Loading...
HomeMy WebLinkAboutWPO202000053 Plan - VSMP 2021-03-25GENERAL NOTES OWNER: STANLEY MARTIN COMPANIES LLC 11710 PLAZA AMERICA DRIVE, SUITE 1100 RESTON, VIRGINIA 20190 DEVELOPER: STANLEY MARTIN HOMES 404 PEOPLE PLACE, SUITE 303 CHARLOTTESVILLE, VA 22911 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 (434) 293-3719 TAX MAP NO.: PHASE I 056A1-01-00-02900 (1349 AC) 05600-00-00-00700 (387 AC) PHASE Il 055CO-03-00-000AO (16.28 AC) 056A1-01-00-02600 (4.74 AC) PHASE III 056A1-01-00-02500 (1.85 AC) 056A1-01-00-029RO (3.11 AC) TOTAL AREA: 43.34 ACRES TOTAL AREA PHASE I = 17.36 ACRES TOTAL AREA PHASE ll = 21.02 ACRES TOTAL AREA PHASE Ill = 4.96 AC ZONING R-6 RESIDENTIAL, STANDARD LEVEL - CLUSTER DEVELOPMENT PROPOSED USE., SINGLE FAMILY RESIDENTIAL UNITS PRESERVED/MANAGED SLOPES THERE ARE COUNTY DEFINED PRESERVED AND MANAGED STEEP SLOPES WITHIN THE LIMITS OF THE PROPERTY, AS SHOWN ON SHEET 2. OFF -SITE 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 TMP 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 7HAT EXCEEDS 35' IN HEIGHT SHALL BE SEPARATED FROM ANY 07HER 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 INFORMATION AND TOPOGRAPHY WERE PROVIDED BY ROUDABUSH, GALE AND ASSOCIATES IN JANUARY OF 2019. THIS INFORMATION WAS FIELD VERIFIED ON NOVEMBER 13, 2020. DATUM: NAD 83 EXISTING VEGETATION: PAR77ALLY WOODED WITH (2) RESIDENCES ON THE PROPERTY AND EXIS77NG GRAVEL DRIVEWAYS. LIGHTING: NO STREET LIGHTING IS PROPOSED WI7H THE DEVELOPMENT. ALL PORCH LIGHTS MUST MEET THE REQUIREMENTS OF SECTION 4.17 AND BE BELOW 3000 LUMENS PHASING THIS PROPERTY SHALL BE DEVELOPED WITHIN 3 PHASES. CURRENTLY, THIS PROPOSED PLAN INCLUDES PHASES 2 & J. BUILDING SITES: 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 TMP 56A-1-26). THE CEMETERY SHALL REMAIN AND WILL BE PRESERVED K17H THE DEVELOPMENT. STREAM BUFFERS: THE 100' STREAM BUFFERS SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE K17H THE ALBEMARLE COUNTY WATER PR07ECTION 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 INFORMATIONAL PURPOSES ONLY WITH THIS SET. LANDSCAPING: STREET TREES SHALL BE PROPOSED WITH THE FINAL S17E PLAN ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS SET FORTH IN SECTION 327.9 OF THE COUNTY CODE. TRASH: EACH LOT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER. IMPERVIOUS AREAS: PHASE I EXISTING BUILDING & STRUCTURES 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 II PROPOSED ROADWAYS & SIDEWALKS 121,175 SF PROPOSED RESIDENCES 132,140 SF PROPOSED DRIVEWAYS 35,280 SF TOTAL 288,595 SF (6.63 AC) PHASE III FUTURE ROADWAYS & SIDEWALKS 14,650 SF PROPOSED RESIDENCES 67,925 SF TOTAL 82,575 SF (1.90 AC) STORMWATER MANAGEMENT • A STORMWATER MANAGEMENT PLAN IS PROPOSED WITH THIS WPO PLAN TO TREAT PHASES Il & III OF THE 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 CONSERVATION AREA BELOW THE POND's LEVEL SPREADER, AND TWO VEGETATED FILTER STRIPS BELOW THE TWO UNDERGROUND DETENTION SYSTEMS' LEVEL SPREADERS ARE PROPOSED Wl7H THIS WPO PLAN TO MEET MINIMUM STORMWATER QUALITY REQUIREMENTS FOR PHASES ll AND Ill. ALSO, THERE 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 I LIMITS OF DISTURBANCE = 1315 AC (WPO 201900003) PHASE I BORROW AREA=2.36 AC. (AMENDMENT #1 TO WPO 201900003) CONNECTOR ROAD LIMITS OF DISTURBANCE = 1.99 AC (WPO 201900027) PHASES ll & III LIMITS OF DISTURBANCE = 16.99 AC (THIS PLAN) OFFSI7E EASEMENT. ALL PROPOSED GRADING SHALL BE CONSTRUCTED ON SITE OR WITHIN EXISTING RIGHT-OF-WAY. NO OFFSI7E EASEMENTS ARE PROPOSED WITH THIS DEVELOPMENT. NOTES 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 THE 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 WP0202000053 WHITEHALL DISTRICT ALBEMARLE COUNTY, VIRGINIA El i. 1 , j -.._ \ -- F--- -- F `- 1 1, ❑ p\ �\ \ '\------------ ------ \ 1 1 1 ! \ \ \ \ ❑Ll 1 EXISTING RAILROAD i \ I ❑ � �i(, \,ill l \ r/f I i ❑ FUTURE ^ PHASE I?' .. \ PHASE III C 4 ❑ - - ❑ 1 O \\ `•.\ `'\ `\ \ 1 _' ' CLING G CC \ v PHASEI FUTURE y r II PHASE III 1 ❑ , -7 T . i , � `' V \\ � , •" ` - � -- i PRIVATE ALLEY %_- � \\ `• c` ; ' nY \\ \ � 1 1 I I I I I I ❑, / ,� � � \ i 1 1 1 I I I l �" � 1 1 1 '1 1 PHASEI � ❑_ � I 1 WK - \ VU _ - I DI I r---- \ T ❑ i' O - I ❑ I j 0 I i I ..� --- � ❑ ' // I I L___. ❑ I i i i 7b � i — - - i — I -- PEACHDRIVE _TREE ._..____ - -- , -------------------''---' LI i 1 _ --- i. O �. \ O --- ❑ ` RD DRIVE _ - _ _ I j 1 I ❑_ Q� - ---- --------1-------- �0j SHEET LAYOUT SCALE: 1" = 150' LEGEND EROSION CONTROL PLAN/METRICS SAF SAFETY FENCE * 3.01 OP OUTLET PROTECTION 318 - EDGE OF PAVEMENT CURB 200 � PROPOSED CONTOUR SEDIMENT TRAP OR BASIN CRS ❑ CONSTRUCTION ROAD STABILIZATION J. RR RIPRAP 3.19 SOIL BOUNDARY BUILDING DRAINAGE DIVIDE CE CONSTRUCTION ENTRANCE 3.02 RR O unuTY STREAM CROSSING 325 -PROPOSED ASPHALT LIMITS OF CLEARING GRADING SF SILT FENCE 3.05 SAF TEMPORARY SEEDING 3.31 STREAM BANKS LIMITS OF DISTURBANCE DIVERSION DIKE aINLET PROTECTION 3.07 PS PERMANENT SEEDING 332 _ _ _ _ 100' WPO BUFFER _ PROPOSED EASEMENT, O RIGHT-OF-WAY DIVERSION O- TREE PR07ECT70N 8TEMPORARY 8 DIVERSION DIKE 3.09 O TREE PRESERVATION AND PROTECTION ® VARIES WITH SHEET DRAINAGE PIPE DRAINAGE SAFETY FENCE RWD TEMPORARY RIGHT-OF-WAY DIVERSION 3 11 DC DUST CONTROL 339 iii v BENCH MARK VDOT STANDARD STOP SIGN SILT FENCE PROPERTY LINE ST SB TEMPORARY SEDIMENT TRAP SEDIMENT BASIN 313 314 * VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK SPECIFICATION NUMBER PROPOSED HANDICAP PARKING SPACE STRIPING OO OO OO OO PROPOSED CONCRETE OO OO 100 YR. FLOODPLAIN ® INLET PROTECTION RIPRAP, OUTLET PR07ECTION OR CONSTRUC7ON ROAD - - -200 EXISTING CONTOUR STABILIZATION SCALE: 1" = 2000' ` LAUREL H /ILLS CROZET[Ell CROSSING GRAYROCK WAYLANDS 4VAYLAND PARK tI GRANT , SITE Starr Hill Breti Crozet z� "4 REA PARKSIDE VILLAGE lards . 9` Old Trail Golf Club Q ,MI PARK VIEW ❑ BROOKWO 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 II EROSION & SEDIMENT CONTROL PLAN 9 PHASES II 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 8* *GRADING & DRAINAGE PLAN 9* *GRADING & DRAINAGE PLAN 10* *GRADING & DRAINAGE PLAN ►zi 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 THE HOUSES FOR A MINIMUM OF 10: THESE SHEETS ALSO SHOW THE TOP & BOTTOM ELEVATIONS OF THE RETAINING WALLS. PROJECT NOTE: THIS PLAN MEETS MINIMUM SWM REQUIREMENTS FOR PHASES II & III AND MINIMUM ESC REQUIREMENTS FOR PHASE II & PHASE III's LOT GRADING. THE FINAL ESC PHASE FOR PHASE III OF PLEASANT GREEN WILL BE HANDLED UNDER A SEPARATE PLAN. 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 SCOTT/R. Ct •LLINSIZ No. 35791 ,1, 3/24/21 47J U Z Z o r J a 0 U U m c r w _j r J H` z o a E c vl Z / W ` ce L O ti cM ® M 0' z N M � J N O 00 / 1 N LL N C i \�G LU/ Jcn _ LULU In Ln O = LU 2 0-O > U I Y z W w LU Ul U) W F-: Z LULU `v 1 z JLU Q LU Q ^J^ O CV U w w JOB NO.� 182154 SCALE AS SHOWN SHEET NO. 1 ---- -- \ I \ ----__=-------------- -- , — — — — — — — — — — — ---------------- `______________ "Ei i i i i RI I I I ID BEEFI CONNECTION TO PUBLIC STREET PROPOSED UNDER — llll STIN GR 11111111111111111111111111111111111111111111111111111111 - - - - _-__--______I FIRE HYDRANT PROPOSED UNDER PLEASANT GREEN GRADING PROPOSED WITH PLEASANT GREEN PLEASANT GREEN PHASE I ROAD &UTILITY PLAN -SUB-2019-0 0 0 71 ------------------ --- ----- — - BLOW -OFF PROPOSED UNDER PLEASANT GREEN-'` PHASE I ROAD & UTILITY PLANS Si00071 PHASE I ROAD & UTILITY PLAN SUB-2019-00071 ---- �' PHASE I ROAD &UTILITY PLANS SUB-2019-00071 �` ^ 'C \ E IN ]STANCE TO NEAREST INTERSEcnoN - - 3 r-�=L \ rh \„ EXISTING RWSA iz' DI WATERLINE O EXISTING 8' WATERLINE PROPOSED WITH PLEASANT NT OF BLUE RIDceAND JARMANSGAP TP - T NG RWSA DI WATERLINE-- _1_ :.o GRAVEL ROAD KEEN f a - oaD ? EXISTI az" - _ -G PHASE I ROAD &UTILITY PLAN -SUB oag 0007a -- i - - - - - o \ \ _ MCCOMB STREET ROAD CONSTRUCTION__ w w PROPOSED UNDER PLEASANT GREEN, w 1 --- ---- ' _ _ _ IR -- w - - - / / / { HA & UTILITY 201� 0 � P S AD PLANS SUB L53 No. 35791 3/24/21 �� - ---- -- -- - - _ _ E - r / - - < 1a a u EXISTING ----z------------ _ -- - - - - ��;--' __- '� "" - XISTING ACSAS" DI WATERLIN - T_, r,„/ % PCCESNSEM NOPO/ _ - - - - --- '\ a s2i 4 GSrR »o \.. RENOVATED FOR USE BY / i / .'' `w :,..,\ 1 -- \, �.. \ t, MERGoNpccEss�kpG.i9� *' ,/ _ _ �' - ?� % THE NEIGHBORHOOD / :_•� , ;\ -\, zo' PUBLIC DRAINAGE EASEMENT - - /5z6y, PG. zg \ _ - — f CULVERT #a (APPROVED UNDER / A_ _ - - _ j __-<_ \\ 7_- - EXISTING HOUSE TO BE / • _ L ° CONVERTED TO A CLUBHOUSE ' ° FIRE HYDRANT PROPOSED UNDER PLEASANT GREEN PHASE I ROAD & UTILITY PLANS SUB-2019-00071 M. \ XISTING RWSA 1z" DI WATERLINESUB zoag0007i & WPO zoa900003), _ - - -- _ ) ./C23 '- STORM SEWER PROPOSED WITH' - _,TO BE REMOVED WITH THIS PLA � ' �_ -' I `,'� \ ;ii�\\ �� C CE A'z L IF IT HAS BEEN BUILT AT THE TIME ' <�-'- n PLEASANT GREEN PHASE I ROAD \ �;,, ` �n \�,-\ r 1'OR y m, O J,,_OF THIS PROJECT's CONSTRUCTION. v a0'WIDE PAVED EMERGENCY ACCESS R& UTILITY PLAN - SUB-zlj-0007a �' ','- _, /8" DI WATERLINE PROPOSED UNDER PLEASANT GREEN TA{P 5 R UR J' 321 P 6 (PLA) �C\ ; PROPOSED WITH THE PLEASANT GREEN PHASE I - - - / / / PHASE I t d \' , - "r+ PHASE I ROAD &UTILITY PLANS SU_B-v2019-00071 AR DR / \ \ O c = ROAD & UTILITY PLAN - SUB-2019-00072 \ , � -, i \- F P 36 P pB R6 \ v y _ ca TO BE REMOVED WITH PHASE II AND \ / s % X OB PC 34 ti0N1 o r REPLACED WITH MCCOMB STREET � I ) \ / / \ 65 i \ � r v EXTENSION ,' - \ \ ,',' , Q=�� " s� 'DING PROPOSED WITH PLEASANT GREEN \ O I- c PHASE I ROAD &UTILITY PLAN -SUB-zoa o0o i z zo'PUBLICDRAINAGE EASEMENT 9- 7 �� - .. h A rr i > \ i \,' (��3 a D.B. 5z6y, PG. 297 z0' UTILITY EASEMENT \ _ _ c FRAME - ` �- \\ \ r O I \ �L� `' , �' i D.B. 5264PG.z97 T 56A1-1 F W SHED v ' > \ r ` sg', i t \,.' i a i I A �� V / r. .' Y 1 //??�� (\/ ,' _ > _ _ _/ ,.air' 6" SDR-26 PVC SANITARY SEWER LATERAL 0 N/F ILV M �,, i, \\r� ' ROPOSED WITH PLEASAN GREEN PHASE I DR 5 034 \ V I _ - / (Q� ROAD & UTILITY PLAN - SUB-2029-0007i DR 1411 PG 367 (PLAT / I 8" DI WATERLINE PROPOSED UNDER PLEASANT GREEN U12 \ ZONING: R6 \ \ E/ PHASE 1 ROAD & UTILITY PLANS SUB-2019-00071 / i -°v / O STANLEY MARTIN COMPANIES Li __ ' ` `\ �'�. S - _ ..I�-- TMP 056A1-01-00-02500 PHASE 111 �` / STORM SEWER PROPOSED WITH \ ;O �� -�S \ `' '1f ,I \ O o, / - / 1.8500 ac. }_-- PLEASANT GREEN PHASE I ROA ® .�( `\ % TMP 6 -35 - O EXISTING CUL-DE-SAC / r �3 ci� a / - ' DB 5226, PG 309 �� '' & UTILITY PLAN - SUB-20i 00o 1 \ ` a -� \ �`\ ` \ \ TO BE REMOVED WITH /' / - \ 6 / N/F IT. , MISTY DARNELL i w� PHASE II CONSTRUCTION _ ,' - �- STORY FRAME__-- '\�\SV 62 PC 12 0 \� \\F . DR 576 PG 3 PLAT / `J w ON CRAWL/ / v / __- I I zo PUBLIC DRAINAGE EASEMENT \ J � I � o EXISTING SANITARY SEWER ' ' - \ w ' / \ PARTIAL CELLAR �' I I \ D.B. a6 PG. 297 R6 i TMP 56A1 i-� / , 5 4r / LINE (TY1 .) N/F PIR Y, H L. � TO BE REMOVED AND EXISTING ,, ,. ,' / --- --- - ,' �' ,� ,'' / 20' PRIVATE DRAINAGE EASEMENT - r 4 \'. \ \ \ OR EASEMENTTO BE VACATED / \ i ' \ J r \ `R \ - D.B. 5z6y PG.z97 ---- BM DR 2143 PC \ ° STANL P MARTIN COMPANIES LLC 2 , / , i �� (` r / �\ \ \ \ o TMP 0 - - -02900 TOP H 7 56A1 01 00 \I i PO�,� ,' '� ' � � � STORM SEWER PROPOSED WITH azz � �° \ \\ c�\\ M 2 .53 DR 150 PC 23 (PLAT) ///\\\ \ o . / --------' .'� of �' .' / DB 52269 ac 309 II / rr O OUS 'i /' , ' ,, \ % , / i J \\�\ G: 6 \ a> , � . , PLEASANT GREEN PHASE I ROA < t \ � o _ / �' ` \ - I_ '�`_�d ' ' & UTILITY PLAN - SUB-20i 00o i N-s w N N N g- 7 zo' UTILITY EASEMENT PHASE 11\,� -�5—\�:. D.B. 5z6y, PG. 297 \ i / \ 0 N N �' i / - �e TO REMAIN DURING �� / �/� ' r �J TEP. . M _ a s-- / / ---- LEY _ T \ / 56A1-1-33A \ ° PHASE II CONSTRUCTION , ^ / - - - \ R1uNATEs ET / - \ \ N F BA ER, JAMES L. OR \ ' _____--''`, GRADING PROPOSED WITH PLEASANTGREEN-azz}' - ' - a y. v` DLORESJ. G� --r- ry ' ,'\ / C6 C , I e V990 PC 389 \ '� /� ■ '-_ V / / r '1..6i L63 6 `--- H SE I ROAD &UTILITY PLAN -SUB-zoig-0007a- - r i _ ': , I\ \ B a > C2 o C28 '� - \ _ i2 P /` _-_ - --- I\ DR 1980 PC 534 (PLAT) to \ __-- z0' PRIVATE DRAINAGE EASEMENT - I I TOP OF .85 - -19 I ZONING: R2 _ - ----- zo' UTILITY EASEMENT D.B. 5264, PG. zg7 t_ I _ \-- - \ O - /Y. EE STREET ROAD CONSTR CTION -- D.B. 5z6y, PG. ag7 _ %I TM 56A1 -33 \ i f \ I - / / ■ \ ----- -- ,� PROPOSED UNDER PLEASANT GREE �4_ I l - i N F SH DAN OR \ � NE PHASE I I __ / PHASE I ROAD &UTILITY PLANS SUB-2019-00071 __ FIRE HYDRANT PROPOSED UNDER PLEASANT GREEN I I I STANLEY MARTIN COMPANIES LLC / / ,^I \ \ I i , r r I : I I \ \ ANG \Ai' TMP 055CO-03-00-OOCIAO ,�' ,' `I-�\ �z______\ rEs. / ,� , , �2°� '� r reap PHASE I ROAD &UTILITY PLANS SUB-2019-00071 �/ I \ DB 2413 214 JER�'M -�MP 5 -1-32 \ M ,. ,, / r , I I ___ �� x\ bII, \ Tz,� I B 1980 PC 53 (PLA N/F RARER, ✓AMES L. Lu --- DB 5226, PG 309C:6r,%- / / I 1,ZONING: R" 0 ® M - ____\\ i-zF�\ , - _ - 6" DI WATERLINE PROPOSED UNDER PLEASANT GREEN ,,/ /d ', rl ' / IQ - - - i r I D 5 PC 474 w - / , '\ - - - \ PHASE I ROAD & UTILITY PLANS SUB-2019-00071 , ; A ��I GRADING PROPOSED WITH DR 12 PG 397 PLAT N --- _ �Lu - EXISTING aoo' WPO --- / , ' \ I P - / �J, PLEASANT GREEN PHASE ROAD l / i/ 1 s r _ -----'> / r l 1 Z NIN . 6 / S`TANL Y MARTIN COMPANIES LLC'.'' _�' / ' / / / \ R3 I I N g �7 / TMP 56A1-1-32B C'7 _ STREAM BUFFER / `_ / , ,LIMITS OF PHASE / , ac. A-) STREAM N i , � ,_, \\ --T.� \ TMP 056A1-01-00-02600 - az� ,' , � - ,- 'j,/ - � j, "� � -- ,', / � � r� I I &UTILITY PLAN -SUB-zoa o0o a�0! '/ Q.■ Lu i FROM STREAM BANKS CONTIGUOUS / / _ i / ,' ,�j �rf� < '-'-�'s� / , �' ,I■� /,'�, I ! I \ N/F BABER, JAMES L. ,- w ; WETLAND AREAS AND aoo' FLOODPLAIN . ,' CEMETERY SHALL DB 5226, PG 309 _ / �/' ¢ f zo' UTILITY EASEMEN / " / ALSTON STREET ROAD CONSTRUCTION N \" - / __ '`° . 0 J l /r/ OR DECOKES ✓. i ■ NOT BE DISTURBED-__r i -FIRE HYDRANT PROPOSED UNDER PLEASANT GREEN %' L D.B.5z6y, PG. z97 r PROPOSED UNDER PLEASANT GREEN \ DR 1222 PG 394 - - - _. - - _ 1-' HA PLANS - - / _ ZONING. R6 U LAN 0 j j' ,' � �\ v°\\ / PHASE I ROAD &UTILITY SU�019 00071 � N PHASE I ROAD & UTILITY PLANS SUB 2019 007 i0 O 7 / : � � � \ \ (397 PLAT) z - �z ' ,' ,' / __,. yam- - I \\ - /� / __ BLOW -OFF PROPOSED UNDER PLEASANT GREEN 'i /, .µy' / /' \ \�� _ , STORM SEWER PROPOSED WITH TMP Al-1-32A \ ' / \ ` \ --' k------- -----'/ _ /// \ - PLEASANT GREEN PHASE I ROAD N J /' ^ \ \ \ �` / - ___-_- PHASE I ROAD & UTILITY PLANS SUB-2019-00071'// t - \ N/F ZEL R, TROY / L.L E, / &UTILITY PLAN -SUB-zoi o0o i N ----- _ . 9 7 DR 21 4 PC 658 __, s" +_- _,'/n. / i k Jdf 4 /, / / I I / �1, it DR 250 2 CAT) i __ _ ; ----- PHASE PHASE II PROPOSED / �� \ �,. ' r 8" DI WATERLINE PROPOSED UNDER PLEASANT GREEN ZONI C: 6 > z / — / '-- - ---{ ----- - CONNECTION 5 26 ASE I R PLANS SUB-2019-00071 --' — _�= AN ID� i I 'Z') �\,�� `��� .'/�,° \ ,/ ROAD & UTILITY PLA ROADWAY EXTENSION PH CTION TO TMP 6A i \ 8" DI WATERLI PROPOSED UNDER PLEASANT GREEN' _^( S \ % O PHASE I OAD & UTILITY PLANS SUB-2019-00071\ \ �9 f--•y�,� / , (/�Lu 20' UTILITY EASE ENT ���� I v W Lu STORM SEWER PROPOSED WITHL9 O Q ' /-, Y� `__ GRADING PROPOSED ITH PLEASANT GREEN` eo a LEASANT GREEN PHASE I ROAD — J --_- / EXISTING STREAM y - \ PHASE I ROAD &UTILITY N -SUB-zoag-0007a - &UTILITY PLAN -SUB-zoi 00o 1 / �,� VDOTSTANDARD ROUNDABOUT PROPOSED, ' \\ 20' PUBLI DRAINAGE EASEMENT,// /qz _ \\ \ _- ` ` `� k� \ "- WITH TH PLEASANT GREEN PHASE I ROAD \ G \ D.B. 5264, PG. 297 °�i P 56-115 - - ` _ - .\ `_ __ - - - _ - k� \ UTILITY PLAN - B- 9-00 i _ \ - _ _ -- _ \ E& U SU zoi o7a \�- -- --- - -_-- / `� \� ` _`\ `- 'F\ \ I i • \\�\ / _�\_ -- - ---- ------- --- f` �\ w —w� �� �1- `� _ �\ XISTING 100' ,'\ \.. I I \ _. / / ,as'�, cJ , \ w Q \�\, \ \ EXISTINGSTREA �bST AM BUFFER \1' \ y�i t W 7 ----- /YJ6 �k \\ /� L� ___---N/F, VUR REALTY-` \\-_ _ \ ��\ �� �� \ \� \�/� \ ' Y\\\ \ I I III II --` .Fy fi / � O -PAR Tii SANITARY SE PROPOSED UNDER PLEASANT GREEN \ , h \ _ - - �� - PHASE I R D &UTILITY PLANS -SUB-2019-0 \ 'I = I III ""_-'' , _ BIO-FILTER PROPOSED WITH PLEASANT GREEN / --- --- - -- C� - \ \ \ ' J OOi 1 1 ICI I \ \ ' ' PHASE I VSMPPLAN - WPO-aoi o000 ~ V DR 4858 P�582 _ # - _ 9 3 --_- — _ - _ ----- \ --- \, i `y_ ® , , I \� II I, S I I II \ SWM EASEMENTZI v v V vv v @\ I� � I ` _ � � � I � � vv vv I v I v � V / 7 I \ `I \ i ,/ -- �" ^ II II I �I v ; II I I II III \ \� -,D.B. 5z6y, PG. zg7 w \IIJ � I III WI � �,�•-_____----------- ---yJ n' - - - \•` •`- �`� \\ `, \\ \, \`\\, II II III \ I / 1 \I i II �Z \ �,, I a+ I Z..®I ® �s , -------- J 1 s _ j,�® � W \ \ \ \ \ \ \ \`\ ` �\ /— X I I ® / I ® PROPOSED (UNDER SEPARTE SET OF STAN Y MARTIN COMPANIES LLC ------ PLANS) 200-YEAR FLOODPLAIN LIMITSUJ -L33 - I TM CWISM-01-00-030A0 ; PER HEC-RASANALYSIS PERFORMED BY _ _ Q J __ DB 5 0�� 9 COLLINS ENGINEERING IN APRIL 2029, TYP.-- \\\\` ' _ NGINEERING vvv v v I I I p®® ®®� _ o v v v A v `� vvA`� �vVv�vV vv ® I �s " ,' ®®b EXISTING -YEAR FLOODPLAIN LIMITS _ O RAMBLIN BROOK LANE CONSTRUCTION/ \ \`- ® ®/' PER HEC-RAS ANALYSIS PERFORMED BY N 9� I III® �\ ` .� ` �® COLLINS ENGINEERING IN APRIL 2oi TYP. PROPO ED UNDER PLEASANT GREE ® vv v �w ®® _ CONNECTOR INS - SUB-2019-00058_-- \ v v A\ vA V v v v vAv v A I®I®I GRADING PROPD UN D R PLEASANT GREEN®I ioi ® / v Av vv v v v A vA V A 1 1 1® \ v v v v v v, A V CONNECTOR R�1D P, NS -SUB-2019-00058 1 1 1 1 I011�� ®i vvv v v v v ®i - - ® -\ I®ILL v I ,�' '-' w VA Z ® lei �I 1` 101 , JOB NO . __---182154®v _-- SCALE®®v 611 Vvv v vv v v v v ®o®4 i ®� - -------- = ' vv ,' n vv ✓ . .I v v ` ` vvv vvv vvvvA V\v vvv Avv vv I v vv ,`S vv vvvvA v vi V�� — _d I I �®d v I I v v v — -- - - ---- - --- SHEET NO. ----- -- ®®"�®®®®®® 29 I s 09®®® ®Q Line Table Curve Table ADJACENT PROPERTY OWNERS INFORMATION !\ �\ 1 \. ` ;� ' --------- Line # Length Direction Line Length Direction Curve Length Radius Delta 9 9 TAX MAP PARCEL `--________ \ \ NUMBER OWNER ZONING ACREAGE D.B./PG. _ + ' `----�` ------------- -----_ La 105.516 N1o°z4'3o.7o"E L36 1z8.5zo 534°36'46a5''E CI z46.799 z7z.000 048.9008 ---___ --- Lz 57.777 N25°26'24.57"E L37 87.76o SoB°13'1z85'"W Q 352.277 228.000 088.5262 A 56A1-05-00-000A0 STANLEY MARTIN COMPANIES, LLC R-6 4.24AC 5226/309 1 _ \ o II \ 11 \ �\ ��_________ __ __ --------- =f- L3 30.010 S64°33'3543"E L38 82333 S17°04'0315"E C3 19.971 12.Soo 091.5408 B 56A1-01-00-030A0 STANLEY MARTIN COMPANIES, LLC R-6 0.50AC 5226/309 _ i \\ / 11 \\ \\-------------------------� L4 27.002 SIP38'o6.67"W L39 -5.230 S54°4i3736"W c4 42.052 200.500 012.0170 C 05600-00-00-11500 VUE REALTY PARTNERS, LLC R-6 21.85AC 4856/582 - / ❑ \ ` --�-- - ---\T- ' __ L5 27.011 N58°29'a4.98"E L40 16o.000 N65o24'og.64"W C5 225.685 3o6.500 042.1B86 D 055CO-03-00-000BO CROZET CROSSING COMMUNITY R-6 4.18AC 2228/122 // ---\` `\ 11 ` ; ly- i / \ 1 ----- \ _____-- ------ L6 49000 N75°23'22.48"E L41 80.16o N68°59'o2.64"W C6 1 13.883 1 333500 002.3851 E osscao3-00-0170o MORGAN,TERESA R-6 0.28AC 1407/560 -------------J--------- L7 5790 N14o36'4135z"W L4z z56.839 N63°zo'zo.6y"W C7 15.az9 z3.5oo 036.685z F 055CO-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- L8 9773 Nob°31'ozz8"W L43 Sz.001 N63°zo'zo.6y"W C8 133345 z5o.5o0 030.4995 H 055CO-03-00-02000 SALISBURY, BONNIE L R-6 0.27AC 1444/206 /' - - / ---- -- - - - - - L9 59.z36 N04°54'3911"W L44 3345 N67043'z1.58"W Cg 50.043 Szy.Soo oo5.y667 \� _ _ _ _ _ __ / 055CO-03-00-02100 RASCLE, SERGE OR PENNY CHANG R-6 0.30AC 3392/158 - - \ - - - - Lio 1g.8o5 Nz5° zg' z5.8o''E Lys z8z.y83 N61°4Y 37 Bi'W CIO 17.S10 1z.5o0 080.z608 - - - - - - - - - - - - J 055CO-03-00-02200 CROMER, SHIRLEY R-6 0.29AC 1337/295 0 \ Lai 16.426 N25°29'25.8o"E Ly6 5o.ozo N56°56'39.64"W Cn 3z.864 xz5.500 oo8.o96z \ �� \ \ \\ �\ _____� K 055CO-03-00-02300 GREENLEE, CLYDE V OR CARRIE L R-6 0.30AC 1352/322 ------------- 86 S ° z ' o "E L 68 N 6 "W C 1 612 B oo ooa 6o6-----$-- No. 35791 3/24/21 L1z 774 51 3 59 3 47 zz . 00 54 53 37 4 12 3 4 55 4 \ \ \ L OSSCO 03-00 02400 MARSHALL, NANCY H OR REBECCA E R-6 0.27AC 4388/295 ; p _ _ -- - _ i L13 43130 S38'38'z6.03"E Ly6 219.985 S38'38'44.36"W C13 36.z38 47.Soo 043.7217 �\ / / \ \ %� i M 055CO-03-00-02500 BRADLEY, BONNIE LEE R-6 0.27AC 1383/377' L14 29.440 S22002`07.o3"E L49 1o.66 N49°55'50.61"W C14 39.188 57.500 039.0488 ` / 1 \ \ / ____ - 7 N 055CO-03-00-02600 WOODSON, RUSSELL WILLIAM R-6 0.29AC 3488/513 i \ _____ ___ O _ Lg 13.610 sn°oz'o7.o3"E L5o 5o.on sy1°5i y7ai'W C15 z1338 4b5o0 0=sa38s O 055CO-03-00-02700 THACKER, JAMES E OR BERNICE E R-6 0.24AC 1870/153 - Lab 42.980 512°5i17.03''E L5a 251.783 536°00'56.30''W C16 51576 482.500 oo6.2245 P 055CO-03-00-02800 LEWIS, RVAA R-6 0.22AC 1330/202 L17 89.730 S38°3140.97"W L52 21.412 N45°25'44.29"E C17 8.232 84.500 005.5819 CZ OSSCO-03-00-02900 VONN,MICHAELE R-6 0.22AC 5023/422 ' ` j/ \ ----------- - / / `- w N l L16 38.5z0 S01°33'z9.o3"E L53 a7z.3oo N45009'5x.z3"W C18 57756 7zz.500 004.S8oz R 055CO-03-00-03000 LUECKE, ROBINJ R-6 0.31AC 3612/210 / \ / ' \ oPD \ / /- �'r wT - J ; Lag 9.990 518'11' zS.03"E L54 1oo.ow N43°29'52.23"W C19 46.991 147a5oo oo1.8285 S BUCKINGHAM BRANCH RAILROAD 1 / Lzo 5vzo9 518°zi z5.o3"E L55 zo33oo N42o 56'5z.z3"W Czo z87.43z 38u.y7o 0o4.31g7 \ %' \ I `1 PVE / - %' \ i / Z J Lz1 109.956 Szg°46'05.76"E L56 5zyyo N25o 59'24.77"E Cz1 68.4Sa 17z.00o ozz8ozo \\ // RP\�R0 t� /' / _ -' _ o I ' ) / O Lzz 34.z49 Sz9°46'05.78"E L57 7z.833 N44'15'z6.8 "W Czz 67795 4 zz8.000 017.0367 A / AV , / '' _ / I � ' i ,' / � W � i / CULVERT #i (APPROVED UNDER / �■■' U L23 36.y67 Sy1°3z'ox.15"E L58 13.353 53o°55'zz.04'W Cz; 155.o8g 7zz.000 0123074 \ / \\ \ /\\ /' f�-' _ - 1 1 i /' SUB zoigoo07i&WPOzOig00003)_/ LU U f L24 49073 513°20'S459"E L59 113597 581°o8'1za6"W C24 14536 z3doo 0354403 O \ \\ ' / \\ 11 i I /� TO BE REMOVED WITH THIS PLAN f Lz5 73171 Szs°55'oz.93"E L6o 7.87x N77°z1'56.41"E Cz5 187.111 n3.5oo 050.2139 ,Y _ �'' IF IT HAS BEEN BUILTATTHE TIME �' �■■� O_ F_ f \ / / , T _ OF THIS PROJECTsCONSTRUCTION. to z i L26 136.ogo S26o 075o.15"E L6z 102.434 S47°35'53.8i'E C26 20.440 z3.5oo 0498345 ' \ ��'' // \ --I - \ I /I ' / _ ]` " Lzz 175100 546°33'a8aS"E L62 8.o83 S12°24'o6ag^W Czz 7x.18 z ___ // � I'/ LU f 5 75500 oa5.0068 \ c=- ' LU 245470 S56°32'34.15"E L63 z3389 S47°35'53.81"E C28 34510 268.5oo 007.3642 ' L29 97 000 N57o 40' 53.85"E L64 9.131g S47° 35' 55.6j'E Czg 244.384 424.505 032.9848 Lao 81.000 571°16'41.z5"E L65 15374 S24°36'46.52'E Cao 14.029 23.500 034.2046 L31 140.000 S52°54'1915''E L66 27.000 586°02'29.04''E C31 152.860 963.500 009.0900 Liz 269.000 S42°30'3o.i5"E L67 1o5.428 N25o 59. 24.77"E C32 32.624 23.500 079S415 L33 196.000 645°45'18a5"E L66 z59.000 551°o4'52¢3"E C33 4.875 333.500 000.8376 / / / / / / CH y, ' / >' L34 z35000 S37°33'38a5''E L6g g6.o79 N45°55'55 49"E C3y 180.767 306.500 0337919 L35 87.530 SBz° zz' 1yaS"E L7o 193.682 5600 24' z7 57"W w/- 00 M 1 0 I Q 1 0 I I LU 1 � I � O U i 1 1 z 1 � 0 1 w tl 1 LU NJ ;LU Ce EXISTING CUL-DE-SAC TO BE REMOVED WITH _A --; ' / 00J / - PHASE II CONSTRUCTION '/ / LU N N N 'EXISTING SANITARY SEWER TO BE REMOVED AND EXISTING p N N V / EASEMENT TO BE VACATED PHASE II , J jN am' /�,,3 ,/V✓-___� Cy) 0 CIO i N EXISTING COUNTY DEFINED i ,/' ��-'' '/ / --- s/ / / MANAGED STEEP ANAGEDSTEEP SLOPES,TYP. ■ 5/ ice/----_�// '/' / //' / % //' %'' J\\ \ __-_''/ ////;ZYF N LJ C) STANLEY MARTIN COMPANIES LLC '' ' '' /' /' ' X �X ,_i 'I l / /'� "~ i N FROM STREAM BA N TMP 055CO-03-00-000AO WET LU_ - X J LAND AREAS AN ----- ---- DB 52.28 PG / / ' /' /' /' i / i ',, / •\ \ / - -- Y, - - \ ' ------ ` 26 309 i \ /-164 EXISTING SANITARY SEWER 'EXISTINGFENCE ' // i '' ' \ \\ \\ LU AND EASEMENTTO REMAIN - - / TO BE REMOVED --------------- LU EXISTING 100' WPO- / / i // I / , ' --- / /' /,�____- - �� \ L9 STREAM BUFFER' / '/' ' '' _ FROM STREAM BANKS, CONTIGUOUS -- / ,/ ,' / / �__ n/ 9'/ / , /-- WETLAND AREAS ANDioo'FLOODPLAIN ` / / /', / \ , N EXISTING SANITARY SEWER y / / --- /r TO BE REROUTED -, --- _, �' `\ \� i / ,' / / ' �' /' �� \ _ i ' �/' EXISTING ioo-YEAR FLOODPLAIN LIMITS r' / i \ \ _---_-___ w --- fT \ \\� - - h -- - - COLLINS ENGINEERING IN APRIL i g-------- - ,/�sr------- ^' \ � \erg _, / � - __ �-__-_-__- - _ , , � � �� �,�'' , 1 ' 1 f HEC RAS ANALYSIS PERFORMED BY P i / ,'' mil\ // I ER ' / EERING of TY . __ `` _ /�'/ / / > '' / a� ' �� I /� II 1 I ,/ \\ -_\ r \\ lid �'% _ EXISTING COUNTYDEFINIEDPRESERVED � _- / /' % ' / � � / `-'" 1 //' __ � _ -.STEEP SLOPES TO REMAIN (TYP)-- 1 �.f � LU LU EXISTING STREAM ,/ , ' , / , \ p 0 LU -- - - _ J o' _ _ -= s �cs - _ _ - - - - - _ s - - - - - - __----- _----' '\�-''_,------- -- - - \ \ ----------------'-r` __ i //7/J \ / \\ \ �s �5 �s -5 -5 --- - ---- o I `---c,�`�_� \� \� ------ / -/-5\\�\\\� \\\\T\ I /c 1 I � ' I � I I I I I ❑ o F1 ILLi I i I IL_ L_ ' ; 1 I O a y E O C z a � J � z 0 H� Uj 0 U) W T< 0 i co z I 0 LU 01 (� U I zl LI..I LU ^J CL W d (n JOB NO. 182154 SCALE III =6o' SHEET NO. 3 II�,I,_(��I-I�I"I, / ` ' 1' ❑\,\� I , �I , 1''1, , � � �-_-`1-`._ ✓�" I 1 `' _-- "-�❑'"a , l 1'1------------- -- ly =" ' — �1 ❑ 1' 1 1` :_ _- -- 1�-------- ------ 1`, 1 `. , 1 ' r ,-------------- - _ =� �- i -, - ', ---- `I ----*---------------- `` ❑ \\ I 1,, I --Y------ -- r ---- \ 1El /� 1 ♦ 1 `. :- = -' - --- ----- PROJECT ❑ ❑ -5 \ 1 \ - , ' � L , , 1 1 ' 5 1 ' 1 __ OUN 1 ' 1 1 1'-----`--- -- l -- --A - - -❑ PRO - - 0 D LIMIOF - ----------------- 1,16.99 AC) ` - .