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Home My WebLink AboutWPO202000055 Plan - Other (not approved) 2021-07-01GENERAL NOTES OWNER: WHITE GABLES II LLC 912 MARSH LN CHARLOTTESVILLE,VA 22903 WHITE GABLES VSMP PLAN AMENDMENT ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE,VA 22902 (434)293-3719 TAX MAP NO.: 06000-00-00-02600 DB 2660 PG 218 TOTAL PROJECT AREA: TOTAL SITE AREA: 3.44 ACRES (PROJECT AREA: 2.28 ACRES) ZONING: C-O (COMMERCIAL OFFICE) WITH SPECIAL USE PERMIT ALLOWING RESIDENTIAL (MULTI -FAMILY) (SP-02-023). MANAGED SLOPES OVERLAY DISTRICT & ENTRANCE CORRIDOR OVERLAY DISTRICT TOPO & SURVEY: SURVEY PROVIDED BY ROGER RAY & ASSOC, INC. TOPOGRAPHY IS FIELD SURVEY PERFORMED BY ROGER RAY & ASSOC, INC. IN JANUARY, 2009 AND UPDATED IN FEBRUARY 2020. TOPO FIELD VERIFIED BY COLLINS ENGINEERING IN JULY 2020. DATUM: NAD83, NAVD 88 EXISTING TERRAIN: PROJECT AREA IS CURRENTLY A GRASS & WOODED AREA ADJACENT TO COMPLETED PHASES OF THE RESIDENTIAL NEIGHBORHOOD EXISTING DEVELOPMENT: (3) MULTI -FAMILY CONDOMINIUM BUILDINGS EACH WITH (10) DWELLING UNITS FOR A TOTAL OF 30 RESIDENTIAL UNITS PROPOSED: (3) MULTI -FAMILY CONDOMINIUM BUILDINGS EACH WITH (14) DWELLING UNITS FOR A TOTAL OF 42 RESIDENTIAL UNITS WITHIN THIS PHASE. DENSITY: TOTAL ALLOWABLE DENSITY PER REQUIREMENTS OF THE SPECIAL USE PERMIT IS 76 RESIDENTIAL DWELLING UNITS. CURRENTLY THERE IS 30 EXISTING RESIDENTIAL UNITS AND THIS PROJECT PROPOSES 42 RESIDENTIAL UNITS FOR A TOTAL OF 72 DWELLING UNITS ON THE SITE. WATER SUPPLY PROTECTION AREA: NOT APPLICABLE WITH THIS SITE PLAN AMENDMENT WATERSHED / WATER RESOURCE AREA: RIVANNA RIVER DRAINAGE BASIN DENSITY: NOT APPLICABLE WITH THIS SITE PLAN AMENDMENT GREENWAY DEDICATION: NONE WITH THIS SITE PLAN AMENDMENT BUILDING HEIGHTS: 60 FOOT HT MAXIMUM ALLOWED, 60' MAX. HT PROPOSED SETBACKS: SEE SHEETS 2, 3, AND 4 FOR THE EXISTING 50' REAR SETBACK, 30' FRONT SETBACK, AND 215' FRONT BUILDING SETBACK SUBDIVISION STREETS: EXISTING PRIVATE STREETS (PART OF THE OVERALL DEVELOPMENT) UTILITIES (WATER AND SEWER): COUNTY PUBLIC WATER AND SANITARY SEWER AGRICULTURAL/ FORESTAL DISTRICT: NONE LIGHTING: SEE LIGHTING PLAN PROVIDED WITH THIS SITE PLAN AMENDMENT. LIGHTING SHALL CONFORM TO ALBEMARLE COUNTY LIGHTING AND DARK SKY ORDINANCE. LANDSCAPING: A LANDSCAPING PLAN AS SHOWN HAS BEEN DESIGNED IN ACCORDANCE WITH ALBEMARLE COUNTY ORDINANCE SECTION 32.7.9. TRASH RECEPTACLES: EACH OF THE (3) BUILDINGS SHALL HAVE INTERNAL TRASH BINS WITH A PRIVATE TRASH SERVICE FOR COLLECTION. PHASING: THIS SITE SHALL BE DEVELOPED IN THREE PHASES, SEE PHASING PLAN SHEET 3. PHASE I - BUILDING II PHASE II - BUILDING IV PHASE III - BUILDING VI PARKING: PARKING REQUIRED: (2) SPACES PER RESIDENTIAL UNIT (ASSIGNED PARKING) + 1 SP/ 4 UNITS FOR GUEST PARKING 1. (30) EXISTING RESIDENTIAL UNITS = 60 REQUIRED PARKING SPACES 2.(42) PROPOSED RESIDENTIAL UNITS = 84 REQUIRED PARKING SPACES 3. GUEST PARKING REQUIRED = 72 UNITS x 1 SP/4 UNITS = 18 SPACES REQUIRED 3. COMMERCIAL OFFICE BUILDING/HOUSE = 4 SPACES REQUIRED TOTAL PARKING REQUIRED = 166 SPACES PARKING PROVIDED: 1. GARAGE PARKING SPACES = 147 SPACES 20 GARAGE SPACES PER BUILDING (PAVILION I, III, & V) = 60 SPACES 29 GARAGE SPACES PER BUILDING (PAVILION II, IV, & VI) = 87 SPACES (INC. 6 HAND. PARKING SPACES, PLUS (2) LOADING SPACES 12'x25') 2. ONSTREET PARALLEL PARKING SPACES = 26 SPACES TOTAL PARKING PROVIDED = 173 SPACES + (2) LOADING SPACES STREAM BUFFERS/FLOODPLAIN: NOT APPLICABLE WITH THIS SITE PLAN AMENDMENT RETAINING WALLS: (1) RETAINING WALL IS PROPOSED WITH THIS PLAN AMENDMENT, SEE GRADING SHEET FOR INFORMATION. RECREATION: NOT APPLICABLE WITH THIS SITE PLAN AMENDMENT LAND AREA (WITHIN 1.98 AC. LOD): PARKING AND TRAVELWAYS 0.30 AC. (15.2%) BUILDINGS: 0.81 AC. (40.9%) SIDEWALKS: 0.02 AC. ( 1.0%) TOTAL IMPERVIOUS AREA: 1.13 AC. LAWN/OPEN SPACE AREA: 0.85 AC. (42.9%) PAVED PARKING AND CIRCULATION AREA: 12,875 SF CRITICAL SLOPES: SEE EXISTING CONDITIONS FOR THE LOCATION OF THE MANAGED SLOPES ON THE PROPERTY. BURIAL SITES: NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THE SITE WITHIN THE LIMITS OF THE PROJECT AREA. STORMWATER MANAGEMENT: A DRY STORMWATER MANAGEMENT DETENTION CELL AND DRY SWALES SHALL BE CONSTRUCTED AS SHOWN ON THE GRADING AND DRAINAGE PLAN. ADDITIONAL WATER QUALITY NUTRIENT CREDITS SHALL BE PURCHASED TO ACHIEVE THE NECESSARY REMOVAL RATES FOR THE DEVELOPMENT. CAVE: 1" = 50 r, (WP0202000055) SAMUEL MILLER DISTRICT ALBEMARLE COUNTY, VIRGINIA n n A � Eight Woods[ m n W ? 3 � Q Ln 'z,pa y�A' 250 4 F c' w 0 a 0 o i�c o VICINITY MAP SC�LE: 1" = 500' aC pa lediatric Associate - Of Chado... ' '�The Market !"y Rd -hBHlair x O ell, Z kn w SPECIAL PERMIT CONDITIONS O o_ 1. THE APPROVED FINAL SITE PLAN SHALL BE IN GENERAL ACCORD WITH THE CONCEPTUAL PLAN (JANUARY 10, 2003 REVISION) (THE "CONCEPTUAL PLAN") AND SPECIAL PERMIT JUSTIFICATION DATED APRIL 22, 2002. MODIFICATIONS TO THE DESIGN OF THE w INTERIOR LOOP ROAD, APPROVED BY THE DIRECTOR OF ENGINEERING AND PUBLIC WORKS TO ACCOMMODATE FIRE TRUCKS, \ SHALL BE DEEMED TO BE IN GENERAL ACCORD WITH THE CONCEPTUAL PLAN. 2. AS SHOWN ON THE CONCEPTUAL PLAN, NO NEW STRUCTURES SHALL BE LOCATED IN THE FRONT (SOUTHERN) PORTION OF THE \ LuPROPERTY. THERE SHALL BE A MINIMUM DISTANCE OF TWO HUNDRED FIFTEEN (215) FEET BETWEEN THE SOUTHERN -MOST STRUCTURE AND THE FRONT (SOUTHERN) PROPERTY LINE. /y 3. THE ENTRANCE ROAD SHOWN ON THE CONCEPTUAL PLAN SHALL BE CONSTRUCTED BY THE APPLICANT TO AN URBAN ROAD STANDARD FROM ITS JUNCTION WITH ROUTE 250 WEST TO THE INTERIOR LOOP, AND SHALL INCLUDE A SIDEWALK OR OTHER O6O APPROPRIATE PEDESTRIAN PATH, CONSTRUCTED TO A STANDARD ACCEPTABLE TO THE DEPARTMENTS OF PLANNING AND COMMUNITY DEVELOPMENT AND ENGINEERING AND PUBLIC WORKS, ALONG ONE SIDE CONNECTING THE INTERIOR LOOP TO THE /6\ PUBLIC SIDEWALK AT IVY ROAD. 0/� 4. ALL ROADS ON THE PROPERTY CONNECTING TO ADJACENT PROPERTIES AS SHOWN ON THE CONCEPTUAL PLAN SHALL BE 0 \ CONSTRUCTED BY THE APPLICANT TO AN URBAN SECTION STANDARD, WITH A MINIMUM WIDTH OF TWENTY (20) FEET, FINAL WIDTH TO BE DETERMINED AT THE TIME OF FINAL SITE PLAN APPROVAL BY THE DIRECTOR OF ENGINEERING AND PUBLIC WORKS. ALL ROADS CONNECTING TO ADJACENT PROPERTIES SHALL INCLUDE A SIDEWALK OR OTHER APPROPRIATE PEDESTRIAN PATH iCOTT/R. Cb-LLINS�Z Lic. No. 035791.n 5/24/21 z �'SIONAL E��'1 �6- ALONG ONE SIDE, CONSTRUCTED TO A STANDARD ACCEPTABLE TO THE DEPARTMENTS OF PLANNING AND ENGINEERING AND fob PUBLIC WORKS, PROVIDING A CONNECTION TO THE PUBLIC SIDEWALK 0 tD N N Sl O) M m y� S. AN ACCESS EASEMENT HAS BEEN DEDICATED ON THE SUBJECT PROPERTY FOR TRAFFIC FROM THE N/F KAPPA SIGMA PROPERTY (TAX MAP 60, PARCELS 27 AND 27B, DB 2226-218, 225 PLAT & DB 2706-163, 168 & 169 PLAT). THIS ACCESS SHALL BE CONSTRUCTED BY THE APPLICANT TO THE SAME STANDARD AS REQUIRED IN CONDITION 4. 6. A CONSOLIDATED ENTRANCE WILL BE LOCATED TO THE WEST OF THE WHITE GABLES PROPERTY ON THE N/F KAPPA SIGMA \ PROPERTY (TAX MAP 60, PARCELS 27 AND 27B) AN ACCESS EASEMENT HAS BEEN DEDICATED TO CONNECT THE LEGAL RESEARCH \ GROUP PROPERTY (TAX MAP 50, PARCEL 25) TO THIS CONSOLIDATED ENTRANCE (DB 2226-218, 225 PLAT & DB 2706-163, 168 & 169 rm \ \ PLAT). )THE SEGMENT OF THE ACCESSWAY TO CONNECT THE WHITE GABLES PROPERTY TO THE LEGAL RESEARCH GROUP PROPERTY HAS BEEN CONSTRUCTED WITH THE PHASE II WHITE GABLES SITE PLAN. THE APPLICANT WILL CONTINUE TO WORK THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT) AND THE COUNTY'S DIRECTOR OF ENGINEERING TO PHASE THE CONSTRUCTION OF THE \ \ RIGHT IN/RIGHT OUT ENTRANCE/EXIT ON THE WHITE GABLES PROPERTY TO REPLACE THE EXISTING ENTRANCE ONCE THE SAID \ \ CONSOLIDATED ENTRANCE IS CONSTRUCTED. _0� as �\ 7. WITHIN EACH PAVILION SHOWN ON THE CONCEPTUAL PLAN, THE LARGEST CONDOMINIUM UNIT SHALL BE AT LEAST THIRTY (30) PERCENT LARGER, BASED ON FLOOR AREA, THAN THE SMALLEST UNIT WITHIN THE SAME PAVILION. Cy� g cy) N 8. THE APPLICANT SHALL COMPLY WITH ALL REQUIREMENTS OF THE VDOT RELATED TO DESIGN AND CONSTRUCTION OF THE / ENTRANCE TO THE PROPERTY, AS OUTLINED IN ITS LETTER OF JANUARY 28, 2003 (ATTACHMENT H). THE APPLICANT SHALL BE Itt RESPONSIBLE FOR THE COST OF A TRAFFIC SIGNAL AND ITS INSTALLATION (THE "SIGNAL") AT THE INTERSECTION OF ROUTE 250 co o� WEST AND AN ACCESS POINT SERVING THE PROPERTY APPROVED BY VDOT AND THE COUNTY'S DIRECTOR OF ENGINEERING, AS / PROVIDED IN THIS CONDITION. UNLESS THE SIGNAL ALREADY HAS BEEN INSTALLED, THE APPLICANT SHALL PAY TO THE COUNTY THE COST OF THE SIGNAL AS FOLLOWS: 0! i C\l / ( 8A. PRIOR TO THE ISSUANCE OF A BUILDING PERMIT FOR THE FOURTH PAVILION, THE APPLICANT SHALL PLACE FUNDS IN CD j ESCROW OR PROVIDE OTHER SECURITY ("SECURITY") ACCEPTABLE TO THE COUNTY IN AN AMOUNT EQUAL TO THE COST OF THE SIGNAL (CURRENTLY ESTIMATED TO BE $140,000), WHICH AMOUNT SHALL BE CALCULATED IN THE YEAR IN w m N / WHICH THE SECURITY IS PROVIDED. THE SECURITY SHALL CONTINUE SO THAT IT IS AVAILABLE TO PAY N FOR THE COST OF THE SIGNAL UNTIL TEN (10) YEARS AFTER THE DATE OF APPROVAL OF THIS SPECIAL USE PERMIT; SECURITY PROVIDED THAT IS NOT IN AN INTEREST -BEARING ACCOUNT SHALL BE ANNUALLY RENEWED, AND THE Q AMOUNT OF THE SECURITY SHALL BE ADJUSTED EACH YEAR ACCORDING TO THE CONSUMER PRICE INDEX; 8 S ar-7 A m c TTW �� z^ 8B. IF, AT ANY TIME UNTIL TEN (10) YEARS AFTER THE DATE OF APPROVAL OF THIS SPECIAL USE PERMIT, VDOT AUTHORIZES IN WRITING THE INSTALLATION OF THE SIGNAL, AND VDOT AND THE COUNTY'S DIRECTOR OF ENGINEERING APPROVE THE SIGNAL'S INSTALLATION BEFORE THE APPLICANT HAS OBTAINED A BUILDING PERMIT FOR THE FOURTH PAVILION, THE COUNTY MAY DEMAND PAYMENT OF THE COST OF THE TRAFFIC SIGNAL, AND THE APPLICANT SHALL PAY THE COST TO THE COUNTY WITHIN THIRTY (30) DAYS; AND 8C. THE COUNTY MAY APPLY THE APPLICANT'S SECURITY TO CONSTRUCTION OF THE ACCESS ROAD OR OTHER ELEMENTS OF THE FUTURE TRANSPORTATION IMPROVEMENT PROJECT OTHER THAN THE TRAFFIC SIGNAL. 9. THE APPLICANT SHALL PROVIDE BICYCLE FACILITIES AND WALKWAYS IN CONJUNCTION WITH ROAD IMPROVEMENTS TO IVY ROAD AS REQUIRED BY VDOT AND THE DEPARTMENT OF ENGINEERING AND PUBLIC WORKS IN CONJUNCTION WITH PRELIMINARY SUBDIVISION/SITE PLAN APPROVAL. EXISTING CULVERT Q DROP INLET & STRUCTURE NO. CURB CURB & GUTTER PROPOSED ASPHALT PROPOSED CONCRETE PROPOSED PAVER (IMPERVIOUS) BENCH MARK T VDOT STANDARD STOP SIGN zoo EXISTING CONTOUR SHEET INDEX TITLE SHEET COVER 1 EXISTING CONDITIONS 2 EROSION & SEDIMENT CONTROL NARRATIVE 3 EROSION & SEDIMENT CONTROL DETAILS 4 EROSION & SEDIMENT CONTROL PLAN AND CALCULATIONS - PHASE I 5 EROSION & SEDIMENT CONTROL PLAN AND CALCULATIONS - PHASE II 6 EROSION & SEDIMENT CONTROL PLAN AND CALCULATIONS - PHASE III 7 EROSION & SEDIMENT CONTROL PLAN AND CALCULATIONS - PHASE IV 8 STORMWATER MANAGEMENT PLAN 9 STORMWATER MANAGEMENT DETAILS 10 STORMWATER MANAGEMENT DETAILS 11 DETAILED GRADING PLAN 12 TOTAL SHEETS Lli J J O� U) ul-I Lli zQ U w ' Lu ul U) z LU •� U) J w JQ 0 O CN N u 1 z Lu M Lu Q J Lu Lu Lu (n ,^�^ LuV // > LL O O ,G V 1 Lu m V Lu H� 2 w J F U ~ Lu w O w of = a kn JOB NO. 202187 SCALE AS NOTED SHEET NO. KENRIDGE HOMEOWNERS CARLTHE HOWARD FAMILY TRUST VALENTINE, HANNON RUTTER MICHAEL & ASSOCIATION ZONING: CO COMMERCIAL OFFICE NING: CO COMMERCIAL OFF] E VALENTINEZONING: CO TAX MAP 60K PARCEL B1 TAX MAP 60K PARCEL 6 COMMERCIAL OFFICE USE: STORMWATER MANAGEMENT PITiS, P MURRY ZONING: CO COMMERCIAL FFlCE USE: RESIDENTIAL TAX MAP 60K PARCEL 1 SULLIVAN, PAUL FRANCIS TAX MAP 60K PARCEL USE: RESIDENTIAL TRUSTEE & ANNE MARIE USE: RESIDENTIAL WARDS, ROBERT L OR KA EN _ CARR, HOWARD M TRUSTEE &, TRUSTEE ONING: CO COMMERCIAL CE -- - - Z ING: CO COMMERCIAL OFF] TAX MAP 60K PARCEL 1 604 TAX MAP 60K PARCEL 2 ONING: CO COMMERCIAL OF ICE S IDMORE, KAREN L 2017 UST USE: RESIDENTIAL LUAM C WEATHERSBY & USE: RESIDENTIAL TAX MAP 60K PARCEL 4 Z NING: CO COMMERCIAL 0 ICE f 604 CHARLOTTE F DANIEL, THOMAS M, TRUS E USE: RESIDENTIAL A NE, JAMES III & ALICE REN TAX MAP 60K PARCEL ING: CO COMMERCIAL OFFl U/T THOMAS DANIEL TR MALONE C APIN, PETER, TR OF THE USE: RESIDENTIAL TAX MAP 60K PARCEL 1 ING: CO COMMERCIAL 0 ICE ZO ING: CO COMMERCIAL OFFIC PE R CHAPIN TRUST & DIANE so3 TAX MAP 60K PARCEL TAX MAP 60K PARCEL 5 CHA IN, TR OF THE DIANE CHA boa USE: RESIDENTIAL USE: RESIDENTIAL USE: RESIDENTIAL ZONI G: CO COMMERCIAL OFFIC -" USE: RESIDENTIAL 602 602 i KENRIDGE HOA, INC \ \ 6oi 6\7 \ 1 ZONING: CO COMMERCIAL OFFICE TAX MAP 60K PARCEL Al i USE: OPEN SPACE 823.40' N17°25'22"E 1.09' 398.34 / FROM CORNER f 1 I I I N19°4 '45"E � � I v � 1 I 425.06' f I 6ss / 20'SEWER EAS NT (D.B.2660-22 & TMP 60-26C PAVILION III PAVILION I T I 1130' & VARIAB o PAVILION V EXISTING EXISTING I I I I AICESSiEASEMEN EXISTING CONDOMINIUM CONDOMINIUM I BI 2706 P. _ CONDOMINIUM DB 2660j P.224(plat a, I I tat o.6 ACRES / I _ S>� � i i � (P �i 3 2.85o ACRES I TMP 60-26 20'& VARIABLE WIDTH ' o.86 ACRES - VEPCO EASEMENT I \ � 20' WATERLINE (D.B.2561-704) EASEMENT; TYP. o A D.B. 3059-532 n f'-x1 11 III II II1v Y\ U ! nc B. t° a' > �oo y �l3059-5322bIWATER EMENT�D 1 I I I I I EDr �F m II 2„ I I 0\ 1\ 1\ 1 \ \ ro - w� ow LL µ 1 1 p MAPLE I I kn m \ \ rnl \ __ --- C -- - o. w ` - °w_�-.