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WPO202000053 Plan - VSMP 2022-11-10
GENERAL NOTES OWNER: STANLEY MARTIN COMPANIES LLC 11710 PLAZA AMERICA DRIVE, SUITE 1100 RESTON, VIRGINIA 20190 DEVELOPER. STANLEY MARTIN HOMES 404 PEOPLE PLACE, SUITE 303 CHARLOTTESNLLE, VA 22911 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 (434) 293-3719 TAX MAP NO.: 055CO-03-00-000AO - STANLEY MARTIN HOMES LLC (16.278 AC) 056A1-01-00-02500 - STANLEY MARTIN HOMES LLC (1.84 AC) 056A1-01-00-029RO - STANLEY MAR77N HOMES LLC (3.030 AC) POR77ON OF EXIS77NG CLING LANE R/W - 0.343 ACRES TOTAL AREA: PHASE 11A (RECORDED IN MAY 2022) IS 4.953 ACRES PHASE I1B & PHASE III - NET ACREAGE IS 21.284 ACRES PHASE I (RECORDED IN JANUARY 2020) IS 10.377 ACRES R-6 RESIDENTIAL, STANDARD LEVEL - CLUSTER DEVELOPMENT WITH FLOODPLAIN AND STEEP SLOPE OVERLAY DISTRICTS. PREVIOUS ZONING APPROVALS FOR THE PLEASANT GREEN DEVELOPMENT INCLUDE: SP1990-00103 LOD2014-00009 LOD2021-00018 SUB2015-00029 SUB2017-00099 FDP2021-00004 PROPOSED USE: TOTAL UNITS WITHIN PHASE IIB & PHASE III ARE 173 UNITS - 145 SINGLE FAMILY ATTACHED RESIDENTIAL UNITS (VILLA UNITS AND TOWNHOUSE UNITS) + 28 SFD UNI7S TOTAL UNITS WITHIN PHASE IIA: 24 UNITS - (14 SFA UNITS & 10 SFD UNITS) PRESERVED11MANAGED SLOPES: THERE ARE COUNTY DEFINED PRESERVED AND MANAGED STEEP SLOPES WITHIN THE LIMITS OF THE PROPERTY, AS SHOWN ON SHEET 2. OFF-SI7E PRESERVED AND MANAGED STEEP SLOPES HAVE ALSO BEEN SHOWN & LABELED ON THE EXISTING CONDITIONS SHEET. THIS PLAN DOES NOT PROPOSE TO IMPACT PRESERVED STEEP SLOPES. THE SMALL, ISOLATED MANAGED STEEP SLOPES LOCATED ON IMP 55C-03-A IS PROPOSED TO BE IMPACTED. BUILDING HEIGHTS, MAXIMUM BUILDING HEIGHTS SHALL NOT EXCEED 35 FEET SETBACKS: FRONT.- 5' MINIMUM (25' MAXIMUM FROM R/W OR EDGE OF SIDEWALK) SIDE: NONE - MIN. 10' BUILDING SEPARATION (ANY BUILDING THAT EXCEEDS 35' IN HEIGHT SHALL BE SEPARATED FROM ANY OTHER BUILDING BY 10' PLUS 1' FOR EACH FOOT THE BUILDING EXCEEDS 35' IN HEIGHT) REAR. 20' MINIMUM GARAGE. 18' MINIMUM FROM THE R/W OR THE EXTERIOR EDGE OF THE SIDEWALK SUBDIVISION STREETS: CURB & GUTTER WATERSHED: LICKINGHOLE CREEK WATER SUPPLY WATERSHED AGRICULTURAL/ FORESTAL DISTRICT.• NONE TOPO & SURVEY. THE BOUNDARY LINE, PARCEL INFORMA77ON AND TOPOGRAPHY WERE PROVIDED BY ROUDABUSH, GALE AND ASSOCIATES IN JANUARY OF 2019. THIS INFORMA77ON WAS FIELD VERIFIED ON NOVEMBER 13, 2020. DATUM: NAD 83 EXISTING VEGETATION. PAR77ALLY WOODED WITH (2) RESIDENCES ON THE PROPERTY AND EXISTING GRAVEL DRIVEWAYS. LIGHTING., NO STREET LIGH77NG IS PROPOSED WITH THE DEVELOPMENT. ALL PORCH LIGHTS MUST MEET THE REQUIREMENTS OF SECT70N 4.17 AND BE BELOW 3000 LUMENS. PHASING. THIS PROPERTY SHALL BE DEVELOPED W17HIN 3 PHASES. CURRENTLY, THIS PROPOSED PLAN INCLUDES PHASES 2 & J. BUILDING SI7ES• EACH PARCEL CONTAINS A BUILDING SITE THAT COMPLIES WITH THE REQUIREMENTS OF SECTION 4.2.1 OF THE ALBEMARLE COUNTY ZONING ORDINANCE. BURIAL SITES: A CEMETERY EXISTS ON THE PROPERTY (PARCEL IMP 56A-1-26). THE CEMETERY SHALL REMAIN AND WILL BE PRESERVED WITH THE DEVELOPMENT. STREAM BUFFERS. THE 100' STREAM BUFFERS SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER PROTEC77ON ORDINANCE FLOODPLAIN: A PORTION OF THE PROPERTY IS LOCATED WITHIN A FLOODPLAIN ZONE AS SHOWN ON FEMA MAP#51003CO229D, DATED FEBRUARY 4, 2005. RETAINING WALLS. RETAINING WALLS ARE PROPOSED UNDER A SEPARATE PLAN AND ARE SHOWN FOR INFORMAT70NAL PURPOSES ONLY WITH THIS SET. LANDSCAPING. STREET TREES SHALL BE PROPOSED WIN THE FINAL SITE PLAN ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS SET FORTH IN SECT70N 32.7.9 OF THE COUNTY CODE. NOTE.• EACH LOT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER. IMPERVIOUS AREAS: PHASE I EXIS77NG BUILDING & STRUC77JRES 2,975 SF PROPOSED ROADWAYS & PARKING LOT 75,500 SF PROPOSED SIDEWALK 23,375 SF PROPOSED BUILDINGS 56,520 SF PROPOSED DRIVEWAYS 17,800 SF FUTURE IMPERVIOUS AREAS 10,650 SF EMERGENCY ACCESS ROAD 11,575 SF TOTAL 198,395 SF (4.55 AC) PHASE ll PROPOSED ROADWAYS & SIDEWALKS 121,175 SF PROPOSED RESIDENCES 132,140 SF PROPOSED DRIVEWAYS 35,280 SF TOTAL 288,595 SF (6.63 AC) PHASE 111 PROPOSED ROADWAYS & SIDEWALKS 14,650 SF PROPOSED RESIDENCES 67,925 SF TOTAL 82,575 SF (1.90 AC) STORMWATER MANAGEMENT' A STORMWA7ER MANAGEMENT PLAN IS PROPOSED WITH THIS WPO PLAN TO TREAT PHASES ll & 111 OF 7HE PLEASANT GREEN DEVELOPMENT. ONE WET POND AND TWO UNDERGROUND DETENTION SYSTEMS ARE PROPOSED TO MEET MINIMUM STORMWATER QUANTITY REQUIREMENTS FOR PHASES ll AND Ill. THE WET POND, A DOWNSTREAM CONSERVA77ON AREA BELOW THE POND's LEVEL SPREADER, AND TWO VEGETATED FILTER STRIPS BELOW 7HE TWO UNDERGROUND DETENTION SYSTEMS' LEVEL SPREADERS ARE PROPOSED WITH THIS WPO PLAN TO MEET MINIMUM STORMWATER QUALITY REQUIREMENTS FOR PHASES Il AND Ill. ALSO, 7HERE IS A SURPLUS OF WATER QUALITY CREDIT THAT WILL BE APPLIED TO THE CONNECTOR ROAD VSMP PLAN ASSOCIATED WITH THIS DEVELOPMENT (WPO 201900027). LAND DISTURBANCE., PHASE l LIM17S OF DISTURBANCE = 1315 AC (WPO 201900003) PHASE I BORROW AREA=2.36 AC. (AMENDMENT fl TO WPO 201900003) CONNECTOR ROAD LIMITS OF DIS77JRBANCE = 1.99 AC (WPO 201900027) PHASES Y & III LIMITS OF DISTURBANCE = 16.99 AC (THIS PLAN) OFFSITE EASEMEN T.• ALL PROPOSED GRADING SHALL BE CONSTRUCTED ON SI7E OR WITHIN EXIS77NG RIGHT-OF-WAY. NO OFFS17E EASEMENTS ARE PROPOSED KITH THIS DEVELOPMENT. NO7ES• 1) THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FOREST DISTRICT. 2) ONLY (1) DWELLING PER LOT SHALL BE PERMITTED. 3) ALL PROPOSED EASEMENTS SHALL BE DEDICATED TO PUBLIC USE. 4) STREET TREES SHALL BE PROVIDED ALONG ALL 7HE PUBLIC STREETS 40' O.C. IN ACCORDANCE WITH VDOT AND ALBEMARLE COUNTY STANDARDS. 5) THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE. PLEASANT GREEN PHASE II VSMP PLAN AMENDMENT WP0202000053 AMENDMENT #1 WHITEHALL DISTRICT ALBEMARLE COUNTY, VIRGINIA SHEET LAYOUT SCALE: 1" = 150' LEGEND EROSION CONTROL PLAN/METRICS SA SAFETY FENCE * 3.01 OP OUTLET PROTECTION 3.18 EDGE OF PAVEMENT CURB 200 PROPOSED CONTOUR � SEDIMENT TRAP OR BASIN CRS O CONSTRUC77ON ROAD STABILIZA77ON J. RR RIPRAP 3.19 SOIL BOUNDARY BUILDING = = DRAINAGE DIVIDE CE CONSTRUCTION ENTRANCE 3.02 RR UTILITY STREAM CROSSING 3.25 PROPOSED ASPHALT . LIMITS OF CLEARINGIGRADING SF SALT FENCE 3.05 SA TEMPORARY SEEDING 3.31 STREAM BANKS LIMITS OF DISTURBANCE DIVERSION DIKE lP INLET PROTECTION 3.07 PS PERMANENT SEEDING 3.32 100' WPO BUFFER RIGHT-OF-WAY DIVERSION _ _ _ PROPOSED EASEMENT. O o- TREE PROTECTION DD TEMPORARY DIVERSION DIKE 3.09 O TREE PRESERVATION 3.38 VARIES WITH SHEET DRAINAGE PIPE o 0 0 O-SAFETY FENCE RIND 7EMPORARY RIGHT-OF-WAY DIVERSION 311 OC AND PROTEC77ON DUST CONTROL 3.39 BENCH MARK SILT FENCE PROPERTY LINE VDOT STANDARD STOP SIGN ST TEMPORARY SEDIMENT TRAP 313 * WRGINIA EROSION & SEDIMENT CONTROL PROPOSED HANDICAP PROPOSED CONCRETE SB SEDIMENT BASIN 3.14 HANDBOOK SPECIFICA77ON NUMBER PARKING SPACE STRIPING INLET PROTECTION 0 0 0 0 0 0 0 100 YR. FLOODPLAIN RIPRAP, OUTLET PROTECTION OR CONSTRUCTION ROAD - - -200- - - EXISTING CONTOUR STABILIZAT70N CRu.LLi CROSS OCK AYLANDS GRANT SITE L t Lfl tDSITE R E A LS WAYLANn Pe. Crozet 2: . VICINITY MAP SCALE: 1"=2000' PARK V I L L Sheet List Table Sheet Number Sheet Title 1" COVER 2" EXISTING CONDITIONS & DEMOLITION PLAN 3** EXISTING CONDITIONS & DEMOLITION PLAN 4** OVERALL SITE LIMITS OF DISTURBANCE AREA 5 EROSION & SEDIMENT CONTROL NOTES, NARRATIVE & DETAILS 6** PHASE I EROSION & SEDIMENT CONTROL PLAN 7 PHASE I EROSION & SEDIMENT CONTROL PLAN 8** PHASES 11 EROSION & SEDIMENT CONTROL PLAN 9 PHASES 11 EROSION & SEDIMENT CONTROL PLAN 10** PHASES III EROSION & SEDIMENT CONTROL PLAN 11 PHASES III EROSION & SEDIMENT CONTROL PLAN 12 EROSION & SEDIMENT CONTROL PLAN DETAILS 13 EROSION & SEDIMENT CONTROL PLAN DETAILS 13A EROSION & SEDIMENT CONTROL PLAN DETAILS 14 PRE -DEVELOPMENT STORMWATER MANAGEMENT PLAN (WATER QUANTITY) 15** POST -DEVELOPMENT STORMWATER MANAGEMENT PLAN (WATER QUANTITY) 16** STORMWATER MANAGEMENT PLAN (WATER QUALITY) 17 STORMWATER MANAGEMENT DETAILS 18 STORMWATER MANAGEMENT DETAILS 19 STORMWATER MANAGEMENT DETAILS 20 UNDERGROUND DETENTION SYSTEM STANDARD NOTES & DETAILS 21** MITIGATION PLAN 22** PROPOSED EASEMENTS 23** PROPOSED EASEMENTS 24** PROPOSED EASEMENTS 11* *GRADING & DRAINAGE PLAN 12* *GRADING & DRAINAGE PLAN 13* *GRADING & DRAINAGE PLAN 28 TOTAL NUMBER OF SHEETS *THE GRADING & DRAINAGE PLAN SHEETS HAVE BEEN ADDED TO THIS SET FOR INFORMATIONAL PURPOSES ONLY. THESE SHEETS DEMONSTRATE THAT POSITIVE DRAINAGE HAS BEEN PROVIDED AWAY FROM 7HE HOUSES FOR A MINIMUM OF 10'. THESE SHEETS ALSO SHOW THE TOP & BOTTOM ELEVATIONS OF THE RETAINING WALLS. ** INDICATES MODIFIED SHEETS 107H THIS PLAN AMENDMENT. dment #1 Changes (WPO 202000053): Sheet i The layout shown corresponds to the current plans under review. The sheet index has been updated to denote with two asterisks which sheets have changed. The title, and borders throughout the set, have been revised to reference this set as a plan amendment. Sheets 2.3 The notes within approved sheets 2 & 3 have been transferred to an 'Existing Conditions Legend' with corresponding numbers. Sheet 4 The boxed 'Limits of Disturbance Note' located in the middle bottom portion of the page was added with this amendment. The same note was added to sheet 16, in the middle -left portion of the page. Sheets 6 & 8 The stockpile shifted approximately 100' horizontally to correspond with the current layout, which is now shown on sheet 10. Sheet 8 The interior area where phase III is located is now shown with proposed grading. The demolition of the existing structure in this same area is now shown. Sheet 20 The current layout is now shown. Sheet 15 Subarea D's post -development time of concentration was reduced from 0.23 hours to 0.18 hours with the current layout, which is now also shown on this sheet and is reflected in the calculations addendum #1 previously provided/reviewed. Sheet 16 Subarea 0's post -development 2- and 10-yr routed outflows were updated per the time of concentration revision noted above. The current layout is now shown. Sheets 21-24 & 11-13 IThe current layout is now shown. APPROVED by the Albemarle County Community Developpment Department Date 11/10/"2022 File WP020200053-amendment 1 APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNER/ZONING ENGINEER INSPECTIONS ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARMENT OF TRANSPORTATION HEALTH DEPARTMENT !SO p 9/22/22�� S, r `o �'sl�nreT. �A Z z O J U) z w O ON L� m N w Lo J z ¢ uj N O H a in z o / w LU w ce N N HN N 0) N 0 r4 rA � rn L9 W W Z l7 Z w Ul Z J J 0 U Cn ti M M Cn N 'Cr M 17 i N O O N N Ld J LU O J U i LU 1- LU U) LU lY (Q V O O N z LU 0 z LU I '4' M LU r) 1 LU LU / (0L V rro W O U JOB NO. 182154 AS SHOWN 1 — / L53 , - " - ti �, \ / -- —e`-^ `- -- -- - -�� --_ r---_ -----_ W w yw _ - r'" - � XISTINGACSA8" DI WATERLINE EXISTING BARN TO BE � .� " : /' / �- '- ,. ��.�.� — _4 �-�- Li ` RENOVATED FOR USE BY PORTION OF EXISTING 6" DI WATERLINE AND r / _ _ _�� " ' / THE NEIGHBORHOOD "1'• / %'y \ '� �., XISTING BLOW -OFF TO BE REMOVED. EXISTING i 5 O _ �' _ ��23 — .` - / — N -- i' VACANT SERVICES SHALL BE ABANDONED. I Cy P,(- MRz — — — — — — — _—_ _ �- — _ — _ �\ \ + EXISTING HOUSE TO BE I l i / f ' i / " \ �� \� / 4_q ,+i, 'r'. , V) �RGEN c ssFPSE _ --- L J C22 y,,`CONVERTEDTOACLUBHOUSE .� iy �, ? �}` `� z _ ,i (STING RWSAiz" DI WATERLINE w / \- j f �> I \ `< 1 �, '°`� /' ' '' / ' �� � \ \ :®i` \I / .' 6 1 1 3 pR Atil T� m, Z O Q i DE MERGENCY ACCESS ROAD \ "r 7 �.P 5 UR 327 4 6 �P�� k O _ \ PHASE I \ _; =' ART DD \ a PROPOSED WITH THE PLEASANT GREEN PHASE I � — _ _ _ / _ K j ROAD &UTILITY PLAN -SUB-zoig-0007i — — J \ T4 `�\� \\ ` \ l /' i '' �/'✓ \ \ r,.�'C-_ F pEsg6pG 3D$ g6 (^ \� \ O V r4 TO BE REMOVED WITH PHASE II AND \" \ !' A` ' \ N' D A`1 3a`1' SIN. H w Ln (14)STREETTREESALONGMCCOMB ` ^\ x ' / ' 3 "a%� ��/ y` D G 0� e V� REPLACED WITH MCCOMB STREET STREET TO BE REMOVED AND REPLACED P \I z EXTENSION \ \ I /,',b„ ,tg, / / DB i _ � w ' CULVERT& OUTFALL PROPOSED WITH THE i _ --_ WITH PROPOSED IMPROVEMENTS "> \ I ��/ p / �JJ` / `,� ICI 0 a u / _ _�-�,___�� LEASANTGREEN PHASE I ROAD & UTILITY 7A , PLAN - SUB-20ig-0007i TO BE REMOVED I �, � ,, , '„ q �LI'7!! . / A �,✓ / �� T Lu 56A1-1 Lu NIF ILV M ACe DB 1411 PG 3670(PLAT ------ RpE,' / I �I \ '�-_____- — i k_. ` ' e� O \ ZONING: R6 DRIVIVE`, � l I — / '� '� ,' - — — — — — I \ STANLEY MARTIN HOMES LLC _ TMP 056A1-01A1-01-00-02500 PHASE III CUL-DE-SAC / ,I1202100004144 1.8,500 ac. TO #202100004144BEREMOVEDWITH N/FTMP 6 -35 RNELL i I '- _-- PHASE II CONSTRUCTION DB 576 PG 3C iPLIT) TMP 56A1 1- ' EXISTING SANITARY SEWER �' / A ,' (` ,' �; I I � ,�tZ-' q-A �'� N/F �' / \ '`�'-_ PHASE LINE P. TO BE REMOVED AND EXISTING / ----_ SA F. EASEMENT TO BE VACATED i ,-' / / `� ` / ,' _ J I n` ?` 6-A �'�' BM DB 2143 PC \ TMP OS - - -02900 , STANLEY MARTIN HOMES LLC r � � I � / , � � � , 6A1 01 00 r � / DB 150 PG 23 (PLAT) \ INST. 320220005001 ' I / �i i '�' / /' 3A # PORTION OF STING ROADWAY w N N -- PHASE II ,�' / / ,�.. \ \ /, P EXISTING TO BE REMOVED , ' /- - -• ` 3`,'.... ik \� \ / ~ ry N --_ A. .� -ate- i ��• /' _ , \ \ , , '' ,' �I .. _ ', T \ / S6A1 1 33A \ / BA ER, JAMES L. OR \ ' - �� —� -,LORES J. za ■ - _ C2 O C28 / '�2 _ - G� n _ - / - -- _ - B DB 1980 PC 534 (PLAT) L9 '/ _ - Y to 6 �• ����� - - --� II TOP OF 85 ZONING: R2 ,_ _ / �/ / - _ - 1 / ,/ / /,' ■ \ / /,i i0I —__� '�, ///' '— i/ _ I d,� ' n� ICI',, ��`" i N/F SA DAN OR \ NE \Lu STANLEY MARTIN HOLES LLC ' / PHASE II %•',/ i I I r V., / I`� �_ I� I \ ANG A �1Ij�I3 \I / -- TMP 055 O-03-00-000AO ,�' / I \ n\I `\ / , / / '/ j , w°b . 1 ' ��� n i -I \� DB 2413 214 JE, E1W i TMP 5 _ Ih r �, 11 `.J� � ---- R / \ 3r--- -_ o _ - t / — L3-_ _ _ , I - l i 2 B 1980 PC 53 (PLA N/F BABER, JAMES L. Lu ■ INST.#:202100004144 ,' \ I _ / i /, / IN z _ : \ _ _ _ i _ _ 1 _ ZONING: R 0 M Q .ZTM ��________ i i' �� � � � I I Z�L'f� � � � � - � � _- / �' '� --- � � �i //� I l r ' 4'7.I� 0 - ' D PC 474 ' ' J W_ / _ — _ \ �� DB 12 5PC 397 PLAT N - -- / _ STANLEY MARTIN HOMES LLC -_ .' i' LIMITS OF PHASE + / 6-A i / --__ _L l � Si TMP 056A1-01-00-02600 ._-- �' / '� �,- � �' � , .� v� ���, � / / i / l — __ � l� I .III I TMP 56A1-1-32B � _ z — ' i i / _� EXISTING 100' WPO / , / , _11 a , , ,i , r + �418 / , / ) " I / L I I . w / yi W n _ INST.#:202100004144 _ / _ er' i ,,, _ , �'� r N/F RARER, JAMES L. _I , II / -■.w STREAM BUFFER---- / ,/ / .'� / \ < / 1, go "i w ; / --__ -- — — _- _- -A � /, � , i'I/ � I`� \� I \ OR DELORES J. FROM STREAM BANKS, CONTIGUOUS _ i �' �' ,'�'- , I ` / — _ / ,'- \ ,� / �' C' y /'�` z- l� ` l� \ DB 1222 PC 394CN G \` WETLAND AREAS ANDioo'FLOODPLAIN -F0 / - _ _-� A'� � i I, _ � \ \ (397 PLAT) _ i 1 3 ZONING: R6 � � � CN TMP Al-1-32A ,r -- �v — - i i v ,/ „ , I , / , `� "� - / �i,r l N/F ZEL R, TROY -- _-- i� �v— I _-' �'- —i doe— vv I ��ii DB 21 4 PC 658 i -/ / 250 2 LAT) 7 PHASE II PROPOSED' / // \� \ /'>J� I v r ; i i /Il ZONI > L - - _ _ a � -__- - � _ -__- _____-- ROADWAY EXTENSION ANJill i/rl - � O _ _ _ / - _ — _ _ _------_ ` _ CONNECTION TO TMP 6A-i-z6 III I C ,` \ \ ' / I\ / 5 t ,•„ \ EASEMENT LEGEND L �I `\\ z I ,h � / / � � A. D.B. 5z6/+/ _ � � � _ � / ow„ ' ° � �, v I d2 e, � J j.m /`• , i /t �i PG. 297 B. D.B. 5537, PG.745 i C. D.B.D.B. 1255, P . 423 & 2396, P . 6g ° D. I N STR U M ENT #202200005001 w LLJ ' -zz- ` _ _ /� V ___ � I -�-� I o ��� � -_,-- � .,-" a ,l' � :ii \ 2. GREEN WAY EASEMENT _L9 -------- _ �� �. v> - L,_ �, �,� ,� �, r - 3_A ��� - ��- z- SWM EASEMENT x---- /1 A �. YV ��.. 3. zo'UTILITY EASEMENT (PUBLIC) 06 - -/ H� -� `" - // ° \ \ i� 4. zo' DRAINAGE EASEMENT(PUBLIC) Q �'• a ° m ° o A — ` o - � eVDOTSTANDARD•ROU�UTPROPOSED, A V A 4'q /,r , �20' UTILITY EASEMENT(PRIVATE) - - -' s o� ° ®` ° ° ° ° / \ �' WITH T PLEASANT GREEN PHASE I ROAD / _ Z N I ° _ — \ ° o—� �° ° ° °� ° o ° ° a o� \ \ k \-j� P 56-115� 6. zo' DRAINAGE EASEMENT (PRIVATE) ° S ® ` \ HE&UTILITYPLAN-SUB-zoig-0007i i�i / V ALTY _77 U ` ____---_ \`Op� _ -� �\•'.° ��I / `,\,� ,/iNERSELLC`- °�-_,--- 1 _ '� ° ®( �\ . /� �i / DB 48 G 5 EXISTING CONDITIONS LEGEND -�� ___ ZONING: w A. PROPOSED UNDER PLEASANT GREEN PHASE "__-\ — — _ ' \ _ \\ ° ROAD &UTILITY PLAN (SUB-2029-00072) z / w- r✓ --- _ -. `- - - ------ s� \\ _ — — _ \\ \° \ �� ° °�, k\ l \ 1�,�� / B. PROPOSED UNDER PLEASANT GREEN V EfiREALTT- _ v ` A �¢ A ,i i \ i \. 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SANITARY SEWER SYSTEM B W DRAINAGE - r / A ��AAA,\A A, V�,V `�`V� 0•°... - �O O / V� OVA I °° f��� - _ 22. STORM SEWER SYSTEM /-�I 1[.GRAPH S 23. GRADING w CULVERTLn 2 I 60 30 60 120 JOB NO. WATERSOURCE STREAM 1821J�4 \ \\\`` \\ \ \\\ - -J I ° 2 . 2oo'STREAMBUFFER ' ( N FE:, i 26. FEMA2ooYRFLOODPLAIN SCALE I 1 inch 60 R ` , `\�-� r -, , , _o _ - r ° I �� 7 1 = 60 �� 28. LIMITS OF FEMA FLOODWAY ---_' ------ SHEET NO. \ — ✓ __ - ° 2g. LIMITS OF SUNNY DAY DAMBREACH ° , ! Line Table Curve Table ADJACENT PROPERTY OWNERS INFORMATION j /� ------ Line # Length Direction Line # Length Direction Curve # Length Radius Delta 9 9 9 TAX MAP PARCEL --- - _ - \ '+ f----- -- ---------___ \ La zo5.5a6 N10°24'30.7o"E L36 ugOWNER ZONING ACREAGE D.B./PG.8. o 534°36'y6.15"E C1 146.799 17z.000 048.9008 NUMBER Lz 57.777 N25°26'2457"E L37 87.76o S08o13'12.85"W Ca 352.277 228.00o 088.S262 A 56A1-05-00-000AO STANLEY MARTIN COMPANIES, LLC R-6 4.24AC 5226/309 ------__ = --------- --- L3 30.010 564'33'3543"E L38 82.333 527°04'03.15'E C3 19.971 12.50o 091.5406 B 56A1-01-00-030A0 STANLEY MARTIN COMPANIES,LLC R-6 0.50AC 5226/309 L4 27.002 518-38'o6.671W Lag 1o5.230 554°41'3736"W C4 42.o52 200.500 012.0170 C 05600-00-00-11500 VUE REALTY PARTNERS, LLC R-6 21.85AC 4856/582 -----_ '��_✓ - ' LS 27.o11 NS8°29'14.98"E Lqo 16o.000 N65°24'o9.64"W CS 225.685 3o6.Soo 042.1886 D 055CO-03-00-00060 CROZET CROSSING COMMUNITY R-6 4.18AC 2228/122 // ----\\ 11 ` y-i/ \ \ __-------- I\ ----- _____ L6 49000 N75°23'11.48"E L41 Ro.16o N68°59'oz.64"W C6 13.883 333500 002.3851 E 055CO-03-00-01700 MORGAN, TERESA R-6 0.28AC 1407/560- L7 5790 N24°36'48.52"W Lyz 256.839 N63°20'20.64"W C7 15.ug 23.500 036.8852 F 055C0-03-00-01800 GUYTON, JASON RYON R-6 0.28AC 4002/047 \ --- G 055CO-03-00-01900 RICHARSON, ELLEN M OR ROBERT M R-6 0.27 AC 3472/007 - - - LB 9773 Nob°31'ozz6"W L43 5z.001 N63°20'20.64"W CB 133345 25o.5o0 030.4995 H 055CO-03-00-02000 SALISBURY BONNIE R-6 0.27AC 1444/206 /' - ' 1 __�__--- ---- - - -- L9 59.236 N04°54'39.11"W L44 3345 N67o 43'z1.58"W C9 So.o43 Sz4.5oo oo5.y667 r _ _ _-_-_ / 055CO-03-00-02100 RASCLE, SERGE OR PENNY CHANG R-6 0.30 AC 3392/158 - - \ - - - - , L10 19.805 N25°29'25.8o"E L45 282483 N61°42'37.81"W CIO 17.510 12.5oo 080.26o8 � - � �\\ \ \ \ ♦ \ - � - - - - - - - - - - - - - J 055CO-03-00-02200 CROMER, SHIRLEY H R-6 0.29AC 1337/295 ❑ \ \ \ \ ' Lss 16.426 N25°29'25.8o"E L46 So.ozo N56056'39.64°W Caa 31.864 225.5oo oo8.o962 ---------------- -_ L12 77 486 551° 23' 59 03"E L47 226 Boo N54° S3' 37 64'W C12 13.612 485 5o0 001.6o64 K 055CO-03-00-02300 GREENLEE, CLYDEV OR CARRIE L R-6 0.30AC 1352/322 -- --- _ - No. 35791 ,, 9/22/22ArjrwR Gl ZONAL E� L 055CO-03-00-02400 MARSHALL, NANCY H OR REBECCA E R-6 0.27AC 4388/295 --- _ _---------- La3 43130 538°38'26.03°E L48 ssg.g85 538°36'yy.36"W C13 36.z38 47.500 043.7117 M 055CO-03-00-02500 BRADLEY, BONNIE LEE R-6 0.27AC 1383/377,- L14 29.440 521°02'07.03°E L49 1o.667 N490 55'So.WW C14 39.188 577500 039.0488 N 055CO-03-00-02600 WOODSON, RUSSELL WILLIAM R-6 0.29AC 3488/513 \ / � 1 \ \ \ / ______________ -- ,___, L1S 13.810 521°02'07.03"E L5o So.021 541°5z'47.11'W C15 21-338 47.Soo 02s.738s O 055CO-03-00-02700 THACKER, JAMES E OR BERNICE E R-6 0.24AC 1870/153 r/ i \\ \\ II ` ___----- L16 42.98o S1a°51'z7.o3"E L51 IS1.783 S38°oo'S8.30"W C16 51.S76 482.SW oo6.1a45 P 055CO-03-00-02800 LEWIS, RVAA R-6 0.22AC 1330/202 L17 89.730 538°3T40.97"W Lyz 21.412 N45°25'44.29"E C27 8.232 84.Soo oo5581g Q OSSCO-03-00-02900 VONN, MICHAELE R-6 0.22AC 5023/422 / 1 i I \ -- _-------''� ---- /' '' ''_ - -I- L18 38.S20 So1°33'zg.o3"E L53 17z.3oo N45°o9'5z.z3"W C18 S7756 7zz.5oo 0045802 R 055CO-03-00-03000 LUECKE, ROBIN J R-6 0.31AC 3612/210 RAILROAD - T w w - - - - IST\NG- Lag 9.990 518°11'2S.o3°E L54 10o.000 N43°29'S2.23"W C19 46.991 1472.Soo 001.8285 S BUCKINGHAM BRANCH RAILROAD Lzo 51.209 518° 11' z5.o3"E L55 2033oo N42° 56' 5a.z3"W C20 287.432 3812.470 0043197 _ _ \ /' / / V / z f Lu 1o9.9S6 Sz9°y6'o5.78"E L56 5z.44o Nz5°59'z4-77"E Cn 68.451 17z.00o ozz8ozo EASEMENT LEGEND \ ,/ RA\CR�o ,/' i _ ' ❑ I PORTION OF EXISTING 6" DI WATERLINE AND k 0 ` \\ s`" / _ - / 1 ❑ I / , (STING BLOW -OFF TO BE REMOVED. EXISTING O N Lzz 34-249 S29°46'o5.76"E L57 72833 N44°15'26.84"W Czz 67795 228.000 017.0367 \ / / r Lai 36. 6 S 1° z'o1a "E L 8 1 . S o° zzo W Cz 1 A. D.B. 5264, PG. 297 \ ` / ,, - - - T \ .m VACANT SERVICES SHALL BE ABANDONED. 4 7 4 3 5 5 3353 3 55 4" 3 S5.089 7az.0u0 o1z.3o74 / ,' / � V R A CJ m v / / / VI �N _ w I LU B. D.B. 5537, PG. 745 V� Lzo 49.073 513°20'S459°E L59 113597 581°o8'az.o8"W C24 14.536 23.500 0354403 / \ / _ / �/' s\ C. D.B.1255, PG. 413 & D.B. i396, PG. 6g � \ ,, ,' \ _ - � 1\ / W ,'� / z a � Las 73.171 Sz5°55'ozg3"E L6o 7.87z N77°n'S6.41"E Cz5 187m n3.5oo o5o.n39 D. INSTRUMENT #202200005001-- \ / _ L26 136.090 Sz6°oY So.g"E L61 101.434 547°35'5381"E C26 20.440 23.Soo 049-8345 Lz7 175.1oo 546° 33' a8.z5"E L6z 8.083 Saz° zy' o6.1g"W Q7 7z.158 z75.5o0 015.0068 1. GREENWAY EASEMENT \ - - 2. SWM EASEMENT Lab 145 470 556° 32' 34.15' E L63 23389 547° 35' 53 81"E C28 34-510 268.Soo 007.3642 �, -/ \ I - ♦ i Lag 5°4o'53.85"E S67°E Cz9 z484 . ERT 4, ULV P' LEASANL643. 20 UTILITY EASEMENT (PUBLIC) L3o 8a.00 S71°641.z5°E L65 15374 S24o36'48.52"E C30 14.029 z35oo 034.2046 5. 20'UTILITY EASEMENT (PRIVATE) PLAN - SU L31 140.000 SSz°541g.15"E L66 27.000 S86°02'1g.o4°E C3a a52.86o 963.Soo 009.0900 6. 20' DRAINAGE EASEMENT (PRIVATE),/- / - Liz 169.000 542°30'30.15"E L67 1o5.428 N25°5g'24.77"E C32 32.624 23.Soo 0795415 L33 196.000 545°45'18n5"E L68 259.000 551°o4'5z.z3"E C33 4875 333Soo 000.8376 L34 235 000 537° 33' 38.15"E L69 516.o79 N45° 55' 55 49"E C34 180.767 3o6.5oo 0337919 '�\�� Y� i � ' / �` \ \ / `�' \ / \ \ _ / ' e _. _ L35 87.530 S82o zz'14�5"E Lzo 193.682 560°24'27.57"W / , a EXISTING CONDITIONS LEGEND -'❑ ,-,k/ '� \ / - \ >- I W I / / EXISTING CUL-DE-SAC / \ , \ �- e I , -, / I / TO BE REMOVED WITH PHASE IICONSTRUCTION A. 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Bo of 50 ,B zBo 400I ; TOTALING i6.99 acres IS NOT MODIFIED WITH THIS yp \ 182154 I AMENDMENT (WPO 202000053 AMENDMENT #1). \ SCALE - v I L� I I ❑❑ ( IN In�EL)ET ) I I I i I I ❑ I ❑ ❑�❑ ' n I \ \ \ / \ \ / \ SHEET NO. -- I 1 inch L 100 ft. ' , ' , , L ' J ll \ EROSION & SEDIMENT CONTROL EROSION CONTROL NOTES DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE 1992 3.38 MEASURES: 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE CONTROL MEASURES: PROJECT DESCRIPTION: PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY IS TO CONSTRUCT THE RESIDENTIAL HOMES AND THEIR CORRESPONDING INFRASTRUCTURE FOR FENCING AND ARMORING STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. EROSION AND SEDIMENT CONTROL MEASURES: PHASE ll & Ill OF THE PLEASANT GREEN DEVELOPMENT IN CROZET, VA. THIS PROJECT PROPOSES TO DISTURB 16.99 ac. OF LAND, IN ADDITION TO ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND IT IS ANTICIPATED THAT THE CONTRACTOR WILL USE A CONSTRUCTION ENTRANCE, THE 15.51 cc. ALREADY PERMITTED (13.15 cc. ONSITE + 2.36 cc. OFFSITE). THE PROJECT WILL BEGIN ITS CONSTRUCTION WITH THE PROPOSED HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE RIPRAP, OUTLET PROTECTION, DIVERSIONS, TWO SEDIMENT TRAPS, THREE ESC MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS ANTICIPATED TO BE IN THE FALL OF 2022. THE WORK IS ANTICIPATED TO BE THE FOLLOWING: VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR COMPLETED WITHIN 18 MONTHS AND TO CONCLUDE IN THE WINTER/SPRING OF 2023. THE CONVERSION OF THE TEMPORARY SEDIMENT BASINS TO 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. SEDIMENT BASINS, INLET PROTECTIONS, AND SILT FENCES TO CONTROL SURFACE PERMANENT SWM FACILITIES MAY OCCUR AT A LATER DATE IF PHASE Ill's CONSTRUCTION OCCURS DURING THIS TIME FRAME. 301 SAFETY FENCE- J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL EXISTING SITE CONDITIONS.• A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION 4. AS THE FIRST STEP IN CLEARING. A COPY OF 774E APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE LAND DISTURBANCE ACTIVITIES. STOCKPILE LOCATIONS SHALL BE ON SITE AND 774E AREA OF THE PROPOSED DEVELOPMENT CONSISTS OF OPEN FIELDS AND EXISTING WOODS WITH LIGHT UNDERBRUSH. THIS SITE GENERALLY I CONTROL MEASURE BY THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE MAINTAINED ON THE SITE AT ALL TIMES SHALL BE STABILIZED WITH A TEMPORARY IEGETA77VE COVER. TEMPORARY SLOPES FROM THE NORTH TO POWELLS CREEK LOCATED ALONG THE WESTERN PROPERTY LINE. THE SITE IS GENERALLY GENTLY SLOPED AND IS OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR STOCKPILE AREAS THAT ARE USED FOR STORING SOIL UNTIL A LATER TIME FOR SPREADING WILL REQUIRE MAINTENANCE & SHALL BE SURROUNDED BY SILT WELL DRAINED. ADJACENT AREAS: I DRIP LINE I IiIiii I WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION FENCE AT ALL TIMES. PERMANENT SEEDING WILL BE PERFORMED FOR ALL THIS S17E IS BORDERED ON THE EAST BY RAILROAD TRACKS AND EXISTING RESIDENTIAL DEVELOPMENT. POWELLS CREEKS EXISTS TO THE WEST. 3.02 CONSTRUCTION ENTRANCE: CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN THE EXISTING PHASE I PLEASANT GREEN DEVELOPMENT EXISTS TO THE SOUTH AND EAST. SILT FENCE WITH WIRE BACKING, DIVERSIONS, SEDIMENT A STABILIZED GRAVEL CONSTRUCTION ENTRANCE LOCATED AT POINTS OF APPROVING AUTHORITY. AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION TRAPS, SEDIMENT BASINS, INLET CONTROLS, AND VARIOUS 07HER ESC MEASURES ARE PROPOSED TO LIMIT THE POTENTIAL FOR CONTAMINA77ON I VEHICULAR INGRESS AND EGRESS ON A CONSMUC770N SITE TO REDUCE THE 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADD177ONAL EROSION ACTIVITIES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR OF THESE ADJACENT PROPERTIES AND WATERWAYS. SNOW FENCE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTA77ON AS ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FORA YEAR OR MORE. OFFSATE LAND DISTURBANCE, I VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO 7. DETERMINED BY THE PLAN APPROVING AUTHORITY. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. OFFSATE LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT-OF-WAY AND AREAS LOCATED WITHIN THE OVERALL PLEASANT GREEN BOUNDARY. PUBLIC ROADWAYS. AT ALL TIMES DURING LAND DISTURBING AC771477ES AND DURING S17E DEVELOPMENT TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL SOILS.- UN77L FINAL STABILIZA7ON IS ACHIEVED. BE LEFT DORMANT FOR MORE THAN SEVEN DAYS THESE AREAS SHALL BE SEE SOIL DESCRIP77ONS ON THIS PAGE AND THE PHASE I EROSION & SEDIMENT CONTROL PLAN FOR BOUNDARIES, SOIL TYPES AND GENERAL SOIL ON 00 3.03 CONSTRUCTION ROAD STABILlZA770N: &DURING DEWA7ERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED DETAILS. �"" THE TEMPORARY STABILIZA7ON OF ACCESS ROADS, SUBDIVISION ROADS, FILTERING DEVICE. SEEDED WITH FAST GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING CRITICAL AREAS: I PON PARKING AREAS, AND OTHER SITE VEHICLE 7RANSPORT4770N ROUTES W17H 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY OF THOSE AREAS. SELECTI0N OF SEED MIXTURE WILL DEPEND ON THE TIME OF POWELLS CREEK AND ITS IMMEDIATELY ADJACENT WETLANDS ARE LOCATED ON THE PROPERTY. THESE ARE LOCATED DOWNIGRADIENT FROM THE •011 so STONE IMMEDIATELY AFTER GRADING TO REDUCE EROSION OF TEMPORARY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS YEAR APPLIED. PROPOSED DEVELOPMENT AND ARE CONSIDERED CRI77CALLY SENSITIVE AREAS. THE EXISTING ADJACENT RESIDENTAL LOTS, THE RAILROAD BOARD FENCE IIIII ROADBEDS BY CONS7RUC770N TRAFFIC DURING WET WEATHER AND TO REDUCE OR CLEANUP TO MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES TRACKS/PROPERTY AND THE EXIS77NG ONS17E STRUCTURES PROPOSED TO REMAIN WITH PHASE ll DEVELOPMENT ARE ALSO CRITICAL AREAS. THE 'AaM ON EROSION AND SUBSEQUENT REGARDING OF PERMANENT ROADBEDS BETWEEN SHALL BE MADE IMMEDIATELY. CONTRACTOR SHALL GIVE EXTRA ATTENT70N AND CAU77ON IN AND AROUND THESE CRI77CAL AREAS TO ENSURE SEDIMENT IS NOT DEPOS17ED ON CORD FENCE THE 77ME OF INITIAL GRADING AND FINAL STABILIZATION. USE WHEREVER 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. J.01 SAFETY FENCE - SAFETY FENCE IS PROPOSED AROUND THE SEDIMENT STONE -BASE ROADS OR PARKING AREAS ARE CONSTRUCTED, WHETHER 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL BASINS AND SEDIMENT TRAPS THEM. 7REE PROTEC7ON FENCING, SILT FENCING, DIVERSIONS AND SEDIMENT TRAPPING DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP IN PlarnC FENCE PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTON TRAFFIC SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND LAND DISTURBANCE TO ENSURE THESE CRITICAL AREAS ARE MAINTAINED. OTHER DEBRIS. 3.02 CONSTRUCT70N ENTRANCE - TO REDUCE THE AMOUNT OF MUD SEQUENCE OF CONSTRUCTION: CORRECT METHODS OF TREE FENCING 305 SILT FENCE., 12. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLE77ON TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO SCHEDULE A A TEMPORARY SEDIMENT BARRIER CONSlS77NG OF A S)N7HE77C FILTER FABRIC PER ZONING ORDINANCE SEC77ON 5.1.28. 303 CONSTRUCTION ROAD STABILIZATION - TO REDUCE THE EROSION OF PRE-CONS7RUC710N MEETING. STRETCHED ACROSS AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, 13. ALL INERT MATERIALS SHALL BE 7RANSPORTED IN COMPLIANCE WITH SEC77ON 13-301 TEMPORARY ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE 2• PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PR07ECT70N FENCING SHALL BE INSTALLED. , TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED OF THE CODE OF ALBEMARLE. J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONS7RUC770N PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR ON ;y` / AREAS DURING CONSMUC77ON OPERA7ONS IN ORDER TO PREVENT SEDIMENT 14. BORROW, FILL OR WASTE AC77WTY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT EROSION AND SUBSEQUENT REGARDING OF PERMANENT ROADBEDS BETWEEN THE THE PROJECT. VI II FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS SHALL BE LIMI7ED TO THE HOURS OF 7:00 AM TO 9: 00 PM. 77ME OF 1NI77AL GRADING AND FINAL STABILIZATION. CONSTRUCTION ROAD 4, INSTALLATION OF THE PROPOSED CONSTRUCTON ENTRANCE AND ADJACENT SEDIMENT TRAP A' SHALL OCCUR NEXT. THE CONTRACTOR SHALL AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS 15. BORROW, FILL OR WASTE AC77WTY SHALL BE CONDUCTED IN A SAFE MANNER THAT STABILIZATION WILL BE APPLIED TO THE CONTRACTOR PARKING &STAG/NG APPLY C0NS7RUC770N ROAD STABILlZA770N AS NEEDED TO THE CONS7RUC770N ENTRANCE AND CONTRACTOR PARKING STAGING AREA. SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS AND DAMAGE TO ANY AREAS AS NEEDED. CONTRACTOR SHALL ENSURE THE CONSTRUC7ON ENTRANCE DRAINS TO AN ADEQUATE E&S MEASURE, AS SHOWN. CONS7RUCTION ENTRANCE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 3 TO BE INSTALLED WHERE C0NS7RUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE ACCORDANCE WITH THE VIRGINIA EROSION &SEDIMENT CONTROL HANDBOOK 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL MAINTAIN REMOVE OR 307 STORM DRAIN INLET PROTECTION- STORM GRAIN INLET PROTECTION IS TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD (VEHICULAR) (VESCH). CONVERT TO PERMANENT STORMWA7ER MANAGEMENT FACILITIES WHERE APPLICABLE SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SHOWN ON THE PLANS WHEN INLETS ARE CONSTRUCTED BUT THEIR SITE's SHOVELING OR SWEEPING AND TRANSPOR77NG TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER - IA l\00 3.07 STORM DRAIN INLET PROTECTION: SALE OF ANY LOT, UNIT, BUILDING OR 07HER PORTION OF THE PROPERTY. CONTRIBUTING DRAINAGE AREA IS S77LL BEING STABILIZED. SEDIMENT IS REMOVED IN THIS MANNER. so IIEMNo A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING 3.11 TEMPORARY RIGHT OF WAY DIVERSION- A RIGHT-OF-WAY DIVERSION IS 5. THE /N177AL ESC CONSMUC770N MEASURES, AS SHOWN ON THE PHASE I EROSION & SEDIMENT CONTROL PLAN, SHALL BE INSTALLED NEXT. ~ DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO THE CONTRACTOR SHALL BEGIN BY INSTALLING THE PERIMETER SILT FENCE AND 7REE PR07EC770N. PERIMETER MEASURES INTENDED TO TRAP so CORRECT TRUNK ARMORING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATON OF THE CONSIST A 50/50 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH PROPOSED ACROSS THE CONSTRUCTION ENTRANCE, WHERE SHOWN ON THE SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE AC77VITY AND SHALL BE MADE FUNCTIONAL BEFORE 00 go DISTURBED AREA. INLET PR07EC77ON APPLIES WHERE STORM DRAIN INLETS AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF PLANS. UPSLOPE LAND DISTURBANCE TAKES PLACE. TRIANGULAR BOARD FENCE ARE TO BE MADE OPERA77ONAL BEFORE PERMANENT STABILIZATION OF THE GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF. ALTERNA77VES 312 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE 6. ONCE THE PERIMETER EROSION CONTROL SILT FENCE AND TREE PR07ECT70N HAVE BEEN INSTALLED AND SEDIMENT TRAP A' INSTALLED WITH CORRESPONDING DISTURBED DRAINAGE AREA. ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR. PLANS. THE CONSTRUC7ON ENTRANCE, AND THE COUNTY INSPECTOR HAS APPROVED THESE MEASURES, LIGHT CLEARING AND LAND DISTURBANCE 3.11 TEMPORARY RIGHT-OF-WAY DIVERSION: 18. PERMANENT STABILIZA7ON SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICUL77JRAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBSII000SF, J.13 SEDIMENT TRAP- TWO SEDIMENT TRAPS ARE PROPOSED. MAY BEGIN FOR THE REMAINING PER/METER CONTROLS THE CONTRACTOR SHALL BEGIN WITH THE /NSTALLA770N OF SEDIMENT BASINS B; 'C; 'E, Source: Va. DSWC Plate 3.38-2 A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FER77LIZER SHALL BE APPLIED J. 14 SEDIMENT BASIN- THREE SEDIMENT BASINS ARE PROPOSED. D', AND SHOWN ON THE PHASE I ESC PLAN. FOLLOWING THE INSTALLA77ON OF THESE MEASURES, THE CONTRACTOR SHALL INSTALL THEIR 1992 3.02 ACROSS DISTURBED RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT CONTRIBU77NG DIVERSIONS AND ANY REMAINING SILT FENCE. FOLLOWING THIS, THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION SHORTEN THE FLOW LENGTH 1417HIN A SLOPING RIGHT-OF-WAY, THEREBY SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 J. OUTLET PR07ECT10N-OUTLET PR07EC770N IS PROPOSED AT THE OUTLET OF CONTROL ITEMS AS SHOWN ON THE PHASE I EROSION CONTROL PLAN. TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL REDUCING THE EROSION POTENTIAL DIVERTING STORM RUNOFF TO A OR TALL AND OR SLAW THE SEDIMENT BASIN. SEE THE ESC PLAN FOR THE DESIGN LOCA170N. BE IMPLEMENTED AS REQUIRED. STABILIZED OUTLET. GENERALLY, EARTHEN DIVERSIONS ARE APPLICABLE WHERE MULCH ISFTOOUE BE APPLIED5ATPERENNIAL 80L S/100SF.GRASS ALTERNATIVES AREYSUBJECT TO J.19 RIPRAP- RIPRAP IS PROPOSED AT THE OUTLET OF THE SEDIMENT BASIN. 7 ONCE ALL THE PHASE I EROSION CONTROL ITEMS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE IS PROPERLY CONVEYED TO THESE STONE CONSTRUCTION ENTRANCE THERE WILL LITTLE NO CONSTRUCTION TRAFFIC WITHIN 774E APPROVAL BY THE EROSION CONTROL INSPECTOR. J. 32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CONTRACTOR CAN BEGIN CLEARING THE REMAINDER OF THE SITE RE RIGHT-OF-WAY. GRAVEELL STRUCTURES AARE MORE APPLICABLE TO ROADS AND 19. MAINTENANCE., ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH 8. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN BEGIN ROUGH GRADING THE SITE TO THE CONTOURS SHOWN ON THE PHASE OTHER RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR TRAFFIC RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE WITH THIS PLAN. lI EROSION & SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET 338 TREE PRESERVA770N AND PROTECTION- TREE PROTECTION IS PROPOSED DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. ADDl770NALL Y, THE 70' MIN. EXISTING PAVEMENT 3.12 DIVERSION: STORAGE VOLUME IS FILLED WITH SEDIMENT ALL SEEDED AREAS ARE TO BE WITH THIS PLAN. SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS PREVIOUSLY INSTALLED SEDIMENT BASINS 8' 'C', D', AND 'E', AND SEDIMENT TRAP A' AND PERIMETER DIVERSIONS SHALL REMAIN A ' _5:1 A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPOR77NG EARTHEN RIDGE ON THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND J. DUST CON7ROL-DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS OPERA77ONAL AT ALL TIMES THROUGHOUT CONSTRUCTION AND SHALL BE MAINTAINED THROUGHOUT THEIR LIFE CYCLES. THIS WILL CON77NUE AND DIVERT STORMWA TER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE DIVERSION DYKES WHICH ARE COLLEC77NG SEDIMENT TO HALF THEIR HEIGHT MUST BE PLAN. TO OCCUR IN EROSION & SEDIMENT CONTROL PHASE ll. FILTER CLOTH NDUNTnBLE KERN VELOCITIES. APPLIES WHERE RUNOFF FROM AREAS OF HIGHER ELEVA77ON MAY CLEANED AND REPAIRED IMMEDIATELY. 9. PERMANENT OR TEMPORARY SOIL STABILIZA 77ON SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS 6 MIR, A OPTIONAL) DAMAGE PROPERTY, CAUSE EROSION, OR INTERFERE WITH THE ESTABLISHMENT 20. ALL TEMPORARYNDSEDIMENTCOMOL MEASURESARE TO BEREMOVED MAINTENANCE. " REACHED ON ANY POR77ON OF THE SITE. TEMPORARY SOIL STABILIZAT70N SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT SIDE ELEVATION OF VEGETA77ON ON LOWER AREAS, WHERE SURFACE AND/OR SHALLOWMAY WTHIN 30DAYS OF FINAL S STABILIZATION, NO LONGER NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR. IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL T BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. ExlsT1NG GRDulln LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS 21. THE E&S INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS AS NECESSARY IN THE FIELD AS SITE COND1710NS CHANGE. IN ADDITION, NO SEDIMENT CHECK ALL EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH 10. ONCE THE SITE IS GRADED, ALL PHASE It EROSION CONTROL ITEMS HAVE BEEN INSTALLED &ARE OPERATIONAL, DRAINAGE IS PROPERLY 70' MIN. BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AUTHORlZA770N. SIGNIFICANT RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF CONVEYED TO THESE MEASURES AND THE ESC INSPECTOR HAS GRANTED APPROVAL THE CONTRACTOR CAN PROCEED WITH THE PHASE N 3.13 TEMPORARY SEDIMENT TRAP. NEEDED. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS.' ESC PLAN. THE INSPECTOR SHALL APPROVE THE CONVERSION OF SEDIMENT BASIN E' TO SEDIMENT TRAP E'. 10' MIN. Bii A TEMPORARY PONDING AREA FORMED BY CONS7RUC77NG AN EARTHEN SOIL DESCRIPTION a. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN 11• THE CONTRACTOR SHALL BEGIN INSTALLA77ON OF THE U77L1T7£S, CURB AND GUTTER, WALLS, AND ROADS INLET PR07EC77ON SHALL BE ) � EMBANKMENT WITH A STONE OUTLET TO DETAIN SEDIMENT -LADEN RUNOFF ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. INSTALLED ON ALL INLETS IMMEDIATELY FOLLOWING THEIR CONSTRUCTION. THE INLET PR07EC77ONS SHALL BE INSPECTED AFTER EACH FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE 78- BRADDOCK LOAM-2 TO 79 SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF b.ALL GRAVEL OUTLETS WILL BE CHECKE REGU ARL FOR SEDIMENT UILDUP D L Y B RAINFALL EVENT AND REPAIRS SHALL MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED WITH SEDIMENT SO THAT IT NO ]D'MIN. CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0 8" THICK. THE THAT WILL PREVENT PROPER DRAINAGE. IF 174E GRAVEL IS CLOGGED BY LONGER ADEQUATELY PERFORMS l75 FUNCTION THE STONE MUST BE PULLED AWAY AND CLEANED AND OR REPLACED. N / r MIN." � EXISTING TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAYBE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80". SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE 12. ONCE PROPOSED CONSTRUCTION IS COMPLETE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN PAVEMENT CONSTRUCTED EITHER INDEPENDENTLY OR IN CON✓UNC77ON WITH A TEMPORARY REPLACED. REMOVE THE EROSION & SEDIMENT CONTROL MEASURES. FINAL 77MING DETAILS ARE TO BE COORDINATED BETWEEN THE CONTRACTOR AND , , , DIVERSION DIKE. 8C3- BRADDOCK LOAM, 7-159, SLOPES, ERODED. SOIL IS VERY DEEP, WELL DRAINED, AND c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING THE INSPECTOR FOR THE CONVERSION OF THE SEDIMENT BASINS TO PERMANENT SWM FACILITIES NO 17EM SHALL BE REMOVED, MODERATELY PERMEABLE. SURFACE LAYER Is TYPICALLY LOAM AND Aeour D-e" THICK. OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT THROUGHOUT ALL PHASES OF CONSTRUC770N, UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PRIOR PERMISSION. v00T «) POSITIVE DRAINAGE D' MIN. 314 TEMPORARY SEDIMENT BASIN. THE DEPTH To THE WATER TABLE IS GENERALLY MORE THAN 80". SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSl770N REACHED 13. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL COURSE AGGREGATE O SEDIMENT B TRAPPING DEVICE A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWA7ER RELEASE HALF WAY TO THE TOP OF THE BARRIER. HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE W17N THE VIRGINIA EROSION AND I STRUCTURE FORMED BY CONS7RUC77NG AN EMBANKMENT OF COMPACTED SOIL 17 - - CRAlGS14LLE LOAM-0 TO 29 SLOPES. SOIL IS WELL DRAINED WITH A VERY LOW RUNOFF d.ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD SEDIMENT CONTROL HANDBOOK. . MOST EXTEND FULL WIDTH OF INGRESS AND EGRESS PLAN VIEW TO DETAIL RUNOFF FROM ACROSS A DREAS SURFACE LAYER Is TYPICALLY LOAM AND ABOUT 0-8" THICK THE STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS 14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZA7ON OR OPERATION IN "K "STORAGESEDIMENT-LADEN LONG DISTURBED AREAS IN "WENT AND FRY" STORAGE LONG ENOUGH FOR THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80". DEPTH THE. NEEDED. AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED 258- DYKE SILT LOAM-2 TO 79 SLOPES. SOIL /S WELL DRAINED WITH A MEDIUM RUNOFF /N CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE 774E TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY 12' MIN. - WHERE THE TOTAL DRAINAGE AREA /S EQUAL CLASSIFICATION. SURFACE LAYER IS TYPICALLY SILT LOAM AND ABOUT 0-8" THICK. RLD OR CONTRACTOR ON -SITE THE CONTRACTOR AT THIS TIME /S DIGS BROOK STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION GREAS GREATER THAN THREE ACRES THERE MUST BE SUFFICIENT SPACE AND ES. THERE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY THE DEPTH TO THE WATER TABLE lS GENERALLY MORE THAN 80". WOOD WITH DIGS MAY BE REACHED AT (434) 978-4435. IN ADD177ON THE ��' IMPOUNDMENT OWNER MAY BE CONTACTED. UPON COMPLE77ON OF THE PROJECT, 774E OWNER . 36D- HAYESVILLE LOAM-15 TO 259, SLOPES. SOIL IS WELL DRAINED WITH A HIGH RUNOFF WILL BE RESPONSIBLE FOR SITE MAINTENANCE. 318 OUTLET PROTECTION: CLASSIFICATION.ACE LAYER LOAM AND 0-7" THICK. THE LITER CLOTN� SECTION A -A STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPA77NG OTWATER S GENERALLYTYPICALLYOABOUT 1 SET POSTS AND EXCAVATE A 4'X4" 2 STAPLE WIRE FENCING TO I _. _ I DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT TO PREVENT SCOUR AT STORMWA TER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTEN77AL FOR DOWNSTREAM EROSION BY http://websoilsurvey.nres.usda.gov/appIWebSoilSurveyuspx REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS• TABLE 3.31.8 J. 19 RIPRAP: ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, -QUICK REFERENCE FOR ALL REGIONS' ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO - PR07ECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF Rate SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE Plan+ 2Pates• atssgadtl.c7T s .5psciea ms. acre P07EN77AL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS USE WHEREVER SOIL AND WATER GENERAL SLOPE (3:1 OR LESS)_ PER ACRE Sept. I - Feb. 15 50/50 Mix of INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, Annual Ryegrass EXPECTED VEGETA77VE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE KENTUCKY 31 FESCUE 128 Les. (LOU=multi-OMOD) UNDER THE DESIGN FLOW CONDITIONS. RED TOP GRASS 2 LBS. so -too Cereal ( Wreale Rye SEASONAL NURSE CROP 20 LBS. (Secafe cereale - ) 331 TEMPORARY SEEDING' 150 LBS. THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED SEASONAL NURSE CROP Feb. 1fi-Apr. 30 Annual Ryegrass 60-100 AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO (LQIWmmulti-flonw) REDUCE EROSION AND SEDIMENTA77ON BY STABILIZING DISTURBED AREAS THAT FEBRUARY 16 THROUGH APRIL ANNUAL - - WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 MAY 1 THROUGH AUGUST 15 FOxTAIL MILLET DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR AUGUST 16 THROUGH OCTOBER ANNUAL May l - Aug 31 German Millet 50 OFF-S17E AREAS, AND TO PROVIDE PR07EC77ON TO BARE SOILS EXPOSED NOVEMBER THROUGH FEBRUARY 15 WINTER (5QhRiaiWica) DURING CONS7RUC770N UN77L PERMANENT VEGETA7ION OR OTHER EROSION NOTES: CONTROL MEASURES CAN BE ESTABLISHED. 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS 3.32 PERMANENT STAB/LIZA770N: AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. THE ESTABLISHMENT OF PERENNIAL VEGETA77VE COVER ON DISTURBED AREAS BY PLAN77NG SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED FROM DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. MANNER THAT IS ECONOMICAL, ADAPTABLE TO S17E CONDITIONS, AND ALLOWS PERMANENT SEEDING SCHEDULE SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE pS WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF NO SCALE CONSMUC77ON ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & COVER. SEDIMENT CONTROL HANDBOOK, 3RD ED.) 318�EE PRESERVAON AND PROTECTION: PROTECT/ON OF DESIRABLE TREES FROM MECHANICAL OR 07HER INJURY DURING EROSION CONTROL NOTES LAND DISTURBING AND CONSMUC77ON ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETA77VE AND STRUCTURAL EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM POLLU77ON CONTROL, NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL DIS7URBING ACTIVITIES. REGULATIONS. ES-2. THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO THE 3.39 DUST CON7ROL: PRE-CONSTRUC7ON CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DISTURBING AC77WTY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. DEMOLITION AND CONSMUC77ON ACTIVITIES TO PREVENT SURFACE AND AIR ES-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE FIRST STEP IN CLEARING. PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL THE S17E AT ALL TIMES. MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF ES-5.-PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE WITH THE VESCH. CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. FMTEE FABRIC ENTRENCHED a• COMPACTED SOa �__ a' )MINIMUM ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADD177ONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE -=- I PLAN APPROVING AUTHORITY. I -- III =1I 1=1I I=11 -I� I -I -1- I-LL jL 1�1�=Ijj= -I - ES 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL ,or to. _ _ Tl it i 7l-T-11-r T� TU li-II�fi-l�TPi-Ti- 1-1 77MES DURING LAND DISTURBING AC77VI77ES AND DURING S17F DEVELOPMENT UN77L FINAL - I171 I-III-11., 11_„ I_ rl-IJ-III-I I1T - - rL rl STABILIZATON IS ACHIEVED. T Ti-II-11�I = I -Li 1---T- __ ES-8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER 11�' -- _ FILTERING DEVICE. a• �°M __ ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT ANY NECESSARY REPAIRS OR CLEANUP TO DD 'TEMPORARY 18" DIVERSION BERM MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMFnIA TFI Y TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Neule Gallons/Acre Anionic Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 125:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.51 Coarse Spray 350 Source: Va. DSWC 1992 SILT FENCE DROP INLET PROTECTION a , <• v000 FRANr LFIP mLET LAX M � ��� � II II V II II U PERSPECTIVE VIEWS ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATION DETAIL A THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. Source: N.C. Erosion and Sediment Control Pig and Desian Manual, 1988 TRENCH UPSLOPE ALONG 774E LINE THE POSTS. J. ATTACH THE FILTER FABRIC TO 4. BACKFILL AND COMPACT THE OF POSTS THE WIRE FENCE AND EXTEND EXCAVATED SOIL. IT INTO THE TRENCH. / __ JAG FLOW f 3.07 1992 II - - I11 ,, I i4�r_� SUPER SILT FENC (WITH WIRE -BACK GRAVEL CURB INLET SEDIMENT FILTER _1- (�'\�_ �� //� RUNOFF WATER WIRE MISS �sr i Ems. H.. J � J® • =111111i=t«��8t. - 3 -=Gi=sew IIIIII IIIII IIII��IIII� IIIII I SEDIMENT =1' NCRETE GUOMTR I'll 9 � \\'I-- CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. ' GRAVEL SHALL BE MOT k3, #357 OR 5 COARSE AGGREGATE. Plate 3.07-1 Source: Va. DSWC NO SCALE 3.07 1992 -1 11- EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. .05- TEMPORARY RIGHT-OF-WAY DIVERSIONS VDOT #1 COARSE AGGREGATE - lg• MIN. d B• MINIMUM TYPICAL GRAVEL STRUCTURE COMPACTED SOIL .. I FN 18' MIN B• MINIMUM I TYPICAL EARTHEN STRUCTURE Plate 3.07-6 Source: Va. DSWC Plate 3.11-1 RE SECTION B-B Source: Adapted from 1983 Maryland Standards for Soil Erosion and Sediment Control, and Va. DSWC "....,A -.-..._._.:-- --.-..-_.. e__ _____ --.-..I -I--- 70' MIN. I' _., . SM-2A ASPHALT TOP . __60URSE ]x 21< La- MIN. 21A AGGREGATE 946E PROFIL I 'JC'ICN �o ASPHALT PAVEDWASMWK Plate 3.02-1 EXISPNG 22 �2R PAVEWEn:- I27C 12' MWl t I Il -^ F POSITIVE DRNNAGE 'VUS7 EXTEND FULL WIDTH LJ � To SEDIMENT IINGRESS AND EGRESS -PERATION TRAPPING oC'VICC ELM 12' M114I1NE DRNNA(;t 71 TO SEDIMENT .INN•pINGyEVICE FILTER G.OTH� 111 tl N'dla lA/t C ILIIC L110al Ulth .111W IIMIIIMidi I�dlls�nl wwl use I t l ID 6 w M W I u Ot Baha tAh'uta wa.ihose lla t6meao I I A mcle.• lot adetwlL u u.tap plrs:Tne \ aa'11 wala um.t I e taHlell aWa} tl 111 IIIC a1t1.LItC t all .q)pfocell seNIM1_ area to Iauoce nefhluaut .411 Nellunalt '11d11 be fitrcaltnl Low entawR storm C6:Iw.N. ditches Of walacoulNe, PAVED WASH RACK No. 35791 112�_ 9/22/22�� ks R 1 I E 0 VIALo En rA F- LU V/ w X Zz O Q k F O a O2: N N E� W O a (n J � ON E1 4 aY Z O I- ULJ 0- 111111111111 cn z 0 > > w W LU W T■■N N N Q O, N r, M r W N 0 IM W Lj z _j J J � > U) L9 1 L_ O z < U WY in C. zLU w Of 17- t CO J~ LUOf 0 O O N U z W 2 0 J_ z Q W I1J 0 aw z> ^JQ ^ � 12L Of 0-Z `- CO Lr) � O I -A Z F--q �W Of O V / Q O 0- U ' LL] z2 W 0 Lu COIr..Vn 06 V O zCO Q of U) w LU /J/�� I..L I- w Out a U)) JOB NO. 182154 SCALE N/A SHEET NO. 5 No. 35791 9/22/2244 ,'^slnueT. E�C'l �P i / J / �3 rn / '• o / WASHOUT AREA s / �/ DRAINAGE DIVIDE (TYP.) LOCATION OF / ° ° // vv SOILTYPE v /���I��/�,/T. o a / PORTA-POTTIES Z / / / o `% / / LOCATION OF ROPOSED18' DIVERSION. \ / i \ ,. \ / �.5B � j' Ij `� O F O _ DD CONTRACTOR SHALL ENSURE I ° U 15 CY DUMPSTER- - #8 / E� / LIMITS OF DISTURBANCE APPROVED /' POSITIVE SLOPE IS MAINTAINED. U m - BERM SHALL BE STABILIZED AS !!�J / _ - - _ _ / / / \ L WITH WP0201g00003 / A FIRST STEP IN DISTURBANCE. ° I / I I L / \ \ ` _ - - - - - / i /\ \ O °' UCTION TRAFFIC SHALL \ / / / \ ` - - - - � �'r! x� \ \ z < w \ / / LOCATION OF / IP M — — , - \ 1••1 o r a R SITE ACCESS \ / / /'-FUELING AREA- - S6'p /('l� - - - - h TS \ / > Z c_n TS \ CULVERTTO / / / / / THE FUELING TANK SHALLIE COMPLETELY SURROUNDED BY / `\ + U� ST > / / A 2' DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL \ ° Lu EXISTING STRUCTURES TO BE REMOVED ° \ \ ��� �''F "`' _ .:--y / I W M — M BE REMOVED POLYETHYLENE LINING, OR BE PLACED IN AN IMPERVIOUS ' SF FT OPEN -TOP DUMPSTER WITH A SIDE DOOR. THE PROPOSED BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE EVENT OF v / ° A A v I A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IP 1o/a LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. \ \ / / \ SF _ LLI EXISTING CUL-DE-SAC / / / / / - - v / / / �Iwo I / v TO BE REMOVED J SANITARY SEWER LLl TO BE REMOVED / / / v / ° woo O / / / / PROP CONTRACTOR / /��/�/�/ CONTRACTOR SHALL ENSURE / XISTING ALLEY TO BE REMOVED TS POSITIVE SLOPE ISMAINTAINED./ / REGRADE SO THAT ROADSIDE / / / � ,�__ / / / DITCH OUTFALLS DIRECTLY / / / / / / / - - / / / / BERM SHALL BE STABILIZED AS / / IP VIA OVERLAND FLOW TO / / / / ` \ ' PROPOSED STOCKPILE AREA TO BE / / / A FIRST STEP IN DISTURBANCE. ENCOMPASSED BY SILT FENCE AT ALL TIMES / SEDIMENT BASIN C / / pp / / / / _ \ \ / ° / / / / IP 0 A N N REGRADE SO THAT ROADSIDE / / / '/ / . - 1 � / - / - - LOT o N N rl ON V / DITCH OUTFALLS DIRECTLY SOIL TYPE / / / / / ` / / '� \\ ° / / / / / / / I Ry A� fm 14 1 o / VIA OVERLAND FLOW TO / Q / 25B // /-� ♦ J/ z4RVA SEDIMENT BASIN C TREEY f' /41 DC I SOIL TYPE v �// \\ ♦� SF / // ///-- -- -- SF --- / �+ -� �� ♦ '� LOT o PHASE I DRAINAGE - / r \ ` AREATOSEDIMENT 713 ` // // DDLENGTH=6z5'/ / // // \\ ■ \\ , \ / / —/ ��� \ , / / —_ /16 _ CS) a BASIN C = 8.1z ACRES i — / / / / uj D.A.