` `.� \ \ 1 ❑ ____- ___ __ ___ � --- ",-� _____- � - - " No. 35791 3/24/21 N 00 1 i i — ;' - ❑ '\ // .____�- _ Y_/ � --1--� %/_ _,.' ,/ 056A1-01-00-02500 l;', // s/ PHASE LINE ❑1.8500 ac. -_ „- \ 0 o '% � �, O � � 0 � - ,�/-❑ \ ' ' �'__ _� _/'` ``, AN , /, '' ❑ // /w'-- i' \\ -_y - _ / ` \ \\\\\\/// u -moo 1 a a " ✓ BM / ' R -- S ANLEY MARTIN / PHASE O 1 / / \`\ / i r roP PHASE II _- , COMPANIES LLC -- /' -�;' \ -/ p Z \- l / ll� / /,�' '/ ,♦`\ _ -- - _ TMP 056A1-01-00-O2900\\- - _ _ - 1 j,. \ / / ❑ �_ j %/ \ ❑ \ -'!'� 1 11 / � _ 13.49 as .,'`� � / _ \ > ` ❑PR JECT' N �'' / s� '� ,y!/ a» " , / - DB 5226, PG 309 w _ " �1D ARY; ' ❑ '' o / E \--rt� - i i aw- J �_ v- IV \ L PHASE II & III e\ NE O F,- '� 1\ � � s� � ; / � ,/ _+. I ----"°- - --_ ' /� � I - - - - '��/; '�= :-' - \ PN / `t \i _ LIMITS OF DISTURBANCE _ _ M\ w N N N = ' DI BaIdC (1 9 AC) < /' : _ (16.99 AC) - ' I `. PHASE II _ , e _ _ _ - a °� N N E \ i / N ,p-,ri' , - - �/ - _- - S NLEY MARTIN '/' - - - / STANLEY MARTIN LX— --- - _ � _ L, -/ _ ', - PLE - ----- _ COMPANIES LLC i I ' x A ANT RE COMPANIES LLC x - ,- _-_ _ _ _ - , " - ' -.--`—; / ( '',,, -;a, _.TMP 056A7-01-00-02600; �' - WP020150000 ?' - -- - `----- TMP OSSCO-03-00-OOOAOW _ - ---- - - - -- �'' 9 3 _ ❑❑ , _ ' / LIMITS OF DISTURBANCE >_ _�`. _ -- �/ _ - DB 5226, PG 309 '-i' r= \ `'` 'ham_ —=_ _ _ /� -" (13.15 AC/ ',O -- 16.28 ac. � X. DB 5226 PG 309 (3 5 ) ----- .. ; : ' _ \ , ' -- ' - .e-' --' _ - - - -� ---- - ,-- - __ _ _ __ ' ---- , \` /� / /'•axe—_—' -- - - _ �- // i i %, .\ \ — ' - --'__----- ' ___,p L \ 4 \ r , - 4 5 5 1 PHASE LINE f • / // -\ may= X`X= \ \\,..� ,, x ' f -- - - X \ I 'I' I _ '= CN - - = = - PROPOSED t3NjITS OF \ DISTURBANCE (P�.99 AC) \\ ,� -''_. - _ -_ _ '-" ; - --'--- �;i� - _ _ -- � -- �� �\ \\\ \\ I / + I - - -= \ _� _ ;__ --- 'ter,:'`.' OD -_--- \ ems, N _ A „ - _ - 11 PROJECT \ - BOUNDARY _ _ I W , _ _ , Ir l --' - - --- .�► - -. ------- ----Lu Ail - -' .\ \ I e —' --- — — -- ----- PROJECT - -_ — - / ' _ - __ BOUNDARY I\C.\\�♦ - 9oe0000eoO\ _ ___-' . '� a J m ❑ ST LEY M TIN ° > -"_- ,i \.`� \ TMP 5M SO 0 OAO ,�D �...- op _ _ ;; 601.501E c.OLu _ _ - A o�Oec -- V \ \ C LC DB 5226, ' ::�,A;`,�'r,`.�`�: i-^�.� PLEASANT ° I 1 - __ O " IZZ I O Ii ❑ I ❑ ! , I I I ❑ \ D-- \ \ \\ ♦ \ ♦ \`. ``` \\ ` ' a ��_ - i /-I —1 `_� _� ---- ----------------------- \\ GREEN __ �� CONNECTOR �' v � r , / ROAD Q ^l I L _ _ II ' ' r I I 0 :.�: _-: "::: e` 2019000 I t♦\ i \ ____ _______' - --- --- I -/ \ ,/ .`y?,,1; e ° DISTURBA I \♦ '1 �.j " ' _ __ _ _ _ _ __ - _- � U I ` __ _� I I / `♦ r�(1VAV`1 1 (1.99 AC) a°000eeeea ", _ __ _ - - __ r `\ 1 I PEACH — / c. - _ = W TREE r -- DRIVE ----- /- / V 1���� ♦� �� _ %/� ���� �\ - v�, ---_- V � ' �'\ -// 1 ♦ - \ Lu I, ' —__—_ I I `♦ / '' `♦ �\\. .. :_ eP% /'/ it ' it �'' -/'_ - Dv AvV •-f� _ VJ -❑ DI _ Ln °� LU I_- 1 I O \ , /ORCNF\RD`DR6 E/ / e' W I — — — J - ' PLEASANT "` L ❑ v \/ ww _ — — ❑ — — — / GREEN �' / / CONNECTOR �V �/ ❑ / _- ROAD WY ❑ , ' 1 1 I 1 __ _i li O W P02o1900027 O �— ❑ \ �O \ \ / ' LIMITS OF J L u Q ❑ v �❑ _ — DISTURBANCE /. \ U ^^ 6 AC) \ 0 1..� 5 _ I I I O I a m ❑ I I y� ' IJ E ! I I 1 \ ♦\ / JOB NO. I 1 1 1 \\ ♦♦� ❑ \ /'� ♦♦� 182154 100 ' 50 ; , r 200 I I 400' ❑ I r I 1 ♦♦\ I 1 I I ' I ' \ \ \ /� \ \ \ / O SCALE ❑ ❑ ❑ r I� 1 , I IN [ I ET ) i I iI , I II I 1 I ❑ \ \ \ \ \ / \ `\ \ \ \ / / \ 15HEET OOI O 1 inch =' 100 ft. ❑--�-----�-- --❑__— i I I I ! ❑ OO \ \ / \ �F EROSION & SEDIMENT CONTROL EROSION CONTROL NOTES DESCRIPTION OF EROSION & EROSION CONTROL NOTES & NARRATIVE MEASURES: 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO 7HE SEDIMENT CONTROL MEASURES: PROJECT DESCRiPnON: PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TTHE COMMENCEMENT OF LAND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN DISTURBING ACTIVITY, AND ONE WEEK PRIOR 774E FINAL INSPECTION THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY IS TO CONSTRUCT THE RESIDENTIAL HOMES AND THEIR CORRESPONDING ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND INFRASTRUCTURE FOR PHASE l7 OF THE PLEASANT GREEN DEVELOPMENT IN CROZET, VA. THIS PROJECT PROPOSES TO DISTURB 16.99 STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING: MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL MEASURES: ac. OF LAND, IN ADDITION TO THE 15.57 cc. ALREADY PERMITTED (13.15 cc. ONSITE + 2.36 cc. OFFSITE). THE PROJECT WILL BEGIN EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR ITS CONSTRUCTION WITH THE PROPOSED ESC MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS ANTICIPATED TO BE IN 301 SAFETY FENCE: 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS IT IS ANTICIPATED THAT THE CONTRACTOR WILL USE A CONSTRUCTION ENTRANCE, THE SPRING OF 2021. THE WORK IS ANTICIPATED TO BE COMPLETED WITHIN 18 MONTHS AND TO CONCLUDE IN THE FALL/WINTER OF A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR RIPRAP, OUTLET PROTECTION, DIVERSIONS, TWO SEDIMENT TRAPS, THREE SEDIMENT 2022 THE CONVERSION OF THE TEMPORARY SEDIMENT BASINS TO PERMANENT SWM FACILITIES MAY OCCUR AT A LATER DATE IF MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY AS THE FIRST STEP IN CLEARING. BASINS, INLET PROTECTIONS, AND SILT FENCES TO CONTROL SURFACE DRAINAGE. PHASE Ill's CONSTRUCTION OCCURS DURING THIS TIME FRAME. THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE EX/STING SITE COND177ONS• CAN BE CONSIDERED UNSAFE BY VIRTUE OF P07EN7AL ACCESS BY THE PUBLIC. MAINTAINED ON THE SITE AT ALL TIMES. THE AREA OF THE PROPOSED DEVELOPMENT CONSISTS OPEN FIELDS AND EXISTING WOODS WITH LIGHT UNDERBRUSH. THIS SITE 5. PRIOR TO COMMENCING LAND DISTURBING AC7IVl77ES IN AREAS OTHER THAN ACTIVITIES STOCKPILE LOCATIONS SHALL BE ON SITE AND SHALL BE STABILIZED WITH GENERALLY SLOPES FROM THE NORTH TO POWELLS CREEK LOCATED ALONG THE WESTERN PROPERTY LINE. THE SITE IS GENERALLY 3.02 CONSTRUCTION ENTRANCE.* INDICATED ON THESE( PLANS INCLUDING, BUT NOT LIM17FD TO, OFF -SITE BORROW OR A TEMPORARY VEGETATIVE COVER. TEMPORARY STOCKPILE AREAS THAT ARE USED FOR GENTLY SLOPED AND IS WELL DRAINED. A STABILIZED GRAVEL CONSTRUCTION ENTRANCE LOCATED AT POINTS OF VEHICULAR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION STORING SOIL UNTIL A LATER TIME FOR SPREADING WILL REQUIRE MAINTENANCE & ADJACENT AREAS: INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD CONTROL PLAN TO 774E OWNER FOR REVIEW AND APPROVAL BY 774E PLAN APPROVING TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. AUTHORITY. SHALL BE SURROUNDED BY SILT FENCE AT ALL TIMES. PERMANENT SEEDING WILL BE THIS S17E IS BORDERED ON THE EAST BY RAILROAD TRACKS AND EXISTING RESIDENTIAL DEVELOPMENT. POWELLS CREEKS EXISTS TO CONSTRUCTION ENTRANCES SHALL INSTALLED SHOWN ON THE PLANS TO REDUCE 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE THE WEST. THE EXIS77NG PHASE I PLEASANT GREEN DEVELOPMENT EXISTS TO THE SOUTH AND EAST. SILT FENCE WITH WIRE BACKING, THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS ED IC CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS CONSTRUCTION ACTIVITIES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE DIVERSIONS, SEDIMENT TRAPS, SEDIMENT BASINS, INLET CONTROLS, AND VARIOUS 07HER ESC MEASURES ARE PROPOSED TO LIMIT THE DETERMINED BY THE PLAN APPROVING AUTHORITY. P07EN77AL FOR CONTAMINATION OF THESE ADJACENT PROPER77ES AND WATERWAYS. 3.03 CONSTRUCTION ROAD STABILIZATION: PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR OFFS17E LAND DISTURBANCE, 774E TEMPORARY STABILIZATION OF ACCESS ROADS SUBDIVISION ROADS PARKING 7 ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING S17E DEVELOPMENT MORE. SELECTION OF SEED MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED. OFFSITE LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT-OF-WAY AND AREAS LOCATED WITHIN THE OVERALL PLEASANT GREEN AREAS, AND 07HER SITE VEHICLE TRANSPORTATION ROUTES WITH STONE IMMEDIATELY BOUNDARY. AFTER GRADING. TO REDUCE EROSION OF TEMPORARY ROADBEDS BY CONSTRUCTION UN77L FINAL STABILIZATION IS ACHIEVED. TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE TRAFFIC DURING WET WEATHER AND TO REDUCE EROSION AND SUBSEQUENT REGARDING 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED LEFT DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH SOILS, OF PERMANENT ROADBEDS BETWEEN THE TIME OF 1N177AL GRADING AND FINAL FILTERING DEVICE. SEE SOIL DESCRIPTIONS ON THIS PAGE AND THE PHASE l EROSION & SEDIMENT CONTROL PLAN FOR BOUNDARIES, SOIL TYPES AND STABILIZATION. USE WHEREVER STONE -BASE ROADS OR PARKING AREAS ARE 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY FAST GERMINATING VEGETATION IMMEDlA1ELY FOLLOWING GRADING OF THOSE AREAS. GENERAL SOIL DETAILS. CONSTRUCTED, WHETHER PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTION AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED, CRI71CAL AREAS: TRAFFIC. CLEANUP TO MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL POWELLS CREEK AND /IS IMMEDIATELY ADJACENT WETLANDS ARE LOCATED ON THE PROPERTY. THESE ARE LOCATED DOWNGRADIENT BE MADE IMMEDIATELY. 3.01 SAFETY FENCE - SAFETY FENCE IS PROPOSED AROUND THE SEDIMENT BASINS AND FROM 774E PROPOSED DEVELOPMENT AND ARE CONSIDERED CRI77CALLY SENS177VE AREAS. THE EXIS77NG ADJACENT RESIDEN7IAL LOTS, 305 SILT FENCE., 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. SEDIMENT TRAPS THE RAILROAD TRACKS/PROPERTY AND 774E EXISTING ONSITE STRUCTURES PROPOSED TO REMAIN WI7H PHASE ll DEVELOPMENT ARE A TEMPORARY SEDIMENT BARRIER CONSISTING A SYNTHETIC FILTER FABRIC il. ALL WASTE MATERIALS SHALL TAKEN APPROVED WASTE AREA. EARTH FILL ALSO CRI77CAL AREAS. THE CONTRACTOR SHALL GIVE EXTRA ATTENTION AND CAUTION IN AND AROUND THESE CRI77CAL AREAS TO STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO R7 SHALL BE INERT MATERIALS ONLY, FREE OFF ROOTS, STUMPS, W000, RUBBISH, AND 3.02 CONSTRUCT70N ENTRANCE - TO REDUCE THE AMOUNT OF MUD TRANSPORTED ENSURE SEDIMENT IS NOT DEPOSITED ON THEM. TREE PR07EC77ON FENCING, SILT FENCING, DIVERSIONS AND SEDIMENT TRAPPING INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, 12 OTHER DEBRIS. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP IN LAND DISTURBANCE TO ENSURE THESE CRITICAL AREAS ARE MAINTAINED. AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL PER ZONING ORDINANCE SECTION 5.1.28. 3.03 CONSMUC77ON ROAD STABILIZATION - TO REDUCE THE EROSION OF TEMPORARY SEQUENCE OF CONS77?UC770N. CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE EROSION AND SUBSEQUENT i. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO SCHEDULE A AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW OF 774E CODE OF ALBEMARLE. REGARDING OF PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND PRE-CONSTRUCT70N MEETING. AS INDICATED. 7HEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUS7RlAL-TYPE POWER EQUIPMENT 2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PROTECTION FENCING SHALL BE MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9.00 PM. FINAL STABILIZATION. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE INSTALLED. HANDBOOK (VESCH). 15. BORROW, FILL OR WASTE AC77WTY SHALL BE CONDUCTED IN A SAFE MANNER THAT CONTRACTOR PARKING & STAGING AREAS AS NEEDED. J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING 774E CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM 774E MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, J. SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS. INSPECTOR ON THE PROJECT. 3.07 STORM DRAIN INLET PROTECTION. PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY 4. INSTALLATION OF THE PROPOSED CONSTRUCTION ENTRANCE AND ADJACENT SEDIMENT TRAP A' SHALL OCCUR NEXT. THE A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 3.07 STORM DRAIN INLET PROTECTION- STORM DRAIN INLET PROTECTION IS SHOWN ON CONTRACTOR SHALL APPLY CONSTRUC770N ROAD STABILIZATION AS NEEDED TO THE CONSTRUCTION ENTRANCE AND CONTRACTOR DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR THE PLANS WHEN INLETS ARE CONSTRUCTED BUT THEIR SITE'S CONTRIBUTING DRAINAGE PARKING / STAGING AREA. CONTRACTOR SHALL ENSURE THE CONSTRUCTION ENTRANCE DRAINS TO AN ADEQUATE E&S SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07EC77ON APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE AREA IS STILL BEING STABILIZED. MEASURE, AS SHOWN. CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED BEFORE PERMANENT STABILIZATION OF 774E CORRESPONDING DISTURBED DRAINAGE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR 07HER PORTION OF THE PROPERTY. 3.11 TEMPORARY RIGHT OF WAY DIVERSION- A RIGHT-OF-WAY DIVERSION IS PROPOSED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE AREA. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING ACROSS THE CONSTRUCTION ENTRANCE, WHERE SHOWN ON THE PLANS. PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED 3.11 TEMPORARY RIGHT-OF-WAY DIVERSION IS TO BE AT 75 LBS ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO / 3.12 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE PLANS. THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONS7RUCTED ACROSS CONSIST A 50/50 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH 3.13 SEDIMENT TRAP- TWO SEDIMENT TRAPS ARE PROPOSED. REMOVED IN THIS MANNER. DISTURBED RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN THE FLOW AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF 3.14 SEDIMENT BASIN- THREE SEDIMENT BASINS ARE PROPOSED. 5. THE INITIAL ESC CONSTRUCTION MEASURES, AS SHOWN ON THE PHASE I EROSION & SEDIMENT CONTROL PLAN, SHALL BE LENGTH WITHIN A SLOPING RIGHT-OF-WAY, THEREBY REDUCING THE EROSION POTENTIAL GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/f00SF. ALTERNATIVES INSTALLED NEXT. THE CONTRACTOR SHALL BEGIN BY INSTALLING THE PERIMETER SILT FENCE AND TREE PROTECTION. PERIMETER BY DIVERTING STORM RUNOFF TO A STABILIZED OUTLET GENERALLY EARTHEN ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR. 3.18 OUTLET PROTECTION -OUTLET PROTECTION IS PROPOSED AT THE OUTLET OF THE MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND DIVERSIONS ARE APPLICABLE WHERE THERE WILL BE LITTLE OR NO CONSTRUCTION 18. PERMANENT STABILIZATION SHALL BE LIME AND FER7LIZER, PERMANENT SEEDING, AND SEDIMENT BASIN. SEE THE ESC PLAN FOR THE DESIGN LOCATION. SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. TRAFFIC WITHIN THE RIGHT-OF-WAY. GRAVEL STRUCTURES ARE MORE APPLICABLE TO MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, 3.19 RIPRAP- RIPRAP IS PROPOSED AT THE OUTLET OF THE SEDIMENT BASIN. 6. ONCE THE PERIMETER EROSION CONTROL SILT FENCE AND TREE PROTECTION HAVE BEEN INSTALLED AND SEDIMENT TRAP A' ROADS AND OTHER RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR TRAFFIC. INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT INSTALLED WITH THE CONSTRUCTION ENTRANCE, AND THE COUNTY INSPECTOR HAS APPROVED THESE MEASURES, LIGHT CLEARING 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING 3.32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED WITH THIS AND LAND DISTURBANCE MAY BEGIN FOR THE REMAINING PERIMETER CONTROLS. THE CONTRACTOR SHALL BEGIN WITH THE A C DIVERSION:HANNEL CONSTRUCTED ACROSS A SLOPE NTH A SUPPORTING EARTHEN RIDGE ON A C / SHALL BE APPLIED AT 180LBS ACRE AND CONSIST OF 95Z KENTUCKY 31 OR TALL PLAN. INSTALLATION OF SEDIMENT BASINS B; 'C; D; AND E; SHOWN ON THE PHASE I ESC PLAN. FOLLOWING THE INSTALLATION OF THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT FESCUE AND 0-57 PERENNIAL RYGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS 3.38 TREE PRESERVA77ON AND PROTECTION- TREE PROTECTION IS PROPOSED WITH THIS THESE MEASURES, THE CONTRACTOR SHALL INSTALL THEIR CONTRIBUTNG DIVERSIONS AND ANY REMAINING SILT FENCE. STORMWATER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES. APPLIES TO BE APPLIED AT 80LSS/100SF. ALTERNA77VES ARE SUBJECT TO APPROVAL BY THE PLAN. SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS. FOLLOWING THIS, THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE I WHERE RUNOFF FROM AREAS OF HIGHER ELEVATION MAY DAMAGE PROPERTY, CAUSE EROSION CONTROL INSPECTOR. 3.39 DUST CONTROL -DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS PLAN. EROSION CONTROL PLAN. TEMPORARY SEEDING PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED. EROSION, OR INTERFERE WITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS, 19. MAINTENANCE ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH 7. ONCE ALL THE PHASE l EROSION CONTROL ITEMS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE IS PROPERLY WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED CONVEYED TO THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CONTRACTOR CAN BEGIN CLEARING AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS. IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 5OZ OF THE WET STORAGE THE REMAINDER OF THE SITE VOLUME IS FILLED Wl774 SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN 8. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN BEGIN ROUGH GRADING THE S17F TO THE CONTOURS SHOWN ON J.13 TEMPORARY SEDIMENT TRAP., NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION MAINTENANCE. THE PHASE 11 EROSION & SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE WITH A STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AND REPAIRED IMMEDIATELY. IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL CHECK ALL TAKES PLACE. ADDITIONALLY, THE PREVIOUSLY INSTALLED SEDIMENT BASINS B, 'C; D' AND 'E, AND SEDIMENT 7RAP 'A' AND AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT PERIMETER DIVERSIONS SHALL REMAIN OPERATIONAL AT ALL TIMES THROUGHOUT CONSTRUCTION AND SHALL MAINTAINED USE BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA /S WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF NEEDED. SPECIFIC Q /. THROUGHOUT THEIR LIFE CYCLES WILL CONTINUE TO OCCUR EROSION &SEDIMENT CONTROL PHASE l7. LESS 774AN 3 ACRES, WHERE 774E SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 NEEDED, SUBJECT TO APPROVAL BY 774E EROSION CONTROL INSPECTOR. ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS 9. PERMANENT OR TEMPORARY SOIL SSTATABILIZATION SHALL BE APPLIEDD TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL MONTHS, AND IT MAY BE CONSTRUCTED EI7HER INDEPENDENTLY OR IN CONJUNCTION 21. THE E&S INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS AS a. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN GRADE IS REACHED ON ANY PORTION OF THE Sl1E. TEMPORARY SOIL STABILIZA7ON SHALL BE APPLIED WITHIN SEVEN DAYS TO WITH A TEMPORARY DIVERSION DIKE. NECESSARY IN THE FIELD AS SITE CONDITIONS CHANGE. IN ADDITION, NO SEDIMENT BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AU774ORIZA770N. ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. 3.14TEMPORARY SEDIMENT N b I SEDIMENTT RGRAVEL L RMORE THAN ONE YEAR. SHALLA ATHE A TEMPORARYBARRIEROR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS SOIL DESCRIPTION WILL PREVENTPROPER DRAINAGE. IFKTHE IS CLOGGED SEDIMENT THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. SITEISSTABILIZATION la ONCE ALL CONTROL I THE PHASE // EROSION ITEMS HAVE BEEN INSTALLED ARE OPERATIONAL,, DRAINAGE /S PROPERLY CONVEYED TO THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CONTRACTOR CAN A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR PROCEED WITH THE PHASE Ill ESC PLAN. THE INSPECTOR SHALL APPROVE THE CONVERSION OF SEDIMENT BASIN E' TO IN "WET" AND `DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO 7B- BRADDOCK LOAM-2 TO 7% SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE SEDIMENT TRAP E'. SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING - CLASSIFICATION, SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0 8 THICK. REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE 11. THE CONTRACTOR SHALL BEGIN INSTALLATION OF THE UTILITIES, CURB AND GUTTER, WALLS, AND ROADS INLET PROTECT/ON DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80'. TOP OF THE BARRIER. SHALL BE INSTALLED ON ALL INLETS IMMEDIATELY FOLLOWING THEIR CONSTRUCTION. THE INLET PROTECTIONS SHALL BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A d.SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED TEMPORARY IMPOUNDMENT. 8C3- BRADDOCK LOAM, 7-157 SLOPES, ERODED. SOIL IS VERY DEEP, WELL DRAINED, MAINTAINED. MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. KITH SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE MUST BE PULLED AWAY AND 318 ourL£r PRor£cnoN: AND MODERATELY PERMEABLE. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT '" IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILLCLEANED BE THE RLD ANDOR REPLACED. / STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES 0-9" THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80. - OR CONTRACTOR ON SITE THE CONTRACTOR AT THIS TIME IS DIGS BROOK WOOD Wl7H 12. ONCE PROPOSED CONSTRUCTION IS COMPLETE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL THE PLACED AT THE OUTLETS PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT- 17- CRAIGSVILLE LOAM-0 TO 29 SLOPES. SOIL IS WELL DRAINED WITH A VERY LOW DIGS MAY BE REACHED AT 434 978 4435. IN ADDITION THE OWNER MAY BE CONTRACTOR CAN REMOVE THE EROSION & SEDIMENT CONTROL MEASURES. FINAL TIMING DETAILS ARE TO BE COORDINATED SCOUR AT STORMWA7ER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO UT RUNOFF CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8" CONTACTED. UPON COMPLETION OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE BETWEEN THE CONTRACTOR AND THE INSPECTOR FOR THE CONVERSION OF THE SEDIMENT BASINS TO PERMANENT SWM MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND THICK. THE DEPTH 70 THE WATER TABLE IS GENERALLY MORE THAN 80". FOR SITE MAINTENANCE. FACILITIES. NO ITEM SHALL BE REMOVED, THROUGHOUT ALL PHASES OF CONSTRUCTION, UNLESS THE UPSTREAM AREAS ARE ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL 25B- DYKE SILT LOAM-2 TO 79 SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF STABILIZED AND THE INSPECTOR GIVES PRIOR PERMISSION. PIPES AND ENGINEERED CHANNEL SECTIONS. CLASSIFICATION. SURFACE LAYER IS TYPICALLY SILT LOAM AND ABOUT 0-8" THICK. 13. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80". CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE J.19 RIPRAP: 36D- HAYESVILLE LOAM-15 TO 25% SLOPES. SOIL /S WELL DRAINED WITH A HIGH RUNOFF VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. A PERMANENT EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-7" THICK. 14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL S17E STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80". STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESUL77NG FROM THE DISPOSITION OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE http://websoilsurvey.nres.usda.gov/appIWebSoilSurvey.aspx WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETA77VE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. GENERAL SLOPE (3:1 OR LESS) PER ACRE TOTAL LBS 331 TEMPORARY SEEDING. KENTUCKY 31 FESCUE 128 LBS. THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY RED TOP GRASS 2 LBS. SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION SEASONAL NURSE CROP 20 LBS. AND SEDIMENTA77ON BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO 150 LIES FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS TO REDUCE DAMAGE FROM SEASONAL NURSE CROP SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PR07EC77ON TO BARE SOILS EXPOSED DURING CONSTRUCTION UN77L PERMANENT FEBRUARY 16 THROUGH APRIL ANNUAL RYE VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE 332 PERMANENT STABILIZATION: NOVEMBER THROUGH FEBRUARY 15 WINTER RYE THE ESTABLISHMENT OF PERENNIAL VEGETA77VE COVER ON DISTURBED AREAS BY NOTES: PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL IS ECONOMICAL, ADAPTABLE TO S17E CONDITIONS AND ALLOWS SELECTION OF THE TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION RECEIVE A PERMANENT VEGETA7VE COVER. OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. 