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HomeMy WebLinkAboutSDP201800088 Plan - Submittal (First) Major Amendment, Final Site Plan 2018-09-21& STORMWATER MANAGEMENT SUBMITTAL SENIOR SUNRISE LIVING CONTACT INFORMATION PROPERTY OWNER: UNIVERSITY OF VIRGINIA FOUNDATION ADDRESS: P.O. BOX 400218 CHARLOTTESVILLE VA, 22904 OWNER/DEVELOPER: SUNRISE SENIOR LIVING CONTACT: SYDNEY RYAN ADDRESS: 7902 WESTPARK DRIVE MCLEAN, VA 22102 TELEPHONE NO: 703-854-0623 EMAIL ADDRESS: SYDNEY. RYAN@SUNRISESENIORLiVING.COM ARCHITECT: STUDIOTWENTYSEVEN ARCHITECTURE CONTACT: TODD RAY,FAIA, LEED—AP ADDRESS: 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 TELEPHONE NO: 202-939-0027 EMAIL ADDRESS: TRAY®STUD1027ARCH.COM ENGINEER: DRAPER ADEN ASSOCIATES CONTACT: E. CAMPBELL BOLTON, P.E. ADDRESS: 110 AVON STREET CHARLOTTESVILLE, VA 22902 TELEPHONE NO: 434-295-0700 EMAIL ADDRESS: CBOLTON@DAA.COM SOURCE OF SURVEY: DRAPER ADEN ASSOCIATES CONTACT: CHERYL STOCKTO)N ADDRESS: 110 AVON STREET CHARLOTTESVILLE_, V.iN 22902 TELEPHONE NO: 434-295-0700 EMAIL ADDRESS: CSTOCKTON@DAA..COM PROPERTY INFORMATION PARCEL ID: 06000-00-00-024EO A11111111 TOTAL ACRES: ADDRESS: OWNER: ZONING: MAGISTERIAL DISTRICT: HISTORICAL INFORMATION: SITE INFORMATION PRESENT/PROPOSED USE: ADDITIONAL UNITS/BEDS: EXISTING IMPERVIOUS AREA: PROPOSED IMPERVIOUS AREA TOTAL DISTURBED AREA: FLOODPLAIN: BUILDING HEIGHT: 478632910054 58.91 2600 BARRACKS RD, CHARLOTTESVILLE, VA 22901 UNIVERSITY OF VIRGINIA FOUNDATION PLANNED RESIDENTIAL DEVELOPMENT JACK JOUETT NONE ASSISTED LIVING FACILITY NONE 0.21 ACRES 0.29 ACRES 0.87 ACRES N/A ADDITION WILL BE LOWER THAN EX. BUILDING These documents, including drawings and specifications, were prepared by Draper Aden Associates, Consulting Engineers, pursuant to a contract by and between Draper Aden Associates and StudioTwentySeven Architecture with respect to the project described in said contract. Any reuse or modification of said documents (whether hard copy or electronic) without written verification or adaptation by Draper Aden Associates for the specific purpose intended will be at the sole risk of the individual or entity utilizing said documents, drawings and specifications and such use is without the authorization of Draper Aden Associates, Draper Aden Associates, Consulting Engineers, shall have no legal liability resulting from any and all claims, damages, losses, and expenses, including attorney's fees arising out of the unauthorized use of these documents, drawings, specifications, reports, and studies prepared as a result of the aforesaid contract. NOTE: CONTRACTOR TO CONTACT VA811.COM, DIAL "811" OR 1-800-552-7001, AT LEAST 3 WORKING DAYS IN ADVANCE OF PLANNED WORK. ALBEMARLE COUNTY, VIRGINIA VICINITY MAP ALBEMARLE COUNTY, VIRGINIA (GIS) 1 " = 1000' PROJECT DESCRIPTION THE PROJECT PROPOSES TO CONSTRUCT AN APPROXIMATELY 10,000 SQUARE FOOT ADDITION AT THE COLONNADES CONSISTING OF OF DINING AND RECREATIONAL SPACE. SITE WORK WILL INCLUDE NEW STAIRS AND RAMPS AT THE SOUTHWEST AND SOUTHEAST CORNERS OF THE BUILDINGS TO CONNECT WITH THE EXISTING PATHS, ACCESS PATH TO THE SITE DURING CONSTRUCTION, AND THE INSTALLATION OF A STORMWATER MANAMGEMENT FACILITY. Previously Approved Plan THE ORIGINAL DEVELOPMENT OF THE PROPERTY WAS BASED ON PLANS PREPARED BY SECS TITLED 'THE COLANNADES' WITH A 'FINAL SITE PLAN APPROVAL BY ALBEMARLE CO.' REVISION DATED 10/12/1989. ZONING APPROVAL IS BASED ON A JULY 21, 1988 LETTER FROM THE COUNTY (ZMA-88-09) STATING RE—ZONING (R4 TO PRD) IS APPROVED AND LAYS OUT THE REQUIRED PROFFERS. THE ADDITION DETAILED IN THESE 2018 PLANS ARE IN COMPLIANCE WITH ALL PROFFERS ASSOCIATED WITH THE PROPERTY. ORIGINAL DATE OF PLANS SEPTEMBER 21, 2018 DAA PROJECT NO.: 18060111-020301 Civil Sheet List Sheet Sheet Title Number CO.0 COVER SHEET C0.1 GENERAL NOTES AND LEGEND C0.2 ESC & STORMWATER MANGEMENT NARRATIVE C1.0 TOPOGRAPHIC SURVEY C1.1 OVERALL SITE LAYOUT C2.0 DEMOLITION AND EROSION & SEDIMENT CONTROL PLAN C3.0 SITE PLAN C4.0 GRADING AND DRAINAGE PLAN C4.1 STORM SEWER PROFILES C5.0 EROSION & SEDIMENT CONTROL DETAILS C5.1 SITE DETAILS C5.2 BIORETENTION DETAILS County Signature Block The Contractor shall designate an employee certified as the "Responsible Land Disturber" (RLD), by the Commonwealth of Virginia, Department of Environmental Quality (VADEQ), who is in charge of and is responsible for carrying out the land—disturbing activities and inspections on this project. Contractor shall provide written documentation to Albemarle County identifying the RLD prior to land disturbance. In the interim until the work starts, E. Campbell Bolton, P.E., Draper Aden Associates, is the RLD. RESPONSIBLE LAND DISTURBER I, ---------------- identify ----------- Cert. No. as the individual in charge of and responsible for land disturbing activities associated with this erosion and sediment control plan. I agree to notify Albemarle County in writing should I transfer this responsibility to another certified individual before the completion of this project and the release of the erosion and sediment control bond. Signature Date THESE PLANS HAVE BEEN SUBJECTED TO TECHNICAL AND QUALITY REVIEWS BY: NINA R. KEMPIC, E.I.T. 9/2///(9 NAME: PRINTED PROJECT DESIGNER E. CAMPBELL BOLTON, P.E. NAME: PRINTED PROJECT MANAGER CAROLYN A. HOWARD, P.E. NAME: PRINTED QUALITY REVIEWER 19 4ATURE GNATURE 9121118 DATE 912-1118 DATE SUNRISE SEN 10 R LIVING THECOLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL yTH 0 j E. CAM BELL OLTON Lie. No. 051495 Q w 9/ /ZIp �/8 NNIS DRAWING NUMBER C060 SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T(202)939.0027/F(202)939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD Co. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T(434)260-8181 WWW.KEASTHOOD-COM MEP ENGINEER - DRAWING TITLE COVER SHEET DRAWING TYPE CIVIL HIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW-HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM DRAWING SCALE N/A DRAWING DATEjONAL SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 — - -- MINIMUM STANDARDS A VIRGINIA EROSION AND SEDIMENT CONTROL PLAN MUST BE CONSISTENT WITH THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS: MS -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. MS -2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCK PILES 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. MS -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. MS -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. MS -5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MS -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. 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 ACRES. 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 25 -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. MS -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. MS -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. MS -9, WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. MS -10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE 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. MS -11. BEFORE NEWLY CONSTRUCTED STORMWATER 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. MS -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. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. MS -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 NONERODIBLE MATERIAL SHALL BE PROVIDED. MS -14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. MS -15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. MS -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 BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THIS CHAPTER. F. APPLICABLE SAFETY REQUIREMENTS SHALL BE COMPLIED WITH. MS -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. MS -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 VESCP 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. MS -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 STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA. STREAM RESTORATION AND RELOCATION PROJECTS THAT INCORPORATE NATURAL CHANNEL DESIGN CONCEPTS ARE NOT MAN-MADE CHANNELS AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS: A. CONCENTRATED STORMWATER 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 WVHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED. 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 (2) (A) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS. (B) ALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS; AND (C) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM. C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE, THE APPLICANT SHALL: (1) IMPROVE THE CHANNELS TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS AND A TWO-YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL, THE BED, OR THE BANKS; OR (2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN-YEAR STORM IS CONTAINED WITHIN THE APPURTENANCES; (3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWO-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TEN-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR (4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS SATISFACTORY TO THE VESCP AUTHORITY TO PREVENT DOWNSTREAM EROSION. D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS. E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT CONDITION OF THE SUBJECT PROJECT. F. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION, HE SHALL OBTAIN APPROVAL FROM THE VESCP OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE. G. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATORS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL. H. ALL ON-SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE. I. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY. J. IN APPLYING THESE STORMWATER MANAGEMENT CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS. K. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE STATE. L. ANY PLAN APPROVED PRIOR TO JULY 1, 2014, THAT PROVIDES FOR STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS 1F THE PRACTICES ARE DESIGNED TO (1) DETAIN THE WATER QUALITY VOLUME AND TO RELEASE IT OVER 48 HOURS; (11) DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL RESULTING FROM THE ONE YEAR, 24-HOUR STORM; AND (111) REDUCE THE ALLOWABLE PEAK FLOW RATE RESULTING FROM THE 1.5, 2, AND 10 -YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEAK FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK FLOW RATE BY A REDUCTION FACTOR THAT IS EQUAL TO THE RUNOFF VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED CONDITION DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED CONDITION, AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS AS DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO § 62.1-44.15:54 OR 62.1-44.15:65 OF THE ACT. M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS OF § 62.1-44.15:52 A OF THE ACT AND THIS SUBSECTION SHALL BE SATISFIED BY COMPLIANCE WITH WATER QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT (§ 62.1-44.15:24 ET SEQ. OF THE CODE OF VIRGINIA) AND ATTENDANT REGULATIONS, UNLESS SUCH LAND -DISTURBING ACTIVITIES ARE IN ACCORDANCE WITH 9VAC25-870-48 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS. N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 9VAC25-870-66 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM GENERAL NOTES 1. DIMENSIONS AND RADII ARE TO EDGE OF PAVEMENT AND TO OUTSIDE FACE OF BUILDINGS, WHERE APPLICABLE, UNLESS OTHERWISE INDICATED. 2. THE CONTRACTOR SHALL SECURE ALL NECESSARY PERMITS FOR THIS PROJECT FROM THE LOCAL OR STATE AGENCIES AT HIS EXPENSE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ABIDING BY ALL CONDITIONS AND REQUIREMENTS OF THE PERMITS. 3. THE CONTRACTOR IS RESPONSIBLE FOR PROVING A FOUNDATION SURVEY TO ALBEMARLE COUNTY AS REQUIRED. 