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HomeMy WebLinkAboutWPO202100058 Plan - VSMP 2021-10-12REFERENCES AND CONTACTS ♦ALTA/NSPS LAND TITLE SURVEY: BOHLER 1285 WORLDGATE DRIVE, SUITE 700 HERNDON, VA 20170 DATED: 08/05/19 JOB #SV1920796 ELEVATIONS: NAVD 1988 *ARCHITECTURAL PLAN: LORD AECK SARGENT 1450 RALEIGH ROAD, SUITE 109 CHAPEL HILL, NC 27517 GOVERNING AGENCIES *ALBEMARLE COUNTY SITE REVIEW COMMITTEE ALBEMARLE COUNTY, VA 401 MCINTIRE ROAD CHARLOTTESVILLE, VA 22902 PHONE: (434) 243-7929 UTILITIES *ALBEMARLE COUNTY SERVICE AUTHORITY 168 SPOTNAP ROAD CHARLOTTESVILLE, VA 22911 PHONE: (434) 977-4511 THE ABOVE REFERENCED DOCUMENTS ARE INCORPORATED BY REFERENCE AS PART OF THESE PLANS, HOWEVER, BOHLER ENGINEERING DOES NOT CERTIFY THE ACCURACY OF THE WORK REFERENCED OR DERIVED FROM THESE DOCUMENTS, BY OTHERS. GENERAL NOTE: IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO REVIEW ALL OF THE DRAWINGS AND SPECIFICATIONS ASSOCIATED WITH THIS PROJECT WORK SCOPE PRIOR TO THE INITIATION OF CONSTRUCTION. SHOULD THE CONTRACTOR FIND CONFLICT WITH THE DOCUMENTS RELATIVE TO THE SPECIFICATIONS OR APPLICABLE CODES, IT IS THE CONTRACTORS RESPONSIBILITY TO NOTIFY THE PROJECT ENGINEER OF RECORD IN WRITING PRIOR TO THE START OF CONSTRUCTION. FAILURE BY THE CONTRACTOR TO NOTIFY THE PROJECT ENGINEER SHALL CONSTITUTE ACCEPTANCE OF FULL RESPONSIBILITY BY THE CONTRACTOR TO COMPLETE THE SCOPE OF THE WORK AS DEFINED BY THE DRAWINGS AND IN FALL CONFORMANCE WITH LO(:AL REGIIIATIfwS ANO CODES. J VIRGINIA S TORMWA TER MANAGEMENT PLAN FOR RST RESIDENCES LOCATION OF SITE SEMINOLE TRAIL AND ASHWOOD BOULEVARD ALBEMARLE COUNTY, VIRGINIA CU PARCEL ID 04600-00-00-10900 �b ealord Hxs mac' i P, Ems° ikc w� e" t Templeton goes eoav'O �,ee rie ihY E �, e m. �n 3 e .9 0ntw°0 TimbervaW Pkwy r R,es In f Hollym'n' i Elemenury prye scn°ul mo" me, NnwpOa rsuehe,lana Mmme schml 4n9�' '�nwamered; +f R f Ml� m ®2W 1 Microsoft COrpc2lim 02021 TgnTOm LOCATION MAP SCALE: 1" = 2,000' Copyright: MICROSOFT CORPORATION OWNERIDEVELOPER RST DEVELOPMENT, LLC. 168 BUSINESS PARK DR, SUITE 200 VIRGINIA BEACH, VA 23462 DEVELOPER CONTACT: ALEX MAYS DEVELOPER PHONE: (202) 498-0317 PREPARED BY HLER// CONTACT: RYAN T. YAUGER, P.E. SHEETINDEX SHEET TITLE SHEET NUMBER COVER SHEET C-101 GENERAL NOTES C-102 GENERAL NOTES AND LEGEND C-103 OVERALL EROSION AND SEDIMENT CONTROL PHASE I C-600 EROSION AND SEDIMENT CONTROL PLAN PHASE I C-601 - C-604 OVERALL EROSION AND SEDIMENT CONTROL PHASE II G-610 EROSION AND SEDIMENT CONTROL PLAN PHASE II C-611 - C-614 EROSION NOTES C-615 EROSION DETAILS C-616 - C-617 SEDIMENT TRAP AND BASIN DETAILS C-618 POLLUTION PREVENTION PLAN C-619 PRE DEVELOPMENT DRAINAGE AREA MAP C-901 POST DEVELOPMENT DRAINAGE AREA MAP C-902 STORMWATER COMPLIANCE SHEET C-903 - C-906 STORMWATER BMP DETAILS C-907 - C-908 TOTAL SHEET COUNT 26 It J 0 m r, z EE W UU W U z W f7 Zjz(UU Z W H U W j 0zWW��W zrc9toW>m aF W Q 2 W Z i>zU<4��aQWZQ0 z 0zcn�aw Q< Q J W0 U) W Z Z (L Q > a < of U W H REVISIONS REV I DATE I COMMENT 15 Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: SDP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLER// 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 10/07/2021 SHEET TITLE: COVER SHEET SHEET NUMBER: C-101 ORG. DATE - 10/7/2021 GENERAL NOTES (Rev. 22021) 1. THESE PLANS ARE SOLELY BASED ON INFORMATION THE OWNER AND OTHERS PROVIDED TO BOHLER ENGINEERING, VIRGINIA (HEREIN "BOHLER-) PRIOR TO THE DATE ON WHICH THE ENGINEER OF RECORD AND BOHLER PREPARED THESE PLANS. THE CONTRACTOR MUST FIELD VERIFY ALL EXISTING CONDITIONS AND IMMEDIATELY NOTIFY BOHLER, IN WRITING, IF ANY ACTUAL SITE CONDITIONS DIFFER FROM THOSE SHOWN ON THESE PLANS, OR IF THE PROPOSED WORK CONFLICTS WITH ANY OTHER SITE FEATURES. 2. THE CONTRACTOR MUST STRICTLY COMPLY WITH THESE NOTES AND ALL SPECIFICATIONSIREPORTS CONTAINED HEREIN. THE CONTRACTOR MUST ENSURE THAT ALLSUBCONTRACTORSFULLY AND COMPLETELY CONFORM TO AND COMPLY WITH THESE REQUIREMENTS,THESE NOTES, AND THE REQUIREMENTS ARTICULATED IN THE NOTES CONTAINED IN ALL THE OTHER DRAWINGS THAT COMPRISE THE PLAN SET OF DRAWINGS. ADDITIONAL NOTES AND SPECIFIC PLAN NOTES MAY BE FOUND ON THE INDIVIDUAL PLANS. THESE GENERAL NOTES APPLY TO THIS ENTIRE DOCUMENT PACKAGE. IT IS THE CONTRACTOR'S RESPONSIBILITY TO REVIEW ALL CONSTRUCTION CONTRACT DOCUMENTS INCLUDING, BUT NOT LIMITED TO, ALL OF THE DRAWINGS AND SPECIFICATIONS ASSOCIATED WITH THE PROJECT WORK SCOPE, PRIOR TO THE INITIATION AND COMMENCEMENT OF CONSTRUCTION. 3. PRIOR TO THE COMMENCEMENT OF CONSTRUCTION, THE CONTRACTOR MUST CONFIRM WITH THE ENGINEER OF RECORD AND BOHLER THAT THE LATEST EDITION OF THE DOCUMENTS AND/OR REPORTS REFERENCED WITHIN THE PLAN REFERENCES ARE BEING USED FOR CONSTRUCTION. THIS IS THE CONTRACTOR'S SOLE AND COMPLETE RESPONSIBILITY. 4. PRIOR TO THE COMMENCEMENT OF CONSTRUCTION, THE CONTRACTOR MUST ENSURE THAT ALL REQUIRED PERMITS AND APPROVALS HAVE BEEN OBTAINED. NO CONSTRUCTION OR FABRICATION IS TO BEGIN UNTIL THE CONTRACTOR HAS RECEIVED AND THOROUGHLY REVIEWED THE CONDITIONS OF APPROVAL TO ALL PLANS AND OTHER DOCUMENTS REVIEWED AND APPROVED BY THE PERMITTING AUTHORITIES AND HAS ALSO CONFIRMED THAT ALL NECESSARY AND REQUIRED PERMITS HAVE BEEN OBTAINED. THE CONTRACTOR MUST HAVE COPIES OF ALL PERMITS AND APPROVALS ON SITE AT ALL TIMES. 5. THE CONTRACTOR MUST ENSURE THAT ALL WORK IS PERFORMED IN ACCORDANCE WITH THESE PLANS, SPECIFICATIONSIREPORTS AND CONDITIONS OF APPROVAL, AND ALL APPLICABLE REQUIREMENTS, RULES, REGULATIONS, STATUTORY REQUIREMENTS, CODES, LAWS AND STANDARDS OF ALL GOVERNMENTAL ENTITIES WITH JURISDICTION OVER THIS PROJECT, AND ALL PROVISIONS IN AND CONDITIONS OF THE CONSTRUCTION CONTRACT WTH THE OWNERIDEVELOPER INCLUDING ALL EXHIBITS,ATTACHMENTS AND ADDENDA TO SAME. 6. PRIOR TO THE COMMENCEMENT OF CONSTRUCTION, THE CONTRACTOR MUST COORDINATE THE BUILDING LAYOUT BY CAREFULLY REVIEWING THE MOST CURRENT ARCHITECTURAL, CIVIL AND STRUCTURAL CONSTRUCTION DOCUMENTS (INCLUDING, BUT NOT LIMITED TO, MECHANICAL, ELECTRICAL, PLUMBING AND FIRE SUPPRESSION PLANS, WHERE APPLICABLE). THE CONTRACTOR MUST IMMEDIATELY NOTIFY OWNER, ARCHITECT AND ENGINEER OF RECORD AND BOHLER, IN WRITING, OF ANY CONFLICTS, DISCREPANCIES OR AMBIGUITIES WHICH EXIST BETWEEN THESE PLANS AND ANY OTHER PLANS THAT COMPRISE THE CONSTRUCTION DOCUMENTS. 7. CONTRACTOR MUST REFER TO AND ENSURE COMPLIANCE WITH THE APPROVED ARCHITECTURALBUILDING PLANS OF RECORD FOR EXACT LOCATIONS AND DIMENSIONS OF ENTRYBXIT POINTS, ELEVATIONS, PRECISE BUILDING DIMENSIONS, AND EXACT BUILDING UTILITY LOCATIONS. 8. THE CONTRACTOR MUST FIELD VERIFY ALL DIMENSIONS AND MEASUREMENTS SHOWN ON THESE PLANS, PRIOR TO THE COMMENCEMENT OF CONSTRUCTION. THE CONTRACTOR MUST IMMEDIATELY NOTIFY ENGINEER OF RECORD AND BOHLER, IN WRITING, IF ANY CONFLICTS, DISCREPANCIES, OR AMBIGUITIES EXIST PRIOR TO PROCEEDING WITH CONSTRUCTION. NO EXTRA COMPENSATION WILL BE PAID TO THE CONTRACTOR FOR WORK WHICH HAS TO BE RE -DONE OR REPAIRED DUE TO DIMENSIONS, MEASUREMENTS OR GRADES SHOWN INCORRECTLY ON THESE PLANS PRIOR TO BOTH (A) THE CONTRACTOR GIVING ENGINEER OF RECORD AND BOHLER WRITTEN NOTIFICATION OF SAME AND (B) ENGINEER OF RECORD AND BOHLER, THEREAFTER, PROVIDING THE CONTRACTOR WITH WRITTEN AUTHORIZATION TO PROCEED WITH SUCH ADDITIONAL WORK. 9. THE CONTRACTOR MUST VERIFY ALL DIMENSIONS AND MEASUREMENTS INCLUDED ON DESIGN DOCUMENTS HEREIN AND MUST NOT SCALE OFF THE DRAWINGS DUE TO POTENTIAL PRINTING INACCURACIES. ALL DIMENSIONS AND MEASUREMENTS ARE TO BE CHECKED AND CONFIRMED BY THE GENERAL CONTRACTOR PRIOR TO PREPARATION OF SHOP DRAWINGS, FABRICATION/ORDERING OF PARTS AND MATERIALS AND COMMENCEMENT OF SITE WORK. SITE PLAN DRAWINGS ARE NOT INTENDED AS SURVEY DOCUMENTS. DIMENSIONS SUPERSEDE GRAPHICAL REPRESENTATIONS. THE CONTRACTOR MUST MAKE CONTRACTOR'S OWN MEASUREMENTS FOR LAYOUT OF IMPROVEMENTS. 10. THE OWNER AND CONTRACTOR MUST BE FAMILIAR WITH AND RESPONSIBLE FOR THE PROCUREMENT OF ANY AND ALL CERTIFICATIONS REQUIRED FOR THE ISSUANCE OF A CERTIFICATE OF OCCUPANCY. 