338 TREE PRESERVATION AND PROTECTION: PS PERMANENT SEEDING SCHEDULE PR07FCT70N OF DESIRABLE TREES FROM MECHANICAL OR 07HER INJURY DURING LAND J NO SCALE DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE 774E SURVIVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT CONTROL, (STD. & SPEC. 3.32 OF VIRGINIA EROSION & WATERSHED PROTECTION LANDSCAPE BEAUTIFICATION DUST AND POLLUTION CONTROL NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND IS SEDIMENT CONTROL HANDBOOK, 3RD ED.) BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN 7REE-INHABI7ED n AT/� n Source: Va. DSWC AREAS SUBJECT TO LAND DISTURBING ACTIVITIES. L7 ROSIOl\IinATTROL mTL7 S 339 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE K17H THE VESCH. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLAT7ON OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTA7ION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7.•ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL 77MES DURING LAND DISTURBING ACTIVITIES AND DURING S17E DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED. ES-B.-DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-9:7HE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRAC7CES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE-CONSTRUC770N CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES-4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE S17E AT ALL TIMES ES-5.-PRIOR TO COMMENCING LAND DISTURBING AC77W77ES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIM17ED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO 774E OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 1992 3.07 1992 STONE 70' MIN. CONSTRUCTION .• COURSE PAVEMENT cll t \-6" MIN. 21A AGGREGATE BASE PROFIL STONE CONSTRUCTION ACCESS � 2% 12% MIN. -ASPHALT PAVED WASHRACK 1 2% 12' MIN.' LID t-POSITIVE DRAINAGE -MUST EXTEND FULL WIDTH TO SEDIMENT OF INGRESS AND EGRESS OPERATION , TRAPPING DEVICE PLAN SECTION A -A EXISTING PAVFVFNT )RAINA'I TNT o v, A mutitmuu water tap of 1 inch must be installed with a mirEintun 1 itch ballcocic shutoff fah a supplying a wash hose with a diameter of 1.5 inches for adequate constant pressure. Wash water must be carried away from fire enhance to art approved settling area to remote sednuent. All se(6ruent shall be prevented from etiteriug stonu ufrauis, (htches or wate(eonlsee PAVED WASH RACK GRAVEL CURB INLET SEDIMENT FILTER GRAKL FILTER* IY RUNOFF WATEF WIRE MESH GILTEREO WATER IT I _ SWAM ill G e CONCRETE GUTTER I? �PCURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS rFHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE a1CONVENI3NCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. - GRAVEL SHALL BE WOT y3, A357 OR 5 COARSE AGGREGATE. Source: Va. DSWC Plate 3.07-2 Source: Va. DSWC Ill -36 m-41 1 SET POSTS AND EXCAVATE A 4"X4" 2 STAPLE WIRE FENCING TO NO SCALE 3.07 1992 3.11 Plate 3.07-6 Source: Va. DSWC TRENCH UPSLOPE ALONG THE LINE THE POSTS. J. ATTACH THE FILTER FABRIC TO OF POSTS THE WIRE FENCE AND EXTEND lT INTO THE TRENCH. FLO� III - 62 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. =III- EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 05- Plate 3.11-1 No. 35791 3/24/21 U) Z Z J O Q O a �_ U U m w vl � J z O H \ in z LUC ~ ce '4 N m mM 0 H 0 H z w E 0 O U z 7) 0 U w a 0 w w W N N N ~¢ rn 0) v rl 'i M LL W L9 z It Ul z ti M M N M I N O m N N LU \J U) W 0 Q U LU U) LU LU LL U) LU O O N z J a w ^J W I..L ^ 06 I..L LU / V 1 Q H� Q z LU Cf) Lu 2 z J z z LU O W w 1 Q z w (j' z LU J U) O W ILU of 0_ (r) 182154 SCALE N/A SHEET NO. 5 U. PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL 4" EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE Source: Va. DSWC SUPER SILT FENC� EFFEC 77 VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE SSF (WITH WIRE -BACK IMMEDIATELY. No SCALE woo_ / / / / / LIMITS OF DISTURBANCE APPROVED- / 000 i ROPERTY LIMITS (TYP.) / / _ - WITH WP0201900003 — W PROPOSED LIMIT DISTURBANCE (TYP.) / / — W /W - - - /CONTRACTOR SHALL INSTALL �y rr- / RAP/ DIVERSION ACROSS THE / =W / ` CONSTRUCTION ENTRANCE. /- PHASE I DRAINAGE AREA TO SEDIMENT x SF W w mom woo // TRAP A = 2.2o ACRES * o -/ \�� ' I � ' ' // / // / ' 1 ' \�PROPOSEDTEMP. RISER& -� / CONTRACTOR SHALL USE A PO ION OF THE XISTING EMERGENCY ' • / �- J000BARREL OUTFALL TO INLET \ ACCESS ROAD FOR THE PAVED CONSTRUCTION ENTRANCE. C s ` �` \ \ ) \ / / CONTRACTOR SHALL INSTALL WASH RACK AND ENSURE A' \ / MINIMUM 12'x7o'PAVEDAREA FOR THE CONSTRUCTION ENTRANCE. PROPOSED CONTRACTOR/ k` Now Q STAGING AREA x 22'x7o' MIN. W/_ — CULVERT TO WAS R CK '' SF BE REMOVED PROPOSED CONCRETE WASHOUT AREA '�• "° \ \ \ \ / / / ' SCOTT/R. Ct°LLINS'Z No. 35791 ,a pow 3/24/21c�R �`YIONei. EEC, DRAINAGE DIVIDE (TYP. LOCATION OF PORTA-POTTIES \ ��/ r / % // SOIL TYPE / ,��p / / z J \ v / il"✓ �/ / O a SE ROPOD18 DIVERSION. \ a / ° // \ \ �5B 1 1 H LOCATION OF'' _ - - 3e8 DID CONTRACTOR SHALL ENSURE \ / a r _ J / / / / / \ now ' / / / / is CY DUMPSTER \ POSITIVE SLOPE IS MAINTAINED.- I \\ / _ _ / � I (\ O V ry LIMITS OF DISTURBANCE APPROVED/ BERM SHALL BE STABILIZED AS / \ \ `', _ _ — — — / / / / / \ L FBI w m C A FIRST STEP IN DISTURBANCE - _ _ _ _ _ _ _ r \ o UCTION TRAFFIC SHALL \ / / WITH WP0201900003 / / ` _ _ ' R SITE ACCESS \ \ / / \ _ - _ - -_ i / ' / f \ z a / LOCATION OF ,__ a \-�' / I \ \ �P M� -_ � / _ ,�� ♦ � •, \\ \ �..� o r U FUELING AREA- - - / I \ a \\\ C - - - - _ t o e \ > m z F TS I \ / / / / THE FUELING TANK SHALLIE COMPLETELY SURROUNDED BY a / l I ` \ S¢'�E/' B� ' \ w C CULVERTTO / / \ \ & % / / / A z' DEEP, z' WIDE EARTHEN BERM WITH A HEAVY MIL \ a / / ° � M I BE REMOVED / / / / POLYETHYLENE LINING, OR BE PLACED IN AN IMPERVIOUS ` \ \ cSTR FF% j'n M I \ ' / / / / / OPEN -TOP DUMPSTER WITH A SIDE DOOR. THE PROPOSED , BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE EVENT OF \ a A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IS \ / — / / ` \\ \\ • \ I P - I P \ = w / / / / / 1095 LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. _ - EXISTING CUL-DE-SAC Lu � \ \ _ / TO BE REMOVED / / / / / / x N / �I rmin ® / � SANITARY E ' TO BE R OVED / LV woo ' / / / ° / // IPROPOSEDi8"DIVE RSION. CONTRACTOR SHALL ENSURE/ REGRADE SO THAT ROADSIDE / / / /' / a / / /r/ /POSITIVE SLOPE IS MAINTAINED./ DITCH OUTFALLS DIRECTLY // // / // / / TS BERM SHALL BE STABILIZED AS '- IP / , VIA OVERLAND FLOW TO �\ / / / / / / / ^`� / A FIRST STEP IN DISTURBANCE. / EDIMENT BASIN C / / y\ / / / � y` `' '4 c ( / � / / IP I % a REGRADE SO THAT ROADSIDE / / / / V / / DITCH OUTFALLS DIRECTLY / / / - - a a / / / TE PLLE L04 / i SOIL TYPE / / �' s PROPOSED STOCKPILE AREA TO BE a, VA / VIA OVERLAND FLOW TO / / / a / / pR\ TREET 25B / / / ✓ \, \ ENCOMPASSED BY SILT FENCE AT ALL TIMES / / // / / IP PRIVATES Q i SEDIMENT BASIN C / / / z7 - LOT a rn rn v —/ TS // / / DC _ / /s /_,� 15 / / — — / �' / / - - �`—_� / — LOT PHASE I DRAINAGE Lu SOIL TYPE / / / / / / 1 \ \ SF / / % \ / / - B / DID LENGTH=62 / / \ / / �/ - ' - / - - / / 16 AREA TO SEDIMENT ] / / 5� v / - v / / / / D.A.=z.z8 ac., TC=11 min., / _ \ \ \ / / / / / �/ ( I \ / _ I LOT \i �/ ' ` �_ _ r BASIN C=8.12ACRES / / /' C=o. Q2- 1cfs, / / /' / / - _ - I 2' /� - / 4S, -4 / v ------ / / / i LOT C7 / - 446- - / / ,( / / � v - / / / / _ J / J PHASE I DRAINAGE - / / / l / / / �1 I� �7 _ M / // / // \ \ AREA TO SEDIMENT // i ,/ / - // // ,� I Lob / � / PROPOSED STAL SAND, KEEP OftNG UT° SAF \ \ / / / / / // / \\ \ \ \ EXISTING TREELINE (TYP.) BASIN D = 6.05 ACRES — — ` . — — \ \ — / / ) LOT LOT // / I (�7 27 -- -- _ / PROPO / / / / / / ✓ / / / / / F I N _ —_ — _ __ F SED i8' DIVERSION. / - }a&-- BIVI --- — CONTRACTOR SHALL ENSURE / \ _ �' /��%'/ / �' / Sol LTYPE / % / \ \ TP �33- — / / / / LOT / LOT � Q _— — — — POSITIVE SLOPE IS MAINTAINED. / / / / / / n SOI L TYPE \ ^ / SOILS / `"� / / / / / / ' / / // '� 28 6D , M - e �� BERM SHALL BE STABILIZED AS / / / / I \ SF / LINE (TYP.)/ LIMITS OF DISTURBANCE APPROVED / / / / / / 3 �/ �/ 9 N J fi _wAFIRST STEP INDISTURBANCE. / / / I 8C3 \ / / - - / WITH WP0202900003. EXISTINGI LEASANTGREEN zo J PROPos�FDBAEFLES / /// ///� //� Qom ` /� LOT PHASEIDEVELOPMENT W O LOT .. \\ // zi uj DDLENGTH=632'%� / \ \\� J .A.-3.62 ac, Tc=12 min, J H� O /0'45, Qz=6.z Cf5 > I U) I f _ — — V _ \ / , I,✓� / / / .y� Lu W PROPOSED VDOT STD. CLASS AlAI — — -- / / / ' " 2°j ' • 31 ` / / / �► RIPRAP LINED OUTLET PROTECTION / / / — — — — \ — _ / / f / PROPOSED R DIVERSION. / / / / / / I l� / / /— _ _ _ _ / 'CONTRACTOR SHALL ENSURE / ///// / /I •. \\� ' ~ �+ • Z WITH FILTER FABRIC UNDERLAYMENT \ _ / / / / - / / (MIN L-8', W1=4.5', W2=12.5', D=6") p / / / / \ . ' — — _ _ / / / POSITIVE SLOPE ISMAINTAINED. / / / / // f LOT // / / zq \ y, m O Lu DID BERM SHALL BE STABILIZED AS / / // / /' �f \ AFIRST STEP INDIS� DISTURBANCE. -/ /// /IP \ // / �� • J LEVEL SPREADER 0 IP S ALL BE " / ( ' / / / / / I / / / / TEMPORARILY BLOCKED DURING CONSTRUCTION, F / �C / / I SF y / �" ` \ DIRECTING RUNOFF TO THE PRIMARY OUTFACE. / ' /�` / / / / — — — — _ • TP _ / I I I '�(7(�y.� ,/ S I L TY P E 9' , - �� gasv � � � • � Lu \�TEMP. BLOCKAGE SHALL BE REMOVED AT THE TIME _ — i / F THE TEMP. BASI N's REMOVAL. DOWNSTREAM /' / // / \-- —� 36D OK I II6ROP6SED SAFETY FENC, -''e; fCS s I \\���R� U PROPOSED OUTLET PROTECTION TO BE VDOT STD. / / / — — ' — / _ — — INSTALL SIGNS "WARNING��, j,� • • ,a ,. , " �(V�(,S Y — �' 1 ----'/ ' / QUICKSAND KEEP OUT.. , T "�, '•a,/C7 6 /` Z o� +� LASS Al RIPRAP WITH FILTER FABRIC � �' — _ � / _ � — — — / � � P. Q • _ XISTING 100' WPO BUFFER (TYP.). / W 1��// / i1NDERLAYMENT (L=8 jW1-3', Wz=g', D�) _ _ /— puj TING WETLANDS / ...� /' / / SA �� V I --I U) � V/ / — v J IL..i / SEE SHEET 18 FOR / PROPOSED FLATVDOTCL. Al RIPRAP LINED / — — I /'' MONO/ \ - ,,� ; Lu Lu — / OUTLET PROTECTION WITH FILTER FABRIC l \ OUTFALL DETAILS e ^� " FLOW DIRECTION ARROW (TYP.) \ /� �, Lu \ / UNDERLAYMENT (L=28', Wi= Wz=1z.T, D=18") / ' �\ .'S / LOT I —I STURBANCE (TYP. / / / OP \\ \ � / - PROPOSED LIMITS OF DISTURBANCE (TYP. \ \� \ `\ LOT 49 j z Lu SEE SHEETS 18 & 1g FOR _ // _ _ \ u) v ' v / 2ao '- - - - - - - LEVEL SPREADER DETAILS 1 j �/ \ - - - - - _ ` /\ \ ; \ 50 Q TREE CLEARING (TYP. S �O�L TYPE \ ` ` — — — \ ` — — EXISTING ioo-YR FLOODPLAIN PER i ♦ \ \ \\ \ � T —� — _ PROPOSED VDOT STD. CLASS Al \ \\ \ ' ' SF ' \ 2 i� — — — - _ — - HEC-RAS ANALYSIS PERFORMED \ I \ Lu � RIPRAP LINED OUTLET PROTECTION \ N 17 _�\ — — — _ , — `\ BY COLLINS ENGINEERING IN WITH FILTER FABRIC UNDERLAYMENT APRIL 203.9, SEE WPO 202900027) \ `(MIN. L-8', W1-4.5', W2=1z.5', D=6") \ I \ SOIL YP / / uj PROPERTY LIMIT5 (TYP.) \ / ✓ / \ J D \ \ O P I I \ \ EXISTING STREAM \ / r / \ ONST'RU ION OFF HE LEVE AD R'D' 1] / / / �� ff<n J \\ iANDITS OUTFALLSHALL OCCUR ATTHETIME V / ' / 1 ` \ — \ \ ✓ / _ — :OF THE REMOVAL OF SEDIMENT BASIN'D'. \ — — / \ / — \ C / ' \ \ _ _\ \ 2 — — _ \ \ / I O WEB{S CREE —PROPOSED LIMITS O EE CLEARING (TYP.) THE OPENING IN STIR. D-102 FOR THIS PIPE � — Z K — — \ \ ` \ \\ SHALL BE TEMPORARILY BLOCKED DURING (V HEESC PH E � GRAPHICvMCA // / vv v TP / ® � v I h� ' ��•� 160 7r ^ SEE SHEET A IFo SF roa I I I \ \ ----------_ \ \ \ I % I SOILTYPE \ \ \ \ OUTFALL DETAILS m I'T _ 17 —*iNE�r1} \\ \ \ \ \ \ \ m�pZ "'I I II I I \ JOB NO. x \ \ \ \' I III \ 182154 _�� L� — — — \ \ \ \ \ \ \ \ / — /OSE ioo-Y FLOODPLAIN / \ \ SCALE \ \ \ PER HEC-RAS ANALYSIS M�TCHt.I hIE -/ \ \ \ ERFORMED BY COLLINS \ \ \ ° - ENGINEERING IN APRIL zo19, SEE QO/ Oo --- - �I, / /- SE SHEE'� \ ' 9 7 SHEET NO. \ OO �60 0 \ 1 PO zo1 000z) 11 / / I I ddo 1 / SOILTYPE,/ / 7 w------------ B Soso soma 6 \ 1111111110 000 0 !` 100 00 RS�PRo o�E18a /// ' ! / / ;NOTE: NO CONSTRUCTION TRAFFIC SHALL Vol,- \ \ \ 1 / / USE CLING LANE FOR SITE ACCESS 00 TS 40* Lu Lu / / ' V A / / LLI : ��� / \ // Z \ / A / / V ♦ / 00 PHASE IDRAINAGE _ // \ AREA TO SEDIMENT S J BASIN C=8.izACRES / J / C�\NoQ�O\ycyz6 SCOTT/R. Ct�LLINS'Z No. 35791 ,a pow 3/24/21 40, N&IONAT. E�Ol V/ ZZ O a J ` a 0 u c' m C ,,A^A w (n f H` z ¢ - z .. � H / W `u rn rn v / / / / / 6�� �E / / / / / ✓ / PROPOSED SAFETY FENCE, SOIL TYPE \ (/ / INSTALL SIGNS "WARNING 76 / QUICK SAND, KEEP OUT" CSA r� , .- / \ PKA z 0', — -- \ RAINAGE DIVIDE (TYP.) I /' / / //� / / I ( / y� M LOW DIRECTION ARROW (TYP.) / N Z \ / M EXISTING M GED \ / STEEP SLOPE P) -----___ / PROPOSED 28" DIVERSION. / \ / C D Z CONTRACTOR SHALL ENSURE / ( / / SB O , / PROPOSED z8" DIVERS�D� — / Q \ / / \\, / / _� POSITIVE SLOPE IS MAINTAINED. D / / CONTRACTOR SHALL ENSURE / / C -�5ti J \ ` / / / ` / / / / / \ \ — — — J ��, / / / / BERM SHALL BE STABILIZED AS / / POSITIVE SLOPE IS MAINTAINED. / / / / N a / / / -� / / i /\ PROPOSED LIMITS OF DISTURBANCE (TYP.) / / / // A FIRST STEP IN DISTURBANCE./ / BERM SHALL BE STABILIZED AS-000 — \ S� / / / / / A FIRST STEP)N L�I�TURBANCE. — / / w Q J // f //// // DD — / > U) O TS TS / ----/ > � // // // // / // // // // �/ / J / SOIL TYPE / \ // B // PHASE I DRAINAGE i / ---- // // // // I /// /// / / i/ J ~� O AREATOSEDIMENT — EXISTING TREELINE (TYP.) / / / / / / / — (n BASIN B = 4.96 ACRES /— — — — _ / / / / / / / / / / LLJ w PROPOSED a8" CLEAN WATER / DIVERSION. CONTRACTOR / / / DC \ — — — / / / / / / / fin/ PROPOSED VDO TD. C S� AI R�PRA LINED — / — — — — — — — — — / / O < Lu / SHALL ENSURE POSITIVE SLOPE — — — — — / / / / / / / / / OUTLET PROTECTION WITH FILTER FABRIC / W / / / / IS MAINTAINED. BERM SHALL B / / ' — — _ — / / 'I / UNDERLAYMENT (L=8', Wi=3', Wz=g', D=i8") / / _ — / / / / / i / / / l J STABILIZED AS A FIRST STEP IN � / V / \ I�� C / ' /� / // / / / / // DISTURBANCE. / ' — — — — ' — — — — — _ /� ' S %�' _- / — —0 / / /�` F 1 Q LL Lu DDLENGTH=36g' / //// ---- i / —/ �� / �'/ // // / I D.A.=4.zo ac., Tc=iz min., / C, / / / / — _ — — — — PHASE _ _ _ — — i / / / / — / / / / (� 1 AREA TO SEDIMENT �° / / C=0.45, Qz=7.a cfs / / ' — — — — — = / / / / _ / / �� 016 // \ / / BASIN E= 4.53 ACRES — PROPOSED SAFETY FENCE, / � / / / / / / PROPOSEDVDOI STD. CLASS AI, / / / /' �� ' — — — — — INSTALL SIGNS "WARNING SA — / / / / /uj UJ RIPRAP LINED OUTLET PROTECTION / / / / � ' / �i .� ' \ // i ,' QUICK SAND, KEEP OUT / / / / / // /i '-' Z ppyOPERTY LIMITS (TYP.) WITH FILTER FABRIC UNDERLAYMEN / S / / /� / / _ — _ — , — — — — — _ — PROPOSED LIMITS OF DISTURBANCE (TYP. _ O (MIN. L=8', W1=4.5', Wz=aa. D_6") / / / / `' ' / i' _ / / / / / /� — — � Lu/ I —I DD LENGTH=475' / / — / // / / / / / / / / /'PROPOSED LIMITS OF TREE CLEARING (TYP. (L1L'� O *VOWD.A.=2.3o ac., TC-12 min., / — — , — — — SB / / C=o.45, Q2=3.93 Cfs/ — ciao— ^�e / / / / / /// J Lu r / / / TS C / / w w EXISTING PRESERVED �kOPO�ED SAFETY FENCE � / / / \ — — ' STEEP SLOPES (TYP.) INSTALL SIGNS "WARNING I --I QUICK SAND, KEEP OUT" SOILTYPE / �I " a3� — \\ — �'S� / / ^� l / --- Lu /\ / / / / 8C3 _ _ i ` ti a� / / _ XISTING ioo' WPO BUFFER (TYP.) \ r PROPOSED 18" DIVERSION. / — — / / / / / PROPOSED VDOT STD. I:LASS AI — — / ��' / \ — — — - / // / Q CONTRACTOR SHALL ENSURE / / / / WITH FILTER ER FA RIC UN PROTECTION ON / / / / V J / / / I / WITH FILTER FABRIC UNDERLAYMENT— \ / ' \ W a /POSITIVE SLOPE IS MAINTAINED. J / / i ' / (MIN. L=8', Wa=4.5, W2=22.5', D=6") \ , / / i // /flIf / BERM SHALL BE STABILIZED AS / / / / / / /, \' / PROPOSED VDOT STD. CLASS Al RIPRAP LINED ' ( / / / PROPOSED LIMITS OF DISTURBANCE (TYP.) _ _ Q W — J A FIRST STEP IN DISTPRBAN E. / / — / / �, / OUTLET PROTECTION WITH FILTER FABRIC \ DID / / / / / / — — — — / ; — \ — J— ` OP UNDERLAYMENT (L=8', W34, Wz=g', D=3.8") \ ' ) f n mac! ROPOSED LIMITS OF TREE CLEARING (TYP.) / A �V O PROPOSED VDOT STD. CLASS AlRIPRAP LINED / XISTING 100-YEAR FLOODPLAIN (TYP.) ' EiooU(/ / � XISTING ' WPO BUFFER TYP. / / / - / -' P - GRAPHIC 1 SCAT � \ �— J / / , / / � OUTLET PROTECTION WITH FILTER FABRIC OP UNDERLAYMENT(L=8',Wi=3',W2=g',D=i8") �woo 0100 000 A400 0 20 40 a / LEVEL SPREADER OUTFALL PIPE SHALL BE TEMPORARILY T � A 0000V ' BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFFTO / i \WOW/ PRIMARY OUTFACE. TEMP. BLOCKAGE SHALL BE REMOVED ATTHE TIME OFTHETEMP. BASIN's CONVERSION. / ) / / SEE SHEETSi7&igFOR / / \ / _ / / HEi8 FOR LEVEL SPREADER DETAILS J- J / / EXISTING STREA 4p SEE SET `\ \� SF OUTFACE DETAILS / / / / / SOILS LINE (TYP.) _ EXISTING ioo-YEAR/ 9 I V � l / �o / ( _ SOIL TYPE FLOODPLAIN (TYP.) / D — — — V — ROPOSED LIMITS OF DIST CE TYP.) / / / / / / OPOSED LIMITS OF TREE CLEARING TYP. _ _ , �>, \ \ (TYP.) / '� i/ — j, / / _ / / � � , � OP + / — — -EXISTING zoo-YR FLOODPLAIN PER, / / �7- -�\� PROPOSED FLAT VDOT CL. Al RIPRAP LINED / + ' HEC-RAS ANALYSIS PERFORMED OUTLET PROTECTION WITH FILTER FABRI — _ BY COLLINS ENGINEERING IN UNDERLAYMENT (L-25', Wi=6' W2=7.5' D-18") — J ® APRIL 2019, SEE WPO 201900027) / / / / ✓ — _ — — — — / / /, / j / / 0 w a � JOB NO. 182154 SCALE 111=401 SHEET NO. CONTRACT R SHALL USE A PO ION OF THE EXISTING EMERGENCY y ACCESS ROAD FOR THE PAVED CONSTRUCTION ENTRANCE. CE �, DC CONTRACTOR SHALL INSTALL A WASH RACK AND ENSURE A=_= - ., i s, - - \ j / // / Cu / MINIMUM iz'x7o' PAVED AREA FOR THE CONSTRUCTION ENTRANCE." z x / PROPOSED CONTRACTOR / STAGING AREA �x x r a / �\ \ PH SE 2'x70' MIN. W/ /^ WAS R CK \ J \ \ '� ,\ \ \ \ I // / / / ' ' Vl N PROPOSED CONCRETE / \ \ aj \ / / /%//// ` .w�. WASHOUT AREA p LOCATION OF N F PORTA-POTTIES / o - Ln o/ / / // i - - ' \ / \ /�/ice✓ �// z a F PROPOSED DIVERSION. - \ / ° / \ /> 1 1 H - *DDONTRACTOR SHALL ENSURE a r \ \ \_ I ' \ a i _ J / / / a dt w LOCATION OF- - 3e8 \ / , i / 2j /°I N POSITIVE SLOPE IS MAINTAINED. I \ \ 15 CY DUMPSTER BERM SHALL BESTABILIZED AS / \ \ - - _ - - �' i / \ \ L O m M O — — _ — — — _ — — — — i ' N LIMITS OF DISTURBANCE APPROVED/ / A FIRST STEP IN DISTURBANCE a / \ - - - / ' \ \ o u UCTION TRAFFIC SHALL WITH WP0201900003 / l \ \ \ / _ I �Il R SITE ACCESS \ / / / LOCATION OF _ a \ - - ` \ �P - ' f \ \ o 1-- p z ` ui z FUELING AREA - O THE FUELING TANK SHALLIE COMPLETELY SURROUNDED BY > v 5 p u A z' DEEP, z' WIDE EARTHEN BERM WITH A HEAVY MIL \ \ a / / l\ \\ / �7Cs RFF\�` / I /` W H a POLYETHYLENE LINING, OR BE PLACED IN AN IMPERVIOUS \ ` - _ _ - - _ /' l �� \ \ \ TRFFT %-�,T / / \ ce p / OPEN -TOP DUMPSTER WITH A SIDE DOOR. THE PROPOSED / / \ \ \ O Ln Q) / / / I BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE EVENT OF / / \ / w / I / A SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IS \ \ ,( SLOPES GREATER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE \ \ I V w io95 LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. \ r MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF / I P \ � \ \ 6o LES. PER ACRE, OR 1 LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE. J SF \ % > • . O LU LLI - - -' / / DRAINAGE DIVIDE (TYP.)" - LV - -- / / / - / / / PROP SEDIt$ DIVERSION. / / Ln p / / / / / CONTRACTOR SHALL ENSURE / / �' / ysj, > POSITIVE SLOPE IS MAINTAINED. IP TS ' BERM SHALL BE STABILIZED AS/ A F RST STEP IN DISTURBANCE. / IP— 4Q 0) 0) n-i L04PROPOSED STOCKPILE AREA TO BE / \ ENCOMPASSED BY SILT FENCE AT ALL TIMES / // /� IP z7PRIVATESTREE / TS ' / \ / I DC _ _ - - - Los - - - - -/ ' / / / \ --�- PHASE II DRAINAGEL9 PHASE II DRAINAGE - - - / / / / / / \ \ SF AREA TO SEDIMENT / / - - - _ _ '--� — } LOT AREATOSEDIMENT // // // / \ \\ BASIN D=6.z4ACRES d) BASIN C = io.95 ACRES- / - - O-446-/ � --- --- MDC PHASE / ( POSEDSAFETY � FENCE, - - / \ \ / / / - - / / / - 7 / . • z6 I / / \ _ - Z ' INSTALL SIGNS "WARNING SAF /' / // - / \ \ \ \ \ / / / / / / /� i / E II - / - / / / 7 �, / I // / QUICK SAND, KEEP OUT" / \ _ _ - - - - / / / - / Q / / / --- - - / / I \ - / / / / / p // / LOT I LOT M 27FTI `... -PROPOSED i8" DIVERSION. / / \ / / / / / ✓ /' / / F / ' / / ^ I Z J _ _ \ ��- ^^ CONTRACTOR SHALL ENSURE � / // / //// / N I.L \ LOT CD Q POSITIVE SLOPE IS MAINTAINED. / / ' / ^ \ TP � / ' i i /^� a a BERM SHALL BE STABILIZED AS / / / / / I - \ SF ' / / ' / (Z/� \ - z8 / / / / / ig � I..L J / / LIMITS OF DISTURBANCE APPROVED / � / / / '. - - / / N a A FIRST STEP IN DISTURBANCE. / / / �� \ \ ' WITH WPOzoi 0000 . ' / / / / / •' ��� EXISTING PLEASANT GREEN W J PROPOSED / �PHASE I DEVELOPMENT Q BAFFLES > V 1 LLI LOO // � // \\\\ � // J O LOT -��� / zz V A / '/ U s / / LOT v a� W W PROPOSED VDOT STD. CLASS Al— — — -- / / / / / 2. ' • I 3 / / z \ / - _ / f / ROPOSED28' DIVERSION. i / 3 In z RIPRAP OUTLET % - / 'CONTRACTOR SHALL ENSURE / / / V ' — WITH FILTER FABRIC UNDERLAYMENT � \ — — _ _ i / / � / �� � �\ LOT � / / \ L�y � - (MIN L-8', Wz=y. Wz=zz. D=6") ' / / w - - _ _ - / / POSITIVE SLOPE ISMAINTAINED. / / // / z m O LLI 5, 5', �-30 / / / / ° ERM SHALL BE STABILIZED A5 / W / i� f \ 3 A FIR5T STEP IN DISTURBANCE. LEVEL SPREADER 0 IP S ALL BE - / i - _ F -_ � -�-� � �� / DC � SF � / �✓� Q � TEMPORARILY BLOCKED DURING CONSTRUCTION, ui DIRECTING RUNOFF TO THE PRIMARY OUTFACE. /' ��' // /' TP I (� - - — — — — I I9,p c _ TEMP. BLOCKAGE SHALL BE REMOVED ATTHE TIME _ - i / /��S / / / ' PROPdSED SA TY FENC $�fC "e>; \ I / �CG'S U ' v, FTHE TEMP. BASIN's REMOVAL. DOWNSTREAM / / / \_- 6K I S �i s VV``�� R16 PROPOSED OUTLET PROTECTION TO BE VDOTSTD. - - / /--' -- - __ / JINSTALLSIGNS"WARNING /(V�(,5 0 ---- / / - - _ / QUICK SAND KEEP OUT" °" Fj•. �, _ LASS Al RIPRAP WITH FILTER FABRIC 1 - �' - _ - - - - - - i = / / - - - / \ ' ♦< P P� LJJ Z XISTING ioo' WPO BUFFER (TYP.). / / i1NDERLAYMENT (L=8', Wz=3', Wz=g', D=z8") - - - Lu // - TING WETLANDS ��' V - 11 ^�/ --- OIL / ✓" / / I �\ \ , b OPOSED VD 56. CLASS AI o F L T V / - SEE SHEET 18 FOR / PR POSED FLAT VDOT CL. Al RIPRAP LINED / y - - -� I / �\ \ RIPRAP LINED OUTLET PROTECTION LLI LLI — OUTLET PROTECTION WITH FILTER FABRIC l _ i WITH FILTER FABRIC UNDERLAYMENT LLI OUTFACE DETAILS • ^ FLOW DIRECTION ARROW (TYP.) \ /� , / (Y F I UNDERLAYMENT (L=z8', W1= Wz=iz.7', D=18") // \; / - \ / r \ ® \ - \ \\ ( 4 5', ) �,• LOT / \ \ / i MIN L=8, Wi Wz-az D 6 STURBANCE (TYP. - -' / / OP \\ \� - ' i / PROPOSED LIMITS OF DISTURBANCE (TYP. \ \� \ \ \ \ LQT 49 W SEE SHEETS 18 & ig FOR _ / _ _ '- - - - - - - LEVEL SPREADER DETAILS 1 j - \ - - - - - - ` / \ \ \ 50 TREE CLEARING (TYP. s / , \ _ _ - --- ` - _ EXISTING ioo-YR FLOODPLAIN PER i ♦ \ \\ \ �� I ' ^ Q _ - - _ -- _ PROPOSED VDOT STD. CLASS AI \ \ \ `:. \ V J T `\ HEC-RAS ANALYSIS PERFORMED RIPRAP LINED OUTLET PROTECTION \ \ SF I \Lu1 BY COLLINS ENGINEERING IN WITH FILTER FABRIC UNDERLAYMENT - - - - APRIL zoig, SEE WPO 202900027) `(MIN. L-8', W1=4.5', W2=12.5', D=6) \ , \ ( \ / Lu \ -PROPERTY LIMITS (TYP.) \ / ✓ J ♦ \ O EXISTING STREAM \ - / r \ / - \ONSIRU ION OFTHE LEVE AD R'D' / / // / a J rAND ITS OUTFALL SHALL OCCUR AT THE TIME / / / �/ / _. (D \ \ ✓L-po/ -:OF THE REMOVAL OF SEDIMENT BASIN'D'. / O I..L - - - / / \ \ \ W��lS CR - PROP OSED LIMITS O EE CLEARING (TYP.) ` THE OPENING IN STR. D-ioz FOR THIS PIPE - / / C ) \ / / \ _ Z z I EEK - - \ \ \ \\ SHALL BE TEMPORARILY BLOCKED DURING - N HEES PH E �- V 1 / --- - TP _ - -GRAPHIC MCvo ozo +s\ ' v \�I sa4o ri �\ \ _--` l SEESHEETAF O.� I I 1 \ 0 _ /---------- \ — — OUTFALLDE_TAILS m� I'T I 1 SOILTYPE -- -----�tx }17 JOB NO. -FiTc -= as rt 182154 - - - - - OP SE too-Y FL06 PLAIN \/ PER HEC-RAS ANALYSIS SCALE MATC H I hJ E - / ERFORMED BY COLLINS Oopo� o Oo 1' =40' ` ENGINEERING IN APRIL 2019, SEE Oo �Oo r �Ej i,LLCS H E E'� .L Oo Cod' ojnC,o \ I \ I PO zoig000z7) OO / I \ \ SHEET NO. 11 1 ddo lol �( 8 w w - //\CROPO I DC / I WIN r fAft \ / / i��— 100 ❑ s / / 00 / ftft 1 ft mom SCOTT/R. Ct•LLINS'Z No. 35791 ,a pow 3/24/21) �`SIOMei. E�Gl /100 1 / 100 e ' u Z NOTE: NO CONSTRUCTION TRAFFIC SHALL u USE CLING LANE FOR SITE ACCESS '' / / ❑ \ / ,HA /♦ / \ \ — — �/ V/ o J f F Lu u Lu 1010 Lu 00 � U ' PHASE II DRAINAGE AREA TO SEDIMENT //� // \ \ / \/ // \ \ / // ' // / / // ❑ / BASIN C=io.95ACRES R0PO1�RERS / ❑ \ / // /\ / / / / /' /' / DC Lu o r4 rn rn v � ti ti m / ♦ / \ / / // / EyJS�S"(PjR / ' / / / / S d� ROPOSED SAFETY FENCE, INSTALL SIGNS "WARNING QUICK SAND, KEEP OUT" S Lu ` // // / / lam RAINAGE DIVIDE (TYP.) LOW DIRECTION ARROW (TYP.) N L / E STINGM GED // / / / \ / // V /'� / / //'/ / / -� A I \ / STEEP SLOPES YP.) / //' ❑ ) / / / / / / ^J CD PROPOSED LIMITS OFDISTURBANCE (TYP.) N -1 f -- \ / / ' /I / / _ / / / / / / ✓ / / / /� i / - - / TS _ SLOPES GREATER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE / / TS / / / / / /' // / / / / - - / / / W MIX WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF / / / / / / J Z PHASE II DRAINAGE ---- /j now 6o LBS. PER ACRE, OR 1 LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE. / / / / ` / / / / / j / J H1 O AREA TO SEDIMENT / — — — — — / w > ~� BASIN B = 4.g6 ACRES / _ — — w U PHASE II DRAINAGE / / / / / ' / / / / W / \�\ \ PROPOSED 28" CLEAN WATER �= /'— —�---' // AREA TO SEDIMENT ' DIVERSION. CONTRACTOR / /' / _ _ _ _ /' _ BASIN E = 4.03 ACRES / / -- /' / W PROPOSED VDO TD. C SS AI RIPRA LINED .SHALL ENSURE POSITIVE SLOPE - - - - - �' ' / OUTLET PROTECTION WITH FILTER FABRIC . / W IS MAINTAINED. BERM SHALL B UNDERLAYMENT (L=8', Wi=3', Wz=g', D=18') / STABILIZED AS A FIRST STEP IN / / -� _ ---' -/ � -- %%�-'_ _ - _� / \ DISTURBANCE. / ' / ' - - - �' �� - / < Lu //// _-_-- -� / _ r // / k / �' �/ / / C) - Y /i /' / / / /' / S / / / / --- �_ �� -/ 1 Old PROPOS SAFET NCE, / / / � ' �� /'/ / / / / / / PROPOSEDVDor�s❑LASSAI,/ / / /' ---- --/ INSTALL SIGNS "WA RNIN - // / / DDT'/ /' ' / / /---_.