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HomeMy WebLinkAboutWPO202100006 Plan - E&S 2021-02-02@ 2020 - 30 LLC 15TITOWTOWT00 FOOTHILL FARM MAINTENANCE BUILDING SYMBOLS VIRGINIA EROSION AND SEDIMENT CONTROL PROGRAM (VESCP) PLAN AC ACRE EXISTING PROPOSED ADA AMERICANS WITH DISABILITIES ACT ----- _._.._.._.._..I VDOT STD. EC-2 DITCH LINING ARV AIR RELEASE VALVE ._ BF BASEMENTFLOOR BM BENCH MARK VDOT STD. EC-3 DITCH LINING BW BOTTOM OF WALL (AT GROUND LEVEL) -498— — —12— CFS CUBIC FEET PER SECOND CONTOUR LINE WITH ELEVATION CG-12 ADA ACCESSIBLE CURB RAMP (VDOT STANDARD) 12 STORM SEWER STRUCTURE IDENTIFIER CL CLASS CMP CORRUGATED METAL PIPE O SANITARY SEWER STRUCTURE IDENTIFIER CO SANITARY SEWER CLEANOUT CONC CONCRETE BENCHMARK, TEST PIT CY CUBIC YARDS DB/PG DEED BOOK/PAGE MANHOLE WITH FRAME AND COVER DEQ VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY DIP DUCTILE IRON PIPE + 65EX + 65 SPOT ELEVATION DOM DOMESTIC E&S EROSION AND SEDIMENT CONTROL q (� ADA PARKING SYMBOL EL, ELEV ELEVATION EP, EOP EDGE OF PAVEMENT @ WATER CROCK METER ESMT EASEMENT EW END WALL �ceFIRE HYDRANT EX EXISTING FF FIRST FLOOR FH FIRE HYDRANT 0 • WATER VALVE FM FORCE MAIN — WATERMAIN FPS FEET PER SECOND GSF GROSS SQUARE FEET '~ SANITARY SEWER MAIN GW GUY WIRE HDPE HIGH -DENSITY POLYETHYLENE PIPE m STORM SEWER HP HIGH POINT HT HEIGHT PROPERTY LINE/RIGHT-OF-WAY LINE INV INVERT IRF IRON ROD FOUND CENTER LINE IRS IRON ROD SET --- L LENGTH FENCE LINE LAT LATERAL LF LINEAR FEET EASEMENT LINE LP LOW POINT ---- LT LEFT MAX MAXIMUM MH MANHOLE MIN MINIMUM NSF NET SQUARE FEET NTS NOT TO SCALE OHE OVERHEAD ELECTRIC PC POINT OF CURVATURE PERF PERFORATED PL PROPERTY LINE PROP PROPOSED PSI POUNDS PER SQUARE INCH PT POINT OF TANGENCY PVC POINT OF VERTICAL CURVATURE PVC POLYVINYL CHLORIDE PIPE PVI POINT OF VERTICAL INTERSECTION PVT POINT OF VERTICAL TANGENCY R RADIUS R/W RIGHT-OF-WAY RCP REINFORCED CONCRETE PIPE RED REDUCER RPA RESOURCE PROTECTION AREA RT RIGHT RTE ROUTE SAN SANITARY SEWER SD SIGHT DISTANCE SDR STANDARD DIMENSION RATIO STA STATION SVC SERVICE SW SIDEWALK SWIM STORMWATER MANAGEMENT T TRANSFORMER TBR TO BE REMOVED TC TOP OF CURB TP TELEPHONE PEDESTAL TW TOP OF WALL UG UNDERGROUND UGE UNDERGROUND ELECTRIC UGT UNDERGROUND TELEPHONE/FIBER LINE UGU UNDERGROUND UTILITY VDOT VIRGINIA DEPARTMENT OF TRANSPORTATION VESCH VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK VSMP VIRGINIA STORMWATER MANAGEMENT PROGRAM WM WATER METER WTR WATER WV WATER VALVE WPO 2020- TMP 62-73B ALBEMARLE COUNTY, VIRGINIA RIVANNA MAGISTERIAL DISTRICT ALBEMARLE CITY OF COUNTY CHARLOTTESVILLE FOOTHILL FARM DRIVE RCO �RoGrQosr �Ro DARDENTOWE p�yQ J���o SITE PARK C, �O N /RO�r� SpRogo o� VICINITY MAP SCALE: 1 "=2000' OWNER: TOBIAS A DENGEL TRUST 1740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 ENGINEER: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 434-242-2866 ATTN: MICHAEL MYERS, PE, CFM RESPONSIBLE LAND DISTURBER DEREK TRIMINGHAM (CERT NO. 33125) LIMITS OF DISTURBANCE = 32.950 SF(0.76 AC. REVISIONS # DESCRIPTION DATE SHEET INDEX # SHEET TITLE 1 COVER SHEET 2 EXISTING CONDITIONS 3 EROSION AND SEDIMENT CONTROL PLAN 4 EROSION AND SEDIMENT CONTROL NARRATIVE AND DETAILS 5 GRADING PLAN 6 DRAINAGE DIVIDES 7 DITCH AND CULVERT CALCULATIONS PROPERTY INFORMATION: TAX MAP AND PARCEL: 62-73B OWNER: TOBIAS A DENGEL TRUST AND LYNN T DENGEL TRUST SITE AREA: 5 AC SOURCE OF TITLE: DB 5107 PG 651 TOPOGRAPHIC SURVEY ROGER RAY AND ASSOCIATES, NOVEMBER 4, 2020 BOUNDARY SURVEY PLAT OF RECORD DATUM: NAVD1988 CITY/STATE ALBEMARLE COUNTY, VIRGINIA ZONING: RA FLOODPLAIN NOTE: THE PROPERTY IS LOCATED IN ZONE X', AN AREA DETERMINED TO BE OUTSIDE THE 0.2%ANNUAL CHANCE FLOOD PLAIN AS SHOWN ON FEMA MAP NO. 51003CO295D, EFFECTIVE DATE FEBRUARY_4, 2005 Om SCALE ENGINEERING fowner : TOBIAS A DENGEL TRUST 740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC I871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com Q z r ^ V Of Z Q z z z J p U .. v J w 2 LJ_I Z w a Lu 01-1 cD CU z J m LI co Z F_ O L (.0 Lu QF_ C G LLI U 0 G Q Q o LL U) p J J Lu T U) 0 g Z 1 J IY 0 Lu 0 LL z z z sheet title: COVER SHEET scale: 1 "=20' date: 1 /26/2021 sheet # 1 OF 7 @ 2021 - 30 LLC KEY v v v v v STEEP SLOPES (PER ALBEMARLE COUNTY GIS) vvvv SOILS TYPE BOUNDARY 71C NRCS SOILS TYPE NOTES 1. NO DETERMINATION WAS MADE AS TO THE LOCATION OR EXISTENCE OF UNDERGROUND UTILITIES. CALL MISS UTILITY BEFORE ANY GROUND DISTURBING ACTIVITIES. 2. TAX MAP 62 PARCEL 73B IS SUBJECT TO THE FOLLOWING: A. EASEMENTS TO VIRGINIA ELECTRIC AND POWER COMPANY (D.B. 689-553 & D.B. 615-389). B. 30' R/W (D.B. 1088-693 PLAT). 