°� ` ow `��-`ow �0• (.. \ 1 / \ G �_ o rr 65.67 / �- - zo' DRA!NA�E m I cn D \ ' x' I y LI ITS OF PRI ATE \ \I I - 48 38 P 3(P r � 14" I I I m 0 � � � / x \ TMP 60-26AA C � \ oc J 30 ACCESS E MT. 2 z IN I I TTI /� - / 7 DARRELL, JOHN STEWART, `3 £ FFlIp(� I I III \ \\\� �' /' \ / TRUSTEE JOHN STEWART I SYCAM TMP 60-26A 20• SE ER ESMT.I 14" �s % . .. I EXISTING DARRELL TRUST 30" EXISTING PINE W I 1 >> . z MANOR HOUSE 0.18 ACRES SPRUCE/CED I I ✓/DB 1896 P.237(plo0 SWM u / A NOLIA p6.4240, PG.544 zo'� VARIABLE WIDTH I i DB 738 P. 34J(p t) FACILITY I4 - C y / I VIRGGO ELECTRIC & ' ��P OF U LI VEPCO EASEMENT / POWER CO PANY EASEMENT f�i / 20 WATER INE EASEMENT \ ` 1 ^ I D.B.2561-704) I o I _} AC AfIES; 2 B. 05 -532) Vvv�� y SPRUCE - I _ - 1 SONS--sos.76_ (D.6262-464) � \ / j \MIN. 36" v aD SPRUC \ \ \ \ 27" DBLR ^� REMAIN I i8 ACRE \ MAPLE CEDA - / \TO, of E ( 1 ao wavaTe access S LAME �\ M" 3 J \ EXISTING TREE G \ - - - - _ _ E"r s IrOP-ssoae' 20'GRADING & FFER m N I 1 ` \ 14 S E - - - - , \ / , ' . - OUT s8s C AR A y� SETBACK CTI - I (D.B.1 896-238 LAT) `'zap\ £� y% 18" GN IA u - \ \ I _ W 30 ACC SS II CO I 3 \ c`� \ - wE I 20' SEWER E MT. EAS MENT; tYP. \\o ` C6 \ L3 §� \fASE^fror DB 1896 P.23 (plat) z 01 DB 738 P. 34 (plot) SAN. MH A-2 I f ` 13 °'� EXISTING WATERLINE �' / ' v AND FIRE HYDRANT - ' / TOP=sso.16' 1 � ` / I I / /EXISTING SANITARY ' // / � irNivout saso4' < I EXISTING TREES TO , - ' EXISTING ASPHALT - - - - TO REMAIN_ _ O - 'TO REMAIN / ' TRAVELWAY / - - - r _ PROJECT LIMITS , ' - ' EXISTING - 0I / •48� � � � BE REMOVED i �' � I/ /l // i - - - � I f i ASH \ z 20'& VARIABLE -WIDTH _ - / STOCKPILE - O SETBACK AREA { a C10 \ / VEPCO-EASEMENT ' III/ I• ® I I v 2.2 ACRES TMP 60-26 ' I Q ' rp 95 EXISTING SAN. SEWER / TMP 60 26 t� WHITE GABLES CHARLOTTESVILLE LC EASEMENT TO BE VACATED 6 C11 C/o ROBINSON DEV GROUP INC z I ro '282 ACRE s 3.438 ACRES / ' EXISTING I r rn 30' DB.2660, PG.218 / w 18 MAGNOLIA - - MANA EDALBEMARLE EbPNTYPES SEDIMENT '/ / -% O 4 TRAP II INE � r ,; � � � G S S O S�� Vv �/ /i/ � /� �, THE CHESAPEAKE & OHIO v AG LIA ' - / RAILWAY COMPANY 30.01' 36 / I I D DAR O L (T _-/ _ - - VER Y 6o�r 8 517.21' / 'A , Y > _ \ o Qj D.B. 169-593, 594 PLAT ZP . - - G(jS � 72.06' IRON - OHE - OHE � ' OHE'7 HE oQ I FOUND - - - - -/ I � - EXISTING EXISTING STAGGERED ROW OFFICE BUILDING OF EVERGREEN TREES ON ADJACENT PROPERTY I 4 I I II f I I I � I 1 I ,I I I I f I I II I I I LINE BEARING DISTANCE L1 S27°55'55"W 39.42 L2 S19.21'00"W 43.17 L3 S23'17'1 YIN 104.15 L4 S69°52'46"E 22.89 L5 S58°37'51 "E 20.89 L6 S68'44'25"E 25.39 L7 S23'17'1 YIN 35.70 LINE DELTA RADIUS ARC TANGENT CHORD CHORD BEARING C1 133'31'54" 75.00 174.79 174.70 137.84 S27°15'34"E C2 11`34'21" 320.00 64.63 32.43 64.52 S33`43'12"W C3 8'34'55" 85.00 12.73 6.38 12.72 S23`38'28"W C4 32°3536" 35.00 19.91 10.23 19.64 S03'03'12"W C5 36°31'49" 75.00 47.82 24.75 47.01 S05'01'18"W C6 79'08'18" 105.00 145.03 86.77 133.77 S62°51'22"W C7 105'34'32" 17.00 31.32 22.39 27.08 S49`38'15"W C8 26'38'14" 185.00 86.01 43.80 85.24 S16'28'08"E C9 74°3535" 22.00 28.64 16.76 26.66 S67°05'03"E C10 38°41'37" 215.00 145.20 75.49 142.45 S85'02'02"E C11 35'37'43" 185.00 115.04 59.45 113.20 N83`18'06"W C12 88°56'07" 22.00 34.15 21.59 30.82 S34`24'59"W C13 28°26'26" 138.00 68.50 34.97 67.80 SO4.10'08"W C14 22°54'25" 125.00 49.98 25.33 49.64 N08°22'13"E C15 17'52'58" 22.00 6.87 3.46 6.84 N12°01'28"W C16 69'50'57" 215.00 262.11 150.12 246.17 N1013'24"E C17 34°49'09" 110.00 66.85 34.49 65.82 N27`44'17"E C18 3'26'31" 221.00 13.28 6.64 13.27 N12'02'58"E C19 11'51'25" 1952.90 404.14 202.79 403.42 S50'02'18"E C20 84°09'50" 75.00 110.17 67.72 100.53 S65'22'07"W C21 91'30'26" 17.00 27.15 17.45 24.36 N26`47'45"W C22 26.11'25" 185.00 84.57 43.03 83.83 N32.03'11"E C23 5-27'50" 1 140.00 1 13.35 1 6.68 13.35 N42`24'56"E T.M. 60 - 25 ROSSER ASSOCIATES _ ' SAN.MH. A-1 D.B. 1083-50 D.B. 635-308 PLAT USE: OFFICE - - - ZONING: CO ' /- COMMERCIAL OFFICE / GRAPHIC SCALE 30 0 15 30 60 ( IN FEET ) 1 inch = 30 ft. 12'., SCOTT/R. 05LLINS'Z Lie. No. 035791 112� 5/24/21�i z z 0 0 zz O u LU LU a a . Q kO N V r4 r4 T M 111 00 ti Co M 00 N i N CD wN N w Lu J ® W Lu L0 zQ U w ' W W Lu J~ W J< CD CD N G 1 z Lu 0 LU u-) 2: z Q O H--I Q � J O m U Lu z U W O �i Lu W V Lu 2 w F- U F- w a � JOB NO. 202187 SCALE 1"=30' SHEET NO. 2 1992 EROSION & SEDIMENT CONTROL MEASURES: STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH THE ORGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING. 3.01 SAFETY FENCE. - A PR07EC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY 774E PUBLIC. 3.02 CONSTRUC77ON ENTRANCE, A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONS7RUC77ON SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONS7RUC77ON ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. 3.05 SILT FENCE.- A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WW7H MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED /N ACCORDANCE WITH 7HE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 3.07 STORM DRAIN INLET PR07EC770N: A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZA77ON OF THE DISTURBED AREA. INLET PROTEC77ON APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT STAB/L/ZA77ON OF THE CORRESPONDING DISTURBED DRAINAGE AREA. 3.08 CULVERT INLET PR07EC770N. A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM CULVERT. TO PREVENT SEDIMENT FROM ENTERING STORM CULVERTS PRIOR TO PERMANENT STABILIZA7ON OF THE DISTURBED AREA. INLET PROTEC77ON APPLIES WHERE STORM CULVERTS ARE EXISTING OR TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DRAINAGE AREA. 3.09 TEMPORARY DIVERSION DIKE. - A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON SITE DURING CONSTTUC770N. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. 3.12 DI VERSION: A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPOR77NG EARTHEN RIDGE ON THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT STORMWATER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES. APPLIES WHERE RUNOFF FROM AREAS OF HIGHER ELEVATION MAY DAMAGE PROPERTY, CAUSE EROSION, OR INTERFERE WITH THE ESTABLISHMENT OF VEGETA77ON ON LOWER AREAS WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS. 3.13 TEMPORARY SEDIMENT TRAP: A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DIS77JRBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE. 3.14 TEMPORARY SEDIMENT BASIN. A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND `DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBU77NG DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. 3.18 OUTLET PROTECTION: STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT 7HE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT STORMWATER OUTLETS, TO PR07ECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTEN77AL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS 3.19 RIPRAP: A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PR07ECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE 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 CONDl77ONS. 3.20 ROCK CHECK DAMS. SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH. TO REDUCE THE VELOCITY OF CONCENTRATED STORMWATER FLOWS, THEREBY REDUCING EROSION OF THE SWALE OR DITCH. 77-1/S PRAC77CE ALSO TRAPS SEDIMENT GENERATED FROM ADJACENT AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF THE STORMWATER RUNOFF. THIS PRAC77CE, U77LIZING A COMBINA77ON OF STONE SIZES, IS LIM17ED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS. 3.31 TEMPORARY SEEDING. 7HE ESTABLISHMENT OF A TEMPORARY VEGETA77VE COVER ON DISTURBED AREAS BY SEEDING WI7H APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTA77ON BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PR07EC77ON TO BARE SOILS EXPOSED DURING CONSTRUCTION UN77L PERMANENT VEGETA77ON OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. 3.32 PERMANENT STABILIZATION.- 7HE ESTABLISHMENT OF PERENNIAL VEGETA77VE COVER ON DISTURBED AREAS BY PLAN77NG SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY STABILIZE DISTURBED AREAS /N A MANNER THAT /S ECONOMICAL, ADAPTABLE TO S17E CONDITIONS, AND ALLOWS SELEC77ON OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLE77ON OF CONSTRUCTION AC77W77ES, ALL AREAS WILL RECEIVE A PERMANENT VEGETA77VE COVER. 3.35 MULCHING.- APPLICA77ON OF PLANT RESIDUES OR 07HER SUITABLE MATERIALS TO THE SOIL SURFACE. TO PREVENT EROSION BY PROTEC77NG THE SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING 7HE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETA77ON BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULA77ON AGAINST EXTREME HEAT AND COLD. AREAS WHICH HAVE BEEN PERMANENTLY SEEDED SHOULD BE MULCHED IMMEDIATELY FOLLOWING SEEDING. AREAS WHICH CANNOT BE SEEDED BECAUSE OF 7HE SEASON SHOULD BE MULCHED USING ORGANIC MULCH. MULCH MAY BE USED TOGETHER WITH PLAN77NGS OF TREES, SHRUBS, OR CERTAIN GROUND COVERS WHICH DO NOT PROVIDE ADEQUATE SOIL STABILIZATON BY THEMSELVES, CAN BE USED IN CON✓UNC77ON WITH TEMPORARY SEEDING. 3.37 TREES. SHRUBS VINES & GROUND COVERS: STABILIZING DISTURBED AREAS BY ESTABLISHING VEGETA77VE COVER WITH TREES SHRUBS VINES OR GROUND COVERS. TO AID IN STABILIZING SOIL IN AREAS WHERE VEGETA77ON OVER THAN TURF IS PREFERRED, TO PROVIDE FOOD AND SHELTER FOR WILDLIFE WHERE WILDLIFE HABITAT IS DESIRABLE. APPLIES IN AREAS WHERE TURF ESTABLISHMENT 1S DIFFICULT ON STEEP OR ROCKY SLOPES WHERE MOWMNG 1S NOT FEASIBLE WHERE ORNAMENTALS ARE DESIRABLE FOR LANDSCAPING PURPOSES AND WHERE WOODY PLANTS ARE DESIRABLE FOR SOIL CONSERV4770N OR TO ESTABLISH WILDLIFE HABITAT. 3.36 BLANKET MAT77NG.- INSTALLA77ON OF A PR07EC77VE COVERING OR A SOIL STABILIZATION MAT ON A PREPARED PLANTING AREA OF A STEEP SLOPE OR CHANNEL TO AID 1N 774E CONTROLLING EROSION ON CRI77CAL AREAS. 3.38 TREE PRESERVA77ON AND PROTECRON.- PR07EC77ON OF DESIRABLE TREES FROM MECHANICAL OR 07HER INJURY DURING LAND DISTURBING AND CONSTRUC77ON AC77WTY. TO ENSURE 7HE SURVIVAL OF DESIRABLE TREES WHERE 7HEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT CONTROL WATERSHED PROTECTION LANDSCAPE BEAU77FICA770N, DUST AND POLLUTION CONTROL, NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND 1S BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES 1N 7REE-INHAB17ED AREAS SUBJECT TO LAND DISTURBING AC771,177ES. 3.39 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING DEMOL177ON AND CONSTRUCTION AC77V477ES. 