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HomeMy WebLinkAboutSDP201400023 Plan - Approved 2014-07-01r IN GENERAL NOTES: OWNER /DEVELOPER KESWICK CLUB, LLC 701 CLUB DRIVE KESWICK, VA 22947 PLAN PREPARER: ROUDABUSH, GALE & ASSOCIATES 914 MONTICELLO ROAD CHARLOTTESVILLE, VA 22902 TAX MAP PARCEL NO: 0800- 00- 00 -06OA0 PROPERTY ADDRESS: 960 CLUB DRIVE KESWICK, VA 22947 PROPERTY AREA: 5.39 AC ZONING: RA WITH ENTRANCE CORRIDOR OVERLAY (EC) EXISTING USE: MAINTENANCE FACILITY BUILDING SETBACKS: W Z_j FRONT (INTERNAL ROAD) 25' � FRONT (EXTERIOR ROAD) 75' SIDE 25' U REAR 35' DRAINAGE DISTRICT: RIVANNA RIVER WATERSHED: MIDDLE RIVANNA RIVER (THIS SITE IS NOT LOCATED WITHIN THE WATERSHED OF A PUBLIC WATER SUPPLY q 0U > o RESERVOIR.) BOUNDARY: THE METES AND BOUNDS ARE FROM A PLAT PREPARED BY RO!UDABUSH, GALE AND ASSOCIATES RECORDED AT DB 1467 PAGE 15. TOPOGRAPHY: THE TOPOGRAPHY IS FROM A FIELD SURVEY COMPLETED BY ROUDABUSH GALE & ASSOCIATES ON FEBRUARY 12, 2014. BENCHMARK IS EXISTING SANITARY MANHOLE 1 LOCATED BY ROUDABUSH, GALE AND ASSOCIATES ON FEBRUARY 12, 2014. DATUM: NAVD 88 CRITICAL SLOPE: NO CRITICAL SLOPES EXIST WITHIN THE PROJECT LIMITS FLOODPLAIN: A PORTION OF THIS PROPERTY LIES WITHIN AN AREA DESIGNATED AS ZONE "A" AS SHOWN ON THE FLOOD INSURANCE RATE MAP COMMUNITY PANEL NO: 51003CO325D, DATED FEBRUARY 4, 2005. THIS SITE IS NOT LOCATED WITHIN AN AGRICULTURAL- FORESTAL DISTRICT. THIS MINOR SITE PLAN AMENDMENT IS TO AMEND SDP -92 -026 KESWICK GOLF MAINTENANCE FACILITY FINAL SITE PLAN, SINGED APRIL 30, 1992 PROPOSED ADDITION: 24'X 96' POLE BARN (2,304 SF) PROPOSED USE: EQUIPMENT STORAGE PROPOSED BUILDING HEIGHT: NOT TO EXCEED 35' REQUIRED PARKING - 1 SPACE PER EMPLOYEE ASSIGNED TO WORK ON -SITE 25 EMPLOYEES (13 FULL TIME EMPLOYEES AND UP TO 12 PART -TIME EMPLOYEES) 25 PARKING SPACES TOTAL EXISTING PARKING - 27 SPACES REGULAR SPACES 2 HANDICAP SPACES 29 PARKING SPACES TOTAL TOTAL PROVIDED PARKING - 27 SPACES REGULAR SPACES 2 HANDICAP SPACES 29 PARKING SPACES TOTAL THE EXISTING PARKING SPACES LOCATED WITHIN PROPOSED FOOTPRINT OF POLE BARN WILL BE RELOCATED TO EXISTING PAVED AREA ON SOUTHWEST SIDE OF EXISTING BUILDING. TREE CANOPY COVERAGE REQUIRED - 10% OF SITE AREA 234,996 SF x 10% = 23,450 SF TREE CANOPY COVERAGE PROVIDED - 143,568 SF OF EXISTING WOODED AREA TO BE SAVED 143,568 x 1.25 BONUS FOR SAVING EXISTING TREES 179,460 SF (76 %) CANOPY COVERAGE PROVIDED LANDSCAPING ADJ. TO PARKING AREA REQUIRED - 5% OF PAVED PARKING/VEHICLE CIRCULATION 35,674 SF x 5% = 1784 SF LANDSCAPING ADJ. TO PARKING ARE PROVIDED - 19 EX. LEYLAND CYPRESS (92 SF EACH) 1,748 SF 4 EX. DECIDUOUS TREES (130 SF EACH) = 520 SF 2,268 SF (6.4 %) LANDSCAPED AREA PROVIDED TOTAL DISTURBED ACREAGE - 0.02 ACRES THERE IS NO SITE GRADING PROPOSED WITH THIS AMENDMENT. GENERAL CONSTRUCTION NOTES 1. 2. 3. 4. 5. 6. 7. 8. 9. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT -OF -WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENT OF THE PERMIT SHALL GOVERN. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED, AND MULCHED. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. TRAFFIC CONTROL SIGNS SHALL CONFORM TO THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. UNLESS OTHERWISE NOTED, ALL CONCRETE PIPES SHALL BE REINFORCED CONCRETE PIPE -CLASS III. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926). 41 h f t I(� • __.__.._ ��TH�ti OF v %P v ChristopMe C. Mulls n Lic. No. V6 ,,1, 031672 �sv� �,r'SIONAL 1 1 -- SCALE I"= 30' 30 15 0 30 60 t }y \ EX. WOODED AREA s` \ SCALE IN FEET (TO BE SAVED) 1 , ,y r ,L = , , 1 I jr U,. EX WEATHER a, Tk,41P 80 STATION KESWICK REAL ESTAT LLC , 35,A/- , 6 \ ` ICS! J S_ � OPEN F CC H - VII _— ._..._ � �U. Nom. RA TtP -- -._r -_ � ........_ — _.. �.._ .___ _ _ ... . _...... __ . ...._. _. -_ __.. — _ ..... _ _ .... - _..._ __ _ _ ..._ __ __ - _ _ _ _ _ _..._ _.. - _..... ... _.... _ - _ ......_. __.....- - . _-i t� 4 _.. —. - ...._._ _ � k f N G _ _ 562.1 ,tX F .� : i[7,F-7-71 � J / � - nn - 1 1 �\ - 24.00';' - \`o \ I EX. STORAGE BAYS ; \ _- EX ___. — 12 RELOCATED \j TELL I 6 PARKING SPACES ,1 -_ I.X. EL *E EX. ASPHALT m t �� Ix BRANS 0 Lj -- - i a{ r 1 EX E D ; r - MOUNIED AG EX. GOLF MAINTENANCE FACILITY C) i �� \�: 1 -STORY METAL BUILDING EX. WOODED AREA \ \ I\ \\ F.F. 363.62 F 238,46' ` }, (TO BE SAVED)' // a _X BLDG U_ EX. LEYLAND— EX. MH / Or O 12 EX. PARKING Cr' tiTYi \, v �I u� EX. tYU" SPACE TO BE \ _ RELOCATES DE - — ,' iv 5 X. EX. ASPHALT i + SPRINK.Li:_R- �' OPPOSITE SIDE x CIIEM A ,..� S \ • OF BLDG. D 7 F \. s, \ I I 2 F Y F= a _ _. u,9i3' N63.0 — ._.. - -- - -- — ... —_-- ( - -_ — 1 J1 EX. CUI:C;.I ON - -- — -- - S_AR li , _. - .. 3. i - AREA rJ?OP 44 N 6 4,` BLDG 0. PROP. POLE BARN 13y - {% EX. , SAN '�rl 1 AMOUNTED LIGHT - l i LIMITS CONSTRUCTION ---L_ ! \\ \ — A -� _ - -- 96 0� ; ry s 4 -- - -- 1070 :7Tt <E \M E 257.90 sUF Et: dc;Ur 2- 4'x12' INFILTRATION PITS ' I ( w \� \ TO AVOID REMOVAL - - EX.�`�� \ l l \ TP FIELD LOCATE -- EX. _- APd.i'1H L% R : s� \ \ OF EX. TREES ELEC. �'cp. (._ R DETAIL SEE SHEET 2 ) I I , EX. WOODED AREA TMP 80 -6013 I ^ KESWICK ESTATES UTILITY, (TO BE SAVED) LLB WASTEWATER TREATMENT SIiE 11 r \\ \\ \ 5 �� v \\ IM' 80 60A / v ZONING: RA � \ \ � � \ K. ` ° Ck% CI-luild, 1 MAlN I N1,NC E f M I:_fTl' / ZONING: RA tK I ` . CREEK , \� I \ CPU- IOU - - -- _ , F y_ , I __ _. $�.0 -- 311 1 64 / s '! -982.62' A_ - - i f,' -- 52 M _ - W. M ....._ -. __ - _ R � - 14720'J77- _ - •. _, _ _�-� -- - 113.69' EX. 100 ' FLUOR PLAIN -- -_._. EX. SAN. Nrri -- - - -- - EX D TCH IMP 80-62 -� KESWICK REAL I `� [ A TE I.l_.0 Kf S'W(I< f SIAT( CI.PEN SPA CI_ S -VIII ZONIrJC : KA APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNING / ZONNING 1 i 3c") 1.14 x E X. EP CLUB DRIVE 50' R/W Co �r _., IMP 80 61F / ICE:`) I K F.SIAHILS SE( 11 0N 5, 1 01 18 LEAH AH I. I RA(F r,, RUSH-L. JAC,, 1 ZONING: RA F REVISIONS APRIL 4, 2014 COMMENTS MAY 9, 2014 COMMENTS DATE FEBRUARY 27, 2014 SCALE HORZ: I" = 30' CONTOUR INTERVAL 2 FOOT T � a m W Z_j � (W �o N 5 O U l ' Qi N CL Q m O Qr ZO rz W cc: q 0U > o LL J 4� z 5J JD Q r Z 0 wa W 01 w O N cc rNn VN W Q W 0� o4 b< cc �j 0 Z n MGM V! V zZZ5 N z O Z05; M cp F� W Q. W �' Qco mz co ui0 V Lw0U 2 d W O Zm Z MW W Fiy ■ REVISIONS APRIL 4, 2014 COMMENTS MAY 9, 2014 COMMENTS