4. THE CONTRACTOR SHALL NOTIFY ALBEMARLE COUNTY AT LEAST ONE WEEK PRIOR TO STARTING WORK ON THIS PROJECT. 5. THE CONTRACTOR SHALL HAVE A SET OF APPROVED PLANS AVAILABLE AT THE SITE AT ALL TIMES WHEN WORK IS BEING PERFORMED. A DESIGNATED RESPONSIBLE EMPLOYEE SHALL BE AVAILABLE FOR CONTACT BY INSPECTORS. 6. VERIFY THE PROPOSED LAYOUT WITH ITS RELATIONSHIP TO THE EXISTING CONDITIONS IN THE FIELD. ALSO VERIFY ALL DIMENSIONS, SITE CONDITIONS, AND MATERIAL SPECIFICATIONS AND NOTIFY THE ENGINEER OF ANY ERRORS, OMISSIONS, OR DISCREPANCIES BEFORE COMMENCING OR PROCEEDING WITH WORK. 7. DEVIATIONS FROM OR CHANGES TO THESE PLANS WILL NOT BE ALLOWED, UNLESS OTHERWISE APPROVED BY THE ENGINEER. 8. PERFORM ALL WORK USING DIMENSIONS SHOWN ON THESE PLANS. DO NOT USE SCALES, RULERS, DIVIDERS, MAP WHEELS OR OTHER MEASURING DEVICES TO DETERMINE SPATIAL RELATIONSHIPS ON THESE DRAWINGS. 9. ALL TURF AREAS THAT ARE IMPACTED OR DISTURBED BY VEHICLES, EQUIPMENT, OR ACTIVITY SHALL BE REPAIRED, REGRADED, AND RESEEDED TO THE SATISFACTION OF' THE OWNER. 10. REFER TO THE LANDSCAPE PACKAGE FOR ALL PLANTINGS. EXISTING TREES ARE TO REMAIN WHEREVER POSSIBLE. CONTRACTOR SHALL WALK THE SITE WITH THE LANDSCAPE ARCHITECT AND OWNER PRIOR TO CONSTRUCTION TO DETERMINE WHICH TREES WILL BE PROTECTED AND WHICH TREES WILL BE REMOVED. 11. PROPERLY SECURE THE CONSTRUCTION AREA AT ALL TIMES AGAINST UNAUTHORIZED ENTRY AND ADEQUATELY PROTECT EQUIPMENT, MATERIALS, AND COMPLETED WORK FROM THEFT AND VANDALISM. THE OWNER IS NOT RESPONSIBLE FOR THE LOSS OF ANY MATERIAL STORED AT 'THE SITE. ASSUME SOLE AND COMPLETE RESPONSIBILITY FOR JOB SITE CONDITIONS DURING THE COURSE OF CONSTRUCTION OF THIS PROJECT INCLUDING SAFETY OF ALL PERSONS AND PROPERTY. THIS REQUIREMENT SHALL APPLY CONTINUOUSLY AND NOT BE LIMITED TO NORMAL WORKING HOURS. PAVEMENT AND DRAINAGE STANDARD NOTES 1. ALL CONSTRUCTION AND MATERIALS SHALL CONFORM WITH THE STANDARDS AND SPECIFICATIONS OF THE VIRGINIA DEPARTMENT OF TRANSPORTATION'S, LATEST EDITION, EXCEPT WHERE ALBEMARLE COUNTY STANDARDS ARE APPLICABLE. 2. ALL STORM SEWER SHALL BE DUAL WALL HDPE PIPE WITH SMOOTH INTERIOR AND CORRUGATED EXTERIOR WALLS MEETING AASHTO) M252, TYPE S FOR 4" THROUGH 10" AND AASHTO M294, TYPE S FOR 12" THROUGH 60" OR PVC CORRUGATED SEWER PIPE WITH SMOOTH INTERIOR MEETING ASTM F949, EXCEPT AS NOTED. 3. CONCRETE DRAINAGE STRUCTURES MAY BE EITHER PRECAST OR CAST -IN-PLACE. ALL SHALL BE VDOT STANDARD (PER SECTION 1100 OF THE ROAD AND BRIDGE STANDARDS). ALL CONCRETE STRUCTURES SHALL HAVE IS -1 SHAPING IN ACCORDANCE TO VDOT STANDARDS. 4. PVC DRAIN BASINS AND INLINE DRAINS SHALL BE NYLOPLAST OR APPROVED EQUAL. ALL SUMPS SHALL BE FILLED WITH CONCRETE OR PLUGS TO THE INVIERT OUT TO ELIMINATE PONDING WATER. 5. ALL STORM SEWER SHALL HAVE A MINIMUM OF 6" AGGREGATE BEDDING MATERIAL. 6. FOR STORM SEWER LINES WITH OVER 8' OF COVER, REFER TO THE MANUFACTURER'S GUIDELINES FOR PROPER BACKFILL. 7. THE CONTRACTOR IS REQUIRED TO MAINTAIN ALL DITCHES, PIPES, AND OTHER DRAINAGE STRUCTURES FREE FROM OBSTRUCTION UNTIL WORK IS ACCEPTED BY THE OWNER. THE CONTRACTOR IS RESPONSIBLE FOR ANY DAMAGES CAUSED BY FAILURE TO MAINTAIIN DRAINAGE STRUCTURE IN OPERABLE:: CONDITION. 8. THE PAVEMENT DESIGN) IS SUBJECT TO CHANGE DUE TO SOIL CONDITIONS AT THE TIME OF CONSTRUCTION, AS DETERMINED BY THE INSPECTORS FOR THE OWNER OR ALBEMARLE COUNTY. 9. ALL UNSUITABLE MATERIAL SHALL BE REMOVED FROM THE CONSTRUCTION LIMITS OF PAVED AREAS AND DISPOSED OF PROPERLY AT AN APPROVED LOCATION. 10. EXISTING PAVEMENT AIND OTHER SURFACES DISTURBED BY CONTRACTOR (WHICH ARE NOT TO BE REMOVED) SHALL BE REPAIRED TO LIKE -NEW CONDITION. UTILITY NOTES 1. THE LOCATION OF EXISTING UTILITY LINES, CONDUITS OR OTHER STRUCTURES ACROSS, UNDERNEATH, OR OTHERWISE ALONG THE LIINE OF PROPOSED WORK ARE NOT NECESSARILY SHOWN ON THE PLANS, AND IF SHOWN MAY ONLY BE APPROXIMATE. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON THE PLANS IN AREAS OF CONSTRUCTION PRIiOR 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, OR UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLANS TO PERMIT REVISIONS IF NECESSARY. FOR ASSISTANCE IN LOCATING EXISTING UTILITIES CALL "MISS UTILITY", 811. 2. TAKE PRECAUTIONARY MEASURES TO PROTECT THE UTILITIES SHOWN HEREON AND ANY OTHER EXISTING UTILITIES NOT SHOWN ON THESE PLANS. IF A UTILITY IS DAMAGED DURING CONSTRUCTION, STOP WORK IMMEDIATELY AND NOTIFY THE ENGINEER. DAMAGE TO UTILITIES (INCLUDING UNDERGROUND) OR PROPERTY OF OTHERS BY CONTRACTOR DURING CONSTRUCTION SHALL BE REPAIRED TO PRE -CONSTRUCTION CONDITIONS BY CONTRACTOR AT NO COST TO OWNER. 3. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 4. THE CONTRACTOR SHALL COORDINATE WITH THE UTILITY COMPANIES AND THE MEP ENGINEERS ON THE REQUIREMENTS FOR AND LIMITS OF ANY UTILITIES NOT DETAILED ON THE CIVIL PLANS. GENERAL EROSION AND SEDIMENT 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 SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH) AND VIRGINIA REGULATIONS 9VAC2-840 EROSION AND SEDIMENT CONTROL REGULATIONS. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. ES -2 ALBEMARLE COUNITY 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. ES -3 ALL EROSION ANID SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING, GRADING OR LANID-DISTURBING AND SEQUENCE OF CONSTRUCTION APPROVED. 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 LAND [DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS OR OFF-SITE FILL ACTIVITIES, THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND FOR APPROVAL BY ALBEMARLE COUNTY. ES -6 THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSIOINI AND SEDIMENTATION AS DETERMINED BY ALBEMARLE COUNTY. ES -7 SITE GRADING IS TO DRAIN TO THE PERIMETER CONTROLS AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING CONSTRUICTION, UNTIL FINAL STABILIZATION IS ACHIEVED. ES -8 DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES -9 THE CONTRACTORS SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY (AT LEAST DAILY) AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTRO)L DEVICES SHALL BE MADE IMMEDIATELY. ALBEMARLE COUNTY PLAN GENERAL NOTES GENERAL CONSTRUCTION NOTES 1. 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 REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2.ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. 3.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. 4.ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. 5.THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6.PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7.ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. &UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS 111. 9.ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 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. &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 LIMIITED TO THE HOURS OF 7:OOAM 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 0 SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL 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 LBS/ACRE, 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 80LBS/1000SF. 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 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% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYIEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/1000SF. 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 1S TO BE 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) GENERAL LEG EN D PROPOSED Limits of Disturbance 5' Contour 540 1' Contour 542 Storm Sewer Pipe yTH 0 E. CAM BELL OLTONyco Lie, No. 051495 G� ��JJ p 1RQ P` �� //G (// / �✓ jONAL Storm Structure SUNRISE SENIOR LIVING 7902 W ESTPARK DRIVE W(W W). UNRISEESOENIORLIVING.COM PROJECT MANAGER Concrete KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) WWW.KEASTHOOD.COM MEP ENGINEER Bioretention Building ....... `VJMt-) MLUULA I IUIVJ .)rlHLL OL uCC1VIGV SUNRISE SENIOR LIVING THE L C LJ �O N N®j-S EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 1 U OM I IOF 1 I" F_ vmG.WuII\LIVILIv CLIENT CL - 1,-) Ur aUuul v1a1U1v 1z) U1 11 Iia .7vu.7LL ARCHITECT - 11Uiv. STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL yTH 0 E. CAM BELL OLTONyco Lie, No. 051495 G� ��JJ p 1RQ P` �� //G (// / �✓ jONAL DRAWING NUMBER • SUNRISE SENIOR LIVING 7902 W ESTPARK DRIVE W(W W). UNRISEESOENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 006 T (202) 939.002 / F (2002) 939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) WWW.KEASTHOOD.COM MEP ENGINEER -dj DRAWING TITLE GENERAL NOTES AND LEGEND DRAWING TYPE CIVIL _ HIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM DRAWING SCALE N/A DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - O1 PART 1: EROSION & SEDIMENT CONTROL NARRATIVE A. PROJECT DESCRIPTION THIS PROJECT PROPOSES AN ADDITION TO SENIOR SUNRISE LIVING'S THE COLONNADES COMMUNITY IN ALBEMARLE COUNTY, VIRGINIA. THE ADDITION WILL CONSIST OF ADDITIONAL RECREATIONAL AND DINING AMENITIES; NO NEW LIVING FACILITIES OR BEDS WILL BE ADDED. SITEWORK WILL CONSIST OF THE REMOVAL OF EXISTING HARDSCAPE AND THE CONSTRUCTION OF SIDEWALKS, STAIRS, A RAMP, A BIORETENTION BASIN, AND LANDSCAPING. LIMITED GRADING AND EARTHWORK IS ANTICIPATED. THE PROJECT WILL HAVE A TOTAL DISTURBED AREA OF APPROXIMATELY 0.87 ACRES. WITHIN THE LIMITS OF THE DISTURBANCE, THERE ARE 0.66 ACRES OF MANAGED TURF AND 0.21 ACRES OF IMPERVIOUS AREA IN THE CURRENT CONDITIONS. THE TOTAL PROPOSED POST -DEVELOPMENT WILL CONSIST OF 0.58 ACRES OF MANAGED TURF AND 0.29 ACRES OF IMPERVIOUS AREA. THE PROJECT IS ANTICIPATED TO BEGIN IN SPRING OF 2019 AND BE COMPLETED 1N IN APPROXIMATELY ONE YEAR. THE PROJECT WILL REQUIRE A VIRGINIA STORMWATER MANAGEMENT PROGRAM CONSTRUCTION GENERAL PERMIT THOUGH ALBEMARLE COUNTY. B. EXISTING SITE CONDITIONS THE COLONNADES IS A SUNRISE SENIOR LIVING COMMUNITY IN ALBEMARLE COUNTY, VIRGINIA. THE FACILITY SITS ON APPROXIMATELY 59 ACRES ALONG BARRACKS ROAD, JUST OUTSIDE THE CITY OF CHARLOTTESVILLE LIMITS. THE OVERALL FOOTPRINT OF THE EXISTING BUILDINGS AND PARKING LOTS IS APPROXIMATELY 16 ACRES. THE DEVELOPMENT CONSISTS OF INDEPENDENT LIVING APARTMENTS AND COTTAGES, ASSISTED LIVING AREAS, SKILLED NURSING AND REHABILITATIVE CARE, A MEMORY CARE UNIT, AND AMENITIES INCLUDING A RESTAURANT STYLE DINING ROOM, FITNESS CENTER, INDOOR POOL AND SPA, MEDICAL CLINIC, LIBRARY AND ASSEMBLY ROOMS. THE PROPOSED ADDITION IS LOCATED ON THE SOUTH SIDE OF THE COMMUNITY CENTER WITHIN THE FOOTPRINT OF OUTDOOR PLAZA, WHICH IS BETWEEN THE DINING ROOM AND INDOOR POOL. THE PLAZA IS A CONCRETE PATIO LINED WITH BRICK PAVERS, LANDSCAPE BEDS, AND COLUMNS WITH AN ARCHED TRELLIS. THE AREA IS GENERALLY FLAT, SLOPING TO A STORM INLET IN THE MIDDLE OF THE PLAZA. THE SOUTH END OF THE PLAZA IS A RETAINING WALL, WHICH DROPS OFF APPROXIMATELY THREE- TO FIVE -FEET TO THE LANDSCAPED BEDS BELOW. LANDSCAPE AREAS AND LAWNS CONTINUE TO THE SOUTH WITH CONCRETE AND ASPHALT WALKS. THIS AREA SLOPES GENTLY TO THE SOUTH FOR APPROXIMATELY 25- TH 50 -FEET, WHERE A STEEP BANK LEADS DOWN TO THE WOODS AND AN EXISTING STORMWATER MANAGEMENT DETENTION BASIN. IN GENERAL, RUNOFF WITHIN THE LIMITS OF CONSTRUCTION FLOWS FROM NORTH TO SOUTH. AN EXISTING STORM SEWER SYSTEM RUNS NORTH TO SOUTH, ALONG THE EAST SIDE OF THE ADDITION. THIS SYSTEM IS PART OF A LARGER EXISTING STORM SEWER SYSTEM THAT CONVEYS THE MAJORITY OF THE RUNOFF FROM THE PROPERTY INTO A STORMWATER DETENTION BASIN CONSTRUCTED IN THE 1980'S. ALL RUNOFF FROM THE LIMITS OF DISTURBANCE WILL FLOW INTO THE BASIN, WHICH IS LOCATED APPROXIMATELY 300 LINEAR FEET DOWNSTREAM OF THE PROJECT. THE BASIN DISCHARGES DIRECTLY INTO A TRIBUTARY TO MEADOW CREEK. C. ADJACENT PROPERTY THE COLONNADES RETIREMENT COMMUNITY IS LOCATED IN THE ALBEMARLE COUNTY ON BARRACKS ROAD, WEST OF THE INTERSECTION OF GEORGETOWN ROAD. COLONNADE HILL DRIVE GOES THROUGH THE COMMUNITY AND IS CONNECTED TO