11. WHEN INCLUDED AS ONE OF THE REFERENCED DOCUMENTS, THE GEOTECHNICAL REPORT, SPECIFICATIONS AND RECOMMENDATIONS SET FORTH THEREIN ARE A PART OF THE REQUIRED CONSTRUCTION DOCUMENTS AND, IN CASE OF CONFLICT, DISCREPANCY OR AMBIGUITY, THE MORE STRINGENT REQUIREMENTS AND/OR RECOMMENDATIONS CONTAINED IN: (A) THE PLANS; AND (B) THE GEOTECHNICAL REPORT AND RECOMMENDATIONS, MUST TAKE PRECEDENCE UNLESS SPECIFICALLY NOTED OTHERWISE ON THE PLANS. THE CONTRACTOR MUST NOTIFY THE ENGINEER OF RECORD AND BOHLER, IN WRITING, OF ANY SUCH CONFLICT, DISCREPANCY OR AMBIGUITY BETWEEN THE GEOTECHNICAL REPORT AND PLANS AND SPECIFICATIONS, PRIOR TO PROCEEDING WITH ANY FURTHER WORK. IF A GEOTECHNICAL REPORT WAS NOT CREATED, THEN THE CONTRACTOR MUST FOLLOW AND COMPLY WITH ALL OF THE REQUIREMENTS OF ANY AND ALL MUNICIPAL, COUNTY, STATE, AND FEDERAL LAWS AND APPLICABLE SPECIFICATIONS WHICH HAVE JURISDICTION OVER THIS PROJECT. 12. ENGINEER OF RECORD AND BOHLER ARE NEITHER LIABLE NOR RESPONSIBLE FOR ANY SUBSURFACE CONDITIONS AND FURTHER, HAS NO LIABILITY FOR ANY HAZARDOUS MATERIALS, HAZARDOUS SUBSTANCES, OR POLLUTANTS ON, ABOUT OR UNDER THE PROPERTY. 13. THE CONTRACTOR IS RESPONSIBLE FOR IDENTIFYING WHEN AND WHERE SHORING IS REQUIRED AND FOR INSTALLING ALL SHORING REQUIRED DURING EXCAVATION (TO BE PERFORMED IN ACCORDANCE WITH CURRENT OSHA STANDARDS) AND ANY ADDITIONAL PRECAUTIONS TO BE TAKEN TO ASSURE THE STABILITY OF ADJACENT, NEARBY AND CONTIGUOUS STRUCTURES AND PROPERTIES. ALL OF THIS WORK IS TO BE PERFORMED AT CONTRACTOR'S SOLE COST AND EXPENSE. 14. THE CONTRACTOR MUST EXERCISE EXTREME CAUTION WHEN PERFORMING ANY WORK ACTIVITIES ADJACENT TO PAVEMENT, STRUCTURES, ETC. WHICH ARE TO REMAIN EITHER FOR AN INITIAL PHASE OF THE PROJECT OR AS PART OF THE FINAL CONDITION. THE CONTRACTOR IS RESPONSIBLE FOR TAKING ALL APPROPRIATE MEASURES REQUIRED TO ENSURE THE STRUCTURAL STABILITY OF SIDEWALKS AND PAVEMENT, UTILITIES, BUILDINGS, AND INFRASTRUCTURE WHICH ARE TO REMAIN, AND TO PROVIDE A SAFE WORK AREA FOR THIRD PARTIES, PEDESTRIANS AND ANYONE INVOLVED WITH THE PROJECT. 15. DEBRIS MUST NOT BE BURIED ON THE SUBJECT SITE. ALL DEMOLITION AND CONSTRUCTION WASTES, UNSUITABLE EXCAVATED MATERIAL, EXCESS SOIL AND DEBRIS (SOLID WASTE) MUST BE DISPOSED OF IN ACCORDANCE WITH THE REQUIREMENTS OF ANY AND ALL MUNICIPAL, COUNTY, STATE, AND FEDERAL LAWS AND APPLICABLE CODES WHICH HAVE JURISDICTION OVER THIS PROJECT OR OVER THE CONTRACTOR. 16. IT IS THE CONTRACTOR'S SOLE RESPONSIBILITY TO MAINTAIN RECORDS TO DEMONSTRATE PROPER AND FULLY COMPLIANT DISPOSAL ACTIVITIES, TO BE PROMPTLY PROVIDED TO THE OWNER UPON REQUEST. 17. THE CONTRACTOR MUST REPAIR, AT CONTRACTOR'S SOLE COST, ALL DAMAGE DONE TO ANY NEW OR EXISTING CONSTRUCTION OR PROPERTY DURING THE COURSE OF CONSTRUCTION, INCLUDING BUT NOT LIMITED TO DRAINAGE, UTILITIES, PAVEMENT, STRIPING, CURB, ETC. AND MUST BEAR ALL COSTS ASSOCIATED WITH SAME TO INCLUDE, BUT NOT BE LIMITED TO, REDESIGN, RE -SURVEY, RE -PERMITTING AND CONSTRUCTION. THE CONTRACTOR IS RESPONSIBLE FOR AND MUST REPLACE ALL SIGNAL INTERCONNECTION CABLE, WIRING CONDUITS, AND ANY UNDERGROUND ACCESSORY EQUIPMENT DAMAGED DURING CONSTRUCTION AND MUST BEAR ALL COSTS ASSOCIATED WITH SAME. THE REPAIR OF ANY SUCH NEW OR EXISTING CONSTRUCTION OR PROPERTY MUST RESTORE SUCH CONSTRUCTION OR PROPERTY TO A CONDITION EQUIVALENT TO OR BETTER THAN THE CONDITIONS PRIOR TO COMMENCEMENT OF THE CONSTRUCTION, AND IN CONFORMANCE WITH APPLICABLE CODES, LAWS, RULES, REGULATIONS, STATUTORY REQUIREMENTS AND STATUTES. THE CONTRACTOR MUST BEAR ALL COSTS ASSOCIATED WITH SAME. THE CONTRACTOR MUST, PROMPTLY, DOCUMENT ALL EXISTING DAMAGE AND NOTIFY, IN WRITING, THE OWNER AND THE CONSTRUCTION MANAGER PRIOR TO THE START OF CONSTRUCTION. 18. THE ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE FOR AND HAVE NO CONTRACTUAL, LEGAL OR OTHER RESPONSIBILITIES FOR JOB SITE SAFETY JOB SITE SUPERVISION, OR ANYTHING RELATED TO SAME. THE ENGINEER OF RECORD AND BOHLER HAVE NOT BEEN RETAINED TO PERFORM OR TO BE RESPONSIBLE FOR JOB SITE SAFETY, SAME BEING WHOLLY OUTSIDE OF ENGINEER OF RECORDS AND BOHLER SERVICES AS RELATED TO THE PROJECT. THE ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE TO IDENTIFY OR REPORT ANY JOB SITE SAFETY ISSUES OR ANY JOB SITE CONDITIONS, AT ANY TIME. 19. THE CONTRACTOR MUST IMMEDIATELY IDENTIFY IN WRITING, TO THE ENGINEER OF RECORD AND BOHLER, ANY DISCREPANCIES THAT MAY OR COULD AFFECT THE PUBLIC SAFETY, HEALTH OR GENERAL WELFARE, OR PROJECT COST. IF THE CONTRACTOR PROCEEDS WITH CONSTRUCTION WITHOUT PROVIDING PROPER WRITTEN NOTIFICATION AS DESCRIBED ABOVE, IT WILL BE AT THE CONTRACTOR'S OWN RISK AND, FURTHER, THE CONTRACTOR MUST INDEMNIFY, DEFEND AND HOLD HARMLESS THE ENGINEER OF RECORD AND BOHLER FOR ANY AND ALL DAMAGES, COSTS, INJURIES, ATTORNEY'S FEES AND THE LIKE WHICH RESULT FROM OR ARE IN ANY WAY RELATED TO SAME INCLUDING, BUT NOT LIMITED TO, ANY THIRD PARTY AND FIRST PARTY CLAIMS. 20. THE ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE FOR ANY INJURY OR DAMAGES RESULTING FROM THE CONTRACTOR'S FAILURE TO BUILD OR CONSTRUCT IN STRICT ACCORDANCE WITH THE APPROVED PLANS, AND CURRENT CODES, RULES, STATUTES AND THE LIKE. IF THE CONTRACTOR AND/OR OWNER FAIL TO BUILD OR CONSTRUCT IN STRICT ACCORDANCE WITH APPROVED PLANS, RULES, STATUTES, CODES AND THE LIKE, THE CONTRACTOR AND/OR OWNER AGREE TO AND MUST JOINTLY, INDEPENDENTLY, SEPARATELY, AND SEVERALLY INDEMNIFY AND HOLD THE ENGINEER OF RECORD AND BOHLER HARMLESS FOR AND FROM ALL INJURIES, CLAIMS AND DAMAGES THAT ENGINEER AND BOHLER SUFFER AND ANY AND ALL COSTS THAT ENGINEER AND BOHLER INCUR AS RELATED TO SAME. 21. ALL CONTRACTORS MUST CARRY AT LEAST THE MINIMUM AMOUNT OF THE SPECIFIED AND COMMERCIALLY REASONABLE STATUTORY WORKER'S COMPENSATION INSURANCE, EMPLOYER'S LIABILITY INSURANCE AND COMMERCIAL GENERAL LIABILITY INSURANCE (CGL) INCLUDING ALSO ALL UMBRELLA COVERAGES. ALL CONTRACTORS MUST HAVE THEIR CGL POLICIES ENDORSED TO NAME BOHLER, AND ITS PAST, PRESENT AND FUTURE OWNERS, OFFICERS, DIRECTORS, PARTNERS, SHAREHOLDERS, MEMBERS, PRINCIPALS, COMMISSIONERS, AGENTS, SERVANTS, EMPLOYEES, AFFILIATES, SUBSIDIARIES, AND RELATED ENTITIES, AND ITS SUBCONTRACTORS AND SUBCONSULTANTS AS ADDITIONAL NAMED INSUREDS AND TO PROVIDE CONTRACTUAL LIABILITY COVERAGE SUFFICIENT TO INSURE (DEFEND, IF APPLICABLE) AND HOLD HARMLESS AND INDEMNITY OBLIGATIONS ASSUMED AND AGREED TO BY THE CONTRACTOR HEREIN. ALL CONTRACTORS MUST FURNISH BOHLER WITH CERTIFICATIONS OF INSURANCE OR CERTIFICATES OF INSURANCE AS EVIDENCE OF THE REQUIRED INSURANCE COVERAGES PRIOR TO COMMENCING ANY WORKAND UPON RENEWAL OF EACH POLICY DURING THE ENTIRE PERIOD OF CONSTRUCTION AND FOR TWO YEARS AFTER THE COMPLETION OF CONSTRUCTION AND AFTER ALL PERMITS ARE ISSUED, WHICHEVER DATE IS LATER. IN ADDITION, ALL CONTRACTORS AGREE THAT THEY WILL, TO THE FULLEST EXTENT PERMITTED UNDER THE LAW, INDEMNIFY, DEFEND AND HOLD HARMLESS BOHLER AND ITS PAST, PRESENT AND FUTURE OWNERS, OFFICERS, DIRECTORS, PARTNERS, SHAREHOLDERS, MEMBERS, PRINCIPALS, COMMISSIONERS, AGENTS, SERVANTS, EMPLOYEES, AFFILIATES, SUBSIDIARIES, AND RELATED ENTITIES, AND ITS SUBCONTRACTORS AND SUBCONSULTANTS FROM AND AGAINST ANY DAMAGES, INJURIES, CLAIMS, ACTIONS, PENALTIES, EXPENSES, PUNITIVE DAMAGES, TORT DAMAGES, STATUTORY CLAIMS, STATUTORY CAUSES OF ACTION, LOSSES, CAUSES OF ACTION, LIABILITIES OR COSTS, INCLUDING, BUT NOT LIMITED TO, REASONABLE ATTORNEYS' FEES AND DEFENSE COSTS, ARISING OUT OF OR IN ANY WAY CONNECTED WITH OR TO THE PROJECT, INCLUDING ALL CLAIMS BY EMPLOYEES OF THE CONTRACTOR(S), ALL CLAIMS BY THIRD PARTIES AND ALL CLAIMS RELATED TO THE PROJECT. THE CONTRACTOR MUST NOTIFY ENGINEER, IN WRITING, AT LEAST THIRTY (30) DAYS PRIOR TO ANY TERMINATION, SUSPENSION OR CHANGE OF ITS INSURANCE HEREUNDER. 22. THE ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE FOR CONSTRUCTION METHODS, MEANS, TECHNIQUES OR PROCEDURES, GENERALLY OR FOR THE CONSTRUCTION MEANS, METHODS, TECHNIQUES OR PROCEDURES FOR COMPLETION OF THE WORK DEPICTED BOTH ON THESE PLANS, AND FOR ANY CONFLICTS IN SCOPE AND REVISIONS THAT RESULT FROM SAME. THE CONTRACTOR IS FULLY AND SOLELY RESPONSIBLE FOR DETERMINING THE MEANS AND METHODS FOR COMPLETION OF THE WORK, PRIOR TO THE COMMENCEMENT OF CONSTRUCTION. 