�' �' W w Z / \ LINED/ / / / - - QUICK SAND, KEEP OU - / / / / / / ' / O ppyOPOUTLET PROTECTION ERTY LIMITS (TYP.) WITH FILTER FABRIC UNDERLAYMEN S / / i � / — _ — , — — — �,❑ / / / / / / / / PROPOSED LIMITS OF DISTURBANCE (TYP. (MIN. L=8', Wi=y.S', Wz=aa. D_6�.) � / / / / / _ _ i ' / ' /' — i / — — i / / / / / / / / / / / �!— — — — — — — ��// V / �/ \ /' / / / _ /' / PROPOSED LIMITS OF TREE CLEARING (TYP.ul L_L SB/ / // / T/P / // / / // JI 0 EXISTING PRESERVED SROPOSED SAFETY FENCE, / / / / - Lu STEEP SLOPES (TYP.) INSTALL SIGNS "WARNING SAF / / / /' / / / T�z' \� / / / / 'SF / / %- / I --I QUICKSAND, KEEP OUT" / / / /'� DC / / �/ / -' - /' ' - , ; -��n- - - / / / / - Z Lu \ ` � / XISTING ioo' WPO BUFFER (TYP.) \ r \\ / / a U) PROPOSED VDOT STD. CLASSAI - - _ / / �`(�' \ - - - 1 /' /� Q RIPRAP LINED OUTLET PROTECTION / \ / - -- J Lu J WITH FILTER FABRIC UNDERLAYMENT— \ ^+ \ / lh / / / / �_%/� / (MIN. L=8', WI=4.S; W2=12.5', D=6") -�� / / / I / / ''� /I PROPOSED LIMITS OF DISTURBANCE (TYP.) _ — \/ / PROPOSED VDOT STD. CLASS Al RIPRAP LINED \ / / w OUTLETPROTECTION (O8; WIi 3, W2 9'TH FILTER FDBR IC 0P U8") j' ) mj a ROPOSED LIMITS OF TREE CLEARING (TYP.) A �V O / B / �/ �_ PROPOSED VDOT STD. CLASS AlRIPRAP LINED / XISTING moo -YEAR FLOODPLAIN (TYP.) / �` � GRAPHICS SCAL� N EXISTING ioo' WPO BUFFER (TYP. / / : / / ' OUTLET PROTECTION WITH FILTER FABRIC J A - / A❑V / / ' // / /' / / DP UNDERLAYMENT (L=8',Wi=3',Wz=9',D=i8") �z� \40 0 20 40 so /// /ISO LEVEL SPREAbER OUTFALL PIPE SHALL BE TEMPORARILY T \ o / - BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFF TO ' Y, TP / THE PRIMARY OUTFALL. TEMP. BLOCKAGE SHALL BE REMOVED / / 952- _ _ ._ , \ / AT THE TIME OF THE TEMP. BASIN'sCONVERSION. / SEE SHEETS 17 & ig FOR / / / ' \ / ( , / / / w � — — — — . /' � / SEE SHEET i8 FOR J LEVEL SPREADER DETAILS EXISTING STREA y • l 40 / // / / �/ _ SF OUTFALL DETAILS JOB NO. EXISTING ioo-YEAR/ 182154 FLOODPLAIN (TYP.) l✓ D — — — �\ V — _ — / i / / / / / / _ — — / / '' ' / — OPOSED LIMITS OF TREE CLEARING TYP. / / / ROPOSED LIMITS OF DIST CE (TYP.) (TYP.) / -s� /' / /� QP + /---E�STINGioo-YRFLOODPLAINPER _ 1"-4�' PROPOSED FLAT VDOT CL. Al RIPRAP LINED / + ' HEC-RAS ANALYSIS PERFORMED - / OUTLET PROTECTION WITH FILTER FABRI - BYCOLLINS ENGINEERING IN / - _ - �' / / / SHEET NO. /� �' / / /' UNDERLAYMENT (L=15', Wi=6' W2=7.5' D-18") — J ® APRIL 2019, SEE WPO 201900027) / /' 1 IN \ � 1 I ` I \ / I - 00 i ♦ / ` _I / / ♦ \ / / / RP1PRooJ�18e /// ♦ ♦ ♦ - �SCOTT/R. CbI,LINSZ u No. 35791 a 3/24/21 R �Ss10IVAT. '. N 00 I � M I � I Q r i Z i W I � 0 r �I I Z O V la Lu oci� ♦ / / IP a 100 - PHASE III DRAINAGE 'f- / /' AREAT EDIMENT ~ rn rn v £ / / / O 5 J OS a N N r BASIN C = g.66 ACRES o DROP ` V �/' �%— i \ ' � // / / 75 / �, c R POSEDSA E YENCE i O/ ` / 4. 5 / / / INSTALL SIGNS"WARNING Lu RAINAGE DIVIDE (TYP.) (7 LOW DIRECTION ARROW (TYP.) /04 ' \XISTINGM AGED /// / �// / / /// \ O /� o / / // / — AA STEEP SLOPESV(TYP.) // / / \\ PHASE III DRAINAGE 1 / I� --- �1 / ���' // ' / /' _-- AREA TO SEDIMENT / ' / / ' r. M Ip P -�' g CD Q // / a BASINB=7.83ACRES ' 6� / I / / M / 5 / / W J PROPOSED LIMITS OF DISTURBANCE (TYP.) / / / / I J / — J / v / / / _ — _ ___ _ __ _ / ✓ ` / / _ V / / 0, 758 , yS ',. M� r / .: 5 / �j j56/ ® > U / if 734 w PROPOSED VDO STD. C SS Al RIPRAPLINED ' \ / / / 1 — — — _ . ` •.: M . t'. ::. , • - / / / / / / / 7 j3 / / _ CC OUTLET PROTECTION WITH FILTER FABRIC .' / / — " i �• 156 / / / / '/ O G / UNDERLAYMENT (L=8', W14, Wz=g', D=i8") / / / / S PES GREATER THAN 3:m ALL BE PLANTED WITH NATIVE STEEP SLOPE WITH ANNUAL RYEGRASS B RNST CONSERVATION SEEDS AT A RATE OF . w • , / / _ 1 5 .. /� 0 6o LBS. PER ACRE, OR m LB PER i oo SF, UNLESS SPECIFIED ISE. — 13 / � ' /�` F ,1 \ Q 0— Lu M _•;•J-' PHASE III DRAINAGE / / / / /! / / / / m AREA TO SEDIMENT i /�- i - /' / �\ C TRAP E = o.8i ACRES / ` / 13k / - V ' 06 / / r M �` IP ✓ , M — 15 — — - �.74 / / PROPOSED VDOI ST�LASS Al / / / / .-. , — — ' / — —744— — -- — i —.. / �' /. / — — '\� �_ W RIPRAP LINED OUTLET PROTECTION / / *' 6 M / PROP SED SAFETY NCE; 1"'--_ / PROPOSED LIMITS OF DISTURBANCE (TYP.)' LU O OPERTY LIMITS (TYP) WITH FILTER FABRIC UNDERLAYMEN S - - - -- _ uj — / (MIN. L=8', Wi / s vx — l i� 6'' — — INSTALL SIGNS "WARNING S 1 0 / / _ — -- - — / / / / �.. 15 — — QUICK SAND, O - \ ul — / ' PROPOSED LIMITS OF TREE CLEARING (TYP. 0 Lu EXISTING PRESERVED *4PkOPo\SEDSAFETY FENCE, STEEP SLOPES (TYP.) INSTALL SIGNS "WARNING SAF / ♦ 154 r i / �. \ // OUICKSAND,K/EEPOUT" // / /'1 / /.:�,'' // — / " /1 14z1e.( — � — 1'hk / �. -./ // f/ ----- U) Ll.l I �/ 54 / .XIS—TING ioo_' WPO BUFFER (TYP.) J a U) A —PROPOSED . CLAS /1Q/ RIPRAP LINED OUTLET PROTECTION --- WITH FILTER FABRIC UNDERLAYMENT—W I (MIN. L 8', Wa=4.5, W2=12.5, D 6) PROPOSED VDOT STD. CLASS Al RIPRAP LINED PROPOSED LIMITS OFDISTURBANCE(/ OUTLET PROTECTION WITH FILTER FABRIC e TYP.) � )1 \ ti w Q 1 UN DERLAYMENT (L 8, Wi 3, Wa g', D i8') ) I ) fn J PROPOSED ROCK WEIR OUTFALL l \ 1 I ��! ROPOSEDLIMIT \OFTREE CLEARING (TYP.) �\ \ J \ O XISTING moo -YEAR FLOODPLAIN TYP. / ' N / \ _ -,,PROPOSED (TYP.) (s''RAP _c SCA F.� ( _ _ _ _ OUTLET PROTECTION WITH FILTER FABRIC J _ ) ' EXISTING moo' WPO BUFFER TYP. / \ — — / — \ 1 - J' Op UNDERLAYMENT (L 8', Wm=3', Wz=g', D=mB") ao o zo �'ao I Leo /'/ /166 LEVELSPREADER OUTFALLPIPE SHALL BETEMPORARIL)` T / --i AEW BLOCKED DURING CONSTRUCTION, DIRECTING RUNOFFTO / \ / / / — / r. \— TIP / THE PRIMARY OUTFALL. TEMP. BLOCKAGE SHALL BE REMOVED / ' — IN FE// — — — — — — c _ — — / _ \\ � — � AT THE TIME OF THE TEMP. / SEESHEETSm &1 FOR / — _ �SF / i' SEE SHEET m8 FOR — — / — — — EXISTING STREAM — — 1 igeh r 40 / / / / / �' �sz _ \ _ / / - ' 7 9 / / \ i � � _ ' i LEVEL SPREADER DETAILS :OUTFACE DETAILS - JOB I � � - � / NO. EXISTINGmoo-YEAR/ �) \— // �/� �82�J�4 FLOODPLAIN TYP. // D — . \ _ — ' / _ I__ / / — —/ / / / �f/ / _ ( ) f < \ OPOSED LIMITS OF TREE CLEARING (TYP.) PROPOSED LIMITS OF DIST CE (TYP.)— — — — — — _ _ / ✓ _ — , \ \ / / —.��/;�// �/ SCALE PROPOSED FLAT VDOT CL. Al RIPRAP LIN6_ _ \ / �. OUTLET PROTECTION WITH FILTER FABRI J / /.. '� _ — / SHEET NO. /C j % / � / i j;/ /' i UNDERLAYMENT (L=m5', Wi 6', Wz=7.5' D-18"1 / \ IP , NNO O CL NCANS IF CTIO ACCESSC SHALL U% o JIP Z Z O d J k u r d O u d' m C c w (n J r r H z O ¢ r - u (n z .. H Wof u SEDIMENT BASIN'C' DETAIL --- // ,' SEDIMENT BASIN'D' DETAIL /I a ,( TH SCALE: 1"=20' / / / v v - q� / - / /' SCALE: 1"=20' / TEMPORARY 048" CMP RISER WITH A RIM ELEVATION OF 725.50'. RISER TO INCLUDE TRASH RACK & A TEMPORARY 06" DEWATERING ORIFICE (INVERT ELEVATION OF 721.96').\ / / i \ \ \ \ \ \ \ _ y / �` -` -4- �y �_ +�/� SCOTT R. LINS'Z ONCE THE SITE IS STABILIZED AND THE ESC INSPECTOR HAS APPROVED THE CONVERSION \ \ PROPOSED SAFETY' FENCE, b U No. 35791 a OF THE TEMPORARY FACILITY TO A PERMANENT SWM FACILITY, THE CONTRACTOR SHALL \ \ \ INSTALL SIGNS "WARNING / \ \ \ \ \ p vo `� �` : 1.0 3/24/21 c�R REMOVE THE TEMPORARY RISER AND TEMPORARY DOWNSTREAM CMP BARREL \ \ - - -QUICK SAND KEEP OUT" �o - - - - DISCHARGING INTO PERMANENT STIR. C-102 & INSTALL THE UNDERGROUND DETENTION - , \ \ \ > if ��gs ZyG1 / TONAL SYSTEM. SEE SWM PLAN FOR ADDITIONAL PERMANENT SWM FACILITY DETAILS.LLI E 98 Off Lu 14 (7 742 / / / N _ / /\ \ \ p z 732 73 4 \ \ - / \ \ \ \ PROPOSED SAFE N , : • \/ 73 ,�3�5 + ` J �/\ ° INSTALL SIGNS "WARNING ///�//\ v� '' a / - _ \ \ �1 \ \ \ \ \ \ / QUICK SAND, KEEP OUT" \/%�j/ > 00 724 / _- -_---- ---- - \G\ J\\\ \\\\ \\ \\ /_ / / //%\ U) o 'PROPOSED WOODEN B k ♦ / \ \ \ \�\ \ \/\/ a / _7? -719- - TOP ELEV. =726.00 \\/\ z \ pry/ \ \ so, \ \ \ \ \ \ \ ' i /// Z o a F- - \ / \ H W w � \),�2 NO N \\\ \ \ \\\ \ O (ctf U Go n En � CA TEMPORARY CMP RISER - BE SET IN A PROPOSED 20' WIDE VDOT CL. AI RI AP LINED ♦ \\ \ p , o r Lu z 2: , 126 _ _ FOUNDATION MEETING MIN MUM VESCH - - - _ _ _ - - - FILTER FABRIC UNDERLAYMENT (STONE '; o �9S\ \ \\ Vs \ V A\ ° A > O z o oU EMERGENCY SPILLWAY w/ 4:1 SIDE SLOPES & SPECIFICATION 3.34 REQUIREMENTS. \ ° W 0 w DEPTH-18 ). SPILLWAY CREST ELEV.=700.75. a ce W w J uT P O OSED 10 DE TOP F AM / / / / �/ \ >o \ \ \ 1 \ B o > / a� EXISTING too-YR FLOODPLAIN PER o \ \ \ / V w TOP OF DAM ELEVATION=728.0'. / / p - - - - - >o o \ \ cr - HEC-RAS ANALYSIS PERFORMED BY / \ \ \ \ I / / 719 / � � COLLINS ENGINEERING IN APRIL 2019, 48.00 LF OF 18" CMP Cal o.5o%TO SERVE AS THE TEMPORARY RISER _ _ - SEE WPO 201900027) WPO EAM_/ ♦ \ \ \ \ J I O OUTFALL. TEMP. PIPE OUTFALL TO DISCHARGE INTO PERMANENT X 724 / STIR. C-1o2. TEMP CMP INVERT IN=719.75, INVER OUT=719.51) \ BUFFERJ , TYP. \ S p 0 / 72 STR C-102 \ \ \ p ° ° / \ Lu STR C-107 (8" HOPE). THE OPENING FOR THE 8HDPE SHALL BE PROPOSED 10' WIDE TOP " \ / \ \ , I I o � OF�� I - - TEMPORARILY BLOCKED WITHIN THE MH TO PREVENT RUNOFF FROM CONSTRUCTION OFT LE EL SrP EADER'D' W \ ELEVATION=7oz.o'+ 8 \ U) ENTERING THE LEVEL SPREADER & VEGETATED FILTER STRIP. TEMPORARY \ \ - _ j / , \\ \ AND ITS OUTFALL SHALL OCCUR AT THE TIME w BLOCKING SHALL BE REMOVED AT THE TIME SB C IS REMOVED. \ \ / \\ \ OFTHE REMOVAL OF SEDIMENT BASIN'D'. " \ \ THE OPENING IN STIR. D-102 FOR THIS PIPE SHALL BE TEMPORARILY BLOCKED DURING / \ \ PROPOSED VDOT STD. CLASS At RIPRAP LINED TEMPORARY 018" CM BARREL REL � ' \ - _ \ + , \ T E E C PHASES. - . 1 / \ \ OUTLET PROTECTION WITH FILTER FABRIC TO PERMANENT ST C-1O2 \ \ - / - - / W N N . _ v UNDERLAYMENT (L=8', W1=3', Wz=9', D=18") x �x \ A VDOT STD. E (CONCRET MANHOLE BASE WITH A 048") SHALL SERVE AS THE RISER's y ' \ \ Q \ LOWER SECTION. A 048" STA PIPE WITH A RIM ELEVATION OF 699.75' SHALL COMPLETE 3 \ QJ p o 1711 m PROPOSED35'WIDE✓DOTCL.AI /� �� / / 72 \ "'� STRC\ STRC-104 + \ THE STRUCTURE. RISER 0 INCLUDE A TEMPORARY TRASHRACK & A TEMPORARY 05" \ \ \ \ RIPRAP LINED EMERGENCY SPILLWAY DEWATERING ORIFICE (INVERT EL TION OF 697.76'). ONCE THE SITE IS STABILIZED AND THE \ p w/ 4:1 SIDE SLOPES &FILTER FABRIC, ESC INSPECTOR HAS APPR D THE CONVERSION OF THE TEMPORARY FACILITY TO A / UNDERLAYMENT (STONE DEPTH=18" ). / / / / \ \ - - - +/ PERMANENT SWM FACILITY, THE CON CTOR SHALL CONVERTTHE RISER TO A PERMANENT 'I SPILLWAY CREST ELEV.=726.5o'. / / / - x ,.''' . " \ \ / MH STRUCTURE. SEE SWM PLAN FOR ADDITIO ERMANENT MH DESIGN DETAILS (STIRD-1oz). 02 \ \L9 + �� PROPERTY LINE TYP. \\ / 98 i� \ 4- T\ WPO STREAM BUFFER, TYP. - _ - r / �� \ \ 3 f goo A\ o ° yP (yi b I + / \ \ , / \ PR POSED ioo-YR F 00 PLAIN PER HEC 1 04 z / - \ \ S \ ANALYSIS PERFORMED BY COLLINS ENGINEERING IN, , � PROPOSED FLAT LEVEL SPREADER x _ 'C'.SEE SHEETS 18 & 19 FOR DETAILS / / \ \ \ TRcIo - ` + Z' / r7 \APRIL 2019, SEE WPO 201900027) \ - M� / �20 +\ s PROPOSED' MIATCHLINE - \ \ , J VDOT STD. EW-1 V \ p ' CV CL +� / x x \----- �� + \ SEE SHEETS \ \ W rn 01- / EXISTING�ioo-YR FL06DPLAIN PER // \ \ - - - - - i + - - / / Oi �O O \\ \ / ° N J HEC-RAS ANALYSIS PERFORMED / / / _ - - - - - / 618 & 10 O 1 \ p \ I -I / - BY COLLINS ENGINEERING IN - - _ \ Y - APRIL 2o1g, SEE WPO zol9oo027. - - _ I�II� I�,I III II I��III III\I \ W Q cn NOTE: SEE SHEETS 14-2oFOR DESIGN INFORMATION AND PROFILES / I STR D-104 Q I �O 11 W OF THE BASIN OUTFALL SYSTEM AND LEVEL SPREADER. PROPOSED FLAT VDOT CL. I RIPRAP o O W Q LINED OUTLET PROTECTI N+fH + FILTER FABRIC UNDERLAY + \ I OTE: SEE SHEETS 14-2oFOR DESIGN INFORMATION AND PROFILE 1 J J (L=28', W1=4.5', Wz=1z.7', D=18") A OF THE BASIN OUTFALL SYSTEM AND LEVEL SPREADER. � J V � v A 1 P OPOSED FLAT VDOT CL. At RIPRAP LINED _ 1 > C)- _ _ _ _ / \ OUTLET PROTECTION WITH FILTER FABRIC \ U) w / \ \ UNDERLAYMENT (MIN. L=9', W1=6', W2=6', D=18") W /� i \ \ POWELLS CREEK \ \ * in �J 1 Z Sediment Basin 'C' Design MINTTWISP WA' 3' WITHOUT drainage area (acres) 10.95 DESIGN HIGH WATER basin volumes: (using 2' contour intervals) (25-WL STORM °") elevation (ft) contour area (sf) volume (cy) O.Dr 719.00 5625.0 0 MIN 10 720.00 6329.0 221.2 • ' 722.00 7624.0 744.4 D , s oRACE 724.00 9452.0 1383.4 • WET • STOROGE 726.00 11212.0 2147.8 728.00 13078.0 3046.5 SEMIENT CLEANOUr POINT ('WET' (' WET VOWE REDUCED C.Y./ TO }e C.Y./ ACRE) wet storage: wet storage required (cy) (67*DA) 733.7 design high water (ft) dewatering orifice elevation (ft) 721.96 top of dam (ft) wet storage provided at this elevation (cy) 733.7 top width of dam (ft) available volume before cleanout (cy) (34*DA) 366.8 bottom of basin (ft) cleanout elevation (ft) 720.56 approx. bottom dimensions: distance from cleanout to orifice (ft) (> 1') 1.4 upstream face slope: downstream face slope: dry storage: dry storage required (cy) (67*DA) 733.7 baffles: principle spillway crest (ft) 725.50 length of flow, L (ft) dry storage provided at this elevation (cy) 1223.0 effective width, We (ft) diameter of dewatering orifice (in) 6.0 L I We (baffles not required if > 2) diameter of flexible tubing (in) (orifice+2") 8.0 collars: runoff: depth of water at spillway crest (ft) C (use 0.45 for bare earth) 0.45 slope of upstream face (Z 1) tc (Twin) 17 slope of barrel (Sb) 12yr 3.20 Q 2yr 15.77 length of barrel in saturated zone (Ls) I25yr 4.80 Q25yr 23.65 number collars required dimension of collars principle spillway available head (ft) 1.00 emergency spillway: diameter riser (in) 48 required capacity (Q25-0p) (cfs) spillway capacity, Qp (cfs) 23.65 bottom width (ft) diameter trash rack (in) 72 slope of exist channel (ft/ft) barrel length (ft) 45.50 ninimun length of exit channel (ft) head on barrel through embankment (ft) 6.75 crest of spillway (ft) diameter of barrel (in) 18 726.50 728.00 10.0 719.00 47'x126' 2:1 3:1 YES 62 131 0.6 YES 6.50 2:1 0.5 % 39.8 2 4.0'x4.0' YES 0.00 35 33 % 30 726.50 Sediment Basin 'D' Design \ \ \ O Q O MIN.1: W SPILLWAY2 WTHOUT CRE51 OF EMERGENCY \ \ \ I I T U �ILLWAYdrainage area (acres) 6.14 \ O 0 y DESIGN HIGH WATER / i � basin volumes: (using 2' contour intervals) '(25-YR. STORM ELIN.) - Q Q elevation (ft) contour area (sf) volume (cy) 0,. -POWELLS CREEK - { P 2 2:695.00 2960.0 0 Mw 1 D - --- -- \ I I U LU 696.00 3681.0 122.7 RSER CREST \ , - - 698.00 5217.0 450.6 • DRY • STORAGE r DIUCE NO z 700.00 6881.0 897.3 WET STORAGE \ 702.00 8672.0 1472.1 - / / I p � LU LU wet storage required (cy) (67*DA) dewatering orifice elevation (ft) wet storage provided at this elevation (cy) available volume before cleancut (cy) (34*DA) cleanout elevation (ft) distance from cleanout to orifice (ft) (> V) 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) I2yr 3.80 Q 2yr I25yr 5.60 Q 25yr principle spillway: available head (ft) diameter riser (in) spillway capacity, Op (cfs) diameter trash rack (in) barrel length (ft) head on barrel through embankment (ft) diameter of barrel (in) 411.4 697.76 411.4 205.7 696.51 1.3 411.4 699.75 429.9 5.0 7.0 0.45 12 10.50 15.47 1.00 48 15.47 72 48.66 4.75 24 SEDIMENT CLiANOUT POINT ('WET • SMAGE REDUCED TO }1 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/1) minimun length of exit channel (ft) crest of spillway (ft) 700.75 702.00 10.0 695.00 32'x160' 2:1 3:1 NO 183 35 5.2 YES 4.75 2:1 0.5 29.07 2 3.5'x3.5' YES 4.97 20 6% 16 700.75 cn cj� CZS GRAPHIC SCALE LU Z 20 0 10 20 40 80 O ( IN FEET ) 1 inch = 20 ft. ANTI -SEEP COLLAR INSTALL OOLL R WITH CORRUGATIONS VFRTIGL COLLAR TO HE OF SAME GAGE AS THE PIPE WRH WHICH IT IS USED CONTINUOUS WELD 1/T x Y SLOTTED HOLES FOR 12' MIN. 3/or D(AI.IETER BOLTS. �,e U I e . + a e T Y BAND 1 WELD BOTH SIDES SLOTTED HOLES CORRUGATED METAL ODNTINUOUS WELD AT 1r C.C. SECTION B - B SHEET WELDED To CENTER OF HMO e ELEVATION OF UNASSEMBLED COLLAR 3. UNASSEMBLED COLLARS SHALL BE MARKED BY PAINTING OR TAGGING TO IDENTIFY MATCHING NOTES FOR COLLARS: PAIRS. 1. ALL MATERIALS TO BE IN ACCORDANCE WITH 4. THE LAP BETWEEN THE TWO HALF SECTIONS CONSTRUCTION AND CONSTRUCTION MATERIAL AND BETWEEN THE PIPE AND CONNECTING BAND SPECIFICATIONS. SHALL BE CAULKED WITH ASPHALT MASTIC AT 2. WHEN SPECIFIED ON THE PLANS, COATING OF TIME OF INSTALLATION. COLLARS SHALL BE IN ACCORDANCE WITH 5. EACH COLLAR SHALL BE FURNISHED WITH TWO CONSTRUCTION AND CONSTRUCTION MATERIAL 1/2W DIAMETER RODS WITH STANDARD TANK SPECIFICATIONS. LUGS FOR CONNECTING COLLARS TO PIPE. U, F-- Ln z O Q cl� JLU ��/ U) LU L.L Q of LU Q J o O 04 ri Lu O W a � JOB NO. 182154 SCALE 111=20' SHEET NO. 12 SEDIMENT BASIN'E' DETAIL SCALE: 1"=20' / - i PROPOSED SAFETY FENCE, - - - - -4B- - _ 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 / - / 7 ORIFICE (INVERT ELEVATION OF 730.00'). ONCE PHASE II ESC IS_ L - i COMPLETE AND THE ESC INSPECTOR HAS APPROVED THE 6 /// CONVERSION OF THE BASIN INTO A SEDIMENT TRAP, TH A� / CONTRACTOR SHALL REMOVE THE TEMPORARY RISER AND - yy / / / // E'/} / 4 TEMPORARY DOWNSTREAM CMP BARREL. 74-0 3� / ti(0/ 73 p� �X3 '34, o - .�f� A4 ♦ �� - �� " / 4" PUN TEMP. CMP BARREL, - - - - - � ENGTH=43', S=o.8%, INV. J- - - - - - - / N=728.84, INV. OUT= 28.5o / - - PROPOSED io' (MIN.) WIDE TOP OF DAM. ♦ / / PO STREAM BUFFER, TYP. TOP OF DAM ELEVATION=734.0'. # / lift 20' WIDE VDO CL. AI RIP�AP LINED EMERGENCY SPILLWAY w) 4:3 SIDE SLOPES & -RASSTIN`G ANALoo-YRYSIS IS PERFORMAINED PER FILTER FABRIC UNDERLAYMENT (STONE BYC COLLINSANALYSIS PERFORMED � \ � BY OLLIENGINEERING IN DEPTH=18"). SPILLWAY CREST ELEV.=732.50'. ) APRIL 2019, SEE WPO 201900027. Sediment Basin 'E' Design drainage area (acres) 4.83 basin volumes: (using 2' contour intervals) elevation (ft) contour area (sf) 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*DA) cleanout elevation (ft) distance from cleanout to orifice (ft) (> T) 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) I2yr 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 MINN. 1' WE SPILLWAY CREST OF EMERGENCY T WITHOUT SPILLWAY DESIGN HIGH WATER (25-YR STORM ELEV. MN. 1.0' _______ ___----- RISER CREST DRY' STORAGE :::' DEWATERNG OEACE WET' STORAGE SEMAE T- CLEANMM POINT (•TO - STOWERREM 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 53'x 146' 2:1 3:1 NO 120 58 2.1 YES 3.50 2:1 0.8 % 21.69 2 3.1" 1' YES 3.91 20 18 % 18 732.50 SEDIMENT TRAP'E'DETAIL SCALE: 1"=20' - -P POSED SA fT FENCE INSTALL SIGNS' WARNING�G -QUICK SAND, KEEP OUT" i ♦ X / / x /PROPOSED 6' (MIN') WI151�TOP OF DAM. TOP OF DAM ELEVATION-734.0'. - _ • / / PO STREAM BUFFER, TYP. STING ioo-YR FLOODPLAIN PER PROPOSED ROCK i HEC-RAS ANALYSIS PERFORMED WEIR OUTFALL \ i BY COLLINS ENGINEERING IN (WIDTH = 4.9') \ ) APRIL 2019, SEE WPO 201900027. SedimentTrap'E'Design drainage area (acres)(<3) 0.81 1-1 VARIABLE trap volumes: elevation (ft) area (so volume(cf) volume(cy) ORIGINAL CREST OF STONE WEIR YARIABIE GROUND 731.00 2214.0 0 0.0 ELEV. 732.00 2647.0 2,427 89.9 , 734.00 3619.0 8,668 321.0 DRY STORAGE - N n TS ORAG WET STORAGE - (E WTED) GLTER CLOTH OMGUAL GROUNO ELEV. wet storage: \ wet storage required (cy) (67*DA) 54.3 'SEE PIATE'''}T C� AGCRE"IT Cuss : RIPRAP bottom of stone weir (ft) 731.60 wet storage provided at this elevation (cy) 54.3 slope of wet storage sides 21 weir length (ft) (6xDA) 4.9 dry storage: bottom of trap elevation (ft) 731 dry storage required (cy) (67*DA) 54.3 bottom trap dimensions: 36'x96' crest of stone weir 733.0 top of dam elevation (ft) 734 dry storage provided at this elevation (cy) 54.3 top width of dam (ft) 6 slope of dry storage sides 2:1 top trap dimensions 48'x114' L�SEDIMENTTRAPWDFTAIL TH 0p E: 1"=20' M O EX. �O SCOTT R. LINS'Z / 447 3 i �4:��Rllvl C) No. 35791 ,a PROPOSED ELEV. L 10 3 24 21 R 748.6o, 18" CMP BARREL TIE INTO / IP �or� r'lyyv� _- EXISTING STRUCTURE x�`7 SstonA E�J - x - x / INV IN. 744, INV OUT. 743, L=39', S=2. 6D/a / PR POSED SAFETY FENCE, - - - / INSTALL SIGNS "WARNING x / QUICK SAND' KEEP OUT / u x� - 1 1 X- ��/ 4 i u 4 - --- 7� 1 v � <---- LI rn 1 1 H 1 U J - - - - C 0 a u 74 -��� ��� x O a � ED d x U En z ED r C _ X - x - PROPOSED & WIDE TOP OF DAM. I \ VJ N R Q z TOP OF DAM ELEVATION=750.50'. p� ` '% > j < - -750 .- \ Uj Of U Sediment Trap A Pipe Outfall Design FIGURE 3.29.2 PIPE RISER SEDIMENT TRAP drainage area (acres) (<3) 2.20 trap volumes: _ elevation (ft) area (sf) volume(cf) WEST ND WNIIAN: MA" 744.00 1072.0 0.0 "N EODON DLSRAI NRI 746.00 1800.0 105.2 SEN (" "') 748.00 2656.0 269.2 �" '•W a 750.00 3640.0 501.5 I= a. PEEL/ Aa !ASSET,Ia CT 750.60 3960.0 585.9 Dar STORAa A °fN'UOm16 NW`CE 1W0 N. NET/ AC. WR AOIMOE RLVAl10X N>R WET STORD[ .......................... .... MMIL wet storage: SEDIMENT CL4ROUT ELEVA1gN wet storage required (cy) (67*DA) 147.4 (M% D. Y'T stop E DDRET� PMTFCIIgI dewatering orifice (ft) 746.7 ADAPTED FROM; `" DYWD wet storage provided at this elevation (cf) 164.1 slope of wet storage sides 2:1 design high water (ft) 749.60 cleanout elevation (ft) 745.4 top of dam elevation (ft) 750.60 wet storage provided at cleanout (cf) (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 (cf) 173.9 bottom trap dimensions 16'x67' slope of dry storage sides 2:1 bottom of dam elevation (ft) 744.0 IN 00 I � M I � a r o r H z w I � f C) U i I z O U ICE: w a w Ln w W LU o 0) 0) . 0) N N LU 7 M N z co � J r W N CD 0) J N WN ���//'�� V1 ® - > LU L1_I Q J INANNANNANNII J i I --I 0 I n V) z Z i0 Q W U LU Y z � LULUo ~ LU Ul j F- (D z o LU H) z o U) Q JLU U LU Q w Q J o I o Lu 0 W a JOB NO. 182154 SCALE 1"=20' SHEET NO. 13 SEDIMENT BASIN'B' DETAIL / ,�� GRAPHIC SCALE SCALE: 1"=20' / / / / - 20 PROPOSED SAFETY FENCE, / - - ' \ NSTALL SIGNS "WARNING \ / / QUICK SAND, KEEP OUT" PROPERTY LINE, TYP. �i �i --- ( IN FEET) 1 inch 20 -ft. r PROPOSED WOODEN BAFFLES TOP ELEV.=747.83 / - A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A IZ)48") SHALL SERVE AS THE / � �'i PROPOSED VDOT STD. CLASS Al 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. RISER TO INCLUDE A PERMANENT TRASHRACK & ATEMPORARY / i (L=8',W1=3',W2=9',D=18") 06" DEWATERING ORIFICE (INVERT ELEVATION OF 744.78'). ONCE THE SITE IS STABILIZED AND THE ESC INSPECTOR HAS APPROVED THE CONVERSION OF THE TEMPORARY FACILITY TO A STR B-107 (8" HOPE). THE OPENING FOR THE 8" HDPE SHALL BE TEMPORARILY BLOCKED WITHIN THE MH / STR B-110 i \PERMANENT SWM FACILITY, THE CONTRACTOR SHALL PLUG THE TEMPORARY DEWATERING _ / TO PREVENT RUNOFF FROM ENTERING THE LEVEL / VDOT MH-1 - / ORIFICE WATERTIGHT &RECONFIGURE THE RISER TO MEET THE SWM SPECIFICATIONS. i - - - SPREADER & CONSERVATION AREA. TEMPORARY STR - - / CONVERSELY, THE CONTRACTOR MAY INSTALL THE RISER WITH SEGMENTAL RINGS & / / BLOCKING SHALL BE REMOVED AT THE TIME SB B IS B-111 REMOVE/REPLACE THE UPPER RINGS WITH NEW RINGS MEETING THE SWM SPECIFICATIONS. STR B-104 CONVERTED TO A PERMANENT FACILITY/ '(8" /y SEE SHEETS 17& 19 FOR ADDITIONAL PERMANENT SWM FACILITY DETAILS. VDOT MH-1 ' / HOPE) STR B-108 ' + VDOT MH-1 STR B-102 VDOTMH-1 1\11 � / \ / \ i/ / / / roa" HDPE) i / / - i' TR 8'1- � ,, f1D Ei / WPO STREAM BUFFER, TYP�. / a I ♦ / / / / PROPOSED FLAT LEVEL SPREADER'B'. SEE SWM PLANS FOR DETAILS. + / 5 / // + / + / x ..� �. J / / / r - -- �- - - TO PREVENT FLOTATION THE RISER i / r / /' + BASE SHALL BE FIRMLY EMBEDDED 6"- ' / + / INTO AN 18" THICK REINFORCED \ CONCRETE FOUNDATION THAT IS WIDE -(OP OF DAM 75 ELEV.=75o.00' 8'x8', AND BURIED BELOW GROUND. - / �' ' NOTE: SEE SHEETS 14-2oFOR DESIGN INFORMATION AND PROFILES OF THE BASIN OUTFALL SYSTEM AND LEVEL SPREADER. S - - - - - L /� / EXISTING i o-YR FLOODPLAIN PER. - ` / + i + / - HEC-RAS ANALYSIS PERFORMED PROPOSED o' WIDE VDOT CL. Al RIPRAP LINED - BY COLLINS ENGINEERING IN / - \ \ - EMERGENCY SPILLWAY w/ 4:1 SIDE SLOPES & / /- APRIL 2019, SEE WPO 201900027. FILTER FABRIC UNDERLAYMENT (STOPROPOSED FLAT VDOT CL. Al RIPRAP LINED OUTLET + + =i - s NE / DEPTH8"). SPILLWAY CREST ELEV.