BARRACKS ROAD. BORDERING THE PROPERTY TO THE WEST AND SOUTH IS A FORESTED AREA AND TO THE NORTH AND EAST ARE RESIDENTIAL AREAS. THE COLONNADES CONSISTS OF SEVERAL RESIDENTIAL UNITS THAT SURROUND THE MAIN BUILDING, WHERE THE PROJECT IS LOCATED. EXISTING BUILDINGS TO THE NORTH, EAST, AND WEST SURROUND THE PROJECT SITE AND A LAWN AREA IS LOCATED TO THE SOUTH. NO DISTURBANCE OUTSIDE THE LIMITS SHOWN ON THE PLANS IS ANTICIPATED. WITH PROPER SEDIMENT CONTROL IN PLACE TO CONTAIN SEDIMENT BEFORE ENTERING THE EXISTING STORM SYSTEM, NO ADVERSE EFFECTS RESULTING FROM SEDIMENT DEPOSITION IS ANTICIPATED FOR ANY OF THE ADJACENT OR DOWNSTREAM AREAS. D. PLANNED OFF SITE ACTIVITIES NO OFF-SITE CUT OR FILL LOCATIONS OR OTHER TYPES OF DISTURBANCE ARE ANTICIPATED, AS THERE WILL BE LIMITED EARTHWORK ASSOCIATED WITH THE PROJECT. SHOULD ADDITIONAL OFF-SITE AREAS BE REQUIRED, A SITE PLAN AND EROSION AND SEDIMENT CONTROL PLAN FOR THAT AREA WILL NEED TO BE PREPARED AS AN INDEPENDENT PROJECT FROM THIS PROJECT. THE CONTRACTOR SHALL BE RESPONSIBLE FOR IMPLEMENTING THE APPROVED EROSION AND SEDIMENT CONTROL PLAN ALONG WITH FINAL STABILIZATION AND MAINTENANCE OF ALL OFF-SITE AREAS. E. SOILS A NATURAL RESOURCE CONSERVATION SERVICE (MRCS) CUSTOM SOIL RESOURCE REPORT FOR ALBEMARLE COUNTY, VIRGINIA DATED JULY 2, 2018 SHOWS THE MAJORITY OF SOILS ON THE SITE ARE CLASSIFIED AS CULPEPPER FINE SANDY LOAM (HYDROLOGIC SOIL GROUP B) AND ALBEMARLE FINE SANDY LOAM (HYDROLOGIC SOIL GROUP C). A SMALL PORTION OF THE LIMITS IS CLASSIFIED AS ALBEMARLE VERY STONY FINE SANDY LOAM (HYDROLOGIC SOIL GROUP C). FOR THE FULL REPORT, REFER TO APPENDIX B-1. FOR CALCULATION PURPOSES, THE SITE WAS ASSUMED TO BE ALL HYDROLOGIC SOIL GROUP C. A GEOTECHNICAL REPORT TITLED, "SUBSURFACE EXPLORATION AND GEOTECHNICAL EVALUATION - THE COLONNADES ADDITION" AND DATED AUGUST 24, 2018 WAS COMPLETED BE DRAPER ADEN ASSOCIATES. THIS REPORT WILL BE AVAILABLE TO THE CONTRACTOR TO ASSIST WITH DESIGN AND EARTHWORK RECOMMENDATIONS. F. CRITICAL EROSION AREAS STEEP SLOPES EXIST ALONG THE SOUTH PERIMETER OF THE PROJECT AREA, WHICH CAN BECOME CRITICAL IF NOT MANAGED CORRECTLY. PERIMETER CONTROL MEASURES SHALL BE WELL SECURED AND CHECKED FREQUENTLY TO ENSURE THEY ARE IN GOOD CONDITION. DISTURBED STEEP SLOPES SHALL BE STABILIZED PROPERLY AS TO LIMIT EROSION. REGULAR INSPECTIONS SHALL BE CONDUCTED ACROSS THE ENTIRE SITE TO ENSURE SLOPES DO NOT BECOME EROSIVE AS CONSTRUCTION PROGRESSES. IN GENERAL, THE CONTRACTOR SHALL MINIMIZE THE: AREAS DISTURBED AT ONE TIME AND SHALL IMMEDIATELY APPLY SEED AND MULCH TO DENUDED AREAS AFTER WORK IS PERFORMED. G. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO THE LATEST STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. UNLESS WAIVED OR APPROVED BY LOCAL ADMINISTRATOR, THE MINIMUM STANDARDS OF VESCR SHALL APPLY. H. STRUCTURAL PRACTICES 1. SAFETY FENCE - 3.01 TO BE INSTALL AROUND THE SITE AS NEEDED TO PROTECT THE PUBLIC FROM THE CONSTRUCTION SITE AND TO SECURE ITEMS KEPT ON SITE. EXACT LIMITS TO BE DETERMINED BY THE CONTRACTOR AND OWNER IN THE FIELD BASED ON PHASING. 2. TEMPORARY CONSTRUCTION ENTRANCE - 3.02 A STONE OR ASPHALT PAD, LOCATED AT THE POINT OF VEHICULAR INGRESS AND EGRESS TO THE CONSTRUCTION SITE. FOR THIS SITE, THE EXISTING PAVED DRIVE AISLE WILL BE USED AS THE CONSTRUCTION ENTRANCE. THE PURPOSE IS TO PREVENT OR REDUCE THE AMOUNT OF MUD TRANSPORTED TO THE PUBLIC ROAD. SEDIMENT DISLODGED OR WASHED FROM THE VEHICLE SHALL BE DIRECTED TO A PROPER SEDIMENT TRAPPING AREA, 3. CONSTRUCTION ROAD STABILIZATION - 3.03 TEMPORARY STABILIZATION OF ACCESS ROADS WITH STONE TO REDUCE EROSION AND LIMIT SEDIMENT TRACKED OFF-SITE. 4. SILT FENCING - 3.05 SILT FENCE SEDIMENT BARRIERS WILL BE INSTALLED DOWN SLOPE OF DISTURBED AREAS TO FILTER SEDIMENT LADEN RUNOFF. 5, STORM DRAIN INLET PROTECTION - 3.07 TO BE INSTALLED ON EXISTING INLETS PRIOR TO CONSTRUCTION AND ALL PROPOSED INLETS AS THEY ARE INSTALLED TO FILTER SEDIMENT LADEN RUNOFF BEFORE ENTERING STORM DRAIN INLETS AND PIPING SYSTEMS.. 6. TREE PROTECTION - 3.38 A TEMPORARY FENCE TO BE INSTALLED AROUND TREES OR VEGETATION TO REMAIN TO PREVENT DAMAGE DURING CONSTRUCTION. THE FENCING SHALL BE INSTALLED ALONG THE DRIP LINE OF THE TREE WHERE POSSIBLE. NO CONSTRUCTION TRAFFIC OR STORAGE OF MATERIALS IS ALLOWED WITHIN THE FENCING. 7, DUST CONTROL - 3.39 DUST CONTROL MEASURES WILL BE USED OVER THE WHOLE SITE TO REDUCE SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBANCE, DEMOLITION, AND CONSTRUCTION ACTIVITIES. 1. VEGETATIVE PRACTICES GENERAL: A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED BY CONCRETE, PAVEMENT OR LANDSCAPED MULCHED BEDS. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. NEW VEGETATION SHALL BE MAINTAINED FOR ONE FULL YEAR AFTER PLANTING. NEW SEEDING SHALL BE SUPPLIED WITH ADEQUATE MOISTURE, ESPECIALLY LATE IN THE SEASON, AND IN ABNORMALLY HOT OR DRY WEATHER. STABILIZATION PRACTICES SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THE APPROPRIATE VESCH STD. & SPEC. AND AS PER THE EROSION AND SEDIMENT CONTROL PLAN. SELECTION OF THE APPROPRIATE SEED MIXTURE FOR TEMPORARY SEEDING WILL DEPEND UPON THE TIME OF YEAR IT IS APPI IFD 1. TOPSOILING - 3.30 A 4" LAYER OF TOPSOIL SHALL BE APPLIED TO ALL LANDSCAPED AND GRASSED AREAS. THE TOPSOIL SHALL BE FREE OF ROCKS AND DEBRIS. TOPSOIL ALLOWS A STRONGER AND HEALTHIER STAND OF GRASS TO ESTABLISH QUICKLY TO STABILIZE UNPAVED AREAS OF THE SITE. 2. TEMPORARY SEEDING - 3.31 TEMPORARY SEEDING SHALL BE APPLIED OVER DENUDED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 14 DAYS. TEMPORARY SEEDING MIXES SHALL BE AS DESCRIBED IN VESCH STD. & SPEC, 3.31, 3. PERMANENT SEEDING - 3.32 PERMANENT SEEDING SHALL BE APPLIED WITHIN 7 DAYS TO ALL AREAS AT FINAL GRADE THAT WILL NOT RECEIVE HARDSCAPE OR OTHER LANDSCAPE. PERMANENT SEEDING SHALL ALSO BE USED ON ALL AREAS THAT ARE NOT AT FINAL GRADE AND THAT WILL BE LEFT DORMANT FOR A PERIOD OF MORE THAN 1 YEAR. IF CONFLICTS EXIST BETWEEN THE PROJECT SPECIFICATIONS AND THE VESCH STD. & SPEC. 3.32, THE MORE STRINGENT REQUIREMENT SHALL APPLY. PERMANENT SEEDING MIXES AND RATES ARE FOUND IN VESCH STD. & SPEC. 3.32. 4. MULCHING - 3.35 APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE TO PREVENT EROSION BY PROTECTING THE SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING THE VELOCITY OF OVERLAND FLOW. IT IS ALSO USED TO FOSTER THE GROWTH OF VEGETATION BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT AND COLD. MULCHING SHALL BE APPLIED THROUGHOUT CONSTRUCTION ON DENUDED AREAS. 5. SOIL STABILIZATION BLANKETS & MATTING - 3.36 BIODEGRADABLE MATTING INSTALLED OVER STEEP SLOPES TO HOLD THE EARTH AND SEED IN PLACE WHILE A GOOD STAND OF VEGETATION IS ESTABLISHED, PERMANENT MATTING SHALL BE INSTALLED IN AREAS WITH ANTICIPATED HIGH FLOW VELOCITIES UNDER FINAL PROJECT CONDITIONS. J. PERMANENT STABILIZATION ALL AREAS WITHIN THE LIMITS OF DISTURBANCE AND OUTSIDE THE BUILDING FOOTPRINT SHALL BE STABILIZED WITH PERMANENT SEEDING, HARDWOOD MULCH, OR PAVEMENT FOLLOWING FINAL GRADING. K. CONSTRUCTION SCHEDULE 1. A PRE -CONSTRUCTION CONFERENCE WILL BE REQUIRED. CONTACT ALBEMARLE COUNTY TO SET UP THE MEETING AT LEAST ONE WEEK PRIOR TO STARTING CONSTRUCTION. 2. THE CONTRACTOR IS RESPONSIBLE FOR ENSURING ALL. APPLICABLE PERMITS ARE IN PLACE PRIOR TO STARTING CONSTRUCTION, 3. ALL ITEMS OF WORK NECESSARY TO COMPLETE THIS PROJECT SHALL BE IN COMPLIANCE WITH ALL LOCAL, STATE, AND FEDERAL CODES. 4. PRIOR TO ANY LAND DISTURBING ACTIVITY, CONTRACTOR SHALL PROVIDE THE NAME, CERTIFICATION INFORMATION, AND CONTACT INFORMATION OF THE DESIGNATED RESPONSIBLE LAND DISTURBER (RLD) TO ALBEMARLE COUNTY. 5. PHASE 1 - INITIAL E&S MEASURES - PRIOR TO STARTING CONSTRUCTION OR EARTHWORK ACTIVITIES, INITIAL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSTALLED AND MADE OPERATIONAL AS SHOWN ON THE PLANS. A. INSTALL CONSTRUCTION ROAD STABILIZATION AS SHOWN ON THE PLAN. DISTURB THE MINIMUM AREA NEEDED TO INSTALL THE ROAD. B. INSTALL PERIMETER CONTROL MEASURES INCLUDING SILT FENCE, INLET PROTECTION, AND TREE PROTECTION. C. REMOVE PAVEMENT, LANDSCAPE, AND OTHER SITE FEATURES AS SHOWN ON THE PLANS. MINIMIZE DENUDED AREAS EXPOSED AT ONE TIME, D. THROUGHOUT CONSTRUCTION ACTIVITIES, APPLY DUST CONTROL MEASURES ACCORDING TO VESCH STD. & SPEC. 3.39. ANY AND ALL MATERIAL OR DEBRIS TRACKED ONTO A PUBLIC OR PRIVATE ROAD SURFACE WILL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT' SHALL BE REMOVED FROM ROADS BY SHOVELING OR SWEEPING AND BE TRANSPORTED TO A SEDIMENT CONTROLLED) DISPOSAL AREA. E. APPLY TEMPORARY SEEDING AND MULCHING AS NECESSARY. 6. PHASE 2 - EARTHWORK, BUILDING CONSTRUCTION, AND FINAL STABILIZATION A. MAINTAIN ALL PERIMETER EROSION AND SEDIMENT CONTROL MEASURES. EROSION AND SEDIMENTATION CONTROLS SHALL BE MAINTAINED UNTIL SUCH A TIME AS A VEGETATIVE COVER IS ESTABLISHED OR HARDSCAPE IS INSTALLED ON ALL AREAS UPHILL OF THE MEASURES. B. BEGIN GRADING ACTIVITIES. TOPSOIL SHOULD BE STOCKPILED AND SAVED FOR USE DURING FINAL SITE GRADING. ALL STOCKPILES SHALL BE SURROUNDED BY SILT FENCE AND SEEDED IN COMPLIANCE WITH MS -19. C. INSTALL ALL ADDITIONAL MEASURES SHOWN ON THE: PLANS AND AS DEEMED NECESSARY THROUGH INSPECTIONS BY THE RLD, ALBEMARLE COUNTY, OR ENGINEER. D. BEGIN UTILITY STORM SEWER INSTALLATION. PILE MATERIAL ON UPHILL SIDE OF TRENCHES. E. INSTALL INLET PROTECTION ON ALL INLETS AS THEY ARE INSTALLED AND BECOME OPERATIONAL. F. USE APPROPRIATE DUST CONTROL MEASURES FOR DISTURBED AREAS AS WELL AS TEMPORARY SEEDING AND STRAW MULCHING AS NECESSARY. G. PROCEED WITH HARDSCAPES INSTALLATION. H. APPLY PERMANENT SEEDING, TOPSOIL AND STRAW MULCHING TO ALL DISTURBED AREA OUTSIDE OF THE LANDSCAPED AREAS RECEIVING HARDWOOD MULCH. (INSTALL TEMPORARY BLANKET MATTING ON ALL DISTURBED SLOPES 4:1. 7. PHASE 3 - CONSTRUCTION OF BIORETENTION A. ONCE UPSTREAM AREAS HAVE BEEN STABILIZED, BEGIN BIORETENTION CONSTRUCTION. DOWNSTREAM EROSION AND SEDIMENT CONTROL MEASURE SHALL REMAIN IN PLAICE. B. INSTALL TEMPORARY BYPASS PIPES AROUND BIORETIENTION TO DIVERT RUNOFF AROUND FACILITIES DURING INSTALLATION. C. BEGIN CONSTRUCTION ON THE PROPOSED STORMWATER MANAGEMENT FACILITY, D. DOCUMENT AND SURVEY MEASURES AS THEY ARE CONSTRUCTED IN ACCORDANCE WITH THE VIRGINIA STORMWATER MANAGEMENT REGULATIONS. E. FINALIZE CONSTRUCTION AND INSTALL LANDSCAPING IN BIORETENTION. F. AFTER THE FACILITIES HAVE REACHED FINAL STABILIZATION AND THE INSPECTOR APPROVES THE SITE, THE STORMWATER FACILITIES MAY BE BROUGHT ONLINE. -THE FACILITIES SHOULD NOT RECEIVE RUNOFF BEFORE THIS POINT. G. APPLY PERMANENT SEEDING AND MULCHING TO ALL REMAINING DISTURBED AREAS. H. ALL STORMWATER PIPES AND STRUCTURES SHALL BE CLEANED OF ALL SEDIMENT BUILD UP. 8. ONCE THE SITE WORK IS COMPLETELY FINALIZED AND FALL STABILIZATION MEASURES ARE IN PLACE, NOTIFY THE INSPECTORS FOR A FINAL INSPECTION. 9. ONCE APPROVAL IS ACQUIRED FROM THE INSPECTOR RIND ALL UPSTREAM AREAS HAVE ESTABLISHED VEGETATION, ALL REMAINING EROSION AND SEDIMENT CONTROL MEASURE'S SHALL BE REMOVED WITHIN 30 DAYS. 10. REMOVE ALL EQUIPMENT, CONSTRUCTION MATERIALS AMD DEBRIS FROM THE SITE. L. MAINTENANCE PRIOR TO ANY LAND DISTURBING ACTIVITY, CONTRACTOR SHALL PROVIDE THE NAME, CERTIFICATION INFORMATION, AND CONTACT INFORMATION OF THE DESIGNATED RESPONSIBLE LAND DISTURBER (RLD) TO THE APPROPRIATE AUTHORITIES. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED PER THE CONSTRUCTION GENERAL PERMIT. DURING CONSTRUCTION, THE CONTRACTOR'S DESIGNATED RLD WILL BE RESPONSIBLE FOR INSPECTING AND REPAIRING DAMAGED EROSION/SEDIMENT CONTROL MEASURES. THE FOLLOWING ITEMS WILL BE CHECKED IN PARTICULAR: 1. THE STONE CONSTRUCTION ROAD SHALL BE MAINTAINED IN A CONDITION, WHICH WILL PREVENT TRACKING OR FLOW OF MUD OFF OF THE SITE. THE STONE MAY NEED TO BE WASHED AND REWORKED OR ADDITIONAL STONE ADDED TO ENSURE THE ENTRANCE IS PROPERLY FUNCTIONING. 