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HomeMy WebLinkAboutWPO201400096 Plan - VSMP WPO VSMP 2020-01-03V 2019 - 30 SCALE, LLC STONEFIELD BLOCK s �' ► i►,An 14► ► ► 1 / S I ONEEIEIu BLOCK iviA SCALE: 1 "=400' VICINITY MAP SCALE: 1"=2,000' ALBEMARLE COUNTYI L MAP SCALE: 1"=100' REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 G� c, Ivt(GN:;E - F. MYERS L}c. No. 33028 # MAJOR SITE PLAN AMENDMENT SDP 2019-00012 CORRESPONDING SKEET NUMBER (UNDER SIMULTANEOUSo� COUNTY ENGINEERING REVIEW) ` SS✓ONALlC� SHEET INDEX Sheet Title 1 COVER SHEET 24 2 CONSTRUCTION NOTES 2 3 OVERALL SITE PLAN 6 4 EXISTING CONDITIONS & DEMO PLAN 7 5 LAYOUT PLAN 6 STORMWATER MANAGEMENT PLAN 7 WATER QUALITY COMPLIANCE AND FILTERRA DETAILS 1z 8 STORM SEWER PROFILES AND COMPUTATIONS 9 EROSION AND SEDIMENT CONTROL PLAN - PHASE 1 10 EROSION AND SEDIMENT CONTROL PLAN - PHASE 2 11 EROSION AND SEDIMENT CONTROL NARRATIVE 12 EROSION AND SEDIMENT CONTROL DETAILS 13 WPO 2014-00096 AMENDMENT - APPROVED 6-26-15 - SHEET 1 OF 3 14 WPO 2014-00096 AMENDMENT -,APPROVED 6-26-15 e SHEET 2 OF 3 15 WPO 2014-00096 AMENDMENT - APPROVED 6-26-15 - SHEET 3 OF 3 25 16 GEOTECHNICAL ENGINEERING NOTES t EXISTING VSMP GENERAL CONSTRUCTION PERMIT NO: VAR101551 ORIGINAL DISTURBED AREA: 5.65 AC. REVISED DISTURBED AREA WITH THIS APPLICATION: 2.83 A�- THIS AMENDMENT INCLUDES THE RECONFIGURATION OF THREE(3) OF THE FIVE (5) APPROVED FILTERRA STRUCTURES IN PHASE TWO AS NEEDED TO ALIGN WITH THE REVISED SITE LAYOUT. ONE OF THESE FILTERRAS (STRUCTURE 244.1) WILL NEED TO BE REMOVED AND A LARGER FILTERRA (PROPOSED STRUCTURE 6A) WILL NEED TO BE INSTALLED SINCE IT WILL INTERCEPT A LARGER DRAINAGE AREA. STRUCTURE 244.1 MAY BE ABLE TO RELOCATED AND SERVE AS FILTERRA STRUCTURE 4A. AS SHOWN ON THE APPROVED WPO PLANS (WPO 2014-00096), WATER QUALITY CONTROL FOR BLOCK D2 IS MET BY A COMBINATION OF EXISTING DOWNSTREAM BMP FACILTIES (A VORTECHNICS STRUCTURE AND A STORMFILTER FACILITY), AND SUPPLEMENTED BY ONSITE FILTERRA BOX PLANTER STRUCTURES TO MEETTHE REMAINING PHOSPHORUS REMOVAL REQUIREMENTS. THE APPROPRIATE BMP WORKSHEETS HAVE BEEN UPDATED AND INCLUDED WITH THIS VSMP AMENDMENT. STORMWATER MANAGEMENT (WATER QUANTITY CONTROL) FOR THE STONEFIELD DEVELOPMENT HAS BEEN ADDRESSED BY THE INSTALLATION OF TWO 10'-DIAMETER CORRUGATED METAL PIPE SWM FACILITIES THAT WERE INSTALLED PER THE ALBEMARLE PLACE SWM PLAN AMENDMENT #4 (WPO 2010-00023). ONE SYSTEM PROVIDES DETENTION FOR THE NORTHERN DRAINAGE SHED, AND THE OTHER SYSTEM DETAINS THE SOUTHERN SHED. BLOCK D2 DRAINS VIA A 4211-DIAMETER STORM SEWER PIPE TOWARDS THE NORTHERN SWM FACILITY. THE FACILITIES WERE DESIGNED FOR THE MAJORITY OF THE DEVELOPMENT TO BE IMPERVIOUS AS SHOWN ON THE WPO 2010-00023. THE AMENDMENT REDUCES THE IMPERVIOUS AREA THAT WAS ORIGINALLY PROPOSED WITH WPO 2014-00096, AND THEREFORE STORMWATER MANAGEMENT - WATER QUANTITY CONTROL REQUIREMENTS ARE SATISFIED. 90, ilk, Ly THE OWNER/DEVELOPER IS PROPOSING TO AMEND THE APPROVED SITE PLAN SDP 2014-00070 ENTITLED "STONEFIELD -BLOCK D2" TO VACATE 55 PLATTED TOWNHOUSE LOTS AND TO CONSTRUCT 160 APARTMENTS AND 20,000-SF OF COMMERCIAL SPACE IN A SIX -STORY MIXED -USE BUILDING. THERE WILL ALSO BE AN APPROXIMATE 6,000-SF LOBBY WITH A FITNESS CENTER FOR THE APARTMENTS AND GARAGE PARKING ON LEVEL 1. A SECOND LEVEL OF PARKING (PARKING LEVEL 2) WILL BE PROVIDED ABOVE PARKING LEVEL 1. A PARKING REDUCTION HAS BEEN APPROVED AND IS INCLUDED ON SHEET 5 OF THE SITE PLAN. THE PRIMARY JUSTIFICATION FOR THE PARKING REDUCTION IS THATTHE RESIDENTIAL AND COMMERCIAL USES HAVE OFFSETTING PEAK -HOUR PARKING DEMANDS, WHICH, AMONG OTHER FACTORS, SUPPORT A 35% PARKING REDUCTION. A SPECIAL EXCEPTION HAS ALSO BEEN APPROVED TO ALLOW THE 6-STORY BUILDING. THE CODE OF DEVELOPMENT PRESCRIBES A FIVE -STORY MAXIMUM BUILDING HEIGHT IN BLOCK D. THE DEVELOPER IS PROPOSING TO CONSTRUCT A PEDESTRIAN/BICYCLE RAMP CONNECTION TO THE NORTH TO PROVIDE DIRECT, NON -VEHICULAR ACCESS FOR THE ADJACENT RESIDENTS ON COMMONWEALTH DRIVE. APPROVED by the A;beinar!C% 'C'c ilty C0(T MUi ItVr CVCIopniertt 'Dcparrment Date I���� File owner: THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com !J �I fi u Lu I 'A a k F r s , 1 1 � q' o (4 :_::Y ®Lu >4 a CL s ; N i (;?s 'Law LMLF uAll>>V s s r 3 � t.i 3 Lic. No. 33028 Q 12116I2019 a'11ss19NAL © 2019 - 30 SCALE, LLC t r w,, ■ i n, r__ t■ j `,i ■ ADOPTED BYTHE COUNTY OF ALBEMARLE ON DECEMBER, 2003 AS PART OF ZMA # 01-07 AND AMENDED ON AUGUST 4, 2010 AS PART OF ZMA # 08-003. WAIVERS TO THE ZONING ORDINANCE, CHAPTER 18: UNDER THE AUTHORITY GRANTED IN SECTION 8.2, THE BOARD OF SUPERVISORS HAS WAIVED, VARIED OR ACCEPTED SUBSTITUTIONS TO THE FOLLOWING SECTIONS: 4.2.3 LOCATION OF STRUCTURES AND IMPROVEMENTS: THE REQUIREMENTS OF SECTION 4.2.3 ARE WAIVED, CONDITIONAL UPON APPROVAL OF AN EROSION AND SEDIMENT CONTROL PERMIT THAT MEETS THE REQUIREMENTS OF SECTION 8.5.5.4(b). 4.3 (a&b) TREE CUTTING: THE REQUIREMENTS OF SECTION 4.3 (a&b) ARE WAIVED, CONDITIONAL UPON APPROVAL OF AN EROSION AND SEDIMENT CONTROL PERMIT THAT MEETS THE REQUIREMENTS OF SECTION 8.5.5.4(b). 4.6.1 FRONTAGE AND LOT WIDTH MEASUREMENTS: 4.6.2 LOTS, DETERMINATION OF LOT FRONT: 4.6.6 LOT ACCESS REQUIREMENTS: THE REQUIREMENTS OF SECTIONS 4.6.1, 4.6.2 & 4.6.6 ARE WAIVED UNDER THE FOLLOWING CONDITIONS: 1.) ACCESS WILL BE MAINTAINED TO THE INDIVIDUAL LOTS THROUGH ONE OF THE FOLLOWING OPTIONS: A.) LOTS MUST FRONT A PUBLIC STREET AND BE SERVED WITH DIRECT ACCESS TO A PUBLIC STREET, OR B.) LOTS MUST FRONT A PRIVATE STREET AND BE SERVED WITH DIRECT ACCESS TO A PRIVATE STREET, WHICH IS BUILT TO THE STANDARDS SET FORTH IN THE SUBDIVISION ORDINANCE; PROVIDED THAT ANY SUCH STANDARDS MAY BE WAIVED OR MODIFIED AS EXPRESSLY PROM DIED IN THE SUBDIVISION ORDINANCE. (NOTE: AN EASEMENT SHALL BE REQUIRED TO ALLOW THE GENERAL PUBLIC THE USE OF THE PRIVATE STREETS AS A RIGHT-OF-WAY). 2.) WHERE PARKING FOR A LOT IS NOT ON -SITE OR DIRECTLY ADJACENT TO THE LOT ON A PUBLIC OR PRIVATE STREET (I.E., A PARKING GARAGE), THE OWNERS OF THE LOTS WHERE PARKING IS PROVIDED IN A GARAGE SHALL HAVE PERPETUAL ACCESS TO THE PARKING GARAGES AS WELL AS A PERPETUAL RIGHT TO PARK CARS IN THE GARAGE. THE RIGHTS DESCRIBED HEREIN SHALL RUN WITH THE LAND. THE DEED, DECLARATION OR OTHER DOCUMENT ESTABLISHING THE RIGHTS DESCRIBED HEREIN SHALL BE SUBJECT TO REVIEW AND APPROVAL BYTHE COUNTYATTORNEY. 3.) ALL STREETS AND ACCESS WAYS DESCRIBED ABOVE SHALL BE REQUIRED TO BE BONDED AS PART OF THE SITE PLAN OR SUBDIVISION PLAT. 4.6.3 LOTS, YARDS ADJACENT TO STREET: 4.6.4 REAR YARDS ON INTERIOR STREETS: 4.6.5 SIDE YARDS ON LOTS: THE REQUIREMENTS OF SECTIONS 4.6.3, 4.6.4 & 4.6.5 ARE WAIVED AND REPLACED WITH THE BUILD -TO LINE STANDARDS ESTABLISHED IN THE CODE OF DEVELOPMENT. 4.7 OPEN SPACE: THE REQUIREMENTS OF SECTION 4.7 ARE WAIVED AND REPLACED WITH AMENITIES AND IMPORTANT FEATURES BY BLOCK THAT ARE ESTABLISHED IN THE CODE OF DEVELOPMENT. 4.11.1 COVERED PORCHES, BALCONIES, CHIMNEYS AND LIKE FEATURES: THE REQUIREMENTS OF SECTION 4.11.1 ARE WAIVED UNDER THE FOLLOWING CONDITIONS: 1.) THE DIRECTOR OF PLANNING AND COMMUNITY DEVELOPMENT MAYAPPROVE VARIATIONS FROM THE REQUIREMENTS OF SECTION 4.11.1 USING THE CRITERIA SET FORTH IN SECTION 8.5.5,3(c), IF THE APPLICANT FOLLOWS THE PROCEDURES ESTABLISHED IN SECTION 8.5.5.3(b). 4.15.5(aa) SIGNS AUTHORIZED BY SPECIAL USE PERMIT: THE REQUIREMENT OF SECTION 4.15.5(a) OF A SPECIAL USE PERMIT FOR OFF -SITE SIGNS IS WAIVED. OFF -SITE SIGNS WILL BE ALLOWED BY -RIGHT. 4.15.11 REGULATIONS APPLICABLE IN THE PUD. DCD. AND NMD ZONING DISTRICTS: 1.) THE REQUIREMENT OF SECTION 4.15.11 FOR SIGNS ARE WAIVED AND REPLACED WITH THE SIGN REGULATIONS IN SECTION 4.15.13 HIGHWAY COMMERCIAL (HC), PLANNED DEVELOPMENT SHOP SHOPPING CENTER (PDSC) AND PLANNED DEVELOPMENT MIXED COMMERCIAL (PDMC). 2.) THE REQUIREMENT OF SECTION 4.15.11 FOR A MAXIMUM HEIGHT OF WALL SIGNAGE OF 30 FEET HAS BEEN CONDITIONALLY REPLACED WITH A MAXIMUM SIGNAGE HEIGHT OF 58 FEET. THE CONDITION IS THAT ANYSIGN OVER 30 FEET SHALL BE SUBJECT TO ARB APPROVAL. 4.16 RECREATION REGULATIONS: THE REQUIREMENTS OF SECTION 4.16 ARE MODIFIED AND REPLACED WITH THE AMENITIES AND IMPORTANT FEATURES BY BLOCK THAT ARE ESTABLISHED IN THE CODE OF DEVELOPMENT. 5.1.16 a&e) SWIMMING, GOLF & TENNIS CLUBS: THE REQUIREMENTS OF SECTION 5.1.16 (a&e) ARE WAIVED AND REPLACED WITH THE AMENITIES AND IMPORTANT FEATURES BY BLOCK THAT ARE ESTABLISHED IN THE CODE OF DEVELOPMENT. 5.1.21 DWELLING IN COMMERCIAL AND INDUSTRIAL DISTRICTS: THE REQUIREMENTS OF SECTION 5,1.21 ARE WAIVED. 5.1.24 SUBORDINATE RETAIL SALES: THE REQUIREMENTS OF SECTION 5.1.24 ARE WAIVED AND REPLACED WITH THE USES AND STANDARDS ESTABLISHED IN THE CODE OF DEVELOPMENT. 32.4.1 PRELIMINARY CONFERENCE WITH STAFF: THE REQUIREMENTS OF SECTION 32.4.1 ARE WAIVED. 32.7.2.8 SIDEWALKS: THE REQUIREMENTS OF SECTION 32.7.2.8 ARE WAIVED AND REPLACED WITH THE USES AND STANDARDS ESTABLISHED IN THE CODE OF DEVELOPMENT. ZONING DETERMINATION BY THE COUNTY OF ALBEMARLE ON DECEMBER 29, 2010 DETERMINATIONS ON THE APPLICATION OF THE ZONING ORDINANCE, CHAPTER 18: UNDER THE AUTHORITY GRANTED THE ZONING ADMINISTRATOR THE FOLLOWING SUBSTITUTIONS HAVE BEEN ACCEPTED: 4.12.6 REQUIREMENT FOR MINIMUM NUMBER OF PARKING SPACES: IT HAS BEEN DETERMINED THAT THE THEATER PARKING MAY BE CALCULATED AS PART OF THE SHOPPING CENTER PARKING CALCULATION INSTEAD OF USING THE SEPARATE THEATER PARKING REQUIREMENTS SPECIFIED IN SECTION 4.12.6. THIS DETERMINATION IS BASED ON THE CURRENT LOCATION OF THE CINEMA WITHIN THE MIXED USE TOWN CENTER AREA. APPROVED BY THE BOARD OF SUPERVISORS OF ALBEMARLE ON SEPTEMBER 11, 2013 VARIATIONS GRANTED TO ALLOW FOR FOLLOWING: 1. THE BELOW LISTED ELEMENTS, A THROUGH D, THAT VARY FROM THE ZMA APPLICATION PLAN. A. THE MODIFICATION OF THE BLOCK F AND BLOCK G BOUNDARIES. B. THE LOCATION OF THE NORTH -SOUTH ALIGNMENT AND THE GEOMETRY OF DISTRICT AVENUE THROUGH BLOCK F AND BLOCK G OF THE PROJECT. C. THE RELOCATION OF THE TWO (2) 'FUTURE EXTENSION" CONNECTIONS POINTS TO THE NORTH AND THE ONE (1) 'FUTURE EXTENSION" CONNECTION POINT TO THE SOUTH. D. THE BUILDING LOCATION, ORIENTATION, AND ALLOCATION OF SQUARE FOOTAGE FOR THE FACILITY TO BE LOCATED ON BLOCK F. 2. THE MODIFICATION OF THE LOCATION OF THE PLAZA AREA AND ELIMINATION OF THE 'CAFE" (AS SUCH ARE DEPICTED WITHIN BLOCK F ON THE ZMA APPLICATION PLAN). IN LIEU OF SUCH IMPROVEMENTS, APPLICANT PROPOSES TO CONSTRUCT ENHANCED PEDESTRIAN CORRIDOR. NOTE: A ZONING MAP AMENDMENT REQUEST WAS SUBMITTED TO THE COUNTY OF ALBEMARLE ON JUNE 14, 2013. THIS REQUEST IS TO AMEND ZMA 2011-00007 THROUGH THE MODIFICATION OF THE "CODE OF DEVELOPMENT" TO ALLOW FOR AN ANCILLARY FUELING FACILITY WITH CANOPY. i 9 'ma ■ 1-. ■ • 0 1k S_ 16-1 1, to] ■, _ RIP AL sIllivilAf will . a] 6 Lam M_ TA's, 1- SOMILOR, Ali= 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 PAVING, DRAINAGE RELATED 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. S. 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 ALBEMARLE COUNTY DIRECTOR OF ENGINEERING, OR THE DIRECTOR'S DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM TO THE LATEST EDITION OF THE MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES (MUTCD). THE CURRENT EDITIONS AS OF THE DATE OF THIS PLAN SET ARE MUTCD, 2009 EDITION, INCORPORATING REVISIONS 1 AND 2, DATED MAY 2012, AND THE VIRGINIA SUPPLEMENT TO THE MUTCD, 2011 EDITION, INCLUDING REVISION 1 DATED 30 SEPTEMBER 2013. 8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III AND CONFORM TO ASTM C-76. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1.926). GENERAL CONSTRUCTION NOTES FOR STREETS 1. CONSTRUCTION INSPECTION OF ALL PROPOSED ROADS WITHIN THE DEVELOPMENT WILL BE MADE BY THE COUNTY. THE CONTRACTOR MUST NOTIFY THE DEPARTMENT OF COMMUNITY DEVELOPMENT (2965832) 48 HOURS IN ADVANCE OF THE START OF CONSTRUCTION, 2. UPON COMPLETION OF FINE GRADING AND PREPARATION OF THE ROADBED SUBGRADE, THE CONTRACTOR SHALL HAVE CBR TESTS PERFORMED ON THE SUBGRADE SOIL. THREE (3) COPIES OF THE TEST RESULTS SHALL BE SUBMITTED TO THE COUNTY. IF A SUBGRADE SOIL CBR OF 10 OR GREATER IS NOT OBTAINABLE, A REVISED PAVEMENT DESIGN SHALL BE MADE BY THE DESIGN ENGINEER AND SUBMITTED WITH THE TEST RESULTS FOR APPROVAL. 3. SURFACE DRAINAGE AND PIPE DISCHARGE MUST BE RETAINED WITHIN THE PUBLIC RIGHT-OF-WAY OR WITHIN EASEMENTS PRIOR TO ACCEPTANCE BY THE COUNTY. ALL DRAINAGE OUTFALL EASEMENTS ARE TO BE EXTENDED TO A BOUNDARY LINE OR A NATURAL WATERCOURSE. 4. GUARDRAIL LOCATIONS ARE APPROXIMATE. EXACT LENGTH, LOCATION AND APPROPRIATE END TREATMENTS WILL BE FIELD VERIFIED AT THE TIME OF CONSTRUCTION. ADDITIONAL GUARDRAIL MAY BE REQUIRED AT LOCATIONS NOT SHOWN WHEN, IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY. WHEN GUARDRAIL IS REQUIRED, IT SHALL BE INSTALLED FOUR (4) FEET OFFSET FROM THE EDGE OF PAVEMENT TO THE FACE OF GUARDRAIL, AND ROADWAY SHOULDER WIDTHS SHALL BE INCREASED TO SEVEN (7) FEET. 5. WHERE URBAN CROSS SECTIONS ARE INSTALLED, ALL RESIDENTIAL DRIVEWAY ENTRANCES SHALL CONFORM TO VDOT CG-9(A, B OR C). 6. WHERE RURAL CROSS SECTIONS ARE INSTALLED, ALL RESIDENTIAL DRIVEWAY ENTRANCES SHALL CONFORM TO VDOT STANDARD PE-1. 7. COMPLIANCE WITH THE MINIMUM PAVEMENT WIDTH, SHOULDER WIDTH AND DITCH SECTIONS, AS SHOWN ON THE TYPICAL PAVEMENT SECTION DETAIL, SHALL BE STRICTLY ADHERED TO. 8. ROAD PLAN APPROVAL FOR SUBDIVISIONS IS SUBJECT TO FINAL SUBDIVISION PLAT VALIDATION. SHOULD THE FINAL PLAT FOR THIS PROJECT EXPIRE PRIOR TO SIGNING AND RECORDATION, THEN APPROVAL OF THESE PLANS SHALL BE NULL AND VOID. 9. ALL SIGNS OR OTHER REGULATORY DEVICES SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES AND THE ALBEMARLE COUNTY ROAD NAMING AND PROPERTY NUMBERING ORDINANCE AND MANUAL. 10. TRAFFIC CONTROL OR OTHER REGULATORY SIGNS OR BARRICADES SHALL BE INSTALLED BY THE DEVELOPER WHEN, IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, THEY ARE DEEMED NECESSARY IN ORDER TO PROVIDE SAFE AND CONVENIENT ACCESS. 11. THE SPEED LIMITS TO BE POSTED ON SPEED LIMIT SIGNS ARE 5 MPH BELOW THE DESIGN SPEED, OR AS DETERMINED BY VDOT FOR PUBLIC ROADS. 12. VDOT STANDARD CD-1 OR CD-2 CROSS -DRAINS UNDER TO BE INSTALLED UNDER THE SUBBASE MATERIAL AT ALL CUT AND FILL TRANSITIONS AND GRADE SAG POINTS AS SHOWN ON THE ROAD PROFILES. 13. A VIDEO CAMERA INSPECTION IS REQUIRED FOR ALL STORM SEWERS AND CULVERTS THAT ARE DEEMED INACCESSIBLE TO VDOT OR COUNTY INSPECTIONS. THE VIDEO INSPECTION SHALL BE CONDUCTED IN ACCORDANCE WITH VDOT'S VIDEO CAMERA INSPECTION PROCEDURE AND WITH A VDOT OR COUNTY INSPECTOR PRESENT, 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 TI M ES. S. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFFPRODUCING 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 BETAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7: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/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BYTHE 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 RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL, ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 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. 