3. NO TITLE REPORT FURNISHED. THIS PROPERTY SUBJECT TO ANY CONDITIONS, UTILITIES, EASEMENTS, AND/OR COVENANTS THAT MAY EXIST. REVISIONS # DESCRIPTION DATE \ \\ \\ \ JOAN W. MILLER 3g \ \ \ \ \ \ E7 TMP62-]1B] 190. ZONE RA 580— USE: RESIDENTIAL DB 3775 PG 573 2_— DB 607 PG 490 PLAT TB HP CHIMNEY 575 — \ \ \ ,�\.,�\� TORY FRAME �-i \ / �` \ \72`/�, __ _\_ _ ___ — / I \ \\ \ \ \\ Y\ \ \ STONE I \ \ \ \ \ �\ -- `` WALK - l � FRAME — _l= OECk \ \ / \ BUILDING �, �, " " PAT \ \ _ R —o 560\ \ \ \ \ \ \ \ \ \ 570 OV RO FOUND � S888002 J\ � PROJECTK1CA\VON V , - � 565 � / TOBIAS A DENGEL TRUST 8 LYNN T DENGEL TRUST — TMP62-71 wI-560 ZONE: RA USE: RURAL AREAS IDS 5107 PG 651 14�%\�\ --- —�— -- ---- 555 �\--- / — — — — — T.M.62-73B — / TOBIAS A. DENGEL TRUST & \ I \ / 540 r / LYNN T. DENGEL \ \ 1 1 I I I \ / / 1 D.B. 5158-751-A & 752 PLAT I I l I \ D.B.5107-651 I 1 LJ 1 I I I I 1 \ \ \ \ / / �J� / / — 5U�21/ '� D.B.5040-669 D.B. 1088-693 & 694 PLAT I 1 ) 1 \ •\ \& / / //^�// �� / S�eEa24 �° �1 V, D° D D D° ° D 830 #\� D DDDoD DDDoD DDDoD DDDoD DD STEEP SLOPES PER ALBEMARLE COUNTY GIS \ LL-7 �590i °DDD °DDD °DDD °DDD ° ° D ° DDD ° DDD ° D V, ° ° DD ° D D �, D °DDD °DDD °DDD °DDD ° D DD V,DD \ D ° D DDD DD DDD DoDDDDDDD D D D D D DD DoD00DDDDDDD. \ \ °DDDDDODD��DD D DDD DDD DDDDn°DD ZI �4>3e� 1y \ / �3>. BU P, E VEARE USN E / v���— \ \ \ \ \' /`( t-SPRING / \ F Off, SPRING �_ VEL T=30.18' CB=N51`35'28"W \ 0/ Hss, RO �TF3g. �yozz �69 9p I \ \\ I 33" \�\ METAL ULVERT \ I _L —520 \ \ / -520— / DD N86°39'36"W --------------- —BW BROWN I=33°17'50" \ y36 / i i TMP62-76A R=132.86' \ E 55 g4.10 — / / / ZONE: RA DENTIAL T-39.73' PRO �TM.np1 0.37' i UDS 8911SE IPG 6900 C8=N38°32'25'W � 45.22' ggi°i6'47"W � EXISTING CONDITIONS N jk 0 30 60 90 SCALE: 1 "=30' EMSCALE ENGINEERING owner: TOBIAS A DENGEL TRUST 1740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a O 0 W 0 U) 0 Z O I f W sheet title: Z nJ 0. W G LL J m cM ti EXISTING CONDITIONS scale: 1 "=30' date: 1 /26/2021 i i 0 z Z) 0 U w J Lu w m J Q sheet # 2OF7 @ 2021 - 30 LLC 1992 3.13 TEMPORARY SEDIMENT TRAP ORIGINAL GROUND ELEV. 67 CU. YD./ACRE 67 CU. YD./ACRE .• wix. (EXCAVATED) FILTER CLOTH GROUND GROUND ELEV. -SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CUSS I RIPRAP LENGTH (IN FEET) B X DRAINAGE AREA px AC.) /O DIKE N DINE COARSE AGGREGATE EXCAVATED AREA /FILTER CLOTHj/�\ / COARSE AGGREGATE SHALL BE VDOT /3, /357 OR /5 OUTLET (PERSPECTIVE VIEW) Source: Va. DSWC Plate 3.13-2 ST) TEMPORARY SEDIMENT TRAP VESCH STD. 3.13 WET DRY WET DRY BOTTOM CLEANOUT ST DA STORAGE STORAGE STORAGE STORAGE TRAP ELEV REQUIRED REQUIRED PROVIDED PROVIDED DIMENSIONS # (AC) (CF) (CF) (CF) (CF) 1 1.97 3564 3564 3984 3747 26 X 22 541.0 1992 3.08 SILT FENCE CULVERT INLET PROTECTION DISTANCE IS 6' MINIMUM IF FLOW IS TOWARD EMBANKMENT FLOW CIP) CULVERT INLET PROTECTION VESCH STD. 3.08 EROSION AND SEDIMENT CONTROL LEGEND STD# ABBREV. SYMBOL E&S PRACTICE 3.02 CE `� CONSTRUCTION ENTRANCE 3.05 SF -X—X- SILT FENCE 3.08 CIP CULVERT INLET PROTECTION 3.09 TEMPORARY DIVERSION DIKE 3.13 STD TEMPORARY SEDIMENT TRAP 3.18 OP OUTLET PROTECTION 3.31 TS TEMPORARY SEEDING 3.32 pg Ps PERMANENT SEEDING 3.35 MULCH 3.38 TP r TREE PROTECTION LIMITS OF DISTURBANCE \ \ DITCH 3 STONE \ 114-LF V-DITCH LINED WITH \ \ \ \ i 1 WALK I \ / �\ — — — _ VDOT STD. EC-2 @ 1.5% \ --- _ \--\ 565 - \ >` \ 1 y FRAME \ \ \ T \ \ _ \ Y l BUILDING \2 - \ -- _ - DITCH 2B - 68-LF DITC LINED WITH VDOT STD. EC-2 @ 1.5% \\ \ 69 _ m� 560 — \ \ qY — — _ \ \ \ \ \ 6867 66 65 _ \ \ 64 6 g0 — 59 60 61 i— = O 57 58 ` CIP \ \ /54 56 - — \ � \ASS �\ 57�. w � — \ \ ' 7,080 SF GRAVEL - oa�' l TRAVELWAY y rn ' �fi r 5 1 _ \ 22.2' o \ \ \ \ \ 1 15" HOPE CULVERT - ' TOBIAS A DENGEL TRUST & \ \ \ \ \ _ LYNN \32'X,48' MAINTENANCE E — ' — TMP 62-7DENGEL TRUST 1 PROVIDE WATER SOURCE TO CLEAN NSTRLtCTION— / J _ 58 _ BUILDING � _ $ ZONE: RA 57- USE: RURAL AREAS \ \ \ VEHICLES BEFORE LEAVING THE SITE. IRECT WASH / ' — _ 00) - — DB 5107 PG 651 \ \ \ \ \ \ \SSO WATER TOWARD SEDTPI�ENT TRAP ' OP \ \ 20.0' 12'WRAP-AROUND SHED ' \ \ 57 $ \ 0 _ Id 20.0' - 33T — - - 57� — 5�-- ' — \ \ \ \ \ LIMITS OF DISTURBANCE = 0.75 A // y N DITCH CLASS Al \ \ \ \ 1 \ DII H 1 TP 4 RIP -RAP DITCH \ \ \ \ \ \72-LF CLASS Al RIP -RAP / / \ 0 0 (18" THICK) @ 16% s DITCH (18" THICK) @ 1561. / . \ 577 — — 57If 56 /- \ WET STORAGE = 3.984 CF @ E� - 543.0 / Ifd _ C1 53 If52 \ \\ \ \ \ 1 \ 1 I DRY�TORAG = .747\@EL`=5\0 \ / /^ �T 51 DD - 48 47 46 — `42 4 . . . 