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HomeMy WebLinkAboutWPO201700041 Plan - As-built 2022-08-24GENERAL NOTES ORIVER/DEVELOPER: 07600-00—GO-05200 07600-00-00-052NO FORGE FARM, LLC JOSHUA OR MALLORY WHITE 195 RIVERBEND DRIVE 1179 SUNSET AVENUE EXTENDED C HARLOTTESVILLE, VA 22911 CHARLOTTESVILLE, VA 229903 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUI7E K CHARLOTIESWLL& VA 22902 (434)293-3719 TAX MAP NO.: 07600-00-00-05200 (D.B. 4561% PG 582) 07600-00-00-052NO (D.B. 4391, PG. 463) PROJECT AREA: ia40 AC ZONING: R-4 RESIDENTIAL, ENTRANCE CORRIDOR (ARB APPROVAL REQUIRED) DENSITY R-4 ALLOWABLE DENSITY FOR STANDARD LEVEL CLUSTER DEVELOPMENT 4 D.U./AG PROPOSED BONUS DENSITY 5X INCREASE FOR MAINTAINING OVER 10X OF THE EXISTING TREES ON THE PROPERTY. 4 UNITS/ACRE x 1.05X BONUS INCREASE — 4.2 UNITS/ACRE ALLOWABLE UNITS = 4.2 UNITS/ACRE' 10.40 ACRES = 4.17 UNITS PROPOSED DENSITY: SINGLE FAMILY DETACHED: 19 SINGLE FAMILY ATTACHED: 23 TOTAL PROPOSED LOTS: 42 R-4 DENSITY 42 D.U./10.40 Aa — 4.04 D.U./AC, OPEN SPACE: 3.96 AC (3S 1X) PRESERVED SLOPES: PRESERVED SLOPES EXIST ON THE PROPERTY AND ARE SHOWN ON THIS PLAN. POR7701VS OF THE COUNTY PRESERVED SLOPES HAVE BEEN FIELD SURVEYED 70 VERIFY THE LIMITS OF THE 25% SLOPES IN ALONG THE EDGES OF THE PRESERVED SLOPES. ANY PRESERVED SLOPE AREAS THAT WERE MODIFIED DURING THE FIELD SURVEY VERIFICATION PROCESS HAW BEEN BE ME47ED AS MANAGED SLOPES ON THE PROPERTY. MANAGED SLOPES: THE MANAGED SLOPES EXIST ON THE PROPERTY AND ARE SHOWN ON THIS PLAN. OFFSI7E DISTURBANCE. • NO OFFSIIE DISTURBANCE IS PROPOSED WITH THIS PLAN. SUNSET AVENUE EXTENDED SHALL BE UPGRADED WITH THE WINTERGREEN FARM PROJECT. BUILDING HEIGHTS: MAXIMUM BUILDING HEIGHTS SHALL NOT EXCEED 35 FEET SETBACKS: FRONT MINIMUM 5' FROM THE R/W AND MAXIMUM 25' FROM R/W BUILDING SEPARATION: 10' REAR: MIN. 20' REAR SETBACK, NO MAXIMUM SETBACK SIDE • NONE (SET_ BUILDING SEPARATION) FRONT LOADED GARAGE. MIN. 18' FROM R/W SIDE LOADED GARAGE- MIN. 5' FROM R/W SUBDIVISION STREETS: CURB dt GUTTER WATERSI•IED: THIS SITE LIES WITHIN THE MOORES CREEK WATERSHED, WHICH IS NOT A WATER SUPPLY WATERSHED. AGRICULTURAL/ FORESTAL DISTRICT: NONE TOPO & SURVEY TOPOGRAPHY PROVIDED BY A COM&NA77ON OF ROUDABUSH, GALE AND ASSOCIATES AND LOUISA AERIAL SURVEYS INC., JANUARY 2014, THE BOUNDARY LINE INFORMA770N IS PROVIDED BY ROUDABUSH, GALE, AND ASSOCIATES INFORMATION FIELD VERIFIED BY COLLINS ENGINEERING DUNE 2015 DATUM: NAD 83 EXISTING VEGETATION: MAINLY WOODED LIGH77NG NO LIGHTING IS PROPOSED PARKING: (2) OFFSTREET PARKING SPACES PER EACH SINGLE FAMILY DETACHED AND SINGLE FAMILY ATTACHED UNIT. (1) PARKING SPACE PER 4 SINGLE FAMILY ATTACHED UNITS REQUIRED. 23 VA/4 = 575 (6 PARKING SPACES REQUIRED) 7 ON STREET PARALLEL PARKING SPACES PROPOSED PHASING: NONE: PROFFERS- NONE: BUILDING SITES: EACH PARCEL CONTAINS A BUILDING SITE THAT COMPLIES WITH THE REQUIREMENTS OF THE ALBEMARLE COUNTY ZONING ORDINANCE. BURIAL SI7ES NO CEMETERIES WERE FOUND DURING FIELD INWS77GA77ON OF THE SITE: STREAM BUFFERS• NO STREAM BUFFERS ARE LOCATED ON THIS PROPERTY PER THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE RECREA77ONlAL AREAS- A 70T LOT WITH A MINIMUM AREA OF 6,000 SF IS PROPOSED ON THE PROPERTY. THE REQUIRED AREA FOR THE TOT LOT IS 200 SF x (23 MUL77—FAMILY UNITS) = 4,600 SF. THE MINIMUM 70T LOT AREA IS ACHIEVED WITH THIS PROPOSED DESIGN. THE 70T LOT SHALL MEET THE MINIMUM REQUIRED TOT LOT AMEN177ES AS SPECIFIED IN THE ALBEMARLE COUNTY ZONING ORDINANCE. RETAINING WALL&• RETAINING WALLS ON THE PROPERTY SHALL HAW A MAXIMUM HEIGHT OF 10. LANDSCAPING' STREET TREES ARE PROPOSED ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE W7H ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS TRASH: EACH LOT SHALL HAVE ITS OWN INDIVIDUAL TRASH RECEPTACLE. IMPERVIOUS AREAS: PROPOSED ROADWAY.