1. EXISTING MANHOLE FRAMES AND COVERS, VALVE BOXES AND COVERS, HAND HOLES, PEDESTALS, ETC. THAT ARE TO REMAIN, SHALL BE ADJUSTED OR RECONSTRUCTED, AS NECESSARY, TO MATCH FINISHED GRADES AT NO ADDITIONAL COST FROM THE BASE BID. 2. ACCESSIBLE PARKING SPACES AND ROUTES SHALL COMPLY WITH THE 2010 ADA STANDARDS FOR ACCESSIBLE DESIGN DATED 15 SEPTEMBER 2010, OR THE LATEST EDITION IF AVAILABLE. THE PAVEMENT SLOPE WITHIN AN ADA ACCESSIBLE PARKING SPACE SHALL NOT EXCEED A MAXIMUM OF 2,0% IN ANY DIRECTION. 3. AN ACCESSIBLE ROUTE MAY NOT EXCEED A MAXIMUM RUNNING SLOPE OF 5% UNLESS A RAMP COMPLYING WITH ADA STANDARDS 15 PROVIDED. 4. PAVEMENT REPAIR IN EXISTING STREETS SHALL BE PERFORMED IN ACCORDANCE WITH VDOT AND ALBEMARLE COUNTY STANDARDS AND SPECIFICATIONS. 5. ALL PIPES SHOWN AS HIGH -DENSITY POLYETHYLENE PIPE (HDPE) SHALL CONFORM TO AASHTO M294 (TYPE S) SMOOTH WALL INTERIOR PIPE, MATERIALS AND INSTALLATION SHALL BE IN ACCORDANCE WITH VDOT ROAD AND BRIDGE STANDARDS AND SPECIFICATIONS. 6. STREET SIGNS SHALL BE INSTALLED BASED ON THE EXISTING SIGN CONFIGURATION ON THE COMPLETED PORTION OF THE STONEFIELD DEVELOPMENT 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS FOR CONSTRUCTION. 2. PRIOR TO COMMENCEMENT OF CONSTRUCTION, THE CONTRACTOR SHALL VERIFY ALL PLAN DIMENSIONS, EXISTING UTILITY SIZES AND LOCATION, EXISTING TOPOGRAPHY AND OTHER SITE CONDITIONS ARE IN CONFORMANCE WITH THE PLANS. IF ANY DISCREPANCIES ARE FOUND, THE CONTRACTOR SHALL IMMEDIATELY NOTIFY THE OWNER AND ENGINEER TO DETERMINE THE COURSE OF ACTION TO ADDRESS THE DISCREPANCY. THE CONTRACTOR WILL BE CONSIDERED TO HAVE PROCEEDED AT THEIR OWN RISK AND EXPENSE IF THEY DO NOT NOTIFY THE OWNER AND ENGINEER TO SECURE GUIDANCE ON A CORRECTIVE ACTION. 3. THE CONTRACTOR SHALL COORDINATE ALL WORK WITHIN EXISTING EASEMENTS WITH THE OWNING UTILITY COMPANY A MINIMUM OF 30 DAYS PRIOR TO BEGINNING WORK IN THE EASEMENT, AND 30 DAYS PRIOR TO BEGINNING OF SITEWORK IF ADDITIONAL LEAD TIME WILL BE REQUIRED. CONTRACTOR TO ENSURE THAT THE GUIDELINES AND CONSTRUCTION STANDARDS OF THE OWNING UTILITY COMPANY HAVE BEEN MET. 4. CONTRACTOR IS TO ENSURE THAT ALL UTILITIES, INCLUDING WATER, SEWER, STORM, UNDERDRAINS, GAS, ELECTRIC, TELEPHONE, CABLE, AND ANY OTHER QUASI -PUBLIC UTILITIES ARE IN PLACE PRIOR TO CONSTRUCTION OF SUBBASE AND/OR PAVING. 5. CONTRACTOR TO PROVIDE A MINIMUM 5-FOOT HORIZONTAL SEPARATION FROM WATERMAINS AND SANITARY SEWER MAINS WHEN INSTALLING PROPOSED UNDERGROUND DRY UTILITIES, INCLUDING ELECTRIC, TELEPHONE, CABLE AND GAS. 6. THE CONTRACTOR SHALL BE AWARE AND IN POSSESSION OF ANY LETTERS OF PERMISSION FOR OFFSITE CONSTRUCTION ASSOCIATED WITH THE PLAN. THE CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATING THE MEANS AND METHODS OF CONSTRUCTION WORK WITH THE OWNER AND THE OFFSITE PROPERTY OWNER. 7. THE CONTRACTOR IS RESPONSIBLE FOR THE RELOCATION OF ALL EXISTING UTILITIES THAT ARE IN CONFLICT WITH THE WORK, INCLUDING EXISTING UTILITY POLES AND GUY WIRES. 8. CONTRACTOR TO PROVIDE CERTIFIED SHOP DRAWINGS FOR ENGINEER REVIEW AND APPROVAL FOR SITE INFRASTRUCTURE PRIOR TO ORDERING STRUCTURES, ORDERING STRUCTURES PRIOR TO ENGINEER REVIEW AND APPROVAL SHALL BE DONE AT THE RISK OF THE CONTRACTOR. 9, CONTRACTOR SHALL VISUALLY INSPECT CONCRETE FORMS PRIOR TO PLACEMENT OF CONCRETE. IN THE EVENT THAT ADJUSTMENTS ARE NEEDED, CONTRACTOR TO NOTIFY ENGINEER PRIOR TO PLACING OF CONCRETE FOR FIELD REVIEW AND AGREEMENT ON ANY FIELD REVISION THAT MAY BE REQUIRED. ENGINEER TO PROVIDE REASONABLE AND TIMELY RESPONSE TO ALL INQUIRIES MADE BY THE CONTRACTOR. 10. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL TRAFFIC CONTROL DURING CONSTRUCTION, INCLUDING MAINTAINING UNOBSTRUCTED ACCESS FOR THE RESIDENTS OF THE PHASE 1 TOWNHOUSES AT STONEFIELD AT ALLTIMES DURING CONSTRUCTION. 11. ALL DAMAGED EXISTING CURB, GUTTER, AND SIDEWALK SHALL BE REPAIRED PRIOR TO ACCEPTANCE OF COMPLETED IMPROVEMENTS. 12. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING THE ENGINEER IMMEDIATELY IF UNKNOWN UTILITIES THAT IMPACTTHE CONSTRUCTION ARE DISCOVERED. 13. CONTRACTOR SHALL COMPLY WITH FENCING AND TREE PRESERVATION SIGNAGE REQUIRED BY ALBEMARLE COUNTY CODE. 14. CONTRACTOR SHALL COMPLY WITH ALL WETLAND PERMIT REQUIREMENTS AS SPECIFIED BY THE ARMY CORPS OF ENGINEERS AND/OR THE VIRGINIA DEQ. 15. CONTRACTOR SHALL RESTORE ALL DISTURBED AREAS TO AN EQUAL OR BETTER CONDITION THAN EXISTED BEFORE CONSTRUCTION. 16. CONTRACTOR TO REMOVE ALL CONSTRUCTION DEBRIS FOLLOWING COMPLETION OF CONSTRUCTION AND IMMEDIATELY REMOVE CONSTRUCTION DEBRIS AND MUD THAT HAS BEEN TRACKED ON TO THE SURROUNDING PROPERTIES. 17. CONTACTOR SHALL BE LIABLE FOR REPAIR OF ANY DAMAGES ON PUBLIC OR PRIVATE PROPERTY CAUSED BY HIS CONSTRUCTION ACTIVITY, INCLUDING CURBS, GUTTER PAN, ASPHALT AND CONCRETE PAVEMENT. 18. CONTRACTOR SHALL BE RESPONSIBLE FOR THE STORAGE OF LANDSCAPE MATERIALS PRIOR TO PLANTING AND PROVIDE A ONE-YEAR GUARANTEE ON ALL VEGETATION. 1. THE STONEFIELD DEVELOPMENT IS GRANDFATHERED FROM THE TECHNICAL CRITERIA PART IIB OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATION PER 9VAC25-870-48. THE DEVELOPMENT IS SUBJECT TO THE TECHNICAL CRITERIA PART IIC OF THE VSMP REGULATION PER 9VAC25-870-93 ET SEQ. 2. CALCULATIONS AND DETAILS FOR THE DOWNSTREAM UNDERGROUND DETENTION SYSTEM HAVE BEEN PROVIDED WITH WPQ 2010-0023, ENTITLED, ALBEMARLE PLACE/STORMWATER MANAGEMENT PLAN AMENDMENT NOA. 3. THE IMPERVIOUS AREA IN BLOCK D2 HAS DECREASED WITH THIS MAJOR SITE PLAN AMENDMENT, SO THERE ARE NO ADDITIONAL WATER QUALITY OR QUANTITY REQUIREMENTS ABOVE WHAT IS APPROVED ON WPO 2014-00096, ENTITLED, STONEFIELD - BLOCK D2 - VSMP AMENDMENT. REFER TO VSMP PROJECT NARRATIVE FOR MORE DETAILED INFORMATION. 4. STORMFILTER AND VORTECHS UNITS HAVE BEEN CONSTRUCTED DOWNSTREAM FOR WATER QUALITY AND PROVIDE A 60% POLLUTANT REMOVAL RATE IN 5. PROPOSED FILTERRA UNITS SHOWN FOR SUPPLEMENTAL WATER QUALITY PROVIDE A 74% POLLUTANT REMOVAL RATE IN ACCORDANCE WITH MINIMUM STANDARD 3.11C OF THE VIRGINIA STORMWATER MANAGEMENT HANDBOOK, TECHNICAL BULLETIN #6, DATED 11/1/2002. GEOTECHNICAL ENGINEERING REPORT ALL EARTHWORK SHALL BE PERFORMED IN ACCORDANCE WITH THESE PLANS AND SPECIFICATIONS AND IN ACCORDANCE WITH THE GEOTECHNICAL ENGINEERING REPORT PREPARED BY ECS, LTD, DATED MAY 8, 2009, WHICH INCLUDES REFERENCE TO FOUR GEOTECHNICAL ENGINEERING STUDIES PERFORMED BY SCHNABEL ENGINEERING SOUTH, LLC FOR THE STONEFIELD DEVELOPMENT. THE EARTHWORK REQUIREMENTS ARE INCLUDED AS PART OF THIS PLAN SET. 1. RETAINING WALLS GREATER THAN 3 FEET IN HEIGHT REQUIRE A SEPARATE BUILDING PERMIT. WALLS EXCEEDING 4 FEET IN HEIGHT REQUIRE A STAMPED ENGINEERED DESIGN ALSO. 2. ACCESSIBLE PARKING SPACES AND ACCESS AISLES SHALL NOT HAVE A SURFACE SLOPE GREATER THAN 1:48. ACCESS AISLES SHALL BE AT THE SAME LEVEL AS THE PARKING SPACES THEY SERVE. 3. ALL WATER LINES, SEWER LINES, AND FIE LINES FROM THE MAIN TO THE STRUCTURE MUST HAVE A VISUAL INSPECTION PERFORMED BY THE BUILDING DEPARTMENT. 4. ALL ROOF DRAINS HALL DISCHARGE IN A MANNER NOT TO CAUSE A PUBIC NUISANCE AND NOT OVER SIDEWALKS. REVISIONS DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 owner: THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@)30scale.com web: www.30scale.com ow-EffalAwAl 0 m L F. N S Lic. No. 33028 12/16/201 Cl �sS � O 1V A L �'�� O 2019 - 30 SCALE, LLC CURVE TABLE CURVE # LENGTH RADIUS DELTA CHORD CHORD BEARING C1 59.15' 1112.92' 003'02'42" 59.14' S47'32'51"E C2 140.18' 1105.92' 0071545" 140.09' S3847'58"E C3 92.37' 226.50' 023'22'01" 91.73' S23'40'12"W C4 47.02' 178.50' 015'05'39" 46.89' N19'32'01"E C5 22.03' 119.50' 010'33'50" 22.00' N32'21'46"E C6 18.34' 24.50' 042-53-21" 17.91' N59'0522"E LINE TABLE LINE # BEARING LENGTH L1 N5810'32"W 14.43' L2 N49'04'12"W 79.09' L3 S28'23'17"W 45.35' L4 S4235'36"W 43.64' L5 S35'21'13"W 23.00' L6 S2710'48"W 38.69' L7 S09 `38; 47"E 12.73 � L8 S35 21 13 W 20.53 L9 S37°38'41 "W 21.75' NOTE: BOUNDARY INFORMATION SHOWN HEREON TAKEN FROM PLAT PREPARED BY WW ASSOCIATES, DATED 7/6/2015 AND RECORDED AT DB 4716 PG 743. CURVE TABLE - PHASE LINE CURVE # LENGTH RADIUS DELTA CHORD CHORD BEARING PLC1 15.85' 10.00' 90.83 14.24 N79'56'06"E BLOCK D2 - AREA TABULATION PHASE 1 AREA: 2.77 AC. PHASE 2 AREA: 2.72 AC. TOTAL AREA: 5.49 AC. TMP 61 K-6-8-4 / ----) � TMP 67W- - jt. t I I I+ II I I I jr I Ij I N/F BENJAMIN B. AND Lf 3 21A ( j NDA BLAKE GAYLE LLC j , H.V. TINSLEY WHITE j °WESTFIELD,"SECTION 3 _w.,., D.B. 2813, PG 445 I D.B. 697 P D.B. 41 1, PG. 197 D.B. 88Q PG 595 PLAT . j I I I I I D.B. 703, PG 732 PS PLAT -�.. vw. _ ... AT / ---- USE:COMMERC _ I I j D.B. 704, PG 517 PLAT L-J,- -� -=� IAL i I D.B. 712, PG 689 PLAT F M.... 4ZONED R10 AND R15 I i USE: RESlDENTfAL TMP 61 K-9-1 w, - .Y N/F RAYMOND C. OR AMY HAWKINS DOSS 42°3937 E 4217 5.75' _ I I I D.B. 754, PG. 413 cIq ® o o ® ,' m cz I I I I ~f 12 - P -- N33°58'40"W 71.50' $ Q aL,4 �--fC2, 13 14 15 j117 1i3 1 20 21 x; o u 0 0 I j i 1 aI TI [7T TMTU[7 co N42°40'0 "E 404.19' Q � o P 1 tr __ i -� II KOBER . c� � _ P WAY � f (PHI VA ° u _ Q )T FIT N75 33 42 W 51.25 : • _�.. - 1� .. .. bSo f s• • p® J j � UT 8 � 7 � I--. � I •. I N �C ti 1 PHASE ONE - N54039'05"W 6384' a TMP 61K-5-1ASI N/F JAMES L. AND MAXINE F. STEELE AREA 2.77 AC. z, / D.B. 1140, PG. 261 6 -- 2 m I I � � PHASE SE TWO J _ I 0 : 5 76 77 79 80 I- LINE AREA = 2.7•� � A -,� ! CID ,( _ 31 io I PLC1 a` 'S34°31'17"E 20 53 j AREA OF AMENDMENT fn -_ OTH j TMP 61 K-5-1 --- 69 68 67 66 65 64 ' 62 N/F BRANDERMILL INVESTMENTS INC. I 2 74 73 72 71 lO D.B. 1511, PG. 93 i S54°38'47.03"E 83.00'� .g $ j d° '_ Ij; � ..-:, p. •Yyz. a }.• 3 +,� j. ���^,-__ ^ _�$- "` y � � ,.,. s'-`�"F � : �. ar { ._rd "yam'--:- r=.s=7 +y'.`° s � s"t--;. _-rs-'""°-v . a+ ». �.__-_. °21'13"W INGLEWOOD DRIVE INGLEWOOD DRIVE (PRIVATE ROAD) (PRIVATE ROAD) Y. PARCEL 1 Lu LOT D3 ._ . _•- TMP 61W-3-19A �u d TMP 61-3- 4 PARCEL 1 rn o W 2 TMP 61W-3-19A OCT STONEFIELD PROPERTY OWNER LLC I- MACFARLANE STONEFIELD, LLC o OCT STONEFIELD PROPERTY OWNER LLC DB 4857 PG 503 � � � ZONED NMD I DB 4857 PG 503 TMP 40C-46 a ® ZONED NMD DB 4165 PG 001 I ZONED NMD � � N/F VIRGINIA TELEPHONE AND TELEGRAPH °� DB 4135 PG 215 (PLAT)_, I I r I BLOCK2®OVERALL SITE PLAN 0 50 100 150 SCALE: 1 "=50' SCALE: 1 "=50' A., ■ ■r' ,■ r,J EXISTING PROPOSED AC ACRE MH ACSA ALBEMARLE COUNTY SERVICE AUTHORITY MIN GRASS DITCH LINING PER VESCH 3.32 ADA AMERICANS WITH DISABILITIES ACT NSF ARV AIR RELEASE VALVE OHE a: VDOTSTD. EC-3 DITCH LINING BF BASEMENT FLOOR PC BM BENCH MARK PERF --498-- ®12® CONTOUR LINE WITH ELEVATION BW BOTTOM OF WALL (AT GROUND LEVEL) PL v--, CFS CUBIC FEET PER SECOND PROP 27;> 12 STORM SEWER STRUCTURE IDENTIFIER CG-12 ADA ACCESSIBLE CURB RAMP (VDOT STANDARD) PSI 5; SANITARY SEWER STRUCTURE IDENTIFIER CL CMP CLASS CORRUGATED METAL PIPE PT PVC CO SANITARY SEWER CLEANOUT PVC _ CG-6 {CURB AND GUTTER} CONC CONCRETE PVI CY CUBIC YARDS PVT _w CG-2 (HEADER CURB) DB/PG DEED BOOK/PAGE R -, # OF PARKING SPACES DEQ VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY R/W RCP DIP DUCTILE IRON PIPE BENCHMARK, TEST PIT DOM E&S DOMESTIC EROSION AND SEDIMENT CONTROL RED RT III �. MANHOLE WITH FRAME AND COVER EL, ELEV ELEVATION RTE RWSA ESMT EASEMENT �- EW END WALL SAN 04PTC SPOT ELEVATION EX EXISTING SD � ADA PARKING SYMBOL FF FIRST FLOOR SDR I;r. FH FIRE HYDRANT STA FM FORCE MAIN SVC WATER CROCK/METER FPS FEET PER SECOND SW GSF GROSS SQUARE FEET SWM FIRE HYDRANT GW GUY WIRE T HDPE HIGH -DENSITY POLYETHYLENE PIPE TBR o * WATER VALVE HP HIGH POINT TC HT HEIGHT TP WATERMAIN INV INVERT TW IRF IRON ROD FOUND UG -----® -= SANITARY SEWER MAIN IRS IRON ROD SET UGE L LENGTH UGU [... _M A= --I STORM SEWER LAT LATERAL VDOT LF LINEAR FEET VESCH PROPERTY LINE/RIGHT-OF-WAY LINE LP LOW POINT VSMP LT LEFT WM CENTER LINE MAX MAXIMUM WTR WV FENCE LINE EASEMENT LINE MANHOLE MINIMUM NET SQUARE FEET OVERHEAD ELECTRIC POINT OF CURVATURE PERFORATED PROPERTY LINE PROPOSED POUNDS PER SQUARE INCH POINT OF TANGENCY POINT OF VERTICAL CURVATURE POLYVINYL CHLORIDE PIPE POINT OF VERTICAL INTERSECTION POINT OF VERTICAL TANGENCY RADIUS RIGHT-OF-WAY REINFORCED CONCRETE PIPE REDUCER RIGHT ROUTE RIVANNA WATER SERVICE AUTHORITY SANITARY SEWER SIGHT DISTANCE STANDARD DIMENSION RATIO STATION SERVICE SIDEWALK E MANAGEMENT STORMWAT R MANAG M NT TRANSFORMER TO BE REMOVED TOP OF CURB TELEPHONE PEDESTAL TOP OF WALL UNDERGROUND UNDERGROUND ELECTRIC UNDERGROUND UTILITY VIRGINIA DEPARTMENT OF TRANSPORTATION VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK VIRGINIA STORMWATER MANAGEMENT PROGRAM WATER METER WATER WATER VALVE REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 AS -BUILT DATA EXISTING STORM SEWER EXISTING SANITARY SEWER EX 1 (MH) EX 244 (DI) EX 112 (DI) EX T ,TOP = 535.92 TO P = 506.57 TOP = 496.18 TO P = 492.52 18" RCP INV IN = 525.49 _ :15" HDPE INV; OUT= 501.75! 15 ;HDPE INV OUT=;492.51 _ 8" PVC INV IN = 481.80 (FROM U) 24" 'RCP INV :'IN= 516.40 ! 8" PVC INV OUT 481.60 24" RCP INV OUT= ,516.14 EX 243MH) EX i11 (DI) _ TOP=505.$1 TOP=496.32 EX U EX-2 (MH) _ _._ 15" HDPE IWIN = 501.35' 15 IHDPE INV IN = '492.10 :TOP=495.80 _ TOP=521.57 24" HDPE INV IN = 498.43, 15" HDPE INV OUT= ,492.00 8" PVC INV IN = 487.06 (FROM V) 24" RCP INV AN= 514.27 24" HDPE INV'OUT= _ 498.32 8" PVC INV OUT = 486.86 (TOT) 24" HDPE INV'OUT= .508.67 EX 110 (MH) _ TX 70 (MH) TOP=495.9$ EX V EX-27.2(5' DIA MH) TOP=509.77 _ 15" ;HDPEINV OUT='491.90 _ _._ TOP=499.64 TOP=510.35 q15" _ HDPE INV•OUT= 501.85 a 8" PVC INV IN = 490.58 (FROM AP) :24" ,HDPE INV IN = _ 496.08 _ EX 109.1 (MH) _ ., 8" _ PVC INV OUT= 490.38 (TO U) 24" •HDPE iNV;OUT= =495.88 EX 69 (GRATE) _ :TOP=497.61 TOP=505.05 15" ,HDPE INV I OUT 491.56 iEXZ EX727.1 (5' DIA MH) ,15" HDPE INV IN = 499.80 TOP 488.06 ;TOP = 500.80 _ 15" HDPE INV OUT=499.70 EX 109 (MH) 8" PVC INV _ IN = 474.37 (FROM AB) 15" HDPE INV:IN = 492.50 TOP=497.04 _..� 8" PVC INV .IN = 473.73 . (FROM AA) 24 HD - PE INV OUT 489.40 EX 68 (GRATE) !15` ;;HDPE INV IN = 491.44 8" PVC INV OUT _ 473._ 66 24" HDPEINV OUT= 489.35 TOP=500.30 15" ;HDPEINV IN 491.39 15" HDPE INV IN = 495.40 15' .HDPE INV OUT I491.34 EX AB EX-27 (S' DIA MH) 15" HDPE INV'OUT 495.30 TOP=499.45 ;TOP=499.48 EX 108 (DI) i 8" PVC INV IN = 490.37 (FROM NORTH); 24" HDPE INV!OUT= 488.38 EX 67 (MH) TOP=497.66 8" PVC INV OUT 490.17 (TO Z) 42" 'HDPEINV OUT= :48$.18 TOP=501.08 15" 'HDPEINV`OUT=I493.02 _ 15" : HDPE INV IN = 494.11 EX AP EX-26 (6' DIA MH) 15" HDPE INV;OUT= 493.73 EX 25.2 (GRATE) TOP=501.22 ;TOP=496.04 TOP=493.96 8" _ PVC INV IN = 491.01 _ (FROM AQ) '15" HDPE INV IN = 491.84 EX 66 (GRATE) 15" ;HDPE INV OUT=i490.01 8" PVC INV OUT 490.81 (TO V) '42" HDPE INV, OUT= 487.14 TOP=498.81 42" HDPE INV-:OUT= 487.04 115" HDPE INV IN = _ 493.56 _ EX 23.2 (MH) ( EX AR 15" : HDPE INV.OUT=+493.46 TOP = 500.00 _ TOP = 502.00 EX-25(6' DIA MHj _ _ 24' ;HDPEINV OUT-+493.65 - _ 8" PVCINV OUT 496.23 _ (TO ;TOP=496.35 EX-23 (T DIA MH) I15" HDPE INV IN = _._ 486.60 TOP=499.06 ,EX 23.1 (MH): EX AQ _ 42" HDPE INV OUT= .486.52 24" HDPE INV:IN = 493.01 'TOP=500.05 TOP=504.90 42" HDPE 1W OUT= .486.47 42" HDPE INV: IN = 485.66 8" ;HDPE INV IN = :497.30 8" PVC INV ' IN = 495.18 (FROM AR) A2" HDPE INV OUT= 485.61 24" 'HDPE INV ON = 493.00 8" PVC INV IN = 495.18 (FROM AV) EX 24 (6' DIA MH) 24" HDPE INV OUT =9 .0 ; 0 8" PVC INV OUT 494.98 (TO AP) :TOP=497.43 EX-22 (7' DIA MH) .. .. ..... .............................. I15" :HDPE INV, IN= 492.33 TOP=489.80 15" HDPE INV i;IN = 489.43 ;24" HDPE INV IN = 482.10 '42" . HDPE INV .IN = 486.23 42" HDPE INV' IN = 480.20 _ 42" -HDPE INVOUT= ......:................................................ 