=748.6�' i' / / / PROTECTION WITH FILTER FABRIC UNDERLAYMENT / (L=15', Wz=6', W2=7.5', D=i8' )/' 1A + + �POWELLS CREEK Sediment Basin 'B' Design MIN. 1' WI SPILLWAY Y WITHOUT CREST OF EMERGENCY SPILLMAY drainage area (acres) 7.83 DESIGN HIGH WATER basin volumes: (using 2' contour intervals) (25-YR. STORM FLEW elevation (ft) contour area (sf) volume (cy) O.s' 740.00 1487.0 0 MIN. 1.0' '-- -- 742.00 2573.0 148.5 RISER CREST 744.00 3932.0 387.7 • 3RY ' STORAGE DEWATERING ° CE 746.00 5543.0 736.9 wET STORAGE 748.00 7402.0 1214.7 750.00 9513.0 1839.6 " SEDIMENT CL OUT POINT (• WET . STORAGE REDUCED TO 34 C.V./ 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'A5' 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 i We (baffles not required if > 2) 0.3 diameter of flebble 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 (ZA) 3:1 tc (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 4.6M.6' principle spillway: available head (ft) 1.00 emergency spillway: YES diameter riser (in) 48 required capacity (Q25-Qp) (cfs) 0.00 spillway capacity, Qp (cfs) 19.73 bottom width (ft) 30 diameter trash rack (in) 72 slope of ebst channel (ft/ft) 22 % barrel length (ft) 122.50 minimun length of ebt 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 III 7.83 9.66 4.35 - SCOTT/R. MbLLINS'Z No. 35791 ,a pow 3/24/21c�R N&IONAT. E�Ol Vl Z Z O d J a O C� m C C W In J f f Z O Q H `�J Ln Z .. U f Woff U `u N 00 I � M a r � r F- Z w I � O U I y I F Z O U I w a w Ln UJ w Lu 0) 0) . 0) N N LU Cl?7 co N z co � J N WCD Cn V) N J W N ® _ > LU LU o J I� J ~ 0 Ifi r- LU v) z i = 0 z Q LL W " w Y z � LU LU LU '0 W v, Ul j cj� QZ5 F- (D z O LU LL V) z Q JLU LU U) LU W Q J o Cq Lu w V) a V) JOB NO. 182154 SCALE 1"=20' SHEET NO. 13A / SWM FOREST AND OPEN SPACE EASEMENT NOTE: `2dI / I / / ' % \ 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). / / / � / // \ ❑ \ � \ � ICJ / � \ \� ---- --------C7 — \ � \ a �\--- — --- —/--- /----- _y_I - l- �T r 10- A ow r �'mill �_W_ w _may V / low / V♦ T TAL OF CGF w/ d ELEV-5' (Tc-0.1 1 / / /hrs. s •V / OTA,(fLF / hrs _ 1 0q CONC. FL W w LEV 5 c 0' OF/ LF w/ d EJ=E /� 4`- 01,025 OF CHNL SLOW 5 s\(T 0.6 s. /. I\ / / _ 400' F CONC.02 wr// d SUBARE A D / / i ♦ — \ \ \ / \/ // / /' �/ // / — (THIS PLAN) / TOTAL Tc= 0.18 hrs. TT/R. CI INSZ No. 35791 a 3/24/21 l 1aJ ! \ O \\ U an US 5 �ol-� U) z c r W \ Ce N W M I C1 1 Q i C1 1 1 i W 1 f o 1 U 1 y 1 F Z 1 7 U w .a o W u) I w I of 10w ELEV=6' Tc=o.1 rs/ J / / \ // // —/�--/ // i ■ / /-\ F-- /�— _ i _� --//— ' , ^ / / / 535' 9P FLOW w/ d EL V-40' (Tc� . / / / — \ _ — / / / / I\ \ \ CN-61 O ` / / / — PHASE I SUBAREAS A & B I t \ o SUBAREA C _ / _ \ \ W N N N N N 17 o N /\ )E�_a 9:0]rac —\_ r \ _—/— _ / ///i ///' /' // .16 hrs/ / '— /-ff3 --'"� , / I //�////'j/�/ 12.68ac. —T S-- QLEV= o l / / - / 22?Ir\_ A L9 / \ � �'j / / /\ / —\ — — — SUBAREA B / / / / � / / � \ _ _ / x✓//� � - I _ � / /r f / / / / / / s � \ A r` -THIS PLAN / / '`-- /i// A �/ �— � �/ /7/ vv r, CN= 4 i 4\ i-ma L°" �. oft 404f � / -\ CV lJ WElift�v r/// v — // 1 \�v — % / \ V A i/j/C O LU LLI CV LOCATION OF APPROVED PHASE I LLi CV LEVEL II BIORETENTION BASIN J mob°Q W J 1 °eeoeee J a _ / _J Y\1110 (/i— /��� �\ \ � _- � �� �',+✓ _ � - _/�� �/ � A — \\\A �A VAAA� �AVA AI � \\ �� ' °epO�00000%°p�O /�//�--� 1 w LU LU Lr) LU _--- / PROPOSED SWM FOREST & / / �A VV\\VA / v 'Z — — `i/ / i \\\ �\\\\ \O� \ \ / / \ / I \ I / Q OPEN SPACE EASEMENT, TYP. , — _/ Y \ \ \\\\ \\ \\\ \\ \ °ad I I I I RAMBLING BROOK LANE I J T z I ) — �\ \\\A \� � � I I0 le CONNECTOR ROAD SUBAREA A °e>,I > Ci LLU LU L I LU 1 I v _ I III / /,/ /� / I� 1 \ \ H LU U) L Z LU o \ 0 -- 01 o _ In \ o ,\ /�LU LU o _ LD J — — WATERSHED SUMMARY FOR SUBAREA B Area, 1-year Flow, 2-year Flow, 10-year Flow, — — ❑ ❑ — — — CN ac. cfs cfs cfs DA B (Pre-Dev.) 64 7.97 4.31 7.75 19.90 — — — — _ WATERSHED SUMMARY FOR SUBAREA C n CN Area, 1-year Flow, 2-year Flow, 10-year Flow, General Construction notes for Stormwater Management Plans ac. cfs cfs cfs 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to IDAC(Pre-Dev.) 63 9.01 3.86 7.43 19.61 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 CN Area, 1-year Flow, 2-year Flow, 10-year Flow, to permanent Stormwater management facilities; conversion is not ac. cfs cfs cfs to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. DA D (Pre-Dev.) 61 4.79 1.29 2.58 8.32 LU LU Q J 0 O / r (D W CD OC CD 0- N O \ \ \ Impervious Area Summary \ \ � Pre -Development Subarea B ❑O \ Existing Residences 37,600 sf \ \ Existing Roads 11,925 sf � \ , / 49,525 sf o � \ \ \ \ ❑ \ / Impervious Area Summary a N Pre -Development Subarea C Jos No. Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Existing Residences 26,800 sf 182154 Pre-Dev. Subarea Post-Dev. Subarea Channel Protection Compliance Limits of Analysis for Channel Protection Flood Protection Compliance Limits of Analysis for Flood Protection Existing Roads 18,450 sf SCALE 45,250 sf 1 1 Section B.3.a (Energy Balance) N/A (Energy Balance Satisfied) 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 1"=100' 2 2 Section B.3.a (Energy Balance) N/A (Energy Balance Satisfied) 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 SHEET NO. 3 3 Section B.3.a (Energy Balance) N/A (Energy Balance Satisfied) 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 14 N / ICJ -- --- -- _ 0 P/, ��// / / /// /r - \ r—L-1 TT/R. Cl,�LLINSZ No. 35791 a 3/24/21 N W 1 � M I p 1 Q i 0 1 i U) i W 1 � 1 � O 1 U i 1 I Z 1 M 0 w .a w >W ,Ce 3061OF CHNLLOWOW E�IEL V=(2 ' OTOcOr04 / \ % // I Y /\\///gV r I ' p / -- —_-J - _ Tc=0.23 h 11}t' \\\\\\ / CD f _ .: 71 / —`—�-- , —r� •^—_. AREA & i C C , �, PHASE I SUB S A B / 111 / / AC —73 / _ //7 / / / - - J „ r ' Q — � Q L9 55 CY LOCATION OF APPROVED PHASE I CV LEVEL II BIORETENTION BASIN 411 LU J J0. H1 ( / LU r/ — �• !` �/ �� i n�-� / _-o ®' — /'i�j / — A`A` VAS A\ �ee°pO i � — LU LU 1.0 LU LU PROPOSED SWM FOREST & L9 , OPEN SPACE EASEMENT, TYP. \e — Q Q ° I I RAMBLING BROOK LANE e CONNECTOR ROAD SUBAREA A y Q 1.10ac. > Q f S _ � yp J J \ / `vv\�\V `AA\XAV A�466omee0e099" �Ill� ease o� vv \,v LU Ul vv j LU LU 'EaE I z "71111- LU LU —17 LU O o \ S� -- 01 o CD 0\ IL EjJ[] _ Q —-STORMWATER MANAGEMENT (WATER QUANTITY) NARRATIVE: WATERSHED SUMMARY FOR SUBAREA B OVERVIEW: _ THE PROPOSED STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. CHANNEL Area, CN & FLOOD PROTECTION COMPLIANCE ARE MET IN ACCORDANCE WITH MINIMUM 9 VAC 25-870-66 ac. REQUIREMENTS. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS PERTAINING TO THIS PLAN's STORMWATER QUANTITY COMPLIANCE. DA B (Post-Dev.) 73 7.97 WATER QUANTITY SUMMARY THE VAST MAJORITY OF THIS PLAN's PROPOSED DEVELOPMENT IS CAPTURED VIA STORMWATER CONVEYANCE WATERSHED SUMMARY FOR SUBAREA C SYSTEMS. THE PROPOSED STORM SEWER SYSTEMS DISCHARGE INTO THREE PROPOSED STORMWATER MANAGEMENT FACILITIES, EACH OF WHICH HAS A CONCENTRATED OUTFALL. SWM FACILITY 'B' F1ATTENUATES CN Area, RUNOFF FROM SUBAREA 'B', SWM FACILITY 'C' ATTENUATES RUNOFF FROM SUBAREA 'C' AND SWM FACILITY ac. n D' ATTENUATES RUNOFF FROM SUBAREA'D'. CHANNEL AND FLOOD PROTECTION ANALYSES WERE PERFORMED AT ALL THREE OF THESE FACILITIES' CONCENTRATED OUTFALLS. DA C (Post-DeV.) 75 9.01 FROM A CHANNEL PROTECTION STANDPOINT, ALL THREE STORMWATER MANAGEMENT FACILITIES ARE NS, DIAMETERS, SLOPES, etc.) OF YARD COMPLIANT WITH 9 VAC 25-870-66 SUBSECTION B.3.a (ENERGY BALANCE) AND THE LIMITS OF ANALYSES WATERSHED SUMMARY FOR SUBAREA D 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, 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 CN Area, 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 — ac 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 (THE SWM FACILITIES INLETS, AND SHALL BE DETAINED VIA THE PROPOSED SWM FACILITIES. OUTFALL TO A MAPPED FLOODPLAIN OR OTHER FLOOD -PRONE AREA). DAD (Post-DeV.) 79 4.79 LU Q LUo s 1 CD 1-year Flow, 2-year Flow, 10-year Flow, / cfs cfs cfs \ 0.90 5.21 22.20 / w 1-year Flow, 2-year Flow, 10-year Flow, Impervious Area Summary Impervious Area Summary Impervious Area Summary o w cfs cfs cfs Post -Development Subarea B Post -Development Subarea C Post -Development Subarea D 1.40 10.11 22.22 Proposed Roads 15,075 sf Proposed Roads 35,150 sf Proposed Roads 18850 sf JOB No. Proposed Sidewalk 5,025 sf Proposed Sidewalk 13,975 sf Proposed Sidewalk 7275 sf 182154 Proposed Driveways 9,495 sf Proposed Driveways 14,310 sf Proposed Driveways 11,475 sf SCALE Proposed Residences 34,500 sf Proposed Residences 55,775 sf Proposed Residences 9675 sf 1"=100' 1-year Flow, 2-year Flow, 10-year Flow, Existing Residences 37,600 sf Existing Residences 26,800 sf Future Roads 14650 sf cfs cfs cfs Existing Roads 11,925 sf Existing Roads 7,750 sf I Future Residences 38825 sf SHEET NO. 0.31 5.58 15.71 >1 113,620 sf 153,760 sf 100,750 sf 15 \ STORMWATER MANAGEMENT WATER QUALITY NARRATIVE: / / O I POST -DEVELOPMENT SWM WATER SCALES"=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 \ PHASES I, II & III. THIS ANALYSIS YIELDED A SURPLUS OF WATER QUALITY CREDIT, WHICH WILL BE \ \ _ _ _ - _ DISTURBANCE BOUNDARY, AREA=34.49 APPLIED TO THE CONNECTOR ROAD VSMP PLAN (WPO 201900027). THE SECOND WATER QUALITY ANALYSIS _ acres IS USED FOR THE TOTAL VRRM \ PERFORMED WAS TO CONFIRM THE MINIMUM PHOSPHOROUS REMOVAL RATES ARE ACHIEVED FOR THE \ - r / I 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 J / / i ' 0 WATER QUALITY SUMMARY � 000 000 THE BOUNDARY FOR THE FIRST ANALYSIS (i.e. THE BOUNDARY FOR PHASES I, II & III) HAS A TOTAL LIMITS '� OF DISTURBANCE AREA OF 32.50 ACRES. THIS BOUNDARY WAS USED FOR THE VIRGINIA RUNOFF / p '� ' 0100" r( REDUCTION METHOD'S WATER QUALITY BOUNDARY AND RESULTED IN AN OVERALL REQUIRED / 000 � / ❑ �, I u II PHOSPHOROUS REMOVAL RATE 23.87 Ibs/yr. �' / �' THE BOUNDARY FOR THE SECOND ANALYSIS (i.e. THE BOUNDARY FOR PHASES I, II, III & THE CONNECTOR ROAD) HAS A TOTAL LIMITS OF DISTURBANCE AREA OF 34.49 ACRES. THIS BOUNDARY ENCOMPASSES THE ENTIRE PLEASANT GREEN DEVELOPMENT AND WAS USED FOR THE VIRGINIA RUNOFF REDUCTION METHOD'S 0 Y WATER QUALITY BOUNDARY. THIS BOUNDARY RESULTED IN AN OVERALL REQUIRED PHOSPHOROUS CREMOVAL RATE 24.67 Ibs/yr FOR THE ENTIRE PLEASANT GREEN DEVELOPMENT. i ' s 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 / /=� /✓ / I201900027 & WPO 201900027 AMENDMENT #1). THIS PLAN, WHICH ENCOMPASSES PHASES II AND III, SUBAREA C� ! \ / TREATS SUBAREA B VIA A LEVEL II WET POND AND BY RELEASING ITS TREATMENT VOLUME RUNOFF IN A n 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 OF 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. / TT/R. Cl,�LLINSZ No. 35791 a 3/24/21 N > 00 w M U) r/ Q J N / zZ O < \y U) °i$ w O~a U y co N (vA' w Z J ti .--i / O F p Z / U) Z F O > Q V l 9 Lu 0 UI cc n _ - / - - - ' A, / - i SUBAREAS ,� _-vas+- / A�"- �. iii� -°_ o _ b C WATER QUALITY GROUND OVER MASTER PLAN SUMMARIES SUBAREA E APPROVED LEVEL II E ON BASIN Ur Phase I Limits Of DIStUrbanCe 15.51 aC. A � / �j / (ASSOCIATED WITH PHASE I, , WPO 201900003) COVERED UNDER SEPARATE PLAN Connector Road Limits of Disturbance 1.99 ac. Phases II & III Limits of Disturbance not Previous) Covered 16.99 ac. -��� y / - / Under Separate Permit _ / 1,, ��APPROVED LIMITS OF DISTURBANC - _ /- - - Total Limits of Disturbance = 34.49 ac. ° _ �\ / I h ASSOCIATED PHASE I WPO 201900003) & w N N N / r. (Used fOr VRRM WaterQuality Boundary) �� �� / 11 -PROPOSED LIMITS OF DISTURBANCE Q N N PROPOSED LIMITS OF DISTURBANCE /. \ //�/� - - \�� �` •,II \ II` ( SSOCIATED WITH THE CONNECTOR ROAD, WPO 0 ,N-i t i I 01900 7)-COVERED-UDDER SEPARATE PLANS !/ - - - -,• - - __ - \ \ sv �� / °,�°_ "(ASSOCIATED WITH THIS PLAN) NOT /// / ���� - Z Approved Phase I Impervious Areas- Soil Type B 4.55 ac. \ b I I) d6o - / PREVIOUSLY COVERED UNDER COnnettOr Road ImprewousAyeas- Soil Type A O 51 ac.SEPARATE PLAN /(o -_ Phase II Impervious Areas- Soil Type B 6.63 ac. \ \ - - i 1 / / # Phase III Impervious Areas- Soil Type B 1.90 ac.- /� \ ' / / / � ✓�� � - �/ / / r J � j __ _- �- __ ` / / _.. _ - - _ I // i�_/ / Total ImpeNOUS Areas = 13.59 ac. ` -'� - \ JOpOOo o0. / ManagedTurfAreasWithinLOD- SoilTypeB 19.42ac. \ S / I { ° MATCHLINE, SEE PROPOSED`SWM FOREST �_ // // \ , \ go-Op�N_sPAeE_EEmEaT, / - Managed Turf Areas Within LOD- Soil Type A 1.48 ac. / / \ / �d I I I I I I I THIS SHEET _ - - _- / // Total Managed TurF Areas = 20.90 ac. \\ I� °call I I I I I I milil o� -III ��IIIII \II TFIo-TCHMMW LINE,i / v \ PRE-DEVELOPMENTSWM WATER QUALITY PLAN: _ ° SEE J - - -' SCALEV'=100' - - - - - - - - 4 e / co �- o I I, SHEET /� /,> J -y/ / �� - - - _ / / -�1 �w"j- lr� 01�f \ o l III ° THIS S (C - �/ -- J _-- ----- THE TOTAL ESC LIMITS OF - --- / / /- ° w �` ----_ - - /` ,- ❑ I / - / - / / /i - - / \ C) 1--1 -- -DISTURBANCE BOUNDARY, AREA=34.49 / ) / p J \°° IS USED FOR THE TOTAL VRRM /-/ / / w/ w 'i - jLLI Q ;I �-\ \ °•�oe°°� I` \ J \ BOUNDARY FOR WATER QUALITY v 1.� v ` D \\ \ i _ 1 U LfL9Q I— < J CD APPROVED LIMIT OF DISTURBANCE yiASCI; // . WPO 201900 3, WPO 2019000Ci,_WEA 2019 027 AMEN MENT#1)&PR DLIMITS \ \ _/// / i / `�/�. //=� /✓ /� j / // // //// / -'«- \O / �// JI I / / \r \y\ LL F DISTURBANCE (CONNECT ROAD, WPO •`�- _ / / I I // C / / -.x / / / / / '^'- - / l I l / \ k'� / Q LU 2019000 CO ERED UNDER PARATE PLANS). / / // \ / - -/ / / / / / r - / / / / / / /\� , ' \\ = W �" / C)� \\ Y IIwnn LU - - w y / �// 5 /�/ -/ / / / l \ \\ p / / /j /�/�11 / - �11\ w � \ /' //�/ � I / � / / / / �- \- � �'r--' / / /�/l � �\ ' /ice/i/�/ / /� �//�//• �---,,,�1 /�// ����III \ / H V LU LU V;; LU Uj PLEASANT GREEN WATER QUALITY MASTER PLAN J '~^ SUMMARY OF PHOSPHOROUS REMOVAL RATE REQUIRED\ 7 r1 v, 1-. SUBAREA E -� gppROVED LEVEL II BIORETENTION BASIN (J Total Phosphorous Removal Rate Required for Proposed Pleasant Green Phases I, 11, III and the Connector Road 24.67 Ibs/yr \\ CL (See this plans report for the Phases I, II & III and the Overall Pleasant Green Water quality Analyses) \• \\ \\ ' r; \ /� /j� / (ASSOCIATED WITH PHASE I, WPO 201900003) 0 \ \\ \\ COVERED UNDER SEPARATE PLAN CD C\I / /` / / / / / / / / / �� / -- //r - 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 u \ - ,,' 0.27 Ibs/yr credit is independent of the Pleasant Green development and is not used in this table's mmpuations. See WPO 201600069 Amendment #1 for additional details. APPROVED LIMITS OF DISTURBANC \\ -PROPOSED LIMITS OF DISTURBANCE / (ASSOCIATED PHASE I, WPO 201900003) & SUMMARY OF PHOSPHOROUS REMOVAL RATE PROVIDED PROPOSED LIMITS OF DISTURBANCE / \ `•,II \ I ( SSOCIATED WITH THE CONNECTOR ROAD, PLANS U ! / / -- - - -,. - - \\ � _�- / / / / / � Approved Phase I (WPO 201900003) Phosphorous Removal Rate Achieved from Nutrient Credits 6.97 Ibs/yr �, - \ I �01900 7}rrOyER.ED-UDDER SEPARATE PLANS w / - / / (ASSOCIATED WITH THIS PLAN NOT \ \ I I I es°tu PREVIOUSLY COVERED UNDER p p ( ) g ( ) 0060 \\\ to / i ' - - N Approved Phase I Borrow Area (WPO 201900027 & WPO 201900027 Amendment #1) Phosphorous Removal Rate Achieved from Nutrient Credits 0.18 Ibs/yr I a� SEPARATE PLAN Proposed Phosphorous Removal Rate Achieved from Phases II & III WPO 202000053 Level II Wet Pond Outfallin to Conservation Area Subarea B 7.59 Ibs/yr Proposed Phosphorous Removal Rate Achieved from Phases II & III (WPO 202000053) Outfall to a Vegetated Filter Strip (Subarea C) 5.07 Ibs/yr JOB NO. = - - - / V\V - - -� --- _ -- , Proposed Phosphorous Removal Rate Achieved from Phases II & III (WPO 202000053) Outfall to a Vegetated Filter Strip (Subarea D) 3.06 Ibs/yr A °°eepOp YYY / - - - 182154 y�"� Approved Phase 1 (WP0 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/yr _ - / ° I� I MATCHLINE, SEE °O , - - SCALE / / / ✓ w 'V� / / o /I 1\ \V A �,. �� !i- �>�- -- - / it I / 1n=100' PROPOSED�'.,Y.(M FOREST / / Total Phosphorous Removal Rate Provided 25.88 Ibs/yi / / \ ,� I - ° A SHEET NO. _&-OP-DUP�� EMENT.,_- - - - -j / / '`i ' Total Phosphorous Removal Rate Provided Onsite 18.73 Ibs/yr ° / gl I I I f I III I THIS SHEET �- / T - _ ._ - �� / �/ / Percentage of the Required Phosphorous Removal Rate Treated Onsite (18.73 / 24.67 x 100) 76 % `� I°ddl I f-T �� 16 -}&4- STORM WATER MANAGEMENT FACILITY 'B' DETAILr SCALE 1"=30' / / / /------x FLOW PATH >�:Z (FLOW LE�dGTH=z38' / WIDTH=45') %j \ \ / \ TRACTOR HALL USE NU 1ENTRICH TOPSaILFOR THE \ \ \ \ / z' WIDE INTERIM TOP OF DAM ELEV.-746'. RUNOFF / (q AQUATIC BENCH & SHALL ENSURE \ \ FROM THE WETLANDS & FOREBAY CELLS TO HEALTHY GROWTH OF PLANTINGS \ \ ENTER THE MAIN CELL VIA AN OVERTOPPING. DURING\ HE FIRSTY�AR (TYP.) / \ \ \ _ \ �/ \\7 / `8'WIDE VDOT CL. Al RIPRAP LINED -------------- \� /� \ FOREBAY SPILLWAY CREST ELEV.=745'. \ \ \ \ \ SPILLWAY TO CONVEY RUNOFFFROM WETLANDS \ FOREBAY TO WETLANDS CELL \ 1o' WIDE, 12" DEEP \ AQUATIC BENCH SHORTEST FLOW PATH BY) / �l \ F esf ,-_ I M\ c of Vsf / OVERALL LENGTIi�( 03')>0.8 pC \ �\ \ TO PREVENT FLOTATI N THE ISER BASE SHALL BE FIRMLY \� 2 1 Z. B-100, A VDOT STD. B-1 (CONCRETE MANHOLE BASE WITH A EMBEDDED 6' INTO A' I - - _ 048") SHALL SERVE AS THE RISER's LOWER SECTION, IN THICK REINFORCED CONCRETE I\ O Lp cV CONJUNCTION WITH THE PROPOSED REINFORCED CONCRETE FOUNDATION THAT IS 8 x8,1 \ - NG / F RF - / ( FOUNDATION. A 048" STANDPIPE WITH A RIM ELEVATION OF 747.67' \ \ AND BURIED BEL01(V GROUND: / eq \ / SHALL COMPLETE THE STRUCTURE. RISER TO INCLUDE (1) ONE \ \ g� -/ / /` \ PERMANENT 06" LOW -FLOW ORIFICE WITH AN INVERT \ \ \ PROPOSED VARIABLE WID�H ssf \% \ `,_SWM & ACCESS ESMT. 1 I OF eC N / t� - \ \ ELESTING EM CONTRACTOR SHALL PERMANENTLY PLUG ANY \S \ \ ICI 0 ':' - EXISTING TEMPORARY ESC DEWATERING ORIFICES WATERTIGHT AT \ `O THE TIME OF THE FACILITY's CONVERSION, OR REMOVE THE UPPER TEMPORARY RINGS. ALL ORIFICE OPENINGS SHALL HAVE STATE S \ - \'r \R • ' ...•_• APPROVED TRASHRACKS, TYPICAL. SEE THE DETAILS ON SHEET 19, \ �� ,.� •.•.©+:af)': •\ OR EQUIVALENT, FOR ADDITIONAL INFORMATION. \ P PROPOSED 6' DEEP FOREBAYTO ,... .�. '. x....... � � � .•.`/^.'.'. •. •.'.'.'. •••� \' '.'.• ' '. �\� - -PROVIDE PRETREATMENT UPLAND \ � \\ _ \ � • � \\:•..:....: \ \\ � OF MAIN CELL&WETLAND CELL. \] PROPOSED :30 WIDEVD`O`TC 73€RIPRAPLINED EMERGENCY SPIL �� S\ SIDE SLOPES&FILTERFABRIC\•\ ^ \ \ \ UNDERCAYMENT(STONE .DEPTH-_18"): 10 WIfZE TOP'OF DAM \ 10 U � \ \ \ \ SPILLWAYCREST-€LEV:148.67. ELEV.-75o.00,Y1; �� \ \ \ / \ \� •'•'- ;' \ \ \\ \ \ PROPOSED 10' WIDE GRASS \ \ \ SEE THIS SHEET FO \ \ \ LINED, GRADED SWM ACCESS SCALED PROFILES OF \ \ ST�l-R \ \ (2%MAX. CROSS SLOPE) - ' .. \ 1 THE-SWM FACILITY, TYP:. EXISTING 100-YR FLOODPLAIN PER - - \ \ S \ a\ \ \ _HEG--BAS ANALYSIS PERFORMED BY COLLINSTENGINEERING IN APRIL \ \ 2019, SEE WPO 201900027.3+00 -.. ♦ \ - \ \ \ \ \ M' \ / \ \ \ \ \ W-PO STREAM BUFFER, TYP:\\e1� \ -\ •.\ \� °\. \ \ \ PROPOSED VARIABLE WIDTH SWM FOREST &OPEN SPACE \ \\ \ \ EASEMENT. ST B-104 \ PROPOSED STIR B-107, A 08" LOW -FLOW OUTFALL_CARRYING THE TREATMENT VOLUME \ \FLOW TO LEVEL SPREADER B (75.5LF OF 08 HDPE @ 1.00 /o (II-736.37, I0-735.61) . p • PROPERTY S. \ .M \ \ TYP. _ \ \ I F \ \ / / / \ \ \ - \•\ .. e - \,x 'co \ \ \ \ I \\ \ \\\ \ \\\cX \\ \\ I // STRB-108 VDOT MH 1 STIR B-109 S \ \ \ RIM 739 50 - I + IA \\ \ 1 \ \ \ PROPOSED 68' LONG FLAT LEVEL SPREADER'B'. LS TO \ HAVE AI2"DEEP PLUNGE POOL &6" WIDE RIGID LIP. LS TO INCLUDE A VDOT CL. Al RIPRAP LINING AND A SLOPED 3' (MIN.) VDOT CL. Al RIPRAP LINED EMBANKMENT \ \\ DOWNSTREAM FROM THE RIGID LIP EXTENDING TO THE \�\ EXISTING GRADE. ALL RIPRAPTO INCLUDE FILTER FABRIC\ UNDERLAYMENTS & BE A MIN. OF 18" DEEP. \ \ PROPOSED FLAT VDOT CL. Al RIPRAP \ \ LINED OUTLET PROTECTION WITH \ \ FILTER FABRIC UNDERLAYMENT \ \ >\ \ v (MIN. L=iS', W1=6', W2=7.5', D=18") \ v I I \ 55+ 0 \ \ \ \ \ 1: AQUATIC BENCH (ZONE 1) PLANTING SCHEDULE FORSWM FACILITY \ \ \ \\ \ \\ \V A A SYM BOTANICAL COMMON NAME 9ZE SWM FACILITY QUANTITY COVERAGE( 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 ig, OR EQUIVALENT, FOR INSTALLATION. 2. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.14 SPECIFICATIONS. 3. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE EMBANKMENTS ARE STRUCTURALLY SOUND. THE EMBANKMENTS SHALL HAVE 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 MIL, 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 2%OF OPTIMUM MOISTURE CONTENT. ALL EXISTING AND PROPOSED FILL MATERIAL AND PROPOSED CONSTRUCTION SHALL BE APPROVED BYAN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OFTHE EMBANKMENTS AND FILL AREAS, AND PRESENT DURING THE CORE SAMPLING. 4. THE DOWNSTREAM EMBANKMENT SIDE SLOPES OF ALL PERMANENT FACILITIES SHALL HAVE A MAXIMUM 3:1 SLOPE. 5 CONTRACTOR SHALL EXCAVATE SEDIMENT LADEN MATERIAL IN THE ESC SEDIMENT BASINS ATTHE 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 TO, SEDIMENT REMOVAL, PERIODIC MOWING, REPAIR OF THE 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 OF THE CONSERVATION AREA IS REQUIRED IN ORDER TO MAINTAIN A go%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 ATA MINIMUM: 2. 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. L 3. CHECK FOR SCOUR AND EROSION WITHIN THE LEVEL SPREADER SYSTEM AND CONSERVATION AREA. 4. 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. 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. 1o' W I DE TOP OF DAM ELEV.=750.00', TYP. 755 755 750 750 PROPOSED X STING 30' GRADE GRAD 745 745 1 % O JJ O O . O W W O 0 lO 00 W 0+50 0+75 / 65.45 LF OF 08 HOPE @ 0.90 /o \ \ (II=735.51, IO=734.92) STR B \ -� / / S VDOT MH RIM=737.00 STIR B-111 \ \ \ - / 1.90 LF OF 08" HOPE @ 3.68% \ \ L (II=734.82, IO=734.75) \ \ \ S \ PROPOSED VDOT STD. CLASS Al RIPRAP LINED OUTLET PROTECTION \ \ \ WITH FILTER FABRIC UNDERLAYMENT (L=8', W14, W2=9', D=i8") \' yr' . �3t \ 734.75- BEGINNING OF LEVEL SPREADER / ` \ TT - // r`/ 733.5- BOTTOM -OF LEVE"LSPREADER _ \ 734.5- TOP OF LEVEL SPREADER \/\ \ - \ 734.0 6g ( 733.. \ 733.8 war�aift �. a PROPOSED 68'WxSoL' CONSERVATION EASEMENT. AREA WITHIN \C51 EASEMENTTO REMAIN UNDISTURBED&TO BE LOCATED '9 � 0': MAX. �- I OUTSIDE THE LIMITS OF DISTURBANCE. NO GRADING OR \ \ SLOPE= 2% CLEARING OF NATIVE VEGETATION IS ALLOWED WITHIN THE \ \ i EASEMENT. EASEMENT PREVENTS FUTURE DEVELOPMENT. 73 _ - 732.2 \ \ �2PE RANGE-- 3 6% \ WET POND'B' DESIGN & REQUIREMENTS: Treatment Volume, Tv (VRRM) Minimum Treatment Volume Required for Level II Basin Treatment Volume Provided at MWSE Minimum Percentage of Tv Provided at MWSE Percentage of Tv Provided at MWSE Ponding Depth Corresponding to Minimum Tv Required Maximum Ponding Depth allowed for Minimum Tv Maximum Percentage of Tv Provided above MWSE Percentage of Tv Provided above MWSE 12,892 cf 19,338 cf 13,203 cf 50 % 68 % 0.7 ft 4 ft 50 % 32 % Minimum ForebayVolume Required 15%of Tv 2,901 cf q ( ) 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 V=5' (V) 1"=50'(H) SWM FACILITY B SPILLWAY [9CE]:lulTiT/_�l�:�u►_V /_C6f �ul��lly_LB]I�I�rL6t:7_U71�[el 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 STIR. 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 0411" 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 -7IZ,1 I 10-yr PEAK WSE=748.31 rLL'Y -- -yr S�_,4,.L, AK PROPOSED mo'WI E TOP 01 DAM EL V.=75o.0 (MAXIMUM ROSS SL OPE OFz ). CONTR CTOR S ALL INSTALL 2' WIDE INTERIM EMBANKMENT I ACCO DANCENI 750 OP OF AM THE DESIGNS SHOWN 0 SHEE 19. 750 ELEV.= 6'. WET POND TO INCLUDE AN hP} VDOTM -1 AERATOR. SEE THIS SHEET �S RIM=749.00 FOR DETAILS, OR EQUIVALENT. �.J PROPOSED GRADE745 745 STIR B-1 4 h o WIDE 12DEE 'a .y AQUATI BENCH EXISTIN z. RIMVDOTM74 0 GRAD LINED OUTLET PROTECT ON WITH 740 FILTER FABRI UNDER AYMENT 740 MIN. L=1' W1 6' W2= D=18" PROPOSED 6' DEEP FOREB Y TO PRO IDE PRE REATME T UPLAND OF MAJIN CELL & S R B-101, 122.56 F OF 02 " HDPE ETLAN CELL. @ 1.000 (II=73 .48, I0= 38.26) 735 7 T STIR B-103, 88.91 LF OF 0 4" HDPE1 TO PR VENT F TATIO THE RIS R BASE S ALL BE IRMLY @ 1.90 a (II=73 .16, IO 736.47) EMB DDED 6" NTO AN 8" THICK REINFOR ED CON RETE FOUNDATION HAT IS 8' 8', AND URIED B LOW GR UND. LOW FLOW O TFALL C RRYING STIR -105, A 24" HI H-FLOW 73O THE REATME T VOLU E FLOW BYPASS O TFALL WITH A V OT STD. 73O TOLE EL PR ADER' ES -1 (1 7.98 LF OF 024" HDPE @ 4.37% (II=73 .20, I0=731.17) - Dooil 00 O14 r 00 N. 14 ' KL0Lj(L 0) Co LC) LC) 'nLn 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 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 [gfi%�g�ESgIg�Eie�g� e�gIg� .��g�flgZg� e��g=.'�IRIg=.'�Yg��iIRIg���, SWM FACILITY B SECTION AIR FLO 3 DIFFUSED AERATION SYSTEM SPECIFICATIONS PURPOSE the d,ftu sod air, aefation r1 mvfacturer shall provide an underwater aeration system designed to aerate, the stratify. and circulate water without disturbing the natural surroundings of the lake environment. SCOPE The diffused air, aeration package shall be capable of being installed in lakes deeper than aft Ilm). PACKAGE This aeration package shall include the following equipmenC a. Air coonP ressor cabinet enclosure. To Include compresspr(s), circuit disconnect. and air flaw balancing valve manifolds. To be designed to operate on either: 1. light power, 115/208/230 vcf4 single phase h. SlI power. 220/240 volt, single phase b. Air/Oxygen disc diffusermamfolds c. Tubing CABINET/ENCLOSURE TUBING SAsnilabk In 100ft Claim? incnmenpl O 1 Compressor Total required tubing for system: Qa 2 Compresses feet (_ m) Non -weighted polyvirsyl chloride tubing SPECIFY: 115 Vatts He het (_ m) Weighted polyethylene chloride tubing DIFFUSER MANIFOLD(S): fSmak w Otte/ Ourl Tubing lengths per diffuser man :fold: Quantify Type .._. .