43 44 5 -545— i 392+ 80.9' 4646If woo _ x _ +90 Ry �x �= �� TPA°— --- l 1 II I 1 I I j/ 'z/ OVEjFiOW / — �AcJ�M6E� \S \ \ / 53 \ STEEP SLOPES PER ALBEMARLE COUNTY GIS \ j p / . , r — 540XCD \S2S\\ \ \ D D D DDD °DDD °DDD °DDD ' ' � / � / / / / / / / / / � / � O\ \ � \ DD OD DD DD DD DD i / / / / / r/ / \O \I \ N D D DDD DDD DDD DDD D D i _ / , - /Oe\ D D n _ D D D D D TEg_PROTEC i WAR AI.5EM / / / / . r^�G I\ BUFFER _ � / / / � /�/ >� / �SPRINGSPRING I — — — GRAVEL II EROSION AND SEDIMENT CONTROL PLAN 0 20 40 60 SCALE: 1 "=20' EMSCALE ENGINEERING owner: TOBIAS A DENGEL TRUST 1740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a 0- NO O w LLI U7 0 Z O Of w Z J 0. V ) 0 Z W L LL J Z O O LL m 1 G 0 z Z) O U W J of Lu CO J !t title: ROSION AND DIMENT ONTROL PLAN 111=20' 1 /26/2021 t# 3OF7 ©2021 - 30 SCALE, LLC EROSION AND SEDIMENT CONTROL NARRATIVE PROJECT DESCRIPTION PUMPING INTO A SILT -SACK OR OTHER APPROVED MEANS. CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY 3. GRAVEL OUTLETS SHALL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. THE PURPOSE OF THIS PLAN IS TO CONSTRUCT A 32' X 48' MAINTENANCE SHED AND BE CLEANED WHEN SEDIMENT IS VISIBLY CLOGGING THE VOID SPACES. B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW WITH 12' WRAP -AROUND SHED AND SURROUNDING GRAVEL ACCESS AREA. SINCE 4. DIVERSIONS SHALL BE CHECKED TO ENSURE PROPER RE-ROUTING OF FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE THE TOTAL DISTURBED AREA TO COMPLETE THIS WORK IS GREATER THAN DRAINAGE. DAMAGES THAT INTERRUPT THE EFFECTIVE FUNCTIONING OF THE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A 10,000-SF, BUT LESS THAN ONE ACRE, A VIRGINIA EROSION AND SEDIMENT DIVERSION SHALL BE REPAIRED IMMEDIATELY. SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE CONTROL PROGRAM (VESCP) PERMIT IS REQUIRED. 5. ALL SEEDED AREAS SHALL BE INSPECTED REGULARLY TO ENSURE THAT A OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY VEGETATIVE COVER IS BEING ESTABLISHED. IN THE EVENT THAT THE OF THE BASIN DURING A 25-YEAR STORM OF 24-HOUR DURATION. RUNOFF EXISTING CONDITIONS SEEDING DOES NOT TAKE, CONTRACTOR TO TROUBLESHOOT AND TAKE COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE REMEDIAL ACTION UNTIL THE APPROPRIATE VEGETATIVE COVER IS EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE THERE IS AN EXISTING RESIDENCE AND GRAVEL DRIVEWAY ON THE 5-ACRE ESTABLISHED. SEDIMENT BASIN IS UTILIZED. PROPERTY, CURRENTLY ZONED RA (RURAL AREAS). THE LAND COVER ON THE 7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER PROPERTY IS PRIMARILY MEADOW WITH SCATTERED TREE COVER. THE SITE GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING SLOPES VIA SHEET FLOW TOWARD THE SOUTH. THERE ARE TWO SPRINGS AND A EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE WPO BUFFER ALONG THE SOUTHERN EDGE OF THE SITE. NO DISTURBANCE OF 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE THESE AREAS IS PROPOSED WITH THIS PLAN. THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE PROBLEM IS CORRECTED. COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO 8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES ADJACENT AREAS THE FINAL INSPECTION. UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. THE SITE IS BORDERED ON THE NORTH AND EAST BY FOOTHILL FARM, WHICH IS AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATION 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR UNDER THE SAME OWNERSHIP AS THE SUBJECT PROPERTY. RESIDENTIAL OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND OTHER PROTECTION SHALL BE PROVIDED. PROPERTIES ZONED RURAL AREAS BORDER THE SITE ON THE WEST AND SOUTH. VIRGINIA REGULATIONS VR 625-02-00 EROSION AND CONTROL SEDIMENT 10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING REGULATIONS. CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER SOIL DESCRIPTIONS 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED TO OR AS THE FIRST STEP IN CLEARING. OR OTHERWISE TREATED TO REMOVE SEDIMENT. BASED ON THE WEB SOILS SURVEY, THE FOLLOWING SOILS ARE ANTICIPATED TO 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL 11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR BE ENCOUNTERED WITHIN THE LIMITS OF WORK. BE MAINTAINED ON THE SITE AT ALL TIMES. PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE PREDOMINANT SOILS NAME RUNOFF p Acc FMCPHICFOF FLOODN0 FREQUENCY OFPONDING DEPTH TO WATERTABLE SOBS GROUP RABUN CLAY LOAM 7.15%(71C) MEDIUM I NONE NONE -SV B RABUN CLAY LOAM 15.25% 10 MEDIUM NONE NONE �80' B *RAWN CLAY LOAM 7.15%(720) -SEVERELY ERODED MEDIUM NONE NONE >80' B INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT APPROVAL BY THE PLAN APPROVING AUTHORITY. AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE '72C315 LOCATED ON THE NORTHERN FRINGE of THE WORK AREA. SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MATERIALS. CRITICAL AREAS MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING 13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY GIS MAPPING INDICATES STEEP SLOPES AND A WATER PROTECTION ORDINANCE 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL BUFFER ON THE PROPERTY. THE PROPOSED CONSTRUCTION DOES NOT APPROVED FILTERING DEVICE. SHALL BE PROVIDED. PROPOSE DISTURBANCE OF ANY CRITICAL AREAS. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES 14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS PERTAINING TO PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. EROSION AND SEDIMENT CONTROL MEASURES NECESSARY REPAIRS FOR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF 15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. AFTER WORK IN THE WATERCOURSE IS COMPLETED. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW 16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND AREA. THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: SPECIFICATIONS IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE UNLESS OTHERWISE DIRECTED BY THE ALBEMARLE COUNTY INSPECTIONS EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, TIME. DEPARTMENT. THE FOLLOWING EROSION AND SEDIMENT CONTROL PRACTICES WOOD, RUBBISH, AND OTHER DEBRIS. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF (VESCH REFERENCE NUMBER INCLUDED) MAY BE IMPLEMENTED WITH THIS PLAN 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF TRENCHES. AND IS NOT AN EXHAUSTIVE LIST: COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, VESCH REFERENCE# 3.01 - SAFETY FENCE (SAF) SECTION 13-301 OF THE CODE OF ALBEMARLE. AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER FLOWING STREAMS OR OFF -SITE PROPERTY. CONTROL MEASURE. EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE 3.02 - TEMPORARY CONSTRUCTION ENTRANCE (CE) THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO STABILIZATION. A CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT THE ENTRANCE OF THE PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THIS PROJECT SITE TO PROVIDE A MEANS OF REMOVING SEDIMENT FROM THE TIRES DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR CHAPTER. OF CONSTRUCTION VEHICLES LEAVING THE WORK SITE. THE CONTRACTOR COLLAPSE. F. APPLICABLE SAFETY REQUIREMENTS SHALL BE COMPLIED WITH. SHALL REMOVE ANY MUD FROM THE EXISTING ROAD SURFACE BY MEANS OF 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE 17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR SWEEPING AND SHOVELING, IN THE EVENT THE WASH AREA IS NOT ADEQUATE IN OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT REMOVAL. PLEASE NOTE THAT SINCE THE DURATION OF THE PROJECT WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE IS EXPECTED TO TAKE LESS THAN 60 DAYS, A TEMPORARY STONE CONSTRUCTION PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ENTRANCE IS PROPOSED IN LIEU OF A PAVED CONSTRUCTION ENTRANCE SINCE PORTION OF THE PROPERTY. ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. THE PERMANENT ACCESS WILL BE STONE. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR CONSTRUCTION SEQUENCE SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. 3.03 -CONSTRUCTION ROAD STABILIZATION (CRS) STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, ANTICIPATED START DATE: MARCH 2O21 THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT PARKING AREAS, AND OTHER ONSITE VEHICLE TRANSPORTATION ROUTES WITH ANTICIPATED COMPLETION DATE: MAY 2021 LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. STONE IMMEDIATELY AFTER GRADING. DUE TO THE LIMITED USE OF THE ACCESS 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PATHWAY, A STONE ACCESS IS NOT ANTICIPATED TO BE USED WITH THIS PLAN. SEQUENCE OF CONSTRUCTION (ONE PHASE): REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE 3.05 - SILT FENCE (SF) 1. ESTABLISH TEMPORARY GRAVEL CONSTRUCTION ENTRANCE AND TREE AUTHORIZED BY THE VESCP AUTHORITY. TRAPPED SEDIMENT AND THE SILT FENCE IS TYPICALLY INSTALLED AS A FIRST STEP IN CONSTRUCTION PROTECTION FENCING AS SHOWN ON PLAN. DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY ACTIVITIES. LOCATION AND DETAILS ARE SHOWN ON THE PLANS. 2. INSTALL PERIMETER SILT FENCE AND SEDIMENT TRAP AS SHOWN ON PLANS. MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER ENSURE DIVERSION DIKE IS PLACED SO THAT ALL DISTURBED AREA WILL BE EROSION AND SEDIMENTATION. 3.08 -CULVERT INLET PROTECTION (IP) CONVEYED TO THE SEDIMENT TRAP. 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES A SEDIMENT FILTER AREA AROUND A CULVERT INLET TO MINIMIZE SEDIMENT 3. PROVIDE TEMPORARY SEEDING ON DIVERSION DIKE AND DOWNSTREAM FACE SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE FROM ENTERING THE STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT OF SEDIMENT TRAP EMBANKMENT. DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STABILIZATION OF THE DISTURBED AREA. 4. INSTALL 15" CULVERT AS SHOWN ON PLANS. PROVIDE CULVERT INLET STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR PROTECTION AND GRADE IN DITCH TO DIRECT RUNOFF FROM CULVERT TO DURATION IN ACCORDANCE WITH STANDARD (i), WHICH STATES, "INCREASED 3.09 - DIVERSION DIKE (DD) THE SEDIMENT TRAP. VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED 5. PERFORM CUT/FILL OPERATIONS TO BRING SITE TO ROUGH PAD GRADE. ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ACROSS DISTURBED RIGHT-OF-WAY AND SIMILAR SLOPING AREAS. LOCATION BUILDING CONSTRUCTION MAY BEGIN. ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY." AND DETAILS OF THE RIGHT OF WAY DIVERSION ARE SHOWN ON THE PLANS. 6. GRADE IN DITCHES TO CONVEY RUNOFF TO CULVERT AND TO SEDIMENT TRAP. THE SITE CURRENTLY DISCHARGES VIA SHEET FLOW AND NO EROSION IS VISIBLE 3.13 -TEMPORARY SEDIMENT TRAP (ST) 7. PERMANENTLY STABILIZE ALL DISTURBED AREAS WITH PERMANENT SEEDING BELOW THE PROJECT AREA. AFTER DEVELOPMENT, THERE WILL BE NO IMPACT A TEMPORARY SEDIMENT TRAP IS TYPICALLY INSTALLED BEFORE SITE GRADING AND MULCH. ON DOWNSTREAM PROPERTIES SINCE THE DEVELOPER IS PROPOSING TO BEGINS, FOR THE PURPOSE OF DETAINING SEDIMENT -LADEN RUNOFF FROM 8. FINE GRADE SITE AND PROVIDE GRAVEL ACCESS AROUND BUILDING. CONTINUE TO DISCHARGE RUNOFF VIA SHEET FLOW. THERE WILL BE A 0.27 CFS DISTURBED AREAS. 9. REMOVE ALL EROSION AND SEDIMENT CONTROL DEVICES ONLY AFTER THE INCREASE IN THE OVERALL PEAK OUTFALL RATE FOR A 1-YEAR STORM. IN ORDER SITE IS STABILIZED AND PERMISSION IS GRANTED BY THE ALBEMARLE TO ADDRESS THIS MINOR INCREASE, TWO RIP -RAP STILLING BASINS OUTFALLS 3.31 -TEMPORARY SEEDING (TS) COUNTY EROSION AND SEDIMENT CONTROL INSPECTOR. (OUTFALLS #1 AND #3) ARE PROPOSED TO DISSIPATE THE ENERGY OF THE TO THE MAXIMUM EXTENT POSSIBLE, TEMPORARY SEEDING SHALL BE APPLIED TO RUNOFF FROM THE DITCHES AND TO DISCHARGE THE WATER DOWNSTREAM DENUDED AREAS THAT REMAIN DORMANT FOR 7 DAYS. SEEDED AREAS SHALL BE OVER THE LEVEL "LIP" SPREADER. THE LEVEL SPREADERS HAVE BEEN SIZED AT A LIMED WHEN NECESSARY AT A RATE OF 2 TONS/ACRE, AND FERTILIZED AT A RATE EROSION AND SEDIMENT CONTROL PLAN MINIMUM STANDARDS RATE OF GREATER THAN 13 LINEAR FEET PER CFS OF RUNOFF. OUTFALL #2 IS OF 600 LBS/ACRE OF 10-20-10 (14 LBS. PER 1,000 SQUARE FEET) OR EQUIVALENT. (PER 9VAC25-840-40) THE PORTION OF THE PROJECT AREA THAT WILL CONTINUE TO FLOW VIA SHEET CONTRACTOR SHALL SELECT TEMPORARY SEEDING PLANT MATERIALS FROM FLOW. NO CHANGES ARE ANTICIPATED TO THE RUNOFF CHARACTERISTICS OF TABLE 3.31-B OR C FROM THE VESCH. 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO THE SITE AS A RESULT OF THE WORK. DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON 3.32 -PERMANENT SEEDING (PS) ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE PRE -DEVELOPMENT A PERMANENT VEGETATIVE COVERING SHALL BE ESTABLISHED ON DISTURBED APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL A=2.01 AC. AREAS WITHIN 7 DAYS OF BEING BROUGHT TO FINAL GRADE AND THAT WILL NOT GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS, OR 7 DAYS IF C=0.35 BE PAVED OR OTHERWISE BUILT UPON. CONTRACTOR TO SELECT THE REQUESTED BY THE LOCAL INSPECTOR. PERMANENT STABILIZATION SHALL Q1=2.35 CFS PERMANENT SEEDING MIXTURE IN ACCORDANCE WITH THE SPECIFICATIONS IN BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE THE VESCH. YEAR. POST -DEVELOPMENT 2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCK PILES AND BORROW A=1.99 AC 3.35 - MULCHING (MU) AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING C=0.39 ALL SEEDED AREAS SHALL BE MULCHED WITH STRAW IMMEDIATELY FOLLOWING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY Q1=2.62 CFS (0.27 CFS INCREASE*) SEEDING OPERATIONS. STRAW MULCH SHALL BE APPLIED AT A RATE OF 1.5 TO 2 PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON TONS/ACRE. OTHER ALTERNATIVES MAY BE SELECTED FORM TABLE 3.35-A OF SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED *THE 0.27 CFS INCREASE WILL BE ADDRESSED BY CONTINUING TO DISCHARGE THE VESCH. FROM THE PROJECT SITE. RUNOFF VIA SHEET FLOW. 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED 3.38 - TREE PROTECTION (TP) AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT THE USE OF FENCING TO SERVE AS A VISUAL AND PHYSICAL BARRIER FOR THE VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND EXISTING VEGETATION THAT IS TO REMAIN UNDISTURBED AS PART OF THIS PLAN. COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. EROSION AND SEDIMENT CONTROL MEASURES - MAINTENANCE 4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED 1. THE CONSTRUCTION ACTIVITY OPERATOR OR HIS DESIGNEE, SHALL INSPECT AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE ALL EROSION AND SEDIMENT CONTROL DEVICES IN ACCORDANCE WITH THE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. SCHEDULE PROVIDED IN THE GENERAL CONSTRUCTION PERMIT. IT IS 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES RECOMMENDED THAT DEVICES BE CHECKED EACH DAY AND CERTAINLY SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. AFTER EACH RAIN EVENT, AND THAT REPAIRS ARE MADE IMMEDIATELY AND 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND AREAS ARE RE -SEEDED AND MULCHED AS APPROPRIATE. CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY 2. ALL SEDIMENT -TRAPPING DEVICES AND FENCES SHALL BE CLEANED OUT AT THE TRAP OR BASIN. 