486.13 42" HDPE INV •OUT = .. .............................. ................. 480.20. . .. ..... ................... t u owners: THE CHRISTOPHER COMPANIES 104 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC y 871 JUSTIN DRIVE PALMYRA, VA 22963 P. 434.242.2866 e: mike@30scale.com web: www.30scale.com 6 M L F. N S Lie.. No. 33028 Q 12/16/2019 w 45 �mm . ' �r----�' PARCELl | TMP81W'3-18A ' OCT STONEF|ELDPR0PERTY | OWNER LLC � 1384857PG503 | Z0NEDNkJD | EX%3'INGRESS/ EGRESS EASEMENT '- DB4135PG24Q DB4135PG215PLAT �[--| Q 20 40 80 SCALE 1"=20' ~°--- _ 'J]u9/ u xr A /^ok n vrnp�/cm-` LOT D3 ZONED NMD EX 20'SEWER EASEMENT EXISTING CONDITIONS AND DEMO PLAN THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALLTRAFFIC CONTROL DURING CONSTRUCTION, INCLUDING MAINTAINING UNOBSTRUCTED ACCESS FOR THE RESIDENTS OF THE PHASE I TOWNHOUSES AT STONEFIELD AT ALL TIMES DURING CONSTRUCTION. IN REVISIONS # DESCRIPTION DATE I COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 r-w O 2019 - 30 SCALE, LL( 4 TMP 61W-3-21A EX BIII 1 ) j I _ EEN ) Ll"DA 'LAKE GAYLY LLC s7ALL ) ) ! D,B. 2813, PG 445 j rj l ) j f"WFSTFIELD"SECT10 3 --_"-`l- It D.B. 880, PG 595 PLgT ! g697, PG 42 I i I I - ( 5 426 P T 0 20 40 60 r,ONCD C w. i�� j i f ) D.f1. 703, PG 732 P p t USE: MMF to._ .. EX. CC7NC I'AI ) 1 B. 704, PG 517 P A ) SCALE: 1 =20 ZONED RIO A PLAT ) ) offu�_ n � 1;' ) ) SE' Rl: AND RZ aJ/ REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 aH, -_-, • on„ � _ _~ _ ) 1DENT1AL OH �.. _ j ` �= ° ' y INTERPARCEL PEDESTRIAN ) of ll ( CX. ;FfEI3 t . � CONNECTION WITH BIKE N ) 6 l f t j >i RAMP -PROVIDE HANDRAIL j ) ® o BOTH SIDES - SEE DETAIL ! EX, SHED ) ! f j 20 DRAINAGE & ) EX. SFE,�S w r f `. D���, M1 ,. EET 20� UTILITY EASEMENT LrGHT pot SHEETS U EX VEPCO ESMT DB 704 P 515, 517 (PLAT) 17,z FOR ® _- ! j E J `� -.� ETAI EX. 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P DS B LLARD1(4) MAX H LL `'-' EASEMENT U3 z I ��° BO RQ LI HT (TY .} TRANS ORME (SWIT H)� o SEE S ET 21 ' OR • �. ZA I Q ti DB 4716 PG 743 c� �, I ( } ® D IL � � 7, EE SHE 17 F R DEr ` - , 14.0' 90' �' I ) 9.0 I I -�ff 10 _- - _ _ _ _. PROP. 114-LF 8 PVC • .D • m m SANITARY SEWER I 71.0' I CONd PAD $ EX. 10'X18' SW DRAINAGE R PARKING SIGN (1) ; ® 2'X25' i FAICILITY €ASEMEN a PESMTG 212 EX. R'c 22' SWM' KI LEVEL 1 ( �' 12" EXTERIOR I L DING 90 FACILI rY EASEMENT !_ j WALL (TYP) —PARKING LEVEL 1 SPA (DB PG I- -I I (DB PG DUMPSTER SCREEN WALL TO ENTRANCE �O, STOP S I , , I } 3 (R4 SPACE5, INCLUDES 7 TANDEM SPACE} , l - I --' 6A 8.0' € I I CONNECTT01UILDING -SEE CG-128 i ; 89 112 J.�� ' €� L i r 0 I � 1 > , i ARCH PLANS. L _ _ ��_®_ �9. t---- - - - - - - - •'` I L �:� 3 N ---- i . - - ---- ------ $ -I -- - -- --- - - -- -- - -- - -- - - - - - - - - - --- --- - - - - - ' --- -- l_ -- - - - - - j - -- , EX. 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DRAINAGE LOB d BLD ENTRANCE I EX 15 POWER ESMT- REFER TO ARCH PLAN FACILITY E, SEMENT EASEMENT PROVIDE BRICK PAVERS IN MEDIAN I r* DB 4160 PG 19 SHEET 21) I 10I�' y ` �� ��� FOR ALL BUILDING (DR • PG ) I DB 4716 PG 743 (REFER TO DETAI , I 1 I _ �'X6' TEE k MARKER POSTS �12 EXTERIOR I UILDING WALL DIMENSIONS 6" PVC COg DENSER DRA N ° x .GRATE _ BUILDING IN `: u - - @ )STI r p - ADD PEDESTAL POWER ! 12" PVC ROOF DRA N ' ` '..' �_ _ BLD O;'IoRHANG (TYP.) t i i E RANCE ENTRANCE _ i:.-LL� -- _ d _ _....._ _- _s.. -v- - __- / ; r ;PAVLRS-.I�F�I , y � _ y � ar-•--- ---•--r6 -�� 'f d a p: a X y S, Y I 5 t �0AR HPtANY _ " ,�,.... „� t ..-..:k � •. Ae 'ri. -- � p o,. � � c" - " m. .V '.w� any -s.— " —^9r ,:`. I �l � � , ®`mom` .:�.�? ® . :.y g y. - �;. Et3 I 1 I -- IRE- f RfIN • ., .o. vv1"4 - JU UGU 1. 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HANDRAILS ha �, _.- „___.. ,��.: ;_ EX GAsuNE EASEMENT 27 INGLEWOOD DRIVE E f I � � -_ Y . „- ** m �``>, r I/r CONTRACTOR TO RE -STRIPE HATCHED � --i � � + I �� STREET SIGN DB 4186 PG 321a a r (TYP) ® n 26 ( ! i ""� (PRI VA TE ROAD) - _ 14 AREAATEACH END OF INGLEWOOD i .� __---_ . _w _ �,..> 4' _-_.._.._. k 7 ___-_.-_ -__ ! _.. SAN-- AN- �-,_,_ SAN .-.: --- SAN--� �; �i SAS} SAN SAN �� __ - � - � w STOP SIGN � DRILL HOLE �-' PARKING AS SHOWN - ET y ki , �' 'e A s jp�® i s :# _ e .. ,. ..,:. 5 6 t E z RETAI' I WALL D ., .:. . r: : .., 4 ,, r f PS .< , 4.•, . ,{ f „ ;: MAX H - I R -.-...•..-•..._.®.--_. - ....J.::': S :' •i r \ x. °� � 2.1/ e e IGNt ,q V d !: R,Y i , •.. r... ="—,.tea e.-...m..--„"'"_-'- -_ _ .-.._. 1_-.- F,,. ,. -... , ,, s :; i� •-, / ���� -®--"may `''t" - `,_ -_-_ F LOT D - :STOP - 1I12-LF' 3 f ti Q I (:. } G EX 23 INGRESS/ t ' _ �, _ _ s # ' I SIGN I TMP o1W 3 24 a # -_.� .--. t- _-. - EGRESS EASEMENT MACFARLANE STONEFIELD, LLC C � 1 6 ( I ( __, I STOP SIGN DB 4135 PG 249 ............... _. .,_ PARCEL 1 I I __ _.._-DB 4135 PG 215 PLAT ZONED NMD I PARCEL 1 --- ••-� DB 4165 PG 001 EX PUBLIC z TMP 61W-3-19A II �7 TMP 61W-3-19A, IRE a f DB 4135 PG 215 (PLAT) I DRAINAGE EASEMENT OCT STONEFIELD PROPERTY OWNER LLC o OCT STONEFIELD PROPERTY I -..,..... - - ( DB 4135 PG 249 (Q v} ' OWNER LLC I �I I EX 20' SEWER EASEMENT DB 4135 PG 2"I_5 PLAT DB 4857 PG 503 DB 4857 PG 503 I Il I DB 4391 PG 331 ZONED NMD a ZONED NMD I I- I II I I I I LEVELS 2-6 SITE PLAN NOTES PARKING LEVEL 2 EASEMENT MAINTENANCE NOTES nANURAIL AIM RAILING NOTE MECHANICAL EQUIPMENT NOTE FIELD QUALITY CONTROL NOTE - SOIL TESTING 1. THE SANITARY SEWER MAINS AND WATERMAINS WITHIN THE ACSA CONTRACTOR TO FURNISH HANDRAILS FOR STEPS AND RETAINING WALLS AS VISIBILITY OF ALL MECHANICAL EQUIPMENT FROM THE THE CONTRACTOR SHALL EMPLOY AN INDEPENDENT TESTING EASEMENTS ARE TO BE MAINTAINED BY THE ALBEMARLE COUNTY SERVICE REQUIRED BY THE BUILDING CODE. HANDRAIL LOCATIONS AS SHOWN ON THIS ENTRANCE CORRIDOR SHALL BE ELIMINATED FIRM TO PROVIDE ALL SOIL TESTING REQUIRED FOR THIS PARKING LEVEL 1 OFFICE LOBBY INGLEWOOD AUTHORITY. PLAN ARE FOR GUIDANCE ONLY. PROJECT. REFER TO TESTING REQUIREMENTS UNDER 3.14 ON DRIVE 2. THE STORM DRAINAGE SYSTEM SHALL BE MAINTAINED BY THE OWNER OF WINDOW REFLECTANCE NOTE SHEET 25 OF SITE PLAN AMENDMENT AND SHEET 15 OF VSMP PHASE TWO. FIRE MARSHAL NOTE - KNOX BOX WINDOWS SHALL NOT BE HIGHLY TINTED OR HIGHLY AMENDMENT. BUILDING/PARKING J 3. THE STREETS ARE TO BE PRIVATELY OWNED AND MAINTAINED AND THE A KNOX BOX FOR FIRE AND RESCUE ACCESS IS REQUIRED. LOCATION OF KNOX REFLECTIVE. VISIBLE LIGHT TRANSMITTANCE (VLT) SHALL NOT F1 EA TInN r%CHFMATIC RELOCATED ACCESS EA3EMENT5 WILL BE SHOWN ON THE FINAL PLAT. BOX IS TO BE COORDINATED WITH THE FIRE MARSHAL'S OFFICE. DROP BELOW 40%, AND VISIBLE LIGHT REFLECTANCE (VLR) N.T.S. a SHALL NOT EXCEED 30% m ALT�, O m L ;S Lic. No. 33028 12/16f2 019 sheet title: LAYOUT PLAN sheet # scale: 0 2019 - 30 SCALE, LLC 0 iz z Go u u rn I =7 fU 7-- /4U vu -Wr UHU 77 P Lap, .... ..... D12 D2 14 15 16 17 18 19 20 21 W WV ffl A'1' -4 YD 4 78 79 80 Ida 5 w -------------- M, 8 5" f ' K 84 EX PARK (TO BE 510 'NLRAG& TO FILTERRA #F'6" 'Am I A ® e 7 AC 82 C 0.90 1 — - — T 5 min 1 81- " SAN— X. VARIABLE VIDTH 246.11 65 EASEMENT '%�4716 P 743 66 64 69 68 67 62 70 flF.'aMW F-16131 2A 9° aw 71 vr-51b' % PHASE LINE AREA DRAINING TO A FILTERRA (OR ADJACENT STRUCTURE% OFFSITE AREA DRAINING TO DITCH #1 OR #2 ............ ... .. . .... ... ...... W STORMWPST ER MANAGE MENT PLAN I 6g- i-ad 0 REVISIONS # DESCRIPTION DATE I COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 sheet # scale: � 't'y 0 jj 4� M L F. N S > Lic. No. 33028 12/16/2019 S'01NAL :.:..A . .t . i Q 2019 - 30 SCALE, LLC IRRIGATION SYSTEM CONDUIT 02' 1547 PVC (CAST -IN) e - Pa 3 PLAr.,E:.i A I I I r I B I I I k J '_j,� En I I rJm- (102) 4 1 I SQR 35 PVC 'va ` OUTLETCOUPLING �----------- - - - - - - - - CAST I14TO1WALL J y - 7.11797 FACE OF CURB �J 124381 PLAN WEW PLANT PROVIDED BY CGINTECH (SEE NOTE2) FLOWKIT ` DIMENSION MAY VARY;L Y., DEPENDING OR PREGASTER BUILD GONFIGURAT191 SECTION A -A RAISED'F2EE GRATE & COVER TO ALLOW FOP, CONTINUOUS LAWKiC:APING TOP SLAB -- 07"x8"1178x 2031 CLEANOUT UT (ACTUAL PRODUCT MAY VARY) SEE CURB INLET DETAIL THIS SHEET ENERGY DISSIPATION % - ROCK LAYER 6" DRAIN ROCS SECTION E®13 PLANT PROVIDED BY C ON TECH SEL NOTE 2 I ) NOTE: RAISF-D GRATE OPTIC" WILL INCREASE DEPTH FROM RINI TO OUTLET PIPE INVERT BY 4" [021 ' y Z 4.(10_ .I LANDSCAPING SUPPLIED BY }- OTHERS SEE CURB INLET bETA1L L T THIS PAGE OPTIONAL. RECESSED TOP SLAB DETAIL (TYPICAL TOP SLAB DETAIL SHOWN IN SECTION 11-E) FILTERRA DESIGN NOTES SEPARATEI LET SST UCTURE 1E FILTERRA TREATMENT CAPACITY IS 13ETERa141NEU 5Y THE 7itEATVf ttdT FATE €)F THE FILTERRA MED A N R JST 9P INSTAIIlED Dr)iVNSTR AP�t F}F THE qI FLINF FIlTERRA TO scat IVPY FLC V4S.IN Fit; Cs5 C)F Tt E $Y�,TEa1i EacSIGt1,CA4�AC1iY. SEETHE L TERRA DESIGN, OPERATIOR AND PERFORMANCE GUIDE FOR NIORE INFORMATION. 48" x 48" [1219 x 1219] TREE GRATE (ACTUAL PRODUCT MAY VARY) FRONT FACE ROSE PLATE OF CURB CAST IATI"t� TOP SLAB 4 U1021 _ MITI. 4 d CAST iN PLACE GONCRETE BY CONTRACTOR X1 REDAR DOWELS a, BENT AS NECESSARY CURB INLET DETAIL BACK RACK LEFT fRIGHT RIGHT FRONT FRONT FACE OF LEFT RIGHT CURB THROAT OUTFLOW PIPE ORIENTATION OPTIONS ORIENTATION REFERENCE IS INLETTHROAT SITE SPECIFIC DATA REQUIREMENTS STRUCTURE 14 SYSTEM TREATMENT C ACaITY (CFS A Its) WATER QUALITY FLOW HATE (CFS I s) ' .PEAK FLOW HATE (CFS I110 " RETURN PERIOD OF PEAK Fs OW (YaS) REQUIRED MEDIAINFILTRATION RATE ' PiPE DATA: LE: I IAA RIAL DIAMETER OUTLET PIPE SCH,40 PVC T'' CURT; OPENIN0 6RIEWATION TOP OF CURB ELEVATION ^ ANTI -FL U TATtUM BALLAST WiDTH HEIGHT IF REDILIFiED " NOTESISPECIAL REQUIREMENTS 'PER EHOINEER OF RECORD ggft- AL NQTEB 1.A GONTFCH TO PROVIDE ALL MATERIALS UNLESS HOTEL) OTHERWISE. 2. PLANT. MULCH, FIND DISSIPATION ROCK ARE SUPPLIED By coNTECH AND DELIVERED AT TIiMiE OF SYSTEMACTIVA710N. PLANT SELECTION SHALL BE DONE SY THE ENGINF=ER OF J�ECOR1 IN ACCORDANCE WITH THE PROJECT PLANS AND SPECIFICATIONS. 3. DINIE?1SI0NS P✓1M°+RKE13 VVITH { )APE REFERENCE DIP,AENSIOt13- ACTt),A1 nlNIEHSIOM1IS AtAY %FAPY, 4, FUR SITE SPECIFIC DRAWIN S WITH DETAILED VAULT DIMENSIONS AMU WEIGHTS. PLEASE CONITA -11 YOUR CONTEvH REPRESENTATIVE. %I~.ContechES.wati T. FILTERRA WI£RQtALfTY STRUCTURE SHALL BE IN ACC.RtANCE drlH ALL DESIGN DATA AND INF£?uA11 N CONTAINED 7 1N TIt8 CRAAIN3. u STRUCTURE DESIGNED ECT PEDESTRIAN.LI VE LOAD WITH 1I.514 C00 LD a ) AHEEL LOAD hCu TINGTHE CURB AND ADJACENT HS-2 LIVE LOA D SURCHARGE S O `�f iE STRLI CTuRe. C.)N THE A;tJ_ ht E W 7. FILTERRA STRUCTURE SHALL of PRECAST CONCRETE CONFO RM41rl�a TO As T�t C 857, ASTr t G o1B AND A:I-39I1 LOAD FACTOR DESIGNht1ETF l}D: INSTALLATION N(r TES A- ANY SUB43ASE, BAC'KFG. L DEPTH, ANIEWORAAITl-FL4Twict t PRovlmns AR--- SITE-+a^PECIFIC DESIGN CONSIDERATIONS AND SHALL BE SPECIFIED tw ENGINEER OF RECrJRro E LIFTING AND REACH CAPACITY TO LIFT AND SET THE: FILTERRA VAULT (LIFTING B. CONTRACTOR TO PROVIDE ECJIPMEt1T WITH SUFFICIENT LI N Id GLUTC;HEE PROVIDED). SPRJaA4ETTBAR WRFI SUFFICIENT CABLE IS RLQUIR€D FOR SAFLTYANU RFQUOTICIN OF DAM,AGta To C€ mCREFE STRUCTURE. C. CONTRACTOR TO INSTALL JOINT SEAUANT BETWEEN ALL VAULT SFGTIONS AND ASSEMBLE VAULT. 7. CONTRACTOR TO PROVIDE AND INSTALL OUTLET PIPE. PVG COUPLING CAST -IN TO WALL FOR OUTLET PIPE CONNECTION, P Y LOCAL 5 ICTIOi`1. B LU Urtl D L?iR IF REQUIRED RINSTAL L INLET PROTECTION E. CONTFif4CTt1RT SUPPLY Ail CF F. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO PROTECT FILTERRAP1EQW BAY FROM Cn_ 'STRUGTI4Y-RELATED EROSION RUNOFF. G. tDNT'ErH IS RESPONSIBLE FOR AcTiNvATiom OF THE SYSTEM AND PLAITING OF THE PLANT THAT IS SPECIFIED. ACTIVA710H ONLY OCCURS WHEN THE SITE IS FULLY STATIILIZED .FINAL PAVEMENT INSTALLED AND SVVEPT CLEAN OF camsTRUCTION SEDIMENT. v t a r .R Y AT L r E F, OR SPRINKLER SYSTEMS ON A REGULAR BASIS. EACH FILTERRA UNIT INGLUVES H. ALI, FILTiAIi; uldlTS 1�li��r a>� ,rt�r� .EIS � IrtRIC NUN I 1 IRRIGATION HOLES. FOR NEW OR EXISTING IRRIGATION LINES. 12'X6'FILTERRA STRUCTURE 6A C iVSTRUCTI N DETAIL: FILTERRA DESIGN NOTES IRRIC ATiON SY TEMt OQsIDU1T THE FILTERRA •rPEATPAEid`r CAPt1CITY IS. DETERMINED BY THE UTATMENT FR'A.rE . OF THE FILTERRA IAED4h. A SEPARATE INLET STRUCTURE Oe L&91 PVC (CAST -IN) - MUST HE IH$TALLEt3 0OWNSTREAl`A OF THE OFFLINE,FILTERRA TO oHvE`a` FLows IN EXCE: a or THE SYSTE 11 iESIOta CAPACITY. sEF CHE 7-11781---, 4 PLACES FILTERRA DF-SIGN, OPERATION, AND PERFORMANCE GUIDE FOR NIORF MFORMATIrJN. - - - - - - - - - - - -- ---- BACK BACK A F1 A LEFT' RIGHT 1 A-u ::. 1 sh w FA 1 r \ I LEFT 01 RIGHT 1 SDR 35 PVC -a• s _ f'a I I I CUTLETT COUPLING -------------------------- -AST IN O NALt 0 FADE S-�� 1106-f] 5-0- L15241 0 7" x $" [178 x 0 ] or 12- [3,358] CLEANOUT tilJtB (ACTUAL PRODUCT MAY VARY) M.T.C. PLAN 'VIEW PLANT PROVIDED CCa TEC'rH f 9Y r¢ ! �-fCC,=AfISTCh1 SECTION A®A tRAISEO TP.EE' JRATE & COVER TO ALLOW FOR m CONTINUOUS LANDSCAPING TOP SL P.f3 -� SEE CURB INLET DETAIL THIS SHEET �(J E�€GY LII a a11=AETlDhI FtQ ,K LAYER SECTION ®D i PL Aa1TPRC7VIrLEL1EIY C:GNTECH (SEE NOTE 2) NOTc: RAISED GRATE OPTION WILL :HkREASE DEPTH FROM RIM TO OUTLET PIPE INIYERT BY e N 021 r 4" [1021 t.ANt�SGAPING SUPPLIED BY OTHERS SEI CUP.rI' 1_ti INLET DETAIL THIS PAGE OPTIONAL RECESSED TOP SLAB DETAIL (TYPICALTOP SLAB DETAIL SHOViN IN! SECTicm 5 Eij # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/2$/2019 3 SIGNATURE SUBMISSION 10/31/2019 7-W PIGI MEDIA AND MULCH DRAIN ROCK 482' x 4 "3 [121 x 1219] TREE ORATE yAGTUAL PRODUCT fJAY VARY) FRONT FACE NOSE PLATE OF CURB CAST IWO 4"Iitlaj- TOPSLAi3 OAST IN1 LACE C CL1`ICRETE BY CONTRACTOR %T #4 REBAtR DOWELS � a BGHT AS NECESSARY CURB INLET DETAIL FRONT FRONT FACE OF LEF'r RIGHT CURB THROAT OUTFLOW PIPE ORIENTATION OPTIONS GRIER FA.TION R€FLREMCE IS mET THROAT SITE SPECIFIC DATA REQUIREMENTS SrRUCTUfI ID _ SYSTEM? TREATMENT CAPACITY (CF3I @g) ` WATER QUALl iY FLOW RATE (CFS I Vs) PEAK FLOW RATE (OFSFG�} RETURN P IOD,OF PEA KFLOWAYRS R ' REQUIRED. MEDIA INFILTRATION t•rE ` PIPE f)ATA: I.E. MATERIAL DIAAAcTER OUTLET PIP1 SCEt4tj PVG 4" CURB OFF1,11ING ORiENTArILSN TOP OF CUFF ELEVATION ' ANTI-rLOTA-HON BALLAST IF:REUUIREU WIDTH HEIGHT NOTESASPECI.AL REQUIREhr1ENT$: 'PER ENGINEER OF RECORD GENERALNOTES NOTES t- GE)TECH r? PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE. 2. PLANT. MULCH. AND DISSIPATION ROCK ARE SUPPLIED BY CORT£CH 41D DELIVERED AT TIME OF SYSTEM ACTIVATION. PLANT SELECTION SHALL RE QONE BY THE ENGIN ER C)r RECORD iryl ACCORDANCE WITH THE PRC7lECT PLANS' A14D SPECIFICATIONS. 