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 CONSTRUC770N. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WI7H THE VESCH. 3.32 TABLE 332-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA Total lbs. Per Acre Minimum Care Lawn - Commercial or Residential 175.200 lbs. - Kentucky 31 or Turf -Type Tall Fescue 95-100% - Improved Perennial Ryegrass 0-5% - Kentucky Bluegrass 0-5%D High -Maintenance lawn 200-250lbs. - Kentucky 31 or Turf -Type Tall Fescue 100%D General Slope (3:1 or less) - Kentucky 31 Fescue 128 lbs. - Red Top Grass 2 lbs. - Seasonal Nurse Crop* 20 lbs, 150 lbs. Low -Maintenance Slope (Steeper than 3:1) - Kentucky 31 Fescue 108 lbs. - Red Top Grass 2 lbs. . Seasonal Nurse Crop . 20 lbs. - Crownvetch et 20 lbs. 150 lbs. ' Use seasonal nurse crop in accordance with seeding dates as stated below: February 16th through April ...................... Annual Rye May 1st through August 15th ..................... Foxtail Millet August 16th through October ...................... Annual Rye November through February 15th ................... Winter Rye '• Substitute Sericea lespedeza for Crownvetch east of Farmville, Va. (May through September use hulled Sericea, all other periods, use unhulled Sericea). If Flatpea is used in lieu of Crownvetch, increase rate to 30 lbs./acre. All legume seed must be properly inoculated. Weeping L.ovegrass may be added to any slope or low -maintenance mix during warmer seeding periods; add 10.20 lbs./acre in mixes. TABLE 331-A LIMING REQUIREMENTS FOR TEMPORARY SITES Recommended Application pH Teat ofAerialtural Limestone below 4.2 3 tors per acre 41 to 5.2 2 torts per acre 51 w 6 1 ton per ave TABLE "1-B ACCEPTABIE TEMPORARY SEEDING PLANT MATERIA1,S 'QUICK REFERENCE FOR ALL REGIONS' wry Plamrne Dams S.9i Rbc/.) Sept 1 - Feb. 15 50/50 Mu a Anm,sl R,,. (Ulm multi-fiI & So-100 Cera1(Wl w) Rye (kol onaw Peb. 16-Apr. 30 Amlual Ryeg w-im (rnm.m mm6-nm„mt May 1- Aug 31 German Millet 50 LSClaru imllaal GENERAL SLOPE (3:1 OR LESS) TOTAL LBS PER ACRE KENTUCKY 31 FESCUE 128 LBS RED TOP GRASS 2 LBS SEASONAL NURSE CROP 20 LBS 150 LBS SEASONAL NURSE CROP FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. PERMANENT SEEDING SCHEDULE PS NO SCALE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK, 3RD ED.) EROSION CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICAT70NS 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-CONSTRUCT70N 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 SITE AT ALL TIMES. ES-5.-PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES-6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTAT70N AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7.-ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-B.-DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. General construction notes for Erosion and Sediment Control plans 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff - producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only,free of roots stumps, wood rubbish and other debris. P , 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance liance with section 13-301 of the Code of P Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 16. The developer shall reserve the ri ht to install maintain remove or convert to permanent Pe g stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary rystabilization shall be temporary seeding and mulching. Seedin is to be at 75 lbs/acre, and in the months of September to February to consist a 50150 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 801bs/lOOsf. Alternative, are subject to approved b the Count erosion control inspector. M PPr Y Y P 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95%D Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at SOlbs/100sf. Alternatives are subject to roved b the Count erosion control PP J approved Y Y inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to he repair immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17- 207B) TEMPORARY SEEDING. ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SELECTION OF THE SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR AND WILL BE APPLIED TO DISTURBED ARES THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30 DAYS. PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND SITE CONDITIONS FROM TABLES 3.31E AND 3.31C. NOTE THAT TABLE 3.31E PRESENTS PLANTS WHICH CAN BE USED WITHOUT EXTENSIVE EVALUATION OF SITE CONDITIONS; TABLE 3.31C PRESENTS MORE IN-DEPTH INFORMATION ON THE PLANT MATERIALS. TO CONTROL EROSION ON BARE SOIL SURFACES, PLANTS MUST BE ABLE TO GERMINATE AND GROW. SEEDBED PREPARATION IS ESSENTIAL. AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY FOR TEMPORARY SEEDING. TABLE 3.31A MAY BE USED TO DETERMINE THE ACTUAL NEED ALONG WITH SUGGESTED APPLICATION RATES: FERTILIZER SHALL BE APPLIED AS 600 LBS/ACRE OF 10-20-10 (14 LBS/1,000 SO. FT.) OR EQUIVALENT NUTRIENTS. LIME AND FERTILIZER SHALL BE INCORPORATED INTO THE TOP 2 TO 4 INCHES OF THE SOIL IF POSSIBLE. IF THE AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED, NO FURTHER ROUGHENING IS REQUIRED. WHEN THE AREA IS COMPACTED, CRUSTED, OR HARDENED, THE SOIL SHALL BE LOOSENED BY DISCING, RAKING, HARROWING, OR OTHER ACCEPTABLE MEANS. TRACKING WITH BULLDOZER CLEATS IS MOST EFFECTIVE ON SANDY SOILS. THIS PRACTICE OFTEN CAUSES UNDUE COMPACTION OF THE SOIL SURFACE, ESPECIALLY IN CLAYEY SOILS, AND DOES NOT AID PLANT GROWTH AS EFFECTIVELY AS OTHER METHODS OF SURFACE ROUGHENING. SEED SHALL BE EVENLY APPLIED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER OR HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO MORE THAN liINCHES DEEP. SMALL SEEDS, SUCH AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO MORE THAN J INCH DEEP. OTHER GRASSES AND LEGUMES SHOULD BE PLANTED FROM }INCH TO } DEEP. SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED ACCORDING TO MULCHING, STD. & SPEC. 3.35, EXCEPT THAT HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED ADEQUATE. STRAW MULCH SHOULD BE USED DURING THESE PERIODS. AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE RE -SEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE CONTROL MEASURES: PURPOSE: T THE PURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO GRADE THE SPRING HILL VILLAGE SITE FOR FUTURE DEVELOPMENT. EROSION AND SEDIMENT CONTROL MEASURES: THE TOTAL AREA TO BE DISTURBED WITH THIS PHASE OF DEVELOPMENT IS 2.10 ACRES. IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, EXISTING SEDIMENT BASINS, AND SILT FENCES EXISTING SITE CONDITIONS: WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL PART OF THIS SITE HAS A WOODS GRASS COMBINATION AND SLOPES TO THE SOUTH-WEST. THE SITE IS LOCATED TO THE LAND DISTURBANCE ACTIVITIES. TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE NORTH OF IVY ROAD (RTE 250). THE MAJORITY OF THE SITE DRAINS NORTH-EAST OF THE PROPERTY. STRIPPED FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE ON SITE ADJACENT AREAS: AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL THIS SITE IS BORDERED TO THE EAST BY AN EXISTING OFFICE BUILDING AND TO THE WEST BY EXISTING WHITE GABLES AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION ACTIVITIES HAVE CEASED. PERMANENT CONDOMINIUMS. THE CHESAPEAKE AND OHIO RAILROAD IS JUST NORTH OF THE SITE AND IVY ROAD (RTE 250) TO THE SOUTH SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. OF THE SITE. OFFSITE LAND DISTURBANCE: SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. IMPROVEMENTS TO BE MADE ON PRIVATE WHITE GABLES LANE INCLUDE REPAVING AND TWO (2) PARKING BAYS. TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN CRITICAL AREAS: SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING TREE PROTECTION FENCING AND SILT FENCE SHALL BE MAINTAINED ALONG THE PROPERTY LINES TO THE EAST, NORTH, AND OF THOSE AREAS. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. SOUTH OF THE SITE TO PROTECT THE ADJACENT PROPERTIES AND ONSITE TREES. CONSTRUCTION ENTRANCE: SOILS: A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND SOILS MAP IS INCORPORATED INTO EROSION CONTROL PLAN PHASE I WITH SOILS DATA INCLUDED WITH THIS NARRATIVE. EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY SEQUENCE OF CONSTRUCTION: MOTOR VEHICLES OR RUNOFF. PHASE I (BUILDING PAVILION II): CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. TRANSPORTED ONTO PUBLIC ROADWAYS. 2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PROTECTION FENCING SHALL BE SILT FENCE: INSTALLED. 3. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO THE INSPECTOR ON THE PROJECT. SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED 4. THE PROPOSED CONSTRUCTION ENTRANCE WITH WASH AREAS SHALL BE INSTALLED AS SHOWN ON THE PLANS. THE AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE. TO DECREASE CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER PERMANENT STABILIZATION: SEDIMENT IS REMOVED IN THIS MANNER. THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION 5. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL SHEET. THIS INCLUDES (3) AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER SEDIMENT TRAPS, WIRE SILT FENCE, AND DIVERSION DIKES. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. M MATERIALS. TO IMPROVE WLDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION MAT IALSIES, 6. ONCE ALL THE PHASE I EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE EROSION CONTROL PHASE I ALL AREAS VLF RECEIVE A PERMANENT VEGETATIVE COVER. PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR CAN BEGIN THE MINIMUM TEMPORARY SEEDING: GRADING OPERATIONS. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT 7. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE DUST CONTROL: THAN ONE YEAR. 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 PHASE II (BUILDING OF PAVILION IV): 8. AS THE FIRST PART OF PHASE II, THE CONTRACTOR SHALL ENSURE THAT ANY DRAINAGE INLETS INSTALLED IN THE LIFE. PREVIOUS PHASE SHALL HAVE APPROPRIATE INLET PROTECTION AS SHOWN ON THE PLAN BEFORE BEGINNING TO BUILD DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING PAVILION IV. DRAINAGE STRUCTURES SHALL OUTFALL INTO SEDIMENT TRAP #3 UNTIL THE SITE IS STABILIZED. CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE VESCH. 9. AFTER STORM DRAINAGE FOR PAVILION IV IS INSTALLED AND HAS APPROPRIATE INLET PROTECTION, SEDIMENT TRAP #2 TEMPORARY DIVERSION DIKE: CAN BE CONVERTED INTO DRY SWALE W. A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS 10.PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL OFF -SITE RUNOFF AWAY FROM UNPROTECTED SLOPES AND TO A STABILIZED OUTLET, OR TO DIVERT SEDIMENT -LADEN GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM EFFECTIVE LIVE IS 18 MONTHS. DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER ROCK CHECK DAMS: THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE VELOCITY OF THAN ONE YEAR. CONCENTRATED FLOWS, REDUCING EROSION OF THE SWALE OR DITCH. LIMITED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS; SHOULD NOT BE USED IN LIVE STREAMS. :BUILDING OF PAVILION VI III PHASE ( ) STORM DRAIN INLET PROTECTION: 11. AS THE FIRST PART OF PHASE III THE CONTRACTOR SHALL ENSURE THAT ANY DRAINAGE INLETS INSTALLED IN THE THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS OR CURB INLET PREVIOUS PHASE SHALL HAVE APPROPRIATE INLET PROTECTION AS SHOWN ON THE PLAN BEFORE BEGINNING TO BUILD PAVILION VI. DRAINAGE STRUCTURES SHALL OUTFALL INTO SEDIMENT TRAP #3 UNTIL THE SITE IS STABILIZED. STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO DRAINAGE AREAS NOT 12. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL EXCEEDING ONE ACRE AND NOT INTENDED TO CONTROL LARGE CONCENTRATED STORMWATER FLOWS. GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN TEMPORARY SEDIMENT TRAP: DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT ( UNDISTURBED FOR LONGER A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW THAN ONE YEAR. MOST TO THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. TEMPORARY SEDIMENT BASIN: PHASE IV: A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH IS FORMED BY 13.ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL THE CONTRACTOR CAN CONVERT SEDIMENT CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT IS USED TO DETAIN TRAP 3 TO DETENTION BASIN 'B'. AFTER THE INSPECTOR HAS GIVEN APPROVAL SEDIMENT TRAP 1 CAN BE REMOVED. # # SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER FOR ENOUGH TIME TO ALLOW MOST OF THE NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. SUSPENDED SOLIDS TO SETTLE OUT. IT CAN BE CONSTRUCTED ONLY WHERE THERE IS SUFFICIENT SPACE AND 14.MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, APPROPRIATE TOPOGRAPHY MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. QUALIFIED PROFESSIONAL. Q 15. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE OUTLET PROTECTION: STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM DRAIN OUTLETS TO REDUCE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION EROSION AND UNDER-CUTTNG FROM SCOURING AT OUTLETS AND TO REDUCE FLOW VELOCITIES BEFORE STORMWATER OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. ENTERS RECEIVING CHANNELS BELOW THESE OUTLETS. CULVERT INLET PROTECTION: A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS SEDIMENT FROM ENTERING, ACCUMULATING IN AND BEING TRANSFERRED BY THE CULVERT. IT ALSO PROVIDES EROSION CONTROL AT CULVERTS SOIL DESCRIPTION DURING THE PHASE OF A PROJECT WHERE ELEVATIONS AND DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL 19B-MINNIEVILLE LOAM-2% TO 7% SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP CONTROL MEASURES TO BE INEFFECTNE. HILLSLOPES. MODERATE RUNOFF, WITH MODERATE PERMEABILITY. SAFETY FENCE: A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL MEASURE. 36C -HAYESVILLE LOAM-7% TO 15% SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPES. MODERATE RUNOFF, WITH MODERATE PERMEABILITY. PERMANENT STABILIZATION. PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS PER THE PERMANENT STABILIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE. AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED AREAS OF THE SITE WILL BE LIMED, FERTILIZED, AND SEEDED AS PER CURRENT VDOT STANDARDS. THIS SHALL CONSIST OF THE FOLLOWING: TOP SOIL - 2" DEPTH LIME - 2 TONS/ACRE FERTILIZER - 600 LBS/ACRE OF 15-30-15 SEED - ERNST 5311 CONSERVA77ON SEED MIX - ERNMX-114 (45 LBS/ACRE PENNLAWN CREEPING RED FESCUE, 37.5 LBS/ACRE ARGILS KENTUCKY BLUEGRASS, 37.5 LBS/ACRE PARK KENTUCKY BLUEGRASS, 15 LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE PERENNIAL AFTER THESE AREAS ARE STABILIZED THEY WILL BE MOWED AND MAINTAINED ON A REGULAR BASIS. MAINTENANCE IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS. - A. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. C. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP OF THE BARRIER. D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. STORMWATER RUN-OFF CONSIDERATIONS.- STORMWATER MANAGEMENT • 7HE STORMWATER RUNOFF FROM THIS PROJECT DRAINS TEMPORARILY TO THE TRAPS THE SEDIMENT TRAPS WILL BE REMOVED AFTER THE DEVELOPMENT OF THE WHITE GABLES PROJECT OUTLET PROTECTION SIZING TYPE LENGTH WIDTH DEPTH OP1 VDOT CLASS 1 A 33.5' 3' 1. 5' OP2 VDOT CLASS 1 A 4' 2.5' 1. 5' SCOTT/R. CT?LLINSZ Lic. No. 0357911c:_ A 5/24/21 ,4f I z 0 a rrAA U) of Zto w O 0 z O N m �/I� > W U) W I-_ F z z w w 2: 2: E E 0 0 �� 0 0 U U U1 U1 0 0 0 0 a a N W N N a Z- N v o ON M Try z Q 0 V_ rn J 00 ZcM 0- O) N G C IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII M � / U\) 1 11 1 N O N z ''-' N CL,LJ I -I Q G Q J Z Q Z _J W z U) p aRaIIIIIIIIIIIIIIIIIIIIIIIIN LU Q IY 2!z O 0 J Q UU 12�J _ 0-z U LU W �E W Y �� c) w W V / LU U) Ul O 1"1 W Q U) Z� 2: clC IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII U) � w J w J CO J Q (Qn V O W 0 O N H-1 U r, 3: I-_ = W JOB NO. 202187 SCALE AS NOTED SHEET NO. 3 U5/24/21 P:nEd conslructi on entrance forerosion control plans 1.6 1992 3.01 1992 3.05 1992 3.05 1992 3.07 SAFETY FENCE "S�ROG qN D MIN.�!:CE55 3' S4-2A ASPT TOP CONSTRUCTION OF A SILT FENCE CONSTRUCTION OF A SILT FENCE GRAVEL CURB INLET SEDIMENT (WITH WIRE SUPPORT) (WITHOUT WIRE SUPPORT) FILTER ....■■ O 6' NIN. 2+A AGGRECAfE BASE 1. SET POSTS AND EXCAVATE A 4''X4" 2. STAPLE WIRE FENCING 70 THE POSTS. 1. SET THE STAKES. 2. EXCAVATE A 47X 4" TRENCH TRENCH UPSLOPE ALONG THE LINE UPSLOPE ALONG THE LINE OF ,...... 0 PROFILE OF POSTS. STAKES. _-` MEM ON 6'MAX. `_J •■. EMIN STONE 70' MIN. NEESE ASPHALT ONSTRUC71ON ASPT PAVED <..C6s WASHRACX EXISTING 2% PAVEMENT FL- LU .r (. �-POSITIVE DIWNAG / : JJ •NUS EXTEND FULL WIDTH `---0 I / - . TO SEDIMENT f / _ Z N N Of INGRESS AND EGRESS Iu�I, III�1,,. / g Z z TRAPPING DEVICE OPERATION � - 4" � T O d LU LU ELAN 1 1 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT / a ,w�, FLOW -IIII II III I TO STAKES AND EXTEND THE EXCAVATED SOIL. (/� � In O O IT INTO THE TRENCH. v� v 0 } } 17' 41N-�ppSnIVE DRNNAGE 4" Z U)O Z Z 21 TO SEDIMENT GRAVEL FILTER 12" 0 a � � (RAPPING DEVItl O ��-y •�' - -'�" "'-' " 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE PERSPECTIVE VIEW RUNOFF WATER WIRE MESH ZO W U U FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. ( s / 0 (n LitFILTERED WATER Ln L- Ln Ln �T yv-L•''•�r''' ;�: ,K.Sy ,ILTER CL0 H ILL ILL A niamann11 Nate Isp h E, of f nIC111111L'f Llt nL't0BH1 Nltfl T IIInWfll�ll I incallcock m IIII �_ IIII ..,..:� � :• �..� o 0 a � ° a a _ :,.Hc :•• ..rr-,';'" 2- einao9 cah t .+y,ph mn a Nroeh ho>e lath a chawAa of 1 ' inches- foe adaputt o ; . �• wnlanl pl r•`m e. \1'a,h Nafn uN+1 be coned aN'nc hrnu the aW sue to m / FLOW �, r'�'S <-. : •• local .eNhw_ sea to lauort secWupll .All saWuaN sha0 be pa'mle<I how / e o a J •„yam ,.T..LU _ �vv al[awq sfam<hains. chtchea of Watacoln <t,. _ --- � ! t - II II III _II,,,- - IIIFL,_I J a 4 PAVED WASH RACK �~ �I SEDIMENT (IIII .IT z�'t - SHEET FLOW INSTALLATION a / (PERSPECTIVE VIEW) CONCRETE GUTTER Tp^ q\\\ Ill, FLOW I' I ` CURB INLET suer rWs�x IyI Ye I / A g A \\ EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 6' LTA%. eau ,E weas) FLOW SPECIFIC APPLICATION- - - wrhmo,u 5' MIN. uNlau.�ss� �� A' I• fSla !1!: FILTER FABRIC �/// � +(��, p,�} J. �4 '. THIS METHOD OF INLET PROTECTION I5 APPLICABLE AT CURB INLETS w N N N PERSPECTIVE VIEW PERSPECTIVE VIEW WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE F PLASTIC FENCE METAL FENCE II i I INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED 0 AREAS. o+ m In WIRE I POINTS A SHOULD BE HIGHER THAN POINT B. Source: Adapted from Conwed Plastics and Plate 3.01-1 I � I Jl1IuJ I DRAINAGEWAY INSTALLATION GRAVEL SHALL BE VDOT #3, J357 OR 5 COARSE AGGREGATE. VDOT Road and Bridge Standards (FRONT ELEVATION) Source: Adapted from Installation of Straw and Fabric Filter Source: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-1 Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-2 Source: Va. DSWC Plate 3.07-6 z C7 1992 3.11 1992 3.07 1992 3.18 1992 3.36 1992 3.38 j cM SILT FENCE DROP INLET TEMPORARY RIGHT-OF-WAY PIPE OUTLET CONDITIONS TYPICAL ORIENTATION OF FENCING AND ARMORING M PROTECTION DIVERSIONS A A TREATMENT - 1 � j 2 X 4' WOOD FRAME DROP INLET (SOIL STABILIZATION BLANKET) / WITH GRATE VDOT # 1 (J/ COARSE AGGREGATE Ig' MIN• . _-=' -..�� -� ado ------------- ' SHALLOW N SLOPE 1.5' MAX. FRAME EIO :.' ,; PIPE OUTLET TO FLAT ON SyAELQIy SLOPES, STRIPS OF CY) AREA WITH NO DEFINED t . NETTING PROTECTIVE COVERINGS DRIP LINE I N CHANNEL y� TTHHE SLOPE PLIED ACROSS w 3' MIN. J �PLAN VIEW ; Q W _ -I SNOW FENCE Q GATHER LU EXCESS g' MINIMUM I� L a BERM I / I J 7 Q AT CORNERS WHERE THERE IS A BERM AT THE TOP OF THE SLOPE, L VI �/ 0 % - BRING THE MATERIAL OVER THE BERM AND ANCHOR IT LU_ d BEHIND THE BERM. O U)PERSPECTIVE VIEWS TYPICAL GRAVEL STRUCTURE SECTION A -A FILTER CLOTH KEY N 8" RECOMMENDED FOR PERIMETER STEEP fM I Uj Q SLOPE � STAKE A ON fiT� SLOPES, APPLY BOARD FENCE ow/*'t O ` O PROTECTIVE COVERING PARALLEL J FABRIC 1 6 TO THE DIRECTION OF FLOW < 3d (MIN.) AND ANCHOR SECURELY. CORD FENCE V COMPACTED SOIL A O ?,e 00 PL SMC FENCE = z -------------- III �I' MIN, o U ; ; CORRECT METHODS OF TREE FENCING LU q _ C PIPE OUTLET TO WELL G DEFINED CHANNEL c I� I8 MI PLAN VIEW BRING MATERIAL DOWN TO A LEVEL AREA BEFORE LU 4' '' I tl�tIq (I+�r Y ELEVATION OF STAKE AND TERMINATING THE INSTALLATION. TURN THE END UNDER 4' AND STAPLE AT If INTERVALS. W FABRIC ORIENTATION DETAIL A L a ,:::..:;,;:::;`.. ;':,..Tr fl I-0-6 DITCH }" FLOW vJ O O SPECIFIC APPLICATION g MINIMUM d IN DITCHES, APPLY PROTECTIVE COVERING I_ ri V) PARALLEL TO THE DIRECTION OF FLOW. O THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE SECTION A -A USE CHECK SLOTS AS REQUIRED. AVOID FILTER CLOTH KEY IN W-B"; RECOMMENDED FOR ENTIRE PERIMETER JOINING MATERIAL IN THE CENTER OF INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THE DITCH IF AT ALL POSSIBLE. // ` - iMalAf� LLI THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABiON A'n iaeBM LU EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT TYPICAL EARTHEN STRUCTURE 2. BASKET, OR CONCRETE. ,celhr+ La IS THE LENGTH OF THE InPRAP APRON AS CALCULATED ° CORRECT TRUNK ARMORING U APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS USING PLATES 3.18-3 AND 3.18-4. aFM IN STREET OR HIGHWAY MEDIANS. 3. It = 1.5 TIMES THE MAXIMUM STONE DIAMETER. BUT NOT LESS THAN 6 INCHES. TRIANGULAR BOARD FENCE W Source: N.C. Erosion and Sediment Control Source: Va. DSWC Plate 3.11-1 LU Source: Va. DSWC Plate 3.18-1 Planning and Design ManualSource: Va. DSWC Plate 3.38-2 , 1988 Plate 3.07-1 Source: Adapted from Ludlow Products Brochure Plate 3.36-1 V O w CD TEMPORARY DIVERSION DIKE - T + w J Compacted Sail 0 _ a U) JOB NO. 18" in -Flow 202187 - I „s'::;•;`:.+_+:+i'i'!_'>`; i'hfflifli . I - I I SCALE - - _ AS NOTED 4.5' min. SHEET NO. 4 11ROINION 8, SEDIMENT CON OS EROSION CONTROL * HANDBIOOKRSPECIFICAAON NUMBER TROL SA SAFETY FENCE 3.01 SOIL CE CONSTRUCTION ENTRANCE 3.02 TYPE CR CR CONSTRUCTION ROAD STABILIZATION 3.03 198 20'& VARIABLE WIDTH WATERLINE VEPCO EASEMENT -I SF �f 7y SILT FENCE 3.os EASEMENT; TYP. � (iD.B.2561-704)� I II II I lP STORM DRAIN INLET PROTECTION 3.07 S•B• 3059-532 DD TEMPORARY DIVERSION DIKE 3.09 SOIL RW I► TEMPORARY ROW DIVERSION 3.11 \ TYPE ST SEDIMENT TRAP 3.13 - / 14B SB SEDIMENT BASIN 3.14 OP OUTLET PROTECTION 3.18 I \ � RR RIPRAP 3.19 U77LITY STREAM CROSING 3.25 \ �/ \, 2 TS ---�- TEMPORARY SEEDING 3.31 y LIMITS OF PRIV TE 48 / -- PS PS PERMANENT SEEDING 3.32 3 ACCESS ESMT• - ------------ - -- - O I NOTE: SILT FENCE, SAFETY FENCE, AND / TP 1 TREEPROTEC77ON 3.38 TREE PROTECTION SHALL BE INSTALLED SYCAMORE \ AT LIMITS OF DISTURBANCE. THESE ARE SOIL TYPE BOUNDARY (TYP. OFFSET FOR GRAPHICAL PURPOSES. " 20' SEWER SMT. DC DC DUST CONTROL 3.39 DRAINAGE DIVIDES ARE MEASURED AT THE ( • DB 1896 P.2 7(plat) SPRUCE�CED \ LIMITS OF DISTURBANCE OR DIVERSION DB 738 P. 3 3(PIC10 I BM SOIL STABILIZATION BLANKET 3.36 DIKE. -- 0 1 20' WATERLINE ACCESS ES VA IE§; I EASEMENT ~ �) 20" SPRUCE _ __ _ _ SAF (�ZF-� /. l 11 1 MIN. � i (D.B. 3059-532) v" `" - - • , CONTRACTOR STAGING \ L. W/ WIRE - - - - - - _ IP NC ARK 36 27 DB _ SPRUIWITH FUELING TANK, DUMPSTER,\ TP I I � \ � �. p,� PI (- CEDAvQ 1 1 SUPPORT � wHrTE � _ _ _ - - - , T=599.27' AND PORTA-POTTIES - 30, P �AB ((�� RIVAT LES LAN f� - - PROPOSED SAFETY I \ ` , - - - - - - -'� ACCESS EASEMENT V • FENCE AROUND 1 S _ SAF \ SEDIMENT TRAP DD W/ WIRE Ilk \ I SUPPORT SAF-< ♦ ' 0 DID o ; +. ` o SOIL i.