-..- ..-- ----- ----- Single Oise Manifold(s) _ (D feet 00 metersl Nan -weighted tubing Ducal Disc Manifold(s) _ O feet to meters) Weighted tubing 1 - f rl k Ion r r compressor(s) s shall heal 2HPmcki MSTON A R COMPRESSOR. (o a es 3h ( I deep on huge,) l The al coon K I / 0 a g P n9 piston, dual frequency. Permanent split capacitor (psc) electric motorsviUl ollless IuDricanon, direct drive (no belu or pulleys), designed for field service capability, polyurethane rust protection• and to include the follows motirproteaion. thermal oiedlxd protection. and Intake air filter. The serviceable pans piston Cups, retainer screws, cylinder orings, head o-rings, valve and valve retainers: should last two Years in continuout operation. These maintenance parU shall be replaceable With common tools. Meese consult your local distributor If you require assistant in chgasing sizes, accessories. orapPlkatwns_ AIR COMPRESSOR CANNEr ENCLOSURE L Cabinet body and cover construction shall be 18 gauge (0.048m/0.322cm) 304 stainless steel, and Include E➢DAA edgegnp seal Is. Cabinet cooling system to consist of two (2) axial exhaust fans and vented )nuke louvers on the bottom of the ahinet to provide an air exchange rate of 410-4910 CFM c. Compressor -:make air to be quick change cartridge type filters d. Cabinet erxlosure severed by stainless steel latch to accomodate locking mechanism A, rIJ 1 arrow Ar asnm Spepauoars I rape t a z AF3-242; PIN 03-3242 OR APPROVED EQUAL •via: FAIR FLO 3 DIFFUSED AERATION i NO electrical parts In Hater, safe for recreational use. Extremely energy efficient and cost effective, a 12111(350mm) discs arc coated to pro%lde non-stick surfam end offer higher efficiencies throughput lifecycle- . Operating depths up to 40ft+ per 12 2m+. DIA,a„v UYn, Wq.Oe[Y,nlal PRODUCT ILLUSTRATIONS 2 )Yar all-ioalusisc warranty. g 6 :� rn,-wwmn,R•ar.imwaneam4t,a . Complete package includes cabinetwith compressot(s), a filter and vane manifolds; and diffuser mare fold(s). DR.,r n..n,nY.rn•an.red 40 0Ynq W Mbr4•ro W,nM J.MaW W 4nNnW1 W a Safety tested and hsled with EM&LTL-C, conforming j y.sl.-nsRwwmrv4,wW-n to UL standards; and carries a 3 rd party listing With C& d ;" '„",o°"';°` (°; ",,.'"";,• * ;,";"w„„ e Sy31W •� ate - r ,vow. wslw,wrc NJ'lil 3 t } i �y 3" Ina ,iVf Lf•1 Jo 1.2 M 1. 1 M Nr 1 ° e ' om_ I : s u 11f/a.4L0 IW3.nW aaYt.Nt M}ial 4 MNI 4 as.sm t ,as toe • M-Mt e ti Ilan. If,,.1041[Yllw•Jlr[nllN Unnntlnt :Pura n,4b,IlluWrw lNlux'n• alNYnrvllW Mnv[Mu.JRNMJ, erJwnD e .,.• „sin.,... m.,n< 4a its '«..Mw rr^Jb.0 4rrueNrurlr w� xral•MM<e, b(Ilq w"Muiw Y o c.••"......-,r wh".we..,o�..w.�w�w..-ram E Jmehwu,., A,W Wr,.�ur«ni iN. i.ra. u,ul. ,rvr„N.,�r.m��. �alw�[F[Ivrn.rrJlerean i TJ.L,cr[p[rr.a,"xIiJM (.tpr cJnbfouManfiwa 5 rnra,gi[,wlupnrd,ne.com or nww.cwignn,h.cwn AF3-242; P/N 03-3242 OR APPROVED EQUAL PROFILE SCALES 1" 5' (V) AIR/OKYCEN DIFFUSER MANIFOLDS. The air/oxygen disc diffusers shall include, but not be limited to, the following materials of comuumon. a. Disc type 12in (350mm) membrane diffusers allow for maximum 12CFM and are resistant to Ozone and W b. Membrane material to be premium quality compression molded EPDM with an oil content of less than 12% c, Diffuser membranes should have a minimum of III slit perforations and be at least 70% hydrophilic, with tensile sue ngth at 2000 psi d. Diffuser to consist of membrane with integral gasket, base, retaining ring, and air flow control lriifice e. Membrane shall collapse and seal when aeration system air is turned off f. Scaling method of retaining device shall generate a minimum of 50 pounds per inch/58 Kg/cm of circumference of the sealing gasket to provlde along term positive seal and tD prevent air escape g. Diffuser base and retaining ring lobe constructed of polypropylene with organic UV stabilizers and a tensile strength of S000 psi h. Dirri5er to have one 3/4tn (2.5cm) connectlon method to manifold i. Each diffuser shall include a manifold that will connect up to two M air -di scs to the air supplytubing j. Manifold base shall be constructed of high•density polyethylene plastk and Incorporate ballast channels for level sinking of ads dun installation s 9 p n9 WEIGHTED POLYVINYL CHLORIDE TUBING: Tubing shallbeconstructedof heavy, negative buoyancy, ondwhilyl chloride IFVQ material, The PVC tubing shall be 1 fY (I emjsvnh a minimum wall thickness of 1/4" (.64 cm). Pressure rating shall be,22S Psi at 700F (210C). Call lengths shall be 1 DO' (30 m), with a weight ptr 100' (30 m) of 431bs (20 kg). Tubing shall be self -sinking, Nad free, and contain carbon black far UV protection. Plnse consult Your local distributor for additional Information. NON -WEIGHTED POLYETHYLENE TUBING The polyethylene tubing shall be 1 /2in 0 cm) with a minimum wall thickness III 0.5mm), Pressure rating shall be 100 psi at 73 F (22 0. God lengths shall be 100' 00 m), with a weight per 1 Doh 00m) of 1116s (5 kill. Tubing shall contain 2116carbon black for long term W protection. Please Consult your leap distributor for additional Information. INSERT FIRINGS. Intent hunios 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 unit. Separate component testing no[ allowed. Unit must be tested by ETL, ETL-C, CE, UL or other accredited testing facilities, 8. Performance - Unit must have Independent performance testing provided by GSEE. MANUFACTURER The diffused air, xration system shall be Air Flo 3 _ n 5 temN _ as raw uFaSN red Ys by OtterDine Barebo Irw,3840 MAIN ROAD EAST, Emmws, PA 19040. USA PH. Cs 0)116S601 A. or approved equal For approved equal status supplier shall Dreside 9 the following information to the project designer, within 10 days of the bid opening date, for written approval. WARRANTY: The aefati0115 tom shall include at" year warranty an the air compressor, air diffuser and i or pill... SVSTFN Coon saor(al; Pas) red a Discs pot lad a Dlzc Vd Ans a systemV pM M3421 2 3 I 4 I a 1 2 I I S,4.7ft0 230123AD 220/2.USd A13131 3 an14, Arst13 4 2 2 AP3-122 4 APs241 4 6 f 2 a a 4 6 1 4 ttay6[ 23ams 7AG ZZOps.vso AF3 261 6 A61i61 B afa 242 2 4 All-l32 APs242 6 f AP3.262 I2 vnderwater tubing. AF3-242; P/N 03-3242 OR APPROVED EQUAL H LOW Ax M 3 terminate AY hwam sperlawa,a I Page 2 of a SECTION 4: TYPICAL DETAILS LnweR sxELc WeTLJJn L Via a VJfrLhND C81 mFLow mm wRgmv` gIERFLOW uaxrvcePTn -,z• r Rmy ni:FEA mI TABlE 14.2Fd3VDLUhE .DTAete 1 vauue RIawIRenDrlsl aAFery eevcn aEWENrsi HDFI PLUw� � � LANoxAnno POND Aew4Txw ,EPEn TO r_1 WTIC frevCn AMa oP a w 2 REp1,gEAEN,q BJieIV WNCn s[rErvaowTx; ea^�DN PLANVEW NOTE nerenrorAiL.E14e A,iDDCGiGNaPEc NJ ,3CIX-BrIMIC1®wLTANLI SECIRois MR If anti3_2 Y EONDB CEDE CflREHAmN2TLANocrll OVERFLOW To vier FOND NORNNL sAcsTvfasr-rrN CFMMIFL PROTECII m AOWTIC aEr•IU1 ,rl � N� NDRLML PoOL I[%(JI aia.c r �T RERER TO SECMIN 6 FCR Lt MO L2 NCNMNL PQX yOLUIvE - aADDEiANDTVAeoCHwaNELE (71,DN 8Ts>"aOF DePrx8 PROFILE (WITHOUT UPPER SHELF WETLAND) Figure 14.1. Wet Pond fMsign Schematics TT/R. CAL] No. 35791 3/24/21 Zz O O a U CO w � W U) Z a- �B♦ O F i z LU [--I N W 'n M 0 w 0 ZZ w f O U Z O w a w U) w rY m m v Lu N � � L9 z I 01 LLf U' L9 Z Ul Z J J U N 4 co 1 N C] N \N J J U) Uj U Y LIJ VJ LU LU U-I V O N U w n Lu O w x a N 182154 SCALE AS SHOWN SHEET NO. 17 STORMWATER MANAGEMENT FACILITY 'C' DETAIL, SCALE 1"=30' CONTRACTOR SHALL CALL THE COUNTY I NSPECTOR& ENGINEERING DEPARTMENT 24-HOURS BEFORE, O'Ny EFOREANY / / \ \ \ / / / -_ - • s y ` \ \ \ ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BMPs. THIS - ISINCLUSIVEOFWHENTHEUNDERGROUNDDETENTION SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT \ / \ BEFORE STONE BEDDING IS INSTALLED. SEE THIS SHEET FOR SCALED PROFILES OF THE SWM FACILITY, TYP. \ \ \ \ \ PROPOSED UNDERGROUND DETENTION SYSTEM TO ATTENUATE RUNOFF • +�00 ;AUSED FROM\SD-�\MENT. SEET\IS SH T& SHEET zo FOR DE TAILS.__ - \ / 0120" INV. 719.45 _ \ PROPOSED ACCESS w/ STAIRS FOR INSPECTION & 0120" INV. 719.42' \MAINTENANCE, TYP.. ACCESS MH TO BE LOCATED UPSTREAM & RESTRICTIVE STEEL WEIR PLATE, AT LOW POINT, TO \ / DOWNSTREAM FROM RESTRICTIVE WEIR PLATE AND NEAR THE - _ INFLOW POINT AT THE HIGH END OF THE SYSTEM, AS SHOWN. \ \ DRAIN THE SYSTEM. SEE DETAIL ON THIS SHEET. / y 39.00 LF -O 0 5% \- - PROPOSED STIR. C-ioz, A LOWER 018" LOW -FLOW- \ - - OUTFALL CARRYINGTHE TREATMENT VOLUME-.- \, FLOW & SMALLER STORM EVENTS 0120" INV 71986' PROPOSED 61' LONG FLAT LEVEL SPREADER C. LS TO HAVE A 12" DEEP PLUNGE POOL & 6" WIDERIGID LIP. LS TO INCLUDE A VDOT CL. Al RIPRAP - / / ���. \ \ / \\a! PROPOSED ROADWAY &SIDEWALK TO LINING AND A SLOPED 3'(MIN.) VDOT CL AI / \j \ / PROVIDE ACCESS TO SWM FACILITY. RIPRAP LINED EMBANKMENT DOWNSTREAM / / 717.E 3 \ FROM THE RIGID LIP EXTENDING TO THE EXISTING / \ ) 0120" INV. 719.65 GRADE. ALL RIPRAP TO INCLUDE FILTER FABRIC 0-1 O': MAX. �` PROPOSED STIR. C-Jog, AN ELEVATED OiB" HIGH -FLOW UNDERLAYMENTS&BEAMIN.OF18"DEEP. SLOPE= 2% / BYPASS OUTFALL CARRYING LARGER STORM EVENTS(31.511 \ -- STIR �� / OF 018" HDPE @ zo.34%, II=725.92, 10=719.51) S \ 717.4 - v ": 'e /PROPOSED STR. C-107, A 08" LOW -FLOW OUTFALL CARRYING \ \... \/ O // THE TREATMENT VOLUME FLOW TO LEVEL SPREADER C (z.go LF \ 0-35': MAX. / / OF 08"HDPE z.1% 11- 18. 1 10- 18. ) PROPOSED VAR. WIDTH. / /� \ , -7 4 1 -7 35 S / '--SLOPE- 3� I` ° ,�. o .. � .., .. , o . SWM & ACCESS ESMT. \ L TI'6. 5 PROPOSED VDOT STD. CLASS Al RIPRAP LINED OUTLET PROTECTION \ -\ \ ^0h 67 /\ WITH FILTER FABRIC UNDERLAYMENT (L=B', W1=3', Wz 9, D 18) . _ �'718.35- BEGINNING OF LEVEL SPREADER EXISTING 100-YR FLOODPLAIN PER \ \ \ \ / \ \ \ - - \ -717.1- BOTTOM OF LEVEL SPREADER \ \ j HEC-RAS ANALYSISERFORMED \ \ \\ I ii BY COLLINS ENGINEERING IN APRIL 718.1- TOP OF LEVEL SPREADER \ f_ \ 2019, SEE WPO 201900027. 17. 71 / \ \ \ \ 7 7.41 v v v C-1 Y16. 5 V A PROP SED 35 Lx61 W VEGETATED FILTER \ \ \ A STRIP. FILTER STRIP TO BE UNIFORMLY GRADED TO THE SLOPES SHOWN TO \ \ \ \y\ \ o \ - \ ENSURE SHEET FLOW BELOW THE LEVEL SPREADER. CONTRACTOR TO TIE BACK PROPERTY \\ GRADESAT6:1&PREVENTSOIL LINE, TYP. \ \ COMPACTION BY HEAVY EQUIVALENT \ \ WITHINTHE LIMITS OFTHE FILTER STRIP. \ \ \\ SEE SHEET zo FOR ADDITIONAL FILTER \ \� ` 2} STREAM \ \ \ STRIP DETAILS& DESIGN REQUIREMENTS. n / Y BUFFER; TYP� PROPOSED VARIABLE WIDTH SWM &ACCESS ESMT. \ \ \ \ \ \ \ \ \ \ PROPOSED FLAT VDOT CL. Al RIPRAP LINED OUTLET PROTECTION WITH \ \ \ \ \ \ \ \ \ FILTER FABRIC UNDERLAYMENT (L28', W14.5, W2=12.7,D18") -726 STORMWATER MANAGEMENT FACILITY 'D' DETAIL, SCALE 1"=30' CONTRACTOR SHALL CALL THE COUNTY INSPECTOR& ii• \ \ \ \ \ ENGINEERING DEPARTMENT 24-HOURS BEFOREANY I / 0120" INV. 695.74' - - - 71 '.' •. \ \ \ ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BMPs. THIS 1 \.. PROPOSED VARIABLE WIDTH IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION 1 \. \ SS�/M & ACCESS ESMT. 1 to r \ \ \ \ O \ \ SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT / ' e BEFORE STONE BEDDING IS INSTALLED. I 1 \ \ \ \ \ 1 \ / L ` \ PROPOSED ACCESS MH W/ STAIRS FOR INSPECTION & / \ / A L� MAINTENANCE, TYP. ACCESS MH TO BE LOCATED UPSTREAM / P(ROPFnRTY LINE, TYP. i I PROPOSED SWM FACILITY'D'. SEE THIS 0.'6% & DOWNSTREAM FROM RESTRICTIVE WEIR PLATE AND NEAR / L / / / SHEET & SHEET 20 FOR DETAILS. THE HIGH END OFTHE SYSTEM, AS SHOWN. EXISTING 100-YR FLOODPLAIN PER / / ��\) \ �� / HEC-RAS ANALYSIS PERFORMED / \ 0120" INV. 695.53' 1 �� I 1 BY COLLINS ENGINEERING IN APRIL J�h 2019, SEE WPO 201900027) / o al= 0120" INV. 695.8T RESTRICTIVE STEEL WEIR PLATE, AT LOW POINT TO '� DRAIN THE SYSTEM. SEE DETAIL ON THIS SHEET. v I �� ® �M d �ua�pl 10120" INV 695 81' \ \ PROPOSED STR. D-1o1, AN ELEVATED 018"HIGH-FLOW- / BYPASS OUTFALL CARRYING LARGER STORM EVENTS Ipl 0120" INV. 695 60' / / QC)EE THIS SHEET FOR 1 ; - 0120" INV. 695.66" SCALED PROFILES OF. HE SWM FACILITY, TYP. 26.00 LF 0 20"!- // PROPOSED ROADWAY & SIDEWALK TO PROPOSED 42' LONG FLAT LEVEL SPREADER - \ J / / I I PRO PROVIDE ACCESS TO SWM FACILITY. STIR D-102 'D'. LS TO HAVE A 1z" DEEP PLUNGE POOL & \ POSED STIR. D-1o7, A LOWER 0z5" LOW -FLOW OUTFALL / 6" WIDE RIGID LIP. LS TO INCLUDE A VDOT \ j i 1p3 / / / / CARRYING THE TREATMENT VOLUME FLOW & SMALLER STORM / CL. Al RIPRAP LINING AND A SLOPED3(MIN.) S,IRD' / / / / / EVENTS(6.88 LF OF 015 HDPE @3.78%,11 695.47, 10=695.21) / VDOT CL. Al RIPRAP LINED EMBANKMENT / / DOWNSTREAM FROM THE RIGID LIP EXTENDING TO THE EXISTING GRADE. ALL, ' RIPRAPTO INCLUDE FILTER FABRIC UNDERLAYMENTS&BE AMIN. OFz8"DEEP. r 1}O0 - �' l�J STR D-104 _- �- �- - / // / ��j II-...S. _1 s R/D Jos\ QoO 694.3f. 1IT PROPOSED 08 LOW -FLOW OUTFALL CARRYING THE 0-10': MAX. \ / / / TREATMENT VOLUME FLOW TO LEVELSPREADER'D' SLOPE- 2% g2 / (56.go LFOF08"HDPE@o.5o%,11=695.zz, 10-694.83) IIIIIIII \ PROPOSED VDOT STD. CLASS Al RIPRAP LINED OUTLET PROTECTION \ 1 04.2 / / WITH FILTER FABRIC (UNDERLAYMENT L 8', W1=3', Wz=g', D=aB') llll-kl / PROPOSED FLAT VDOT CL. Al RIPRAP LINED \ 1�° / IITI II OUTLET PROTECTION WITH FILTER FABRIC \ \ QO '� / IAV 7 UNDERLAYMENT (MIN. L=9', Wz=6', W2=6', D=18") \ } \ �� 694.83- BEGINNING / / rill= 7�OF LEVEL SPREADER QO / • • 3.95 ��° � / /693.6- BOTTOM OF / 1F 1 LEVEL SPREADER Oo / 0-35': MAX. \ \ / / / / / /w TREAM r-I11. / (O / \ ' \ (C) / / , 694.6- TOP OF SLOPE- 3% / y [ LEVEL SPREADER / BU'FFE P, 1111111 / / PROPOSED 35'Lx42'W VEGETATED FILTER 693.95 / / 4 :5 STRIP. FILTER STRIP OBEU \ \ QO/ 6 i GRADED TO THE SLOPES SHOWNSHOWN TOO -- ENSURE SHEET FLOW BELOW THE LEVEL / SPREADER. CONTRACTOR TO TIE BACK PROPOSED 100-YR FLOODPLAIN PER HEC-RAS GRADES AT 6:1&PREVENT SOIL \, ` ( / / / -`ANALYSIS PERFORMED BY COLLINS ENGINEERING \ \ II=11 1 \ / COMPACTION BY HEAVY EQUIVALENT / \ / / ;�IN APRIL 2019, SEE WPO 201900027) WITHIN THE LIMITS OF THE FILTER STRIP. SEE SHEET zo FOR ADDITIONAL FILTER ` STRIP DETAILS & DESIGN REQUIREMENTS., / e.• / / / / / / III \ \ \ \ \ E PROPOSED 0120" CMP UNDER DETENTION SYSTEM AT o.5o%(F 18" OF COVER RECUR 10-yr PEAK WSE= 2-yr PEAK WSE= 1-yr PEAK WSE= PROPOSED STIR. C-zog, A HIGH -FLOW BYPASS OL LARGER STORM EVENT' HDPE @ 20.34%, 11= PROPOS OUTFJ FLOW & SA PROP( THE TREA 745 745 740 740 XISTING GRADE 735 735 \ \ PROPOSED iROUND GRAD 11NIMUM _D, TYP.) \ 730 730 PROPOSED WEIR PLATE. SEE THIS SHEET& SHEET2c FOR ETAJLS. \ 729.98 726.78 725.96 \ VDOT 4 H-1 725 RIM=72 .zo 725 ROPOS D FLAT DOT CL.Al RIPRAP J ELEVATED 018" \ LINED UTLETPROTECTIC NWITH TFALL CARRYING \� STR C-102 FILTER FABRIC UNDERLAYMENT (31.51 LF OF 018" VD T MH-z \ (L=28', W1=4.5', 2=12.1, =18") 725.92, 10=719.51) RIM 7zy.10 \ 720 719.42 \ 719.40 Q :D STIR. C-1o1, A LOWER 018'. LOW -FLOW ,LL CARRYING THE TREATMENT VOLUME IALLER STORM EVENTS (33.4o LF OF 018 HDPE @ 2.66%, II 71g.40, 10 718.5i) 715 ,SED STIR. C 1o7, A 08 LOW FLOW OUTFALL CARRYING / \ WENT VOLUME FLOW TO LEVEL SPREADER'C' (z.go LF \ OF 08" HDPE dal 2.1%, 11=718.4l, 10=718.3S) \ PROP SED STR C-103, A 018" HI H-FLOW BYPAS 3 OUTFA L (59.72 L F OF 0z8' HDPE dal 018" HIGH -FLOW BYPA S 710 4 49%. 1=719.41, 0=716.67 OUTF LL WITH VDOT E -1 71 0 8 .6z LF OF H PE % 11=716.57,1 =712.20) J J L0 (N L0 �t 0 Ln ^ 0) r7 ww � 00 N N N 00 I� r^ r^ r 04 r n W ILL PROFILE SCALES 1"=5' (V) 1'=50'(H) 0+50 1+00 1+50 2+00 2+50 3+00 SWM FACILITY C SECTION VEGETATED FILTER STRIP & LEVEL SPREADER REQUIREMENTS MAINTENANCE INSPECTIONS: ANNUAL INSPECTIONS SHALL BE CONDUCTED IN THE NON -GROWING SEASON DURING THE FALL AND WINTER MONTHS. INSPECTIONS SHALLTRIGGER 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 TW ICE 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 A MINIMUM: 1. 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. S. 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. 710 S FIR. D-1o, 705 RVDOT MH- 1 =7o6.S1 PROPOSE RADE PROPO SED STIR. D-103, AN 018" HI H-FLON BYPASS OUTFALL (118.6g LF OF 01 ' HDPE 700 @ 2.87%, 11=695.78, 10=692.3 ) PROPOSED STIR. -105, AN 18" STIR D-1 4 HIGH-F OWBYP SSOUTF ILL VDOTM -1 W/ VDO ES-1(13.67 LF OF 18" RIM=695 00 HDPE Qa 1.o0 , 11=692.1 , 10=6gz 03) 695 m PROPOSED FLAT VDOT C. Al RIPRAP LINED nI ITI T DDnTC TIlIAI \A/ TU CII TC CA QDIr PROPOSED STIR. D-1oz, AN ELEVATED 018" HIGH -FLOW OUTFALL CARRYING LARGER STORM EVENTS (6.6o LF OF 018" 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 0120" CMP UNDERGROUND DETENTION SYSTEM @ 0.50%. 10-yr PEAK WSE=705.28 2-yr PEAK WSE=704.16 1-yr PEAK WSE=703.48 NG .• , PROPOSED STIR. D-107, A LOWER 015" LOW -FLOW OUTFALL CARRYING THE TREATMENT VOLUME FLOW & SMALLER STORM EVENTS (6.88 LF OF 015" HDPE @ 3.78%, 11=695.47, 10=695.21) PROPOSED 08" LOW -FLOW OUTFALL CARRYING THE TREATMENT VOLUME FLOW TO LEVEL SPREADER'D' (56.90 LF OF 08" HDPE @ o.5o%, 11=695.zz, 10=694.83) > > UNDERLAYMEN (MIN. L=g', Wz=6' Wz=6'D=18") , J UJ O O^ 1-'rD ) 0. 00 W W 00 0) t] O m 0)m m 0) 00 D co co co (0 (D (0 (0 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 0120" WEIR PLATE'C' DETAIL NOTE: SCALE:1"=5' WEIR PLATE TO BE SECURELY BOLTED, OR SIMILARLY FASTENED, TO THE DETENTION SYSTEM. 9.54' ELEV.=729.42' (TOP OF PIPE; OVERFLOW WEIR IS HYDRAULICALLY EQUIVALENTTO AN ORIFICE WITH AN APPROX. DIAMETER OF 026.53'. ELEV.=725.92' INSTALL TRASH RACKS ON ALL ORIFICES, TYP. SEE THIS SHEET REINFORCED 12 GA. FOR DETAIL, OR EQUIVALENT. STEEL PLATE ELEV.=719.42' (BOTTOM OF F MANUFACTURE / INSTALL ONE (1) 05" LOW -FLOW ORIFICE IN THE STEEL WEIR PLATE AT THE 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 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) IS 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: 1. ENSURE SEDIMENT ACCUMULATION DOES NOT OCCUR WITHIN THE PIPE SYSTEM. 2. INSPECTTHE CONDITION OF STORMWATER INLETS TO THE PIPE SYSTEM FOR MATERIAL DAMAGE. 3. INSPECTTHE 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. 6. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION. 7. INSPECTTHE ACCESS MANHOLES TO ENSURE THEY CAN BE OPENED AND OPERATED. 8. REPAIRAND 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 OF THE 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. AT THE TIME OF THE PIPE INSTALLATION. 7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING BACKFILL & FILL OVER THE SYSTEM. 8. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) 0120" WEIR PLATE'D' DETAIL NOTE: WEIR PLATE TO BE SECURELY BOLTED, OR SIMILARLY FASTENED, TO THE DETENTION SYSTEM. OVERFLOW WEIR IS HYDRAULICALLY EQUIVALENTTO AN ORIFICE WITH AN APPROX. DIAMETER OF 022.64" INSTALL TRASH RACKS ON ALL ORIFICES, TYP. SEE THIS SHEET FOR DETAIL, OR EQUIVALENT. SCALE: i"=5' 8.00' 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) ELEV ELEV NFORCED 12 GA. STEEL PLATE ELEV.=6gS.So' TT/R. C>1LLINSZ No. 35791 ,a 3/24/21 Z z O Oa m V/ w � U J Z O .a-, F ` U) z W ce v I Lu U) JLu J C] C] N N 00 m C1 w i Q i C1 F z w O z Z O K w CI � w to w ce U w a Lu 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 INSTALLTHE 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. S. 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 GREATTHAT 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, 1250 STREET, NW, SUITE SOO, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFYTHE 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. 1O.ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLYTO 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: ROOTBALL AND 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: L. THE CONTRACTOR SHALL USE THE WET POND AS AN E&S 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 LOWERTHAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTEDTO PREVENT DISCHARGE OFTURBID 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 Spec canons Property Test Method Unit Specification Permeability ASTM D-2434 cmisec 1 x 10-6 Plasticity Index of Clay ASTM D-423/424 % Not less than 15 Li(Iuid Limit of Clay ASTM D-2216 % Not less than 30 Clay Particles Passing ASTM D-422 % Not less than 30 r_ av Com ction ASTM D-2216 % 95% of standard proctly dart ziource: Virginia normal uer management Hamel" jivyly) 9. EXCAVATION AND GRADING TO THE APPROPRIATE ELEVATIONS AND DESIRED CONTOURS SHALL BE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OFTHEPOND. 1O.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 SHALLTHEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. 14. ALL CONSTRUCTION SHALL ADHERE TO THE VI RGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN SPECIFICATION NUMBER 14. FACILITY MAINTENANCE: MAINTENANCE OF THE WET POND(S) IS 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. B. 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 Frequmcy Maintenance hems Frequency • Mowing - twiceayear Quarterly or after major storms • Remove debris and blockages (,I inch of rainfall) • Repair undercut, eroded, and bare soil areas • Mowing Twice a year • Shoreline cleanup to remove trash, debris and floatables • A full maintenance inspection Annually • Open up the riser to access and test the valves • Repair broken mechanical components, T needed One time -during the • Pond buffer and aquatic bench reinforcement plantings secorilar followiria construction • Filrebay Sediment Removal Every 5 to 7 years • Repair Dyes, the riser and slpIW2y, as needed From 5025 years FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICALTO 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&S 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(S). 6. PLANTING AND VEGETATIVE STABILIZATION PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) COUNTY OF ALBEMARLE Department of Community Development ,+ Construction Record Drawings (As -built) for VSMP The following is a fist of information required on construction record drawings for stormwater 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 seal 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 items 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: 1. 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 maybe 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 structures, culvert/pipe size, weirs, materials, inlets orend treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. p n, g P g 8. Computations: For significant deviations from design, provide sealed computations verifying that tic as -built condition is equivalent or better than design. g 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 - biofilter 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 required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. s 1/2" sine plated hook attached with 3/8" farlener (DO 2-1.'B' diahOICF Isometric pipI/4" HOPE plate (optional) e culvert c '�leaZ HDPR structural plwill- 0 2-1/1/B" holes and 1/1/4a" plate OO manufactured by Plo.uc Solutions Inc. or equal 000 0000 �c ,x..> shown with ophorel plate xy4,ff R,!'i� HDPF. At ucl. •.rrsl plastic with 2-1/8" holes and 1/4- plate Section manufactured by PlesUc Solutions Inc. or cquol 5/8" din he 0 0 o o 00 a 0 single BAP Elevation ,rif n c PLASTIC ^v DFRRi� CAGE G, B P.O Pnx '7 B SOLIMONS MinMMer 1'A 221504 INC. 7- 677 87 - 6727 m.pledie-mlulinxam SECTION A-9: TYPICAL GRAPHICAL DET.AELS Homogeneous fill / r---------� \� ' 4' min I Cut off trench-4' below suitable material Solvmck L--_--------� TYPICAL HOMOGENEOUS EMBANKMENT Lf-LCoofib� r Perforated collector around sfci s FoundaEon drain FOUNDATION DRAIN Dxmney drain / Send, grovel or rod /dram outlet R9;J, t9t: t:4Trcgsilion filter CHIMNEY DRAIN Transition fill Rock or grovel \Blanket drain BLANKET DRAIN Rock or gravel drain Tronsition flier TOE DRAIN EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE's SOILS, A SITE VISIT, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQ APPENDIX 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 A 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 BE STABILIZED WITH ECA 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. COMPACTED 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. VA"P-DLO STORMWATER DESIGN SPECIFICATION NO. 2 SHEET FLOW TO FILTER OR OPEN SPACE KEY LEVEL SPREADER nrM EXISTING GRADE RIPRAP PWN(3E POOL _ -. RIPPIAP APRON 6" X 6" TREATED TIMBERS OR CONCRETE LIP ( f LENGTH OF LEVEL SPREADER J.�os LIP TOBEBASEDON DESIGN FLOW AND ALLOWABLE VELOCETY 1 TOP OF LEVEL SPREADER _ 3HIALL BE FLAT u 1-3 IN. COURSE REGATE OR OTHER LINING AS DESIGNED FOR STABILITY PLAN VIEW DIMENSION BASED ON 5%I2c: - __- _ -TFD DESIGN DISCHARGE FLIER ___ Ir __ OPIR1cF ___ ___ - 1 LkW 2' MIN THAN ah 3E MIN 10 MIN a MIN u 12' A yI IN. DEPTH BASED O j I-y7 REQUIRED STONE SIZE - I Ij-i I II I I-1 I lit-1 I I 1-III-)I I II SECTION A -A Figure 14: Level Spreader: Pipe or Channel Flow to Filter Strip or FreserweA Conserved Open Space LEVEL SPREADER NOTES: 1. FIRST 10'FROM LEVEL SPREADER LIP MUST BE 2%OR LESS, 2. TIE BACK ENDS OF LEVELSPREADER INTO THE SLOPE TO AVOID SCOURING. 