DATE FEBRUARY 27, 2014 SCALE HORZ: I" = 30' CONTOUR INTERVAL 2 FOOT FILE NUMBER 2010 SHEET 1 of 3 Z_j W U m Q LL JD W . W Q b< cc Z i­- a N zZZ5 Z05; (L co ui0 V Lw0U W W (9 Zm Z MW W ■ M Q W Z O m Z —o �a. FILE NUMBER 2010 SHEET 1 of 3 I STORMWATER MANAGMENT NOTES: THIS PROJECT AND SUBSEQUENT DISTURBANCE AREA OF 0.02 ACRES IS LOCATED 960 CLUB DRiVE IN KESWICK. THE DISTURBED AREA CONTAINS A FEW EXISTING LANDSCAPE PLANTINGS WHICH WILL BE ATTEMPTED TO SAVED, THESE PLANS PROPOSE A SINGLE GOLF MAINTENANCE BUILDING, AND WILL BE PARTIALLY LOCATED OVER AN EXISTING IMPERVIOUS PARKING AREA, THE PERVIOUS PORTION OF THE DISTURBED AREA CONTAINS A FAIR COVER OF EXISTNG GRASS. MOST OF THE SLOPES WITHIN THE DISTURBED AREA ARE BETWEEN 2% AND 3 %, BUT A MUCH STEEPER SLOPE IS LOCATED ALONG THE EDGE OF THE BUILDING CONSTRUCTION, WHERE RUN -OFF PROTECTION WILL BE A PRIMARY CONCERN. SPECIAL ATTENTION SHALL BE PLACED UPON CONTINUAL STABILIZATION OF THE EXISTING FILL SLOPE BOTH DURING BUILDING CONSTRUCTION AND DURING THE INSTALLATION OF THE ROOF LEADERS TOT HE PROPOSED INFILTRATION PITS. WHEN COMPLETED, THE PROPOSED MAINTENANCE SHED WILL PROVIDE CONNECTING DOWNSPOUT TO THE TWO PROPOSED INFILTRATION LOCATIONS AT THE TOE OF THE EXISTING SLOPE. THE INFILTRATION PITS WILL PROVIDE WATER QUALITY AND ALSO MEET THE 10 YR PRE -POST DETENTION REQUIREMENT FOR THEIR POTENTIAL IMPACTS TO THE DOWNSTREAM RIVANNA WATERSHED. SOILS: THE SOIL TYPE PRESENT WITHIN THE DISTURBED AREA ONSITE CONSIST OF MANTEO CHANUM SILT LOAM (51 B) AND LIGNUM SILT LOAM (46B), WHERE THE INFILTRATION AREAS ARE PROPOED. THESE SOIL TYPES ARE CONSIDERED MODERATELY WELL DRAINED TO WELL DRAINED, AND INCLUDE LOW TO HIGH ABSORPTION RATES (Ksat). THE GRADED AREAS OUTFALL TO MANMADE GRASS LINED CHANNEL, AND ULTIMATELY TO THE WETLANDS, FLOODPLAIN AND TRIBUTARIES WHICH CONNECT TO RIVANNA CREEK. WATER QUALITY: THIS SITE IS LOCATED WITHIN THE RIVANNA CREEK PORTION OF CHESAPEAKE BAY WATERSHED. TWO ROOF - LEADERED INFILTRATION BMP'S HAVE BEEN DESIGNED AND IMPLEMENTED TO ACCOUNT FOR THE STORM -WATER POLLUTANT REMOVAL AND DETENTION REQUIREMENTS. THE PRIVATELY MAINTAINED DRAINAGE SYSTEM WILL BE LOCATED ADJACENT TO THE EXISTING FLOODPLAIN AND LARGER STORM EVENTS WILL SHEET -FLOW FROM THE TOP OF THE INFILTRATION PIT INTO THE FLOODPLAIN.. EROSION CONTROL MEASURES: ALL OF THE CONSTRUCTION IMPROVEMENTS CAN EASILY CONTROL EROSION WITH A CONSTRUCTION ENTRANCE, SILT FENCE PROTECTION, AND ANY NECESSARY TREE PROTECTION TO PRESERVE EXISTING TREES. GRADING OPERATIONS INVOLVE REMOVAL OF THE PAVEMENT IN PREPARATION OF THE PAD SITE, INSTALLATION OF THE ROOF LEADERS AND INFILTRATION AREAS, AND ANY REMOVAL OF ANY EXISTING TREES IN CONFLICT WiTH THE PROPOSED LAYOUT. DRAINAGE: THE LAND DISTURBANCE WITH THIS PLAN IS VERY CONSOLIDATED, AND IS LOCATED WITHIN AN EXISTING GOLF MAINTENANCE AREA. ALL ADDITIONAL DRAINAGE WILL CONNECTED AND FILTERED BY THE INFILTRATION PITS PRIOR TO ENTERING THE FLOODPLAIN. THE PROPOSED DRAINAGE PATTERN SHALL REMAIN SIMILAR TO THE EXISTING AND OUTFALL TO ITS ORIGINAL LOCATION. THE NET EFFECT TO THE WATERSHED OUTFALL LOCATIONS IS MINIMAL, PARTICULARLY