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HomeMy WebLinkAboutWPO201800015 Plan - VSMP WPO VSMP 2018-03-15GENERAL NOTES: DEVELOPER: CVILLE REAL ESTATE & CONSTRUCTION 2248 IVY ROAD CHARLOTTESVILLE, VA 22903 OWNER: TMP 62G-2-22 JAMIE WHITE 600 E WATER STREET, SUITE K CHARLOTTESVILLE, VA 22982 434.951,7717 ENGINEER: COLLINS ENGINEERING 200 GARRETT STREET, SUITE K CHARLOTTESVILLE, VA 22902 CONTACT: MR. SCOTT COLLINS, PE 434.293.3719 TAX PARCEL #: 062GO-02-00-02208 TOTAL ACREAGE: 0.16 ac. ZONING: NMD PER ZMA# 07-04 W/ BELVEDERE COD APPROVAL ON JANUARY 5, 2010 (ACCOMPANIED BY APPROVED VARIATION REQUESTS DATED 2-3-2010) PROPOSED USE: COMMERCIAL BUILDING PHASING: THE PROJECT WILL BE CONSTRUCTED IN ONE PHASE PRE -APPLICATION MEETING DATE: JANUARY 3rd, 2011. PROPOSED MAXIMUM ONSITE LOT COVERAGE (IMPERVIOUS COVER): ROADS/ALLEYS & PARKING= 41,258 sf (0.95ac) SIDEWALKS= 14,818 sf (0,34 ac) TOWNHOMES= 10,126 sf (0.23ac.) BUILDINGS= 161488 sf (0.38 ac)- TOTAL = 82,700 sf (1.90 ac) EXISTING BELVEDERE BOULEVARD & PATH DRAINING TO RETENTION BASIN= 75,355sf (1.73 ac) RITUREIAPPROVED APARTMENT COMPLEX DRAINING TO RETENTION BASIN= 375,911sf (8.63ac) PARKING REQUIRED: TOWNHOUSE UNITS w/ PARKING IN DRIVEWAYS & GARAGES: (2.25 SPACES J UNIT) x 19 UNITS= 43 SPACES NOTE: 2 SPACES PROVIDED ON EACH LOT NET REQUIRED TOWNHOUSE PARKING: 43 SPACES - (2 SP/LOT) x 19 LOTS = 5 SPACES APARTMENTS (NO GARAGES) (2 SPACES/ UNIT) x 8 UNITS = 16 SPACES NON-RESIDENTIAL: OFFICE - 12,580 SF (80%) x 1 SP/200 SF - 50 SPACES RETAIL - 5,008 SF (80%) x 1 SP/108 SF + (12,5138-5,000)SF (80%) X 1 SP/200 SF = 70 SPACES RESERVE AT BELVEDERE MODIFICATIONS: THE PROJECT PROPOSES TO ELIMINATE 6 ON -STREET PARKING SPACES ON THE ADJACENT DEVELOPMENT. THESE 6 SPACES MUST BE ACCOMMODATED WITHIN THE PUBLIC PARKING AREAS AT BELVEDERE TOWN CENTER. TOTAL SPACES REQUIRED IN SHARED LOT = 5 + 16 + 50+ 70 + 6 = 147 SPACES PARKING PROVIDED: 96 SPACES IN PUBLIC PARKING AREAS NOTE: A SEPARATE SHARED PARKING REQUEST HAD BEEN SUBMITTED AND IS UNDER REVIEW. TOPOGRAPHY/SURVEY: BOUNDARY SURVEY COMPILED FROM BOUNDARY PLATS & SURVEY INFORMATION FROM THE REZONING OF THE PROPERTY. BOUNDARY LINE ADJUSTMENT PREPARED SURVEYING BY LINCOLN EYING AND RECORDED 2/2/113 AT D.B. 3846 PG. 518, TOPOGRAPHY OBTAINED BY WW ASSOCIATES FROM JULY 2009 AND FIELD VERIFIED BY COLLINS ENGINEERING IN JUNE OF 2011, BENCHMARK: EXISTING MANHOLE ALONG BELVEDERE BOULEVARD IS 470.3' (SHOWN ON SHEETS 1 & 2). DATUM: ELEVATIONS BASED ON NAD '83. FLOODPLAIN INFORMATION: THIS PROPERTY IS LOCATED