3. CONTRACTOR SHALL NOTIFY COLLINS ENGINEERING A MINIMUM OF i 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(s). 4. CONTRACTOR SHALL USE A GEOTEXTILE FILTER FABRIC UNDERLAYMENT BELOW THE PROPOSED LEVEL SPREADER STONE. THE GEOTEXTILE FILTER FABRIC SHALL BETENSAR TX- TRIANGULAR GRID OR EQUIVALENT. s , 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 DNR, 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 ondin may occur behind the permeable berm shall be able to withstand both wet and dry periods. The P rYP 9 Y P r Y 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 (Acer Rubrum) and Sweetgum (Liquidambar Styraciflua). Table 2.4. Vegetated Fiher Strip Materials Specifications Material Specification Ouantity Pea Gravel (#8 or ASTh1 equivalent) or Diaphragm should be 2 feet wide, 1 Gravel where Steep (6% +) use clean bank -run foot deep, and at least 2 inches Diaphragm VDOT #k57 or ASTM equivalent (1-inch below the edge of pavement. maximum). Permeable 40% excavated soil, 40% sand, and 20% pea gravel to serve as the media for the Berm berm. Geotextile material appropriately selected for placement under rip rap or gravel to Filter Fabric effectively separate the stone from the ground 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 alternate 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 Erosion Control matting EC-3). Matting If existing topsoil is inadequate to support dense turf 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 0 content of at least 2 /9 be used. Topsoil be uniform) distributed and shall p shim y lightly compacted to a minimum depth of 6 to 8 inches Compost shell 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. StormRaxTN ROUND SERIES TRASH RACK CONCRETE MANHOLE STANDARD BO INCH RACK SHOWN DIMENSIONS IN INCHES (OR EQUIVALENT) A T PLAN SIDE VIEW StormitaxTM Round Series for Concrete Manhole r•rtma DknA Dim DI•C Min ID 11160D AS74 17N 14% a 34 30 RS-36 21 14 40% 36 43 RS49 27 18 34 49 57 RS-60 2711 is% I film 6o 70 xove envucruswl vwnc•r PIA9Tx:9ClUiIW9. ING ISOMETRIC CONCRETE STRUCTURE DIMENSIONS INSIDE STRUCTURE DIMENSION OUTSIDE STRUCTURE DIMENSION AVAILABLE OPTIONS CROSS BRACING FOR OVERHANG HDPF ANTI -VORTEX PLATE 1 7- TT/R. Ct?Ll No. 35791 3/24/21 Zz O O a U on w t=i1 J Z .a. O 1-- U) z LU " N 00 '1 M 0 W 0 Fri z LU f O U Z z O K w a 0 w U) > w of o r! QO\i O\i 7 N L LLf U' J J 0 4_ r ti CO CO N 4 co 1 N O rn N N LU J J U) LU J Q U 1 Y LLJ U) W I/Y�^ (J J IY Q CD CD z <^ H1 H� W Q Z z W Uj LL^ V w w a � 182154 Prude Solulfons, Inc. CUSTOMER DAIS SCALE `a PO Sat4366,WndieVar,VA1760f OR11VMP. AS SHOWN Im P&,c a e W, winchesm, VA 22603 ;M 877.3727 phone PRNEat IPPOIY: SHEET NO. IS" M-2219 im hdp//. pli do-soYdluumn, DETAIL 19 Figure A -la. Homogeneous Embankments w/Seepage Controls HUGGER SINGLE BAR, BAND FLAT GASKET BOLT AND STRAP (SBBS) FLAT GASKET 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. 8. 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 LIMITS OF (IF REQUIRED) REQUIRED BACKFILL 120" TYP. 36" TYP. 36" SEE TYPICAL BACKFILL DETAIL NOTES TYPICAL SECTION VIEW NOT TO SCALE 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 PERIOD OF TIME. PLEASE REFER TO THE 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): PIPEs 12": D + 16" PIPE > 12": 1.51D + 12" 1a MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12.6.6.2): PIPE < 24": 3.0D PIPE 24"-144 D+4'0" 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 DIAJ2 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 TEMPORARY COVER FOR CONSTRUCTION LOADS HEIGHT OF COVER CONSTRUCTION LOADS FINISHED GRADE FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER 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 GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC. AXLE LOADS PIPE SPAN, INCHES (Wps) 18-50 50-75 75-110 110-150 MINIMUM COVER (FT) 2.0 2.5 3.0 3.0 12-42 48-72 3.0 3.0 3.5 4.0 78A20 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 36"0 MAX HHS-25 ACCESS CASTING„ Kj,TH Q.�, WITH GRADE RINGS AS REQUIRED, TO REINFORCING TABLE '" BE PROVIDED AND INSTALLED BY "BEARING O CONTRACTOR. MAYBE TOP MOUNTED 0 CMP � l CMP (AS SHOWN) OR RECESSED. A B0 REINFORCING PRESSURE PROTECTION o RISER (PSF) SCOTT R. LLINS� SLAB RIM/FINISHED ----_ - O a GRADE _ __-- __� VARIES Lf U No. 35791 ,a 24" 4'0 26" #5 @ 10- OCEW 2,540 4'x4' #5 @ 10- OCEW 1,900 "0,p 3 /24�21 b' � _- d a ��r_ a_ -.fir.: - a 4'-6'0 #5 @ 10" OCEW 2,260 `SSIONAL V, 30" 4'-0" x 4'-6" 32" #5 @ 9" OCEW 1,670 5'0 #5 @ 9" OCEW 2,060 GASKET MATERIAL 0 CMP RISER ¢ 36" 5' x 5' 38" #5 @ 8" OCEW 1,500 SUFFICIENT TO PREVENT a ^ z SLAB FROM BEARING ON 0 42. 6-6"0 #5 @ 8" OCEW 1,490 RISER TO BE PROVIDED BY a 0)5'-6" x 5'-6" #5 @ 8" OCEW 1,370 w CONTRACTOR. 013 11" TYP. g�0 #5 @ 7" OCEW 1,210 z SECTION VIEW 48" 6'x& S0" #5@7"OCEW 1,270 z w ACCESS CASTING NOT SUPPLIED BY CONTECH c: 0 A /�°04,9 �B #4 DIAGONAL TRIM I / BAR (TYP. 4 PLACES), __ SEE NOTE 7. t= r- /1 L�/ <\ I/i I tiO�Q 111 /. r- �-_H ;� /Ty1I� I \ // �/ OPENING IN __ _ I1L_ �� t 1TI___ PROTECTION --- SLAB FOR i I ACCESS -----I� 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 OF AASHTO M274 OR ASTM A929. 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 DETENTION SYSTEM STRUCTURES, INCLUSIVE 2y2" OF THE BYPASS STRUCTURES. �1'-4"� S. 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. 3/a (#6) REBAR CAN BE CUT FLUSH - a ASTM A36 9. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TO OUTSIDE OF RAIL TEST -DIG AT THE EXISTING INLETS & OUTFALLS TO (BAR LENGTH =16%y)ORBAR CAN 4j CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED EXTEND BEYOND RAILY2"± ~ FABRICATION TOLERANCE: ±y4" GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT _ , FLAT BAR AND REBAR: MILL COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE TOLERANCE APPLIES HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING 3/8" TYp AND CONSTRUCTION. 10. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926). 12" TYP• 3/^ HOLE w/Y4" REBAR RUNG, 11. CONTRACTOR SHALL PROVIDE ADEQUATE STONE BACKFILL CENTER TO CENTER WELD WELD REBAR TO RUNG ON FOR THE UNDERGROUND DETENTION SYSTEM PIPES IN RUNG SPACING `° OUTSIDEOFSTEELRAIL ACCORDANCE WITH THE MANUFACTURER's REQUIREMENTS. - o 2Y2" x %" FLAT BAR SIDE RAIL 811 2'-6" PIPE 0 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 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 2yxY2,5x1,3x1,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 #4 DIAGONAL TRIM BAR (TYP. 4 PLACES), - SEE NOTE 7. 2" COVER (TYP) �l I OPENING IN PROTECTION SLAB FOR ACESS 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 *3" FROM TOP OF LADDER RAIL TO RISER JOINT O LADDER RAILS AND RUNGS (2)Y4" FILLET WELDS 1" LONG ATTACHMENT ANC L5" x 3" xy" x 16" LONG AT V-0" MINIMUM OF 4 ANGLES F SPACING. LONG LEG TO LADDER SECTION, (2 EACH SIDE PROJECT OUT. WELD TOP LADDER) 6' MAX. SPACI AND BOTTOM OF 3" LEG TO EACH VERTICAL MAX, CORRUGATION CREST (THESE ANGLES SHOULD BE USED a_ FOR LARGER DIAMETER IL 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 22/3' x )2" CORRUGATIONS (4)Y6" FILLET WELDS FROM EACH ANGLE TO CORRUGATION CREST (2 WELD EACH SIDE) L3"x3"xi6" 5Y" LONG A 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));6" FILLET WELDS FROM EACH ANGLE CORRUGATION CREST (2 WELDS EACH SIDE) (4) L3" x 3" x 5Y2" LONG (2)Y4" FILLET WELDS 1" LONG FROM EACH ANGLE TO LADDER RAIL LADDER RAILS AND RUNGS I�Ad►1 -_ _-A (4)Y6" FILLET WELDS FROM EACH ANGLE TO CORRUGATION CREST (2 WELDS EACH SIDE) L3" x 3" x 3/j6" Sy" LONG Afty/rlrel\ LADDER AND RUI Vl Z z O l ` J < , c O U U) w m � c 17 in � J Isle' z O E- in z L z I W ` L I I~ N W � M I � 1 w Q i o I t F w i 2: i 0 I y I F 1 Z I M : o 1 � I w a i w in w I � w N N N m m v CI r4 co i LLI Q g CD CD N I --I Q LLJ (n Lu 0 Q H4 Q �'W zz V / Q � Lu z z uj O LU z �LL^' LLJ V Lu 1 z V / uj Lu J o w x a LO JOB NO. 182154 SCALE 4S SHOWN SHEET NO. 20 PLANTING SCHEME FOR EVERY 400sf (OR 20'x20' 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 / / \ \ / \� �M \TH Qr, 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"- 11" 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) SMALL NATIVE SHRUBS OR WOODY GROUNDCOVER AT 15"-18" CLEARING THE TRAIL. HOWEVER THE MOWING & BUSH HOGGING SHALL BE LIMITED TO A MAXIMUM OF FOUR TIMES A YEAR. THE \ ✓ CONTRACTOR SHALL CONDUCT THE ANNUAL INSPECTION FOLLOWING THE FIRST YEAR THE PROJECT IS COMPLETED, AND THE OWNER i/ O SCOTT R. LLINS!Z THE LANDWARD 50% OF THE BUFFER: SHALL CONDUCT THE ANNUAL INSPECTIONS THEREAFTER. \ O0 No. 35791 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: J ,p Q. 3/24/21 CONTAINER GROWN NATIVE SEEDLING TUBES AT 700 PER ACRE, APPROXIMATELY 5' O.C. THE CONTRACTOR SHALL SCHEDULE A MEETING ONSITE WITH THE COUNTY ENGINEER AND THE OWNER PRIOR TO ANY MITIGATION \ ,p (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 — — _ l �\ �, JJ ���'S G1 rONAL E 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) C7 / \ / \ / \\ / \\ z ILEX X AQUIPERNYI "DRAGON LADY" OR "DRAGON LADY" HOLLY (LARGE EVERGREEN) \ / �' -�\�// - \'`� \ w ACER PALMATUM OR JAPANESE MAPLE (UNDERSTORY TREE) / , \� \ i / O �/� - w MYRICA CERIFERA & CVS OR SOUTHERN WAX MYRTLE (UNDERSTORY EVERGREEN) O O \ /\ \ / / —\ \�/�✓ _ /' // / // /�/ I z _ BUXUS SEMPERVIRENS & CVS OR AMERICAN BOXWOOD LARGE SHRUB) 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 / / \ / �' / O 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. \ / — — / _ / I /// > 00 Lu STREAM BUFFER MITIGATION NOTES: THE EXISTING STREAM BUFFER ON -SITE IS HEAVILY WOODED, SO TRADITIONAL MITIGATION (A p PLANTING TO THE ACCOMPLISHED. PROPOSES THE FOLLOWING MEASURES TO �/ I (\ \ / / / /\ \ \ , / / / / / / .. yr/ / - J I _ \ a MITIGATE IMPACTS EXISTING STREAM BUFFER: 1. THE STREAM BUFFER SHALL BE RESTORED IN AREAS ALONG POWELLS CREEK WHERE TREE / / \ \ I \ / / /�. �/' \ / / / / // /V, ZO a ti COVER IS MORE SPARSE OR WHERE INVASIVE SPECIES HAVE OVERTAKEN AREAS. THE TOTAL I MAXIMUM MITIGATION PLANTING AREA FOR THIS DEVELOPMENT IS 47,658sf (EQUAL TO 2x THE / / I \ I I / // / �l / l /oi5 z PROPOSED IMPACTS). MITIGATION PLANTINGS SHALL FIRST OCCUR ONSITE IN THE STREAM / \ \ 0 / / / / , i — — — _ _ / / � '. ;, \ I / \ \ " \ W g N � BUFFER WHERE VEGETATION IS MORE SPARSE. IF A TOTAL PLANTING AREA OF 47,658sf CAN `� \ _ \ \ \ n / U m rn NOT BE LOCATED WITHIN THE SITE's STREAM BUFFER WHERE AREAS ARE LESS VEGETATED, /' I I / / / / / / / i' / 1 \ / �,\\�\ w Ln N O �(, y f � THEN THE CONTRACTOR SHALL HIRE AN ARBORIST TO PROVIDE A REPORT DEPICTING THE / — ' / ' / J / / a"' ` '^+ �` \ p ,�j >U PRESENCE, IF ANY, OF INVASIVE SPECIES WITHIN THE SITE's STREAM BUFFER. THE ARBORIST's / I / \ / / / / / /' // / �� \\ / Z ,a., "' r REPORT SHALL INCLUDE A PLAN FOR THE REMOVAL OF THE INVASIVE SPECIES AND FOR THE / / \ / i / / / / / I \ /, `, '� . •/\\\� O w AREAS' REPLANTING. THE REPLANTING OF THESE AREAS SHALL BE IN ACCORDANCE WITH THE \ / \ / / / / / �, - - 7 /// /• 1 ; J \� \ / H- O 400sf MITIGATION PLANTING SCHEME SHOWN ON THIS SHEET. THE TOTAL MITIGATION _ _.. J _ / p u PLANTINGS & REPLANTINGS AREAS SHALL NOT BE REQUIRED TO EXCEED 47,658sf. ( / - - _ - a i\ Lu to ww \ 2. THE CORRECTIVE MEASURES DESCRIBED ABOVE WILL RESULT IN PLANTINGS THROUGHOUT ' - / \ _ �-,/ / / / / _' -� / VA , ••„ - '\\ THE ONSITE POWELLS CREEK STREAM BUFFER AND WILL MITIGATE THE IMPACTS FROM THE w \ PROPOSED CONSTRUCTION. / / / / _ - ' / / f / J \ / / \ 3. A BOND SHALL BE PROVIDED PRIOR TO CONSTRUCTION ACCOUNTING FOR THE COST OF , / - - _ / / / ' i ' \ \ \ _ i \ '� O > \ REMOVING THE MAXIMUM 47,658sf OF INVASIVE SPECIES AND FOR PROVIDING NEW / _ �. _ / �� % / I \ \ \ / / ` \ �\ V owC MITIGATION PLANTINGS OF THE MAXIMUM 47,658sf. IN THE EVENT THE ARBORIST's REPORT / �/ / \ �,} \ �\ \ II� \\\ a IDENTIFIES LESS THAN 47,658sf OF AREA AVAILABLE FOR MITIGATION PLANTINGS / I / // / / / �, / j I I \ \ , it I \ Z REPLANTINGS, THEN THE AREA OF INVASIVE SPECIES REMOVAL AND MITIGATION I / ✓ / �, O REPLANTINGS SHALL BE EQUAL TO THAT OF THE LESSER AREA DETERMINED BY THE ARBORIST I \ / / k _ / / / / / f l / / / I � \ I ® U DUE TO THE STATE OF THE EXISTING HEAVILY FORESTED STREAM BUFFER. / / J �� \ \ / \ / / .� / / \ 11 / Lu 4. THE ONSITE STREAM BUFFER'S MITIGATION SHALL BE COMPLETED PRIOR TO THE FULL RELEASE OF THE MITIGATION BOND. > / "I In CD /rl / W N N N J / / / r. p PROPOSED TRIPLE BOX C�1Ln/ERT / / / v _ — ; : ° _ — / (NOT PART OF THIS PLAN) AT/ / ti POWELLC�REEKCROSSING WITH' HE C ) PROPOSED RAMBLING BROOK L W PROPOSED IMPACTS �, gV "°pOpBp ° e�a°°°° e°° °°e V / , TA- l Ol 2fH ( 2815)R0WP _-BUFFER RESULTING M P 56115-/ — — — \ \ \ \ / \ \ I , / /\\ — FROM THE PROPOSED % / — — — ` \ \, / i y� \ . 00' WP0 \ ✓ �I / N 11 �����1 0 1 V / / o '+ ' / PHASES II & IIIBU ER TYPJ / / v — ,- F # / / p DEVELOPMENT �i` , � � W cy) ' � 1 i-v \ � �i °� Av vim. A \ � A N ap OFPOV�ELt ii� Q v > �CREEK_rY�% G — ° \ W PROPOSED IMPACTS 44 175sf TO THE WPO BUFFER PART OF CONNECTOR ROAD VSMP PLAN - WP0201900027 . °°°° %C a { - (l / / I (i i I MITIGATION FOR THIS AREA's IMPACTS �TM I I II U) ARE COVERED UNDER WP0201900027 W Q 6iEb I ACTS sf) TO THE WP B FF R RESULTING FROM V �� / � / I THE P�& ROPOSED PHASES -IILDEVELOPMENT � S , INNER 50' OF I / /// / > / COU D PR ED / / THE 100' WPO / / // / r �� /—\ // / / BUFFER, TYP. /// / / STEEPS W I--1 W Lu �xW-03�� / // / / \ / / \ / � G \ / ul EXISTING CO CRETE/DAM PRO SEDTO BE \ // / / // /' ? / /I ; , ` REMOVED U E WPb20190 0 HIS gAf�fs / // W V REMOVAL P TOFTE(ON 0 OAD's� //� % / /Ie \� / / / / j WFO TREAM BUFFER / / / v/ \ Q MITIGAT ON LAN & W L HEIL kSTORE�TH W NATIVE TREAM FLO INS. THIS l HELP ESTgRE THE f�IPARIAN AS BEEN ALTERED D E TO TH M / / / / />> — // / j �// A / C NSTRUCTION AND TRAVEL UPANbD ST RESTORING T`HE A PR ES \ / / / / / — J / �/ / / W CURRENTLYI E B THE J COUN NED PR RVED / \ / \ / / / /j^ I / , %'_ i PROPOS IMPACTS 80sf) \ J UJ STEEP I OPES (TYP� — — J / / =i / J Jf TO THE WPQ BUFF RE FROM THE PROP EDP S II O CD /� � / \\\ i i �E� l//J / O \\ \ \ p \ l N �11� f� LOPM 0 EXI G 12' WID / \S / T / COUNTY I1V PRIES ED O D L BOX CULV i / _ / OWE L EK CROSSING / /� / ` ' \ J / / — LI TS OF TYP. 5 STYE OPE I P. ITH EXISTING CLING LANE CREEK, TYP. \ PROPO ED IMPACT (2 0 T 0 \ ��O w /� 1� \ p w j/� TMP SSC d3 BJ J /TMp 56 15 BUFFER RESU I R M TH POSED �NGPEPCN HAS II & JOB No. PROPE LIMITS, 0 0 \ \ \ 182154 SCALE 1 / \ \ 1" = 100' SHEET NO. 21 3-79 I LOT �� I �78 OT / 177 �� l - 1 -s w w w w w w w w LOT — — f SCOTT R. LLINS� U No. 35791 ,a W w w w w w — _ 0p 3/21 �q w � ��124 1 - W - W L E�yG �W - W - W - W - W c� / \ \ LOT LOT 152 PLEASANT GREEN PHASES II & III C / / / / / \ LOT \\ LOT 14 8 151 149 150 PROPERTY LINE, TYP. \ / \ LOT \ \\ 147—M�—M��M M M M M M M M -� _.. M�—M� LOT 146 �.. M_.. M M I LOT 145 I LOT 144 • LOT �43 I '. _ _ems ... • �M 3 LOT 142 I LOT 141 M ---------------- 3 3 ---- I140 LOT 3 LOT 153 LOT 154 LOT 155 x LOT LOT 156 5 —1 163 LOT 1 57 3 LOT LOT �58 3 i LOT LOT LOT 16o 159 a 1 16z 161 16 — — LOT 1 LOT _ I 139 3 i65 \`��� —____ s � LOT 1 LOT 138 III 166 \\ I__---- / LOT �� ��� 3 LOT 1 LOT 1\ % 184 t` I 137 1- I 3 i 1 167 I J \ / / LOT 1 _ I ' I LOT 1 ': � 1 — LOT 1 1 / 183 I I--,•' 3 t\ I 168 / I 136 - I LOT I 3 1 ' I I II I I J LOT \ I I 182 { I W I PROPOSED PUBLIC 1 169 LOT N RIGHT-OF-WAY, TYP. II II II I w w I LOT I I I 181 I/ Lu III 135 3 _ \ 1 �' LOT I _I '1 U H LLJ ❑ LOT _ 1 JD I 1. II PROPOSED LOT 1 _ _ _ I 18o II I Z Z o d J r a < , O U f m G W � In � J 'Z N o o-ai c ` (n Z F r / W c LINE' TYP. --- _ _ — I LOT I 1 3 MATCHLINE B-B, LOT IIII 3 _ I 179 /I / SEE SHEET 22 3 I ME I I ME I IMEMI I 133 — LOTLOT 1 1 LOT LOT I II l — I II LOT 1 II I, 170 171 172 LOT I LOT I \ LOT 1 LOT LOT I I 173 174 175 \ 178 II 3 1 — LOT LOT ��9 �3o I 1 1 z 3 \ �76 I I II 1 — LOT ��7 LOT LOT 128 I II LOT \ 1 1 LOT I / LJT 126 125 I 1 11; 1 177 I I ��4 1 131 \_ I 123 S I _ _ i a S `S PROPOSED SIGHT e -• DISTANCE, TYP. '— — • t M—M— 3-, c 1 M�M—M T M ■■■■■■■■■■■■■■■■■■■■■■ ► ■■■■■■■■■■■■■■■ �— E■■■■■■■■■■■■!■■■■■■■■■■■■■■\� ` �■\■■■■■■■■■■■■■■■■■■■■■■■\0 .� ■■■■■■■■■■■■■■■■�■■Rrrr.� �:W�;Us00LAaulm �.,■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ ■■ii■■■■■■■■■■■ ■!!ItT.G1!13:,i■;IF7:T.#i7■i7i415■■■W_lil/9M*!'JIaRTR13Ri1i72■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ --■ ■���■■■■■■■■■■■■■■■�l■■\. • MMENNENE■■■GLLIYiI�]]�ILMZy�1■IG�ivi�iiY�i�l�ii����\������������� .■■■■■■■■■■■■■■w111!!'!9!■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■I■■■\. �L�����u4�sr�.��■wI■■■■■■■■■■■■■■■■■■■■■■■■■iiiiiiiyL,�����r�r��wr��w���iiii� I■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ . �■■•!R{TR7�11TRil3fd��©C�4L11114■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■13TfCii:11ri7T�E�1�1°Lf:13dY ' ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■t!!!!11rf11RR�rR�`�ii■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■. ••.•. . ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■YGiil�liiY�YliiiiW■■■■■■■■■■\■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ ■1■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ '■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■\��■� 1■■■■■■!■■1■■P7■■r-1■■1--]�I�R_J■■L—Jvva—J��a_�nnr mi 7MLJ1 �'ii<—J■■L—�.■L--�—�-----__-- —_��__ N ca M I C1 i a s o 1 s W 1 � i f 1 0 1 y 1 F I Z 1 7 0 i w . a 0 w i w ce a N M L9 7 ti C`7 1 � N z � Q c+� � J N IO rn � N i N � LL1 / J H1 J U) z 111 L9 < 2: W Lr) W L.L _ Lu Iu U I w Y z U-) I— W LL ul Lu ULU Q JL Q J w Q J CD CD N u U w a Lu JOB NO. 182154 SCALE 1"=30' SHEET NO. 23 C J V `9 I MATCHLINE D-D, \ I SEE SHEET 23 \\ \ TT/R. CI?LLINSZ 35791 ,a 3/24/21 _,4i w -F — r MIR 1 L 1 1 1 1 w — I LLJ s 1 w W F W_ i I = U)— V/ 1 1 1 w'1 Z O S 1 11 f 1 (n = O U c a ca W I � J uu ti r PLEASANT GREEN PHASES II & III �\ \ ? F i PROPERTY LINE TYP. ` 1 S / > ` PROPOSED LOT I S — W LINE TYP. I ( F 1 ^ LOT LIT — 1 O / - I — — '� LOT LOT 122 u3 1 PROPOSED DRAINAGE LOT 120 121 F EASEMENT, TYP. �LOT 119 ' LOT LOT 118 I = i 7 LOT \ i LOT 116 L ; LOT LOT 11LF 115 _ — — \ LOT 112 113 \ 111 � \ \ LOT LOTCD .. W N N N i £ M ~ O\1 O\1 7 \ / LOT LOT log 110 — N\' � r1j M \ \ _ — i 1o8 l0_ S / S LOT 1O� 7 M \ Lu UTILITY \ yvy . " ' `v S EASEMENT, TYP. r \ LOT 94 _ H1 J 95 \ \\ \\\ ♦ I I LOT ® w z LOT I 96 Lu Lu I I 1.0o I LOT (� — LOT 97 O Q Lu ♦ :y,:: / ___ I � i PROPOSED PRIVATE J d` Q LOT 98 RETAINING WALL EASEMENT, TYP. Q W 99 / 2 LL 1Lu Y Z u Lu O ---- w / CD Lu 0 CD E PROPOSED SWM ACCESS & MAINTENANCE / \ EASEMENT ENCOMPASSES PROPOSED LEVEL II / ~ WET POND IN ACCORDANCE WITH VA DEQ / LLI S `�� STORMWATER DESIGN SPECIFICATION No. 14. % / J Q Lu SED 50'LX68'W ONSECD LOCATIRVATON OIONRAREA PER VA DEQ STORMWATER CO DESIGN SPECIFICATION No. 2. CONSERVATION N / AREA IS ENCOMPASSED WITHIN THE PROPOSED SWM ACCESS & MAINTENANCE EASEMENT, TYP. u t-u O W 0) JOB NO. \ \ \ \ PLEASANT GREEN PHASES II & III 182154 ------------- PROPERTY LINE, TYP. SCALE ---- 1"= 30' SHEET NO. - 24 a I 1151 G R=74z.i7 } - _ - - - - - PROPOSED zo' PUBLIC \ �I I I LOT ' \ DRAINAGE EASEMENT I M 180 G ,f2=741 35 / / - - ?rx / z6 M, I - F E=74z.17 ��J 3 / / o0 1 ' / / MCCOB STREET - - - - PROPOSED DRAINAGE SYSTEM 1 I 56' PU / L ISCOTT R. LINS Z ° LOT PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN - - - \2 / QLIC STREET ! 1 O 1 G R=74o;$3 SYSTEM w/1o' PRIVA E EASEMENT (TYP.) \ / PROJECT BOUNDARY (TYP. �'B'��34, No. 35791 I YD-z6 0 % i / \ / �4 '\ 13� �3y / - \ \ ��0 3/24/21 c4 LOT°1/ \ PHASE III r / _ s 78' R=74o}7 %/� \V (FUTURE) // z3 / 'fx / /-- ONAL /� F 3 �» / ROPOSED DRAINAGE SYSTEM So ' LOT / / A� v v - 177 F Ron/° 7 I /I / ' \ --- ry / / z 3 � % w 8 - \\\ \ \\ ✓ PROPOSED 8"HDPE ROOF/FOUNDATION DRAIN /// ?kX A� A �// / // //� - - - - C9 -.� PROPOSED zo' PUBLIC \ SYSTEM w/ 1o' PRIVATE EASEMENT (TYP.) > C °0 7z / , - - z • • - o / DRAINAGE EASEMENT - _ � � /; \ \ q� F // \ / / / � - _ YD-zA r I SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX - - `" • . k. / / 5.3 \ \ \ WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF 736 \ \� - _ 6o LBS. PER ACRE, OR 1 LB PER 1,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.) r 5� '.. ^ / / a FFE_ 31�3x C \ 16B 1 /� $ 0 7 7 \ So r �1 00 3zB i �� I :. ' .. • ,; a. I \ , � • / �C• LOT 5 � .- Pam`" C�•�-�� �n p / PROPOSED zo' PUBLIC \ -° _ \y GAR 73z. / / WON20i��. .1 w m DRAINAGE EASEMENT_ - - - - - 1� - - - \ �, Q F� FFE 733�5 58 / j/ � y z3+Ooj �� � � koO�m / � 174 o m -. ✓ l - '\ M.. 3 -� SMT=]z3.67 O ran m23+50� rs' m ° i " ,p. - - : o Q ti (n ° M ° / LOT 1.- ? " Z PROPOSED zo' PUBLIC = -' i ;..: x �. .,.. GAR- z.1 /- - � - 17 e y i 73 - -PROPOSED 1z" HDPE YARD DRAIN SYSTE M""12+ O <" l < - a r °tf z 6 \ DRAINAGE EASEMENT y goM M11+5o .. w bit STR T 3 z3+oo \ - / FFE=73z.83 59 / w/ 10 P-RIVATE EASEMENT TYP. m x- -Y / LO O oc fCD 4 PUBLI STEEE 1 zz+ -�•`m - - - 6 / _ - ( ) iz+qo T u co C .-,- sp - _ \\ , - \ i' 14 ~ w D N o --- \,. - / -- zz+oo:- 18 ° ,7315 LOT is / /, F E=732.17 60 / oo 57 \\ - z � + l Y z . , �� � .. i / • / f` / GAR=7zo.33 � . �--- - % ~ o ~ p 4 / 3 - 3 zo SMT= zz_ n z w 7 33 / FFE=]21.00 / LOT � LO ,T ao 1 i W p '_ i a, � � } � " . . " " - . • - - - h° / �6i / •/ -% / ,, , 5 W � � w i o / F=73 / / / 56 - - - - - H a M i . • 0 / \ iz6 i•,� ti zoB / / / SMT=7 167 / f" G =iq.6 //' LOT /' w w - - - I I _ . . "e .� � . ' • '. / �� � 2Zx / s o �, � � Y FFE-.67, � � m D GAR= - o. LOT / �' / LOT / / L 74 73 'GAR- 8. Ll ` I GAR= I GAR- 6 j " . / 1 _ / / / / �i - �5 / 1 o w _ 7 _ 73 7 "GAR=737 67 I 737 33\ 7 7 )) " / 1 / FFE= 6z / / V - FFE-73_ I FFE= 8. FI FE=738. 0 736 FFE-737 3 I. • i e " �. " . d . "" " / T s / 73�83 G 55 R= 1 .6 \ \ BSMT 730:831 736 73 33 / / - SMT=]z1.00 / 7 7 7 / I - z oc BSMT= z o _ BSM=7z8.17 =7 7�So , • . • . . • . ` - `. d . " i. `, • / % � � / \ . � � . \ �. � � • " FFE= 8.33; • \ / / 7 9 5 `1 BSMT- z8. o A=73o.�,L6U / LOT LOT 1 LOT 7 z 7 5 (- l J°� ✓ / `/o LOT •.'us` / GA -- fox M y2 ✓ 0.8 / 71�33 _- fo / / �' 1 I \ L v LOT LOT LOT / `/- So . ��' 3 / 546 77 ✓FLu 78 , 7 0 r 76 75 1. . / BS�1T-7z6.i7 / I / / / - ° j LOT FFE- 67 �E✓�� / / I/ \ \ \ p GAR- is 6 / YD 1A ao I� I � � � I ._ ` � • LOT-734�33....,, / � 4 r . / t�ry�h J -' PHASE I I - - 1 '. ` ; . . / - / ' - - FFE=735.0o j, % _;L �7 N / % 5 G w t _ I �Z !,C. 1.. " . ll f 74 BSMT=]2y.1], L/ y < 2oxo / LOT FFE 33, �'jv� • z6 _': % '\ / / LOT A_R-73z:3 - / /\ / . v Yf� a ti� z s o Q / / / / I 1 1 ] - - �. '. .".`' --/ /- - f c. �/ 5 �%�' / LOT / A LOT . . . FF �, y� a / ' / / G 715 0° ' Q vpi 0 / / / 1 J 1 18 - - - - /� -. % • \\ / / BSMT- 3. / /\i /< LOT FFE=lay 67 } \ z8 / / / o ..Cj Lu .. 720 - -- ��- . �' - _`x=+• ' .0 / // - /_i30 % .19 333: Orl d ° \ \ \ \ // / Q O�+ r-4 7 \� -- - - - - - / LOT / \ o - GAR=714.3 _ / \ / / / -"-�_ f i ARC .� / \ /// /PHASE I/// � Lor p N N N SLOPE MIX � ` ` � " " " ' - _ � " . ` . .' . � t " •= �. `'. • ". " �. "���-� - / - ---- � / -�'" -f / \ .. FFE=]i,.00: /�. � I / / / 19 4TE OF - /ISE (TYP.) ' - - - / / - 'V ' v // / / 9 LOT -- ----- 1oo'WPOBUFFER(TYP. �// // \ - - �•". -"� - / S \ x� - T % // LOT l/ /AR �\ / 1 8B \ 29 / // �// / / LOT \\ 20 Ae /�� /\ / /LOT/I 0 ----- --./� �'� �� �/ -- •="=.=-=�'- .i.' .�� � \\� / �\\\ LOT \ � .` / - - _.Y �•1 . `:. "". "LL ." c\ \ / - GP R 7zz \ - - _ - - - - - - - �. L / / / E-7z3.1 / ° \ / \ LOT _ / / /' C'7 --- BS - �� v / 7 j '. �1� LOT // // ®UOoO O OOOoOpOOOpOo _ \ /// / LOT � \ � /// ., \ LOT / / z2 \ \ \ / N . - - - -' / 69 / / AR-719 v / / v v / LOT \ / Ce7 v �0Oo Op QO Op Rio / ,/ / �=7zo.o� 4 v ' ,� Vv� \v 3z ///1 // LOT 23 \\ \V I �/ QO �p Qp aoo' WPO BUFFER (TYP.) \ - - 0 ® O-- o L / 7/% �6 \\J° 8xo�`'. 24 OO � OO too -YEAR FLOODPLAIN (TYP.) � \_ 1 / I \ H � o S OO Op Op Op Cl Op Op // LO / \ \ sy- _ , - U Oo Op O/ - y v / / 68 j/ / v �/jv v v / / 1 N (D/� � DRAINAGE GEYnSTE. < / \\ I uCY)Qonar5n)1;,ROJECTBOUNDARY (TYP.) N SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX y v/ / �Q ��1 �'A / /\ � �� 9>Fj �� A' i�� N WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF v v v v 6o LBS. PER ACRE, OR 1 LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.)) / // LOT Q �b v v v 3 n ` / \ /� �1 Q v J / o PROPOSED 21 PUBLIC 5 \Ln 08 4r /y y^) O ti \ \ <,\ i 1 - _ 1 / 67 .1 v DRAINAGE EASEMENT_ / \ DRAINAGE DESCRIPTIONS v / _ PIPE INFORMATION INLET INFORMATION . ' .. , �v �� �' / o LU i v - STIR. NO. DIA. LENGTH' SLOPE INVERT INVERT Curb SLOT RIM V '� �� iA�11 z ' J \ / (in.) (ft.) (%) IN OUT MATERIAL INLET TYPE Type LENGTH ELEVATION �O \ V / LOTS / A \ W u v 16B DI36 CG-6 6 735.50 �QO A ✓ 66 / O� n� V ✓v '' 1 '^ - ti' 1 \ o \ S 0 h VJ r 16A 15 28.26 0.81 /0 727.50 727.27 RCP O \ 4 ti.. ' i y0 � I -. -�T- \ !