fPOD) / ELEV=705.56 B \ \ \ `\ J / / I I i� i / i B 1 20 0 20 40 60 A ++ \ I+ i i I I SCALE: 1 " = 20' 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Lj REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 " �T H OF r "D. Kent O'Donohue, Jr?' Lic. No. 0406001683 S, kO5-1 6-201611' E A W U_ LL LI_ O Lu Y U�^) Z U 0� w ~ a ZQ 0 U) �Y � 0 C� M 00 w N O U Z Q 0 Z L.L I-- CD U IY U7 � 0 Z J 0 J = U W W J 2 < W 00 Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 1 "=20' SCALE REVISIONS: 05-16-2016 SHEET NO. JOB NO. 34150050 ALBEMARLE GENERAL CONSTRUCTION NOTES 0 INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. 3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN N ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. 4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. 5. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL:VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED M NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. 8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). LI 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 K MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL 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 J 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. 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 RUNOFFPRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR 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. H 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 IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:OOAM TO 9:OOPM. G 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 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. F 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 A 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 IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED 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 E 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/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED 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 D REPAIR 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. C :■ GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING CONSTRUCTION OF DAMS. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. CONSTRUCTION NARRATIVE 1. CONTRACTOR SHALL OBTAIN A GENERAL SWPPP PERMIT PRIOR TO BEGINNING OPERATIONS AND SHALL FOLLOW INSTRUCTIONS AND INSPECTION CRITERIA OUTLINED WITHIN SWPPP. 2. INSTALL GRAVEL CONSTRUCTION ENTRANCE. ALL CONSTRUCTION TRAFFIC SHALL ENTER AND EXIT THE SITE VIA SITE CONSTRUCTION ENTRANCE ONLY. DURING WET WEATHER CONDITIONS, DRIVERS OF CONSTRUCTION VEHICLES SHALL BE REQUIRED TO WASH THEIR WHEELS BEFORE ENTERING HIGHWAY. CONSTRUCTION DEBRIS SHALL BE REMOVED FROM ROADWAYS DAILY. 3. INSTALL SILT FENCE, DIVERSIONS, AND SEDIMENT TRAP AS SHOWN ON PLANS. PERMANENTLY STABILIZE PERMANENT DIVERSION IMMEDIATELY AFTER INSTALLATION. 4. PLACE TOPSOIL FROM SITE WITHIN STOCKPILE AREAS AS SHOWN ON PLANS. STABILIZE AND INSTALL SILT FENCE FOR STOCKPILE AREAS AS SHOWN. 5. COMMENCE CLEARING AND GRADING OPERATIONS. AS FILL IS ADDED, MAINTAIN FILL DIVERSION TO DIRECT STORMWATER TO SEDIMENT TRAP. 6. ONCE BUILDING PAD ELEVATION IS ACHIEVED, BUILDING CONSTRUCTION MAY BEGIN. 7. INSTALL SITE UTILITIES AND ASSOCIATED ESC MEASURES. 8. PLACE TOPSOIL ON ALL DISTURBED AREAS AND PERMANENTLY STABILIZE. 9. AFTER FINAL STABILIZATION IS ACHIEVED, TEMPORARY MEASURES MAY BE REMOVED AND FINAL GRADING FOR BIORETENTION AREA MAY BEGIN. 10. INSTALL BIORETENTION AREA ONLY ONCE COMPLETE SITE STABILIZATION IS ACHIEVED. CONTRACTOR TO COORDINATE WITH DESIGN PE/LA FOR INSPECTIONS AND CERTIFICATION OF BMP BEFORE, DURING, AND AFTER INSTALLATION. THE CONTRACTOR IS RESPONSIBLE FOR SWM INSPECTION & CERTIFICATION FEES ASSOCIATED WITH PROJECT. 11. UPON COMPLETION OF THE PROJECT AND APPROVAL BY THE PROJECT ENGINEER AND LOCAL COUNTY OFFICIALS THE AREA MUST BE RESTORED TO ITS ORIGINAL CONDITION. ALL ESC MEASURES ARE TO BE REMOVED FROM THE SITE, UNLESS OTHERWISE DIRECTED BY THE PROJECT ENGINEER OR LOCAL COUNTY OFFICIAL. EROSION & SEDIMENT CONTROL LEGEND TEMPORARY STONE C E 3.02 CONSTRUCTION ENTRANCE 3.05 SILT FENCE S F 3.07 STORM DRAIN INLET PROTECTION 3.09 TEMPORARY DIVERSION DIKE D D 3.10 TEMPORARY FD FILL DIVERSION TEMPORARY 3.11 RIGHT OF WAY RWD DIVERSION 3.12 DIVERSION DV 3.13 TEMPORARY SEDIMENT TRAP ST 3.19 RIP RAP R R SEDIMENT TRAP SCHEDULE: 3 29 SURFACE c ROUGHENING S R 3.30 TOPSOILING TO 3.31 TEMPORARY -�-5 SEEDING 3.32 PERMANENT PS SEEDING 3.33 SODDING s o *SOD BIORETENTION AREA ONCE INSTALLED. SEE BIORETENTION DETAIL & LANDSCAPE PLAN. 3.35 MULCHING :1(9 SOIL STABILIZATION B 3.36 BLANKETS & MATTING M E-3TREE PRESERVATION & PROTECTION T P -- - - -TP - TOTAL TOTAL WET & DRY WET VOL. DRY VOL. TOP OF TOP OF OUTLET/ TOP OF L to W ratio TOTAL VOL. (CU. VOL. (CU. VOL. (CU. BOTTOM OUTLET ST# YD.) YD.) YD.) (CU. YD.) (CU.YD.) Lop of Dry Wtop of Dry LBottom WBottom DWet Dory DTotal BERM DRY/STONE TOP OF ELEV. BERM LENGTH at w et/dry AREA (AC.) (REQUIRED) ALCULATED (REQUIRED) ALCULATED ALCULATED (FF.) (FF.) (FF.) (FF.) (FF.) (FF.) () �� �� WET ELEV.WIDTH line 1 0.78 105 1 125 1 52 1 64 1 60 60.0 1 30.0 1 50.0 1 20.0 1 1.5 1 1.0 2.50 1 703.50 1 702.50 1 701.50 1 700.00 2.00 1 5 1 2.30 ■© ■0 ■114 _ ---- ti ■ i O --- ■ M U TO \ ------------ Ci `\\\ .`\\ �\\ �\ �`\ 0 TP ��``\\ TS %1'l _0U\ U HU N, OHU 0 `\ �6'\ `\ �__--- O HU OHU OHU- OHU- OHU- DHU- . O _ �� DD \V 710 DV o \\\ ♦ ��`, \ \ OFFICE BUILDING ♦ vv , - \ v 0 1 -STORY S U� moo, c v v 0 6,350 SQ.FT:,< o ROQF SLOE \\ m F F E = 71 1.00 _U ! G CE 696; �• \APPROX.1,0C. OF �` - �� \� ■ RNERVE DRAINFIELD \`� �`� ,� 8"HDPE 8"HDPE 8"HDPE 8"HDPE ri-I 11 W1 PS ■ \� Y \ ` w \MU TO F ----------------- 0 Q - MU TO TS TS FD �\ w I - _ _ - - ® - ` ,- _ _ _ _ LIMITS OF DISTURBANCE \` \ � j STAGING AND MATERIAL \ 1.53 ACS Q SF ROOF SLOPE ■ 0 FNAS�STP ♦♦� , ``�/ \ �� ` �\ _ STORAGE AREA WITH \ ` ♦. `�\ \< �\ �\ IP WASHOUT, DUMPSTER & ----------I E ♦' �� �; PORTA-JOHN \ r n I I \ "X� \ ■ I I a- "HDPE 708 I `-------------------------------- I I I RWD `\ \ \ SEDIMENT TRAP TP I I D t, 0.78 ACS \ I \ `.\ 6_- 7P a- M. SR -_ -----_ ----- ♦ I C APPROX`\ LOC. OFF', ,. PS 700 / SO* �\\ I ` `\ \ �•, PkRIMARY DIZAINFIELD f�` I `) I DV I I \ \ ♦• �\ CAN USE MU TO I ST R 11 , I I I \ SF, SF AS TP -� - - PS I � I � 1 '(SEE ESC S RR I + �. - - - - - - -0 L � \ • \` TP PLAN FOR - I ��- I - - TO T -- `� \ SF., LOCATION); - I i � I B I O ���E N� O N ,� I� III FD LIMITS OF DISTURBANCE ♦ `� PS 6 L----_ 1 I , I B 1.53 ACS L TS TO (�6 --702.50 �� �� `�� \ ♦ �_ TOPSOIL ■ ; 20 0 20 40 60 STOCKPILE700 \\ ■ ■ ■ ■ ■ ■ ■ o SF CAN USE SCALE: 1 " = 20' SF AS TP A \ \\`\\` �� \ ■ I ' it � ,_ - - - - 6 7 8 9 10 11 12 13 1 14 15 1 16 17 18 19 20 21 REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 Z,TH °F, D f r "D. Kent 0, onohue, Jr.' Lic. No. 0406001683 05-16-2016 w .O ti`S 41'E AR_ Z J W U_ � J I.L 0 0 w Y U) z Z 0 U � U WC Q CD Z �= VJY W �O �� w �( Lu °6 N z 0 0 U) U O of w ii I- U 9� U7 � 0 Z J OJ = U W W J 2 < W 00 Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE1 "=20$ REVISIONS: 05-16-2016 SHEET NO. JOB NO. 34150050 9VAC25-840-40 MINIMUM STANDARDS A VESCP must be consistent with the following criteria, techniques and methods: 0 1. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but will remain dormant (undisturbed) for longer than 14 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year. 2. During construction of the project, soil stock piles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for the temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3. A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established N until a ground cover is achieved that, in the opinion of the local program administrator or his designated agent, is uniform, mature enough to survive and will inhibit erosion. 4. Sediment basins and traps, perimeter dikes, sediment barriers 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. 5. Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6. Sediment traps and sediment basins shall be designed and constructed based upon the total drainage area to be served by trap or basin. a. The minimum storage capacity of a sediment trap shall be 134 cubic yards per acre of drainage area and the trap shall only control drainage areas less than three acres. M b. Surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres shall be controlled by a sediment basin. the minimum storage capacity of a sediment basin shall be 134 cubic years per acre of drainage area. the outfall system shall, at a minimum, maintain the structural integrity of the basin during a twenty-five year storm of 24-hour duration. runoff coefficients used in runoff calculations shall correspond to a bare earth condition or those conditions expected to exist while the sediment basin is utilized. 7. Cut and fill slopes shall be designed and 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. L 8. Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume or slope drain structure. 9. Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 10. 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. 11. Before newly constructed stormwater conveyance channels 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. K 12. 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 construction of causeways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. 13. When a live watercourse must be crossed by construction vehicles more than twice in any six-month period, a temporary stream crossing constructed of nonerodible material shall be provided. 14. All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. J 15. The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. 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. Excavated material shall be placed on the uphill side of trenches. 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 off -site property. d. Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e. Re -stabilization shall be accomplished in accordance with these regulations. f. Applicable safety regulations shall be complied with. 17. Where construction vehicle access routes intersect paved 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 public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual subdivision lots as well as to larger land -disturbing activities. 18. All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after the temporary measures are no longer needed, H unless otherwise authorized by the VESCP 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. 19. Properties and waterways downstream from development sites shall be protected from sediment deposition, erosion and damage due to increases in volume, velocity and peak flow rate of stormwater runoff for the stated frequency storm of 24-hour duration in accordance with the following standards and criteria. Stream restoration and relocation projects that incorporate natural channel design concepts are not man-made channels and shall be exempt from any flow rate capacity and velocity requirements for natural or man-made channels: a. Concentrated stormwater runoff leaving a development site shall be discharged directly into an adequate natural or man-made receiving channel, pipe or storm sewer G system. for those sites where runoff is discharged into a pipe or pipe system, downstream stability analyses at the outfall of the pipe or pipe system shall be performed b. Adequacy of all channels and pipes shall be verified in the following manner: 1.1. The applicant shall demonstrate that the total drainage are to the point of analysis within the channel is one hundred times greater than the contributing drainage area of the project in question; or 1.2. (a) Natural channels shall be analyzed by the use of a two-year storm to verify that stormwater will not overtop channel banks nor cause erosion of channel bed or banks; and (b) All previously constructed man-made channels shall be analyzed by the use of a ten-year storm to verify that stormwater will not overtop its banks and by the F use of a two-year storm to demonstrate that stormwater will not cause erosion of channel bed or banks; and (c) Pipes and storm sewer systems shall be analyzed by the use of a ten-year storm to verify that stormwater will be contained within the pipe or system. c. If existing natural receiving channels or previously constructed man-made channels or pipes are not adequate, the applicant shall: 1.1. Improve the channel to a condition where a ten-year storm will not overtop the banks and a two-year storm will not cause erosion to the channel bed or banks; or 1.2. Improve the pipe or pipe system to a condition where the ten-year storm is contained with the appurtenances; ces; or 1.3. Develop a site design that will not cause the pre -development peak runoff rate from a two-year storm to increase when runoff outfalls into a natural channel or will not cause the development peak runoff rate from a ten-year storm to increase when runoff outfalls into a man-made channel; or 1.4. Provide a combination of channel improvement, stormwater detention or other measures which is satisfactory to the VESCP authority to prevent downstream E erosion. d. The applicant shall provide evidence of permission to make the improvements. e. All hydrologic analysts shall be based on the existing watershed characteristics and the ultimate development of the subject project. f. If the applicant chooses an option that includes stormwater detention he shall obtain approval from the VESCP of a plan for maintenance of the detention facilities. the plan shall set forth the maintenance requirements of the facility and the person responsible for performing the maintenance. D g. Outfall from a detention facility shall be discharged to a receiving channel, and energy dissipators shall be placed at the outfall of all detention facilities as necessary to provide a stabilized transition from the facility to the receiving channel. h. All on -site channels must be verified to be adequate. i. Increased volumes of sheet flows that may cause erosion or sedimentation on adjacent property shall be diverted to a stable outlet, adequate channel, pipe or pipe system, or to a detention facility. j. In applying these stormwater runoff criteria, individual lots or parcels in a residential, commercial or industrial development shall not be considered to be separate C development project. instead, the development, as a whole, shall be considered to be a single development project. hydrologic parameters that reflect the ultimate development condition shall be used in all engineering calculations. k. All measures used to protect properties and waterways shall be employed in a manner which minimizes impacts on the physical, chemical and biological integrity of rivers, streams and other waters of the state. I. Any plan approved prior to July 1, 2014, that provides for stormwater management that addresses any flow rate capacity and velocity requirements for natural or man-made