SINCE THE PROPOSED IMPERVIOUSNESS WILL PRIMARILY BE CONTROLLED BY INFILTRATION AREAS. SEE SUPPORTING HYDROLOGY AND COMPUTATIONS. STORMWATER RUN-OFF: THE EXISTING PARCEL CONSISTS OF 5.39 ACRES, MOST OF WHICH IS COVERED BY MATURE GRASS AND NUMEROUS LARGE TREES. THE PROPOSED 2 YEAR RUNOFF FROM THIS NEWLY DEVELOPED PORTION OF THE SITE IS 0.24 cfs AND THE PROPOSED 10 YEAR RUN -OFF FROM THIS SITE IS ABOUT 0.31 cfs. THE IMPROVEMENTS AND RUNOFF ARE BEING MANAGED SO THEY WILL NOT OFFER ANY SIGNIFICANT INCREASE OR REDUCTION TO THE EXISTING RUN -OFF SCENARIO, WHICH IS UNDER HALF THAT OF THE PROPOSED RUNOFF. ADJACENT AREAS: THE SITE IS CURRENTLY SURROUNDED BY A GOLF COUSE COMMUNITY, INCLUDING RESIDENTIAL LOTS CONTAINING GRASS AND LARGE, MATURE TREE GROWTH. ANY CONTRIBUTING DRAINAGE AREAS, THAT ARE UNDISTURBED, MUST BE DIVERTED, AS NECESSARY, TO PREVENT THE INTRODUCTION OF OFFSITE DRAINAGE TO THE NEWLY DISTURBED AREA. PERIMETER EROSION CONTROL MEASURESMUST BE PROPERLY MAINTAINED TO PREVENT UNINTENDED IMPACTS TO ANY OFFSITE AREAS, AND PREVENT ANY SEDIMENT LADEN WATER FROM ENTERING THE OFFSITE WATERSHED. MAINTAINANCE: THE EROSION CONTROL MEASURES SHALL BE INSPECTED AT EACH SIGNIFICANT RAINFALL EVENT OR BI- WEEKLY AT A MINIMUM TO ENSURE PROPER FUNCTIONALITY OF THE EROSION CONTROL MEASURES. -o.•n 36 Y V A Soil Map - Albemarle County, Virginia 3 A ae> a zs' n a g Nap Scale: 1:1,310 ifpnnted on A lards= 3pe(11" x 3.5) sheet, d N2[Eis N 0 15 30 60 9u 0 100 233 300 0 VbpprojecUon: 9] VVeb h,1e17 r C- modinat- AGS84 Ed3e tics: U7V Zn 17N N,G934 Natural Resources Web Soil Survey 41312014 Conservation Service National Cooperative Soil Survey Page 1 of 3 381 (r2a'n Map Unit Description: Lignum silt loam, 2 to 7 percent slopes - -- Albemarle County, Virginia Albemarle County, Virginia 4613- Lignum silt loam, 2 to 7 percent slopes Map Unit Setting Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Map Unit Composition Lignum and similar soils: 85 percent Minor components., 3 percent Description of Lignum Setting Landform: Hillslopes Landform position (two - dimensional): Summit Landform position (three - dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from serecite schist Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: 40 to 60 inches to paralithic bedrock Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in /hr) Depth to water table: About 12 to 30 inches Frequency of flooding: None Frequency of ponding: None Available water capacity: Moderate (about 8.4 inches) Interpretive groups Farmland classification: Farmland of statewide importance Land capability (nonirrigated): 2e Hydrologic Soil Group: D Typical profile 0 to 9 inches: Silt loam 9 to 38 inches: Silty clay loam 38 to 58 inches: Channery silt loam 58 to 79 inches: Bedrock Minor Components Worsham Percent of map unit: 3 percent Landform: Drainageways Landform position (two - dimensional): Footslope Landform position (three - dimensional): Head slope, tread Down -slope shape.