• 0,99 AC PROPOSED SIDEWALKS: 0.25 AC PROPOSED ATTACHED HOMES• a78 AC. PROPOSED DETACHED HOMES 6.57 AC. TOTAL 2.59 AG N07E• THIS PROJECT IS NOT LOCATED JAI7HIN A DAM INUNDATION ZONE. TOTAL AREAS (1Q40 ACRES ON THE PROPERTY) OPEN SPACE. 3.96 ACRES R/W: 1.43 ACRES LOTS 5.01 ACRES NOTE.- ALL OPEN SPACE WITHIN THIS PROJECT SHALL BE OWNED AND MAINTAINED BY THE HOMEOWNERS ASSOCIATION SUNSET OVERLOOK RD. WPO PLAN I- SAMUEL MILLER DISTRICT ALBEMARLE COUNTY, VIRGINIA N ' 1 ♦ ry1 1 �� / ♦ 1 - L / ` 1 � 1 �� ,� ♦� \ ZX wrp J\\ 0 r s � NOTE'. WTHIN PROPOSED STREET RIGHT—OF—WAY AND AREAS DEPICTED AS OPEN SPACE ON THIS PLAN SHALL BE DEDICATED TO PUBLIC USE ON THE SUBDIVISION PLAT. D.B. —, PG NOTE., OF THE 3v96 ACRES OF OPEN SPACE ON THE NOTE: PRESERVA77ON AREA ON 774E TOTAL PROPOSED TREE THE PROJECT SITE IS 2.52 ACRES (24.2X). TOTAL AREA OF PROJECT, APPROXIMATELY 252 ACRES INCLUDES PRESERVED TREE PRESERVA77ON OUTSIDE OF THE PRESERVED SLOPES IS SLOPES AND OPEN SPACE DEDICATED FOR STORMWATER 1.11 ACRES (10.7X). MANAGEMENT USES SHEET LAYOUT SCALE: 1" = 100' CERTIFICATION OF AS -BUILT SURVEY I, JOSEPH C. MEDLEY, A LICENSED LAND SURVEYOR IN THE COMMONWEALTH OF VIRGINIA, DO HEREBY CERTIFY THAT THE AS -BUILT CONDITIONS DEPICTED HEREIN ACCURATELY REFLECT THE CONSTRUCTION OF THE REFERENCED SITE. THE FACILITIES HAVE BEEN FOUND TO BE IN CONFORMANCE WITH THE APPROVED CONSTRUCTION PLANS UNLESS NOTED OR IMPLIED OTHERWISE. C, ��� 0403003385 LICENSE NO. AS -BUILT SURVEY NOTES: pS TH pI DI tJOSEPH 1. HORIZONTAL AND VERTICAL DATUM IS MATCHED TO THE ORIGINAL SURVEY BY OTHERS AND SUBSEQUENT DESIGN (AS PROVIDED TO THIS FIRM). C. MEDLEY'2. BOLD COORDINATES SHOWN FOR STORM Lic. No.3385 STRUCTURES (PER COUNTY REQUIREMENT) 6-24-2022 SURv��o� ARE PRESENTED IN NAD 83 FOR SPATIAL RELEVANCE. 3.SWM FACILITY EASEMENT INSTRUMENT NO: 201700008154. pr�'r r- VICINITY MAPS SCALE: 1" = 750' V / W Ei y O O r Vi 8 Z Uac m ac Z O == O a03 z go U W N CL c W a (*) COVER SHEET HEREON REFLECTS WP0201600004 PLAN SUBMITTAL; PORTIONS OF FINAL SIGHT PLAN DESIGN ALONG SUNSET AVENUE EXTENDED WERE REVISED INCIDENTAL TO FINAL SITE PLAN. GRADING AND DRAINAGE DESIGN OVERLAY REFLECTS CONTENT OF FINAL SITE PLAN HEREIN. SHEETS 3 & 4 OF WPO PLAN ARE SUPERSEDED BY FINAL PLAN SHEETS 7 AND 8 AS NOTED BELOW SHEET 11, STORM PROFILES, ARE INCLUDED FROM FINAL SITE PLAN. Sheet List Table Sheet Number Sheet Title I COVER (J $ 7 GRADING & DRAINAGE PLAN (*) -4— 8 GRADING & DRAINAGE PLAN s E.SON & SEDIMENT CONTROL NARRATIVE & BET -AILS (**) 9 STORMWATER MANAGEMENT PLAN **� io STORMWATER MANAGEMENT PLAN DETAILS 6 TOTAL SHEETS r**1 \/CMP AMFNIIhAFNT *9 r .O\/FR SHFFT INCFRTr=n SHEETS 9 & 10 HEREIN REFLECT REVISIONS PER VSMP WP0201600004 AMENDMENT #2. 1 1 I 1 ti AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 DATE OF SURVEY: APRIL 22, 2020 (AUGUST 24, 2022. FIELD MEASURE RISER ORIFICES) BOLD AND OR BOXED INFORMATION IS AS -BUILT LEGEND EXISTING CULVERT CULVERT Q DROP INLET & STRUC7URE NO. CURB CURB & GUTTER PROPOSED PAVEMENT EC-3A DITCH 6. DEPTH OF EC-3A D17CH EC-2 DITCH g' DEPTH OF EC-2 DITCH EARTH DITCH DRIVEWAY CULVERT + BENCH MARK . . . . CLEARING LIM17S T VDOT STANDARD STOP SIGN +� EXISTING CONTOUR PROPOSED CON70UR 24as5 PROPOSED SPOT ELEVATION 7BC DENOTES TOP/BACK OF CURB TIV DEN07ES TOP OF BOX APPROVED by the Albemarle County Community Development Department Date 08/25/2022 File WP0201600004, Amendment #2 WP0201700041, Amendment #2 SCALE 1 "=50' 0 50' 100' W %0 N a t9 z w w z L9 w N Z J J 0 z a 0 a Y O O J OC w O H w z N 0 a 0 0 a 0 C z o Ld W W Z c 0 j5 o= L a� W A b V IW o 0 c Ln c 0 U Iw °« 0 $� o U r CL 0 Eo � •L.r O ; zG Y E i°C° z Y W° Z2 Jo c ° o � 'o o° a� oc Q. v is a u o O p O y y C e8 ry o y .