- /: w \ - _ 16 DI38 CG-6 10 735.42 \ \ O \ \ \ �y\ �° - ,,1 • i/ _ , o / LU \ EXISTING STREAM \ \ 15 t5 104.11 1.03% 727.17 726.10 RCP \ 0 \ \ \ (��� 7r % �`.,/� / ~ (^ Qo \ \ 14 DI36 CG-6 6 734.00 \ / m - `J , O p v v v LOT I i L9 v Q V A - \ \ \ 15 90.62 1.74°k 726.00 724.42 RCP \ \ V A / 65 08 \\ OOO�DI36 CG-6 8 730.42 O�"'�4"/�QO--0 \ 11 24 93.89 1.68% 719.58 718.00 RCP -� I \ \� ,j' •'���"• \e •" - \OOp \\ 10 DI3B CG-6 10 723.58 9 24 93.37 1.79% 711.50 709.83 RCP - - - \ / • " \. " / 1 ' p \ 8 DI3B CG-6 10 715.58 - / �, •�, r wx �\\ --------------- �_ / \ \ ���n�Qp 7 24 12.54 1.99% 708.00 707.75 RCP �� ",.� ."\" `�" �G Y /"QO 4 MH 713.00 \ \\ / \\ `'� .� •� \ \ A. \\�- - - - - - - - - - - - - - - -�\ \�\ / 3 24 133.85 2.29% 707.00 703.93 RCP --_ O \��� JI / \\ `"\ ••\ \ \ \'"e » \ \ LOT LU Uj \� \' 2 MH - - 705.50 �� \ "\` •"'\ �" 49 / \ 1 24 46.37 1.79% 703.83 703.00 RCP \ O \ _ � � /-.`.. '. . \- -°�•LOT � W �/ \ � � � o � PROPOSED SWM FACILITY & . " • .� / \ Ul ID \ - ` \ \ \ MAINTENANCE EASEMENT \ 1�". \ \ " _ 5o U) 8B DI-3B CG-6 10 715.33 - - \ O� \ \ \ S: '. 0 " -� \ / \ \ \ F_ L.L 8A 15 28.04 0.82% 708.33 708.10 RCP \ \ rnl \ \ \ •"` j ` ` 6` "� " ", , i w , r1 \ PROPOSED UNDERGROUND STORMWATER MANAGEMENT o� = " - ` . " . ,� `" I I \ \ LU V V FACILITY'D' - SEE VSMP PLAN FOR DETAILS \ . `" - ` 1 ": `"� '•\ `. \ \ - - - - - - - - \ \ \ \` \ \ \ \ / (WP0202000053) \ ." . � ." �. " � ' �. ••\ 11� y .... I I \ \ \ \ / / / .... 26 DI36 CG-612 734.25 / \ \ \ \ . • \ • `. , - "'. '. •\, •\ . " \ 'j I / i� \ \ i j . 25 15 29.74 0.50% 727.17 727.02 RCP \ \\ \ ®� \ \ / ."\' " " .• .`\-\•`�•\ \ I I / \ \ \ i'/ i'/ �' .e \ \ \ \ \ 24 M H - - 734.25 \ \ \ \ u \ \ \ 23 15 27.74 0.87% 726.92 726.68 RCP I\ \ \\0 \ / \ 1,e' •\ " ` I - l- \ / i J w 22 DI3B CG-6 8 731.92 / ��\ �'����\ // \ .\'. '� '% I 1 ' O �- ��// / �'/ ��\ C`' \ \ 21 15 147.12 2.77% 726.58 722.50 RCP \ \ \ �0143 \ . "' " ` " -"` . . ' \ - /� ` Uj 20 DI38 CG-6 8 728.42 I \ \ PROPOSED SWM FACILITY & 19 18 22.32 1.03% 721.08 720.85 RCP MAINTENANCE EASEMENT- \ \ \ \ \ \ \ 18 DI-1 - - 729.00 \ i -� I \ \ \ Oj 1 / I . .� , •� • ". S' ` t \ I I I I I \ �\ ' / J \ \ \ \ \ \ 17 18 20.90 0.72% 720.75 720.60 RCP DI3B CG-6 10 730.58 \\ I i \ "•.O 12A N 18 27.78 0.90% 720.50 720.25 RCP S 53 FOR SWM OUTFALL DESIGN V A \ 20B DI-3B CG-6 8 728.50 \V / // �`- / / �m - �`' ' • I I \ \ \ 20A 15 27.68 1.16% 721.50 721.18 RCP u / / � - 4 t _ " I I 1 /Op / __3 / \ \ NOTE: VDOT WILL ONLY MAINTAIN WITHIN DRAINAGE EASEMENTS TO THE = I I z 0 _ YD-1B 12" Yard Drain - - 717.00 I I C \ ° /EXTENT NECESSARY TO PROTECT THE ROADWAY FROM FLOODING OR DAMAGE. \ I I 1 W DO \ - \ \In I \ \ 12 65.80 4.06 /0 714.00 711.33 HDPE APHIC SCAT- vv v / �I 00 v JOB NO. YD-1A 12" Yard Drain 714.33 / \ ao o ao 60 _i zo -\ \ \ 12 47.80 2.09% 711.33 710.33 HDPE YD-1 12" Yard Drain - - 713.33 \ 12 41.30 2.01% 710.33 709.50 HDPE Drainage Easement Chart Pipe No. I Size (inches) Max Depth (feet) Easement Width Required (feet) Easement Width Provided (feet) 3 1 24 1 8.5 1 21.0 21 IIP� / \ 182154 Cc� I m O \ a \ / SCALE 0��� II II I /' Op Oo vim/ Zrr=30' d C 0 U 0 O U 0 0 c 1 inch = 30 ft. / \\ V A \ \no I I /� I V - I AV --/ /l �I I I I / � SHEET NO. \ vv \ \ \ \\ \ \ \ V A V A \ \ / �v / O I I i e 8 /SLOPES STEEPER THAN 3:1 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 6o LBS. PER ACRE OR i LB PER i 000 SF UNLESS SPECIFIED OTHERWISE (TYP.) / EXTENT NECESSARY TO PROTECT THE ROADWAY FROM FLOODING OR DAMAGE. PROPOSED "YARD DRAIN SYSTEM 12 _ w/ 2o' PRIVATE EASEMENT (TYP.) \ \ / _ _ - - - - O SCOTT R. C�LLLINS Z ROJECT BOUNDARY (TYP.) - - - ---- -- No. 35791 � . "" . v . ` w"" ` w.LL " B ew` w w w w T - w / / - ---- ---- _ // �� 3/24/21 .cv4� %�6i' `._ - 7 758 w w w - W - -� o��SSI o LL` I3 . o I Tom,` 4D / - - c\ , • YD •. 75 � �� // YD 4 " - . 160 7 7 u / - t LOT LOT PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN " ` ! / Sz 66B ` a YD-4E LOT 2- 1 152 `SYSTEM w/ io' PRIVATE EASEMENT (TYP.) / c - -�- 75 YO 4A LOT LOT 5 - / 1 o • - 2-48 1-49 r G, ._71� -m z eE �,OT \ TG� mA �.(ri �Q 11 11 ' 1 4b 1;_09' ._, •'. ." .`•"•" "," " ...Y.✓_. �� 'M ', MCCVM.O M --- -- M-`--la16 �ll�- �0 .' +. e.�� �� _/.-' -SCM M M M _ 6PJrRPROPOSEDWALL LOT 1 m 7a J';, v Jv o--m J o ®TNT -i 4 , u-m z +00, PUBLfCSTREET/ --F z + D B CSTR MAINTENANCE EASEMENT LOT 1 T G J °J ° - ,, '- w / / + 25+50 s z4+So - 2 +oo z So Sz34, PG EET' / 45 J o 0 0 �o - / / 144 G m \ o -- I I ` ii M 15 24+00 3 z3+5° ?22 i H / \ LOT T` i J o ° �` , i / \'� 26+pO h f / z+ -- - - 3 / LOT 143 �� YD 4 i o-, \ a 764TW I 142 G m �0 $` io - i \ 0 68 /------- LOT- 6o BW T v ' ` - -_' $ram. _ � u 7 1 1 m mA ems` o ,w -- m a --_- -EX-3- LOL 4 p g o ° 1 \o 56 --. -' --- --_--___-_--- - ,w PROPOSED WALL I' -- nG �� ° 0 7 a ------ ---------66--- / \ \ 140 o _ M - /- --- f z 3 DRAINAGE DESCRIPTIONS -� _ (MAX. HT. = 4) c G* c� �, m Vl -� � -.- � 21 � � � - PIPE INFORMATION INLET INFORMATION �-' ` " � "` +00. °+ PROPOSED 20' PUBLIC J (- z o ¢ - m \o 1 I m / DRAINAGE EASEMENT \ - STIR. NO. DIA. LENGTH` SLOPE INVERT INVERT Curb SLOT RIM 0 o PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN i o a m °" �• G LA E / o MATERIAL INLET TYPE O U w o ;s � ° v? / /f ���"� CLIN EET 27+50 / N - (in.) (ft.) (h) IN OUT Type LENGTH ELEVATION U m C SYSTEM w/ io' PRIVATE EASEMENT (TYP.) I `°o o \ = / pUBLIC STRN / o " o �, - / 3sB DI-3a CG-6 10 745.08 H w 2g+o° �!" PROPOSED 8"HDPE ROOF/FOUNDATION DRAIN 36A a 33.24 1.zo°� 738.00 737so RCP p 76o BW / - o _ o - _T G� SYSTEM w/ 1o' PRIVATE EASEMENT (TYP.) 36 DI-3B CG-6 8 744.75 z0 F /'/ i / �' 2$ 50 - o - - T � m ' 35 15 162.53 4.25% 73T50 730.60 RCP Z U + I D u u a : .I Gl m 7J J J u'1 /' / \ 34B DI-3B CG-6 6 737.42 > > a EXISTING I2"CMP 4 6/ /i +oo : _ w '`1' ' Tr � v u� ^ - / / LU w C CULVERT TO REMAIN 6B �5 \ / 34A . '48,'°.. �'- `o '� 1 N J m A � O w � 15 33 57 1 19% 730 50 730 10 RCP DI 38 CG8 10 737.33 H \ T� m � vl N �•� � � LOT � p 33 62% 730.00 729.77 RCP U p J t 18 36.63 0. _ LOT I - li 47 PROPOSED DRAINAGE SYSTEM 1T c T m A Z �' 1-+ LOT 1 �53m'32B DI-3B CG-6 10 738.25 ./ T 70 v J 54 __-- / 3 -o m •° 32A 24 27.72 0.54% 729.67 729.52 RCP 32 DI-3B CG-6 10 738.25 L> r 6A y9+5 44 LOT OT 1S5 / G - \ - _ CLING LANE 1 J -- e \ 5o' PUBLIC RIW n o+pO .. N 9 } m� LOT i 7 �56 - - - - - ar° 2a.a 2a.o RCP • � X 31 24 174.39 0.52°h 729.42 728.52 RCP C _ 1 - - � 30 DI3B CG_6 8 744.75 C 16 1 v �- �,. - - ,-' - � \ 29 24 47.57 0.8 7 2 7 0 L a -I o 30+50 %FFE- i o 3 '. o o LOT 5 / • � G R 756 i 4 � -- - 757 f LOT 1 8 LOT- 28 MH 746.58 ° j>+oo _ r o j LOT 1 if • t LOT 161 160 159 _ _ - m M / / - - - / \ \ - - 748 - - - 27 2a 11.31 1.50% 727.00 726.83 RCP C Q 755',, 162 YD-zE u R756: _ 164 / t - - _� \ / O 38 0I-1 - - 735.33 C - - - / \ N 37 15 29.70 1.08% 730.92 730.60 RCP LOT 13 t -l.`. i PHASE III // LOT GA =75§67 �O]o AR=755. 7 I --- 75 - (FUTURE) EXISTING 12' CMP I 139 F =757a5 a 5szs 1.7zh 33 1 _FFE=7 165\�'� . S / as MH 757 92 ° CULVERTTO REMAIN / o - - t r < , 6B'` .11\ \ - - - - .7s1.00 7so.00 RCP N 03 I M 1 p Q i p zz w I � 0 U U ZI I z O U LU w a p w vI W 1 � - l / I G = 6.W0- •:" N 1 . R= O 7 O, �. 46.00 1. - - - w N N N 75 0 u- O ]t•.. 754'. LOT 4 S" - 1'D-2D i Z - 43 18 111.16 3.66% 747.17 743.10 RCP MH 756.00 F \ \ \ 10TF=756.6j 6/ot{ 4 j FE=755--3 166 ` t J t t _ - - �. .� - - �\ \` / 42 DI-3B CGs 10 750.92 o N PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN 38 ° PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN'. • `r `- , • '. • " ` " y% • / LOT - } 36 41 18 100.34 3.14% 743.00 739.85 RCP / 6 SYSTEM w/ io' PRIVATE EASEMENT (TYP.) / - - - - 4ub DI-3B cc s s 7azso SYSTEM w/>o' PRIVATE EASEMENT (TYP.) - 1 18 j LOT GAR-754 7'I, 5%1 o AR 753 7-LOT 1 I t 'j ` • " �, `•/" / 4 G R 746 8}7 0 �. o / / � - aoA 2a 27ss t1s°� 73s.75 739.43 RCP / �37 FFE 755 33 - �°/ F 16 `. " `. ` ` YD-zC e w / + - / - - - 4o DI-3B ccr 8 747.50 e E / 1 I _ t t\- ` ^'- y' / LQT ,ryr ✓/ / / / 39 24 54.76 1.52% 739.33 738.50 RCP - 0 Z PROPOSED 12' YARD DRAIN SYSTEM I oo LOT - LOT . " `. 183 / 'H � 3 GAR-753�33 %I , j. - % I�FE IS 16$ � `. PROPOSED 2z' YARD DRAIN SYSTEM• ' ' / F E- 744 I / � , •; / - - asB DI-3C cc� 10 755.zs J(TYP.)+ 4 b 4 - \ •ty 745 Sq o f - ° IZ w w/ io' PRIVATE EASEMENT / / / / � I �36 FFE=754.00 ', ,!; 4z �+ �, I - YD-zG " , / 20' PRIVATE EASEMENT (TYP.) -) • a2. o I LO moo/ �, - - - , - - aaA 15 3a.7o oss� 7aa17 7azs3 RCP � Cy) / ` I48 DI3C CG-6 10 755.25 PROJECT BOUNDARY (TYP. I / - - - LOT o 74 $3 182 GAR=743 5 / / / \ 47 18 99.52 0.56% 747.83 747.27 RCP ¢ w / / J _AR -751.i7 y1 �` • I FFE= 1 C'7 ' � / / / PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN-752_ 1 fll a% 'FFE=75i.83 16g - OT 744 7i 6 l� 3 / / / / \ \ asB Dw 7sz7s (v� `(TYP.)-" " .. `. - 46A 15 33.59 1.49% 751.75 75t25 RCP / / SYSTEM w/io' PRIVATE EASEMENTLOT 6/0 3 1 � -\��� � -• W LL •• . ,-'•e`4' J ` 181 .' ° ` / GAR=742.1 ' h _fJ PROPOSED 1z" YARD DRAIN SYSTEM I 1 � GAR=75i.6] o � - � _� $ ll } `, " I I 7 / + � CNI w/ io' PRIVATE EASEMENT (TYP.) t I 135 FFE=75z33 j - - 74 I• 1• t' YD-zF • I. I I / F E=74z.83 J 3~ ! \ CULVERT-1 ES-1 758.33 M I H - •- _ "\ ` � I LQT I \ 15 1638 1221% 75600 75400 RCP -t / / / / / / YD-3E LOT ,744 18o GAR=741 5° 52B DI-3B CG-6 10 755.17 �1 - / / ❑ / / 7 .00 GAR=751.00 0 o Z - - - _ _ ` -. LL I / / / 7/0 0 �46 t ' I FFE=74z.-7 52A 15 2zs3 0.83% 748.25 748.02 RCP N L.L / / YD-3F 753.00 o.o0 134 FFE 751.67 w ----; 744-33 - $ r 7%L' 3 ' , - - - - - - - 52 DI-3B CG-6 10 755.17Lj 6) PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN 1 QJ ---- -----` _ �. LOT GAR= °. /' `� 51 15 163.33 2.71% 747.92 743.50 RCP 4 m I [� - - 74 83 SYSTEM w/ io' PRIVATE EASEMENT (TYP J \ N F ER 1 00 70 3 zD I PROPOSED 12" YARD DRAIN SYSTEM ^ / 1 0 1 . i / \ 50 DI-3B CG-6 10 749.00 75 33 N I : =75 0 -- 79 FFE 741. co 7/ / 49 15 64.16 1.82% 741A2 740.25 RCP W N _ LOT �� w/1o' PRIVATE EASEMENT (TYP.) � I i / \ �I / LOT LOT I- (I I YD-z6 o° - ---- 749 7 0 a�4_ I f + / / I � 756.. LOT I' I GAR- 6 ,' I 7 LOT L074 � / 74 7 ' \� � / \\ sob DI-3B cca s 7as.00 � �,%� ., t . `' 1 0 ?71 ?7z .LOT I I �` I LOT R o.i LOT _ ^ ° 1 1 LOT / ° �_ _ 1 I 178 /� ° • / \\ 50A 15 27.66 0.83h 741.75 741.52 RCP \ 33 10T �30 13z FFE-75o.33 - �^ a m �� M o ^ 0-^5 176 I jf 7/?�� j` ROPOSEDDRAINAGESYSTEM /\ Z ■' ---- 1z8 9 „ 3 YD-j6 a n m I °8 ---- R=749I.°o S ➢"' D - - ° . ^ �. � I I G I i � � / / \ Y0.2E 12" Yard Drein 746.00 J a -_ LOT LOT I 2� £ n T p'! a `I LOTF E-749 67 __ o C7� Q ¢ o w u �R=739'S0 H� m ➢ � m p � - - w I I LQT II I I 1 '. � � / \ � \ 12 20.30 4.93°h 742.00 741.00 HDPE J ~� J -- o o ----- -- LL - LL - - / \ Y0.2D 12" Cleanout - - 745.25 LO w ° I 177 Ji 3 \ > � 7 1z 125 n c� m A J 1 LL LL ¢ ¢ w „ F 7�oi27 / \ ° 4 p u 11 n v O I 1 1 __ {0 7 LL J LL `- ¢ LL I �C/ N \ 12 44.65 a.72 0 741.00 738.00 HDPE ' 1z n c_ __, R J J w - 3- YD 3 - 4oA- -_ i. o ¢ w I • _ - v 38 \ W o - - t _ :• l '� - \ _ {� l?-� ,�_ _ .�'. •/ //Q / / \ \ YD-2C 12" Yard Drain 742.00 w Irl r w J -- r -- ° YD-jA - - - _ -- -- - - - �, A I � _ m b w - - -- -- -- -- og y - __ ----- --�= i " � - - - --{� _ i ---- -- 'S0` �'LL=- / / ' � - - - -PROPOSED 20' PUBLIC \ � ° _ 4 ,_ _ II - u J �", J o w __- - �- -1 - .... °.. - - __ ` - - - -f i-h--=-_ `�� ` • "` � h ^t/ / \ \ � Y0.2B 15" Yard Drein - - 739.00 �" w �� _ o - - - YD + / DRAINAGE EASEMENT 12 sa.5o ass/° 73a.00 735.50 HDPE W J 00 N ILL � . �r LU � J �.. !, _ _ _. `� -_' ._ _ _. .: ,. _ __ - - _ - _-- � �• O -- _ 55.90 0.89% 735.50 735.00 HDPE v I 12 1. o o _ O �yyl , _ _ _ _'S LL ,`"� `. ` / g / / -73513 \ \ 12 60.30 1.66% 735.00 734.00 HDPE i PROPOSED 8"HDPE ROOF/FOUNDATION DRAIN M Z N I PROPOSED 8' HDPE ROOF/FOUNDATION DRAIN / `• " ' / 34$ \ SYSTEM w/ io' PRIVATE EASEMENT (TYP.) 6 „, 34 If -73 16B \� - - - - 12 31.50 tss°k 73a.00 733.50 HDPE Q SYSTEM w/2o'PRIVATEEASEMENT (TYPJ M oA -F. �LL 6 \ 1 I o _ 3 -- -- _ __ _ Mom- O �7+50 + . - f 2]+00 / ^N` -26+50 \ 30 - . / i I' . - t • ... • ° .. \ \ _5 Y0.2H 12" YaN Drein - - 753.83 C) PROPOSED zo PUBLIC ,x � °- - - - 12 70.40 6.39% 749.83 745.33 HDPE W ------- 2 !_ - 9r26?00 _ Z _\ M M 2A. - - z + M 3 DRAINAGE EASEMENT 0 \ - 5 so__- �, / n.. - �� / -. \' Y0.2G 12"Yard Drein 749.83 5 / 28+5 \ 2 1 . 2 O M n23 12 36.00 13.89% 745.33 740.33 HDPE ___ 5 ✓ _ / '. ��. .. 5+00- / ', I O � f_'. - - \ - 1 inY YD-2F 12" Yard Drein 744.33 w LU A.STO.N'.STR T.- - 6_ \ _ .-.�. , Z I i-/ • •PROPOSED 6' WIDE / 24+00. 13_ . ..2j+00 \ �p - 12 84.85 5.69h 740.33 735.50 HDPE w - -' 1 ° I 1 / I oo• ' REVERSE SLOPE . ` " . I , - .. ... : .' So_ _ � ^° PROPOSED DRAINAGE SYSTEMI ! 4 V a. } - - YD4C 12" Yard Drein 756.00 U) - / � ..' ` L.L / °'' .. Sz 11� ', � � - .-' I • " �. " ` " " • � I PROPOSED SWM FACILITY & - ----- `>°. � 'n:° •' '\ z+0o 12 65.20 0.77°i° 752.00 751.50 HDPE /. -S __ %' 1 M I I f. / LL • e ` I L. _ 'dN'. , 32 `_ YD4B 12" Yard Drein - - 756.00 F -- o I - I MAINTENANCE EASEMENT - o -- - S _ _ • ,. � I I� � \ ! � - ° S 16 12 28.50 0.60% 751.50 751.33 HDPE LJ_I V II GAR_ _-, •7 75 _73_6• •,LL . {L7O44T `-7 ' ) I BS- -7T444_34 7 ,I II - \� -- • \ : �' - "" •�\ ,... ' " , ` "`•-•�'` . ,;'.e •` �' " ff �1o� � vD4A 1z 12" Cleanout - - 756.67 W ,-- _- G_A 75 z1 68.60 0.96% 751.33 750.67 HDPE 756.17 V- yL)- GAR=7=754,17 17R=741. less os1° 7sos7 750.50 HDPE 12" Cleanout 754 $3 =743. R- a oo GAR=757 33 FFE=75633= J / _ LO� , /' I /I I +82 ATA 74 738 a t=�SMT 745.°0 t � r / <:I'BSM =7 331 - - - I GAR=738 7 I I I GAR I I GAR=737 33 I I I GAR=] 67 • •LL . "I � - . ", . ', 2 • / - - 1:^. . I I .LOT FFE-7140.6] - �... 737 7<. �. - I. l• YD4E 12" Yard Drain 757.00 ~ /� �=758.67 ,' I I I FFE=758.0o BSMT=746.50. I _ 1 . 4; I I � - y "73 • 7 6 I I _ ! I�-739�33 I r _ 1FFE-738: 0 736 FFE-737 3 - `. / . •i. • •. f . - ° PR P FA 1LITY I - 8 O OSED SWM C & MT- 12 Sa.ao 1.71 /0 753.00 752.0o HDPE - 6 T=748.17 ' I LOT I 86- I �II \ - .: BS o.8 -759�33 �75 I, ,, 6 _ I µ; , -. I YD-sA 7 4�1 _:.....:.:..LOT I 73 3 I I I BSMT=]z9.5o 'I 736 BS�-- z8z8. Sol -7z8.i71 I=7z7.5o . • `. " `. `. •,". • LL• `. (`. "/. • •. `i - - w t LOT 86 7� I l IIP MA NTENANCE EASEMENT LOT I I 7 ,5_ / \ , . 1 YD4D 12" Yard Drein 75s.00 4T=749-50 PROPOSED WALL - / O Y" „ \ 1 80, 7 z 1 1 I f % • I GA 12 29.95 2.24% 752.00 751.33 HDPE g J PROPOSED>z YARD DRAIN SYSTEM I LOT I I j LOT L'bT LOT LOT 7 J J I 1 (MAX. HT. = 6') f = wl lo' PRIVATE EASEMENT (TYP.) 79 I / / \ I \ / w 88 r -J - I IL I I 70 / I \ 6 - \,• .` .` /.. / = Q J 50-; PROPOSED WALL J { - 7 / I I / 7 728 76 BSwIT 7z YD-3D 12" Yard Drain 752.00 LOT 7 1 I ! --- MAINTENANCE EASEMENT I ' / - r� / C-1oz - - _ /r L -------- I I f \. " . ` �, 12 48.80 4.10% 748.00 746.00 HDPE y1 73 734 PROPOSED WALL I I I j / �. " LOT � . � J � � J. � � \` • Y0.3C 12" Yard Drein 750.00 1..� 8 744 / / / 90�� MAINTE NCEEASEMENT L i I I / f PHASE 11 \ ILL, /74- 12 50.00 2.3a°k 746.00 744.e3 HDPE 730 ___J / .� / _ - - •..732 -. (-_ - - .' I � \ J L _ •.`^ • \ �• lf/ f - Y0.3B 12" Yard Drein - - 746.33 / /--•7�96W ,�..x. •\� \ \ _ _ / f - - `` \ �•\,. `/ 0 12 24.00 2.42°h 744.83 744.25 HDPE N " • T TW _ - _ . �1 ----- - _ ��42j41 / ` ' ••�` �` •' . ` • I `."'� ` " ` I - - --- -1 \\ \ "\ ' PROPOSED WALL `" Y' ` ` T - - / / - \ , �.` \ k\\ YD-3A 12 49.55 1.51% 744.25 743.50 HDPE 12" Cleanout 749.00 __-����.;- LL . \ _ - - � / /�� / -� \ .f\. "" . � f Y0.3 12" Cleanout - - 748.75 PROPOSED WALL \ \ \ \ (MAX. HT. = 4') - - - - - - - - /-/ 720 _ - _ \ \( 12 19.90 2.51% 743.50 743.00 HDPE (MAX. HT. =6) \\"� b PROPOSED WALL / / / yL� / \ I SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX - \ � %^\� � - - YD3G 12" Yard Drain 757.0o w w - / PROPOSED UNDERGROUND STORMWATER MANAGEMENT WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT RATE OF / ,LL \ O w 1` ` " • (MAX. HT. = 6') - / \I \ - - - - / / \ - - \',• \"�. " `. 12 82.15 4.87% 753.00 749.00 HDPE 2 / - - FACILITY'C' - SEE VSMP PLAN FOR DETAILS 6o LBS. PER ACRE, OR i LB PER i,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.) - / / \ _ _ Y0.3F 12" Yard Drein 753.00 a U) (WP0202000053) \ I \ \ \_ -�-'---J---------->°o'wPo�FER(TVP.) - 00 GRAPHIC SCALE\-\ QS' \ •� = �- "� 12 67.35 1.48°h 749.00 748.00 HDPE JOB NO. a O -�J \ \ \ \ / / J - - - / / \ • `�" • , • • • • ,-.r` `r'- •� YD-3E 15" Yard Drain - - 752.00 182154 �O- O O\' \ / 30 / 0 / V5 30/ 60 /�` �- 120 o I fOp (0 iSEE VSMP PLAN (WP02o2o000 ) O \ B \ PROPOSED SWM FACILITY &� / / / / - - - - - J -Iw\ \ '" - - 12 52.75 3.7s� 7aa.00 7as.00 HDPE SCALE 0 o (O DO QO �O oO (O oO � O O � O Ong FOR SWM OUTFALL DESIGN QO \ \ - - - _ \ MAINTENANCE EASEMENT / - _ �� O ^ O O O -- / \� _� / - - - "� / / / - U - - - - ,�•LL LL`. Y0.5A 12" Yard Drain - - 735.00 Zu - 3�r rn�rn�� O / �� \ /--_-----/ -// ( LU IN FEET ) ---�� -- ¢ W -_-- - �`��.1,LL 12 16.00 15.63h 730.00 727.50 HDPE SHEET NO. yv / - - / / _ _ - - - - O \ ��O ^t - \ / / _ - ' / - / - YDS ° 12" Cleanout - - 731.00 �Q O / / r - 1 inch = 30/ it o C� / / O (0/ / - / - r / - - ioo-YEAR FLOODPLAIN (TYP.) Q ��� - - i - / - - - - - - - , - 12 1s.eo 14.88 /° 724.00 72tso HDPE SCOTT/R. CI?LLINSZ / / / / \ R!! 910 / / / / - \ > U No. 35791 � o c �� 3/24/21 sv�i p CL_N14G i _ _ J N Z_ ILLI i W LU 1u (PROPOSED 12" YARD DRAIN SYSTEM w/ 1o' PRIVATE EASEMENT (TYP.) co SANITARY SEWERMANHOLEX- - /// ) PROPOSED 8" HOPE ROOF/FOUNDATION DRAIN i' Z/ � In MH-Eiz ( 5 RIM TO BE RAISED FROM 759.75T076o.25 SYSTEM w/ io' PRIVATE EASEMENT( TYP.) 757-00 EX. INV. IN-_747.73, EX. INV. OUT-_747.65 o J _ - 'A PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN SYSTEM w/ 1o' PRIVATE EASEMENT (TYP.) �'/ I ��/ YD-6D 758.67 S / - > > z / \ / -SLOPES STEEPER THAN 3:1 SHALL BE PLANTED WITH NATIVE STEEP SLOPE MIX PROPOSED 12" YARD DRAIN SYSTEM-' � S .. WITH ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS ATA RATE OF w/ 1o' PRIVATE EASEMENT (TYP.) OYD-6C /' I W1 /6o LBS. PER ACRE, OR 1 LB PER 1,000 SF, UNLESS SPECIFIED OTHERWISE (TYP.) ' -PROJECT BOUNDARY (TYP.)-L 758.00i ---- LO i- LOT ---I PROPOSED 8" HDPE ROOF/FOUNDATION DRAIN = y �- \ m T LOT 1zz 1 / 1 - SYSTEM w/ 1o' PRIVATE EASEMENT (TYP.) A LOT 1zp T2� m - n EXISTING SANITARY SEWER MANHOLE (MH-EX-11) 760 LOT m 11g -745 I, 6 6 - YD-6B 757, - \ LOT 11 T c -- J m / EX. INV. IN 745 99r EX. NV.1 OUT 75 8z YD-6A 6� \_ LOT 116 7 m _w LOT 118 a ¢� X RIM TO BE LOWERED FROM 61. z TO 8.0o I � 1 m A „ � PROPOSED 12YARD DRAIN SYSTEM � - � �- LOT 11 T, c �, � � � i 1 ,r, n _ , >aa- / / w/ io' PRIVATE EASEMENT TYP. \ S T v m A W N LOT 111+ �c m?� „ „ °� w / ( ) -- LOT - // _A \ 113 i y m v o IL / \ / PROPOSED zo' PUBLIC 60 LOT 112 m A „ „ ° l!1 DRAINAGE EASEMENT 111 m v m ° wQ N m M 0 Q i 0 F z w I � 0 U U i Z i Z O U i LU w a Lu w u7 w 1 CD LOT LOT r G o o o w N N N LOT 110 \\ v p m o v 108 10T.G�\ -. f � O#OOTM.- 0 N N N L1O7 LOT n c m p _ A o / / / / / \ / / / = e 156 ' S �! • ".7s4\so: L O LOT LOT 105 T G m .o , o _ 7 $ / \ / / / / / / / ' ' -- ` • -(, u+� �w ro -' o - / i o _ - ` i - _ Mom/ •- T _ M 103 4 -^ „ / - - - -- -ram �m�ow o 64g . e. / f� - /r PROPOSED SWM FACILITY,& . `" LL .e .+ • . • �$• . , / � 2+0 _ _ \ . � \ �' _ M MAINTENANCE EASEMENT " . � . Sod . / - � m _ o \ GAR=75933 \ BWT=749 O 759-13 754.67TB. -\ 749 N f 00 FFE=76o.00 FFE-758.67 - _ �� M 32 5 /\\'GAR=75 .00\ BSMT= 0.1 4 \ / / / / /%• �. ` ` / \ \ / J56 y67C M 56 \ j58 \ \ FFE=7 7 75 7 Co i LOT X 1, �� 7 � ' 8 LOT LOT GAR=75 .67 \ �� " /49 3 \ / / \ �• ,•` '. //''/ r M / S FFE 3 \ 89 9° 1 N PROPOSED DRAINAGE SYSTEM w57`F \ - `\ \ LOT C) • • ./`� •`.•` " .•-.` °%.•.• \/ f/ j j ,•. � � M 3+So -�o FFE= \� �' off` 91 ; / � . i ; . - - . -/ - / � �� � --' �-i-M e '• -- � S 1 \ \ / / / • . . ` . / " G R- \ / +oo r 5 \ -- GAR=757.67 749 z \ I 3 - " _ - \- g _- % 4� - _ 1. \ FF =75$ 0 1- / FFE-75833 LOT '\ \.,. \ -- GAR=757-17` SMT= 8. o\ \ J \ , \ \ Q / / �.�-"'"•'. PROPOSEDSWMFACILITY& LOT \ 34+50 \` 74 5 93 \\ \ / -_/ i -- ` . ;,.,`./,` -•' • .• •`•` .` .• •.`•. ".�.. -`' i 101 � //�\ 1\._FFE 757.83 `, --- � \ \ \ / � • . • • , . .�, . , • .� : • '�• . '.`. ` ` `"4• '• • MAINTENANCE EASEMENT �, � � -� _ - �. 8.00� ( ( �44 - \ ( � 6- rrrrr� PROPOSED z `PUBLIC - = 7rj \ 74 \ \ LLi \ ,v. 4. � •` .'`./ "•' '`.• ✓ `•-`.•` .• .• .�- '.``.'' , 4 � \- \ GAR_ �7 ( `\ LOT DRAINAGE EASEMENT -\ - - - 1 E 7 3 LOT \ - , • i . • . • �� , . � oio t ry - GAR=75 -- - \-- • \� \ . ". " - • PROPOSED STOR(v1WA7 R • GAR-75733 l .� r - FFE= 03 \ \ \ \ - \ _J4_- \ /. FFE=758.00 1 ' 1 _ - - 1_ \ LOT i 74g \ J - ( _ O \ - �� 7 - /• in I \� J / . ` . • . % - ` - " MANAGEMENT FACILITY B / . • ` . • - �7. = _ 1 I 11 GAR-75_.83 �. 7y4 iv1T-747 7... \ \ - - \ . ' / " . Y . ', -%. ` • LLi SEE VSMP PLAN FOR DETAILS LOT 1 _bFE- o \ \ \ \ \ \ y f. r / . , • \ '' - �\ 1- LOT \7144 ~ _ - _ \ " • (WP02oz000053) - .. i - • '. •• . - . •4` . / � 100 . `L/ G I T=746.67 , \ � � ' � ' �' • - - � \ \ ,. _. LL.. -. "• t - • i .•....: ,' 1. .•/. :0 11 `, 1 '• � - / r \ � \ � \ / -. •, . •, . `, ', ". . ` . •- • '. . • . `- '.6 ". . -r. i _ � � •�. -- BSN)T�746.z5) - 1 1 \ \\� � i _ �. ` -74 '. � . ••i`. • . i. • / J \` •` •" •'. \' ' -'.•' / I LOT \ .•�\! LOT' 1 9 11 \ 1 r \\ \ � 74 7 .LLj36e '=�"' �`. ='1` •`•'••' / 1 50 \ \ � \ --I . ` !• '•i • ` . • `� - - •;) •� II, � PROPOSED WALL 1 � ,�- /:' :'•'••%-' •'�'.` .�. .LLB". 6O Ur 1 - � � MAINTENANCE EASEMENT ✓ �2� � • � __ J - � - - &= �-'= r ` • %` ' /•, • / O s 1 _- 744 PROPOSED WALL \ \ ✓� `./! / �� W \ y1�0 I \� ��_-- \�-------- \ •'�. �/ / /. \ 74z, - - -- - / (MAX. HT.=6') -��^ \ � --=.i`�'• '�-•• `�• Oa - / \ % ✓ �. S / ioo' WPO BUFFER ~`. SLOPES STEEPER THAN 1 SHALL BE PLANTED \ ". j- '" • ` / \�-�-----'-- \ '".` .`, j. •. LL. ," .`` \ _,':e / S 3� \ .'/�" PROPOSED SWIM FACILITY& � \ _- �•i�'•� % OO / Ul .. `}\\ WITH NATIVE STEEP SLOPE MIX WITH ANNUAL / - -`s- • - / MAINTENANCE EASEMENT/OOO / �- \\ `\ \ \ �;4 RYEGRASSBYERNSTCONSERVATIONSEEDSAT BOO / w ( \AO O A A V -- •' ���iii y �ARATE OF60LBS.PER ACRE, ORILBPER 1,000SF, A / / v 0�O �� � -/ LLi \ \ J PROPOSED SWM FACILITY & F ^- \ / Oo O� Z �O \y \ / UNLESS SPECIFIED OTHERWISE (TYP.) \ r -~-'' ' \MAINTENANCE EASEMENT \ �'' / PROPOSED SWM FACILITY&/ / \\/ / too -YEAR FLOODPLAIN MAINTENANCE EASEMENT /A\� V v / 1 / L OOP / v (n �\ \\ \ / / / / SEE VSMP PLAN (WP0202000053) / / / 0 / \ \ \ v \ / - / �� FOR SWIM O_UT,FALL DESIGN PROPOSED VDOT STD. ES-i & CLASS Ai RIPRAP LINEDLU \I \ \ \\\ \\ \ OUTLET OUTLET PROTECTION w/ FILTER FABRIC - / f j /O O O O a� ®®� O0 OO O O O O O % X \ / / / O O OOO O o O (\� \ UNDERLAYMENT(L=zo' W1=6' W2=12' D=1. ') -748- 0� \��00 C�Co7�500 0 0 O \ Q PROJECT BOUNDARY (TYP.)- \ ',,.�JXISTING STREA 44 \ \ Cal Cod / DRAINAGE DESCRIPTIONS PIPE INFORMATION INLET INFORMATION STIR. NO. DIA. (in.) LENGTH* (ft.) SLOPE (%) INVERT IN INVERT OUT MATERIAL INLETTYPE Curb Type SLOT LENGTH RIM ELEVATION 64B DI-3B CG-6 8 756.75 64A 15 27.68 1.16% 749.75 749.43 RCP 64 DI36 CG-6 8 756.75 63 15 134.83 1.04% 749.33 747.93 RCP 62 DI3B CG-6 8 755.33 61 15 32.18 1.03% 747.83 747.50 RCP 60 DI3C CG-6 6 755.08 59 24 48.14 0.66% 747.17 746.85 RCP 58 DI-3B CG-6 6 755.58 57 24 44.05 0.73% 746.75 746.43 RCP 56 M H - - 752.67 55 24 138.65 1.25% 746.33 744.60 RCP 54 DI-1 - - 749.50 53 24 61.03 1.23% 744.50 743.50 RCP 60D DI-7 - - 754.50 60C 24 48.25 1.04% 749.00 748.50 RCP 60B DI3C CG-6 12 754.67 60A 24 56.66 0.71% 748.50 747.27 RCP YD-61D 24" Yard Drain - - 758.67 12 102.40 C 755.17 754.00 HDPE YD-6C 12" Yard Drain - - 758.00 12 89.35 C 754.00 753.00 HDPE YD-6B 15" Yard Drain - - 757.00 12 56.00 C 753.00 752.33 HDPE YD-6A 12" Yard Drain - - 756.67 12 75.90 C 752.33 751.50 HDPE YD-6 12 Cleanout - - 756.00 12 19.35 C 751.50 750.00 HDPE 68B DI3B CG-6 8 754.75 68A 15 34.86 0.72% 747.75 747.50 RCP 68 DI3B CG-6 6 754.75 67 15 206.62 0.97% 746.00 744.00 RCP 66 DI36 CG-6 6 749.75 65 15 176.53 1.12% 742.50 740.52 RCP 66B DI3B CG-6 10 749.83 66A 15 34.85 0.86% 742.83 742.60 RCP Drainage Easement Chart Pipe No. Size (inches) Max Depth (feet)l Easement Width Required (feet) Easement Width Pro\4ded (feet) 53 24 7.1 1 18.2 24 55 24 8.6 1 21.2 24 57 24 9.6 1 23.2 24 I / / / ® O O N / \ --- SCR GRAPHIC SCALE \\ ---- _ -/ / --- / __ / 00 0� / _ \ -�- / L // / j OOP � O�0 ao o rs ao� so \ �n �........ / ----/ \ - - - // �Co}Ce1@Q000 O \FEET-- - \ o v �0 \��� / O��O��QO 1 inch 30/it./ //O �OO -----_������\ \ �' /// C_•--��_ _ OO O O - - ` \ - - - - - y O O / O \ \ \ \ ) \ QO 00 Oo Oo 00 0 0 00 I OO = - ' Oo OO - - - - - - - - - - - -Col Oo = o Oa OO o o OO ® o o _ - Oo Oo Oo 00��/' \\\ _ @Ce?®fie-0. L- _ 00����� 0000--°�-®�®OO��OOo---- G w In JOB NO. 182154 SCALE 1rr = 30' SHEET N0. 10