23. NEITHER THE PROFESSIONAL ACTIVITIES OF BOHLER, NOR THE PRESENCE OF BOHLER AND/OR ITS PAST, PRESENT AND FUTURE OWNERS, OFFICERS, DIRECTORS, PARTNERS, SHAREHOLDERS, MEMBERS, PRINCIPALS, COMMISSIONERS, AGENTS, SERVANTS, EMPLOYEES, AFFILIATES, SUBSIDIARIES, AND RELATED ENTITIES, AND ITS SUBCONTRACTORS AND SUBCONSULTANTS AT A CONSTRUCTION/PROJECT SITE (HEREIN "BOHLER PARTIES"), RELIEVES OR WILL RELIEVE THE CONTRACTOR OF AND FROM CONSTRUCTION MEANS, METHODS, SEQUENCE, TECHNIQUES OR PROCEDURES NECESSARY FOR PERFORMING, OVERSEEING, SUPERINTENDING AND COORDINATING THE WORK IN ACCORDANCE WITH THE CONTRACT DOCUMENTS AND COMPLIANCE WITH ALL HEALTH AND SAFETY PRECAUTIONS REQUIRED BY ANY REGULATORY AGENCIES WITH JURISDICTION OVER THE PROJECT AND/OR PROPERTY. BOHLER PARTIES HAVE NO AUTHORITY TO EXERCISE ANY CONTROL OVER (OR ANY RESPONSIBILITY FOR) ANY CONSTRUCTION, THE CONTRACTOR OR ITS EMPLOYEES RELATING TO THEIR WORK AND ANY AND ALL HEALTH AND SAFETY PROGRAMS OR PROCEDURES. THE CONTRACTOR IS SOLELY RESPONSIBLE FOR JOB SITE SAFETY. THE CONTRACTOR MUST INDEMNIFY, DEFEND, PROTECT AND HOLD HARMLESS BOHLER PARTIES FOR AND FROM ANY LIABILITY TO BOHLER PARTIES RESULTING FROM THE CONTRACTOR'S WORK, SERVICES AND/OR VIOLATIONS OF THIS NOTE, THESE NOTES OR ANY NOTES IN THE PLAN SET AND, FURTHER, THE CONTRACTOR MUST NAME BOHLER AS AN ADDITIONAL INSURED UNDER THE GENERAL CONTRACTOR'S POLICIES OF GENERAL LIABILITY INSURANCE AS DESCRIBED ABOVE. 24. WHEN IT IS CLEARLY AND SPECIFICALLY WITHIN BOHLER'S SCOPE OF SERVICES CONTRACT WITH THE OWNER/DEVELOPER, BOHLER WILL REVIEW OR TAKE OTHER APPROPRIATE ACTION ON THE CONTRACTOR SUBMITTALS, SUCH AS SHOP DRAWINGS, PRODUCT DATA, SAMPLES, AND OTHER DATA, WHICH THE CONTRACTOR IS REQUIRED TO SUBMIT, BUT ONLY FOR THE LIMITED PURPOSE OF EVALUATING CONFORMANCE WITH THE DESIGN INTENT AND THE INFORMATION SHOWN IN THE CONSTRUCTION CONTRACT DOCUMENTS. CONSTRUCTION MEANS AND METHODS AND/OR TECHNIQUES OR PROCEDURES, COORDINATION OF THE WORK WITH OTHER TRADES, AND CONSTRUCTION SAFETY PRECAUTIONS ARE THE SOLE RESPONSIBILITY OF THE CONTRACTOR AND BOHLER HAS NO RESPONSIBILITY OR LIABILITY FOR SAME. BOHLER WILL PERFORM ITS SHOP DRAWING REVIEW WITH REASONABLE PROMPTNESS, AS CONDITIONS PERMIT. ANY DOCUMENT, DOCUMENTING BOHLER'S REVIEW OF A SPECIFIC ITEM OR LIMITED SCOPE, MUST NOT INDICATE THAT BOHLER HAS REVIEWED THE ENTIRE ASSEMBLY OF WHICH THE ITEM IS A COMPONENT. BOHLER IS NOT RESPONSIBLE FOR ANY DEVIATIONS FROM THE CONSTRUCTION DOCUMENTS. THE CONTRACTOR MUST, IN WRITING, PROMPTLY AND IMMEDIATELY BRING ANY DEVIATIONS FROM THE CONSTRUCTION DOCUMENTS TO BOHLER'S ATTENTION. BOHLER IS NOT REQUIRED TO REVIEW PARTIAL SUBMISSIONS OR THOSE FOR WHICH SUBMISSIONS OF CORRELATED ITEMS HAVE NOT BEEN RECEIVED. 25. IF THE CONTRACTOR DEVIATES FROM THESE PLANS AND/OR SPECIFICATIONS, INCLUDING THE NOTES CONTAINED HEREIN, WITHOUT FIRST OBTAINING THE PRIOR WRITTEN AUTHORIZATION OF THE ENGINEER OF RECORD AND BOHLER FOR ALL DEVIATIONS WITHIN ENGINEER'S SCOPE, THE CONTRACTOR IS SOLELY RESPONSIBLE FOR THE PAYMENT OF ALL COSTS INCURRED IN CORRECTING ANY WORK PERFORMED WHICH DEVIATES FROM THE PLANS, ALL FINES AND/OR PENALTIES ASSESSED WITH RESPECT THERETO AND ALL COMPENSATORY OR PUNITIVE DAMAGES RESULTING THEREFROM AND, FURTHER, MUST DEFEND, INDEMNIFY, PROTECT, AND HOLD HARMLESS THE ENGINEER OF RECORD AND BOHLER PARTIES TO THE FULLEST EXTENT PERMITTED UNDER THE LAW, FOR AND FROM ALL FEES, ATTORNEYS' FEES, DAMAGES, COSTS, JUDGMENTS, CLAIMS, INJURIES, PENALTIES AND THE LIKE RELATED TO SAME. 26. THE CONTRACTOR IS RESPONSIBLE FOR A MAINTAINING AND PROTECTING THE TRAFFIC CONTROL PLAN AND ELEMENTS IN ACCORDANCE WITH FEDERAL, STATE, AND LOCAL REQUIREMENTS, FOR ALL WORK THAT AFFECTS PUBLIC TRAVEL EITHER IN THE RIGHT OF WAY OR ON SITE. THE COST FOR THIS ITEM MUST BE INCLUDED IN THE CONTRACTOR'S PRICE AND IS THE CONTRACTOR'S SOLE RESPONSIBILITY. 27. OWNER MUST MAINTAIN AND PRESERVE ALL PHYSICAL SITE FEATURES AND DESIGN FEATURES DEPICTED ON THE PLANS AND RELATED DOCUMENTS IN STRICT ACCORDANCE WITH THE APPROVED PLAN(S) AND DESIGN; AND, FURTHER, THE ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE FOR ANY FAILURE TO SO MAINTAIN OR PRESERVE SITE AND/OR DESIGN FEATURES. IF OWNER FAILS TO MAINTAIN AND/OR PRESERVE ALL PHYSICAL SITE FEATURES AND/OR DESIGN FEATURES DEPICTED ON THE PLANS AND RELATED DOCUMENTS, OWNER AGREES TO INDEMNIFY AND HOLD THE ENGINEER OF RECORD AND BOHLER PARTIES, HARMLESS FOR ALL INJURIES, DAMAGES AND COSTS THAT ENGINEER OF RECORD AND BOHLER INCUR AS A RESULT OF SAID FAILURE OR FAILURE TO PRESERVE. 28. THE CONTRACTOR IS SOLELY RESPONSIBLE FOR ENSURING THAT ALL CONSTRUCTION ACTIVITIES AND MATERIALS COMPLY WITH AND CONFORM TO APPLICABLE FEDERAL, STATE AND LOCAL RULES AND REGULATIONS, LAWS, ORDINANCES, AND CODES, AND ALL APPLICABLE REQUIREMENTS OF THE OCCUPATIONAL SAFETY AND HEALTH ACT OF 1970, (29 U.S.C. 651 ET SEQ.) AS AMENDED, AND ANY MODIFICATIONS, AMENDMENTS OR REVISIONS TO SAME. 29. THE CONTRACTOR MUST STRICTLY COMPLY WITH THE LATEST AND CURRENT OSHA STANDARDS AND REGULATIONS, AND/OR ANY OTHER AGENCY WITH JURISDICTION OVER EXCAVATION AND TRENCHING PROCEDURES. ENGINEER OF RECORD AND BOHLER HAS NO RESPONSIBILITY FOR OR AS RELATED TO EXCAVATION AND TRENCHING PROCEDURES AND WORK. 30. THE CONTRACTOR AND THE OWNER MUST INSTALL ALL ELEMENTS AND COMPONENTS IN STRICT COMPLIANCE WITH AND IN ACCORDANCE WITH MANUFACTURER'S STANDARDS AND RECOMMENDED INSTALLATION CRITERIA AND SPECIFICATIONS. IF THE CONTRACTOR AND/OR OWNER FAIL TO DO SO, THEY AGREE TO JOINTLY, INDEPENDENTLY, SEPARATELY, COLLECTIVELY, AND SEVERALLY INDEMNIFY, DEFEND, PROTECT AND HOLD ENGINEER OF RECORD AND BOHLER PARTIES HARMLESS FOR ALL INJURIES AND DAMAGES THAT ENGINEER SUFFERS AND COSTS THAT ENGINEER INCURS AS A RESULT OF SAID FAILURE. 31. THE CONTRACTOR IS RESPONSIBLE TO MAINTAIN AN ON -SITE STORMWATER POLLUTION PREVENTION PLAN (SWPPP) IN COMPLIANCE WITH THE ENVIRONMENTAL PROTECTION AGENCY (EPA) REQUIREMENTS OR LOCAL GOVERNING AGENCY FOR SITES WHERE ONE (1) ACRE OR MORE IS DISTURBED BY CONSTRUCTION ACTIVITIES (UNLESS THE LOCAL JURISDICTION REQUIRES A DIFFERENT THRESHOLD). THE CONTRACTOR MUST ENSURE THAT ALL ACTIVITIES, INCLUDING THOSE OF ALL SUBCONTRACTORS, ARE IN COMPLIANCE WITH THE SWPPP, INCLUDING BUT NOT LIMITED TO LOGGING ACTIVITIES (MINIMUM ONCE PER WEEK AND AFTER RAINFALL EVENTS) AND CORRECTIVE MEASURES, AS APPROPRIATE AND FURTHER, THE CONTRACTOR IS SOLELY AND COMPLETELY RESPONSIBLE FOR FAILING TO DO SO. 32. AS CONTAINED IN THESE DRAWINGS AND ASSOCIATED DOCUMENTS PREPARED BY THE ENGINEER OF RECORD AND BOHLER, THE USE OF THE WORDS'CERTIFY' OR'CERTIFICATION' CONSTITUTE(S) AN EXPRESSION ONLY OF PROFESSIONAL OPINION REGARDING THE INFORMATION WHICH IS THE SUBJECT OF THE ENGINEER OF RECORD's AND BOHLER KNOWLEDGE OR BELIEF AND IN ACCORDANCE WITH COMMON AND ACCEPTED PROCEDURE CONSISTENT WITH THE APPLICABLE STANDARDS OF PRACTICE, AND DOES NOT CONSTITUTE A WARRANTY OR GUARANTEE OF ANY NATURE OR TYPE, EITHER EXPRESSED OR IMPLIED, UNDER ANY CIRCUMSTANCES. SOIL EROSION & SEDIMENT CONTROL PLAN NOTES (Rev. 12020) 1. THE GENERAL NOTES MUST BE INCLUDED AS PART OF THIS ENTIRE DOCUMENT PACKAGE AND ARE PART OF THE CONTRACT DOCUMENTS. THE GENERAL NOTES ARE REFERENCED HEREIN, AND THE CONTRACTOR MUST REFER TO THEM AND FULLY COMPLY WTH THESE NOTES, IN THEIR ENTIRETY. THE CONTRACTOR MUST BE FAMILIAR WITH AND ACKNOWLEDGE FAMILIARITY WITH ALL OF THE GENERAL NOTES AND ALL OF THE PLANS' SPECIFIC NOTES. 2. EROSION CONTROL MEASURES MUST CONFORM TO THE VIRGINIA GUIDELINES FOR URBAN EROSION AND SEDIMENT CONTROL UNLESS OTHERWISE NOTED, OR UNLESS ENGINEER CLEARLY AND SPECIFICALLY, IN WRITING, DIRECTS OTHERWISE. INSTALLATION OF EROSION CONTROL, CLEARING, AND SITE WORK MUST BE PERFORMED EXACTLY AS INDICATED IN THE EROSION CONTROL CONSTRUCTION NOTES. 3. THE DISTURBED LAND AREA OF THIS SITE IS APPROXIMATELY 18.55ACRES. 4. THE FOLLOWING EROSION CONTROL MEASURES ARE PROPOSED FOR THIS SITE: A STABILIZED CONSTRUCTION ENTRANCE/ EXIT -A TEMPORARY GRAVEL CONSTRUCTION ENTRANCEIEXIT IS TO BE INSTALLED AT THE DESIGNATED LOCATION SHOWN ON THE PLAN. THIS AREA MUST BE GRADED SO THAT RUNOFF WATER WILL BE RETAINED ON -SITE. B. SEDIMENT FENCE- INSTALL SILT FENCE(S) AND/OR SILT SOCK AROUND ALL OF THE DOWNSLOPE PERIMETERS OF THE SITE, TEMPORARY FILL AND SOIL STOCKPILES. C. INSTALL FILTER FABRIC DROP INLET PROTECTION AROUND EACH DRAINAGE INLET AS DRAINAGE STRUCTURES ARE INSTALLED TO REDUCE THE QUANTITY OF SEDIMENT. INSTALL TEMPORARY INLET PROTECTION ON INLETS DOWNSLOPE FROM DISTURBANCE, WHICH MAY BE BEYOND THE LIMITS OF DISTURBED AREA. 5. INSTALLATION OF EROSION CONTROL DEVICES MUST BE IN ACCORDANCE WITH ALL OF THE MANUFACTURER'S RECOMMENDATIONS. 6. THE CONTRACTOR MUST INSPECT EROSION CONTROL MEASURES WEEKLY. THE CONTRACTOR MUST REMOVE ANY SILT DEPOSITS GREATER THAN 6" COLLECTED ON THE FILTER FABRIC AND/OR SILT SOCK BARRIERS AND EXCAVATE AND REMOVE ANY SILT FROM DROP INLET PROTECTION. 