channels shall satisfy the flow rate capacity and velocity requirements for natural or man-made channels if the practices are designed to (i) detain the water quality volume and to release it over 48 hours; (ii) detain and release over a 24-hour period the expected rainfall resulting from the one year, 24-hour storm; and (iii) B reduce the allowable peak flow rate resulting from the 1.5, 2, and 10-year, 24-hour storms to a level that is less than or equal to the peak flow rate from the site assuming it was in a good forested condition, achieved through multiplication of the forested peak flow rate by a reduction factor that is equal to the runoff volume from the site when it was in a good forested condition divided by the runoff volume from the site in its proposed condition, and shall be exempt from any flow rate capacity and velocity requirements for natural or man-made channels as defined in any regulations promulgated pursuant to § 10.1-562 or 10.1-570 of the Act. m. For plans approved on and after July 1, 2014, the flow rate capacity and velocity requirements of § 10.1-561 A of the Act and this subsection shall be satisfied by compliance with water quantity requirements in the Stormwater Management Act (§ 10.1-603.2 et seq. of the Code of Virginia) and attendant regulations, unless such land -disturbing activities are in accordance with 4VAC50-60-48 of the Virginia Stormwater Management Program (VSMP) Permit A Regulations. n. Compliance with the water quantity minimum standards set out in 4VAC50-60-66 of the Virginia Stormwater Management Program (VSMP) Permit Regulations shall be deemed to satisfy the requirements of Minimum Standard 19. 3.36 - Soil Stabilization Blankets &Matting EROSION CONTROL NARRATIVE Installation of a rotective blanket or soil stabilization mat on a re ared stee slo a or channel 1 FA 3 4 5 PROJECT DESCRIPTION: The purpose of this project is to propose the construction of a 6,350 square foot office building with private utilities and associated parking. Necessary grading, erosion control, & SWM will be performed. The total subject property area is 1.76 acres. The total area of disturbance is 1.53 acres. EXISTING SITE CONDITIONS: Currently the site topography consists of a hilltop with stormwater run-off sheet flowing from the hilltop to an existing cultivated swale to the southwest. The northeast portion of the property flows into an existing paved ditch that flows into an existing DI-1 within the R-O-W of Rockfish Gap Turnpike. Existing slopes range from <1 % to 17%. Existing ground cover consists of impervious areas, short grass, brush, and dense trees. ADJACENT AREAS: The adjacent property to the east is the owner's current office location. Rockfish Gap Turnpike fronts the road to the north. An existing industrial site is to the west, and a vacant residential parcel is to the south. OFF -SITE AREAS: -The adjacent property to the east is the owner's current office location. The intention is to grade a shared entrance drive between these two parcels and close off the existing entrance to Rockfish Gap Turnpike. Necessary grading and demolition will be required on this property to achieve this entrance as shown on plans. -If a borrow or waste site is needed, it shall be a permitted erosion control site. SOILS: 3.38 - Tree Preservation & Protection Protection of desirable trees from mechanical and other injury during land disturbing and construction activity. 8. PERMANENT STABILIZATION: All areas disturbed by construction shall be stabilized with permanent seeding and/or sodding immediately following finish grading in accordance with the plans. Seeding shall be done according to VESCH Standards & Specifications 3.32. Erosion control blankets will be installed over fill slopes 2H:1 V or steeper which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. Cut slopes of 3HAV or steeper shall have surface roughening performed according to VESCH Standards & Specifications 3.29, Surface Roughening. Mulch (straw or fiber) will be used on relatively flat areas. In all seeding operations, seed, fertilizer and lime (if required per soils report) will be applied prior to mulching. 9. STORMWATER MANAGEMENT: Stormwater management measures for run-off quantity and quality are addressed by a bioretention basin and open space dedication. (Refer to'Engineering Report' dated 05-16-2016) Calculations for the capacity of the stormwater drainage structures and pipes proposed within these site plans were not documented since they are for roof collection and minor inlet only and do not exceed 1 cfs in collection. All pipes and structures have been checked for adequacy. Please see the 'Engineering Report' dated 05-16-2016 provided with the plan submittal. 10. MAINTENANCE: See Sheet C2 and any supplemental soil reports for site specific soils data. 6. CRITICAL AREAS: Slopes within the Managed Slope Areas shall be graded with care. Care must be taken to minimize erosion of slopes steeper than 3H:1 V by use of soil stabilization blankets & matting per section 3.36 of the VESCH. 7. EROSION AND SEDIMENT CONTROL MEASURES: Unless otherwise indicated, all vegetative and structural erosion and sediment control practices shall be constructed and maintained according to minimum standards and specifications of the Virginia Erosion & Sediment Control Handbook (VESCH). The minimum standards of the VESCH shall be adhered to unless otherwise waived or approved by a variance. The following measures are proposed: 3.02 - Temporary Construction Entrance A stone pad, located at points of vehicular ingress and egress on a construction site, to reduce the soil transported onto public roads and other paved areas. Temporary construction entrance(s) shall be installed as indicated on the plans. 3.05 - Silt Fence Barrier Silt fence sediment barriers will be installed down -slope of disturbed areas to filter sediment -laden runoff from sheet flow as indicated on this sheet. 3.07 - Storm Drain Inlet Protection To prevent sediment from entering storm drainage systems prior to permanent stabilization of the disturbed area. 3.09 - Temporary Diversion Dike Used to divert off -site runoff from disturbed areas, or to divert sediment -laden runoff to a sediment trapping structure. 3.10 - Temporary Fill Diversion A channel with a supporting ridge of soil on the lower side, constructed along the top of an active earth fill. 3.11 -Temporary Right -of -Way Diversion A ridge of loose gravel to divert run-off across a disturbed area to a stabilized outlet where vehicular traffic must be accommodated. 3.12 - Diversion A permanent channel with a ridge on the lower side constructed across a slope to reduce slope length and intercept and divert stormwater runoff to a stabilized outlet at non -erosive velocities. 3.13 - Temporary Sediment Trap Temporary sediment trap(s) shall be constructed before land disturbance as indicated on the plans. 3.19 - Rip -Rap Permanent erosion resistant ground cover of large, loose, angular stone installed where soil conditions, water turbulence/velocity, etc, may erode under design flow conditions. 3.29 - Surface Roughening Leavingthe slopes roughened b not fine grading to reduce run-off velocity, provide sediment P 9 Y 9 9 Y, p trapping, and allow for increased infiltration promoting establishment of vegetation on exposed slopes. 3.30 - Topsoiling Topsoil will be stripped from areas to be graded and stockpiled for later use. Stockpiles shall be stabilized with temporary seeding, 3.31. 