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HomeMy WebLinkAboutWPO202200038 Plan - VSMP 2022-09-14SITE DATA OWNER: BREEZY HILL AT KESWICK LLC 1145 TIMBER LANE BOULDER, CO 80304 DEVELOPER: SOUTHERN DEVELOPMENT GROUP INC. 142 SOUTH PANTOPS DRIVE CHARLOTTESVILLE, VA 22911 PLAN PREPARER: ROUDABUSH, GALE, & ASSOCIATES 999 SECOND STREET, SE., STE 201 CHARLOTTESVILLE, VA. 22902 (434)-977-0205 TAX MAP PARCEL NO: 09400-00-00-008A0, 09400-00-00-00500, 09400-00-00-00600,09400-00-00-00800, 09400-00-00-004800 TOTAL PARCEL AREA: 82.33 AC (94-8A, 94-8, 94-5, 94-6, 94-1A, 94-48) CURRENT USE: EXISTING SINGLE FAMILY DETACHED (SFD) HOMES PROPOSED USE: R1 RESIDENTIAL - 80 UNITS RA PARCEL W/ DEVELOPMENT RIGHTS - 3 UNITS PROPOSED IMPERVIOUS AREA PROPOSED MANAGED TURF AREA PRESERVED FOREST/OPEN SPACE MAGISTERIAL DISTRICT: 11.20 ACRES 53.83 ACRES 10.20 ACRES SCOTTSVILLE DISTRICT CRITICAL SLOPES: THERE SHALL BE NO DISTURBANCE, BUILDINGS SITES OR STRUCTURES PROPOSED, PERMITTED OR ALLOWED ON ANY EXISTING SLOPES GREATER THAN 4:1. PRESERVED SLOPES ARE SHADED & PRESERVED AS OPEN SPACE. IIIIIIell- ,IIIIIIIIIII IIIII. IIIII II IIIIII IIIIii II IIIIIII IIIIIIIII- IIIIIII IIIIII IIIIIIIIIII IIIII IJIIUIIIIIIuI'rllllp ,III III I Illllllllu 'IIIIIII IIhIIIIIInImdIIIV, I�IhlluuuuuomoJll II III Ihl IIiolia IIIIIIIIIII uuwuuuuuum�l �h� III IIIIIII •IIIII ...... l' II II II II IIIIII IIII „„'ICI TMP 94-8A SCOTTSVILLE MAGESTERIAL DISTRICT, COUNTY OF ALBEMARLE, VA SHEET INDEX Sheet Sheet Title Number 1 COVER SHEET 2 GENERAL NOTES 3 SOILS & EXISTING CONDITIONS 4 CONSTRUCTION ACCESS & DEMOLITION PLAN 5 EROSION & SEDIMENT CONTROL NARRATIVE 6 EROSION & SEDIMENT CONTROL PLAN - PHASE I 7 EROSION & SEDIMENT CONTROL PLAN - PHASE II 8 EROSION & SEDIMENT CONTROL DETAILS 9 SEEDING & STABILIZATION NOTES 10 PRE -DEVELOPMENT DRAINAGE MAP 11 POST -DEVELOPMENT DRAINAGE MAP 12 STORMWATER OUTFALL COMPLIANCE V" 13 SWM OUTFALL 1 STORMWATER MANAGEMENT: EXISTING WET POND FACILITIES -QUANTITY CONTROL �? ENGINEERED LEVEL SPREADERS - OPEN SPACE SHEET -FLOW WATERSHED: THE SITE LIES IN THE CARROLL CREEK, RIVANNAH WATERSHED QJ 14 SWM OUTFACE 2 H.U.C. #: HUC 6: JR17, HUC 8, 02080204, HUC 12: 020802040404 15 SWM OUTFALL 3 BOUNDARY SOURCE: THIS PLAT HAS BEEN PREPARED WITHOUT THE BENEFIT OF A TITLE REPORT 16 SWM OUTFALL 4 ALL DEED AND PLAT REFERENCES SHOWN ARE RECORDED IN THE OFFICE OF THE ALBEMARLE COUNTY CIRCUIT COURT CLERK UNLESS NOTED 17 DITCH PROFILES OTHERWISE. A PORTION OF THIS PLAT (TMP 09400-00-00-008A0) HAS BEEN PREPARED FROM AN ACTUAL FIELD SURVEY PERFORMED BY ROUDABUSH GALE & ASSOC. ON DECEMBER 10, 2010 USING MONUMENTS FOUND TO 18 DITCH PROFILES < EXIST AT THE TIME OF THIS SURVEY. A PORTION OF THIS PLAT (TMP 09400-00-00-00500, TMP 09400-00-00-00600 AND TMP 09400-00-00-001A0) HAS Z 19 PROFILES BEEN PREPARED FROM AN ACTUAL FIELD SURVEY PERFORMED BY 20 STORMWATER MANAGEMENT DETAILS ROUDABUSH GALE & ASSOC. ON NOVEMBER 2, 2005 USING MONUMENTS FOUND TO EXIST AT THE TIME OF THIS SURVEY. THE BOUNDARY FOR TMP 21 LAND USE MAINTENANCE &INSPECTION 09400-00-00-00800 IS FROM A PLAT PREPARED BY ROUDABUSH GALE & z Q 22 BASIN & STORMWATER DETAILS ASSOCIATES AND RECORDED AT IDS 877 PG 21. THE BOUNDARY FOR TMP 7J 09400-00-00-04800 IS FROM PLAT PREPARED BY ROUDABUSH GALE & = TOTAL SHEETS = 22 ASSOCIATES AND RECORDED AT DB 1390 PG PG 537 AND A PLAT PREPARED BY O.R. RANDOLPH AND RECORDED AT DB 300 PG 523. TOPOGRAPHY: THE BASE TOPOGRAPHIC AND PLANIMETRIC MAP WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE CHARGE OF, JOSEPH MICHAEL KOVACH FROM AN ACTUAL AIRBORNE SURVEY MADE UNDER HIS SUPERVISION; APRIL 2, 2017; THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED ON AND THAT THIS PLAT, MAP, OR DIGITAL GEOSPATIAL DATA INCLUDES METADATA AND MEETS MINIMUM ACCURACY STANDARDS UNLESS OTHERWISE NOTED. BENCHMARK: SURVEY CONTROL POINTS, "AERIAL TARGETS' PROVIDED MAY 01, 2017 BY ROUDABUSH, GALE AND ASSOCIATES, INC. DATUM HORZ: NAVD 83; VERT: NAVD 88 FLOODPLAIN: A PORTION OF THE AREA SHOWN HEREON IS LOCATED WITHIN FLOOD HAZARD ZONE "A" FOR A 100-YEAR FLOOD AS SHOWN ON FEMA MAP NO. 5100060325D AND 51003C0475D, EFFECTIVE DATE 2/4/2005. THE REMAINING PORTION LIES WITHIN ZONE "X" DETERMINED TO BE OUTSIDE OF THE 0.2% ANNUAL CHANCE FLOODPLAIN. THIS DETERMINATION HAS BEEN MADE BY GRAPHIC METHODS, NO ELEVATION STUDY HAS BEEN PERFORMED AS A PORTION OF THIS PROJECT. STREAM BUFFER: THERE ARE STREAM BUFFERS LOCATED ON THE PROJECT SITE. NO PERMANENT IMPACTS ARE PLANNED OR ANTICIPATED HISTORICAL SIGNIFICANCE: COORDINATION WITH FOR PRESERVATION OR RELOCATION OF EXISTING STRUCTURES AND/OR ARTIFACTS SHALL BE DIRECTED BY THE OWNER. CEMETERIES: THE SUBJECT PROPERTY IS NOT LOCATED WITHIN AN AGRICULTURAL- FOREST DISTRICT. THIS SITE IS NOT LOCATED WITHIN THE WATERSHED OF A COUNTY, PUBLIC WATER SUPPLY RESERVOIR. VICINITY MAP SCALE: 1 "=1000 FEET APPROVALS DEPARTMENT SIGNATURE DATE EPARTMENT OF COMMUNITY DEVELOPMENT INSPECTIONS ENGINEERING U O GO z O L(o Q m N I w N rn N N 0 V) ¢ O _, ON U U ¢ w n w J z_ VI � O O Z C3' 51 A '00 V m pmv , O > Z LL Lu O z wz Soo Lu Z w J 2 U> mQo o w rn U ULu ��o���PyTH Op Df �� Christopher C. Mulligan Lic. No. � 09/07/22 ww� OFESSIONAL S'G z �O V J 0 z W Q ~ � w V J U) J U) Ir J O 0 � U N W mW W z O d U m w 0 m z O w m m 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION• ZQD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 1 OF 22 ALBEMARLE COUNTY ESC NOTES 1. SILT FENCE, SEDIMENT TRAPS AND OTHER PROTECTIVE MEASURES SHALL BE PROVIDED IN AREAS WHERE SEDIMENT FROM DISTURBED AREAS MAY LEAVE THE SITE AND MUST BE PROPERLY INSTALLED BEFORE LAND DISTURBANCE. THESE MEASURES MUST REMAIN INSTALLED AND MAINTAINED UNTIL ADEQUATE STABILIZATION IS ACHIEVED AS DETERMINED BY THE PROGRAM AUTHORITY. 2. ALL EROSION MEASURES ARE SUBJECT TO INSPECTION PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES AND CLEANUP OF SEDIMENTATION MUST BE MADE IMMEDIATELY IF EROSION CONTROL MEASURES ARE FOUND TO BE INADEQUATE, OR IN NEED OF REPAIR, BY A COUNTY INSPECTOR, YOU WILL BE NOTIFIED. A FEE OF $150 WILL BE CHARGED FOR EACH REINSPECTION THAT IS NECESSARY. 3. A TEMPORARY STONE CONSTRUCTION ENTRANCE SHALL BE PROVIDED WHEREVER TRAFFIC WILL BE LEAVING A CONSTRUCTION SITE AND WHERE THERE EXISTS THE POSSIBILITY OF TRANSPORTING MUD DIRECTLY ONTO A ROAD OR OTHER PAVED AREA. 4. ALL DENUDED AREAS ON THE SITE SHALL BE STABILIZED WITHIN SEVEN (7) DAYS OF FINAL GRADING WITH PERMANENT VEGETATION OR A PROTECTIVE GROUND COVER SUITABLE FOR THE TIME OF YEAR. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN THIRTY (30) DAYS. 5. A PERMANENT STABILIZATIONNEGETATIVE COVER SHALL BE ESTABLISHED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS OF THE START OF CLEARING OR GRADING. UNLESS DOCUMENTED IN WRITING TO THE PROGRAM AUTHORITY AT THE START OF LAND DISTURBANCE, THE NINE (9) MONTHS SHALL BE MEASURED FROM THE PERMIT ISSUANCE DATE. IF AN EXTENSION IS NECESSARY AND CONSTRUCTION EXTENDS FOR MORE THAN A YEAR, A PERMIT RENEWAL FEE OF $150 WILL BE REQUIRED. 6. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED, COVERED, OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. 7. ALL STORM SEWER INLETS THAT ARE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE STORM WATER CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. 8. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL NOT BE REMOVED UNTIL DISTURBED AREAS ARE STABILIZED. AFTER STABILIZATION IS COMPLETE, ALL MEASURES SHALL BE REMOVED WITHIN 30 DAYS, UNLESS OTHERWISE AUTHORIZED BY THE PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. ALBEMARLE COUNTY FINAL PLAN GENERAL NOTES GENERAL CONSTRUCTION NOTES 1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT-OF-WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. 3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. 4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. 5. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL:VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. 8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS Ill. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). GENERAL CONSTRUCTION NOTES FOR STREETS (THIS LIST IS IN ADDITION TO THE GENERAL CONSTRUCTION NOTES) 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 (296- 5832) 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. GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 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 OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7: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 O 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/ LOOSF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL 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. GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING CONSTRUCTION OF DAMS. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. GENERAL NOTES 1. EXISTING UTILITIES THE LOCATION OF EXISTING SEWER, WATER, POWER, GAS, TELEPHONE, AND OTHER UTILITIES AND STRUCTURES WHICH ARE LOCATED ACROSS, UNDERNEATH, ALONG AND WITHIN THE LIMITS OF THE PROPOSED WORK ARE NOT NECESSARILY SHOWN ON THE PLANS, AND WHERE SHOWN ARE ONLY APPROXIMATELY CORRECT. PRIOR TO CONSTRUCTION, THE CONTRACTOR SHALL NOTIFY THE UNDERGROUND PROTECTION CENTER ("MISS UTIUTY") AT 1-800-552-7001 AND, AT HIS OWN COST, VERIFY THE LOCATIONS AND ELEVATIONS OF ALL EXISTING UTILITIES WITHIN THE LIMITS OF CONSTRUCTION. HE SHALL NOTIFY THE ENGINEER IMMEDIATELY IF THERE APPEARS TO BE A CONSTRUCTION CONFLICT OR UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLAN. THE CONTRACTOR SHALL BE LIABLE FOR ALL DAMAGE DONE TO ANY STRUCTURES OR PROPERTY THROUGH HIS CARELESSNESS OR NEGLIGENCE. ANY GRADE STAKES, HUBS, ETC. DESTROYED WILL BE REPLACED AT THE CONTRACTORS EXPENSE. THE CONTRACTOR SHALL NOTIFY THE APPLICABLE GOVERNMENTAL PUBUC WORKS, PUBLIC UTILITY DEPARTMENT/ VDOT AT LEAST 24 HOURS PRIOR TO START OF WORK ON THE PROJECT. 2. MATERIALS AND WORKMANSHIP ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE LATEST EDITIONS OF: A. THE 2016 VDOT ROAD AND BRIDGE SPECIFICATIONS. B. THE 2016 VDOT ROAD AND BRIDGE STANDARDS. C. THE CURRENT 2015 REVISION TO THE 2005 WORK AREA PROTECTION MANUAL D. APPLICABLE COUNTY OF ALBEMARLE ORDINANCES AND REGULATIONS E. THE LATEST RULES AND REGULATIONS GOVERNING CONSTRUCTION DEMOLITION AND EXCAVATION AS ADOPTED BY THE SAFETY CODES COMMISSION OF THE COMMONWEALTH OF VIRGINIAAND OSHA. 3. DEVIATION FROM PLANS NO DEVIATION FROM THESE PLANS WILL BE ALLOWED WITHOUT PRIOR WRITTEN APPROVAL OF THE OWNER, ENGINEER AND AFFECTED GOVERNMENTAL AGENCIES. 4. CLEARING AND GRUBBING A. ALL GROWTH OF TREES, OTHER VEGETATION AND OBJECTIONABLE DEBRIS SHALL BE CLEARED AND GRUBBED FROM THE PROPOSED PAVED AND BUILDING AREAS AS WELL AS AREAS INDICATED TO BE GRADED ON THE PLANS. B. ALL CLEARING AND GRUBBING WITHIN THE UTILITY EASEMENTS AND SPECIAL FILL AREAS SHALL BE TO THE LENGTH AND WIDTH NECESSARY TO CONSTRUCT THE IMPROVEMENTS SHOWN ON THE PLANS. C. ALL TREES, BRANCHES, VEGETATION AND DEBRIS SHALL BE DISPOSED OF IN A LEGAL MANNER ACCEPTABLE TO THE OWNER AND ENGINEER. BURNING PERMITS WILL BE OBTAINED BY THE CONTRACTOR AT HIS EXPENSE. D. ALL TREES AND VEGETATION WHICH OBSTRUCT SIGHT DISTANCES AT ROAD INTERSECTIONS SHALL BE REMOVED SO AS TO OBTAIN THE MAXIMUM SIGHT DISTANCE AT EACH INTERSECTION 5. TOPSOIL STRIPPING CONTRACTOR SHALL REMOVE TOPSOIL TO ITS ENTIRE DEPTH FROM ALL AREAS TO BE GRADED AND OR FILLED. HE SHALL STOCKPILE OR REMOVE/REPLACE/AMEND THE TOPSOIL AT OWNERS DIRECTION. 6. GRADING A. ROADWAYS, EASEMENTS, AND SPECIAL FILL AREAS TO BE GRADED AND COMPACTED TO THE FINISHED SUBGRADE OR GRADES AS SHOWN ON THE PLANS. OWNER SHALL HAVE REPRESENTATIVE SUBGRADE CBR TEST RUN AND SHALL REPORT TO THE OWNER, ENGINEER, AND ANY AFFECTED GOVERNMENTAL AGENCIES ANY CONTINUALLY SATURATED OR POOR SOILS; IF TESTED, RESULTS WHICH SHOW A CBR OF LESS THAN 10 SHALL BE ADDRESSED AND RESOLVED TO MEET THE MINIMUM REQUIREMENTS. IN SUCH CASE ROAD PAVEMENT DESIGN MAY HAVE TO BE RE -DESIGNED TO MEET WITH THE ACTUAL SOIL CONDITIONS ENCOUNTERED. B. IF UNSUITABLE MATERIAL IS ENCOUNTERED WITHIN THE ROADWAY, PARKING AREA OR ANY SPECIAL FILL AREA, IT SHALL BE REMOVED FROM THE ENTIRE PROPOSED PAVED AREA OR FILL AREA AND REPLACED WITH SELECT BACKFILL WHICH IS SUITABLE FOR ROADWAY (OR BUILDING SITE) CONSTRUCTION AS PER VDOT REQUIREMENTS AND ANY SPECIAL REQUIREMENTS OF THE COUNTY OWNER, ENGINEER, AND ANY AFFECTED GOVERNMENTAL AGENCIES. C. FILL AND BACKFILL MATERIAL SHALL BE COMPACTED TO 95 % STD. PROCTOR DENSITY AT OPTIMUM MOISTURE t2 % UNLESS SPECIFIED OTHERWISE ON THE PLAN. D. ALL GRADING OPERATIONS SHALL BE DONE IN SUCH A MANNER SO AS TO PROVIDE POSITIVE DRAINAGE AT ALL TIMES. E. AT ALL ROAD INTERSECTIONS IN A CUT SECTION, THE BACK SLOPES AND VEGETATION SHALL BE CUT BACK SO AS TO PROVIDE THE BEST POSSIBLE SIGHT DISTANCE. F. STANDARD SPRING BOXES (SB-1) AND ROADWAY UNDERDRAIN SYSTEM (UNDER -DRAINS & CROSS -DRAINS) WILL BE INSTALLED AT LOCATIONS SHOWN ON THE ROAD PLANS OR WHEREVER FIELD CONDITIONS WARRANT. G. ALL PIPE CULVERTS AND STORM SEWER SYSTEMS WITHIN THE VDOT RIGHT OF WAY SHALL UTILIZE THE PIPE DIAMETER AND BE CONSTRUCTED OF THE SPECIFIED MATERIAL, HAVING A MINIMUM COVER AS SPECIFIED ON THE PLANS. H. BACKFILL FOR ALL UTILITIES WITHIN PROPOSED STREETS SHALL BE PLACED GENERALLY IN ACCORDANCE WITH COUNTY OF ALBEMARLE SEWER AND WATER SPECIFICATIONS(ACSA) AND SPECIFICALLY IN ACCORDANCE WITH VDOT SPECIFICATIONS FOR BACKFILLING AROUND UTILITIES AND THE FOLLOWING CRITERIA AS COORDINATED WITH THE GEOTECHNICAL REPORT I. TRENCHES SHALL BE EXCAVATED TO A MINIMUM OF 4 INCHES BELOW THE BOTTOM OF THE BARREL OF THE PIPE AND A BEDDING SHALL BE PROVIDED AND INSTALLED OF SELECT MATERIAL SUITABLE TO MEET VDOT PB-1 PIPE INSTALLATION REQUIREMENTS. TRENCHES SHALL NOT BE CUT OVER 16 INCHES WIDER THAN THE OUTSIDE DIAMETER OF THE PIPE UNLESS AN UNSUITABLE FOUNDATION MATERIAL IS ENCOUNTERED 7. BASE AND PAVEMENT ITEMS A. SUBGRADE MUST BE CHECKED BY AFFECTED GOVERNMENTAL OFFICIALS, AND OWNER FOR GRADE, TEMPLATE AND COMPACTION BEFORE BASE IS APPLIED. B. BASE AND PAVEMENT MATERIALS SHALL MEET ALL 'VDOT' SPECIFICATIONS AND SHALL BE APPLIED IN ACCORDANCE WITH THE CURRENT 'VDOT SPECIFICATIONS. ALL MATERIALS MUST BE TESTED AND APPROVED BY'VDOT' OR APPLICABLE GOVERNMENTAL AGENCY OFFICIALS PRIOR TO EMPLACEMENT. C. PAVING OPERATIONS SHALL NOT BE STARTED BETWEEN NOVEMBER 15 AND APRIL 1 WITHOUT WRITTEN AUTHORIZATION OF ALBEMARLE COUNTY OR VDOT OFFICIALS AND THE OWNER. D. WHEN USING PUG MILLED AGGREGATE BASE MATERIAL WHICH IS TESTED BY `VDOT` OFFICIALS AT THE PLANT, THE TEST WILL BE GOOD FOR 90 DAYS ONLY. ADDITIONAL "IN PLACE" TEST SHALL BE MADE AFTER 90 DAYS. 8. SEEDING AND MULCHING. ETC. (TO COORDINATE WITH LANDSCAPE SPECS A. ALL FERTILIZING, SEEDING, LIMING, AND MULCHING WILL BE DONE AT THE EROSION & SEDIMENT CONTROL HANDBOOK SPECIFIED APPALACHIAN RATES UNLESS SPECIFIED OTHERWISE IN PLANS: SEE TEMPORARY, PERMANENT AND FERTILIZATIONS SPECIFICATION CHARTS 9. PERMITS A. ALL PERMITS, NECESSARY TO WORK IN PUBLIC ROADS, (ENTRANCE OR OTHERWISE) MUST BE OBTAINED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. ALL OTHER PERMITS NECESSARY TO UNDERTAKE THIS PROJECT MUST BE OBTAINED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. REFER TO COVER SHEET OF THESE CONSTRUCTION PLANS 10. DRAINAGE STRUCTURES A. ALL CURB AND GUTTER AND STORM SEWER TO BE LOCATED IN ANY GOVERNMENTAL RIGHT-OF-WAY SHALL BE COORDINATED WITH V.D.O.T. AND THE COUNTY ENGINEER PRIOR TO INSTALLATION. B. A LONGITUDINAL DROP INLET (ON GRADE) SHALL BE POURED WITH THE THROAT ON THE SAME GRADE AS THE ADJOINING CURB AND GUTTER UNLESS SPECIFICALLY NOTED OTHERWISE ON THE PLANS. C. ALL STORM SEWER SHALL BE HPDE PIPE -ASTM 949 OR ASTM, C-76, CLASS III, RCP, EXCEPT WHERE NOTED D. ALL DRAINAGE STRUCTURES SHALL BE EITHER PRECAST OR CAST -IN -PLACE CONCRETE. 11. CONSTRUCTION STAKING ALL CONSTRUCTION STAKING WILL BE AT THE CONTRACTOR'S EXPENSE UTILIZING A VIRGINIA CERTIFIED PROFESSIONAL ENGINEER OR LAND SURVEYOR UNLESS AGREED UPON BY THE OWNER IN WRITING. COPIES OF ALL SITEWORK CUT SHEETS ARE TO BE FURNISHED TO ENGINEER FOR HIS REVIEW PRIOR TO CONSTRUCTION. CONTRACTOR SHALL BE LIABLE FOR ANY ADVERSE CONSEQUENCES IF CUT SHEETS ARE NOT PROVIDED TO ENGINEER FOR HIS REVIEW PRIOR TO CONSTRUCTION. COST OF THIS REVIEW TO BE BORNE BY CONTRACTOR. COUNTY OF ALBEMARLE Department of Community Development h Construction Record Drawings (As -built) for VSMP The following is a list of information required on construction record drawings for stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constructed location of all items associated with each facility, and the inspection records to verify dimensions materials and installation. The items include but are not limited to the following: proper : g 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. g Pd, 5. Current physical and topographic surve for all earthen structures. Ponds should include a survey P YY Y of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed t of drainage structures culvert/pipe size weirs materials inlets or end treatment s type,, , , O, inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofilter media must be an approved state mix. 13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. LEGEND EXISTING INTERMEDIATE CONTOUR 332c EXISTING WATERLINE W EXISTING INDEX CONTOUR -300- PROPOSED WATERLINE W PROPOSED CONTOUR 20 EXISTING FIRE HYDRANT EXISTING EDGE OF PAVEMENT EX. EP PROPOSED FIRE HYDRANT t PROPOSED EDGE OF PAVEMENT EXISTING WATER VALVE EXISTING CURB AND GUTTER EX. C&G PROPOSED WATER VALVE PROPOSED CURB AND GUTTER CG-6 PROPOSED WATER METER O TRANSITION FROM CG-6 ROLL-TOP EXISTING REDUCER 1 EXISTING STORM SEWER EX. 15" RCP PROPOSED REDUCER 1 PROPOSED STORM SEWER HANDICAP RAMP (CG-12) (DENOTE$ LC(:ATION OF STD. V WT M12 MMR JURISDICTIONAL STANDARD RAMP CONSTRUCTION) EXISTING SANITARY SEWER PARKING INDICATOR t2 PROPOSED SANITARY SEWER (INDICATES THE NUMBER OF TYPICAL PARKING$PACES) PROPERTY LINE BENCHMARK EASEMENT LINE - - - - - - PROPERTY BOUNDARY CENTERLINE LIMITS OF CLEARING AND/OR GRADING VEHICLES PER DAY COUNT 1,234 VPD EXISTING SPOT ELEVATION + 400.50 PROPOSED STREET NAME SIGN PROPOSED SPOT ELEVATION +400.50 EXISTING TREE DRIP LINE • rY"WWY YYYI . EXISTING SIGN -o- PROPOSED SIGN -� EXISTING TREE SANITARY MANHOLE IDENTIFIER zs PROPOSED TREE STORM DRAIN STRUCTURE IDENTIFIER 10 U O GO z to O Q m N y rr w N m Old � U w, Na 0U Om >o0 U Li n L (Dwn J z� m>�� V m C) m v, O ZLULu O Z L or L LU LUZ w90 OInQo o- w 0) m Q W Otr $yTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSIONAL S'G z O UD C) z � W Q LLB O � r_J "' ' J U) J 06 LLJ z O LU N W mW I__L z d U U w 0 m z O w m m w 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 2 OF 22 FED. DAM BREAK —INUNDATION ZONE TEMP. ICONSTRUCTION ESM'T. DB 4957 PG 588 � \ IA A)y BAN SEW ESMT. / O 4357 PG 64 / 1`0 008 V A AV T \ r �0o7Y \ 20' ACSA--a �' \ \ ACCESS ESM'I. • /� 009 i 0 06, / 20 Ptn7 L DB00 49 / �/ i y5ao - ✓^ '.ti \ FED. DAM L J 1 ---�� ��/ / � / .? �/•!� ./_ �/%� �/ ��—v �y � i�.a• �.// ,'v 16 /ems v � 005 �•.-�� 004 yINUNDATION V • l \ d / — APPROX. 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AREAS 35 4- w « \ Oil 1 0 � �. �-w�. � A// "eo I � •!• � � 001 �, '4� � ��ir / \_ \I• \012 • I)"•-.- 6 i 013 \ \\ \ 1 :$ \\ Y•�( \I !• 7r�'r F x- I // �/ �\ \ � \\ �\ \ � \ \ \so\ �• 1 •• /!.••• -• `•....° •,\ • � � • �y \o f'"+\ �\ \I ��. 15�. y�y\ � I, ,,, ,,,,,,, ,,,,,,, ,,r \�_/ / // 2 � / \ � \\ \ ^� \ \�_--� !••\ •If p7 I nO•, �1�, `j�IY 1 \ 4\ >/�\\1 moo, r\ 1 I �9 g �.�T I `•••'•',••.'•''•'1 \_, `� , y y I y l�1/1 • V (I"`�`, 10" a�8 I l;::j::: :::::::::::::::' JbI / I / \ �')'`'7'•.� • 4�'✓/J G �- cal 3 1,.; :; :;: •::; :; ::'::; :.; :._ -EX. 25' INGRESS & is II ( I •/ - _: _ _ I I o� \ II `;�� - - — 1 EGRESS \ \ \ D3 542PG 269 \ ^ /\J \.J f_^"�V^�� !