=2.28 ac., Tc=z1 min., / / / V _ v .. v / / / / . \� / i' — — I LOT �/ �_ — 1 \ z ° / . \ C-0.45, Q2 lr.l CfSi / \ ' % / i- r / — — I // LOT M o M 3 // /—— \ ��►' / I l / \ • x /j / J / / / LOT 00 m i T` PROPOSEb SAFETY FENCE, \ �' PHASE I DRAINAGE �j / / — / / / / / / / -7 / / INSTALL SIGNS "WARNING / / \ \\ \ \ EXISTING TREELINE (TYP.) O AREA TO SEDIMENT / / / / / / ` • ° �, QUICK SAND, KEEP OUT" SA`F BASIN D=6.05 ACRE — aj LOT Lu > 27 _ -- ' _ _ - _ _ ---�� PROPOSED 18" DIVERSION. I / / A v _ SOIL TYPE _ Z BM - - - CONTRACTOR SHALL ENSURE _ - -�� " % / �/ / - _ - / / \ - 73� SOILS LIN i / / / / i j / / / ^' LOT / / LOT O C' Q° / - \ POSITIVE SLOPE IS MAINTAINED. / / / I SOIL TYPE \ — SIF TP E (TYP.)/ / / / / — / / / / / / j �/ // ) \ , 1s / 36D �/ 19 N J BERM SHALL BE STABILIZED AS / LIMITS OF DISTURBANCE APPROVED / -- _ _ _ �� �A FIRST STEP IN DISTURBANCE. / I 8C3 \ \ / /_ / / WITH WPOzo1 0000 _� i 9 3 v D — —/�� EXISTING PLEASANT GREEN L20 Q J - PROPOSED BAFFLES 1 _ - - - - / r r TS / / / / / " O A 11 I / / / / / / �Q-�m / LOT ✓ > o PHASE I DEVELOPMENT 29 / / d� LOT .. LLI - - - - DID LENGTH=6 2' / i i / / / ° 3 i / / 7/ / .•' LOT / � / V /� ./ - J D.A.=3.62 ac., TC=12 Min., / / / / / // / 30 / / �/ �/ / / \ i _ o � z M O iC=0-45. Q2-6.2 CfS i �(� // / / LOT V A \ / / i - r , ° ------'�/ / \\ — ^\\ /--/ j/ /�i�� ��`/ice/ �� �/ ///// IP. / / / LOT 22 \\ \ O`e/".;' � � v c ¢ — / V / /� / / / �5 31 / LLI p _ PROPOSINE DOUTLETPLASSAI - PROPOSED 18"DIVERSION. i / / / / z3 \ / F- RI )RAP LINED OUTLET PROTECTION / / !~ --- — \ — -_ / / / ONTRACTOR SHALL ENSURE / / / // / - / LOT �. WITH FILTER FABRIC UNDERLAYMENT / / A — — - _ _ _ 24 s _ 'C / / / / / /,/ Bj 'q \ \ w o MIN L-8', Wz=q.S; Wz=1z.5', D=6") \ T / BERM POSITISHALL VE OBE STABILIZED PE IS AAS �V AFIRST STEP IN DISTURB �NCE. / / •�..'i, TEMUC, -_ ' // A - jLu °PORARILY BLOCKED DURING CONSTRTIOLEVEL SPREADER OU DIRECTING RUNOFF TO THE PRIMARYOUTFALL.'ix / / / / TP SOIL TYPE / \ \ TEMP. BLOCKAGE SHALL BE REMOVED ATTHE TIME _ — i / PROPOSED SAFETY FENC ,. TEMP, BLOCKAGE BASIN 's REMOVAL. DOWNSTREAM / / / A — — — 6D I:� +�' s I `� '( a / — _ _ 3 /� INSTALL SIGNS "WARNING PROPOSED OUTLET PROTECTION TO BE VDOT STD. / /// (TYP.), _ �1 — —� -- -- i-- /---- QUICKSAND, KEEPOUT"Q`gQ LASS AlRIPRAP WITH FILTER FABRIC \ LI�ST�ING 100' WPO BUFFER/ p, i1NDERLAYMENT (L=8', Wz=3', W2=9', D=zB") — - - s"- - — — / / .• rx 9 �.Luz / 0° n."...,.... � ►"ten �• /.n'•' \ E IP• w 1 ��v O SA — �— _ i O 0 � �� O i v �� ' / CD �- / / EXISTING WETLANDS /��° mano v� v ��O1 aj z m... (/ / _ — _O ti ✓ P � 1 y� 1 ✓'/ / / O O 0° I p O �O' V A v '� L T I— w SEE SHEET i8 FOR SF ' PROPOSED FLAT VDOT CL. Al RIPRAP LINED o - - - o o o 0 0 / �V p / v _ o L Lu Lu Z ° OUTLET PROTECTION WITH FILTER FABRIC p W Z z J / _ OUTFALL DETAILS o t1NDERLAYMENT L=28' W1= W2=12. D=18" o / FLOW DIRECTION ARROW (TYPJ j \ o ♦ /\ > o ( T, ) V LOT w / - - - / / / / \ \ � `o — o 0 0 0 0 ° o 0 o uj RE O / / / \� / / PROPOSED LIMITS OF DISTURBANCE (TYP.) \ \ ,,,\ 49 ~ w Z -- SEE SHEETS18&1gFOR _ /�� -- - �\ ( / v v v �", A u STURBANCE (TYP. A v / \ \ v ,...�� '�v, LOT C� U..� O ' - - - - - - LEVEL SPREADER DETAILS - - - �" / \ ..•"� \ 50 REE CLEARING (TYP.) COI L TYPE \ _ — — _ — — ` — — _ o \ \ J � 4. \ \ SF '• \ J �— = o PROPOSED OUTLET STD CLASS N \ \ r n — — — — — — 100-YR FLOODPLAN RIPRAP LINED OUTLET PROTECTION \ \ \ I \ / Nw v a 17 -�\ — — 1 \ I / WITH FILTER FABRIC UNDERLAYMENT / \ • \ I i \ \\ / /� / LL o \ ' c (MIN. L-B, WI-4.5', Wz as g, D 89... �s"•' \ I S L P / / / \, OP _ \ OI Y � PROPERTY LIMITS (TYP. / - ✓ / \ pJ !°� D \ \ / / / // / ° EXISTING STREAM , _ \ \ / v� / \ 1 / / n o �••.\ ONSYRjJ ION OF `rH LEVEL EAD R'D' 7 / / �Q >_ AND ITS OUTFALL SHALL OCCUR AT THE TIME / / // / / / v ° \ j� o \ \ �•a �� \ OF THE REMOVAL OF SEDIMENT BASIN'D'. / / / x / o o p / o / \ 0 0 0 0 �/ - OP I O TREE / O / /O O O \ \ o \ O o \ O O p \ J Off/€LLS OR - - - PR OSED L MIT F FARING (TYP.}-� ` \ THE OPENING IN STIR. D-1o2 FOR THIS PIPE - - / / ,,:' 0 o o / - o o o z - - o \ EEK \ ° \ SHALL BE TEMPORARILY BLOCKED DURING j O CV / /1 s 00 -- O° / �\ O° a O �/ O 0° \° j — _ \ �� O \ \ HE ESC PHASES. _ V / —��0 0 0 v \ �� off° ° owow \ / �/� — _ — _v�,�_ /--------- ---- — —v ( ��GI�APHICv�SCA ��, �° / v I i — — \D O/------- �1-1� \-------- ---1� \\ \ \� \\ \ \ O / \ I U ��-\--- ---- \ 40 \ \ 0 \20 40 80 160 \ \ — —/ I I I �H o//i i---\\ -1 `` `-�� \ \ --- �° SEE SHEET18FOR SF o \ \ © �II III ` - o w ( O O / / / i ' \ \ \ \ 'F / — ` / �J�f--,— - - - - -- -- - - - \ \ \ \ \ o OUTFALL DETAILS \ x o — — — _ \ \ \ I ° I SOIL TYPE —� //IN -FEET \� JOB NO. 17 o_ u] .� -- — / -- �F \\\ \` _ --- as _ _ A v v v t I v v 182154 ° -/----- - v �, ��, v vv\ \\ \\ \\ \\°OO A AV I A./ --- / X \\OA A 2ooYRFL DPLAINI I. L� / \ SCALE WRENN �� vvww vv II MATCHLINE - vov� {�/� oA 1„_40� I T° •"y T O , SHEET NO. SEE SHEET 12 °I 6 / �/ — /• �o SOIL TYPE,/ / 713 w mom ANON now moonsoft Nft aftftw am aft am 41111111111, aft 100, \ / o ♦ , \ / V L_ /'' f / 1 00 00 / \ PAIR o� 0 — � / / pP Paa / // \ / aft � / 000 / Z X / ;NOTE: NO CONSTRUCTION TRAFFIC SHALL 01 USE CLING LANE FOR SITE ACCESS i \ TS / \ M W `A ` ` w 1 W V / W // / // / L /% z / -- 0� �/ ♦ ♦jam y / V / � / / / v 100 Q PHASE I DRAINAGE AREA TOSEDIMENT RpPpsSR��s BASIN G=8.1zACRES / \// LN\G oR/- OJ,��yzza / �'/ // / , / /// / / S % / / / / D�— No. 35791 9/22/2244 .'SlOuei. E�Ol Z Z (] J Q r z w O O mN N Ln :3 n w -1 J rn Z Q n� �..� o r a- !lI z LU w .. LU N Lu c � N N ~ Im N rl rn SOIL TYPE �� - �� .PROPOSEb SAFETY FENCE, O v \ ' - - INSTALL SIGNS "WARNING / // t/� ' \ / / / // / / / S // / / 7B - - / / QUICK SAND, KEEP OUT" S / / / \ / /' i DRAINAGE DIVIDE (TYP.) 1 /' \ / / / / / / / �� / / l _7 co FLOW DIRECTION ARROW (TYP.) 00 / / I -- / S /�/ // // / v -�.i1 PR / \ / -� / \ / EXISTING MANAGED / - / / / \ / / / ♦ — / / / / / / - / / _ v A \ / STEEP SLOPES (TYP.) / // \ \ ♦ \ O// S.I/ / /�„ce/ /�-•/// // � / / \(/ // / � / / / / \_ - - - _ / / PROPOSED 18" DIVERSION. / / V / N \ / �/ / / / / S / / / CONTRACTOR SHALL ENSURE / / SB O / a- ' � ^ � � PROPOSED 18" DIVERSIO� - I / _ _� , ♦ / / POSITIVE SLOPE IS MAINTAINED. D / CONTRACTOR SHALL ENSURE ♦ / / / / / \� �� -' 7/ / / BERM SHALL BE STABILIZED AS / / \ ` ^ � ^ / / / / POSITIVE SLOPE ISMAINTAINED. i \ ' �/ / / -� / /\ PROPOS_ ED LIMITS OF DISTURBANCE (TYP. - - j' / / / / A FIRST STEP IN DISTURBANCE./ BERM SHALL BE STABILIZED AS- \ / ///' it // AFIRSTSTEP�NDI�TURBANCE. /� DD / / > TS/ ----/ �.. TS / / / / / / / - - / /1 / / Lu SOIL TYPE / J _ •'/// / // 713 / PHASE I DRAINAGE AREA TO SEDIMENT / — , — — / / / / / / / / / r / / i / XISTING TREELINE (TYP.) / / / / / / /' / / / / / / / / / — / U) / k / BASIN B = 4.96 ACRES/— — / / / / / \ / / /__75s _ ---/ / / W / PROPOSED 18" CLEAN WATER / / / / / - / ' - - - / / / / / / / / / / i' DIVERSION. CONTRACTOR _ _ _ _ / / _ _ /' O / PROPOSED VDOT STD. C ASS AI RPPRA LINED SHALL ENSURE POSITIVE SLOPE / - - - - - \ _ - / / / / / / / / / / / / OUTLET PROTECTION WITH FILTER FABRIC / W ' - IS MAINTAINED. BERM SHALL B UNDERLAYMENT(L=8', W1=3', Wz=g', D=18") - STABILIZED AS A FIRST STEP IN, - - _ DISTURBANCE. // / �/ /' ��---- -- /' �� . '. /-- / �30/ //ate SF/ - - -//�/ - // / Q DD LENGTH=369' / / / _ — — PHASE I DRAINAGE ! — %BM / / — / / / / ono / ( ) D.A.= zo ac. Tc=1z min. / S / / ' — — �� / 4 / // / ]AREATOSEDIMENT _-7as—' _ — /�W�!% / // ^n.�,.,.•. �� o C=0.45, Qz=].z cfs j / / / / / - _ - / \ \ ' / BASI N E= 4.83 ACRES - - - - , PROPOSED SAFETY FENCE, / ado / / Y PROPOSED VDOTSTD.CLASSAI i / / /' � , , �� _- -- / INSTALL SIGNS "WARNING / / / / _ / / / �� QUICKSAND, KEEP OUT' SAF / / / / eeY�/yD / / — — / \ / ( / RIPRAP LINED OUTLET PROTECTION / / / ' �/uj �/ / / / — ` ' / / / // /, / / / �� / O �" PROPOSED LIMITS OF DISTURBANCE (TYP. - / PR`ERTY LIMITS TYP. WITH FILTER FABRIC UNDERLAYMENT S / / / / i _ _ — — — - / — — — — — / (MIN. L ', W1=4-5, W2-1z. ' D=6") / / / / ' / — — — ' / / / / / / / / / ✓'a/ • / / / DO LENGTH 475'/ = ' ' — - / / / / A� / / / / PROPOSED LIMITS OF TREE CLEARING (TYP.) D.A.=2.3o ac., Tc=12min., i / / / T / / / / _ J V /� // // / // / e -- C=o.45iOz=3.93cfs/ // / q // / / / v / // /' _— E' / Lu EXISTING PRESERVED �kOPOSED SAFETY FENCE, / / / / / TS / / ,' _ — / / _ _ _ _ ' / SF O / W STEEP SLOPES (TYP.) INSTALL SIGNS "WARNING SAF / / / / / / / ' Z %� \ a3� / / o o/ / %" / QUICKSAND, KEEP OUT " / ' / � SOILTYPE�- / 8C3 / v v ti o� /✓ �� / / XISTING too' WPO BUFFER (TYP.) / — U) \ftftF PROPOSED 18" DIVERSION. _ / / / / / / RIPRAP LINED OUTLET PROTECTION \ , _ — / Cj" e / ' ` // 5� CONTRACTOR SHALL ENSURE — / / / / / ,I'�i WITH FILTER FABRIC UNDERLAYMENT�s„��• Lu-�/ \ /POSITIVE SLOPE IS MAINTAINED. / / / I „ems••-" (MIN. L=8', W1=4.5',W1=12.5', D=6") '��•• .,• / \ / I / (Y \ BERM SHALL BE STABILIZED AS \ o PROPOSED T STD. CLASS Al RIPRAP LINED ' ( / / S J x \ / IN DISTURBANCE. / / ROPOSED LIMITS OF DISTURBANCE (TYP.) _ // / OUTLET PROTECTION WITH FILTER FABRIC DD / / / / / - / o O O O o .coo U Q -/ \ OP UNDER LAYM ENT (L=8', W14, W2=9', D=i8") 0 ) oK _ / o ° o SB / / PROPOSED LIMITS OF TREE CLEARING (TYP \ / \ \ \ ° o O O �.,► — _ / / B I too -YEAR FLOODPLAIN TYP. \ N --/ PROPOSEDVDOTSTD.2LASSAIRIPRAPLINED ( ) GRAPHIC SCAL� ""^"^"^•-,'- EXISTING too' WPO BUFFER (TYP.) / / / UTLET PROTECTION WITH FILTER FABRIC J \ � 56 - _ \ \�" / / / / / / / OP UNDERLAYMENT(L=8', W1=3', Wz= ', D=18") / y� \40 0 20 40 so ieo / / \ \ , / / / LEVEL SPREADE*LAILJ u R OUTFACE PIPE SHALL BE TEMPORARILY ••`s" T O I O \ _\ S (�- O O O O O��—�p� ` V '� ,� / o / BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFF TO/ / / O " Q " � \ ' / / THE PRIMARY OUTFALL. TEMP. BLOCKAGE SHALL BE REMOVED p / e�_p_O O '00\ \ — ' / /5 / AT THE TIME OF THE TEf�1 P. BASIN's CONVERSION•"""�� / O O o 7 9 / % / ' �\ / ( IA)% /'/ / a v v v �A / / �,.•.'�� SEES ET 18 FOR o o " o/ F ,—_LEVEL SPREADER DETAILS / 40 _ _ EXISTING STREA o /, -'7 OUTFACE DETAILS o \ — // ��-,-'• ^-j 6- , n o / SOILSLINE(TYR) / / \ \ L 100-YEAR 91 w�, < S — / � ° _ / FLOODPLAIN (TYP.) / Dv ` s", —N\, A — — — — /r1.-L RO OSED LIMITS OF DISTURBANCE / /+ / / / / / / / / / \ _ PROPOSED LIMITS OF TREE CLEARING (TYP. 'ems i E (TYP.) — / / / SOIL TYPE - o��- . ,..ny..i• / / / o / C)P / + / - - - too-YR FLOODPLAIN` / / / 17 - - - I -_ `V",�• / / PROPOSED FLAT VDOT CL. Al RIPRAP LINED + ' / o / --O\ \^"""'�••.� / O OUTLET PROTECTION WITH FILTER FABRI - J / \ \ _ o O \�// I \ \ \ _\a \ "•�,r / 5 / / / / UNDERLAYMENT (L=15', W1=6' Wz=7.g', D=18") / p 9/ -- / ° / / ° C a > 3 zC Lu j 0 0 3 m z ° n Lu ° c o z0 Q o J za° a Q 0 o a J s z� m 0 ° ° U u) z 0 L W 3 uu Q U 0 W Lu ° V/ o c z > 0 ° ' ^ o lJ' o z w z w Z W w W Z Lu0 0 QU 2 > CL 0 n N X Vl w 0 Lu c m ,J E F U 0 a 1 w w d � o JOB NO. ° 182154 C SCALE ° 1"=40' 0 n SHEET NO. � 7 No. 35791 9/22/2244 .'SlOuei. E�Ol f SLOPES GREATER THAN 3:2 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF / \ \ ' ' I P �J J / / / / - - - 60 LBS. PER ACRE, OR z LB PER z,000 SF, UNLESS SPECIFIED OTHERWISE. J SF / - - - \ LLJ - / DRAINAGE DIVIDE (TYP. " — v / ' / �� / / /' IPROPOS Di8"DI RSION. /yy: Lu ' ' / / / / / \ CONTRACTOR SHALL ENSURE / - - TS POSITIVE SLOPE IS MAINTAINED./ 738 - - / / BERM SHALL BE STABILIZED AS PROPOSED STOCKPILE AREA TO BE / / <d / A FIRST STEP IN DISTURBANCE. / i ' % / ✓ / / / — — — 74 734 ��. ENCOMPASSED BY SILT FENCE AT ALL TIMES / / 730� DD 0 W N N LOTma PHASE II DRAINAGE // / / / .y / -- - % — — LOT z AREATO SEDIMENT / / / / / / \ v / / -- / — / ' v / i6 — C>7 / / — BASIN C=io.95ACRES / // / ��� // // \\ \\� \, \ // / �ry \ �' I Lo// LLJ uj o J 25 DC �-—�46--' / / ������ \ / /—/ // �, ' // �I I a I�� �\ 17 M 3 PHll �`"' iV / / / / / / ; .� LOT ' /� I �� A �� ROPOSED SAFETY FENCE, '/ \ \ / ♦ / / ' / / / z6 / / �, / / \ (V o INSTALL SIGNS "WA .—' / \ \ \ PHASE II DRAINAGE SAF / / / vv QUICK SAND, KEEP OUT" - , \ \ AREATOSEDIMENT // / // — — / / \ \ ----- BASIND=6-14ACRE5 ���, _ = ��f // / / /// ' / / / �o (l LOT //�h�1 Lo$ Luo / - _ _ PROPOSED 18" DIVERSION. / / / / / / / ( I / / CONTRACTOR SHALL ENSURE - // TP air— / / / / / F LOT //// / LOT - O Q Q e- POSITIVE SLOPE IS MAINTAINED. / / / I \ v SF / / / / / / / / ' / / �' / /' / ("�• a8 / / / �/ �/ �9 -I - BERM SHALL BE STABILIZED AS / / / / \ / LIMITS OF DISTURBANCE APPROVED / / // / A FIRST STEP IN DISTURBANCE. / I�� \ - a / / / WITH WPOzolgo0003 /' / / / EXISTING PLEASANT GREEN L J O LOT PHASE I DEVELOPMENT �; cl� LLj z ° _J LOT V A / m a LOT —a / zz vv a U / / / v v / / / ' _ PROPOSED VD07STD.CLASSAI - - / r / ROPOSEDz8"DIVERSION. - / // / 5 33 / / / LOT \ �•. W o RIPRAP LINED OUTLET PROTECTION \ / / / / / / WITH FILTER FABRIC UNDERLAYMENT / / / / \ — — — _ / / / CONTRACTOR SHALL ENSURE (MIN. L=8', Wz=4.5; Wz=iz.5', D=6") / _ - - _ / / f POSITIVE SLOPE ISMAINTAINED. / / / / / //ui _ d LOT / j // LO4 3 _ z - ---- - 0 / / / _ - '� - -- / Y BERM SHALL BE STABILIZED AS / 3z / / A FIR>T STEP IN DISTURBANCE. G LEVEL SPREADER OUT SF i - ( _ / DC /' //I �/ 5F / Z Q �� o TEMPORARILY BLOCKED DURING CONSTRUCTION, - / / - _ _ - - / /s, - - 2� . • j l o ' / / /,�,,, +" •` DIRECTING RUNOFF TO THE PRIMARY OUTFALL� uj a: �TEMP. BLOCKAGE SHALL BE REMOVED AT THE TIME _ - i / /� / / / V - - -� __-- / I FTHE TEMP. BASINS REMOVAL. DOWNSTREAM / / �K I PROPOSED SA TY FEN '`;:,` _ / � - - - - - - -- �� ---- �M - - - / � INSTALL SIGNS "WARNING � � S '/ V / / / / A V A PROPOSED OUTLET PROTECTION TO BE VDOT STD. / - ' - - 06 QU CK ND K P ° RIPRAP WITH FILTER FABRIC � (TYP.), � .� Q,� QO /." c \ - XISTING ioo-WPO BUFFER TYP_ / - - - _ _, SA EE OUT" p O i1NDERLAYMENT (L=8, Wz=3, Wz=9, D=aB") / - s"_ �.'♦w / ' / �.,.q� _ \ \ �i �y �,`, (y9% LJ.J z > / \ / �" g O O O O - r � \ W ., / d / SF �` / - -/ EXISTING W ` �� \ \ \ d SOIL& in z _ e / / �.G o / WETLANDS o \ \ f i (/ _i �O _ / O I ^ PROPOSED VDO STC). CLA55 AI o ' L T�/ w e o o / SEE SHEET a.8 FOR SF PROPOSED FLAT VDOT CL. Al RIPRAP LINED o - o 0 0 " O v ` \ \ RIPRAP LINED OUTLET PROTECTION Lu J Lu Z OUTLET PROTECTION WITH FILTER FABRIC p r ' ' / \ S / WITH FILTER FABRIC UNDERLAYMENT W Z z OUTFACE DETAILS \ o o UNDERLAYMENT(L=z8', Wi= Wz=iz.T, D=i8") o / Yam\ FLOW DIRECTION ARROW (TYP.) J \ q q MIN. L-a, w 4 5, wz 5 D=e") h LOT ~ N Lu 49 STURBANCE (TYP. \ \� ` - - - ° ° o o q ' - I \� /' PROPOSED LIMITS OF DISTURBANCE (TYP.) \ \\ \ W J -- SEESHEETS18&igFOR _ /„ - v - / \ ( / v ® eo A �,....,.Nm v, V LOT o ' - - - - - - LEVEL SPREADER DETAILS / - - - - - - - - - ` / \ ,..... 50 Q ° TREE CLEARING (TYP.) \ ` - _ _ - - - - `\ \ J � ' PROPOSE OUTOTSTD. PROTECTION \ \ J r n T 100-YR FLOODPLAN � � RIPRAP LINED OUTLET PROTECTION LLI v 1 \ � / i � � -� — — 1 I I / WITH FILTER FABRIC UNDERLAYMENT � V B• A I / A AV / /� / � � o / / \ r — — — i' / \ (MIN. L-B, WI-4 5' Wz xz 5. D 6_').....j. �•u�' \ ° \ .\ `I I \ / //' 0 PROPERTY LIMITS (TYP. \ / - / \ q°' D OP `� \ \ \ / / / / J / \ EXISTING STREAM \ / v� / o i„� \\ CONSYRU ION OF rH LEVEL EAD R'D' / / ' / �Qn >_ ` �, \ \ AND ITS OUTFALL SHALL OCCUR AT THE TIME �' / �/' //' `d U �i / v o o p / �1 0 0 0��/Io�` o o g p o �� �/ - ems, a A OF THE REMOVAL OF SEDIMENTBASIN'D. / / � x ° \ o o \ o ° \ q ° Ow€L� _PROPOSED LIMITS OF TREE CLEARING (TYP.}-� THE OPENING IN STIR. D ioz FOR THIS PIPE -' / / ,,:' O O O O 9) �/ / q q o o O —Q o� ° o \� Z - - - \ p o \ S CREEK - \ \ \ \ \\ SHALL BE TEMPORARILY BLOCKED DURING s -- o - - // V ��/ o b o o o\ i �� o♦ V/ o \ HE ESC PHASES GI�APHIC -SCA ��, �° / v v TP, o o o Lu \ G q OO / i----- --- A 40 V V 0 20 40 80 \ \V A 160 ° \ V —/ I I I '6g� O SIF ILL SEE SHEET 18 FOR up w o ( ° O O / i' �\ � �\ / / /-------- --- \ ♦ \ \ \ I `.` ,�.I I SOILTYPE d o // / - / v v A ° OUTFACE DETAILS ��� z �/ /- /------- �v A �v �� ��- - (IN 1�EPrT }v v v��? o A r�Z I I �oBNo. \ o _inos was rt. \�\\ \\ \\ \ o \ \ \\ o\ I I I \ _ ----'/----------* v� �_ ---- ����\ \\ \\ V A\ �q� \V A AAV//�// X 182154 \O\� \V '.20-YRFL DPLAINI I. L� / SCALE MATC H L I N E - vov.� �/ o�� 111=4 0, SEE SHEET 12 SHEETN . G6) 8 s LLc �I 1• �o �Ojp am No oft soft i !100 100 1- 100 / W No. 35791 9/22/2244 .'SlOuei. E�Ol 100 / a vAlft ' 00 ! / / PtE / '— V / NOTE: NO CONSTRUCTION TRAFFIC SHALL USE CLING LANE FOR SITE ACCESS N too ' /' /' � ' ❑ \ I / i 0 Z O a O V /' 00 U to/i' ' w � rl ❑ ❑ /LU u j / y 6 LU Ln w W Lu LLI00 00 i NG / a PHASE II DRAINAGE \ AREATO SEDIMENT — Lu \ BASIN C = lo.95 ACRES a N N ON ' DC \ �� � � � ROPOSEb SAFETY FENCE, / \ / / / / / �' S \ / / / / / / — — INSTALL SIGNS "WARNING '- O / / / / S / / ��— QUICK SAND, KEEP OUT"CS / / / / DRAINAGE DIVIDE (TYPJ // \ // //� / // /�,❑' :� ° 3 FLOW DIRECTION ARROW (TYP.) / / / _ _ / // \ y e 0') PR 11;t Lu / EXISTING MANAGED / / �' � / � / \ / /' \ \ �� \ — — � ' /' / � / / � . � / / / / / / / -� � \ \ I / / cy') CC \ / STEEP SLOPES (TYP.) j ❑ / \\ ' / / / ' \ I� G Z ° -------- \\ ��. .00000 /-v / /' / / `\ / CV PROPOSED LIMITS OF DISTURBANCE (TYP. \ / // / // / / i / / / ✓ / / / % /' z6� Q / > TS s SLOPES GREATER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE / / / / / /^ / / / — / >_ �� /1 MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF / TS / / / / ^ / / / J LL z o PHASE 11 DRAINAGE 0 // 5o LBS. PER ACRE, OR i LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE. AREATOSEDIMENT / / _-------- /// / / / / / / ' // / // '•. > U a BASIN B = 4.96 ACRES �, / / / / /r / / � _ \ - / PHASE II DRAINAGE /' / / / / / / / / / Lu C ° _75& — — / \�TD \ PROPOSED 18' CLEAN WATER / — f ❑ — — — — / AREA TO SEDIMENT - / _ _ ' ' _ / F- V / Z o ' DIVERSION. CONTRACTOR ' / / / _ _ _ _ _ / ' _ — ' BASIN E = o ACRES / PROPOSED VDOAS§ Al R�PRA LINED SHALL ENSURE POSITIVE SLOPE / 4. 3 / >� OUTLET PROTECTION WITH FILTER FABRIC IS MAINTAINED. BERM SHALL B / /' _ — — / / �/� Ptm!� UNDERLAYMENT L=8' W2= Wz= D=i8" STABILIZED AS A FIRST STEP IN DISTURBANCE.Lu — — PROPOSE SAFE / / •�"", i— O J / Y o PROPOSED VDOT ST❑LASS AI / / / / ' / — — — — — _ — — — — Lu ' /' INSTALL SIGNS"WARNIN Q z RIPRAP LINED OUTLET PROTECTION / / / ' / / QUICK SAND, KEEP OU // / / /p / / E / / o� — , / — — ,• ' o ° / PROPOSED LIMITS OF DISTURBANCE TYP. �_ PROPERTY LIMITS (TYP. WITH FILTER FABRIC UNDERLAYMENT S/ / / / / / / — / — — — / / / / / / / _ ( (MIN.L�', Wi= _ / / // / --I / --// / / // / / '' / �� --- / / / / / .-PROPOSED LIMITS OF TREE CLEARING (TYP.) � — — — — ❑ r /--' /'-- /�--'SB/ T � w EXISTING PRESERVED *APk0POSED SAFETY FE/NCE ' / / / ' ' — %�� ' _ — — — ' ' ° / / z Lu r-I w STEEP SLOPES (TYP.) INSTALL SIGNS "WARNING SAF❑ / �c�S / /' �// / / / — / / / / TS �' i _ - ' /' �F p �/ ui <n QUICK SAND, KEEP OUT" / ��� /� �' 33 k / / ° / / / -� / � � � � z / / '/' 0 /� / / /�� /' — — — XISTING too' WPO BUFFER (TYP.) C2 � o o / -„� RIPRAP LINED OUTLET PROTECTION _ _ — / + / / — — _ J T WITH FILTER FABRIC �9� UNDERLAYMENT�s.,���, / \ \ / w 2 / / ,/s„'•• (MIN. L=8', W1= . ', W2=12.5', D=6") DC .•" ROPOSED LIMITS OF DISTURBANCE (TYP.) \ o / / PROPOSED TE T STD. CLASS Al RIPRAP LINED / J / �• / �� � � � // � OUTLET PROTECTION WITH FILTER FABRIC \ \ \ S` / ' TS / / / / — f t' / ° O O .coo I OP UNDER LAYMENT (L=8', W14, W2=9', D=18") ) O y I ° PROPOSED LIMITS OF TREE CLEARING (TYP ° o ° p PROPOS�DVDOTSTD.2LASSA RIPRAP LINED v _ \ too -YEAR FLOODPLAIN (TYP.) GRAPHIC SCAL • .,,,r.."_ / V A (TYP.) ❑ / / / / i / /�..�„�.. / �P ° UTLEOT PROTECTION WITH W FABRIC / / EXISTING 100' WPO BUFFER TYP. / / . / 1 ° � — / "' UNDERLAYMENT(L=8', W1= ', Wz= ', D=18") `y � ao o zo +o � so ieo ui LEVEL SPREADER OUTFALL PIPE SHALL BE TEMPORARILY „.• T \ \ E BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFF TOO // I O /// / H ° \ ? THE PRIMARY OUTFALL. TEMP. BLOCKAGE SHALL BE REMOVED p G / / O o °�_O_0 ` —// AT THE TIME OF THE EVP. BASIN's CONVERSION!,"" / o o ° SEE SHEETS 17 & ig FOR /) / / \ ' (1 40 / / / / / Lu ~ s o— — \ `\ SF / / ��,.• SEES ET 18 FOR / o o F ----LEVEL SPREADER DETAILS / / EXISTING STREA / / / / l / a m \ , / / /,ti,.•.•' OUTFALL DETAILS, n o o ° „ / 1 �= ❑ --� / ' �' /o 6 ° / // // r/ / / G // // JOB NO. o 100-YEAR / I ♦_,� < < S / / - „��.� / �" ° o °- 182154 FLOODPLAIN (TYP.) /� D� _"�_\, A — — — /r�' ROPOSED LIMITS OF DISTURB (TYP.) / ' /' / / /' — — — / / / ' /' // / — SCALE o — 4,PROPOSED LIMITS OF TREE CLEARING (TYP. .• — — , / / _!s ° C \� \ \ � \ \ / � � OUOTLOETEPROTECTION WITHIFILTER FAP — + ' — — loo-YR FLOODPLAIN` / / / — / _ — — '�' / ' //' / ' 1" 4 , �o �<s2 ��—_ — r� " //— / ° LINED— / /mom — a V / /' / / SHEET NO. UNDERLAYMENT (L=15', W_1=6' Wz=7.g', D=18") p 9 s 9/ _ ' aN mac,✓` / / F- e No. 35791 9/22/2244 ' - -- - - - •---- --- • -- - - fRVfVJCVtVIVIRCIC rJ INALCONSTRUCTION OFLOTS 205-212.&UTILITIES - ASPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IS 7a8 WASHOUT AREA 3� \ ��/ / /' `>• / F f " IN THIS AREA SHALL OCCUR '.io%LAR TH NTHEMAXIMUM ME OF TOREDFUEL. / TEMPORARY SEDIMENT SE RAPVAL. o TH 0 / dPSCONo.R357 1LINS� 1100,fte IP ♦o��SSIONAL F, V /� \ / P�0 0*0 P a 100 ' V / ►� / / / pAAR00 00 IP Oa� E1� / 100 '/' ♦ .00 IP / ED\ v ,, / % NOTE NO CONSTRUCTION TRAFFIC SHALL v USE CLING LANE FOR SITE ACCESS 000 s W ♦/�4111 O /�♦ �� / \ \ �/ / \ / / CIP � v LU o U Y" 6 ♦�♦ / \ / / / /\ / \ / l T�\\\ ` 4%/ I 10 IP ; 100 PHASE III DRAINAGE Lu AREATOSEDIMENT ¢ N N E BASIN C= 9.66 ACRES I`. ON I 3 756 � \ � R POS D SA ENCE, L9 INSTALL SIGNS"WARNIN Z = \ QUICK SAND, KEEPOUT'_s Cn Lu (r) o DRAINAGE DIVIDE (TYP.) / /' / / / / ( '/"" _` M s FLOW DIRECTION ARROW (TYP.) / EXISTING MANAGED / / / / i \ / / / \ — . O / / . / - c1r) Lu \ / STEEP SLOPES (TYP. / — — — DRAINAGE / / /7 \ IP SB CN Q BASINB=7.83ACRE5 / I / S. / C A CA PROPOSED LIMITS OF DISTURBANCE (TYP. Av / / IP 0 CN ` / // / / / / ;� i s Ill ss J O PROPOS D VDOT STD. C AS§ Al R�PRA/LINED / / / \ / / / / / S - I — — _ / .,- "-.. I ro / / W 3 OUTLET PROTECTION WITH FILTER FABRIC / / J UNDERLAYMENT(L=8' Wi=3', Wz=g', D=i8") / / / / ; , SLOPES GREATER THAN 3a SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE f / \ / / / / / / �/ / / • -- 6o LBS. PER ACRE, OR i LB PER i,W vi /000 SF, UNLESS SPECIFIED OTHERWISE. -;� / / -- 1g5 /'�� '! .� f PHASE III DRAINAGE / / / - f' '` / /' / / SF \ / Q �� Lu TRAP E = o.8i / / /•r .•./' / U AREATOSEDIMENT / ' _/ ✓ a V / Lu 0-6 PROPERTYLIMITS (TYP. / / S / / / M PROAFET ENCE, o tom. P SED F_. --_-- . _ INSTALL SIGNS"WARNING,S F o _ _ / /�' Q PROPOSED LIMITS OF DISTURBANCE QUICKSAND, KEEP OUT' P // /�/' / r / PROPOSED LIMITS OF TREE CLEARING (TYP) //�• Q ----- LL Lu Lu EXISTING PRESERVED *jPkOPOSED SAFETY FENCE, / / / / ' ♦ . 1 k — — / / " - _ _ _� / / / SF o O .;;, /' / / \ \ z F-i w STEEP SLOPES (TYP.) / INSTALL SIGNS "WARNING SAF / I / — \ ✓\ / ,�,� _ _ w \ QUICKSAND KEEP OUT / / / a \ j % / / i 1yz — — — �k / / o / , / / W W z �^le / t EXISTING ioo' WPO BUFFER (TYP.) / / / 0 PROPOSED VDOT STD. CLASS AI RIPRAP LINED OUTLET PROTECTION:— / `� / / / s )' / 156' / ` I / .•A^s WITH FILTER FABRIC UNDERLAYMENT. �.� / I ( % W `m (MIN. L=8', Wa= ', Wz=iz. ', D=6 � n PROPOSEDE T STD. CLASS Al RIPRAP LINED I PROPOSED LIMITS OF DISTURBANCE (TYP) / � S, — -' / / �...• / / - OUTLET PROTECTION WITH FILTER FABRIC \ Q \ / — /' 0P UNDERLAYMENT(L 8', Wi 3, Wz=g', D s8) 1 1 O�, IP �� y _ 1aa / Oo O ° ° O o ° o o, PROPOSED ROCK WEIR OUTFALL I �. o U PROPOSED LIMITS OF TREE CLEARING (TYP.) o O O a PROPOS �— ioo-YEAR FLOODPLAIN TYP.) /, „�----u � EDVDOTSTD.2LASSAIRIPRAPLINED ( \ GRAPHIC SCALE \ �// EXISTING too' WPO BUFFER (TYP.) / / \ \ UTLET PROTECTION WITH FILTER FABRIC Q o / --- r \\ / \ �/ / / �\ \•s^� / OP UNDERLAYMENT(L 8', Wz 3, Wz= ', D i8') �, ao o 20/ ao ab Iso .g / - — — / \` \\ _\ �� / \ // / LEVEL SPREADER OUTFACE PIPE SHAL�BE TEMPORARILY \ \ ,.^�'• Lu T // O O -----� \ \ ' E O�—�� \ \ \ \ / BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFF TO �;::! PRIMARY OUTFALL. TEMP. BLOCKAGE SHALL BE REMOVED _ _ — — IN FE U a 0 _ — ) / ( , _ 952 e O _0=0 O O , \ — — -\ / �5 AT THETIME OFTHETEMP. BASIN'sCONVERSION. / o SEE SHEETS 17 & ig FOR '� \ EXISTING STREAM — - , / / / / / Lu W s o O— — — \ \ \ \ `\ \ \ — \ /„�'° SEE SHEET i8 FOR o o F _LEVEL SPREADER DETAILS �0 o _ \ SF b OUTFALL DETAILS ioo-YEAR 9 I ♦, v — V / —/ o _ 182154 FLOODPLAIN (TYP.)00 / PROPOSED LIMITS OF DISTURBANCE (TYP.), �! / F _ ,PROPOSED LIMITS OF TREE CLEARING (TYP. \� w _ — P 2oo=YR FLOODPLAIN ' ' / N PROPOSED FLAT VDOTCL. Al RIPRAP LINItD_ / \ O\ \ """' OUTLET PROTECTION WITH FILTER FABRI ' \\\` ��Y� \ // /' o o��� UNDERLAYMENT(LlS,Wi6',_Wz=7.5 D>.8") _-� / 1-- _/ �v.' �.'/-- o— /o '/. /� / /// SHEiiNO. — / / SEDIMENT BASIN'C' DETAIL SCALE: 2"=20' / /' - TEMPORARY 048" CMP RISER WITH A RIM ELEVATION OF 50'. RISER TO INCLUDE A. / TRASHRACK & ATEMPORARY 06" DEWATERING ORIFICE (INVERT ELEVATION OF 72i.96').� • / / r ■ 0 r ONCE THE SITE IS STABILIZED AND THE ESC INSPECTOR HAS APPROVED THE CONVERSION `•. PROPOSED SAFETY FENCE, �� ■ OF THE TEMPORARY FACILITY TO A PERMANENT SWM FACILITY, THE CONTRACTOR SHALL INSTALL SIGNS "WARNING 0 ♦�� • • ■ ■ REMOVE THE TEMPORARY RISER AND TEMPORARY DOWNSTREAM CMP BARREL DISCHARGING INTO PERMANENT STR. C-202 & INSTALL THE UNDERGROUND DETENTION ` --QUICKSAND KEEP OUT" / SYSTEM. SEE SWM PLAN FOR ADDITIONAL PERMANENT SWM FACILITY DETAILS. / / 726--� / 1 - SEDIMENT BASIN'D' DETAIL SCALE: i"=20' xl 722 / - - PROPOSED WOODEN BAFFLES / e �\ y / /\ w _720_719- - TOP ELEV.=726.00 / / '6�i \ \ a .y / S B - � - N _ _ - � - n� � rlrr IA � \ •�Ilip I■ uu I� \ '° I \�//\�f � F a O A� y i , s °° I / /.. Ln m w � 1. _ F�1 U, Lu s I / PROPOSED 20' WIDE VfJST CL. AI RI AP LINED , \\ \ 'q N O r a o TEMPORARY CMP RISER TO BE SET IN A i p 4A �_ z p y / EMERGENCY SPILLWAY w i SIDE SLOPES & s I - \ > w - w o j / / FOUNDATION MEETING MINIMUM VESCH - - _ �4` \ z: - - - - - - O I FILTER FABRIC UNDERLAYMENT (STONE 6�ss \ \ss a� \ > N / / SPECIFICATION 3.i4 REQUIREMENTS. - �"i, W > J � DEPTH=i8"). SPILLWAY CREST ELEV.=700.75'. � o / \ = � \ \ \ \ y, '•.,® � ` J / - �. ♦ Cd I I / / ° 1/tj� f A V A / / 0 P O OSED io DE TOP F AM / / y ' -o TOP OF DAM EL / / / / / a� - _ _ •'hy4` 10o-YR FLOO�PLA� : ` )0 2 / yo \ \ \ \ \ \ \ \ ° 72 / 48.00LFOF18" CMP @o.5o%TOSERVE ASTHE TEMPORARY RISER _ _ _--_ \ •hiyO \ WPO EAM OUTFALL. TEMP. PIPE OUTFACE TO DISCHARGE INTO PERMANENT X �•�� \ 1 BUFFER, TYP. \ / 724_ / j2$ I STR C-102 STR. C-io2. TEMP CMP INVERT IN=7ig.75, INVER OUT=7ig.5i) �„ STR C-107 (8" HDPE). THE OPENING FOR THE 8" HOPE SHALL BE X�''PROPOSED io' WIDE TOT' OF AM 6 \ D / TEMPORARILY BLOCKED WITHIN THE MH TO PREVENT RUNOFF FROM \ Z.