2. THE SILT FENCE AND INLET PROTECTION BARRIERS SHAkLL BE CHECKED FOR UNDERMINING AND DETERIORATION OF OR DAMAGE TO THE FABRIC. DAMAGES SHALL BE IMMEDIATTELY REPAIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES ONE HALF THE HEIC3HT OF THE BARRIER. 3. ALL SEDIMENT REMOVED FROM TRAPPING MEASURES SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE OR CAUSE SEDIMENTATION PROBLEMS. 4. THE SEEDED AND MULCHED AREAS SHALL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. REFER TO ESC TECHNICAL BULLETIN #4. PROVIDE REMEDIAL STABILIZATION AND SEEDING FOR A PERIOD OF ONE YEAR AFTER CONSTRUCTION. SUNRISE SENIOR LIVING THE �� D �� CLIENT ARCHITECT STRUCTURAL ENGINEER SUNRISE SENIOR LIVING 7902 STUDIOTWENTYSEVENARCHITECTURE KEAST & HOOD CO. THESE AREAS. HOWEVER, THE FLOW 'TO WAS INCREASED, WESTPARK DRIVE T (703) 273.7500 1600 K STREET NW, SUITE 800 113 4TH STREET NE, SUITE 100 EXPANSION PROJECT WW W.SUNRISESENIORLIVING.COM WASHINGTON, DC 20006 T (202) 939.0027 / F (202) 939.0270 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 ADEQUATE CAPACITY, WITHOUT ACCOUNTING FOR ANY DETENTION, AND ALL HYDRAULIC WWW.STUD1027ARCH.COM WWW.KEASTHOOD.COM DRAWING N/A PROJECT MANAGER CIVIL ENGINEER MEP ENGINEER HIMES ASSOCIATES, LTD DRAPER ADEN ASSOCIATES INTERFACE ENGINEERING 2600 BARRACKS ROW 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 110 AVON STREET CHARLOTTESVILLE, VA 22902 2000 M STREET NW, SUITE 270 CHARLOTTESVILLE, VA 22901 WWW.HIMESASSOCIATES.COM T (434) 295-0700 WASHINGTON, DC 20036 T (202) 370.9555 WWW.DAA.COM WWW. INTER FACEENGINEER ING.COM NOT FOR CONSTRUCTION PART 2: STORMWATER MANAGEMENT REPORT A. STORMWATER MANAGEMENT OVERVIEW THE PROJECT WILL HAVE A TOTAL DISTURBED AREA OF APPROXIMATELY 0.87 ACRES. WITHIN THE LIMITS OF THE DISTURBANCE, THERE ARE 0.66 ACRES OF MANAGED TURF AND 0.21 ACRES OF IMPERVIOUS AREA IN THE CURRENT CONDITIONS. THE TOTAL PROPOSED POST -DEVELOPMENT WILL CONSIST OF 0.58 ACRES OF MANAGED TURF AND 0.29 ACRES OF IMPERVIOUS AREA. RUNOFF FROM THE SITE GENERALLY FLOWS FROM NORTH TO SOUTH, IS COLLECTED BY A STORM SEWER SYSTEM, AND DISCHARGES INTO AN EXISTING ONSITE STORMWATER MANAGEMENT BASIN CONSTRUCTED IN THE LATE 1980'S. ALL RUNOFF FROM THE LIMITS OF DISTURBANCE WILL FLOW INTO THE BASIN, WHICH IS LOCATED APPROXIMATELY 300 LINEAR FEET DOWNSTREAM OF THE PROJECT. BASED ON CONVERSATIONS WITH THE PROPERTY MANAGER, THE BASIN HAS OVERTOPPED DURING LARGE RAINFALL EVENTS IN THE PAST. IT DISCHARGES INTO A RISER AND OUTLET PIPE DIRECTLY INTO A TRIBUTARY TO MEADOW CREEK. AT THIS POINT, THE OVERALL DRAINAGE AREA TO THE TRIBUTARY IS APPROXIMATELY 113 ACRES. THE OVERALL PROPERTY IS DIVIDED INTO FOUR DRAINAGE AREAS FOR ANALYSIS. THE FOUR AREAS ARE TRIBUTARY TO THE EXISTING STORMWATER BASIN; THREE THROUGH A PIPED SYSTEM AND ONE VIA SHEET FLOW. THE PROJECT AREA IS AT THE INTERSECTION OF THREE OF THESE AREAS, AND SLIGHTLY ALTERS THE DRAINAGE PATTERNS TO THE DIFFERENT PIECES OF THE SYSTEM. DRAINAGE AREA 'SOUTH' IS THE AREA TO THE SOUTHEAST OF THE MAIN BUILDING JUST UPSTREAM OF THE BASIN THAT FLOWS DIRECTLY INTO IT. DRAINAGE AREA 'WEST', 'CENTER', AND 'EAST' ARE ALL PIPED CONVEYANCE SYSTEMS, WHICH DISCHARGE INTO THE BASIN. 'CENTER' AND 'EAST' COMBINE AT STORM STRUCTURE DP2197 PRIOR TO DISCHARGING INTO THE BASIN, WHILE 'WEST ENTERS THE BASIN AT A DIFFERENT LOCATION, THE POST -DEVELOPED CONDITION WILL REDUCE THE AREA WITHIN 'WEST' AND 'SOUTH', WHILE INCREASING THE AREA WITHIN 'CENTER'. NOTE: THE LIMITS OF DISTURBANCE DOES NOT INCLUDE ANY AREA IN THE 'WEST' DRAINAGE AREA, BUT THE ADDITION WILL ALTER THE EXISTING ROOF DRAINAGE PATTERNS AND DIRECT ADDITIONAL ROOF AREA INTO THE 'CENTER' DRAINAGE AREA. THE 'EAST' AREA IS UNCHANGED. OVERALL STORMWATER CALCULATION INFORMATION DRAINAGE AREA FLOW RATE AND ROUTING CALCULATIONS FOR THE DETENTION SYSTEM WERE PERFORMED IN THE 'HYDRAFLOW HYDROGRAPHS' PROGRAM USING THE SCS METHOD. THE SOILS ONSITE WERE CLASSIFIED AS HYDROLOGIC GROUP B AND C BASED ON THE NRCS SOIL REPORT. BASED ON THE ADDITIONAL INFORMATION OBTAINED IN THE GEOTECHNICAL REPORT, IT APPEARS ALL SOILS ONSITE ARE CONSISTENT, AND WOULD APPEAR TO BE BETTER DEFINED AS GROUP C. THEREFORE, HYDROLOGIC SOIL GROUP C WAS USED FOR THE ENTIRE PROJECT AREA, CURVE NUMBERS (CN) WERE BASED ON 98 FOR IMPERVIOUS AREAS AND 74 FOIR PERVIOUS AREAS. REFER TO APPENDIX B-1 FOR ROUTING CALCULATIONS. THE RATIONAL METHOD WAS USED TO SIZE THE STORM SEWER PIPES. RATIONAL C VALUES WERE BASED ON 0.90 FOR IMPERVIOUS AREAS AND 0.30 FOR MANAGED TURF AREAS. REFER TO APPENDIX B-2 FOR STORM SEWER CALCULATIONS. TIME OF CONCENTRATIONS WERE DEITERMINED BASED ON THE TR -55 METHOD. DRAINAGE AREAS WHERE THE SIZE AND SLOPES RESULTED IN A TIME OF CONCENTRATIONS BELOW FIVE MINUTES WERE DEFAULTED TO A MINIMUM VALUE OF FIVE MINUTES. TIME OF CONCENTRATION FLOW PATHS USE MANNING'S N -VALUE OF 0.24 FOR GRASSED AREAS, 0.030 FOR NATURAL CHANNELS, 0.013 FOR CONCRETE PIPES AND 0.012 FOR PLASTIC PIPE. RAINFALL VALUES USED IN THE CALCULATIONS WERE BASED ON THE "NOAA ATLAS 14 POINT PRECIPITATION FREQUENCY ESTIMATES" FROM THE NOAA WEBSITE FOR ALBEMARLE COUNTY, WIRGINIA. REFER TO APPENDIX D. B. CHANNEL PROTECTION ANALYSIS THE VIRGINIA STORMWATER MANAGEWENT PROGRAM (VSMP) REGULATIONS FOR CONCENTRATED STORMWATER FLOW INTO A MANMADE CONVEYANCE SYSTEM (9VAC25-870-66 BA.A) STATES, THE MANMADE STORMWATER CONVEYANCE SYSTEM SHALL CONVEY THE POST DEVELOPMENT PEAK FLOW RATE FROM THE TWO-YEAR 24-HOUR STORM EWENT WITHOUT CAUSING EROSION OF THE SYSTEM. THE REGULATIONS (9VAC25-870-66 B.4) STATES, THE LIMITS OF THIS ANALYSIS ARE EITHER TO A POINT WHERE THE ENERGY BALANCE EQUATION IS SATISFIED OR WHERE BASED ON LAND AREA, THE SITE'S CONTRIBUTING DRAINAGE AREA IS LESS THAN OR EQUAL TO ONE PERCENT OF THE TOTAL WATERSHED AREA. ALL CONCENTRATED RUNOFF FROM THE SITE AREA IS CONVEYED VIA THE 'CENTER' STORM SEWER PIPE SYSTEM BEFORE DISCHARGING INTO THE EXISTING STORMWATER MANAGEMENT BASIN. THE REMAINING PROJECT AREA IS NOT CONCENTRATED, BUT FLOWS INTO THE SAME BASIN. THE PIPE SYSTEM AND STORMWATER DETENTION BASIN ARE BOTH MANMADE. THEREFORE, THE REGULATIONS INDICATE THEY ARE TO BE ANALYZED FOR EROSIVE POTENTIAL. THE PIPE SYSTEM IS RCP, WHICH IS NON-EROSIVE. THE BASIN WILL HAVE PONDED WATER DURING STORM EVENTS AND HAS A GOOD STAND OF VEGETATION, SO THIS AREA ALSO HAS VERY LOW POTENTIAL TO BECOME EROSIVE. THE OUTFALL FROM THE BASIN DISCHARGES DIRECTLY INTO THE TRIBUTARY TO MEADOW CREEK. THE TOTAL DRAINAGE AREA AT THIS POINT IS APPROXIMATELY 113 ACRES, WHICH IS MORE THAN ONE -HUNDRED TIMES THE PROJECT AREA (0.88 ACRES). THEREFORE, THE LIMITS OF ANALYSIS IS SATISFIED AT THIS POINT AND NO ANALYSIS OF THE DOWNSTREAM NATURAL CHANNEL IS REQUIRED. ALL SYSTEMS BETWEEN THE SITE AND THE POINT WHERE THE SITE'S CONTRIBUTING DRAINAGE AREA IS LESS THAN OR EQUAL TO ONE PERCENT OF THE TOTAL WATERSHED AREA ARE MANMADE .AND ARE MADE OF NON-EROSIVE MATERIALS. THEREFORE, CHANNEL PROTECTION REQUIREMENTS ARE SATISFIED. C. FLOOD PROTECTION ANALYSIS THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS FOR FLOOD PROTECTION (9VAC25-870-66 C) STATE, CONCENTRATED STORMWATER FLOW SHALL BE RELEASED INTO A DOWNSTREAM SYSTEM WITH THE CAPACITY TO CONVEY THE POST -DEVELOPMENT PEAK FLOW FROM THE 10 -YEAR, 24-HOUR STORM EVENT. IF THE DOWNSTREAM SYSTEM DOES NOT HAVE CAPACITY, THE POST -DEVELOPMENT PEAK FLOW RATE FOR THE 10 -YEAR, 24-HOUR STORM EVENT MIUST BE RELEASED AT A RATE LESS THAN THE PRE -DEVELOPMENT PEAK FLOW RATE FROM THE 10 -YEAR, 24-HOUR STORM EVENT. THE FOUR DRAINAGE AREAS DESCRIBED IN THE SECTION A WERE 'WEST' 'SOUTH' EVALUATED TO VERIFY THE CAPACITY OF THE EXISTING ON-SITE SYSTEM. THE FLOWS WITHIN AND WERE DECREASED AND 'EAST' WAS UNCHANGED, 'CENTER' SO NO FURTHER ANALYSIS OF THE ON-SITE SYSTEMS WERE REQUIRED FOR THESE AREAS. HOWEVER, THE FLOW 'TO WAS INCREASED, SO STORM SEWER CALCULATIONS WERE COMPLETED TO DETERMINE WHETHER THE DOWNSTREAM STORM SYSTEM HAS SUFFICIENT CAPACITY FOR THE INCREASED 10 -YEAR FLOW RATES. THE CALCULATIONS SHOW THE SYSTEM HAS ADEQUATE CAPACITY, WITHOUT ACCOUNTING FOR ANY DETENTION, AND ALL HYDRAULIC GRADE LINES ARE CONTAINED WITH THE PIPES. REFER TO APPENDIX B-2 FOR CALCULATIONS. DRAWING N/A THE ON-SITE STORM SEWER SYSTEMS ALL FLOW INTO THE DOWNSTREAM STORMWATER DETENTION BASIN. AS NOTED IN SECTION A, THIS BASIN HAS A HISTORY OF OVER -TOPPING AND NO DESIGN CALCULATIONS WERE LOCATED. THEREFORE, IT WAS DETERMINED THE BASIN DOES NOT HAVE CAPACITY FOR ADDITION FLOW. CALCULATIONS WERE PERFORMED ON THE ENTIRE LIMITS OF DISTURBANCE TO DETERMINE THE INCREASED 10 -YEAR FLOW RATE FROM THE IMPROVEMENTS. REFER TO THE CALCULATIONS IN APPENDIX B-1. LINE 1 SHOWS THE FLOW FROM THE LIMITS IN THE PRE -DEVELOPED CONDITION (4.88 CUBIC FEET PER SECOND (CFS)) AND LINE 2 SHOWS THE FLOW FROM THE POST -DEVELOPED CONDITION (5.188 GFS). THEREFORE, THE DEVELOPM4ENT WOULD CAUSE A 0.31 CFS INCREASE IN THE FLOW RATE WITH NO STORMWATER MANAGEMENT MEASURES. A BIORETENTION BASIN IS PROPOSED WITH THE PROJECT TO HELP SATISFY THE WATER QUALITY AND QUANTITY. LINE 4 IN THE CALCULATIONS SHOW THE FLOW TO THE BIORETENTION BASIN (1.73 CFS) AND LINE 5 SHOWS THE FLOW AFTER ROUTING THROUGH THE BASIN (1.388 CFS). THEREFORE, THE BIORETENTION BASIN WILL REDUCE THE 10 -YEAR FLOW RATE BY 0.34 CFS, WHICH IS GREATER THAN THE 0.31 CFS INCREASE CAUSED BY THE DEVELOPMENT. FLOOD CRITERIA IS SATISFIED BY REDUCING THE FLOW RATE IN THE POST DEVELOPED CONDITION TO A RATE LESS THAN THE PRE -DEVELOPED. NO FURTHER ANALYSIS IS REQUIRED DOWNSTREAM OF THE BASIN. D. SHEET FLOW ANALYSIS THE STORMWATER MANAGEMENT LAW (9VAC25-870-66 D) STATES THAT INCREASED VOLUMES OF SHEET FLOW RESULTING FROM PERVIOUS OR DISCONNECTED IMPERVIOUS AREAS, OR FROM PHYSICAL SPREADING OF CONCENTRATED FLOW THROUGH LEVEL SPREADERS, MUST BE IDENTIFIED AND EVALUATED FOR POTENTIAL IMPACTS ON DOWN -GRADIENT PROPERTIES OR RESOURCES. WHILE A LARGE PORTION OF THE SITE WILL SHEET FLOW OUT OF THE LIMITS, IT ALL FLOWS INTO THE DOWNSTREAM STORMWATER DETENTION BASIN, THEREFORE, THESE AREAS WHERE INCLUDED IN THE OVERALL STORMWATER DESIGN FOR CHANNEL AND FLOOD PROTECTION. NO SEPARATE SHEET FLOW ANALYSIS IS REQUIRED; HOWEVER, THE AREA AND FLOW FROM THE SHEET FLOW AREA WAS DECREASED. E. STORM SEWER SYSTEM ANALYSIS THE STORM SEWER SYSTEM WAS ANALYZED USING THE 'HYDRAFLOW STORM SEWERS' PROGRAMS TO DETERMINE ADEQUACY. THE SYSTEM WAS ANALYZED TO CONVEY THE POST -DEVELOPED PEAK FLOW RATE FROM THE 10 -YEAR 24-HOUR STORM EVENT WITHOUT CAUSING EROSION OF THE SYSTEM AND TO CONFINE THE STORM EVENT WITHIN THE STORMWATER CONVEYANCE SYSTEM. THE PROPOSED SYSTEM AND THE EXISTING DOWNSTREAM SYSTEM TO OUTFALL INTO THE STORMWATER DETENTION BASIN WAS ANALYZED AND NO CAPACITY ISSUES WERE FOUND. REFER TO APPENDIX B-2 FOR CALCULATIONS. F. STORMWATER QUALITY ANALYSIS WATER QUALITY ANALYSIS WAS BASED ON THE VIRGINIA RUNOFF REDUCTION METHOD RE -DEVELOPMENT WORKSHEET - V3.0, THE TOTAL DISTURBED AREA OF 0.87 ACRES IS USED AS THE SITE AREA. THIS AREA HAS 0.21 ACRES (24%) IMPERVIOUS IN THE PRE -DEVELOPMENT CONDITION AND 0.29 ACRES (33%) IN THE POST -DEVELOPMENT CONDITION. COMPLETING THE SPREADSHEETS RESULTS IN THE REQUIREMENT FOR 0.20 POUNDS OF REQUIRED POLLUTANT REMOVAL PER YEAR. THE BIORETENTION BASIN DESCRIBED ABOVE WILL ALSO SATISFY THE WATER QUALITY REQUIREMENT. A LEVEL 1 BASIN HAS BEEN DESIGNED BASED ON VA DEQ STORMWATER DESIGN SPECIFICATIION NO. 9 - BIORETENTION, VERSION 2.0, 2013. THE BASIN WILL PICK UP A PORTION OF THE BUILDING'S ROOF AREA AND THE AREA IMMEDIATELY SURROUNDING IT, TOTALING 0.24 ACRES WITH 0.17 ACRES OF IMPERVIOUS AREA. AS PER THE REGULATIONS, THE AREA OF THE BIORETENTION BASIN ITSELF IS COUNTED AS FORESTED AREA. THIS RESULTS IN THE REMOVAL OF 0.21 POUNDS OF PHOSPHORUS, WHICH IS 0.01 POUNDS ABOVE THE REQUIREMEMT OF 0.20 POUNDS. THEREFORE, WATER QUALITY REQUIREMENTS FOR THE PROJECT ARE SATISFIED. REFER