• q I Y Y Ek. 30" RIGHT-0OF-WFY\ / ��- 1 � .�390 � k ,•, •;, •,••;: ;••,i \ I / / —� \ _ \ 1 L \ \ \ I Y.1...,.✓ 1•..� • • Y • '/ +� , 1 I OB 8n Pc 20 I A I \ 1 . ` - _�/ / I \ / \ \ 015 \ col �' ._ // /y • • /off •,s a'a,Y \ i --�_ I is ,;1 00 18 �y �% _% x ;,\ \ \ ; I , oYYa 017 . . • I �\. II 1 \ I Ik h / `t,'1 r 016 ••w....• 51 1:— / %I I/ a• i ° I RUNNING DEER DRIVE _. — — r \ � ` • - aE / !• \1 •= 11 I � go '�� �'. - __' � i - • �\ /' � \ \ • PB` '. � • 1 • I ^�1 J 1 uN y. i ALBEMARLE COUNTY STEEP SLOPES OVERLAY -MANAGED ALBEMARLE COUNTY STEEP SLOPES OVERLAY -PRESERVED ALBEMARLE COUNTY STEEP SLOPES OVERLAY -CRITICAL WETLAND AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) PERIMETER STREAM AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) INTERMITTENT STREAM AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) 100 YEAR FTY GIS) AIN (PER COUNTY GIS) SOILLINE •••""••ADJACENT PROPERTY OWNER INFORMATION IMP 80-56A 001 DEVALL, ROGER R. & DOROTHY V. DEVALL TRUSTEES OF DEVALL LIVING TRUST OB 32641PG 327 IMP 80-56A1 002 GOODE, TOBY L. OR JOAN P. DB 33561PG 003 IMP 80-56B MEANS, G. NEIL & SUSAN L. ROARK TRUSTEES OF SUSAN L. 003 ROARK TRUST DB 33561PG 003 IMP 80-56 004 GIULIANO, GORDON R. OR JULIANNE M. ✓ACKSON DB 36931PG 396 IMP 80-56B 005 MEANS, G. NEIL & SUSAN L. ROARK TRUSTEES OF SUSAN L. ROARK TRUST DB 33561PG 003 TMP 94-4 MEANS, G. NEIL & SUSAN L. ROARK TRUSTEES OF SUSAN L. 006 ROARK TRUST DB 33561PG 003 IMP 94-3 MEANS, G NEIL & SUSAN L ROARK TRUSTEES OF SUSAN L 007 ROARK TRUST DB 33561PG 003 TMP 93A4-S5-H5 008 STANLEY MARTIN HOMES LLC DB 54951PG 635 IMP 93A4-H2 009 GLENMORE COMMUNITY ASSOCIATION INC DB 39071PG 401 IMP 93A4-✓ 010 GLENMORE COMMUNITY ASSOCIATION INC DB 4803/PG 80 IMP 94-7B 011 HAWKINS, LARRY R. DB 900/PG 114 IMP 94-7A 012 HAWKINS, CLARENCE M. & BEATRICE DB 689/PG 515 IMP 94-7 013 MILLS, AUDREY HEARNS ETAL CIO KAREN ANDERSON DB 13651PG 285 T UP 94-8F 014 WASHINGTON, ALICE BOYD & CHARLENE FLORENCE GRIFFIN DB 5182/PG 256 IMP 94-8E 8EWERS, PATRICIA A DB 1437/PG 498 IMP 94-8C 016 HAWKINS, CLARENCE M. OR BEATRICE B. DB 658/PG 403 IMP 94-48A 017 BREEZY HILL AT KESWICK LLC DB 5491PG 364 IMP 94 48 pig BREEZY HILL AT KESWICK LLC DB 54931PG 364 SOILS INFORMATION J CD / _j I 1 1 y \ I 1 I \ 1 \ \ I \ 1 I I I 1 y \ I \ 1 \ 1 \ \ 200 0 SCALE: 1"=200 1 I ; 1 B - MEADOWVILLE SILT LOAM, 2 TO 7 PERCENT SLOPES, 30-60 INCHES TO RESTRICTIVE t FEATURES, MODERATELY WELL DRAINED, HYDROLOGIC GROUP: C 16 - CORDORUS SILT LOAM, 0 TO 2 PERCENT SLOPES, MORE THAN 80 INCHES TO RESTRICTIVE �., FEATURES, SOMEWHAT POORLY DRAINED, HYDROLOGIC GROUP: B/D 46B - GRASSLAND SILT LOAM, 2 TO 7 PERCENT SLOPES, 40-60 INCHES TO RESTRICTIVE FEATURES, MODERATELY WELL DRAINED, HYDROLOGIC GROUP: D 51 B - BUGLEY CHANNERY SILT LOAM, 2 TO 7 PERCENT SLOPES, 15-20 INCHES TO RESTRICTIVE FEATURES, SOMEWHAT EXCESSIVELY DRAINED, HYDROLOGIC GROUP: D 51 C - BUGLEY CHANNERY SILT LOAM, 7 TO 15 PERCENT SLOPES, 10-20 INCHES TO RESTRICTIVE FEATURES, SOMEWHAT EXCESSIVELY DRAINED, HYDROLOGIC GROUP: D 51 D - BUGLEY CHANNERY SILT LOAM, 15 TO 25 PERCENT SLOPES, 10-20 INCHES TO RESTRICTIVE FEATURES, SOMEWHAT EXCESSIVELY DRAINED, HYDROLOGIC GROUP: D 52D - BUGLEY VERY CHANNERY SILT LOAM, 15 TO 25 PERCENT SLOPES, 10.20 INCHES TO RESTRICTIVE FEATURES, SOMEWHAT EXCESSIVELY DRAINED, HYDROLOGIC GROUP: D 62B - BUFFSTAT SILT LOAM, 2 TO 7 PERCENT SLOPES, 40-60 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B 62C - BUFFSTAT SILT LOAM, 7 TO 15 PERCENT SLOPES, 40-60 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B 80B - LITTLEJOE SILT LOAM, 2 TO 7 PERCENT SLOPES, 40-60 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B 96B - DELILA LOAM, 2 TO 7 PERCENT SLOPES, MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, POORLY DRAINED, HYDROLOGIC GROUP: D 200 400 600 0 Z O � Q m N 1011- LOUOaL N m Lu N Coll OU >oq U n L ` a cnuiwn N r� ZC3 �� O)-00 V pUv , Otr > Z W W p z L or L z Lu Luz W9= O> rnQd lW rnco Q W yTH Op Df �� Christopher C. 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I I 1 `\ \ \\ \\\ 1 1 1 I I ` \t 1 ••� /�•'1, \\\= % / / / \\ _\`` -` ____.�J I / �,\\\ \ �fl \ \\/ _`/ \ -/ ` _ ___/ ��d / \ ____ / o I \\= \ 1\\\ Y U. \ ` `L/ DRIVE 1 Z _ pEE �9a "C--I\�' II- - _ T,� �i,\ \ \ 'J[(y`�....�^+,�/ - `__ � // / / / \ iC \` ` 1 \ \ \ \ \ _/ __ ., •� / '- i 1 I \ ` \ fe$. x c`` mac• + E �",� / � ' ,_ - \ 4\ / / 1 - it I 1 I 1 1 1 \ \ 1 I 1 � 1 � 1 1 1 1 I lit=-- _ \ I \ \ I \ \ I I \ \ I �J \ I \ I\ CONNECTION � 1 II IIII 1 IIII 1 E � 1I I I I I I I I I I j 1 III 1 \ \ ` � 1 V ; \ ALBEMARLE COUNTY STEEP SLOPES OVERLAY -MANAGED ALBEMARLE COUNTY STEEP SLOPES OVERLAY -PRESERVED ALBEMARLE COUNTY STEEP SLOPES OVERLAY -CRITICAL WETLAND AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) PERIMETER STREAM AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) INTERMITTENT STREAM AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) 100 YEAR FLOODPLAIN (PER COUNTY GIS) 1 KEYNOTE LEGEND 1O TO BE REMOVED - EXISTING ROAD - NOT TO BE USED FOR CONSTRUCTION 2O TO BE REMOVED - EXISTING BUILDING & ASSOCIATED APPURTENANCES 3O TO BE REMOVED - EXISTING STRUCTURE 4O TO BE REMOVED - EXISTING OVERHEAD UTILITY & LINES 5O TO BE REMOVED - EXISTING WELL (PER VDH STANDARD) O6 TO BE REMOVED - EXISTING WALL O7 TO BE REMOVED - EXISTING FUEL TANK 8O TO BE REMOVED - EXISTING FENCE NOTE: EXISTING ITEMS 1, 2,4 & 8 CANNOT BE REMOVED UNTIL PHASE II ESC. 11 1 200 400 600 FBI 0 GO z O(Do Q !? N w N m of 0 � V) ¢ N O o O -> q U ¢ w In w InO T� Z� co -0 V t prnv , p 5; Zw Lu O or z w 0 Lu LLZ W J2 p� UQd d w 0) co ¢ W Otr o�OP NS , D f�� Christopher C. Mulligan Lic. No. 09/07/22 ww� OFESSI z O_/'� V J 0 O 0 z � 0 C6 J U) W J 06 v _ 0 z 0 U N LLJ Cc LLJ Mr z W 0 77 Z !L U U w 0 Z O W In O DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. CONTRACTOR SHALL ESTABLISH A STABILIZED SITE, AND NOT ALLOW ANY EROSION OR SEDIMENT TO EXIT. 2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. LOCATE SOIL STOCKPILES WITH PERIMETER SILT FENCE AND UPSTREAM OF TRAPS & BASINS, AS SHOWN. 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. CONTRACTOR SHALL ESTABLISH A VEGETATIVE COVER ON ALL DENUDED AREAS 4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. THE SEDIMENT TRAPS & BASINS SHALL BE CONSTRUCTED AS THE FIRST STEP IN CONSTRUCTION. MINIMIZE CLEARING & GRUBBING. 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES WEEKLY & AFTER EACH RAINFALL EVENT. 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. THE TEMPORARY SEDIMENT BASIN SHALL BE SIZED FOR RUNOFF FROM THE ENTIRE CONTRIBUTING WATERSHED. UTILIZE CLEAN -WATER DIVERSIONS FOR LARGE OFFSITE WATERSHED; INSTALLATION STAGING AND DIVERSION DEPICTED ON EC1 & EC2. 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. THERE ARE NUMEROUS SEDIMENT TRAPS PROPOSED; REFER TO THE SIZING TABLES & EROSION CONTROL PLANS FOR CONSTRUCTION. 7. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. THE SEDIMENT BASIN SHALL BE LOCATED AND SIZED TO RECEIVE THE LARGEST RUNOFF AREA. THE RISER AND BARREL IS TO BE CONSTRUCTED AS SHOWN ON THE INDIVIDUAL BASIN DETAILS. 8. 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. THIS APPLIES TO THE PROPOSED FILL SLOPES ALONG THE PROPOSED ROADWAYS AND THE CUT/FILL SLOPES LOCATED AT THE PERIPHERY OF THE SITE. 9. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. SITE RUN-OFF WILL BE MANAGED IN A SHEET -FLOW PATTERN, DISCOURAGING CONCENTRATION OF RUNOFF ACROSS THE FILL OR STEEP SLOPE AREAS. DIVERSION DITCHES SHALL BE LOCATED TO DIRECT RUNOFF TO THE SEDIMENT TRAPPING DEVICES. ADJUST DIVERSIONS ALONG PERIMETER AS SITE GRADES APPROACH FINAL GRADES. 10. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. THERE ARE NO KNOWN CRITICAL AREAS KNOWN ONSITE, CONSULT GEOTECH IF AREAS OF SEEPAGE OR SOLID ROCK ARE ENCOUNTERED. 11. ALL STORM SEWER INLETS THAT ARE MADE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. EXISTING AND PROPOSED INLETS SHALL BE PROTECTED WITH INLET PROTECTION AS CONSTRUCTED. 12. BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. APPLICABLE TO PERMANENT OUTFALL PIPES AND OVERFLOW CHANNEL EXITING FROM TRAPS OR BASINS. 13. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NON -ERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NON -ERODIBLE COVER MATERIALS. THERE ARE NO LIVE WATER COURSES WITHIN THE DISTURBED AREA ON THESE PLANS. 14. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NON -ERODIBLE MATERIAL SHALL BE PROVIDED. THERE ARE NO LIVE WATER COURSES TO BE CROSSED BY CONSTRUCTION VEHICLES. 15. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. THERE ARE NO LIVE WATER COURSES TO BE CROSSED.. 16. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. OFFSITE RUNOFF SHALL BE CONVEYED THROUGH THE PROPOSED ROADWAY WITH A CULVERT, PRIOR TO FILL. SEE EROSION CONTROL PHASE 1 PLAN. 17. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D. MATERIAL USED FOR BACK FILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. ADHERE TO THESE APPLICABLE STANDARDS FOR PRIVATE AND PUBLIC UTILITY INSTALLATION. 17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. CONTRACTOR SHALL MAKE PROVISIONS TO KEEP ADJACENT ROADS CLEAN FROM SOIL BUILD-UP. 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. CONTRACTOR SHALL STABILIZE SITE, AND OBTAIN INSPECTOR APPROVAL PRIOR TO REMOVING EC MEASURES. UPON APPROVAL OF THE ENVIRONMENTAL INSPECTOR, COVERT BASIN TO PERMANENT FILTRATION BMP"s 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA. STREAM RESTORATION AND RELOCATION PROJECTS THAT INCORPORATE NATURAL CHANNEL DESIGN CONCEPTS ARE NOT MAN-MADE CHANNELS AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS: A. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OF PIPE SYSTEM SHALL BE PERFORMED. B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: 1. THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS 100 TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR (a) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF TWO -TEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS; (b) ALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A 10-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS; AND (c) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A 10-YEAR STORM TO VERIFY THAT STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM. C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE, THE APPLICANT SHALL: 1. IMPROVE THE CHANNELS TO A CONDITION WHERE A 10-YEAR STORM WILL NOT OVERTOP THE BANKS AND A TWO-YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL, THE BED, OR THE BANKS; 2. IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE 10-YEAR STORM IN CONTAINED WITHIN THE APPURTENANCES; 3. DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWO-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A 10-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR 4. PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS SATISFACTORY TO THE VESCP AUTHORITY TO PREVENT DOWNSTREAM EROSION. D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS. E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT CONDITION OF THE SUBJECT PROJECT. F. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION, HE SHALL OBTAIN APPROVAL FROM THE VESCP OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE. G. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATORS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE4 FACILITY TO THE RECEIVING CHANNEL. H. ALL ON -SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE I. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY J. IN APPLYING THESE STORMWATER MANAGEMENT CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS. K. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE STATE L. ANY PLAN APPROVED PRIOR TO JULY 1, 2014, THE PROVIDES FOR STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO (i) DETAIN THE WATER QUALITY VOLUME AND TO RELEASE IT OVER 48 HOURS; (ii) DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL RESULTING FROM THE ONE YEAR, 24-HOUR STORM; AND (iii) REDUCE THE ALLOWABLE PEAK FLOW RATE RESULTING FROM THE 1.5, 2, AND 10-YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEAK FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK FLOW RATE BY A REDUCTION FACTOR THAT IS EQUAL TO THE RUNOFF VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED CONDITION DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED CONDITION, AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS AS DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO § 62.1-44.15:54 OR § 62.1-44.15:65 OF THE ACT. M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS OF § 62.1-44.15:52 A OF THE ACT AND THIS SUBSECTION SHALL BE SATISFIED BY COMPLIANCE WITH WATER QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT (§ 62.1-44.15:24 ET SEC. OF THE CODE OF VIRGINIA) AND ATTENDANT REGULATIONS, UNLESS SUCH LAND -DISTURBING ACTIVITIES (i) ARE IN ACCORDANCE WITH PROVISIONS FOR TIME LIMITS ON APPLICABILITY OF APPROVED DESIGN CRITERIA IN 9VAC25-870-47 OR GRANDFATHERING IN 9VAC25-870-48 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATION, IN WHICH CASE THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS OF § 62.1-44.15:52 a OF THE ACT SHALL APPLY, OR (ii) ARE EXEMPT PURSUANT TO § 62.1-44.15:34 C 7 OF THE ACT N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 9VAC25-870-66 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATION SHALL BE DEEMED TO SATISFY THE REQUIREMENTS OF THIS SUBDIVISION 19. SITE NARRATIVE DESCRIPTION: THIS DEVELOPMENT IS COMPRISED OF 82.33 ACRES AND INCLUDES MULTIPLE PARCELS. THE DEVELOPMENT PROJECT AND SUBSEQUENT LAND DISTURBANCE AREA FOR SUBDIVISION IMPROVEMENTS IS APPROXIMATELY 51.63 ACRES OF LAND DISTURBANCE AREA AND CONTAINS NUMEROUS MATURE TREES AND STREAM BUFFERS TO REMAIN IN ITS NATURAL STATE AS FOREST OPEN SPACE, EXCEPT AS TEMPORARILY IMPACTED WITH UTILITY & STORM -WATER OUTFALL INSTALLATION. THE EXISTING SITE IS DEPICTED ON THE EXISTING CONDITION AND EROSION CONTROL PLANS. THESE PLANS PROPOSE THE CONSTRUCTION OF 83 SINGLE FAMILY HOMES, AND INCLUDES THE UTILITIES & INFRASTRUCTURE NECESSARY TO SUPPORT. THE DISTURBED AREA CURRENTLY CONTAINS SOME STEEP SLOPES TO BE IMPACTED WITH RIGHT-OF-WAY AND PUBLIC UTILITIES NEEDED FOR DEVELOPMENT OF THESE PARCELS. IN PARTICULAR, ROAD CONSTRUCTION, UTILITIES, AND REQUIRED PERMANENT STORM SEWER ARE LOCATED JUST -INTO OR IMMEDIATELY ADJACENT TO THE EXISTING STEEP SLOPES, WETLANDS AND THE RESOURCE PROTECTION BUFFER. HEAVY VEGETATION REMOVAL, EARTH MOVING AND CLEARING WILL BE REQUIRED TO INSTALL THE SEDIMENT TRAPPING FACILITIES. MOST OF THE SLOPES WITHIN THE DISTURBED AREA RANGE BETWEEN 5% AND 20%; INSTALL SUPER SILT FENCE, OUTLET PROTECTION, TEMPORARY DIVERSIONS, SEDIMENT TRAPPING FACILITIES AND PERIMETER PROTECTIONS, AS APPROPRIATE. THERE ARE ADJACENT WETLANDS TO REMAIN ONSITE AND ARE TO BE PROTECTED BY SUPER SILT FENCE. BARRICADE TAPE SHALL BE UTILIZED TO DELINEATE AREAS OF NON -DISTURBANCE AND SHALL BE INSTALLED AS NEEDED TO DEFINE AND PROTECT. SEE COE PERMIT FOR SPECIFICS RELATING TO APPROVED WETLAND OR W.U.S. IMPACTS. SPECIAL ATTENTION SHALL BE PLACED UPON STABILIZATION OF ALL CUT & FILL SLOPES, ENSURING THAT ALL RUNOFF POTENTIALLY ACQUIRABLE IS DIRECTED INTO THE SEDIMENT TRAPPING FACILITIES AT ALL TIMES. THE STORM RUNOFF ANALYSIS IS QUANTIFIED FOR THE ENTIRETY OF THIS DEVELOPMENT. SUSTAINABLE MANAGEMENT OF THIS SITE INCLUDES NUMEROUS SEDIMENT BASINS AND TRAPS, SIZED TO CAPTURE MOST ALL OF THE DENUDED RUNOFF DURING CUT AND FILL OPERATIONS. UPON STABILIZATION OF THE CONSTRUCTION AREA, AND AFTER 60% OF THE RESIDENTIAL HOMES HAVE BEEN CONSTRUCTED WITHIN THE WATERSHED OF THE PERMANENT SWM FACILITY, THE SWIM CONVERSION OF THE EXISTING WET PONDS SHALL COMMENCE. CONVERSION OPERATIONS SHALL BE COORDINATED WITH THE ESC INSPECTOR AND MAY INCLUDE ANY OR ALL OF THE FOLLOWING: • ENGINEERED LEVEL SPREADERS SHALL NOT BE INSTALLED UNTIL THE ENTIRE CONTRIBUTING UPSTREAM WATERSHED IS STABILIZED. • SWM CONVERSION SHALL OCCUR PRIOR TO REMOVAL OF UPSTREAM E&S MEASURES • SWM CONVERSION SHALL BE PERFORMED BETWEEN ANTICIPATED STORM EVENTS. • EXISTING PONDS WILL REMAIN AS IS, EXCEPT FOR MAINTENANCE, WHICH INCLUDES INSTALLATION OF STORM BARRELS, RISERS AND EMERGENCY SPILLWAY IN ADDITION TO PROVIDING RUNOFF REDUCTION AND WATER QUALITY TREATMENT, VIA (3) ENGINEERED LEVEL SPREADERS, BREEZY HILL WPO PROVIDES A TOTAL OF 17.3 ACRES OF PRESERVED -UNDISTURBED OPEN SPACE FOR DEDICATION AND RESTRICTION TO LAND DISTURBANCE. THE PRESERVED AREAS CONSIST OF THE DESIGNATED STEEP SLOPE AREAS, WPO BUFFER ALONG CARROLL CREEK AND REMOTE PERIMETER AREAS SURROUNDING THE LOTS AND REMAINING UNDISTURBED. IN CONCERT WITH CONVEYANCE OF THE ACQUIRABLE PORTION OF RIGHT-OF-WAY AND IMPROVED LOTS TO LEVEL SPREADERS THE REMAINDER OF THE IMPROVED AREAS IS CONVEYED TO REAR YARD SWALES AND CONVEYED TO THE EXISTING OUTFALL UTILIZING OUTLET PROTECTION; THE FEW REMAINING LOTS THAT DO NOT HAVE REAR YARD SWALES SHALL IMPLEMENT ROOF -TOP DISCONNECTION STRATEGIES DESIGNED TO ENSURE SHEET FLOW CONDITIONS. SOILS: THE EXISTING NATIVE AND UNDERLYING SOIL TYPE PRESENT WITHIN THE DISTURBED AREA ONSITE CONSIST PRIMARILY OF BUGLEY CHANNERY SILT -LOAM RANGING FROM 2% TO PRESERVED STEEP SLOPES AND CODURUS SILT LOAM 0-2%; BUGLEY CHANNERY SILT -LOAM IS CLASSIFIED AS HYDROLOGIC GROUP D, ARE CONSIDERED EXCESSIVELY WELL -DRAINED, AND INCLUDE VERY LOW TO HIGH ABSORPTION RATES (Ksat). THE PROPOSED SLOPES WITHIN THE AREA OF LAND DISTURBANCE ARE GENERALLY PROPOSED AT 4:1 OR FLATTER TO MINIMIZE EROSION, BUT SLOPES EXIST AT 2:1 ALONG THE STORM -WATER MANAGEMENT FACILITIES AND ALL EXISTING SLOPES ARE PRESERVED AT GRADES STEEPER THAN 4:1 . CODORUS SILT -LOAM IS CLASSIFIED AS HYDROLOGIC GROUP B/D, AND IS GENERALLY LOCATED WITHIN THE WPO BUFFER ALONG CARROLL CREEK. THESE SOIL DESCRIPTIONS INDICATE POTENTIAL CONCERNS SUCH AS A LIMITED SOIL DEPTH DUE TO BEDROCK, DOUGHTINESS CONCERNS & THE EASE OF EROSION DUE TO RAPID PERMEABILITY AND SEEPAGE FROM STEEP SLOPE AREA. ADDITIONALLY, THESE SOILS ARE KNOWN TO BE DROUGHT AND VERY ACIDIC, REQUIRING LIME TREATMENT AT APPROPRIATE APPLICATION RATES SO AS TO PROVIDE BOTH TEMPORARY AND PERMANENT LAND COVER. WATER QUALITY: THIS SITE IS LOCATED WITHIN HUC 02080204, RIVANNA RIVER WATERSHED- PORTION OF CHESAPEAKE BAY WATERSHED. A PORTION OF THE SITE, INCLUDING ADJACENT OFFSITE AREAS, DRAINS INTO THE EXISTING WET PONDS LOCATED ONSITE. THESE 4 WET PONDS SHALL BE RETROFITTED AND MAINTAINED TO PROVIDE THE SAME WATER SURFACE ELEVATION AND WILL REQUIRE INSTALLATION OF THE SPECIFIED RISER, BARREL AND EMERGENCY SPILLWAY FOR APPROPRIATELY MANAGE LARGER STORM EVENTS. THERE ARE SOME AREAS OF CONCENTRATED DRAINAGE THAT WERE UNABLE TO BE DIRECTED TOWARDS A PERMANENT FACILITY DUE TO TOPOGRAPHICAL CONSTRAINTS; THESE AREAS ARE MANAGED UTILIZING YARD SWALES AND OUTLET PROTECTION PRIOR TO RELEASE INTO THE RECEIVING CHANNELS, WHILE MORE REMOTE AREASS REQUIRE ROOFTOP DICONNECTION STRATEGIES. WHILE OTHER, ENVIRONMENTALLY SENSITIVE LOCATIONS SHALL CONVEY OFFSITE RUNOFF THROUGH THE LAND DISTURBANCE AREA UTILIZING CLEAN -WATER DIVERSIONS AND A LARGE CULVERT, WHILE CAPTURING THE DENUDED AREAS WITH ONSITE SEDIMENT TRAPPING MEASURES. THE REMAINDER OF THE MANAGED TURF IMPROVEMENTS NOT DIRECTING ITO A CONCENTRATED OUTFALL LOCATION, BMP SHALL HAVE ROOF TOP DISCONNECTION STRATEGIES AND FINAL GRADED SO AS TO PROMOTE SHEET -FLOW PRIOR TO EXITING THE DISTURBED AREAS. THE (4) EXISTING POND FACILITIES (PONDS 1, 2,3 & 4), SHALL BE PROTECTED FROM THE RECEIPT OF DENUDED RUNOFF AREAS PRIOR TO PERFORMING DAM MAINTENANCE & INSTALLATION OF AN ADEQUATE RELEASE STRUCTURE AND SPILLWAY. THE DEVELOPMENT OF SINGLE FAMILY LOTS AND ACCOMPANYING INFRASTRUCTURE WILL GENERATE APPROXIMATELY 57.97 LBS R