50 PERCENT CAPACITY OR HEIGHT, AND SEDIMENT SHALL BE DISPOSED OF BY A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 TABLE 331-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS' Rate Planting Dates Species Qs./acre) Sept. 1 - Feb. 15 50/50 Mix of Annual Ryegrass (Lolium multi-florum) & >II - 11111 Cereal (Winter) Rye (Secale cereale) Feb. 16 - Apr. 30 Annual Ryegrass 60 - IOU (Lolium multi-florum) May I - Aug 31 German Millet 0 ;b�kSilZil:ftl�J Source: Va. DSWC TS) TEMPORARY SEEDING SPECIFICATIONS 1992 VESCH STD. 3.31 TABLE 332-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA Total Lbs. Per AcreMinimum Care Lawn - Commercial or Residential 175-200 lbs, - Kentucky 31 or Turf -Type Tall Fescue 95-100%D - Improved Perennial Ryegrass 0-5% - Kentucky Bluegrass 0.5% High -Maintenance Lawn 200-250lbs. - Kentucky 31 or Turf -Type Tall Fescue 100%D General Slope (3:1 or less) - Kentucky 31 Fescue 128 lbs. - Red Top Grass 2 lbs. - Seasonal Nurse Crop ' 20 lbs. 150 lbs. Low -Maintenance Slope (Steeper than 3:1) Kentucky 31 Fescue 108 tbs. - Red Top Grass 2 tbs. - Seasonal Nurse Crop ' 20 lbs. - Crownvetch " 1 lbs, 150 lbs. ' 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. PS) PERMANENT SEEDING SPECIFICATIONS VESCH STD. 3.32 TEMPORARY DIVERSION DIKE Compacted Soil --Flow 4.5' min. Source: Va. DSWC 1'l:uc .i11)-I DD TEMPORARY DIVERSION DIKE VESCH STD. 3.09 1992 3.05 CONSTRUCTION OF A SILT FENCE (WITHOUT WIRE SUPPORT) 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. 6'MAX II Jill FLOW 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. FLOW 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. 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 SILT FENCE DETAIL VESCH STD. 3.05 YlfiE STONE CONSTRUCTION ENTRANCE GRwNn 70' MIN. A FILTER CLOTH 6' MIN.1 At SIDE ELEVATION 12' MIN.- 70' MIN. B NASHRACK L VMT 01 I I ~� POSITIVE DRAINAGE COURSE AGGREGATE R TO SEDIMENT TRAPPING DEVICE MUST EXTEND FULL MOTH OF INCRESS AND EGRESS PLAN VIEW IT MIN. FILTER CLOTH SECTION A -A REINFORCED CQICRETIE sa LO' MIN p• 'N STI p UVEME T MN BERM T MIN. Y Mo. SECTION B-B Source: Adapted from 1983 Maryland Standards for Soil Plate 3.02-1 Erosion and Sediment Control, and Va. DSWC CEO CONSTRUCTION ENTRANCE VESCH STD. 3.02 REVISIONS # DESCRIPTION DATE EMSCALE ENGINEERING owner: TOBIAS A DENGEL TRUST 1740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a _j I L_ NJ LJ_ z O z Uj 0 LJj U) C) Q z _O U) O w !t title: ROSION AND DIMENT ONTROL ARRATIVE ND DETAILS NONE 1 /26/2021 t# 4OF7 > z Z 0 U w -1 Of 2 w m Q @ 2021 - 30 LLC / CLA 1992 3.36 TYPICAL TREATMENT- 2 SOIL STABILIZATION MATTING SLOPE INSTALLATION FILL SLOPE SECTIONS ` _ SOIL STABILIZATION MATS SHOULD BE INSTALLED VERTICALLY % fK TE- SLOPE SURFACE DOWNSLOPE FOR BEST RESULTS. Q 6 SHALL BE SMOOTH / A AND FREE OF A V ROC16, LUMPS OF DFR, GRASS AND HALL BE PPLACEDTFLAT / 0 ON SURFACE FOR PROPER SOIL CONTACT. 4' 2. /F IF v ' 0 DIRT SHALL BE TAMPERED PRIOR TO LAYING TOP NP O'CR TOE BERM MAINTAIN SLOPE ANGLE TRENCH INTO BERM AND PROGRESS DOWNSLOPE SLOPE LINING SLOPE LINING TOP OF GUT OF SLOPE (WET SLOPE) (DRY SLOPE) TREATMENT - 2 POLYPROPELYENE 2. NON -WOVEN (NEEDLE PUNCHED) LOT`_�,E TREATMENT - 2 GEOTEXTRE FILTER FlE4 AMTER�, .C�F Soi^'-�ER1 OLOTII ((OEIIIND "'µ (w TREATMENT - 2) OF r' SOIL {�� BOTTOM OF FILL SLOPE BOTTOM OF CUT SLOPE BOTTOM OF CUT SLOPE 4'OR S OULOER BREAK POINT Source: VDOT Road and Bridge Standard, Plate 3.36-5 DETAIL DETAIL TAKEN FROM VIRGINI EROSION AND SEDIMENT CONTROL HANDBOOK - SOIL STABILIZATION TREATMENT 1 (EQUIVALENT TO VDOT STD. EC-2) 0 4.0' PROVIDE EROSION CONTROL MATTING (VDOT STD. EC-2) OR CLASS Al RIP -RAP (18" THICK) LINING AS INDICATED ON PLANS - SEE SHEET 7 FOR DITCH CAPACITY AND VELOCITY CALCULATIONS DITCH CROSS-SECTION EXISTING GRADE :���:L1���1��1►[e1:m_ 241►197:11F_111 TB RY AE j — fi \ _ ` — — DITCH 3 — 1 STONE I \ "'CCC — — — _ — 114-1-F PHITCH LIN€CLWITH WALK -\ _ VDOT STD. EC-2 @ 1.5% \ \ -- ---- --__ - ` \ \ \ \ \ 1 FRAME \M------- \ _ _' \ \ Y I BUILDING \j — PATH \ \ _ \ \ DITCH 213 - 68-LFV-DITCHILINED WITH VDOT STD. EC-2 @ 1.5% •/�/l \ \ � y �F� O � \ � = tr mlq� s570 — 560 \ qy \ �� 68 - — man s a 6766 65 — \ _ 64 61 62 6 _ \ �0 O 58 — 59 60 �— — — _56 57 3 7,008 SF -GRAVEL o N C \ \ \ \ \ - — �TRAVELWAA — o. el r 58.0' _ `\ \ \ \ \ \ \ \ \ 11 ■ 1 5 _ \ 22.2' o ' \ t 56- I TOBIAS A DENGEL TRUST & \ \ \ \ \ \ SHEET HDP�CULVERT 1 1 - LYNN T DENGEL TRUST / \SEE S�IEET 7 FOR OVERT c — — 32�48' MAINTENANCE I ' TMP 62-71 \ \ \ \ \ \ COMPUTATIONS/r/ 5804 BUICDIN6 ` $— — ZONE: RA \ \ \ \ \ \ \ \ / ■/ r 57- _ USE: RURAL AREAS DB 5107 PG 651 Mum \ \ \ \ \ \ \ \ So\ \ \ \ \ \ `FIN If Y 12' RAP-AROOND SHED — 20.0' — — 549 57-8 \ — 0 V \ \ \ \ \ \ \ I \ \ LIMITS OF DISTURBANCE = 0.75 A // / \ N - DITCH 2A 56-LF CLASS Al \ \ \ \ \ \ \ DITCH 1 / _ o RIP -RAP DITCH \ \ \ \ \ \ \ \ 72-LF CLASS Al RIP -RAP / / (18" THICK) @ 16% \ \ s \ \ DITCH (18" THICK) @ 1-gKI. / \ — 70 — —LIN 57-0 — \ / \ \ \ \ I \ 1 OUTFACE#1 \ / ---L� / _ 56 � — \ Rlf�-RAP STILLING BASIN / / — — 55 = \ \ \ \ \ 1 I \ LCFS / / / 54 0 — I � MIN LENGTH OF LEVELEL LIP IP = 26' / _ / I � 53 ,PROVIDED LENGTH OF LEVEL LIP27' 52 -51 - — — — — — — — \ 50 49 — — — — 1 46 47 --545--- �45 4; / 45- O — 'o L3 0 — 04 15.0' — �/ / 452 Now now sow 540 — /OW OWN / / s _ ' FALL 9dT#3 / REVEL LIP / �'/ / RIP -RAP STILLING BASIR� yE9 9 / MIN LENGTH OF LEVEL LIP = 13' I 1 1 I I I I I \ \ \ 1 / / / / / / / / guRJ�yg,2�1 OVIDEDILENGTH OF LEVEL LIP = 15� 4411,* 011 _ 0� STEEP SLOPES PER ALBEMARLE COUNTY GIS �\ ° °� p . / — 540 I � ',7 °�pp°DpDDDpv;, 1;7 D°ppDDpDDD°p // // _ / / / \ D D ° D ° D D D D D ° / / / / / / / / / _ D p° ° D p° ° D °° \ / PRROTECT �N ONN GIS FTE SPRIN _ / f SPRING GRADING PLAN on 0 20 40 60 SCALE: 1 "=20' EMSCALE ENGINEERING owner: TOBIAS A DENGEL TRUST 1740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a 0— NO LL O 11J U) 0 z O Of 11J Z J 0. U/ 0 Z W L Q LL J J Z O O LL m 1 G 0 z Z) 0 0 w J Lu w Co J Q sheet title: GRADING PLAN scale: 11I=20' date: 1 /26/2021 I sheet # 5OF7 @2021 - 30 SCALE, LLC _ 5q6� r:7 � J / AREA TO �o- SEDIMENT TRAP A=1.97 AC. 575- _ \ \ - DITCH - �- 114�CVDIFCFFNNE I \ --565� VDOTSTD. C-2@1. �- _ \ ___________ \ \ \ �F r DITH 2B-68-DITCFI,LINEDWITH OT STD. EC-2 @cb 1.5k -570- - P _ -560� \ \ \ �qY \ \ 6867 - TEE 64 6 \ 59 60 67 62� \ O 5758- \ � 5 \ \ \ \ 57-� \ \ \ \ 7,080-SP GRAVEL m \ ' \-TRAVELWA9 - + \ \ \ + + 56 \ \2 m - \ 15" HDPE CULVERT+ 1 - - \ 34K`48' MAINTENANCE 8 /✓// � 5A BUILDING • ` \ 1 \ \ \ / ,� \� `12' WRAP -A OR UN[15HED- 542 578 SSy \ 20.0' 59.T- \ DITCH 2A 56-LF CLASS Al DITCH b RIP -RAP DITCH \ \ 72-LF CLASS Al RIP- �� 0 (115-THICK) @ 16% \ D CH (18" THICK) @ o - - 57- = 56 55 - I - 54 - _ 53 0 / - 52- 48 47 45 46 - / 42- -4T44 AR / 45 O 42 - 1-7 _ / 39 540 DRAINAGE DIVIDES (SEDIMENT TRAP) < < ------ �_--_--� - j--,-- 596 _ 5790- ' f / / / / � -580- � _ 575 � �575- `� DITCH STONE \ 114-LF I \ �+ WALK I \ IN.\ VD TD. EC-2 @ 1. \ _ __ \_ ____ __ ✓' - _565- \ FRAME \ T \ \ \ BUILDING \ a/6? _ �- F\'_"" DITCH 213-681f_1v-DITCHiLINED WITH OTSTD.EC-2@1.5% 69 6867 - \ 66 - \ 65 64 _ \ \ IN \ 0 62 8 D 60 61 \ \ \\\ \ \ 54 5 S5S \ \ \ 7,080 SF GRAVEL \ \ TRAVELWAP' o. 1 OVERLAND TO \ \ _ �+ \ 58.0' - ' �6� OUTFALL#1 \ \ 15"HDPECDLVER \+ 222' A-0.19 AC. \ \ \ / 48'MAINTENANCE _ 6 � 6 -6 \ , v 57- C=0.50 \ \ �' - - - 61 - \ 11=3.38 IN/H R \ \� %/ ,� \J - `12'WRAP-AO�B RONRSHED Q1=0.32 CFS \ \ 54 20.0, 57 - JW \ / \ DITCH s9 72-LF CLASS Al RIP- `n D CH TOTAL TO \ ✓ '/ / AREA TO CULVERT A=1.39 AC. C=0.35 Tc=10 MIN 11=3.38 1 N/H R Q1=1.64 CFS 110=5.31 IN/HR Q10=2.58 CFS - - - AREA TO OUTFACE #3 A=0.20 AC. C=0.42 11=3.38 IN/H R Q1=0.28 CFS POST -DEVELOPMENT `- TO OUTFACE #2 A=0.21 AC. C=0.50 - 11=3.38 I N/H R 01=0.35 CFS DITC 2A 56-L LASS Al RIP- DIT1CH �(18 CK)@16k OUTFALL #1 - - _ _ 6 - - , 50 51 - A=1.58 AC. 49 48 -_ pb 47 46 r�' C=0.37 A5 A _ - - 5 45 432 / 440 11=3.38 1N/H R ' ' - - - - - 44- Q1=2.0 CFS / ; / 45- ° - 0 r- ,- OUTFALL#2 _ / �S-}� / , REDUCTION IN SHEET FLOW _ TF LL #1 SHE FLO�y VER O LFjVEL SPrREADER DRAINAGE DIVIDES 56 - 55 54 - - �. OUTFALL#3 SHEET FLOW OVER LEVELSPREADER PRE -DEVELOPMENT AREA TO SHEET FLOW A=1.99 AC. C=0.35 11=3.38 I N/H R Q1=2.35 CFS 0 30 60 90 SCALE: 1 "=30' Om SCA LE ENGINEERING fowner : TOBIAS A DENGEL TRUST 740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC I871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com a a_ 0 I..L O W 0 U) Z Z O I L W Z Q nJ _ I 0 Z Q W LL J 0 O LL I �T 0 00 co Q0 / Lic. No. 33028 ✓� 1 /26/2021 a 0NAL -E : title: RAINAGE VIDES 111=30' 1 /26/2021 6OF7 @2021 - 30 SCALE, LLC Channel Report Hydrafiow Express Extension for AutodeskV Civil 3DO by Autodesk, Inc. DITCH 1 Triangular Side Slopes (z:1) = 2.00, 2.