TO APPENDIX C-1 FOR COMPLETED WATER QUALITY CALCULATIONS AND APPENDIX C-2 FOR THE BLORETENTION SIZING CALCULATIONS. G. MAINTENANCE SUNRISE SENIOR LIVING WILL BE RESPONSIBLE FOR MAINTAINING THE BIORETENTION BASIN AND THE STORM SEWER SYSTEM. A MAINTENANCE AGREEMENT WILL BE CREATED AND EXECUTED WITH THE COUNTY. NO. DATE DESCRIPTION - SITE PLAN SUBMITTAL TH 0 k E. CAM BELL OLTON 9 Lie. Na,0511495 _l /A9 C �O //Z S0NAL DRAWING NUMBER C002, DRAWING TITLE ESC & STORMWATER MANGEMENT NARRATIVE DRAWING TYPE CIVIL DRAWING N/A DRAWING DATE SFPTFMRFR 91 901,R PROJECT NUMBER t onin, l y ^n^^ — — Property Line O Pod Found 0 Electric Box 10010-- x10-- ............. Contour ❑ Monument Found �j Guy Pole g Gas Line O Telephone Pedestal EO Electric Marker ohP Overhead Power (D Telephone Manhole (Z) Electrical Manhole SS @--3S Sanitary Sewer and Manhole ® Telephone Box 0 Utility Pole Storm Line and Manhole -6- Fire Hydrant ❑E Electric Transformer ❑ Storm Line and Inlet ® Water Valve �x Ground Light cats Underground Cable TV 8 Water Meter O Light Pole uge Underground Electric O Well m Fiber Optic Pedestal Irr Underground Irrigation ® Irrigation Box ❑F Fiber Optic Handhole fo Underground Fiber Optic Benchmark SUE Quality Level A, ASCE 38-02 — test pits at locations shown hereon performed by (DAA; Gas Vent unk Unknown Utility O Bollard O Gas Valve Utility, Ticket # ; Other), visible evidence and compiled records. w Waterline —a— Sign (1—post) ❑ Gas Meter Asphalt TOP=557.51 24" RCP INV. IN=548.67(Nw) Sign (2—post) O Sewer Clean Out 24" RCP INV. IN=548.96(SE) Building + -15 61,3 Spot Elevation O Wood Post —X—X— Fence (as noted) Deciduous Tree ® Metal Post Stream =`I `= Evergreen Tree 0 Statue This survey was prepared for Sunrise Senior Living. Draper Aden Associates assumes no Shrubline Shrub liability for reuse or modification of this document. Gravel Guy Wire 19 Brick Column Concrete Draper Aden Associates provides benchmarks for the construction of the improvements shown All for to existing Do o Brick Wall with ;. Brick not use spot elevations, finish floor elevations, elevations on manholes, elevations on survey ails, survey hubs, control points (horizontal points provided) or any other points for o io zo ao Fence construction other than the provided benchmarks. Failure to utilize and verify the provided benchmarks could result in damages and additional cost that are the contractor's 1 finch= 20 ft. 36" RCP INV.=547.19 Landscaped Area #2600 BARRACKS ROAD o`v SUNRISE SENIOR LIVING THECOLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR ICT��N v �j DATE DESCRIPTION SITE PLAN SUBMITTAL �j DRAWING NUMBER SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER - STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T 202 939.0027 / F (202) 939.0270 W(WW).STUD]027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEERCONSTRj NOTES: DRAWING TITLE TOPOGRAPHIC SURVEY 1.) Source of Meridian: NAD83 based upon GPS observation on July 17, 2018. 2.) Vertical datum: NAVD88 based upon GPS observation on July 17, 2018. 3.) This survey was prepared without the benefit of a title commitment or title report and all BURIED MANHOLE APPROXIMATE LOCATION INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM easements and encumbrances that might be disclosed in a title search may not be shown. I " = 2OSCALE 9%21 4.) Utilities shown are based upon: SUE Quality Level D, ASCE 38-02 — compiled records only DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 SUE Quality Level C, ASCE 38-02 — visible evidence in conjunction with compiled records. X SUE Quality Level B, ASCE 38-02 — field designation of underground utilities performed by (DAA; Miss Utility, Ticket # ; Other) and visible evidence in conjunction with compiled records. SUE Quality Level A, ASCE 38-02 — test pits at locations shown hereon performed by (DAA; Other) in conjunction with field designation of underground utilities performed by (DAA; Miss Utility, Ticket # ; Other), visible evidence and compiled records. �\ No SUE was performed or requested for this survey. Utilities shown hereon are based on STORM MANHOLE(DP2197) \� field observation only. TOP=557.51 24" RCP INV. IN=548.67(Nw) 5.) This topographic survey was completed under the direct and responsible charge of 24" RCP INV. IN=548.96(SE) Cheryl Stockton from an actual Ground survey made under my supervision; that the imagery 36" RCP IN. OUT=548.14(Sw) \ and/or original data was obtained on July 12-23, 2018; and that this plat and/or map / X meets minimum accuracy standards unless otherwise noted. 6.) Contour interval: 1'. GQ 7.) This survey was prepared for Sunrise Senior Living. Draper Aden Associates assumes no liability for reuse or modification of this document. 8.) Property lines are not shown. %\�O 9.) Draper Aden Associates provides benchmarks for the construction of the improvements shown All for to existing Do on these pians. other existing elevations are reference conditions only. \� not use spot elevations, finish floor elevations, elevations on manholes, elevations on survey ails, survey hubs, control points (horizontal points provided) or any other points for o io zo ao \ construction other than the provided benchmarks. Failure to utilize and verify the provided benchmarks could result in damages and additional cost that are the contractor's 1 finch= 20 ft. 36" RCP INV.=547.19 responsibility. SUNRISE SENIOR LIVING THECOLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR ICT��N v NO. DATE DESCRIPTION SITE PLAN SUBMITTAL �1,TH OF � Q ,.° . i' -' f �i" i, ' / A. . O �._.,,..: � CHERYL A. STOCKTON y Lic. No. 2425 /18 { 10 ,S' U 0 v DRAWING NUMBER SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER - STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T 202 939.0027 / F (202) 939.0270 W(WW).STUD]027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEERCONSTRj _ DRAWING TITLE TOPOGRAPHIC SURVEY DRAWING TYPE CIVIL RIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 W`NW.HIMESASSOCIATES.COM _ _ DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM I " = 2OSCALE 9%21 DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 SOIL BOUNDARY (TYP) --PROPERTY LINE VEHICULAR ENTRANCE JAMES HARRIS ZONING: R-15 RESIDENTIAL PARCEL ID: 60A-09-26 50 SIDE SETBACK / BARBARA HARRI'. ZONING: RURAL PARCEL ID: 60A 'OUT OF BOUNDS' TOWNHOUSE COMMUNITY JAMES MORRIS ZONING: RURAL PARCEL ID: 60A-09-24 SOIL DATA FROM NRC'S FOR ALBEMARLE COUNTY. IREFER TO EROSION AND SEDIMENT CONTROL NARRATIVE FOR FULL REPORT NOTE: EXISTING CONDITIONS OUTSIDE THE SURVEY LIMITS COMPILED FROM ALBEMARLE COUNTY GIS, SITE VISITS, AND REFERENCE TO 1989 SITE PLANS. GRAPHIC SCALE 60 0 30 60 120 { IN FEET) 1 inch = 60ft. SUNRISE SEN10R LIVING THECOLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL *000 ��I,TH O2 f E. CAM BELL BOLTON "> Lie. /No. 0/51Q495 S10NAL � DRAWING NUMBER C � SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER STUD IOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T (2021 939.0027 / F (202) 939.0270 WWW.STUD]027ARCH.COM CIVIL ENGINEER KEAST &HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEER — DRAWING TITLE OVERALL SITE LAYOUT DRAWING TYPE CIVILJA; HIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW. INTER FAC EENGINEER ING.COM DRAWING SCALE V_— 60 DRAWING DATE SEPTEMBER 2 1 I , 2018 PROJECT NUMBER 1806011 1 - 020301 - EXISTING ASPHALT DRIVE TO BE USED TO MEET COUNTY CONSTRUCTION ENTRANCE REQUIREMENT. PROVIDE WATER SOURCE FOR WHEEL WASHING. DIRECT ALL RUNOFF TO APPROVED TRAPPING MEASURE. 0.75 ACRES DRAINING TO 315 LF OF SILT FENCE I\\.J/\IIVlr,\ 1 L L_ IV,, I vl v`arr v, PATH CONTINUES OUTSIDE' OF v PROTECT SURVEY LIMITS. REPAIR TO IRRIGATION LINE MATCH EXISTING CONDITION FOLLOWING CONSTRUCTION. Ul J1111— GRAPHIC SCALE 20 0 10 20 40 ( IN FEET) 1 inch = 20ft. NOTE: TREES SHOWN OUTSIDE THE SURVEY LIMITS ARE SHOWN APPROXIMATELY BASED ON SITE VISIT; VERIFY LOCATION IF FIELD AND INSTALL TREE PROTECTION ON ALL OTHER TREES WITHIN 25' OF THE LIMITS OF DISTURBANCE 1 / EfUltal 190 11t� HARDSCAPE/PAVEMENT DEMOLITION -X-X-X-X- STORM PIPE REMOVAL REMOVE TREES/SHRUBS/VEGETATION REMOVE MULCH AREA REMOVE STORM PIPE/STRUCTURE REMOVE CONCRETE/ASPHALT SIDEWALK REMOVE CONCRETE/BRICK PATIO REMOVE WALL AND RAILINGS REMOVE GRAVEL REMOVE LIGHT POLE AND ASSOCIATED CONDUIT; COORD. W ELECTRICAL PLANS gxm• -•• • No. NOTES:. KEY SYMBOL 1. REFER TO SHEETS CO.1 & CO.2 FOR EROSION AND SEDIMENT CONTROL CRS rm 3.05 NOTES, LEGEND, AND NARRATIVE AND SHEETS C5.0 & C5.1 FOR EROSION Sf -- 3.07 AND SEDIMENT CONTROL DETAILS. IP 2. EROSION MEASURES SHALL BE INSTALLED AS THE FIRST STEP IN LAND TS TS 3.35 DISTURBANCE AND REMAIN IN PLACE UNTIL ALL UPSTREAM AREAS HAVE PJ1U MU 3.38 BEEN PERMANENTLY STABILIZED OR ARE REPLACED BY OTHER MEASURES. TP xx xx-xx- 3. EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS (MS -1 THROUGH 3.39 MS -19) SHALL BE FOLLOWED AT ALL TIMES. DC DC 4. UTILIZE SURFACE ROUGHENING ON ALL GRADED SLOPES BY CREATING HORIZONTAL DEPRESSIONS IN THE SOIL THROUGH THE USE OF EQUIPMENT WITH TRACKS OR OTHER SUITABLE METHOD. 5. INSTALL INLET PROTECTION ON INLETS AS THEY ARE INSTALLED. 6. ALL CONSTRUCTION TRAFFIC SHALL ENTER THE SITE USING THE APPROVED CONSTRUCTION ENTRANCE. CONTRACTOR SHALL SWEEP ANY K So SEDIMENT TRACKED OUTSIDE OF THE CONSTRUCTION LIMITS ONTO PARKING LOTS AND DISPOSE OF IN AN APPROVED MANOR. 7. TURN -UP ENDS OF SILT FENCE PERPENDICULAR TO CONTOUR LINES. 8. UTILIZE TEMPORARY SEEDING, MULCHING, AND DUST CONTROL FOR ALL EXPOSED AREAS DURING CONSTRUCTION. REFER TO THE LANDSCAPE PLANS FOR PERMANENT STABILIZATION DETAILS. 9. REMOVE AND DISPOSE OF ALL MATERIALS IN A LAWFUL MANOR. 10. REMOVE TREES AS NECESSARY FOR CONSTRUCTION. COORDINATE ALL TREE REMOVAL WITH OWNER. 11. EXISTING CONDITIONS OUTSIDE THE SURVEY LIMITS COMPILED FROM ALBEMARLE COUNTY GIS. NOTE: REMOVE ALL ITEMS WITHIN BUILDING FOOTPRINT; EACH ITEM MAY NOT BE CALLED OUT ON THIS PLAN Jv I\\.J/\IIVlr,\ 1 L L_ IV,, I vl v`arr v, PATH CONTINUES OUTSIDE' OF v PROTECT SURVEY LIMITS. REPAIR TO IRRIGATION LINE MATCH EXISTING CONDITION FOLLOWING CONSTRUCTION. Ul J1111— GRAPHIC SCALE 20 0 10 20 40 ( IN FEET) 1 inch = 20ft. NOTE: TREES SHOWN OUTSIDE THE SURVEY LIMITS ARE SHOWN APPROXIMATELY BASED ON SITE VISIT; VERIFY LOCATION IF FIELD AND INSTALL TREE PROTECTION ON ALL OTHER TREES WITHIN 25' OF THE LIMITS OF DISTURBANCE 1 / EfUltal 190 11t� HARDSCAPE/PAVEMENT DEMOLITION -X-X-X-X- STORM PIPE REMOVAL REMOVE TREES/SHRUBS/VEGETATION REMOVE MULCH AREA REMOVE STORM PIPE/STRUCTURE REMOVE CONCRETE/ASPHALT SIDEWALK REMOVE CONCRETE/BRICK PATIO REMOVE WALL AND RAILINGS REMOVE GRAVEL REMOVE LIGHT POLE AND ASSOCIATED CONDUIT; COORD. W ELECTRICAL PLANS gxm• -•• • No. TITLE KEY SYMBOL 3.03 GRAPHIC SCALE 20 0 10 20 40 ( IN FEET) 1 inch = 20ft. NOTE: TREES SHOWN OUTSIDE THE SURVEY LIMITS ARE SHOWN APPROXIMATELY BASED ON SITE VISIT; VERIFY LOCATION IF FIELD AND INSTALL TREE PROTECTION ON ALL OTHER TREES WITHIN 25' OF THE LIMITS OF DISTURBANCE 1 / EfUltal 190 11t� HARDSCAPE/PAVEMENT DEMOLITION -X-X-X-X- STORM PIPE REMOVAL REMOVE TREES/SHRUBS/VEGETATION REMOVE MULCH AREA REMOVE STORM PIPE/STRUCTURE REMOVE CONCRETE/ASPHALT SIDEWALK REMOVE CONCRETE/BRICK PATIO REMOVE WALL AND RAILINGS REMOVE GRAVEL REMOVE LIGHT POLE AND ASSOCIATED CONDUIT; COORD. W ELECTRICAL PLANS gxm• -•• • No. TITLE KEY SYMBOL 3.03 CONSTRUCTION ROAD STABILIZATION CRS rm 3.05 SILT FENCE Sf -- 3.07 STORM DRAIN INLET PROTECTION IP 3.31 TEMPORARY SEEDING TS TS 3.35 MULCHING PJ1U MU 3.38 TREE PRESERVATION AND TP xx xx-xx- PROTECTION 3.39 DUST CONTROL DC DC i� CLIENT ARCHITECT STRUCTURAL ENGINEER CONCRETE STAIRS WITH CHEEK WALLS AND RAILINGS; SEE DETAIL ON C5.1 ASPHALT PAVEMENT TO TIE INTO EXISTING PATI - NOTES: 1. EXISTING CONDITIONS OUTSIDE THE SURVEY LIMITS COMPILED FROM ALBEMARLE COUNTY GIS, SITE VISITS, AND REFERENCE TO 1989 SITE PLANS. 