OF PHOSPHOROUS. REMOVAL PROVIDED BY THESE FACILITIES IS EXPECTED TO BE 25.51 AND EXCEEDS THE REQUIRED REMOVAL BY 1.37 LBS/YR, INCLUDING RUNOFF REDUCTION AT EACH ENGINEERED LEVEL SPREADER LOCATION; OUTLET PROTECTION IS UTILIZED AT OUTFALL LOCATIONS WITH SMALLER POST DEVELOPED CDA'S.. POND#1 & POND#2 ARE EXISTING POND FACILITIES THAT WILL BE REFURBISHED WITH A NEW RISER AND BARREL, AND WILL REMAIN AS AMENITIES. POND#3 & POND#4 ARE EXISTING SHALLOW WET POND FACILITIES THAT WILL ALSO BE REFURBISHED WITH A NEW RISER AND BARREL, AND WILL REMAIN AS AMENITIES. THE ENGINEERED LEVEL SPREADER LOCATIONS HAVE BEEN ORIENTED TO DISCHARGE INTO THE ADJACENT B SOILS WITHIN THE FLOODPLAIN; ADDITIONALLY REAR YARD SWALES AND OUTLET PROTECTION MEASURES ARE UTILIZED FOR THE CONCENTRATED OUTFALL LOCATIONS TO REDUCE PRE -DEVELOPED CONDITIONS AND ARE CONTROLLED USING OUTLET PROTECTION INTO THE ORDINANCE CHANNEL LOCATIONS. SEE OUTFALL ANALYSIS. EROSION CONTROL MEASURES: THE ESC IMPROVEMENTS CAN ADEQUATELY CONTROL EROSION AND OFFSITE SEDIMENTATION USING DUST CONTROLS, A CONSTRUCTION ENTRANCE, DIVERSIONS, SILT FENCE, TREE PROTECTION, INLET PROTECTION, OUTLET PROTECTION AND CULVERT INLET PROTECTION; LOCALIZED SEDIMENT TRAPS & BASINS ARE INSTALLED INITIALLY TO CAPTURE RUNOFF PRIOR TO DRAINING ONTO STEEP SLOPES OR THE ORIGINAL OUTFALL LOCATION. GRADING OPERATIONS INVOLVE EXTENSIVE CUT AND FILL OPERATIONS IN PREPARATION OF THE BASINS, ROADWAYS AND BUILDING PAD SITES. INSTALLATION OF THE TREE PROTECTION, SILT FENCE AND SEDIMENT TRAPS OR BASINS SHALL OCCUR AS THE FIRST MAJOR STEP IN CONSTRUCTION AND PRIOR TO ANY ADDITIONAL GRADING OR ADDED EARTH MOVING OPERATIONS. ANY AND ALL SEDIMENT AND EROSION SHALL BE MINIMIZED UNTIL THE FACILITIES ARE FULLY OPERATIONAL. SHOULD THE CONTRACTOR ENCOUNTER AN OVER -BURDEN OF BEDROCK DURING GRADING OPERATIONS CONSULT WITH ENGINEER AND OWNER TO INVESTIGATE DESIGN ALTERNATIVES. DRAINAGE: THE LAND DISTURBANCE WITH THIS PLAN IS LOCATED ON THE BREEZY HILL SITE CONSISTING OF GRASSED AND WOODED AREAS, A PRIVATE ROADWAY, AND AN EXISTING RESIDENCE. CONCENTRATED DRAINAGE AND IMPERVIOUS COVER FROM THE RIGHT-OF-WAY WILL BE INTERCEPTED BY CURB INLETS AND CONVEYED WITH STORM SEWER INTO THE EXISTING WET POND LOCATIONS, PROVIDING RUNOFF REDUCTION. SMALL PORTIONS OF THE DEVELOPED SITE ALONG THE DENUDED PERIMETER SHALL EXIT AS SHEET -FLOW, WHILE THE CONCENTRATED REAR YARD AREAS AND TOE OF DISTURBANCE AREA WILL BE DIRECTED INTO THE ADJACENT SWM FACILITIES OR LEVEL SPREADER OUTFALL LOCATIONS AS APPROPRIATE TO MANAGE THE INCREASES IN RUN OFF. SINCE THESE SOILS ARE EXCESSIVELY WELL -DRAINED AND PRONE TO EROSION, THE ONSITE SOILS ARE CLASSIFIED AS D SOILS. STORMWATER RUN-OFF: THE PROJECT AREA CONSIST OF 82.33 ACRES, MOST OF WHICH IS CURRENTLY COVERED BY GRASSED PASTURE, MATURE TREES, AN EXISTING RESIDENTIAL HOME -SITE AND SUPPORTING BUILDING STRUCTURES. UTILIZING SCS METHODOLOGY AND NOAA ATLAS 14 RAINFALL DATA, THE EXISTING 1 YEAR RUNOFF FROM THIS SITE IS ESTIMATED TO BE 86.2 cfs, WHERE THE EXISTING 2 YEAR RUN-OFF FROM THIS SITE IS ABOUT 127.6 cfs; THE PRE -DEVELOPED DISTURBED AREA CONSISTS OF THE STEEP SLOPES, A LARGE CLEARED & GRASSED AREAS INCLUDING THE OLD HOME -SITE AND PRIVATE ROAD IMPROVEMENTS. THE ESTIMATED PRE -DEVELOPED CN VALUE IS 76 BASED ON THE SOIL TYPE, PAST GRADING AND HOMESTEAD IMPROVEMENTS. THE POST -DEVELOPED RUNOFF LOCATIONS ARE BEING MANAGED SO THEY WILL NOT OFFER ANY SIGNIFICANT CHANGE TO THE EXISTING RUN-OFF CONDITIONS AT EACH CONCENTRATED OUTFALL LOCATION TO THE FLOODPLAIN. THE'EXISTING' CONDITION FOR THIS SITE INDICATES A CORRESPONDING 1 YEAR PRE -DEVELOPED RUNOFF RATE OF 96.0 cfs FROM THE SITE. AS DESIGNED, THERE WILL BE A SIGNIFICANT REDUCTION OF RUNOFF EXITING THE SITE, ESPECIALLY WITH THE PROTECTIONS ALONG THE STEEP SLOPING AREA AND CONTIGUOUS 1 00'WPO BUFFER LOCATION ALONG THE FLOODPLAIN & OUTFALL LOCATIONS. DUE TO THE ONSITE SOILS, THE PRE -DEVELOPED RUN-OFF IS ESTIMATED AT 1.28.cfs; THE POST -DEVELOPED 1 INCH, 24 HOUR RAINFALL RUNOFF EVENT IS 9.90 cfs. THE ESTIMATED OVERALL POST DEVELOPED CN=82 AND THE ACCOMPANYING, TYPICAL(1 YR-24 HOUR) SITE RUNOFF TO EACH CONCENTRATED OUTFALL, NOT CONTROLLED WITH AN ENGINEERED LEVEL SPREADER SHALL BE REDUCED TO LESS THAN 80% OF THE PRE -DEVELOPED CONDITION AT EACH OUTFALL LOCATION. IN ADDITION TO E.L.S AT THE CONCENTRATED OUTFALL LOCATIONS A DEDICATION OF 10.17 ACRES SHALL BE FOREST -OPEN SPACE. THE TOTAL LAND DISTURBANCE ACCOUNTED FOR COMPLIANCE OF THIS PROJECT IS 69 ACRES. REFER TO THE TREATMENT VOLUMES PROVIDED, AS WELL AS THE WATERSHED HYDROLOGIC MODELS, POND ROUTING SUMMARIES, VRRM SPREADSHEET & RUNOFF REDUCTION, LAND -USE AND STORM EVENT SUMMARY TABLES. ADJACENT AREAS: THERE ARE MULTIPLE ENVIRONMENTALLY SENSITIVE AREAS TO REMAIN ONSITE; TO INCLUDE THE ADJACENT RIVANNA RIVER AND TRIBUTARIES THERE TO; WETLANDS AND STEEP SLOPES LOCATED IMMEDIATELY ADJACENT TO THE 1 00'WPO BUFFER ALSO EXIST AND SHALL BE PROTECTED TO REMAIN. DISTURBED AREAS SHALL DRAIN TO AN APPROVED SEDIMENT TRAPPING MEASURE AT ALL TIMES. PERIMETER EROSION CONTROL MEASURES MUST BE PROPERLY MAINTAINED TO PREVENT UNINTENDED IMPACTS TO ANY OFFSITE AREAS, AND PREVENT ANY SEDIMENT LADEN WATER FROM ENTERING THE OFFSITE WATERSHED. SUPER SILT FENCE SHALL BE UTILIZED ALONG THE ENTIRETY OF THE 100' RPA (WPO) BUFFER. SEQUENCE OF CONSTRUCTION: PHASE 1. CONTRACTOR SHALL COORDINATE INSPECTIONS, AS REQUIRED BY THE VSMP PERMIT PRIOR TO ANY SITE CLEARING OR GRADING OPERATIONS. 2. CONTRACTOR TO INSTALL CONSTRUCTION ENTRANCE, TREE PROTECTION, PERIMETER SILT FENCING, PREPARE STAGING AREAS AND SWPPP MEASURES- AS FIRST STEP IN CONSTRUCTION. 3. CLEARING AND GRUBBING SHALL FIRST BE LIMITED TO THAT NECESSARY TO INSTALL PERIMETER CONTROL DEVICES, THE TEMPORARY SEDIMENT TRAPS, BASINS, EARTHEN BERM CONSTRUCTION INCLUDING OUTFALL STRUCTURES, OUTLET PROTECTION. RISER, OUTLET PROTECTION OR MODIFIED OUTLET PROTECTION AT ANY AND ALL CONCENTRATED OUTFALL LOCATIONS. 4. INSTALL ADDITIONAL PERIMETER CONTROLS: SUCH AS SILT FENCE, SUPER SILT FENCE AND DIVERSION DIKES AS NECESSARY TO DIRECT UNDISTURBED AREAS AWAY FROM DISTURBANCE, AS WELL AS TO DIRECT ALL SEDIMENT LATENT RUNOFF TO EACH TRAP AND/OR BASIN. 5. PHASE 1 SEDIMENT BASINS AND SEDIMENT TRAPS SHALL BE MADE FUNCTIONAL PRIOR TO ANY ADDITIONAL ONSITE GRADING OR GRUBBING OPERATIONS. PHASE II 1. COORDINATE WITH ENVIRONMENTAL INSPECTOR PRIOR TO PROCEEDING TO PHASE II CLEAR AND GRUB THE REMAINDER OF THE SITE TO BEGIN THE EARTHWORK OPERATIONS AS NECESSARY TO ACHIEVE FINAL GRADES. LOCATE AND REPOSITION TOPSOIL IN NON-STRUCTURAL FILL LOCATIONS AS FILL OPERATIONS PROCEED. 2. AFTER OBTAINING COE PERMIT & ESC INSPECTOR APPROVAL, INSTALL LARGE CULVERT TO BY-PASS OFFSITE UNDISTURBED RUNOFF, PRIOR TO INITIATING FILL OPERATIONS ACROSS LARGE RAVINE TOWARDS REAR OF ACCESS ROAD. 3. PRIOR TO ROADWAY FILL AND CONSTRUCTION, CLEAR AND INSTALL PERIMETER CONTROL MEASURE, SUCH AS SUPER SILT FENCE DEPICTED ON PH 2 ESC PLAN 4. AFTER INSTALLING CULVERT, BEGIN FILLING OPERATIONS, CONSTRUCTION OF END WALLS AND REMAINDER OF STORM SEWER SYSTEM.. 5. SOIL STOCKPILES SHALL BE LOCATED IN AREAS THAT WILL NOT INTERFERE WITH CONSTRUCTION PHASES AND AT LEAST 15 FEET AWAY FROM AREAS OF CONCENTRATED FLOWS OR PAVEMENT. THE SIDE SLOPES OF THE STOCKPILE WILL BE ROUGHENED BY EQUIPMENT TRACKING; AND WILL NOT EXCEED 2:1 AND SHALL HAVE SILT FENCE INSTALLED ALONG THE PERIMETER TOE. 6. DENUDED AREAS SHALL DRAIN TO AN APPROVED EROSION CONTROL MEASURE AT ALL TIMES DURING CONSTRUCTION. 7. INSTALL ONSITE UTILITIES AND COMPLETE ACCESS ROAD TOWARD RUNNING DEER, INCLUDING ROADSIDE DITCHES, STABILIZATION AND CONSTRUCTION. MAINTAIN CLEAN -WATER DIVERSION UNTIL ROADSIDE DITCHES ARE STABILIZED FOR CONVEYANCE. 8. INSTALL REMAINING STORM SEWER INLETS, PIPES AND CULVERTS AS NEEDED TO ENSURE THAT ALL DENUDED AREAS DRAIN TO AN APPROVED SEDIMENT TRAPPING DEVICE AT ALL TIMES. 9. INSTALL INLET PROTECTION AS INLETS ARE CONSTRUCTED. 10. LIME, FERTILIZE AND APPLY TEMPORARY OR PERMANENT SEEDING TO ALL DENUDED AREAS IMMEDIATELY AFTER ACHIEVING FINAL GRADES. SOILS ONSITE ARE NONE TO BE POOR, RESULTING FROM EXCESSIVE ACIDITY. INCREASE TO, AND MONITORING OF THE SOIL PH VALUE SHOULD BE AN EARLY INTEGRATED STEP OF ANY SURFACE MANAGEMENT GOALS. 11. INSTALL PERMANENT OUTFALL PIPES TO EACH PERMANENT OUTFALL LOCATION, AS SHOWN. OUTLET PROTECTION AT EACH OUTFALL, PRIOR TO BECOMING OPERATIONAL. SEE PERTINENT SPECIFICATIONS FOR EACH. 12. AFTER THE CONTRIBUTING AREA TO EACH TRAP OR BASIN IS FULLY STABILIZED, AND PRIOR TO APPLYING TOPCOAT ASPHALT TO THE PAVED AREAS, OBTAIN APPROVAL FROM THE EROSION CONTROL INSPECTOR TO CONVERT FROM ESC TO THE PERMANENT STORM -WATER MANAGEMENT PLAN. UPON STABILIZATION, DE -CONSTRUCT SEDIMENT TRAPS AND/OR CONVERT SEDIMENT BASINS AS APPROPRIATE. . SEE DETAILS AND SPECIFICATIONS FOR SPECIFICS OF IMPLEMENTATION FOR EACH OUTFALL LOCATION. 13. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN FOURTEEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 14. PRIOR TO ANY REMOVAL OR ALTERATION TO ANY ESC MEASURE, COORDINATE WITH THE APPROPRIATE ESC INSPECTOR. 15. AFTER INSTALLATION OF THE REMAINING STORM SEWER MANHOLES AND CONNECTIONS TO THE OUTFALL LOCATIONS ARE COMPLETED, UPSTREAM INLETS AND STORM PIPES CAN BE PLACED ONLINE AND FINAL PAVEMENT TOPCOAT CAN BE APPLIED. 16. UPON STABILIZATION OF UPSTREAM DRAINAGE AREAS TO THE SATISFACTION OF THE ESC INSPECTOR, COORDINATE INSTALLATION OF THE ENGINEERED LEVEL SPREADERS AND PLACE ONLINE. 17. FINAL INSPECTION CHECKLIST FOR THE ENGINEERED LEVEL SPREADERS IS LOCATED ON SHEET 16. U 0 GO z cn O - u) Q m N y _ttlllrr w N m Old � U wu N� 0U OU >o0 U Li n L cnwn J Z_ V �� CO 10 O� Zw' w 2 z L L Lu LLz w9= OrnQo d w 0) Q Wfr yTH Op Dfp0 Christopher C. Mulligan Lic. No. 09/07/22 ww� OFESSJONAL S' LU G z � V Q J > z 0 z 0 m Q Ir � z ' ) y J z LLI 0 LU N z W 06 W U) Ir 0 W � w z O o_ U w 0 z O w o= m w 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 5 OF 22 (PER COUNTY G/S)— ll/// l l / / \ \\\\\\ \�\\�� J) '° % • \, # y -?\-." USACOE APPROVED tow ALBEMARLE COUNTY STEEP DELINEATION✓ SLOPES OVERLAY -MANAGED _ ND \ +.00 611 ALBEMARLE COUNTY STEEP SLOPES OVERLAY -PRESERVED 80-56B G. NEIL & SUSAN L. ROARK - \ \\\� //i �_ - _ ==-- �_ :�,.; , *..- --�. ✓" '.;-� / T4U&TF_E ' OF SUSAN L ROARK TRUST \ \\N \/i%�/����i,-i ,-_ _ �� . _ aa. �" -,� �B 3356/PG 003 ``�. ALBEMARLE COUNTY STEEP SLOPES OVERLAY CRITICAL - s \ \ \ \ \ \ \ x \ \\ \ \ \ \ \ \ \ \ \ \ \ 3 �� UPON COMPLETION OF PHASE 1 SS EROSION CONTROL MEASURES, l(Il ++em35s0 -- WETLAND AREAS L CONTRACTOR SHALL COORDINATE A T1 140 (LOCATED BY WILD GINGER FIELD CLEAR WEATHER PROPOSED ROADWAY CROSSINGDWIOTH I I \ III 'I `��4 �/ _ - - - - - \ \ 111 I W '' / /// - - - - -= - \ _ SERVICES DATED JANUARY, 2021) ENVIRONMENTAL INSPECTOR P PRIOR / / - / / - - _ I \ \ ( I I \ \ \ \ \ I \ \ \ \ \ TO INITIATING. SEE SHEET 3 FOR 1 I I \ \ \ \� \ ~ \ I I I II 11 l /l� / - - - - sso / - oS£ �'\• \J \ PERIMETER STREAM AREAS \ \ \ \ \ \ / \ o \ \ \ C I 1 / .67Ac. — \ \ \ \ I I 1 / / / //// / \ SEQUENCE OF CONSTRUCTION, I I I �IIIII I // IIII // \,' \��\\\\ (LOCATED BY WILD GINGER FIELD lJ \ \ \ \', TS I I I ST4 / / \ \ \ \ 1 a I I I IN v SERVICES DATED JANUARY, 2021) \�\\l \\ I 1/II \ \\ \ \ \ \ �1 \"o \ \ \ \ / L� \ \ •\ \ o ( I I I //llI/ / / / ----_ J60\ \\ \ �' I rMP�o- I G906E-'F0BY L. OR JOi/d\Pa _ \ \\\\\�\�\' INTERMITTENT STREAM AREAS I / DB3�61p-C, \ \ i1�.T (LOCATED BY WILD GINGER FIELD - ` \ ` ��\` SERVICES DATED JANUARY, 2021) 1 / 1) I I ' / I I I \ \ \ \ ` I I - \ \ �'• 100 YEAR FLOODPLAIN \ / SEE SEDIMENT BASIN \ I PER COUNTY GIS 1 \\ \ \ \ I I \ DESIGN SHEET 8 \ \ \ \ \ ( ) II II --- \ \ i li I III 1 = \ ! \ I x \\ \\\ \ — DORdrar v. bEy�i ' yy�r _ �(J/ /," > 1 1 I I I I / .75Ac. PLD ° \ I / _ 1 1 \ \ 1 1 I ( �\\\� \ \ \ \ 1 \ J L ° /' `- - - - - \TRUSTEES F DE&\ LIVING RYST O\ \ \ \ \ \ \ ` — (/ I \ I I I I Il < \ I I I I / ) / / / I I — — — — I I / DEOILk, ROGER R\. \ _1\ y / / \ I \ \ I \ I / \\ \( �Rb4/`RG\327 �OLc_ r \ Z v v ST9 T TMP —#1WKIN5;rAeP ��,\ \ \\\\\\\ \ \� 1 O I > 7 \ \Il I IIIIIIIIIIIIII e� Pw® PLDIP�®PD--- 1 _ I 1 I / �O \ \ \ rs oc DB 900/PG 114 I I V A\ �I III �IaY� � oar / v vvA vvv-�vs°^���;Llj�l� 11VAI. v A .��./ AIV( IIII I\ \\ A l l Il�ll I IA'- \ 1 KE �° \/// _ \\ \ \ ) \O 1 W \ \ \\�\ \\\\ e \�\\\ \\ �\ 'y�/ \60 I\\\ \ \ \ \ / \ MINIMIZE CLEARING TO N. I I \ \ \\\\ / l \ \ \ ` 1 \ J p I TMP \9\4-7\\\ \ \ � \�'t\ \ \� \ \ \ I I I / � / / � \ •� I I \ \ JJ I ) E \ � ( I I \9-X I I /� \ TMA 941-dH \ i W ILLS. (DREY FYF.4RR(�LiiAL\ \ �\ \ \ \ I I I ( \ \ \\1 \ \\\ I 1 \ l I Wd(lN CLARE CE M.\ & �EATRICE I ° �/0 KA(t6N\\AN�l➢ERS6!i\\\ \ \� \\\\ \\ \ \ \ \ \ I I I 1 /� \ PROVIDE BASIN &TRAP - �\ \ \ i / \ CONSTRUCTION ACCESS—�3H0 \ \ 11` III r 5 \ \ \ \ \ \ \ \ \ \ \\\\\ \(\ HD \ \�\\�/dc �1s I / De i sc�a\ \\\\ \\ wo \\\\ \\ _/ / r \ \ \ \ \ 1 r \� \ \\\�\\ \' \� ° \\ \��\ 10I ! I I _ I \\\\�\\ 1 I N'yl MINIMIZE DISTURBANCE VIA/ a \ \\\ \ \\\\\\�\t -\\\o\ \\\\1\ \ \ \ \ \ \ \ ) I / ` UTILIZATION OF EXISTING Io \ \ \ \ i ' \ \ \ !\\\�\\\\\IICLEARED AREAS FOR 9 \� \ \ \ \\ \ \ \\\\\ \\ I I I I l\ \ \ , I I ACCESS PICALSEE SE DIM \\ \ \ \ \\ DESIGN SHEET BASIN/ 'k \ �r \ �' \ SF I \\ \ \\ \ 1 III 11 NOTES: / \\ \ \ \ \\\l\\ / \ \ \\\\\\ \ \\�\\\\ \� \ \\ \ \ \ \ 1 \ I 1. CRITICAL SLOPES TO BE FENCED OFF PRIOR TO STARTING \ \ \ \ \\ \ \\ \\ \ \ \ \ _ _ \\ \ \ \ \ 1 \ I \ \ \\\ \`IIII CONSTRUCTION. PROPOSED PRELIMINARY LIMITS OF o \ DISTURBANCE IS CONCURRENT WITH, AND DOES NOT / \ 1 1 s4-sF—_— ENCROACH INTO THE CRITICAL SLOPES. � \ \\ \ \ \ � -_- - \ ) \ I III \ / III II I > WASI LENEbF ORENC GRI & \ \ \ \ \� \ \ \ \\ \ — —_—_— — \ / I I I \ \ 1 .32AC. ,_ CHARLENE FLORE�VCE GRIF}9N 17�g SF I�1 I I 1 I I 1 2. SILT FENCING SHALL BE UTILIZED AT THE PERIMETER OF / DB 5182/PG\256� \ \ 1 \\\ I / ^ _� \ 1 \� / j / ' / / / / l 1 / / I I \ / \ I 11 I I / / / / / / / IIII 1 \ \ I l`) n \I ST2 \ \ I I 1 ALL CLEARING &GRUBBING AREAS. TREE PROTECTION SHALL BE IMPLEMENTED ADJACENT TO SILT FENCE ON UPHILL SLOPES WHERE APPLICABLE OR AS DIRECTED TO PRESERVE STANDS OF TREES THAT SHALL REMAIN. IWASH RACK 3. PRESERVED STEEP SLOPES (>25%) TO BE MARKED IN THE / tX�,25' I Z ESS &\ FIELD BY ALBEMARLE COUNTY ESC INSPECTOR PRIOR TO \ GRES3 C�M'T LAND DISTURBANCE. / J \ DB 542\PG 2�9 o �\ \ i / \ \ \\\\ \ I I ( \ \ 4. FIELD MARKERS DELINEATING PRESERVED STEEP SLOPES � - I _ � \ \ \ \ ( Y \ \ \ \ \ ARE TO BE MAINTAINED THROUGHOUT THE COURSE OF / / o �/ \ \ \ \ \ \ I I I I 1 I ( \ \\\ \ \ )\ \\ \ \ / / 6Y?/i \ I I I I I / / _� / 1 I� \ / / THE PROJECT AND ARE TO BE REPLACED IF DAMAGED. \ \ \ \ \ \ \\ \ \\ III 1 1 \ I I \ l I I l I I I I I \ J / 5. NO PREMANENT OR TEMPORARY DISTURBANCE OF TMP 94- 1 1 A PRESERVED STEEP SLOPES IS PERMISSIBLE. FORWARD, HUGH REAL - PROPERTY EROSION CONTROL PLAN LEGEND TRUST U/AID I / / _ \ EWERq,, PAIA \ \ �\ \ I ' �� -� - - APRIL 30, I / - - D� 14,371 PG 149 \ \ L \ I a P _ — rs / f \ \ \ \ / / / \ \ W 3.02 CONSTRUCTION ENTRANCE CE 3.05 SILT FENCE SF 3.05 SUPER SILT FENCE SSF 3.09 TEMRARY DI ER ION DIKE DID-4 --- 4- 3.13 SEDIMENT TRAP ST 3.14 SEDIMENT BASIN SB 3.20 ROCK CHECK DAM 3.31 TEMPORARY SEEDING 8 3.32 PS PERMANENT SEEDING ❑PHASE PLo� PLo� I LIMITS OF CLEARING & GRUBBING *REFERENCE THE LATEST VERSION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH) FOR DETAILS REGARDING INDIVIDUAL CONTROL MEASURES. 2019 CIO TRUSTEE \ 1 I I / ) I I I I I c / / TMP 94-51 I I I I / \ JUAP EN EDORARD / STEPHANIE LYNN 1 \ I m TMP 94-57 �OD1WGH-T CYNTHIA- \ GtV \ _ \ i — — — RUNNING �EER�OR E SF53Ac. \5RST1 ZY-HIL KE\�W\I \ \\L\L\-\\ ILSTOCKPILE 3/A64TOPSO\ \\\ \ \ \ \\ I \ \ \ \ \\ \ .AREA W ti, �\\'_�--� ,_�--�_� MAINTAIN \ \\ `/ / / I I / / / \ \ \ \\ \ �_--- \ \ \_-' - -a ° \ \ \ \ \\ \ CLEAN-WATERLLC `(1 ~ r 1 \\\ \ TIL �E\ZPd(LL Add \ I- -'-o\I DECK SON ROADSIDE DICHES DB 549PG \36 ASP 1 3No ARE INSTALLED & \ \ / J / / \ I TMP �4-8 \ \ AWKINS, CLAR NCE \ - \3 STABILIZED IN PH. 2 \ ; ✓ / / / / ! \ - — \ \ ., / / /��° \ / M. oR edarRlca B.\�— 1 / \ TMP 94-8D \1 \� \ / / /® / CWD\ DB 658f�G 403 \ \ \ \ \ \ _ \ \ \ \ - - � - - -'- - - -- / —STELE. "PEA / OHE ASPHALT Db TO 4-46A3 rl VArrt1-MAP-TIN R OF JODI %�OENSE 1RYE5 / TMYP 94�C-49C 3°e1l-4 H0 GY \ 11 1 100 200 300 n C GO z O (Do Q m N w UL N m N N vi O U j o U Ld L ¢ rnwn w J z_ 0 rF� Z U a) co '00 V UL p z;U V O> z w w 0 z w C7 0 9 Lu Luz w= o w COO rn U ¢IL PyTH Op Df Christopher C. Mulligan Lic. No. 09/07/22 ww� OFESS10NAL zLLJ O V\J / Q � z � Cc vJ O J U J06 W V_ Q / J N 06 W o W - M� O If W LU cco Lu o z 0 U w 0 DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: SF �IAPPROX. LOCATION ALBEMARLE COUNTY STEEP / \\ �.�, ; DITCH 1, POA#5 / \ _ 100' YEAR FL OODPLAIN j .: - - \ SLOPES OVERLAY -MANAGED _ •` - .�: : PER COUNTY SEE PROFILE SHEET \ \ ;. , i FOR DITCH SECTION DITCH 1, POA#7 \ MATERIALS &TYPOFDITCH ITCH. 2, POA#6 ALBEMARLE COUNTY STEEP / SEE PROFILE SHEET LINING REQUIRED \\ y + SEE PROFILE SHEET 'i r: _ l / SLOPES OVERLAY - PRESERVED V�� v " _ _ Y _ A� 7 / 1 FOR DITCH SECTION, \\ \\� \\— \\\\ \"1,., /' ,- FOR DITCH SECTION, \ OPT m _ _ r = \\ \ I MATERIALS & TYPE OF \ LOWER DITCH, POA#2 o MATERIALS &TYPE OF \ \ \ �' / _ \ DITCH 2, POA#3 - ( \ 1 \+ \ LINING REQUIRED \ \ \ \; LINING REQUIRED SEE PROFILE SHEET E SF � / / � \ �\ SEE PROFILE SHEET � - � � 1 Fw. �r / \\\ ��\\ �' + FOR DITCH SECTION, FOR DITCH SECTION, Op J \ \. \ / 4 ®_ f ALBEMARLE COUNTY STEEP \\ \\\ MATERIALS & TYPE OF MATERIALS & TYPE OF - __i OP 1)� ;T TMP 80-566 SLOPES OVERLAY - CRITICAL LINING REQUIREDw \ \ \ \ \\ \ 3 /u \ \ \\\ DITCH, POA#2A i LINING REQUIRED - \ -i G. NEIL & SUSAN L ROARK \ x \ I \ __ w SEE PROFILE SHEET \ \ \ \ \\ ` \ \ \\\ ,FOR DITCH SECTION, - S?F o -- -�1' / �I - �� \ C, `:TAUS7E-L'S OF SUSAN L. ROARK TRUST s , MATERIALS & TYPE OF � g 1 LINING REQUIRED` y �'S �B 3356/PG 003 � U � � (L GATED BETLAND Y WISED GINGER FIELD 41-70 q- -0a "i� --aso. ii ��. SERVICES DATED JANUARY, 2021 ) -- -v .i S� \ l� ✓ � \ _ �� . -_ - \ \ ' • J 3R �"o � J \ � 1 I I II m£ �� _ �� PERIMETER STREAM AREAS T6 I - / I II///�/ b , S / / ��_ �SSF� \ I� I I 35� o 'C �� ) \" 1 (LOCATED BY WILD GINGER FIELD SSF 1' J U \ \ SERVICES DATED JANUARY, 2021) \ 1 •h. SSF I / /' A , �/ /`�� - _ \ \\�� UPPER DITCH, POA#2INTERMITTENT STREAM AREAS \\\\ �\ ` \ 0 v I 1 o SEE PROFILE SHEET vvv FOR DITCH SECTION, (LOCATED BY WILD GINGER FIELD �� ��� � Tr MATERIALS & TYPE OF A;*\ \ \ SERVICES DATED JANUARY, 2021) SEE IMENT BASIN o \I 1 !'. / //j/IP _ aso n LINING REQUIRED \\ \ \ \ \ SEE NOTE s r / DESI S ET 8 I �/ P / / GQOOE�TOBY L. OR JO11a d DB 3�56�PG- DP3 �' \ \ .\ ��\�\-` 100 YEAR FLOODPLAIN = o\' (PER COUNTY GIS) 09f— \ \ \ \ I I + / / - + \ \ \1\ P1 I I I / I I / - - - _ \ \ \ \ ♦ DENOTES POTENTIAL NON-STRUCTURAL FILL LOCATIONS. _ \ \ P1 \ \ \ \ \ \ \ \ \ \ SF \ COORDINATE W/ OWNER (TMP-94-48) 1 v \ 1 e I I ^ / x v vp`30-5 A / I MD \\ DE:Or USTREOEGSER P-,&\ Y . S -k LIVING 7ReT F DEWL \ \ - < F i \ u \ / o /J / I \ I I I I I I I / / DD ' \ 1 I ' - \ \ 64 327 / �• I �v III ✓ / / V I / 3a %RG\ \ 1 1 \ / \ / I IIIII I 5T 7Ac/. DITCH AEG\\ \ \ \ DITCH, POA#4 SEE PROFILE FOR DITCH ` \ \ P1 SEE PROFILE SHEET N \ \ \ THIS ENTRANCE SHALL ( ` I 9 DITCH 2, POA#1 � pg 90L BE CLOSED (NOT TO) /) J 7 DITCH 1,IPOA#3I \\ \ , \\ MATERIALS &TYPE OF ` IIIII MU �— � I \ SEE PROFILE SHEET \ 11 I I r \ I \ FOR DITCH SECTION, LINING REQUIRED Via/ BE UTILIZED FOR \ I I I I FOR DITCH SECTION, \ \ J \ - \ I \ SEE PROFILE SHEET \ \ I I I I I I \ \ \ \ \ - - - \ MATERIALS & TYPE OF',I ��) { l / CONSTRUCTION \ m dI I I I ' \ \ \� \ \ \ MATERIALS &TYPE OF \��I \ 1 ) I b FOR DITCH SECTION, \ \ \I I I I I I / 380 - \ LINING REQUIRED ao MATERIALS & TYPE OF \ \ \ \ 1 1 \ I / / \ \ \ \ \ LINING REQUIRED / \ \ \� \ \ \ „k LINING REQUIRED \ \\ \ \ \ \ \ \ \ I I - \ \ \ SSF \ \ \ \\\ \� \ \ I \ +d \\\ 11 I I / — \ LI . f \ \ TM8 941-dry \ ( i MILLS, A\11DP\EY NEAR�(.