OUTSIDE OF THE FLOODPLAIN LIMITS AS SHOWN ON THE FLOOD INSURANCE RATE MAP, MAP NUMBER 51003C8279D, EFFECTIVE DATE FEBRUARY 4, 2005. STREAM BUFFERS: THERE ARE NONE ON THIS SITE. WATERSHED: UPPER RIVANNA RIVER WATERSHED EXISTING VEGETATION: CLEARED, SLOPING PARCEL WITH GRASS COVER ON 50%+ OF THE SITE, ACCESS: THIS DEVELOPMENT WILL ACCESS THE PUBLIC ROAD BELVEDERE BOULEVARD VIA PRIVATE ROADS AND PRIVATE ALLEYWAYS. CURB AND GUTTER AND STORM SEWER SYSTEMS WILL CONVEY DRAINAGE WITH THIS DEVELOPMENT. PER BELVEDERE CODE OF DEVELOPMENT, THE MINIMUM SETBACKS FOR TOWNHOMES WITHIN BLOCK 2 ARE AS FOLLOWS: FRONT BUILD -TO FROM STREET: 8-16' SIDE SETBACK: 0° REAR SETBACK: 10' PER BELVEDERE CODE OF DEVELOPMENT, THE MINIMUM SETBACKS FOR COMMERCIAL, MULTIFAMILY OR CIVIC USE WITHIN BLOCK 2 ARE AS FOLLOWS: FRONT BUILD -TO FROM STREET: 5' SIDE SETBACK: 5' REAR SETBACK: 10' NOTE. FOR STRUCTURES WITH FRONTAGE ON MORE THAN 1 R.O.W,, THE BUILD -TO LINES SHALL APPLY ONLY TO THE PRIMARY ELEVATION. MASSING & FORM: BUILDING MASSING, FORM AND HEIGHT IS GOVERNED BY THE BELVEDERE COiDE OF DEVELOPMENT & SHALL NOT EXCEED 50 VERTICAL FEET. THE MAXIMUM NUMBER OF EMPLOYEES WILL BE 70 EMPLOYEES. RETAINING WALLS: RETAINING WALLS ARE SHOWN AND LABELED ON THE GRADING PLAN. ALL RETAINING WALLS HIGHER THAN 4' SHALL HAVE A GUARD OR HANDRAIL. RETAINING WALLS SHALL BE CONSTRUCTED OF SEGMENTED BLOCK. SITE AREAS: RECREATIONAL AREA: 0.181 ac. (5.211/o) *OPEN SPACE: 8.35± ac. (10.2%) * OPEN SPACE INCLUDES THE AMPHITHEATER & PAVILION AREA, BUT CONSERVATIVELY DOES NOT INCLUDE THE PARKING LOT ISLANDS � 1now• '• 1 111. , CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON PLANS IN AREAS OF CONSTRUCTION PRIOR TO STARTING WORK. CONTACT ENGINEER IMMEDIATELY IF LOCATION OR ELEVATION IS DIFFERENT FROM THAT SHOWN ON THE PLANS, IF THERE APPEARS TO BE A CONFLICT, AND UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLANS. NO CEMETERIES WERE FOUND ON THE PROPERTY DURING THE FIELD INVESTIGATION. 1 �ML t � • � i i ✓ f C ' , ` .PRIO]ECT, TMP 6aAs-oA-so .,`. STARKES, LORETTA ! ,fi{ /!, s 3t i it LIMITS j a G ORARTHUR L ZONED: R -a I'S�l��'� j � ��"A•+� r f''1!rf t"`; ,1{ r ii' • I / 1 y t ,^Y ; }s ,£"�f ax',,��*',r<P"Y,. Jy �9 A�� G ? < r A r v `w) pJ, -y.`.a"�" 10 'V. pQ l 'e gQRT V -f:l .r J -/-�'�h� s ° t t� ,Al V 0 a.i r 7 ?I far$ f 1"f r , r p � . � v� �� F ll fit' / � � � 1 � � !i iJ f n , rJjff'r„�'iP Jil F.'..�-yC rlrJJ /// 1/ f 7 r j ` fad A_ i {' u u� 'Y'"-,. r.''',.... t( I n ? - ds a . h r .. w` a :J „..i ..5 d`c �,.