- Concave LSf?A Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey ROOF DRAIN INFILTRATION SYSTEM TIE -IN DOWNSPOUTS FROM EACH END OF BLDG. 12" MINIMM DEPTH 4" DOWNSPOUT CONNECTIONS UTILIZING PERFORATED PIPE FILTER FABRIC LINER Map Unit Description: Manteo channery silt loam, 2 to 7 percent slopes - -- Albemarle County, Virginia Albemarle County, Virginia 5113-- Manteo channery silt loam, 2 to 7 percent slopes Map Unit Setting Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Map Unit Composition Manteo and similar soils: 80 percent Description of Manteo Setting Landform: I nterfl uves Landform position (two - dimensional): Summit Landform position (three - dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from serecite schist Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: 15 to 20 inches to Iithic bedrock Drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 5.95 in /hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water capacity: Very low (about 2.1 inches) Interpretive groups Farmland classification: Not prime farmland Land capability (nonirrigated): 4e Hydrologic Soil Group: D Typical profile 0 to 6 inches: Channery silt loam 6 to 18 inches: Very channery silt loam 18 to 79 inches: Bedrock Data Source Information Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 10, Dec 11, 2013 (rSDA Natural Resources /3/ 42014 Iiiiiiiii Conservation Service Page 1 of 2 Web Soil Survey National Cooperative Soil Survey Short Version BMP Computations Albemarle County Water Protection Ordinance: Modified Simple Method Plan: Keswick Golf Maintenance Facility Water Resources Area: Preoarer: Date: 26- Mar -14 Project Drainage Area Designation overall Compliance L storm pollutant export in pounds, L = [P(Pj)Rv/12 ) [ C(A)2.72 ) Rv mean runoff coefficient, Rv= 0.05 + 0.009(1) P) small storm correction factor, 0.9 I percent imperviousness P annual precipitation, 43" in Albemarle A project area in acres in subject drainage area, A = 0.05 C pollutant concentration, mg /I or ppm target phosphorus f factor applied to RR v required treatment volume in cy, 0.5" over imperv. area = A(1)43560(0.5/12)/27 RR required removal , L(post) - f x L(pre) %RR removal efficiency , RR100 /L(post) Impervious Cover Computation (values in feet & square feet) Item ..... __. _. .... pre - development Area post - develops Roads Lenath Width subtotal Le Width no. subtotal walks 0 0 1 Lots 1 2 3 _. 4 0 35674 790 areas Area Are x 0.70 = 0 ues Area no. subtotal Actnely grazed pasture & Area yards and cultivated turf Active crop land Area Other Impervious Areas Impervious Cover Rv(post) v 0.95 3.6 L. New Development (For Development C f I (pre)> "Rv(I min. ent(For Deve 4"2'* Width oi_ _o 0 0 0, . 0 no 0 0 0 0 0 0 0' 0 465 x 0.70 = Area no. subtotal 0 9176 Area 008= o xooa= Area 0.25 = 0, x.0.25 = Ill Areas, existing impervious cover <= 20 %) )re) L(pre) L(post) RR / RR Area Type ).36 . 