��i\\L\\\ NOTES: \\\\ / /l / /dflN%/DB 68�CE'11\15I�EATRICE, ° �DBK}173C�5/� �8556!\\ \\\\\ b\\ \` \\ \ \\\ 1.G�\ / / 390 \ \ O DITCH PROFIOLE SHEET \\ / I /� o / \ \ \ \ \ \ \ \ \\\ \\\\\\\ \ 1 \\ \ \ \ \ \ \ i 1 - \ \ \ \\ FOR DITCH SECTION, 1. CRITICAL SLOPES TO BE FENCED OFF PRIOR TO STARTING \ \ I / / / / / / a \ \ \ \ \ \\ \ \ \ / �\ \\\\\\ / \\\\\\\\\ \I\\\ \ / \\ \ MATERIALS OFCONSTRUCTION. PROPOSED PRELIMINARY LIMITS OF LINING DISTURBANCE IS CONCURRENT WITH, AND DOES NOT II o I \ \ III II 1 IIIII I I m ) \ 1 I I ENCROACH IIII'- INTO THE CRITICAL SLOPES. 2. SILT FENCING SHALL BE UTILIZED AT THE PERIMETER OF \ / 6 \ e \ �\ \ \ \\\ \ \\\ \\\\\ P1 I 1 \ 1 ' / \ \ \ \\ \ I I\ \\ III , I I EDI AS 1 \ \ \ \ \\\\ \\ ALL CLEARING & GRUBBING AREAS. TREE PROTECTION SHALL BE IMPLEMENTED ADJACENT TO SILT FENCE ON UPHILL SLOPES WHERE APPLICABLE OR AS DIRECTED TO v V PRESERVE STANDS OF TREES THAT SHALL REMAIN. 3. PRESERVED STEEP SLOPES (>25%) TO BE MARKED IN THE FIELD BY ALBEMARLE COUNTY ESC INSPECTOR PRIOR TO 4001 LAND DISTURBANCE. 4. FIELD MARKERS DELINEATING PRESERVED STEEP SLOPES ARE TO BE MAINTAINED THROUGHOUT THE COURSE OF / TMP 94-8F tNA51-IINGTbN,-ALICE BOYD & THE PROJECT AND ARE TO BE REPLACED IF DAMAGED. / - J CHARLENE FLORENCE GRIFNN \ \ \ \ \ �; - TS / / / I SSF I I 1 ^ / OUTFACE STORM SEWER \ � � 1 / 1 - OB 5182/P6256 \ A \ V A \� VA VA P i< / rT SF OPs INTO SEDIMENT BASIN \ \ I 5. NO PREMANENT OR TEMPORARY DISTURBANCE OF / / / \ 1 \ \\\ \Ill\ \ \\\ fi M / / / / \ THROUGHOUT T I IP f� I PRESERVED STEEP SLOPES IS PERMISSIBLE. / / / \ - \� 1 1 \\ I I \ J/ / ' ) ( / / / \ II/ CONSTRUCTION l \ IF I II \ F II 6. REFER TO SEQUENCE OF CONSTRUCTION & NARRATIVE ON / - \ \ \ \ \ ^ \ 1 J J TS PS / / SHEET 3. / A \ \ \A V % i v�\ �� _A� / I // '/' / i STAGING AREA 7. PRIOR TO FILL AND ROAD INSTALLATION ACROSS DD INTERMITTENT STREAM, ENSURE COE PERMIT FOR IMPACTS OP HAVE BEEN OBTAINED &INSTALL LARGE BY-PASS CULVERT I�R\ESS I 16RESS CAM \ \\ \ 1 1 I I AND END WALLS AS FIRST STEP. DB 542vPG 21�9 EROSION CONTROL PLAN LEGEND TMP 94-1 1A FORWARD, HUGH REAL 3.02 ENTRANCE CONSTRUCTION CE PROPERTY / / - \^ r` \\ IMP 94-$E TRUST U/A/D I / EW�RR�, L PATRI�IA \ \ \\ \ J ✓ I \ \ ` 1 I / \ WW / / / - \ \ w \\ $ CONSTRUCTION APRIL 30, I / � -�' �- D� 1 37/PG 149 \ ROAD STABILIZATION O 2019 CIO 3.03 CRS cas TRUSTEE 3.05 SILT FENCEIP K 48 EEZHL ATE\S\W\I� STORM DRAIN INL5�31G364 3.0 \ n PROTECTION \I I J \ \ \ — �2.2 3.18 OUTLET PROTECTION ❑TEMPORARY DIVERSION DIKE O TMP 94-51 / JU,DWD SEDIMENTTRAP R1 1 I1 I I ( X—X III I i313 T08 PENTRANCENOTTO �EEZY HLL ASTEPHANIE LYNN UTILIZED FOR \ St5\\ \(C\\ 314 SEDIMENT BASIN \ J O ® \ \ \ \ \ \ \ 1 asP 1 f° CONSTRUCTION X \ \\ \ \ / / WINS \ - \ \ \ 1_ \ I M. OR B841HIGb B. x - \ \ \ \ \ \ \ \ uL°��° 3.31 TEMPORARY SEEDING TS \\ \ \ \ /\ \\ \ \ / l l \ DB 658/eG 403 1 TMP 94-57 \ ' \ \ — — / l 1 I \ TMP 94-8D\=- 3.32 PERMANENT SEEDING pS O kir CYNZHIA / \` \ \ / / \IOHN L KUNDZIN ,f \ 3"0 �3H \ SF l / / : WRY R KUNDZI / \\ \ \ < \ I \ \I\ \\\ — \��\ ♦\TMP 91-47A 3.35 MULCHING MU - �- \ ( ) \ ,__- - \ - - MAINTAIN ,CLEAN -WATER DIVERSION FOR OFFSITE ❑TREE PRESERVATION O - - \ - - = t -\ `- -- - - RUNOFF TO PROTECT 3.38 TP - \ / TMP 94-49C 1c,61 \ AND PROTECTION RUNNING�oEERORIVE \ ��,-perT CONSTRUCTION AREA UNTIL � \ \> / ,yy, ` / I / Ec � I I \ \ \ T \ �14-�471 \ \\ \ \ \ \ ROADSIDE DITCHES ARE; _ - \ \ E y \ ° c3H0 3.39 DUST CONTROL NU N U�T INSTALLED AND STABILIZED - - \�y \ \ \ \\ \ \ 9B I 1 \ \ \ PHASE 2 LIMITS OF - U T \\ �! °H[ \ \ ` / ° /0"E / - - - asPHnLt °RIVE / / / / / / / i' \ \ \ \ \ \ \\ \ \ \ \ \ T W - O _ 1 �= i / 1 I I\ \) \ \ \ \ \o \ \ \ �uLo�u�°� —� \ \ /' °� J TMP1-=4FA3 Cam_ oI/ l \ \ \ \ \ \ I CLEARING &GRUBBING �e P - ° — — —°\ \ \ \ \ \ \ \ / i FL4NN -MAKIN R �R JODI _ \ \ *REFERENCE THE LATEST VERSION OF THE VIRGINIA — $ — — \ ° / / ^ — — — _ / / / \ \ \ \ \ \ \ \ TMP 9��46A 1� EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH) FOR DETAILS REGARDING INDIVIDUAL CONTROL MEASURES. 100 0 100 200 300 SCALE: 1 "=100' 0 GO z O Gn E Q m N N m Old w N N O � vi w ^ w _jLu JZ V)5; CA -100 O� pWv Zww 0 o V LLZ Z 0000 LL O5; W J2 cnQd d w co 0) ¢ W z O d 0 U Lu w 0 co z O W m Lu 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD �o sPj TH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSI ONAL E�Gl} z Lj O r V J z Q �� �y W O CE vJ � U) O J C) J 06 0 W LLJ N W o6 z W o O W W DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 7 OF 22 A EXISTING (PAVEMENT 51 L A "IF - III1IT h TING GROUND SIDE ELEVATION I WASH RAO b R (OPTIONAL EXISTING C. +><' [PAVEMENT VDOT #1 COURSE AGGREGATE B- ``PoSITIVE DRAINAGE I o TO SEDIMENT TRAPPING DEVICE r 'MUST EXTEND FULL WIDTH OF NGRESSAND PLAN VIEW EGRESSOPEMTION SECTION A -A FILTER CLOTH �S7 r REINFORCED CONCRETE SECTION B-B ,,[CONSTRUCTION ENTRANCE DETAIL NOTTOSCALE SILT FENCE MINIMUM IF FLOW IS TOWARDEMMNKMENT FLOW STONE COMINATION -CLASS I RIPRAP 'VDOT #3, #357, #5, #56. OR" R #57 COARSEAGGREGATE TO REPLACE SILT PENCE IN -HORSESHOE "MEN HIGH VELOCITY OF FLOW IS EXPECTED �1CULVERT INLET PROTECTION IrIF NOT TO SCALE 3.02-2 KI�b" 1. SET THE STAKES MAX FLOW 3. STAPLE FILTERMATERIALAND EXTEND ITINTOTHETRENCH 2. EXCAVATE A 4"xr UPSLOPE ALONG THE LINE OF STAKES. 4. BACKFILLAND COMPACT THE EXCAVATED SOIL FLOW SHEET FLOW INSTALLATION PERSPECTIVEME I W) MAX A D LCWJ I POINT A SHOULD BE HIGHER THAN POINT R. DRAINAGE WAY INSTALLATION (FRONT ELEVATION) �1SILT FENCE DETAIL (W/O WIRE SUPPORT) NOTTOSCALE 3.05-2 TEMPORARY SEDIMENT TRAP CALCULTIONS H Z WEIR DRAINAGE WETVOL. D1 WET VOL. DRY VOL. D2 DRY VOL. lo. A 8 C (Fr) (FF.) LENGTH AREA (FT.) (ACRES) (REQ.)(CY) (FT.) (PROV.)(CY) (REQ.)(CY) (FT.) (PROV.)(CY) 1 330 334 3W 30 2.0 60 0.4 28.8 4.0 400 28 2 48C 2 3613 365.5 367 2T 25 60 0.4 29.5 4.0 297 29.5 17 29.7 1 ORIGINAL GROUND DRY VOLUME N ELEVATION ORIGINAL GROUND EL=B ELEVATION FILTER CLOTH CLASS[ RIPRAP EL=A 'COARSE AGGREGATE CROSS SECTION OF OUTLET •NOTE: SEDIMENTTRAPSHALLNOTBE REMOVED BEFORE COUNTY m HASDEEMED STABILZED I RECOMMENDED DE WA TERING SYSTEM FOR SEDIMENT BA SINS PROVIDE ADEQUATE STRAPPING POLYETHYLENE CAP TACK WELD t_ I __ PERFORATED POLYETHYLENE* _- DRAINAGE TUBING, DIAMETER VARIES (SEE CALCULATIONS IN APPENDIX 3.14-A) \\ II 1 DEPTH VARIES AS REQUIRED FOR" DRY " STORAGE WET " FERNCO-SNSTOLE " COUPLING STORAGE DEWATERING ORIFICE, SCHEDULE 40 STEEL STUB 1-FOOT MINIMUM, DIAMETER VARIES (SEE CALCULATIONS IN CORRUGATED METAL RISER APPENDIX 3.14-A) NOTE: WITH CONCRETE RISER, USE PVC SCHEDULE 40 STUB FOR DEWATERING ORIFICE *DRAINAGE TUBING SHALL COMPLY WITH ASTM F667 AND AASHTO M294 SOURCE: VA. 031MC nATL E•14 -15 OUTLET (PERSPECTIVE VIEW) "COARSE AGGREGATE SHALL BE VOOT AD, #357 OR #5. SEDIMENT TRAP ST NOT TO SCALE ssF DETAIL E-3 SUPER SILT FENCE 10l 'f t 4 IN MIN. GROUNDSURFACE fi IN MIN. 2% IN DIAMETER 7GALVANIZED CHAIN LINK FENCE WITH GALVANIZED WOVEN BUT FILM GEOTEXTILE STEEL OR ALUMINUM POSTS ELEVATION CHAIN LINK FENCING WOVEN SLIT FILM GEOTEXTILE FLOW EMBED GEOTEXTILE AND CHAIN LINK FENCE 8 IN MIN. INTO GROUND CROSS SECTION CONSTRUCTION SPECIFICATIONS 1. INSTALL 2% INCH DIAMETER GALVANIZED STEEL POSTS OF 0.095 INCH WALL THICKNESS AND SIX FOOT LENGTH SPACED NO FURTHER THAN 10 FEET APART. DRIVE THE POSTS A MINIMUM OF 36 INCHES INTO THE GROUND. 2. FASTEN 9 GAUGE OR HEAVIER GALVANIZED CHAIN LINK FENCE (236 INCH MAXIMUM OPENING) 42 INCHES IN HEIGHT SECURELY TO THE FENCE POSTS WITH WIRE TIES OR HUG RINGS. 3. FASTEN WOVEN SLIT FILM GEOTEXTILE AS SPECIFIED IN SECTION H-1 MATERIALS SECURELY TO THE UPSLOPE SIDE OF CHAIN ONE FENCE WITH TIES SPACED EVERY 24 INCHES AT THE TOP AND MID SECTION. EMBED GEOTEXTILE AND CHAIN LINK FENCE A MINIMUM OF 8 INCHES INTO THE GROUND. 4. WERE ENDS OF THE GEOTEXTILE COME TOGETHER, THE ENDS SHALL BE OVERLAPPED BY 6 INCHES, FOLDED, AND STAPLED TO PREVENT SEDIMENT BY PASS. 5. EXTEND BOTH ENDS OF THE SUPER SILT FENCE A MINIMUM OF FIVE HORIZONTAL FEET UPSLOPE AT 45 DEGREES TO THE MAIN FENCE ALIGNMENT TO PREVENT RUNOFF FROM GOING AROUND THE ENDS OF TIRE SUPEP SILT FENCE 6. PROVIDE MANUFACTURER CERTIRCATION TO THE INSPECTION/ENFORCEMENT AUTHORITY SHOWING THAT GEOTEXTILE USED MEETS THE REQUIREMENTS IN SECTION H-1 MATERIALS. 7. REMOVE ACCUMULATED SEDIMENT AND DEBRIS WHEN BULGES DEVELOP IN FENCE OR WHEN SEDIMENT REACHES 25% OF FENCE HEIGHT. REPLACE GEOTEXTILE IF TORN. IF UNDERMINING OCCURS, REINSTALL CHAIN LINK FENCING AND GEOTEXTILE. MARYLAND STANDARDS AND SPECIFICATIONS FOR SOIL EROSION AND SEDIMENT CONTROL 2011 U.S. DEPARTMENT OF AGRICULTURE WRYWJD 1. DEPARTMENT OF 1. ENVIRONMENT A A 3d� de PLAN NEW PIPE OUTLETTO FIAT AREA WITH NO DEFINED CHANNEL a- 1 SECTION A T FILLER CLOTH KEY IN 6'-9'; RECOMMENDED FOR ENTIRE PERIMETER A A 3d6(MIN.) PIPE OUTLET TO WELL - DEFINED CHANNEL PLAN VIEW La r D7 - 9 SECTION AA FILTER CLOTH KEY IN 6"-9'} RECOMMENDED FOR ENTIRE PERIMETER NOTES, 1. APRON UNING MAY BE RIPRAP. GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. OUTLET PROTECTION 3.13-2 V F NOT TO SCALE DIVERSIONS Io% SETTLEMENT 0.3' FREE BOARD subb IIIII I Mill I milli I milli I Milli I WAIIII I milli I milli I Willil III E011111111111111111111 I Milli 111111111 lill TYPICAL PARABOLIC DIVERSION IOR BICT I.EMENY l 0.3' MEE BOARD I I I I I I TYPICAL TRAPEZOIDAL DIVERSION 10% SE TLEIMNT �. 0.3, FREE BOMB I I I I 08910M NOII 4@11T TYPICAL VEE-SHAPED DIVERSION Source: VC, DSWC Plate 3.12-1 DEWATERING ORIFICE BASIN # ORIFICE FLEXIBLE INVERT DIAM. (IN) TUBE(IN) (FT) 1 6.0 8.0 369.25 2 4.0 6.0 348.30 DA 4AYC 200AYC20AYC117.AC C141 C117 ACY C149 WET VOLUME REQ. 1892 CY 503 CY2CY72CYl�Ci 40.3i9 9.79 CDRY VOLUME REQ. I 1 1 184.92 1 CY 1 65.66 1 CY 1 140.03 1 CY 1 127.97 1 CY 1 117.25 1 CY 1 40.2 1 CY 1 154.1 1 CY 1 113.9 1 CY 1 91.79 1 CY • -- Q � IO III III III © Q • " • - -- • 11 • 11 11 11 • 11 • 11 : • 11 - • Mel ilismarTo 1 - • -- . 11 . 11 . 11 11 .. 11 11 :: 11 • 1 • 11 • 1 1 1 - • -- •• 11 - •• 11 - 111111111111111111111101TO1 0=111 •1. 11 11 - • : • -- . 1 1 = 1 11=EpMr1 1 1 1 • • 1 1 - . "If • 11 • 1 11 1 1 - KE GRAVEL (1Y MIN. DEPTH) -] 8'MIN RUNOFFWATER NTH SEDIMENT IJI , \� WIRE MESH SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION ISAPPLICABLE WHERE HEAVY, CONCENTRATED FLOWSARE EXPECTED BUT NOT WHERE FUNDING MOUND THE STRUCTURE MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE TOADJACENT STRUCTURES AND UNPROTECTED AREAS. GRAVEL SHALL BE VD01 #3, #357, OR #5 COARSE AGGREGATE GRAVEL AND WIRE MESH �1DROP INLET PROTECTION r NOTTO SCALE 3.07 FILTER CLOTH UNDERLINER (PREFERRED) GRANULAR FILTER MINCOARSETHICKNESSAGGREGATE6 MIN. THICKNESS J TOE REQUIREMENTS FOR BANK STABILIZATION NOT TO SCALE 3.18 MINIMUM TOP WIDTH (W) REQUIRED FOR SEDIMENT TRAP EMBANKMENTS ACCORDING TO HEIGHT OF EMBANKMENT (FEE T) SOURCE: VA. DSWC Sediment Basins DESCRIPTION SB1 SB2 DA 13.8 AC 8.23 AC TOTAL VOLUME REQ. 1849 CY 1103 CY TOTAL VOLUME PROVIDED 1852 CY 1105 CY BOTTOM BASIN EL 370.00 346.00 TOP DAM EL 380.00 353.00 RCP RISER EL 377.86 351.00 RCP RISER DIAMETER 60.0 IN 36.0 IN HDPE OUTLET PIPE INV OUT 370.00 340.00 HDPE OUTLET PIPE DIAMETER 24.0 IN 18.0 IN HDPE OUTLET PIPE LENGTH 60.0 FT 1 319.0 FT HDPE OUTLET PIPE SLOPE 0.0167 FT/F:Tl 0.0594 FT/FT H HO W 1.5 0.5 2.0 2.0 1.0 2.0 2.5 1.5 2.5 3.0 2.0 2.5 3.5 2.5 3.0 4.0 3.0 3.0 4.5 3.5 4.0 5.0 4.0 4.5 ORIGINAL GROUND ELEV. PLATE. 3.13-1 SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPABILITY AND EASE OF MAINTENANCE ARE DESIRABLE. �TIDROP INLET SEDIMENT TRAP (ST) JI NOT TO SCALf CORRECT METHODS OF TREE FENCING 1.u. r CORRECT TRUNK ARMORING TRIANGULARBOARD FENCE TREE PROTECTION FENCING DETAIL Ir NOT TO SCALE FENCE FERTILIZER PLACEMENT 3" MACH W MULCH 3" MULCH PLACE FERTLQER HERE. SPREAD EVENLY ARG NO SU�j RFACE OF ROOT BALL PLACE FERTILIZER HERE. SPREAD EVENLY MOUND SURFACE OF ROOT BALL BALLED & BURLAPPED BARE ROOT PLANTS BARE ROOT PLANTS & CONTAINER PLANTS WITHOUT TAPROOT WITH TAPROOT FERTILIZER MATERIALS FERTILIZER RATES FERTILRER MATERIALS SHALL CONFORM TO THE SECTION 244 OF THE VDOT ROAD MD FRIDGE SPECIFICATIONS. 2 OUNCES PER VINE AND GROUND COVER UP TO ONE GALLON CONTAINER. 8 OUNCES PER SHRUB BASE ROOT OR ONE GALLON CONTAINER. THE FOLLOWING INFORMATION SHILL BE SHOWN ON A TAG ATTACHED TO FERTILIZER BAG 16 OUNCES PER SHRUB. BALLED MO BURLMPEO OR 2 THROUGH FIVE 1. THE NAME MO ADDRESS OF MANUFACTURER GALLON CONTANER. 2. NME OF MATERIAL 24 OUNCES PER TREE UNDER 2" CALIPER INCLUDES MULTI -STEMMED MD 3. NUMBER OF NET POUNDS OF READY MIXED MATERIALS INTHE PACKAGE EVERGREEN TREES UNDER 8") 32 OUNCES PER TREE OVER 2" CALIPER (INCLUDES MULTI -STEMMED 4. CHEMICAL COMPOSITION AND ANALYSIS AND EVERGREEN TREES OVER 8'IN HEIGHT) S. GUARANTEED ANALYSIS (VA DEPARTMENT OF AGRICULTURE) THE FERTILIZER SHALL BE APPLIED AS A SURFACE APPLICATION. SPREAD EVENLY OVER TOP OF THE ROOT BULL. AND PLANT PIT SOIL PRIOR TO MULCHING. MULCHING MATERIALS FERTILIZER SHALL NOT BE MIXED WITH THE SOL MIXTURE. BARK -SHALL BE DOUBLE SHREDDED HARDWOOD BMK, [XSl FREE, BROWN IN COLOR AND SHALL MWORM TO THE NATIONAL BARK AND SOL PRODUCER ASSOC. STANDARDS FOR CLASSIFICATION, PARTICLE SIZE, PERCENTAGE WOOD CONTENT, MOISTURE RETENTION AND PH RATING. OTHER MULCH MATERIAL Mn BE USED WITH APPROVAL FROM THE ENGINEER. APPROVED MULCHES TYPE DOUBLE SHREDDED HARDWOOD BASK 3" FERTILIZER AND MULCH DETAIL 1201.07 SPACING BETWEEN CHECK DAMS L = THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION SOURCE: VA. DSWC PLATE. 3.20-2 glob 3.38-2 I SOURCE: VA. DSWC SOURCE: VA. DSW aa-- -- n•11�91�����- =11 II II n u u-Il,f: -II-II-II-II-II-II-•�:� 11=11=11=II=11=11 �-- 11=11=II=11-. -11=II=11=, II=II=II=II=II=1�=�I=n-II-,. I1=11=11=11=I . I U I-II-II-II-Ti-u-n H1=11=11=II=11=11 i=II=11=11=1 11-u-u- I -I I-II-11=11=R-TI-11= - II II II II=I II II II=II II II II II -II II 11=11=11=11=II=11• - I 1111'1RE1i�ItLT'AIP10.1 ,. 711111 1/ GRAVEL FILTER' RUNOFF WATEF � � WIRE MESH FILTEREDWATER SEDIMENT)w///./�'T CONCRETE GUITER \\\ 12" `CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. *GRAVEL SHALL BE VDOT #3, #357, OR #5 COARSE AGGREGATE GRAVEL CURB INLET PROTECTION DETAIL NOTTOSCALE SEDIMENT BASIN SCHEMATIC ELEVATIONS CREST OF EMERGENCY SPILLWAY WATER DESIGN HIGH WAR (SIGN STORM ATE MIN. 1.0' 0.5' _MIN. 1.0' M RISER CREST 67 C.Y. AC. 1 DRY - STORAGE DEVICE NG 67 C.Y./ AC. WET' STORAGE SEDIMENT CLEANOUT POINT ( WET - STORAGE REDUCED TO 34 C.Y./ ACRE) DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY Ay„ DESIGN HIGH WATER �1 (25-YR. STORM EMV,) MIN. 2.0 0' MIN. 0.5' MIN. 1.0' 67 C.Y./ AC. ,(....:.. DRY _ STORAGE RISER CREST 67 C.Y./ AC. WET STORAGE DEWATERING Tx Pi: SPACE m: SEDIMENT CLEANOUT POINT DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) PLATE. 3.14-2 PLATE. 3.21 FLUME PIPE CROSSING B MEA41RE5 _MBE UN101D $LAN APPRMCH AiF.IS I MMFR f10• ` FLUME PIPE y DtCM1FD ,A•NCII B NjIRB .S EEE AREAS I PLAN VIEW SECTION "A -A" SECTION LLB-B' 3.07 1✓1�. 7 1� n O Z UO '^ - Q m D- N Nm W N N In O� >oq OQ uWi LLin w 0 _J Z_ Z� _j L`'D Co fr O65 > C) C0 V ZWLl1 0 wC0 0Z 000 i fnQCL o LU 0) U Q 04 Z O LL Fr U GO W 0 z O GO W ILE Q 0 O Z DRAFTER: SML DESIGNER: I CCM PRODUCTION ZOD z OJ U) Q `�� // V ) W 0 z m Q z O U) � U U z J °6 - O C) �>LLJ N z W o - W 0 mIM 1Ir W LLJ DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: V OF 22 Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites ESTABLISHMENT OF VEGETATIVE COVER Developing a fertile soil is a crucial step in the establishment of vegetation, which can reduce the amount of fertilizer required to maintain good vegetative cover. A fertile soil has the capacity to supply the nutritional needs of the plants being established. Good soil quality characteristics include good soil texture, adequate nutrients available for plant growth, good moisture holding capacity, and the appropriate soil acidity/alkalinity balance (pH). The following is a discussion of the steps needed to ensure good vegetative growth. 1. Soil Tests Soil tests are extremely important and should be conducted on every site. Soil tests provide specific information on the amounts of phosphorus, potassium, calcium and magnesium available for plant uptake and recommends additional amounts as required. Soil tests are crucial for determining the amount of lime needed to obtain an appropriate soil pH for the vegetation being established. Soil test results include recommendations specific to the site and vegetation being grown. Soil tests recommend the amount of plant nutrients and lime needed to promote and maintain good plant growth. Soil tests may be performed by the Cooperative Extension Service Soil Testing Laboratory at VPI & SU, or by a reputable commercial laboratory. Also note that County Extension offices have soil testing supplies and information. Soil tests are not used to determine nitrogen needs. Nitrogen is applied based upon established requirements for the plant to be grown, season of growth, and intended use. 2. Surface Roughening Provide a rough soil surface by stair -step grading, grooving, or tracking the soil to be vegetated or by leaving slopes in a roughened condition by not fine -grading, in accordance with the 1992 Virginia Erosion & Sediment Control Handbook (Std & Spec 3.29). Seed germination is difficult with compacted soils. Rough, loose soil surfaces helps prevent the loss of lime and fertilizer due to runoff, increases water infiltration, and provides seed coverage, which aids in seed germination. 3. Soil Amendments & Soil Quality Materials such as sand, vermiculite, peat, and compost may be added to soil to modify texture, improve structure and increase the moisture holding capacity. It is also recommended to conserve existing soil quality by preserving and reapplying topsoil in accordance with the 1992 Virginia Erosion & Sediment Control Handbook (Std & Spec 3.30). Areas that have been compacted, or where duff or underlying topsoil is removed, should be amended with compost to improve soil quality. 4. Lime Adjusting the soil pH between 6.25 to 6.5 is extremely important for grass establishment, especially in the acidic soils of Virginia. A soil test is necessary to determine the actual amount of lime required to adjust the soil pH of denuded sites. However, when a soil test has not been performed, apply 2-tons/acre (90 pounds per 1,000 square feet) of pulverized agricultural grade limestone. Revised 7/17/03 Page 2 of 8 Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites 5. Fertilizer Never aDDly more than 1 Dound of water soluble nitrogen Der 1.000 sauare feet within a 30 day en riod. Nitrogen should be applied based upon established requirements of the plant to be grown, season of growth, and intended use. Establishing a uniform dense vegetative cover with a good root system reduces the potential for pollution by decreasing erosion and runoff, increasing the plants ability for nutrient uptake, and reducing pesticide use. A detailed discussion on fertilizer use is provided in the `Updated Fertilizer Specifications and Rates for Establishment' section of this bulletin. 6. Incorporation Incorporate the lime and fertilizer into the top 4 - 6 inches of the soil by discing or by other means. Incorporation reduces the potential nutrient loss due to runoff, as well as significantly increasing the success of establishing a vegetative cover. When surface roughening does not occur prior to the application of lime and fertilizer, `mix' the lime and fertilizer into the soil, at least 4 inches, by the methods described in the 1992 Virginia Erosion and Sediment Control Handbook (Std & Spec 3.29). When incorporation does not occur, and fertilizer and lime is applied directly to a smooth surface, the phosphorus (P205) application rate must be reduced by half because of the limited contact area with soil and the risk of nutrients being lost in runoff. 