3. ❑INIEha$IONS M1At�K1=Si'A+ITI'{ () rF REFEF;EhICE DIs'"1,ENSIrthl:�. AC;T§JALDIMEhaSI€]NS MAY VARY- 4. FC)R iITE SnGIFIC ORAWING'S• WITH DETAILED VAULT DIMEN 1CJS AND WEIGHTS PLEASE CONTAVT YOUR CLATEC H REPRESENTATIVE. r 5. IF LTER 'JVA`TER QUALITY STRUCTURE SPALL.E3E IN ACCORDANCE WITH ALL r)EsieN DATA �3NGINFORMA110M CONIMNED INTHIS PRAINING. i htA Pa. STRUCTURE DESIGNED FOR PEDES rRIAN LIVE LOAD WITH Hs (4,t}Ota Ot ;.) WHEEL LOAD LIOUNTIi G THE CUI AND ADJAC5NT HS-2 LIVE LOAD sURcHARCE a4 THE, &LLS TUN THE S fRUC rURE. 7. FILTERRA STRUCTURE HALL EE PRECASr G(;IWRElE CONFORMING TO ASTMi C U57 ASTM G-Uli1. AMID AGi-3I8 LOAD FACTOR UESIQN METHOD. INSrAL:A op tiarES A. ANY SUB-bASI!, BACEVILL 5E1571-1, AH016E2ANTl-17110YATIOH PROVISIONgARf SIYE-st EGIPIC OEMCH C'ONSIOP-RATIONS AND SHALL arz 8PECIFiEO BY ENGINEER OF RECORD.. B, COMTRAGrO: 1 PR9 lUEEOaLIPMIEMT NITH S4lFFIf�IENT LU=T[NC ALTR.wAC A A ITY. FOLIFT AND FITERtAvAU-T LIFT ING CLUTCHES PROVIDED). SPREADER BAR WITH SUFFICIENT CABLE 13 REUJIRED FOR SAFETY AND REDUCTION OF DAMAGE TO CONCRETE STRUCTURE. G. CON7RACTOR TO -INSTALL JOINT SEALANT BETWEEN ALL VAULT SECTIONS AND ASSMISLF VAULT. D. G(aParTaACiTr R Tt3 PRCAVIrUE AMa IhaSrALL OVTi =T PIPE. PVC OQUPk tN CASTdI I TO WALL FOR OUTLET PIPE CONNECTION. E. CONTRACTOR TO SUPPLY AND INSTALL INLET PROTECTION BAR IF REQUIRED BY LOCAL JURISDICTION. F. corITRACTprT TC! TAKE APPROPRIATE MEASURE6, [C7 PROTECT PIL TERRA MEDIA BAY FROM C ONSTRUCTitJN ftELATECi EROSION RUNOFF. G. CONTEC;H IS RESPONSIBLE FOR ACTIVATION OF THE SYSTU1l AND PLANTiNG CIF THE PLAINT THAT K3 SPECIFIED. ACTIVATION ONLY OCCURS WHEN THE SITE I FULL"YSTASILIZED, FINIAL PAVEMENT iNSTALLED AND SWEPT CLEAN OF C0N$TiRUCTIi.3NsELIIME€NT, M. :ALL FILTERRA UNiTS MUST RE wATIERrD BYIRRIGATION LINES OR ; PtINKLER .>YSTENI a C#t A RFGt1LAR BASIS. EACH FILTERRA UNIT INCLUDES IRRIGATION HOLES FOR NEW OR: EXISTING IRRIGATION LINES. mmomcis FILTERRA 12x6 OFFLINE STANDARD 9m- ENGINEMM SQ=QNS 11C LONG SIDE: INLET rrwvo.Gonisaei�;�.enni �-} 9025CeaiyyP ntvx.,Svlte4k4 Rig iC)a3si�r.Ctt i5t3d5! MODEL: FT1206 IRRIGATION SYSTEM CONDUIT B DZ"507 PVC (CAST -AN) () 3 PLACES I nr I r+y I ZVII I 1 . I TOIL SLeJ ACCESS CLEANOUT AND LEAN . LI1` A (SEE TREE GRATE T DETAIL .�m THIS SHEET) ---� A I L I 1' ( 102) I 5DR 35 PVC i OUTLET COUPLING - - - - - - --`• -- _- �" CAST INTO WALL T _ +-7"[fzsj FACE 3'-11" [11�41 - OF CURS i� PLAN VIEW p PLANT PROVIDED BY C+Or1TSCH (SEE 1tf3iE 2) CLEANOUT AND FRAME CAST CAST FRAf � >- 1 . } '''1 +� TREE GRATE ATE AND INTO TOP 31 tJf FRA 9E' tST INTO TOP SLA3 eft. d FL{iW fttT SECTION A -A 0 07" x 8 [178 x 203] CLEANOUT (ACTUAL PRODUCT MtAY VARY) N,T,$, SEE FLUSH CURB NOSING DETAIL THIS SHEET ENERGY D13SIPATION ROOK LAYER ,� 3" [76] MULCH [53 1 MEDIA w 11521 UNDERi RAIN STONE " 7 PLANT PROVIDED BY t CJNr c, sE>=1�ia7TE2 E H RAiSEDTREE CRATE &'GCVER TO. ALLOW FOR ` .FA SE}URATE OPTION L�lDSCAPING � LCONTINUOUS ILL INCREASE DEPTH FROM RINITCJmmETPipE INVERT Tc11 SL AB �4, [1021 V ' 4' 11021 = -- LAND�CA PING •� - - - - = SUPPLIED BY OTHERS SEE FLUSH CURH NOSING DETAIL THIS SHEET OPTIOiNAL, RECESSED TOP SLAB DETAIL (TYPICAL TOIL SLAB DETAIL SHOWN IN SECTION B-B3 STORMWATER NARRATIVE o�a:�diw„ca FILTERRA DESIGN NOTES iEFELTERRA TREATMENT CAPACITY Ifi DETERMINED B THE TREATMENT ENT RATE OF THE FILT ERRA MEDIA, A SEPARATE INLET STR UCTURE JST 13E INSTALLED DOWNSTREAM OF THE 3FFlINE FtlTERRATO CONVEY FLOWS IN EXCESS OF THE SYSTEM DESIGN PA 1ifSEETHE -TERRA L7ESICsN, OPERATION, AND PERFORMANCE GUIGE FOR MIOFiE INFORMATION. 36" x 3 " [914 x 914] TREE ORATE (A, T11AL PRODUCT MAY VARY) N.T,S, FRONT FACE NOSE PL Ai E OF CURB �� �- CAST INTO TOP SLAB 'a' (1021 MIN. -,Al 1 1 4, ! CAST IN PLACE CONCRETE 13Y CONTRACTOR - PL, REBA.R DOWELS BENT AS NECESSARY FLUSH CURB NOSING DETAIL (OTHER CURB NOSING OPTIONS MAY BE AVAILAELF) BACK IGHT PAC:P OF of CUR@ THROAT OUTLET PIPE ORIENTATION OPTIONS ORIENTATiON PREFERENCE IS INLETTHROAT SITE SPECIFIC DATA REQUIREMENTS STRUCTUREID SYSTEM TREATMENT CAPACITY (CFS 11/0 WATER QUALITY FLOW SAE (CPS; VS) ' PEAT{ FLOW RATE (CFS I Uf;) ' RETURN PERIL]D 01 PEAK FLOW (YRS) iREQUiRED MEDIA INFILTRATION RATE - ` PIPE DATA: 1 E_ MATERIAL [iIANhE7EF2 OUTLET PIPE _. -. SDP{ 35 PVC 4" CURE OPENINfi OrMITATION " TOP OF QURB ELEVATION 9A B LAST VWI7 FI' Ar�irl t=LCJaTAT AL T IF REQUIRED « HEIGHT NOTESISPEGIAL RFUUIREMENTS: PER ENGINEER OF RECORD GENERAL Nr3-rES 1. CO"TEcH TO PROVIQJ� .ALL &I ATERIALS UNLESS NOTED OTHERWISE. 2, PLANT, MULCH, AND DISSIPATION ROCK ARE uUPPLIEE) BY CONTECH AND DELIVERED ATTIME OF SYSTEM ACTiVATON. PLANT SELECTION SHALL BE DONE LAY THE EMG JEER OF RECORD IN ACC ORDANCE VVITI'R THE PROJECT PLANS AND SPEC IFIGAT€ONS. 1 DIMENSIONS M1ARKEr- P1ITH () ARE REFERENCE DIMENSIONS. ACTUAL DIMENSIONS MAY VARY. 4, FOR SiTE SPECIRC DRAWINGS WITH DETAILED VAULT DIMENSIONS AND WEIGHTS., PLEASE CONTACT FOUR CO >rTECH R17PRESENTATNE. vrrrn Ci�ratschTr� com 5. FIL TERRA WATER,QUALITY STRUCTURE SHALL BE iN AQCORDANCE WITH ALL DESIGt-WATA AND IiSiF4RMATION CON. TAINEG IN THIS URAWING: LOAD D CURB AND ADJACENT AGENT HS-2 LIVE L.AA VGxTHE `, ,} � ti bdC1UNTIl f : STRUCTURE E7E D 4'JITH H5 4 oUii LBS, VJNEEL LOAD � ST RE D£u�1Gt�1£Ck FOR PEDES N Li dE LQA A SURCHARGE ONTHF WALLS OF THE �TRUCTUP, E r METHOD- 1W AC LOAD FACTOR s '-t�10 AND B CIA FA .a 7. FI_ E RA S rt t P P ETE CGNi; rR h.11 Pa ?CJ xt f €R .s G T R T �CTJFt SHALL BE PRECAST CC;NCR rJ G � �, f. IZ TAi LAIIQN NQjEB: A Y. ' PROVISIONS -ARE BITE- SPECIFIC V.ESIGI I CONSIUERATION€J AND SHALL BE SPECIFILD A1d �Ul3-BAwE.13ACi�FlLL DEPTH, A141�1UR ANTI PLt�TATICJ�! BY ENGINEER OF eRECQRD; B. CONTRACTOP TO ?IROVI©F E€aUIPN1ENT "dlITF€ SUFFICIENT LtF`TING AND REACH CAPACITY TO UP•T AND SET THE CiLTERRA VAULT {LiF?IPyG r E s R3 UCTION OF DAMAGE TD CONGP.ETE AC~1D ER CLUTCHES PROVIDED). SPREADER BAR WITH SUFFICIENT C�LE 13 REQUIRED FAR SAFETY . STRUCTURE, C. CONTRACTOR TO IV , LL JOINT SEALANT BETNEEri ALL �AAULT S�Tt4rt$ AND ASSEMBLE "IALILT. U. CONTRACTOR TO PROVIDE-41D INSTALL OUTLET PIPE. PVC COL)PLiNG EAST -IN TO WALL FOR OUTLET PIPE CONNECTI©N. E_ CONTRACTORTO(SUPPLY AND INSTALL INLET PROTECTION BAR IF RE4UltREIJ BY LOC. JURt ICTiON, F. COWRACTdR Tai TAKE AP TO PaQT�OT F{LTERCONSTRUCTION-RELATEDaa MEDIA FROM EROSION RUNOFF. G. CONTECH 15 RESPONSIBLE FORACTiVATION OF THE SYSTEM AND PLANTING OF THE PLANT THAT la SPECIFIED: ACTIVATION ONLY OCCURS VoiEN THE SITE iS FULLY STABILI EDi P114AL PAVEMENT INSTALLED AND SWEPT CLEAN OF CONSTRUCTION SEDIMENT. H. ALL FILTERRA UNITS MUST DE WATERED BY IRRIGATION LINES OR SPRINKLER :SYSTEMS ON A.REGULAR BASIS. EACH FILTERRA UNIT INCLUDES IRFRIGAVON HOLES POR NEVV OR EXISTING; IRRIGATION LINES_ NOTE: STORMWATER NARRATIVE ON THIS SHEET IS BASED ON APPROVED PLAN WPO 2014-00096 PREPARED BY WW ASSOCIATES, SHEET 21 OF 33. IT IS BEING ALTERED TO INDICATE THAT ALTHOUGH THE IMPERVIOUS AREAS AND FILTERRA LAYOUT HAS BEEN MODIFIED, THE SITE STILL COMPLIES WITH WATER QUALITY CRITERIA. STORMWATER DETENTION FOR THE IMPROVEMENTS PROPOSED WITI=I THIS SITE PLAN WILL BE PROVIDED BY THE PERMANENT NORTH SWM FACILITY. DETAILS FOR THE FACILITY ARE PROVIDED ON THE ALBEMARLE PLACE STORMWATER MANAGEMENT PLAN AMENDMENT NC.4, WPO# 2010-00023. STORMWATER QUALITY FOR THE IMPROVEMENTS PROPOSED WITH THIS SITE PLAN WILL BE PROVIDED BY THE STORMFILTER AND VORTECHS UNITS TO BE CONSTRUCTED AS PART OF THE ALBEMARLE PLACE STORMWATER MANAGEMENT PLAN AMENDMENT NO.4, WPO# 2010 00023, AND THE FILTERRAS PROPOSED AS PART OF THIS PLAN. THE STORMFILTER AND VORTECHS UNITS PROVIDE A POLLUTANT REMOVAL RATE OF 60%. THE FILTERRAS PROVIDE A POLLUTANT REMOVAL RATE OF 74%. THE REQUIRED POLLUTANT REMOVAL RATE IS 66% FOR BLOCK D2. (PLEASE REFER TO BMP COMPUTATIONS USING THE SIMPLE METHOD WORKSHEEf PROVIDED ON THIS DRAWING.) THE FILTERRAS SHOWN FOR BLOCK D2 SHALL BE INSTALLED AS PART OF THIS PLAN AND WILL PROVIDE THE REMAINING WATER QUALITY NECESSARY FOR THAT PORTION OF THE STONEFIELD DEVELOPMENT. POLLUTANT REMOVAL CALCULATIONS FOR BLOCK D2 REFERENCE SIMPLE METHOD WORKSHEETS ON THIS DWG AND THE DRAINAGE AREA MAP ON SHEET 6 OF THE VSMP SET. TOTAL DRAINAGE AREA = 5.49 ACRES TOTAL L(PRE) = 7.91 LBS TOTAL L(POST) 23.6 LBS TOTAL POLLUTANT REMOVAL REQUIRED = 15.74 LBS DRAINAGE AREA TO FILTERRAS = 1.29 ACRES PERCENTAGE PROJECT AREA TREATED BY FILTERRAS = 23.5% FILTERRA POLLUTANT REMOVAL RATE = 74% STORMWATER & VORTECHS POLLUTANT REMOVAL RATE = 60% POLLUTANT REMOVED BY FILTERRAS 0.235 2 3.60 LBS 0.74 = 4.11 LBS POLLUTANT LOAD REMAINING = 23.60 - 4.11 = 19.54 LBS POLLUTANT REMOVED BY STORMFILTER & VORTECHS (19.54 LBS)(0.60) = 11.72 LBS TOTAL POLLUTANT LOAD REMOVED 4.11 LBS + 11.72 LBS = 15.83 LBS 15.83 LBS > 15.74 LBS `POLLUTANT REMOVAL REQUIREMENTS ARE MET FOR THIS AREA. Status Original Structure Number Revised Structure Number Original Size Revised Size Filerra TC Filterra INV OUT Bypass Str INV IN PVC Outfall (In.) Recessed Top Modified Narrow Length Sidewalk Configuartion REVISED 23.4 1A 6 X 4 8 X 4 500.20 496.66 496.00 4 Yes No REVISED 25.5 4A 13 X 7 8 X 6 510.20 506.66 505.80 4 Yes No REVISED 244.1 6A 6 X 4 12 X 6 507.11 503.57 502.59 6 Yes No o INSTALLED 245.1 N/A 6X4 N/A 507.65 503.98 502.00 4 Yes No INSTALLED 248.1 N/A 4 X 8 N/A 518.04 514.54 512.00 4 Yes Yes hortVairsion MF' ow-puta,ilcirle Fcir'4 brkSfieets - Albemarle CourrilYIiNbtee Protect on ord(tlance: Modified Sihiple Method Plan WPO 2014-a AMENDMENT Water Reso-urces Afea, Preparer 30 SCALE, LL.G Date. 07-08�201 9 Project Drainage Area De-ai€gnatsvri PHASE I - TOWN1jOMES AND PHASE 2 MIXE0 USE L Storm rollutani Qi wf. in p0 os, L � [P{f"{�v11.2 1 [ C(A.k� 721 py itlea" IUsttTffd�e RV-r3_s}a + 4i.iN)Jtt) R,I. 511tEiit larail1 wriactionfci:ttar,.4, ! 'I p�cOni 6rlt�raluu2rn�v� ; 73' annual pfampilatfnrt, 4S. in A bemada A ata51e01 84-0 In antes in SuNe01 of -a age 010c, [ A _ro.49 �. j1a11utantv€,ncentrel, mg16 grppsn lefpat Rtsuapltceva f iaetul :-3pp @d to PR V tequilerl l F9tnlenl AaIL e in ry, 0,5' aeet Imp rv. area = :A(IAAM310(01 &12j 7 RR mquQod ririnrval , 1pdy-l) -1x L(pm) tARR remurzd ufficiancy ° 111110atl.(posi) Imlasrvlo iIs Cover Computation fvaluos in fagot & Mume feet) mp Amp ip Slavtieu -bl�ant ` +ipsiln jf�aved' Lemm Width 3uk�rCrC i I ( I englh Width SfIbt4E 1t 1 F I f Al dP4RKi1N 8,264 < . ilrres rays LSatgth ' Wtrdifs nQ. au6tui€IE t ILgngth vhft r no Subtotal r 1UP41 wants ` lxi I. t DRIV1 WAYSISIDE,WALKS � 23,639 - 7P2it41ag Lef A�� 1 AAT� 2 Area ,4aea s j Aroma t Area 2 Area 3 Aria i liaf1 afga� jF3 Tult05ai 'Area 1 A1EQ 2 0bIt7w1 n L��trvct0ceta �� ne SUt�t�afal 1 i Arua itv BUILDIiNIGS I 2 t ltcitvAly°grnaad pnetutrr 8 As€sa , I Ar ,�a argils -,)fw cullsk�lw turf 4,40 i x,p.G # a0> i I itCl?,an )MOT hapeavicluS A464S ;nperri aus Cover Rv oaf {p l V 0.7Q 267�2 1 JTAI (tv1PEE uIOU' s 773f 127 8F Re�developm�ent (Fier Development AY ae, oxiding Irnpervlaua cover t- 241'4 I f 11 pre) ` Ftv(Itra) I (pnv) L{po i r -A Area Type I Q 7L1 ' i7 417 2Cd4V 1)23d)0140lnpmant I rmor i 4 fi 35 0 I35r rJ 0,05 0.86 11.56 , Ifn!s f 9041 Drinking 71ater Watefsiaeds I I' D 40 : Ca ®5 T sa IT 0i 1.16 13 21 1 12 aJ g ra rJth2r Mural L and ' rev 3Q M€ay 2002 JViIK M L F. S Lie. No. 33028 12/16/2 ®19 I h� 1 ON A L � sheet title: WATER s QUALITY 1 COOVIP ti LI AINID FILTERRA A 1 3DETAILS{ y t sheet # <i fi I i G: 1 s Y a scale: 1"=20' date: 3 14/2019 Q 2019 - 30 SCALE, LLC 0 20 40 60 HORIZ. SCALE: 1"=20' 0 5 10 15 VERT. SCALE: 1 "=5' 4.0' TOP WIDTH 1� �05- �1 2 2 2.0' DITCH TYPICAL SECTION NOTE: TYPICAL DITCH SECTION TO BE USED FOR DITCH #1, #2AAND #2B. DITCHESTO BE LINED IN ACCORDANCE WITH DITCH CALCULATIONS THIS SHEET. DITCH CALCULATIONS DITCH #1 A 1.35 AC' 'ABBREVIATIONS: C 0.45 A=DRAINAGE AREA Tc 5 MIN. C=RUNOFF COEFFICIENT 12 5.4 IN/HR Tc=-TIME OF CONCENTRATION Q2 3.3 CFS 1=RAINFALL INTENSITY 110 7.2 IN/HR TQ=PEAK RUNOFF Q10 4.4CFS n=MANNING'S ROUGHNESS FACTOR A=FLOW AREA P=WETTED PERIMETER V=VELOCITY 10-YEAR CAPACITY 2-YEAR VELOCITY SLOPE 7.8% SLOPE 7.8% n 0.03 n 0.03 A 0.82 SF A 0.67 SF . P 3.40 FT P 3.19 FT d100.31 FT V2 4.91 FPS QCAP 10.4 CFS USE EC-3 LINING DITCH #2A (0+00 TO 0+:56) .AREA 0.69AC C 0.47 Tc 5 MIN ill :5.4 IN/HR; Q2 1.8 CFS, 110 ` 7.2 1N/HR Q10 2.3 CFS 10-YEAR CAPACITY 2-YEAR VELOCITY SLOPE 36.0%; ;SLOPE 36.0% n 0.03 n 0.03 A 0.32 SF A 0.27 SF P 2.62 FT P 2.54 FT d0 1 0.1 4 V2 f.f6 FPS QCAP 22.3 CFS: USE CL 1RIP-RAP LINING 3 0 5 O 80 + 1' 1 H# B + C3lTC � { � } . AREA 0.69 AC C 0.47 Tc 5 MIN, 12 5.4 IN/HR :Q2 1.8 CFS' 110 7.2IN/HR Q10 2.3 CFS' 10-YEAR CAPACITY 2-YEAR VELOCITY SLOPE SLOPE _ _ . _ _ n 0.03 n _. _ 0.03 _ A 0.87 SF. A 0.73 SF P 1 3.47 FT P 3.28 FT d10 0.33 FT I V2 2.45 FPS` QCAP 5.0 CFS USE EC-3 LIMING 525 lot Lu u su Lu 525 520 515 510 a� Lu STORM;p�� �^ TORSEWER ER DESIGN COMPUTATIONS (10-YEAR DESIGN STORM) I FROM TO A C A * C (INC) A * C (ACC) I Q (INC) Q (ACC) DIA L INV UP INV DN S n Tc V QcaP AACAC . IN HR C FS G S F IN FT FT FT o ' a, 1 MIN FPS ' CFS , 7 EX 27.2 1.35 0.45 0.61 0.61 7.24 4.40 4.40 15 93.95 ' S08.36 506.36 2.12 0.0120 5 7.9 10.2 EX 27.2 EX 243 - - - - 168 7.24 - 12.1 6 24 68.46 495.88 492.91 4.34 0.0120 5 9.3 51.1 6 EX 244 0.47 0.90 0.42 0.46 7.24 3.06 3.33 15 10.59 502.10 5 01.77 3.12 0.0120 5 8.3 12.4 EX 244 EX 243 0.15 0.68 0.10 0.56 7.24 0.74 4.05 15 10.59 501.70 501.30 1.57 0.0120 5 6.6 8.1 EX. 243 EX 27.1 - - - 6.28 7.24 - 45.47 24 85.86 492.91 489.40 4.08 0.0120 5 6.6 45.5 4 3 0.27 0.90 0.24 0.26 7.24 1.76 1.88 15 24.98 502.32 501.36 3.83 0.0120 5 7.5 13.7 3 2 0.41 0.90 0.37 0.63 7.24 2.67 4.55 15 39.25 501.16 - 499.80 3.47 _..._ 0.0120 5 9.6 13.0 2A - 2 0.69 0.41 0.28 _ 0.28 7.24 2.05 _ 2.03 15 _ .- 51.73 _ 501.41 _ 499.47 3.75 0.0120 _ 5 12.4 13.6 2 EX 23.2 - - - _ 0.91 7.24 _ - 6.58 15 98.20 499.27 495.08 4.27 0.0120 5 11.2 14.5 1 EX 23.2 0.27 0.98 0.26 1.09 7.24 1.92 7.89 18 22.07 495.50 495.10 1.81 0.0120 8.4 15.3 EX 23.2 EX 23.1 - - - 1.76 7.24 - 12.74 24 23.50 494.00 492.97 '; 4.38 0.0120 5 4.8 47.5 STORM SEWER INLET COMPUTATIONS IONS (2YEARDESIGN STORM' EXCEPT AS NOTED) STR # TYPE THROAT GRAbEj, TOP Ls PCs n CCs GUTTER LOCAL �� CAPTURE Allowable „ MAX PONDED P LAD_ED LENGTH SUMP. WIDTH DEPRESSION Spread SPREAD 10-YR DEPTH 10-YR WSE _ (FT) o (FT / 0 a: l O a FTINC FS o o; FT FT FT 1 DI-3C 6 SAG 500.10 2.00 0.03 0.013 8.33 2.00 2.0 1.51 100.00 7.00 2.09 - - 2A DI-12 48"X24" 48"X24" SAG 505.70 - _ _ 0.40 0.013 8.33 2.00 2.0 1.84 100.00 7.00 5.40 1.10 506.80 4 Di-36 6 - SAG _ 510.30 5.00 - _ 0.03 _ 0.013 8.33 2.00 . 