0.12 0.31 0.19 62% Development Area 12l6 0.06 0.15 0.10 62%, Drinking Water W< 06 0.07 0.18 0.11 62W Other Rural Land eas, existing imperviouscover> 20 %) )re)! L(pre) L(post) RR % RR Area Type * DIMENISIONS/LOCATION MAY VARY AS DICTATED BY SITE CONDITIONS SO LONG AS A MINIMUM OF 250 CUBIC FEET OF VOLUME IS OBTAINED PER PIT. ** ASSUMES A 40% STONE VOID RATIO, WHERE WQV REQUIRED = 192 CUBIC FEET 1514 ��yTH OF ;Oowml o C Christopher C. Mulligan Lic. No. 031672 AV G �0o��ssl ONAL 4/3/2014 Page 1 of 1 EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. CONTRACTOR SHALL ESTABLISH A STABILIZED SITE, AND NOT ALLOW ANY EROSION OR SEDIMENT TO EXIT. 2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. THERE ARE NO SOIL STOCKPILES TO BE LOCATED ONSITE. ALL EXCESS MATERIAL TO BE HAULED TO AN APPROVED. 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. CONTRACTOR SHALL ESTABLISH A VEGETATIVE COVER ON ALL DENUDED AREAS. 4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND- DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. SILT FENCE IS LOCATED TO ACCEPT AND PROTECT THE ENTIRE DENUDED AREA FROM CONVEYING SILT. 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES AFTER EACH RAINFALL EVENT. 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. DIVERT ALL OF THE UN- DISTURBED AREAS FROM ENTERING THE CONSTRUCTION AREA.. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE (3.0) ACRES. SEE SIZING TABLE FOR DIMENSIONS. B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY -FIVE YEAR STORM OF 24 -HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. THERE ARE NO SEDIMENT TRAPS OR BASINS PROPOSED.. 7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. THERE ARE NO CRITICAL AREAS ONSITE. 8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. RUN -OFF WILL BE REMAIN IN A SHEETFLOW PATTERN AND SHOULD NOT CONCENTRATE. 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. THERE ARE NO CRITICAL AREAS ONSITE. 10. ALL STORM SEWER INLETS THAT ARE MADE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. THERE ARE NO CRITICAL AREAS ONSITE. 11. BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. INSTALL INFILTRATION PITS PRIOR TO CONNECTION OF THE DOWNSPOUTS TO THE ROOFS. 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NON- ERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NON - ERODIBLE COVER MATERIALS. THERE ARE NO CRITICAL AREAS ONSITE. 13. WHEN A LiVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX -MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NON - ERODIBLE MATERIAL SHALL BE PROVIDED. THERE ARE NO CRITICAL AREAS ONSITE. 14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. THERE ARE NO CRITICAL AREAS ONSITE. 15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. THERE ARE NO CRITICAL AREAS ONSITE. 16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D. MATERIAL USED FOR BACK FILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. THIS APPLIES TO ALL UTILITY INSTALLATION OPERATIONS INCLUDING WATER, SEWER, POWER, CABLE OR GAS. 17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE' CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND- DISTURBING ACTIVITIES. CONTRACTOR SHALL MAKE PROVISIONS TO KEEP ADJACENT ROADS CLEAN FROM SOIL BUILD -UP. 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. CONTRACTOR SHALL STABILIZE SITE, AND OBTAIN INSPECTOR APPROVAL PRIOR TO REMOVING ANY EROSION CONTROL MEASURES. 