7. THE CONTRACTOR MUST APPLY TEMPORARY SEED AND MULCH TO ALL DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINISHED GRADE AND VEGETATED WITHIN 7 DAYS. WHEN AREAS ARE DISTURBED AFTER THE GROWING SEASON, THE CONTRACTOR MUST STABILIZE SAME WITH GEOTEXTILE FABRIC AND MAINTAIN SAME IN STRICT ACCORDANCE WITH BEST MANAGEMENT PRACTICES. 8. THE CONTRACTOR MUST INSTALL ADDITIONAL EROSION CONTROL MEASURES IF ENGINEER SO REQUIRES, TO PREVENT ANY, INCLUDING THE INCIDENTAL, DISCHARGE OF SILT -LADEN RUNOFF FROM EXITING THE SITE. 9. THE CONTRACTOR MUST BE RESPONSIBLE FOR INSPECTING AND MAINTAINING ALL EROSION CONTROL MEASURES ON THE SITE UNTIL PERMANENT PAVING AND TURF/LANDSCAPING IS ESTABLISHED. THE COSTS OF INSTALLING AND MAINTAINING THE EROSION CONTROL MEASURES MUST BE INCLUDED IN THE BID PRICE FOR THE SITE WORK AND THE CONTRACTOR IS RESPONSIBLE FOR ALL SUCH COSTS. 10. THE CONTRACTOR MUST CONTINUE TO MAINTAIN ALL EROSION CONTROL MEASURES UNTIL THE COMPLETION OF CONSTRUCTION AND THE ESTABLISHMENT OF VEGETATION. 11. THE CONTRACTOR MUST REMOVE EROSION CONTROL MEASURES, SILT AND DEBRIS AFTER ESTABLISHING PERMANENT VEGETATION COVER OR OTHER INSTALLING A DIFFERENT, SPECIFIED METHOD OF STABILIZATION. 12. THIS PLAN REPRESENTS THE MINIMUM LEVEL OF IMPLEMENTATION OF TEMPORARY EROSION AND SEDIMENTATION CONTROL FACILITIES, MEASURES AND STRUCTURES. ADDITIONAL FACILITIES, MEASURES AND STRUCTURES MUST BE INSTALLED WHERE NECESSARY TO COMPLY WITH ALLAPPLICABLE CODES AND STANDARDS AND/OR TO PREVENT ANY, INCLUDING THE INCIDENTAL DISCHARGE OF SILT -LADEN RUNOFF FROM EXITING THE SITE. 13. THE CONTRACTOR MUST PROTECT ALL EXISTING TREES AND SHRUBS. THE CONTRACTOR MUST REFER TO THE LANDSCAPE AND/OR DEMOLITION PLAN(S) FOR TREE PROTECTION, FENCE LOCATIONS AND DETAILS. 14. THE CONTRACTOR MUST REFER TO GRADING PLANS FOR ADDITIONAL INFORMATION. 15. THE CONTRACTOR MUST CLEAN EXISTING AND PROPOSED DRAINAGE STRUCTURES AND INTERCONNECTING PIPES ON OR OFF -SITE AS THE JURISDICTIONAL AGENCY REQUIRES, BOTH AT THE TIME OF SITE STABILIZATION AND AT END OF PROJECT. 16. SOIL EROSION CONTROL MEASURES MUST BE ADJUSTED OR RELOCATED BY THE CONTRACTOR AS IDENTIFIED DURING SITE OBSERVATION IN ORDER TO MAINTAIN THE COMPLETE EFFECTIVENESS OF ALL CONTROL MEASURES. 17. THE CONTRACTOR MUST IDENTIFY, ON THE PLAN, THE LOCATION OF WASTE CONTAINERS, FUEL STORAGE TANKS, CONCRETE WASHOUT AREAS AND ANY OTHER LOCATIONS WHERE HAZARDOUS MATERIALS ARE STORED. GRADING NOTES (Rev.22021) 1. THE GENERAL NOTES MUST BE INCLUDED AS PART OF THIS ENTIRE DOCUMENT PACKAGE AND ARE PART OF THE CONTRACT DOCUMENTS. THE GENERAL NOTES ARE REFERENCED HEREIN, AND THE CONTRACTOR MUST REFER TO THEM AND FULLY COMPLY WITH THESE NOTES, IN THEIR ENTIRETY. THE CONTRACTOR MUST BE FAMILIAR WITH AND ACKNOWLEDGE FAMILIARITY WITH ALL OF THE GENERAL NOTES AND ALL OF THE PLANS' SPECIFIC NOTES. 2. SITE GRADING MUST BE PERFORMED IN ACCORDANCE WITH THESE PLANS AND SPECIFICATIONS AND THE RECOMMENDATIONS SET FORTH IN THE GEOTECHNICAL REPORT AS REFERENCED IN THIS PLAN SET. IF NO GEOTECHNICAL REPORT HAS BEEN REFERENCED, THE CONTRACTOR MUST HAVE A GEOTECHNICAL ENGINEER PROVIDE WRITTEN SPECIFICATIONS AND RECOMMENDATIONS PRIOR TO THE CONTRACTOR COMMENCING THE GRADING WORK. THE CONTRACTOR MUST FOLLOW THE REQUIREMENTS OF ALL MUNICIPAL, COUNTY, STATE, AND FEDERAL LAWS, WHICH HAVE JURISDICTION OVER THIS PROJECT. 3. THE CONTRACTOR IS REQUIRED TO SECURE ALL NECESSARY AND/OR REQUIRED PERMITS AND APPROVALS FOR ALL OFF -SITE MATERIAL SOURCES AND DISPOSAL FACILITIES. THE CONTRACTOR MUST SUPPLY A COPY OF APPROVALS TO THE ENGINEER OF RECORD AND THE OWNER PRIOR TO THE CONTRACTOR COMMENCING ANY WORK. 4. THE CONTRACTOR IS FULLY RESPONSIBLE FOR VERIFYING EXISTING TOPOGRAPHIC INFORMATION AND UTILITY INVERT ELEVATIONS PRIOR TO COMMENCING ANY CONSTRUCTION. SHOULD DISCREPANCIES BETWEEN THE PLANS AND INFORMATION OBTAINED THROUGH FIELD VERIFICATIONS BE IDENTIFIED OR EXIST, THE CONTRACTOR MUST IMMEDIATELY NOTIFY THE ENGINEER OF RECORD, IN WRITING. 5. THE CONTRACTOR IS RESPONSIBLE FOR REMOVING AND REPLACING ALL UNSUITABLE MATERIALS WITH SUITABLE MATERIALS AS SPECIFIED IN THE GEOTECHNICAL REPORT. THE CONTRACTOR MUST COMPACT ALL EXCAVATED OR FILLED AREAS IN STRICT ACCORDANCE WITH THE GEOTECHNICAL REPORTS GUIDANCE. MOISTURE CONTENT AT TIME OF PLACEMENT MUST BE SUBMITTED IN A COMPACTION REPORT PREPARED BY A QUALIFIED GEOTECHNICAL ENGINEER, REGISTERED WITH THE STATE WHERE THE WORK IS PERFORMED. THIS REPORT MUST VERIFY THAT ALL FILLED AREAS AND SUBGRADE AREAS WITHIN THE BUILDING PAD AREA AND AREAS TO BE PAVED HAVE BEEN COMPACTED IN ACCORDANCE WITH THESE PLANS, SPECIFICATIONS AND THE RECOMMENDATIONS SET FORTH IN THE GEOTECHNICAL REPORT AND ALL APPLICABLE REQUIREMENTS, RULES, STATUTES, LAWS, ORDINANCES AND CODES WHICH ARE IN EFFECT AND WHICH ARE APPLICABLE TO THE PROJECT. SUBBASE MATERIAL FOR SIDEWALKS, CURB, OR ASPHALT MUST BE FREE OF ORGANICS AND OTHER UNSUITABLE MATERIALS. SHOULD SUBBASE BE DEEMED UNSUITABLE BY OWNERIDEVELOPER, OR OWNER/DEVELOPER'S REPRESENTATIVE, SUBBASE MUST BE REMOVED AND FILLED WITH APPROVED FILL MATERIAL, COMPACTED AS THE GEOTECHNICAL REPORT DIRECTS. EARTHWORK ACTIVITIES INCLUDING, BUT NOT LIMITED TO, EXCAVATION, BACKFILL, AND COMPACTING MUST COMPLY WITH THE RECOMMENDATIONS IN THE GEOTECHNICAL REPORT AND ALL APPLICABLE REQUIREMENTS, RULES, STATUTES, LAWS, ORDINANCES AND CODES. EARTHWORK ACTIVITIES MUST COMPLY WITH THE STANDARD STATE DOT SPECIFICATIONS FOR ROADWAY CONSTRUCTION (LATEST EDITION) AND ANY AMENDMENTS OR REVISIONS THERETO. 6. IN THE EVENT OF A DISCREPANCY(IES) AND/OR A CONFLICT(S) BETWEEN PLANS, OR RELATIVE TO OTHER PLANS, THE GRADING PLAN TAKES PRECEDENCE AND CONTROLS. THE CONTRACTOR MUST IMMEDIATELY NOTIFY THE ENGINEER OF RECORD, IN WRITING, OF ANY DISCREPANCY(IES) AND/OR CONFLICT(S). 7. THE CONTRACTOR IS RESPONSIBLE TO IMPORT FILL OR EXPORT EXCESS MATERIAL AS NECESSARY TO CONFORM TO THE PROPOSED GRADING, AND TO BACKFILL EXCAVATIONS FOR THE INSTALLATION OF UNDERGROUND IMPROVEMENTS. DRAINAGE AND UTILITY NOTES (Rev.22021) 1. THE GENERAL NOTES MUST BE INCLUDED AS PART OF THIS ENTIRE DOCUMENT PACKAGE AND ARE PART OF THE CONTRACT DOCUMENTS. THE GENERAL NOTES ARE REFERENCED HEREIN, AND THE CONTRACTOR MUST REFER TO THEM AND FULLY COMPLY WITH THESE NOTES, IN THEIR ENTIRETY. THE CONTRACTOR MUST BE FAMILIAR WITH AND ACKNOWLEDGE FAMILIARITY WITH ALL OF THE GENERAL NOTES AND ALL OF THE PLANS' SPECIFIC NOTES. 2. LOCATIONS OF ALL EXISTING AND PROPOSED SERVICES ARE APPROXIMATE AND THE CONTRACTOR MUST INDEPENDENTLY VERIFY AND CONFIRM THOSE LOCATIONS AND SERVICES WITH LOCAL UTILITY COMPANIES PRIOR TO COMMENCING ANY CONSTRUCTION OR EXCAVATION. THE CONTRACTOR MUST INDEPENDENTLY VERIFY AND CONFIRM ALL SANITARY CONNECTION POINTS AND ALL OTHER UTILITY SERVICE CONNECTION POINTS IN THE FIELD, PRIOR TO COMMENCING ANY CONSTRUCTION. THE CONTRACTOR MUST REPORT ALL DISCREPANCIES, ERRORS AND OMISSIONS IN WRITING, TO THE ENGINEER OF RECORD. 3. THE CONTRACTOR MUST VERTICALLY AND HORIZONTALLY LOCATE ALL UTILITIES AND SERVICES INCLUDING, BUT NOT LIMITED TO, GAS, WATER, ELECTRIC, SANITARY AND STORM, TELEPHONE, CABLE, FIBER OPTIC CABLE, ETC. WITHIN THE LIMITS OF DISTURBANCE OR WORK SPACE, WHICHEVER IS GREATER. THE CONTRACTOR MUST USE, REFER TO, AND COMPLY WITH THE REQUIREMENTS OF THE APPLICABLE UTILITY NOTIFICATION SYSTEM TO LOCATE ALL OF THE UNDERGROUND UTILITIES. THE CONTRACTOR IS RESPONSIBLE FOR REPAIRING ALL DAMAGE TO ANY EXISTING UTILITIES WHICH OCCUR DURING CONSTRUCTION, AT NO COST TO THE OWNER AND AT CONTRACTOR'S SOLE COST AND EXPENSE. THE CONTRACTOR MUST BEAR ALL COSTS ASSOCIATED WITH DAMAGE TO ANY EXISTING UTILITIES WHICH OCCURS DURING CONSTRUCTION. 4. THE CONTRACTOR MUST FIELD VERIFY THE PROPOSED INTERFACE POINTS (CROSSINGS) WITH EXISTING UNDERGROUND UTILITIES BY USING A TEST PIT TO CONFIRM EXACT DEPTH, PRIOR TO COMMENCEMENT OF CONSTRUCTION. 5. STORMWATER ROOF DRAIN LOCATIONS ARE BASED ON ARCHITECTURAL PLANS. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING LOCATIONS OF SAME BASED UPON FINAL ARCHITECTURAL PLANS. 