7. Seeding Selection of plants is based on climate, topography, soils, land use and the planting season. The 1992 Virginia Erosion and Sediment Control Handbook vegetative cover standards and 8 g specifications 3.31 Temporary Seeding, 3.32 Permanent Seeding, 3.33 Sodding, and 3.34 Bermudagrass & Zoysiagrass, describe in detail the specifications for plant selection. In addition, attached are one -page updates to the vegetative cover standards and specifications, which provide updated fertilizer and lime rates and the seeding schedules for the different physiographic regions of Virginia. 8. Mulching The application of mulch to the soil surface for both temporary and permanent seeding, is one of , PP P �'Y P g the most effective means of controlling runoff and erosion on disturbed land. All permanent seeding must be mulched immediately upon completion of seed application. It is especially important to mulch liberally in mid -summer and prior to winter. Mulching prevents erosion, and thereby pollution, by protecting the soil surface and fostering the growth of vegetation by increasing the moisture content and providing insulation from extreme temperatures. The 1992 Virginia Erosion and Sediment Control Handbook (Std & Spec 3.35) details the mulch specifications and includes a list of the typical materials used to mulch (for example straw, wood chips, and fiber mulch). Revised 7/17/03 Page 3 of 8 Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites 9. Hydroseeding Hydroseeding is a mechanical method of applying seed, fertilizer, and mulch to land development sites in one step. This method is efficient in providing an immediate cover to denuded sites; however, the surface must be carefully_ prepared in order for successful seed germination. Hydroseed on rough, loose surfaces only. Roughen the surface prior to application of hydroseeding, per the specification above and in accordance with the 1992 Virginia Erosion & Sediment Control Handbook (Std & Spec 3.29). Although proper soil pH is crucial in establishing good vegetative cover, lime is usually not included in the hydroseed mix. Therefore, lime should be incorporated into the soil as needed when preparing the site for hydroseeding. To avoid poor seed germination as a result of seed damage during hydroseeding, it is recommended that if the machinery breaks down from 30 minutes to 2 hours, 50% more seed must be added to the tank. Beyond 2 hours, a full rate of new seed is usually necessary. UPDATED FERTILIZER SPECIFICATIONS AND RATES FOR ESTABLISHMENT Plant nutrients should be applied based upon established requirements of the plant to be grown, season of growth, and intended use, as specified in the 1992 Virginia Erosion and Sediment Control Handbook (Sid & Spec 3.31, 3.32, 3.33, and 3.34). The timing and rate of fertilizer application depends on the type of grass. There are basically two types of grasses, warm and cool season grasses. Warm season grasses (Bermuda, Zoysia) are those that go dormant in the winter. Cool season grasses (Fescue, Bluegrass) are those that stay green year round. 1. Recommended Season for Applying Nitrogen Fertilizers The earliest spring application of nitrogen for cool season grasses is six weeks prior to the last average frost date (for example, February 6 for Virginia Beach and March 1 for Roanoke). The latest fall application of nitrogen for cool season grasses is six weeks after the fast average frost date (for example, December 29 for Virginia Beach and December 1 for Roanoke). The earliest spring application of nitrogen for warm season grasses is the last average frost date for the region (for example, March 20 for Virginia Beach and April 15 for Roanoke). The latest fall application of nitrogen for warm season grasses is 30 days prior to the average first frost date for the region (for example, October 15 for Virginia Beach and September 20 for Roanoke). 2. Per Application Rates Phosphorus (P) and potassium (K) fertilizer requirements should be determined by a soil test. Never apply more than one (1) 12ound of water soluble nitrogen per 1,000 square feet within a 30 day period. The following table itemizes the fertilization rate revisions to standards and specifications 3.31 Temporary Seeding, 3.32 Permanent Seeding, 3.33 Sodding, and 3.34 Bermudagrass & Zoysiagrass Establishment. Revised 7/17/03 Page 4 of 8 Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites Summary of Fertilizer Snecification Revisions for Establishment of Turf 2003 Urban Nutrient Management Technical Standards & Specifications Bulletin 3.31 Temporary Seeding 10-10-10 fertilizer applied at a rate of 450 lbs. / acre or 10 lbs. / 1,000 ft2 Mixed Grasses & Legumes 10-20-10 fertilizer applied at a rate of 500 lbs. / acre or 12 lbs. / 1,000 ft2 Legume stands only Apply the equivalent of 100 lbs. of phosphate (P205) and 100 lbs. of Potash (K20) per acre. 3.32 Permanent Seeding NO NITROGEN N Grass stands only 10-20-10 fertilizer applied at a rate of 500 lbs. / acre or 12 lbs. / 1,000 ft2 10-10-10 fertilizer applied at a rate of 450 lbs. / acre or 10 lbs. / 1,000 ft2. NOTE: For cool 3.33 Sodding season grasses apply fertilizer in fall or spring. For warm season grasses apply the fertilizer in late spring or summer only. 10-10-10 fertilizer applied at a rate of 500 lbs. / acre or 12 lbs. / 1,000 ft2. Apply additional 3.34 Bermudagrass & Zoysiagrass Establishment phosphorus and potassium 30-60 days later based on the soil test. Apply an additional equivalent of 1 Ib./1,000 ft�of nitrogen when the P & K are applied. 3. Using Fertilizer Analysis to Calculate Nitrogen Rates All fertilizer packages have three numbers present on the package (for example, 10-10-10 or 16- 4-8). These three numbers indicate the percentage of nitrogen (N), phosphorus (P205), and potash (K20) present by weight which is called the N-P-K ratio. For example, a 20 pound bag of 10-6-4 is 10 percent nitrogen (2 lb. of N), 6 percent phosphate (1.2 lb. of P205), and 4 percent potash (0.8 lb. of K20) the remaining is inert material to facilitate even application of fertilizer. The Virginia nutrient management recommendation is to apply no more than 1 lb. of nitrogen per 1,000 square feet within a 30 day period. A fertilization rate of 1 lb. of nitrogen per 1,000 square feet can be obtained for any site by using the fertilizer analyses on the bag and knowing the area of application. Revised 7/17/03 Page 5 of 8 Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites Fertilizer Bag Reads: Amount to Fertilizer to Apply 1 lb. of nitrogen / 1000 sq.ft. 6-2-0 16.6 lb. 10-10-10 10 lb. 16-4-8 6.2 lb. 20-5-5 5 lb. 22-3-14 4.5 lb. 29-3-7 3.4 lb. 4. Use of Slowly Available Forms of Nitrogen Fertilizer bags will state the source or category from which the nitrogen is derived. Nitrogen fertilizers have two categories: Water Soluble Nitro en i.e. all nitrogen is immediate) g g ( g Y available); and Slowly Available Nitrogen (i.e., nitrogen is available over an extended period of time). The nitrogen source impacts how grass is fertilized and the rate and timing of application of fertilizer. Choose a fertilizer that has some amount of Slowly Available Nitrogen (SAN). Slowly available nitrogen fertilizers make nitrogen available a little at a time, the way most grasses need it, which reduces both the potential of excess nutrients in runoff and the leaching potential of excess nutrients into groundwater. Sources of SAN are usually stated on the label. It may be stated as % Water Insoluble Nitrogen (WIN), sulfur -coated urea, natural organic nitrogen or other controlled release materials used to coat the fertilizer. The % WIN is usually stated on the fertilizer container, if the % WIN is not listed, assume that all the nitrogen in the fertilizer is water soluble and immediately available. As a general guideline, if the fertilizer has 50% WIN or less, it should be applied in the same manner as readily available nitrogen. If the fertilizer is 50% WIN or greater, it should be applied as a SAN. UPDATED FERTILIZER SPECIFICATIONS AND RATES FOR MANAGEMENT 1. Application of Fertilizer for Maintenance Apply fertilizer when grass is actively growing and can utilize the nutrients. Summer is best for warm season grasses (zoysiagrass and bermudagrass) while the fall months are best for cool season grasses (tall fescue, Kentucky bluegrass, perennial ryegrass). 2. Annual Application Rates A. When applying 100% Water Soluble Nitrogen sources (those that have all the nitrogen immediately available for plant use), the following rates apply: . Never aDDly more than one (1) pound of water soluble nitrogen Der 1.000 sauare feet within a 30 day period . No more than 3.5 lbs. of nitrogen per 1,000 square feet annually on cool season grass. . No more than 4.0 lbs. of nitrogen per 1,000 square feet annually on warm season grass. Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites B. When applying slowly available nitrogen (SAN, WIN, sulfur -coated urea, natural organic nitrogen or other controlled release materials), total annual nitrogen application rates may be adjusted incrementally by referring to the following figure. The maximum annual nirogen rates when using 50% or greater SAN is as follows: . No more than 5.0 lbs. of nitrogen per 1,000 square feet annually on cool season grass. . No more than 5.5 lbs. of nitrogen per 1,000 square feet annually on warm season grass. Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites C. When aDvlving maintenance fertilizer on established sod. Pounds of nitrogen 1 ier 1,000 sq. ft. if the fertilizer is less than 50 percent WIN Month Type of Grass Tall Fescue Perennial R e Kentucky Bluegrass Bermuda rass Zoysiagrass September 1 1 0 0 October 1 1 0 0 Early November 0 0 0 0 April 0 0 0 0 May 0-0.5 0-0.05 1 1 June 0 0 1 0 July/August 0 0 0 1 Yearly Lbs. N/1000 sf 2.5 2.5 2 2 Pounds of nitrogen per 1,000 sq. ft. if the fertilizer is more than 50 percent WIN Month Type of Grass Tall Fescue Perennial Rye Kentucky Bluegrass Bermudagrass Zoysiagrass August 15 1.5 1.5 0 0 October 1 1.5 1.5 0 0 April 0 0 1.5 1.5 May 15 0 0 0 0 June 0 1 0 1.5 1.5 Year) Lbs. N/1000 sfJ 3 1 3 1 3 1 3 FLOW CHANNEL STABILIZATION GRADE 0.5% MIN. 10% MAX. 1. Seed and cover with straw mulch. 2. Seed and cover with Erosion Control Matting or line with sod. 3. 4"-7" stone or recycled concrete equivalent pressed into soil in a minimum 7" layer. Construction Specifications 1. All temporary swales shall have uninterrupted positive grade to an outlet. Spot elevations may be necessary for grades less than 1 %. 2. Runoff diverted from a disturbed area shall be conveyed to a sediment trapping device. 3. Runoff diverted from an undisturbed area shall outlet directly into an undisturbed stabilized area at a non -erosive velocity. 4. All trees, brush, stumps, obstructions, and other objectionable material shall be removed and disposed of so as not to interfere with the proper functioning of the swale. 5. The swale shall be excavated or shaped to line, grade and cross section as required to meet the criteria specified herein and be free of bank projections or other irregularities which will impede normal flow. 6. Fill, if necessary, shall be compacted by earth moving equipment. 7. All earth removed and not needed for construction shall be placed so that it will not interfere with the functioning of the swale. 8. Inspection and maintenance must be provided periodically and after each rain event. Erosion & Sediment Control Technical Bulletin No. 4 Nutrient Management for Development Sites C. When aDvlving maintenance fertilizer on established sod, Pounds of nitrogen per 1,000 sq. ft. if the fertilizer is less than 50 percent WIN Month Type of Grass Tall Fescue Perennial Rye Kentucky Bluegrass Bermuda as Zoysiagrass September 1 1 0 0 October 1 1 0 0 Early November 0 0 0 0 April 0 0 0 0 May 0-0.5 0-0.05 1 1 June 0 0 1 0 July/August 0 0 0 1 Yearly Lbs. N/1000 sf 2.5 2.5 12 2 Pounds of nitrogen per 1,000 sq. ft. if the fertilizer is more than 50 percent WIN Month Type of Grass Tall Fescue Perennial Rye Kentucky Bluegrass Bermudagrass Zoysiagrass August 15 1.5 1.5 0 0 October 1 1.5 1.5 0 0 April 0 0 1.5 1.5 Ma 15 0 0 0 0 June 0 1 0 1 1.5 1 1.5 IYearly Lbs. N/1000 sfl 3 1 3 1 3 1 3 TABLE 3.31-13 (Revised June 2003) TEMPORARY SEEDING SPECIFICATIONS QUICK REFERENCE FOR ALL REGIONS SEED APPLICATION DATES SPECIES APPLICATION RATES Sept. 1 -Feb. 15 50/50 Mix of Annual Ryegrass (lolium multi- florum) & Cereal (Winter) Rye (Secale cereale) 50 -100 (lbs/acre) Feb. 16 - Apr. 30 Annual Ryegrass (lolium multi-florum) 60 - 100 (lbs/acre) May 1 -Aug. 31 lGerman Millet 50 (lbs/acre) FERTILIZER & LIME • Apply 10-10-10 fertilizer at a rate of 450 lbs. / acre (or 10 lbs. / 1,000 sq. ft.) • Apply Pulverized Agricultural Limestone at a rate of 2 tons/acre (or 90 lbs. / 1,000 sq. ft.) 1 - A soil test is necessary to determine the actual amount of lime required to adjust the soil pH of site. 2 - Incorporate the lime and fertilizer into the top 4 - 6 inches of the soil by disking or by other means. 3 - When applying Slowly Available Nitrogen, use rates available in Erosion & Sediment Control Techr # 4. 2003 Nutrient Management for Development Sites at http://www.dcr.state.va.ustsw/e&s.htm#pubs TABLE 3.32-C (Revised June 2003) PERMANENT SEEDING SPECIFICATIONS FOR APPALACHIANIMOUNTAIN AREA SEED' LAND USE SPECIES APPLICATION RATES Tall Fescue' 90-100% Minimum Care Lawn Perennial Ryegrass2 0-10% (Commercial or Residential) Kentucky Bluegrass' 0-10% TOTAL: 200-250 lbs. Minimum of three (3) up to five (5) varieties High -Maintenance Lawn of Kentucky Bluegrass from approved list TOTAL: 125 lbs. for use in Vir inia' Tall Fescue' 128 lbs. General Slope (3:1 or less) Red Top Grass or Creeping Red Fescue Seasonal Nurse Crop3 2 lbs. 20 lbs. TOTAL: 150 lbs. Tall Fescue' 108 lbs. Low -Maintenance Slope Red Top Grass or Creeping Red Fescue Seasonal Nurse Crop3 2 lbs. 20 lbs. (Steeper than 3:1) Crownvetch" 20 lbs. TOTAL: 150 lbs. 1 - When selecting varieties of turfgrass, use the Virginia Crop Improvement Association (VCIA) recommended turfgrass variety list. Quality seed will bear a label indicating that they are approved by VCIA. A current turfgrass variety list is available at the local County Extension office or through VCIA at 804-746-4884 or at htto://sudan.cses.vt.edu/htmi/Turf/turf/publications/publicafons2.htmi 2 - Perennial Ryegrass will germinate faster and at lower soil temperatures than Tall Fescues, thereby providing cover and erosion resistance for seedbed. 3 - Use seasonal nurse crop in accordance with seeding dates as stated below: March, April - May 1 e ......................... Annual Rye May 16'h - August 1 e ......................... Foxtail Millet August le - September, October ........... Annual Rye November - February ............................. Winter Rye 4 - All legume seed must be properly inoculated. If Flatpea is used, increase to 30lbs/acre. If Weeping Lovegrass is used, include in any slope or low maintenance mixture during warmer seeding periods, increase to 30 -40 lbs/acre. FERTILIZER & LIME • Apply 10-20-10 fertilizer at a rate of 500 lbs. / acre (or 12 lbs. / 1,000 sq. ft.) • Apply Pulverized Agricultural Limestone at a rate of 2 tons/acre (or 90 lbs. / 1,000 sq. ft.) - A soil test is necessary to determine the actual amount of lime required to adjust the soil pH of site. - Incorporate the lime and fertilizer into the top 4 - 6 inches of the soil by disking or by other means. - When applying Slowly Available Nitrogen, use rates available in Erosion & Sediment Control Technil # 4. 2003 Nutrient Management for Development Sites at http://www.dcr.state.va.us/sw/e&s.htm#Dubs zU F--�i 0 GO Z f4 O Q m N y a= w N m Old � UU Pol. 0 OU >o0 U Li n L ¢ mwn w J Z J r, 0 zFD �>A-`0 V m pUv 0 j OZww o z Co L Z Lu LLw90 p> mQo- o Lu rn U m ¢ Wtr ��o���PyTH Op Df �� U C A O 9 Christopher C. Mulligan Lic. No. 09/07/22 w4� O1 E%10NAL E�Gl} z �0 V) LLI O - z 0 z z m Q o �/� N VJ J J U) 120 Q J °� U� 06 N LLj W w mW U) I_r W z 0 I-_ U w 0 m z O w m m 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 9 OF 22 3�G ''-_-`,, I41 , 1 `�� 1 1.15Ac / 79 3e� , I I , I so I 5.2 Ac 80 i 41 3p ..\ 0 140 y 7 \ 1 0 100. I.- F (41/ 1 3 o TMP 80-56`` � , / 1 GOODE, TOBY L. OR JOAN P. \'.\ �� �♦, ' 1 �� i 1 DB 3356/PG 00309, I � 1 1 �>o �e � • • I WETLAND AREAS ♦ 1 I �, 1 r (PER W'GF) c It 1 TMP 80-56A 110 1 i 4 0000m m m m m DEVALL ROGER R. & DOROTHY V. DEVALLQ, I U LIVING TRUST , ALf. LIV 0 F DEV —�TRUSTEES \\ ' 8.82Ac _ DB 3264/PG 327 1 R a �, 78 I ��� �� 350 ` • I . 1 TMP 94-7B _ 10.8Ac 411 HAWKINS, LARRY R. , J 78 DB 900/PG 114 \ ; , BREEZY i ILL AT KESWICK LLC 1 DB 3982/PG 676 1 \ / , TMP 94-7 MILLS, AUDREY HEARNS ETAL TMP 94— HAWKINS, CLARENCE MA & BEATRICE , C/0 KARE,N ANDERSO.N 1 �� DB 689/F'G 515 ; DB 1365/PG 285 � 1 % \ ,, 1 04go ALbLIVIAHLt UUUIV I Y J I ttF' 00 - - 110 to- �, SLOPES OVERLAY -MANAGED 40� I • 40 ALBEMARLE COUNTY STEEP 20.5Ac / It , SLOPES OVERLAY -PRESERVED % / 79 1 i ` TMP 94-8F % / WASHIVTON, ALICE BOYD ALBEMARLE COUNTY STEEP CHARLE FLORE.NCE GRIF � SLOPES OVERLAY - CRITICAL % \ D�51821PG 256 of , WETLAND AREAS / \ It (LOCATED BY WILD GINGER FIELD 1 SERVICES DATED JANUARY, 2021) 20.6Ac PERIMETER STREAM AREAS I , 78 (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) INTERMITTENT STREAM AREAS 1 (LOCATED BY WILD GINGER FIELD %TMP 94- 1 1A SERVICES DATED JANUARY, 2021) 1 FORWARD, IHUGH REAL 100 YEAR FLOODPLAIN I PROPERTYTMP 94-8E IA A (PER COUNTY GIS) %APRIL 30, DBE 4371PGC498 1 \ 1?019 C/O r 1 %TRUSTEE 1 17.7Ac 1 78 1 1 % TMP 94-51 \ JAUA�EN //OR D 1 STEPHANIF_ LYNN 94-58 \ \ \ THOM SP TROY E OR 1 TMP 94-59 KRISTINA W i COLVIN, CAROL F 1 \ TMP 94-17 I GOODNIGHT, CYIITHIA J 1 1 �o TMP g4-8D JOHN L INDZINS MARY R K DZINS IHA TMP 94-48ABREEZY HILL AT KESWICK LLC DB 549/PG 364 /94-8CS, CLARENCE BEATRICE B. 403 , \ 1 CA£ 1 � 1 � t � � I 1 4f It 390 o� 1 1 ; 1 1 TMP 90-48 1 BREEZY HILL **T KESWICK LLC DB 5#?3/PG 364 I 1 , 1 � 1 � 1 � 1 7.61 Ac ~`TMP 94-47A 78 I 78 I I 1 I 1 1 1 I 1 1 1 I 1 1 1 1 1 1 1 1 31 1 1 i 1 1 1 1 /1 1 100 200 300 11 U i O Z I^ 0,00 V1 � N r W N m Do: N u> p U)>N O U U Q U7 W r � � Z r� z0>Ma O> z Li uz - z Lu a J S Q 5; U) w rn U I� U) J a W O$�PLTH 0p DI�� Christ C. M%� v Lic. No. � 09/07/22 w�v4 81ONAL oFESE�Gl$ z �O VJ \ / w 0 Q z Q mg ��n � o vJ Z U)LU W _ j W N o W w W M� W � z 0 a U U w 0 U Z O w rr cow Q 0 0 z DRAFTER: SML DESIGNER: CCM PRODUCTION: ZOD DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 10 OF 22 1.90 A o s I _- sso GOOD , 3BY L. OR P. TMP 80 / V1� 03 ' !