•• FF cm 0 mS nE LLj La o c c JOB NO. 152115 0' $ 4 SCALE 1u = 50I c L 0 SHEET NO.it a 1 �� G 7 EMi� L'��� �It-'°.� Irk`",mil L A =` I; tom, =-�� �'�■ice -'� L7 i�71IMML- -h��_ 1•f�l._.�1•� �� III I .alb _�rf�� 1�rit �i��Siti�f ��y�isr► J;I•lg t1Im�yV,'ONs--uaa&L4ai i t7*�` re0TAdVAVNSARMrm 14 • 1 a 11 11 U • 1 U GENERAL NOTES DEVELOPER: ORIGINAL TMP 07600000005200 ORIGINAL TMP 076000000052NO FORGE FARM, LLC JOSHUA OR MALLORY WHITE 195 RIVERBEND DRIVE 1179 SUNSET AVENUE EXTENDED CHARLOTTESVILL£, VA 22911 CHARLOTTESVILLE, VA 229903 ENGINEER- COLONS ENGINEERING 200 GARRETT Sr. SUITE K CHARLOTTESVILLE VA 22902 (434)293-3719 TAX MAP NO.: ORIGINALLY 07600-00-DO-05200 Ill 456A Pa 562) ORIGINALLY 07600-00-00-052NO (D.B. 4391, PG. 463) PROJECT AREA: f0.40 AC ZONING: R-4 RESIDENTIAL, ENTRANCE CORRIDOR ( WITH PRIOR ARB APPROVAL) DENSITY R-4 ALLOWABLE DENSITY FOR STANDARD LEVEL CLUSTER DEVELOPMENT.- 4 D.U./AC: PROPOSED BONUS DENSITY: 5X INCREASE FOR MAINTAINING OVER 109 OF THE EXISTING TREES ON 7HE PROPERTY. 4 UN175/ACRE x 1.05X BONUS INCREASE - 4.2 UNITS/ACRE ALLOWABLE UNITS = 4.2 UN17S/ACRE • Ya40 ACRES = 43.7 UNITS PROPOSED DENSITY SINGLE FAMILY SINGLE FAMILY DETACHED: 19 ATTACHED: 23 TOTAL PROPOSED L07S 42 R-4 DENSITY 42 D.U./1a40 AC: = 4.04 D.U./AC. OPEN SPACE• -196 AC (381X) PRESERVED SLOPES: PRESERVED SLOPES EXIST ON THE PROPERTY AND ARE SHOWN ON THIS PLAN. MANAGED SLOPES THE MANAGED SLOPES EXIST ON THE PROPERTY AND ARE SHOWN ON THIS PLAN. OFFS17E DISTURBANCE: NO OFF57TE DISTURBANCE IS PROPOSED WITH THIS PLAN. SUNSET AVENUE EXTENDED SHALL BE UPGRADED WITH THE WINTERGREEN FARM PROJECT. BUILDING HEIGHTS MAXIMUM BUILDING HEIGHTS SMALL NOT EXCEED 35 FEET SETBACKS• FRONT: MINIMUM 5' FROM THE R/W AND MAXIMUM 25' FROM R/W BUILDING SEPARATION: 10' REAR: MIN. 20' REAR SEIBAM NO MAXIMUM SETBACK SIDE • NONE (SEE BUILDING SEPARA770N) FRONT LOADED GARAGE: MIN. IB' FROM R/W SIDE LOADED GARAGE: MIN. 5' FROM R/W SUBDIVISION STREETS: CURB & GUTTER WATERSHED: THIS SITE LIES WITHIN THE MOORES CREEK WATERSHED, Ni IS NOT A WATER SUPPLY WATERSHED. AGRYCULTURAL/ FORESTAL DISTRICT: NONE TOPO do SURVEY- TOPOGRAPHY PROVIDED BY A COMIBINA77ON OF ROUDABUSH, GALE AND ASSOCIATES AND LOUISA AERIAL SURVEYS INC:, JANUARY 2014. THE BOUNDARY LINE INFORMA77ON IS PROVIDED BY ROUDABUSH, GALE, AND ASSOCIATES 1NFORMA770N FIELD VERIFIED BY COLLINS ENGINEERING ON JANUARY 3, 201a DATUM: NAD 63 EXISTING VEGETA7TON: MAINLY WOODED IN PRE -DEVELOPMENT STATE LIGHTING: NO LIGHTING IS PROPOSED PARKING: (2) OFFSTREET PARKING SPACES PER EACH SINGLE FAMILY DETACHED AND SINGLE FAMILY ATTACHED UNIT. (1) PARKING SPACE PER 4 SINGLE FAMILY ATTACHED UNITS REQUIRED. 23 -VA/4 - 5.75 1 PARKING SPACES REQUIRED) 7 ON STREET PARALLEL PARKING SPACES PROPOSED PHASING: NONE PROFFERS- NONE BUILDING 577ES EACH PARCEL CONTAINS A BUILDING 517E THAT COMPLIES WITH THE REQUIREMENTS OF THE ALBEMARLE COUNTY ZONING ORDINANCE. BURIAL SITES NO CEMETERIES WERE FOUND DURING FIELD INWS77GA77ON OF THE 51TE STREAM BUFFERS NO STREAM BUFFERS ARE LOCATED ON THIS PROPERTY PER THE ALBEMARLE COUNTY WATER PR07EC71ON ORDINANCE RECREA77ONIAL AREAS A 70T LOT WITH A MINIMUM AREA OF 6,000 SF IS PROPOSED ON THE PROPERTY. THE REQUIRED AREA FOR THE 70T LOT IS 200 SF x (23 MUL77-FAMILY UNITS) = 4,600 SF. THE MINIMUM 70T LOT AREA IS ACHIEVED WITH THIS PROPOSED DESIGN. THE TOT LOT SHALL MEET THE MINIMUM REQUIRED TOT LOT AMENITIES AS SPECIFIED IN THE ALBEMARLE COUNTY ZONING ORDINANCE RETAINING WALLS• RETAINING WALLS ON THE PROPERTY SHALL HAVE A MAXIMUM HEIGHT OF 10. LANDSCAPING: STREET TREES ARE PROPOSED ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS TRASH. EACH LOT SHALL HAVE ITS OWN INDIVIDUAL TRASH RECEPTACLE. IMPERVIOUS AREAS- PROPOSED ROADWAY 0.99 AC PROPOSED SIDEWALKS: a25 AC PROPOSED ATTACHED HOMES a76 AC: PROPOSED DETACHED HOMES. a57 AG TOTAL 2.59 AC. NOTE.