3.31 Temporary Seeding Establishment of temporary vegetative cover on disturbed areas that will not be brought to final grade for 30 days to a year. Temporary seeding shall be as follows: Date Species lbs. per ac. Sept. 1 - Feb. 15 50/50 mix annual ryegrass & winter rye 50-100 Feb. 16 - Apr. 30 annual ryegrass 60-100 May 1 - Aug. 31 german millet 50 Note: Alternate seeding per VESCH, Table 3.31-C. 3.32 - Permanent Seeding Establishment of perennial vegetative cover by planting seed on rough -grade areas that will not be at final grade for over a year. Permanent seeding shall be as follows: General Slope (3:1 or flatter) lbs. per ac. kentucky 31 fescue 128 red top grass 2 seasonal nurse crop (table below) 20 Total = 150 Low Maint. Slope (3:1 or steeper) lbs. per ac. kentucky 31 fescue 108 red top grass 2 seasonal nurse crop (table below) 20 crownvetch 20 Total = 150 Seasonal Nurse Crop: Date Species Mar. 1 - May 15 annual rye May 16 - Aug. 15 foxtail millet Aug. 16 - Oct. 31 annual rye Nov. 1 - Feb. 29 winter rye 3.33 - Sodding Stabilizing fine -graded disturbed areas by establishing permanent grass stands with sod. 3.35 - Mulching Application of plant residues or other suitable material to disturbed areas to prevent erosion and reduce overland flow velocities. Fosters plant growth and provides insulation from heat and cold Applied to seeded areas or disturbed areas that cannot be seeded due to the season. 3.02 - Temporary Construction Entrance The entrance shall be maintained in a condition which will prevent tracking or flow of mud onto public rights -of -way. This may require periodic top dressing with additional stone or the washing and reworking of existing stone as conditions demand and repair and/or cleanout of any structures used to trap sediment. All materials spilled, dropped, washed or traced from vehicles onto roadways or into storm drains must be removed immediately. The use of water trucks to remove materials dropped, washed, or tracked onto roadways will not be permitted under any circumstances. 3.05 - Silt Fence Barrier a. Silt fences shall be inspected immediately after each rainfall and at least daily during prolonged rainfall. Any required repairs shall be made immediately. b. Close attention shall be paid to the repair of damaged silt fence resulting from end runs and undercutting. c. Should the fabric on a silt fence decompose or become ineffective prior to the end of the expected usable life and the barrier still be necessary, the fabric shall be replaced promptly. d. Sediment deposits should be removed after each storm event. They must be removed when deposits reach approximately one-half the height of the barrier. 3.07 - Storm Drain Inlet Protection a. The structure shall be inspected after each rain and repairs made as needed. b. Sediment shall be removed and the trap restored to its original dimensions when the sediment has accumulated to one half the design depth of the trap. Removed sediment shall be deposited in a suitable area and in such a manner that it will not erode. c. Structures shall be removed and the area stabilized when the remaining drainage area has been properly stabilized. 3.09 - Temporary Diversion Dike The measure shall be inspected after every storm and repairs made to the dike, flow channel, outlet or sediment trapping facility, as necessary. Once every two weeks, whether a storm event has occurred or not, the measure shall be inspected and repairs made if needed. Damages caused by construction traffic or other activity must be repaired before the end of each working day. 3.10 - Temporary Fill Diversion Since the practice is temporary and under most situations will be covered the next work day, the maintenance required should be low. If the practice is to remain in use for more than one day, an inspection will be made at the end of each work day and repairs made to the measure if needed. The contractor should avoid the placement of any material over the structure while it is in use. Construction traffic should not be permitted to cross the diversion. 3.11 - Temporary Right -of -Way Diversion The practice shall be inspected after every rainfall and repairs made if necessary. At least once every two weeks, whether a storm has occurred or not, the measure shall be inspected and repairs made if needed. Right-of-way diversions, which are subject to damage by vehicular traffic, should be reshaped at the end of each working day. 3.12 - Diversion Before final stabilization, the diversion should be inspected after every rainfall and at least once every two weeks. Sediment shall be removed from the channel and repairs made as necessary. Seeded areas which fail to establish a vegetative cover shall be reseeded as necessary. 3.13 - Temporary Sediment Trap a. Sediment shall be removed and the trap restored to it original dimensions when the 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 manger that it will not erode and cause sedimentation problems. b. Filter stone shall be regularly checked to ensure that filtration performance is maintained. Stone choked with sediment shall be removed and cleaned or replaced. c. The structure should be checked regularly to ensure that it is structurally sound and has not been damaged by erosion or construction equipment. The height of the stone outlet should be checked to ensure that its center is at least 1' below the top of the embankment. 3.17 - Stormwater Conveyance Channel Grass -lined Channels During the initial establishment, grass -lined channels should be repaired immediately and grass re-established if necessary. After grass has become established, the channel should be checked periodically to determine if the grass is withstanding flow velocities without damage. If the channel is to be mowed, it should be done in a manner that will not damage the grass. 3.18 - Outlet Protection a. Inspect after each significant rain for erosion and/or disruption of the rock, and repair immediately. b. Grouted or wire -tied rock riprap can minimize maintenance requirements. 3.32 - Permanent Seeding In general, a stand of vegetation cannot be determined to be fully established until it has been maintained for one full year after planting. Irrigation: New seedings should be supplied with adequate moisture. Supply water as needed, especially late in the season, in abnormally hot or dry weather, or on adverse sites. Water application rates should be controlled to prevent excessive runoff. Inadequate amounts of water may be more harmful than no water. Re -seeding: Inspect seeded areas for failure and make necessary repairs and re-seedings within the same season, if possible. a. If vegetative cover is inadequate to prevent rill erosion, over -seed and fertilize in accordance with soil test results. b. If a stand has less than 40% cover, re-evaluate choice of plant materials and quantities of lime and fertilizer. The soil must be tested to determine if acidity or nutrient imbalances are responsible. Re-establish the stand following seedbed preparation and seeding recommendations. Fertilization: Cool season grasses should begin to be fertilized 90 days after planting to ensure proper stand and density. Warm season fertilization should begin at 30 days after planting. Apply maintenance levels of fertilizer as determined by soil test. In the absence of a soil test, fertilization should be as follows: Cool Season Grasses: 4 lbs. Nitrogen (N), 1 lb. Phosphorus (P), 2 lbs. Potash (K) per 1000 ft.' per year 75% of the total