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 100.00 Slope (%) = 15.00 N-Value = 0.030 Calculations Compute by: Known Q Known Q (cfs) = 3.08 Elev, (ft) 102.00 101.50 101.00 100.50 100.00 99.50 Section DITCH CALCULATIONS Tuesday, Jan 26 2021 Highlighted Depth (ft) = 0.48 Q (cfs) = 3.080 USE CLASS Area (sgft) = 0.46 �At RIP -RAP Velocit f 7s = 6.68 Wetted Perim (ft) = 2.15 Crit Depth, Yc (ft) = 0.69 Top Width (ft) = 1.92 EGL (ft) = 1.17 Depth (ft) 2.00 1.50 1.00 0.50 0.00 -0.50 .5 1 1.6 2 2.5 3 3.5 4 4.5 Reach (ft) Channel Report Hydrafiow Express Extension for Autodesk® Civil 3DV by Autodesk, Inc. DITCH 2A Triangular Side Slopes (z:1) = 2.00, 2.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 100.00 Slope (%) = 16.00 N-Value = 0.030 Calculations Compute by: Known Q Known Q (cfs) = 0.53 Section Tuesday. Jan 26 2021 Highlighted Depth (ft) = 0.25 Q (Cfs) = 0.530 USE CLASS Area (sgft) = 0.13 Al�RIP-RAP Velocit fUs = 4.24 Wetted Perim (ft) = 1.12 Crit Depth, Yc (ft) = 0.34 Top Width (ft) = 1.00 EGL (ft) = 0.53 111111111111111-111111111111111111111111111111111111111111111111111111111111111111-llllllllllllll, 11111111111111111111111111111, 1111111111111111111111111111111111111111,-11111111111111111111111111111, 1 1 IIIIIIIIIIIIIIII, llllllllllllll,llllllllllll♦llllllllllll♦lllllllllllll.11llllllllll♦llllllllllllll, - 100.50 100.00 99.50 .5 1 1.5 2 2.6 3 3.5 4 4.5 5 Reach (ft) Depth (ft) 2.00 1.50 0.50 0.00 n cn Channel Report Hydrafiow Express Extension for AutodeskV Civil 3DO by Autodesk, Inc. DITCH 2B Triangular Side Slopes (z:1) = 2.00, 2.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 100.00 Slope (%) = 1.50 N-Value = 0.030 Calculations Compute by: Known Q Known Q (cfs) = 0.53 Elev (ft) 102.00 101.50 101.00 100.50 100.00 99.50 Section Tuesday, Jan 26 2021 Highlighted Depth (ft) = 0.38 Q (cfs) = 0.530 USE EC-2 EROSION Area (sgft) = 0.29 CONTROL MATTING Velocit ft s = 1.84 Wetted Perim (ft) = 1.70 Crit Depth, Yc (ft) = 0.34 Top Width (ft) = 1.52 EGL (ft) = 0.43 Depth (ft) 2.00 1.50 1.00 0.50 116 n cn .5 1 1.5 2 2.5 3 3.5 4 4.5 5 Reach (ft) Channel Report Hydrafiow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. DITCH 3 Triangular Side Slopes (z:1) = 2.00, 2.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 100.00 Slope (%) = 1.50 N-Value = 0.030 Calculations Compute by: Known Q Known Q (cfs) = 2.58 6 66 101.50 101.00 100.50 100.00 99.50 Tuesday, Jan 26 2021 Highlighted Depth (ft) = 0.69 Q (Cfs) = 2.580 USE EC-2 EROSION Area (sgft) = 0.95 CONTROL MATTING Velocit ft/s = 2.71 Wetted Perim (ft) = 3.09 Crit Depth, Yc (ft) = 0.64 Top Width (ft) = 2.76 EGL (ft) = 0.80 Depth (ft) 2.00 opil 0 .5 1 1.5 2 2.5 3 3.5 4 4.6 5 Reach (it) Section 1.50 1.00 0.50 0.00 -0.50 CULVERT CALCULATIONS Culvert Report Hydraflow Express Extension for AutodeskO Civil 3D(& by Autodesk, Inc. Tuesday, Jan 19 2021 Invert Elev Dn (ft) = 54.00 Calculations Pipe Length (ft) = 57.00 Qmin (cfs) = 4.10 Slope (%) = 0.51 Qmax (cfs) = 4.10 Invert Elev Up (ft) = 54.29 Tailwater Elev (ft) = (dc+D)/2 Rise (in) = 15.0 Shape = Circular Highlighted Span (in) = 15.0 Qtotal (cfs) = 4.10 No. Barrels = 1 Qpipe (cfs) = 4.10 n-Value = 0.013 Qovertop (cfs) = 0.00 Culvert Type = Circular Concrete Veloc Dn (ft/s) = 3.78 Culvert Entrance = Square edge w/headwall (C) Veloc Up (ft/s) = 4.81 Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 HGL Dn (ft) = 55.03 HGL Up (ft) = 55.11 Embankment Hw Elev (ft) = 55.58 Top Elevation (ft) = 56.50 Hw/D (ft) = 1.03 Top Width (ft) = 40.00 Flow Regime = Inlet Control Crest Width (ft) = 30.00 ew dl ia111D112RVEAT aw6MM MIMIIMPV ra�cr•wr .� �� 0n9 A l 1 NOAA ATLAS 14 POINT PRECIPITATION FREQUENCY ESTIMATES: VA Lla daacrlplfen Dab type: Prr<elb wbnsky v INdta: 6gUsh v lYne aaabe law: Par[gl tl,ee9pn .. ]Nacf looliwn II Manually a)6y IeaMlen lOr9nn+el Oe0rec5 uea='3a Be1N W)' LYbde-O Lnnaft,01 $ueMl EI 6y 91tllOn nlatel V4 HlalltlOal: S94Cl ni9M V oley aea,waa nab rmpvl ram+mrvn rlvr:,n.a,% Q 1 UN bwap 0f ESRI nleac9sn map n,w baavlq, try edll,q me Hoer Naps:Nla.ercals,,a,N b me Newry. al uatacl us a mac wem .sr�",vaagrrt. 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(SAI (6588 9Ee)5) 47199231 2.92 3.35 3.98 4.48 AF 541 6.86 5.22 60 1 697 '1543111 13M UI 14515561 4676e21 l5196451 it 695, 15 79734) ,6027731 153 233 2.83 3N 3.73 4.t1 4A8 aN a.29 60s 1 T4 2141 210 2.591 12.55 3.13) (292 3. ) n.31 4.121 (36a 4.511 0.W 4911 i4.26 5.331 N.50 SBU (l 61 6.261 REVISIONS # DESCRIPTION DATE EE] SCALE ENGINEERING fowner:TOBIAS A DENGEL TRUST 740 FOOTHILL FARM DRIVE CHARLOTTESVILLE, VA 22911 engineer: 30 SCALE, LLC I871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com z a I L v J 0 0 Z Z O Q U m W coz Uj ti N G W Z IIIIIIIIIIIIJ O O laaaaa- O O U. N 79 G In 9 f 01 -t title: ITCH AND ULVERT ALCULATIONS NONE 1 /26/2021 t # 7 0 F 7