• THIS PROJECT IS NOT LOCATED WITHIN A DAM INUNDA7701V ZONE. TOTAL Al (10.40 ACRES ON THE PROPERT1) OPEN SPACE• .196 ACRES R/W: 1.43 ACRES L07S• a01 ACRES NOTE.• ALL OPEN SPACE WITHIN THIS PROJECT SHALL BE OWNED AND MAINTAINED BY THE HOMEOWNERS ASSOCIATION SUNSET OVERLOOK SAMUEL MILLER DISTRICT ALBEMARLE COUNTY, VIRGINIA 1 1 ' 1 5 Z. X Uri NOTE: OF THE .3 96 ACRES OF OPEN SPACE ON 7HE NOTE• THE 70TAL PROPOSED TREE PRESE7RVA77ON AREA ON PROJECT, APPROXIMATELY 2.52 ACRES INCLUDES PRESERVED 7HE PROJECT SITE IS 2.52 ACRES (242X). TOTAL AREA OF SLOPES AND 293 ACRES INCLUDES PRESERVED OPEN SPACE TREE PRESERVATION OUTSIDE OF THE PRESERVED SLOPES IS DEDICATED FOR STORMWATER MANAGEMENT USES: 1.11 ACRES (m m). 0 1 0 i \ I \ \ 1 ` \ I SHEET LAYOUT SCALE: V = 100' VSMP AMENDMENT #2 PROPOSED CHANGES: Q1 THE PREVIOUSLY APPROVEDTWO BIORETENTION BASINS OUTFALUNG INTO THE DETENTION CELL HAVE BEEN REMOVED. THIS RESULTS IN THE FOLLOWING UPDATES: A. REVISED DETENTION CELL GRADING AND THE REMOVAL OF THE ADJACENT RETAINING WALL B. REVISED WATER QUALITY & QUANTITY COMPUTATIONS QC. REVISED ORIFICE CONTROL STRUCTURES ON THE RISER WITH THE REMOVAL OF THE BIORETENTION BASINS, ONE OF THE OUTFALLS WAS REQUIRED TO BE RELOCATED TO OUTFALL INTO THE AMENDED DETENTION CELL AS -BUILT SURVEY NOTES 1. HORIZONTAL AND VERTICAL DATUM IS MATCHED TO THE ORIGINAL SURVEY BY OTHERS AND SUBSEQUENT DESIGN (AS PROVIDED TO THIS FIRM). 2. BOLD COORDINATES SHOWN FOR STORM STRUCTURES (PER COUNTY REQUIREMENT) ARE PRESENTED IN NAD 83 FOR SPATIAL RELEVANCE. 3.SWM FACILITY EASEMENT INSTRUMENT NO: 201700008154. 1 14 I I t, AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 DATE OF SURVEY: APRI L 22, 2020 (AUGUST 24, 2022. FIELD MEASURE RISER ORIFICES) BOLD AND OR BOXED INFORMATION IS AS -BUILT m r © 1 /y Ry ,Kc •_NCI E 87'6 i z �3 to �}�u� _�;,�+•-e - _ VICINITY MAP SCALE: 1" = 750' A SHEETS 9 & 10 HEREIN REFLECT REVISIONS PER VSMP AMENDMENT #2. LEGEND EXISTING CULVERT CULVERT Q DROP INLET & STRUCTURE Na CURB CURB & GUTTER PROPOSED PAVEMENT EC-3A DITCH bw DEPTH OF EC-3A DITCH EC-2 DITCH 6- DEP7H OF EC-2 DITCH EAR7H DITCH DRIVEWAY CULVERT + BENCH MARK CLEARING LIMITS _- MOT STANDARD STOP SIGN 2o EXS77NO CONTOUR PROPOSED CON70UR 24a.55 PROPOSED SPOT ELEVA7ION IBC DENOTES 700/19ACK OF CURB T/t? DEN07ES TOP OF BOX SCALE 1 "l 0 50' 100' L9 z w w z L9 w z J J 0 u CA Vill CO M N N CA N W J` rW r U W F_ w it w a 0 N z W 0 z W ^Q CL 0 0 loe W 0 Lu U) z rZ) 1J ) w ru O W m JOB NO. 152115 SG►LE AS SHOWN SHEET NO. 1 G SCALEso i` + 5 \ �� 1 1�1 I I\•} I///�^ /ii% it It •� i inch -- so )& `>� s ` g----sI qk IF IIIIIIIII­, II'!',1 JI J (11ila ol if �RoP(— — IFprE) it MAN EDISLOPI /TP3eI�� �OVE / /' 1LN711FF��1lNEDI — � \ \ ` 14 I A E s c l I 1 1 l / / / — — � \ \ \ �` \ — i — PRE51IiVEgS�L7PES — T _ I / \� �_ } 1 I}I Is. I sl I —`' ITJ E it it IF f � � 1 if on yWINTEBSREEEN FARM/� I / r _ — M Tom- _ M / DEVEJOPMENT(UNDER I 1! / // / t r� / I 1 it I 1 I / XPARAVeREVIEIUQ,It it It GRAD SCALE eo 0 40 a + ISO 3l01 it/ It 1 inch = 80 & >� s S— — / IP r \ �� 4 l / r ,///11 / ,�'// ! It it IF sarBAlEAra= � It10 /j'� RO\iE6§WM FOREST OPEN SPACE EASEMENT®- 3/A'/ / // / / / / •�•JJr — I / � y ROyE LI,/ E Pk ARI // // j j % //=�81 i �_� i = = C�Lr N 7 I 0ED 3phrrs.J lasso Bonn / II EENDEe�VEJOPENT(u 1 �EPAR it I&VEREVIewt, / _ — — _ — — �(,_It I ,1 i LOT � I I / 1 \,1 :�.!