requirements should be applied between Sept. 1 and Dec. 31 st. The balance should be applied during the remainder of the year. More than 1 lb. of soluble nitrogen per 1000 ft? should not be applied at any one time. 3.33 - Sodding a. During the 2 to 3 week establishment stage, sod shall be watered as necessary to maintain adequate moisture in the root zone and prevent dormancy of sod. b. No more than one third of the shoot (grass leaf) should be removed in any mowing. Grass height should be maintained between 2 and 3 inches unless otherwise specified. c. After the first growing season, established sod will require fertilization and may require lime. Follow soil test recommendations when possible, or apply maintenance levels as outlined in Table 3.33-B. 3.35 - Mulching All mulches and soil coverings should be inspected periodically (particularly after rainstorms) to check for erosion. Where erosion is observed in mulched areas, additional mulch should be applied. Nets and mats should be inspected after rainstorms for dislocation or failure. If washouts or breakage occur, re -install netting or matting as necessary after repairing damage to the slope or ditch. Inspections should take place up until grasses are firmly established. Where mulch is used in conjunction with ornamental plantings, inspect periodically throughout the year to determine if mulch is maintaining coverage of the soil surface; repair as needed. Application rate = 2 tons per acre. All mulching shall be anchored in place. 3.36 - Soil Stabilization Blankets and Matting All soil stabilization blankets and matting should be inspected periodically following installation, particularly after rainstorms to check for erosion and undermining. Any dislocation or failure should be repaired immediately. If washouts or breakage occurs, re -install the material after repairing damage to the slope or ditch. Continue to monitor these areas until which time they become permanently stabilized; at that time an annual inspection should be adequate. 11. MANAGEMENT STRATEGIES A. Construction will be sequenced so that grading operations can begin and end as quickly as possible. B. Sediment trapping measures will be installed as a first step in grading and will be seeded and mulched immediately following installation. C. Temporary seeding or other stabilization will follow immediately after grading. Stabilization for all critical areas will consist of EC-2 lining. D. Areas which are not to be disturbed will be clearly marked by flags, signs, etc. E. The job superintendent shall be responsible for the installation and maintenance of all erosion and sediment control practices. F. After achieving adequate stabilization, the temporary erosion controls will be cleaned up and removed. 12. General Notes A. Unless otherwise indicated, all vegetative and structural erosion and sediment control practices will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook (VESCH) and Virginia Regulations 4VAC50-30 Erosion and Sediment Control Regulations. B. The County of Albemarle shall 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 final inspection. C. All erosion and sediment control measures will be constructed prior to or as the first step in clearing and grading. D. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. NI LI I:14 10 E. 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. H F. The Contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the County of Albemarle. G. 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. H. During de -watering operations, water will be pumped into an approved filtering device. I. The Contractor shall inspect all erosion control measures periodically and after each run-off producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. J. The County of Albemarle shall make a continuing review and evaluation of the effectiveness of the erosion control program. The approved erosion and sediment control plan may be amended by the approving authority if on -site inspection indicates that the approved control measures are not effective in controlling erosion and sedimentation or if because of changed circumstanc es, the approved plan cannot be carried out. K. Properties and right-of-way adjoining the site shall be kept clean of mud or silt carried from the site by vehicular traffic or runoff. L. All construction traffic shall enter and exit the site via the construction entrance. M. All pavement areas shall be stabilized with base stone within 30 days of final grading. N. Contractor shall locate and verify the location of all utilities prior to beginning construction. 0. The Contractor shall notify "Miss Utility" before beginning any excavation or utility work (811). FI El In Wi' N Ug REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 H OF D. Kent O'Donohue, Jr?' Lic. No. 0406001683 S, kO5-16-201611' E A W U_ LL LL Ow Y U�^) Z VJ0� W~ a Z 0 wY � 0 M O W � M 00 W N O U U) w O Z J O Z O U Z Cw G W U) 06 Z O U) O w 0 Z J 0 J = U LL1 J 2 Q LU 00 Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE N/A REVISIONS: 05-16-2016 SHEET NO. C6 Of 10 JOB NO. 34150050 1 1 2 1 3 1 4 1 5 1 6 1 7 8 1 9 1 10 1 11 1 12 1 13 1 14 15 1 16 1 17 1 18 19 1 20 1 21 TEMPORARY DIVERSION DIKE GRAVEL AND WIRE MESH CONSTRUCTION OF A SILT FENCE STDN� DROP INLET SEDIMENT (WITHOUT WIRE SUPPORT) STONE CONSTRUCTION ENT ANCE '�' MI" cONsrt�ucrloN ACCESS 3" SM-2A ASPHALT TOP Al ASSOCIATES INC EXCAVATE A 4"X 4" TRENCH COURSE EXIST 0 FILTER 1. SET THE STAKES. 2. UPSLOPE ALONG THE LINE OF I 2% EXISTING 0 STAKES. �o MIN. EXISTING ��' PAVEMENT Compacted Soil 6'MAx. A I s PAVEMENTw� . b d 3' =� J 5" h1 N, 2",y AGGFtEAI N.s,SL 18' min. mill + I i I + FILTER CLOTH 6" MIN. A MOUNTABLE BERM f i (OPTIONAL) ll --Flow —� � /' _ I I � - �! /� PROFILE REFLECTING TOMORROW IIII SIDE ELEVATION 1s" MIN. � � � www.balzer.cc iiiii 1113111111 Will I Wilill I Willi I milli I Will I milli 1113111111 GRAVEL (12"MIN. DEPTH) / �i�� / �/ II EXISTING GROUND STONE h 4.5' min. Flow / / t 70' MIN. C014STRUCTION ?4' MIN, N I I RUNOFF WATER /// /// A N WITH SEDIMENT ACCESS ASPHALT RAVE, Staunton I,, I,, wASHI�AGa New River Valle IIN III B WASHRACK 10' MIN, y 4" (OPTI❑NAL) Roanoke EXISTING 3 4 i n 2% 2g—PA'VEMENT-� Richmond . STAPLE FILTER MATERIAL . BACKFILL AND COMPACT 6 e 10' IN, -- A2' MIN.* IIII TO STAKES AND EXTEND THE EXCAVATED SOIL. IS, MIN EXI� TIN5' C� 12% Harrisonburg T PAVEMENT r. IT INTO THE TRENCH. rRL d QL r RESIDENTIAL LAND DEVELOPMENT ENGINEERING III- _ SITE DEVELOPMENT ENGINEERING SOURCE: VA. DSWC PLATE 3.09 1 II I ° 7- * P1?7IT dl DRAINRGE a A' i VDDT nl `� POSITIVE DRAINAGE 10' MIN, -PUS- EXTEND FULL WIDTH A - TO SEDIMENT LAND USE PLANNING & ZONING M SEDIMENT FILTERED WIRE MESH COURSE AGGREGATE B TO SEDIMENT OPERATIONOF S AND EGRESS } TRAPPING DEVICE M LANDSCAPE ARCHITECTURE TRAPPING DEVICE _ LAND SURVEYING 5 WATER J I II /_ — MUST EXTEND FULL WIDTH /� II III OF INGRESS AND EGRESS PLAN ARCHITECTURE v l v OPERATION PLAN VIEW STRUCTURAL ENGINEERING TEMPORA R Y FILL - I I- TRANSPORTATION SOIL SCIENCE FLOW yz' MIN. 12' MIN. POSITIVE f]RAINAGL ENVIRONMENTAL &SOIL SCIENCE DIVERSIONIII =III I 3' MIN 2 TRAPPING DEVICE SPECIFIC WETLAND DELINEATIONS & STREAM EVALUATIONS SPECIFIC APPLICATION SHEET FLOW INSTALLATION -111 ,111-I1 _ 3" MIN. FILL SLOPE (PERSPECTIVE VIEW) FILTER CLOTH SECTdON A —A FILTER CLO-1I Balzer and Associates, Inc. L EARTHEN RIDGE THIS METHOD OF INLET PROTECTION IS APPLICABLE FLOW SECTION A—�+ L WHERE HEAVY CONCENTRATED FLOWS ARE EXPECTED, A VMAX. A 6' 7" 1561 Commerce Road 9" BUT NOT WHERE PONDING AROUND THE STRUCTURE B A 1171111r1u1i11 vatei tap tat 1 u1c11 i1111st be installed with a lidlaliiznun 1 inch taallc=taclti Suite 401 — — — — MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE J d J ;�lultnfrf �•rlls•e sulal3h'ui a wash Iti�<e �,'w7tli a diameter of 1. � uiclies for adequate III�� TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. ciln taut llre�srue _%V, di water Inuit be carried aGaal- from the ent ance to an Verona, VA 24482 approved settlnig area to remove secliiuent All sednnerit shall be prevuited froin �2� III I I elrtelilrr� stnnn di-aurs, ditches or waterco se . 