2.0 1.51 100.00 7.00 2.09 - - - - 6 DI-36 6 GRADE 506.59 5.00 0.03 0.013 8.33 2.00 2.0 2.62 100.00 7.00 4.28 - - 7 DI-12 48"x24" 48"X24" SAG 513.50 - 0.16 _ 0.013 8.33 2.00 2.0 - 3.46 100.00 7.00 6.67 0.72 514.22 2 MH-1 - - 504.50 -. 10.21 - - - - - 3 MH-1 - 505.45 - - - - - 8.42 - ABBREVIATIONS: Ls=LONGITUDINAL GUTTER SLOPE, PCs=PAVEMENT CROSS SLOPE, GCs=GUTTER CROSS SLOPE STORM SEWER STRUCTURE NTE 1. THE INVERTS SHALL BE SHAPED IN ACCORDANCE WITH VDOT STD. IS-1. 2. STEPS IN ACCORDANCE WITH VDOT STANDARD ST-1 ARE TO BE PROVIDED WHEN THE DEPTH OF STRUCTURE (H) IS 4.0' OR GREATER. REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 515 1*1 Lu 2 2A 520 520 - -- � N um � Lu X � N Ln C,i E, 515 515 510 510 .. - - - EX. GRADE PROP GRADE 505 505 500 500��- -� 495 495 _..._ -- ........ - -- - 490 490 t -- - -- 00 0 _.... ._..... _._ _...._ _.. _.... .. ,__.. ,_....ter _ _....-... _. 485 485 cr; °q cn a rn..= 99 t a _ii_ u 0 - >» > Ln - Lei Lft 9.L9 ci U) �rm Ln 2�4 6 _. -. .. .._.. ..�-. cn uj _ .._... ._...__. _. u a C�__Ln tO Lu ara �._... m u Lu ._ ..... ... _ O Lu REMOVE DI -TOP AND REPLACE WITH MH-1 FRAME AND COVER AT . ------ TOP EL=506 °AWUST AS -NEEDED -TO -BE FLUSH- _ V!lITH..FINAL_PAVEMENT_.... GRADE _ -- EX. GRADE PROP. GRADE 10.59' -15" HDPE [a 3.12% rn 0 L Ln __.. .._-..N .:___....... _ .. ....... ------..__ Ln u �� � m all II _... .. C ° + r' Q = in 0 10 Ln 10+00 STORM PROFILE (EX. 244 - ) 520 515 i 11 10+00 STORM SEWER PROFILE (EX. 23.2 - 1) 515 ®-i mW 1'= •ram►•,''. 9 r.• z 0 ui _1 Q Lu J Q C 2019 - 30 SCALE, LLC 0 it W I Offu ONtA 15, JAG E ESMT -! � 940 PG 212 21 § EX. ON E-WAY SIGN 86 FF-612,7v 87 FF-512.'" 88 FF-sli-m 4 FF-f1mzr I F EX, VARIABLEVIIDTH 6� EASE I AENT CUB 4716 P 3 743 OF-mWa fv_mml 62 rw 10 GRADING EX. PARK W tZ EASEMENT W - - - - - - - - - -- r D RIL W (TO E W ENLRAGED) DB 4135 PG 249 510 EXISTING WATER AND SEWER LIMES, SEWER Jig?DB 4135 PG 215 PLAT L- - - - - - - - - - - - - - - - - - - - - - - - LATERALS, WATER LATERALS AND WATER I X j W METERS TO BE ABANDONED IN ACCORDANCE EXISTING-T8M' PORAR-Y'STOCKOILE., TO BE LOWE EASEMENT WITH REQUIREMENTS OF THE ALBEMARLE 11�6 DURING E&S EX. ACSA L CQ VARIABLE IDTH PODIUM FOOTPRINT X.. JWD I EXISTINGCQNDITtqNS & DEMO PLAN, SHEET 6 COUNTY SERVICE AUTHORITY (ALSO REFER TO PHASE I GRADING C) DB 4716 PG 743 SHOWN FOR REFERENCE PURPOSES ONLY THIS PHASE Sift PLAN AMEND > MEW) Ln E/1 m m r DRAINAGE 520 0 ESIVIT 3RbvirDE'(4)-4XgXlf PLYWOOD ffff qq PG 212 5H EETS AND (5) *X4 P05TS TO S. FLOW BAFFLES FOR I EXISTING WATER AND SEWER LINES, SERVEA L STRUCTURES, SEWER LATERALS, WATER SEbIMEkT-WASIN,(8JEE DETAIL CONTRACTOR TO LEAVE EXISTING )44 ABANDONED IN ACCORDANCE WITH ROADWAYS OPEN TO RESIDENTIAL LATERALS AND WATER METERS TO BE - - - - - - - - - - - StiEET REQUIREMENTS OF THE ALBEMARLE COUNTY CONTRACTOR TO VFAdY SEDIMENT BASIN TRAFFIC DURING CONSTRUCTION. SERVICE AUTHORITY (ALSO REFER TO "EXISTING SEDIMENT BASIN CONTOURS'M�E FLAGMEN TO BE PROVIDED IN THE 510 RISER STRUCTUWAND OUTFACE PIPE ARE I u ....... .... P6 CONDITIONS & DEMO PLAN", SHEET 6 OF SITE TAKEN-FROM-ORIGINAL,VSIVIP-PLA�, EVENT THAT THE ROADWAY WILL BE FUNCTION PROPERLY PLAN AMENDMENT) WPO 2014-00096 506 I BLOCKED TEMPORARILY TO _2451 jffi FACILITATE WIDENING -OF CASH ALLEY."', INSTALL 15" STORM PIPETROM EX 'A )IN PHASE SEDIMENT CLEANOUT ELEVATION STR 23.2 TQ..PRO'P. STR. 2 AND 2A LINE___�, UR ZCAkl' CAk 494.5 PER WPO 2014-00096 TG-INTERCEPT OFFSITE WATER I �Ij sm N I I sm SAN sm sm sm -4 0, r 00 C71 0 p! cm F71 Q0 M W W rN W Ez; r- LO r" La 5041.1--. CONTRACTOR TO 4�y PROVIDE m 1 G 502 WATER SOURCE TO CLEAN > VEHICLES AS Ia m 0 THEY LEAVE THE SITE. WASH 500 -A CONSTRUCTION VEHIC A", ��498 WATER IS TO BE DIRECTED F --4 �t.0 96 --- 49 494.5 - TOWARDS THE SEDIMENT I 12.5 Tj 5 492BASIN OR APPROVED 1 504 - .. . .... ... A -A SWIMENT-TRAPPING DEVICE EXISTING SEDIMENT BASIN _",FLOOR DIMENSIONS = 204'X 10' 204 .21 a EX. DRAINAGE x0 492 492 WASH WATER EX 15' POWER ESIVIT FR FL® EASEMENT 0 494--4 DB4 f 716 PG 743 4 r i;;A7, MARKER POSTS I I__ - - "-F;. N 4 D'ESTAL �IuTlr 98- AND PE _r� kial 11 -F cno.5 d, r L - - - - - - - - - - - - - L _J z 7 - - - - - - - - - - - - - T 41 A5 500 r tj i ttr i Z 'A- POWER- XALVE VAULT 71 r 67 x - - - - - - - - -- EX GASLINE EASEMENT DB 4186 PG 321 lig W -W W i Z I I !, I -n IIVULL VVUUU Ut-VI Vr- � 6 1 C) 10 �jij r 2 25 (PRI VA TE ROAD) IZ--, f_--f SAN SIN - SAN-- SAN-- S SAN­=--- SAN--===-- '_SAN" § --- V 71 -j 1ST I nrot, I EROSION AND SEDIMENT CONTROL LEGEND STD# ABBREV. SYMBOL E&S PRACTICE 3.01 SA -0--Cl- SAFETY FENCE 3.02 PCCME:f� A PAVED CONSTRUCTION ENTRANCE 3.05 SF -X-X- SILT FENCE (WITH WIRE BACKING) 3.07 IP(a INLET PROTECTION 3.09 & 00 DIVERSION DIKE 3.11 RWD E) P, RIGHT-OF-WAY DIVERSION 3.18 OP OUTLET PROTECTION 3.31 TEMPORARY SEEDING 3.32 PS Ps PERMANENT SEEDING 3.3.5 MULCH 3.36 SOIL STABILIZATION BLANKET/MATTING LIMITS OF DISTURBANCE EROSION AND SEDIMENT CONTROL PLAN - PHASE 1 PHASE ONE WORK SEQUENC! 1. INSTALL PAVED CONSTRUCTION ENTRANCE AS SHOWN ON PLAN. 2. CONTRACTOR TO MAINTAIN SAFE AND SEPARATE INGRESS/EGRESS TO PHASE I FOR RESIDENTS AND BUILDING CONTRACTORS THROUGHOUT CONSTRUCTION. IN THE EVENT THAT THE ACCESS NEEDS TO BE TEMPORARILY BLOCKED FOR SAFETY PURPOSES, CONTRACTOR TO PROVIDED FLAGMEN TO CONTROL TRAFFIC AT ALL TIMES. 3. ENSURE EXISTING SEDIMENT BASIN IS OPERATIONAL AND THAT EXCESS SEDIMENT HAS BEEN REMOVED IF THE LEVEL HAS REACHED THE CLEANOUT ELEVATION OF 494.5. ENSURE THE DEWATERING STRUCTURE IS OPERATIONAL. 4. INSTALL RIGHT-OF-WAY DIVERSION AT INTERSECTION OF CASH ALLEY AND KOBER WAY AS SHOWN. 5. INSTALL PERIMETER CONTROLS TO INCLUDE SAFETY FENCE, SILT FENCE AND DD #2A AS SHOWN. 6. PERFORM DEMOLITION AND ABANDONMENT OF CURB, PAVEMENT AND UTILITIES AS DIRECTED BY THE E+S PHASE I PLAN. 7. ENSURE WATER METERS ARE RETURNED TO THE ACSA FOR CREDITS AND THAT ALL WATER AND SEWER UTILITIES ARE ABANDONED IN ACCORDANCE WITH THE REQUIREMENTS OF THE ACSA, 8. INSTALL STORM SEWER PIPE RUN FROM EXISTING STRUCTURE 27.2 TO STRUCTURE 7, AND FROM EXISTING STRUCTURE 23.2 TO STRUCTURE 2 TO STRUCTURE 2A. PROVIDE DROP INLET PROTECTION FOR STRUCTURES 7 AND 2. 9. INSTALL TEMPORARY DIVERSION DIKES #1 AND #2 AND #2A AS SHOWN ON THE PHASE 1 PLANS. THESE DIKES ARE TO BE EXTENDED TO STR 7 AND STR 2 RESPECTIVELY. IMMEDIATELY PROVIDE TEMPORARY SEEDING TO DIKES, ESPECIALLY ON THE WEST SIDE, SO THAT VEGETATION CAN BE ESTABLISHED AS SOON AS POSSIBLE AND THE DIKES SHALL MORE EFFECTIVELY FUNCTION AS "CLEAN WATER DIVERSIONS" THAT WILL DIVERT RUNOFF FROM OFFSITE UNDISTURBED AREA TO STORM DRAIN INLETS WHICH WILL PIPE THE CLEAN WATER AROUND THE CONSTRUCTION AREA. DIKE #2A 15 TO PREVENT RUNOFF FROM FLOWING ON TO THE ADJACENT STONEFIELD COMMONS PROPERTY TO THE NORTH. 111124 J091 Alf. 10. FOLLOWING COMPLETION OF THE CLEAN WATER DIVERSIONS, CONTRACTOR MAY CONTINUE TO PERFORM SITE GRADING OPERATIONS TO ACHIEVE ROUGH GRADE ACROSS THE SITE. 11. ONCE ROUGH GRADE IS ACHIEVED, THE CONTRACTOR MAY PROCEED TO PHASE 2 CONSTRUCTION WITH THE APPROVAL OF THE COUNTY E+S INSPECTOR. I HE LUN I KALI UK SHALL EMPLOY AN INDEPENDENT TESTING FIRM TO PROVIDE ALL SOIL TESTING REQUIRED FOR THIS PROJECT. REFER TO TESTING REQUIREMENTS UNDER 3.14 ON SHEET 25 OF SITE PLAN AMENDMENT AND SHEET 16 OF VSMP AMENDMENT CONTRACTOR NOTE CONTRACTOR TO FURNISH COPIES OF ALL GEOTECHNICAL REPORTS, MEASUREMENTS, OBSERVATIONS, RECOMMENDATIONS AND TEST VALUES TO ENGINEERING DIVISION, ALBEMARLE COUNTY, ATTENTION: JOHN ANDERSON. (EMAIL PDFSTO JANDERSON2@ALBEMARLE.ORG) STREET SIGN 23 STOP SIGN DRILL HOLE SET ........... STOP SIGN F.Trj_&%__irm_rQ 1. BLOCK D2 HAS BEEN PREVIOUSLY CLEARED PER THE ORIGINAL VSMP PLAN FOR THE 5.49-ACRE PROPERTY. THE INFRASTRUCTURE IN THE FIRST PHASE (PHASE ONE) HAS BEEN COMPLETED AND WAS PARTIALLY EXTENDED ON TO PHASE TWO FOR FUTURE CONNECTIONS. 2. THE SECOND PHASE (PHASE TWO) HAS BEEN ROUGH -GRADED AND SEEDED, AND THERE IS AN EXISTING STOCKPILE AND SEDIMENT BASIN. 3. SOME OF THE INFRASTRUCTURE, SUCH AS CURB, PAVEMENT AND SOME WATER AND SEWER WILL NEED TO BE DEMOLISHED/ABANDONED AS SHOWN IN BOLD ON THIS PLAN. REFER TO THE MAJOR SITE PLAN AMENDMENT FOR THE COMPLETE DEMOLITION AND ABANDONMENT SPECIFICATIONS AND NOTES. 4. THE CONTRACTOR SHALL RE-ESTABLISH THE LIMITS OF CLEARING AND GRADING ALONG THE WESTERN PROPERTY LINE PRIOR TO MOBILIZING. 5. CONTRACTOR SHALL MAINTAIN CLEAR AND SAFE ACCESS TO THE RESIDENTS AND BUILDING CONTRACTORS AS NECESSARY TO PHASE ONE. 6. CONTRACTOR MAY PROCEED TO THE PHASE 2 EROSION AND SEDIMENT CONTROL PLAN UPON APPROVAL BY THE COUNTY INSPECTOR. 0 20 40 60 SCALE: 1"-20' Aimplow, # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 owner: ff > ry 0 LLI ANIL L'Lai X. j LLJ rNI CD lill m 0 cn LLJ 0 Q0 r ftfti r14 01 > ILL L4j < ac' < 0 & 61, rLF_-N_TT17eS Lie. No, 33028 12/16/2019 14" 110NAL © 2019 — 30 SCALE, LLC v z 0 00 u J r__ Ie--9'v � 0 EX. ON E—WAY SIGN EX GAS[ INE EASEMENT DB 4155 PG 321 W W W STD# ABBREV. SYMBOL E&S PRACTICE 3.01 A —EJ-0— SAFETY FENCE 3.02 =171 PAVED CONSTRUCTION ENTRANCE 3.05 SF X—X— SILT FENCE (WITH WIRE BACKING) 3.07 IP INLET PROTECTION 3.09 DIVERSION DIKE 3.11 RUVD w RIGHT—OF—WAY DIVERSION 3.18 OP OUTLET PROTECTION 3.31 TS rs TEMPORARY SEEDING 3.32 PS P5 PERMANENT SEEDING 3.35 MULCH 3.36 SOIL STABILIZATION BLANKET/MATTING LIMITS OF DISTURBANCE 1. INSTALL REMAINING STORM SEWER STRUCTURES AND PROVIDE INLET PROTECTION. 2. PROVIDE DIVERSION DIKE #3 ALONG THE PROPOSED CURB LINE WEST OF THE PROPOSED BUILDING PAD. 3. AT THIS POINT OF THE CONSTRUCTION, ALL DISTURBED AREA OUTSIDE OF THE BUILDING PAD WILL BE DIRECTED TO A PROTECTED STORM DRAIN INLET. 4. THE CONTRACTOR MAY BEGIN TO GRADE THE BUILDING/PODIUM PAD AND DIG THE PERIMETER FOOTERS ON THE WEST SIDE OF THE BUILDING, MOVING TO THE EAST TOWARDS THE SEDIMENT BASIN. 5. AS THIS WORK PROGRESSES, CONTRACTOR MAY PHASE THE FILLING OF THE SEDIMENT BASIN, REMOVING UNSUITABLE MATERIALS AS DIRECTED BY THE GEOTECHNICAL ENGINEER. 6. WHILE SEDIMENT BASIN IS BEING REMOVED, CONTRACTOR MAY LEAVE THE RISER STRUCTURE IN PLACE TO PROVIDE A TEMPORARY SETTLEMENT ARE FOR SEDIMENT. 7. AS THIS WORK PROGRESSES, AND ONCE THE PAD IS AT SUBGRADE, THE CONTRACTOR MAY REMOVE THE RISER STRUCTURE AND ABANDON THE POND DUTFALL PIPE TO THE PROPOSED MANHOLE D1. NOTE MANHOLE D1 IS TO BE USED TO CONNECT THE BUILDING FOUNDATION DRAIN SYSTEM. 8. CONTRACTOR MAY PROCEED WITH THE DIGGING THE REMAINING BUILDING/COLUMN FOOTERS, AND BRINGING THE PAD TO FINAL GRADE. 9. CONSTRUCT THE BUILDING AND COMPLETE THE REMAINING SITE CONSTRUCTION AND STABILIZE AREAS NOT TO BE PAVED OR BUILT UPON WITH PERMANENT SEEDING, MULCH OR LANDSCAPING PER THE LANDSCAPE PLAN. I.Q. CONTRACTOR TO FULLY BLOCK THE FILTERRA STRUCTURES FROM RECEIVING RUNOFF UNTIL BUILDING AND SITE CONSTRUCTION IS SUBSTANTIALLY COMPLETE. FILTERRA STRUCTURES ARE TO REMAIN IN THIS OFF—LINE CONDITION UNTIL ALL UPSLOPE AREAS ARE STABILIZED. 11. REMOVE ALL EROSION AND SEDIMENT CONTROL DEVICES ONLY AFTER THE SITE IS STABILIZED AND PERMISSION IS GRANTED BY THE ALBEMARLE COUNTY EROSION AND SEDIMENT CONTROL INSPECTOR. I HE CONTRACTOR SHALL EMPLOY AN INDEPENDENT TESTING FIRM TO PROVIDE ALL SOIL TESTING REQUIRED FOR THIS PROJECT. REFER TO TESTING REQUIREMENTS UNDER 3.14 ON SHEET 25 OF SITE PLAN AMENDMENT AND SHEET 16 OF VSMP AMENDMENT CONTRACTOR NOTE CONTRACTOR TO FURNISH COPIES OF ALL GEOTECHNICAL REPORTS, MEASUREMENTS, OBSERVATIONS, RECOMMENDATIONS AND TEST VALUES TO ENGINEERING DIVISION, ALBEMARLE COUNTY, ATTENTION: JOHN ANDERSON. (EMAIL PDF`S TO JANDERSON2@ALBEMARLE.ORG) DITCH #2A (0+00 TO 0+56) USE CL 1 RIP —RAP LINING --10' GRADII`iCb EASEMENT DB 4135 PG 249 'DB 4135 PG 215 FLAT EX. DRAINAGE EASEMENT nP A 71 1 ar 7n2 0 20 40 60 SCALE: 1 "=20' # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 „ owner. THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE a PALMYRA, VA 22963 p: 434.242.2866 'I e: mike@30scale.com web: www.30scale.com Z �..,� Z .; Lu Q F m g Js _ i W 0 u v Y .. .. 9 y. � sheet title: 10 scale: @ 2019 - 30 SCALE, LLC r u w 8 0 m Sediment Basin #1 Design 'd1N 1'45B 9PflSY:A'f .etrxcur CRUF 9r UEACE�i`.T drainage area (acres) 7 1 I !I•••ESiGN rllC7i WATER ;,�11ithT basin �o;lumes: (Using Average End Area Method) u € vv) elevation (ft) contour area (3f7 ;olume(cy) as, A82: 2039 __ Vic,. Y - - - ------ 494 3808 216.E 7 ear . .. _. .. 496 5677 _ :. 587.9 i dfrr .• 5T0lit�f i. } " .. OFrthi tfN,3 UME 494 7045 1U61* wr:7 ^ 5MRAct 500: 9718 1704.8_ s - 500.5 19252 1889.5' cnuLn x gym, wet storage, - wet storage required (cy) (67"DA) 475.7', design high water (routed in hydrafow) 498.35 dewateii orifice elevation (1) 495.5' top of clam (it) 5tJQ5 wet storage provided at this, elevation (ey) 480.1 top ividth of darts (It} 6.0 available volume beforectearorat (cy) (33'DA) 234.3 bottom of basin (if) 492.0 cleanout elevation (ft) 494.1 approx. bottorrh dimensions: 201' x 10' distance from cieanout to orifice (11) {> 1) 1.4, upstream face slope, 1 domstream face slope: 2' 1 dry storage: dry storage required (cy) (67'DA) 475.7 baffles: No principle Spillway Crest (it) 497.6; length of flow, L (ft) 105.0 dry storage provided at this elevation (cy) 475.7' effective width We (it) 49 5` diamete- of dewatering orifice (in) (SEE NOTE) 4.0- L 1 We (aaffies regalred If < 2) 2.1 diameter of flexible tubing (in) (orifice*2") 6.0 collars: no runoff depth of water at spillway crest (ft) G (use OA5 for bare earth) 0,75: slope- of upstream face (4-1) tc (min) 10.2, stope 4f barrel (5b) 2yr 4.1 Q 2yr 21.8 length ofbarret in saturated zone (Ls) 25yr 6.0 0 25yr 31.8' number collars required dimension of collars principle spill'aay: available tread (ft) 2.9 emergency spillway: rio darn ier riser (in) 48 required capacity, (02"p) (cis) spillway capacity V head. Op (cfs) 39.9 bottom width (ii) trashrack diameter (in) 72 slope of exist channel (Rift) barn € I leapth (ft) 16.1: ' minimdn length dt'exit channel (ft) head on barrel through embankment (i) g.b` crest of spillway (€t) diameter of barrel fin) 15 Watt irvv. In (ft) 490.4 barrel Inv. Out (ft) 480.21 MTR 25.2 r7CAAFl5lC nl-7 Tll. I AND REPLACE WITH MH-t T P 'Dm cD O 4 SQ (/j 510 rn a 510 o � F- EXISTING GRADE 505 505 SEDIMENT BASIN GRADE 500 ILMILIANKMENT LLLV,-*fJU.!>500 25- R STORM WSE 49836 495 495 LEANOUT ELEV. 494.1' ELE14 492.0' 490 CONNECTION BETWEEN 490 F. R Oc 1 STA 10+30 485 t T:1 L.F. - 485 15' HOPE CONNECTION E ETWEEN �1.1a ER -TIGHT 480 N cli - 480 a r II II C� 1ZII �: 475 v z z ? 3; 475 PROJECT DESCRIPTION THE PURPOSE OF THIS PLAN AMENDMENT IS TO CONSTRUCT A SIX -STORY MIXED -USE BUILDING CONTAINING 20,000-GSF OF OFFICE COMMERCIAL SPACE AND 160 APARTMENTS ON PHASE TWO. NOTE THE PHASE LINE IS TO BE CREATED WITH A BOUNDARY LINE ADJUSTMENT PLAT SUBMITTED CONCURRENTLY. PHASE TWO IS COMPRISED OF APPROXIMATELY 2.66 ACRES OUT OF THE TOTAL BLOCK D2 AREA OF 5.49 ACRES. OVERALL STORMWATER MANAGEMENT FOR THE PROPERTY IS ADDRESSED BY OFFSITE FACILITIES FOR WATER QUANTITY CONTROL, AND A COMBINATION OF OFFSITE LID PRACTICES AND PROPOSED FILTERRA STRUCTURES ONSITE. THE INFRASTRUCTURE FOR PHASE ONE HAS BEEN COMPLETED AND A PARTIAL RELEASE OF THE ROAD AND ACSA BOND HAS OCCURRED, SOME OF THE PHASE ONE CONSTRUCTION WILL NEED TO BE REMOVED TO MAKE A SMOOTH TRANSITION TO PHASE TWO CONSTRUCTION. PHASE ONE INFRASTRUCTURE HAS BEEN COMPLETED AND PADS ARE PREPARED FOR FIVE TOWNHOUSE BUILDINGS (28 TOWNHOUSE UNITS) TO BE CONSTRUCTED. 