6. THE CONTRACTOR IS RESPONSIBLE FOR COORDINATING SITE PLAN DOCUMENTS AND ARCHITECTURAL PLANS FOR EXACT BUILDING UTILITY CONNECTION LOCATIONS; GREASE TRAP REQUIREMENTS; AND DETAILS, DOOR ACCESS, AND EXTERIOR GRADING. THE ARCHITECT WILL DETERMINE THE UTILITY SERVICE SIZES. THE CONTRACTOR MUST COORDINATE INSTALLATION OF UTILITY SERVICES WITH THE INDIVIDUAL COMPANIES TO AVOID CONFLICTS AND TO ENSURE THAT PROPER DEPTHS ARE ACHIEVED. THE CONTRACTOR IS RESPONSIBLE FOR ENSURING THAT INSTALLATION OF ALL IMPROVEMENTS COMPLIES WITH ALL UTILITY REQUIREMENTS OF THE APPLICABLE JURISDICTION AND REGULATORY AGENCIES AND ALL OTHER APPLICABLE REQUIREMENTS, RULES, STATUTES, LAWS, ORDINANCES AND CODES AND, FURTHER, IS RESPONSIBLE FOR COORDINATING THE UTILITY TIE-INS/CONNECTIONS PRIOR TO CONNECTING TO THE EXISTING UTILITY/SERVICE. WHERE A CONFUCT(S) EXISTS BETWEEN THESE DOCUMENTS AND THE ARCHITECTURAL PLANS, OR WHERE ARCHITECTURAL PLAN UTILITY CONNECTION POINTS DIFFER, THE CONTRACTOR MUST IMMEDIATELY NOTIFY THE ENGINEER OF RECORD, IN WRITING, AND PRIOR TO CONSTRUCTION, MUST RESOLVE SAME. 7. ALL FILL, COMPACTION, AND BACKFILL MATERIALS REQUIRED FOR UTILITY INSTALLATION MUST BE EXACTLY AS PER THE RECOMMENDATIONS PROVIDED IN THE GEOTECHNICAL REPORT AND THE CONTRACTOR MUST COORDINATE SAME WITH THE APPLICABLE UTILITY COMPANY SPECIFICATIONS. WHEN THE PROJECT DOES NOT HAVE GEOTECHNICAL RECOMMENDATIONS, FILL AND COMPACTION MUST COMPLY WITH APPLICABLE REQUIREMENTS AND SPECIFICATIONS. ENGINEER OF RECORD AND BOHLER ARE NOT RESPONSIBLE FOR DESIGN OF TRENCH BACKFILL OR FOR COMPACTION REQUIREMENTS 8. DURING THE INSTALLATION OF SANITARY, STORM, AND ALL UTILITIES, THE CONTRACTOR MUST MAINTAIN A CONTEMPORANEOUS AND THOROUGH RECORD OF CONSTRUCTION TO IDENTIFY THE AS -INSTALLED LOCATIONS OF ALL UNDERGROUND INFRASTRUCTURE. THE CONTRACTOR MUST CAREFULLY NOTE ANY INSTALLATIONS THAT DEVIATE, IN ANY RESPECT, FROM THE INFORMATION CONTAINED IN THESE PLANS. THIS RECORD MUST BE KEPT ON A CLEAN COPY OF THE APPROPRIATE PLAN(S), WHICH THE CONTRACTOR MUST PROMPTLY PROVIDE TO THE OWNER IMMEDIATELY UPON THE COMPLETION OF WORK. 9. THE CONTRACTOR MUST ENSURE THAT ALL UTILITY TRENCHES LOCATED IN EXISTING PAVED ROADWAYS INCLUDING SANITARY, WATER AND STORM SYSTEMS, ARE REPAIRED IN ACCORDANCE WITH REFERENCED MUNICIPAL, COUNTY AND OR STATE DOT DETAILS AS APPLICABLE. THE CONTRACTOR MUST COORDINATE INSPECTION AND APPROVAL OF COMPLETED WORK WITH THE AGENCY WITH JURISDICTION OVER SAME. 10. FINAL LOCATIONS OF PROPOSED UTILITY POLES, AND/ OR POLES TO BE RELOCATED ARE AT THE SOLE DISCRETION OF THE RESPECTIVE UTILITY COMPANY, REGARDLESS OF WHAT THIS PLAN DEPICTS. 11. WATER SERVICE MATERIALS, BURIAL DEPTH, AND COVER REQUIREMENTS MUST BE SPECIFIED BY THE LOCAL UTILITY COMPANY. THE CONTRACTOR MUST CONTACT THE APPLICABLE MUNICIPALITY TO CONFIRM THE PROPER WATER METER AND VAULT, PRIOR TO COMMENCING CONSTRUCTION. 12. THE TOPS OF EXISTING MANHOLES, INLET STRUCTURES, AND SANITARY CLEANOUT MUST BE ADJUSTED, AS NECESSARY, TO MATCH PROPOSED FINISHED GRADES WITH NO TRIPPING OR SAFETY HAZARD IN ACCORDANCE WITH ALL APPLICABLE STANDARDS, REQUIREMENTS, RULES, STATUTES, LAWS, ORDINANCES AND CODES. W r, Z Of W W W N Z W U ZjZ(AU Z W H U W Ur ZW WUJ�W zrc -o�w F W Q 2 W Z �><Ix-j (n7 QQZQ zU)2 W ZFH 0zQof Qa~O 0 Q O U a H Q OZ(naZ 5;aJ of �_ U W H_ V5 REVISIONS REV I DATE I COMMENT =� 15 Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: SDP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLER// 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 10/07/2021 SHEET TITLE: GENERAL NOTES SHEET NUMBER: C-102 N O N n 0 a 0 ORG. DATE - 10/7/2021 STANDARD DRAWING LEGEND FOR ENTIRE PLAN SEI STANDARD ABBREVIATIONS LIMIT OF WORK 1_0W L.^,:: LIMIT OF DISTURBANCE LOD LOD EXISTING NOTE TYPICAL NOTE TEXT PROPOSED NOTE ONSITE PROPERTY LINE / R.O.W. LINE PROPERTY LINE / INTERIOR PARCEL LINE EASEMENT LINE -------_-- SETBACK LINE CURB AND GUTTER SPILL I TRANSITION CONCRETE CURB & GUTTER DEPRESSED CURB AND GUTTER UTILITY POLE WITH LIGHT ago POLE LIGHT TRAFFIC LIGHT O UTILITY O POLE TYPICAL LIGHT ACORN LIGHT TYPICAL SIGN Q PARKING COUNTS — — —110— — — CONTOUR 190 ------------- /E.9------------ LINE 187 7C 51G! SPOT TC 516.00 FTC 516.00 MATCH EX 6W 516.4 ELEVATIONS BC 515.55 518.02 t JHIV SANITARY OAN LABEL # STORM # LABEL # SC SANITARY SEWER eL LATERAL /y UNDERGROUND vy WATER LINE E UNDERGROUND E ELECTRIC LINE G UNDERGROUND C GAS LINE y OVERHEAD vH WIRE T UNDERGROUND T TELEPHONE LINE C UNDERGROUND C CABLE LINE STORM — — — — — — — — — SEWER SANITARY S SS SEWER MAIN HYDRANT O SANITARY O MANHOLE STORM i O` MANHOLE i ® M WATER METER WV WATER • VALVE ❑ GAS VALVE ® GAS METER TYPICAL END SECTION HEADWALL OR �OR� ENDWALL O GRATE O INLET Q� CURB PLI INLET 0 CLEAN 0 OUT O ELECTRIC O MANHOLE O TELEPHONE O MANHOLE EB ELECTRIC EB BOX EP ELECTRIC EP PEDESTAL 46 MONITORING WELL TEST PIT BENCHMARK BORING FOR ENTIRE PLAN SET AC ACRES ADA AMERICANS WITH DISABILITY ACT ARCH ARCHITECTURAL BC BOTTOM OF CURB BF BASEMENT FLOOR BK BLOCK BL BASELINE BLDG BUILDING BM BUILDING BENCHMARK BRL BUILDING RESTRICTION LINE CIF CUBIC FEET CL CENTERLINE CMP CORRUGATED METAL PIPE CONN CONNECTION CONIC CONCRETE CPP CORRUGATED PLASTIC PIPE CY CUBICYARDS DEC DECORATIVE DEP DEPRESSED DIP DUCTILE IRON PIPE DOM DOMESTIC ELEC ELECTRIC ELEV ELEVATION EP EDGE OF PAVEMENT ES EDGE OF SHOULDER EW END WALL EX EXISTING FES FLARED END SECTION FF FINISHED FLOOR FH FIRE HYDRANT FG FINISHED GRADE G GRADE GF GARAGE FLOOR (AT DOOR) GH GRADE HIGHER SIDE OF WALL GL GRADE LOWER SIDE OF WALL GRT GRATE GV GATE VALVE HOPE HIGH DENSITY POLYETHYLENE PIPE HP HIGH POINT HOR HORIZONTAL HW HEADWALL INT INTERSECTION INV INVERT LF LINEAR FOOT LOC LIMITS OF CLEARING LOD LIMITS OF DISTURBANCE LOS LINE OF SIGHT LP LOW POINT US LANDSCAPE MAX MAXIMUM MIN MINIMUM MH MANHOLE MJ MECHANICALJOINT OC ON CENTER PA POINT OF ANALYSIS PC POINT CURVATURE PCCR POINT OF COMPOUND CURVATURE, CURB RETURN PI POINT OF INTERSECTION POG POINT OF GRADE PROP PROPOSED PT POINT OF TANGENCY PTCR POINT OF TANGENCY, CURB RETURN PVC POLYVINYL CHLORIDE PIPE PVI POINT OF VERTICAL INTERSECTION PVT POINT OF VERTICAL TANGENCY R RADIUS RCP REINFORCED CONCRETE PIPE RET WALL RETAINING WALL RAN RIGHT OF WAY S SLOPE SAN SANITARY SEWER SF SQUARE FEET STA STATION STM STORM S/W SIDEWALK TBR TO BE REMOVED TBRL TO BE RELOCATED TC TOP OF CURB TELE TELEPHONE TPF TREE PROTECTION FENCE TW TOP OF WALL TYP TYPICAL UG UNDERGROUND UP UTILITY POLE W WIDE W/L WATER LINE W/M WATER METER 3 PLUS OR MINUS ° DEGREE 0 DIAMETER # NUMBER PROPOSED EASEMENT LEGEND COMMON SHARED IE I INGRESS -EGRESS PA I PUBLIC ACCESS I PUBLIC UTILITY A I SANITARY SEWER SI SIGHT DISTANCE T I STORM DRAIN VA VARIABLE WIDTHS �I WATER J 0 m r7 z EE W W W rn Z W z0 ZDZ02 W H U W> Ur Z W W(Oj W F W Q 2 W Z J>z0woo (n 7 Q Q Z Q zU)2 W ZFH �zQQa~O Q J 0 U) W Z Z d Q J o Q of J F U W I— V5 REVISIONS REV I DATE I COMMENT • Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 10/7/2021 CAD I.D.: SDP - O PROJECT VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 10/07/2021 SHEET TITLE: GENERAL NOTES AND LEGEND SHEET NUMBER: C-103 ORG. DATE - 10/7/2021 / / / I 1 1 1 ;I ' _ '' I / I _ i ' ` 1 i' --` --"- I � PHASE I SEQUENCE OF CONSTRUCTION ~ / '' 1. OBTAIN ALL REQUIRED PERMITS. / f i� / , / , _-- / ; - -- / / I II1, I r 2. ATTEND PRE- CONSTRUCTION MEETING. ` ' / I i ' _ / ' " I ' ' I , 3. CONTRACTOR SHALL CONTACT JURISDICTION AT LEAST 1 WEEK PRIOR TO COMMENCING CONSTRUCTION. ' / / / ' % - - ' I`\ �''': ' ' \'` 4. CONTRACTOR SHALL STAKE AND FLAG LIMITS OF DISTURBANCE. ' /' ' ' % \ `\ /' '' / =�;' - X \�, ' ' '` 5. CONTRACTOR TO USE THE EXISTING ENTRANCE ON SITE AS CONSTRUCTION ENTRANCES PRIOR TO Z /' ;' l ;- <_ ;-�' ;--------' / / 9 ,,, '�!