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORM WATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24 -HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA: ALL CONCENTRATED RUN -OFF IS TO SHEETFLOW AND IS CONTROLLED BY PERIMETER SILT FENCING. . A. CONCENTRATED STORM WATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN -MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED. ALL CONCENTRATED RUN -OFF IS TO SHEETFLOW AND IS CONTROLLED BY PERIMETER SILT FENCING. B. ADEQUACY! OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: (1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR (a) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO -YEAR STORM TO VERIFY THAT STORM WATER WILL NOT OVERTOP THE CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS; THE CHANGES IN RUN -OFF ASSOCIATED WITH THE DEVELOPMENT ARE QUANTIFIED IN THE HYDROLOGIC ANALYSIS AND SUMMARIIZED IN THE NARRATIVE. WITH IMPLEMENTATION OF ROOF LEADERS AND INFILTRATION AREAS CHANGES ARE MINIMAL TO THE OVERALL SITE HYDROLOGY. A REVISIONS APRIL 4, 2014 COMMENTS DATE APRIL 4, 2014 SCALE HORZ: 1" = 30' CONTOUR INTERVAL 2 FOOT r T � v a W W _J v tp N W �N 0) rnm C-4 C-4 Q � LLL F� UZ�° O ® 00 -> o W z Ix LL J Z z Q N �7'I - Z Q rw (I J Z N QO cc 20 i r �0) 0 r N U , J W 'jcc ^ � � Q O LL O v, U. 0> oui N Zo F- CC Q r_ QCO Z Q ♦/`J ^ V J W _ cc Q �\ �./ ii W Z J fA O 0- REVISIONS APRIL 4, 2014 COMMENTS DATE APRIL 4, 2014 SCALE HORZ: 1" = 30' CONTOUR INTERVAL 2 FOOT FILE NUMBER 2010 [:: SHEET 2 of 3 i (��'/111N r Z W _J v (� J W J�ww LLL UZ�° W z z Q N �7'I - Z Q Iw- (I D z QO cc z o 2U � o W() U �w2cc W O > Z< UW��<M F- CC Q r_ I Z Q ♦/`J ^ V J W f'1P T. cc Q Z Y0 Z J fA O 0- FILE NUMBER 2010 [:: SHEET 2 of 3 i (��'/111N P " M x^ •r • ' it a �: x T Type: Eft HPF wan: 12W 12M, 0,31A lsaw 0.2A ease NA 210 02A l MIA 27 V, 0 13A t: 12,0clo InpAWAU 32W _ �, t P-Tcaw Is N o Tech _ l Speawtcauom J0 O UL U . O U 1 for wet . ,F A a � Recovery .. C-000hant complies This pvodud xA- .ffi BUILDING MOUNTED LIGHT DETAIL SPECIAL USE PERMIT CONDITIONS: on 0c no LOCATED ON CURRENT KESWICK COUNTRY CLUB GROUNDS BETWEEN STATE ROUTE 731, 616 AND 1 -64 TAX MAP 80 PARCELS 8, 8Z, 61, 60A, 62, 70 AND 31 IN THE RIVANNA MAGISTERIAL DISTRICT. TO ALLOW CONSTRUCTION OF GOLF COURSE AND ROAD IN THE FLOODPLAIN. APPROVAL IS SUBJECT TO THE FOLLOWING CONDITION: 1. COUNTY ENGINEER APPROVAL OF CONSTRUCTION ACTIVITY IN THE FLOODPLAIN OF CARROLL CREEK IN ACCORDANCE WITH 30.3 FLOOD HAZARD OVERLAY DISTRICT OF THE ZONING ORDINANCE SP 92 -58 (SUBDIVISION) TAX MAP 80 PARCELS 8, 8F, 8D2, 8D4, 8J, 8C, 8D3, 8T, 8Z (PART), 21A, 27, 29, 31, 41,41A, 43, 60, 60A, 62, 69, 70, 70A, 61, 96, 97, 100, 109A, 106 AND TAX MAP 94 PARCEL 42A. TO ALLOW REQUEST TO THE SUBDIVISION OF 280.2 ACRES WHICH IS COMPRISED OF 30 PARCELS OF RECORD INTO 75 RESIDENTIAL LOTS WITH AN AVERAGE SIZE OF 3 ACRES TO BE SERVED BY PRIVATE ROADS. APPROVAL IS SUBJECT TO THE FOLLOWING CONDITION: 1. DEVELOPMENT OF THE SUBDIVISION SHALL BE IN GENERAL ACCORDANCE WITH THE KESWICK ESTATE APPLICATION PLAN DATED AUGUST 25 1992 AND REVISED OCTOBER 26 1992; 2. APPROVAL OF SP 92 -59 FOR FLOODPLAIN CROSSINGS TO ALLOW PRIVATE ROAD CONSTRUCTION; 3. WATER RESOURCE MANAGER