� „. _ ENC R,, a r ��.. tom: H grf nm -.TO 0 FXIMAiVHOLE r 4 �"$Y r 7 ,.-� `�-..s ff � `.t � �� - ...-_ k, 6 _. f 1g 9� te:1`wa1,0 i / Oxy 5> ■ `$EZVEAEi7ESTA77ONco -a TRU5T• HAU 5ER& STA 6 rn MANO •, E � SWM PLAN ��w z o U Y~ C m z .X LU co :DJ t L O ®y 1'a oz > ,: N RESERVE%�� SHEET LAYOUT SCALE: 1" — 0' 1 -a Sheet Title 1 J"HIS P.RaJffrT 2 E&S PLAN � SWM PLAN 0� z o U S� C �z z SU � B ©r�sl� LU co :DJ t L O ®y z oz =� i D L 0 caLU Uj ILL VICINITY MAP SCALE: 1" = i000' '� TH ° SCOTT �R. COLLINSZ� No. 35791 ,�. o � 0 Sheet List Table Sheet Number Sheet Title 1 J"HIS P.RaJffrT 2 E&S PLAN � SWM PLAN 0� z o U S� U� �z z SU � B ©r�sl� LU co :DJ U L O ®y z oz =� i D L 0 caLU Uj ■■ o< W 0� > DROP INLET &STRUCTURE N0.} w Ln Sheet List Table Sheet Number Sheet Title 1 COVER 2 E&S PLAN 3 SWM PLAN 2 TOTAL NUMBER OF SHEETS APPROVALS rE DEEM .'IyMENT OF COMMUNITY DEVELOPmEN'r PLANNER/ZONING ENGINEER. i INSPECTIONS ARB DEPARTMENT OF i IRE R.ESC UE ALBEMA:RLE 1✓OWNTY SERVICE AIJT- ORIT`q' VIRGINIA DEPARVIENT OF TRANSPORTATION HEALTH DEPARDAENT (COLLINS ENGINEERING IS NOT RESPONSIBLE OR LIABLE FOR ANY CONSTRUCTION OR (DAMAGES TO THIS PROJECT PRIOR TO ALL FINAL PLAN APPROVALS. • ' low ■I © z�3 Z a ■ a Uj LU z3 � �w 0� z 03 Z, CL �z FPOP—V 2n�8'I�D O I 0 �o - �- -,(P Wn10t�� L O ®y LEGEND oz =� i EXISTING CULVERT L 0 EARTH DITCH CULVERT DRIVEWAY CULVERT DROP INLET &STRUCTURE N0.} o � SHEET N0. BENCH MARK F� CURBT o LU CURB & GUTTER � a CLEARING LIMITS U PROPOSED PAVEMENT as VDOT STANDARD STOP SIGN EE sn Uj EC -3A DITCH— EXIS77NG CONTOUR y a 6.1 DEPTH OF EC -3A DITCH PROPOSED CONTOUR 200 EC -2 DITCH 240.55 PROPOSED SPOT ELEVATION TBC DENOTES TOP/BACK OF CURB S" "• DEPTH OF EC -2 DITCH TIB DENOTES TOP OF BOX APPROVALS rE DEEM .'IyMENT OF COMMUNITY DEVELOPmEN'r PLANNER/ZONING ENGINEER. i INSPECTIONS ARB DEPARTMENT OF i IRE R.ESC UE ALBEMA:RLE 1✓OWNTY SERVICE AIJT- ORIT`q' VIRGINIA DEPARVIENT OF TRANSPORTATION HEALTH DEPARDAENT (COLLINS ENGINEERING IS NOT RESPONSIBLE OR LIABLE FOR ANY CONSTRUCTION OR (DAMAGES TO THIS PROJECT PRIOR TO ALL FINAL PLAN APPROVALS. • ' low ■I r / © z�3 Z a ■ a Uj LU z3 � �w 0� z w CL �z UjU 0 �o Uo L O ®y 1 oz L 0 r / o J J z�3 a ■ a Uj LU � 0� z 0 CL � UjU 0 �o Uo L O ®y 0 0 0 c � 0 z�3 Uj LU L 0� z X CL � 70B NO. 0 Uo , 0 L 0 SCALE AS SHOWN it o � SHEET N0. o.. � F� o LU o � a U z EE sn Uj w Li ° z y a co z Li v� J p� j, a U� 0 a p o >0 > q Fn U :3a X N N F_ 0 0 c � 0 Uj LU :3> 0� z U. CL o� 70B NO. v 112049 o �a SCALE AS SHOWN it SHEET N0. o.. � va � � a E& S' GENERAL NOTES T C OL PLANS FOR EROSION AND SEDIMENT ON TR RAL C©NSTRUC7i®N NC IES GENE notified a week prior to the covin thorn must ben on 1. The lana au p approving y p - commencement of land one week prior to the comm raceme pre construction conference, p 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 YR 825-02-00 Erosion and Sediment Control Regulations. J. 