�� , ELEVATION=7o2.0+ 8 \ \ ONSTRUCTIONOF H LEVEL SPREADERo 'D' W EN TERING THE LEVEL SPREADER & VEGETATED FILTER STRIP. TEMPORARY e'er o / \\ \ AND ITS OUTFACE SHALL OCCUR AT THE TIME / BLOCKING SHALL BE REMOVED AT THE TIME SB C IS REMOVED. \ \ nu■ �° / \\ \ OF THE REMOVAL OF SEDIMENT BASIN'D'. ` / 6 \) 0 0 \ THE OPENING IN STR. D-io2 FOR THIS PIPE o - - - - - - - - - ' \ / / / / / / 72 - \ V O �°O SHALL BE TEMPORARILY BLOCKED DURING PROPOSED VDOT STD. CLASS AI RIPRAP LINED + O A 'T E C PHASES. TEMPORARY 0i8" CMP BAR / � \ \ OUTLET PROTECTION WITH FILTER FABRIC - - \ / \ \ N N - f TO PERMANENT STR. C-ioz , \ - I / N \ LU C - UNDERLAYMENT (L=8', Wi=3', Wz=g', D=i8") x �x A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A fd48") SHALL SERVE AS THE RISER s y ° \ \ ¢ a1 N E LOWER SECTION. A 048" STANDPIPE WITH A RIM ELEVATION OF 699.75' SHALL COMPLETE r / / T / - 0all a R \ \ THE STRUCTURE. RISER TO INCLUDE A TEMPORARY TRASHRACK & A TEMPORARY 05" o \ \ \ PROPOSED 35' WIDE VDOT CL. AI / / / quo j2 •/ \ cD C STR C-104 + ° RIPRAP LINED EMERGENCY SPILLWAY / / / T�T1�,• \ Io3 / - - - DEWATERING ORIFICE (INVERT ELEVATION OF 697.76'). ONCE THE SITE IS STABILIZED AND THE o / ��n d \ / - - - - ESC INSPECTOR HAS APPROVED THE CONVERSION OF THE TEMPORARY FACILITY TO A w/4aSIDESLOPES&FILTERFABRIC, / / ��` \ \ /� Syr- / / UNDERLAYMENT (STONE DEPTH=18"). / / a \ \ - - - + PERMANENT SWM FACILITY, THE CONTRACTOR SHALL CONVERT THE RISER TO APERMANENT SPILLWAY CREST ELEV.=726.50'. / / / - x r. ° \ \ / MH STRUCTURE. SEE SWM PLAN FOR ADDITIONAL PERMANENT MH DESIGN DETAILS (STR D-`oz). z/' / s Uj + PROPERTY LINE, TYP. 98 \\ \ Z�.\ '1 Zr o IWPO STREAM BUFFER, TYP. / - - - A + ��9g �� A� U ' M o AMW s i A / x_ / 01 M / - x 0 � 7y \ ioo-YR FLOODPLAIN ' N a PROPOSED FLAT LEVEL SPREADER 'C'.SEE SHEETS i8 & ig FOR DETAILS \ Icy)LU / z + a�°� i / iiO + �S PROPOSED A k 1 0 ,� o .,,.n• MATCHLINE - ° vv �' C„ �` x '�i„•�� � VDOT STD. EW-i / ° % .II�IIJ ■4■II■11■ll■ll■II■ + / / o m � X _ 411 ■n■ill � SEE SHEETS v v o % -_ _ / n A \ \ 1 / rprll■II■11■n■II■II■II■II■II■II■ / _ _ / / 1■ll■II■11■,mil / / 61 �i & q O J /}/ VL 1 �P _ N / /' / �11wvr"rv�ioo-YR FLOODPLAIN-� --�O` / un + / / / �T�tl�a - R I 1■ru■ I�N■n■I I 1 Q w•� / / o o ° o o Oo / NOTE: SEE SHEETS 14-2oFOR DESIGN INFORMATION AND PROFILES ° ° / STR D-104 O N� 0 1 1 > J W / O / OF THE BASIN OUTFALL SYSTEM AND LEVEL SPREADER. PROPOSED FLAT VDOT CL. At RIPRAP- + I ✓osp 1 w Q o / - _ _ _ LINED OUTLET PROTECTION WITH J FILTER FABRIC UNDERLAYMENT \ OTE: SEE SHEETS i4-zoFOR DESIGN INFORMATION AND PROFILE 1 1 J J o / = / (L=28' Wi=4.5', W2=12.7', D=i8') \ - OF THE BASIN OUTFALL SYSTEM AND LEVEL SPREADER. O \ P OPOSED FLAT VDOT CL. Al RIPRAP LINED I OUTLET PROTECTION WITH FILTER FABRIC > p o UNDERLAYMENT (MIN. L=9', Wi=6', W2=6', D=i8') LU / \ POWELLS CREEK U) z ° Sediment Basin V Design MN.1'WISPILYMY 2'WITHOUT CREST OF EMERGENCY SPILLWAY drainage area (acres) 10.95 DESIGN HIGH WATER basin volumes: (using 2' contour intervals) (zs- STORM -I, elevation (ft) contour area (sf) volume (cy) Gs' 719.00 5625.0 0 MN. 10 - -- -- -- 720.00 6329.0 221.2 RISER CREST 722.00 7824.0 744.4 " ORY ' STORAGE ► DMTEMNG 724.00 9452.0 1383.4 WET • STORAGE 726.00 11212.0 2147.8 728.00 13078.0 3046.5 SEd CLEMIOUTPOINT WET ET - STORAGE REDUCED (• TO 34 C.Y./ ACRE) wet storage: wet storage required (cy) (67*13A) 733.7 design high water (ft) 726.50 dewatering orifice elevation (ft) 721.96 top of dam (ft) 728.00 wet storage provided at this elevation (cy) 733.7 top width of dam (ft) 10.0 available volume before cleanout (cy) (34*DA) 366.8 bottom of basin (ft) 719.00 cleanout elevation (ft) 720.56 approx. bottom dimensions: 4Tx121T distance from cleanout to orifice (ft) (> T) 1.4 upstream face slope: 2:1 downstream face slope: 3:1 dry storage dry storage required (cy) (67*13A) 733.7 baffles: YES principle spillway crest (ft) 725.50 length of flow, L (ft) 82 dry storage provided at this elevation (cy) 1223.0 effective width, We (ft) 131 diameter of dewatering orifice (in) 6.0 L / We (baffles not required if > 2) 0.6 diameter of flexible tubing (in) (orifice+2") 8.0 collars: YES runoff: depth of water at spillway crest (ft) 6.50 C (use 0.45 for bare earth) 0.45 slope of upstream face (Z1) 2:1 tc (min) 17 slope of barrel (Sb) 0.5 % 12yr 3.20 Q 2yr 15.77 length of barrel in saturated zone (Ls) 39.8 1 25yr 4.80 Q 25yr 23.65 number collars required 2 dimension of collars 4.0'x4.0' principles io Ilwav_: available head (ft) 1.00 emergency spillway: YES diameter riser (in) 48 required capacity (Q25-Qp) (cfs) 0.00 spillway capacity, Qp (cfs) 23.65 bottom width (ft) 35 diameter trash rack (in) 72 slope of exist channel (ft/ft) 33 % barrel length (ft) 45.50 minimun length of exit channel (ft) 30 head on barrel through embankment (ft) 6.75 crest of spillway (ft) 726.50 diameter of barrel (in) 18 Sediment Basin 'D' Design \ \ > 3 MIN 1'WISPILT CREST OF EMERGENCY 1 `/ ' - Y SPILLWAY \ \ / �\ O O 11 v drainage area (acres) 6.14 DESIGN HIGH WATER / basin volumes. (using 2 contour intervals) (zs R. WORM E EV.> -POWELLS CRE - - / \ ` Q ~� z ° - I elevation (tt) contour area (sf) volume (cy) Ds• 695.00 2960.0 0 uN 10 696.00 3681.0 122.7 RISER CREST 698.00 5217.0 450.6 • DRY ' STORAGE '� DEWATERING 700.00 6881.0 897.3 WET STORAGE 702.00 8672.0 1472.1 SEDIMENT CL OUT POINT (•WET - STORAGE REDUCED TO 3ACRE) wet storage: wet storage required (cy) (67*DA) 411.4 design high water (ft) 700.75 dewatering orifice elevation (ft) 697.76 top of dam (ft) 702.00 wet storage provided at this elevation (cy) 411.4 top width of dam (ft) 10.0 available volume before cleanout (cy) (34*DA) 205.7 bottom of basin (ft) 695.00 cleanout elevation (ft) 696.51 approx. bottom dimensions: 32'x169 distance from cleanout to orifice (ft) (> V) 1.3 upstream face slope: 2:1 downstream face slope: 3:1 dry storage: dry storage required (cy) (67*DA) 411.4 baffles: NO principle spillway crest (ft) 699.75 length of flow, L (ft) 183 dry storage provided at this elevation (cy) 429.9 effective width, We (ft) 35 diameter of dewatering orifice (in) 5.0 L / We (baffles not required if> 2) 5.2 diameter of flexible tubing (in) (orifice+2") 7.0 collars: YES runoff: depth of water at spillway crest (ft) 4.75 C (use 0.45 for bare earth) 0.45 slope of upstream face (Z1) 2:1 tc (min) 12 slope of barrel (Sb) 0.5 % 12yr 3.80 Q 2yr 10.50 length of barrel in saturated zone (Ls) 29.07 1 25yr 5.60 Q 25yr 15.47 number collars required 2 dimension of collars 3.55(3.5' principle spillway: available head (ft) 1.00 emergency spillway: YES diameter riser (in) 48 required capacity (Q25-Qp) (cfs) 4.97 spillway capacity, Qp (cfs) 15.47 bottom width (ft) 20 diameter trash rack (in) 72 slope of exist channel (ft/ft) 6 % barrel length (ft) 48.66 minimun length of exit channel (ft) 16 head on barrel through embankment (ft) 4.75 crest of spillway (ft) 700.75 diameter of barrel (in) 24 \ EK GRAPHIC SCALE 20 0 10 20 40 SHEETS OF 4' X 8' X PLYWOOD OR EQUIVALI Tr 4' ( IN FEET ) 1 inch = 20 ft. w w o I a Y 0 0 LU Q U) LU _ E C KM/ � Z CO I__ ' z w LU O Z 80 ir RISER CREST ELEVATION POSTS MIN. SIZE 4' SQUARE OR 6" ROUND. SET AT LEAST 3' INTO THE GROUND. Z w z O z () w J �/ o J 0 ° � w LU U' W> J ID z y O O Q V O � ) N U W J F U /1 0 LL � 1 w w U JOB NO. ° 182154 SCALE o 1"=20- o n SHEET NO. � 12 s SEDIMENT BASIN U DETAIL / SCALE: 1"=20' PROPOSED SAFETY FENCE, -- INSTALL SIGNS "WARNING- - - QUICK SAND, KEEP OUT' TEMPORARY 048" CMP RISER WITH A RIM ELEVATION OF 731.50'. RISER TO INCLUDE A TRASHRACK & A TEMPORARY 06" DEWATERING ORIFICE (INVERT ELEVATION OF 730.00'). ONCE PHASE II ESC IS_ COMPLETE AND THE ESC INSPECTOR HAS APPROVED THE CONVERSION OF THE BASIN INTO A SEDIMENT TRAP, TH CONTRACTOR SHALL REMOVE THE TEMPORARY RISER AND TEMPORARY DOWNSTREAM CMP BARREL. 74-0oer a* / CO OSo / � - / �X34 ` 134 0 734 . �.y0 / Y 4"TEMP. CMP BARREL, ENGTH=43', S=o.8%, INV. N=728.84, INV. OUT=728.50 v7*#% PROPOSED io' (MIN.) WIDE TOP OF DAM. ♦ �WM / i WPO STREAM BUFFER, TYP. / ■„ TOP OF DAM ELEVATION=734.0'. ■x■,uu■n■u■N ■P■))�,.-.,-^' i ■r� WIDE RIPRAP LINED A* /ill ■11 / / PROPOSED 20' IIE■11■II EMERGENCY SPILLWAY w/ 4:1 SIDE SLOPES & n■ul ` G FILTER FABRIC UNDERLAYMENT (STONE o / ioo-YR FLOODPLAIN % 1 _ J DEPTH=18"). SPILLWAY CREST ELEV.=73�.50'. 1_� / / r Ir- -()- Sediment Basin 'E' Design drainage area (acres) 4.83 basin volumes: (using 2' contour intervals) elevation (ft) contour area (so volume (cy) 728.00 4543.0 0 730.00 5893.0 385.4 732.00 7396.0 876.6 734.00 9022.0 1483.6 wet storage required (cy) (67*DA) dewatering orifice elevation (ft) wet storage provided at this elevation (cy) available volume before cleanout (cy) (34*13A) cleanout elevation (ft) distance from cleanout to orifice (ft) (> 1') dry storage: dry storage required (cy) (67*DA) principle spillway crest (ft) dry storage provided at this elevation (cy) diameter of dewatering orifice (in) diameter of flexible tubing (in) (orifice+2") runoff. C (use 0.45 for bare earth) tc (min) 12yr 3.80 Q 2yr I25yr 5.60 Q 25yr principle spillway: available head (ft) diameter riser (in) spillway capacity, Qp (cfs) diameter trash rack (in) barrel length (ft) head on barrel through embankment (ft) diameter of barrel (in) 323.6 730.00 385.4 161.8 728.84 1.2 323.6 731.50 357.9 6.0 8.0 0.45 12 8.26 12.17 1.00 48 12.17 72 43.00 4.00 24 MIN. 1• WI SPILLWAY CREST OF EMERGENCY 4'WITHOUT1gpILLWAY HIGH WATER STORM EuvJ } RISER CREST DRY ' STORAGE DEWATERING WETSTORAGE SDMENT CNOOPO T INT (jEEA WET ' STORAGE REDUCED TO 34 C.Y./ ACRE) design high water (ft) top of dam (ft) top width of dam (ft) bottom of basin (ft) approx. bottom dimensions: upstream face slope: downstream face slope: baffles: length of flow, L (ft) effective width, We (ft) L / We (baffles not required if > 2) collars: depth of water at spillway crest (ft) slope of upstream face (Z1) slope of barrel (Sb) length of barrel in saturated zone (Ls) number collars required dimension of collars emergency spillway: required capacity (Q25-Qp) (cfs) bottom width (ft) slope of exist channel (ft/ft) minimun length of exit channel (ft) crest of spillway (ft) 732.50 734.00 10.0 728.00 5TK 146' 2:1 3:1 NO 120 58 2.1 YES 3-50 2:1 0.8 % 21.69 2 3.1'x3.1' YES 3.91 20 18 % 18 732.50 SEDIMENT TRAP'E' DETAIL SCALE: i"=2o' - -PROPOSED SAFETY FENCE; INSTALL SIGNS "WARNING QUICK SAND, KEEP OUT" molod SEDIMENTTRAP'A' DETAIL SCALE: 1"=20' EX. DI�O =748 95 / PROPOSED 48"CMP RISER RIM ELEV. 748.6o, 18" CMP BARREL TIE INTO I x _ EXISTING STRUCTU RE x -x - INV IN. 744, INV OUT. 743, L=39', S=2. 6/D -PROPOSED SAFETY FENCE,- / INSTALL SIGNS "WARNING CIG i / / / / / QUICK SAND, KEEP OUT"7,7 - / 6- 7 / ST r I // �c i C. xx -i -7 1 / n�� // / / •1 J EP - - ab 11 �-73 x � ^'yj ■R■M■u■9�■u ■u■R■-D■N■R■R■I�■n■R■n PROPOSED ROCK / WEIR OUTFALL (WIDTH - 4.9" r SedimentTrap'E' Design drainage area (acres) (<3) 0.81 trap volumes: elevation (ft) area (so volume(cf) volume(cy) 731.00 2214.0 0 0.0 732.00 2647.0 2,427 89.9 734.00 3619.0 8,668 321.0 storage storage required (cy) (67*DA) 54.3 om of stone weir (ft) 731.60 storage provided at this elevation (cy) 54.3 le of wet storage sides 2:1 storage: storage required (cy) (67*DA) 54.3 ;t of stone weir 733.0 storage provided at this elevation (cy) 54.3 le of dry storage sides 21 U K A - - I 1 1 / PROPOSED/ 6' (fv11 ) IDE TOP OF DAM No. 35791 9/22/2244 / �" TOP OF DAM 734. ELEVATION- o' - O Q 0 U / WPO STREAM BUFFER, TYP. \ _750_ x- x Ln U N m / _ 750.6- x - ~ woft U / Z ti W / \ x- x - PROPOSED 6' WIDE TOP OF DAM. F'I o r a zoo-YR FLOODPLAIN O (n TOP OF DAM ELEVATION=750.50'. / o > > Lu N -750 J j> Ice Me ,• VARIA■£ OIIIICIN A CREST OF STONE WEIR VI/DA GROUND DUEY. REV. \\ DRY STORAGE ,. YWRABLE WETSTORAGE 1 (Ex MED) V iLTER CLOTN aapxAE mIaW,D REY. -SEE PIAR 313-1 CONRF *CREWE" CIAS9 E RI weir length (ft) (6xDA) 4.9 bottom of trap elevation (ft) 731 bottom trap dimensions: 365(96' top of dam elevation (ft) 734 top width of dam (ft) 6 top trap dimensions 49x114' Sediment Trap A Pipe Outfall Design FIGURE 3.29.2 PIPE RISER SEDIMENT TRAP drainage area (acres) (<3) 220 trap volumes: elevation (ft) area (so volume(cf) O.EVAM 744.00 1072.0 0.0 H0�rn0N M`SiGN INEx MARE 746.00 1800.0 1052 g T0A Dcv.) 1 MAW /'•" 748.00 2656.0 269.2 S 750.00 3640.0 501.5 eoG cu. noAG. pRR NEs 750.60 3960.0 585.9 oR STOR GE EkWMFMMY 1!W GV. m R WEI SIMAK EYA,pN WR STORMIRAOf ..._.._.._.._. .___. wet storage: 56 WNT Cl4RO0 PUNAT1ft wet storage required (cy) (67*DA) 147.4 05" "` STOWS) dewatering orifice (ft) 746.7 "A °SWC wet storage provided at this elevation (co 164.1 slope of wet storage sides 21 design high water (ft) 749.60 cleanout elevation (ft) 745.4 top of dam elevation (ft) 750.60 wet storage provided at cleanout (GO (33*DA) 73.7 riser diameter (in) 24 barrel diameter (in) 18 dry storage: barrel length (ft) 39 dry storage required (cy) (67*DA) 147.4 barrel slope 2.56% riser crest (ft) 748.60 top width of dam (ft) 6 dry storage provided at this elevation (co 173.9 bottom trap dimensions 16k67' slope of dry storage sides 21 bottom of dam elevation (ft) 744.0 5 N N QN 174 E � rn 0 C 3 a 3 z L9 M .� ° M Q 3 N z a wM > r � ° WN o C) Q M N U) N z J W I--r Q Q Q > J L o W s N Ld cL Q J J J M OLU ° `o V z o O3 _j t--� U u L U z° U LU W W r V) a LU Q o LU> _ U) E cj n aS ° z I__ Z Lu ° w w Z z �Z LU U) Z 12�U J� W° LU U J 0 z 0Q N V UQ ° w IJ U O I F W a � W = N CL Ln O U JOB NO. ° 182154 00 C SCALE ° h 1"=20' o n SHEET NO. � 13 s SEDIMENT BASIN'B' DETAIL // / / / -- --- -- -- _ - - SCALE:1"=20' / / / / // // // GRAPHIC SCALE \ / / / / 20 i 0 10 20 - -40 \ R0 PROPOSED SAFETY FENCE, / - - - _ NSTALL SIGNS "WARNING V / QUICKSAND, KEEP OUT" PROPERTY LINE, TYP. / / / ( IN FEET ) 1 inch =_ 20 -ft. I PROPOSED WOODEN BAFFLES- / TOP ELEV.=747.83 V PROPOSED VDOT STD CLASS Al A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A 048) SHALL SERVE AS THE / ss i RISER's LOWER SECTION, IN CONJUNCTION WITH THE PROPOSED REINFORCED _ i RIPRAP LINED OUTLET PROTECTION CONCRETE FOUNDATION. A 048" STANDPIPE WITH A RIM ELEVATION OF 747.33' SHALL WITH FILTER FABRIC UNDERLAYMENT COMPLETE THE STRUCTURE. RISERTO INCLUDE A PERMANENT TRASHRACK &A TEMPORARY / // (L=8',W1=3',W2=9',D=i8") / / \ 06" DEWATERING ORIFICE (INVERT ELEVATION OF 744.78'). ONCE THE SITE IS STABILIZED AND / - _ _STR 8-107 (8" HDPE .THE OPENING FOR THE 8" HOPE / B� �(0 /Ig6 / �yo �" THE ESC INSPECTOR HAS APPROVED THE CONVERSION OF THE TEMPORARY FACILITY TO A / ) / STIR 8-110 i \PERMANENT SWM FACILITY THE CONTRACTOR SHALL PLUG THE TEMPORARY DEWATERING SHALL BE BLOCKING SHALORARILY L BE REMOVOCKED WITHIN THE EN E THE TIME SB BIS B-111HVDOT MH-1 / boa // ORIFICE WATERTIGHT & RECONFIGURE THE RISER TO MEETTHE SWM SPECIFICATIONS. TO PREVENT RUNOFF FROM ENTERING THE LEVEL CONVERSELY THE CONTRACTOR MAY INSTALL THE RISER WITH SEGMENTAL RINGS & / SPREADER CONSERVATION AREA. TEMPORARY STR REMOVE/REPLACE THE UPPER RINGS WITH NEW RINGS MEETING THE SWM SPECIFICATIONS. STIR B-104 CONVERTED TO A PERMANENT FACILITY zw, SB SEE SHEETS 17& 19 FOR ADDITIONAL PERMANENT SWM FACILITY DETAILS. VDOT MH-1 / HDPE) ■u■i�■��■tl■0 / i / ST/ R B-108 ,����p�d��■�,�, + J J` VDOTMH-1 / --- _------ i STIR B-102 VDOT MH-1 103 (24' HDPE) / STR B_109 i Q RB- / ■11■II■II■I 'HDPE) I �'Pe a ,u.,un■u■u■u■luu■,uu■p STIR B-101 (24' �� + / ham/ � / .-i � / � // QF• � �1Q �� �X/ ° O WPO STREAM BUFFER, TYPI� / x PROPOSED FLAT LEVEL SPREADER'B'. SEE SWM PLANS FOR DETAILS. O / ° �O / �5 / / / ♦� / O \ \ � / / / / / / / � O / // � ' / / / / �`�a`•°•\ s"fin■n N■n�n►n■o�u■n■u■ / / - J TO PREVENT FLOTATION THE RISER / O - --- + o o + BASE SHALL BE FIRMLY EMBEDDED 6" / + / „� °� ° ° INTO AN 3.8" THICK REINFORCED - ; �� / s Z0' WIDE T/OP OF DAM rinl■n■n■n■II■II■nnI■u���a�a� ° S CONCRETE FOUNDATION THAT IS 750 / ELEV.=75o.00' / / �- 8'x8', AND BURIED BELOW GROUND. _ � / l SO / @ i + / / i / \ _ r �� / NOTE: SEE SHEETS 14-20FOR DESIGN INFORMATION AND PROFILES ■„■n■n■u�nn■' /1� ° / OF THE BASIN OUTFACE SYSTEM AND LEVEL SPREADER. WO„moo Le�/ / / �q��,�o� i i 0 / + / PROPOSED 30' WIDE VDOT CL. AI RIPRAP LINED - ��ioo-YR FLOODPLAIN EMERGENCY SPILLWAY W/ 4:3 SIDE SLOPES &r � _ ° \ ♦\ ER FABRIC UNDERLAYMENT (STONE Yi�W■II■II■I r - _ i / PROPOSED FLAT VDOT CL. Al RIPRAP LINED OUTLET + FILTER " N / I 0 PROTECTION WITH FILTER FABRIC UNDERLAYMENT / + DEPTH=i8"). SPILLWAY CREST ELEV.=748.6j' / / �yQ - - - Q\ \�\\ \ T1U�11■II■Ilyl■11■II■11■11■N■V�jY = � � `� - / / - - - - � � (L=15', W1=6', W2=7.5', D=18")/ \ % / --- -- Sediment Basin 'B' Design MIN.1'WISPILLWAY 2' WITHOUT CREST OF EMERGENCY SPILLWAY drainage area (acres) 7.83 DESIGN HIGH WATER basin volumes: (using 2' contour intervals) (25-`R' STORM ELEV.) elevation (ft) contour area (so volume (cy) 0.5' 740.00 1487.0 0 MIN. ,.G' ------- ------ 742.00 2573.0 148.5 RISER CREST 744.00 3932.0 387.7 " DRY • STORAGE .- ." NAAT NG 746.00 5543.0 736.9 WET • sroRAGE 748.00 7402.0 1214.7 750.00 9513.0 1839.E SEDIMENT I•GPOINT STORAGE REDUCED �CED 34 C.Y./ACRE) wet storage: wet storage required (cy) (67*DA) 524.6 design high water (ft) 748.33 dewatering orifice elevation (ft) 744.78 top of dam (ft) 450.00 wet storage provided at this elevation (cy) 524.6 top width of dam (ft) 10.0 available volume before cleanout (cy) (34*DA) 262.3 bottom of basin (ft) 470.00 cleanout elevation (ft) 742.95 approx. bottom dimensions: 34'x45' distance from cleanout to orifice (ft) (> T) 1.8 upstream face slope: 3:1 downstream face slope: 3:1 dry storage: dry storage required (cy) (67*DA) 524.6 baffles: YES principle spillway crest (ft) 747.33 length of flow, L (ft) 48 dry storage provided at this elevation (cy) 530.0 effective width, We (ft) 141 diameter of dewatering orifice (in) 6.0 L / We (baffles not required if > 2) 0.3 diameter of flexible tubing (in) (orifice+2") 8.0 collars: YES runoff: depth of water at spillway crest (ft) 7.33 C (use 0.45 for bare earth) 0.45 slope of upstream face (Z1) 3:1 l (min) 12 slope of barrel (Sb) 0.5 % 12yr 3.80 Q 2yr 13.39 length of barrel in saturated zone (Ls) 52.35 1 25yr 5.60 Q 25yr 19.73 number collars required 2 dimension of collars 4.6x4.6 principle spillwa)c available head (ft) 1.00 emergency spillway; YES diameter riser (in) 48 required capacity (Q25-Qp) (cfs) 0.00 spillway capacity, Qp (cfs) 1973. bottom width (ft) 30 diameter trash rack (in) 72 slope of exist channel (fVft) 22 % barrel length (ft) 122.50 minimun length of exit channel (ft) 6 head on barrel through embankment (ft) 9.46 crest of spillway (ft) 748.67 diameter of barrel (in) 24 Summary of Sediment Basin Subareas SB B SB C SB D SB E ESC Phase 1 4.96 8.12 6.05 4.83 ESC Phase II 4.96 10.95 6.14 4.03 ESC Phase 111 7.83 9.66 4.35 - No. 35791 9/22/2244 Z Z O J Q k F z w O O U m N N En :3 n w � U J Z N O .Q.Lu F a- ,n z Lu w .. Lu N MeIce L Cn w z ~ G co M Q Cn N z co 5w N W M Q rn U) INz J W N > J w L oL C) J J W '�^ z p > O ~ z Q U LU LU LU W Y (e LU Q 0 'LU^ C / LU I ZI --I LU O f) w 0 w' LU J Q �- z OO Q CD' ^ N V/ U w J IH w O w � x a � JOB NO. 182154 SCALE 111= 201 SHEET NO. 13A 0 C2 \ \ I / /TOTAL rs� ONC�FLOW w/ e EL V=4 ' (Tc1O. r / I 1 SWM FOREST AND OPEN SPACE EASEMENT NOTE: THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUIDANCE SET FORTH BY THE DEQ IN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, VEGETATED STATE, EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (E.G., TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). / o I o — /� \ / / / W - — ♦ too 000", \ / / o = — 00 Y A� �1111111110 T TAL Tc= 0.221__V� ' 100' OF CIF w/ AELEV=S (Tc=0.1 / / 1 0� CONC. FL W w LEV�5' c-0 1 h� / \ / / OT/L cl 0.27 hrs. \ \ 1,02 OF CHNL. FLOW 5 s \(Tc 0.6 s. _ 1 \ / 00' OF/ LF w/ e ELEG== — — \ — — / / / (Tc=0.2�5 hrs) — l ) ` 400j� of coN�. FLOW. w/ e \ � J A E V=32�/(T�=002 hrs)- �❑ } /� /�� ���/ // / //�_ \\ SUBAREADV/ (THIS PLAN) J / y — ���/ �// / CN=61 ro= o. h ./ / / ��7¢JS-pFli}� / / PHASE I SUBAREAS A & B 1�1 .16\hrs)/�� o ��� �/ir /9' � r � / // / / I �❑ \\ —�— `,/.1///!/ j��/ j „�fll 12.68ac. j III �o' h/ �'� / / / v / —7 `�'��, ��--��1��` k4NIII r-CIIRARF .� r / , / / /��/�'//_�I I �\ / i/� /, —� 7� �r/ i' i /'by WATERSHED SUMMARY FOR SUBAREA B P� WATERSHED SUMMARY FOR SUBAREA C General Construction notes for Stormwater Management Plans CN 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to FDA (Pre-Dev.) 63 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 WATERSHED SUMMARY FOR SUBAREA D management facilities. _ 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not CN to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. DA D (Pre-Dev.) 61 Area, ac. 1-year Flow, cfs 2-year Flow, cfs 10-year Flow, cfs 4.79 1.29 2.58 8.32 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Pre-Dev. Subarea Post-Dev. Subarea Channel Protection Compliance Limits of Analysis for Channel Protection 1 1 Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) 2 2 Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) 3 3 Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) / � I � 1 \ \ \ n IK o -4r' X \ \ SCOTT/R. CULLINSZ No. 35791 n .0 9/22/22�R Nli wo �'SIIONAL E%0'� i0 w \ O Q 0 O \ \ O u ^ U W m VI N \ � z O ¢ l_ c� a \\ V) z 0 w / LU w 2 �\L Impervious Area Summary Pre -Development Subarea B Existing Residences 37,600 sf / Existing Roads 11,925 sf / 49,525 sf \ Impervious Area Summary Pre -Development Subarea C Method of 9VAC25-870-66 Method of 9VAC25-870-66 Existing Residences 26,800 sf Flood Protection Compliance Limits of Analysis for Flood Protection Existing Roads 18,450 sf 45,250 sf Section C.2.b (10-yr Post-Dev. Flow < 10-yr Pre-Dev. Flow) N/A since Section C.2.b is met Impervious Area Summary Section C.2.a (10-yr Peak Flow is Confined within BMP & pipes) Section C.3.c (Outfalls to mapped Floodplain) Pre -Development Subarea C Section C.2.a (10-yr Peak Flow is Confined within BMP & pipes) Section C.3.c (Outfalls to mapped Floodplain) Existing Residences 12,125 sf ok W N 0 N W N Z W J J > U) W L9 J Q W w in ZW W 0 0 N LAM z LU 0 z Q LU a aL1 z� Q� J Q J 11 � Z L1 Q I-� Z H� � LU iY U) a Q � �L z UJ LU s UJ / 0L 0 LU LU z i w QLU a Q J U w a � JOB NO. 182154 SCALE 1"=100' SHEET NO. 14 i / / / I // ❑-- 1 / I / / Q v v / NET W Vogl Vol, 00'. loop 1 yNp , v n Y w/ A ELEV=5 (Tc-0.1 W w LEVL5' c- t \/ /� ❑ \ 25' OF CHNL. SOW 8 s (Tc 0.3 J BARPA / � / � / � • � =;. . w A ELEV-5' Tc- hrs ," � , /� / � � /'/.;//, / /\ \ 1 — / S -- \ aC• `; - '' / ` 13�F CONC. PLOW / / � ✓ f _ I 430- OF -CHNL. f OW ®10 ft (Tc 19 h/r5. LOW w/ A ELFV=22' (Tc CHNL. FLOW 10 ft� =0.0 hr i / / // / ` `"' — — — — — / °� IT �SUBARE V / / / - �G �� � � �a 's PHASE I SUBAREAS A & B THIS 12.68 T „ M / / - J9 M / / / / \ / / - 11 �I I ❑ U \ L \ I O SCOTT/R. CULLINSZ No. 35791 n P 9/22/22�� o�'SIONAL i� w Q a \ u U U m N � 1 Z 0 Q P C� d V) Z 0 W LV W �` (n 2 , KJF L9 .-.. i r _ gg i j / / /V^�/ / M�,. — <� � I° • � � r'"..� ��,r.�,r-�•"� � '' -" ®® yam''+-.•r."-. � y l*� ,✓ ° . .... ........... rn D CY e // /� '� \/ /' / /� i M i :•_..< °° ° ®\-i�i VA � - - - "'.: ram._ _ s �°VA / � °• . .a . °o // / \ ' / L _ I S- / / ' , ° — /� — = = _ _ _ — — — \ -( - ' -' i�- / �- LOCATION OF APPROVED PHASE I N /� — �.�:...� A��\— / / / �?e+:. "w ,� •�i —_— _ — �` — — — —_ �� A -- ®® —� / •�I 1 -- LEVEL II BIORETENTION BASIN a ,--- / �� r .... o�.-ro ...y..-. ( n — za'. �// \ ��• • •� .�, \% 'a` r"' t LU LU L9 • • �.. o • / \ APPROVED SWM FOREST & �_�- / v V vA ` V / ` / V A •° -OPEN SPACE EASEMENT - - - -/'� A / AA wv VAAv�O��� / A •I �: O \ _ - - / \ \\\\ \\ 1111 RAMBLING BROOK LANE V •• _• ° 1 ®o J Z \ �:•'°°°• �® j e ` �® _ -TYPICAL UNDER THISPLAN's/ // /� \ / \ \\�\\\\ \\\� \ •� \ ( CONNECTOR ROAD SUBAREA A •° •••.°°°•�•°°®®®® °®®••®® �� Q ....°L� ���t•�,•� •^ i ORIGINAL PO 53.�Y\\`VAAAVAAVAA`�AA�°°� l r��-�� �II'IIIII 1.10ac. 0 W 2020000 o.° - -�� 0 -� ��— _ - - A - / ��v�wvv�`��w�AAA� G A �\ z III \•• •• �� - _ v U W LU I S - �� ❑ / `� ��������VAA�\\ \ ` a I IIII A� •°V° 4\//•ti••• ,. ���• - s \ v vv v vv �. v _v J „ �. I• _ _ Q �� W Ul LU o77O / w / / LU LZ LU r_7�� LD C WATERSHED SUMMARY FOR SUBAREA B STORMWATER MANAGEMENT (WATER QUANTITY) NARRATIVE: ac. OVERVIEW: DA B (Pre-Dev.) 64 7.97 HE PROPOSED STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. CHANNEL DA B (Post-Dev.) 73 7.97 & FLOOD PROTECTION COMPLIANCE ARE MET IN ACCORDANCE WITH MINIMUM 9 VAC 25-870-66 REQUIREMENTS. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS PERTAINING TO THIS PLAN's STORMWATER QUANTITY COMPLIANCE. WATERSHED SUMMARY FOR SUBAREA C WATER QUANTITY SUMMARY Area, CN THE VAST MAJORITY OF THIS PLAN's PROPOSED DEVELOPMENT IS CAPTURED VIA STORMWATER CONVEYANCE ac. -SYSTEMS. THE PROPOSED STORM SEWER SYSTEMS DISCHARGE INTO THREE PROPOSED STORMWATER MANAGEMENT FACILITIES, EACH OF WHICH HAS A CONCENTRATED OUTFALL. SWM FACILITY 'B' ATTENUATES DA C (Pre-Dev.) 63 9.01 RUNOFF FROM SUBAREA'B', SWM FACILITY C'ATTENUATES RUNOFF FROM SUBAREA'C'AND SWM ❑ �[ PERFORMED AT ALL THREE 0 THESE FACILITIES CONCENTRATED OUT ALLS 'D'ATTENUATES RUNOFF FROM SUBAREA'D'. CHANNEL AND FLOOD ON ANALYSES WEREFACILITY DA C (Post-DeV.) 75 9.01 n FROM A CHANNEL PROTECTION STANDPOINT, ALL THREE STORMWATER MANAGEMENT FACILITIES ARE WATERSHED SUMMARY FOR SUBAREA D NS, DIAMETERS, SLOPES, etc.) OF YARD COMPLIANT WITH 9 VAC 25-870-66 SUBSECTION B.3.a (ENERGY BALANCE) AND THE LIMITS OF ANALYSES Area, DRAINS WILL BE PROVIDED WITH THE FINAL SITE PLAN. _ STOP AT THE SWM FACILITIES SINCE SUBSECTION B.3.a IS MET. FROM A FLOOD PROTECTION STANDPOINT, CN 2. ALL ROOF DRAINAGE SCHEMATICALLY SHOWN WITHIN ALL THREE SUBAREAS ARE COMPLIANT WITH 9 VAC 25-870-66 SUBSECTION C.2.a (CONFINES THE 10-yr ac. POST -DEVELOPMENT SUBAREAS B, C & D DRAINING TO SWM FACILITIES POST-DEV. STORM EVENT WITHIN the SWM FACILITIES AND THEIR OUTFALL PIPES). THE FLOOD PROTECTION DA D (Pre-Dev.) 61 4.79 SHALL BE PIPED DIRECTLY TO YARD DRAINS, OR SHEET FLOW TO LIMITS OF ANALYSES FOR THE THREE SWM FACILITIES IS SET BY SUBSECTION C.3.c (HE SWM FACILITIES INLETS, AND SHALL BE DETAINED VIA THE PROPOSED SWM FACILITIES. OUTFALL TO A MAPPED FLOODPLAIN OR OTHER FLOOD -PRONE AREA). I DA D (Post-Dev.) 79 4.79 0 J LU LLI 0i LU - J I�r� V Z FL C:) Q O / / x LU _ -J cfs cfs cfs Impervious Area Summary Post -Development Subarea B Proposed Roads Proposed Sidewalk Proposed Driveways Proposed Residences Existing Residences Existing Roads 15,075 sf 5,025 sf 9,495 sf 34,500 sf 37,600 sf 11,925 sf Impervious Area Summary Post -Development Subarea C Proposed Roads Proposed Sidewalk Proposed Driveways Proposed Residences Existing Residences Existing Roads 35,150 sf 13,975 sf 14,310 sf 55,775 sf 26,800 sf 7,750 sf \ Impervious Area Summary Post -Development Subarea D Proposed Roads 33500 sf Proposed Sidewalk 7275 sf Proposed Driveways 11,475 sf Proposed Residences 48500 sf ^ LJL 0 a w W U) 3.86 7.43 19.61 1.40 10.11 22 22 JOB NO. 182154 SCALE 1°=100' 1-year Flow, 2-year Flow, 10-year Flow, cfs cfs cfs 1.29 2.58 8.32 SHEET NO. 0.31 6.22 16.08 1 113,620 sf 153,760 sf 100,750 sf 15 i / STORMWATER MANAGEMENT WATER QUALITY NARRATIVE: \ O I - / ' POST -DEVELOPMENT SWM WATER QUALITY PLAN: SCALEV'=100' \ \ OVERVIEW:- \ \ THE PROPOSED STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS TWO - - \ ANALYSES WERE PERFORMED WITH THIS SUBMITTAL. THE FIRST ANALYSIS IS FOR THIS PLAN AND \ I \ THE TOTAL ESC LIMITS OF / / \ CONFIRMS THE MINIMUM PHOSPHOROUS REMOVAL RATES ARE ACHIEVED FOR THE DEVELOPMENT OF -1 \ PHASES I, II & III. THIS ANALYSIS YIELDED A SURPLUS OF WATER QUALITY CREDIT, WHICH WILL BE TO THE CONNECTOR ROAD VSMP PLAN (WPO 201900027). THE SECOND WATER QUALITY ANALYSIS \ PERFORMED WAS TO CONFIRM THE MINIMUM PHOSPHOROUS REMOVAL RATES ARE ACHIEVED FOR THE \ \ _ - \ - - DISTURBANCE BOUNDARY, AREA= A.49 acres, IS USED FOR THE TOTAL VRRM / IN / - OVERALL PLEASANT GREEN DEVELOPMENT (i.e. PHASES I, II, III &THE CONNECTOR ROAD). IN BOTH \ / BOUNDARY FOR WATER QUALITY / ANALYSES THE MINIMUM PHOSPHOROUS REMOVAL RATES WERE ACHIEVED. PLEASE SEE THE ATTACHED \ , STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS. 1 / \ -� WATER QUALITY SUMMARY THE BOUNDARY FOR THE FIRST ANALYSIS (i.e. THE BOUNDARY FOR PHASES I, II &III) HAS A TOTAL LIMITS / - '` ' +✓ .e OF DISTURBANCE AREA OF 32.50 ACRES. THIS BOUNDARY WAS USED FOR THE VIRGINIA RUNOFF / p / / / / ' I /' ❑ / REDUCTION METHOD's WATER QUALITY BOUNDARY AND RESULTED IN AN OVERALL REQUIRED / / / / ' PHOSPHOROUS REMOVAL RATE 23.87 Ibs/yr.