+/+ / N\I DATOST1=o.48AC ' � /' /' TYPE ' 1 , / BM i++l+a .�* .�.�.� / ♦ ♦ ♦ ♦ i \ ♦ ♦ ♦ ♦ / 36C T�_ r * .1(+ _ _ _ � TYPE 11 / / / / - _ _ - - / / / �� ++�{♦ / -�� - 19B 1 I / / - / ♦ ♦� ♦ ♦ ♦ //�/ _ I� �i L . +tl'.{. � - A 1 1 / / �� / / / /♦ �� +j++4+ / / / �- / N AC \ ❑ DA TO ST 2 = 0.43 AC / / i ST3 CONCRETE WASH OUT AREA � � � ' 7 � / , ' �� / / +x •I++i � / / I P \ \ DC DC DRAINAGE DIVIDE (TYP.+i+ 1 s I AVEDWASH RACK (TYIP) ■� ■� / °°gam . +' +1+ +/ I / / ' / ' / FLOW ARROW (TYP.) RWD ,yam 30'� ` \ . / - - / ST2�/ / / / ' / / _ L_ x-x -x-x-x ♦ MAGNOLIA --_ -----=------- - - - -- ------ / / \ \ • •-= T --- --- -_ '---- 4 /oy°y / }++ / PROPOSED SAFE 18 /--_----- ---IF- - - _ i o • � AG LI A � _ - �L- I � � // / D SEDIME / c AROUND - DD €X-X-X-X-X-X X-X-X�(�( "€ 1"€ n 'hnrnm M m mm nmmhmrc € �MmM " fi m ROBBER/ASSOCIATES OHE- OHS L / CE 12'X]0' IN. �'"""" PROPOSED SAFETY FENCE -- -- - - - -- -- -- -_ _ _ _/ ZONING. CO �OMMERC L OFFICE' TP NOTE: THIS CONSTRUCTION ENTR NCE SHALL BE SF AROUND SEDIMENT TRAP TAX MAP 60 PARCEL 25 W/ WIRE IMITS OF DISTURBANCE (TYP.)- INSTALLED, OPERATED, AND MAINTAINED BY THE DISTURBANCE yr r �� CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS SUPPORT \ AREA SHALL UTILIZE THIS CONSTRUCTION ENTRANCE. / TPO/ ' Sediment Trap design #1 Sediment Trap design #2 Sediment Trap design #3 drainage area (acres) (< 2 ac) 0.48 YA"' drainage area (acres) (< 2 ac) 0.43 °AR B drainage area (acres) (< 2 ac) 0.65 trapwlumes: CREST OF STONE WEIR gygE trap volumes: CREST OF STONE WEIR ,mBE• trapwlumes: CRIMINALCREST OF STONE WEIR elevation (ft) area (st) wlume(ct) volume(cy) GUY. G elevation (ft) area (sf) wlume(cf) volume(cy) M,ND elevation (ft) area (sD vcIlume(cf) volume(cy) °aPONND \ 593.00 256.0 0 0.0 - 601 229 0 0.0 586 780 0 0.0 y 10 ' 594.00 756.0 484 17.9 DRYSTORAGE xAELE / // �sa000- 602 739 460 17.0 DRY STORAGE - „ rAauBlE• 587 1253 1,007 37.3 DRY STORAGE 595.00 1018.0 1,368 50.7 603 1341 1,485 55.0 588 1808 2,529 93.7 604 1967 3,129 115.9 589 2423 4,637 171.8 / 596.00 1309.0 2,528 93.6 L,RRR CLOIN tl1GNAL a• uAx. WET STORAGE 'ETSTOIAGE O O O 0.0 0RAGEO O O 0.0 TRD) ) a• wx - (E%GARD) QQIXD /YRa OLDIN ORDINAL FLIER CLOTX ORIGINAL �/9 DUD'. .D CN NO / ELN. ELL , I •-WERIAR a13-I cDWaE IS(iiDG,R� cl S I RPRAP wet storage: wet storage: wet storage: 9 .SEE PUR aI3-I corRSE AO#GAR� DIA55I RFRAP -SEE PUR 3.13-+ cDAasE ADQIEGAR� cuss I RiaAv wet storage required (cy) (67*DA) 32.2 wet storage required (cy) (67*DA) 28.8 wet storage required (cy) (67*DA) 43.6- bottom of stone weir (ft) 594.09 bottom of stone weir (ft) 602.31 bottom of stone weir (ft) 587.11 wet storage provided at this elevation (cy) 32.2 wet storage provided at this elevation (cy) 28.8 wet storage provided at this elevation (cy) 43.6 RAPHIC SCALE slope of wet storage sides 2:1 dry storage dry storage required (cy) (67*DA) 32.2 crest of stone weir 595.00 dry storage provided at this elevation (cy) 32.2 slope of dry storage sides 2:1 slope of wet storage sides 2:1 weir length (ft) (6xDA) 2.9 bottom of trap elevation (ft) 596.00 dry storage: bottom trap dimensions: 13'X40' dry storage required (cy) (67*DA) 28.8 top of dam elevation (ft) 596 crest of stone weir 603.00 top width of dam (It) 6' dry storage provided at this elevation (cy) 28.8 top trap dimensions 25563' Islope of dry storage sides 2:1 slope of wet storage sides 3:1 weir length (ft) (6xDA) 2.6 bottom of trap elevation (ft) 601 dry storage: bottom trap dimensions: 47c91' dry storage required (cy) (67*DA) 43.6 top of dam elevation (ft) 604.00 crest of stone weir 587.88 top width of dam (ft) 6' dry storage provided at this elevation (cy) 43.6 top trap dimensions 15'x144' slope of dry storage sides 3:1 weir length (ft) (6xDA) 3.9 z a 10 20 40 bottom of trap elevation (ft) 586 bottom trap dimensions: 2067 top of dam elevation (ft) 590 ( IN FEET ) top width of dam (ft) 8' = 1 inch = 20 ft. top trap dimensions 47'X88' SCOTT/R. CBLLINSZ Lic. No. 035791 c� pow 5/24/21�� t �`S'InArnr. ��G 0' DRA 896 P.23 V/ Z z o L LU i o ; z ' O 38 P. 3 o L > IL LU --------'i ------ C zz z S W W 0 0 2 z z O O i Ln Ln � o 0 ' a a .. .. Qcli rn m L0 Q L9 0*) J CM (Yj CA G LUN U) (!� Q � � 2 CD r � r N Ln SAF N z Z N LUO Q _ o J J LU Q SF U C0 W/ WIRE ® LJLJ Q Q UPPORT o z Q J z Q Q TY FENCE Q NT TRAP J 1. W 0L Y [___ r z L o U OU1 LU w Q Zw�� Cry w u) U) (.r) W o'd U LU J z W O Joao 0 O w LU O N HT� U + w J H 0 W JOB NO. 202187 ea SCALE 1 rI=20' SHEET NO. 5 11ROINION 8, SEDIMENT CON OS EROSION CONTROL * HANDBIOOKRSPECIFICATION NUMBER 1ROL SA SAFETY FENCE 3.01 CE CONSTRUCTION ENTRANCE 3.02 SCOTT/R. CBLLINSZ CR CR CONSTRUCTION ROAD STABILIZATION 3.03 U Lic. No. 035791,E 20'& VARIABLE WIDTH ,.o Q SF �f # �F SILT FENCE 3.05 VEPCO EASEMENT r-I pow 5/24/21 S c 20 WATERLINE D.B.2561-704 r �SSTrATAT B�� IP STORM DRAIN INLET PROTECTION 3.07 EASEMENT; TYP. I II I I I I I DD �� TEMPORARY DIVERSION DIKE 3.09 D.B. 3059-532 J L RW� TEMPORARY ROW DIVERSION 3.11 / ST SEDIMENT TRAP 3.13 \ � / F SB SEDIMENT BASIN 3.14 a LANE I OP OUTLET PROTECTION 3.18 / FARE RR RIPRAP 3.19 I / o i U77LITY STREAM CROSING 3.25 cam) w� o TS ---�- TEMPORARY SEEDING 3.31 p 0 LIMITS OF PRIV TE PS PS PERMANENT SEEDING 3.32 48 / 3 ACCESS ESMT. M k O1 TREE PROTECTION 3.38 NOTE: SILT FENCE, SAFETY FENCE, AND TREE PROTECTION SHALL BE INSTALLED ORE DC DC DUST CONTROL 3.39 AT LIMITS OF DISTURBANCE. THESE ARE 30" 0 20' SEWER SMT. W I OFFSET FOR GRAPHICAL PURPOSES. DR 1896 P.2 7(plot) BM SOIL STABILIZATION BLANKET 3.36 DRAINAGE DIVIDES ARE MEASURED AT THE SPRUCE/GED \ LIMITS OF DISTURBANCE OR DIVERSION DB 738 P. 3(plat) 3 I DIKE. s9 LIMITS 6F PUBL�C 20' WATERLINE s i o I � o EASEMENT / v IvC.,E ES� VA IE6, ENT l MIN. (D.E. 3059-532) 20" SPRUGE _ _ _ -- SAF I ---- --- - - - - - 11 �F" ,-J • \ - \ \ DBL. W/ WIRE \- - - - - - _ IP _ _ rn m In 2 SUPPORT - - _ _ _ � " / SFWITH FUELING TANK, DUMPAREA \ TP I ` STER, MAP E CEDAR ^� r WHITE q p' BLE'S n - - I CONTRACTOR STAGING AND PORTA-POTTIES \ \ \ ` \ - - - - - - - 30' PRIVATI- ACCESS EASELATN - - > ✓ !I ` PROPOSED SAFETY E - - - - _ SAF WIRE FENCEAROUND - W/ ' ♦x-X-�j k k k SEDIMENTTRAP DIDSUPPORTSUPPORT ♦ 1 \ \\\ Xxk SAF � � � ,_ _ ♦♦ /' 1 � PS O IVIr IP ' � � \ I Co / ♦ PS - - / �� ♦ ♦ i �/ - IP �L - / DID CA � LU FLOW ARROW (TYP.)' � / � `I y' r \ �J�i / � I � i I'1 (n - �M V>� Q 6 Ti=0.48ACCD 1 - �� 0 W I --I �,1 Q Q DA TO ST 2 = 0.43 AC , ' / T / PAVILION1 / 3 L11 � s \ I ONCRETE `ASH OUT AREA 7 _ 1 PARKING LEVEL F ,' 1 / / / -1 L U P DC DC DRAINAGE DIVIDE (TYP. ® 1 (PHASE i) 1 I I /'� J Uj Q �A 1 DA TO ST3 0.6 A 11 i/ v/�' > U I q AVED WASH RACK (TYP.) ` , 1 / 1 } / SF LUQ I - \ '� U\ 1 , / , \1 p0°oa • / i' / I I / /// / / W/ WIRE Z SUPPORT Q ' / _ Z R D 30„ STz �' _ / M. t� r. '1 L1 J x .+� ` MAGNOLIA j -- L ---- ----------_- -- --- '-------� 1 11 // i/////, , _ a - �3 . - ' 110 J / '\ . _--- a�PR_ SED SAFETY FENCE UC G LIAEDIMENTTRAP O ----- - - _ - ` uA'w.,yuuLL.�+'CC„w,tA ♦� \ DD i _'<�� / I=-------- DD - PS --, --� eToo tJ.J v/ ` - - - - - , i I / - OF DA - / , x O 6hnnIl i2'x7o. CE ' MINS/ F� NOTE: THIS CONSTRUCTION ENTRANCE SHALL BE INSTALLED, OPERATED, AND MAINTAINED BY THE W/ WIRE CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS SUPPORT AREA SHALL UTILIZE THIS CONSTRUCTION ENTRANCE. Sediment Trap design #1 drainage area (acres)(< 2 ac) 0.48 trap volumes: elevation (ft) area (sf) volume(cf) volume(cy) 593.00 256.0 0 0.0 594.00 756.0 484 17.9 595.00 1018.0 1,368 50.7 596.00 1309.0 2,528 93.6 0 0 0 0.0 wet storage: wet storage required (cy) (67*DA) 32.2 bottom of stone weir (ft) 594.09 wet storage provided at this elevation (cy) 32.2 slope of wet storage sides 2:1 dry storage: dry storage required (cy) (67*DA) 32.2 crest of stone weir 595.00 dry storage provided at this elevation (cy) 32.2 slope of dry storage sides 2:1 ORIGINAL CREST OF STONE WEIR GROUND \ ELN. DRY STORAGE WET STORAGE (IXGAVATW) -SEE PUTS 11Y1 weir length (ft) (6xDA) bottom of trap elevation (ft) bottom trap dimensions: top of dam elevation (ft) top width of dam (ft) top trap dimensions a lA• 4., YARRRIE ICIER CLOTH ORGNAL G6ND [LN. OMM AO(AEGTECLASS I RP 2.9 596.00 13'K40' 596 6' 25'x53' ' ROBBER ASSOCIATES OHE _ DROPOSEDSAFETYFENCE - - - - ZONING: CO /�OMMERC�AL OFFICE TP AROUND SEDIMENT TRAP TAX MAP 60 PARCEL 25 / IMITS OF DISTURBANCE (TYP.)- - - -� U DL. UFFIUL Sediment Trap design #2 drainage area (acres) (< 2 ac) 0.43 vAR M E trap volumes: CREST OF STONE WEIR AA AR E elevation (ft) area (sf) volume(cf) volume(cy) GROUND aN 601 229 0 0.0 '° 602 739 460 17.0 DRY STORAGE - VARVH E 603 1341 1,485 55.0 604 1967 3,129 115.9 0 O 0 0.0 WET STORAGE a' N4U. (ElmwwTEo) CLOTH CRIONAL \FOYER NO CR fLMN. Wet storage: •SEE PUTE 113-t COu E AOGREGnTE" CUSS I RPRAP wet storage required (cy) (67*DA) 28.8 bottom of stone weir (ft) 602.31 wet storage provided at this elevation (cy) 28.8 slope of wet storage sides 2:1 weir length (ft) (6xDA) 2.6 dry storage: bottom of trap elevation (ft) 601 dry storage required (cy) (67*DA) 28.8 bottom trap dimensions: 4'x9l' crest of stone weir 603.00 top of dam elevation (ft) 604.00 dry storage provided at this elevation (cy) 28.8 top width of dam (ft) 6' slope of dry storage sides 2:1 top trap dimensions 15'x144' Sediment Trap design #3 drainage area (acres) (< 2 ac) 0.65 trap volumes: elevation (it) area (sf) volume(cf) volume(cy) 585 426 0 0.0 586 836 620 22.9 587 1335 1,695 62.8 588 1897 3,303 122.3 589 2518 5,503 203.8 wet storage: wet storage required (cy) (67*DA) 43.6 bottom of stone weir (ft) 587.53 wet storage provided at this elevation (cy) 43.6 slope of wet storage sides 3:1 dry storage: dry storage required Icy) (67*DA) 43.6 crest of stone weir 587.41 dry storage provided at this elevation (cy) 43.6 slope of dry storage sides 3:1 CR10Wl CROIIND aw.. -SEE PUTE 3.13 1 - / i J i TP01 ' CREST OF STONE WEIR � ' - DRY STORAGE - p VARVRF - .� / , /5E000- WETSTORAGE L FLYER CLOTH ..W. / EL ELN. COeRSE AGGREGATE" CUSS I RIPRAP G APHIC SCALE 10 20 40 weir length (ft) (6xDA) 3.9 0 bottom of trap elevation (ft) 585 bottom trap dimensions: 16x48' i top of dam elevation (ft) 590 ( IN FEET ) top width of dam (ft) 811 inert = zo ft. top trap dimensions 47'X88' ' r'1 LU Q w Q LU LU U) Lr) U) J LU106 W CO O J Q Q 0 0� O w LU / O HT� lJ + w J H 0 W j CL. In JOB NO. 202187 80 SCALE 1 rr_20E SHEET NO. 6 11ROINION 8, SEDIMENT CON OS EROSION CONTROL * HANDBIOOKRSPECIFICATION NUMBER 7ROL SA SAFETY FENCE 3.01 CE CONSTRUCTION ENTRANCE 3.02 CR CR CONSTRUCTION ROAD STABILIZATION 3.03 SILT FENCE 3.05 r-I I II I i lP STORM DRAIN INLET PROTECTION 3.07 DD �� TEMPORARY DIVERSION DIKE 3.09 \ J L RW� TEMPORARY ROW DIVERSION 3.11 _ ST SEDIMENT TRAP 3.13 \ SB O 0 SEDIMENT BASIN 3.14 / U_M OP OUTLET PROTECTION 3.18 / FARE RR RIPRAP 3.19 I / CD �� UTILITY STREAM CROSING 3.25 -` TS ---�- TEMPORARY SEEDING 3.31 �\ PS PS PERMANENT SEEDING 3.32 y 48 / O�1 TREE PROTECTION 3.38 / M ----- ---i� NOTE: SILT FENCE, SAFETY FENCE, ANDYCAMORE \ ODC DC DUST CONTROL 3.39 ) TREE PROTECTION SHALL BE INSTALLED AT LIMITS OF DISTURBANCE. THESE ARE 30 I OFFSET FOR GRAPHICAL PURPOSES. I BM SOIL STABILIZATION BLANKET 3.36 SPRUCE/CE� / \ DRAINAGE DIVIDES ARE MEASURED AT THE / I LIMITS OF DISTURBANCE OR DIVERSION DIKE. / �J�Siv VV I \ �) 0„ SPRUCE SAF II ---- / 1 \ 24 - - _ --- W/WIRE ------ _ - _ �L. CONTRACTOR STAG INGAREA - TP\ \ 27 DB A� / (SUPPORT y�IP NC ARK I I SFWITHFUELING TANK, DUMPSTER, I MAPLE CEO � Ip � � WHITE WAB T-599.27' - w LES - - AND PORTA-POTTIES \ \ 3D' PRIVATE ACCESS L q� - i EASEMENT - - -- -- • S E ---- SAF SF \ W/ WIRE SUPPORT SAF PS \IP , AIW \ IP \ FLOW ARROW (TYP.) o r ri i 48 AC� I \ \ 3•'000 1 P"AVILION IV 1 PAVILION II CONCRETE WASH OUT AREA PARKING LEVEL FFE 60 PARKING LEVEL FFE=607 00 1 / p / �V 1 (PHASE 2) �' 1 (PHASE i) DA TO ST O. AC - j If DRAINAGE DIVIDE (TYP.) 3 = 97 9/ PAVED WASH RACK( TYPJ - U 1 /' �1 °a°o • / / I �/ / / - - W/ WIRE I SUPPORT ORWD „ 30 MAGNOLIA AG UA __-_----- -- -----� - - I� 11 11 11 fi OH O�14E _r m� mm� m �_,,1'"': m� �mI/ ��mrt � oP /' ROSSER'ASSOCIATEB � � OHS- i / ZONING: CO /�OMMERClL OFFICE TP ' ' _ 5qF PS iz'x70'MIN. --------- - - °6� CE NOTE: THIS CONSTRUCTION ENTRANCE SHALL IMITS OF DISTURBANCE (TYP.)