/,''/,' ; / \ \ , GRADING AND INSTALLING THE PROPOSED CONSTRUCTION ENTRANCE ALONG ASHWOOD DRIVE. W '\ k, ; ` `\ \ / / �' '' �� '' ' 'z,', I \ �`� - / ,� \`\ `\ 6. DEMO ALL FEATURES NEEDED TO INSTALL ALL PERIMETER CONTROLS. W N \\ \` I, , / \ \I \ _ — — / , - / / \ , I 7. PERFORM GRADING SHOWN IN PHASE I TO INSTALL THE CONSTRUCTION ENTRANCES PRIOR TO THE Z F of Z W ' i �`� ` /<''/ /' '' ' ' �\ ``\` ` \`\ `, START OF ANY MASS EARTH MOVING ACTIVITIES. U Z � U U \\ \ \ \ ` % / r' , , - \\ / �\ \ `\ `,- 8. CONTRACTOR TO GRADE AND INSTALL ALL SEDIMENT TRAPS AND SEDIMENT BASINS AS SHOWN IN PHASE I W C7 U U U \ \\ �`�`\ �`I , _ ---_ /I � / / , �'I ,' � '%t i / I I / \� ` \ J '' `\ �\ \ `-I OF THE EROSION AND SEDIMENT CONTROL PLAN. U Z lyJ W (n W `\ `\ \\` `� \ _ -- ) ✓ / __ '' /'/ ,, , ,'((' `mot' `\ \ - --_ _ `\ ` i 9. CONTRACTOR TO BEGIN MASS EARTHWORK OPERATION TO REACH PROPOSED PAD ELEVATIONS. AS THE Z CO ~ (n `\ ` ` `\ \ -- --- �`, , ,'' ,' _-'; /I/'� -' I i /1 1 : ``- ��` -- `\ ``\ i i EARTHWORK OPERATION IS BEING PERFORMED CONTRACTOR TO ENSURE THAT ALL TEMPORARY H W Q 2 W Z ``\ \`\, 2", \- / // t" \ I.' 1I�; i ' I `, \ `\ - \�\``` - "" ' , ' i \ i DIVERSIONS ARE MAINTAINED TO KEEP RUNOFF DIRECTED TO THE EROSION AND SEDIMENT CONTROL � of Q of J U O \ \,` ` �\ I _ __ 'I \ ``�`� ` 'i I i i MEASURES SHOWN IN PHASE I OF THE EROSION AND SEDIMENT CONTROL PLAN. U U) Q m U ~ `\ �`x `", _ - •J; I �'(/ _ _ - - Y' ` I `\ RR` `\``�\ \ ` ``\ `\ ///IIIIIll,\ `�`-- ' , I 10. CONTACTOR SHALL GRADE AND BUILD THE FOUR TOWNHOMES PROPOSED WITHIN SB-1 LAST SO THAT Z U W Z_ H `\` ` \ �\ \ _ _ \ /�\ `` ` \\ O d H J _ L of /' \`\ `i ``�\`\\ �'\ �. /%/:'' Q`�O / / 1\ j I O ` ` \�` ` ` `\\ `\`\ \ _ ` �� ' ' SBA CAN REMAIN IN USE UNTIL THE SITE ADJACENT AND UPHILL OF THE SEDIMENT BASIN IS Q _-_-___�\ _ i _ ' -- 0 / Iab GI l�i ___ __ -_-__ _ 1 OR TO PROVIDE TEMPORARY SEEDING AND DUST CONTROL OF ALL DISTURBED AREAS AS ` ' `, ` - `,\\ `\`\ `, \\ \ `\ \\\ \``\ ' `, PERMANENTLY STABILIZED 0 Q U 2 OL / c Ile`\ , RI / " I /AI , ' _ / / NEEDED. - y 1 401 11 \ 1 op� ` � `\ I 1 CONTRACT Z 0� Of U ` \ , � � `` Q � U LLI Z \ \,\ \\,\`\ \\\\ \\ , ` ```\ 1 ` \ J d Q d of 11 ( \ `\ ` , \ \\ \ \ \ \\ ```\ `\ __ /� / ' `I �\ItD, I'` V°p''' / ' o ` `` ``� �` `�\\ `\ \` ` \ 11\`�, \-- _ --- --_ v1-" I I THE COUNTY CONSTRU TION.OSION AND SEDIMENT CONTROL INSPECTORS APPROVAL AND COMPLETION OF ALL PHASE I / _ \ �` f CONTRACTOR SHALL NOT COMMENCE PHASE II OF THE EROSION AND SEDIMENT CONTROL PLAN PRIOR % � �;, \\I \ \ \ , , - - / __ -- - _ — ' / ' 1 ___ \ . \\\ _ -_ ,gam -/, V' / 7 / ���` �` / Y - - %% - /i . r III , ----- /i — „ ` - , - �'"� - -� - / - /'�' ST-1 �'" `\ � `, , ` ' " \ , \ \` \\ � '\�I�uos`Nl �' ;' � �' � `\ REVISIONS - - \\------- - --'%-- � =/ --� 49 pN 1 \ i \ }; \,\ \`\� wod4�Ra�ER�x/NlYES.TiG1ETSALL� } ,' _ ____- — — — —_ �� _ �i �� �-I'll _ '�°O i' I 't 1 $ _ _-_-' '; "\ `�� �,1 ` `\ �`\ \\ . `\ \\ `\ '` ` `, AB'\, ✓478`✓�I^i .J�BQ I' I i' REV DATE COMMENT of _' _ - - -- - - / /. i p\ I I /�/' k\ cN o so � ;, \\� PJd. 0�6a?O ;\ '00 O� 'Y \ - - - / / -^ - --- - �\ \ AM --------- -- -- - __ I \ -__ / /�' �'Ar = '' / \ -i I �- �\\ ` ` \\ \\ \ `\ \(��EE\ SN E` \ /LY RE b NTAL \ 496, / \ , I \\,, \ \ \ \ `` ` ---- _ _ _--- ------ I /' , ' - -- .\ It St`` i ` \ \\\ ,\ , \;\ \ `\ ` I __-___ —/ ! 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NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL ANDIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OAR-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA E3.13 TEMPORARY SEDIMENT TRAP ST BOHLER// E TEMPORARY SEDIMENT BASIN SB E OUTLET PROTECTION OP E TEMPORARY SEEDING TS TS ESERVAT E TREEPR PROTECTION ION Tp TP AND 3.39 DUST CONTROL DC p� 60 30 15 0 60 1 "= 60' 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH OFl- Z V N YA R y q Lic. No. 0402056625 "Z 10/07/2021 SHEET TITLE: OVERALL EROSION AND SEDIMENT 'ONTROL PHASE SHEET NUMBER C-600 IIIIIIIIIIIIIIIIIIII ORG. DATE - 10/7/2021 n / i- 5LJlfii5EMf/V7 B., 4689 PG -43, ;';,'i , , , , , , `♦ �--_,- Aso ,♦ =P� F Y� h W.72 (' 1/ / l GC'f,ASEMENi, ♦� `"m \ c ` " ------ I SF - 7J ----- -- ENTRSEME,VT \ `, \\ `\ `\ \ `` /I, \\ \ \\ ♦\` `,` -- ___________ ------------ -- - \ ``\`\ \ \`\\\ ---- ay a) ` \ \ ` \ \`` \ ----------------------- ---------- TP \ ♦\\ '1"------- --\\ `\,\ ,\ . ♦ w. .♦! tom.♦♦ \ \`.` ---\, `\ \ `\ `\ ``, ` \ •`♦,♦ i A 1�?1,'� \4: pR\�$\4�r�`AC.``fM�,. �u'� Nos N\\ \ UP), IQOOQ PI�PE�'JY XrV ES�tMEN 09. 3679 )RC 380 \ Ts \ \ P/ 04600T00-Y10-029A1 \N/M� RT\ �RES/pENTS4L \ \ \\ S/1A�d\FAAkY R2WZV 496 DC / ' Y ► �'' ° ___ Iky \ \� 'SOON i ' ' \ \ ' i/DD TP -49 SF / / ' l I I ✓ \ 13- S 1 SF / , �1 � I 0 � ! I I ✓ v �r-� /\� I \I , \ DC ® I, I , I `\ i ; i i i i I `\ `\ l i�R6 ",V- '� �/ SRO. / = I /I I \I� T' \'�\\ 1 i ``I 11 '\\ / TS ' % SF ' i , l%I�, / ( 1 1 1 ' v i i 1 TP rfP 400 LF. SF D °1 a{ o EN0A1a4011MENT APPROX. L SF/ 0.25 AC 3o�EMETfRY PROPERTY \ �r 215 L. F. 8/7 `♦\ OF N£P EASEMENT 2M 527 PG: 177 \\ ;\\�/ r v 0 I' `\ \, `♦ `. 4 49 � J D.B. 233 PG'. 5pp _ I ' O B 66 G 1 TB!' `3Q2 (TBK% L/' I \ I ``\ I � -N. / \ - - -- I i '- - / 1 DC y --------------- -------------- TP / I \ \ l TRESS EASEMENT r� I \ /' �/' I \ (FOJ 0029-002-135 11 ' ; / / 1 bfl DC 'I 462 ♦ /; SF I 1 1 SF ' - O,�j` --- ' DD , I y %\ // 0`{0' PCQ EAENT _ P ST-2 // ! I V9° --- ____='==jam\ �' P.B.466P�4.94 �\ _ 1 - W, / ' ' / = Ea CULIERT (MR < \ \ \ ------- -F — — ' ---------------- Z ° --- oo _ --- A _ iJ� lJ \ 5 —� fir-_ ---- "--- APPRO/1` LOL: - \ ---- _- TP f OF/10' IVEPCO EASEMENT \ \1 \\� `\ �c - _ o • tJ.� \ \\ TP SF / /� " �\ % BB %466 PG: 494 (TBl/J\- ��il"�� -\� \\� \\ \\` - - DUMP STER ' ��/I 77? `GRATE \ \\ C WAY 000 498 [MATCHLINE — SHEET C-602- r.OLVERTMATCHLINE — SHEET C-603 i ■ / ` AVR9-7NLL Z ,�y ►1��PBP�P�t PPS/� ST-1 CN = 0.60 VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL E SAFETY FENCE SAF IIyl��ylyl: ® • • :x2Y CONSTRUCTION E� I.I. l� I� I• �s!X�s!X�r�i!X�s!Xr E SILT FENCE SF XX 3.07STORM DRAIN INLET PROTECTION Ir 3.08 CULVERT INLET PROTECTION Clr 3.09 TEMPORARY DIVERSION DIKE 3.13 TEMPORARY SEDIMENT TRAP ST 3.14 TEMPORARY SEDIMENT BASIN SB 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS 3.38 AND PROTECTIONION Tp TP 3.39 DUST CONTROL DC p� 30 15 7.5 0 30 1 "= 30' Z EE LU W W W Z F Q WW��LU a (D Z W W V. F W U. Q 2 C m > Z U u zU)2a2 °z < F, OJCJ�V. Q 0 Z V o Q J O U W H REVISIONS REV DATE I COMMENT Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL ANDIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OAR-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH OFl. z V N YA R y .p Lic. No. 0402056625 10/07/2021 t1�� NAI.E�G� SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET NUMBER: C-601 ORG. DATE - 10/7/2021 1 1 1 1 I 1 I I 1 ' I ' � I I ' ' I ' I I ' \ I ' \ I \ 1 ♦ I 1 I I I I � 1 1 /\ 1 1 1 r 1 1 1 1 1 1 1 IN IN 1 1 1 1 1 ;V I / 1 1 , 1 1 \ 1 1 1 1 \ 1 1 I \ pp \\ `\ TP `\ `\ \ \ ```♦I \ `\`1 ``\ ``\ `\ \ ``1 1`\ '\` ` \`I \ 1` `, \\ 11 I 1 \ IN '` '` \ \` 1` ''` IN ` \ Sr \ IN o pp> \\` \�rNds I;n) a I o \ COAJMb,N1L tH IOf /RG/N/A >$ \ \ - �`, \ `n u hn`a zt ok as 1 I I 1 I 1 1 I \\�Oi \\ \IN IN / 1\ \ 0h4i IN \ 25 LF.-18"CMP' 1 ` CLEAN WATER PIPE IN 1 1 90T , CN = 0.60DC \\ \ o II o J 1111 ocj I I I SF I♦ 1 � ♦\ I I' I I I; 0 0 I 1 1 1 I / ` I I11 1;1 � ' I IN — — 1 r 1 1 1 1; _ ' / / i '� ; I ; 1 I ',S4E IN ET--------------- / i ■ ATCHLINE — SHEET C-601 -n J \\ r IN -. '\ o \\ - _____ DUMPSTER-1______ \ \------------ \ T'ax IN �o A A Iko �\\ IN ; -V-er I lee \\A�`\\�I\\ \\\�`\\ \ I IN DC \\ \\ h -/- CWP za ' _' , '••� /� / \ \, LB OF EASEMENT ' a - - --/ J / I 466 PG 499,(----------------- BV CN = 0.60 - / IF OF 10'_V€PC0 EASEMENT �.' �; DC D.B. 466PG: 494SF -- ' _ _ DD♦ --------------------------- R c-�yERl I i�Rl__ MST-3A -e -Zzc !(BR) ----- ----------- � _ - AREA = .7 A . --- — ---- CN = 0.60 J"g0 _ — - /-------------- ------------- DC - I — -_- �' - �UL✓ERT, i ` S T 3 B PGb L3'Mr F; C U , >'T i � Rf '� rt RK (.j31P� � 494 (TBVJ LL Y ------- VIA i '1 472 T-3 1 CN 0.60 Igo - ICIPr I T I I CIF CM AZARDOUS MATERIALS ' STORAGE hhh AREA [Appfiar LOG. � � I IP v ,% CN = 0.60 476 / _ ? OF 10' WFCO EASE/J/E / D.B. 466 X. 494 MVJ )ETERGENfS, SOL ENT FILL AREA TO ENSURE) I \` AND WASTE WATER OF DRAINAdE TO ST-3A I 'V I TIO EA AME TI ES VEHICLE FUELING AREA AND SPILL CONTAINMENT IC �/ I , 1 I TAGING AREA & �I I 11 ✓1 A�� 1 ; ; 'i( PORTABLE TOILETS I 1 II 476 NCRETE WASHOUT `I I I I E$• `- / `I i AREA I ��x♦ \\ wt \ - f 'CULVER '1 I II X DC I II I \ ( \\ /A• yp --- IyJ �� OO -;_ VERT (78, IN --- - - - - --- -- ♦♦ If OF 10' PO'eO EAS21, O.B. 466/PG. 494 T / ROADWAY II I I I ASPifA X♦PAVED VA jRAFF/CN 1 1 1 1 qO� SF 1 I I ♦ ' ``'-, /� a \' I ♦` `\\` I it I' ; , I I i i I DID' '1 '1 I 1 I I 1 1 I' 1 '`\ `\♦1 \\' � � \ I a I SF `; 460 ,-� III it i I i IP ' 1 �_��\ `♦ i d \ i dd d 1 1 ; l I ' ____ �O \ 1 III 1 1 ' ---- / 1 -------- ♦ \ II TP 1 I 1 I - y\ I ,1AREA = 28 , ♦ \` \ \` DC S 1 \� '1 i Ji; 1, 1 I, CN = 0.60 470 — ---------- ll III 1 , I \ / `\\ �\ \ OF 10' VEPCOAREA 11 ______, / \ \ INI O.B. 466 PG 4 CN = 0.60 II Ts I 1 CWP IP .: �; 28' i i /' //'�i' A EA-0.24 ; It '1 '1 '1 I ``, I 466 /•/� / I a I 1 1 I 1 1 1 Ary CN = 0.60 58 LF. - 71=13 CL€0P , ✓' .rfr' I ANWATER PIPE DD [ M7 o TOP1 SF ' IN DD VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. DD VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF mTEMPORARYSTONE r• • ���XTi�i�i 4�t E SILT FENCE SF E WLOET PROTECTION IP 3.08 CULVERT INLET PROTECTION CIP 3.09 TEMPORARY DIVERSION DIKE 3.13 TEMPORARY SEDIMENT TRAP 3.14 TEMPORARY SEDIMENT BASIN SB 3.18 OUTLET PROTECTION OP 3.31 TEMPORARY SEEDING TS TS 3.38 AND PROTECTIONION t TP 3.39 DUST CONTROL 30 15 7.5 0 30 1 "= 30' 1■�. Z EE W W Z W W Wz1Z0W2 Z W H 2 W > (DzWw2jw zrCD�2D_U F W Q 2 W Z >ZUWU)0 � Z U)2 W Zp: ° ZQaa~o Q J Z W Z Of U)Z d Z > aJ O U W REVISIONS REV DATE I COMMENT Di Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL ANDIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OAP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _.a WH e.. F;M%N YAIJ ER Lic. No. 0402056625 1 10/07/2021 _J SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET NUMBER C-602 ORG. DATE - 10/7/2021 ,-,,�- �� ;' - MATCHLINE — SHEET C-601 500 — APPR011'." ZOG \ \' TP_ / Irf OF; JO' VEPCO CASEMENT , o SF '>� �\ ,` I D.B. '466P0. 