APPROVAL OF A WATER QUALITY IMPACT ASSESSMENT; 4. COMPLIANCE WITH STATE CORPORATION COMMISSION REQUIREMENTS FOR WATER AND SEWER UTILITY SERVICES; 5. IN THE REVIEW OF FUTURE PLATS AND PLANS PROVISION SHALL BE MADE FOR PROTECTION Of STREAM VALLEY AREAS LOCATED ON PROPOSED LOTS BY THE CONVEYANCE OF ADDITIONAL OPEN SPACE AND /OR RESOURCE PROTECTION EASEMENTS TO THE HOMEOWNERS ASSOCIATION OR OTHER ENTITY AGREEABLE TO THE DEVIELOPER AND THE COUNTY FOR THE PURPOSE OF PERMANENT PROTECTION OF THESE AREAS; AND 6. THE SERVICE FOR KESWICK UTILITY COMPANY TO INCLUDE ALL THOSE PARCELS OF LAND WHIICH ARE CONTIGUOUS TO THE LANDS CURRENTLY OWNED BY KESWICK CORPORATION WHICH ARE BOUNDED WITHIN THE LARGER AREA OF STATE ROUTE 616, STATE ROUTE 731, STATE ROUTE 744, INTERSTATE ROUTE 64 AND THE CSX RAILROAD RIGIHT -OF -WAY. REFERENCE IS MADE TO A LETTER AND MAP FROM PETE BRADSHAW DATED JANUARY 13 1993. SP 95 -12 TAX MAP 80 PARCELS 8, 8C, 8D2, 8D3, 8D4, 8J, 8T, 8Z, 21 A, 27, 29, 31, 41, 41 A, 43, 60, 60A, 61, 61 All, (62, 69, 70, 70A, 90, 93, 94, 95, 96, 97, 100, 106, 109A AND TAX MAP 94 PARCEL 42A. TO ALLOW 30 MORE LOTS THAN THE TO TAL NUMBER PERMITTED UNDER SECTION 10.3.1 AND SECTION 10.3.2 ON APPROXIMATELY 535 ACRES. APPROVAL IS SUBJECT TO T'HE FOLLOWING CONDITION: 1. DEVELOPMENT OF THIS SUBDIVISION SHALL BE IN GENERAL ACCORDANCE WITH THE KESWICK ESTATE APPLICATION PLAN DATED NOVEMBER 28 1994 AND REVISED APRIL 3 1995 AND MAY 1 1995; 2. FLOOD PLAIN CROSSINGS TO ALLOW PRIVATE ROAD CONSTRUCTION IN ACCORDANCE WITH SP 92 -059; 3. WATER RESOURCES MANAGER APPROVAL OF A WATER QUALITY IMPACT ASSESSMENT; SEWER 4. COMPLIANCE WITH STATE CORPORATION COMMISSION REQUIREMENTS FOR W ATER AND SEW UTILITY SERVICES" , 5. IN THE REVIEW OF FUTURE PLATS AND PLANS, PROVISIONS SHALL BE MADE FOR PROTECTION OF STREAMS VALLEY AREAS LOCATED ON PROPOSED LOTS BY THE CONVEYANCE OF ADDITIONAL OPEN SPACE AND /OR RESOURCE PROTECTION EASEMENTS TO THE HOMEOWNERS ASSOCIATION OR OTHER ENTITY AGREEABLE TO THE DEVIELOPER AND THE COUNTY FOR PURPOSES OF PERMANENT PROTECTION OF THESE AREAS. Date 29 h4ay -20 Tide F-m r the it! hve- For: l i nt' na,,,ve or company. 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"tf C WR AfCNA11 lltl; �setft`31 r < orf t CONSERVATION CHECKLIST TP TREE PROTECTION SNOW FEN :4GIOT11 F 1-MiCING, AND ARMORING CORRECT METHODS OF TREE FENCING v 0110 -00 TRIANGULAR 3042-� Source: Va. Ut)UW i -NCE Plate 3.38 -2 AI,TH BF vI� A4� Christopher C. Mulligan Lic. No. IL "6„t, 031672 �sv� IONAL A REVISIONS MAY 9, 2014 COMMENTS MAY 29, 2014 COMMENTS DATE APRIL 4, 2014 SCALE HORZ: 1" = 30' CONTOUR INTERVAL 2 FOOT T ; a Z W W t0 0O :5 CL L- 0) N o J0 O O O U > o k LL J LLj Z O � Uj F g LL ow CO 0 Z c N ZJ�Z Q �0 Q lf) c ° 0 W � r N oNt Nt 0 U �r-w (Lwq Y LL Q Q 2 U N C'3 �- a m >_ a zo 0 p4WawN Q W Z Q z ? O o C'3 :c a o W O REVISIONS MAY 9, 2014 COMMENTS MAY 29, 2014 COMMENTS DATE APRIL 4, 2014 SCALE HORZ: 1" = 30' CONTOUR INTERVAL 2 FOOT FILE NUMBER 2010 SHEET 3 of 3 1 Z W J W G J0 LL w UZz F g LL Z CO 0 Z ZJ�Z i Q H5 0 U �r-w (Lwq Y _oMcr O Q Q 2 U W C'3 �- a m >_ a � Q W Z Q v O m Z_ J O FILE NUMBER 2010 SHEET 3 of 3