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, oft -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the pian 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. S. 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. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7,• 00am to 9. OOpm. 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 shot/ reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbsfacre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbsf100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90ibsj1000sf, incorporated Into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbsfacre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbsfacre and consist of 95.o Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbsf100sf. Alternatives are subject to approved by the County erosion control inspector, 19. Maintenance. All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately: Silt traps are to be cleaned when 5OX 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- 2076) L TE, RUNOFF WMER A �a CONCRETE 10LITTEF? 1," SPECIFIC APPLICATION L+€iR V SH I Eo - "TIS METHOD OF INLET PROTECTION IS a �PPI.:CAf1I,1«s AT CURB INLETS HEY,ZE' PONDLNG N. FRONT OF THE STRUCTURE 13 NOT L1KFI,Y I,'0 C LTSE IT'�C(:�NVENIfs�1ICE OR T)�i�' kGE TO ADJAC;EN STriil C TURES AIND UNPROTECTED AREAS, GMkVEL SHALL RE sTDUr #a, #{35¢ OR 5 +C't)/ RSL AtrGRTa<,GATE _ - y 1 ,_... i 1 lea r�' r ! , � ' ��4.-,, y�, ° , �. � w •. ,. GAS LINE EASEMENT € 4 ' �. •��• ({ ,r ass F h; t � t t �°\ A tet' f/ f/ S 1h / J3'f�l , 'T�7 •v ra h a. rr - , ,� r'✓r ... rr kq 1 'F D.S. 2 , 1 _ q4_ :F J v i •_'.�.... - �"' „� 84 F J i „ + " :w Dd �` ses ,vv .. -qi 4 .> ,. ,...,. ..•. ,, ,.r,".a n ,,..r m..•:- . ,}v: ..•' y '�t,,, h\��h.,,,`�, 4 , `4 h, � � , ,r ,a .r � '. w ,. ''•g . � � .., � ` _ �.,,r r x : ',-. . ' ' ' .:Fir" t � t s, �, a d `' `'. h.:'.•.',, � i e' ( M .. - " ,r .. 7 is Yi s y+`� r. t 1V. �<r. f: 33 11/7 x r .°x z -;Is, lei SIGHT EASEMENT i ,F �A 1 VL sV. ,1_,e sa te ` PROPERTYD. D.B. 430$r PG. 239 $ €. + ,+ .A .7 R .£ '°°i t� e, e : , : ,. . , .1. .N� -.e .rat 'J•: LINE.. --- i.. r.,, x s r �. lir ✓'� �.. .1. 1 ,,,�•- "`"`.�- � i i LOCATION OF CONCRETE.. E INC , �, ,° 4�.