� 0.35 T 35Q R60 0.10 �- ���• 860 -77 340 /00 0 �,. S O� WET(' J 1 - - \ o.ae o.50 oso 370 /'', A v5 �. TMP 80-�6A o.a5 0 as i 03s o.a5 a a5 o.ae _ 0.z --- DEVALL, ROGER R. & DORQT1iY V. DEl/AiL� \\ I t � � a35 — � TRUSTEES O"EIiALL LIVING TRUST 360� DB 3264/7G 327 350.. m 8.64Ac 02<3 0 70' s q O I �1 35 \ V HHwKINS LFR RY K.T,v,P 94-78 .2- AC - �. ,A - a w 65 \ v 4 ' r. 11 G / P os� B 900 o.3z _ D 4 79 _ 0.35 -1. i w i o A�- 7MPAT K 380 - 036 \ P M r \ 03 38R€€0 .5 O I \ 0 OD TMP 94-7 \ \ / TMP 94-7A MILL AUDREY HE^ARNS ETAl, \ \ HAWKINS, CLARENCE M. & BEATRICE C/0 KAREN ANDER ON \ D 689/PG 515 \` DB 1365/PG 28\ 1 0 ALBEMARLE COUNTY STEEP v SLOPES OVERLAY - MANAGED r i ALBEMARLE COUNTY STEEP SLOPES OVERLAY PRESERVED / i TMP 94-8F \ WASHINGTON, ALICE BOYD & ALBEMARLE COUNTY STEEP J CHARLE FLORENCE GRIF \` SLOPES OVERLAY - CRITICAL / D 182/PG 2561 ®WETLAND AREAS (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) � \ i PERIMETER STREAM AREAS \ \ (LOCATED BY WILD GINGER FIELD SERVICES DATED JANUARY, 2021) � 8.11. INTERMITTENT STREAM AREAS (LOCATED BY WILD GINGER FIELD TMP 94-1 \ SERVICES DATED JANUARY, 2021) FORWARD, HUGH REAL PROPERTY TMP 94-sE A\ 100 YEAR FLOODPLAIN TRUST U/A/D EWERS, 'PATRICIA A (PER COUNTY GIS) APRIL 3Q DB 1437/PG 498 2019 CIO TRUSTEE TMP 94-58 THOMAS, TROY E OR TMP 94-59 KRISTINA W i COLVIN, CAROL F / i TMP 94-57 GOODNIGHT,- _CYNTHIA J TMP 94-51 \ JUMPER, EDWARD \ ALLEN 111 OR STEPHAN/F_ LYNN , TMP 94-46A3 s1 ' 5.92Ac 82 6 5 033 \ 0.35 036 0.35 nn � o.zz I i 0 I� 6.9 A 85 6.22) TM�\94-48A BREEZY HILL AT KESWICK LLC 80 t DB 5491'PG 364 — TMP 94-SD � JOHN L. 4UNDZINS MARY R kNZINS _ _ 1 TMP 94-8C HAtKINS, CLARENCE —_ M. OR BE,4TR/CE B. - -- - - Djojj}fPG 40&m� 00000 1.OAc. CULV. / -�� TMP 4-49C / TMP 98, 10 0 SCALE: 1"=10( 1A OA �1 TMP 94 8 BREEZY HILL AT KE`5'WICK LLC DB 5493/PG 3�4 \ 8.90A 80 V-- TMP 94 47A TMP 94-47 100 2 300 U U O GO Z p (o Q m N N m y LJ p p 0 -- "0 "o vd>o 80 Q Ld In a, -j w J Z_ 4 65 � Z W w o V L or z Luz L z p � Lug= Lu (/) o co U rnco Q O/ W DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD �o sPyTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSI ONAL E�Gl} z W �O V J \ W � z Q z cc Q Q �a_ 0 V) �.J z J U) W J 0 O Lp N W oW W M� W DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 11 OF 22 (PER COUNTY GIS) PROPOSED DITC 00 PROPOSED DITC >' 2.8AC X C SECTION SECTION / MIN, DEPTH=a" E.L.S. MIN. DEPTH=6" / I� O / \� \ , •_- ROPOSTD DITC iO POAS �c POA3A o SEC ION n JUTE LININGMIN. DEPTH-6^C Ss LINT PROP SED DIT _ `� o+oo To z oo ECTIONQO j,o ROPOSED DIT +3o io t+so PROPOSED DIP SECTION 1' BERM TOP SECTION' -Y Y B M OP IN. DEPTH=8' _ ' N GRASI LINING — �S k N DEPTH 6" ` MIN DEPTH 8v PR SECT 0 DI C O 1' BERM To POSED DRC R SE�ON HC _zy O A' tit ^ ` r Mi�oEPr N 2+o4siol+zs ��y)^ PROPOSED DITCN.-eEeTH 6lo x 1' BER TO \ MIN. DEPTH=8' .�� - 36p .7 1+B5ETOLIN2 0 SECTION � 0+00 TO 1++30 �� I \ / --- $_ �� v + MIN. DEPTH=B" .-- •i 4_J " JU , PROPO - p' 1' BERM TO \ TOP 1 GRASS �z§ ._.I �� O 2X00 26. Ac °J ti,I0+ TO 1TOP r^l I ;5 RO 3�P 3+25 TO 5+10 \ +60 LI NO V �a ' 1' B P. i O PO 1+1 TO LL r - oo zA + PROPOSED DITC p+00 �O s+ 1 �' SECTION +00 4j I MIN. DEPTH-6 _� � O 2+00 � O s cRAsS.AO \ PROPESED DITC 6 �w / S IT MIN. DEPT -i' -- % I 041< 4.86Ac — 34 1 + s CTION i .DEPTH=B o / I t ROSETDITC3 CIO \\ JUTE LINT RASSYINING `� 00 — MIN: DEPTH=6" I O / sso TMP 80-56A1 •., , � � _ 3+0o Ta ��� Q, pppDE, TOBY L. OR JOAN P.`�• 360 _ _ + cRA LINED DB 3356/PG 003 3 i -- 0+00 TO O+`..� 3 idb r BERM •- i 7 xo,\ �C PROPO ED DT� + _ A GO 5.1Ac �� �� \350 SECTION WET! FAQ POA6 - --- MIN. DEPrH� ` PE WG PRO SECTION DITC \ \ , I� '�� , , 1/ I I MIN. DEPTH- 12" TMP 80-56A I p 0y 00 0 �� \ ' 370 '> N �� + o r / DEVALL, ROGER R. & DOROTHY V. DEVALLr, X„ ' �- \ O o+sosroLl3+po' o TRUSTEES OF�EVALL LIVING TRUST . \ 3+00 4+00 1' BERM TOP BD RASS LINING - 60 3 91 TO 6+60 DB 326¢/PG 327 5+00 - 6+00 7 _ / RO 3 - 1' BERM roP A. PROPOSED SIN ITC L e V 00 88 908 I 8 64 o MINS D P Ho 70 _ o MIN. DEPTH=8" PROPOSED C D7 + r SEC �ROPOSF� R o R POSED DITC � y ' MIN. D TH=e" SEC IIIION PROPOSED DITC SEC O o SECTION a' TMP 94 7B = R HAWKINS, LARRY R• MIN. DEPTH=8" SECTION MIN. DEPTH=B" 3$p EC-3, TY , 2 AC � + D C-3, TYPE A .; MIN. DEPTH=B" IN. EPi�H6" P SE ON ITC 1� � // 1+"so To o+so DB--9004PG 114 ` �V - _ __ 1' B TOP 2+70 TO E 50 / JUTE LINING � AJUTE LINED O O O /��,, 1' BER TOP - G TED RIP -RAP I'� �� MIN. DEPTH=6" y __ ___ --_ _ \ 3,J 1' BERM T 4+50 TO 6+00 GRASS LINING ° 3+00 TO 3+33 O TMP -' 38D , 3+ 1 - O.P. ® WSE / EC-3, TYPE 5 LINING G �, 1' BERM TOP 61 0 BERM TOP I O 1' BERM T00 Eq 8 AT P 1' BERM TOP MIN. DEPTH pqB" w0 � I � I'' k� / / � 4+00 TO 5+25 I \ PRO SECTION ITC a � - -- O o - R or�1T0 5.92Ac s� GRASS LIN \ +so To 2+70 �, I TMP 94-7 g \ ' _ _ / \ \ BERM TOP TMP 94-7A MILLS, AUDREY HEARNS ETAI 3k MIN' E 55A - _ RACE C/ KAREN ANDERSON k R 82 \ HAWKINS, CL.pRENCE M. &BEAT _ � C \ \ D9 689/PG 515 \` DB�1365/PG 285 0� i \ / JUTE LINING POA4 � 390 �� i � I PROPOSED o SECTION ', A l •- \ (/A \ J MIN. DEPTH-12" w0 O O 3 �00 GRASS LINING ... A O CODO1' BE M TIP k � � 1 0 1190 - wwwwo a PROP SE - _ SEC _ PROPOSED D C o MIN. DEPTH S oo \ o .I r TMP 94-SF - ^� N, PROPOSED DITC WASHINGTON, ALICE BOYD & % SECTION GRASS a �INc _ �O j / \ CHARLE FLORENCE GRIF - c s uNINc O BERM _ o+oo To +oo r OP I D 1821PG 256 _ IN. DEPTH-B' O 0+7 ALBEMARLE COUNTY STEEP / 1X SLOPES OVERLAY - MANAGED / \ O 0 0+75 oETONI+ I III I TI III I 1'B TP I ALBEMARLE COUNTY STEEP V _ o �� 350 / 6 SLOPES OVERLAY -PRESERVED I ALBEMARLE COUNTY STEEP v 0 8.11Ac. 0 _ SLOPES OVERLAY -CRITICAL � A 0 wo 4 WETLAND AREAS TMP 94-1 1A I LOCATED BY WILD GINGER FIELD FORWARD, ��00 _ p 410 � � � ' O SERVICES DATED JANUARY, 2021) HUGH REAL `p� - PROPERTY TMP 94-8E \ TRUST U/A/D \ EWERS, PATRICIA A / 9e -- PERIMETER STREAM AREAS APRIL 30, DB 1437/Pc 498 (LOCATED BY WILD GINGER FIELD \ _ / \ � IO SERVICES DATED JANUARY, 2021) 2019 TRUSTEE o IMP 94-48 INTERMITTENT STREAM AREAS BREEZY HILL AT KESWICK LLC \ (LOCATED BY WILD GINGER FIELD �� p i DB 5493/ PG 34 I SERVICES DATED JANUARY, 2021) � ` \ 4r0 I I 100 YEAR FLOODPLAIN (PER COUNTY GIS) 6.1 AC. p \ 00 TMP 94-51 OS � �°vb JUMPER, EDWARD �- \ ALLEN Ill OR ` \ 6.22Ac STEPHANIE LYNN , HILL AT 48A \ / BREEZY HILL �T�.,K�ESWICK LLC — $O / 8.90Ac \� DB 54S/PG 364 � I TMP 94-58 \ - TMP 9CLAR $o CE THOMAS, TROY E OR `_ HAWKINS, ATRICE B. —_ — TMP 94-59 KR/STINA W \ - M. ` OR BEArRICE B. — - \ / _ D G 4Oi1 I 4 SD TMP 9 F TMP 94 5 7 \ _ COLVIN, CAROL — GOODNIGHT, CYNTHIA J JOHN L NDZINS - MARY R DZINS � I � 1.OAc. 1 _ / l CULV. TMP 94 47A "ftftft`� TMP 94-49C / / � TMP 94-47 � I — — TMP _ FLYNN; MARTIN R OR JODI� TMP 94-46A3 \ \ 11 100 200 300 F--I O GO z Q (O '^ Q m N N m W N O � > o q OQ uWi uin w J Z_ Z co � -00 r O > 0 Z W W 0 0 V LLzLu z Q5; W9= cnQd co dco rnU Q W Z O d Fr U Tn W z O W EO Lu Q O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZQD PyTH Op Df Christopher C, Mulligan No. 09/07/22 w4� OFESSI ONAL E�Gl} z � �O V J Q _J � � m z U W J n J v) 3: LL U) ~ J 06 O W N W mW CE co W DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 1 OF 22 I� 1 ►1 I I I I I I I I I I I I I I I I, o� fI I DAM BREAK- g \ �- INUNDATION ZONE I ) I I I , -� \� Pu V _ _ -- i �o o II yy I� BY-PASS STRUCTURE \ \ 60" RCP RISER w/A ti-Vortex \ _ \\' 6 I M.H. TOP = 347.57 M.H. TOP = 356.50 - 60" RCP RISER w/Anti-Vortex r I I I► ) \ \ 1 \ INV(12" OUT) = 331.00 INV(24" OUT) 350.00 _ _m -__ _ - - — _ — M.H. TOP 356.50 _ / �, A� �_ INV 36" ORIFACE OUT) = 340.20 _ - - - � _ y B FERREAM \�� -� - _ ` �`�INV(24" OUT) = 350.00 0 --- \ 12+00 '` - I \ � � f P o0 DIRT R R -0'� j�- 'PVC @ i mi Pocket Pok (C U.'s) OQ 21+24— .18 25CYCLRIPRAPw/ 142E UaUNDERLYING FILTER FABRIC 19+00 -- I SEE OUTLET PROTECTION#1 gDETAILS ON SHEETS 20-22 y / ENGINEERED LEVEL SPREADER #1 1 � w �'- `� � - - - 10 �` +� . i / V ( 0 EXISTING DAM SECTION 00 R = 92.8', L = 68' / {� - -'� CONSULT W/ GEOTECH TO UTILIZE, >ss, 71 ( O 1 5.0 cfs / _ 24" HDPE II j % REFURBISH &/OR RECONSTRUCT O 10 = 8.3 cfs 142D / (SEE RISER & BARREL DETAILS) I. SEE DETAIL SHEET 17 TOP ELEV. = 364.25 6 142B l DAM MIN. TOP WIDTH = 8' MIN.- .- �- 10+00 11+12+00 15H D 00 / i ---- EXISTING DAM SECTION i " P.E. - i � I � , / � CONSULT W/ GEOTECH TO UTILIZE, REFURBISH &/OR RECONSTRUCT (SEE RISER & BARREL DETAILS) 1 I _ TOP ELEV. = 360.85 DAM MIN. TOP WIDTH = 8' MIN. I4f Ilk Water -Tight Connections (HPDE Pipe - Manholes & Inlets): THE ADAPTER SHALL BE THE SOLE ELEMENT RELIED ON TO ASSURE A FLEXIBLE, WATERTIGHT SEAL OF THE PIPE TO THE FLEXIBLE CONNECTOR AND THROUGH THE CONNECTOR TO THE MANHOLE OR OTHER STRUCTURE. THE ADAPTER SHALL CONSIST OF A RUBBER GASKET WHICH FITS CLOSELY INTO THE CORRUGATION OF THE PIPE. THE RUBBER GASKET ELEMENT SHALL BE CONSTRUCTED SOLELY OF SYNTHETIC OR NATURAL RUBBER, AND SHALL MEET OR EXCEED THE REQUIREMENTS OF ASTM F 2510, ASTM C 1478, AND ASTM D 2321, SECTION 7.10 - MANHOLE CONNECTIONS. 375 370 365 360 355 350 345 340 335 330 325 320 315 310 305 ------ § r • a 11 •• 11 �. 0 50 100 150 T1 =50' TOP 337.36 . 11 • • . 11 • . 1 • • ' ------IN ------ ---� ---I� ---�� FILTER FABRIC; KEY 8-18" INTO MAX---� STONE DEPI -TOP 322.55 LENGTH = 1 �1 TYPICAL & POI �1�-_ DETAILS ON SHEET 18 _�_-_ _----�----------� ORIFACEram------------� INV• .1 1-I------------� -��- �SEE SALT -TREATED FOR • . 32211 ENGINEERED LEVEL SPREADER #1 L = 130'--------------� • 1 . DETAIL SHEET 18 �-TIMBERS �- --------------� �- --------------�SEE 10+00 11+00 12+00 13+00 14+00 15+00 16+00 STRM 142A - 142E PROFILE H:1 "=50'; V:1 "=10' 17+00 18+00 19+00 20+00 010 370 365 360 355 350 345 340 335 330 325 320 315 310 305 -300 21 +00 0 50 PROFILE SCALE x_' e� o, 0 W) Z O Q m N y � w N m o_U U V-j O U vJ. U ¢ w n w JZ �LL JD) � Z O > Zww O z w C7 LU ILL Z W J 2 O> rnfr o co w 0)U Wfr PyTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSIONAL E�Gl} z O V J 0 z r I I J J Q V ) J U) 0 J_ °6 _ co N W mW II..1�L� W LLOZ z O d U U w 0 z O w m 0 DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 130F 22 380 375 370 365 360 355 350 345 340 335 330 325 320 315 310 02 ■ t I✓ /%fir v 1 00 / CCti a / LQ rn li g k0 / 144A / ENGINEERED LEVEL SPREADER #2 r ' a I I I I I 14 R= 46.5, L= 43' J I I I 152 Q(1) = 6.5 cfs I Q(10) = 10.6 cfs 11 SEE DETAIL SHEET 17 I I I 146 o I I / 1'� / ✓ I I\ + a I II I I \ I \ �1 \ 10 YR BY-PASS Q(10) = 30.3 cfs 80 CY Cl, 1 RIP -RAP XO \ . w/UNDERLYNING F.F. 3:1 S-SLOPES, d=15" �100 -- __� 4+00 ' z l.l, \- c 1 \ q - �o Aw Water -Tight Connections (HPDE Pipe - Manholes & Inlets): THE ADAPTER SHALL BE THE SOLE ELEMENT RELIED ON TO ASSURE A FLEXIBLE, WATERTIGHT SEAL OF THE PIPE TO THE FLEXIBLE CONNECTOR AND THROUGH THE CONNECTOR TO THE MANHOLE OR OTHER STRUCTURE. THE ADAPTER SHALL CONSIST OF A RUBBER GASKET WHICH FITS CLOSELY INTO THE CORRUGATION OF THE PIPE. THE RUBBER GASKET ELEMENT SHALL BE CONSTRUCTED SOLELY OF SYNTHETIC OR NATURAL RUBBER, AND SHALL MEET OR EXCEED THE REQUIREMENTS OF ASTM F 2510. ASTM C 1478. AND ASTM D 2321. SECTION 7.10 - MANHOLE CONNECTIONS. 146 STA 10+00.00 TOP 328.99 INV IN 322.05 (147) INV IN 321.05 (145A) INV OUT 321.85 (145) i11iffiIl1 PE L STA 13+ TOP 3, PROPOSED I.00 (1 GRADE � EXISTING GRADE 11+00 12+00 13+00 STRM 146A - 146 PROFILE H:1"=501; V:1"=10' 380 385 375 380 370 375 365 370 360 365 355 360 350 355 345 350 340 345 335 340 330 335 325 330 320 325 315 320 310 315 "I 000E■---� ■ �-------- MENNEN WUNDERLYING —STA 11 +34.07=--- 1 FILTER FABRIC; 15+45.68 KEY 8" • 1 STA 14+08.41 ••• 361.64 NATURAL GROUND TOP 358.28 INV OUT 357.00 (15 ---■ •• .4 --000■0�0001—_--■ `■—_ •• INV IN �11� —_— 1 •---��ilObl•1�Ct.r1Ci1IfCS!. ��♦♦■- ��� ■� ��■� SALT-TREATEDINV OUT 320.45 (143A) -Ell PROPOSED ■-�J-r:�'�.l- TIMBERS FOR 1 146 GRADE • • 000010�00011- ■���■EE0��.1- 0000�E100000E10�00E�-0� 00001�E1- • • 1 11 EEE■EPEE■1— ; .. 100E■0�00011—TOP.000��I01:MEN 0EMm01- —100E■0�00■1— 1 000��"MmI—�-0�IIIMAE�= —1000010�00011— —■III .MEN 6�MINE INV IN 3211 0000E m0������i00■— —100E■0�00011— 0 A0 'A■0-- �00■— —100E■E�00■1— •—�■0E� ��— —100E■00100011-- �—�■0E0Eii—��- 000E■--��� 0000■ — 0000■ 0000■ EEEE■ 0000■ 0000■ 0000■ 0000■ 0000■ EMEEME 0000■ 0-100E■0�00■1--■--00It�I0��—�00■- 0000■ —100E■0�00■1— ' • ' . - ' ' - " ■--OI—�IIr�—�00■- 0000■ —100E■0�00■1— ■--I�—/.— a•IJin•�.i���- 00■— 0000■ . �I000■0�00■1� ■��►�����M�•6lONll 0000■ 0000■ . —100E■0�00■I— ■—�OI����—� —100E■0�00■1— ■--���--�--- 0000■ —100E■0�E0011— ■--/J00III—� - 15" H lP=@l' 41%-- 0000E —100E■0�00■I— ■-- /0000��-105' • • �00000■ •• �00000■---- 0000■--100E■0�00■I— ■— ENGINEERED SPREADER�00000■---- MAX. SPEC. LENGTH - 1 1 SEE TYPICAL • • • • # DETAILS :N SHEET ' 100E■E�00■I— ■— 100E■00100■I— ■— 100E■00100■I— ■-0I I000010000�---- 1000■00100■I— ■— ■� .��-000■ ���---- 000■00100■I— ♦ �000■00000■---- 1000■00100■I— EXISTING GRADE --- 100E■0�00■1— .— --- 100E■0�00■1- . 01 --- 1100E■00100■I— --- 11000■00100■I— ■ I------ 0000■--1100E■00100■I— ■ /------ 1100E■E0100■I--■—/I------ ENGINEERED 11000■ 0010�■I—�ii00000I/�------ 1100001E ■ 00011--!'■ 0000I/------- 1 11000■ 00100011—j�0■000I/—������ • 1100001E■0001100001��G010I/------- 11000■ 001000111•-- 0 01I/------- 11000010�00■7--_ 0/------- SEE DETAIL SHEET 18 11000■0010001��— lil �------- 0000E 00■:•::_ 1 �0���-------- 0000■_ RPA BUFFER ZONE110E■I �0■— —t�------ B SOIL TYPES—�—�— 0000■ ----- 0000■ • • GREATER THAN 50'�M■ _ _ HDPE @ 1.4 Y������� ------ MENE■ �0■i"sa:�el:�" MEEE■ ------ 0000■ • • ------- -16 - -------- 0000■ 14+00 15+00 10+00 11+00 12+00 13+00 14+00 STRM 152 - 144 PROFILE H:1 "=50'; V:1 "=10' 15+00 385 380 375 370 365 360 355 350 345 340 335 330 325 320 315 310 1 150 0 50 PROFILE SCALE F--i O GO O' con Q m � co,.)N w N N O�>o R U (Lou wn L w J Z_ Z � a � CO L 0, -0O F O� � � zww o V LL z 000E LLz O> wax rnfr a- Lu rnU Q x z O d tr U U) w 0 co z 0 co Lu tr m Lu Q 0 0 z DRAFTER: I SML DESIGNER: CCM PRODUCTION ZQD PyTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSIONAL z O U) z �0 W Q N J J >� Q � o J T_ y U) N W W CE W DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 140F 22 X _- --- L \ -- — ��-------/ 1�VI i \ �� SEE OUTLETPRO'TECTION I � �77 �\ vv / / S E OUTLET PROTECTION� . - -- �� __C \\ \ \�\ // �/ — DETAILS ON SHEETS 20-2217 X /1/ DETAILS ON SHEETS 20-22 ¢urr�ONO ROAD A 18+00 ■ ■ ■ i,� r■ i� i i \ . \ � /1 � � +002 21 \ \ 14 00 15 0 _ 1 +00 0 21 +0 oL — — 1 , /// /� �_ x r i l / i l DPE.4°NOp ' N.W.S.E. = 370.40 . _ 3H0�- __ 7 EXISTING DAM /Z / � a 4+00 -- CONSULT W GEOTECOH TO UTILIZE, 3%�3Ho �i REFURBISH &/OR RECONSTRUCT � � (SEE RISER BARREL -- - i -- i TOP ELEV.&373 50 L 11 /'x _� I ✓/ ///// / �/ _ ,. — - n" - f g �/ j _ . T—� \ // DAM MIN. TOP WIDTH = 8' MIN. �� J3 -ten —a"° ��° _ w 33H°� � 3 / / 15"HDPE /EMERGENCY SPILLWAY / _ , � � / / / �/ INVERT = 372.00;-- y L = 8', 3:1 SIDE SLOPES 1 \ / 30 CY CL1 RIP RAP w/UNDERLYING / /'I I I _ \ \ \ .� / / �i; �; � i ❑ \ I �� FILTER FABRIC; �� �X �� �' / s Water -Tight Connections (HPDE Pipe - Manholes & Inlets): THE ADAPTER SHALL BE THE SOLE ELEMENT RELIED ON TO ASSURE A FLEXIBLE, WATERTIGHT SEAL OF THE PIPE TO THE FLEXIBLE CONNECTOR AND THROUGH THE CONNECTOR TO THE MANHOLE OR OTHER STRUCTURE. THE ADAPTER SHALL CONSIST OF A RUBBER GASKET WHICH FITS CLOSELY INTO THE CORRUGATION OF THE PIPE. THE RUBBER GASKET ELEMENT SHALL BE CONSTRUCTED SOLELY OF SYNTHETIC OR NATURAL RUBBER, AND SHALL MEET OR EXCEED THE REQUIREMENTS OF ASTM F 2510, ASTM C 1478, AND ASTM D 2321, SECTION 7.10 - MANHOLE CONNECTIONS. 400 395 390 385 380 375 370 365 360 355 ,u_ 15" HDPE J' ®rm%m o KEYED INTO NATURAL GROUND / //�� // �� ✓ \ �c 1 \ / STONE DEPTH-18" f / \ �� mil _-- \ C7 /J l - ------- 0 RE -CONSTRUCT DAM SECTION STA 10+51.30 TO MIN. 8' TOP WIDTH AFTER TO SPECIFICATIONS Ill • ----- EXISTING DAM TO: BREACHED & RE -GRADED; CONTRACTOR • INSTALL RISER& BARREL TO SWM#4 SPECIFICATIONS —■--mil--- 100 TOP 358.16 INV IN 356.00 104 STA 10+82.98TOP • 360.65 INV OUT • : 0 pp --- • . T• • 0 40 -!� --- EXISTING EEEEEg��- GRADE -- -lam--- FILTER FABRIC; KEY 8" INTO NATURAL GROUND STONE DEPTH=18" -- -.-lam■ ----�1�/ �M�M�M- -.-lam■ 1 +00 2+00 3+00 STRM 196 - 100 PROFILE H:1 "=50'; V:1 "=10' 4+00 5+00 400 395 390 385 380 375 370 365 360 355 350 50 0 50 100 150 SCALE: 1 "=50' 10 0 1 0 50 PROFILE SCALE 0 GO z O L(CD) Q m N I',- u, N m old far zN N OU>o 0 U Li L cnwn w J Z J q) D V > z V 0 Oco > ZW w o LLZ O00Z 0 LuwJ O ; 0) 0_ w 0) A� Q 0IL PyTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSIONAL E�G l} z rO V J �0 z LJJ Q J J >� LL Q J l V l� 0 _ � N W mW 1r W z 0 U U w 0 U z O W m Q 0 0 z DRAFTER: SML DESIGNER: CCM PRODUCTION• ZOD DATE: 01 APR 22 SCALE: AS SHOWN JOB: 487 SUB: 2022-000 SHEET: 1 BEGIN DITCH C�➢ ZERO NSIT DEPTH; TRAION TO FULL DEPTH ® 0+25 395 395 0 390 390 385 385 395 395 380 = SECMON = 380 390 390 375 375 1 BER ED RIP- P WSE M N. DEPTH=12 385 385 370 - , — 370 380 380 365 BERM TOP 365 375 375 360 I a 360 370 355 0+00 1 +00 2+00 0+00 1 +00 2+00 3+00 4+00 5+00 6+00 DITCH 1 - POA-1 PROFILE DITCH 2 - POA-1 PROFILE H:1"=50'; V:1"=10' H:1"=50'; V:1"=10' 385 385 385 385 EGIN DITCH © ZERO PTH; TRANSITION TO ------ 380—ULL DEPTH © 0+25 380 380 380 375 375 375 NEPTH=6 375 SED ON 3�00 TO 1 85 370 370 370 370 DEP - MINo a. 365 CRASS / LINING 0+00 TO 2+ 0 GRAB L 365 365 1+ + 365 1' BERM T P 2+00 TO 3+25— NN_BERM TOP 360 201C MIN DER 360 360 ° 360 355 lu 355 355 355 350 350 350 350 345 345 345 345 340 340 340 MIN. VIEPi"=15 340 335 335 335 PC 2A 335 330 330 330 330 OUTLET -PROTECTION 0 18" G61— . P.ipRap 325 325 325 325 Fabric (See Detail) 320 320 320 320 315 315 0+00 1 +00 2+00 3+00 4+00 5+00 6+00 7+00 0+00 1 +00 2+00 3+00 4+00 5+00 DITCH 1 - POA-5 PROFILE DITCH 2 - POA-5 PROFILE H:1"=50'; V:1"=10' H:1"=50'; V:1"=10' 360 360 17N ATBEG DEPTH; TRANSMON To 380 380 355RE 355 375 375 350 350 350 350 370 370 345 345 345 345 365 365 340 340 340 340 DITCH SECTION EC-3, TYPE A LINING 335 335 335 335 360 360 GRASS LINING 355 355 330 330 330 34, 36 330 HDPE @ 2.7 1 Detaill) 350 wujt�,�Ilwm 350 325 325 325 325 10 0 TION 345 '14345 0+00 1 +00 2+00 320 0+00 1 +00 320 Fa tail) 340 50 0 50 100 15o DITCH 2 POA#3 PROFILE POA#3-BY-PASS PROFILE 0+00 1 +00 2+00 3+00 4+00 5+00 0 0 50 H:1 "-50'; V:1 "=10' H:1 "-50'; V:1 "=10' PROFILE SCALE SCALE: 1"=50' DITCH - POA-4 PROFILE H:1"=50'; V:1"=10' _li w-s✓rs-� �- 7RT.f�- __ •fT\3i_ii•:ZTtClYifi7tfi�i71��� �L►.1+����� , . ---lil��iiJ•itl•L•i7!•7�---- ��w�����i������a•urss�?'ram ur�� ��Ifi��� �!!9.Ii11AIlAl1���� AmmIERM -----III-- \fI� U O GO z 0 � Q m N y 0 w N rn "0 O U --"8 Go 0 O� >o0 0¢ uwiuin w z� `n>�-00 tr oWv , O> zww O z LLz0000 Luz w90 0 > (/) o w rn U CID W z 0 EL 0 U Lu w 0 Z 0 w m Lu 0 0 z yTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OFESSIONAL S'G z O UD z U) m Q w J LL VJ Er J U J 0 T 0 y � � N W W W DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: SCALE: ---- JOB: 487 SUB: 2022-000 SHEET: 170F 22 365 BEGIN DITCH 0 ZERO 360 DEPTH; TRANSITION TO FULL DEPTH @ 0+25 385 380 375 370 365 360 355 340 335 330 325 350 345 340 335 0+00 1 +00 2+00 DITCH 1 - POA-3 PROFILE H:1"=50'; V:1"=10' 3+00 385 380 375 370 365 360 355 350 0+00 1 +00 2+00 3+00 4+00 5+00 DITCH 2 - POA-6 PROFILE H:1 "=50'; V:1 "=10' DEPTH; TRANSITION TO FULL DEPTH @ 0+25 Detail GRASjL INE • •1 . r22 -:Fa �•� 0+00 1 +00 DITCH LOWER - POA-2 PROFILE H:1"=50'; V:1"=10' 365 OUTLET PROTECTION [18" CL. 1 RipRap 60 w/Underlying Filter Fabric (See Detail) 355 350 345 340 335 330 385 380 375 370 365 360 355 350 345 340 335 330 385 380 375 370 365 360 355 350 345 01 MIN, DEPTH=12" EC-3, TYPE A 0+00 1 +00 2+00 3+00 4+00 5+00 6+00 DITCH 1 - POA-2A PROFILE H:1"=50'; V:1"=10' 0+00 1 +00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 DITCH REAR - POA-6 PROFILE �� C : C� 1J:7�■-------- •1 --■aml�ua�raw�■-_--�E'ixNIP12�►----- .1 �------�-��E4I■.T.R:1�11T.�31Lt3i�- 1 11 11 11 11 11 H:1"=50'; V:1"=10' NOTE: 1. STRC 156 & 180. PROVIDE 1/2" STEEL PLATE IN MANHOLE FLOOR SINCE DIFFERENCE BETWEEN INV IN/OUT >4FT. 10 0 i 0 50 PROFILE SCALE 1 385 380 375 370 365 360 355 350 345 340 385 380 375 370 365 360 355 350 345 340 335 330 325 U O z 0 to Q m N y � w N m Old � UU wNu� 0 0m jo0 U (Lou If-L wn w J Z J � ' Z U a) � c1- '00 V m pmv , O> zww o Z LILO000 LLZ w9 0 j Q) o w rn U co a W ��o���PyTH Op Df �� Christopher C. Mulligan Li,. No. 09/07/22 ww� OFESSIONAL S'G z O U) 0 z U) m Q w J LL CE U) 11 J_ °6 _ O N W mW 1I__1�L� W z 0 IL U m w 0 m Z O w o= m w Q O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: SCALE: - JOB: 487 SUB: 2022-000 SHEET: 180F 22 425 164 420 TOP 402.30—� TOP 396.931 415 162 410 MEMO —158 MEN TOP 396.93 405 400TOP 192A FILTER FABRIC; 375.90 STA KEY 8" INTO 395 TOP 361.18 154 390Mll TOP 377.74 385 380 w/UNERLYING 375 FILTER FABRIQ KEY 6"MIN. INTO NATURAL GROUND 370 STONE DEPTH= 18" MINN 365 360 MEMO 355 10+00 11 +00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 20+00 STRM 164 - 192A PROFILE H:1'=50'; V:1"=10' 385 385 MEN 380 MEMO380 375MEMO 375 370 370 365 365 360 360 355'go 355 +58.25 TOP 375.31 350 350 345 345 340 340 10 335 335 NOTE: 330 330 1. STRC 156 & 180. PROVIDE 1/2" STEEL PLATE IN MANHOLE FLOOR SINCE DIFFERENCE BETWEEN INV IN/OUT >4FT. 0 0 50 325 325 PROFILE SCALE 320 50 0 50 100 150 14+00 15+00 16+00 17+00 18+00 19+00 20+00 SCALE: 1"=50' STRM 190 - 178A PROFILE H:1"=50'; V:1"=10' ■ -■■■1�-- -■I�'l'ilia■■■��■■I!