•. i:•L•D, •'.!.� T7ASlT!•fL .�L'L Z lJC7_Tf 07A T.OR3CT;^R IMPLEMEMrs CREATNE DESIGMSiAliSNMWrWIMTHESUMDRM6VTi LSRE-DESR•7r"(ESO)--- TECHNIQUES OUTLINED IN THE JULY 2013 DRAFT VSMI. EXAMPLES INCLUDE THE CONFIGURATION OF THE ROAD/LOT LAYOUT TO KIND412E ITS IMPERVIOUS FOOTPRINT AND THE ALIGNMENT OF THE ROADS HORIZONTALLY AND VERTICNIYTO REDUCE GRADING IMPACTS. THE ENO_RESI LISA___ I • - : •• 4 •. • .. •.• . .S1S.t;�1: .^R^.TS P.S?.[: .l=-lT ,TT 33,�,•1T�TT��++,i "Y ryl! J Y i'YL."i: \."If V r ►ni i7%ii'I'4U 1i' General Construction notes for Stormwater Management Plans z, All dams and constructed fil Ito be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riser joints are to be watertight within stormwater Management facilities. 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. Total PrDpould ImpmyllousAms Roadway 43,222 bf Si 1 111 IDAK If RW m as Attached Itomas Am sf Raddslces- Detached Homes 24,7W of 112,825 sf Roadway 20,219 sf Skb=k 4,096 sf Reddimoo AnKhad Homes 33,940 sf Resldences Detached Homes Z6W sf EiftiftimparylouslAnoli, &M sf Subern'e' Iminrvlous Arne Roadway 23AM of Sldwraft 6AW of Rollft ees- Detached Homy Vwd EdIftimilloyll:1141111.1111ilem, 7 sr INFORMATIONAL; NO AS -BUILT DATA HEREON. DENOTES SWM FOREST AND OPEN SPACE EASEMENT & TREE PRESERVATION / WOODLAND PRESERVATION NOTE: THE SWIM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUI DANCE SET FORTH BY THE DEG IN THE VIRGINIASTORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, VEGETATED STATE, EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (eg., TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMESAYEAR). z 0 2 i ZW in o0 Viz LU Cd 0 ch N Z "' 0) N cM W IN N Z > LU wZJ F-' > > Q W _ � w 2 U) � o L W z Z Q > Q U) W Q ow Y W ® Q Ul F W i Z W 01 F-; oij i WWN L 0 CV ) LU U t5 5 - LU a. Ln JOB NO. 152115 SCALE 1r=8o' SHEET NO. 9 DETENTION'CELL SERVING SUBAREAS'A' &'B` SCAL o' N.-3889281.55 ul E.-11475414.11 RIPRAF APP CL Ifl fiEALf-4�30' a TRACTO TO MODIFY R BARREL XISTINGIS CL.III PRI '• EPROFI THIS SHEET INVIN- - �� /�3( ~fio' �" - FO�AI9DIFKATIOJ DETAILS --Igs%Our CONTRACTOR TO FIELD -FIT & INSTALL A NEV DOGHOUSE MANHOLE (STORM STRUCTURI iA) AT THE EXISTING HDPE OUTFALI. CONTRACTOR TO INSTALL A NEW HDPE PIPI OUTFALL(STORM STRUCTUREiB) EXTENDING TO THE AMENDED DETENTION BASIN. CONTRACTOR SHALL UTILIZE EXISTING STOCKPILE / FILL DIRT TO GRADUALLY SLOPE / FILL THE AREA BETWEEN THE APPROVED TOT LOT & THE tOVEBRIFRAPFNERGYDI ATER / STREAM BAW.. RIP NOT AW*. CONTRAOIDRSHAULAMN� RIOS rlIZ7s► •" r /�� a a" III • I ' -i a~31i�: I`-Il ��� � I i �... .'Hl r • is 10 IN w c ��- - DETENTION BASIN, AS SHOWN. S PROFILE��y� Q l lG{�AVEg ON THIS SHEET FOR ADDITION �� ) I l l / /473.6'/ �� \\ \ SBO l / �\ t. 15" it - - - - \ \ \ \ \ \ \ \ \ 1 1 1 ( 1 srj "Y `.473.5'1 \ \ \ \ \ ii \ \ \ 1 INV- 7.07 a .10 1 2.21 15 INV IN 49140 irry ( INV OUT 49137:i'. M kTERSHED SUMMARY DETENTION CELL ROUTING :ing Method: Storage -indication Basin Input Data Hydrograph o Basin: Detention Basin with Amended Riser and Volume a-Yr 24-Hour SCS storm event Inflow(cfs) 7.438at 1z.oz(hrs) 6ContourArea5 discharge(ds) o.445at s3.58(hrs) Elevation(ft) Area(sr) ComputedVol.(cy) water level (R) 478.7og rt s3.6o (hrs) 474.00 2819.00 0.0 storage(cy) 699.469 476-oo 374Lao 242.4 478.00 4799.00 558.2 Hydnsgraph1 480.00 SW7.e0 gS6.5 2-Yrz4-Hour SCS storm event 482AO 7264.00 1446,s irrBow(cfs) 8.23141t a2.o2(hrs) 483.50 8353.00 1111".6 d-acharge(cfs) o.6soat s3m(Fas) water level (ft) 479.032 at 23.0 Ors) Stert_Ekvation{ftj 474.0o Vd.