>: 1 sir: i I f WASH OUT AREA. ,� 1 ,, ,, ... NOTES { : . + y y PS y y � x A STOCKPILE ISN'T NEEDED BECAUSE " �` �.,:� �i •�;,; .. . . . �T0 3 l �9 SCOTT R. COLLINSZ No. 35791 r�- THE SITES EARTHWORK IS BALANCED. i „ f/ 1 r r 2, IN ACCORDANCE WITH THE VESCH j t 1UJ < + SILT FENCE _ ':`s 1 ....... SPEC .0 SILT FENCE IS CAPABLE OF r . , ,' - ` �-.,1 "}., 3 S, �. ' ryk d TREATING 0.2 C OF _ _. IN A RUNOFF PER s00 � � . �' .. .,.... .:. �.: ��,�;� � ... ... ... _ LF OF SILT FENCE. + LOT ZZ P* g. DRAINAGE EASEMENT r ,. ,.t, �R 1 y <' r., DC PROPOSED ' p 1..E # D.B. 4308, PG. 249 " ` �y „,.-;=A: �: `;�. ' ... �" ... � �;. .. � • .. .. c� r \ �. x r < ;�� .� 1 f -�: BUILDING � .. - .. .. �, 1 , a< co LU r '' �. 1........ 1 n J {/ �, in < UJ Ce < ✓.. r CONSTRUCTION / `\ 1 l , E RA < , \ i 41 NCE \• o� w 1 ' NT ` 1 7, A , �, f �, a' w..,.. IJ ..' ..'. � rl "- .`' `, ...� �. _,-< ........ , .. ACSA•W TER &- � � �r.,.�� # 4' v' T R ,. r .. "SEWER'EASE'MENT ,'' "x= w & , as `+ `. { NQ .v,�p. . f . ; j : 4 .. ) 8 `11t_J c-1 z; a z . 4 39 ,y j r , UJ ,t< Ce Ce n} 1 TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES RED TOP GRASS SEEDING RATE NORTHa SOli1'Hb SEASONAL NURSE CROP FEBRURAY PLANT MAY 1 THROUGH AUGUST 15 MILLET att 511 3115 2115 511 911 SPECIES CHARACTERISTICS Acre a 1000 It, to 4o to to to to 4130 3125 11t1 4130 9!t IS✓IS OATS 3 bu. (up to l00 lbs., 2 tbs. X Use spring varieties (e.g., Noble). (Avesaliva} ra nut less than 54 lbs.) RYE' 2 bu. (up to 110 fbs., 2.5 lbs. X - X X - X Use fur tofu 1.11 s rdmgs, wimter (Seeale cereaie} naS leyg than 50 Ibs./ cover. Tolerates cold and tow U fPlfnSttn'C, GERMAN MPLI.E't 50 lbs, appm. # lb. X - Warm -season aanuad, D'.es at'. first Setaria iG4'tca frost_ May be added to summer 1111Xes, ANNUAL RYEGRASS` 60.ba. k°h Ibs. X - X X - X May be nddzst in tniXes. Will ( iu ¢raulri-flarum) mow out of moat stands. WEEPING ($ IN. S'h X - - X - Warru-season perenneat. May r (SVECiRASS bunch. Tolerates hut, dry slopes (FrxgpgE(}§ wmu(a} and acid, infertile omits. May be added to miXCi1. KOREAN 25 lbs. appmc. t'h X X - X X - Warm season annual legume. LESPEAEZA` dbs. these dates. - May r,IQI be plantexi between [hese dates. To)era+tes acid soils. May be �bp' C SfIQni9Gca} 9dC1UI t0 pYtA4S a Northern Pitximon;t and Mountain region, See Plates 3,22-1 and 3.22-2, b Southern Piedmontt and Coastal Plain. e May be used as a "ver crap with spring seeding. d May be used as a scaver crop with fall seeding. X May be planted between w u, trXAYrilt.: ;5t,',ALr; 