2. SLOPES ON ALL PATHS SHALL MEET ADA REQUIREMENTS. MAXIMUM CROSS -SLOPE IS 2% AND MAXIMUM LONGITUDINAL SLOPE IS 5'%. MAXIMUM SLOPE OF RAMP SHALL BE 1:12. GRAPHIC SCALE 10 0 5 10 20 ( IN FEET) 1 inch = 10ft. SUNRISE SENIOR LIVING TH E COLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE : SITE PLAN SUBMITTAL ��H 0+' vj � E. CAM BELL OLTO Lie. No. 1151495 i� J:: 'fa STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T (202) 939.0027 / F (202) 939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEER CONCRETE STAIRS WITH CHEEK WALLS AND RAILINGS; SEE DETAIL ON C5.1 ASPHALT PAVEMENT TO TIE INTO EXISTING PATI - NOTES: 1. EXISTING CONDITIONS OUTSIDE THE SURVEY LIMITS COMPILED FROM ALBEMARLE COUNTY GIS, SITE VISITS, AND REFERENCE TO 1989 SITE PLANS. 2. SLOPES ON ALL PATHS SHALL MEET ADA REQUIREMENTS. MAXIMUM CROSS -SLOPE IS 2% AND MAXIMUM LONGITUDINAL SLOPE IS 5'%. MAXIMUM SLOPE OF RAMP SHALL BE 1:12. GRAPHIC SCALE 10 0 5 10 20 ( IN FEET) 1 inch = 10ft. SUNRISE SENIOR LIVING TH E COLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION - SITE PLAN SUBMITTAL ��H 0+' vj � E. CAM BELL OLTO Lie. No. 1151495 DRAWING NUMBER C300 SUNRISE SENIOR LIVING 7902 W ESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T (202) 939.0027 / F (202) 939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEER DRAWING TITLE SITE PLAN _ DRAWINGTYPE CIVIL HIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM DRAWING SCALE 1 „ — 1 0 — DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER PROJECT 1 18060111 - 020301 APPLY AS NEEDED WITHIN LIMITS OF DISTURBANCE ,,, ..................... . Room I t 7'_----577.8(ME) No. TITLE KEY SYMBOL 3.07 STORM DRAIN INLET PROTECTION IP 3.30 TOPSOILING (TO TO 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDING PS PS 3.36 SOIL STABILIZATION BLANKETS & MATTING B/M B/M 3.39 DUST CONTROL DC DC : t 7'_----577.8(ME) No. TITLE KEY SYMBOL 3.07 STORM DRAIN INLET PROTECTION IP 3.30 TOPSOILING (TO TO 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDING PS PS 3.36 SOIL STABILIZATION BLANKETS & MATTING B/M B/M 3.39 DUST CONTROL DC DC NOTES: 1. EXISTING CONDITIONS OUTSIDE THE SURVEY LIMITS COMPILED FROM ALBEMARLE COUNTY GIS, SITE VISITS, AND REFERENCE TO 1989 SITE PLANS. 2. SLOPES ON ALL PATHS SHALL MEET ADA REQUIREMENTS. MAXIMUM CROSS -SLOPE IS 2% AND MAXIMUM LONGITUDINAL SLOPE IS 5%. MAXIMUM SLOPE OF RAMP SHALL BE 1:12. 3. SHEETS C5.0 FOR EROSION AND SEDIMENT CONTROL DETAILS. 4. EROSION MEASURES FROM PREVIOUS PHASES SHALL REMAIN IN PLACE AND STAY IN PLACE UNTIL ALL UPSTREAM AREAS HAVE BEEN PERMANENTLY STABILIZED OR ARE REPLACED BY OTHER MEASURES. 5. CONSTRUCTION ENTRANCE AND CONSTRUCTION ROAD STABILIZATION SHALL REMAIN OPERATIONAL THROUGHOUT CONSTRUCTION. ALL CONSTRUCTION TRAFFIC SHALL ENTER THE SITE USING THE APPROVED CONSTRUCTION ENTRANCE. 6. EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS (MS -11 THROUGH MS -19) SHALL BE FOLLOWED AT ALL TIMES. 7. INSTALL INLET PROTECTION AS INLETS ARE INSTALLED. 8. ALL DISTURBED AREAS NOT SCHEDULED TO RECEIVE HARDSCA,PE OR LANDSCAPE ARE TO RECEIVE TOPSOIL, PERMANENT SEEDING, AND MULCHING IN ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. 9. INSTALL BLANKET MATTING (MINIMUM LIFE SPAN OF ONE YEAR) ON ALL SLOPES 4:1 OR STEEPER. REFER TO SHEET C4.1 FOR STORM SEWER PROFILE GRAPHIC SCALE 10 0 5 10 20 { IN FEET) 1 inch= 10ft. Proposed Storm Sewer STRUCTURE SCHEDULE STRC: NUMBER LENGTH STRC. DATA MATERIAL EXISTING YARD INLET 15" 34.26 LF STA: 10+00.00 2-3 15" TOP: 574.92 HDPE Ex.3 INV. IN: 565.35 (FROM #1, 15" HDPE, NW) HDPE INV. IN: 569.66 (FROM #, 6" PVC, SE) 0.00% INV. IN: 565.31 (FROM #, 24" RCP, NE) 7.87 LF INV. OUT: 565.29 (TO #Ex.2, 24" RCP,SW) HIMES ASSOCIATES, LTD T (7003) 59D 72DRIVE (703) 591.7284 WWW.HIMESAssoaaTEs.coM BIORETENTION C.O. INTERFACE ENGINEERING OHINGTON, DC 20036EET NW, SUITE 270 WAS 370.9555 FACEENGINEERING.COM STA: ??? DRAWING SCALE H: 1„ = 10',V: 5:1 CO TOP: 571.99 PROJECT NUMBER 18060111 - 020301 INV. OUT: 566.75 (TO #4, 4" HDPE,E) 48" VDOT MH STA: 10+07.87 TOP: 575.50 1 INV. IN: 565.58 (FROM #2, 15" HDPE, SW) INV. IN: 572.00 (FROM #RD, 6" HDPE, NW) INV. OUT: 565.48 (TO #Ex.3, 15" HDPE,SE) 48 IN. MH STA: 10+42.13 2 TOP: 573.15 INV. IN: 566.02 (FROM #3, 15" HDPE, SW) INV. OUT: 565.92 (TO #1, 15" HDPE,NE) 48 INN/Al STA: 10+55.94 3 TOP: 573.15 INV. IN: 566.26 (FROM #4, 15" HDPE, W) INV. OUT: 566.16 (TO #2, 15" HDPE,NE) 24" NYLOPLAST BASIN W DOME GRATE STA: 11 +05.15 4 TOP: 571.00 INV. IN: 566.75 (FROM #CO, 4" HDPE, W) INV. OUT: 566.75 (TO #3, 15" HDPE,E') Proposed Storm Sewer PIPE PIPE SIZE LENGTH SLOPE MATERIAL 1-2 15" 34.26 LF 1.00% HDPE 2-3 15" 13.81 LF 1.00% HDPE 3-4 15" 49.20 LF 1.00% HDPE 4 -CO 4" 32.04 LF 0.00% HDPE Ex.3-1 15" 7.87 LF 1.63% HDPE 10+00 10+50 11+00 1-1 +5u STORM SEWER PROFILE - Scale: H: V-10 V: 5.00:1 85 • AA But 65 60 I1 -1-i5 SUNRISE SENIOR LIVING THECOLONNADES EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL ���,Tx % � E. CAM BELL �LTON >- Lie, No. 051495 % R SSjQNAL� DRAWING NUMBER C4,01 SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW-SUNRISESENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T(202)939.0027{F(202)939.0270 WWW.STUDI027ARCH.COM CIVIL ENGINEER KEAST & HOOD Co. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T(434)260-8181 WWW.KEASTHOOD.COM MEP ENGINEER DRAWING TITLE STORM SEWER PROFILES DRAWING TYPE CIVIL HIMES ASSOCIATES, LTD T (7003) 59D 72DRIVE (703) 591.7284 WWW.HIMESAssoaaTEs.coM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 WWW)_DAaCOM INTERFACE ENGINEERING OHINGTON, DC 20036EET NW, SUITE 270 WAS 370.9555 FACEENGINEERING.COM DRAWING SCALE H: 1„ = 10',V: 5:1 PROJECT NUMBER 18060111 - 020301 DRAWING DATE SEPTEMBER 21, 2018 16' MAXIMUM SPACING OF 2"x4" SPACERS 2"x4" ANCHORS EMERGENCY OVERFLOW Le CURB INLET PROTECTION WITH 2X4 WOODEN WEIR NOT TO SCALE EXISTING • F PAVEMENT EXISTING _/ GROUND FILTER—/ 6" MIN, --j H CLOTH ,— SIDE ELEVATION VDOT #1 COARSE AGGREGATE * MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION FILTER CLOTH PLAN VIEW 12' MIN.* 10' MIN iLMILWH►/NQ 1 CONSTRUCTION ROAD STABILIZATION 3.03 NOT TO SCALE MOUNTABLE BERM (OPTIONAL) 10' MIN. EXISTING PAVEMENT 10' MIN. i_ �IIAMRW , 5' MIN. TOPSOILING To FIELD EXPLORATION OF THE SITE SHALL BE MADE TO DETERMINE IF THERE IS SUFFICIENT SURFACE SOIL OF GOOD QUALITY TO JUSTIFY STRIPPING. TOPSOIL SHALL BE FRIABLE AND LOAMY (LOAM, SANDY LOAM, SILT LOAM, SANDY CLAY LOAM, CLAY LOAM). IT SHALL BE FREE OF DEBRIS, TRASH, STUMPS, ROCKS, ROOTS, AND NOXIOUS WEEDS, AND SHALL GIVE EVIDENCE OF BEING ABLE TO SUPPORT HEALTHY VEGETATION. IT SHALL CONTAIN NO SUBSTANCE THAT IS POTENTIALLY TOXIC TO PLANT GROWTH. ALL TOPSOIL SHALL BE TESTED BY A RECOGNIZED LABORATORY FOR THE FOLLOWING CRIT17ERIA: • ORGANIC MATTER CONTENT SHALL BE NOT LESS THAN 1.5% BY WEIGHT. • PH RANGE SHALL BE FROM 6.0-7.5. IF PH IS LESS THAN 6.0, LIME SHALL BE ADDED IN ACCORDANCE WITH SOIL TEST RESULTS OR IN ACCORDANCE WITH THE RECOMMENDATIIONS OF THE VEGETATIVE ESTABLISHMENT PRACTICE BEING USED. • SOLUBLE SALTS SHALL NOT EXCEED 500 PPM. IF ADDITIONAL OFF—SITE TOPSOIL IS NEEDED, IT MUST MEET THE STANDARDS STATED ABOVE. STRIPPING: TOPSOIL OPERATIONS SHOULD NOT BE PERFORMED WHEN THE SOIL IS WET OR FROZEN. STRIPPING SHALL BE CONFINED TO THE IMMEDIATE CONSTRUCTION AREA. A 4—TO 6—INCH STRIPPING DEPTH IS COMMON, BUT DEPTH MAY VARY DEPENDING ON THE PARTICULAR SOIL. ALL PERIMETER DIKES, BASINS, AND OTHER SEDIMENT CONTROLS SHALL BE IN PLACE PRIOR TO STRIPPIN+G. STOCKPILING: TOPSOIL SHALL BE STOCKPILED IN SUCH A MANNER THAT NATURAL DRAINAGE IS NOT OBSTRUCTED AND NO OFF—SITE SEDIMENT DAMAGE SHALL RESULT. STABILIZE OR PROTECT STOCKPILES IN ACCORDANCE WITH MS #2. SIDE SLOPES OF THE STOCKPILE SHALL NOT EXCEED 2:1. PERIMETER CONTROLS MUST BE PLACED AROUND THE STOCKPILE IMMEDIATELY; SEEDING (OF STOCKPILES SHALL BE COMPLETED WITHIN 7 DAYS OF THE FORMATION OF THE STOCKPILE, IN ACCORDANCE WITH STD. & SPEC. 3.31, TEMPORARY SEEDING IF IT IS TO REMAIN DORMANT FOR LONGER THAN 30 DAYS (REFER TO MS #1 AND MS #2). LIMING: WHERE THE PH OF THE SUBSOIL IS 6.0 OR LESS, OR THE SOIL IS COMPOSED OF HEAVY CLAYS, AGRICULTURAL LIMESTONE SHALL BE SPREAD IN ACCORDANCE WITH THE SOIL TEST OR THE VEGETATIVE ESTABLISHMENT PRACTICE BEING USED, BONDING: AFTER THE AREAS TO BE TOPSOILED HAVE BEEN BROUGHT TO GRADE, AND IMMEDIATELY PRIOR TO DUMPING AND SPREADING THE TOPSOIL, THE SUBGRADE SHALL BE LOOSENED BY DISCING OR SCARIFYING TO A DEPTH OF AT LEAST 2 INCHES TO ENSURE BONDING OF THE TOPSOIL AND SUBSOIL. APPLYING TOPSOIL: TOPSOIL SHALL NOT BE PLACED WHILE IN A FROZEN OR MUDDY CONDITION, WHEN TOPSOIL OR SUBGRADE IS EXCESSIVELY WET, OR IN A CONDITION THAT MAY OTHERWISE BE DETRIMENTAL TO PROPER GRADING OR PROPOSED SODDING OR SEEDING. THE TOPSOIL SHIALL BE UNIFORMLY DISTRIBUTED TO A MINIMUM COMPACTED DEPTH OF 2 INCHES ON 3:1 OR STEEPER SLOPES AND 4 INCHES ON FLATTER SLOPES. ANY IRREGULARITIES IN THE SURFACE, RESULTING FROM TOPSOILING OR OTHER OPERATIONS, SHALL BE CORRECTED IN ORDER TO PREVENT THE FORMATION OF DEPRESSIONS OR WATER POCKETS. IT IS NECESSARY TO COMPACT THE TOPSOIL ENOUGH TO ENSURE GOOD CONTACT WITH THE UNDERLYING SOIL AND TO OBTAIN A LEVEL SEEDBED FOR THE ESTABLISHMENT OF HIGH WAINTENANCE TURF. HOWEVER, UNDUE COMPACTION IS TO BE AVOIDED AS IT INCREASES RUNOFF VELOCITY AND VOLUME, AND DETERS SEED GERMINATION. SPECIAL CONSIDERATION SHOULD BE GIVEN TO, THE TYPES OF EQUIPMENT USED TO PLACE TOPSOIL IN AREAS TO RECEIVE FINE TURF. AVOID UNNECESSARY COMPACTION BY HEAVY MACHINERY WHENEVER POSSIBLE. TOPSOILING 3.30 NOT TO SCALE 1. SET THE STAKES. 6'MAX. FLOW r 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. 2. EXCAVATE A 4"x4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. FLO NOTES: • WOODEN STAKES TO BE A MINIMUM OF 5' LONG FILTER FABRIC AND HAVE A MINIMUM DIAMETER OF 2" WHEIN OAK AND 4" WHEN PINE. • SILT FENCE FABRIC SHALL MEET ALL REQUIREMENTS OF TABLE 3.05-8 OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOk<. • SILT FENCE SHALL BE A MINIMUM OF 24" ABOVE THE GROUND AND SHALL NOT EXCEED 34" ABOVE EMBED GROUND. • SILT FENCE SHALL TREAT NO MORE THAN 1/4 ACRE PER 100 LINEAR FEET OF FENCE SILT FENCE INSTALLATION DETAIL NOT TO SCALE TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES ARCHITECT RATES: MULCHES: NOTES: Per Acre � Per 1000 sq. ft. or Hay 1 Z - 2 tons 70 - 90 lbs. Free from weeds and coarse STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T(202)939.0027/F(202)939.0270 WWW.STUD]027ARCH.COM CIVIL ENGINEER (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower DRAWING TITLE p pp CO EROSION & SEDIMENT ONTROL DETAILS winter cover) or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWWJNTERFACEENGINEERING.COM dry periods.* Apply as DRAWING SCALE NOT TO SCALE slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 lengths. Air-dried. Da not - use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - b tons 185 - 275 lbs. Air - Free of coarse matter. Air - dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handier, or by hand. Bark Chips 50 - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 20001bs.%ac. or 45 lbs./1000 sq. ft. Source: Va. DSWC MULCHING 3.35 NOT TO SCALE TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES ARCHITECT RATES: MULCHES: NOTES: Per Acre � Per 1000 sq. ft. or Hay 1 Z - 2 tons 70 - 90 lbs. Free from weeds and coarse STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T(202)939.0027/F(202)939.0270 WWW.STUD]027ARCH.COM CIVIL ENGINEER (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower DRAWING TITLE p pp CO EROSION & SEDIMENT ONTROL DETAILS winter cover) or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWWJNTERFACEENGINEERING.COM dry periods.