- - / INSTALLED, OPERATED, AND MAINTAINED it THE SF TAX MAP 60 PARCEL 25 E W/ WIRE CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS SUPPORT U DL. Ur r i �, AREA SHALL UTILIZE THIS CONSTRUCTION ENTRANCE. Sediment Trap design #1 drainage area (acres) (< 2 ac) 0.48 trap wlumes: elevation (ft) area (sf) volume(cf) volume(cy) ORIGINALD 3r 593.00 256.0 0 0.0 594.00 756.0 484 17.9 595.00 1018.0 1,368 50.7 596.00 1309.0 2,528 93.6 I 0 0 0 0.0 wet storage: wet storage required (cy) (67*DTI) bottom of stone weir (It) wet storage provided at this elevation (cy) slope of wet storage sides dry storage: dry storage required (cy) (67*DA) crest of stone weir dry storage provided at this elevation Icy) slope of dry storage sides YARRBLE CREST OF STONE WEIR I w RE' I DRYSTORAGE WET STORAGE (E= ATED) -SEE PLATE 3.13-1 32.2 594.09 32.2 2:1 weir length (ft) (6xDA) bottom of trap elevation (ft) 32.2 bottom trap dimensions: 595.00 top of dam elevation (ft) 32.2 top width of dam (ft) 2:1 top trap dimensions ,.a 9..i VNN9E 4' LU%. \ t FLTER CLOTH COVNAL GNOONO GLEN. CONKS KQiEG n CUSS I R~ 2.9 596.00 13'x40' 596 6' 25'x53' Sediment Trap design #3 drainage area (acres) (< 2 ac) 0.97 trap volumes: elevation (ft) area (sf) volume(cf) volume(cy) 586 780 0 0.0 587 1253 1,007 37.3 588 1808 2,529 93.7 589 2423 4,637 171.8 wet storage: wet storage required (cy) (67*DA) bottom of stone weir (It) wet storage prodded at this elevation (cy) slope of wet storage sides dry storage: dry storage required (cy) (67*DA) crest of stone weir dry storage provided at this elevation Icy) slope of dry storage sides OR41N& CREST OF STONE WEIR ,,i'�«.► WET STORAGE (E= ATEO) 65.0 •SEE PLATE 113-1 587.49 65.0 2:1 weir length (fl) (6xDA) bottom of trap elevation (ft) 65.0 bottom trap dimensions: 588.46 top of dam elevation (ft) 65.0 top width of dam (ft) 2:1 top trap dimensions \ /se TP ' o, a• Lux. \ \FLTER CLOTH GRGINN. G O ELM CONKS AGGREGATE CLASS I RIRRAP 5.8 585 24'x57' 590 8' 47'x88' RAPHIC SCALE / of ( IN FEET ) 1 inch = 20 ft. SCOTT/R. C>7LLINSZ Lic. No. 035791,E pow 5/24/21�� t �`S'InArnT. ��G z . O_ U z U V) w O z z O I I Uj Ce�/ SF F z z w w 0 0 2 z z O O Ln Ln � o 0 ' a a c' 00% M Lf Q L9 0*) J cM M0- CA P-1 I --I I -I C W Q N CDU) W1 1 i �' z N LU O W > Q Q J Ld z U J LU Q (U U LU Q Q o z z Q Q 0- d U LU J WO ~ Y LU Cn z F- O Ul O W r'1 Q z W ZLU U) V / � ~ _j J a� LU Q o J Q (DU O LU Lu O N H� JOB NO. 202187 SCALE 1 TT =20' SHEET NO. 7 EROSION CONTROL * HANDBOOKSPECIFICAAON NUMBER IEROSION 7ROL -I SA SAFETY FENCE 3.01 CE CONSTRUCTION ENTRANCE 3.02 r-I CR CR CONSTRUCTION ROAD STABILIZATION 3.03 r I I SILT FENCE 3.05 lP STORM DRAIN INLET PROTECTION 3.07 _ DD �� TEMPORARY DIVERSION DIKE 3.09 \ RW � TEMPORARY ROW DIVERSION 3.11 / ST � SEDIMENT TRAP 3.13 - NOTE: SILT FENCE, SAFETY FENCE, AND SB SEDIMENT BASIN 3.14 TREE PROTECTION SHALL BE INSTALLED AT LIMITS OF DISTURBANCE. THESE AREI OP OUTLET PROTECT70N 3.18 OFFSET FOR GRAPHICAL PURPOSES. DRAINAGE DIVIDES ARE MEASURED AT THE LIMITS OF DISTURBANCE OR DIVERSION RR RIPRAP 3.19 \ vvv DIKE. CD �� UTILITY STREAM CROSING 3.25 � � • 4 ,/ �\ TS ---�- TEMPORARY SEEDING 3.31 SYCAMORE \ PS PS PERMANENT SEEDING 3.32 ) dIk 30' I I O1. TREE PROTEC7ON 3.38 \ S P R U C E/ C E D I PROPERTY LINE I DC DC DUST CONTROL 3.39 NE ( / I TP / ��5 J/ A ❑ I BM � SOIL STABILIZATION BLANKET 3.36 SAF / I �❑ 20 SPRUCE 24" 361 r \ ❑ \ \ SA 27" DBL. NC ARK \CONTRACTORSTAGINGAREA TP I MAPLE CEDAR r �' 1 g w!��rE �A _ - T=599.27 / - + 36' PRIVA BLS LAp)C _.. - - ' WITH FUELING TANK, DUMPSTER, ACCESS LANE I (� AND PORTA-POTTIES / I �' - - - I - - EASEMENT �o ' v� v/ I P 1 18" NNGN IA e - - --- _� �• � I - i ♦ --_� IPA � IP � � � �� ' T. • I►sew .p \ \ _�/�//' '4 P / r _ _ 1 \ ❑ �� P �'� 11 �'// I YI I I� I� I �Al I- pJ PAVILION VI PAVILION IV IP DA TO ST i = \ I 7 7 1 PARKING LEVEL FFE=6o7.ob 1 DA TO ST 3 I //� I// / \ PARKING LEVEL FFE=6o .6 PARS _ 1 / (PHASE 3) I i / (PHASE 2) 1 1.28 AC 1 / 0.15 AC I I I � � � I I / -' / '' / I �/ / W/ WIRE © r ❑ % 1 �� SUPPORT r I / -M1 Ora" I- i ---- -----------� LAJIIIIII"��°°r/ - - -- uuy„ yuur</---_-� T--/ ---�- / € € € € - nnm�` �iyh 3''Th ''oy 'i `£ . . - - / / / �06 / - \ / / I -! u! rcnm� ml fi X 3' ,mmc` '3 '�, 3' fi OP / / ' OHE I OH / ROSSER ASSOCIATES / _ _ _ - CONCRETE WASH OUT AREA- - - - - - - - - -/ ZONING: CO L6OMMERC�L OFEICr TP ' SAF 0 b6 CE 1 2'x7o' MIN. AVED WASH RACK NOTE: THIS CONSTRUCTION ENTRANCE SHALL BE INSTALLED, OPERATED, AND MAINTAINED BY THE CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS AREA SHALL UTILIZE THIS CONSTRUCTION ENTRANCE. Sediment Trap design #1 drainage area (acres) (< 2 ac) 0.15 trap volumes: elevation (ft) area (so volume(cf) volume(cy) 593.00 184.0 0 0.0 594.00 309.0 244 9.0 595.00 466.0 629 23.3 596.00 651.0 1,185 43.9 wet storage: wet storage required (cy) (67*DA) bottom of stone weir (ft) wet storage provided at this elevation Icy) slope of wet storage sides dry storage: dry storage required (cy) (67*DA) crest of stone weir dry storage provided at this elevation (cy) slope of dry storage sides 10.1 594.07 10.1 ORIOIN L GROUND VUIV. -SEE PUTS 113-1 VARIAB CREST OF STONE WEIR I .. R I DRY STORAGE WET STORAGE (EXCAVATED) weir length (ft) (6xDA) bottom of trap elevation (ft) 10.1 bottom trap dimensions: 595.00 top of dam elevation (ft) 10.1 top width of dam (ft) 2:1 top trap dimensions SF I TAX MAP 60 PARCEL 25 W/ WIRE IMITS OF DISTURBANCE = 2.io AC . - - DIVIDE (TYP.) SUPPORT UL. Ur r i l,L - vARPac \FLTER CLOTH QRGxAL Gn1IxD [LN. COARSE AGGREGATE CLASS I RIPRAP 0.9 593.00 135K 14' 596 6' 255(26' GRAPHIC SCALE ( IN FEET ) 1 inch = 20 11. Sediment Trap design #3 drainage area (acres) (< 3 ac) 1.28 trap volumes: elevation (ft) area (so volume(cf) volume(cy) 586 780 0 0.0 587 1253 1,007 37.3 588 1808 2,529 93.7 589 2423 4,637 171.8 storage: storage required (cy) (67*DA) om of stone weir (ft) storage provided at this elevation (cy) )e of wet storage sides storage: storage required Icy) (67*DA) st of stone weir storage provided at this elevation (cy) )e of dry storage sides 1' VARMBl �580 00� ORmxUL CREST OF STONE WEIR yppuRLE'GROUt/461-�;Vr ELM DRY STORAGE WET STORAGE (EXCAVATED) -SEE TRATE 3,13-1 85.8 587.86 85.8 2:1 weir length (ft) (6xDA) bottom of trap elevation (ft) 85.8 bottom trap dimensions: 589.00 top of dam elevation (ft) 85.8 top width of dam (ft) 2:1 top trap dimensions iY VARIAtRE / - / - \rLTER CLOTN GROUND EL- / Ev. COARSE AGGREGATE CUSS I RIPRAP 7.7 585 24'X57' 59C 8' / 47'XB8' 8SCOTT/R. CITLLINS'Z U LiC. No. 035791,E 5/24/21 ��' t 0 ��` 1nATAT. V,G z O rrAA a V/ " Z U w O z Z O 1=4 U) Vw CL W Ce LEE LEE Z Z w w i 0 0 i O O Ln Ln a a a N v r1i Eli rn m n Q J 0L M > C� N G W � > 2 N CD r (!) Is z N LU O Q C z U J LU Q U w Q o o z Q LL Q J � t1 U LU O LU z LUO U Ul`) 0 z LUQ r -) LU LU 2 lY Cn U) LU U) J LU°6 J w Qr z o I� Q (V 0 LU u1 o N JOB NO. 202187 SCALE 1 rr=20' SHEET NO. 8 PRE -DEVELOPMENT STORMWATER MANAGEMENT PLAN, SCALE 1"=50' �1"0 y O/ y0 '� \� dbS�yO \ \\ \ TYPE TYPE �m \ \ I I � \ -, 3 6am \\ \ \ \ \ \ ■ \ I \■�\ \ \ \\\\ \ \ \ `\ \\\ \ \ y - - w / 2 . I 1 1 w SOIL ■/ SOIL TYPE BOUDNARY ■ TYPE / / \ LINE(TYP') ■ moo z EXISTING DEa/ L ENT'- v �■ 1v vv DRAINAGE Ak T E A \ ■ UNDIST B „� ♦ `� A v ■ 1.49 a�. a� " ♦ ` SUBAREA Av ■ CN 8 v 1171 �F. �w EXISTI \ = ■a4 o o \ CN 63\ P E • U / \\ Tc=O.'24 hr§rz Int o E_ O� m o \ �x M� Nmw \ � V ■ v�� :.I \ \ \ I ■ SOIL > 4i \ z TYP E Ilk 19B loan II i / SC LOD USED FOR WATER/ ■ / QUALITY CALCULATIOAt NSo ■ i ••• 11 I YFJ vu Vp - z Ll - M / Tc=o.24 hrs. Too' OF OLF W) A ELEV.=2' / Q 358' OF CONIC. FLOW W10 ELEV =20' z N Q_ U / • M� Z / --- ---_, /SOIL / , , YE- eoz- r 9 D. 9 KENRIDGE ROAD / 6 VARIABLE ACCESS EASEMENT_-- _ _ i SOIL o �Q z� _z a Tik SOIL Pre -Development Impervious Area Summary . - _ _ _ _ _ _ _ _ _ Pre -Development Impervious Area Summary Subarea A, Water Quantity \ Building/Structure 1,213 sf U.S. ROUTE 25Q LOD, Water Quality VARIABLE see) / / Building/Structure 0 sf _ Roads/Driveways 3,361 sf (D' ' Roads/Driveways 8.210 sf 4,574 sf 8,210 sf GRAPHIC SCALE ( IN FEET ) 1 inch = 30 ft. WATERSHED SUMMARY CN Area, ac. 1-year Flow, cfs 2-year Flow, cfS 10-year Flow, cfs DAA(Pre-Dev) 63 1.71 0.73 1.39 3.91 CN Area, 1-year Flow, 2-year Flow, 10-year Flow, DA A & B (Post-Dev) 84 1.71 0.45 1.27 1.63 NOTE: Sub-Area'A' is routed through Dry Swale Wand then through Detention Basin'B'. Sub -Area B is routed through Detention Basin 'B' POST -DEVELOPMENT STORMWATER MANAGEMENT PLAN, SCALE 1"=50' GENERAL SWM FACILITY NOTES: �,L�" t THE BMPs. THIS R 1. CONTRACTOR SHALL CALL THE COUNTY INSPECTOR &ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY ANTICIPATED CONSTRUCTION ACTIVITIES FOR - - Y FOR PIPE CONSTRUCTION BUT BEFORE STONE BEDDING IS INSTALLED _ - ObOcy%lb'y C/ M. o v \ y 1 a ■ &BA ■ 1.13 ac. ■!.� \'�\` IJ IJ I I \ a r Tc=0.25 hrs. (ROUTED THROUGH w DETENTION BASIN -B-) z w ■�- m o moo v EXISTING DRAINAGE AR T E A ♦ I � \\ \ \ UNDIST B 1.49 a CN EXISTI I o L > V • O�j K I o • V \ O J �Q me m m "a a r I �� [ f �• .. a I ■ [ / Tc=0.28 hrs. ■ I 90' OF OLF w/ 4 ■ ■ SUBAREA A I ELEV.=l' ■ 0.58 ac. I '- 28' of CONC. FLOW ■ CN=85 130'wCHANNEL FLOW ■ y Tc=0.28 hrs. IN PIPES=0.01 HRS �• (ROUTED TO DRY SWALE 'A' I / THEN THRO UGH DETENTION BASIN 'B') oa i I 0 0 - O / % Tc=0.25 firs. / 100' OF OLF w/ A ELEV.=2' 195' OF CONC. FLOW w/ A ELEV.=11' �� pI CD 400' CHANNEL FLOW IN PIPES=0.02 HRS�, f'': _N- a �m V /FOR THE ESC LIMITS OF DISTURBANCE (2.10 / THE _ - c. DEFINES _ _ -_ 5s° PROPOSED BOUNDARY f \ ---FOR THE VRRM WATER „� KENRIDGE ROAD QUALITY EQUIREMENTS TYP. - VARIABLE ACCESS EASEMLR. - - � � - � l Post -Development Impervious Area Summary / Subarea A, Water Quantity 1 _ Building 13,017 sf Pa rki ng Areas/Roads 3,520 sf Sidewalks & Concrete 296 sf t 16,833 sf Post -Development Impervious Area Summary Subarea B, Water Quantity, _ \_' - - - � � _ _ _COD, Water Quality Building 23,621 sf \ Building 35,416 sf J.S. ROUTE 25Q, ParkingAreas/Roads 4,201 sf VARIABLE R/w / ParkingAreas/Roads 12,570 sf Sidewalks & Concrete 698 sf (D.B. 265-568) Sidewalks & Concrete 1,698 sf 28,520 sf 49,684 sf GRAPHIC SCALE 30 0 15 30 60 120 IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION SYSTEM SUBGRADE IS READ 2. PROPOSED OUTLET PROTECTION BELOW THE UNDERGROUND DETENTION SYSTEM'B' OUTFALL TO CONSIST OF AS WIDE, 33.5' LONG, 28" DEEP VDOT CL. At SCOTT R. LINSZ RIPRAP LINED APRON WITH FILTER FABRIC UNDERLAYMENT. APRON TO BE LOCATED BETWEEN THE PROPOSED END SECTION AND THE BASIN FLOOR, AS SHOWN. O OUTLET PROTECTION SHALL THEN TRANSITION TO A o.5% GRADE AT THE BASE OF THE EMBANKMENT& SHALL EXTEND TO THE DETENTION BASIN'B' RISER (> Lic. No. 035791,a STRUCTURE TO REDUCE THE RISK OF SCOUR & ORIFICE CLOGGING. FILTER FABRIC UNDERLAYMENT SHALL BE KEYED INTO THE EXISTING GROUND A MINIMUM OF 9"ATTHE ENDS& ALONG THE PERIMETER. EDGES OF FILTER FABRIC SHALL OVERLAP A MINIMUM OF I2". 