- / / 10 I M THE BOUNDARY FOR THE SECOND ANALYSIS (i.e. THE BOUNDARY FOR PHASES I, II, III & THE CONNECTOR / / 00 ROAD) HAS A TOTAL LIMITS OF DISTURBANCE AREA OF 34.49 ACRES. THIS BOUNDARY ENCOMPASSES THE zj ENTIRE PLEASANT GREEN DEVELOPMENT AND WAS USED FOR THE VIRGINIA RUNOFF REDUCTION METHOD'S 000 C-3 WATER QUALITY BOUNDARY. THIS BOUNDARY RESULTED IN AN OVERALL REQUIRED PHOSPHOROUS REMOVAL RATE 24.67 Ibs/yr FOR THE ENTIRE PLEASANT GREEN DEVELOPMENT. I THE MINIMUM PHOSPHOROUS REMOVAL RATES NOTED ABOVE ARE MITIGATED THROUGH THE IMPLEMENTATION OF MULTIPLE BEST MANAGEMENT PRACTICES. PHASE I (WPO 201900003) HAS BEEN APPROVED WITH A PROPOSED LEVEL II BIORETENTION BASIN TREATING SUBAREA E. PHASE I ALSO / UTILIZED THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS (WPO 201900003 & WPO ww / / = /✓ -REA C / I201900003 AMENDMENT #1). THIS PLAN, WHICH ENCOMPASSES PHASES II AND III, TREATS SUBAREA B VIA A LEVEL II WET POND AND BY RELEASING ITS TREATMENT VOLUME RUNOFF IN A SHEET FLOW MANNER TO A / CONSERVED OPEN SPACE. THIS PLAN ALSO TREATS SUBAREAS C & D BY RELEASING THEIR RESPECTIVE / TREATMENT VOLUME RUNOFF IN SHEET FLOW MANNERS TO VEGETATED FILTER STRIPS. A BREAKDOWN EACH BMP AND ITS REMOVAL RATES PROVIDED ARE SHOWN ON THIS SHEET. / AFTER THE IMPLEMENTATION OF THE ABOVE BMPs, WHICH ARE APPROVED WITH PHASE I OR PROPOSED WITH THIS PLAN, A TOTAL PHOSPHOROUS REMOVAL RATE OF 25.88 Ibs/yr IS PROVIDED. ALSO, A MINIMUM / OF 75% OF THE REQUIRED PHOSPHOROUS REMOVAL RATE IS PROVIDED/TREATED ONSITE. / PoT7)-COVERED-U ER SEPARATE PLANS WWI unpervuus reeds= 13.o7 du. `\ \1 - \ I - _\• // -// ,,tom * • • �� ®• •g• n: / Managed Turf Areas Within LOD- Soil Type B 19.42 ac. \ // �/ •/ • I \ t\ \�` - �) r '�: - _ ` ) r••�' - _ _ _ - APPROVED�SWM FOREST / // g YP \ / \ / I ,I MATCHLINE, SEE / -��.• --_ - & RE SPACE-E SEMEi _ ManagedTurFAreasWithinLOD-SoilTypeA 1.48 ac. / / _ THIS SHEET - / _v v Q otalManagedTurfAreas- 20.90 ac. w t• It l �I II ®�i t PRE -DEVELOPMENT SWM WATER QUALITYPLAN: 7 - 1 MATCHLINE SEE � •1.........• \\ - - � g / � / Y � 7 � � - - - SCALE 1 100 _- ,,r ✓ t`� n �- THIS SHEET / - - �� - _ - / / - \ \ � I I I II • .........I 1 � � � / -- -- � -_- _-� - THE TOTAL ESC LIMITS OF \, l -III \\ ®® i•, 0 /% --•- \ -DISTURBANCE BOUNDARY, AREA=34.49 - / / - 4 • c ®• •• • O•� / w b \. \ �\ I®' IIIII \ \ \ � •��\. \ / -" �� �\ � � \ \ acres, IS USED FOR THE TOTAL VRRM K \• - - � _ � _ � ,� � �Y` BOUNDARY FOR WATER QUALITY %� ?°'°' � \ •® � \ \lY// �� � q! / �\ � 'vd `� I. r�N - e z vvv �•, -�•/, v v-� vv - / � I/ � � / //-� - vvvv _ _ / v 1 r / vv „ \ �\ 14 4 O / ���� 1 0 APPROVED LIMITS OF DISTURBANCE (PLiA5b1 WPO 201900 3, WPO 2019001T117.&._WPO / _ T `l J 2019 02.7 AMEN MENT #1) &PROS D LIMITS / \ -// / / ( / `�/ / =/ �/ \ / - / / / / / / -"'� / / / / FD TURBA CE (CONNECT ROAD, WPO �/ 2019000 CO ERED UNDER PARATE PLANS). / // / �A L ml LIMITS OF DISTURBANCE NOTE: // /\ /�_ /- THIS PLAN's WOO 202000053 ORIGINALLY / / APPROVED LIMITS OF DISTURBANCE BOUNDARY / �y J/ ',�' ✓ / / �' - --- --/ / - / / / TOTALING 16.99 acres IS NOT MODIFIED WITH THIS AMENDMENT #1). AMENDMENT WPO 202000053 4 PLEASANT GREEN WATER QUALITY MASTER PLAN ° , SUMMARY OF PHOSPHOROUS REMOVAL RATE REQUIRED \ Total Phosphorous Removal Rate Required for Proposed Pleasant Green Phases I II III and the Connector Road 24.67 Ibs r \ "+ SUBAREA E AppR�!/ O\VED VE II BIORETENTION BASIN �+ / / / / �' - / -= / / - / - / - - _7 \ ` , �a '' \ A (ASSOCIATED WITH PHASE I, WPO 201900003) / / / (See this plan's report forthe Phases I, II &III and the Overall Pleasant Green Water Quality Analyses) �` > )a* /i / .� %Y` COVERED UNDER SEPARATE PLAN NOTE: A Phosphorous Removal Rate of 0.27 Ibs/yr was Provided (By Others) for the Connector Road's Impacts to a SWM Forest &Open Space Esmt. This s / ,• / / Ile 0.27lbs/yr credit is independent of the Pleasant Green development and is not used in this table's compuations. See WPO 201600069 Amendment #2 for •-" • \ \ _, 11 1 / additional details. ° ` ` ° ° • \ .� 1 IL- ' i _ APPROVED LIMITS OF DISTURBANC /� ..i:-.V Av // / // /' �/ / / / /l / / / /-✓^"'- , , ®° f / / • VA , '',n'yx ', 1 'i - / (ASSOCIATED WITH PHASE I, WPO 20190)003) \ -PROPOSED LIMITS OF DISTURBANCE SUMMARY OF PHOSPHOROUS REMOVALRATE PROVIDED „� , / / / / / / T / <., ®•• I. APPROVED LIMITS OF DISTURBANCE (AF{{SSOCIATED WITH THE CONNECTOR ROAD, WPO /// - - - _ -,� \ \ / / / / / / / ^,,. \ 1 :; �•.: Approved Phase I (WPO 201900003) Phosphorous Removal Rate Achieved from Nutrient Credits 6.97 Ibs/yr x0190�7}EOVERED-UNOER SEPARATE PLANS (ASSOCIATED WITH THIS PLAN's Approved Phase I Borrow Area WPO 201900003 Amendment #1 Phosphorous Removal Rate Achieved from Nutrient Credits 0.18 Ibs r /�r /'�.,,,,. / -- - -_ �\\. \�- � / / / � // / ( �/" .. /®® •' rr �r � _, \ ORIGINAL WPO PLAN) NOT PREVIOUSLY PP ( ) P /Y / \\ ,, I •. / / - /y/ �/ �" \ - - - - �� '� `: '.�, ® fs � � -�� - _ " / %-' �"" „ �``yam•`" � ®® " ®® /,. -I ' ,� _ -COVERED UNDER A SEPARATE PLAN Proposed Phosphorous Removal Rate Achieved from Phases II &III (WPO 202000053) Level II Wet Pond Outfalling to Conservation Area (Subarea B) 7.59 Ibs/yr ®% j �,,.,.� •-•-•" \ \ �i �. - - / '�j` ,. .�..t+�"�+- _ / /�� ,,,, ..•- �-"""" 'µ -\ f _ -:- - Proposed Phosphorous Removal Rate Achieved from Phases II & III (WPO 202000053) Ourfall to a Vegetated Filter Strip (Subarea C) 5.07 Ibs/yr- / _ / - i \� n nla - -' - /,'"..•"' (; / - _-'" / /,�.%( _ Proposed Phosphorous Removal Rate Achieved from Phases II & III (WPO 202000053) Outfall to a Vegetated Filter Strip (Subarea D) 3.06 Ibs/yr- ( _ Approved Phase I (WPO 201900003) Phosphorous Removal Rate Achieved from the Level II Bioretention Basin (Subarea E) 1.42 Ibs/yr- / ° ° °_• ® ®° ° -- - / / Proposed Phosphorous Removal Rate Achieved from Phases II & III WPO 202000053 SWM Forest & Open Space Easement 1.59 Ibs r� •• / /�e'•••e•�'� .•% � V A �. ��_.M'�`.'.r`.'\ �' A / -„-tea -- �`iJ°�'�� � / � � °I�I ""� ''.I I - � / �• - / - - - //'Total Ph horous Removal Rate Provided 25.SS Ibs/yr MATCHLINE, SEE �i \ � 'S�/ '. ✓ % Su: - � � / r• - - APPROVED�SIKM FOREST _.-- ___ - / �. p \ •I O✓�I13PACE,EAEMENJt-//-�TotalPhosphorousRemovalRateProvidedOnsite 18.731bs/yr \ // IIII•I I " ' IIIII® THIS SHEET \_7YP- \ \ �- - / �/ Percentage of the Required Phosphorous Removal Rate Treated Onsite (18.73 / 24.67 x 100) 76 % r s ar , s , d n. r} 3 A ror " J r / / w /' / k+V Y \ . � C c , Vm woo / / / / ) •\ \ • �✓ ,o- I >% , s k f l SUBAREA B--/f � / / .� � /. ��iA+7 r � i`i/ ' \ ••• WATER QUALITY GROUND W w I w I .J -"' r / / � � - \\ / _ MASTER PLAN SUMMARIES SUBAREA E / APPROVED LEVEL II BIORETENTION BASIN Phase I Limits of Disturbance 15.51 ac. (ASSOCIATED WITH PHASE I, WPO 201900003) COVERED SEPARATE PLAN C / / \ / / - _/ :-✓ � J onnector Road Limits of Disturbance 1.99 ac. D UNDER Phases II &III Limits of Disturbance not Previously Covered 16.99 ac. .ems / . •" � v / / 2 -' �' - �- - - _ - �•� "° �?'•/ Under Separate Permit APPROVED LIMITS OF DISTURBANC - == _ Total Limits of Disturbance = 34.49 ac. v _ °"°� _ ° • ° ° • • •' • , ' j - v -� v _ (Used for VRRM Water QualityBoundary)• + ° .. (ASSOCIATED WITH PHASE I, IST RBANC 003) / ����� �� �.�,� ✓ � �� • °APPROVED LIMITS OF DISTURBANCE ••/ / A ' - • �� ` -PROPOSED LIMITS OF DISTURBANCE ��«��Y � � � � � , ' � n Y - �-'� � � • •°° ° ° //�/ �/- V \ � \ � ,.� i� �, � \ ( SSOCIATED WITH THE CONNECTOR ROAD, WPO /// �� �\ \\ / r,� v `�^ \ •� (ASSOCIATED WITH THIS PLAN's/��"��- // '- , , , , o �� �• - A� : ` ;f'"-:i �. / �'° • ° ORIGINAL WPO PLAN) NOT PREVIOUSLY ' % / - - - - - �• /•// I -- .�+ba •- ��A�-d-'�� _-���" � // �� /,,, •••° � COVERED UNDER SEPARATE PLAN/ V r / SCOTT R. (7bLLINS'Z No. 35791 n P 9/22/22�� owo �'SIONAL Z Z O ° J Q �_ H Z w 0 o C H U Ln m N N n w Lu of J rn u Z Q W w > Lu V) C Lu 0� ok ti M 00 N C'7 d' W (N C:) VJ N W \N z w J J U) I zw w U 1 > N z ° W 0 ° L 3 m rn z ° a 3 W ° I� o Q a z a� o c J Irk ° w= �i 1Q c ° O z� V) a J 3 I� U z 0 a 0 W w n m cn w Q v , r� o c Q > a- z Q° ' Z w w z Z w� �Z W w QZ LU J o U V O� n n V I > z N U x ' ^ m V J w Q° Wm _I E U U O a 0 w ° w a UU) ° JOB NO. m 182154 ° c SCALE ° 1"=100' 0 n SHEET NO. N 16 1 FLOW PATH > J;1 / (FLOW LE)4G9d--138'/WIDTH=45') \ FFCIIVT �TOR`SHALL USE NU]RIENCHTOPSbtLFOR THE / AQ ATI ENCH & SHALL ENSURE H ALTHJGROWTE(OF PLANTINGS / _ - 64- STORM WATER MANAGEMENT FACILITY 'B' DETAIL, SCALE 1"=30' 2'WIDE INTERIM TOP OF DAM ELEV.=746'. RUNOFF / FROM THE WETLANDS & FOREBAY CELLS TO ENTER THE MAIN CELL VIA AN OVERTOPPING. � a.o'WIDE TOP OF TYP. PURIIN THE FIRST YEAR (TYP.) � \ /'"'N � \ - � '+\ �f,� \ 7 `8' WIDE VDOT CL. Al RIPRAP LINED FOREBAY SPILLWAY CREST ELEV.=745'. \ \ \ \ SPILLWAYTO CONVEY RUNOFF FROM \ / 5 - FOREBAY TO WETLANDS CELL / \ \ �Ssf WETLANDS \ \ \ io' WIDE, 12" DEEP O� \ AQUATIC BENCH / \ \SHOKTEST FLOW PATH (83' ) / O \ \ F Osf 12SSf\ Ove ALL LENGTFF(io3')> o.8 I N . J C OF \� TQQ PREVENT FLOTAT) N THE - - - O�9' �� Q / / \ \ / \ 6 �RLSER BASE SHALL BE FI MLY / - STR. B-100, A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A EMBEDDED 6" INTO A T CK 1�EINFORCED CONCRETE I\ / - _ 048 ) SHALL SERVE AS THE RISER s LOWER SECTION, IN \ OUDiBA NN THAT 158'x8', L_1VC / F - / CONJUNCTION WITH THE PROPOSED REINFORCED CONCRETE �N}1 BURIED B NTH GROUND.I - � RF@ � / `FOUNDATION. A 048" STANDPIPE WITH A RIM ELEVATION OF 747.67' � \ I / CF A / SHALL COMPLETE THE STRUCTURE. RISER TO INCLUDE (1) ONE \ J C \ PERMANENT 06" LOW -FLOW ORIFICE WITH AN INVERT \ \ PJOPOD VARIABLE WID7 I S�Ssf OF _ ELEV.=746.00. CONTRACTOR SHALL PERMANENTLY PLUG ANY `S \ oil ACCESS ESMT. r� EC N / N EXISTING TEMPORARY ESC DEWATERING ORIFICES WATERTIGHT AT THE TIME OF THE FACILITY's CONVERSION, OR REMOVE THE UPPER y TEMPORARY RINGS. ALL ORIFICE OPENINGS SHALL HAVE STATE \ $ �'�,_r�u�um" APPROVED TRASHRACKS, TYPICAL. SEE THE DETAILS ON SHEET 19, N \ \�'�� ,.� 0+00 \ OR EQUIVALENT, FOR ADDITIONAL INFORMATION. \\ \ \ ll PROPOSED G DEEP FOREBAY TO \] PROVIDE PRETREATMENT UPLAND v A \ O _ S ( : \i \\ ��\ OF MAIN CELL WETLAND CELL. \ ., PR O POSED 30WI DE Vt�TT\���A, RIPRAP LINED EMERGENCYSPILLWA w/ 4:1 SIDE SLOPES & FILTER FABRI U NIDE I ENT (STONE DEPTH-8") 11TagP&t TOR�OF-DAM ✓0 -' ELIEoo,, FYP T _ 1 REST ELEV.=7y8.67. vl�, y \ a \ \ \\ O \ O ,_ - -'� - - PROPOSED 1o' WIDE GRASS v A O O O SEE THIS SHEET FO \ ALED PROFILES OF \. STIR B-1i \ LINED, GRADED SWM ACCESS \ \ (2%MAX. CROSS SLOPE) \ \ \ \ \ THEVIG1`A FACILITY, TYP. a \ �*,100-YR FLOOD P LAI'� \ O - ♦� O ' �, i,- -WPO 3+0� STREAM-�\ BUFFER.- TYP. ��� ' 0° ,.. O �QPOSED VU�(1NAfl,(aEWID=I{ny,., O "S' FOREST & OPEI IrACE �"♦ 1 _ - - \ \,\ \,- \ �- .EASEMENT. \ �e STR B-104 I PROPOSED STR B-107, A 08" LOW -FLOW OUTFALL CARRYING THE TREATMENT VOLUME \ ' FLOW TO LEVEL SPREADER 'B' (75.5LF OF 08" HOPE @ 1.00% (II=736.37, IO=735.61) \M \• \ O . ♦ o� ) Q \ \ - - - _ _ ,PROPERTY LINE,.. .0....0�` O o\ o� o.� �46j STR B-108 \ \ \ S \ O ( VDOT MH-1 STR B-109 �� \ \ \ \ O \ RIM =739.50 65.45 LF OF 08" HOPE @ 0.90% _I \ \ \ II 735.51 IO 734.92 G d- ( ) r \ � \ 1\ \\ O ��/ \ ♦ _ ,� RA STIR B-110 \\ \\ \ \ \\\ '�.y, VDOT MH 1 \ \ \\ \ \ O° 1 / -"fir RIM=737.00 \ \ \ \ STR B-111 i t- 1.90 LF OF 08" HDPE 3.68% S \ \ \ \ \ / � \ - � \ (II=734.82, I0=734.75) � \ \ \ \\ \ \ O O \ \ \ \ ` \ O -0 _ � � \ - - \ \ 1_% \ \ PROPOSED VDOT STD. CLASS AI RIPRAP LINED OUTLET PROTECTION PROPOSED 68' LONG FLAT LEVEL SPREADER'B'. LS TO \\ \ \ O \ WITH FILTER FABRIC UNDERLAYMENT(L=8', W1=3', Wz=9RD=18") HAVE Alz"DEEP PLUNGE POOL &6"WIDE RIGID LIP. LS � _ _ \ \\� \ O TO INCLUDE A VDOT CL. Al RIPRAP LINING AND A SLOPED -� \ \ v ER 734.75- BEGINNING OF LEVEL SPREADER \ 3'(MIN.)VDOTCL. Al RIPRAP LINED EMBANKMENT 4 733.5- BOTTOM OF LEVEL SPREADER \ \ \\ DOWNSTREAM FROM THE RIGID LIP EXTENDING TO THE, T _ \ \� EXISTING GRADE. ALL RIPRAPTO INCLUDE FILTER FABRIC \� 734.5- TOP OF LEVEL SPREADER \ \ � UNDERLAYMENTS&BEAMIN. OF 18"DEEP. u O PROPOSED FLAT VDOT CL. AlRIPRAP \ \ \ i + / 73�' \ \ v, `\ LINED OUTLET PROTECTION WITH \ O \ / \ �` FILTER FABRIC UNDERLAYMENT � + \/ O \ \ \ \ (MIN. L=15', w1=6', w1=7.5', D=1a") \ 5+ 0 t734.0 O 68' 733.E y \ \ \ o \ \ \ 3.8 0 AQUATIC BENCH (ZONE 1) PLANTING SCHEDULE FORSWM FACILITY\\ \\ I PROPOSED 68'WxSoL'CONSERVATION EASEMENT. AREA WITHIN \ \ \\ \ cP EASEMENT TO REMAIN UNDISTURBED&TO BE LOCATED \ \ O O \ �-10': I� x. - �\ \ \ L OUTSIDE THE LIMITS OF DISTURBANCE. NO GRADING OR \ \ \ �\O ^\\ \ SLOB\= 1 O o1 CLEARING OF NATIVE VEGETATION WITHIN THE-7 1 �\ EASEMENT. EASEMENT PREVENTS FUTURE DEVELOPMENT. ZONE 1 PLANTINGS \v AQ AAA +18 �� �� O O v� \ SYM BOTANICAL COMMON NAME 9ZE SWM FACILITY QUANTITY COVEF;AGE(sf) PC PONTEDERIA PECTINATUS POND WEED 850 VA VALISNERIAAMERICANA WILD CELERY 600 EC ELODEACANADENSIS WATERWEED 725 GENERAL SWM NOTES: 1. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON SHEET 1g, OR EQUIVALENT, FOR INSTALLATION. z. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.14 SPECIFICATIONS. 3. CONTRACTOR SHALL HIRE ATHIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE EMBANKMENTS ARE STRUCTURALLY SOUND. THE EMBANKMENTS SHALL HAVER COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN IN THIS PLAN. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING AND RIPRAP AND THE REMAINING DISTURBED EMBANKMENT SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 29b OF OPTIMUM MOISTURE CONTENT. ALL EXISTING AND PROPOSED FILL MATERIAL AND PROPOSED CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS, AND PRESENT DURING THE CORE SAMPLING. y. THE DOWNSTREAM EMBANKMENT SIDE SLOPES OF ALL PERMANENT FACILITIES SHALL HAVE A MAXIMUM 3:1 SLOPE. S. CONTRACTOR SHALL EXCAVATE SEDIMENT LADEN MATERIAL IN THE ESC SEDIMENT BASINS AT THE TIME OF THE FACILITIES' CONVERSIONS TO PERMANENT SWM FACILITIES. AT THIS TIME THE CONTRACTOR SHALL REGRADE THE SEDIMENT BASINS TO THE PROPOSED GRADES SHOWN ON THE SWM SHEETS. THE CONTRACTOR SHALL MINIMIZE SOIL COMPACTION DURING THE CONVERSIONS. CONSERVATION AREA BELOW LEVEL SPREADER &LEVEL SPREADER REQUIREMENTS: MAINTENANCE INSPECTIONS: ANNUAL INSPECTIONS SHALL BE CONDUCTED IN THE NON -GROWING SEASON DURING THE FALL AND WINTER MONTHS. INSPECTIONS SHALL TRIGGER MAINTENANCE OPERATIONS, AS REQUIRED. MAINTENANCE OPERATIONS MAY INCLUDE, BUT IS NOT LIMITED T0, SEDIMENT REMOVAL, PERIODIC MOWING, REPAIR OFTHE LEVEL SPREADER AND ENSURING A DENSE, HEALTHY VEGETATED GROUNDCOVER. MOWING SHALL BE COMPLETED AT LEASTTWICE A YEAR TO PREVENT FURTHER WOODY GROWTH AND SPOT RE -VEGETATION OF THE CONSERVATION AREA IS REQUIRED IN ORDER TO MAINTAIN A go9b MINIMUM COVERAGE RATE. THE CONTRACTOR SHALL CONDUCT THE INSPECTIONS FOLLOWING THE FIRST YEAR THE PROJECT IS COMPLETED, AND THE OWNER SHALL CONDUCTTHE INSPECTIONS THEREAFTER. INSPECTIONS SHALL INCLUDE THE FOLLOWING ATA MINIMUM: 1. ENSURE FLOW PATHS ARE NOT SHORT-CIRCUITED IN THE LEVEL SPREADER AND THROUGH THE CONSERVATION AREA. r z. ENSURE DEBRIS AND SEDIMENT HAS NOT ACCUMULATED. IIL 3. CHECK FOR SCOUR AND EROSION WITHIN THE LEVEL SPREADER SYSTEM AND CONSERVATION AREA. y. CHECK FOR FOOT OR VEHICULAR TRAFFIC DAMAGE IN THE STONE. IN THE EVENT MAINTENANCE IS REQUIRED DURING THE ABOVE NOTED INSPECTIONS, CORRECTIVE MEASURES SHALL BE COMPLETED IMMEDIATELY. \ V � 3 -_- O, .ZL 7322 O O \\ \\ a\OA COPE RANGE= 3-6% -T PROPOSED 30' WIDE VDOT CL. Al RIPRAP LINED EMERGENCY SPILLWAY w/ 4:1 SIDE SLOPES & FILTER FABRIC UNDERLAYMENT (STONE DEPTH=18"). SPILLWAY CREST ELEV.=748.67'. M 755 F 755 U0 In I.L. 750 750 PROPO ED X STING 30, G GRAD, ADE 745 745 W W O O It O � O cave �o Mo Mo 0+50 0+75 WET POND'B' DESIGN & REQUIREMENTS Treatment Volume, Tv (VRRM) 12,892 cf Minimum Treatment Volume Required for Level II Basin 19,338 cf Treatment Volume Provided at MWSE 13,203 cf Minimum Percentage of Tv Provided at MWSE 50 Percentage of Tv Provided at MWSE 68 0 Ponding Depth Corresponding to Minimum Tv Required 0.7 ft Maximum Ponding Depth allowed for Minimum Tv 4 ft Maximum Percentage of Tv Provided above MWSE 50 Percentage of Tv Provided above MWSE 32 p Minimum Forebay Volume Required ( 15/a of Tv) 2,901 cf Forebay Volume Provided 6,028 cf Minimum Upper Wetland Shelf Area (10% of Pond Area) 640 sf Upper Wetland Shelf Provided 669 sf PROFILE SCALES xx 7 SWM FACILITY B SPILLWAY STORMWATER MANAGEMENT FACILITY GRADING Elevation (ft) Area of Forebay Cell Contours (sf) Volume (cf) 740 287 0 741 474 377 742 699 959 743 957 1,784 744 1,247 2,883 745 1,568 4,287 746 1919 6,028 748 - - 750 - - Elevation (ft) Area of Main Cell Contours (sf) Volume (cf) 740 741 87 742 360 0 743 818 574 744 1,344 1,644 745 2058 3,332 746 3809 6,221 748 10345 19,842 750 14767 44,823 STR. B-100, A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A 048") SHALL SERVE AS THE RISER's LOWER SECTION, IN CONJUNCTION WITH THE PROPOSED REINFORCED CONCRETE FOUNDATION. A 048" STANDPIPE WITH A RIM ELEVATION OF 747.67' SHALL COMPLETE THE STRUCTURE. RISER TO INCLUDE (1) ONE PERMANENT 06" LOW -FLOW ORIFICE WITH AN INVERT ELEV.=746.00. CONTRACTOR SHALL PERMANENTLY PLUG ANY EXISTING TEMPORARY ESC DEWATERING ORIFICES WATERTIGHT AT THE TIME OF THE FACILITY's CONVERSION, OR REMOVE THE UPPER TEMPORARY RINGS. ALL ORIFICE OPENINGS SHALL HAVE STATE APPROVED TRASHRACKS, TYPICAL. SEE THE DETAILS ON SHEET 19, OR EQUIVALENT, FOR ADDITIONAL INFORMATION. 100-yr PEAK WSE=748.89 -7F17, I �10-yr PEAK WSE=748.31 ILL If PROPOSED io'WI ETOPO DAM EL V.=75o.0 (MAXIMUM ROSSS OPE OFz ). CONTR CTOR S ALL INSTALL Y WIDE INTERIM EMBAN MENT I ACCO DANCE / 750 OP OF AM THE DE IGNS S OWN 0 SHEE 19. 750 ELEV.=71 6'. cy } STR. B-1 VDOT MI z -1 WET POND AERATOR. TO INCLUDE SEE THIS AN SHEET �P RIM=749. Ba FOR DETAILS, OR EQUIVALENT. ROODS D � GRAD 745 745 STR. B-1 yVDOTM � �yP io' WIDE, 12" DEEP a AQUATIC BENCH EXISTIN RIM= z. 74 o GRAD LINED OUTLET PROTECT ON WITH 740 FILT R FABRI UNDER AYMENT 740 MIN. L-1 W1 6 Wz- D-16" PROPOSED 6' DEEP FOREB YTO PROVIDE PRE REATME T UPLAND OF MAIN CELL & STIR B-101, 122.56 F OF 02 "HDPE ETLAND CELL. @ 1.00 (II=73 .48, I0= 38.26) 735 735 TR B-10 88.91 F OF 0 "HDPE TO PR VENT F IWIN THE RIS R BASE 5 ALL BE IRMLY @ 1.90 0 (II=73 .16, IO 736.47) EMBEDDED 6" NTO AN 8"THICK REINFOR ED CONCRETE FOU DATION HAT IS 8' 8', AND URIED B LOW GR UND. STR B 107, A 08' PROPOSED LOW FLOW OUTFACE CARRYING STR -105, A 24" HI H-FLOW 73O THE REATMENT VOLU E FLOW B PASS O TFALL W TH AV t OT STD. 73O T LEVEL SPREADER 'B' ES-1 7.98 LF OF 024" HDPE @ 4.37% (II=73 .20, I0=731.17) > > W W I\ N �� � 0 �� � pO r<n� �� � � O * 4 T0 r, Y � �� r�n� If u7 � W W Elevation (ft) Area of Wetland Cell Contours (sf) Volume (cf) 740 - - 741 - - 742 - - 743 - - 744 50 0 745 320 165 746 669 649 748 - - 750 - - r-Q (a Elevation (ft) Total Facility Area Contours (sf) Volume (cf) 740 287 0 741 561 416 742 1,059 1,213 743 1,775 2,615 744 2,641 4,809 745 3,946 8,080 746 6,397 13,203 748 10,345 29,787 750 14,767 54,769 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+25 AIR FLO 3 DIFFUSED AERATION SYSTEM SPECIFICATIONS PURPOSE; 1 he diffused ap. ]eHibn manufacturer shall prow0e an underwater aeration system designed to aerate, de stratify, and circulate water without dlsmfim9 the natural surroundings of the lake environment. SCOPE: The diffused air, aeration package shall be f being instilled in lakes deeper than aft 1 I m1 . capable o PACKAGE: This aeration package shall include the following equipm<nL a. Air compressor cabinet endosurc. To Include oma essor s circuit dsconnectand air How balancing valve manifolds - To be designed to operate an either' I. 60Hz power, I18/208/I30 roll single phase I. SOHz power, 220/240 volt, single phase b. Alr/Oxygen disc diffuser manifolds r. Tubing SWM FACILITY B SECTION .(. � F+ti•v'e 4 wr,wonaroma som%air1107 Iggaparlpss CABINET/ENCLOSURE: TUBING: lAroi3obk In 100f! (30m)incnmenrsJ O I Compressor Total required tubing for system: O 1 Compressor feet (! m) Non -weighted p0lyvirryl chloride tubing SPECIFY: H5 Volts 60 Hz _-_-- ket (_ m) Weighted polyethylene chloride nlbmq DIFFUSER MANIFOLDSS): Rupk wOsxl dtrJ Tubing lengths per diffuser manifold. Quamity Type Single Disc Mantllfl f meters Non -weighted Wbin _^. ifd-- 19 feet IO 1 g ! - Dual Disc Manifold(s) Q feet (0 meters) Weighted tubing PISTON AIR COMPRESSOR: (for lakes lit (I m) deep a largeq The air compressor(s) shall be a 1/2HP rocking piston, dual frequency, permanent split capacitor IpsU electric motor with oilless lubrication, direct drive (no belts or pulleys), designed for field service caDabtliry, polyurethane rust protection, and to Include the following motor protection Thermal Overload prOlMkn, and Intake air fitter. The serviceable Darts: piston cups. retainer screws. cylinder is rings. head orings, valre and valve retainers. slroukl last two years In continuous operation. These maintenance pNb shall be replaceable With common tools. Hesse consult your total distributor If you require assistant in choosing sizes, accessories, or applications. AIR COMPRESSOR CABINET ENCLOSURE: a. Cabinet body and cover construction shall be 18 gauge (0.048in/0.122tm) 304 stainless steel, and include FPDM edge -grip seal b. Cabinet woling system to consist of two f21 axial exhaust tans and vented make louvers on the bottom or the cabinet to provide an all exchange rue of 410.490 CfM c. Compressor -intake air to be quick change cartridge type filters d. GbmN enclosure secured by stainless steel latch to accomodate locking mechanism P/N 03-32420R APPROVED EQUALnm SplmLrtuonu rapel,Y7 AIR FLO 3 DIFFUSED AERATION No clecOtcal parts in water. safe for recreational u• - Extremely energy efOtlent and cast eReclive, > 12in 1350Irmt1 discs are coated to proyide non•atick surface and offer higher efficiencies; throughout lifepTle. Operating depths up to 40[r+ or 12:2m+. xI -i Cw:prtfw: PEnn YgYOR YI:MW PRODUCT ILLUSTRATIONS $1111114 na>"rxYa•rr•. . . e .. Complete package includes cabinet idt h ca nD re.s: sorts) filter and vane manifolds; and dgftiser maN[old(s). aw...rrr+Yusevw"°"'° ols,,..,,..wa wi..,.....rrsvn•,,.w Safely listed ETL6 [TL-C, rbn[ol'ndng pv.rnrxwsu,x r rruanwun.w..n Yr Ynlmxyr•.e e.•,•YYaY,." tested and with s to UL standards: and carries a 3cd party listing x7th CL w..Y,,.YMs,...rM..mY, •w"� Z..N.Yr wymr..,ro. ter•..rw„ 1 °n,n vmv + w wsww wvwrwm gar nl Y11A ;� 1 1 ^�� 2 _l IIW IA• ]]N.NM nvr xne 1 --Z. W • art lri arrrn 1 r sn w ! • I r �� � � • u ntw.er• nvr.rwe "in "I are><I • Mix • uf.at x ut:ls Ml as • Nax! s ^ - s.sw•ms Pieaxm kgrnl lernmmn F IY,•lis•lay NlM..la,rlrw0 ranrnr.YNr a .a...wNY..r.,Y, u•,•n". N. n,.Y. wNY.»rYM1lnul^, eM.sabun ,rar.Y4 "yrletl rKlpN,Y I aaw.NMn • 6rllq wa«r"n d .enn. w...•u..:.r w•..«r umN N"fYn lar(rr1[ailYr N fMf ten M fa.eloMr 3 rr"won.r,r.Yn..mv.cmn v,.v,,..c+.saeuur.r...