(c)I) o.00 storage (cY) 748.722 Hydrograph a ao-Yr a4-Hour SCS storm aver[ inflow(cfs) 26.444at 11.02(Ias) 5 OutletSt Outlet struc-ture3 discharge (ds) 5.o33 at sz.4o(las) Outlet structure o Culvert Weir name: Existing Emergency SpNway water level Olt) 482.591at sa.4o(hrs) (cY1 �• storagemultiple name: Existing Barrel ksgth (ft)Bo eoo 1 sideangle 63.43o Hydrograph 3 discharge outofrlser coefficient 3.000 soo-Yr24-Hour SCS storm event DOn) 25.000 invert(ft) 482.25o infow(cFs) 32•74gat az.o2(hrs) h(in) o.000 multiple I discharge (cfs) 19o at 1x o6 (hrs) Length (R) 78.000 discharge through dam water level (M 48a.367at zz,o60as) Slope 0005 storage(cy) 1546.566 Manning'sn 0oz3 Outlet structure 4 Inlet coeff. Ke o.5w Orifice Equation constant set 3 name: RAISED Existing Riser Invert (ft) 469.000 am§M 12.566 Q diameter or depth (in) 48.000 1 Outlet structures width forrect(in) 0.000 s / MHD TOP=493.44 INV 1N=482.54 15" HDPE (S) INV 1N=482.52 15" HDPE (SE) INV OUT=482.14 15- HDPE (N 15" HDPE APPROVED Pro-Detfebpnwrlt APPROVED PoWDenlop wit 1-ywr Fbw, 2rVwr Fbw, U4var Flow, Are, i-yeer Fbw, 21eer Flow, 10-Vmr CN Are, ac. ers ds cis CN ac. cra cis Flow, ds W 8L5 2.91 0.46 111711111 5.78 10' 97.9 11A1 9.06 3 93 14.39 7L9 3.28 VCR 63.5 4.82 2.58 3.11 8.50 TntaV 77 M Trish 1LM &M 3.0 1&28 Aroe of EWatbn DeEerltlo0 Cd Vbhene Contom 474 2r819 0 476 3,748 "a 4W son 25,825 482 7,264 3111.00115 A AS -BUILT ELEVATION VOLUME TABLE STAGE STORAGE TABLE ELEV AREA (sq. ft) DEPT H (ft) AVG END INC. VOL. (CU. ft.) AVG END TOTAL VOL. (CU. ft.) CONIC INC. VOL. (CU. ft.) CONIC TOTAL VOL. (CU. ft) 474.00 2,572.71 N/A N/A 0.00 N/A N/A 475.00 3,533.53 1.00 3053.12 3053.12 N/A N/A 476.00 4,022.14 1.00 3777.84 6830.96 N/A N/A 477.00 4,533.07 1.00 4277.60 11108.56 N/A N/A 478.00 5,063.51 1.00 4798.29 15906.85 PUA N/A 479.00 5,618.97 1.00 5341.24 21248.10 N/A N/A 460.00 6,197.74 1.00 5908.36 27156.45 N/A N/A 481.00 6,799.38 1.00 6498.56 33655.02 N/A N/A 482.00 7,42547 1.00 7112.43 40767.44 N/A N/A 483.00 8,574.29 1.00 7999.88 48767.32 N/A N/A 484.00 9,194.81 1.00 8884.55 57651.88 N/A N/A 48500 9,958.90 1.00 9576.85 67228.73 WA N/A STAGE STORAGE TABLE ELEV AREA (sq. ft.) DEPT H (ft) AVG END INC. VOL. (CU. ft.) AVG END TOTAL VOL. (CU. ft.) CONIC INC. VOL. (CU. ft.) CONIC TOTAL VOL. (CU. ft.) 474.0 2,572.0 N/A N/A 0 N/A 0 483.5 8,865.0 10 54326 54326 51338 51336 DETENTION CELL MAINTENANCE z. DETENTION BASIN SHALL BE MAINTAINED IN ACCORDANCE WITH THE MINIMUM REQUIREMENTS DESCRIBED BELOW. 2. MAINTENANCE SHALL OCCUR ANNUALLY EACH SPRING, AND AFTER THE INITIAL 6 MONTHS FOLLOWING COMPLETION OF THE BA.SIN's CONSTRUCTION. 3. EACH MAINTENANCE INSPECTION SHALL INCLUDE: 3.-L VISUAL INSPECTION -ENSURE THE BASIN FLOOR AND SIDE SLOPES ARE STABILIZED WITH A VEGETATIVE GROUND COVER. THIS MAY INCLUDE MULCH, GRASS OR SHALLOW ROOTED PLANTS SUCH AS JUNIPERS. TREES ARE PROHIBITED WITHIN 25' OFTHE RISER AND EMBANKMENT. 3.2. CHECK FOR SEDIMENT BUILDUP OR TRASH AND REMOVE IT 3.3• INSPECT BASIN SIDE SLOPES FOR EROSION AND REPAIR 3.4. CHECK INFLOW POINTS FOR CLOGGING, REMOVE ANY SEDIMENT 3.5. LOOK FOR BARE SOIL IN CONTRIBUTING DRAINAGE AREA, AND STABILIZE IMMEDIATELY 3.6. SPOT RESEEDING -IMMEDIATE STABILIZATION OF BARE OR ERODING AREAS WITH GRASS COVER 3.7. REPLACE ANY DEAD OR SALT KILLED PLANTS AND GRASS r=� MHD TOP=484.98 INV IN=481.64 18" HDPE (SE) INV OUT=477.24 18" HDPE (NE) Orifice coefficient 0.500 romL- NEW Low -Flow Orifice Invert(It) 48s.000 area oo34 multiple s diameter or depth (in) z 50o discharge into riser ; width for red.pn) o.wo coeFficlent o.600 irwert(fl) 474.000 multiple 1 discharge Into riser Outlet structure z Orifice name: NEW Mid -Flow Odfice area (sf) o o87 diameter ordepth (in) 4.000 widthforred.On) DAM coefficient 0.600 invert00 478-500 multiple a discharge intoriser AMENDED PDstrDMIDPr ant Ara, 1-y=r Fb% 21cer Flow, 10 jear CH ac. crs cis Flow, is 76A K19 Q45 0.61 5118 63.5 4.82 Z58 3.11 8.50 Tofaa 11.01 3.03 3.72 13.53 ROUND TRANI'1iRANH RUK 0 18 tf ul aRA�B p IIIDN AAQ■aN Or�0. ■ BQtli IPNIN 0 TOP OF TRASH RACK= 483.69 IeloEv�w ®mr!m WIN 0 WTI 0 IOC} SOL= ■ � ■t�fi� >rr-�t�Jt�t�� Inflow HVdroaraohs 4 Inflow Hydrographs Hyd KS ph 0 name: a-Yr 24-Hour SCS storm event Area (acres) 6.