16 5/24/21 3. THE DETENTION BASIN B EMBANKMENT SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE DETAILS & DESIGNS SHOWN ON THIS PLAN. ti 4 I O REDUCE THE RISK OF CLOGGING SSIONAL EEO TR SHROACKSS ARE PROPOSED ON ALL ORIFICES AND THE DETENTION B SIN BURIS RE ADDITIONALLY, HE R PRIAP OUTLET PROTECTION BELOW UNDERGROUND DETENTION SYSTEM 'B' WAS EXTENDED (AS DESCRIBED ABOVE IN #2) AT Ao.5%SLOPE TO REDUCE THE RISK OF CLOGGING DETENTION BASIN B's LOW -FLOW ORIFICE. STORMWATER MANAGEMENT NARRATIVE: OVERVIEW THIS PROJECT PROVIDES STORMWATER MANAGEMENT (SWM) PRACTICES TO MITIGATE THE IMPACTS FROM THE PROPOSED IMPROVEMENTS. THIS STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. THIS PLAN DOES NOT ALTER THE EXISTING DRAINAGE AREA TO THE F- EXISTING SAND FILTER AND UNDERGROUND DETENTION SYSTEMS SERVING THE EXISTING THREE BUILDINGS AND AS SUCH ONLY THE PROPOSED w BUILDINGS ARE EVALUATED WITH THIS STORMWATER PLAN. WATER QUALITY SUMMARY Lu THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE MET THROUGH THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS. A MINIMUM PHOSPHOROUS REMOVAL RATE OF 1.84 Ibs/yr IS REQUIRED. THE DEVELOPER WILL PURCHASE NUTRIENT CREDITS PRIOR TO THE z Ln Ln ISSUANCE OF A LAND DISTURBANCE PERMIT. z0 g z z \ w w i PLEASE SEE THE ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS.LU F- O O - WATER QUANTITY SUMMARY V/ � V in K THE PROPOSED DEVELOPMENT HAS ONE CONCENTRATED OUTFACE. ITS DRAINAGE AREA SUBAREAS A & B MEETS MINIMUM CHANNEL AND FLOOD ( ) Z vl O PROTECTION REQUIREMENTS SET FORTH IN 9 VAC 25-870-66. SUBAREA A RECEIVES ATTENUATION VIA DRY SWALE 'A' INITIALLY AND IS THEN Q w a z z DIRECTED INTO DETENTION BASIN 'B'. SUBAREA B's INFLOWS AND SUBAREA A's ROUTED OUTFLOWS WERE SYNCHRONIZED. THE SYNCHRONIZED STORM z z 2:O 0 O EVENTS WERE THEN ROUTED THROUGH DETENTION BASIN 'B'. THE RESULTANT DETENTION BASIN 'B' ROUTED OUTFLOWS ARE COMPLIANT WITH O cc U MINIMUM COUNTY & STATE REQUIREMENTS. 104 Ln 0 Ln Ln IN SUMMARY, CHANNEL PROTECTION FOR SUBAREAS A & B IS MET THROUGH 9VAC25-870-66 SECTION B.3.a (ENERGY BALANCE) AND FLOOD w Q PROTECTION IS MET THROUGH 9VAC25-870-66 SECTION C.2.b. (10yr. POST FLOW < 10 yr. PRE FLOW). COMPLIANCE WITH THESE SECTIONS IS ACHIEVED PRIMARILY THROUGH THE PROPOSED DETENTION BASIN 'B' AND THE PROPOSED DETENTION BASIN 'B'. PLEASE SEE THE ATTACHED ~ m Q Q CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS. 7 In 1B1 a DETENTION BASINCONSTRUCTION NOTES: U li ~ FACILITY PLANTING SPECIFICATIONS: z 1. THE DETENTION BASIN SHALL HAVE A TURF GROUND COVER, SUCH AS GRASS OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND THIS IS OPTIONAL AND IS NOT REQUIRED FROM A STORMWATER MANAGEMENT STANDPOINT. HOWEVER LANDSCAPING MAY BE PROPOSED WITHIN THE FACILITY. SEE LANDSCAPING PLAN FOR ADDITIONAL DETAILS PERTAINING TO THE SITE's OVERALL LANDSCAPING REQUIREMENTS. 2. THE PROPOSED INTERIOR SIDE SLOPES OF THE BASIN SHALL BE A MAXIMUM OF 3:1 TO REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL BE GRADED TO PROVIDE POSITIVE DRAINAGE AT ALL TIMES TO THE RISER STRUCTURE. 3. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE PRINCIPAL SPILLWAY STRUCTURE. 4. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY THE DENSITY OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. w CD N N ni 5. EXTRA MULCHING AROUND THE BASE OFTREESAND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTUREAND SUPPRESSING WEEDS. Q N v CONTRACTOR REQUIREMENTS: O\ M V\1 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). ALL DISCREPANCIES SHALL BE BROUGHT TO THE ATTENTION OF COLLINS ENGINEERING PRIOR TO THE CORRESPONDING CONSTRUCTION ACTIVITY. 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 500, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. S. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). Cy) L9 6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. 7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 7- S. 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 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 M M 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. CV 10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM CY) 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 INSPECTOR INITIALLY, AND THEN01 THE DESIGNER. N 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 SHALLOCCUR WHEN THE SOIL IS FROZEN. O 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 _ z CRAMPING ROOTSTOCK. N 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 r N W 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. Q 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. > W Q FACILITY CONSTRUCTION I I L1J 1. THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP DURING PROJECT CONSTRUCTION. IF THIS IS DONE THE VOLUME SHALL BE BASED ON THE MORE STRINGENT / z ASKING RULE EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. STORMWATER TREATMENT REQUIREMENTS),INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED ( Qz w DURING THE CONSTRUCTION PHASE AND DESIGN ELEVATIONS SHALL BESET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION FACILITY IN MIND. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED TO AN DETENTION BASIN. 2. THE DETENTION BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE FACILITY IS COMPLETELY STABILIZED. IF THE SITE OF THE PROPOSED SWM w FACILITY WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE THEN THE FACILITY WILL BE DEWATERED DREDGED AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. MODIFICATIONS SHALL BE MADE TO THE RISER, ORIFICES AND BARRELS AS REQUIRED SO THAT THEY ARE CONSISTENT WITH THE FINAL CONSTRUCTION SPECIFICATIONS. 3. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT STAGING AREAS WHEN POSSIBLE. 0 W 4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE. 5. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BASIN INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES. ALL AREAS J SURROUNDING THE BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF LL SOIL STABILIZATION. 6. Q ^_j / 1'1 CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE. = LL Q SE 7 CONTRACTOR SHALLINSTALL THE OUTFLOWAND/OR THE BARREL(s) WITH PERMANENT COLLARS DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE OVERFLOW CONSTRUCTED LEVELTHE DESIGN ELEVATION. U 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: I Q c ~� Table 14.4. Clay Liner Speci#canons Uj Pr rty Test Method Unit spectliecation Permeability ASTM D-2434 Cm/sec 1 x 10 Plasticity Index of Clay ASTM D-4231424 % Not less than 15 uid Umil of Cla ASTM 62216 % Not less than 30 Cla PartiGes Pass ASTM D-422 % Not less than 30 Cla Com coon ASTM D-2216 % 95% of stantlartl r tlen LU Q O Source: Virginia Stomlwater Management Handbook (1999) - F it G 9. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE BASIN. LL 2: 0 10. CONTRACTOR SHALL THEN CONSTRUCT TH E EM ERG ENCY SPI LLWAY IN CUT OR STIR UCTU RALLY STABI LIZED SO LS. V) 11. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION. ^ w 12. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW. v J v ) 13. THE CONTRACTOR SHALLTHEN INSTALLTHE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. W FACILITY MAINTENANCE: J MAINTENANCE OF THE DETENTION BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING THESE INSPECTIONS THE MMMMJ Lij 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 BASIN. 2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANY TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE rNy L.1_ PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE. Q / ^ 3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 1� 4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS, IF APPLICABLE, FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY �.! - EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. tJ LU 5. INSPECT BASIN OUTFALL CHANNEL, IF APPLICABLE, FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc. CD IN FEET ( ) 6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. N 1 inch = 30 ft. 7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. 8. 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. 9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING. 10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY. w FACILITY INSPECTION: b MULTIPLE INSPECTIONS ARE CRITICALTO ENSURE THE BASIN(s) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE ^ w CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE 0 _ CHANNEL & FLOOD PROTECTION SUMMARY SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OF THE DETENTION BASIN's CONSTRUCTION PROCESS: a I to JOB NO. 1. PRE -CONSTRUCTION MEETING Method of 9VAC25-870-66 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 202187 Pre-Dev. Post-Dev. Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS) Subarea Subarea Channel Protection Compliance Limits of Analysis for Channel Flood Protection Compliance Limits of Analysis for Flood Protection 4. DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS) SCALE Protection 5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s). 6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING IF APPLICABLE) 1 rr=50r A A & B Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) Section C.2.b (10 yr. Post Flow < Pre Flow) N/A (10-yr. Post Flow < Pre Flow Satisified) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) Note: Exception request has been made to allow for a larger discharge than what energy balance allows SHEET NO. 9 DETENTION BASIN 'B' DETAIL, SCALE 1"=20' HORIZONTAL GRAPHIC SCALE 20 0 10 20 40 ( IN FEET ) 1 inch = 20 ft. SECTION A-9: TYPICAL GRAPHICAL DETAILS Homogeneous fill I in Cut off trench-4' below suitable material Soil or rock L--———— — — — — -- TYPICAL HOMOGENEOUS EMBANKMENT I 'Pipe outlet Coarse filter Perforated Collector araund slots Foundation drain FOUNDATION DRAIN <'� drain t Sand, grams a roc# i"n outlet toe �Tronsition ftlter CHIMNEY DRAIN Transition fill .-Rock or gravel Blanket drain BLANKET DRAIN ROCK or gravel drain Tramition filter TOE DRAIN Source: SCS Engineering Freld .kfanual Figure A -la. Hourogerreonc Embankments TT '.Seepage Controls EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE'S SOILS, SITE VISITS, 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 DESIGNS PROPOSED, A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, 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 EC-3 MATTING & 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. 0/H0 db PROPOSED 024" HDPE STANDPIPE TOPPED WITH STEEL WEIR PLATE PROIDING 12" OPENING AND TRASH RACK TO SERVE AS RISER STRUCTURE. SEE DETAIL ON THIS SHEET, OR EQUIVALENT, FOR TRASH RACK. RISER TO HAVE A WEIR PLATE ON RISER RIM ELEV.=588.80. RISER TO HAVE ONE 3" \\ LOW -FLOW ORIFICE (INV.=584.80). RISER INV OUT=584.80 (TO OUTFALL). ` TO PREVENT FLOTATION THE RISER BASE SHALL BE FIRMLY EMBEDDED --- 6" INTO AN 18" THICK REINFORCED CONCRETE FOUNDATION THAT IS 4 X4', AND BURIED BELOW GROUND. \� \/ V TOP OF DAM = 590.70 DETENTION BASIN TO OUTFALL TO LEVEL SPREADER WITH RIGID LIP. CHANNEL LENGTH =10', WIDTH =T, SLOPE =0%. 