2Q 0 14 20 40 80 31 FESCUE RED TOP GRASS SEASONAL NURSE CROP SEASONAL NURSE CROP FEBRURAY 16 THROUGH APRIL MAY 1 THROUGH AUGUST 15 MILLET AUGUST 18 THROUGH OCTOBER RYE NOVEMBER THROUGH FEBRUARY 15 c U these dates. - May r,IQI be plantexi between [hese dates. KENTUCKY 31 FESCUE RED TOP GRASS SEASONAL NURSE CROP SEASONAL NURSE CROP FEBRURAY 16 THROUGH APRIL MAY 1 THROUGH AUGUST 15 MILLET AUGUST 18 THROUGH OCTOBER RYE NOVEMBER THROUGH FEBRUARY 15 TOTAL LBS. PER ACRE 128 LBS 2 LBS. 20 LBS. 150 LBS ANNUAL RYE FOXTAIL ANNUAL WINTER RYE STONE 70' MIN. fJS PERMANENT SEEDING SCHEDULE CONSTRUCTION ACCESS J" SM -2A ASPHALT NO SCALE - (STD. & SPEC. 3.32 OF VIRGINIA 2 2'b TOP COURSE EXISTING EROSION & SEDIMENT CONTROL HANDBOOK, 3RD ED.) 29 PAVEMENT NOTES: s" MIN. 21A AGGREGATE BASE 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS APPLIED IN PROFILE ACCORDANCE WITH VESCH STD. 3.32 - STONE 70' MiN, 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON CONACCESSUCT70N WASHRAGK NACCORDANCE AVSDCOMPLETION OF WITH VESCH STD. 3.35. EXISTING 2Z 27. PAVEMENT i2Z 12' MIN.* GENERAL SLOPE X3:1 OR LESS) �1 POSITIVE DRAINAGE TO SEDIMENT OF INGRESS AND EGRESS OPERA TION TRAPPING DEVICE PLAN POSiI7VE DRAINAGE TO SEDIMENT TRAPPING DEVICE sEc rloN FiL TER A -A A minimum water tap of l inch must be installed with a minimum t inch baflcock shutoff valve supplying a brash hose with diameter or 7.5 inches for adequate constant pressure. Wash water must be carried away from the entrance to an approved settling area to remove sediment, All sediment shall be prevented from entering storm drains, ditches or watercourses. PAVED WASH RACK NO SCALE 1. SET POSTS AND EXCAVATi A 4"X4A TRENCH UPSLOPE ALONG THE LINE OF POSTS FLOW tii:3�'fii.' SOURCE: VA. DSWC Compacted Soil Nan-Erodable Liner -Flow 2. STAPLE WIRE FENCING TO THE POSTS. .;t SIL T FENCE sF (WI TH W1RE SUPI'OR T) NO SCALE J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT - 4.5 min. I PLATE 3.09-1 @) p TEMPORARY DIVERSION DIKE INTO THE TRENCH. FLOW (IN FEET ) 1 inch = 20 ft~ 4. BACKFILL AND COMPACT THE EXCA VATFD SOIL. � *MUST EXTEND FULL MOTH EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. reZ3 � J � s U ji UJ C p � C CL C C O V LLJ � C O q� s � -� cs- v x � v o LULLJLLJ c a �_.'y�t% o on C C 7M'y�% A � � 4 0Ul C o L U_JUJ C W o Li 0 Z \ 00 01� W � c LU � 4 � J CP �w t� W ZVJU 1GJ � � C L N Q Q � rs. to c U 1GJ � � C L N Q Q � rs. to APPROVED SWM NARRATIVE THIS DEVELOPMENT DRAINS l00% OF ITS RUNOFF TO THE TYPE III RETENTION TH 0 IIA�)I AtFKVVtL)UN tK 