494(TBVJ `\ '' \ '.L���� Ire / ee ' /�R \ > _ - RATE \ - --- DUMPSTER - ------ % /-' / I�1 ' ; / j/ G,, - 1 INLET o It Ay /ja a /�0 RRNpiE - y ------------ IN ree It CRT l - rs \ Ity \ -'%'0 EASEME /''/ \ E� U - / / / / �. `\ \� `\� / ~ f OF 10' WPM EASEMENT\ \ '� -__- _ / �I D.B. 466 Pc. 494 (TBVJ l'I\�,�ii/ c 49E(fR� (igR1GULVE��(18 // - ,y - -�--- �� \ �\\\� IIIt I / - / !' / ' / APPROX. COG: 'GAL / - -L` OF 0' V£PC0 CASEMENT --- -- 29 466-PG: 494 (TBVJ �' " It ------- ----- It - \1 / /' - - ----- \ y \\ (TBRJ l (TO IPo / t I wra OF 10' VEPCO EASEMENT NrEc.r® - 'YL O FIt / 11 ��` / / " --' ' fILiLFR�(7171 ' `\ \� 1 / \' EX. `\ \ _ ,' , ✓ /%" i �c � ;' / � � ,--- _,_-- ,G 1 �R) /,,-� �E `\ _� ,- �1 TRAtLcs�rGN� m \ _ EVER �RG RJ\ \ CN - 0.60 c�/-' v (i ------ \ `\ - \ 245 LF. SF 1 ' y �/ Evv0 RpApWj------_-----. � �J 104 LF. SF 10.25 AC Rio v PpVEp W '�ULVER r HALT,''" 2 /--------' ------ x I \ ;' \ 1 Z \ / /� \ 1 \ APPREW LOG: J ? OF 10' NERCO = O.B. 466 PG. 494 (PY) k JZZE �/ i O/ APPRO,f , LOG U G•'��VERi`I'I% I OF >0' VEPGb LASE}/ENT—"�\, .� ©G Gam/ \`\ / p0� ;' / IV D.B. 494 PG. ,W \">\ ELVER / /; / / ' ItSB- It / G cL AREA = 6.3 ------f1P,PROX. LOG: OP 10' VEPCO EASEMENT ,,� -.� X X \, 1 `' / J OB. 466 PO 494 MY)"" L � ApPROX. COG: �' OF 10' V£F,L'`0 EASEMENT / I PROP. TEMPORARY } PED. R i' O.B. 466/PG 494 (TBVJ l ; / —� �`�' \ STOCKPILE - / % / \I `\ (�J � /' ' .R� / ♦ 11 i' / % I 1 / �.Jtt i ' � �` �// /�� _ � - � i / `` \ �j \ �//iN�� 1 ` . `` / �>/ TTT/ /�� � It It PROP. SSBAFFLE— EXSF 1 --_LRAFF/Cly \ ' ' ' ,% / / i / i PROP. 10'tiAFFLE `\ \ \\ \\r 1 DC R1 )/ , I I / ; / / SF 1 \ APPROX. LOG \ \ l � ;. ( I ' ( � 1 / � / ��\ � � 1 1 �`. �� f OF 10' VEPGO EASEMENT ------------ \ TP LANDS AAA/F \ \ PETL',� A. I ZO�Q/S iW 17/ERA*1A ZO&Yf I D.R.690 P6'`1507 \` - \ `,P/L1 0}�600 ' 00-Ob\-028�t0 \ \ Z,ON/(l/G , R�\ (RESIQENT/ALf' \ ShyGZ� FATLY RZVIDENT/AL \ DD SF ', J, TP \ ,,,,eril�---------- ---------------' 1 --- --- APPROX. LOG: / � Or 10' kVY0 EASEMENT "D.ff 494 PG. 540 (TBVJ / I - -- LANDS N/F LACES BREEDEN BR/)(fHEAD AND ; Y/LLARD-HQ8ARD BRICKHEAQ it FAMIL Y 7*6(5T, ET AL W.B. 128',PO 719 P/D.• 04600-0k—00-028✓0 j ZONING.- R1 (iI'ESIOENT/AL) `TP SINGLE FAMILY RES/DEN{`rIAL ; I I I I I I PROX. LOG: IF OF 10' i'EPCO 0SEM4VT O.B. 494 )GG. 540 MY)1 ; I , I I I 1 I I I , / I , 1 I , 1 W W �'• 11 'I ` 0)CD N p N W �7 vi , m m ., I 494 PG. 540 (TBVJ `. \\V � � � i � � � / i i ' ' � i I i 1 •___` 102' , ' - - A \ It O^\\ 1 PROP. 36" RISER WIT rTBRJ 1 ` 54" TRASH RACK \\ \ I ` \ It \V �' / , '� ` ', I , '� ; ; ` � ` � _ \1 a � 1 \ r•J Sri mr .rrs / rim. rrr rr- � .T 458 'LANDS OF,;` FO i I ; 1 }, .1 i / \\ `\ `\ PROP. TEMPORA�Y 24" V DD ''''-� I Li:B 1!88}3 !''G 298 o------- I APPR ..'I LOG: I `\ CMP 2.224 c c P%D." w,600-'100-00-109C ��s V V I M OF JO' VCPCO EASE ENT I `` o. B 494'PG S J I C 1\ ! . �� I i AREA 676, " 2. . ,, F" `, dR 15. 540 ti V. 40 aTB 1 1 1 I I I \ ` \ li I I AREA: \1 ? 558 ''AC (R) (TBDC EA 0.45X I TSP� i�R INS4LLPMANENT CN=0.60 J \ STRUCTURE I I 263 LF. SF \ / \ COkER (7HRJ . INSTALL�EIMANENT 146 LF. SF 10.25 AC % , APPROW LII DD -�� `, ', ', `,PIPED RIPiRAP ) l OF 10VEP DO �TECTION V 0B I 7rr,7Tr-iIt7 / OOI— \ -_ SF S65054'00"W 1025.9T ) TP VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL 3.01 SAFETY FENCE SAF ® • • AY Y Y� . H SILT FENCE SF XX 3.07STORM DRAIN INLET PROTECTION I I 3.08 CULVERT INLET PROTECTION Clr 3.09 TEMPORARY DIVERSION DIKE DD �H 3.13 TEMPORARY SEDIMENT TRAP S I LU Z EE W W W CO Z W W _� Ur Z WWW W j Zrc9t=oEZW Fw¢x >Z0wo 2< zQ Z 0 W Z F H 0ZQQa~O Q J D W Z of Z d Q d J FY O U W H REVISIONS REV DATE I COMMENT Di Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OAP-O PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: kBOHLER// OLE TRAIL E TEMPORARY SEDIMENT BASIN SD WOOD BLVD. SVILLE, VA22911 COUNTY, VA H OUTLET PROTECTION Or I S 9100 ARBORETUM PKWY, SUITE 360 3.31 TEMPORARY SEEDING TS RICHMOND, VIRGINIINIA23236 Phone: (804)893-8200 VA@BohlerEng.com 3.38 TREE PRESERVATION Tp TP AND PROTECTION I r TH Q A` '\ 3.39 DUST CONTROL DC DC V N YA R y .p Lic. No. 0402056625 V056- 10/07/2021 900PROX. LOC. , C OF 10'k9rO EASEMENT 22F494 PG 540 (&VJ I 1 " IRON PLPE F0UN0' SF 0.5'ABOVE GRAOE rP 30 15 7.5 0 30 X -� — ---= 1"=30' SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET NUMBER C-603 ORG. DATE - 10/7/2021 I I I 1 1 I I i I I I I I I 1 1 I I I I I CURB INLET PER 015 4,100 l 2955,100 A I _ �t111B LnD 609 ---k�9 LOD _ 1 I 1 I - , INLDTH_ R/GHT—OF—WAY ` ' PAVED PUBLIC ROADWAY \ _ - - - - I CURB INLET _ _---- i - _- -- /NV 9=47J, r—LO1 / Ml \ -- - - -- -\\._-------------- — \ \ __ — -- _ - -- _- - - ---- �< ---i------------ ' - ------------------ -} I 4° ------------- -- ------------------------------------------------------------------------ - ---_________________________________________________________________________________________ '--- - _ _-------- ----' 1 -'-\--------------------- EURB-/NLE_T_PER G/S== ___--------- - - - _ _ _ _ _ _ _ -----7 -- ------- _ _ _ _ _ _ _ _ _ _ -' :---- ----------i I I I - I 1 1—LO 265Bf0� �� 2659Tf00 2660f00 — 1 _ ------------------ �a --- [---�� M M M M M \ M M _E______Q��_______� ___ ___ \— ________ C� -------------------- IP -- -_-------, ------------------------ ----- - -------- -- 148 GRATE I//LET , R--" •B EN C 4J R1Y-47BJ6,' �A /PoRARY, CON�3lRU�7lON ------ jug BOTTO,k=4,j5J .� �ENTR4104 JSEME/YT ------- ---------------- -� \ \ `- — — I — — I — — I ----- ____ - ------ 265 f00 ------ 2663f00 ------- �- --- ---- ---------- ----------- _-_ ----- E T)?.4/L-_jX&-RTE. 29-------------_ — ---- lABLE W/OTH RIGHT-OF-WAY _ _---------' �— __- — I _ _ ASPHA\PAVED PUBL/C ROAON'AY - ---- _ - -- _----- '. .---tG_--- _ _ --------- - - - - - - - - - 1 1 1 I I \\\ \ -- -----------a7�N1//VL / /fi41 /L �_! (/RB INLET (TBR ------- - ------ , - ---- ` - VARIABLE W/OTH RIGHT—OF—WAY -_ ASPHALT PAVED PUBL/C ROADWAY ------ LOD -`-- __ CLOD LOD LOD LOD LOD-ILOD / ��fLOD -------------------------------__z --- ---_—_--_—_ —_-------- - IP- - -- - - - - - ------------------� - ------ ---- ---- — ----- — —----------------------- - SF I M M --------------- -------------- �490_ APPROX. ZOO.. — \ OF V£PCO EASEMENT Ts ------------------ W W 2 �U) `2 1 W Z J 2 U VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. I TITLE KEY SYMBOL 73011 SAFETY FENCE SAF TEMPORARYSTONE CONSTRUCTION ENTRANCE �iI�I_I_I�Is E SILT FENCE SF XX 3.07STORM DRAIN INLET PROTECTION II 3.08 CULVERT INLET PROTECTION CIP cp 3a Z 8 w as LU w U) z F w 9 W z W��wof (7 Z w w U)5: LU 8N Z 5� (O H WO Of U) g Fw¢x wZ �D_Q D_'J(DO 'mij w Z 2 w Z�� w Q Of Z d Q sa o Q J F ro O U zx wg H �& � s �a o� o< REVISIONS REV DATE I COMMENT DRAwx•YV Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OAP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA 3.09 TEMPORARY DIVERSION DIKE pp�IBOHLER// H TEMPORARY SEDIMENT TRAP S I F3 TEMPORARY SEDIMENT BASIN SD F318 OUTLET PROTECTION Or F3311TEMPORARY SEEDING TS TS F3 TREE AND PROTECTIONION Tp TP R DUST CONTROL 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _1 LTH e.. F;M%N YALI ER Lic. No. 0402056625 1 10/07/2021 _J SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET NUMBER C-604 30 15 7.5 0 30 1 "= 30' ORG. DATE - 10/7/2021 n PHASE II SEQUENCE OF CONSTRUCTION F P ------ r ��." ' i (', 1. CONTRACTOR TO INSTALL REMAINING UTILITIES ON SITE INCLUDING PROPOSED WATERLINE, SANITARY sa MAIN, AND STORM SEWER. - ---, 2. CONTRACTOR TO INSTALL STORM INLET PROTECTION IMMEDIATELY AFTER PROPOSED STORM INLETS ARE a INSTALLED LU 8 LU / , \ 3. CONTRACTOR TO BEGIN CONSTRUCTION OF THE PROPOSED BUILDINGS. Z F LU LU " gy 4. CONTRACTOR TO CONSTRUCT THE REMAINING CURB AND GUTTER FOR THE PARKING AREAS. Z LU H LU o w _ 5. CONTRACTOR TO INSTALL THE PROPOSED ISOLATOR ROW. W C9 U U of$ y (9 Z LU W (O i LU w y 6. CONTRACTOR TO BASE PAVE THE PARKING AREAS. Z } (9 ~ CCU g § --------- , _,;; i','� ' ,. ``- `, , H W Q 2 W Z , / , , `�. - \`•� , , 7. CONTRACTOR TO INSTALL THE PROPOSED BIORETENTION FACILITY. J> Z U L/-I U 8. CONTRACTOR TO INSTALL ALL PROPOSED SIDEWALKS. U) of Q [D U H QZQ <o U7�< 9. CONTRACTOR TO PERMANENTLY SEED ALL DISTURBED AREAS AS SOON AS FINAL GRADE IS MET. Z U g W Z H H o w _-- 1 - . - . - - - E IMMEDIATELY _ -------------- O _ = ADJACENT AND UPHILL OF THE SEDIMENT TRAPS IS PERMANENTLY STABILIZED. `�` '`.