1 I \\\ \ \ I BOTTOM OF CHANNEL ELEVATION = 580.50'. RUNOFF OUTFALLS ONTO EXISTING UNDISTURBED SLOPE OF 8.33%. — — — _J I 777 " • \F v v A Is Iv. vAL 1992 \ v � \ VERTICAL GRAPHIC SCALE 2 0 1 2 4 8 LEVEL SPREADER JUTE. OR EXCELSIOR OR EQUIVALENT STAPLED IN PLACE — BURIED 6" MIN. — , LEVEL UP OF SPREADER — CROSS SECTION MIN- 6' VARIABLE (MIN. 7') er MIN. BURIED 6" MIN. ( IN FEET ) 1 inch = 2 ft. LEVEL SPREADER WITH VEGETATED LIP VDOT 43, #357, #5, #56 OR #57 COARSE AGGREGATE IN GALVANIZED WIRE MESH BASKET * RLTER CLOTH SECURE WIRE TOGROUND WITH WIRE STAPLES � 14 7' MIN. I 3' UNDISTURBED SOIL CROSS SECTION VARIABLE (MIN. 7') —SECURE WIRE MESH TO TIMBER �6X6 TREATED TIMBER 6" MIN. @5 REBAR TO MIN. 6, LEVEL SPREADER WITH RIGID LIP * MIN. PHYSICAL REQUIREMENTS OF FILTER CLOTH NOTED IN STD. & SPEC. 3.19, RIPRAP 2:1 OR FLATTER 2:1 OR FLATTER 3.21 Source: Va. DSWC and N.C. Erosion and Sediment Control Planningand Design ManualDesi2n Manual Plate 3.21-2 III - 195 600 600 10-YR PEA 24" RISER WSE=589.19 TP=588.8o INV OUT: 584.8o TO OUTFALL 595 595 2-YR PEAK 100-YR PEAK WSE=588.97 1 WSE=589.3 1 1 1.2' FREEBOARD 1-YR PEAK WSE= 588.51 1 \ 590 590 PROPOSED N PROPOSED 6' WIDE TOP OF DAM ELEV=59o.70 RETAINING WALL WITH A 20' WIDE GRASS LINED EMERGENCY \ SPILLWAY (CREST ELEV=589.5o') �i PROPOSED GRADE (TYP. EXISTING GRAD (TYP.) 585 \ 585 24" ADS DRAIN BASIN W/ BOTTOM OF SOLID TOP TP=588.8o BASIN = 584.800 INV IN: 580.82 INV OUT: 580.72 \ 4-? S96 580 12" HDPE 580 PROPOSED 024" HDPE STANDPIPE TOPPED WITH STEEL LF C-W 0.92% 20.70 WEIR PLATE PROIDING 12 OPENING AND TRASHRACK TO SERVE AS RISER STRUCTURE. SEE DETAIL ON THIS SHEET, OR EQUIVALENT, FOR TRASHRACK. RISER TO HAVE A WEIR PLATE ON RISER RIM ELEV.=588.80. RISER TO HAVE ONE 3" LOW -FLOW ORIFICE (INV.=584.80). 20 FT TRANSITION _,,Z RISER INV OUT=584.80 (TO OUTFALL). TO PREVENT SECTION < 1% FLOTATION THE RISER BASE SHALL BE FIRMLY EMBEDDED 6" INTO AN 18" THICK REINFORCED CONCRETE FOUNDATION THAT IS 4'X4', AND 10 FT LONG BURIED BELOW GROUND. CHANNEL @ 0% DEPTH = 6" BOTTOM ELEV = 580.50' 575 575 rl�- a o �0 m kD CO 00 Ln 00 0+00 0+50 1+00 1+50 DETENTION BASIN B TOP OF CHANNEL — = 581.00' 0.5' BOTTOM OF CHANNEL = 580.5o' 1' LEVEL SPREADER SECTION SCALE: 1" = 2' OUTLET PROTECTION SIZING 6X6 TREATED TIMBER RIGID LIP VDOT #57 COARSE AGGREGATE LAID ON OVER FILTER FABRIC AND IN GALVANIZED WIRE MESH BASKET ENTRENCHED AT LEAST 2 INCHES BELOW EXISTING GROUND AND SECURELY ANCHORED. EXISTING 8.33%SLOPE 3' TYPE LENGTH WIDTH DEPTH TO DENTENTION BASIN 'B' RISER VDOT CLASS 1A 33.5' 3' 1.5' TO DRY SWALE 'A' VDOT CLASS 1 A 4' 2.5' 1.5' Ic SCOTTvR. CbiLLINS'ZZ Lic. No. 035791 a pow 5/24/214� ``svn AlAT. E�GI Ln Ln z z w w U U rr z z 0 0 Ln Ln m m UJ UJ a a o + .+ w N N N ~ t1 N � m WI Ol M V1 z n CY) Q L , f� M Ch Cn C N G M \ I � N O N z LU LLI J z J J LCU I --I W G W 0 o z J Q W < J � a LU U W Q z W ur) 2: ~ cl� W U 1n � O Q Fz r"1 LLl Q�/ LU LL O U) � ~ � LU J W Q1� ran �•� V V C) w N i w J G w � 0 w w a Ln JOB NO. 202187 SCALE AS SHOWN SHEET NO. 10 DRY SWALE 'A' FACILITY MAINTENANCE: Itz DRY SWALE 'A' DETAIL, SCALE 1"=20' I "\ 1\ Ld PROPOSED 012" HDPE STANDPIPE WITH TRASHRACK TO SERVE AS THE RISER STRUCTURE. SEE DETAIL ON THIS SHEET, OR EQUIVALENT, FOR TRASHRACK. RISER ` RIM ELEV=601.90. RISER TO HAVE ONE 8" LOW -FLOW 1 1� ORIFICE (INV =600.00). 10" HDPE OUTFALL PIPE INV IN 600.00, INV OUT=596.70. TO PREVENT FLOTATION THE RISER BASE SHALL BE FIRMLY EMBEDDED 6" i \ \ INTO AN 18" THICK REINFORCED CONCRETE FOUNDATION THAT IS 3'x3', AND BURIED BELOW soo GROUND. N o p I w _J _J ` I l � � Q U ,, ry 0 LLJn 1 < > 0 0 OLO Cif -0 1 LL- Un 1 w in O Q 3:1 SIDE SLOPES o �I 1 �z< / o_ SEE TABLE ON \ 1 I SHEET 10 FOR OUTLET of 111 PROTECTION 11 I DIMENSIONS ze 605 12" RISER INV OUT: 600.00 TO STIR B7 1-YR PEAK- 600 WSE=600.75 595 BOTTOM OF - SWALE = 600. 0+00 605 ED GRADE (TYP.) 2-YR PEAK WSE=601.03 600 PROPOSED 012" HDPE STANDPIPE WITH TRASHRACK TO SERVE AS THE RISER STRUCTURE. SEE DETAIL ON THIS SHEET, OR EQUIVALENT, FOR TRASHRACK. RISER RIM ELEV.=601.90. RISER TO HAVE ONE 7" LOW -FLOW ORIFICE (INV.=600.00). RISER INV OUT=600.00 (TO STR 67). TO PREVENT FLOTATION THE RISER BASE SHALL BE FIRMLY EMBEDDED 6" INTO AN 18" THICK REINFORCED CONCRETE FOUNDATION THAT IS 3'x3', AND BURIED BELOW GROUND. 595 0+50 DRY SWALE A CROSS SECTION HORIZONTAL GRAPHIC SCALE ( IN FEET ) 1 inch = 20 ft. A COUNTY OF ALBEMARLE Department of Community Development 0�getMP Construction Record Drawings (As -built) for VSMP The following is a list 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 may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - biefilter 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. VERTICAL GRAPHIC SCALE lsorllrt I < pipe culvert ( IN FEET ) 1 inch = 2 ft. 1/2" zinc plated hook attached with 1/8' fastener 2-1 )A" din. holes �1/4' HDPE pale (optional) love sit uriSice 1', 1 t'Vil t I LJ I DEBRIS CAGE I nPE ei.rucl.ural plastic with holes and 1/4" plate manufaclurcd by Plastic Solutions line. or equal • 3hewn xith optional plate HDPE. sl"uch.irml plastic with '; 8" holes and 1/4- plate :ufactured by Plastic ikons Inc or ctlsal PLASTIC SOLUTIONS INC. P•0 Box aZBb Mincitener 1'1 877-877-5727 snl.plellic-IlollitieAmm THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION FOR EACH DRY SWALE: 1. FOR THE FIRST 6 MONTHS FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED BY THE CONTRACTOR AT LEAST TWICE AFTER STORM EVENTS THAT EXCEED 1/2 INCH OF RAINFALL. 2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA OR AROUND THE DRY SWALE, AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED WITH GRASS COVER. CONTRACTOR SHALL SPOT RESEED AS NECESSARY. 3. ONE-TIME, SPOT FERTILIZATION MAY BE NEEDED FOR INITIAL PLANTINGS. 4. WATERING IS NEEDED ONCE A WEEK DURING THE FIRST 2 MONTHS, AND THEN AS NEEDED DURING THE FIRST GROWING SEASON (APRIL-OCTOBER), DEPENDING ON RAINFALL. 5. REMOVE AND REPLACE DEAD PLANTS. SINCE UP TO io% OF THE PLANT STOCK MAY DIE OFF IN THE FIRST YEAR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE CARE AND REPLACEMENT WARRANTY TO ENSURE THAT VEGETATION IS PROPERLY ESTABLISHED AND SURVIVES DURING THE FIRST GROWING SEASON FOLLOWING CONSTRUCTION. THE TYPICAL THRESHOLDS BELOW WHICH REPLACEMENT IS REQUIRED ARE go% SURVIVAL OF PLANT MATERIAL AND s00% SURVIVAL OF TREES. 6. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED AT EACH DRY SWALE. THE FOLLOWING IS A LIST OF SOME OF THE KEY MAINTENANCE PROBLEMS TO LOOK FOR: A. CHECK TO SEE IF 75%TO go% COVER (VEGETATIVE COVER) HAS BEEN ACHIEVED IN THE BED. B. CHECK FOR SEDIMENT BUILDUP AT CURB CUTS, PIPE OUTFALLS, GRAVEL DIAPHRAGMS OR PAVEMENT EDGES THAT PREVENT FLOW FROM GETTING INTO THE BED, AND CHECK FOR OTHER SIGNS OF BYPASSING. C. CHECK FOR ANY WINTER- OR SALT -KILLED VEGETATION, AND REPLACE IT WITH HARDIER SPECIES. D. NOTE PRESENCE OF ACCUMULATED SAND, SEDIMENT AND TRASH IN ANY PRE-TREATMENT AREAS OR FILTER BEDS, AND REMOVE IT. E. INSPECT DRY SWALE SIDE SLOPES AND GRASS FILTER STRIPS FOR EVIDENCE OF ANY RILL OR GULLY EROSION, AND REPAIR IT. F. CHECK THE DRY SWALE BED FOR EVIDENCE OF MULCH FLOTATION, EXCESSIVE PONDING, DEAD PLANTS OR CONCENTRATED FLOWS, AND TAKE APPROPRIATE REMEDIAL ACTION. G. CHECK INFLOW POINTS FOR CLOGGING, AND REMOVE ANY SEDIMENT. H. LOOK FOR ANY BARE SOIL OR SEDIMENT SOURCES IN THE CONTRIBUTING DRAINAGE AREA, AND STABILIZE THEM IMMEDIATELY. I. CHECK FOR CLOGGED OR SLOW -DRAINING SOIL MEDIA, A CRUST FORMED ON THE TOP LAYER, INAPPROPRIATE SOIL MEDIA, OR OTHER CAUSES OF INSUFFICIENT FILTERING TIME, AND RESTORE PROPER FILTRATION CHARACTERISTICS. FACILITY INSPECTION: CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE DRY SWALES ARE PROPERLY CONSTRUCTED AND ESTABLISHED. 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 DRY SWALE 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. DRY SWALE INSTALLATION (E.G., MICROTOPOGRAPHY, SOIL AMENDMENTS, STONE BEDDING, UNDERDRAINS AND STAKING OF PLANTING ZONES) 5. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) 6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) PLEASE ALSO SEE ABOVE, UNDER FACILITY MAINTENANCE #6, FOR REQUIRED INSPECTIONS. StormRaxT"' ROUND SERIES TRASH RACK (OR EQUIVALENT) CONCRETE MANHOLE STANDARD 60 INCH RACK SHOWN DIMENSIONS IN INCHES A ' PLAN SIDE VIEW StormRaxT"' Round Series for Concrete Manhole Part Na Dim A Dim B Dim C Min ID Min co i944 171/ 14 y 28 • 24 30 RS-36 21 Y4 14 % 40 % 36 43 R548 27Jy 18 54 . 48 57 RS-60 27 % 18 Y4 66 34 60 70 Plastic Solutions, Inc. 'i"4� PO Box 43M Winchester, VA 22604 238 McGhee Rd. Winchester. VA 22603 :877) 877.5727 phone (540) 722-2219 fax httpc//www.p4astic-solUOm.com HOPE STRt.'.'liNAi PLAS11C BY FLWIC €c. J-IDH9, INC_ OUAR-ER SECTION REmommz rOR ACCESS i ISOMETRIC CONCRETE STRUCTURE DIMENSIONS INSIDE STRUCTURE DIMENSION OUTSIDE STRUCTURE DIMENSION AVAILABLE OPTIONS CROSS BRACING FOR OVERHANG HDPE ANTI -VORTEX PLATE CUSTOMER DATE: DRAWN BY- PROJECT: APPD BY: DETAIL: SCOTTIR. Cbi,LINS'ZZ Lic. No. 035791 a p`o�� 5/24/214� �SlO1C'1 z O rrAA a V/ 0� Z " In w O Z z 0 rrHA V/ > w in in z z w w U U Z Z :::, � O O In In a a o .. Q � r1jN � L9 W W 00 J J U i co cri 0- rn N co > 1 l N O N z \N w LLI J w Iti U) 2: F- W 0 z O Q W J 2: Q W _ U W Q Z Q ~ W U) 0 Q r1 W Q LU �/ LL O �/) V / I— W LU ED Q rr<n V O w N I� b ~ w � 0 w O w tY = a JOB NO. 202187 SCALE AS SHOWN SHEET NO. 11 1 I�SCOOTTIR. CbLLINS� U Lic. No. 035791 I �� 5/24/21 ��' IO��SSIONAL Eo�ti� I � zzS z w w - � E O O z z � O O U U (n 1n U) U) � w w C � � O � - a a — o c c \ I ro PROPOSED 18' DRIVE AISLE • / F �' - 1• N 7 Ln _ - - r .--I N N I � � � PROPOSED 20' DRIVE AISLE ' _ — — — — — — � � I I � — ■ — — _ _ _ _ � _ v 11 I , 6%33 PROPOSED WALL i i _ AREA OF NEW \ \ \ \ I � I Ilse � ---- - - _.a ' II ��o-- -- e°zs_° ---�— ---�- -- -- ---� �� - - -- �� - �-' -- -- -�-�4}-- -- --- __ `I��_ , : • '� - -6.2.8.---- --- --- T�- _ •• fASEMEENR FULLLL 0'PAVEMENTFFOR ---------+-------- ON-STREET N-STREE PARKING ?----- - - - - - - - - - - - - - - - - _ Q �� ■ � � g - �:� ,:� � -- T / �� \ ............Q --__ - o0 �� /� �,■ c _ — \ 1 1zf� F1'Y 'Y 1 -Y Y Y ° ' \ I I 1 I I I` YY Y r r rl' ■ � I / ) — G�_ \ r - � I I• I � I V I � .' .' I�■■ ,■ I � l/ �� ' 1W s9s�� A / , V / \ 1on I ' A I� , ■■ ■ _ - r III '/ -■ �� ,BW Ll VA VIII 1 �" 1 I ■ +1//',I' - ' �1 I� N LN - \ \ II I I 1 � V I 1 II ■ ■ i � I- � ,I / i � / /, N \ 1 • v N UJ ■ PARKIAI. PAVILION PAVILION IV ' PIA " ' ; ' k / ' FFE-6o 6 - PARKING LEVEL', 7 7 I , P�IfKING LEVEL FFE=6o7.00 ; ' I � � - I �. _ _ -�" „ ; Ill ■ I law59°.°°Lu t - - _ A 1 I i \ � ,' .' � 'T ■■ ■ - '' � ' � - ill ■ I I � I � ,, '�/ ■ ■ P J ADS NYLOPLAST YARD! 6°6.61 , i ■ i o°� _ ' i , / DRAIN SYSTEM SHALL I ® , \� i ■■ i ° • i i i y / W CONNECT TO ROOF LEADERS ■ i 's° / W z / AND COLLECT SURFACE RUNOFF 1pe/1�■ • ■ _ ■' • ■ ■ FROM DRAIN BASIN INLETS ■ II ■ I --- ----- - Lu E77 S ■ ■ ■r 'i l / -___ ___ ____ - ___ ----- 1 ___________ T7n�_ --' ° ---_ - - ----__ r �aa 94 r�l I• le s9°,° /i l l i ,',• 1 \\ , i --------- • ..° -aQ - ---- --------------- ------------------ ----- - °i k ' 11 \\\\ nb6o�— ............. �..................... .........6.6) r 350 643— _�` _________ i♦ 6n __ _ __ _____—'__ _ 1 '� `` `—+_ ' /' E < 1� VI V ••r�••••••••••-_ ■■ _ --sor-------- . �.q■i��■......■■iiiiiiii ■■.■■ ■■isiiiiiiii.��i■u■�.■■■.■ ■....�Giiii■ r� r ' _ - - .. . �� . S.- - - - r r / / d L f uu `• ,� - u�ur1■111■u11 -��- ....�% ��•.-.■.►i■ r■■a1 ■ i7. -- --- l/ U L�`__ ______________ _ % - 41,-r —6° °° ---_ -- — • ---- - ---- - • / Lu €€ - Q __- ---- - ----- - •1 � � �-mow- oo Bw=s9°.as v 1 ' � • % TW 596.00-� 'Iw 596.ao �590 )a 1 """K4 3liJ k1'4G i j _-- € — — o - - - W % ''/m�rm mnrm '�rynnr '''nnrm ... .... � '++�`� � � g ''++� x � �i, F �j'y X � 3L� � / — — — — — — — —, , — _ _ _ _ _ _ 2 ° ■ / ROSSER''ASSOCIATE�s °"` °"` «q1 E r / J ----- PROPOSED SEGMENTED �, /' 1--1 T -, ------------' ZONJ NG: CO ,COMMERCIAL OFFICE ~ - - - - - = RETANING WALL W/ r // TAX MAP 60 PARCEL 25 r ___-- HANDRAIL, MAX HT. 6' r /g / _ \\ O Lu USE: OFFICE -- ADS NYLOPLASTYARD -„- _ _-- ■' g/ �/ C/)� p DRAIN SYSTEM SHALL __ / Lu CONNECT TO ROOF LEADERS AND COLLECT SURFACE RUNOFF FROM DRAIN BASIN INLETS (/ • ■ / Lu VAR. WIDTH �� se, 1� Q /Qn SWM FACILITY & ��/ / V ACCESS EASEMENT" • sus°5B'- ��f i a000� DB._, PG. g / O w CN CN J I r~i / POLE o = / a In / JOB NO. GRAPHIC SCALE / 202187 20 0 10 20 40 80 / ' / ' / SCALE 1 "=20' ( IN FEET � '/ � / / SHEET NO. 1 inch = 20 ft. 12