21 OF THE 49 TOTALTOWNHOUSE UNITS HAVE BEEN CONSTRUCTED IN PHASE ONE. PHASE TWO HAS BEEN ROUGH -GRADED PER THE APPROVED PLANS WITH THE EXCEPTION OF A TEMPORARY STOCKPILE ALONG THE NORTHWESTERN QUADRANT OF THE PROPERTY. A SEDIMENT BASIN THAT WAS SIZED FOR THE ENTIRE DRAINAGE AREA OF 7.01 ACRES IS CURRENTLY IN PLACE AND OPERATIONAL ALONG THE EASTERN EDGE OF PHASE TWO ADJACENT TO INGLEWOOD DRIVE. THE PLANS PROVIDE A CURRENT FIELD TOPOGRAPHICAL SURVEY OF PHASE TWO AND HAVE VERIFIED THAT THE SEDIMENT BASIN VOLUME EXCEEDS THE STORAGE REQUIREMENTS OF 938 CY (439 CY WET STORAGE AND 439 CY DRY STORAGE). HOWEVER, THE SEDIMENT BASIN IS CURRENTLY OVERSIZED SINCE THE PHASE ONE STORM DRAINAGE INFRASTRUCTURE CONVEYS APPROXIMATELY 40% OF THE 7-ACRE DRAINAGE AREA AWAY FROM THE BASIN. THE SITE IS BORDERED ON THE WEST BY A STRIP SHOPPING CENTER THAT HAS ACCESS ON HYDRAULIC AND COMMONWEALTH, AND RESIDENTIAL DUPLEXES THAT HAVE FRONTAGE ON COMMONWEALTH DRIVE. TO THE NORTH IS PHASE E OF THE STONEFIELD DEVELOPMENT WHICH CONSISTS OF APPROXIMATELY 250 LOW-RISE APARTMENT UNITS. HYDRAULIC ROAD BORDERS PHASE ONE TO THE SOUTH, AND THE HYATT HOTEL IS LOCATED ACROSS FROM PHASE TWO TO THE EAST THE SITE WAS ORIGINALLY MASS -GRADED PER THE "ALBEMARLE PLACE EROSION AND SEDIMENT CONTROL AMENDMENT #3 (WPO 2009-00074). THE SOILS THAT ARE ANTICIPATED TO BE ENCOUNTERED INCLUDE ELIOAK LOAM (27B AND 27C) AND GLENELG LOAM (34D). CRITICAL AREAS THERE ARE NO CRITICAL AREAS ON THE PROJECT. EROSION AND SEDIMENT CONTROL MEASURES ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK UNLESS OTHERWISE DIRECTED BY THE ALBEMARLE COUNTY INSPECTIONS DEPARTMENT. THE FOLLOWING EROSION AND SEDIMENT CONTROL PRACTICES (VESCH REFERENCE NUMBER INCLUDED) MAY BE IMPLEMENTED WITH THIS PLAN AND IS NOT AN EXHAUSTIVE LIST: VESCH REFERENCE# 3.01- SAFETY FENCE (SAF) A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. LOCATION AND DETAILS ARE SHOWN ON THE PLANS. 3.02 - TEMPORARY CONSTRUCTION ENTRANCE (CE) A CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT THE ENTRANCE OF THE PROJECT SITE TO PROVIDE A MEANS OF REMOVING SEDIMENT FROM THE TIRES OF CONSTRUCTION VEHICLES LEAVING THE WORK SITE. THE CONTRACTOR SHALL REMOVE ANY MUD FROM THE EXISTING ROAD SURFACE BY MEANS OF SWEEPING AND SHOVELING, IN THE EVENTTHE WASH AREA IS NOT ADEQUATE IN SEDIMENT REMOVAL. 3.03 - CONSTRUCTION ROAD STABILIZATION (CRS) THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS, AND OTHER ONSITE VEHICLE TRANSPORTATION ROUTES WITH STONE IMMEDIATELY AFTER GRADING. 3.05 - SILT FENCE (SF) SILT FENCE PROVIDES A VISUAL BARRIER AND IS EFFECTIVE AT CONTROLLING LESS THAN 100-FEET OF UPSTREAM SHEET FLOW. SILT FENCE LOCATIONS AND DETAILS ARE SHOWN ON THE PLANS. 10+©a 11+00 PROFILE vfEw: 3.07 - INLET PROTECTION (IP ) SEDIMENT BASIN OUI ALL A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDMENT AREA AROUND A STORM DRAIN DROP INLET OR CURB INLETTO MINIMIZE SEDIMENT FROM ENTERING THE STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. i b- - ` ; , ► i, (TAKEN FROM APPROVED SITE PLAN BY WW ASSOCIATES, SDP2014-0070 SHEET 15) SHEETS OF 4• X ' X Ile f `€Cftft f>LYWDOD OR EQUIVXZW V I ur fir rLYVVUULJ ® 495.1 F- DER GRIST E.EVAMN =497.6 POSTS MIN. SIZE V Mill OR .57 ROUND. SET A7 LEW 3' INTO THE GROUND. 1MA I ' ry ,' 1 _ I III 1 1111 3.09 - DIVERSION DIKE (DD) A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS DISTURBED RIGHT-OF-WAY AND SIMILAR SLOPING AREAS. LOCATION AND DETAILS OF THE RIGHT OF WAY DIVERSION ARE SHOWN ON THE PLANS. 3.1.1- RIGHT-OF-WAY DIVERSION (RWD) A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS DISTURBED RIGHT-OF-WAY AND SIMILAR SLOPING AREAS. LOCATION AND DETAILS OF THE RIGHT OF WAY DIVERSION ARE SHOWN ON THE PLANS. 3.14 - TEMPORARY SEDIMENT BASIN (SB) A TEMPORARY SEDIMENT BASIN WILL BE INSTALLED BEFORE SITE GRADING BEGINS, FOR THE PURPOSE OF DETAINING SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS. A SEDIMENT BASIN CONSTRUCTED WITH BLOCK D2 - PHASE ONE WORK IS EXISTING AND IS LOCATED ON PHASE TWO. 3.31- TEMPORARY SEEDING I TO THE MAXIMUM EXTENT POSSIBLE, TEMPORARY SEEDING SHALL BE APPLIED TO DENUDED AREAS THAT REMAIN DORMANT FOR 7 DAYS. SEEDED AREAS SHALL BE LIMED WHEN NECESSARY AT A RATE OF 2 TONS/ACRE, AND FERTILIZED AT A RATE OF 600 LBS/ACRE OF 10-20-10 (14 LBS. PER 1,000 SQUARE FEET) OR EQUIVALENT. CONTRACTOR SHALL SELECT TEMPORARY SEEDING PLANT MATERIALS FROM TABLE 3.31-B OR C FROM THE VESCH. 3.32 - PERMANENT SEEDING (PS) A PERMANENT VEGETATIVE COVERING SHALL BE ESTABLISHED ON DISTURBED AREAS WITHIN 7 DAYS OF BEING BROUGHT TO FINAL GRADE AND THAT WILL NOT BE PAVED OR OTHERWISE BUILT UPON. CONTRACTOR TO SELECT THE PERMANENT SEEDING MIXTURE IN ACCORDANCE WITH THE SPECIFICATIONS IN THE VESCH. 3.35 - MULCHING (MU) ALL SEEDED AREAS SHALL BE MULCHED WITH STRAW IMMEDIATELY FOLLOWING SEEDING OPERATIONS. STRAW MULCH SHALL BE APPLIED AT A RATE OF 1.5 TO 2 TONS/ACRE. OTHER ALTERNATIVES MAY BE SELECTED FORM TABLE 3.35-A OF THE VESCH. EROSION AND SEDIMENT CONTROL MEASURES - MAINTENANCE 1. THE CONSTRUCTION ACTIVITY OPERATOR OR HIS DESIGNEE, SHALL INSPECT ALL EROSION AND SEDIMENT CONTROL DEVICES IN ACCORDANCE WITH THE SCHEDULE PROVIDED IN THE GENERAL CONSTRUCTION PERMIT. IT IS RECOMMENDED THAT DEVICES BE CHECKED EACH DAY AND CERTAINLY AFTER EACH RAIN EVENT, AND THAT REPAIRS ARE MADE IMMEDIATELY AND AREAS ARE RE -SEEDED AND MULCHED AS APPROPRIATE. 2. ALL SEDIMENT -TRAPPING DEVICES AND FENCES SHALL BE CLEANED OUT AT 50 PERCENT CAPACITY OR HEIGHT, AND SEDIMENT SHALL BE DISPOSED OF BY PUMPING INTO A SILT -SACK OR OTHER APPROVED MEANS. 3. GRAVEL OUTLETS SHALL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP AND BE CLEANED WHEN SEDIMENT IS VISIBLY CLOGGING THE VOID SPACES. 4. DIVERSIONS SHALL BE CHECKED TO ENSURE PROPER RE-ROUTING OF DRAINAGE. DAMAGES THAT INTERRUPT THE EFFECTIVE FUNCTIONING OF THE DIVERSION SHALL BE REPAIRED IMMEDIATELY. 5. ALL SEEDED AREAS SHALL BE INSPECTED REGULARLY TO ENSURE THAT A VEGETATIVE COVER IS BEING ESTABLISHED. IN THE EVENT THAT THE SEEDING DOES NOT TAKE, CONTRACTOR TO TROUBLESHOOT AND TAKE REMEDIAL ACTION UNTIL THE APPROPRIATE VEGETATIVE COVER IS ESTABLISHED. COUNTY) 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 SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND CONTROL SEDIMENT 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. S. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS FOR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS, 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT 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 OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHTTO INSTALL, MAINTAIN, REMOVE OR CONVERTTO 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. EROSION AND SEDIMENT CONTROL PLAN MINIMUM STANDARDS (PER 9VAC25-840-40) 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, OR 7 DAYS IF REQUESTED BY THE LOCAL INSPECTOR. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 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. 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. 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. S. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. 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 CAPAC1° TY 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. 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. 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. 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. 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. 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. 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NON ERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. 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. 14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. I.S. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. EROSION AND SEDIMENT CONTROL PLAN MINIMUM STANDARDS (CONT'D) (PER 9VAC25-840-40) 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. 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 ATTHE 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. 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. 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. THE SITE COMPLIES WITH MS-19. i 01 ANTICIPATED START DATE: SEPTEMBER 2019 ANTICIPATED COMPLETION DATE: AUGUST 2020 $, . 1. INSTALL PAVED CONSTRUCTION ENTRANCE AS SHOWN ON PLAN. 2. CONTRACTOR TO MAINTAIN SAFE AND SEPARATE INGRESS/EGRESS TO PHASE 1 FOR RESIDENTS AND BUILDING CONTRACTORS THROUGHOUT CONSTRUCTION. IN THE EVENT THAT THE ACCESS NEEDS TO BE TEMPORARILY BLOCKED FOR SAFETY PURPOSES, CONTRACTOR TO PROVIDED FLAGMEN TO CONTROL TRAFFIC AT ALL TIMES. 3. ENSURE EXISTING SEDIMENT BASIN IS OPERATIONAL AND THAT EXCESS SEDIMENT HAS BEEN REMOVED IF THE LEVEL HAS REACHED THE CLEANOUT ELEVATION OF 494.5. ENSURE THE DEWATERING STRUCTURE IS OPERATIONAL. 4. INSTALL RIGHT-OF-WAY DIVERSION AT INTERSECTION OF CASH ALLEY AND KOBER WAY AS SHOWN. 5. INSTALL PERIMETER CONTROLS TO INCLUDE SAFETY FENCE, SILT FENCE AND DID #2A AS SHOWN. 6. PERFORM DEMOLITION AND ABANDONMENT OF CURB, PAVEMENT AND UTILITIES AS DIRECTED BY THE E+S PHASE 1 PLAN. 7. ENSURE WATER METERS ARE RETURNED TO THE ACSA FOR CREDITS AND THAT ALL WATER AND SEWER UTILITIES ARE ABANDONED IN ACCORDANCE WITH THE REQUIREMENTS OF THE ACSA. 8. INSTALL STORM SEWER PIPE RUN FROM EXISTING STRUCTURE 27.2 TO STRUCTURE 7, AND FROM EXISTING STRUCTURE 23.2 TO STRUCTURE 2 TO STRUCTURE 2A. PROVIDE DROP INLET PROTECTION FOR STRUCTURES 7 AND 2. 9. INSTALL TEMPORARY DIVERSION DIKES #1 AND #2 AND #2A AS SHOWN ON THE PHASE 1 PLANS. THESE DIKES ARE TO BE EXTENDED TO STR 7 AND STR 2 RESPECTIVELY. IMMEDIATELY PROVIDE TEMPORARY SEEDING TO DIKES, ESPECIALLY ON THE WEST SIDE, SO THAT VEGETATION CAN BE ESTABLISHED AS SOON AS POSSIBLE AND THE DIKES SHALL MORE EFFECTIVELY FUNCTION AS "CLEAN WATER DIVERSIONS" THAT WILL DIVERT RUNOFF FROM OFFSITE UNDISTURBED AREA TO STORM DRAIN INLETS WHICH WILL PIPE THE CLEAN WATER AROUND THE CONSTRUCTION AREA. DIKE #2A IS TO PREVENT RUNOFF FROM FLOWING ON TO THE ADJACENT STONEFIELD COMMONS PROPERTY TO THE NORTH. 10. FOLLOWING COMPLETION OF THE CLEAN WATER DIVERSIONS, CONTRACTOR MAY CONTINUE TO PERFORM SITE GRADING OPERATIONS TO ACHIEVE ROUGH GRADE ACROSS THE SITE. 11. ONCE ROUGH GRADE IS ACHIEVED, THE CONTRACTOR MAY PROCEED TO PHASE 2 CONSTRUCTION WITH THE APPROVAL OF THE COUNTY E+S INSPECTOR. PHASE 2 WORK 1. INSTALL REMAINING STORM SEWER STRUCTURES AND PROVIDE INLET PROTECTION. 2. PROVIDE DIVERSION DIKE #3 ALONG THE PROPOSED CURB LINE WEST OF THE PROPOSED BUILDING PAD. 3. AT THIS POINT OF THE CONSTRUCTION, ALL DISTURBED AREA OUTSIDE OF THE BUILDING PAD WILL BE DIRECTED TO A PROTECTED STORM DRAIN INLET. 4. THE CONTRACTOR MAY BEGIN TO GRADE THE BUILDING/PODIUM PAD AND DIG THE PERIMETER FOOTERS ON THE WEST SIDE OF THE BUILDING, MOVING TO THE EAST TOWARDS THE SEDIMENT BASIN. 5. AS THIS WORK PROGRESSES, CONTRACTOR MAY PHASE THE FILLING OF THE SEDIMENT BASIN, REMOVING UNSUITABLE MATERIALS AS DIRECTED BY THE GEOTECHNICAL ENGINEER. 6. WHILE SEDIMENT BASIN IS BEING REMOVED, CONTRACTOR MAY LEAVE THE RISER STRUCTURE IN PLACE TO PROVIDE ATEMPORARY SETTLEMENTARE FOR SEDIMENT. 7. AS THIS WORK PROGRESSES, AND ONCE THE PAD IS AT SUBGRADE, THE CONTRACTOR MAY REMOVE THE RISER STRUCTURE AND ABANDON THE POND OUTFALL PIPE TO THE PROPOSED MANHOLE D1. NOTE MANHOLE D1 IS TO BE USED TO CONNECT THE BUILDING FOUNDATION DRAIN SYSTEM. 8. CONTRACTOR MAY PROCEED WITH THE DIGGING THE REMAINING BUILDING/COLUMN FOOTERS, AND BRINGING THE PAD TO FINAL GRADE, 9. CONSTRUCT THE BUILDING AND COMPLETE THE REMAINING SITE CONSTRUCTION AND STABILIZE AREAS NOTTO BE PAVED OR BUILT UPON WITH PERMANENT SEEDING, MULCH OR LANDSCAPING PER THE LANDSCAPE PLAN. 10. CONTRACTOR TO FULLY BLOCK THE FILTERRA STRUCTURES FROM RECEIVING RUNOFF UNTIL BUILDING AND SITE CONSTRUCTION IS SUBSTANTIALLY COMPLETE. FILTERRA STRUCTURES ARE TO REMAIN IN THIS OFF-LINE CONDITION UNTIL ALL UPSLOPE AREAS ARE STABILIZED. 11. REMOVE ALL EROSION AND SEDIMENT CONTROL DEVICES ONLY AFTER THE SITE IS STABILIZED AND PERMISSION IS GRANTED BY THE ALBEMARLE COUNTY EROSION AND SEDIMENT CONTROL INSPECTOR. NOTE: CONTRACTOR TO FURNISH COPIES OF ALL GEOTECHNICAL REPORTS, MEASUREMENTS, OBSERVATIONS, RECOMMENDATIONS AND TEST VALUES TO ENGINEERING DIVISION, ALBEMARLE COUNTY, ATTENTION: JOHN ANDERSON. (EMAIL PDF'S TO JANDERSON2@ALBEMARLE.ORG) F I E LD L4UALITYT L T IL TESTI THE CONTRACTOR SHALL EMPLOY AN INDEPENDENT TESTING FIRM TO PROVIDE ALL SOIL TESTING REQUIRED FOR THIS PROJECT. REFER TO TESTING REQUIREMENTS UNDER 3.14 ON SHEET 25 OF SITE PLAN AMENDMENT AND SHEET 16 OF VSMP AMENDMENT MANWISTLIPI # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 owner: THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com Q j z i 7 Z =) Y \ 3 O ;MUj :z LU I� e i { 4 p 1 g CL jX S k LL1 r14 9 LUOmni t s ff \ u r € E 1.0 1r s y �a k a SQ Q t i I � z 0 i � I M LF. S Lic. Nc�. 33028 • © 12/16/2019 tV A L 0 2019 - 30 SCALE, LL( DL 0 CK GRA 1,7EL CURD INLET BLOCK AND GRAVEL DROP INLET CONSTRUCTION OF A SILT FENCE (W-ITH WIRE SUPPORT) ,S'EDWEXT FIL"TTR SEDIMENT FILTER I SET POSTS AND EKCN)/ATE A 4"X4' Z STAPLE WIRE FENCIP40 TO THE POSTS, TRENCH UPSLOPE ALONG THE UN�E 7 w o y O� POSTS� CURB INLET WIRE SCREEN C KCRETE BLOCK ACCESS 3' -��M-2A, ASPkAL1 TOP 25's Pk& MENT ------------ b P,ROFILE Jill I THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 51-ONE 70, 22124 comsmucnlu A6PHALT PAVED ----------- N engineer: ACCESS WASHRACK FLOW 77/ VVIRE SCREFN ­_RVTE BLOCK 30 SCALE, LLC 4 % 871 J USTI N DRIVE r EXT)NQ CR-XVF-L FILTER :2z hDIT PAVEN PALMYRA, VA 22963 12% 12, MIN"* 3. 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EVE IN TO PR, JNT EXCESSIVE PONDING FRONT OF THE STRUCTURC� appioved setdhkzg� area to remove sediment; All �seclitu6tshag be Prevented filt All' or ivatercoursts, eattraig, stomi d ditches FIT, wGIRAVEL SlIALL BE VDOT :#3. #157 GR #5 COARSE AGGREGATE' - GRAVEL SHALL BE Myr #a, #357 OR #5 COARSE AGGREGATE P"ED WASH RACK -ST0Rrvi7nLETmA­Arq�- aN Source. Adapted frora, -iijkt-allat X iog-of Stxaw 4nd FAbric Filter B < A[de_irs f9r Sediment Control. Sherwood and Wyaut Plate 3.05-1 Sourice: Va. DSWC Plate 3.(Y7-8 Source.* Va. DSWC Plate 3.07-3 C) z ------ LU r14 I P INLET PROTECTION INLET PROTECTION rn `0 BLOCK AND GRAVEL CURB INLET SEDIMENT FILTER BLOCK AND GRAVEL DROP INLET SEDIMENT FILTER CF) z VESCH STD. 3.07 VESCH STD. 3.07 LU Z ,q q < im 1992 3.36 1992 3.18 Q0 1992 3.36 CL CL LID :X T -2 TYPICAL TREATMENT 2 TYPICAL TRE,,.4 TMENY P.