540-248-3220 * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE I FAX 540-248-3221 AGGREGATE. POINTS A SHOULD BE HIGHER THAN POINT B. REINFORCED CONCRETE DRAIN SPACE PAVED WASH RACK K DRAINAGEWAY INSTALLATION SECTION P— P Na SCALE K (FRONT ELEVATION) iT H OF SOURCE: VA. DSWC PLATE 3.10-SOURCE: VA. DSWC PLATE. 3.07- OURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control,VA. DSWC PLATE, 3,05-2 SOURCE: ADAPTED from 1983 Maryland Standards for Soil erosion and Sediment Control, and Va. DSWC Plate 3.02-1 yr herwood and Wyant �s TEMP ORAR Y SEDIMENT TRAP DIVERSIONS w. Kent O'Donohue, Jr.a TOE REQUIREMENTS FOR * TEMPORARY RIGHT—OF—WAY Lio. No. 0406001683 BANK STABILIZATION 1' VARIABLE DIVERSIONS �� 05-1 6-2016 w \ " J ORIGINAL VARIABLE 10% SETTLEMENT I J ^�� GROUND �� 0.3' FREE BOARD \�J. v ELEV. , t t 1 COARSEl AGGREGATE 18" MIN' P g FILTER CLOTH UNDERLINER (PREFERRED) , °. _ , , , E A 67 CU. YD./ACRE VARIABLE DEMON IMM DFEPM KEY IN T 67 CU. YD./ACRE FILTER CLOTH 4' MAX. ORIGINAL 6"-9" (EXCAVATED) FlLTER CLOTH GROUND TYPICAL PARABOLIC DIVERSION I EACH LIFT OF THE FILL IS COMPACTED, BUT THE OUTER FACE ELEV. OF THE SLOPE IS ALLOWED TO REMAIN LOOSE SO THAT THE T MINIMUM ROCKS, CLODS, ETC. REACH THE NATURAL ANGLE OF REPOSE. ** 6' �j �j %� % MIN. *SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP FILLSLOPE T R �i A T �e 1 1' T 10% SETTLEMENT X, CROSS SECTION OF OUTLET 0.3' FREE BOARD� I ' � •' � ' i SOURCE: VA. DSWC PLATE. 3.29- DEMGN TYPICAL GRAVEL STRUCTURE FILTER CLOTH CLASS I RIPRAP _ LENGTH (IN FEET) _ H _ (IIN AC.�INAGE AREAmilli _ GRANULAR FILTER DIVERSION H DIKE COMPACTED SOIL TYPICAL TRAPEZOIDAL DIVERSION Uj T � � � � 10% SETTLEMENT � � l 1 '18" MIN • U G � , \ - �� -�� 0.3' FREE BOARD G � Q /\ — . ���_ �_ ' t MIN. I ' I // -�_ �- t"', F4olf DBPTH IMME U_ z % COARSE AGGREGATE DOZER TREADS CREATE / =/�!1� / O ILL I-- GROOVES PERPENDICULAR �� EXCAVATED %/ / % �� �Ii /FILTER CLOTH �� 6' MINIMUM Y U TO THE SLOPE. / � U) Z W lY ,.:. V J %' TYPICAL VEE—SHAPED DIVERSION � AGGREGATE ': ^ *•COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 It - COARSE Q z MIN. THICKNESS = 6" TYPICAL EARTHEN STRUCTURE LLB 0- TRACKING OUTLET (PERSPECTIVE VIEW) z 0 D F F —� J J 0 SOURCE: MICHIGAN SOIL EROSION AND SEDIMENTATION GUIDE PLATE. 3.29-4SOURCE: Adapted from VDOT Drainage Manual PLATE. 3.19-1 SOURCE: VA. DSWC PLATE. 3.13-2Source: Va. DSWC Plate 3.12-1Source: Va. SWCC Plate 3.11-1 Y _ (� �0 Uj TYPICAL TREATMENT — > TYPICAL ORIENTATION OF TABLE 3.35-A S LNG m co = Q (SOIL STABILIZATION BLANKET) TREATMENT — I ORGANIC MULCH MATERIALS AND APPLICATION RATES � co U � w INSTALLATION CRITERIA (SOIL STABILIZATION BLANKET) „v� LAY SOD IN STAGGERED w w m DRIP LINE ��77 ,� E 1\ClTE. V STRIPS TIGHTLY AGAINST HE E ANCHOR SLOT SHALLSLOPE "1 MULCHES: NOTES: O PROTECTIVE DEVICE AA V EACH OTHER. DO NOT nrnwvvu LEAVE SPACES AND DO NOT 0 NOTES Per Acre Per i000 sq. ft. ivr ovv vuu AV, v OVERLAP. A SHARPENED' MASONS TROWEL IS A APPROXIMATELY 200 STAPLES REQUIRED HANDY TOOL FOR TUCKING n PER 100 SQ. YDS. OF MATERIAL ROLL. ON SHALLOW SLOPES, STRIPS OF \V' v '1w DOWN THE ENDS AND . ANCHOR SLOTS, JUNCTION SLOTS & NETTING PROTECTIVE COVERINGS Straw or Ha 1 i - 2 tolls 70 - 90 lbs. Free from weeds and coarse AV, " vr�vx vii TRIMMING PIECES. V MAXIMUM LIMITS A CHECK SLOTS TO BE BURIED 6" TO 12". MAY BE APPLIED ACROSS CLEARING AND GRADING n THE SLOPE. (Minimum matter, Must be anchored.mmvnawxwwxxwa mono PROPOSED GRADING 12" MAX. 4:1 OR FLATTER tons for Spread with mulch blower - - •0 6" MAX. STEEPER THAN 4:1 winter cover or hand. CAUSED BY THE AUTO- - - I` BUTTING ANGLED ENDS JUNCTION SLOT I~ Y INCORRECT MATICEDGE AND END JOINTS BE SOD CUTTER MUST * TO BE SNUGLY ABUTTED I I I 11 I I I I BE MATCHED CORRECTLY. D CHECK SLOT BERM Fiber Mulch Minimum 35 lbs. Do not use as mulch for MIN. 5' �" (JUTE MESH WILL HAVE I CORRECT D i� WHERE DRtPLINE TERMINAL FOLD STAPLED LAP JOINT IN I I WHERE THERE IS I BERM AT THE TOP N THE SLOPE, 150D lbs. winter cover Or during hot, IS LESS THAN LIEU OF EDGE JOINT) I BRING THE MATERIAL OVER THE BERM AND ANCHOR IT * DRAWN BY DKO 5' �� I I I I I BEHIND THE BERM. dry periods. Apply as LAP JOINT 2" MIN. I I r ` TAMP FIRMLY (JUTE MESH ONLY) I I I 'Slurry' DESIGNED BY DKO CONSTRUCTION OPERATIONS RELATIVE ANCHOR 5' MAX. 4:1 OR FLATTER I STEEP Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" TO THE LOCATION OF PROTECTED TREES 3' MAX. STEEPER THAN 4:1 I , , SLOPE ERB 2" lengths. Air-dried. Do not CHECKED BY Source: Public Facilities Manual, Vol. III, Fairfax Co., Va., 1976 Plate 3.38-1 T 6" TO 12" T I I use in fine turf areas. Apply } ON STEEP SLOPES, APPLY DATE 03-07-2016 I I I I I I 1 1 PROTECTIVE COVERING PARALLEL with mulch blower or by I TO THE DIRECTION OF FLOW I(' l I(( 1 R'ti(t Mali, Illlu alii is 'iiPll I I AND ANCHOR SECURELY. hand_ ��<<�� thou lu aalli ac uuu I PPPPtrrn SCALE N/A -f C * IIIII I CHECK SLOT (((((((1((( I I I I Wood Chips 4 - 6 tans 185 - 275 lbs. Free of coarse matter. Air- a ul i nlllllalallulllll illluual , a(((ill`luiica(((M" s allllmiacalllllllll p liluaccc(i(((ia,licuii(((uucaciu, ((((((Inl((' fUi (I((((uI(ul ,Pnal. � Il�aanlllllluuulllllllu T 7 u(ulca(ull(((a(a(II(Illu ,. ((c(1((I((I(t(( I , uulllIli,,..;;;r uuaiulllllluulllllllill I I dried. Treat nth. 12 lbs..41,I,1„IrIIU(((f(((IIIII((((fllu".,((((((I,(,(,((,(,(,(,(,I((((((I(1 ,l. ((((((t(((((( .,,•""""""r iuurriiuuiullrrrtlllilllltu i rla L(I(,(,1,1,II11 (ri,� 2" TAMP CHECK SLOT 1 TO 2 I I I 1 I 1 I I 1 ROLL SOD IMMEDIATELY WATER TO A DEPTH MOW WHEN THE SOD IS REVISIONS: FIRMLY �_ nitrogen per ton. Do not g p TO ACHIEVE FIRM OF 4" AS NEEDED. ESTABLISHED - IN VAR. VAR. I CONTACT WITH THE SOIL. WATER WELL AS SOON 2-3 WEEKS. SET THE 05-1 6-2016 Apply AS THE SOD IS LAID. MOWER HIGH (2"-3"). PLAN VIEW use in fine turf areas. A 1 T 1 r' s" ro 8" MIN. with mulch blower, chip BRING MATERIAL DOWN TO A LEVEL AREA BEFORE r STAPLING DIAGRAM TERMINATING THE INSTALLATION. TURN THE END ' UNDER 4" AND STAPLE AT 12' INTERVALS. handler, or by hand. APPEARANCE OF GOOD SOD *CHECK SLOTS AT MIN. ,i''.•. .,_'..,r V 12" STAPLE FORMED FROM NO.11 STEEL WIRE. 50' C-C INTERVALS; 8" STAPLE MIN. LENGTH FOR SANDY SOIL. NOT REQ.'D WITH ALL Bark Chips 50 - 70 cu. 1-2 cu. yds. Free of COaTse matter. Air- B 6" STAPLE MIN. LENGTH FOR OTHER SOIL. "COMBINATION"BLANKETS or yds. y dried. Do not use in fine B JUNCTION SLOT DITCH I FLOW SHOOTS OR GRASS BLADES. TAMP Shredded turf areas. Apply with GRASS SHOULD BE GREEN AND TERMINAL FOLD FIRMLY HEALTHY, MOWED AT A 2"-3" 2" 6" TO 12" IN DITCHES, APPLY PROTECTIVE COVERING Bark mulch blower, chi handler, CUTTING HEIGHT. LAMP FIRMLY PARALLEL TO THE DIRECTION OF FLOW. l a I ' 12" 4" 2" USE CHECK SLOTS AS REQUIRED. AVOID or 1) band. JOINING MATERIAL IN THE CENTER OF y THE DITCH IF AT ALL POSSIBLE. T6 THATCH - GRASS CLIPPINGS AND - DEAD LEAVES, UP TO 1/2" THICK. When fiber mulch is the only available mulch during periods when straw MWT SHOULD°BE 1/z013/4" THICK, WITH SHEET NO. should be used, apply at a minimum rate of 2000 lbs./ac. or 45 Ibs.j1000 sq. ft. DENSE ROOT MAT FOR STRENGTH. 