* Apply as DRAWING SCALE NOT TO SCALE slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 lengths. Air-dried. Da not - use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - b tons 185 - 275 lbs. Air - Free of coarse matter. Air - dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handier, or by hand. Bark Chips 50 - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 20001bs.%ac. or 45 lbs./1000 sq. ft. 0 2"x4" WOOD FRAME DROP INLET UPON SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. SILT FENCE DROP INLET PROTECTION DETAIL NOT TO SCALE a PLASTIC TIES (BLACK, 6" LONG") FIBERGLASS "T" POST OR STEEL POST 1 1/4" DRIP LINE FIBERGLASS "T" POST 6'-6" 8 POSTS (TYPICAL) DRIP LINE 4'-0" PLASTIC PROTECTIVE FENCE PROTECTIVE PLASTIC FENCING COLOR: INTERNATIONAL ORANGE ROLL SIZE: 4' X 164' MESH OPENING: 1 3/4" x 2 3/4" WEIGHT: 32 LBS./ROLL TREE PROTECTION DETAIL — PLASTIC FENCING NOT TO SCALE SUNRISE SENIOR LIVING C THEu 1 E C O L O N N j (� S D Emil EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOP CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL ��AZ,TH ®�+ Pj�C r+ � E. 6�BEL&L Oi.TON � Lie. N�oJ.% 0%511495 ONA�^ DRAWING NUMBER C5*U _ SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENJORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T(202)939.0027/F(202)939.0270 WWW.STUD]027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T(434)260-8181 WWW.KEASTHOOD.COM MEP ENGINEER — DRAWING TITLE p pp CO EROSION & SEDIMENT ONTROL DETAILS DRAWING TYPE CIVIL HIMES ASSOCIATES, LTD 3702 PENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWWJNTERFACEENGINEERING.COM DRAWING SCALE NOT TO SCALE DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301 - TEMPORARY SEEDING Ts TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS" PLANTING DATES SPECIES RATE (LBS. ACRE) SEPT. 1 -FEB. 28 50/50 MIX OF ANNUAL RYEGRASS 75 (LOLIUM MULTI-FLORUM) & CEREAL (WINTER) RYE (SECALE CEREALE) MAR. 1 -APR. 30 ANNUAL RYEGRASS (LOLIUM MULTI-FLORUM) 75 MAY 1 -AUG. 31 GERMAN MILLET (SETARIA ITALICA) 75 TEMPORARY SEEDING 3.31 NOT TO SCALE PERMANENT SEEDING Ps TABLE 3.32-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA MINIMUM CARE LAWN TOTAL LBS. PER ACRE -COMMERCIAL OR RESIDENTIAL 180 LBS. -KENTUCKY 31 OR TURF -TYPE TALL FESCUE 95-100 LBS. -IMPROVED PERENNIAL RYEGRASS 0-5% -KENTUCKY BLUEGRASS 0-5% HIGH -MAINTENANCE LAWN 200-250 LBS. -KENTUCKY 31 OR TURF -TYPE TALL FESCUE 100% 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) PART # I -KENTUCKY 31 FESCUE 108 LBS. -RED TOP GRASS 2 LBS. -SEASONAL NURSE CROP *20 LBS. -CROWN VETCH **20 LBS. ANGLES 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 CROWN VETCH EAST OF FARMVILLE, VA. (MAY THROUGH SEPTEMBER USE HULLED SERICEA, ALL OTHER PERIODS USE UNHULLED SERICEA.) IF FLATPEA IS USED IN LIEU OF CROWN VETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED MUST BE PROPERLY INOCULATED. WEEPING LOVEGRASS MAY BE ADDED TO ANY SLOPE OR LOW -MAINTENANCE MIX DURING WARMER SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES. SOLID PERMANENT SEEDING (PIEDMONT VIRGINIA) 3.32 NOT TO SCALE 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 COMPACTED - REGULAR BACKFILL FOR DEEP EXCAVATIONS, TRENCH MAY BE WIDENED ABOVE THIS POINT. PER OSHA STANDARDS NOT LESS THAN 12" NOR MORE THAN 24" (TYP.) DETECTABLE WARNING TAPE ANY OVER EXCAVATION SHALL BE REPLACED WITH BEDDING MATERIAL & COMPACTED TO 6" MIN. 95% STANDARD PROCTOR N OTES: 1. TRENCH BEDDING PER DETAIL 107.00 & 107.01 OF THE VDOT ROAD AND BRIDGE STANDARDS. 2. MATERIAL IN HAUNCH ZONE SHALL BE VDOT BEDDING MATERIAL. 3. INITIAL BACKFILL SHALL BE VDOT CLASS 1 BACKFILL MATERIAL. 4, ALL BACKFILL AND BEDDING MATERIALS AND INSTALLATION SHALL BE IN ACCORDANCE WITH SECTION 302 OF THE ROAD AND BRIDGE SPECIFICATIONS. 5. ALL MATERIAL SHALL BE PLACED IN 6" LOOSE LAYERS AND COMPACTED TO AT LEAST 95% STANDARD PROCTOR, UNLESS OTHERWISE NOTED. WORK IN AND TAMP THE HAUNCHING MATERIAL IN THE AREA BETWEEN THE BEDDING AND UNDERSIDE OF PIPE. 6. DO NOT PERMIT COMPACTION EQUIPMENT TO CONTACT PIPE. REMOVE ANY DAMAGED PIPE SECTIONS BEFORE PROCEEDING. STORM SEWER TRENCH BEDDING DETAIL NOT TO SCALE 4" 3,000 PSI CONCRETE W 6x6-W1.4xW1.4 MESH AT FINISH MID -DEPTH; BROOM FINISH GRADE SEE PLAN NOTES: 1. TRANSVERSE EXPANSION JOINTS SHALL BE PLACED AT 30'-0" o.c. (MAX.) 2. TRANSVERSE CONTROL JOINTS SHALL BE PLACED AT 5'-0" o.c. BETWEEN EXPANSION JOINTS. 3. LONGITUDINAL JOINTS ARE REQUIRED FOR SIDEWALKS WITH WIDTHS GREATER THAN 10'-0". LONGITUDINAL JOINTS SHALL BE PLACED AT EQUAL INTERVALS NOT TO EXCEED 10'-0" IN WIDTH. TYPICAL SIDEWALK/RAMP CROSS SECTION 3 N NOT TO SCALE 2" SM -9.5A TYPICAL ASPHALT PATH CROSS SECTION 4 NOT TO SCALE Z X Q w- LJ j o 0 i I 0 NOTES: 1. MANHOLE TO MEET CURRENT REQUIREMENTS OF ASTM C-478. 2. CONCRETE TO BE 4000 PSI MINIMUM COMPRESSIVE `,STRENGTH. 3. ALL REINFORCIING STEEL TO MEET CURRENT REQUIREMENTS OF ASTM A-615. 4. TAPERED JOINT WITH 0 -RING GASKET TO MEET CURRENT REQUIREMENTS OF ASTM C-443, OR DOUBLE BUTYL RUBBER SEALANT, ASTM C-990. 5. FLEXIBLE JOINT CONNECTION, ASTM C-923, REQUIRED ON ALL PIPE CONNECTIONS TO SANITARY MANHOLES. ANY VOID SHALL BE FILLED FLUSH WITH INSIDE FACE OF MANHOLE WITH NON -SHRINK GROUT. 6. IS -1 SHAPING REQUIRED IN ALL STRUCTURES PER VDOT STANDARDS. 7. MANHOLE FRAMES AND COVERS: 24" I.D. RATED FOR AASHTO H-20 LOADS. ASTM A 536, (GRADE 60-40-18 DUCTILE OR ASTM A 48, CLASS 35 GRAY IRON. SANITARY MANIHOLES SHALL HAVE GASKETS. "SANITARY SEWER" SHALL BE CAST ON THE COVER. 8. MANHOLE STEPS: ASTM A 615 1" STEEL REINFORCING (RODS ENCASED IN ASTM D 4101, POLYPROPYLENE. 6" (MIN.) 6" COMPACTED STONE (MIN.) PRECAST CONCRETE STORM MANHOLE NOT TO SCALE NYLOPLAST DRAIN BASIN 1� 2OINTEGRATED DUCTILE IRON FRAME & GRATE TO MATCH BASIN O.D. 18" MIN WIDTH GUIDELINE 8" MIN THICKNESS; GUIDELINE I MINIMUM PIPE BURIAL PART # I STRUCTURAL ENGINEER (I)VARIABLE INVERT HEIGHTS DEPTH PER PIPE DRAWN BY EBC MATERIAL AVAILABLE (ACCORDING TO MANUFACTURER 5QADAPTER PEDESTRIAN/STANDARED PLANS/TAKE OFF) RECOMMENDATION ANGLES TRAFFIC LOADS: CONCRETE SLAB DIMENSIONS ARE FOR GUIDELINE DROP IN VARIABLE 0° - 360° ACCORDING TO PURPOSES ONLY. ACTUAL CONCRETE SLAB MUST BE DESIGNED 1 PLANS I TAKING INTO CONSIDERATION LOCAL SOIL CONDITIONS, TRAFFIC DOME DROP IN LOADING, & OTHER APPLICABLE DESIGN FACTORS. ®VARIOUS TYPES OF INLET & OUTLET ADAPTERS AVAILABLE: 4" - 30" FOR CORRUGATED HDPE (ADS N-12, ADS SINGLE WALL, HANCOR DUAL WALL), SDR 35, SCH 40 DWV, CORRUGATED & RIBBED PVC WATERTIGHT JOINT (CORRUGATED HDPE SHOWN) .=............. Q- 8" - 30" GRATES/SOLID COVERS SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05, WITH THE EXCEPTION OF THE 8" - 15" BRONZE GRATES 2Q- 12" - 30" FRAMES SHALL BE DUCTILE IRON PER ASTM A536 GRADE 70-50-05 3& DRAIN BASIN TO BE CUSTOM MANUFACTURED ACCORDING TO PLAN DETAILS. RISERS ARE NEEDED FOR BASINS OVER 84" DUE TO SHIPPING RESTRICTIONS. A T3 VARIABLE SUMP DEPTH ACCORDING TO PLANS (6" MIN ON 8"-24", 10" MIN ON 30") 4" MIN ON 8" - 24" 6" MIN ON 30" THE BACKFILL MATERIAL SHALL BE CRUSHED STONE OR OTHER GRANULAR MATERIAL MEETING THE REQUIREMENTS OF CLASS II MATERIAL AS DEFINED IN ASTM D2321. BEDDING & BACKFILL FOR SURFACE DRAINAGE INLETS SHALL BE PLACED & COMPACTED UNIFORMLY IN ACCORDANCE WITH ASTM D2321. A PART # I STRUCTURAL ENGINEER CGRATE OPT( ONS DRAWN BY EBC MATERIAL 8" 2808AG PEDESTRIAN/STANDARED SOLID BRONZE DOME I DROP IN 10" 2810AG PEDESTRIAN/STAN DARED SOLID BRONZE DOME DROP IN 12" 2812AG PEDESTRIAN STANDAR2D SOLID BRONZE DOME DROP IN 15" 2815AG PEDESTRIAN STANDARD SOLID BRONZE DOME DROP IN 18" 2818AG PEDESTRIAN STANDARD SOLID N/A DOME DROP IN 24" 2824AG PEDESTRIAN STANDARD SOLID N/A DOME DROP IN 30" 2830AG I PEDESTRIAN STANDARD SOLID i N/A DOME N/A SEE DRAWING NO. 7001-110-065 ARCHITECT STRUCTURAL ENGINEER DRAWN BY EBC MATERIAL 3130 VERONA AVE ®- DRAINAGE CONNECTION STUB JOINT TIGHTNESS SHALL CONFORM TO ASTM D3212 FOR CORRUGATED HDPE (ADS & HANCOR DUAL WALL) & SDR 35 PVC OF �'k r" E. CAM BELL flLTflN � Lic. No. 0 DRAWING NUMBER C5* BUFORD, GA 30518 & ADAPTERS CAN BE MOUNTED ON ANY ANGLE 0° TO 360°. TO DETERMINE MINIMUM ANGLE BETWEEN ADAPTERS SEE DRAWING NO. 7001-110-012, 7001-110-013, & 7001-110-014. DATE 1-23-06 PHN (770) 932.2443 FAX (7701932-2490 Nylto IaS { 6 - GRATES SHALL MEET H-10 LOAD RATING FOR 12" - 24" PED l www.nyloplast-us.com APPD BY CJA PROJECT NOJNAME TITLE 7 - GRATES SHALL MEET H-20 LOAD RATING FOR 30" PED & 12" - 30" STD & SOLID 8 - ALL BRONZE GRATES, DROP IN GRATES, & 8" & 10" PED/STD GRATES & SOLID COVERS ARE RATED FOR LIGHT DUTY APPLICATIONS ONLY DATE 1.23-06 DRAIN BASIN WITH STANDARD GRATE QUICK SPEC INSTALLATION DETAIL 9 - DOME GRATES HAVE NO LOAD RATING HIMES ASSOCIATES, LTD 3702 FENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM 0 DWG SIZE A SCALE 1:40 SHEET 1 OF 1 I DWG NO. 7001-110.144 REV D NYLOPLAST BASIN & INLINE DRAIN INSTALLATION DETAIL'S NOT TO SCALE NOTES. • NYLOPLAST OR APPROVED EQUAL. • THIS DETAIL IS TO BE USED FOR REFERENCE ON ALL SIZED INLINE DRAINS AND DRAIN BASINS. SEE STORM SCHEDULE FOR SIZE AND GRATE TYPE FOR EACH STRUCTURE. • CONCRETE COLLAR REQUIRED IN LANDSCAPE AREAS • ALL SUMPS SHALL BE FILLED WITH NYLOPLAST PLUG OR CONCRETE TO THE INVERT OUT. SET POSTS IN SLEEVES & CAULK W/ NON -SHRINK GROUT (TYP.) 2-#5 CONT IN EA SIDEWALL #4 ® 10" 0. C. E.W. (EXTEND UP SIDEWALLS) / J" CHAMFER ALL EXPOSED 3» CORNERS (TYP.) 5.0' ------------- W ADA COMPLIANT RAILING; SEE NOTE #3. CROSS SECTION HANDRAIL SHALL EXTEND A MIN. 12" BEYOND TOP AND BOTTOM STEPS LONGITUDINAL SECTION STAIR NOTES: 1. STAIRS SHALL BE PITCHED TO DRAIN A MINIMUM OF J" PER TREAD FROM TOE TO NOSE OF THE TREAD. 2. **TREADS SHALL BE EQUAL HEIGHT (BETWEEN 5" AND 7") TO MEET THE ELEVATION CHANGE SHOWN ON THE PLANS. 3. 1-1/2" O.D. ALUMINUM DOUBLE RAILING WITH POWDER COATING; TOP RAIL 36" AND BOTTOM RAIL 20" ABOVE WALK; SPACE VERTICAL SUPPORTS A MIN. OF 5' O.C; INSTALL PER MANUFACTURERS RECOMMENDATIONS. CONCRETE STAIRS 6 NOT TO SCALE CLIENT ARCHITECT STRUCTURAL ENGINEER NOT FOR CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTALI,,Tx OF �'k r" E. CAM BELL flLTflN � Lic. No. 0 DRAWING NUMBER C5* SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISESENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T (202) 939.0027 / F (202) 939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO. 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEER DRAWING TITLE SITE DETAILS DRAWING TYPE CIVIL HIMES ASSOCIATES, LTD 3702 FENDER DRIVE T (703) 591.7272 / F (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM INTERFACE ENGINEERING 2000 M STREET NW, SUITE 270 WASHINGTON, DC 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM DRAWING SCALE NOT TO SCALE DRAWING DATE�SjQNA�� SEPTEMBER 21, 2018 PR011ECT NUMBER 18060111 - 020301 NOTE: REFER TO LANDSCAPE PLAN FOR PLANTING PLAN AND SCHEDULE. SHREDDED V/ HARDWOOD MULCH TOP OF MULCH; ELEV.: 570.00 TOP OF SOIL MEDIA; ELEV.: 569.75 3'-6" _ TOP OF CHOKER STONE; ELEV.: 567.75 _ TOP OF STORAGE STONE; ELEV.: 567.50 2' WIDE NONWOVEN GEOTEXTILE ON TOP OF STONE AND CENTERED ABOVE THE PERFORATED PIPE BOTTOM OF EXCAVATION STONE LAYER; ELEV.: 566.50 STORAGE STONE: DOUBLE WASHED VDOT PERFORATED NO. 57 AGGREGATE EXISTING SUBGRADE UNDERDRAIN PIPE; 2' WIDE STRIP OF NONWOVEN INV. 566.75 GEOTEXTILE BETWEEN CHOKER AND STORAGE STONE BIORETENTION FILTER CROSS-SECTION NO SCALE 24" NYLOPLAST DRAIN BASIN W DOME GRATE IF UPSTREAM AREAS ARE NOT FULLY STABILIZED UPON STARTING BIORETENTION BASIN CONSTRUCTION, INSTALL DOUBLE LAYER OF PERIMETER SILT FENCE AT TOP TOP OF BASIN; OF EMBANKMENT SLOPES (TYP.) ELEV.: 571.35 PAINT ALL EXPOSED BASIN 10YR. WSE: 571.50 SURFACE AREA WITH BLACK 2YR. WSE: 571.23 PAINT PER (MANUFACTURER -RECOMMENDATIONS--- -1 Y - - 571.04 -� - 3 - - - - - - - - - - - - - - ------(MAX) 1 - - - - - - - -- -------PVC CLEANOUT-_�:. , ;...'......_-. 