[P-E' OUTLET CONDITIONS TElfiPOR-ARY DIVERSION DI1fAP CO C"4- > SOIL STABILIZATION SOIL STABILIZATION MATTING A ,A 10 MATTING INSTALLATION S PE INSTALLATION SOIL STABILIZOMON MATTING SH0VI BE W Compacted Soil USED IN C0NjUr4CnoN wfm, Pimp WIT, Ar OTTLET ENO OF PIPE d FILL SLOPE SELCTION--- rm in 4- SOIL ZTAWLIZATION WTS SHOULD PIPE OUTLET TO FLAT ­rf low RE, 114STALLED 'VEFMCA MM, SLOPE SURFACE AREA WITH NO DEPaTED DOWNSLOOC FOR AM MULTS. SKALL ISE SM0079 LLY 1� AN , " 11 AND FREE OF MANUEL ROC)�S, LUMPS,DF FLALN VIE W GPr. GW3 AW R STICKS. M6T `S�L 11111 Emmill BE PLCED FLAT KFACE MR LLJ ON 4�5' rnin. P119PER SOIL L rn 4-ZA WWACT. 7 s, a "T- ENCH E0(;ES 4 -------- * OF' M AITRX 6, < d DIVERSION DIKE Dff% L=1 Q SECTION A -A vivrEp CLO-ft"I KEY IN V_Ir� I commmow FDR E'NTIP-0 PERIMETER, VESCH STD. 3.09 < NOTE: FOR RIGHT-OF-WAY DIVERSION, CONTRACTOR MAY USE ASPHALT DIKE CHEC-k M,0TS TO BE 611ft SHALL I- CON-5TRUCIEU M. PER 5' TAMPERED PRIOR MovqrAQTVRER5 RCCOMME- DATIGNZ� TO UOINO TOP A L4P QVUM SAFE TY FENCE 0 3d (NIIN.) 'g TOE BERM A VAWAIN SLOPE ANGLE TRE14CH INTO KRM AND < SS DOWNSLOPE T f,'LOSED CHECK d mry,, oumpm TO WELL J" -�­Iyjp OF DEFIIJE6 CKANNE1 UPSTREAM ANb' SLOPE LINING SLOPE LINING LW �Itwrr PIAR VIEW Dw DOWNSTREAM �_WfLfj _L0_P_Q (DRY SLOPE) TERMINAL La L F. S YEK Lic. No. 33028 NEEDLE FUNCI. 0) TREAMU4T r, OV GE01E)MEE FILTER TO 2/16/20 19 SECT101"I A -A T FILTER CLOTH KM,' IN 9�W� RX0JAMENDu Fop ENTIRV PER111tTER IRANSMSK 31011TOM OF FILL SLOPE NOTES- 1. APR N LININt! JJAY 84 MPW, CjR0`U4*ED fflftAP, QAEijoll OPEN CHKK SLOT uNAL BASKET, oft CONCJR�T!7 2- -ya'IS THE LENGTH OF TWE RIP",R4�P APRO14 AS CALICUIXrElr) USING PLATa,4L3;f8_j AND 3, d - 1.5 TIMES TA. MAXIMM MONE: OJAMMR, 13UT NOT BOTTOM OF OU LOPC LE� Tito $Ncags- ' ER BOTTOM OF OUT SLOPE PERSPE(JIVE VIEW ........ sheet title: Source: VDOT RgLd and Brid, Standards Plate, 1364 Source. Va. DSWC Plate. 3. 18-1 Source: VDOT Road gna, Bridge Standards Plate 3,36-5 EROSION AND SED"IMENT B B SOIL STABILIZATION BLANKETIPMATTING SOIL STABILIZATION BLANK"T MATTING m m CONTROL TREATMENT 2 (VDOT STD. EC-3) TREATMENT - 2 (VDOT STD. EC-3) - - ----- VESCH STD. 3.36 VESCH STD. 3.36 DETAILS LO M tuo sheet # '4 -_W­ PERSPECTIVE VIEW PERSPECTIVE VIEW 20F16 REVISIONS PLASTIC FENCE METAL FENCE 4 DESCRIPTION DATE scale: 00 I COUNTY COMMENTS 7/8/2019 1 =20' 2 COUNTY COMMENTS 8/28/2019 SAF SAFETY FENCE LU date: 3 SIGNATURE SUBMISSION 10/31/2019 VESCH STD. 3.01 3/4/2019 SHEET NO. DRAWING NO. 1 OF 32 C-1 3 OF 32 C-3 18 OF 32 C-18 19 OF 32 C-19 20 OF 32 C-20 21 OF 32 C-21 24 OF 32 C-24 25 OF 32 C-25 26 OF 32 C-26 27 OF 32 C-27 28 OF 32 C-28 STONE. FIELD BLOCK VSMP PLAN AMENDMENT TITYE COVER SHEET GENERAL NOTES, ABBREVIATIONS & LEGEND STORM DRAINAGE AREA MAP STORM DRAIN CALCULATIONS BMP ANALYSIS AREA MAP STORMWATER MANAGEMENT CALCULATIONS AND DETAILS PHASE I EROSION AND SEDIMENT CONTROL PLAN PHASE II EROSION AND SEDIMENT CONTROL PLAN PHASE II EROSION AND SEDIMENT CONTROL PLAN EROSION AND SEDIMENT CONTROL NARRATIVE & DETAILS EROSION AND SEDIMENT CONTROL DETAILS ALBEMARLE COUNTY, VIRGINIA NOTES: 1. COORDINATE PLANS WITH ALBEMARLE PLACE EAAP, LLC RELATED PROJECTS: • ALBEMARLE PLACE/EROSION AND SEDIMENT CONTROL PLAN AMENDMENT NO.3 (WP02009-00074) • ALBEMARLE PLACE/STORMWATER MANAGEMENT PLAN AMENDMENT NO.4 (WP02010-00023) 2. THE STONEFIELD DEVELOPMENT WAS FORMERLY KNOWN AS ALBEMARLE PLACE. 3. THE PURPOSE OF THESE PLANS IS TO SHOW THE BUILDING DEVELOPMENT PLAN FOR TOWNHOMES IN THE D2 BLOCK OF STONEFIELD. 4. THE ALLEYS SHOWN ON THESE PLANS ARE PRIVATE AND MAY NOT MEET THE STANDARDS FOR ACCEPTANCE INTO THE SECONDARY SYSTEM OF STATE HIGHWAYS AND WILL NOT BE MAINTAINED BY THE VIIRGINIA DEPARTMENT OF TRANSPORTATION OR THE COUNTY OF ALBEMARLE. 5. MAINTAIN ACCESS TO EXISTING DEVELOPMENT ROADS AT ALL TIMES. WHEN CROSSING ROADWAY IS REQUIRED, INSTALL PROTECTIVE CONSTRUCTION MATTING AND WARNING SIGNS. PROVIDE FLAG MEN AND ANY OTHER TRAFFIC CONTROLS, INCLUDING TEMPORARY LANES AS REQUIRED TO MAINTAIN ACCESS. 6. STREET SIGNS SHALL BE INSTALLED BASED ON THE EXISTING SIGN CONFIGURATION ON THE COMPLETED PORTION OF THE STONEFIELD DEVELOPMENT. 7. COORDINATE FINAL SITE PLAN AND VSMP PLAN, 1. ADDRESSED COUNTY COMMENTS RU 4/17/ 15 2 ADDRESSED COUNTY COMMENTS RU 5/12/ 15 3 ADDRESSED COUNTY COMMENTS RU 6/5/15 ---- 4 SIGNATURE SET RU 6/22/15 Irk SHEET- REVISION BY I DATE NO, SHEET REVISION BY I DATE VICINITY III' SCALE: 1 "= 2000' 61 M LF. S I ic. No. 33028 12/1612019 �w �sS I ON A L ME SIGNED FOR INFORMATIONAL PURPOSES ONLY INFORMATION D ELOPER/APPLICANT: ALBEMARLE PLACE EAAP, LLC, C/O EDENS, INC. 7200 WISCONSIN AVENUE SUITE 400 BETHESDA, MD 20814 (803) 760-9687 ATTN: STEVE TEETS EMAIL: STEETS@EDENS.COM ENGINEER: WW ASSOCIATES, INC 3040 AVEMORE SQUARE PLACE CHARLOTTESVILLE, VA 22911 (434) 984-2700 ATTN: HERBERT F. WHITE III, P.E. EMAIL: HWHITE@WWASSOCIATES.NET SOURCE OF TITLE: THE PROPERTY AS SHOWN ON THIS PLAN IS THE PROPERTY CONVEYED UNTO ALBEMARLE REALTY (E&A), LLC, BY THAT CERTAIN DEED DULY ON RECORD IN THE CLERK'S OFFICE OF THE CIRCUIT COURT OF THE COUNTY OF ALBEMARLE, VIRGINIA IN D.B. 4135, PG. 384, DB 4135 PG. 215 (PLAT) AND IS INDICATED AS TAX MAP PARCEL TMP 61 W-3-23. SOURCE OF BOUNDARY SURVEY: DATED: SOURCE OF TOPOGRAPHY: COUNTY, STATE: MAGISTERIAL DISTRICT: WATER PROTECTION AREA: TAX MAP/PARCEL: ZONING: EXISTING USE: PROPOSED USE: Apw ENTGINERS SURVEYORS PLANNERS ,ASSOCIATES PO Box 4119 30410 ticempre Sgim,'e PI. Lymhbur" VA 24502 VA 229T1 Phone: 4a4. 16.6030 Phone: 434,934.2700 ww w. %V was�uclalcs.ucl WW ASSOCIATES, INC AUGUST 28, 2014 WW ASSOCIATES, INC BY FIELD SURVEY PER' rk VRMED ON: OCTOBER 16,, 2014 ALP MARLE COUNTY, VA JACK JOUETT NIA. (NON -WATER SUPPLY WATERSHED) TM 61 W, PARCEL 3-23 NIID (NEIGHBORHOOD MODEL DISTRICT) ENTRANCE CORRIDOR VACANT RESIDENTIAL DESIGNED BY: PROJECT. RU STONEFIELD BLOCK D2 DRAWN BY_ FINAL .SITE PLAN Ta ALBEMARLE OUNT� VIRGINIA TITLE. DIHR BY: COVER SHEET DAM WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: DATE: 21407 .02 407502 C VSMP-dwg CIVIL H: NIA 11114114 V: N A SET REV. NO. 4 DRAWING NUMBER: C-1 SHEET NUMBER: 1 of 4343 SHEET 13 OF 16 th A. t+' C4 04 Fy IF iWPO 2014-00096 VSMPA 7-8-2019 SHEET 14 OF 16 tm CJ 0 R EL ui eq s vi 4) 1 u, V s� 1�UR6 iNL.l=1 FILTERRA ' Jd�LIT C'LLLLL' A_L- PLAN VIEW STANDARD' TRANSITION FROLEV 'A' MUST CURB AND STANDARD TO BE HIGHER GUTTER DEPRESSED THAN ELEV'13' (TYP) �GUTTER (TYP) SL�PIc � --- . • - x -, FILTERRA THROAT • 'U4; .. a� .� .-- �. �� •: � OVRE; tl iR TJiRQAJ GUTTER R. FLOWOUirE FLOW DEPRESSED GUTTER AT L FILTERRA V BYPASS CURB INLET THROAT OPENING (TYP) FLOWLINE ELEY'A` FLOWLINE ELEV'W ELEVATION VIEW STnRvWATER INTERLOCKING _ FILTER.RA UNIT ar STRUC;JURE JOINT (TYP) I s - 5 f. f ' El-I� F 0 i - OlF!£S P7RF C`1 O - f 1^ B`r _TREKS ) - CONNECT I tr, ( n � „y '€tr `�fORlA (?RAIN L f f � f -----------------f . •F I EFFLUENT a R PERFORATED L INVERT0 cp-4R'T F AtF-R 3 -6' S MW. UNDERDRAIN SYaTEtii t ) srllvcruR BY AMERICAST €FFLIVEW 1N (MUST 5E LOWER) CROSS SECTION MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY -WRITTF---N AUTHORIZATION FROM FILTERRA DATE: 07-07-06 OWG.: FLP-2 UU'LIL Lns)L1 .� FiLTEI RA& TYPICAL FLOWLINE yr c AND OULET PIPE RELATIONSHIP US PAT 6,277,2,2 74 AND 6,56EJ,321 t SO Filterra Standard Plan Notes fittefra Construction & Installation V - Ei according tit the sizes o e ; et tic tis and ele attar. unit shrill lac constructed at the. lu 1 � A. LS:iP11 1 shown on the approvod d.n, w Tigs. Any modifications to the elevation or Location shall be at the d.irectiou of and approved by the Eugineer- B. If the filterru is Stored before inscaliatian, the top slab rout be placed on die box using the 2x4 wood provided, to prevent any L00tanritU tiOn ftnm the site. All inlental fiUi.ngs supplied (if airy), must be Iett in place as per the delivery. (:,'The unit shall be plat cd. on a ewnpaaed sub -grade with ii niinitmturt 6-inch gravel baso matching the final grade of slut curb lime in the area of the wit_ The unit is to be placed such that the. unlit and toga stub match the grade of the curb in [lie aLea of- i.ire unit. Cump:art widisturhed. sub-gtad ruatet'ials to 9 % of maxi.nmrn density' at I I- -2% of op,innun,moisture. Unsuitable material below sub-yntcle shall be scpla.:cd to the Simeagineer`s appriaval. D. C)tatict connections tihall be alipued imd s.Qatfed to inca the approved drawings with modifications:nectasary to meet sitc conditions dial local ftgulntiuns. F. Once. the unit is set, hire tiilvillal woOdc , ror nsfi fklitl prgtcuti t0 moll, uo{ ,'4'I Ir111.sl be lefl intact- Pewove urdy the temporary wooden shipping lS'lu ks betmceeti the box and tap slab. The top lid xhould be sailed unto the box section be.fine backtilling, u-,ing u nom- shrink grout, butyl I'tibber or Similar' waterproof seat The bo<rrds oil top rrf the lid and boards sealed .i.p the unit's thro-at must NOT be rr:rnoved, The. Supplier (Ar iericast ar its afichorizcd dealer) will remove theae.sec:tious at the time of activation. Hare lling ;Should be perfumed in a earelul maiincr, bfingii?g the upprapriate fill. I aterial up in 6" lifts on all sides. Precast ectiaua shall be. sett in a. manner that will. result in a wvatertight juittt-.:fr1 till i35tanecs, basrallation of Filterra$0 unit shall conform to F1SThl sp. cii;carian te,91 "Staud'ard Practice for In tallation of UIndergr ound Pret�ust utility i5tructtues", tutlea& •diF'ec"ter{ othcltiYisz in ecantrrct YLe>c.urnOtlts. F. Curb acid gutter construction (where, pr;xsent) shall ensure thatthe flow -lice oaf the Fiitcrla" units is at a greater ;levatiou than the flow -line of the bypass structure of tQlief (sirup inlet, Curb eLa or siuiilar�, FLtilwQ. to eomipoly with this guidriffic may curse failure andJor damage to the Filters eiwimnmental device. G. Mach hiltetrii� urtit nILt*t receive adequate irrigation. to MStireaLrrvitVal Of the li-Misr,?; s_ystern dur-itig periods of drier weather. This may be achieved. through a piped. systern, gutter Ilocc or throu0i the tree grate_ D7101, 'fi vw• Y.tiltzrra'.cont 26 CROWNED FLUME FLUME - SLOPED P,REUf%T FILTERRA TOWARDS FILTERRA THROAT TOP SLA13 (TYP) 7 PRECAST FELrtR@f! THR<OAr FILTERRA 'TRP .1A3 f OPEIaJP1r TYP �-. t ,.J Ia >.. 4 ti" FO.:rERRlc r GllR6 J THROAT OPENING- 4-6" OPEttI 3' X< f PFJJtNG •'" f ,f - -, e4 GVIIEf; 7 (SLOPEr3- TOWARf) PREc;AST / c R4WEE_ FILTERRATHTR FILTERRA CAST -IN -PLACE -- (TYP). t ` BOX 'WALL FLUME & G,,MER PREOAST -: DiiN:Et' Oyp) (CROWNED AND SLOPED - _FILTEifR.?.; --� - TO.W,10) FILTERRA THROATS) E�7WALL SECTIONS VIEWS OF FILTERRA. IN TYPI:GAL FLUME APPLICATIONS :SEE. BELOW FOR DETAWS NOT: SHOWN STANDARD 90' NOSING (OTHER NOSING AVAILABLE UPON REQUEST) --_ PRECAST TOP SLAB 4-6" CLEAR THROAT OPENING O 4.0 -„� DEPRESSED GU TTER"' _ A' 'I _ G 1 � AND THROAT OPENING: Y f • - #4 DOWEL BARS 9 12" O.C. BY AMEPICAST TO BE BENT AS NECESSARY BY CONTRA CTOR PRIOR T0 INSTALLATION OF FI ELD POURED GUTTER TTE. R 3 Al IHRO ' _ PR01YEVI' - DEVICE ECI10E .51 I` rl DO NREMOVE LE AVE JE l 1N PLACE UNTIL SITE ,S < t STABILIZED AND FILTERRA t IS ACTIVATED RE A I . . P CSC BOX WALL I M POR'T'ANT FILTERRA FLOi•/LINE MUST BE AT A HIGHER SECTION VIEW ELEVATION THAN BYPASS STANDARD FILTERRA THROAT OPENING Fl_ri'ELINEOT (DROP INLET OR MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEISi ALtrHORiZATION FROM FILTEFRA DRAWING AVAILABLE IN TIFF FILE FORMAT, DAE, D r 27_06 CWG ccr- l •d FIL1'RR14:@ THROAT OPEIVIN191 � 5I AND GUTTER OR FLUME DETAIL US PAT s,277,274 AND 6,569,321 B� yr i:�Ctl aTnO Lfi h-rr - p,. A. iT,.G rvattLn performed �iLY 1� ter. purchaser a c.t fY1e Filt a unit is s, formed C�. t Llie S1i 1 . eTF p 7 FP ti. responsible, _ti for ilterra inlet .i'Citectiun arid subse ttelll Clean out cost Phis process k k P n 1 cannot coEtimenez tintil the pm>p-ct site .is fully stabilized and cicapad (Full �" i lan,dsc:a �= and � i Sweeping t, nt let.° nc attic ih€: in r- rats covet [t t.d. 1v >tree s e a c.d 1 ,,.6 F F g P � f ch• n ,f 'materials= colttamitratinU the Ffi t � � ,`}i• hail r a cL. c urn tr r, fi rn Iterra s sl,:trr. C:arc, > a b 4 t3 �� r t "4 -f � throatand leer r - to a r re th ti tlir a an .a talcs. dL rmp, t,c)>,Sirtt>LtI �u nuF Tu d � l g a pr Tt�c. vs o j . p p B. Aelivatioir hAkdes hislalhllion_rrfpIRIA(s) and mulch layers as 11"essa.ry. Included Nlahtteuauce A. rich correctic instahed t°ilwrrau unit is to hc- maliah1w by the appplier, of a supplier approved contractor for a 111ihirntrin Period off year. 'the cost of this service is do be inch d---4 in the price of each Filtetfa_(uAt. Extended mairiteuance cautr.tt t 3r�.avulal7le a[ ext�ati©sh utat�n rcguesL Ti, A[Tuusl hu luiied maincenaiic ..ew ist5 of a 111aXiinnIni of (2) scheduled visits- The visits art, sclazdarled seasonally; the spring Visit aw)I to Cleata up after winter loads t11<-A may include salts aria sands. Tile fall visit helps the system by removing excel -live leaf litter, C. Parh included Nfaiutcnance visit consists of the folinwing tasks, 1. Piht!UaJ' unitinspecpiOn 2, Foreign debris, silt, mulch & Trash removal 3. FilWr irledia e.vatuation aticj sort arg-v ;is ncce6salry 4. Plarlt health ovatuatiott au$ pnliLiiia nr:replaeelncnt as nccessary 5. hcplaccrrtent or mulch 6. Dispysil ufall inainten;<rwr refuse itenvs 7. Maintenance records updated and stored (roliotu available upon request) D. Tliu be inniii x and endin duty of ; u alit Cs obu ation to tnainFaiu the inn rat g ;; � pl i� st leci SyaA4:m shall be determined by the Supplier at The time the systeu�t is'stGtivated. 0 whets hoist promptly notify the Supplier of any damage to the plants);which constitute(s) an integral part of the biorelenlion technolon,. 47:YT:;i); tvs�w fil[erca,cilllw 61 " M LF.iV S SIGNED FOR Lic. No. 33028 INFORMATIONAL PURPOSES 12/16/2019 ONLY �� &S10NAL � ------ -------------__-._7 1 3 1 I ! I E r - --` ----- ---- i i I E I I I E 7 E 1 E E -- L--------- - - - - ;- PLAN VIEW � NLET SHAPING (BY OTHERS) A SDR-35 PVC COUPLING CAST INTO PRECAST BOX WALL BY AMERICAST (OUTLET PIPE LOCATION VARIES) CURB (B'Y OTHERS) TREE FRAME PLANT AS SUPPLIED CLEANOUT COVER c GRATE_ 13Y AMERICAST _ GALVANIZED CAST 'IN TOP $LAB [ST IN _ (NOT SHOWN ANGLE NOSING TOP SLAB TOPASLAB FOR CLARITY) INTERt OCKING JOINT (TYP) TO ~ r I'> 1 J l ' Mu-cH PROVIDED B Y AMERICAST , IN STONE PROVIDED BY ANTE iC 11 :lDERGRA .