5Af ffQ A SOURCE: VDOT ROAD AND BRIDGE STANDARDS PLATE: 3.36-2 SOURCE: ADAPTED FROM LUDLOW PRODUCTS BROCHURE PLATE: 3.36-1 SOURCE: VA. DSWC PLATE: 3.33-1 0 1 1 9 1 1 4 1 .9 1F 7 1 8 1 1n 1 11 1 19 1 114 1 1. 1 1F 1 17 1 18 1 1A gn 1 91 1 JOB NO. 34150050 n IN IM IL IJ IH IG IF 0 IC I_1 MAINTENANCE SCHEDULE FOR BIORETENTION Description Method Frequency Time of Year SOIL Inspect and repair erosion Visually Monthly monthly ORGANIC LAYER Remulch any void areas By hand Whenever Whenever needed needed Remove previous mulch By hand Once every two spring before applying new layer to three years Any additional mulch By hand Once a year spring added (optional) PLANTS See planting Removal and replacement specifications of the Mar. 15 to of all dead and diseased Virginia Stormwater Twice a year Apr. 30 and vegetation considered Management Oct. 1 to Nov. beyond treatment Handbook, Section 30 3.11 Varies, Treat all diseased trees and depends on shrubs Mechanical or by hand N/A insect or disease infestation Watering of plant material shall take place at the end Immediately of each day for fourteen By hand after N/A consecutive days after completion of planting has been project completed Replace stakes after one Only remove By hand Once a year stakes in year spring Replace any deficient By hand N/A Whenever stakes or wires needed Check for accumulated By hand Monthly monthly sediments 1. Inspect bi-annually and after each storm event the contributing drainage areas, Bioretention facility, inlets, outlets, underdrains, overflows and cleanouts for debris, sediment, proper drainage and damages. Clean and dispose of all debris, trash and sediment properly. Should structural damages be encountered contact design engineer for replacement information and notify the County of Augusta Engineer of the damages and proposed repair procedures. 2. The observation well shall be checked quarterly and after each large storm event. A log book shall be maintained showing the depth of water in the well during each inspection in order to determine the rate at which the facility dewaters after runoff producing storm events. Once the performance characteristics of the structure have been verified, the monitoring schedule can be reduced to an annual basis, unless the performance data suggests that a more frequent schedule is required. At the end of the first year the Landowner shall provide a copy of the log book and the revised monitoring schedule to the county engineering department to be reviewed by the Erosion and Sediment control inspector. The inspector will approve the revised monitoring schedule or require further inspections that shall be carried out by the Landowner. 3. Inspect plant material bi-annually. Address any problems found due to disease or insect infestations. Diseased plants must be treated by a qualified professional. Replace any dead plant material and prune as necessary. Consult a landscape architect or horticulturist for specific pruning measures. All replacement plants shall meet original design specifications. New plants shall be watered everyday for the first 14 days after planting. 4. Conduct organic layer and soil tests twice a year to maintain proper pH. An application of alkaline, such as limestone, shall be applied as needed per test results. 5. The soil mix shall be tested annually to check for the presence of toxins and heavy metals. If levels are high and the plant biologic functions are impaired (dwarfed growth and mortality) the contaminated soil and any dead plants shall be removed and replaced. All removed material shall be disposed of properly. In some cases, the removal and disposal of the entire soil base as well as the plant material may be required. Replacement soil mix and plants shall meet original design specifications. 6. Inspect mulch layer for voids and to ensure specified thickness. Replacement of mulch layer is required every two to three years. Mulch shall be replaced in spring. The previous layer shall be removed first. 7. When sand or other street abrasives are used on areas draining to bioretention basin during snow and icing conditions the pavement shall be power/vacuum swept as soon as freezing weather abates to prevent damage to the basins. 8. Inspect bi-annually all inlets structures, manholes, storm pipes, cleanouts and roof drains for proper drainage and structural integrity. Should damages be encountered contact design engineer for replacement information and notify County Engineering department of damages and repair procedures. 9. Inspect bi-annually all inlets structures, manholes, storm pipes, cleanouts and roof drains for debris and sediment. Clean and dispose of all debris, trash and sediment properly. BIORETENTION MEDIA REQUIREMENTS GENERAL FILTER MEDIA COMPOSITION (SPECIFICATION NO. 9, SECTION 6.6): THE RECOMMENDED BIORETENTION SOIL MIXTURE IS GENERALLY CLASSIFIED AS LOAMY SAND ON THE USDA TEXTURE TRIANGLE, WITH THE FOLLOWING COMPOSITION: •85% TO 88% SAND; • 8% TO 12% SOIL FINES; AND • 3% TO 5% ORGANIC MATTER IT MAY BE ADVISABLE TO START WITH AN OPEN —GRADED COARSE SAND MATERIAL AND PROPORTIONATELY MIX IN TOPSOIL THAT WILL LIKELY CONTAIN ANYWHERE FROM 30% TO 50% SOIL FINES (SANDY LOAM, LOAMY SAND) TO ACHIEVE THE DESIRED RATION OF SAND AND FINES. AN ADDITIONAL 3% TO 5% ORGANIC MATTER CAN THEN BE ADDED. (THE EXACT COMPOSITION OF ORGANIC MATTER AND TOPSOIL MATERIAL WILL VARY, MAKING PARTICLE SIZE DISTRIBUTION AND RECIPE FOR THE TOTAL SOIL MEDIA MIXTURE DIFFICULT TO DEFINE IN ADVANCE OF EVALUATING THE AVAILABLE MATERIAL.) FILTER MEDIA TESTING • P—INDEX RANGE OF 10-30 OR BETWEEN 7 AND 21 MG/KG • CECs EXCEEDING 10 • MEDIA MUST BE PROCURED FROM APPROVED FILTER MEDIA VENDOR. 1 n vD ri C\/ATinKI /rl BIORETENTION DETAIL N.T.S. 11310-RETENTION SCHEDULE Required Bottom BMP High Top of Top of Low Flow Drainage Impervious Depth of Stone Under 1-YR 10-Yr Weir Media of Stone Surface Flow Berm Berm Weir Area Area Media* Depth** Drain Inv. Elev. Elev. Width Area Elev. Elevation Weir Inv. Width Elevation Elevation KEY ACS ACS SF A B Cr D E F G H I J K BMP #1 0.77 0.55 901 36" 22" 699.17 700.17 704.00 705.00 705.01 705.48 6' 706.00 704.25 4' * Including 3" Top Mulch Layer or SOD Layer ** #57 Stone including 4" #8 Choker Layer 2' @ 5H:1V SHEET FLOW, 2' MAX. SLOPE sy: Fk reR PAVEMENT SECTION 3" DROPS TO & 4'1'Xss /P D . Er OP 1 ° �� MIRAFI 140N �- ENTIONE CLEAN WASHED I #57 STONE 1 GRAVEL DIAPHRAGM N.T.S. r"i 0" � .li, F 4" 6" 6" F GROUND LEVEL CLASS A3 CONCRETE W/ 6X6, W2.9XW2.9 WWF OR FIBER REINFORCEMENT LOW FLOW CONC. WEIR DETAIL N.T.S. 1 g ^ GROUND LEVEL I � � J ♦ 00 40 �♦ FLOW 6" i �� �/ 00 "� 000 00 i i i %%� ���� CLASS A3 CONCRETE W/ 6X6, W2.9XW2.9 Y \ �� WWF OR FIBER REINFORCEMENT I I I I � I HIGH FLOW CONC. WEIR DETAIL N.T.S. NI LI .14 JI HI FI EI 0 REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 off OF G1 r, 1 � D. Kent O'Donohue, Jr.a e Lic. No. 0406001683 kO5-1 6-201611' E A w U_ LL LL 0, Y �^U)EL z V J O� W~ a Za 0 U) �Y �0 O M co co W N 0 ry U U) J LJJ 06 J_ LL 0 0— U) i� F— CD U_ IY lY I— Z J 0 J M U W W J 2 � W 00 Q DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE REVISIONS: 05-16-2016 SHEET NO. Aq (:ZWr)\All\I C8 of 10 JOB NO. 34150050 Wi' Mje 0 HANDICAP PARKING SIGN WITH INTERNATIONAL SYMBOL