•■■■ii--11■�■1■■■■■�--- 7:il.S'�■■1■■■■■■■■■■ ■■■■�-■■■■■■�■■■■1-■■■1�----■■-■■�■■■■■■f�iG-■■�■■�'l:7Qib'fll:l.l9Zn_ --- ----- • Ii■■�Ifl■■■■■■�� ■■■■� ■■■■1-■■■1�---■■■fit -■■1 . Y� --YYI�IIYYY■- • ----- --IYYYYY�YYY�� 1 _��------- -- --------------- -YYYY•Z�-YYYYYY/�----------- --------------- --------------- U 0 GO Z OLo Q m N y a- w N m UU wNu� 0 OU jo0 U Li n L cnwn �+ ZU V tr p U v O� ZwLLI O Z LLzO000 L Z w J 0- O > 0) o w rn U U Q Wtr $PyTH Op Christopher C. Mulligan Li,. No. 09/07/22 w4� OFESSIONAL E�Gl} z rO V ) 0 z c) m Q LLJ J rn V ) cn � J 0 0 co N W mW W Z O d U U w 0 z O w m w a 0 0 z DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: SCALE: - JOB: 487 SUB: 2022-000 SHEET: 19 OF 22 oP OUTLET PROTECTION SPECIFICATIONS 8.0 CY, CL I RIP -RAP o EYED 6" INTO NATURAL OP1 m o F 24" PIPE Q10 = 5.0 cfs GROUND 18" MIN. DEPTH W/ UNDERLYING F.F APRON LENGTH = 12.0' 3DO =6.0' LA = 12.0' W = DO + LA = 18.0' oP OUTLET PROTECTION SPECIFICATIONS .0 CY, CL I RIP -RAP ND _EYED 6" INTO NATURAL OP2 18" MIN. DEPTH W/ UNDERLYING F.F `� APRON LENGTH = 20' 3DO = 9.0' LA = 12.0' W = DO + LA = 18.0' F 24" PIPE Q10 = 6.5 cfs oP OUTLET PROTECTION SPECIFICATIONS v 8.0 CY, CL I RIP -RAP r CjKEYED 6" INTO NATURAL COUND MIN. DEPTH W/DERLYING F.F APRON LENGTH = 12.0' 3DO = 6.0' LA = 12' W=DO+LA=18' F 24" PIPE Q10 = 7.0 cfs oP OUTLET PROTECTION SPECIFICATIONS VA DCR STORMWATER DESIGN SPECIFICATION NO. 2 SHEET FLOW TO FILTER OR OPEN SPACE Sample Construction Inspection Checklist for Sheet Flow to Vegetated Filter Strip or Conserved Open Space: The following checklist provides a basic outline of the anticipated items for the construction inspection of sheet flow practices. Users of this information may wish to incorporate these items into a VSMP Authority Construction Checklist format consistent with the format used for erosion and sediment control and BMP construction inspections. Sheet Flow to Conserved Open Space Areas ❑ Pre -construction meeting with the contractor designated to install the sheet flow practice has been conducted. ❑ Impervious cover has been constructed/installed and area is free of construction equipment, vehicles, material storage, etc. ❑ All pervious areas of the contributing drainage areas have been adequately stabilized and erosion control measures have been removed. ❑ Area of the conserved open space has been clearly marked and protected from construction traffic with adequate signage and fencing, and is in good condition (undisturbed — other than for pruning or other vegetation management needs). ❑ Area of the conserved open space has been clearly marked and protected from construction runoff and sediment with appropriate sediment control measures (super silt fence, berms, etc.). ❑ Stormwater has been diverted for the construction of the inflow (level spreader or gravel diaphragm). ❑ Any light grading required to establish the upper boundary of the conserved open space has been performed with light equipment and minimal impact to the existing vegetation. ❑ Construction of engineered level spreader for concentrated inflow or a gravel diaphragm or other pretreatment measure for sheet flow has been completed and the area stabilized as needed. ❑ Stormwater runoff directed into conserved open space after the area at the upper boundary has been stabilized. ❑ All erosion and sediment control practices have been removed. ❑ Follow-up inspection and as -built survey/certification has been scheduled. ❑ GPS coordinates have been documented for all conserved open spaces on the parcel. 0 CY, CL I RIP -RAP KEYED 12" INTO 7 o ATURAL GROUND o F 24" PIPE Q10 = 18.0 cfs OP4 18" MIN. DEPTH W/ UNDERLYING F.F Version 2.0, January 1, 2013 APRON LENGTH = 22' 3DO = 6.0' LA = 12' W = DO + LA = 18.0' SWM#1 OUTFALL ENGINEERED LEVEL SPREADER #1 ., > ENGINEERED LEVEL / ' SPREADER INSTALLED WITHIN 41 DEEP / COURSE AGGREGATE / TRENCH (SEE DETAIL) 2% MAX. FIRST 10' 3%-6%FOR MIN. 40' • I I E.L.S. TQP ELEV. = 51'.10 Fi = 136.5' ; LENGT = 68' DAM BREAK / \ INUNDATION ZONE OUTLET PROTECTION #1 CL 1 RIPRAP W/ UNDERLYING FILTER FABRIC ' SEE OUTLET PROTECTION#1 DETAILS ON SHEET 17 1 \ I / \ / \ 1 100' STREAM BUFFER 142A 100' WPO BUFFER i WIE II■I■I■I■I■ r'�'f Page 19 of 21 VA DCR STORMWATER DESIGN SPECIFICATION NO. 2 SHEET FLOW TO FILTER OR OPEN SPACE rPERMEABLE -ROADWAY OR / BERM (SEC. 6.3) PARKING Y l/ X GRAVEL VEGETATED FILTER `MAXIMUM SLOPE AS DIAPHRAGM STRIP OR PROVIDED IN TABLE 2.2. (FIGURE 2-2) CONSERVED OPEN SPACE WIDTH AS DETERMINED �•I Len h (TABLE 2.2) - TYPICAL CONFIGURATION OF SHEET FLOW TO VEGETATED FILTER STRIP OR CONSERVED OPEN SPACE. Figure 2.1. Typical Configuration of Sheet Flow to Filter Strip or Conserved Open Space '+ IVIIIV 21 !ET FLOW MIN 2' MIN SIDE SLOPE TO -- �IE-- NTSECTION PRACTICE 3' DROP OR FILTER STRIP MENT SUBGRADE Ila:�7_lal AS SPECIFIED BY I F�d I i i I — I IF —I IF —I IF-1 I Fi I —1 I �—� I I I III III I I I —I I I —III —III _ 3N ENGINEER TO -III CLEAN WASHED GRAVEL - VENT SUBGRADE= III- III- �-III-III-III-III-III-III- sATURATION- -III = =111=1 I I I _ I - I -1 1I- IL,III „I L = I1 1i'MINiMUM WITH_ 11 1 1 Figure 2.2. Gravel Diaphragm —Sheet Flow Pre-treatment Version 2.0, January 1, 2013 Page 5 of 21 NOTE: UTILIZE MEASURE AS NECESSARY OR REQUIRED TO PREVENT RE -CONCENTRATION OF RUNOFF FROM ADJACENT IMPERVIOUS SURFACES. REAR YARDS SHALL BE DIRECTED TO AN APPROVED SWM FACILITY WHEN POSSIBLE. CONCENTRATED RUNOFF LEAVING THE REAR YARD TOWARD STEEP SLOPES WITHOUT SHEET -FLOW MANAGEMENT OR STORM -WATER MANAGEMENT CONTROLS IS PROHIBITED. ENGINEERED LEVEL SPREADER #2 OUTFA WV /'/ / /4 / DAM BREAK / �! INUNDATION ZONE �40' ENGINEERED LEVEL SPREADER INSTALLED \ WITHIN 4'x8" DEEP E.L.S. TOP ELEV. = 320.25 , COURSE AGGREGATE R = 46.5' ; LENGTH =43' / TRENCH (SEE DETAIL) Q(10) = 3.26 cfs > 2% MAX. FIRST 10' 3%-6% FOR MIN. 40' / 100, STREAM C / O BUFFER .x .\ j r \ / OUTLET PROTECTION #2 i .\• / 15 CY OF CL 1 RIPRAP W/ \ UNDERLYING FILTER FABRIC SEE OUTLET PROTECTION# 1. .\ DETAILS ON SHEET 17 i t z / 144 / LU 100' WPO BUFFER \.� 144A VA DCR STORMWATER DESIGN SPECIFICATION NO. 2 SHEET FLOW TO FILTER OR OPEN SPACE KEY LEVEL SPREADER INTO EXISTING GRADE RIPRAP PLUNGE POOL .� RIPRAP APRON 6° X 6•' TREATED TIMBERS OR �_ t �.. CONCRETE LIP LENGTH OF LEVEL SPREADER 22, LIP TO BE BASED ON DESIGN FLOW AND ALLOWABLE VELOCITY _ TOP OF LEVEL SPREADER SHALL BE FLAT IT 1-3 IN. COURSE AGGREGATE OR OTHER LINING AS DESIGNED FOR STABILITY PLAN VIEW DIMENSION BASED ON UNDISTURBED EXISTING GRADE DESIGN DISCHARGE 5%(201) OR LEES. IF VEGETATED FILTER STRIP OR CONSERVED OPEN SPACE: FIRST 10 FEET LESS MIN THAN 2% 5' 11AIN 0' MIN 3' MIN 2° MIN_ (DEPTH EVEED0 aT[WE —11Fy 1I—III—II Figure 2.4. Level Spreader: Pipe or Channel Flow to Filter Strip or Preserved Open Space Version 2.0, January 1, 2013 Page 8 of 21 LL #3A - ENGINEERED LEVEL SPREADER #3 t A/. OUTLET PROTECTION #3A I CL 1 RIPRAP W/ UNDERLYING FILTER FABRIC I SEE OUTLET PROTECTION#1 . DETAILS ON SHEET 17 E.L.S. TOP ELEV. = 315,10 R — 46.5' ; LENGTH =68' \ / \ Q(10) = 5.18 cfs ENGINEERED LEVEL SPREADER INSTALLED . J WITHIN 4'x8" DEEP GRAVELED TRENCH (SEE DETAIL) 2% MAX. FIRST 10' . •�� ■ �� I / / 3%-6%FOR MIN. 40' f •\•\• / \ 100' S EAM BUFFER 100' WPO BUFFER , \ 178A Z -� i zU 0 GO Z O Q m rr N N m LL N N O� >oq U Lu cnwn L N ` I-QJ J Z Z CO O 5 C ZWLB O Go LLZILL! Z LLZ O5; W J2 rnQd QL W U Co rn Q W z 0 a tr U U) w 0 z 0 w tr m w 0 O z DRAFTER: I SML DESIGNER: I CCM PRODUCTION ZQD (Ch;ristopher 1 TH Op Df �� C. Mulligan Lic. No. 09/07/22 44' ESSI ONAL E�GN z �O V J Q LLJ 0 z z W Q LLJ a_ W n C/ / 3: Q � z J °6 - O LLJ � Q � N LIJ LIJ o CE m DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 2 O OF 22 Runoff Volume and Curve Number Calculations Enter design storm rainfall depths (in): 1-year storm 2-year storm 10-year storm 2.97 3.59 5.43 Use NOAA Atlas 14(http://hdx.nws.noaa.gov/hdsclpfdslg *Notes (see below): [1] The curve numbers and runoff volumes computed in this spreadsheet for each drainage area are limited in their applicability for determining and demonstrating compliance with Crater quantity requirements. See VRRM User's Guide and Documentation for additional information. 12] Runoff Volume (RV) for pre- and post -development drainage areas must be in volumetric units (e.g., acre-feet or cubic feet) when using the Energy Balance Equation. Runoff measured in watershed -inches and shown in the spreadsheet as RV(watershed-inch) can only be used in the Energy Balance Equation when the pre- and post -development drainage areas are equal. Otherwise RV(watershed-inch) must be multiplied by the drainage area. 13] Adjusted CNs are based on runoff reduction volumes as calculated in D.A. tabs. An alternative CN adjustment calculation for Vegetated Roofs is included in BMP specification No. 5. Drainage Area Curve Numbers and Runoff Depths* Curve numbers (CN, CNodj) and runoff depths (RVDeveloped) are computed with and without reduction practices. Drainage Area A A Soils B Soils C Soils D Soils Forest/Open Space - undisturbed, protected Area (acres) 0.00 0.00 0.00 0.00 CN forest/open space or reforested land 30 55 70 77 Managed Turf-- disturbed, graded for yards or other Area (acres) 0.00 0.00 0.00 15.74 turf to be mowed/managed 39 61 74 80 CN Impervious Cover Area (acres) 0.00 98 0.00 98 0.00 98 6.06 98 CN CN(DA. A) 95 1-yearstorm 2-yearstorm 10-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 1.56 2.09 3.77 RVDeveloped (watershed -inch) with Runoff Reduction* 1.23 1.76 3.43 Adjusted CN* 80 81 82 *See Notes above Drainage Area B A Soils B Soils C Soils D Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 0.00 55 0.00 70 0.00 77 CN Managed Turf-- disturbed, graded foryards or other turf to be mowed/managed Area (acres) 0.00 39 0.00 61 0.00 74 5.95 80 CN Impervious Cover Area (acres) 0.00 98 0.00 98 0.00 98 1.70 98 CN RVDeveloped (watershed -inch) with no Runoff Reduction* RVDeveloped (watershed -inch) with Runoff Reduction* Adjusted CN* 1-year storm 1.49 1.19 79 2-year storm 2.01 1.71 So 10-year storm 3.67 3.36 81 CN sa84 *See Notes above Drainage Area C A Soils B Soils C Soils D Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 0.00 55 0.00 70 0.00 77 CN Managed Turf-- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 0.00 61 0.00 74 0.33 80 CN Impervious Cover Area (acres) 0.00 98 0.00 98 0.00 98 1.00 98 CN RVDeveloped (watershed -inch) with no Runoff Reduction* RVDeveloped (watershed -inch) with Runoff Reduction*1 Adjusted CN*1 1-yearstorm 2.32 1.74 87 2-year storm 1 2.92 1 2.34 1 88 10-year storm 4.73 4.15 89 CN(DA. c) 94 *See Notes above Drainage Area D A Soils B Soils C Soils D Soils Forest/Open Space - undisturbed, protected Area (acres) 0.00 0.00 0.00 0.00 forest/open space or reforested land CN 30 55 70 77 Managed Turf- disturbed, graded foryards or other Area (acres) 0.00 0.00 0.00 0.62 CN turf to be mowed/managed 39 61 74 80 Impervious Cover Area (acres) 0.00 98 0.00 98 0.00 98 1.85 98 CN CN(DA. D) 94 1-yearstorm 2-year storm 10-year storm RVDeveloped (watershed -inch) with no Runaff Reduction* 2.32 12.92 4,73 RVDeveloped (watershed -inch) with Runoff Reduction* 1.74 2.34 4.15 Adjusted CN* 87 88 89 Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ac) IMPERVIOUS COVER (ac) IMPERVIOUS COVER TREATED (ac) MANAGED TURF AREA (ac) MANAGED TURF AREA TREATED (ac) AREA CHECK Total Area (acres): Runoff Reduction Volume (ft'): 21.80 Total Area (acres): 7.65 Runoff Reduction Volume Ift31: 8.447 Total Area (acres): 1.33 Runoff Reduction Total Area (acres): 2.46 Runoff Reduction Project Name: I BREEZY HILL-75.6 Acres Date: 1 8/30/2022 75.61 ac. +6.72 ac. =82.33 BMP Design Speci)tcotiwls List: 2013 Draft Stds & Specs Site Information Post -Development Project (Treatment Volume and Loads) Land Cover (acres) A Soils BSoils CSoils DSoils Totals I""rest/apen 5pace (acres)- undisturbed, rotectedforestoen amormfomsted 3.47 6.70 10.17 '.Managed Turf (acres) -- di4urbed, graded for yards or othe rturf to be 2.20 55.60 57.80 Impervious cover(acres) 0.85 10.35 11.20 •Forest/Opm Spam arms must bepmtectedin acmManor with the Virginia BuncifBeduMon Method 79.17 Constants :Annual Rainfall (inches) 43 Target Rainfall Event (inches) 1.00 (Total Phosphorus TP) EMC(mg/L) 0.26 Total Nitrogen( TN) EMC(mg/L) 1.86 Target TP Load(lb/acre/yr) 0.41 Pi( artless correction factor) 0.90 D.A. E AREA CHECK 0.00 0.00 0.00 0.00 0.00 OK. 6.06 1.70 1.00 1.85 0.00 OK. 6.06 1.70 1.00 1.85 0.00 OK. 15.74 5.95 0.33 0.62 0.00 OK. 15.74 5.95 0.33 0.62 0.00 M. OK. OK. OK. OK. OK. Site Treatment Volume (ft) - Runoff Reduction Volume and TP By Drainage Area RUNOFF REDUCTION VOLUME ACHIEVED (fta) TP LOAD AVAILABLE FOR REMOVAL (lb/yr) TP LOAD REDUCTION ACHIEVED (lb/yr) TP LOAD REMAINING (lb/yr) TOTAL 26,386 8,447 2,806 5, 19 0 0 42,830 22.10 7.08 2.35 4.35 0.00 1 35.88 16.56 5.30 1.76 3.26 0.00 26.88 5.54 1.77 0.59 1.09 0.00 9.00 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr)11 118.47 37.92 12.60 23.30 11 0.00 1 192.29 Total Phosphorus FINAL POST -DEVELOPMENT TP LOAD (lb/yr)N31 TP LOAD REDUCTION REQUIRED (lb/yr) TP LOAD REDUCTION ACHIEVED (lb/yr) TP LOAD REMAINING (lb/yr): REMAINING TP LOAD REDUCTION REQUIRED (lb/yr): 0.00 ** ** TARGET TP REDUCTION EXCEEDED BY 1.37 LB/YEAR ** Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (lb/yr) 414.74 NITROGEN LOAD REDUCTION ACHIEVED (lb/yr) 192.29 REMAINING POST -DEVELOPMENT NITROGEN LOAD (lb/yr) 222.45 a„nnff rneMA-te IMA A Soils BSoils CSol ls DSoils Forest/Open Space 0.02 0.03 0.04 0.05 Managed Turf1 0.15 0.20 0.22 0.25 Impervious Cover 1 0.95 0.95 0.95 0.95 data input cells constantvalues FIGURE 2.1. TYPICAL CONFIGURATION OFSHEET FLOW TO FILTER STRIP OR CONSERVED OPEN SPACE calculationcells r� -ROADWAY OR PARKING DIAPHRAGM (FIGURE 22) X VEGETATED FILTER STRIP OR CONSERVED OPEN SPACE WIDTH AS DETERMINED (FABLE 2 2) - TYPICAL CONFIGURATION OF SHEET FLOW TO VEGETATED FILTER STRIP OR CONSERVED OPEN SPACE BERM (SEC. 6.3) MAXIMUM SLOPE AS PROVIDED IN TABLE 2.2. Forest/Open Space Cover (acres) 10.17 Treatment Volume 2.1183 (acre-ft) Weighted Rv (forest) 0.04 Treatment Volume (cubic feet) 92,271 %Forest 13% TP Load (lb/yr) 57.97 Managed Turf Cover (acres) 57.80 TN Load lUnfounationaPuro Lila 7a FIGURE 2.2. GRAVEL DIAPHRAGM- SHEET FLOW PRE-TREATMENT Weighted Rv (turf) 0.25 4 MIN %Managed Turf 73% 2' Cover(acres) 11.20 EET FLOW MIN 2' mpervious MIN SIDE SLOPE TO Rv (impervious) 0.95 RENT SECTION ' PRACTICE - -. _�_�� 3" DROP OR FILTER STRIP %Impervious 14% 79.17 MENT SUBGRADE 1>j, Site Area (acres) Site Rv 0.32 v\4i�::L.Li/•i (; I /� /IYYI 41 roil r... VA DEQ STORMWATER DESIGN SPECIFICATION NO. 2 SHEET FLOW TO FILTER OR OPEN SPACE SECTION 5. PHYSICAL FEASIBILITY & DESIGN APPLICATIONS 5.1 Conserved Open Space The most common design applications of Conserved Open Space are on sites that are hydrologically connected to a protected stream buffer, wetland buffer, floodplain, forest conservation area, or other protected lands. Conserved open space is an ideal component of the "outer zone" of a stream buffer, such as a Resource Protection Area (as is required in some parts of the state), which normally receives runoff as sheetflow. Care should be taken to locate all energy dissipaters or flow spreading devices outside of the protected area. Designers may apply a runoff reduction credit to any impervious or managed turf cover that is hydrologically connected and effectively treated by a protected Conserved Open Space that meets the following eligibility criteria: • The goal of establishing Conserved Open Space is to protect a vegetated area contiguous to a receiving system, such as a stream or natural channel, for treating stormwater runoff. Establishing isolated Conserved Open Space pockets on a development site may not achieve this goal unless they effectively serve to connect the surface runoff to the receiving system. Therefore, a locality may choose to establish goals for minimum acreage to be conserved (in terms of total acreage or percentage of the total project site), and the physical location (adjacent to a stream, or other criteria) in order for the cumulative conserved open space to qualify for the RRM credit. • No major disturbance may occur within the conserved open space during or after construction (i.e., no clearing or grading is allowed except temporary disturbances associated with incidental utility construction, restoration operations, or management of nuisance vegetation). The Conserved Open Space area shall not be stripped of topsoil. Some light grading may be needed at the boundary using tracked vehicles to prevent compaction. • The limits of disturbance should be clearly shown on all construction drawings and protected by acceptable signage and erosion control measures. • A long term vegetation management plan must be prepared to maintain the Conserved Open Space in a natural vegetative condition. Generally, Conserved Open Space management plans do not encourage or even allow any active management. However, a specific plan should be developed to manage the unintended consequences of passive recreation, control invasive species, provide for tree and understory maintenance, etc. Managed turf is not considered an acceptable form of vegetative management, and only the passive recreation areas of dedicated parkland are eligible for the practice (e.g., the actively used portions of ball fields and golf courses are not eligible), although conservation areas can be ideal treatment practices at the edges of turf -intensive land uses. • The Conserved Open Space must be protected by a perpetual easement or deed restriction that assigns the responsible party to ensure that no future development, disturbance, or clearing may occur within the area. • The practice does not apply to jurisdictional wetlands that are sensitive to increased inputs of stormwater runoff (e.g., bogs and fens). Version 1.9, March 1, 2011 Page 10 of 20 =III=I I �=III=III=III- III-III =I -FILTER FABRIC NG AS SPECIFIED BY -I I I I- I -I I I -I I I -I I U I F IESIGN ENGINEER TO- I III=III III I ( III I I CLEAN WASHED DREVENT SUBGRADE= -III I I -I -III-III-I 11-111- SATURATION -III III -III I I IF I !-I -1 GRAVELED DIAPHRAGM GRAVEL DIAPHRAGM IS CREATED BY EXCAVATING A 2-FOOT WIDE AND 1-FOOT DEEP TRENCH THAT RUNS ON THE SAME CONTOUR AT THE TOP OF THE FILTER STRIP. THE DIAPHRAGM SERVES TWO PURPOSES. FIRST, IT ACTS AS A PRETREATMENT DEVICE, SETTLING OUT SEDIMENT PARTICLES BEFORE THEY REACH THE PRACTICE. SECOND, IT ACTS AS A LEVEL SPREADER, MAINTAINING SHEET FLOW AS RUNOFF FLOWS OVER THE FILTER STRIP. REFER TO FIGURE 2.2. 1. THE FLOW SHOULD TRAVEL OVER THE IMPERVIOUS AREA AND TO THE PRACTICE AS SHEET FLOW AND THEN DROP AT LEAST 2 INCHES ONTO THE GRAVEL DIAPHRAGM. THE DROP HELPS TO PREVENT RUNOFF FROM RUNNING LATERALLY ALONG THE PAVEMENT EDGE, WHERE GRIT AND DEBRIS TEND TO BUILD UP (THUS ALLOWING BY-PASS OF THE FILTER STRIP). 2. A LAYER OF FILTER FABRIC SHOULD BE PLACED BETWEEN THE GRAVEL AND THE UNDERLYING SOIL TRENCH. 3. IF THE CONTRIBUTING DRAINAGE AREA IS STEEP (6% SLOPE OR GREATER), THEN LARGER STONE (CLEAN BANK -RUN GRAVEL THAT MEETS VDOT #57 GRADE) SHOULD BE USED IN THE DIAPHRAGM. 4. IF THE CONTRIBUTING DRAINAGE AREA IS SOLELY TURF (E.G., SPORTS FIELD), THEN THE GRAVEL DIAPHRAGM MAY BE ELIMINATED. LEVEL SPREADER CONSTRUCTION NOTES 1. A TRANSITION SECTION 20 FEET IN LENGTH SHALL BE CONSTRUCTED FROM THE WIDTH OF THE DIVERSION OR CHANNEL TO THE WIDTH OF THE SPREADER TO ENSURE UNIFORM OUTFLOW. THIS LAST TRANSITION SECTION WILL BLEND THE DIVERSION GRADE TO ZERO GRADE AT THE BEGINNING OF THE SPREADER. 