� P/N 03-3242 OR APPROVED EQUAL PROFILE SCALES He SYSTEM System, W6, � AIR/OXYGEN DIFFUSER MANIFOLDS The air/oxygen disc diffusers shall include, but not be limited to, the following materials of construction. a. Disc type 12in (350mm1 membrane diffusers allow for maximum 12CFM and are resistant to Ozone and W f less than 12% b. Membrane material to be premium quality compression molded rPDM with an oil content o c. Diffuser membranes should have a minimum of IO,I SS slit perforations and be at teat[ 70%hYdrophdk, with tensile strength at 2000 psi d. Diffuser to consist of membrane with integral guket, base, retaining nog, and air flow ventral onlice e. Membrane shall collapse and seal when aeration system air Is tamed off f Sealing method of Maiming device shall generate a minimum of 50 pounds per Inch/ SB Kg/n aof circumference of the sealing gasket to provide a long term positive zeal and to prevent air esnpe g. Diffuser base and rtOlnlnq ring to be constructed of popproDYlene with organs UV stabilizers and a tensile strength of 5000 psi h. Diffuser to have One 3/4in (2.Scm) connection method to manifold I Each diffuser shall indutle a manifold that will connM up to tww (2) air -discs to the air supply tubing j. Manifold base shall be constructed of high-tlensiry polyethylene plastic and Incorporate ballast channels for level sinking of Dads during Installation WEIGHTED POLYVINYL CHLORIDE TUBING: Tubing shall be constructed of heavy, negative buoyancy, polyNrryl chloride (PVC) material. The PVC tubing shall be I /Y Il crxl with a minimum wall thickness of 1H• (.64 cm). Pressure ndrlg shall he 225 psi at 70o F (21 o Q. Coil lengths shall be 100' (30 m), with a weigh[ per 100' 130 m) of 43Ibs (2O kg), Tubing shall be self -sinking, lead free, aM contain carbon blxk for uY protection. Please consult your heal distributor for addltlonal Information. NON -WEIGHTED POLYETHYLENE TUBING: The polyethylene tubing shall be 1/2is (Icm) with a minimum wall thickness of .06in (LSmm). Pressure rating shall be 100 psi at 73 F (22 Q. Coil lengths shall be 100' (30 m), with a weight per 100h (30m) of t I Its l5 kg). Tubing shall connin 2%carbon black for long term UV OrolMlon. Please consult your kcal distributor for additional Information, INSERT FITTINGY Insert fittings are used to repair, adapt, or connect with the poyethylene tubing. Fittings available shall Include line size couplings, male adapters, and elbows. TESTING: A. Safety •The aerator system shall be tested and approved as a time. Separate component testing not allowed. Unit must be tested W ETC, ETL-C, CC UL of other accredited testing facili[Ies. B. Performance - Unit must have Independent performance testing provided by GSEE MANUFACTURER: The diffused au, aeration system shall be Air Flo 3 Sv stems as manufactured by Otterbine Bareho Inc. 3840 MAIN ROAD EAST, Emmaus, PA 18049, USA. PH.1610) Emmaus, PA or approved equal. For approved equal status, supplier shall provide the following Information to the project designer, within 10 days of the bid opening date, for writers approval. WARRANTY: The aeration system shall include a two year warranty on the air compressor, air diffuser and Y of mllmer s macs a Dlst underwater tubing. AF3-242; PIN 03-3242 OR APPROVED EQUAL all u N� V=nTpeECrxTNa ,aArJU l2 MYiM41. .WtUN£ aw m"m awnnw crwururc moreorlml errxu ,e asrms PROFILE (WITHOUT UPPER SHELF WETLANO) Figure 14.1. We[ Pond Oesign Schematics Fr• 3 OmultO as sysnm srxxllkxbm 1 py 2 M i SECTION A: TYPICAL DETAILS PLANVIEW NI�rE {�FEn Tp TgnlE tYpy.p CEF.]N WEC AV 1]CO18rRx.'l8]WEMNO erz:rlw s ron _r ara° u^N¢L1NE xw e.orui°s °rvn, wrrrmA wrrcTUNo aru GVEflFtCM' TO veer ttwo NonN1As gepETr tNOR BB+(:H CHNwEIwgTE4TICW � � N\ a,.FErr nErCH SCOTT/R. CbLLINS'Z No. 35791 p 9/22/22 �'S'Inarnr E�Ol III CLu Lu � ZO a k F Z w O O � onN N W p !n J � Z •1 N z J . W Q ~( J Q W J � 0 J W � W 0 / LLJ J U W Q LBL� W Q �Qr w C1 Z G N 1 L.L � I 0 -IJ w (� IIJ Q H � z N Q J ,wi oL w p w a U) JOB NO. 182154 L9 I_: > LI e U U C U U AS SHOWN SHEET N0. 17 STORMWATER MANAGEMENT FACILITY'D' DETAIL, SCALE 1"=30' CONTRACTOR SHALL CALL THE COUNTY INSPECTOR& 0 ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BMPs. THIS AOPOSED VARIABLE WIDTH IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION SWM & ACCESS ESMT. SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT / BEFORE STONE BEDDING IS INSTALLED. / / PPOPFERTY LINE, TYP. / / 'D'. / L / PROPOSED SWM FACILITY SEE THIS SHEET & SHEET 20 FOR DETAILS. 100-YR FLOODPLAIN / / \) n 0120" INV 695.53' RESTRICTIVE STEEL WEIR PLATE, T LOW POINT, TO DRAIN THE SYSTEM. SEE DETAIL ON THIS SHEET. /PROPOSED STIR. D-zoi, AN ELEVATED 018"HIGH-FLOW BYPASS OUTFALL CARRYING LARGER STORM EVENTS / 9 - - - SEE AS SHEET FOR. " j SCALED PROFILES OF./ -THFJSWM rACILITY,TYP. PROPOSED 42' LO G FLAT LEVEL SPREADER ♦ / \ 'D'. LS TO HAVE A 12" DEEP PLUNGE POOL& � / 6" WIDE RIGID LIP. LS TO INCLUDE A VDOT / CL.AlRIPRAP AND SLOPED '- LINING A3'(MIN) i SZFp-10 / VDOT CL. Al RIPRAP LINED EMBANKMENT / DOWNSTREAM FROM THE RIGID LIP / EXTENDING TO THE EXISTING GRADE. ALL _ RIPRAP TO INCLUDE FILTER FABRIC -. �- 1+��----- UNDERLAYMENTS&BEA MIN. OF z8"DEEP. STR D-104 / � S R/D-1d5 r, a 694.3 E, \\ \ 0-10': MAX. \ \ SLOPE= 27 A2 \� � 654.2 � 7� PROPOSED FLAT VDOTCL. AIRIPRAPLINED OUTLET PROTECTION WITH FILTER FABRIC UNDERLAYMENT (MIN. L=g', W1=6', W2=6', D=18") / 0+00-� ~ / \693.95 / 0-35': MAX. SLOPE= 3% 693.95 /° / PROPOSED 35'LX42'W VEGETATED FILTER / / \ 6 STRIP. FILTER STRIP TO BE UNIFORMLY / j GRADED TO THE SLOPES SHOWN TO / ENSURE SHEET FLOW BELOW THE LEVEL SPREADER. CONTRACTOR TO TIE BACK \ GRADES AT 6:z&PREVENT SOIL / / COMPACTION BY HEAVY EQUIVALENT WITHIN THE LIMITS OF THE FILTER STRIP. SEE SHEET zo FOR ADDITIONAL FILTER STRIP DETAILS & DESIGN REQUIREMENTS. -� / °d 1 -I- ' I 11 \ \ \ \ ` \� 0120" INV. 695.74' _ - - - 71� ,may \V000 \ � `♦ PROPOSED ACCESS MH W/ STAIRS FOR INSPECTION & 6A LP MAINTENANCE, TYP. ACCESS MH TO BE LOCATED UPSTREAM 0'5% O & DOWNSTREAM FROM RESTRICTIVE WEIR PLATE AND NEAR CIA THE HIGH END OF THE SYSTEM, AS SHOWN. Ln / �M o 5 0120" INV. 695 8T /�111 0120" INV. 695 81' o / o 4- / - 5 ` 0120" INV. 695.60' '•�,/' 0120" INV 695 66' / 1 26,00 LF - 0 �2 95.50' .�,,,:, Q 0.5% 0 ' ,.;PROPOSED ROADWAY&SIDEWALK TO O STR D-102 / PROVIDEACCESSTO SWM FACILITY. / PROPOSED STIR. D-107, A LOWER 015" LOW -FLOW OUTFALL CARRYING THE TREATMENTVOLUME FLOW &SMALLER STORM EVENTS (6.88 LF OF 015' HDPE Qa 3.78%, 11=695.47, 10=695.21) O •. \ _ III -III O ,✓ II PROPOSED 08" LOW -FLOW OUTFALL CARRYING THE 11 TREATMENT VOLUME FLOW TO LEVEL SPREADER D _III (56.90 LF OF 08" HDPE Cal o.5o%, 11=695.u, 10=694.83) L-11�ll O PROPOSED VDOT STD. CLASS Al RIPRAP LINED OUTLET PROTECTION H O / WITH FILTER FABRIC (UNDERLAYMENT L=8', W14, Wz=g', D=i8") III-_ // / %/ 1 /, / ull� / 694.83- BEGINNING _ / / II Y�OF LEVEL SPREADER / 693.6 BOTTOM OF / LEVEL SPREADER \ ,694.6- TOP OF /W TREAM LEVEL SPREADER E P •• �� �• / / � / � � 111E I I E PROPOSED 0120" CMP UNDER DETENTION SYSTEM AT o.So%(P 18" OF COVER REQUIR 10-yr PEAK WSE= 2-yr PEAK WSE= 1-yr PEAK WSE= PROPOSED STIR. C-iog, A HIGH -FLOW BYPASS OIL LARGER STORM EVENT HDPE dal 20.34%, 11= PROPOS OUTF) FLOW & St, PROP( THETREA 745 740 XISTING GRADE 735 735 \ \ PROPOSED SROUND GRAD IINIMUM :D, TYP.) \ 730 730 PROPOSED WEIR F LATE SE THIS SHEET& HEETz FORDE ILS. 729.98 726.78 725.96 \ VDOT IV 4 H-i 725 t RIM=72 .zo 725 \ / 1 \ \ ROPOSI D FLAT V OT CIE. 1 RIPRAP J ELEVATED 018" \ LINED C UTLET P OTECTI N WITH TFALL CARRYING \� STR C-zoz FILTER FABRIC NDERLA MENT (32.51 LF OF 018" VD( T MH-i \ (L=28', Wz=4.5', z=¢z.7, =iW) 725.92, 10=719.51) RIM z724.20 \ 720 719.42 \ 719.40 Q :D STIR. C-ioz, A LOWER 018" LOW -FLOW ,LL CARRYING THE TREATMENT VOLUME IALLER STORM EVENTS (33.4o LF OF 018" HDPE dal 2.66%, 11=719.40, 10=718.51) - - SED STIR. C-207, A 08" LOW -FLOW OUTFALL CARRYING / "MENT VOLUME FLOW TO LEVEL SPREADER'C' (z.go LF \ OF 08" HDPE Qe 2.2%, 11=728.42, 10=728.35) \ PROP SED STR Cao3, A - - - - - - 0z8" HI H-FLOW OLBYPASS BYPAS OUTFA L(59.7z FOF 028 HDPE �aI 0i8"HIGH-710 4.49%, 1=7zg.41, 0=7z6.67 OUTFALLWI"'.F710 8 6zLF OF > > 11=716.57, =712.20) J LLI _1 OJ N Lf) 0)Ln rl W W � N N N N N N 0 0r- r r- r r r r r W W PROFILE SCALES 1"=5' (V) 1"=50'(H) 710 705 700 PROPOSED STIR. E -io& AN HIGH -FL OW BYPASS OUTI W/ VDO ES-i (z3. 7 LF OF 695 0+50 1+00 1+50 2+00 2+50 3+00 SWM FACILITY C SECTION PI Qe7��c\IgytllSYq:b'1Y:71Y:���9q�.'1�:7�c1yq:7:74�1Y➢:7gLI�YY4'! MAINTENANCE INSPECTIONS: ANNUAL INSPECTIONS SHALL BE CONDUCTED IN THE NON -GROWING SEASON DURING THE FALLAND WINTER MONTHS. INSPECTIONS SHALL TRIGGER MAINTENANCE OPERATIONS, AS REQUIRED. MAINTENANCE OPERATIONS MAY INCLUDE, BUT IS NOT LIMITED TO, SEDIMENT REMOVAL, PERIODIC MOWING, REPAIR OFTHE LEVEL SPREADER AND ENSURING A DENSE, HEALTHY VEGETATED GROUNDCOVER. MOWING SHALL BE COMPLETED AT LEAST TWICE A YEAR TO PREVENT FURTHER WOODY GROWTH AND SPOT RE -VEGETATION OFTHE FILTER STRIP IS REQUIRED IN ORDER TO MAINTAIN Ago% MINIMUM COVERAGE RATE. THE CONTRACTOR SHALL CONDUCT THE INSPECTIONS FOLLOWING THE FIRST YEAR THE PROJECT IS COMPLETED, AND THE OWNER SHALL CONDUCT THE INSPECTIONS THEREAFTER. INSPECTIONS SHALL INCLUDE THE FOLLOWING AT MINIMUM: i. ENSURE FLOW PATHS ARE NOT SHORT-CIRCUITED IN THE LEVEL SPREADER AND THROUGH THE VEGETATED FILTER STRIP. z. ENSURE DEBRIS AND SEDIMENT HAS NOT ACCUMULATED. 3. CHECK FOR SCOUR AND EROSION WITHIN THE LEVEL SPREADER SYSTEM AND FILTER STRIP. 4. CHECK FOR FOOT OR VEHICULAR TRAFFIC DAMAGE IN THE STONE. 5. ENSURE VEGETATIVE DENSITY MEETS OR EXCEEDS go% OF THE FILTER STRIP AREA. IN THE EVENT MAINTENANCE IS REQUIRED DURING THE ABOVE NOTED INSPECTIONS, CORRECTIVE MEASURES SHALL BE COMPLETED IMMEDIATELY. JT AILDL(�860I L0F OF 0%11"H PE VDOT PROPOSED STIR. D-101, AN ELEVATED 018" HIGH -FLOW OUTFALL CARRYING LARGER STORM EVENTS (6.6o LF OF Oi8" HDPE dal g.og%, 11=703.50, 10=702.90) PROPOSED WEIR PLATE, SEE THIS SHEET & SHEET zo FOR DETAILS. 705 PROPOSED SWM FACILITY -D', A 0z2o" CMP UNDERGROUND DETENTION SYSTEM (al o.so%. 10-yr PEAK WSE=705.28 2-yr PEAK WSE=704.16 1-yr PEAK WSE=703.48 695 A LOWER 0z5" LOW FLOW OUTFACE PROPOSED STIR. D zo7, PROPOS D CARRYING THE TREATMENT VOLUME FLOW &SMALLER STORMY N SANITARY EVENTS (6.88 LF OF Oi5' HDPE Qa 3.78%, II-695.47, 10=695.21) SEWE PROPOSED 08" LOW -FLOW OUTFALL CARRYING THE TREATMENT VOLUME FLOW TO LEVEL SPREADER'D' PROP SED FLA VDOT C . AI RIPR P LINED (56.go LF OF 08" HDPE (-al 0.50%, 11=6g5.ii, 10=6g4.83) nI ITI P T PPnTF MIMI WITH PII TP PAPPIf- UNDERLAYMEN (MIN. L=g', Ws=6' W2=6', D=z8") J J O 61 O^ M 00 OD W W �t L 00 (D CD c0 c0 c0 c0 (D c0 (0 c0 W L� PROFILE SCALES 1"=5' (V) 1"=50'(H) 0+50 1+00 1+50 2+00 2+50 2+75 SWM FACILITY D SECTION NOTE: WEIR PLATE TO BE SECURELY BOLTED, OR SIMILARLY FASTENED, TO THE DETENTION SYSTEM. 0120" WEIR PLATE'C' DETAIL SCALE: i"=5' 9.54' ELEV OVERFLOW WEIR IS HYDRAULICALLY EQUIVALENT TO AN ORIFICE WITH AN ELEV APPROX. DIAMETER OF 026.53" INSTALL TRASH RACKS ON ALL ORIFICES, TYP. SEE THIS SHEET REINFORCED zz GA. FOR DETAIL, OR EQUIVALENT. STEEL PLATE ELEV.==71g.42' MANUFACTURE / INSTALL ONE (1) 05" LOW -FLOW ORIFICE IN THE STEEL WEIR PLATE ATTHE LOW POINT OF THE DETENTION SYSTEM (INVERT ELEVATION 719.42') UNDERGROUND DETENTION SYSTEM CONSTRUCTION NOTES: CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. 2. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 3. REFER TO THE APPROVED CONSTRUCTION PLANS FOR ANY DETAILED SITE INFORMATION. 4. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 5. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE UNDERGROUND DETENTION SYSTEM ON A DAILY BASIS. FACILITY CONSTRUCTION: 1. UNDERGROUND DETENTION SYSTEMS SHALL ONLY BE ACTIVATED AFTER THE CONTRIBUTING DRAINAGE AREAS ARE COMPLETELY STABILIZED. IF THE LOCATION OF THE UNDERGROUND DETENTION SYSTEM WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THE CONTRACTOR SHALL DE -WATER, DREDGE AND RE -GRADE THE SEDIMENT CONTROL DEVICE TO THE DESIGN DIMENSIONS REQUIRED FOR THE UNDERGROUND DETENTION SYSTEM. 2. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT STAGING AREAS WHEN POSSIBLE. 3. THE CONTRACTOR SHALL ADHERE TO THE MANUFACTURER's MINIMUM REQUIREMENTS AND THE REQUIREMENTS SHOWN ON THIS PLAN. FACILITY MAINTENANCE: MAINTENANCE OF THE UNDERGROUND DETENTION SYSTEM(S) 15 DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITY. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: t. ENSURE SEDIMENT ACCUMULATION DOES NOT OCCUR WITHIN THE PIPE SYSTEM. 2. INSPECT THE CONDITION OF STORMWATER INLETS TO THE PIPE SYSTEM FOR MATERIAL DAMAGE. 3. INSPECT THE PIPE SYSTEM FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. 4. INSPECT OUTFALL CHANNEL(S) FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC. 5. INSPECT CONDITION OF ALL TRASH RACKS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. B. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION. 7. INSPECT THE ACCESS MANHOLES TO ENSURE THEY CAN BE OPENED AND OPERATED. 8. REPAIR AND REPLACE AS NECESSARY. FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION SYSTEM(S) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OFTHE UNDERGROUND DETENTION SYSTEM'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED. 5. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION. 6. ATTHE TIME OF THE PIPE INSTALLATION. 7. AFTER PIPE INSTALLATION, BUT PRIORTO PLACING BACKFILL & FILL OVER THE SYSTEM. 8. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) NOTE: WEIR PLATE TO BE SECURELY BOLTED, OR SIMILARLY FASTENED, TO THE DETENTION SYSTEM. 0120" WEIR PLATE'D' DETAIL SCALE: i"=5' OVERFLOW WEIR IS HYDRAULICALLY EQUIVALENTTO AN ORIFICE WITH AN APPROX. DIAMETER OF 022.64" INSTALL TRASH RACKS ON ALL m ELEV.=705.50' (TOP OF PIPE'. ELEV ORIFICES, TYP. SEE THIS SHEET REINFORCED Iz GA. FOR DETAIL, OR EQUIVALENT. STEEL PLATE ELEV.=695-50' (BOTTOM OF PI MANUFACTURE / INSTALL ONE (1) 02. 25" LOW -FLOW ORIFICE IN THE STEEL WEIR PLATE AT THE LOW POINT OF THE DETENTION SYSTEM (INVERT ELEVATION 695.5o) No. 35791 9/22/22 :'S'In KTAT. Sly( Z z J Q N Z W u 0 U C N CO N 11� W ( z Qy � H d z o > .. Lu LuOf W w 0� N N W N N ~ M N a rl ON L z Lu ti C M G Cy N z Lu 1 W N N Q, ^ N z J w\Q / J I- _J 0 J Lu w p > Lu J U L1..1 Q Lu Q Lu ulct) I..L <<> I- ZLU w O U) J oC cn 1J Lu z O O V / N u w J I Lu a Ln JOB NO. 182154 SCALE AS SHOWN SHEET NO. 18 WET POND CONSTRUCTION NOTES: FACILITY PLANTING SPECIFICATIONS: 1. THE CONTRACTOR SHALL ESTABLISH AND MAINTAIN A VEGETATIVE COVERAGE IN THE POND AND ITS BUFFER. 2. THE CONTRACTOR SHALL ALSO INSTALL THE WETLAND SHELF AND AQUATIC BENCH PLANTINGS, AS REQUIRED, AND USE NUTRIENT RICH SOIL IN THESE AREAS TO PROMOTE HEALTHY GROWTH AND ROOT DEVELOPMENT. 3. PLANT SELECTION SHALL PROMOTE DIVERSE WILDLIFE AND WATERFOWL USE WITHIN THE STORMWATER WETLAND, AQUATIC BENCH AND BUFFERS. 4. WOODY VEGETATION MAY NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET FROM THE PRINCIPAL SPILLWAY STRUCTURE. 5. A VEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 25 FEET OUTWARD FROM THE MAXIMUM WATER SURFACE ELEVATION OF THE WET POND. PERMANENT STRUCTURES (E.G., BUILDINGS) SHALL NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. EXISTING TREES SHALL BE PRESERVED IN THE BUFFER AREA DURING CONSTRUCTION IF POSSIBLE. 6. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY. THE DENSITY OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHALL BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOT BALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. 7. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. 2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS). 3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 12505TREET, NW, SUITE 500, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). 6. REFER TO THE APPROVED CONSTRUCTION PLANS FOR ANY DETAILED SITE INFORMATION. 7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 8. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN. 9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED. 10.ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11.PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. 12.THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE DESIGNER. 13.MINOR FIELD ADJUSTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALLAND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER. 14.NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN. 15.PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT CRAMPING ROOT STOCK. 16.THE CONTRACTOR SHALL MAINTAIN A ONE 1 CALENDAR YEAR 90%CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR. 17.THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. 18.THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONSTRUCTION: 1. THE CONTRACTOR SHALL USE THE WET POND AS AN E&5 CONTROL STRUCTURE, IF SHOWN IN THIS MANNER ON THE APPROVED ESC PLANS. IF APPLICABLE, THE WET POND SHALL SERVE AS A SEDIMENT BASIN DURING PROJECT CONSTRUCTION. IF THIS IS DONE, THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENT VS. WATER QUALITY TREATMENT REQUIREMENT). INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION WET POND IN MIND. THE BOTTOM ELEVATION OF THE WET POND SHALL BE LOWER THAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBID WATERS WHEN THE BASIN IS BEING CONVERTED INTO A WET POND. 2. WET PONDS SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IF THE PROPOSED POND SITE WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THE CONTRACTOR SHALL DE -WATER, DREDGE AND RE -GRADE THE SEDIMENT CONTROL FACILITY TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. 3. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT STAGING AREAS WHEN POSSIBLE. 4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE. 5. THE CONTRACTOR SHALL INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION, INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES. ALL AREAS SURROUNDING THE POND THAT ARE GRADED OR DENUDED DURING CONSTRUCTION MUST BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 6. THE CONTRACTOR SHALL ALSO EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE. 7. THE RISER AND APPLICABLE OUTFLOW STRUCTURES SHALL BE INSTALLED, AND THE CONTRACTOR SHALL ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION. 8. THE CONTRACTOR SHALL CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8-TO 12-INCH LIFTS, COMPACTION SHALL BE COMPLETED IN LIFTS WITH APPROPRIATE EQUIPMENT. THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 BELOW: Table 14.4. Clay Liner Specifications Property Test Method unit Specification Permeability ASTM D-2434 Cmisec 1 x ItTCI Plasticity Index of Clay ASTM D4231424 % Not less than 15 Liquid Limit of Clay ASTM D-2216 % Not less than 30 Clay Parades Passing ASTM D422 % Not less than 30 Cla Cam ction ASTM D-2216 % 95% of standard rodor tl bounce: Virginia bTwmwatermanagement HanODOOK(Tabs) 9. EXCAVATION AND GRADING TO THE APPROPRIATE ELEVATIONS AND DESIRED CONTOURS SHALL BE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OFTHEPOND. 10.THE EMERGENCY SPILLWAY SHALL BE CONSTRUCTED IN CUT WHERE POSSIBLE, OR IN STRUCTURALLY STABILIZED SOILS. 11.THE OUTLET PIPES INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION SHALL BE INSTALLED. 12.EXPOSED SOILS SHALL BE STABILIZED WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE POND BUFFER. ALL AREAS ABOVE THE NORMAL POOL ELEVATION SHALL BE PERMANENTLY STABILIZED BY HYDROSEEDING OR SEEDING OVER STRAW. 13.THE POND BUFFER AREA SHALL BE PLANTED WITH A VEGETATIVE GROUND COVER AND THE CONTRACTOR SHALL THEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. 14.ALL CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN SPECIFICATION NUMBER 14. FACILITY MAINTENANCE: MAINTENANCE OF THE WET POND(S) 15 DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE POND. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: 1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE FOREBAY. 1. MONITOR THE GROWTH OF WETLANDS, TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE. 2. INSPECT THE CONDITION OF STORMWATER INLETS TO THE POND FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 3. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 4. INSPECT POND OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC. 5. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. 6. INSPECT CONDITION OF ALL TRASH RACKS OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. 7. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 8. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE NEEDED REPAIRS IMMEDIATELY. 9. REPAIR AND REPLACE AS NECESSARY. 10.PLEASE SEE THE TABLE BELOW FOR ADDITIONAL MAINTENANCE MEASURES ABOVE AND BEYOND THOSE OUTLINED ABOVE: Table 14.6. Typical Wet Pond Maintenance Tasks and Frequency Maintenance Items Frequency • Mowing -M1ce a year Quarterly or after major storms • Remove debris and blockages (>7 inch of rainfall) • Repair undercut, eroded, and bare soil areas • Mowing Twice a year • Shoreline cleanup to remove trash, debris and fbatables • A full maintenance inspection Annually • Open up the riser to access and test the valves • Repair broken mechanical components, it needed One time -during the • Pond buffer and aquatic bench reinforcement plantings second year talbwi construction • Faeba Sediment Removal Every 5 to 7 years • Repair pipes. the riser and Olwa as needed From 5 to 25 years FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE BASIN(S) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE WET POND'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&$ CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. WET POND INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE($). 6. PLANTING AND VEGETATIVE STABILIZATION PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) COUNTY OF ALBENLIRLE Department of Community Development Construction Record Drawings (As -built) for VSMP The following is a list of information required on construction record drawings for stomtwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional will of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet C. The constructed location of all ireros associated with each facility, and the inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: I. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures -Display the installed type of drainage swctures, culvert/pipe size, welts, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. R. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design 9. Ditch Lines -Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements -Show all platted easements with dead book references labeled Facilities and drainage must be within platted easements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions -Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design 12. Material layers - biofdter media, stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofilter media must be an approved state mix. 13. Access roads -show location of access roads, surface treatment. drainage, etc, as applicable. 14. Compaction reports are requited to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functiotJing.000 Perforated 2'• ¢inc plated nook (�O ntlached with Ire• rantener Isometric pipe L'a' HOPE pleb (opllonnq calve rl 'i'"�' �ltn HDPF riruai urnl pinwlln WAIF. O B-1!9' holu• and 1/<" Plain OO mmufavlurnd by Pt•xi.ic Solutions [no or equal 0000 ..}4 n .•+Gf'P;7;e t _-t.S"Y-,r'?tx' • ¢Iwea with HDPr nl n,nl ,�rnl pinaltr with 2-1/B' holee and 1/4• plate .-C((loll rvauulectured by Plastic nlulmna Inn or nganl 5; a' d�a huh 0 0 o o o OO ° eingre 811P EICYOtIOn uri!Ica LPR.CDFRRT�^,CACTFOLUTiTION..0 INC. - nr7 av7-saz7 ne ymMr-eaW.0 enin SECTION A-9: TYPICAL GRAPffiCAL DE?AII.S 5-- Homogeneous till 1 I Cut off trench-4' below atitgble � material Soil or rock L - - _ _ _ - - - - - - � TYPICAL HOMOGENEOUS EMBANKMENT 'Pine outictCoorse� fijtrtr collector drown o s FoundaGcn drain FOUNDATION DRAIN drain Send, gnrd or nich drain Oink! too 4�7 r9nsflion filler CHIMNEY DRAIN Transition fill Rock or grovel Blanket drdir, BLANKET DRAIN Rode or grovel groin Tronaition filter TOE DRAIN Figure A -la. Homogeneous Embankments wvSeepage Controls EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE'S SOILS, A SITE VISIT, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQAPPENDIX A: EARTHEN EMBANKMENT, THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGN PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW AND ON THIS SHEET, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT MINIMUM. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON IN THIS PLAN. BERMS AND SPILLWAYS SHALL 8E STABILIZED WITH EC-3 MATTING & RIPRAP AND THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPARED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS. VA96RBEk STORMWATER DESIGN SPECIFICATION NO.2 SHEET FLOW TO FILTER OR OPEN SPACE KEY LEVEL SPREADER INTO EXISTING GRADE RIPRAP PLUNGE POOL h RIPRAP APRON j /1 ��� 8• X °" TREATED 1- jM)Jt �'�- TIMBERS OR CONCRETE uP i -:1-O - -�__ '--_:•_ LENGTH OF LEVEL SPREADER o LIP TO BE BASED ON DESIGN FLOW �- 1 AND ALLOWABLE VELOCITY TOP OF LEVEL SPREADER BFiALL BE FLAT s 1-3 N. COURSE AGGREGATE OR OTHER LINING AS DESIGNED FOR STABILITY PLAN VIEW DIMENSION r fiED LXJ IR�ED EJtFTNO CPApE stF r30:17 on LEGS IF VECETaTM DESIGN DKiOHARG'E FILTER G7RP OR 00.5fiRY® - OPEN SPACE FggT 10 FEET L coo. 2• MIN hwN 2%3 MIN to MIN 3 MIN ice. 72 f MIN. DEPTH BP.SED O REQUIRED STONE SIZE I I-II-II�i�=ni-t�,.•i„ i •il-f ,I�i�r=h- SECTION P.-A - Figure '.4: Level Spreader: Pipe or Channel Flats- to Filter Strip or m=r:�Con serred Open Space LEVEL SPREADER NOTES: 1. FIRST 10' FROM LEVEL SPREADER LIP MUST BE 2% OR LESS. 2. TIE BACK ENDS OF LEVEL SPREADER INTO THE SLOPE TO AVOID SCOURING. B. CONTRACTOR SHALL NOTIFY COLLINS ENGINEERING A MINIMUM OF.WEEK PRIOR TO THE CONSTRUCTION OF ANY LEVEL SPREADER. COLLINS ENGINEERING'S PRESENCE IS REQUIRED AT THE TIME OF THE LEVEL SPREADERS' CONSTRUCTION SO THAT THE LEVEL SPREADERS' FINAL LOCATIONS CAN BE FIELD VERIFIED. FINAL LOCATIONS MAY VARY SLIGHTLY FROM THE APPROVED PLANS IN ORDER TO PRESERVE A LARGE TREE($). y. CONTRACTOR SHALL USE AGEOTEXTILE FILTER FABRIC UNDERLAVMENT BELOW THE PROPOSED LEVEL SPREADER STONE. THE GEOTEXTILE FILTER FABRIC SHALL BE TENSAR TX-5 TRIANGULAR GRID, OR EQUIVALENT. Vegetated Filter Strips Planting Requirements Vegetated Filter Strips shall be planted at such a density to achieve a 90%grass/herbaceous cover after the second growing season. Vegetated Filter Strips shall be seeded, not sodded. Seeding establishes deeper roots, and sod may have muck soil that is not conducive to infiltration ( Wisconsin DNRr 2007) . The filter strip vegetation shall consist of turf grasses, meadow grasses, other herbaceous plants, shrubs, and trees, as long as the primary goal of at least 90% coverage with grasses and/or other herbaceous plants is achieved. Vegetation at the toe of the filter, where temporary P ondin9 may occur behind the permeable berm, shall be able to withstand both wet and dry periods. The planting areas can be divided into zones to account for differences in inundation and slope. Additionally, the trees selected to be planted shall be 10' on -center and shall be an even mix of River Birch (Betula Nigra), Red Maple (Ater Rubrum) and Sweetgum (Liquidambar Styraciflua). Table Z4. Ve"ted Filter Strip Materials Specifications Material Specification Quantity Pea Graver (#8 or ASTM equivalent) or Diaphragm should be 2 feet wide, 1 Gravel where steep (6% +) use dean bank -run foot deep, and at least 2 inches Diaphragm VDOT #57 or ASTM equivalent (1-inch below the edge of pavement_ maximum). Permeable 40% excavated sot, 40% sand, and 20°/D pea gravel to serve as the media for the Berm berm. Fitter Fabric Geotextile material appropriately selected for placement under rip rap or gravel to effective) separate the stone from the round below - Engineered Level Spreader lip should be concrete, metal, timber, or other rigid material; Level Reinforced channel on upstream of lip: VDOT EC-3- Spreader See Hathaway and Hunt (2006) or Henrico County Program Manual for attemate designs. Erosion Control Where flow velocities dictate, use woven biodegradable erosion control fabric or Fabric or mats that are durable enough to last at least 2 growing seasons- (e-g., VDOT Macon Erosion Control matting EC-3). If existing topsoil is inadequate to support dense tart growth, imported top soil (loamy sand or sandy loam texture), with less than 5°!