OF ACCESS ON BLUE BACKGROUND. CIX9 PROVIDE THEFT PROOF BOLTS, WASHERS & NUTS. VAN ACCESSIBLE -a— SIGN TO BE OMITTED FOR N SPACES THAT ARE NOT PENALTY VAN ACCESSIBLE $100-FINETOW-AWOW-AW TOW -AWAY ZONE li•I■ a■ 1:1■ STEEL TUBE PIPE o CONDITION AT CONC WALK CONDITION AT PLANTER AREA 1' DIA CONC FOOTING HANDICAP SIGNPOST DETAIL NO SCALE CAA 0 C7A no CAA 1 0 rA AGGREGATE BASE COURSE-21A COMPACTED SUBGRADE SOIL — CBR= 7 1 I -NW 1-1/2" 1 /2" PREFORMED EXPANSION 3" JOINT FILLER WHERE ADJACENT TO BUILDING 8„ NOTTH•IS STANDARD -DUTY PAVEMENT SECTION DESIGN IS BASED UPON A TYPICAL ENGINEER PRIOR TOSTANDARD-DUTY USEESTABLISHMEAND SHALLNE OF FI NIAD PAVEMENT SUBGRADE. PAVING DETAIL EXISTING PAVEMENT +2"— - BENCHED PAVEMENT JOINT N.T.S. PROPOSED PAVEMENT (I A,.,/�I IT AAIrA AWAY COURSE 61 PAVEMENT JOINT DETAIL N.T.S. 5' SIDEWALKS MAXIMUM 2% PAVEMENT SLOPE IN ANY DIRECTION WITHIN AN ACCESSIBLE PARKING SPACE OR AISLE ACCESSIBLE AISLE AND CURB RAMP DETAILS NOT TO SCALE H r�■ 0■ ME i ■ PROPOSED SURFACE COURSE PROPOSED BASE COURSE PROPOSED AGGREGATE SUB BASE 95% COMPACTED SUB —GRADE CLASS I AIR ENTRAINED CONC 4" SO on NOTE: STRUCTURAL BACKFILL FINISH — TROWELED EDGES BROOM FINISH (WHERE FILL IS NEEDED) SCORING EVERY 6' ' EXPANSION JOINTS EVERY 30' MIN. SIDEWALK DETAIL N.T.S. SIDEWALK CROSS SLOPE 1.8% MAX .. 4 _ 'a, 4 n a ° e .. _.e. ° a PARKING LOT . .4 6 MATCH SLOPE ON PLAN 00 Cp IIII=IIII= =IIII=III =IIII° o IIII IIII _ 0 8 661111 ==IIII-MATCH IIII=IIII IIII-—IIII III I SIDEWALK MATCH DETAIL PAVEMENT DETAIL MONOLITHIC SIDEWALK DETAIL N.T.S. CLASS A3 AIR ENTRAIN CONC. W/ 6x6 WELDE1 WIRE REINF. 6" STONE AGGREGATE BASE HEAVY DUTY CONCRETE DETAIL N.T.S. SPHALT PAVEMENT TOOLED EDGE (1) #4 CONT. 6" THICK CONCRETE SLAB' W/6X6 eWWF SLOPE PER PLAN �a • • d . a��L J�-- d 1/2" RAID 8" THICK #21A STONE DUMPSTER APRON DETAIL N.T.S. I � I (RADIUS TO BE AS I 184 p (',, 1 XXSTREET APPROACH SAME SURFACING GENERAL NOTES SHOWN ON PLANS) FA + l AS MAINLINE ROADWAY (SEE NOTE 3) (RADIUS TO BE AS 1. WHEN USED IN CONJUNCTION WITH STANDARD CG-3 OR CC-7, THE CURB FACE ON THIS STANDARD IS TO — — — SHOWN ON PLANS) BE ADJUSTED TO MATCH THE MOUNTABLE CURB CiG-2 OR GG-6 — — — — CONFIGURATION. 2. SEE STANDARD CO-12 FOR CURB RAMP DESIGN TO BE — — — — '8 SIDEWALK USED WITH THIS STANDARD. ISIEEALK— w N ) w �OPTIONAL FLOW LINE UNPAVED SPACE 3. MAINLINE PAVEMENT SHALL BE CONSTRUCTED TO THE ' yr ! � R/W LINE (EXCEPT ANY SUBGRADE STABILIZATION — --Z� ; ---- REQUIRED FOR MAINLINE PAVEMENT WHICH CAN BE EXPANSION EXPANSION OMITTED IN THE ENTRANCE.) rL JOINT 4• RADIAL CURB OR COMBINATION CURB AND GUTTER — SHALL NOT BE CONSTRUCTED BEYOND THE RJW LINE NOTE: WIDTH "B" 2'-0" OR AS <:0 MAINLINE ROADWAY EXCEPT FOR REPLACEMENT PURPOSES. SHOWN ON TYPICAL SECTION. A PLAN VIEW ENTRANCE NOTES 5. WHEN THE ENTRANCE RADII CANNOT ACCOMMODATE THE TURNING REQUIREMENTS OF ANTICIPATED HEAVY TRUCK MAINLINE ROADWAY SLOPE TRAFFIC, THE DEPTH FOR SIDEWALK & CURB RAMPS 10' PARABOLIC CURVE (ENTRANCE ONLY) WITHIN THE LIMITS OF THE RADII SHOULD BE INCREASED TO 7". (SEE CG-13) EDGE OF PAVEMENT OR OPTIONAL FLOW LINE 8 X MAX. SLOPE CHANGE ® D _ ® 6. PLANS ARE TO INDICATE WHEN CONSTRUCTION OF A FLOW (SEE LINE IS REQUIRED TO PROVIDE POSITIVE DRAINAGE ACROSS MAINLINE ROADWAY — — — — — — — -- — — — — NOTE 7) THE ENTRANCE. 8X MAX. ® D 7. THE DESIRABLE AND MAXIMUM ENTRANCE GRADE CHANGES SLOPE CHANGE -- "D" ARE LISTED IN THE ALLOWABLE ENTRANCE GRADE D TABLE. THESE VALUES ARE NOT APPLICABLE TO STREET CONNECTIONS. 5' MIN MINIMUM FOR COMMERCIAL ENTRANCE INTERSECTION NOTES 8, WHEN CC-11 IS USED FOR STREET CONNECTIONS, THE M CONSTRUCT GRADE CHANGES WITH A PARABOLIC CURVE. CONNECTION MUST BE DE51GNED IN ACCORDANCE WITH AASHTO POLICY AND THE APPLICABLE REQUIREMENTS OF THE VDOT ROAD DESIGN MANUAL SECTION A - A SIGHT DISTANCE AND K VALUE REQUIREMENTSG STOPPING 9. OPTIONAL FLOWLINE MAY REQUIRE WARPING OF A 4 PORTION OF GUTTER TO PROVIDE POSITIVE DRAINAGE ACROSS THE INTERSECTION. 2' B ALLOWABLE ENTRANCE GRADE CHANGES CLASS A3 CONCRETE ' SECTION C-C ENTRANCE VOLUME GRADE CHANGE Q" DESIRABLE MAXIMUM HIGH MORE THAN 1500 VPD 0 ,T 3 % MEDIUM 500-1500 VPD s 3 x 5 % LOW LESS THAN 500 VPD s 5 X 8 % NOTE: ALLOWABLE ENTRANCE GRADE TABLE IS NOT APPLICABLE TO STREET CONNECTIONS SPECIFICATIONXVMT REFERENCE METHOD OF TREATMENT ROAD AND BRIDGE STANDARDS 502 (CONNECTION FOR STREET INTERSECTIONS AND COMMERCIAL ENTRANCES) REVISION DATE SHEET 1 OF 1 VIRGINIA DEPARTMENT OF TRANSPORTATION 203.04 CG-7 THIS AREA MAY BE CONCRETE AT THE OPTION OF THE CONTRACTOR ROAD AND BRIDGE STN+IDARDS SHEET 1 OF 1 REVISION DATE 201.04 FINISH GRADE NOTE: PROVIDE EXPANSION JOINTS 20' 0" O.C. (MAX.) ROUGH GRADE 4" � CLASS A3 TOP OF � CONCRETE PAVEMENT V///// ro N I2 I I> oD' a �' ''•a e:Q:.,o:e ,,�;:. a` •o�e —III-1 °•.0;: II— p � �'°'.O'O�;!:°•P'O�O•�_>n:�O.O•:n. e'O C` •Oe '•p:�. .�°.� 4:° •O °.° :Q � `ICJ.° °O:u :•:Oa • •O.q:. ''4.�: :_o'er:.:° ;.4 ..'6.p:.n b,b :. �. e: a:o:.� _'.. Cam; d•°a0 .o .s�b':p':,e 6oa'•.o o$O�ro >Op•. e.' �O", o, °e'vp �e �,._•.o o �'. �.a .. o.:'. -.A 6'�e ~► M 24" THE BOTTOM OF THE CURB & GUTTER MAY BE CONSTRUCTED PARALLEL TO THE SLOPE OF THE SUBSURFACE COURSES PROVIDED A MINIMUM DEPTH OF 7" IS MAINTAINED CG-6 (WET) DETAIL N.T.S. ■a FINISH GRADE ROUGH GRADE 4" 1I TOP OF PAVEMENT I —III —III —III —III —III —III ' p D —I I I —I I I —I I I —I 11-11 I-1 I I —I I i III „I I I-1 I I-1 I I 111-1 11 p ° ae, N CLASS A3 ° 4:.: a ao : +9b o.o 00'• :Pb'•fl :n �'P.. ♦: sP?,O •e yDQ':pe�' CONCRETE .o,o;: .`:d:o.:'.:Q ,•. ,.Q'. <':o: 6" CG-2 DETAIL N.T.S. I NOTES., 1. THIS ITEM MAY BE PRECAST OR CAST IN PLAICE 2. CONCRETE TO BE CLASS A3 IF CAST IN PLACE, 4000 PSI IF PRECAST. 3. COMBINATION CURB & GUTTER HAVING A RADIUS OF 300 FEET OR LESS (ALONG FACE OF CURB)SHALL BE PAID FOR AS RADIAL COMBINATION CURB & GUTTER. 4. FOR USE WITH STABILIZED OPEN -GRADED DRAINAGE LAYER, THE BOTTOM OF THE CURB AM GUTTER SHALL BE CONSTRUCTED PARALLEL TO THE SLOPE OF SUBBASE COURSES AND TO THE DEPTH OF THE PAVEMENT. 6. ALLOWABLE CRITERIA FOR THE USE OF CG°7 IS BASED ON ROADWAY CLASSIFICATION AND DESIGN SPEED AS SHOWN IN APPENDIX A OF THE VDOT ROAD DESIGN MANUAL IN THE SECTION ON URBAN GS STANDARDS. 6. WHEN THIS STANDARD 15 TO BE TIED INTO EXISTING BARRIER CURB, THE TRANSITION IS TO BE MADE WITHIN 10' OR THE CHANGE IN STANDARDS CAN BE MADE AT REGULAR OPENINGS. 7. WHEN COMBINATION MOUNTABLE CURB AND GUTTER 15 USED, THE STANDARD ENTRANCE GUTTERS OR STANDARD CONNECTION FOR STREET INTERSECTIONS ARE TO HAVE THE MOUNTABLE CURB CONFIGURATION INCORPORATED. r% THE BOTTOM OF THE CURB AN O GUTTER MAY BE CONSTRUCTED PARALLEL TO THE SLOPE OF SUBBASE COURSES PROVIDED A MIN. DEPTH OF T' IS MAINTAINED COMBINATION 4" CURB AND GUTTER VIRGINiA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE 105 502 ■I© ■© ■m ■0 ■ N REFLECTING TOMORROW www.balzer.cc Staunton New River Valley Roanoke Richmond Harrisonburg RESIDENTIAL LAND DEVELOPMENT ENGINEERING SITE DEVELOPMENT ENGINEERING LAND USE PLANNING & ZONING LANDSCAPE ARCHITECTURE LAND SURVEYING ARCHITECTURE STRUCTURAL ENGINEERING TRANSPORTATION ENGINEERING ENVIRONMENTAL & SOIL SCIENCE WETLAND DELINEATIONS & STREAM EVALUATIONS Balzer and Associates, Inc. 1561 Commerce Road Suite 401 Verona, VA 24482 540-248-3220 FAX 540-248-3221 (D.- ,�e OF Donoh "ueD,r j — 68000463 012651, w �, W U_ LL LL, OIL! Y U)�^ �^z v!� LUo_ ZQ 0 U) �Y � 0 M O W � M 00 W N O U U IY 0 Z J 0 J = U LU W J C LU 03 J a DRAWN BY DKO DESIGNED BY DKO CHECKED BY ERB DATE 03-07-2016 SCALE N/A REVISIONS: 05-16-2016 SHEET NO. JOB NO. 34150050