2. CONSTRUCT THE LEVEL LIP IN UNDISTURBED SOIL TO A UNIFORM HEIGHT AND ZERO GRADE OVER THE LENGTH OF THE SPREADER. PROTECT THE LIP WITH AN EROSION RESISTANT MATERIAL OR MAT TO PREVENT EROSION AND ALLOW VEGETATION TO BECOME ESTABLISHED. 3. THE OUTLET AREA SHOULD BE A GENERALLY SMOOTH, WELL VEGETATED AREAS NO STEEPER THAN 10 PERCENT. LEVEL SPREADER CONSTRUCTION AND MAINTENANCE SPECIFICATIONS • LEVEL SPREADER LIP MATERIAL A CONCRETE OR STURDY METAL LIP SHOULD BE USED IN ALL LEVEL SPREADERS. THE LIP SHOULD BE TIED INTO THE SOIL WITH AN APPROPRIATELY SIZED CONCRETE FOOTER OR SIMILAR FOOTER. • LEVEL SPREADER LIP DIMENSIONS THE CONCRETE LIP SHOULD EXTEND 3 TO 6 INCHES ABOVE THE EXISTING GRADE ON THE BUFFER SIDE. JUST AFTER THE LIP, A 3-FOOT WIDE, 3- TO 4-INCH THICK LAYER OF NO. 57 STONE SHOULD BE USED TO MINIMIZE EROSION DUE TO THE WATER SPILLING OVER THE LEVEL LIP. THIS GRAVEL SHOULD BE LAID ON TOP OF FILTER FABRIC THAT HAS BEEN TIED INTO THE SOIL. • BUFFER SLOPE RIPARIAN BUFFER SLOPES SHOULD NOT EXCEED 8% WHEN DISCHARGING INTO A DENSELY VEGETATED BUFFER • MAINTENANCE LEVEL SPREADERS SHOULD BE MAINTAINED YEARLY AND AFTER STORMS GREATER THAN OR EQUAL TO A TWO YEAR, 24-HOUR EVENT. SEDIMENT AND DEBRIS SHOULD BE REMOVED FROM THE FOREBAY AND FROM THE CHANNEL BEHIND THE LEVEL LIP. • ALL TREES AND VEGETATION THAT GROW IN THE SECTION OF NO. 57 STONE SHOULD BE REMOVED. THE GRASS IN ALL SWALES SHOULD BE MAINTAINED, AND THE LEVEL SPREADER AND BUFFER SHOULD BE CHECKED FOR SIGNS OF EROSION. • EROSION THAT IS DISCOVERED IN THE BUFFER SHOULD BE ADDRESSED THROUGH THE APPLICATION OF EROSION CONTROL MAT AND THROUGH RE -GRADING IF NECESSARY. LEVEL SPREADER & GRAVEL DIAPHRAGMS: A PEA GRAVEL DIAPHRAGM AT THE TOP OF THE SLOPE IS REQUIRED FOR BOTH CONSERVED OPEN SPACE AND VEGETATED FILTER STRIPS THAT RECEIVE SHEETFLOW. THE PEA GRAVEL DIAPHRAGM IS CREATED BY EXCAVATING A 2-FOOT WIDE AND 1-FOOT DEEP TRENCH THAT RUNS ON THE SAME CONTOUR AT THE TOP OF THE FILTER STRIP. THE DIAPHRAGM SERVES TWO PURPOSES. FIRST, IT ACTS AS A PRETREATMENT DEVICE, SETTLING OUT SEDIMENT PARTICLES BEFORE THEY REACH THE PRACTICE. SECOND, IT ACTS AS A LEVEL SPREADER, MAINTAINING SHEET FLOW AS RUNOFF FLOWS OVER THE FILTER STRIP. REFER TO FIGURE 2.2. • THE FLOW SHOULD TRAVEL OVER THE IMPERVIOUS AREA AND TO THE PRACTICE AS SHEET FLOW AND THEN DROP AT LEAST 2 INCHES ONTO THE GRAVEL DIAPHRAGM. THE DROP HELPS TO PREVENT RUNOFF FROM RUNNING LATERALLY ALONG THE PAVEMENT EDGE, WHERE GRIT AND DEBRIS TEND TO BUILD UP (THUS ALLOWING BY-PASS OF THE FILTER STRIP). • A LAYER OF FILTER FABRIC SHOULD BE PLACED BETWEEN THE GRAVEL AND THE UNDERLYING SOIL TRENCH. • IF THE CONTRIBUTING DRAINAGE AREA IS STEEP (6% SLOPE OR GREATER), THEN LARGER STONE (CLEAN BANK -RUN GRAVEL THAT MEETS VDOT #57 GRADE) SHOULD BE USED IN THE DIAPHRAGM. • IF THE CONTRIBUTING DRAINAGE AREA IS SOLELY TURF (E.G., SPORTS FIELD), THEN THE GRAVEL DIAPHRAGM MAY BE ELIMINATED. CONSTRUCTION SEQUENCE FOR LEVEL SPREADER F"LMENTATION LEVEL SPREADERS CAN BE WITHIN THE LIMITS OF DISTURBANCE DURING CONSTRUCTION. THE FOLLOWING PROCEDURES SHOULD BE FOLLOWED DURING CONSTRUCTION: • BEFORE SITE WORK BEGINS, OUTLET PROTECTION BOUNDARIES SHOULD BE CLEARLY MARKED. • ONLY VEHICULAR TRAFFIC USED FOR CONSTRUCTION SHOULD BE ALLOWED WITHIN 10 FEET OF THE OUTLET BOUNDARY. • IF EXISTING TOPSOIL IS STRIPPED DURING GRADING, IT SHALL BE STOCKPILED FOR LATER USE. • CONSTRUCTION RUNOFF SHOULD BE DIRECTED AWAY FROM THE LEVEL SPREADER USING APPROPRIATE EROSION CONTROL MEASURES AND A DIVERSION DIKE OR OTHER MEASURE. • CONSTRUCTION OF THE GRAVEL DIAPHRAGM OR ELS SHALL NOT COMMENCE UNTIL THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED AND PERIMETER E&S CONTROLS 14AVE BEEN REMOVED AND CLEANED OUT. • LEVEL SPREADER APRONS REQUIRE LIGHT GRADING TO ACHIEVE DESIRED ELEVATIONS AND SLOPES. THIS SHOULD BE DONE WITH TRACKED VEHICLES TO PREVENT COMPACTION. TOPSOIL AND OR COMPOST AMENDMENTS SHOULD BE INCORPORATED EVENLY ACROSS THE AREA, STABILIZED WITH SEED, AND PROTECTED BY BIODEGRADABLE EROSION CONTROL MATTING OR BLANKETS. • STORMWATER SHOULD NOT BE DIVERTED INTO THE LEVEL SPREADER UNTIL THE UPSTREAM AREAS ARE WELL TURF COVERED IN DENSE AND WELL ESTABLISHED YARD AREAS. 1� 0 GO z O Lo Q m 0 y rr L U N Old � UU wNN DO rr Om v�>o 0 U L] n L z rnw� J I-QJ J � 0 F7� Z co -0 V � zm rnLu 0 O W w o Z L L z LU LLW J2 O j rnQd d co co 0) Q Wirr o���PyTH Op Df�� Christopher C. Mulligan Lic. No. 09/07/22 ww� OFESSIONAL E�Gl} z �O U, V J J \_ Q 0 z � W Q W U Q � z LLJ J °6 z 0 Q LU co N W mW J W z O d U V) W to Z O w CO H Q 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION• ZQD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 21OF 22 oP OUTLET PROTECTION SPECIFICATIONS oP OUTLET PROTECTION SPECIFICATIONS v 4'.0 CY, CL I RIP -RAP 35.0 CY VDOT # 3 o KEYED 6" INTO NATURAL AGGREGATE KEYED 5" Lh o F 15" PIPE 010 =0.8 cfs NTO NATURAL GROUND :UIa o F 22" PIPE Q10 = 67.0 cfs OP5 C18 OUND OP10 18" MIN. DEPTH W/DO MIN.DEPTH W/ �fUNDERLYING F.F��DERLYING F.F APRON LENGTH = 9' 3DO = 4.0' LA = 9' APRON LENGTH = 30.0' W=DO+LA=13.0' 3DO =6.0' LA oP OUTLET PROTECTION SPECIFICATIONS + W=DO+LA =36.0' YVD T�3 oPOUTLET PROTECTION SPECIFICATIONS Y__6.D �GGREGATE KEYED 6"tea OP6 INTO NATURAL GROUND 18" MIN. DEPTH W/ UNDERLYING F.F APRON LENGTH = 12' 3DO = 6.0' LA = 12.0' W = DO + LA = 18.0' (6 <- 24" PIPE 010 =16.4 cfs oP OUTLET PROTECTION SPECIFICATIONS AGGREGATE KEYED 6" OP7 v NTO NATURAL GROUND � In F 18" PIPE Q10 = 0.50 cfs T �18" MIN. DEPTH W/ a /UNDERLYING F.F U APRON LENGTH = 10.0' 3DO = 4.5' LA = 10.0' W = DO + LA = 14.5' oP OUTLET PROTECTION SPECIFICATIONS AGGREGATE KEYED 6" LO NTO NATURAL GROUND un. F 18" PIPE Q10 = 10.5 cfs OP8 Q18" MIN. DEPTH W/ UNDERLYING F.F 1 APRON LENGTH = 11.0' 3DO = 4.5' LA = 11.0' W = DO + LA = 15.5' oP OUTLET PROTECTION SPECIFICATIONS 41.5 CY VDOT # 3 O AGGREGATE KEYED fill NTO NATURAL GROUND a o F 24" PIPE OP9 Qig" MIN. DEPTH W/� (O NDERLYING F.F 1 APRON LENGTH = 33.0' 3DO = 6.0' LA = 33.0' W=DO+LA=39.0' 60 PRECAST MANHOLE Q10 = 74.0 cfs TRASH RACK & ANTI -VORTEX DEVICE SEE DETAIL RISER TOP & DEBRIS DEVICE AS REQUIRED B' 60°,72%B4" AND 96" I.D. 4 DrN1ru 41 LD. STORM PIPE I IC 6' MIN. ..00 opo0 D... o o Da.'p DD 000 0 opo O o0ooapD� �p� BENCH MAY BE EXTENDED MONOLITHIC #57 STONE BEDDING BASE ❑PTIONAL BRICK AND MORTAR OR 3000# CONCRETE NOTE: WHERE STUBS ARE PROVIDED FOR FUTURE CONNECTIONS BENCH SHALL BE SO FORMED. AGGREGATE KEYED 6" r INTO NATURAL GROUND OP11 T 8" MIN. DEPTH W/ UNDERLYING F.F APRON LENGTH = 13.0' 3DO = 4.0' LA = 13.0' W=DO+LA=17.0' F 1511 PIPE Q10=14.6cfs II II COMPACTED MATERIAL AS RECOMMENDED BY GEOTECHNICAL ENGINEER 4" SEE NOTE 1. I OUTLET COMPACTED SUBBASE - COMPACTED GRAVEL - COMPACTED SUBGRADE •. { SEE NOTE 3. I 4. TRASH GRATE/ ANTI -VORTEX, DI TOP. OR APPROVED EQUAL SEE NOTE 2. VARIES CEMENT CONCRETE INFILL INCREASE SIR. I,: o '•., ' . •. z DEPTH BY 6" .. ' .'P.'..°.. . 'P:• ' °'0-2 FOR EACH 5 FEET OVER 10' >•" 12" OF HEIGHT TYP. Notes: 1. PROVIDE "V" KNOCKOUTS FOR PIPES WITH 2" MAX. CLEARANCE TO OUTSIDE OF PIPE. MORTAR ALL PIPE CONNECTIONS. 2. JOINT SEALANT BETWEEN PRECAST SECTIONS SHALL BE PREFORMED BUTYL RUBBER. 3. INSTALL LOW FLOW DRIER IF/AS SPECIFIED FOR CONVERSION. 4. UPON CONSTRUCTION OF SEDIMENT BASIN RISER, INSTALL TRASH -RACK Typical Pond Riser Detail 11/21 N.T.S. 2016 ROAD & BRIDGE STANDARDS PB-I NO PROJECTION OF PIPE ABOVE GROUND LINE TOP OF FILL TOP OF FILL TOP OF FILL GROUND LINE = GROUND LINE = GROUND LINE x r _ rrriir rrrr I rrrr rrr I � rrr rr -II -- d - EARTH -rrrrr rrrrr - I � rrrr rrr I � � II -III rr d r- ROCK _ r riri r-rr I:• - I jf/ r r I � N rr �r EARTH + + DI UNYIELDING � (� � � N � SOIL o _ o BEDDING - ' MATERIAL � I _ E_ MIN. 1/10 D1'4 a X D X BEDDING MI p p X D X BEDDING MIN. 1/10 D - 11 MATERIAL MATERIAL % D X Y2" PER 1' OF H MIN. B", MAX. 24" FOUNDATION SOFT, YIELDING, OR NORMAL EARTH FOUNDATION ROCK FOUNDATION OTHERWISE UNSUITABLE MATERIAL PIPE PROJECTION ABOVE GROUND LINE MIN. 1.5 x D MIN. 1.5 x D MIN. 1.5 x D MIN. 1.5 x D MIN. 1.5 x D MIN. 1.5 x D � STOP OF FILL TOP OF FILL STOP OF FILL $;o oo -rrrrr rrrrr ., o,�.,aJ� _ °, _ _ • o ,°� rrrrr rrrrr o° - - = rrrrrrrrrrrrrii rrrrrrirrrrrrrr rrrrrrrrrrrrri rrrrrrrrrrrrr = -_ S.=e rrr rrr �o o, Nvrrrr + o° ° r 6 ,�,o 0o;a,=°,'°GROUND ° rir %^��'°°,° �, + •o�'R°y°'J O°°oo• GROUND - -----r-rrrr rrriiirrrrr riiiirrrrrr = - o ;0000a°°o° LINE r d r �°• LINE °° + o d rrrrr----- -GROUND 4 = N = �- -LINE - a EARTH II C ROCK OR 11 =LET x rj MIN. 1/10 D UNYIELDING - • �I I-11 rl1 rn �I r-" •-- MIN. 1/10 D MIN. 1/10 D X D X BEDDING Yz' pER - r SOIL X D X MIN. 8", BEDDING BEDDING EARTH MATERIAL MAX. 24" MATERIAL FOUNDATION SOFT, YIELDING, OR NORMAL EARTH FOUNDATION ROCK FOUNDATION OTHERWISE UNSUITABLE MATERIAL ®BEDDING MATERIAL IN ACCORDANCE WITH ® EMBANKMENT NOTES SECTION 302 OF THE ROAD AND BRIDGE SPECIFICATIONS. FOR GENERAL NOTES ON PIPE BEDDING, CLASS I BACKFILL MATERIAL IN ACCORDANCE SEE INSTALLATION OF PIPE CULVERTS WITH SECTION 302 OF THE ROAD AND BRIDGE AND STORM SEWERS GENERAL NOTES SPECIFICATIONS. �,• ON SHEET 107.00. REGULAR BACKFILL MATERIAL IN ACCORDANCE rrrrr FOR PLASTIC PIPE CLASS I BACKFILL MATERIAL WITH SECTION 302 OF THE ROAD AND BRIDGE CRUSHED GLASS CONFORMING TO THE SPECIFICATIONS. IN ACCORDANCE WITH SECTION 302 OF THE ROAD SIZE REQUIREMENTS FOR CRUSHER RUN AND BRIDGE SPECIFICATIONS. AGGREGATE SIZE 25 AND 26 MAY BE FOR ALL OTHER PIPE REGULAR BACKFILL MATERIAL USED IN PLACE OF CLASS I BACKFILL. rrrrr IN ACCORDANCE WITH SECTION 302 OF THE ROAD AND BRIDGE SPECIFICATIONS. vDxT INSTALL. OF PIPE CULVERTS AND STORM SEWERS SPECIFICATION ROAD AND BRIDGE STANDARDS CIRC. PIPE BEDDING AND BACKFILL - METHOD ''A11 302 SHEET 1 OF 4 REVISION DATE 07/12 VIRGINIA DEPARTMENT OF TRANSPORTATION 303 107.01 2016 ROAD & BRIDGE STANDARDS GENERAL T. METHOD "A" PIPE BEDDING SHALL BE USED FOR ALL TYPES OF PIPE CULVERTS WITHIN THE APPLICABLE HEIGHT OF COVER RANGE NOTED IN THE STANDARD PC-1 TABLES UNLESS OTHERWISE NOTED ON THE PLANS. 2. H = HEIGHT OF COVER MEASURED FROM TOP OF CULVERT TO FINISHED GRADE. 3. b - EXCAVATION DEPTH AS SHOWN ON PLANS OR TO FIRM BEARING SOIL. CIRCULAR PIPE 1. D - OUTSIDE DIAMETER OF PIPE. 2. d - INSIDE DIAMETER OF PIPE. 3. X WIDTH OF CLASS BACKFILL MATERIAL BEYOND THE EXTREMITY OF THE PIPE. X • 12" WHERE d IS LESS THAN 35% X - 18" WHERE d IS 36" AND GREATER. 4. WHERE DIRECTED BY THE ENGINEER. BEDDING MATERIAL MAY BE ELIMINATED FOR NORMAL EARTH FOUNDATIONS UNDER ROUTINE ENTRANCE PIPE (EXCEPT PLASTIC PIPE) 30" AND LESS IN DIAMETER WITH HEIGHT OF COVER 15' OR LESS, 5. REGULAR BACKFILL MATERIAL MAY BE USED IN LIEU OF CLASS I BACKFILL MATERIAL FOR ALL FOUNDATION TYPES FOR ROUTINE ENTRANCE PIPE (EXCEPT PLASTIC PIPE) 30" AND LESS IN DIAMETER WITH HEIGHT OF COVER 15' OR LESS. 6. BEDDING MATERIAL AND CLASS I BACKFILL MATERIAL MAY BE ELIMINATED FOR SHOULDER SLOT INLET (DI-13) OUTLET PIPES INSTALLATIONS. ELLIPTICAL PIPE 1. S1 - OUTSIDE SPAN DIMENSION OF PIPE. 2. S2 = INSIDE SPAN DIMENSION OF PIPE. 3. R - OUTSIDE R15E DIMENSION OF PIPE. 4. X -WIDTH OF CLASS &BACKFILL MATERIAL BEYOND THE EXTREMITY OF THE PIPE. X - X 118WHERE S2 15 LESS THAN 36". WHERE S2 IS 36" AND GREATER 5. WHERE DIRECTED BY THE ENGINEER. BEDDING MATERIAL MAY BE ELIMINATED FOR NORMAL EARTH FOUNDATIONS UNDER ROUTINE ENTRANCE PIPE WHERE $2 15 38" OR LESS PND HEIGHT OF COVER 15' OR LESS. 6. REGULAR BACKFILL MATERIAL MAY BE USED IN LIEU OF CLASS I BACKFILL MATERIAL FOR ALL FOUNDATION TYPES FOR ROUTINE ENTRANCE PIPE WHERE S2 IS 38" OR LESS AND HEIGHT OF COVER 15' OR LESS. PIPE ARCH 1. S - SPAN DIMENSION OF PIPE. 2. R = RISE DIMENSION OF PIPE. 3. B SEE PC-1 TABLE FOR APPLICABLE PIPE MATERIAL 4. x WIDTH OF CLASS I BACKFILL MATERIAL BEYOND THE EXTREMITY OF THE PIPE. X - 12" WHERE S2 IS LESS THAN 36". x - 18" WHERE S2 IS 36" AND GREATER 5- WHERE DIRECTED BY THE ENGINEER. BEDDING MATERIAL MAY BE ELIMINATED FOR NORMAL EARTH FOUNDATIONS UNDER ROUTINE ENTRANCE PIPE WHERE 52 IS 35" OR LESS AND HEIGHT OF COVER 15' OR LESS. 6' REGULAR BACKFILL MATERIAL MAY BE USED IN LIEU OF CLASS I BACKFILL MATERIAL FOR ALL FOUNDATION TYPES FOR ROUTINE ENTRANCE PIPE WHERE S IS35" OR LESS AND HEIGHT OF COVER 15' OR LESS. '/R SECTION CAST WON Y2 SECTION STEEL NOTES 2'-7" LUGS TO 1'-] L 2%' + 2y," x '/," CAST WITH 10'-{^ LONG 1. DEPTH OF INLET (1O TO BE SHOWN ON COLLAR STANDARD DEPTH GREATER THAN 10'USE - - A T- STNDAD DI -IA - - OPTION& BRACE RIBS n 21-7" 4'-]" CAST GALV. IRON STEEL 66 ± 3 LBS 43.6 LBS INCLUDING INCLUDING LUGS CONVECTORS 2. THE "H" DIMENSION SHOWN ON THE STANDARDS AND SPECIFIED ON THE PLANS WILL BE MEASURED FROM THE INVERT OF ONE WELDED THE OUTFALL PIPE TO THE TOP OF THE JOIM STRUCTURE. PLAN "H" DIMENSIONS ARE APPRO%MATE ONLY FOR ESTIMATING WELD ALL PURPOSES AD THE ACTUAL DIMENSIONS GE SHALL BE DETERMINED BY THE TO COLLAR CONTRACTOR FROM FIELD CONDITIONS. 3. WHEN SPECIFIED ON THE PLANS THE RIVER T 15 TO BE SHAPED IN ACCORDANCE WITH STANDARD IS-1. THE COST OF FURNISHING AND PLACING ALL MATERIALS INCIDENT IL TO THE SHAPNG IS TO BE INCLUDED IN THE BID PRICE FOR THE PLAN Vi' • 1'/d' x 4"J /d' • 4" STRUCTURE. (GRATE REMOVED) LUGS 12' 11 B'/z" CONNECTORS STUD SHEAR 4. IN THE EVENT THE INVERT OF THE - SE[[ OEiAL A OUTF&L PPE IS HIGHER THAN THE BOTTOM OF THE STRUCTURE, THE INVERT~•�r)e" OF THE STRUCTURE SHA_L BE SHAPED SECTION B-B WITH CEMENT MORTAR TO PREVENT STANDING OR POIDING OF WATER IN THE STRUANDFLURNGTHECOST MATEOF FURNS ING COLLAR DETAIL y'• MIN RASED TO INLET SHAPING IS TO BE INCLUDED LETTERING IN TIE BID PRICE FOR THE STRUCTURE. DMENSIONS FOR CAST WON ONLY DUMP NO WASTE MANS TO WATERWAYS 5. STEPS ME TO BE PROVIDED WHEN H IS 4'-0" OR GREATER. FOR DETAILS SEE sTANDCRD ST-1. DETAIL 8 DETNL A fT U I 6. THIS ITEM MAY BE PRECAST OR CMT- W-PLACE. 2, T„ HMDWME CLOTH 2-6" I'-3" S� I DETNL B1 T. NLA % 8I SMOOTH DOWELS AT 0.ACED MATELL I12" C C TO NT OCEE DEPTH 4w TO ABUTTING TO A; T STTLLMENILIEU NB X fi' WIN ��� A 2"X4' NOTCH MAY BE PROVIDED. SEE STANDARD T-DI-J,4 FOR IT ,D. COLLAR 3" DIAMETER WEEP ROLE SEE NOTE B 8. ALTERNATE DESIGN. 3' OIANETER WEEP HOLE WITH 12"X12"z2PLASTIC HARDWARE CLOTH''/" MESH GALVANIZED STEEL WIRER ORE VAETER OR N'• ���0����������WI 4M E12"-15"-18" O.OJ".NUMBER ♦ MESH G I U0�0�0 9. TO THE OUTSIDE OF THE STRUCTURE. ACE CAST M PLACE CONCRETE IS TO BE d • e 55[f[ CLASS 0.} PSG. PRECAST • ' OEI.OL g CONCRETE IS TO BE 4000 P51. SECTION A -A I'/e+I I L 1 +•IL I^ D�.J - 2^ �, 1D. MY ALTERNATE METHODS OF ANCHORAGE CONCRETE QUANTITIES FOR MIN. DEPTH Q I �` ? jI f -1 4••I I< MEETNG THE APPROVAL OF THE ENGINEER MAT BE SUBSTITUTED FORT T R N HE cM o LUGS M SHOWN HEREON. 12" CONCRETE PIPE - 1A40 W. YD. CONCRETE 15" CONCRETE PIPE - 1.526 CU. YD. CONCRETE I'/" �� 'PROXIMATE WEIGHT �" CANT IR 11. WARP NO WASTE MANS TO WATERWAY IB" CONCRETE PPE - 1.620 OU, YD. CONCRETE GRATE J6J ± 16 DES i LETTERING LOCATION OFDLETTERNG MAY 24" CONCRETE PIPE - 1.617 CU. TO. CONCRETE SECTION C-C SECTION D-D VARY BY MANUFACTURER. AA'DDpTO.N 1 FOOT°OF D10DEPTH. GRATE DETAIL STANDARD DROP INLET 'REFERENCE 1211 - 2411 PIPE: MAXIMUM DEPTH (H) - 101 REV 8/07 233 104.01 VIRGINA DEPARTMENT OF TRANSPORTATON 302 PG-2A OUTSIDE ROAD DITCHES MEDIAN DITCH TYPE D SQ. YDS. OR 001TCISiLOPE SOP6 6 :IDES. 0 3'.1M' D - DEPTH W1 W2 SURFACE SLOPE a 5I'cF PER LIN. FT. 0.611 wK - 82 WR NN2 DITCH AT TOE OF FILL OR TOP OF CUT TYPE D FRONT SLOPE BACK SLOPE W1 W2 K SO. YDS. SURFACE AREA/LIN. FT. Al 6" 6:1 4:1 T-O" 2'-l" 48 0.565 Al V. 6:1 4:1 4'-1" 2'-9" 104 .0759 A2 6" 6:1 3:1 Y-0" l'-/" 42 0.509 A2 8" 6:1 3:1 4'-1'' 2'-1" 92 0.685 A3 6" 6:1 2:1 3'-0" V-2" 38 0.463 A3 8" 6:1 2:1 4'-l" P-6" 82 0.620 B1 6" 4:1 4:1 2'-l" 2'-1" 38 0.463 81 8" 4:1 4:1 1 2'-9" 2'-9" 82 0.611 B2 8" 4:1 3:1 2'-9" 2'-l" 72 0.537 B2 10.. 4:1 3:1 3'-5" 2'-8" 130 0.676 B3 B" 4:1 2:1 2'-9" 1'-6" 60 0.472 B3 10" 4:1 2:1 Y-5" T-10" 111 0.583 B4 8" 4:1 11 :1 2'-9" V-2" 55 0.435 B4 10" 4:1 11/z:1 3'-5" 1'-6" 101 0.546 C1 8" 3:1 2:1 2'-1" 1'-6" 50 0.398 C1 10" 3:1 2:1 2'-B" T-10" 92 0.500 C2 lo" 3:1 11/:1 2'-8" V-6" 80 0.463 C3 10.. 3:1 1 1:1 2'-8" V-2" 1 70 0.426 TYPE E 12" 2'-3" 2'-3" 0.500 o TA 4 K - 115 CURTAIN WALL DETAIL N4 DOWELS, 18" LONG 0 5" C-C SLOPE CURTAIN WALL TO BE LOCATED AT BEGINNING AN ENO OF ALL CHANNELS m AND ON THE LOWER END OF EACH " EXPANSION JOINT. CURTAIN WALL PLAN FOR TRANSITION OF PAVED MEDIAN DITCH TO MEDIAN DROP INLET GUTTER A 'EALTERNATE METHOD E---I L-3(01•W2) Bl OF FORMING DITCHES VERT CONSTRUCTION JOINT MEDIAN OPTION MEDIAN DROP INLET DROP SECTION D-D \/ RADIUS INVERT INLET GUTTER (FLAT BOTTOM) ppy LINE PPPROACH PAVED E�j MEDIAN DITCH D�j B(\ /� A-j � \/ NOTES: \/ NOTE: FOR SECTION A -A AND B-B SEE STANDARDS DI-7, 7A AND 7B. ALL DITCHES MAY BE TRADITIONAL PORTION OF PAVED DITCH TO BE PAID FOR AT THE SAME SECTION E-E CONSTRUCTED WITH VERTICAL PRICE BID PER SO. YARD FOR APPROACH PAVED MEDIAN DITCH. SIDES AT THE OPTION OF THE STANDARD PG-2A DITCHES TO BE CLASS A3 CONCRETE. CONTRACTOR. SPECIFICATION REFERENCE STANDARD PAVED DITCHES 502 VIRGINIA DEPARTMENT OF TRANSPORTATION REV.7/02 09.01 PYRAMID RACKS FOR CONCRETE PIPE PART NO. PIPE I.D. PIPE O.D. A B C PYD-24 24 30 33 1 2 12 1 2 15 344 PYD-36 36 44 43 12 1 2 19 1 4 PYD-48 48 58 57 12 1 2 20 1 4 PYD-60 60 72 68 1 2 12 1 2 20 1 2 PYD-72 72 86 84 18 27 1 2 PYD-84 84 100 94 1 2 18 32 1 2 PYD-96 96 114 113 23 39 1 2 LA, CUSTOMER: r11 INC. 400 PROJECT: PH; VA DEQ STORMWATER DESIGN SPECIFICATION NO. 12 N-3A, 38.3C -EXPANSION JOINT INLET 2_ 2016 ROAD & BRIDGE STANDARDS EXPANSION JOINTJ PYRAMID STRUCTURES (STANDARD SIZES) DIMENSIONS IN INCHES TO THE NEAREST 1/4" *AS DISTRIBUTED BY CONTECH CONSTRUCTION PRODUCTS NATIONALLY* HOST STRUCTURE INSIDE DIMENSIONS PART NUMBER: TYPE OF PIPE MOUNTING TO: INSIDE DIAMTER OF PIPE: PYRAMID RACKS FOR PLASTIC OR METAL PIPE VITDP RAQB NAME A MII✓11M 3-CfD ION m TO AcEmi owIm momm ID NDI PART NO. CORRUGATED HOPE A B" C. PYDP-24 12,15,18 12,15,18 331 2 18 21 4 PYDP-36 21,24,27,30 24,30 43 18 24 4PYDP-48 j 33,36,42 36,42 57 18 25 4 PYDP-60 48,54 48 68 1 2 18 26 PYDP-72 60.66 60 84 23 1 2 33 PYDP-84 72.78 N A 94 1 2 23 1 2 38 PYDP-96 84,90,96 N A 113 28 1 2 45 TRA SH RA CK DATE: DRAWN BY: 7- VOR TEX DE VICE APP'D BY: DETAIL: NUF %I 11 AM 'MIN 10'MAX. i� s= FILTERING PRACTICES BARS KEYED CONST. JOINT 12 WARPED 'N-- GUTTER = WEEP HOLE FRONT ELEVATION BARS F­ 6- 1'-6'• 6•-. ° (GUTTER REMOVED& NA.. Sx'/^ BExT PLATE a r SECTION B-B C R, TYPEA N TA WITH - -7 TM1N M LY "X2' "%' " NOSE DETAIL SHALL BE USED CC 3 M CC S D Di / / 2 } Ctt CALVANIZED __ } TYPE B NOSE DETAIL SHAL BE USED WITH LG-2 & LG-6 STMDMDS. TYPE' A TYPE B /¢ % 4" STUD SHEAR CONNECTOR WELDED CONVECTED PLATE FOR TYPE A i0 BE BENT ON AN ANGNE OF 68.30' i0 ANGLE IRON AT 2'C-C. CONNECTORS AND IS TO BE ANCHORED WITH %1" % 4" STUD SHEAR NOSE DETAILS WELDED TO BENT PLATE AT 2'C-C. 2 APPR. PAVEMENT 0I-3Ai L_ p-38 L q-JC L WARPED PAVEMENT I FLOW FLOW FLOW 1 D DETNL WHEN USED FOR USE ON GRADES ADJACENT TO CURB FOR USE IN SAGS WITHOUT GUTTER BOTH SEIES TO BE SYMMETRIC& ROAD AND BRD(O STANDARDS SPECIFICATION STANDARD CURB DROP INLET REFERENCE SHEET 1 OF 2 REVISION DATE 12" - 30" PIPE MAXIMUM DEPTH (H) - 8' z3J 104.09 O8,ID VIRGINIA DEPARTMENT OF TRANSPORTATION 302 2016 ROAD & BRIDGE STANDARDS zU F--i O Z O (o Q m N y D LOUoJ rn UU PC"8 IL 0 Old � o_ O U (I o 0 U Li n L Fnwn J Z J (113, OD Z CD U > Co p C7fr oTn� O> Z w Z O LLzO000 LL Z c) 0 O> TnQd o CO rn U CO Q 134fr yTH Op Christopher C. Mulligan Lic. No. 09/07/22 w4� OX,ESSI ONAL EGGS z O U) 0 Qz (moo J VJ J /off L L f) "V N W m W 1M�1 W z I-_ U U w 0 z O w tY m w 0 O z DRAFTER: SML DESIGNER: CCM PRODUCTION ZOD DATE: 01 APR 22 SCALE: N/A JOB: 487 SUB: 2022-000 SHEET: 220F 22