� O R 4oT FILTER MEDIA PROVIDED BY AMER ICAST SECTION A -A CURB AND GUTTER (BY OTHERS) 10 l,,••� �� STREET -J DOWEL BARS 1 R 12" D.C. - F '- P_RF.GRATED ° l UNDERDRA1N SYSTEM BY AMER 1(,AaT LyESIGNArIUN L Nt TREE GRATE p rl SIZE G1TY _ 1 OUTLET E 4 x X. 6 4' 0" 6 .J 1 x3 3 -c 4" SUR � PVC 4 x 8 4'-0" g'-i," (1) 3x3 4-" SDR-35 PVC 12 4'-01. (1) 3x.3 4" SDR-35 PVC 6 x 8 6'-o" a'-G" 4x4 q" SDR-35 PVC 6 x 10 5'-0" 10'-Ct" (i) 4A4 6- 5IDR-35 PVC 6 x 12 6'-0" 12'-0" (2) 4x4 6" SDR-35 PVC 7 x 13 7'-0" 13'--0" (2) 4x4 - 6" SDR-35 PVC: MODIFICATIONS OF DRAWINGS ARE ONUT` PERMITTED BY WRITTEN AUTHORIZATION FROM FILTERRA DRAWING XIATABLE IN TIF FILE FORMAT, - - DATE: 09-04--07 DW(3; I-TNL-3 I 1 RRECAFILTERRA@ LIMIT p NARROW LENGTH CONFIGURATION f � ��tip, °'a' US PAT 6,277,274 AND 6,569,321 '4" S.DR-35 GASKETED COUPLING CAST INri1 PRECAST WALL (LOCATION VARIES) PARKING LOT OR STREET m 4- Al'C OUTLET PIPE (Y OTHERS) r FACE 4F CURB � CONNECT TO APPROPR!ArE / OUTFALL (LOCATION 4ad2tk.S}: 46- THROAT -G'FASS I I r .. _ xQ I .. - I I� N. A 1 a " I C- a L. 1- ti. I � I U001FIED FIEPERRA TOP SLAIa -�� t- _ -- -` -I SIDEWALK CENTER OF -V3 TREE GRATE -" i-- 60" . 6&;(_ SIZE -- _Dlhi. ''°A° TREE GRATE ...4X8 6X8 9•.--0- 3' 3' '6XI O a T'--O" 3'x3' MODIFIED NARROW LENGTH_ FILTERRA UNIT _ T PLEASE NOTE ONLY FOR 4X5 (SHOWN) GXa AND 6XIC BOXES MODIFICATION ON PROJECT INFORMATION FORM MODIFICATIONS OF DRAWINGS ARE ONLY PERMITTED BY WRITTEN AUTHORIZATTgfJ FROM FI TEW?A [DATE: 09-04-07 DWG: FTSC-.2-- - " r r J7 TYPICAL FILTERRA@Me a t SIDEWALK CONFIGURATIONS us Air 6,277,274 I fop itT oo-b tYi:as: TOLL tEtrSlso):3a74ts AND 6,569,'32't 21 = � •, FILTERRAS TO BE STANDARD/NARROW LENGTH CONFIGURATION WITH RECESSED TOP SLAB UNLESS OTHERWISE NOTED. FILTERRA 248.1 SHALL BE A MODIFIED NARROW LENGTH SIDEWALK CONFIGURATION UNIT. SEE TYPICAL DETAILS AND FILTERRA SCHEDULE ON THIS SHEET. Fitterra Schedule Structure Number Size (ID fir) Filterra TC Filterra INV OUT Bypass Str INV IN PVC Ou fall {art,} Recessed Top Modified Narrow Length Sidewalk Configuration 23.4 6 X 4 501,77 498_10 496,33 4 Yes No 25-5 13 X 7 501.48 497.65 496.00 6 Yes No 244-1 6 X 4 507.19 503.52 501.:9.0 4 Yes No 245-1 6X4 507-65 503.98 50Z00 4 yes No 248.1 4 G 8 518.t34 514.54 512-00 4 No Yes Project Drainage Area Designation Townhornes L storm pailutarlt export 1n pounds, L = lP(PI)Rvr12 j [ C(A)2.721 Rv mean runoff coetttctent,. RV = 0.05 i-:O_ COO([) Rj small storm correction factor, 0 9 1 percent imperviousness P annual precipitation, 43" in Albemarle A project area in acres in subject drainage area, C pollutant concentration, mg.I I or ppm target phosphorus f teeter applied to RR V required treatment volume in cy, 0.5" over imperv. area = A(1 KI056LD(0.5;12y27 RR required temoNal , L(post) - fx L(pre) %RR removal efficiency , RRIGOJL(post) Impervious Cover Com.putatiori (valtre3 to feet & square feet) 'Item !Pre -development ;Area ,post -development ,Area Pawned Length Width subtotal Length Width subtotal I ! 5.7730 roads ......... .. .. .. ... It 1 Driveways Len 1�lldth subtotal Length Length no. ai L Y 9 � 1dt � h r1Q subtotal and walks c 1Qes,5 Drverrays y 17,071 Sft4-..Vtelks r Parking Lots Area 1 Area ��r a 3 Area 4 !Area 1 area 2 Area 3 Ar 1 a Gravel areas Area 1 Area 2 SU:Ttotal F .-..... Area 1 0 Area 2 isuntotal x0. 7 01 X G 70 ;Structures Area no 5Ubtotal Area .... no. 03,245: Buildings _ ................. ...: ; .. ;Actively-grtzeclpasture & Area Area ;ya ds and cultivated turf x O'Ga = - -- rR - 0.04 _ ,Active Crop land Area Area X e}:L - x t .25 - • ....._.... Other Impervious Areas Area 1 Area, 2 Area 3 .... Area 1 -- -- Area 2 Area j Impervious Cover 09 l i t I(pre)-�� 1(post) r New Development (For Development Areas; existing impervious cover <--20°u) E #: I (pro)" Rv(pre} L(pre) L(post) ! RR % RR area Type ._ ., ._ 0 7(i 1 O1T ..._ 0y° _._._ .� 0 23 ..._- 7.91 _._- ____ 213 12 15.20 w ... ___.- .. ... . 6 Developrnetlt Area a. , 005 0:86 11 56 . 1L 70 € 93`'1 Chink#ny Water Watersheds j £i 4€ i; fl0 ' 1 °ti' 0 06 1.16 13 2'i i 12flo 91 tt° Other Rural Land " min. values �tIB V2 R to fi p m t � BIcT tTlAnt Areas n FR dBtf 2XISti ( p t fiii erut€}u5 S Fr �- 7 e4)Ver 24° ) C f. I (P['O) * Ry(p e) ' L(pre) L(post) RR is RIB Area Type G7G 0 4 ° 0 23 7..9 € 20 12 €1 : G r�ro �` 0 rnerti Area J YG p 0 35 '. L 0.1?� 0 ki ('� r� tJ.� ' _ 8♦�6C 1H - L.i ,{ �{ ! Y 6 t i , i 1L �,, f! f - F C r nlclrl tJita er L.a .� � I�t t t rs T t�s 0.40 ' 0A5 ; 1 %; . 0 i16 .. 1.16 13 21 12-22 1 3 itri Other -Rural Land rev. 30 .May 2002 JNIK STORMWATER DETENTION FOR THE IMPROVEMENTS PROPOSED WITH THIS SITE PLAN WILL BE PROVIDED BY THE PERMANENT NORTH SWM FACILITY. DETAILS FOR THE FACILITY ARE PROVIDED ON THE ALBEMARLE PLACE STORMWATER MANAGEMENT PLAN AMENDMENT NO.4, WPO# 2010--00023. STORMWATER QUALITY FOR THE IMPROVEMENTS PROPOSED WITH THIS SITE PLAN WILL BE PROVIDED BY THE STORMFILTER AND VORTECHS UNITS TO BE CONSTRUCTED AS PART OF THE ALBEMARLE PLACE STORMWATER MANAGEMENT PLAN AMENDMENT NO.4, WPO# 2010-00023, AND THE FILTERRAS PROPOSED AS PART OF THIS PLAN. THE STORMFILTER AND VORTECHS UNITS PROVIDE A POLLUTANT REMOVAL RATE OF 60%. THE FILTERRAS PROVIDE A POLLUTANT REMOVAL RATE OF 74%. THE REQUIRED POLLUTANT REMOVAL RATE IS 66% FOR BLOCK D2. (PLEASE REFER TO BMP COMPUTATIONS USING THE SIMPLE METHOD WORKSHEET PROVIDED ON THIS DRAWING.) THE FILTERRAS SHOWN FOR BLOCK D2 SHALL BE INSTALLED AS PART OF THIS PLAN AND WILL PROVIDE THE REMAINING WATER QUALITY NECESSARY FOR THAT PORTION OF THE STONEFIELD DEVELOPMENT. POLLUTANT REMOVAL CALCULATIONS FOR BLOCK D2 REFERENCE SIMPLE METHOD WORKSHEETS ON THIS DWG AND THE DRAINAGE AREA MAP ON DWG No. C-18. TOTAL DRAINAGE AREA = 5.60 ACRES TOTAL L(PRE) = 7.91 LBS TOTAL L(POST) = 23.12 LBS TOTAL POLLUTANT REMOVAL REQUIRED = 15,20 LBS DRAINAGE AREA TO FILTERRAS = 1.16 ACRES PERCENTAGE PROJECT AREA TREATED BY FILTERRAS = 20.7% FILTERRA POLLUTANT REMOVAL RATE = 74% STORMFILTER & VORTECHS POLLUTANT REMOVAL RATE = 60% [QLUMNT REMOVED BY FILTERRAS (0.207)(23>12 LBS)(0.74) = 3.54 LBS POLLUTANT LOAD REMAINING = 23.12 - 3.54 = 19.58 LBS POLLUTANT _REMOVEID-_BY_-STORMFILTER & VORTECHS (19.58 LBS)(0.60) = 11.75 LBS TOTAL POLLUTANT LOAD REMOVED 3.54 LBS + 11.75 LBS = 15.29 LBS 15.29 LBS > 15.20 LBS POLLUTANT REMOVAL REQUIREMENTS ARE MET FOR THIS AREA. 1 ADDRESSED COUNTY COMMENTS RU 4/17/15 AT 10 N ONLY ! " ENGLNF:FRS SUVVFYORS PLANNERS AsSOCIADIHR PO Box 41'9 3D40 Axenime Square PI- LI•w_Irbm.g.4A2=t5D2 C:t::� xcs-:1t_.v.\d>y11 Phi 4-14.316.60i30 Phone: 434.%4.2700 x,.w.w4 asso.i .5.ef-t DESIGNED BY: RU PROJECT: TONE�J�J�J L BLOCK 2 FINAL SITE P1 AN ALBEMARLE COUNTY' VIRGINIA 2--- ADDRESSED COUNTY COMMENTS RU 5/12/15 ------FOR 3 ADDRESSED COUNTY COMMENTS RU 6/5/15 -__- _._ DRAWN BY: Ta 4 SIGNATURE Sri RU 6/22/1 TDW STORMWATER MANAGEMENT CALCULATIONS AND DETAILS - BY: WING NUMBER: 214075.02 FILE NAf�fE: 40��Q� �W®4.drv� DISCIPLINE. CIWL SCALE: H: NIA V. NIA DATE: 11114114 NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE SET REV. NO. 4 DRAWING NUMBER: C- SHEET NUMBER: 21 of 33 O 2019 - 30 SCALE, LLC 1.GENERAL 1.1.1 HARD MATERIALS: WEATHERED ROCK, DENSE CONSOLIDATED DEPOSITS, OR CONGLOMERATE MATERIALS WHICH ARE NOT INCLUDED IN THE DEFINITION OF "ROCK" BUT WHICH USUALLY REQUIRE THE USE OF HEAVY EXCAVATION EQUIPMENT, RIPPER TEETH, OR JACK HAMMERS FOR REMOVAL. 1.1.2 ROCK: SOLID HOMOGENEOUS INTERLOCKING CRYSTALLINE MATERIAL WITH FIRMLY CEMENTED, LAMINATED, OR FOLIATED MASSES OR CONGLOMERATE DEPOSITS, NEITHER OF WHICH CAN BE REMOVED WITHOUT SYSTEMATIC DRILLING AND BLASTING, DRILLING AND THE USE OF EXPANSION JACKS OR FEATHER WEDGES, OR THE USE OF BACKHOE-MOUNTED PNEUMATIC HOLE PUNCHERS OR ROCK BREAKERS; ALSO LARGE BOULDERS, BURIED MASONRY, OR CONCRETE OTHER THAN PAVEMENT EXCEEDING % CUBIC YARD IN VOLUME. REMOVAL OF HARD MATERIAL WILL NOT BE CONSIDERED ROCK EXCAVATION BECAUSE OF INTERMITTENT DRILLING AND BLASTING THAT IS PERFORMED MERELY TO INCREASE PRODUCTION, 1.1.3 COHESIVE MATERIALS: MATERIALS ASTM D 2487 CLASSIFIED AS GC, SC, ML. CL, MH, AND CH. MATERIALS CLASSIFIED AS GM AND SM WILL BE IDENTIFIED AS COHESIVE ONLY WHEN THE FINES HAVE A PLASTICITY INDEX GREATER THAN ZERO. 10 1!_. i9WAAIW0111111 1.2 CRITERIA FOR BIDDING 1.2.1 BASE BIDS ON THE ELEVATIONS AS INDICATED. 1.2.2 ROCK EXCAVATION SHALL BE UNCLASSIFIED. ALL EARTHWORK EXCAVATION SHALL BE PERFORMED TO THE INDICATED ELEVATIONS, 1.2.4 REMOVE MATERIAL IN AN APPROVED MANNER, AND PROVIDE EXCAVATION SUPPORT STRUCTURES AS REQUIRED IN ACCORDANCE WITH THE U.S. ARMY CORPS OF ENGINEERS "SAFETY AND HEALTH REQUIREMENTS MANUAL," EM-385-1-1, SECTION 25. 1.2.5 ROCK EXCAVATION, AS DEFINED HEREIN, MAY EXIST ON THIS PROJECT. ROCK EXCAVATION SHALL BE PERFORMED AS UNCLASSIFIED EXCAVATION TO THE INDICATED ELEVATIONS. AVAN 1 filli Ill III ii ..•lyd ■ ■ ■• ■ i ! i 2.1.3 SELECT MATERIAL: ASTM D 2487, CLASSIFICATION GW, GP, SW, SP WITH A MAXIMUM OF 10 PERCENT BY WEIGHT PASSING ASTM D 1140, NO. 200 SIEVE. 2.1.4 PIPE BEDDING MATERIAL: VDOT NO. 57 COARSE AGGREGATE. 2.1.5 AGGREGATE FILL: VDOT NO. 5 OR NO. 57 COARSE AGGREGATE. 3,EXECUTION 3.1 CLEARING 3.1.1 REMOVE FROM THE SITE TREES, STUMPS, ROOTS, BRUSH, SHRUBS, DOWN TIMBER, ROTTEN WOOD, RUBBISH, OTHER VEGETATION, AS WELL AS FENCES AND INCIDENTAL STRUCTURES NECESSARY TO ALLOW FOR NEW CONSTRUCTION. INf y u v ul 3.3.1 GRUB AREAS WITHIN AND TO A POINT 10 FEET OUTSIDE OF ALL STRUCTURES, AREAS TO RECEIVE FILL WHERE FINISHED GRADE WILL BE LESS THAN 3 FEET ABOVE EXISTING GRADE, CUT AREAS WHERE FINISHED GRADE WILL BE LESS THAN 2 FEET BELOW EXISTING GRADE, TRANSITIONAL AREAS BETWEEN CUT AND FILL, AND ANY AREA TO RECEIVE CONTROL FILL, 3.4 CONSTRUCTION/CLEARING LIMITS 3.4.1 THE CONTRACTOR SHALL NOT DISTURB ANY AREAS OUTSIDE THE CONSTRUCTION LIMITS INDICATED ON THE DRAWINGS WITHOUT EXPRESS WRITTEN PERMISSION FROM THE ENGINEER. 3.4.2 NO CLEAR -CUTTING OF TIMBER SHALL BE PERMITTED WITHIN THE CONSTRUCTION LIMITS. THE CONTRACTOR SHALL MAKE SELECT CUTTING OF TREES, TAKING THE SMALLEST TREES FIRST, THAT ARE MANDATORY FOR THE CONSTRUCTION OF THE UTILITY LINE. THE ENGINEER'S DECISION SHALL BE FINAL ON DETERMINATION OF WHICH TREES ARE TO BE CUT. 3.5 CLEAN UP DEBRIS RESULTING FROM SITE CLEARING OPERATIONS CONTINUOUSLY WITH THE PROGRESS OF THE WORK. 3.7.1 STRIPPING: STRIP EXISTING TOPSOIL, WHEN PRESENT, TO A DEPTH OF 6 INCHES WITHOUT CONTAMINATION BY SUBSOIL MATERIAL, STOCKPILE TOPSOIL SEPARATELY FROM OTHER EXCAVATED MATERIAL AND LOCATE CONVENIENT TO FINISH GRADING AREA. 3.7.2 UNSUITABLE MATERIAL: REMOVE UNSUITABLE SOIL MATERIALS, WASTE MATERIAL, VEGETATION, DEBRIS, DECAYED VEGETABLE MATTER, SOD, AND MULCH FROM THE CONSTRUCTION SITE. DISPOSE OF THE UNSUITABLE MATERIAL OFF THE OWNER'S PROPERTY IN ACCORDANCE WITH ALL FEDERAL, STATE, AND LOCAL REGULATIONS. • -INI Imemanijuxti 3.9 EXCAVATION 3.9.1 EXCAVATE TO THE ELEVATIONS AND DIMENSIONS INDICATED AND AS SPECIFIED IN THIS SECTION. REUSE EXCAVATED MATERIALS THAT MEET THE SPECIFIED REQUIREMENTS FOR THE MATERIAL TYPE REQUIRED AT THE INTENDED LOCATION. WHEN SOIL NOT MEETING THE REQUIREMENTS SPECIFIED IN THIS SECTION ARE ENCOUNTERED DURING EXCAVATION, REMOVE THE UNSUITABLE SOIL MATERIAL AND REPLACE WITH SELECT MATERIAL AS SPECIFIED IN THIS SECTION. REMOVAL AND DISPOSAL OF UNSUITABLE SOIL MATERIAL AND PLACEMENT AND COMPACTION OF SELECT MATERIAL SHALL BE PERFORMED AT NO ADDITIONAL COST TO THE OWNER. 3.9.2 KEEP EXCAVATIONS FREE FROM WATER. EXCAVATE SOIL DISTURBED OR WEAKENED BY THE CONTRACTOR'S OPERATIONS, AND SOILS SOFTENED OR MADE UNSUITABLE FOR SUBSEQUENT CONSTRUCTION DUE TO EXPOSURE TO WEATHER. REFILL WITH SELECT MATERIAL AND COMPACT TO 95% OF ASTM D 698 MAXIMUM DENSITY. UNLESS SPECIFIED OTHERWISE, REFILL EXCAVATIONS CUT BELOW INDICATED DEPTH WITH SELECT MATERIAL AND COMPACT TO 95% OF ASTM D 698 MAXIMUM DENSITY, SIDE SLOPES WHEN ALLOWED SHALL BE PROTECTED WITH 6-MIL POLYETHYLENE SHEETING. 3.9.3 PIPE TRENCHES: EXCAVATE TO THE DIMENSIONS INDICATED AND AS SPECIFIED HEREIN. TRENCHES IN PUBLIC ROADWAYS SHALL BE EXCAVATED IN ACCORDANCE WITH THE LATEST EDITION OF THE VDOT ROAD AND BRIDGE SPECIFICATIONS. WHERE ROCK IS ENCOUNTERED, EXCAVATE AND REMOVE ROCK TO A MINIMUM DEPTH OF 6 INCHES BELOW THE PIPE INVERT. GRADE BOTTOM OF TRENCHES TO PROVIDE UNIFORM SUPPORT FOR EACH SECTION OF PIPE AFTER PIPE BEDDING PLACEMENT. 3.10 FILLING AND BACKFILLING: FILL AND BACKFILL TO ELEVATIONS AND DIMENSIONS INDICATED. COMPACT EACH LIFT BEFORE PLACING OVERLAYING LIFT. 3.10.1 COMMON FILL PLACEMENT: PROVIDE FOR GENERAL SITE, IN GREEN OPEN SPACE AREAS. PLACE IN 6-INCH LIFTS. COMPACT AREAS NOT ACCESSIBLE TO ROLLERS OR COMPACTORS WITH MECHANICAL HAND TAMPERS. AERATE MATERIAL EXCESSIVELY MOISTENED BY RAIN TO A SATISFACTORY MOISTURE CONTENT. PROVIDE A SMOOTH FINISH SURFACE BY BLARING, ROLLING WITH A SMOOTH ROLLER, OR BOTH. 3.10.2 BACKFILL AND FILL MATERIAL PLACEMENT: PROVIDE FOR UNDER PAVEMENT, BUILDINGS & OTHER STRUCTURAL COMPONENTS. PLACE IN 6-INCH LIFTS. PLACE BACKFILL MATERIAL ADJACENT TO STRUCTURES AS THE STRUCTURAL ELEMENTS ARE COMPLETED AND ACCEPTED. BACKFILL H APPROVED. PLACE AND COMPACT MATERIAL TO AVOID STRUCTURES. PLACE AGAINST CONCRETE ONLY WHEN APPRO LOADING UPON OR AGAINST STR TURFS. BACKFILL AND FILL MATERIALS TO 5 FEET OUTSIDE OF STRUCTURES. 3.10.4 TRENCH BACKFILLING: BACKFILL AS RAPIDLY AS CONSTRUCTION, TESTING, AND ACCEPTANCE OF WORK PERMITS. PLACE AND COMPACT INITIAL BACKFILL AND BACKFILL MATERIALS IN 6-INCH LIFTS TO THE TOP OF THE TRENCH. TRENCHES IN PUBLIC ROADWAYS SHALL BE BACKFiLLED AND COMPACTED IN ACCORDANCE WITH THE LATEST EDITION OF THE VDOT ROAD AND BRIDGE SPECIFICATIONS. !! i _ ! jai !- .)1� !_� • - _. ■. - �: - • -:, ! -, ,-_ :�: � ! r ! -!- --; • : ! �r - ! 1 • _ -i!- is � -'. , �� !' -: !� is � =:!_ ! �;,. ! � !•s � f`:• 3.11.3 PIPE TRENCHES: COMPACT FILL, BACKFILL, AND SELECT MATERIALS PLACED IN PIPE TRENCHES TO 98% OF ASTM D 698. 3.11.4 ADJACENT AREAS: COMPACT AREAS WITHIN 10 FEET OF STRUCTURES TO 98% OF ASTM D 698. 3.11.5 PAVED AREAS: COMPACT TOP 12 INCHES OF SUBGRADE TO 100% OF ASTM D 698. COMPACT FILL, BACKFILL, AND SELECT MATERIALS TO 100% OF ASTM D 698. IN ADDITION TO THE SPECIFIED COMPACTION REQUIREMENTS, FILL AND BACKFILL MATERIALS SHALL BE COMPACTED TO DEVELOP A CALIFORNIA BEARING RATIO (CBR) OF 10. 3.12 RIPRAP: RIPRAP SHALL BE INSTALLED IN ACCORDANCE WITH THE LATEST EDITION OF THE VDOT ROAD AND BRIDGE SPECIFICATIONS, SECTION 414, "RIPRAP." GEOTEXTILE FABRIC SHALL BE PLACED UNDER ALL RIPRAP. 3.13 DISPOSITION OF SURPLUS MATERIAL: WASTE UNSUITABLE SOIL MATERIALS OFF THE OWNER'S PROPERTY AS DIRECTED BY THE OWNER AND WW ASSOCIATES IN ACCORDANCE WITH FEDERAL, STATE, AND LOCAL REGULATIONS. 3.14 FIELD QUALITY CONTROL: THE CONTRACTOR SHALL EMPLOY AN INDEPENDENT TESTING FIRM TO PROVIDE ALL SOIL TESTING REQUIRED FOR THIS PROJECT. 3.14.1 SAMPLING: TAKE THE NUMBER AND SIZE OF SAMPLES REQUIRED TO PERFORM THE FOLLOWING TESTS, 3.14.2 TESTING: PERFORM ONE OF EACH OF THE REQUIRED TESTS FOR EACH MATERIAL USED, PROVIDE ADDITIONAL TESTS FOR EACH SOURCE CHANGE AND AS REQUESTED BY WW ASSOCIATES. REVISiONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/8/2019 2 COUNTY COMMENTS 8/28/2019 3 SIGNATURE SUBMISSION 10/31/2019 owners: THE CHRISTOPHER COMPANIES 10461 WHITE GRANITE DRIVE OAKTON VA 22124 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com r, a *' E I LOW 99 r a �.9 J L 0 1 .222 t>. 0 M L F. N S Lac. No. 33023 12/1 /2019