%go CN 76.400 Type 2 rainfalL P (in) 3.500 time of conic. (hrs) o.3600 time increment On) o.ozoo time limit (hrs) 30D00 fudgefactor a-o0 routed true peakflow(c(s) 7.440 peaktime(hrs) 31.me volume(cy) ss56390 Hydrograph a SCS name- z-Yr 24-Hour SCS storm event Area (acres) 6,ago CN 76.400 Type 1 rainfall, P On) 3.7o0 thne of conc. (hrs) o.3600 time increment (hrs) o o2oo timelimit(hrs) 3o.000 fudgefector 3.00 routed true peakflow(cls) 9.232 peaktime(hrs) sz,os8 volume(cy) az79•S97 Hydrograph 2 SCS name: as-Yr 14-Hour SCS storm event Area(acres) 6.sgo CN 76,400 Type 2 rairdall,P(in) 5.600 time oPconc.Ors) 0.3600 time lncreme"is) o.o2o0 time limit(hm) 3o 000 fudgefactor 2.00 routed true peakfiew(ds) s6.447 peaktime(hrs) sao18 volume (cY) 2.556.384 HYd SCSPh 3 name: lo0-Yr 34-Hour SCS storm event Area (acres) 6.2.90 CN 76.400 Type 1 rainfall, P On) 9.000 time of cone. (lrs) o.3600 time incremem(hrs) 0.0200 time limit (hrs) 3o.000 fudge factor 1.00 routed true peakflow(crs) 32.755 peaktime(hrs) s2=8 volume (Cy) 5091.292 AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 DATE OF SURVEY: APRIL 22, 2020 (AUGUST 24, 2022. FIELD MEASURE RISER ORIFICE, BOLD AND OR BOXED INFORMATION IS AS -BUILT lemma D� � sr181DR8tTs td�f�t 011f■tl8ellelti08i ■Itli■■f nri■a■eln■I■ O�tl• ■IAOefiIrDAOY�NIN Ia�Atm+llata■tt�.fua BIDE tlI■8!F IerDes tl� BASIN NOTES: s. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. N SHALLADHERE TO ALL OSHA REQUIREMENTS. ADDITIONALLY, SPECIALATTENTION SHALL BE GIVEN TO THE CONSTRUCTION SHORING ASSOCIATED WITH THE BIORETENTION BASIN EXCAVATION. TRASH RACKS TO BE INSTALLED ON ALL ORIFICES PER VSMH TECHNICAL BULLETN #7. RISER ORIFICE COEFFICIENT = 0.5 6 '0+11 . a+' i t_ .rtr�J1L{J'_3T %4-.1 I- t La-Ir H'. 0+50 1+00 1+50 2+00 2+50 3+00 's w�'aralr 'ARR6 200 AMENDED DETENTION CELL III&W4 aaa.a I - , - d Ilr*f� adirlY ere r ri L-----------j ■ [fed fthim soft FOUOATIDN t�AN ■ANotT WIN as �r.r+ r i�iYr� alit ltandla ekr rd■BlY eelel IK SIWN 4111- -w Ieae.asaJerwer�alrirr.r 3+50 3+75 PROFILE SCALES 1 =5 M W I..L VJ J m Q O ZO a z Z W O � rn O II� En Y! W ? W ce m f � ;: c3 z w w z 8 z w (n z 0 U `o s>� L9 � 03 r c� CV 03 G z 0) ee>_ M a r z a a a t LLJ � a N O C WC� N ® J WQ Z Q LLI I•,U c � Z C�1\ z c 0 - W I.IJ O a L9 O W V 0 J o fs IX W 1 Y LLI ® LLl O c ~ J Q' 0 tn C I- W 5 L 0 U z W W �z W Z o o= _In ��U^z 8 J � ww I� L J _ I z a o a OQ� N a U • r Y uj a JOB NO. 152115 SCALE AS SHOWN SHEET NO. 10 AS -BUILT SURVEY BY TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 DATE OF SURVEY: APRIL 22, 2020 (AUGUST 24, 2022. FIELD MEASURE RISER ORIFICES) BOLD AND OR BOXED INFORMATION IS AS -BUILT INV INV I INV SEE: VSMP AMENDMENT#2 530 N h P P 530 STR:20DI-3B; Lo8' - TP- 52.02 o o rn nc INV OUT:520�gTO 18 o v 519. 