7HERE,5ERVEAT ELVEDEREAPARTMEN COMPLEX" ­�!SCOTT- R. COLLINSZ PLANS (SDP -2009-00097). THIS BASIN PROVIDES BOTH STORMWATER DETENTION r-) No. 3 5 7 91 l,�, AND WATER QUALITY FOR THIS DEVELOPMENT. �9 Jt THE APPROVED BASIN INITIALLY ALLOCATED 75,000 sf FOR BELVEDERE TOWN I01VAL CENTER HOWEVER THIS DEVELOPMENT PROPOSES 82 700 sf - �5�,Ivf (1V jN17, ZOPAP'l,"': R-4 THE REQUIRED REMOVAL RATE FOR THIS DEVELOPMENT, BELVEDERE BOULEVARD AND THE APARTMENT COMPLEX IS 6o%. THE ADDITIONAL 7,700 sf (82,700-75,000) PE III DOES NOT INCREASE THE PERCENT REMOVAL REQUIRED. THE APPROVED TY A RETENTION BASIN CAPTURING THIS SITE's DRAINAGE PROVIDES A REMOVAL THUS MEETING MINIMUM WATER QUALITY REQUIREMENTS. EFFICIENCY OF 65%1 '0 '00# ------ SEE THE CALCULATIONS SUBMITTED WITH THIS PLAN FOR ADDITIONAL DETAILS. 10 LU 10 lot f ... ... THE STORMWATER DETENTION FOR THIS DEVELOPMENT IS ALSO MET THROUGH A% -10 10 10 44 THE APPROVED RETENTION BASIN. DUE TO THE BASIN's LOCATION AND 0 T14AP 6, 2 - SA AW U All RESTRICTED AREA/VOLUME, AN ADDITIONAL 03" LOW -FLOW ORIFICE WAS z 0 B E L VE D 2,,,R E- ST 4TA))tV # PROVIDED ON THE MULTI -STAGE RISER WITH THE APPROVED PLANS THAT MEETS if -Tl ROBER-f __j 3 -HOUR DRAWDOWN REQUIREMENTS FOR MORE FREQUENT, THE VSMH's 30 t ZCTIED,�, Nb0 t_K, 11�1 , I I U SMALLER STORMS. BECAUSE OF THIS OVER -DESIGN THE 7,700 sf INCREASE IN (n Co Uj -j- j/ V LLJ Z) _j STRUCT f j IMPERVIOUS AREA IS NOT AN ISSUE AND THIS SITE IS STILL IN COMPLIANCE WITH OX j < D.A. 0.22 AC. V - 1,11h" W I < _,Oe , , 1 -3.9 REQUIREMENTS. SEETHE ATTACHED 24-HOUR SCS METHOD 0 0 Uj CW = MINIMUM MS 0.71 ca S1 rxu,, I U rx E I I-+ _j �;Z IV ` 'i CALCULATIONS AND THE ROUTING CALCULATIONS FOR EVIDENCE OF THIS. < -i Tc 5.0 4M !K f V D.A. 0 E,5ROM LU -y- - . , 5 Q� t A LT - .06 AC. Cw = 0.80 ROOF DRAINAG U) LU X_ 3" WN CL BUILDING & LA TC 5 0 MK 'z 'k, t Uj 65`2 SHALL BE PIPED TO dl TIOA1 > T d "0 5TR.:116 VIA D RAINS %i LU N j 4 'T)Vu_ y %k 4_, �VM�INIA�W MN� -yo or ry"Y�y ly f j 64 ,'-'A Al' T RE5iZ)LL`_ P, Al f f ir j 11 1 1 1 1"'. �� , 1. 1 K y e i f -A f �A c ­ W 13 4 _)j E 118' Ilk 4 STRUCTUR Z' D�A. = 0. 14 AC. 41 VA, Cw 0.70 je 5.0 MIN. j 6i 40' Z # Z STRUCTURq112 D.A. 0.01 AC. 7r. JrL CW 0.90 Te 5.0 17 'Y X 11 MIN. k URE12 Y, � - NlQ STRUCT y 7 R 4V -`hIlL L ff? E'D 51� D.A. O� 10 AC. >/ '-STRUCTURE 126'� Cw 0.78 '4) M A = n 'M Ar' IMPERVIOUS AREAS Existing Impervious Area 74,241 Proposed Impervious A ea 7,467 SF Total Existing & Proposed Impervious Area 81,708 SF Future Impervious Area 12,065 Note: Proposed& existing impervious