3" ORIFICE INV.: 570.50 0 0 0 0 0 0 0 0 0 0 0 'O 0,0 0 0 0 0 0 0 0 0 O O 15" HDPE 4" PVC \_4" PERFORATED INV.: 566.75 INV.: 566.75 PVC W CLEANOUT BIORETENTION FILTER ELEVATIONS NO SCALE Bioretention - Volume/Area Provided EXTEND HARDWOOD - - MULCH UP SLOPES Description Elev. Depth (ft) Area (sf) Vr Inc. Vol. (cf) Cum. Vol. (cf) Bottom of Stone 566.50 0 463 0 0 0 UD Invert 566.75 0.25 463 0 0 0 Top of Storage Stone 567.50 1.00 463 0.4 139 139 Top of Filter Stone 567.75 1.25 463 0.4 46 185 Top of Bio Media 569.75 3.25 463 0.25 232 417 Top of Mulch 570.00 3.50 463 0.25 29 446 Orifice Invert 570.50 4.00 688 1.00 288 733 Storage 571.00 4.50 986 1.00 419 1152 Storage 572.00 5.50 1373 1.00 1180 2331 NOTE: GRADING MUST BE PREFORMED TO PROVIDE THE MINIMUM AREAS AT EACH ELEVATION NOTED IN THE CHART ABOVE. DOUBLE WASHED VDOT NO. 57 AGGREGATE NO SCALE PVC SCREW CAP; MIN. 6" ABOVE BIORETENTION MEDIA PVC VENTED CAP; MIN. 6" ABOVE BIORETENTION MEDIA ROOF DRAIN PIPE; INV. 572.25; REFER TO PLUMBING PLANS I o 0 0 o 0 0 0, PERFORATED 4" PVC CLEANOUT AND OBSERVATION WELL NO SCALE FACE OF EXPOSED /-(FOUNDATION NONWOVEN GEOTEXTILE FABRIC DEPRESSION IN STONE; j ELEV,: 569.75 PROFILE 1'x1' CONCRETE PAD 2' GRAVEL DIAPHRAGM; RIVER COBBLE EQUIV. VDOT #1 AGGREGATE SIZE) BIORETENTION BASIN GRAVEL FLOW SPREADER NO SCALE BIORETENTION SPECIFICATIONS AND NOTES BIORETENTION FILTER SHALL BE CONSTRUCTED, INSPECTED, AND MAINTAINED AS PER VA DEQ STORMWATER DESIGN SPECIFICATION NO. 9 - BIORETENTION, VERSION 2.0, 2013. FILTER MEDIA COMPOSITION SPEC. - FILTER MEDIA TO CONTAIN: 980%-90% SAND • 10%-20% SOIL FINES • 3%-5% ORGANIC MATTER NOTES - THE VOLUME OF FILTER MEDIA BASED ON 110% OF THE PLAN VOLUME, TO ACCOUNT FOR SETTLING OR COMPACTION. FILTER MEDIA TESTING SPEC. - AVAILABLE P BETWEEN L+ AND M PER DCR 2005 NUTRIENT MANAGEMENT CRITERIA. NOTES - THE MEDIA SHALL BE CERTIFIED BY THE SUPPLIER. SOIL SHALL BE PLACED IN LIFTS LESS THAN 12 INCHES AND LIGHTLY COMPACTED (MINIMAL COMPACTIVE EFFORT) BY TAMPING OR ROLLING WITH A HAND -OPERATED LANDSCAPE ROLLER. MULCH LAYER SPEC. - USE AGED, SHREDDED HARDWOOD BARK MULCH.. NOTES - LAY A 3 INCH LAYER ON THE SURFACE OF THE SOIL MEDIA. GEOTEXTILE SPEC. - USE A NON -WOVEN GEOTEXTILE FABRIC WITH A FLOW RATE OF > 110 GAL./MIN./SQ. FT. (E.G., GEOTEX 351 OR EQUIVALENT) NOTES - APPLY ONLY TO THE SIDES AND ABOVE THE UNDERDRAIN. CHOKING LAYER SPEC./NOTES - LAY A 3 INCH LAYER OF CHOKER STONE (VDOT #8 OR #89 WASHED GRAVEL) OVER THE UNDERDRAIN STONE. STONE JACKET FOR UNDERDRAIN AND/OR STORAGE LAYER SPEC. - VDOT #57 STONE SHOULD BE DOUBLE -WASHED AND CLEAN AND FREE OF ALL FINES. NOTES - 12 INCHES FOR THE UNDERDRAIN. UNDERDRAINS, CLEANOUTS, AND OBSERVATION WELLS SPEC. - USE 4 INCH RIGID SCHEDULE 40 PVC PIPE (OR EQUIVALENT CORRUGATED HDPE), WITH 3/8 -INCH PERFORATIONS AT 6 INCHES ON CENTER. NOTES - LAY THE PERFORATED PIPE UNDER THE LENGTH OF THE BIORETENTION CELL, AND INSTALL NONPERFORATED PIPE AS NEEDED TO CONNECT WITH THE STORM DRAIN SYSTEM. EXTEND CLEANOUT PIPES TO THE SURFACE WITH VENTED CAPS AS SHOWN. BIORETENTION INSTALLATION THE (FOLLOWING IS THE CONSTRUCTION SEQUENCE TO PROPERLY INSTALL A BIORETENTION BASIN. THE INSTALLATION OF A BIORETENTION BASUN WILL INCLUDE INTERMEDIATE INSPECTIONS AT CRITICAL STAGES OF CONSTRUCTION TO ENSURE PARTICULAR ELEMENTS OF THE BIORETENTION ARE CONSTRUCTED ACCORDING THE APPROVED PLANS AND SPECIFICATIONS: STEP 1. CONSTRUCTION OF THE BIORETENTION AREA MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE NECESSARY TO DIVERT STORM INLETS WHILE THE BIORETENTION AREA IS BEING CONSTRUCTED. THE (PROPOSED SITE SHOULD BE CHECKED FOR EXISTING UTILITIES PRIOR TO ANY EXCAVATION. STEP 2. THE DESIGNER AND THE INSTALLER SHOULD HAVE A PRECONSTRUCTION MEETING, CHECKING THE BOUNDARIES OF THE CONTRIBUTING DRAINAGE AREA AND THE ACTUAL INLET ELEVATIONS TO ENSURE THEY CONFORM TO ORIGINAL DESIGN. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING PORTIONS OF THE SITE, IT IS QUITE COMMON TO FIND SUBTLE DIFFERENCES IN SITE GRADING, DRAINAGE AND PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FOR THE PROPOSED BIORETENTION AREA. THE DESIGNER SHOULD CLEARLY COMMUNICATE, IN WRITING, ANY PROJECT CHANGES DETERMINED DURING THE PREC:ONSTRUCTION MEETING TO THE INSTALLER AND THE PLAN REVIEW/INSPECTION AUTHORITY. STEP3. TEMPORARY ESC CONTROLS ARE NEEDED DURING CONSTRUCTION OF THE BIORETENTION AREA TO DIVERT STOIRMWATER AWAY FROM THE BIORETENTION AREA UNTIL IT IS COMPLETED. SPECIAL PROTECTION MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING THE CONSTRUCTION PROCESS. STEP' 4. ANY PRE-TREATMENT CELLS SHOULD BE EXCAVATED FIRST AND THEN SEALED TO TRAP SEDIMENTS. STEP' 5. EXCAVATORS OR BACKHOES SHOULD WORK FROM THE SIDES TO EXCAVATE THE BIORETENTION AREA TO ITS APPROPRIATE DESIGN DEPTH AND DIMENSIONS, EXCAVATING EQUIPMENT SHOULD HAVE SCOOPS WITH ADEQUATE REACH SO THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OF THE BIORETENTION AREA. STEP' 6. IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO 12 INCHES TO PROMOTE GREATER INFILTRATION. STEP 7. PLACE GEOTEXTILE FABRIC ON THE SIDES OF THE BIORETENTION AREA WITH A 6 -INCH OVERLAP ON THE SIDES. PLACE THE APPROPRIATE DEPTH OF #57 STONE ON THE BOTTOM, INSTALL THE PERFORATED UNDERDRAIN PIPE, AND ADD 3 INCHES OF CHOKER STONE/PEA GRAVEL AS A FILTER BETWEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. STEP 8. OBTAIN SOIL THE MEDIA FROM A QUALIFIED VENDOR, AND STORE IT ON AN ADJACENT IMPERVIOUS AREA OR PLASTIC SHEETING. AFTER VERIFYING THAT THE MEDIA MEETS THE SPECIFICATIONS, APPLY THE MEDIA IN 12 -INCH LIFTS UNTIL THE DESIRED TOP ELEVATION OF THE BIORETENTION AREA IS ACHIEVED. SIMULATE A RAIN EVENT, WAIT A FEW DAYS TO CHECK FOR SETTLEMENT, AND ADD ADDITIONAL MEDIA, AS NEEDED, TO ACHIEVE THE DESIGN ELEVATION. STEP 9. PREPARE PLANTING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY. INSTALL ANY TEMPORARY IRRIGATION. STEP 10. PLACE THE MULCH SURFACE COVER. STEP 11. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PLAN, AND WATER THEM DURING WEEKS OF NO RAIN FOR THE FIRST TWO MONTHS. CONSTRUCTION INSPECTION INSPECTIONS DURING AND IMMEDIATELY AFTER CONSTRUCTION ARE NEEDED TO ENSURE THAT ALL THE ELEMENTS OF BIORETENTION BASINS ARE BUILT IN ACCORDANCE WITH THESE SPECIFICATIONS. USE A DETAILED INSPECTION CHECKLIST THAT REQUIRES SIGN -OFFS BY QUALIFIED INDIVIDUALS AT CRITICAL STAGES OF CONSTRUCTION AND TO ENSURE THAT THE CONTRACTOR'S INTERPRETATION OF THE PLAN IS CONSISTENT WITH THE DESIGNER'S INTENT. THE FOLLOWING IDENTIFIES THE CRITICAL STAGES OF CONSTRUCTION WHERE AN INTERMEDIATE INSPECTION AND SIGN -OFF BY A QUALIFIED INDIVIDUAL IS REQUIRED SINCE THE ITEMS CAN'T BE VERIFIED AFTER CONSTRUCTION IS COMPLETED. A CONSTRUCTION INSPECTION CHECKLIST THAT INCLUDES CERTIFICATIONS OF INSPECTION AT CRITICAL STAGES IS PROVIDED AT THE END OF THE VA DEQ STORMWATER DESIGN SPECIFICATION NO. 9. THE FOLLOWING REPRESENTS ITEMS THAT ARE FREQUENTLY OVERLOOKED DURING CONSTRUCTION INSPECTION BUT REPRESENT IMPORTANT ELEMENTS FOR ENSURING THE SUCCESS OF THE BIORETENTION FACILITY DURING THE INITIAL BREAK-IN PERIOD. • VERIFY THE PROPER COVERAGE AND DEPTH OF MULCH, VEGETATION, OR SOIL MATTING HAS BEEN ACHIEVED FOLLOWING CONSTRUCTION, BOTH ON THE FILTER BED AND THE SIDE -SLOPES. • INSPECT THE PRE-TREATMENT FORBAYS AND FILTER STRIPS TO VERIFY THAT THEY ARE PROPERLY INSTALLED, STABILIZED, AND WORKING EFFECTIVELY BEFORE OPENING THE FACILITY TO RUNOFF. • CHIECK THAT OUTFALL PROTECTION/ENERGY DISSIPATION MEASURES AT CONCENTRATED INFLOW AND OUTFLOW POINTS ARE STABLE. UPOIN FINAL ACCEPTANCE OF THE FACILITY, LOG THE PRACTICE'S GPS COORDINATES AND SUBMIT THEM FOR ENTRY INTO THE VSMP AUTHORITY'S BMP MAINTENANCE TRACKING DATABASE. FIRST YEAR MAINTENANCE OPERATIONS SUCCESSFUL ESTABLISHMENT OF BIORETENTION AREAS REQUIRES THAT THE FOLLOWING TASKS BE UNDERTAKEN IN THE FIRST YEAR FOLLOWING INSTALLATION: • INITIAL INSPECTIONS. FOR THE FIRST 6 MONTHS FOLLOWING CONSTRUCTION, THE SITE SHOULD BE INSPECTED AT LEAST TWICE AFTER STORM EVENTS THAT EXCEED 1/2 INCH OF RAINFALL. • SPOT RESEEDING. INSPECTORS SHOULD LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA OR AROUND THE BIORETENTION AREA, AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED WITH GRASS COVER. • FERTILIZATION. ONE-TIME, SPOT FERTILIZATION MAY BE NEEDED FOR INITIAL PLANTINGS. • WATERING. WATERING IS NEEDED ONCE A WEEK DURING THE FIRST 2 MONTHS, AND THEN AS NEEDED DURING FIRST GROWING SEASON (APRIL -OCTOBER), DEPENDING ON RAINFALL. • REMOVE AND REPLACE DEAD PLANTS. SINCE UP TO 10% OF THE PLANT STOCK MAY DIE OFF IN THE FIRST YEAR, CONSTRUCTION CONTRACTS SHOULD INCLUDE A 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 85% SURVIVAL OF PLANT MATERIAL AND 100% SURVIVAL OF TREES. MAINTENANCE INSPECTIONS IT IS HIGHLY RECOMMENDED THAT A SPRING MAINTENANCE INSPECTION AND CLEANUP BE CONDUCTED AT EACH BIORETENTION AREA. THE FOLLOWING IS A LIST OF SOME OF THE KEY MAINTENANCE PROBLEMS TO LOOK FOR: • CHECK TO SEE IF 75% TO 90% COVER (MULCH PLUS VEGETATIVE COVER) HAS BEEN ACHIEVED IN THE BED, AND MEASURE THE DEPTH OF THE REMAINING MULCH. • CHECK FOR SEDIMENT BUILDUP AT CURB CUTS, GRAVEL DIAPHRAGMS OR PAVEMENT EDGES THAT PREVENTS FLOW FROM GETTING INTO THE BED, AND CHECK FOR OTHER SIGNS OF BYPASSING. • CHECK FOR ANY WINTER- OR SALT -KILLED VEGETATION, AND REPLACE IT WITH HARDIER SPECIES. • NOTE PRESENCE OF ACCUMULATED SAND, SEDIMENT AND TRASH IN THE PRE-TREATMENT CELL OR FILTER BEDS, AND REMOVE IT. • INSPECT BIORETENTION SIDE SLOPES AND GRASS FILTER STRIPS FOR EVIDENCE OF ANY RILL OR GULLY EROSION, AND REPAIR IT. • CHECK THE BIORETENTION BED FOR EVIDENCE OF MULCH FLOTATION, EXCESSIVE PONDING, DEAD PLANTS OR CONCENTRATED FLOWS, AND TAKE APPROPRIATE REMEDIAL ACTION. • CHECK INFLOW POINTS FOR CLOGGING, AND REMOVE ANY SEDIMENT. • LOOK FOR ANY BARE SOIL OR SEDIMENT SOURCES IN THE CONTRIBUTING DRAINAGE AREA, AND STABILIZE THEM IMMEDIATELY. • 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. EXAMPLE MAINTENANCE INSPECTION CHECKLISTS FOR BIORETENTION AREAS CAN BE ACCESSED IN APPENDIX C OF CHAPTER 9 OF THE VIRGINIA STORMWATER MANAGEMENT HANDBOOK (2010). SUGGESTED ANNUAL MAINTENANCE ACTIVITIES FOR BIORETENTION MAINTENANCE TASKS FREQUENCY • MOWING OF GRASS FILTER STRIPS AND BIORETENTION TURF COVER AT LEAST 4 TIMES A YEAR • SPOT WEEDING, EROSION REPAIR, TRASH REMOVAL, AND MULCH RAKING TWICE DURING GROWING SEASON • ADD REINFORCEMENT PLANTING TO MAINTAIN DESIRED THE VEGETATION DENSITY AS NEEDED • REMOVE INVASIVE PLANTS USING RECOMMENDED CONTROL METHODS AS NEEDED • STABILIZE THE CONTRIBUTING DRAINAGE AREA TO PREVENT EROSION AS NEEDED • SPRING INSPECTION AND CLEANUP ANNUALLY • SUPPLEMENT MULCH TO MAINTAIN A 3 INCH LAYER ANNUALLY • PRUNE TREES AND SHRUBS ANNUALLY • REMOVE SEDIMENT IN PRE-TREATMENT CELLS AND INFLOW POINTS ONCE EVERY 2 TO 3 YEARS • REPLACE THE MULCH LAYER EVERY 3 YEARS SUNRISE SENIOR LIVING TN E COLONNADES 1 j� 1,_j �j L.� J R O ] ECT EXPANSION PROJECT 2600 BARRACKS ROW CHARLOTTESVILLE, VA 22901 CLIENT ARCHITECT STRUCTURAL ENGINEER NOT �0 R CONSTRUCTION NO. DATE DESCRIPTION SITE PLAN SUBMITTAL ��TH 0 C " E. 64BEffBOLTON y Lie. No. 051495 '� �sIONAL �" Nr+►t DRAWING NUMBER C5*2 SUNRISE SENIOR LIVING 7902 WESTPARK DRIVE T (703) 273.7500 WWW.SUNRISEENIORLIVING.COM PROJECT MANAGER STUDIOTWENTYSEVENARCHITECTURE 1600 K STREET NW, SUITE 800 WASHINGTON, DC 20006 T (202) 939.0027 / F (202) 939.0270 WWW.STUD1027ARCH.COM CIVIL ENGINEER KEAST & HOOD CO.�' 113 4TH STREET NE, SUITE 100 CHARLOTTESVILLE, VA 22902 T (434) 260-8181 WWW.KEASTHOOD.COM MEP ENGINEER DRAWING TITLE BIORETENTION DETAILS DRAWING TYPE CIVIL HIMES ASSOCIATES, LTD 0 T (703) 59D 1.7272 / DRIVEWASHINGTON,O (703) 591.7284 WWW.HIMESASSOCIATES.COM DRAPER ADEN ASSOCIATES 110 AVON STREET CHARLOTTESVILLE, VA 22902 T (434) 295-0700 WWW.DAA.COM _ _ INTERFACE ENGINEERING 270 C 20036 T (202) 370.9555 WWW.INTERFACEENGINEERING.COM _ DRAWING SCALE NOT TO SCALE DRAWING DATE SEPTEMBER 21, 2018 PROJECT NUMBER 18060111 - 020301