525 L6 525 c / rx O i-O J F z z m \ 520 0 ?O 520 III N Z> Z> 9 515 / 122 5 510 7 510 * 0'I 505 505 0 500 STR:2 MH TP=493.75 I N: 488.95 TO 4 N: 488.95 TO 16 JUT: 488.85 TO 495 v o� 490 490 485 Lr 485 ID N .In g In m In of r: In o 0 vi N 9+75 10+00 sa+oo a+oo 13+00 13+75 STR20-STRz 505 505 L R oMi � a o 500 50 p N v N 500 i O I P 7 I. m m STR:3o DI-3B• L=4' o 0 d ° TP= 494.26 STR:3z DI 49 02 ~ P m n Z 2 5 INV IN: 5.35 IN !, O M IN OUT TO z8 INV OUT: TO 48558 o F 495 F„z z..z M M 495 Do .zZo I _ 490 2A rr 490 8IV1.40' B. WIL -STM 3 33 48S 2 15'�CL ill HOP 485 INV. OUT=482.00 25 7 15"CLIIV HDPE 118.48 �® F p,44% HDPE V1 CL III" 3.5p 239.54 0.65 % 18" CL III RCP LF 34.4•z LF .55% 148o 79.1aLF�ln.51% 6 0.58% 60 480 SE AM NDMEVSMP T#2 475 475 �0 °n W 0 o s 0 x Lto m ,„ In ^ In In 0 co O1 �p S N W.t ei m It 01 S O '� Kf r%1 I I d 'tt 9+75 10+00 11+00 %2+00 13+00 24+00 15+00 16+00 16+50 STR34-OUT SCALE 1 "=50' 0 50' 100, 520 N 'I 520 s ° 5 O STRao DI-3B; L=4' o n O ~ o TP= 508.82 tl 515 INV IN: INV OUT: 02.6 TO 8 502.18 '' 502.01 0 ~ 515 `O STIR DI-3 = ' � Z o P o N N TP= 503.06 497.20 F 0. > > N N � � INV IN: 0 o INV IN: 493.92 5� h ' INVOUT 49"8-TO6 omow000 510 eq 3.85 j� i 0o 0 N ND P 505 p � J / z5" CLIII LF C� � 505 a ?..o.°°," " >> F Z I Z 0 Z 0 p"/° 11 233 9 u~i ,c O OR Krl 15 CL III DPE m001jco � Q� 38.nLFQ3io% 00 500 �Q 5 In In 2 N Tzzp FW a > > >, iA I- Z Z Z 495 8" /L �5 495 SEE.' V. MP yr AMEN MENT#2 5 Dp 7' 15" CL II I RCP y 3 15" CL III R STM- fz 45 LF Cal4-."% won490wasobs LF C�? ° 490 1• ° �5"CLY11R�9 C °94 8.32 6-5 114.5 yLF UT=488.80 „ z4 CL III RCP 485 8.57 LF @ o.58% 485 m o .°i of `S r." N 9 �o c ° en o N °Go oLn r. a°fi Ion 6 cn t N a e V1 0 o In S V1 In 1n N ul 9+75 10+oo m rn 0 h Go v STRA DI-313; L4 503.06 n 0 497.20 INV IN iS7 ioT014 FY o > 505 493.92 TO io �^ "Z I N V OUT: #g4.08T0 6 495 15"CLI 32.13 495 9+75 10+00 10+75 STRz4-STR8 12+00 13+00 14+00 STR14-OUT VERTICAL GRAPHIC SCALE ( IN FEET ) 1 inch = 5 it. HORIZONTAL GRAPHIC SCALE ( IN FEET ) 1 inch = 50 ft. Soo Soo f 9+75 10+00 11+00 11+25 STR36-STR26 NOTE: 3' MINIMUM COVER REOUIRED OVER DRAINAGE PIPES. s5+00 a6+oo 17+00 495 495 STR:28 DI-3C; L=& TP- 489.41 484.24 038 STR:38 DI- L-a ' 483.64 Nu IN 0 30 TP= 489.56 INV OUT:4p83.6o-TO z6 [INV OUT:484.7rrT0 28 NOTE: CONTRACTOR SHALL PLACE FILL UNDER INLET(S) AT 95% COMPACTION & EMBANKMENT MATERIAL SHALL CONSIST PREDOMINANTLY OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8" IN THICKNESS BEFORE COMPACTION IN ACCORDANCE WITH VDOT 2007 ROAD & BRIDGE SPECIFICATION 303.04. AFTER 3' VERTICAL PLACEMENT OF FILL, CONTRACTOR SHALL EXCAVATE RECENTLY LAID FILL AND INSTALL COMPACTED VDOT STD. 23A STONE IN AN B'x8' O.C. COMPACTED 21AAREA CENTERED ONTHE INLET(S). CONTRACTOR SHALL REPEAT THIS OPERATION UNTIL AN 811x8' O.C. COMPACTED 22A STONE BASE IS INSTALLED BETWEEN THE EXISTING GROUND AND THE PROPOSED INLETS) BASE IN EFFORTS TO REDUCE THE RISK OF SETTLING. CONTRACTOR SHALL PROVIDE VDOT WITH FILL COMPACTION RESULTS PRIOR TO ROAD ACCEPTANCE_ NOTE: HDPE IS AN ACCEPTABLE SUBSTITUTION FOR RCP STORM PIPES Ilil 9+75 10+00 10+75 STR38-STR28 0.72% NOTE: ALL DRAINAGE STRUCTURES WITH A DEPTH OF 12' OR GREATER SHALL HAVE SAFETY SLABS IN ACCORDANCE WITH STANDARD SL-i AS FOUND IN THE 2oo8 ROAD AND BRIDGE STANDARDS. NOTE: ALL DRAINAGE STRUCTURES WITH A DEPTH OF 4' OR GREATER SHALL HAVE STEPS IN ACCORDANCE WITH STANDARD ST-a AS FOUND IN THE zoo8 ROAD AND BRIDGE STANDARDS. NOTES: s. ALLFILLTOBEPLACED AT95%COMPACTION. z. MINIMUM 3.5' OF COVER MUST BE MAINTAINED OVER W/L. 3. MINIMUM OF 1' OF VERTICAL SEPARATION FROM STORM SEWER & WJL AND a.5' OF SEPARATION BETWEEN WIL & SANITARY SEWER MUST BE PROVIDED. 00 U) N f Z W O 00�' N m W ce z am w z Ln z J 0 u O ti M N 04 O N LL Lu J_ O 2 U W H co L0 r W w�/ Q 0 N u u w S 8 U > Lu J C uj a w w uj a W N 2 �0 m z a Lu V / J z LL O O 13. Lu O W V 1 z od cz iW mW ul z �z coF3 ` In CL � V. J 0Z _ LL =o 0 0 O o +' L a 3 p c c W 0 3 a003 Q x C L T +' 0 E o V L O 3 JOB NO. 152115 SCALE 1�� = soy SHEET NO. 11 u � d2 LW `v 0 i0 ' 'E �E 8= 'a + V C v� u 9 2 C u o m � ad y o t L � 3