area (81,708sf) associated with this plan is less than approved area (82,000sf). Future impervious areas will require additional SWIVI analysis and nutrient credit purchasing, to be completed at the time those areas are developed. Tc 5.0 MIN. Cw 0.87 Tc 5.0 MIN 40' L9 C10 CY) CF) D A 0.33 AC. STRUCTURE 108 FAME= CY) t4W CW 0.74 Tc 6.0 MIN. FUTURE CN C:) CF) E 126' TRUCTURE120' (N fLLJ D.A. 0.37 AC. CN D.A. 0. 19 AC. LLJ CW 0.80 Cw 0.81 Te 6.0 MIN. CL 12 TC 5.0 V) STRUCTURE 124' 771 Uj Uj 0 Cw 0.76 ICw 0.60 D.A. 0.35 AC. STRU TURE110 D.A. 0. L Tc 6.0 MIN 4 Tc 5.0 MIN Uj STRUCTURI 1061 fYA D.A. 0.06 A YU-4 U) Cw 0.71 D.A. 0.01 AC. Te 5 0 M I LU LU Cw 0.30 126 --.-,Tc 5.0 MIN. -0 L9 %A DEVE LO )MFNT D Till CL > LU 06 E102 LU fCD D.A. 0. 19 AC. qp r Cw 0.65 SIR-= M N�;M_ Tc 6 0 MIN STRUCTURE 156 R'B T L V) LU STRUCTURE130 D D A. 0.08 AC. D.A. 0.23 AC. so UW U.45 Uj A. 0.24 AC c 5.0 MIN. z STRUCTURE 104' LLJ C) ---- ------ 5.0 MIN. 5.0 CW 0.75 Tc Cw = 0.75 r STRUCTURE134 F7 Te 5.0 D.A. 0.04 AC. D.A. 0.12 AC z CW 0.90 LU Uj co - - - - - - 0.62 tTIC 6.0 WIN 1�7 - - ------ STRUCTURE 132' 104 D.A. 0. 13 AC. U) 1;4 ID :T I. 130 Te 6.5 MIN )2 Cw 0.67 '36 Fla, 4 STRUCTURE EX -28 ry > D.A. 0. 0.65 E CW TG 7.5 MIN. U) C3 CN EX 28 L li,� LU 0 LU t7u -0 :3 -GRAPHIC SCALE V,"I LEA 7. DE, R NO. JOB 12- 30 0 30 60 A DtV G 112 > FQ KAI- SCALE =30' 30 ft. Ulf' r SHEET NO. -a 0- 3 Go 100 Tc 5.0 MIN. Cw 0.87 Tc 5.0 MIN 40' L9 C10 CY) CF) D A 0.33 AC. STRUCTURE 108 FAME= CY) t4W CW 0.74 Tc 6.0 MIN. FUTURE CN C:) CF) E 126' TRUCTURE120' (N fLLJ D.A. 0.37 AC. CN D.A. 0. 19 AC. LLJ CW 0.80 Cw 0.81 Te 6.0 MIN. CL 12 TC 5.0 V) STRUCTURE 124' 771 Uj Uj 0 Cw 0.76 ICw 0.60 D.A. 0.35 AC. STRU TURE110 D.A. 0. L Tc 6.0 MIN 4 Tc 5.0 MIN Uj STRUCTURI 1061 fYA D.A. 0.06 A YU-4 U) Cw 0.71 D.A. 0.01 AC. Te 5 0 M I LU LU Cw 0.30 126 --.-,Tc 5.0 MIN. -0 L9 %A DEVE LO )MFNT D Till CL > LU 06 E102 LU fCD D.A. 0. 19 AC. qp r Cw 0.65 SIR-= M N�;M_ Tc 6 0 MIN STRUCTURE 156 R'B T L V) LU STRUCTURE130 D D A. 0.08 AC. D.A. 0.23 AC. so UW U.45 Uj A. 0.24 AC c 5.0 MIN. z STRUCTURE 104' LLJ C) ---- ------ 5.0 MIN. 5.0 CW 0.75 Tc Cw = 0.75 r STRUCTURE134 F7 Te 5.0 D.A. 0.04 AC. D.A. 0.12 AC z CW 0.90 LU Uj co - - - - - - 0.62 tTIC 6.0 WIN 1�7 - - ------ STRUCTURE 132' 104 D.A. 0. 13 AC. U) 1;4 ID :T I. 130 Te 6.5 MIN )2 Cw 0.67 '36 Fla, 4 STRUCTURE EX -28 ry > D.A. 0. 0.65 E CW TG 7.5 MIN. U) C3 CN EX 28 L li,� LU 0 LU t7u -0 :3 -GRAPHIC SCALE V,"I LEA 7. DE, R NO. JOB 12- 30 0 30 60 A DtV G 112 > FQ KAI- SCALE =30' 30 ft. Ulf' r SHEET NO. -a 0- 3