° clay content, corrected pH Topsoil at 6 to 7, a soluble salt content not exceeding 500 ppm, and an organic matter ' Y ' content of at least 2% be used. Topsoil shall be uniformly distributed and lightly compacted to a minimum depth of 6 to 8 inches Compost �be derived from plant material and provided by a member of the Compost U.S. Composting Seal of Testing Assurance (STA) program, as outlined in Stormwater Design Specification No. 4. StOfR1RdXT1d ROUND SERIES TRASH RACK CONCRETE MANHOLE STANDARD e01NCH RACK SHOWN DIMENSIONS IN INCHES (OR EQUIVALENT) PLAN SIDE VIEW StormRaxTM Round Series for Concrete Manhole hn Na Earn drag prat Min ID 11111111101111 IIS-za 17y -taY. ze za ao as36 u . taY, 403I 36 43 RS48 271' Ill 54 . 408 57 IlS-tD 27 raye 66 sit m Plastic SOIU[lOtLS, Inc. CUS70AER . � ro tlmr alga, wo-nclestrr, va 22604 738 MCCIIee Rd. Wlndlerv, VA zze08 ;877) 877-s727 phone pK(1ECT: saol az-zz ro fax htltr.//www.plaulr-sdutwn.mm MIPE ttrnuGruaa4 PLla11q OY Plank agrUTIpM9, K OUM2R9ECf10• - REMOvaelt roRaccEss ISOMETRIC CONCRETE STRUCTURE DIMENSIONS INSIDE STRUCTURE DIMENSION OUTSIDE STRUCTURE DIMENSION avaLaeLe ovnorta CROSS BRACING FOR OVERHANG, HOPE ANTI -VORTEX PLATE DATE" onavm e'r rpPo BY: DETAIL LeLU t SCOTT/R. CbLLINS'Z 10 No. 35791 9/22/22 �sst ON L ZO Q Z w � OO � � m N N w � vl J � u Z Q c� z o w N N ~ T N � N N L9 � rn n I C 182154 AS SHOWN SHEET N0. 19 A 36"0 MAX., HS-25 ACCESS CASTING WITH GRADE RINGS AS REQUIRED, TO BE PROVIDED AND INSTALLED BY TEMPORARY COVER FOR CMP CONTRACTOR. MAY BE TOP MOUNTED CONSTRUCTION LOADS PROTECTION (AS SHOWN) OR RECESSED. 0 RIM/FINISHED p d FINISHED SLAB =�_- _- GRADE GRADE _-_-_-_ _� VARIES O HUGGER HEIGHT OF a iv FLAT GASKET COVER FT '- e I° a --I o___� SINGLE BAR, BAND _ o m 2--. a a �_-_,.y__I_��_ < , BOLT AND STRAP (SBBS) q-L ui iil T i iL -111- i a . . -1 GASKET MATERIAL 0 CMP RISER SUFFICIENT TO PREVENT a -- CONSTRUCTION LOADS SLAB FROM BEARING ON w FLAT GASKET RISER TO BE PROVIDED BY o FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER CONTRACTOR. OB 11" TYP. < rn THE TOP OF THE PIPE. THE HEIGHT -OF -COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW. THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED SECTION VIEW CONNECTION DETAIL (SBBS) 2 2/3"xl/2" RE -ROLLED END HEL-COR PIPE GENERAL NOTES: 1. JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4. 2. BAND MATERIALS AND/OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRESENTATIVE FOR AVAILABILITY. 3. BANDS ARE SHAPED TO MATCH THE PIPE -ARCH WHEN APPLICABLE. 4. BANDS ARE NORMALLY FURNISHED AS FOLLOWS: • 12"THRU 48" 1-PIECE • 54" THRU 96" 2-PIECES • 102" THRU 144" 3-PIECES 5. BAND FASTENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS. 6. ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2 2/3"x1/2" 7. DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES. 8. ORDER SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE). H-12 HUGGER BAND DETAIL NOT TO SCALE 20 MIL PE IMPERMEABLE LINER OVER TOP OF PIPE (IF REQUIRED) TYPICAL SECTION VIEW NOT TO SCALE LIMITS OF REQUIRED BACKFILL " SEE TYPICAL ,CKFILL DETAIL )TES NOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE PROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFERTOTHE T REON�H CONDD lylITIOENIAL PIPE DETENTION DESIGN GUIDE FOR MBANKOMENT COND�ITIOIN N FINAL BACKFILL 7 ' 6a yam\ INITIAL BACKFILL z w / w 58 7 4 O w wPt \ C BEDDING FOUNDATION 2 r / INITIAL FILL ENVELOPEv 1a�� DIAMETER MIN. COVER CORR. PROFILE 6"-10" 12" 1 1/2" x 1/4„ 12"48" 12" 2 2/3" x 1/2" 54"-96" 12" 3" x 1", 5" x 1" 102"-144" D/8 3" x 1',5" x 1" BACKFILL REQUIREMENTS FOLLOW THE GUIDELINES OF AASHTO LRFD BRIDGE DESIGN (SEC 12) AND CONSTRUCTION (SEC 26) 1 MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER THE PIPE. THE MINIMUM TRENCH WIDTH (12.6.6.1): PIPE s12":D+16" PIPE > 12": 1.5D + 12" 1a MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12.6.6.2): PIPE < 24": 3.013 PIPE 24" -144": D + 47 PIPE > 144": D + 10'0" 2 THE FOUNDATION UNDER THE PIPE AND SIDE BACKFILL SHALL BE ADEQUATE TO SUPPORT THE LOADS ACTING UPON IT (26.5.2). 3 BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, AND A MINIMUM OF TWICE THE CORRUGATION DEPTH IN THICKNESS, WITH THE MAXIMUM PARTICLE SIZE OF ONE-HALF OF THE CORRUGATION DEPTH (26.3.8.1, 26.5.3). 4 CORRUGATED STEEL PIPE (CSP / HEL-COR). 5 HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION (26.5.4). 5a INITIAL BACKFILL FOR PIPE EMBEDMENT TO MEET AASHTO A-1, A-2 OR A-3 CLASSIFICATION, OR APPROVED EQUAL, COMPACTED TO 90% STANDARD PROCTOR (T 99). MAXIMUM PARTICLE SIZE NOT TO EXCEED 3" (12.4.1.2). ALL LIFTS PLACED IN A CONTROLLED MANNER. IT IS RECOMMENDED THAT LIFTS NOT EXCEED AN 8" UNCOMPACTED LIFT HEIGHT TO PREVENT UNEVEN LOADING, AND THE LESSER OF 1/3 THE DIAMETER OR 24" AS THE MAXIMUM DIFFERENTIAL SIDE -TO -SIDE (26.5.4). 6 INITIAL BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE). SEE TABLE ABOVE. 6a TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT (12.6.6.3). 7 FINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECT PLANS AND SPECIFICATIONS PER THE ENGINEER OF RECORD (26.5.4.1). NOTES: • GEOTEXTILE SHOULD BE CONSIDERED FOR USE TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEER). • FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA./2 BUT NO LESS THAN 12", OR 36" FOR PIPE DIAMETERS 72" AND LARGER. • CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1). TYPICAL BACKFILL DETAIL NOT TO SCALE REINFORCING TABLE "BEARING 0 CMP A B H REINFORCING PRESSURE RISER (PSF) 24" q'0 26" #5 @ 10" OCEW 2,540 4,x4, #5 @ 10" OCEW 1,900 30" 4'-6"0 32' #5 @ 10" OCEW 2,260 4'-6" x 4,-6" #5 @ 9" OCEW 1,670 36" 5'0 38" #5 @ 9" OCEW 2,060 5' x 5' #5 @ 8" OCEW 1,500 4211 5'-6"0 #5 @ 8" OCEW 1.490 5'-6" x S-6"� #5 @ 8" OCEW 1,370 46 &0 50" #5 @ 7" OCEW 1.210 6' x 6' #5 @ 7" OCEW 1,270 GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC. ", PIPE SPAN, INCHES AXLE LOADS (kips) 1850 1 50-75 1 75-110 1 110-150 MINIMUM COVER (FT) 2.0 2.5 3.0 3.0 12-42 48-72 3.0 3.0 3.5 4.0 78-120 3.0 3.5 4.0 4.0 126.144 3.5 4.0 4.5 4.5 `MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE. CONSTRUCTION LOADING DIAGRAM NOT TO SCALE ASSUK. ACCESS CASTING NOT SUPPLIED BY CONTECH 1p,. /> CO A e #4 DIAGONAL TRIM I 11 #4 DIAGONAL TRIM BAR (TYP. 4 PLACES), I I BAR (TYP.4 PLACES), _ � �SEE NOTE 7. SEE NOTE 7. ----- - _-It_ C==---Il OPENING IN PROTECTION SLAB FOR ACCESS INTERRUPTED BAR SPECIFICATION FOR CORRUGATED STEEL PIPE -ALUMINIZED TYPE 2 STEEL REPLACEMENT, SEE SCOPE HANDLING AND ASSEMBLY NOTE 6. THIS SPECIFICATION COVERS THE MANUFACTURE AND SHALL BE IN ACCORDANCE WITH RECOMMENDATIONS OF THE INSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED IN NATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA) THE PROJECT PLANS. UNDERGROUND DETENTION SYSTEM NOTES: INSTALLATION 1. TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES, MATERIAL INCLUDING THOSE LOCATED ALONG THE WEIR PLATE WITHIN SHALL BE IN ACCORDANCE WITH AASHTO STANDARD THE UNDERGROUND DETENTION SYSTEM. THE ALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE SPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 26, DIVISION II 2. DETENTION SYSTEM's WEIR PLATE TO BE APPLICABLE REQUIREMENTS OFAASHTO MZ74ORASTMA929. OR ASTM A798 AND IN CONFORMANCE WITH THE PROJECT PLANS PRE -MANUFACTURED AND DELIVERED TO THE SITE. WEIR AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR PLATE SHALL BE BOLTED TO THE UNDERGROUND DETENTION PIPE CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE SYSTEM, OR SIMILARLY FASTENED, TO ENSURE IT HAS A WITH THE SITE ENGINEER. SECURE CONNECTION. THE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THE 3. ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM A760. THE IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO THE VICINITY OF THE UNDERGROUND DETENTION SYSTEM PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ON FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES. SHALL BE REVIEWED AND APPROVED BY THE STRUCTURAL THE PROJECT PLANS. ENGINEER AND A GEOTECHNICAL ENGINEER. 4. THE ADJACENT PUBLIC ROAD WILL SERVE AS ACCESS TO ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THE THE UNDERGROUND DETENTION SYSTEM. 5. CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING UNITED STATES. ANY QUESTIONS CONCERNING THE UNDERGROUND DETENTION SYSTEM. 6. ALL FILL EMBANKMENT MATERIAL SHALL CONSIST MATERIAL SPECIFICATION PREDOMINANTLY OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS NOT TO SCALE BEFORE COMPACTION OVER THE ENTIRE AREA IN ACCORDANCE WITH THE CURRENT VDOT ROAD AND BRIDGE SPECIFICATIONS. 7. VDOT STD. IS-1 & ST-1 ARE REQUIRED ON THE UNDERGROUND UNDERGROUND DETENTION SYSTEM STRUCTURES, INCLUSIVE 1'4" 2y2' OF THE BYPASS STRUCTURES. 7 8. ALL FILL SHALL BE COMPACTED IN ACCORDANCE WITH MINIMUM PIPE MANUFACTURER REQUIREMENTS AND TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE COMPACTION IS ALL STEEL PER REACHED AND MAINTAINED. Y4" (#6) REBAR CAN BE CUT FLUSH - ASTM A36 9. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TO OUTSIDE OF RAIL TEST -DIG AT THE EXISTING INLETS & OUTFALLS TO (BAR LENGTH = 16Y4") OR BAR CAN 4 > CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED EXTEND BEYOND RAILy"± r FABRICATION TOLERANCE: ±Y4' GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT _ o FLAT BAR AND REBAR: MILL COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE TOLERANCE APPLIES HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING 3/8„ TYR AND CONSTRUCTION. 10. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION - INDUSTRY (29 CFR PART 1926). 12" TYP. HOLE w/ %q" REBAR RUNG, 11. CONTRACTOR SHALL PROVIDE ADEQUATE STONE BACKFILL CENTER TO CENTER WELD REBAR TO RUNG ON FOR THE UNDERGROUND DETENTION SYSTEM PIPES IN RUNG SPACING O OUTSIDE OF STEEL RAIL ACCORDANCE WITH THE MANUFACTURER's REQUIREMENTS. - o PLAN FRONT 48"0 to 90"0 FITTING REINFORCEMENT MAY BE REQUIRED BASED ON HEIGHT OF COVER AND LIVE LOAD CONDITION TYPICAL MANWAY DETAIL NOT TO SCALE 2y" x %" FLAT BAR SIDE RAIL PLAN SIDE NOTES: 1. LADDERS CAN BE MADE IN 20'-0" STANDARD LENGTHS AND CUT TO FIT 2. ALL MATERIAL TO MEET ASTM A36 3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM A-123 AFTER FABRICATION IS COMPLETE STANDARD LADDER DETAIL NOT TO SCALE PART NO. HALAGVL16 PROVIDE MINIMUM OF 4 ATTACHMENT ANGLES (2 ON EITHER SIDE OF LADDER RAIL) TO CONNECT LADDER TO RISER EXTENSION RISER w/ LADDER AND STEPS IF EXTENSION IS REQUIRED RISER w/ LADDER AND STEPS MAINLINE CMP 23xY2,5x1,3x1,ETC. NOTE: THIS DRAWING IS INTENDED TO APPLY TO LADDERS INSTALLED IN RISERS HAVING A DIAMETER OF 30" OR LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED ACCESSIBILITY, THE PRACTICALITY AND SUITABILITY OF UTILIZING RISERS SMALLER THAN 30" DIAMETER AND/OR INCORPORATING LADDERS IN THESE SMALLER DIAMETER RISERS SHOULD BE ADDRESSED BY THE OWNER AND PROJECT ENGINEER 6" MAX MAX. -� -- tt-- 2" COVER r---- :�� I (TYP) II I �� l � I tiG0 e\ I111♦♦)// I ♦♦i� iOPENING IN t/_ fPROTECTION -t---- SLAB FOR r ACESS kREINFORCING, ---� I I I STANDARD STANDARD REINFORCING, REINFORCING, SEE TABLE SEE TABLE ROUND OPTION PLAN VIEW NOTES: 1. DESIGN IN ACCORDANCE WITH AASHTO, 17th EDITION AND ACI 350. 2. DESIGN LOAD HS25. 3. EARTH COVER = V MAX. 4. CONCRETE STRENGTH = 4,000 psi 5. REINFORCING STEEL = ASTM A615, GRADE 60. 6. PROVIDE ADDITIONAL REINFORCING AROUND OPENINGS EQUAL TO THE BARS INTERRUPTED, HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE SAME PLANE. "NOTE: WHEN RISER EXTENSIONS ARE USED, THE PLANT SHOULD CUT 3" FROM THE SIDE RAILS AS SHOWN "3" FROM BOTTOM OF LADDER O}-( RAIL TO RISER JOINT OI / "3" FROM TOP OF LADDER RAIL TO RISER JOINT 0 LADDER RAILS AND RUNGS (2)Y4" FILLET WELDS 1" LONG ATTACHMENT ANC L5" x 3" xY4" x 16" LONG AT V-0" MINIMUM OF 4 ANGLES P SPACING. LONG LEG TO LADDER SECTION 2 EACH SIDE '( o PROJECT OUT WELD TOP LADDER) 6' MAX. SPACI AND BOTTOM OF 3" LEG TO EACH VERTICAL CORRUGATION CREST (THESE ANGLES SHOULD BE USED FOR LARGER DIAMETER MAINLINES WHERE ADDITIONAL STEPS ARE NEEDED) 6" FROM RUNG TO RISER JOINT 6" FROM RUNG TO RISER JOINT SECTION A -A RISER LADDER DETAIL NOT TO SCALE RISER NORMALLY CMP WITH 23," xY2" CORRUGATIONS (4)Y6" FILLET WELDS FROM EACH ANGLE TO CORRUGATION CREST (2 WELD EACH SIDE) L3" x 3" x 16" 5Y2' LONG II I II I II I II II II II - OB INTERRUPTED E REPLACEMENT, SEE NOTE 6. SQUARE OPTION PLAN VIEW 7. TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS A MINIMUM OF 12" BEYOND OPENING, BEND BARS AS REQUIRED TO MAINTAIN BAR COVER. 8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND INSTALLED BY CONTRACTOR. 9. DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LAND SURVEYORS, ENDWELL, NY. MANHOLE CAP DETAIL NOT TO SCALE (4) Y6" FILLET WELDS FROM EACH ANGLE CORRUGATION CREST (2 WELDS EACH SIDE) (4) L3" x 3" x 3/6" _ 5Y2" LONG (2)y" FILLET WELDS 1" LONG FROM EACH ANGLE TO LADDER RAIL LADDER RAILS AND RUNGS I,Idkq A (4)Y,s' FILLET WELDS FROM EACH ANGLE TO - CORRUGATION CREST (2 WELDS EACH SIDE) L3"x3"LNG 5Yz" LONG I -- -ten - ELEVATION LADDER AND RUI No. 35791 !n 9/22/22 w�1 Zz J zz w 2:O O O � m N N n uJ W O P T z .. in w LnLu L z zIT—1' w (` C C'7 G C'7 Q N z 1W 7 Lu N 0 Wc:)Q0;b N z w W Q 0 > zLd C) J 0 r 0Lu O > ur) JLLJ H� � QLu ~� W " cn Y Q z W � = O In � z Lu Z Lu w z UJ 0 - c~n W z J °C I- r n W v CD J� Lu Lu (D 0 z z O 0 O Q Z) N u < V / W w x a Ln JOB NO. 182154 SCALE AS SHOWN SHEET NO. 20 PLANTING SCHEME FOR EVERY 400sf (OR 20'x2O' SECTION) SHALL CONTAIN THE FOLLOWING: MITIGATION MAINTENANCE PLAN: THE WATERSIDE 50% OF THE BUFFER: AN ANNUAL INSPECTION SHALL BE CONDUCTED IN THE NON -GROWING SEASONS DURING THE FALL OR WINTER MONTHS. THE ONE (1) 14" - 2" CALIPER NATIVE CANOPY TREE OR LARGE EVERGREEN AT 6' INSPECTION SHALL TRIGGER MAINTENANCE OPERATIONS, AS REQUIRED. MAINTENANCE OPERATIONS MAY INCLUDE, BUT IS NOT LIMITED \ / / \ \/ \ \" TWO (2) J"- 1}" CALIPER NATIVE UNDERSTORY TREES OR EVERGREENS AT 4' OR ONE (1) NATIVE UNDERSTORY TREE AND TO, TRASH REMOVAL AND ENSURING A DENSE, HEALTHY GRASS / FOREST GROUNDCOVER. MOWING & BUSH HOGGING MAY BE ALLOWED \ TWO (2) LARGE SHRUBS AT 3'-4' WITHIN THE STREAM BUFFER AND MITIGATION AREAS FOR THE SOLE PURPOSES OF REMOVING OVERGROWN INVASIVE SPECIES AND FOR THREE (3) CLEARING THE TRAIL. HOWEVER THE MOWING & BUSH HOGGING SHALL BE LIMITED TO A MAXIMUM OF FOUR TIMES A YEAR. THE SMALL NATIVE SHRUBS OR WOODY GROUNDCOVER AT 15"-18" THE LANDWARD SMALL THE BUFFER: CONTRACTOR SHALL CONDUCT THE ANNUAL INSPECTION FOLLOWING THE FIRST YEAR THE PROJECT IS COMPLETED, AND THE OWNER SHALL CONDUCT THE ANNUAL INSPECTIONS THEREAFTER.-�\ NATIVE BARE ROOT SEEDLINGS OR WHIPS AT 1,210 STEMS/ACRE, APPROXIMATELY 6' O.C. ` \ (600 MINIMUM PLANT SURVIVAL REQUIRED AFTER TWO GROWING SEASONS) OR MITIGATION SCHEDULE: y- r � THE CONTRACTOR SHALL SCHEDULE A MEETING ONSITE WITH THE COUNTY ENGINEER AND THE OWNER PRIOR TO ANY MITIGATION , CONTAINER GROWN NATIVE SEEDLING TUBES AT 700 PER ACRE APPROXIMATELY 5' O.C. r r (490 MINIMUM PLANT SURVIVAL REQUIRED AFTER TWO GROWING SEASONS) PLANTINGS TO FINALIZE THE LOCATION AND QUANTITIES. IN THIS MEETING THE CONTRACTOR SHALL PROVIDE AN APPROXIMATE DATE FOR THE MITIGATION PLANTINGS, WHICH SHALL OCCUR IN THE FALL OR SPRING. PLANTINGS SHALL ONLY OCCUR AFTER INITIAL UPLAND PLANTING NOTES: ESC MEASURES ARE IN PLACE. MITIGATION PLANTINGS SHALL BE COMPLETED PRIOR TO THE FULL RELEASE OF THE MITIGATION BOND. 1. ALL MITIGATION PLANTINGS SHALL COMPLY WITH THE RIPARIAN BUFFERS GUIDANCE MANUAL BY CBLAD. 2. ALL MITIGATION PLANTINGS SHALL BE NATIVE TO ALBEMARLE COUNTY, VA. THE FOLLOWING ARE NATIVE TO ALBEMARLE COUNTY AND ARE PROPOSED WITH THIS PLAN, BUT MAY BE SUBSTITUTED WITH ANOTHER NATIVE PLANT: LIQUIDAMBAR STYRACIFLUA "ROTUNDILOBA" OR "ROTUNDILOBA SWEETGUM (CANOPY TREE) ILEX X AQUIPERNYI "DRAGON LADY" OR "DRAGON LADY" HOLLY (LARGE EVERGREEN) ACER PALMATUM OR JAPANESE MAPLE (UNDERSTORY TREE) / AO \ �' / ," x'�.: - �, 4�- �,p-� j / / U \ MYRICA CERIFERA & CVS OR SOUTHERN WAX MYRTLE (UNDERSTORY EVERGREEN) _ BUXUS SEMPERVIRENS & CVS OR AMERICAN BOXWOOD (LARGE SHRUB) / /// _ x 3. ALL MITIGATION AREAS SHALL BE PROTECTED BY A MAINTENANCE AGREEMENT. 4. DCR s RIPARIAN BUFFERS MODIFICATION & MITIGATION GUIDANCE MANUAL DEFINES A CANOPY TREE AS A TREE THAT / / \ / ` / / Y � Oy REACHES 35' IN HEIGHT OR LARGER WHEN MATURE. THE MANUAL DEFINES AN UNDERSTORY TREE AS A TREE THAT MATURES TO A HEIGHT OF 12' TO 35'. A LARGE SHRUB IS DEFINED AS A SHRUB THAT REACHES 10, OF HEIGHT OR GREATER AT MATURITY, AND A SMALL SHRUB IS DEFINED AS A WOODY PLANT THAT CAN REACH UP TO 10' OF HEIGHT AT MATURITY. A I O / / •=- / ��>s i �ji /� I �l I . //� O STREAM BUFFER MITIGATION NOTES: THE EXISTING STREAM BUFFER ON -SITE IS HEAVILY WOODED, SO TRADITIONAL MITIGATION PLANTING CAN NOT BE ACCOMPLISHED. THIS PLAN PROPOSES THE FOLLOWING MEASURES TO MITIGATE IMPACTS TO THE EXISTING STREAM BUFFER: \ \ / / / 1. THE STREAM BUFFER SHALL BE RESTORED IN AREAS ALONG POWELLS CREEK WHERE TREE COVER IS MORE SPARSE OR WHERE INVASIVE SPECIES HAVE OVERTAKEN AREAS. THE TOTAL MAXIMUM MITIGATION PLANTING AREA FOR THIS DEVELOPMENT IS 47,658sf (EQUAL TO 2x THE PROPOSED IMPACTS). MITIGATION PLANTINGS SHALL FIRST OCCUR ONSITE IN THE STREAM BUFFER WHERE VEGETATION IS MORE SPARSE. IF A TOTAL PLANTING AREA OF 47,658sf CAN NOT BE LOCATED WITHIN THE SITE's STREAM BUFFER WHERE AREAS ARE LESS VEGETATED, THEN THE CONTRACTOR SHALL HIRE AN ARBORIST TO PROVIDE A REPORT DEPICTING THE PRESENCE, IF ANY, OF INVASIVE SPECIES WITHIN THE SITE's STREAM BUFFER. THE ARBORIST's u v / REPORT SHALL INCLUDE A PLAN FOR THE REMOVAL OF THE INVASIVE SPECIES AND FOR THE AREAS' REPLANTING. THE REPLANTING OF THESE AREAS SHALL BE IN ACCORDANCE WITH THE v ` 400sf MITIGATION PLANTING SCHEME SHOWN ON THIS SHEET. THE TOTAL MITIGATION PLANTINGS & REPLANTINGS AREAS SHALL NOT BE REQUIRED TO EXCEED 47,658sf. \ 2. THE CORRECTIVE MEASURES DESCRIBED ABOVE WILL RESULT IN PLANTINGS THROUGHOUT Mp SCOTT/R. CULLINS'Z No. 35791 111 p 9/22/22 0 `s G s sNAL N I E 0 1 _ / z Z Z O J w Q O O M mN N n u w �n J O H w a J) Z �. O w W w w THE ONSITE POWELLS CREEK STREAM BUFFER AND WILL MITIGATE THE IMPACTS FROM THE \ \ xx s^s + u .fie66 PROPOSED CONSTRUCTION. 3. A BOND SHALL BE PROVIDED PRIOR TO CONSTRUCTION ACCOUNTING FOR THE COST OF \ REMOVING THE MAXIMUM 47,658sf OF INVASIVE SPECIES AND FOR PROVIDING NEW / — / ' / MITIGATION PLANTINGS OF THE MAXIMUM 47,658sf. IN THE EVENT THE ARBORIST's REPORT \ _ I IDENTIFIES LESS THAN 47,658sf OF AREA AVAILABLE FOR MITIGATION PLANTINGS / I �' / / / // / / _ _ \ /.- y �.� r l� 1 \ \\ 1 O o REPLANTINGS, THEN THE AREA OF INVASIVE SPECIES REMOVAL AND MITIGATION O REPLANTINGS SHALL BE EQUAL TO THAT OF THE LESSER AREA DETERMINED BY THE ARBORIST \a\II DUE TO THE STATE OF THE EXISTING HEAVILY FORESTED STREAM BUFFER. 4. THE ONSITE STREAM BUFFER'S MITIGATION SHALL BE COMPLETED PRIOR TO THE FULL RELEASE OF THE MITIGATION BOND. - \ 1 r � w I CO �O V O v 3r V / /V M r R i ( 6 L9 PROPOSED TRIPLE BOX T (NOT PART OF TH�'PLAN) AT ti o POWELL(CREEK CROSSING WITH THE C7 o PROPOSED RAMBLING BROOK LN ' (vj 3 — / Ci7 04 a 9,281sf TO THE WPO •... PROPOSED IMPACTS \ � V' ®�.®�� o ®... o ®® / � � n O v v v vO - _ / ui �TMP 56A1 �QYd� co BUFFER RESULTING ., O P,5bi15 /'/> o v / / O \ � .- ,.. �`', / ,. .•' FROM THE PROPOSED _S II & III _ `\ �' � /,--`_� �, 6 �00' WPO '' CD D VEPHASLOPMENT - %!ter �` v BUF�ER, TYP! / / G) O _ V /^O O / A I k.,a - — •�_� CREEKk] — V �� �® , .•���,�/� O� 4 •�,i — — — y PROPOSED IMPACTS (44,175sf) TO THEo \ J \ —� // / �l I —� W o fi y" / '• A •• � i � —'��� � `r rg�• --' / J / I� • - / /i i — — • — �'� = WPO BUFFER (PART OF CONNECTOR v / / /j ,/ / CAI ROAD VSMP PLAN - WP0201900027). / / / / •� _ — — MITIGATION FOR THIS AREA's IMPACTS �— m �\ — —� v / / TM `- / �_ - _ _ ARE COVERED UNDER WP0201900027 • �� �,r �m�� r�� O O/I / I '� W o 00 -- -- PROPOSED IMPACTS - \//� � � ��\\\ \\\\\ —\\ \ �, \ 2 / 1 O THE W/ / v �� ��\� O v� // /G // / Z O®BUFFER RESUOLTING FROM �A ��� �TMP SSCc®3-A1-� 10�/ / / H� / __� — v vv ��® -®� _®//i, /,o / O THE PROPOSED PHASES II & ,/� \ � � /�/} — I I Q ~� O o " ` n III DEVELOPMENTLua / C /�4i INNER 50' OF \ j THE 100'WPO O - / COU D PR S ED / I YY✓✓ / i / / � / \ / , '/' / / � ���' O ®// / / � / / 1 Y � � o BUFFER, TYR, / / / STEEPS P S TO R M N ( / O 1 / // L I--1 55C 03 A-,/� _ - EXISTING CO CR EbAM PROP SED TO BE ul REMOVED U E WP020190b0 HIS 9Ai!S REMOVAL PFT OF f�iE,t�ONTO WPO STREAM BUFFER MITIGAT ON PLAN & W1Lt HEL ESTORE-TH ,.r,. NATIVE STREAM FLOWPATTERNS. THIS \ / / / I // / / — L V / � ui z HELP/RESTORE THE PARIA "HAB T'AT THA \/ / � / �I f / / / / / �/ / � f BEEN ALTER D D TH M—� 1 � � / � F � .•. �., � _ ' ' �' / / �// / � � A / � v � L CONSTRUCTION AIVD A ATI FC TO TRAVEL UP D STREW T RESTORINE HE=_ _ CURRENTLY I E B TyE �/ // ( // r j / — �' Lr_ o COLIN NED PR R D STEEP LOPES (TYP.� — // — •� ' i _ PROPOS OIMPACTS 80sf) �/ R •` ' \ '•®' , i TO THE WPQ BUFF RE FROM THE PROP EDP II \ / CD Q x 00 / / � 'f'"�_ i �.%"�" ����`x ij �FE �/ /`"' "/T � , ///.•/' >i/��/-'/ i a \ \ OPM 4;o EXI IN 12' WID x 8"HI l / j' / i. j _ \��=..-/^` "` 1 • ' p BOUNTY )NE PRIES ED \ \ DOUBLE BOX CUL / �/ /' ,'/ -=` �. j , - LI S OF POW LS STYE OPE 0 I �T�P. / U u POWELL\\CREEK CROSSING j / ✓ (1 < \ V � rk / -- — . CREEK, _j o WITH EXISTl\NG CLING LANE �f / / •� _ / j Is A A OFILVE o / v A �(/ ) �' /; v v • • ��•' PROPOSED IMPACT (2 0 T 0 CN C�EE v 4 1• l , TMP SSC d3 B� •• TMp 56-115 BUFFER`RESU I R M TH POSED SIZNc �i O ul o > / %, HY;S II & JOB NO. E OP E EXZ O o PROP LIMITS, _ \ /\ \ 182154 4 ,.% i / : • ® _® \ \ ' / O / i ' \ \ SCALE 1" = 100' o /// C / _/��� /A ���� 11 \ �•/� \ Q SHEET NO. / A / / 1 11: J• \ i ' 21 PLEASANT GREEN PHASES II -& III PROPERTY LINE, TYP. SCOTT/R. CSLLINSZ No. 35791 P OPO D SWM AC ZNTEN� CfE SE CJJ IX _ MAINTENANCE EASEMENT, TYP. - - - - w _ --7,4 -- --77D- _ w w w — O — — --- 1 -- 66B -_ SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX w \ I I MCCOMBSTREET y M - ATARATEOF ��w ' b .� WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS OTHERWISE TYP. _ w I �� Z PUBLIC ROAD (56' R/W) --- - - _ M R B PER i,000 SF, UNLESS SPECIFIED ( , \ \ \ \ \ , - - - - - -� w w --- SC TT R. L NSA _----M- D.B. , PG. - --- —a PROPOSED 8"HDPE ROOF/ _M - / / / ) \ \ _ _ 6o LBS PER ACRE OR i L E D O - - - -5 - - +O �- — ;-Yes____—m a-- ----/ \ \ --` —W-- y 66 4 So �7/ +oo 3C Q / S // k--------- I --- --- w/--- - �1— C _ — — — — — — \ — — 0 9/20/22 z 5 25+0o _FOUNDATION DRAIN SYSTEM zz+5o �%g ��- �S G1 z 23 EX- z z4+oo z3 — — — — — — — — --- --- -- _ - - Zz+pO p �T - - - • \ �" 7�� / ^ \ 'SIGNAL E� io' PR - - - 5 y a // ------ ---- z _ - IVATE --- --�� .�.z17Cs 'LI' \ � I 1"' -----_---------------' DRAINAGE EASEMENT -- - ----- >- 7' 7_' --- 1 I:,• 74 pGRFFp 7 \\ —--------- — D.B. PG. �r2 ! - 1 { RF-26A - - - - - - - -_� !-- TIE -INTO EX NG STORM STRUCTURE / ri -- - - - -- 0 o 749.25 PROPOSED 8" HDPE ROOF/ �3�_--_--- J C) FOUNDATION DRAIN SYSTEM / ° G1 „y imD�G1- --^�----�-D mD mA m� I I RF-zA e ra-'� I / / N u m / v A n v w w N I m A u A m v u / 5 ^a \ / \ �/ F- 0 ^ w w o N b I v n N o o O I/ ^v y. \ �M 78B \\\\ // / / w vI c fl/W w of o N N N w / a; 3( ) F o w w w u' / / '� REPLACE EXISTING DI- B L=10' z a� / w V o ° LOB "� °\° \ WITH NEW DI-38 (L=4') / '. / / O .. LOT LOT I oc a LOT ° LOT LOT LOT / LOT / ` / u 3 LOT �— o x c�' — LOT LOT LOT 76 .00 �" / / ¢ o T LOT 1 1833 1$4 3 a zo 20 210 211 I ziz �' /� EX-3o \ / Ln 0 180 181 I ix °I 5 zo6 7 208 9 ���,• �.. / — u PROPOSED 8" HDPE ROOF/ o iy 1I ¢ n / FOUNDATION DRAIN SYSTEM I �+ T O I. d 21 Q ivy / 8 d / \ j / / Z/ / �! o J F II m io' PRIVATE DRAINAGE EASEMENT F \ / m - -- - - - - - - - 20' PUBLIC DRAINAGE EASEMENT OT RF z5 7 \ \ \ \ L� / / / p PHASE III-_PROPOSED12" HDPE - ��+/ �� / 5 ' \ \ d / / // 2 > z o io' PRIVATE \ 748 - - - D.B. 5264, PG. 297 / / \ , \ io' PRIVATE DRAINAGE EASEMENT \ / \ / O m O 752 YARD DRAIN SYSTEM 5 ��/ LOT / \ / 9F - S D.B. PG. / \ / H U z O 3 / RAINAGE EASEMENT 74y pqq 7° 706 - / 21 / / \ °I° RF_z4A l / / w m > w a o D.B. PG. YD-u - - - - - TIE -INTO EXISTING STORM SEWER WITH \ 1 / u - 742 - - - yh' p0 ! \ PROPOSED 8' HDPE ROOF/ / O I- w ¢ o - - PROPOSED DOGHOUSE MANHOLE / �,1 \ r s / YD-gE - _ - _ 4°'S° - - - 7 0 \ ��/ /�Q �6 FOUNDATION DRAIN SYSTEM /D \ I \ / % / n z w N /---RFsgA 3� I J 1 // .. m o - - YD-8C 46.00 LOT FE =747 ° E oa/ I ry I vD-sE — — 7i 8 v / / / LS�� 1 V � �V / / s ::' ��� W ca / �I I 747-6I1 � � � 0 PROPOSED iz" HDPE 216 '�1 / �. / 1o' PRIVATE 18 ROPOSED DRAINAGE SYSTEM / Q %{° d c -DRAINAGE EASEMENT 5 LOT LOT LOT I \ v 737�b SYARD DRAIN SYSTEM LOT ti ' \ / j / / 0 D.B. PG. I LOT vv v�� A�\ / / / �ti w > LOT-G Sub I - - �3� 2 LOT ^ A �� 21 �.,1�� �%r �` ° PROJECT BOUNDARY (TYP.) - - // / / i / Ln - /' FE=746 33 c� 33 232 LOT io' PRIVATE> A �G° - / // i/ > / 186 3 741+ m m D m T 231 2 O DRAINAGE EASEMENTS \ LOT o 3 D.B. PG. 736 5� v A m D / A / 218 p.� A �� v l 1 � �� / /� / / ; `• / \ L�x 1 °. .. V i' c 6.6, A PHASE 111 -,1 p. V v / V ' / / 0 - •.+ ' �� �� I i' v -- �o �' o / �// I-�T V / V � A �19 �01�` \ � V ' � , .-TIE-INTO EXISTING STORM STRUCTURE/�/ / \ / G R-743.0o u 6 \/ \ - / / \ L 2 LOT s .. 74x33 FE=743 71 3 \ - - ia. - Y� /737 9 j \ \ / A A V LOT 15b 0� EX 28�`' I 188 PROPOSED 8" HDPE ROOF/ - I— I' FOUNDATION DRAIN SYSTEM 28�3\lo' PRIVATE - - - - - / I / / FE 74zdo3 7 y 1 PROPOSED 8" HDPE PER \fit �� 15�P 1 LOT \ �� \ \ \ L�T ,,131�0° RAINAGE EASEMENT - - ? / 11 w nNi N N w-FOUNDATION DRAIN RF zi --- - SYSTEM22 YD-8A \ 221 .1 � - - - - � � �+� }� (• ¢ N N N E LOT 743 26 1o+oaa � � I� / 189 740 _mow ri \ • 15ao 7 \ /: V = D.B. PG. - _ - - - - - / / v / LOT E 43.0o YD- COOLF ig.. I °i 1°+5p \ `" •:,., 746 \�. j6° Q��, /1� �0,5 ' L�T / 3 00 \s \ \ LOT RF-z4 e., - - -- - - - - _ - 'X'" \ \ \ \ rn 0 ,.✓� - \� LOT • �— w � � � / FF �• LOT \ � r;" � -- _ _ = s � ti — 13 � / iz' HDPE I - - - - 68 --- 6 / \ \ / ` ' •' X IN SYSTEM 7�39.57 G R- oo 1 EX-z6 I \ \°�° \ ,,1'z � 1 TIE -INTO EXISTING STORM STRUCTURE -74 i RF-i8A ,\ .. ,., 1>< Q- ''z' 22 LOT E=74o.G7 69b \ z w (� ��•.1 5 MC TIE-IN TO EXISTING STORM STRUCTURE 6COMB STREET 7 5 5� 5 UBLIC STREET > \ PROPOSED 8" HDPE ROOF/ , • . • 3 PROPOSED 8" HDPE ROOF/ \�\ C3� .,1 22 / ).:;t` . ' ` ^ n\ D G R= - FOUNDATION DRAIN SYSTEM `• ' • `. • `. ` ."' >, _ FOUNDATION DRAIN SYSTEM ., \ � ��' 4j . •�..'.• ', . � - '� 'b N � 'xa'`� • `; � ,< �`- LPG 297,' o I LOT 739 $3 ° - .�.. • . • . _ . ,.. �.; ' Y / 7 ;.-`. Q �^ ;\^� M \. a o -�;: ��.. mot_. .\ ° o i F zzA / j- o / FE=74o.go 7 I I • - •• ` .. •• • • . 734, - . • . • . •.. � � /�° \ 3 LOT / � ii ,,,"� n,"� \ \ `^ � � - RF 22 ✓ �\ i � CC n I j _ o zo PRIVATEDRAINAGEEASEMENT \ 2x e 3 3 3 / /'wt 2( k n a, n o N D.B. PG. • •. • •• • `. • `. `\ 1;� oo \ �,- !�, �41 ,�3 r,,�t ' ter,. cyi G R=738o0 3 I �. LOT N o 3 \ 0 LOT I I G h� io' PRIVATE DRAINAGE EASEMENT \ hM / - '-s N 5P/o PROPO_SED DRAINAGE SYSTEM ��i \ - F� \ / ^ RF-zzC M 33 � ", I;' 0 2 D.B. PG. o �37 LO �, �c I- �•. •-_-`a-` �.�• • `.' •' . • .. ., ' • � i o - �'- yo/ t- �- u� \ \ .; �', W n YD-gB I / 1 67 zo' PRIVATE DRAINAGE EASEMENT \ !� B \ x_ - _ I , - , • • • . • . �• (j0 / �yy PROPOSED 8" HDPE ROOF/ 238 'v W / G s D.B. PG. ➢�% RF-zo ( FOUNDATION DRAIN SYSTEM LO / ^^rv� ^`� a °� I o ` u o • i G R-737133 :a, 36 of O 'f� \ a Q ii F- O x U. n - o o u� \ LOT o LOT ro /"~ / / — LOT 2 t , , FE= 8.b0 4 ;OPr111` ` \` A % 9� �F /zo' PUBLIC DRAINAGE EASEMENT <v in H - K N N ° 47 N Q w 1 73 -1 :. �+ ' 4 • G 9� ate, h \ v / D.B. PG. \ 239 LO / w J N N N ' L T 2 34 O SPA 22B / 3 y _45 — / : 93 I I ` i6D � `��. A. • ` zo' PUBLIC •„` J � /xf � � H I °" • ` • `�`.' `.` G ENT. • `�. o - -- - l � 40 / o oC O � `y` o� d - _ ' G Rz737 33 ♦ p 38 �•_ •4$9 E1 `. • ` �� z3 ' 2 4 7 \ / d - ¢ LL N •DRAINA E EASEM °. \ • LOT v D.B. PG. \ 4 / \ / ro > > �'� 2 L FE=73 0 7P% + ROPOSED DRAINAGE SYSTEM, • . • . • . • . • . ` RF-iB p o _ _ 44 io' PRIVATE \` ' 1 z i 9 1 RF-i8 ., � . � • . , . . �,�. • . , . • . xh % / - 2 2 RAINAGEEASEMENT' �� � 3 Q ` I 3 94 \ \ 7 y zzA y io' PRIVATE / / - - - 4 - .- T / LF1 EX So D.B. PG. a / 73 33 _ YD g , I. ���y , / DRAINAGE EASEMENT � PROPOSED zz" HDPE �21+ - I i �� - � - i y _ {,`• • D.B. PG. \` / YARD DRAIN SYSTEM PROPOSED 8"HDPE ROOF/ `•% z y f ; • '• • ' / FOUNDATION DRAIN SYSTEM_ - ' ' o • td c I . / a i LOT a — EM f � � ;� i6F . i. `. PROPOSED VDOT STD. CD-i' • '. • `. • •. • `. • •. • . • . • _�. •• . •. • .... /�(O/�QO\ �' / . 1 / 5 / J Q io PRIVATE DRAINAGE EASEMENT PROPOSED zo' PUBLICS' I� �( P Q ! \ 58 • �723 _ Q o " 1 i S i o° -" YD 7 �� S \ D.B. PG. ♦ ^.- DRAINAGE EASEMENT ; , I ` /` // j7 i M-z + o� - --- ♦ D.B. PG. �` n�'/ ` �����io'PRIVATE DRAINAGE EASEMENT . ; d AC€.6`. '� c 3 5 0 0 -•' - LV - - - - S / 16B M , o� `»,�. • `. • `. • �.� . `:. `; . •; . ti° � � � QJ �' � +/ � D.B. , PG. � ��� � . ��: : ,- . - i2 . � - � A W �_ M... y (. / O'. / \ / 76A _� �' 'REPLACE EXISTINGDITOP - =� / � o ° M �\ :. :. _ RF-iA / - lyti - // / T - j2° WITH NEW DI-7 TOP OT � _j Q t Q •• - .' " GEEASEMENT---- �_. .,, � •,..\ •. ♦ -- Z*OO�M —M\ ♦ ,. ':::.-... •�.�.• / �/ _ 1 J � -o L 7 D.B. Sz \ , Z o DRAINAGE 720 �- EX Sz LO u - 'o - -�� _ _ t ro : . • - .. LL � � r� `, � .•`` i8 _ • / � �.., �\ L61 _ tOT < / X 68 1 T � _ - - - - _ ` - . • °.: \ - i xh / PROPOSED 8"HDPE ROOF/ y . \ \ REPLACE EXISTING DI T I S / \ ♦♦ FOUNDATION DRAIN SYSTEM YD - �.- ♦ WITH NEW MANHOLE TOPS- I GAR=737. GA = 6. 7 LL - • . • `•� • `- • `- • . • - "� . // a P D VDO D-i✓ Lam• �►�/ /,ym/ / _ — — / LOT � ` I FF=738.o FFE=7 7.3 '. ` -, \•- . `_ - ?. � - . • // { ' .ly \ z.00 ♦ \ zO, � `ROZ BSE T �, / `6r / LOT i - I - Y N 1 _ iO?S \ \\ 5 °., T I p '' nn SMT=72 .1� 76 BSMT=7 o .. ', I )T' = : • ` `- / • ' / 1 M ' / / / / / / 55 _ - pR POSED �z' HDPE YARD DRAIN SYSTEM / TIE -INTO EXISTING STORM STRUCTURE 16 ii LU V o' • • . - - / •� �. � iz8 \ LO w/io' PRIVATE EASEMENT TYP. I o ' PHASE II I, I � W so D.B. PG. is �. — o \ 63 / LOT / RF .; / / / , 54 r,'' \ LOT o LvY - LOT - • NOTE: CONTRACTOR SHALL ENSURE EDGE -DRAIN PIPES ARE ,' � �; y i� <; / / _ �/ _- � 26 / `� ' � I I I i � � \ 7 8 \ INSTALLED AND STABILIZED UNDER A MINIMUM OF 4" OF AGGREGATE °, o-,• / / / / �/ / C 'zo' PRIVATE DRAINAGE EASEMENT ^♦ /I / \ �7 \ Q Q z 6 - T TO PREVENT CRUSHING DURING THE CONSTRUCTION PROCESS. ,♦ - - " LOT / ti / //' ! ° ; / ♦ _ \ - - / - w \ \ • `. r. - o \ YD-iA 1.OT Cxh� D.B. � PG. is \ / / / 53 \ / �fti~bh l - ` / //1 \ ---- ATE PHASE I I LOT _ / - -- - - - - �- - /- ` - , Lot \ - - Lu l7 �`. '. - . • `. ♦ L IQ�^- O V LIMITS OF PMF ♦ / - - - / )R POSED DOT STD. CD-z / / / \ �7 ♦♦ DAM BREACH PROPOSED VDOT STD. CD-i• e 4� o N ^ / / y S� - ` ,- , • \ • -e � / / _ � '�.. ° \ / / � LOT 4 vz / • / / ��\ I_ = l'•'�l.` l —/l / ' --- / A�e4� �V •• v / ti/ 2 �� / / .l - U) W v- LOT / / / / / i —� J / ♦ / — o �---- � — %�``. � � � LOT / � A LOT I� `o "-' AG 4y:� .� a - �� / ° / A v , / �� > LOT /ly �/ 7gx v 51 v tixo /' / / v v / / / L1J 72 // / i s°/ v/PHASEI / / /� `` �` '-'_ • — v A / / / V LOT ✓� V a �� ____ — ` "•�::``.``' �v �� /� / %� // ��4 �'% / / vI1OM �• 9 v -- Q `.NOTE: VDOT WILL ONLY MAINTAIN WITHIN DRAINAGE EASEMENTS TO THE \ \ // x / EXTENT NECESSARY TO PROTECT THE ROADWAY FROM FLOODING OR DAMAGE. / v / / 14sx - 86 29 / / LOT / JmNP O x LL °. �. \ / / \ \ oxh. / \ LOT / i ii J ♦♦ / /CN Q CN r J'uJ VLL�`^•�� iV'`��\ 7zo\\ ^\ // // L Lu �., 221 .a..p� - U • 7 - - +�,� � W ` ` -. •. .�. -• ••'_ .� �� / / i/ // /�/ � / � � I / v LOT — �� / / �// / V �v ♦ s � E / LOT \ \ \/ ♦ u LOT / // \ \ 4 o / \ LOT / 7 22 \ / ri, a _ ,., \ / LOT \ o i ♦`« of ioo'WPOBUFFER(TYP. ' / // / // i a ~ �\ \\ 3z R h C SCA E LOT 23 \ / ♦ a C: // �\\\ 11 JOB NO. ° „ n.rl.n.n. ". .\ ^ � / / // �1 / I / \ .. e OO �° •o � \ 30\ 15 / fit) 24 20 \ \ I 1 I / p NOTE: SPLASH BLOCKS ARE REQUIRED ON THE ROOF^''� — — — — // LOT PROPOSED /' 182154 DOWNSPOUTS FOR LOTS 65-102. SEE DETAIL ON SHEET 15. / \ \\ / / / 68 /VDOTSTD. CD-i 1 \\\ / \ \ F ` LOT SCALE o PROJECTBOUNDARY(TYP.) ♦` 0(/IN FEET ) .':_. ° ♦ 1 -30 0 �s �SLOPES STEEPER THAN 3:3. SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX v �^ \ MATCHLIN \ \� /\ 1 inch = 30 ft. \ j • / n WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF Xf LOT S 0. SHEET N 6o LBS. PER ACRE, OR i LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.)EE SHEET 13 \ \ / xso \ �3 / L -- _ `♦ 11 r SLOPES STEEPER THAN 3:2 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT RATE OF NOTE: VDOT WILL ONLY MAINTAIN WITHIN DRAINAGE EASEMENTS TO THE �T OF 6o LBS. PER ACRE OR i LB PER i o0o SF UNLESS SPECIFIED OTHE4Y�,% / � � �EXTENT NECESSARY TO PROTECT THE ROADWAY FROM FLOODING OR DAMAGE. lo' PRIVATE DRAINAGE EASEMENT D.B. PG.- - / - -- - - - SCOTT R. LINS - / YD- B RO_JECT BOUNDARY (TYP.) - - - / O - _ / C-) No. 35791 / w I.W' w i+ _ _w + 4 w w Tw w w - - �� 9/20/22 vv .-OPEN. ,� `. _ . YD 4A _ - 1 �� w w � w / / // � �SS10NAL / Lf CAM* YD4C• 8 - / -- OF/ _ .--- -- w �w _/ z PROPOSED8"HDPERO / C0 1 ! • r / -s= _ - I I FOUNDATION DRAIN SYSTEM .., - --- - - 754 -��v ., � - w LOT I f •. • •--7z4 + + LOT -- 6 LOT 152 �,.`+. $P i�.�' i 66B --- �� SLOPES J / +• .• 1.• .`,.• r• Ise // _ - _ LOT 1 1 U: �'. ----- i _WITH AN Jo LOT/ 150 5 T �- +. •. •+� 9?ACJ. MCCOMB STREET -- - 0 6° ✓ / / / / \ \\\ \\\ LOT 1L 149 T m y m `. PUBL R D (5 R/W) - - - o m z J u f'` D.B. IC A PG.6 =--- M --- - -- - - - / . -M M M 0 b ,, YD-4E / / LO / \ 5 .67 G� y m tr v, `^ `. •'. •'. • . to. .. e :.r .- _ m� - i ----M -� M - o 6o LBS P m� m z v o m - ^ ,• M- - - --- + - - PROPOSED 8" HDPE ROOF/ I- m n �45 ^ 1 o w w M + o z+ 5 z ° v u u 'o / /" z5+oo FOUNDATION DRAIN z +00 zz+ o y \ 1 v m •, i z5 5 66 4 5° z4+o' 144 v \\ \ .33 W W -1 _- { to PRIVATE z6+00 3 �3+5° zz+ z LOT o m \ o 1a i -- - -- / O 14 r j t -- J ' • RAINAGE EASEMENT lo' PRIVATE- ---' L O 3 LOT 14z m o �m \ _ -- -- - _ D B. PG. i I Q 0 YD-4 RF-gA / 26+5° DRAINAGE EASEMENT' j _ ----- - ' - )° Ln II LOT 141 - ��� o P� ' ,do - f -- M�/ ° 3 D.B., PG. S2-_ - _ _ _ I�� RF-z6A . _ = �/� Q n En x °-S V a� M -A - - 140 oy r�.� o a RFg M, 4 0- --�, --_ - -- - r_ _ - w -- - c 3 J F �, I m � 1 � - -I'I 21 - ::. - _ -_ ___- - _ - -_ [_. � I w : \ �� + -' �-'•' us. w- e '- ..., _ TIE 749�z5E�' PROPOSED 8 HDPE ROOF/ y u `_`, - � '� � i `' - -.. M +o P � �, _ � -_ F>° }-o } o RF i a � � - � � ' � � �� ��. � Z � Q O o8 I m r l ROPOSED VDOT STD. CD-z -: } L 4� } m M, , �� } o\' RF z6 f o > _ 60 - „ .. FOUNDATION DRAIN SYSTEM I , - 28 io' PRIVATE DRAINAGE EASEMENT �o \ - / D m u A O D.B. PG. I o 10 - / 4..,..' N 27 51 ,^ I p I T Gl _ -T _.. T D m D m u v ID m� T D m TLC TLC - TI V D V I w m >� m D r^ u A .I u I / f RF-z A H o z 3 \� v s6 A i; E D m v i i D I56 R) / .. m ° r w N w N u A z m Ln° o f ^ o < V a " � C.L�N Wl lo'PRIVATE + /• �\ r^ u A � I v n �I ', / 3 II A II V II � Vl V Vl O 3 � N Vl V II V II � II V � � F+ llt I �x J 0 Ln �I w o II I W I ~ N of . b w 1 O h w Q o /Mid 28 5 48 �ICROA D.B. EEEASEMENT- w w' N �� V+ v o 0 o w h J o 11 o u Ln wV V wo w o I- IVo in o I ii z � o w iy 3 m ~ w I cn Z / f /PROPOSEDDRAIN�SYSTEM D•B•_�� LOB 0 g M ' � + o P LPG _� I � ° ° �' LOT LOT LOT � r. � o = LOT LOT° LOT LOT LOT LOT LOT `c > W � m EXISTING lz" CMP \ / / 1 ^ CULVERT TO REMAIN 46B RF-io -' LOT' LOT 1$� 184 �' LOT 7� .00 w Q " o R`F 1 RF_i4g f+° LOT LOT /1 180 181 1�2 3 oc u o o I zO5 206 7 208 209 210 I 212 W w 29+° -e a to o F- 0 211 m w o 1 178 / 79 PROPOSED 8"HDPE ROOF/ o W LOT Q a 0 = _ IV INAGE EASEMEN Z FOUNDATION DRAIN SYSTEM II +° V I lo' PR ATE DRA T d w 0 0 I Ia> I I I I Ds.�pG. I / 213 0� 6A 29 0 _ T n ^ A I _ ASE III L - - - - zo' PUBLIC DRAINAGE EASEMENT � w 44 �� - - -- T m mA --- -- -- - - CLING LANE ,, , �`� T �' � �' �, - - _ _ � J \ 5o PUBLIC RIW + I \ u J ° w S X m ;;;PROPOSED HDPE a � 74a D.B.5z64,PG.z97 b' � a� 752 YARD DRAIN SYSTEM 5 \i w o y _ ° �, Q lo' PRIVATE , �/ C � I I o}Oo 6/ r o 4 z A °' LOT LOT > m RF-1 A I YD gF / RAINAGE EASEMEN S 70 70B - 3 4 Q RF 1 A G rtf W Q o 0 5 YD-11 746oi 30+50- Q G C y' n v w° 161 �� I o D.B. PG. _ o' '- - h L / - - - a - -74�- - - - TIE -INTO EXISTING S L T LOT 160 0 I 0 - - - - - - - ° 40.5 - - - = o PROPOSED DO 159 PROPOSED lz" HDPE +^ 115 7493 = - YD-gE - - - - - 7 \ o i n V 1 3- co\ A y °' w LOT LOT 1 \ 158 YARD DRAIN' ry 3- - LOT / 57 I GfLR=7 o - y6.00 °n - RF-5A o a Y \ 155 /�56 PROPOSED 8" HDPE ROOF/ 3� FF = 1.67 LOT , LOT G R-747 ° 6oh ry I YD LOT io' PRIVATE FOUNDATION DRAIN SYSTEM / FE=747.6♦) I I 8 - / Q 1 ROPOSED DRAINAGE SYSTEM EXISTING 12" CMP / I LOT =75 SS0 7% 3 I _2� 54 / I I \ �_ DRAINAGE EASEMENT I 3 20Lf io' PRIVATE 285 I \ / Y 0 1 E= 8 d PROPOSED 8" HDPE ROOF/ - - - D.B. PG. DRAINAGE E P�EMENT LOT LOT \ \ \\ CULVERTTO REMAIN / 39 75 ' o - G I 6 34D 34B AR= I LOT 737 d \ o FOUNDATION DRAIN SYSTEM 75 +n ' 749 7 G S LOT v r- lo' PRIVATE 745 67 4 FkE=75o 33 LO / Ra74�. one - - 235 2 LOT ^ v w N N N E + - 746 33 2 2 LOT � I Lo-T FE= 5 f � �23 33 lo' PRIVATE YD-zE RAINAGE EASEMENT YD-io 34 20 / 3 7y4 m m m m 3 2 1 DRAINAGE EASEMENT -\ Q N N C4 E 3 / 186 3 \ o - I / lo' PRIVATE 1 • t 75i.67 D.B. PG. - � �,' m m m 2 O _ I I ° I� A u A m D 3 D.B. PG. 6� \ vi rn / 3 - LS�736. o / DRAINAGE EASEMENT AR- •' � � / 752- _ _748 o \ -75 I LOT 4 a / D.B. I PG. I I 3 / 1 5 + A Se6 F E= o LOT ^ LOT 745 / 37 z PROPOSED 8" HDPE ROOF v 6 0o GAR- 46.6 PROPOSED 8"HDPE ROOF/ - / 202 - r YD gD 187 �'I ry d a LOT 74YD-zD- 16 RF-i54 ry / v E- o a - °o w o . 1 FE 4 _FOUNDATION DRAIN SYSTEM - + o� ° w _ 4 744 3 --- N •r N •r IPROPC / 1\ b $- > w m / FOUNDATION DRAIDN SYSJ[ OTOEM- R-755 33 ; zA AR- LOT r 3 G, OUNDATION DRAIN SYSTEM GAR-7tg7. o / / -743 ~ \ \ �\ _ -� �4 - m -. �� _ // / LOT \ 0 Z /� 75 .00 LOT 7 4�� FE= . 1�6 / Z AR=746.¢3 o/u F 3 + 7 FF -�47 7 LOT 74�d3 I LOT FE=743. 7 5%I 3 - - + �o 737 22g / E_ G 754 0 - G R- oo � w / YD-3D I �- - - RF 5 0 - d54 - I I LOT FFE= 7 J / 201 / 188 - h©TZ z / 3 - 'FOUNDATION DRAIN SOYOSTEM O 0 -� / I I - = +I - LOT I ENTI - G R- z1 1 �°--- D.B.RFzoA �P�.f�� ° 28 o u, 7473 r75 16 io PRIVATE DRAINAGE EASEM - - _ / ^ RF ziA _ �01 g• w Q� LLIw / / / / / �_- - - o RF 4q 3 4% ER7752.6 175 L G R=74 .3 PG. 3 I F E=746 337 LOT / I + / LOT FE=743.d03 7°h 10 oo PROPOSED 8"HDPE ROOF I C°� \ / IX PROJECT BOUNDARY (TYP. _ IG pR- to / 53 I C1T FE=74600 v, RF-i RF zi - / 3�0 2 ('7 3 o I FOUNDATION DRAIN SYSTEM 0 � / lo' PRIVATE DRAINAGE EASEMENT, / ' 7 / 200 I 18 io --w / o ROPOSED VDOT STD. CD-1 I YD-zC + / 9 0 D.B.pG. I LOT I LOT ° I i64 ,�0 743..00 RF �9 ° o I I - 3. o lo' PRIVATE f n I - - - - YD-gC zo+50 - ° .1'z N Z n RAINAGE EASEMENT °n� R=75z'o 174 AR- 3 7 9 6 3 N \ I �' S�/ Phi d F -75 7 LOT 60/ ' ' " RF-i6A r � �n I 35 - � F E- 2. I I �3 33 -744 L l - - - - Il+ w (� PROPOSEDlz" HDPE D.B. PG. - - I FFE= 6 34 - -- �� 0p \ N i UJ n lo' PRIVATE / 744 - /-PROPOSED lz" HDPE I - - - 68 � M > DRAINAGE EASEMENT YARD DRAIN SYSTEM I YD- C ° RiT 3. 3 6 �� y /\ 75� I \ 3 LOT I ' I LOT I 165 I YARD DRAIN SYSTEM ' D.B. PG. / / YD-3E ( = 5�' u o 15 - io' PRIVATE DR N - LOT I LOT E- 6 6 \ / o0 0 o a - E-7440 G R= o.i i8A 5 74 .00 RF ` .� 134 E=75z 41 n AR=7SO.6 173 ti R-743 33 AINAGE EASEMENT / I/ -74 7 �Z So \ CV a 753.00 7 I 13 E=7S1. 8 , D.B. PG. 399 I 1 190 - %I° O I L(�T FE=744. 0 .73 PROPOSED 8" HDPE ROOF/ 6% -/ - lo' PRIVATE RF-6A II I qR=74z 0 - - PROPOSED 8"HDPE ROOF/ �\ z _ y DRAINAGE EASEMENT . / 166 3r/n FE=7 7 LO I I LOT _ 3 STEM , . , • FOUNDATION DRAIN SYSTEM _ 1 2 + / G R-739.3 II FOUNDATION DRAIN SY S' LO R-751'-L�TPROPOSEDiz" HDPE- V/ �% I F -751.A D.B. PG. A _ 750.0 7 YARD DRAIN SYSTEM G R=%42.6 + T 3 3.98 ° / 1 1 FE .40 qo 70 �• '+�. • ?34. 74 \ \\ \ N o / - PROPOSED 8"HDPE ROOF/ �I n FD-750.6 .00 LOT $°�v / 9 ♦ o W Q J o r E=743 3 I PRIVATE DRAINAGE EASEMENT 756 FOUNDATION DRAIN SYSTEM LO LOT AR=75 3 LOT / 0 3/o R-741 73 I + OT I I PROPOSED 8" HDPE ROOF/ YD-z6 167 -- P - 3 I . D.B. PG. . o _ a . G R= 8 00 3 N z LOT LO I 1 2 5 •'FOUNDATION DRAIN SYSTEM _ _ - LOT � � `. � • ` G � ry / 1 130 3 F E=75i.00 o f G7�R=75o.0 1 _ 737.0o I / _ FE= 38. SP PROPOSED DRAINAGE SYSTEM. �.i LV 9 r o. 17 / G R-74 3 PROPOSED 8"HDPE ROOF/ lit 7. // ��+ �', O �G A Q o Off _ 7 T T r 75D o ' S°� FE=750.G - LOT FE= ��00 FOUNDATION DRAIN SYSTEM 197 YD-gB / / �92 RIVATE DRAINAGE EASEMENT 'T �' ` eO�L _j J ry( ti a R= ° 6 - -•' /y�i� S - Q 12 125 m A� m v I I RF 4 / o 40 13 LOT -n / 268, r1o' PRIVATE DRAINAGE EASEMENT (T�0 FF = 7x;37 i LO G R=737133 - 3 136 D.B. PG._ • \'• �O) 90 �ip > 0- n /12 4 m A u ;+-v w ' w - ° I 131 _ D.B.�PG. LO� T FE=738.bo 4/0 .:q OfPi1j.•'.+ o S 90tc� O - 3 \170 YD-zA / G R=74i133 84� I' ' / 1 6 193 c ��� ��z� w LLJ o / LOT E=74z.bo 36 0 / : T 16D P, A�E.A. `' zo' PUBLIC ,� / i s r , n o rt, ,, I I a o u RF 7 . - YD-3A 5 - _ - -- _ o. + 3 G R- o. 0 9 I DRAINAGE EASEMENT. ° -\ v o \a --- �^ - - - 4 ROPOSED VDOT STD. CD-z - - - - \ i69 r I 30� F E_� o. / ♦ G Rs737 33 0 38 �. f•!.4$9.�� I ' D.B. PG. �, YD- B PROPOSED 8" HDPE ROOF r `J 74 7 L LOB 0 \ 0 oo_� �_ _. m v+ I \ a ., o '.`-- - 1_ - - / - 3 : 5oB :. S', , ,�... - \ / - OT �- I FE=7 0 7�% + ROPOSED DRAINAGE SYSTEM, RF_7A M_ -�� - 406 FOUNDATION DRAIN SYSTEM / 3 0 z O - R r 3 4 y 35 LIN / YD gA 19LF ' RF i8 � '-'�•: '' a R OK LA E RF �5 6. I Q z - ^'I ! - - __- _ � I - � - •: ' .. 73 33 YD-g I 37 .I. " �-• 1 N ___ -� i 10 PRIVATE PROPOSED 12 HDPE r ,e _N, ♦ _ UBLIC ROAD 49 R � >. � - - - - - - - - ' '• •' • • •• �•' 2 � � a ( /W) 3zB \ r - - - - 1, - •+ 7 1 Q o • _ DRAINAGE EASEMENT ,YARD DRAIN SYSTEM +_ L PG. _ - • ` Q / I PROPOSED 8 HDPE ROOF -- - - --- • ' I I r .�'r L'L - -a - z D.B. P _ � � - r G � M - - � z7+oo I z6+ o w o �- r^ M ---_- _ -FOUNDATION DRAIN SYSTEM ^ - - - - - � � • i6F' � z7+50- In - / 8 5 ^ 3 - M _£ F \' i+ PROPOSED VDOT STD. CD-i ` j: / 26+00 "r _ io' PRIVATE DRAINAGE EASEMENT PROPOSED z0' PUBLIC. ' V a - 4\z8+oo 49 z I 06 36B -25+0o M D.B. PG. e i - - _ -'.-DRAINAGE EASEMENT z - M.. n _ ,� �M : '•` D.B. PG. .•i. M � z3+5o �-- eM ` • '� � > FACILITY &MAINTENANCE 1 ^ i iz + o i - 16B o�M * E z9 = - -- -�-5 _ > - 1 PROPOSED 6' WIDE • '. r ` • ' TEASEMENT- D.B. PG. -_ 4 5 z4+oo ` 136 \\ o- \ + j w Z -29+5° •• �- PROPOSED DRAINAGE SYSTEMI' / - - / > --- _ r - - - i. - -- R' � M - � DRAINAGE BENCH I `f�r -_ � - -- -m z~ - - �M . • '. `' ' 00 ul :' .. ' • ' �, o ', I - - - - 750.5o r r . • 'I I -�45 I - I - DRAINAGE SYSTEM - - S - - -- S w. - � W V 1 / I GAR 752. GAS .00 I I _ FFE-746 3 AR-743. - f rv.; f o \ z3+So \ i8 v _� - I y _ I \ ULJ z FFE\744 AR=741 3 I I / n T m{- - -} N - - BSMT=74BSMT=73 So FFE= z- I y \M i9 v / �i�T' as 73� r 74o BSMt=73 67 - �a J38 7 GAR�J3L L GAR=737_ _�, ?z. zo zoA / U� w - � I E=758f� 9T=746 So I LOT - /L/ / 8 LOT - I FE=7393 FF = F 738.o FFE7 37.3 ^. , • •'+ 14 \ °° e o o 3- r 7 5 33 - R=74o. 0 73a BSMT-72 d I 173a23 / 76 Mr' LOT � - . 7- - 5 7 61 MT=72 o SMT=72 .lr BSMT=7 0 . • .( )V . ' � • +a - '. f '- ��/,r 1 ,w/ o 593 756 SMT748. 7 LC) 7 6 - $ 7 4 / BSMT= 0 8 I / i, 'a lr ox� izB L.L > , le _ 5° / / T - f SWM FACILITY &MAINTENANCE r 83. 7 4 LOT 73 3 / / \ d • ' i \ / LLI LC)T 86 1 \EASEMENT - D.B. PG. - I YD 5 YD-5A I LOT /L I PROPOSED WALL /I'I / OT /LOT LbT LOT NOTE: CONTRACTOR SHALL ENSURE EDGE -DRAIN PIPES ARE > ° LO7 I / / n I - - 79- 7 ° / / \ 7 8 \ INSTALLED AND STABILIZED UNDER A MINIMUM OF 4" OF AGGREGATE ° o- n 86') / ROPOSED lz" YARD DRAIN SYSTEMI ) I 77 / 6 \ = ♦ > WALL MAINTENANCE EASEMENT Y / - / - J - �I j - T TO PREVENT CRUSHING DURING THE CONSTRUCTION PROCESS. o ♦ N NOTE: CONTRACTOR SHALL ENSURE EDGE -DRAIN PIPES ARE \'• ` lz . O z 734 L`WALL MAINTENANCE EASEMENT �I I INSTALLED AND STABILIZED UNDER A MINIMUM OF 4" OF AGGREGATE PHASE II �y �a LOT Rq x D.B. PG. TO PREVENT CRUSHING DURING THE CONSTRUCTION PROCESS. I r, a `, a \�- �// 74 / 7 0 / _ POSED T / - -- - /_ - = 1 •� LOT �/vPRO VDO A� i r / 734 f •{2b / �' _ 7z8 - - _ / 12� 73Lu / peB!/cR GBR zz o 0 J/\ i� 4 • • • • a••r`r•`+/• r. `a` 1 +•`r `r•++• r 'r •' ____ \V \ • � O I7 7 r - ♦ r E r (MAX. HT. = 4') - ��.�� ,�_�%� -� �� / / 720 r - ` • \ % / LOT 30� G Q/ / PROPOSED WALL : - = �L `�i. �� y-...✓t '.f. '�/ (MAX. HT.-6') �i� I \� I ��� --•.�� "• -"` C� _v. y/ : -°o rnN ��..�A SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX t �� �� - - - �� � /� /'. ♦ s �- / ��� A / ��•r,a k PROPOSED WALL ' i \e :HT. = 6' PROPOSED UNDERGROUND STORMWATER MANAGEMENT d WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS ATA RATE OF __-- _ - _ = �`, •+" / �2 = o / (MAX.( ) FACILITY'C' - SEE VSMP PLAN FOR DETAILS �6o LBS. PER ACRE, OR i LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.) - - t"`- �\ - \ / �% / / ;� a yr o .. y. (WP0202000053)` �/ loo' WPO BUFFER (TYP.) �, a :� S LOT / Joe NO. ° .\ \ _ GRAPHIC \ / % i Xi " �// 1 T r . . a - .,.u.,F.,,.,�;,.. r - .,.�• ; I_ o / I �= \ - L".`a 7 182154 \ SWM FACILITY& ao - Z ~ " SEE V MP PLAN WP z z MAINTENANCE EASEMENT w_ - 4"� - / zo / / SCALE o / O I . _ / S S ( O o 000053) '�".a♦ \ - 7 / ✓ . - LIMITS OF SUNNY FOR SWM OUTFALL DESIGN OO �( /� ` •♦"`any.,_. \ `D.B. . PG. ,.. l=.J - 1u _ OI m 1 % // A., / s -.-.'- n LOT o .� . �' DAY DAM BREACH ♦ 1oo-YEAR FLOODPLAIN TYP. r F / / / 3 - / .9 �: v \ '.< ter-, «� ...� : ,�._ :�r<....� rrn+° ..., . I� .I 1 Q w NOTE: SPLASH BLOCKS ARE REQUIRED ON THE ROOF / o /. - /:- •_.'j pru� !:.O �� •', T'' iFi' D v s.>s ,Oo a, �.'. -i'':r i..,, i��"Q .- C fir,♦ I � - W 7 SHEET NO. ?. ', r. - 1 I. / . @- i.x�I.,Ar �•'" _ �. Y i a l = -30 n v DOWNSPOUTS FOR LOTS 6 -102. SEE DETAIL ON! HEET i . / � - � � -- -- _ o _ - - - - r - oPE MIx \\ \ \ \ e L C \ J \ M TCHLIN— RATE OF \ \ � 00 LOT \ \/ S \ EE SHEET 11 \ / o ►w' ©� ♦o log/ 6�, \ \ / \ \/ \ PROPOSED DRAINAGE EASEMENTS _ — — — — 1 \ SCOTTiR. C$LLINS'Z \ \\ D.B.PG. — _ 1 \ ii- «, \\ — — No. 35791 / c \ \ % y/ \ LOT \ / / \',\ \ ' +W \ / w 8 c — ��0 9/20/22�i INGLANE _ — — — — � — — �\\ �n I / ' /// c / A \ LU '-\ �6 lib \\ \ \ /\\ �• \.� \-- _' / �O J F O — w U I LU I / LLJ to / O PROPOSED SWM FACILITY & \ S / — — — — — / / / / i MAINTENANCE EASEMENT i / `" \ . ° O \ / PROPOSED iz" YARD DRAIN SYSTEM _ V% \ ~ VAR. WIDTH SWM FACILITY Vol\ `. A��" / LIMITS OF PMF / / U f \ DAM BREACH j _ _ _ EXISTING SANITARY SEWER MANHOLE (MH-EX-iz) / —/ U) m f O J O \ +g. \ +�. '• • \ / — 1 — RIM TO BE RAISED FROM 759.75 TO 76o.z5 io' PRIVATE DRAINAGE EASEMENT / oo / t MAINTENANCE EASEMENT \ • \ - 757� ~ w Vl \ O \ D.B. PG. \. _ \` "•\' " / — / D.B. PG. o i \ \ p / / — EX. INV. IN-747 73, EX. INV. OUT-747 65 z F- c io' PRIVATE DRAINAGE EASEMENT \ \ \ \@ \ PROPOSE NDERGROUND STORMWA R MANAGEMENTp O O /� ° ` \ ` \'.\�' X / / - - �. ` 1 D.B. PG. / ' 758 67 S /� / / > \ \ \ i SLOPES STEEPER THAN 1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX o p 1 / (/ w FACILITY'D' -SEE VSMP PLAN FOR DETAILS (WPOzoz000053) / ' \ / 3� \ S W � \ \ \ O v� Q \ ', ` / \ 1 ` \ / j / WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF PROPOSED iz" YARD DRAIN SYSTEM / / ° / / ��� — w/ \\ \ \ `/• \" • `• 6o LBS. PER ACRE, OR i LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.) _� ��io' PRIVATE DRAINAGE EASEMENT ce Q \ \ \ \ \ VAR. WIDTH SWM FACILITY \ O ° y \` / / / ✓ PROJECT BOUNDARY RY (TYP.) ' ' LOT \ 1 — — 758.00i \ �/ D.B. PG. L `p �& MAINTENANCE EASEMENT °. O ' T — � —. I o . v ,' �� /LOT /LO �z /123 \ 1 � �` >iy `. _ � io' PRIVATE DRAINAGE EASEMENT v D.B. PG. ° LOT \ \O \ I ° \ / \ ®��aj � O / ,!• "S`, • � - / � D.B. PG. I _� j\YD-6D I -- m 120 12 ♦ -n / -n G� r �O o \ \ \ o 0 o if j o LUU/ g c� v. m � /"`` ." f ` 1 \ / EXISTING SANITARY SEWER MANHOLE (MI-EX-EX757. �6A I m / m \\ SEE VSMP PLAN (WP0202000053)/ / / i11 1 1 / / RIM TO BE LOWERED FROM 761.92 TO758.0it / / O FOR SWM OUTFALL DESIGN / 1 / / EX. INV. IN=745.99, EX. INV. OUT=745.8z )6z / LOT _� / — &D ° wl 4 � \, . •.I' ` 756.67 � L 117 / y I got" v PROPOSED iz YARD DRAIN SYSTE — — — 1 00 \ a - 6 LOT 11 T , ° ° � 4 T � ", ", �o ° A m � fn RF-8 w - � ft• ..- YD-6B \ 11 / zo' PUBLIC DRAINAGE EASEMENT 76A, r \ \ LQT 112 a " m A o �' ° -. RF-iiA D.B. �\PG. LOTvo PROPOSED 8" HDPE ROOFJ / / / \ / / / / / / / / • YD-6A L� 1� \ a u • a F ° FOUNDATION DRAIN_SYSTEM LOB / / / / / h \ • 1O9 0 \ m o _ o e / / / / / '.•• _ LOT 1� m � \ \ m .of $ v ..� � _- / LOT io' PRIVATE DRAINAGE EASEMENT m � NOTE: SPLASH BLOCKS ARE REQUIRED ON THE ROOF a 107 �i o / s ..! ��a\5 . _LOT lob „ m w , D.B. PG. DOWNSPOUTS FOR LOTS65-102. SEE DETAIL ON SHEETiS. / `,-'�1� S' LOT��� / / / / / \ / / / / ' _ • .! '. ' '. r/`— 1O4 1o5 m A _ m A �� ��o . RF-iz \ RF 8 r /AD:49 RIw 30+50 L _ PROPOSED 8' HDPE ROOF/ RO // / / // // / i' _. .` .• - - � 1��— cps,. %- Ow ' �` � .� OUN AIN M31+5o D 5 0,� 6oD 1 / RATION D STE SWM FACILITY & MAINTENANCE :. j .. �, - -- 54 - - - o w ©u ° ✓ w - ro BP` OK / - 1 '$ fi ' i' • 'l, . , � / � — ,. � -0 "� ° - �, a _': �,� - - � 64B \ / EASEMENT - D.B. , PG. �� , • i S `.. • r >; / .1 2.6 . `> ��- PROPOSED 8` HDHD OOFj - - - , ' -3z+oo - , - \ 75 33 I BSM�74 51 G R=758.go 5/` \M 67TB �m- TI TE • \ � ` FOUNDA ON DRAIN SYS M FF =/8. 754 _ - o 27 - / LOT I " \ io' PRIVATE DRAINAGE EASEMENT 32 5 75, ssTC 6oBD.B. P� j 756 - 7 g \ BSMT594 83 / �B . 107- / / RF izA ro 3+p0 \ LOT / $9 e• / / \ / / .. •' : - , • ' / PROPOSED DRAZ\GE SYSTEM 5.i / 3M \ GAg�5 SM= 50 LOT go / / / / / . • , . •/ �' \\ ' i '9s ���� oA m M5� � \ E=758.8 B- GAR- T1 \\ \ — -- \ R-7s \ j 6 LOT / — — — g�`` 60 • f , FF=758.60 \ — — 34+0 i a \ \ / - 0 — — —LOT 00 - - z PUBLIC DRAINAGE EASEMENT �— ' \ 4 +'' - - - �-4`es \ .•` .• '.�;•.• •, .,. .•�••' •.' ;, .''.• �' , LOT '� 4 / SWM FACILITY & MAINTENANCE \\\ / / D.B. PG. 34+50 - , -' 757 \ 3 ' - - - \ - � .� .�!'. / • . • . �: . • �` �-'` i EA -D.B. PG. 101 / .. moo \ \ 9 -' ` -EASEMENT D \ 7�61 � LOT GAR5�9 � -LOT ry \ \ / \ O OSED ST RMWATER / 7� e,AI�j53 7 - :• 1 MANAGEMENT FACILITY'B' - \ \� ' \ G R=757 33 ✓ �' C FE= 6. 0 4 1 — — \ LOT- \ \ �� / : �• /SEE VSMP PLAN FOR DETAILS �� \ : FF-758.00 '\ I SM- ` • l / ,� / I r ' LOT �. tn' T• I z BSMT=7 .63 \ - - r - : ' / /100 \ J (WP0202000053) i / 0 / G ` / / y d - - LOT \ \ Y 744 ,.�, A A �A ' ..V•, � . _ % � %.�' • 754-. 1 BS T=74 I A � - _ r \. �.\ ♦\ y 744 74 4- - : �.3:�]8{[ : • i. ' 7 \ � LOT 1 WALL MAINTENANCE EASEMENT I 1 D.B. PG. -� � ,a„-r,-„.r, � �''t � — ' /'. • `/•. • I s'>' \ \. \ \ �.—.i i %.. / •. ...•. .., -1c -✓ I - / pig \.• •i.,d n. �• •/' /. ' 1 OD \ \ — - — - , ; , . , . •':,< , ..'..� Imo. — — — 1' '-,� W„girg4� ,., / \ — •� ••�' ,., \ .. \ i .. , � � ..... , • . �. — �� PROPOSED WALL '�. , '�.. • WPo BUFFER. — , \ \ • ` '. -= 742 (MAX. 6') ,-- // / :: SLOPES STEEPER THAN 3:1 SHALL BE PLANTED - % '' - '•�. — — , �. \ \. - •„ drrn�sy rrlq.\ / SWM FACILITY&- \ - - - - \ \ WITH NATIVE STEEP SLOPE MIX WITH ANNUAL.,. \ iof r f " 1' / \ , . `/, • - AINTENAPG. EASEMENT RYEGRASS BY ERNST CONSERVATION SEEDS AT ! � x --= �' • / � O O �' O . 4 :�-- � � O ( O' %A RATE OF 6o LBS. PER ACRE OR i LB PER i o0o SF i \ �. D.B. PG. l Q ' d �O i , ° . \ \ \ - _ b J / i SPECIFIED OTHERWISE TYP. ns /, r a \ a..,►% .,, O SWM FACILITY & MAINTENANCES / / UNLESS SP \ �� \ / \ O� \'EASEMENT-D.B.PG. \ g ! / SWM FACILITY&MAINTENANCE — / .. C, � / \ \ \��\ .\ \ ^�' • `••`• e•• �.. / /�[�C6 /,�,I`A-rr.u♦u-u a u.n.n.n. E -D.B.P \"./ / �. ° ti' .i..nYn \ EASEM NT D G. / \.. her-, i.,,►n.p., .n.n.,�„ir1.p' / O SPACE H ° �� ° 0 SEE VSMP PLAN (WPOz L DESI N\ 0 O O OPEN SPA r + ° r, '�Ck`FOR SWM�UTFALL DESIGNS ,.n „u u�r .,, -,ice„-„� .. .. // ,po' •.\. CLASS ° O--°`"-o--° / /.o o: ,.. �, --- �. °' ao o° (WPO BUFFER ° PROPOSED VDOT STD. ES-i & CLASS Ai-RIPRAP LINED' ` % �' �"'^� O O` ��� O q O � O O. � // O O \ LIMITS OF SUNNY ° �.Ir° ° O / O ` O °O O 2 ° O / tit \\ \ OUTLET OUTLET PROTECTION w/ FILTER FABRIC �/i O O ° ��,,.o ° O O / S. 73 A O O UNDERLAYMENT (L=zo' Wi=6' Wz=iz' D=z. DAY DAM BREACH .r _ / / O G v "1c' �. \ \ ,•41 _ -1 Q -. — ��— — — - o d s �4a- - s o °° ,� \ ' \ \ \ /r,-� n� nr,....... i'yrvn.,r�u.,,.n�r,. -rr-rr-rr .� 4� \ ' \ \p\ 1 \ \ r ♦ �2.- �19 /EXISTING STREAM -- \� / f / / \I Oo�.00*0'' -- u v \ \O `/ — — r ROJECT BOUNDARY (TYP.)/ \ \ _ / O \ ( \ \ 1 ,� \ \ f l ioo YEAR FLOODPLAIN—, ( c I / OV / \ o / _ O O O O Drainage Easement Chart Pipe No. Size inches Max Depth feet Easement Width Required feet Easement Width Provided feet 53 24 7.1 18.2 24 55 24 8.6 21.2 24 57 24 9.6 23.2 24 IT �_\ - o 0, 0 o'O �" / --- GRAPHIC SCALE v — _-- O _ r• 15 30 80 12� \O IN FEET ) i / ��2 O °°\� ��-- I inch = 30 it. / —Cam— \ �\ ° \ o° o---- i _ o°°---------- �\� \L_= = --- o o �a o— o—o- o 0 0 0 0 08 ° ° o ° ------ ° N N N Q IN IN IN M rq O IN m �A W N rn N N Zui J J i / U) 0 LU O ZJ W LU I n D C. Z LU LU U) JLU ~ JQ 0 O ON u z LU G M LU Q Q 11211.- M Q Q J O a- ce LU Q z z Q L . 1 W N 0 '..0 Z V / Q Q Q 2 � i i V i z W LU z V LU u w w a JOB NO. 182154 LE ill = 30 SHEET NO. 13