` ` �� �`.� 0 CONTRACTOR SHALL KEEP ST 1 ST 2 ST 3A ST 4 AND SBA OPERATING UNTIL SITE � Z Q Q Q � � p w o _____________ , �AI NOTE. THE COUNTY E&S INSPECTOR SHALL APPROVE PREVIOUS PHASE PRIOR TO THE NEXT PHASE COMMENCING. ------------------ I a �, _ _ ; `�`'` , ` \ - ----- - w m RP ; „ 100 \- ; �O 'cps%'�O = __ `` - - -- -- \ \ A-90 "`\ ' `` ' ' \ \ ` \ `' `\ ` I�NOS`Nj� ; ' REVISIONS STM '4 ` ` , �`. ' \ ` ` \ \ , j 0.9 -100 \,` \ '------- --- 4 CN�.60 A A '\. `` ;\'. ;\ woD11�Ro�ER�x /NlYES.TtG1Ec�TS7LL� '} ------ - - - -- - - - -- - - _- - ti A-100 5,B\ _ 78` po 390 COMMENT DRAwx ev \ , , REV DATE _ I �. , \ 'I x xeD er "-/ : ;; ; I CN 0.85 1 `�`. g�`. `� `, \ `` `� ` \ `\ \ \ `\ `\ P✓d`, 0�6Y?O �00 '(20 0 1 I c Ec , I --------------------- ------------------ STM -80 81 0 __ I (J(J-1 i � , . , Cl .� . , , 1 \ / i i 00 ON `1' `\l BUILDINGS 3p FFE? 490.25 A-71 c t i\i� 1, _ ` o eo 9 KLIOW what's below. Call before ; ' '-- / ; �:✓ ,, / '� -y' g0 , ' - ,-' S __ - r ' I 1 - 3 1 ,\ , 1 1 � '\ You dig. \ \ mob -`\ ,\ `, \\ '\ \ ,\ ALWAYS CALL 811 '_-_ ------`_ -__ It's fast. It's free. It's the law. MM NW TH F X�/ N/ o % CO 15 EAL 0 RG/ A, _ y CN=o.ea , I , 9. , % 66,�'\\ �\`, \ \, , - ` \ `\ `, 1 ,P%D.• 04BB5--0%7-OOlOt7 �� ' `- `_-=-_-�_ \ ., ` ' _ cN=o.65 `, ` ` \, `\ `, '` '` '`, \ '`, '` '` ' `' ' ' , `, NOT APPROVED FOR \ CN=o.85 \ \ ---- ',__--;`. 1 - CONSTRUCTION 1 \ 1 20N/N$PUD, (PLAN ED lfN/T;DEISELOPMENT� T'`�\ J \ `\ t USE VACANT'\ \ \ 496'49E CN=0.85 CN=0.90 / STM \ C `� ¢CfL `l22; R�`p,L� � THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY CU \ \ I �,��/ \ REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION .%' \ DOCUMENT UNLESS INDICATED OTHERWISE. 0 9 a9 \ \ PIA'60QjQQ- 8�� \ PROJECT No.: V192076 ti r A-50 \ttim%, vr'x; �✓�zrAL�`. , \ \ \ ,��++ FF�� �, DRAWN BY: MEG / PM TM '\ ` \ '\ , (vY `i` \``, \ `\ \ CHECKED BY: RTY A-62 \ CN=0.90 __, ; \\ `\ `\'\t',11 �;11 L' ,1 \ `,L Y\ \\\`\\\`\` ,` VIR EIVI 1017/2021 Q F s3. \ \ FOR EROSION AND SEDIMENT CONTROL PRACTICES CADE.D.: OBP-0 1 --_ \ \ , __ , , , \ , PROJECT: ` � A-63 --------- \ \�. \` , , , \ NO. TITLE KEY SYMBOL SAF VIRGINIABUILDING 1 A-22 - FFE 487.50 A-51 STORMWATER 0 _-_ _______ SAFETY FENCE MANAGEMENT PLA N ---A-64 FOR i i I i ' `\ ; .\ t\, : , \ ;, A-41 - -----; 6' i , ', ` \\ _____,. , TEMPORARY STONE CE '_ - 4 •` `` , ^' � •` i �' , ' i ______ _- ; - STM , , � \ , , 1 3.02 CONSTRUCTION ENTRANCE � , , 11 -0o � ;'`,\:`,. , \, 1, \ RST RESIDENCES �\ /- - �``�'`.\ `` ,`` / 1 , \ / , 1 o C-20 0 -- - \ ,` \ ,` , ` `` \'` `, �\ `, `, `, `, 3.05 SILT FENCE SF X X- r C-41 CN=0.65 / 1 4 ; '------, `\ `, 1 1 ; '` \ \ `\ '`\'\\'\\ � ii I '1 \ � ` \ ` ` � ` ` PROPOSED LOCATION: �J --_' •, A-20 ', � - `\ `, ;1 I ',1 \ ',` `1 ``I \ ` , I /� ---- '`, `.; '; nos c21 - . ;'LANDS n/Fj ) 1 1 '1 '1 ', \ 1, `, '1 \\\\�` SEMINOLE TRAIL o cN=oso / 0 ` 0B ' srM ?A7VCE"S'8REEDEN r6R/C'K/Y 4D 4ND 1 STORM DRAIN AND ASHWOOD BLVD. !M/LLARD HOdYARD B%'K/lEAlj /' / l 1 `, '` '` `` \ `` 3.07 INLET PROTECTION Ip CHARLOTTESVILLE, VA22911 CN=oso STM _ FAMILY TR/ST% Ei l 1 1 ❑ ALBEMARLE COUNTY, VA � I STM I / ___ -20 v ' yr 'yA1�/ 1 I 1 \ 1 \ r J. O ` ' `\ \` - sTM C-30 -- 1 /11s' 1 --------------- ----------"---- N � P/D. C?4600OOT000 ✓ , . TM .J W ZONING• R1REI`, , 1 08 CULVERT INLET PROTECTION RN Cl USE- S/NM E/,EFIA B 0 H L E R / , 01 TM ' , , rn STM , " � ' �_- i / % / i' I o - STM `• -�-------- 1 ; ; ! I ;' ;' ;' ; `, \\,1\\` 1 i C-30 - 478 67 FEE 4V.67 9g0 FEE = 483.1'R %' F E = 81.00 p0 A-32 FEEf 1-f II II I ' i I i ' \ \\ \\ `� 3.18 OUTLET PROTECTION Op C-11 GFE=478.00 d. GFE 482. 10 - % ! ' ' P ' GFE=,4 906 - SFE= 81._00 II II II II II II , , \\ , \ ❑ 91 R MON VIRGIN! 232 6 60 0 GFE - 482.56 / PEE = 480.33 I 1 I \ \ hone: D 804 893-8200 3 = n n II I ''` __ `. •_ -_ \ II II I II II II \ '`, IC t ) C-00 b, I `y II II II ' FEE = 482,50 ' ' FFE - 7,9.33, � - II II FE = 478.00 FEE 2,33' GFE = 4M 83 ; ' , GF = 479.67 nqg ,FFE 479.00 - `FFE = 480.00 1 II III CN=0.85 E = 477.33 GFE 48L33' /' GFE = 4�8:33 GFE = 480. 3 VA@BohlerEng.com I I .II II II - FFE = 477.33' F 4 33 FFE=,481.83I' / / ; 1' / Fl 7,9.67,' / ' II II I , 1\ \ \ , , , 60 , F�=478�3 ,, FFE �478.3 I I , \ `\ \ :33:1] TEMPORARYSEEDIN¢ _ , GFE -481.1 `,GfE = 79.0b b , GFE = 477.6 B-10 \GFE='479.67 II I ' `I \ `\ ``` TI Q V. I II II II Ij I FE - 476.6T' D-1 O GFE 48b.67 D-2O / 1 B-3O -- II II , , , I ` TS F` C-40 FFE = 4811 7 i / i i F = 17 II II \ -dl II II II I FEE = 476.67` ,FEE = 480.67 , , , I FFE 477.67 FFE = 479:67 II p I 1 1 w GFE = 476.00 GFE, 480.00 Gf/E = 480.50 I ; i , ¢FE, 7$1J3 _.GF_Fc 77.00 CN=0.85 Fl 479.0d ` 11 II II II I - CN=0.15 i CN=0.10 I CN�.83 II = CN=0.80 CN=0.85 1 I FEE = d3'\6.00 FEE = 480.00 FFE = 48b.50 I 1 1, , p , FFE = 78.3 \ FFE 7.0� a \FFE='N,79.00 I II ; `, `\ 3.32 PERMANENT SEEDING ((++ 0 II \ ❑ PJ pS V N YA R 1 F &I FE = 475.33 ; GFE 4�9.33 IGFE = 419.83 GEE A77. 7 , ¢�6 `GFE - 476 3 GEE = 4j8.3�3 II II II II II II II `` `` Lic. No. 0402056625 16 I �' I III I� ij II �� II jl I '`\ `\ \ '\ \\ ,Q FEE `0. ' � , FfE 77.67 ;'- s \ 1 , , , , FFE 478.33 II II II , , \ \ 1 I11 I I \ \ 1t�FE 1 � 1 I 1 1 1 I ; I II II Ir 2 _ --- ,CiFE� 4.67 GFE 478?67 GFE = 479.17 ` , `\ , 1 47 .00r , / GFE �475.�7 GFE = 477_fiZ FFE\,\4k4i17 '\ FFE = 47 FFE = 479.17 `,\ '; '\\ ', 7�b0, "' FFf = 475.67\Tp 1 1 TREE PRESERVATION A 10/07/2021 AND PROTECTIONGFE = 478.50 76\33\ ,' , GFE 47$>00 GFE = 47T.00 II II II II II II II `, `\ O ss'ONAL I I I II I `, , D 20 1' ' i \`I `\ 1 SHEET TITLE: STM 1 \ ST -'ice I \ 11 3.39 DUST CONTROL DC �C OVERALL -� ' 1�' o \ � B 10 ` $ S \ J I IL JI-I 1L-JI '`I I ' \ r 1 I ' ` B20 �� - I���-I-�I �I I ' ` F-10 / STM S S S ' S S, , $T G-20 EROSION AND 480 482 ',p/pf i i 11 , I , ' 466 \``\ `' 1\ '` •,` '', G 10 ' ,' ; ' \ p.5 ,9B01iE -ROE Q ;' ;' 1 SEDIMENT ion a�oN �R�a _ �- ONTROL PHASE ► 1, I / i `, , 1 I \\\ 1 1 \ ---- _,= ALAND-CD_MMON ]tREA ________- \ \` I \ \` Li3CK ✓-` MOD PfJASE \ - \I LOT 17 I 1 1 \ \, - fjfJq�/p.-jQ/y�1//f E.S•-- ,______ - kOOk ✓-_T2_MWpOD PHASE 2 SHEET NUMBER: 1 1 ---------- \ _ _ _ FORRLA SBUTfT ; "" 1 , --- '----' -- - i i \ `� `. FORE .LAKES �OUTh' ``,I '`, '\\ '`.\ ` ------- ��.1AKES UTH I I: -�B. F4 7 P�"35B '' ' :�'`.'`.``.`\ �' ` 0.8'`db'4 2NPI 383`` ' J -610 ZONING.- i PUO (FILANN D UNIT DEYELOP�ENT� I `` �\' ,' ; `.; ` \ £171WiY SE. s/NGLE �1/ZYUN%'ES/DD It3� Nr�\L \ LdT �6 ZONING.- PUD (PLANNED UN EP ZORWNT / 60 30 15 0 60 S/NpLE FAMILY RES/DENT/AL, ,8� _ -- / ,� ` , \ D�X(1 \- Ali ow PHAS�(z2USE._ SINGLE �ibbllLY RES/ `NT/AL `.� A' \ \. \ \'`'t ^ i� \ F�i14/SSTVAKFS )F'OUTH 1 60' ORG. DATE - 10/7/2021 a' 0: A 90 49L PS\ 100 f A \� , 100 \ \ \fI'' IQOOQ PI�PE�'JY XrV!/ES�tMEN CN=0.05 AC 0.85 ``,``'` `., ``♦ ``, ``♦ \ 0.5. .97e c 3e0 I \ yP�/I� 04600\00-00-0�41 STM - . . n \ ♦` . LYN E` /� - -- "' CN=0.85 \\ LLSE°\` R ES $NT /pE L;IL IN A-90 \ ♦ ` /N�L �,FA Y R� /DE . 'IN\ , ` `` , IN PS STM ._t E� TP ```, ```, \ `� ,` `` `\ \ `\ ```\ ``\`♦ ``\It PS 1 , ) ` , , , I I , , , , P illl illl �I,` I,`` 0.17 AC $F\II, `'I I 1``I ``I,I ,/,' / 11`/) ,''; ,'' II `` , `` `` `` `♦ \ CN=0.85 ' �\ CN=0.80 ` `, STM ; SF / ' h BUILDING 3 A-71 $TM; ; ; : , CN=0.80 A 70 / / I ♦`♦ ♦ ' STM ` CC-2 \ CN=0.80 \ , ' ,,� ;/ a°° - TP '',, \ , CN=0.85 _ ' TP ' BUILDI , � •.a , 1 I II i � _ FFE = 0.25 / 4a6 I 1 I 1 1 1 { P `. -60 - \ o so2 ' P$ A_2 mo TOO , � PS , 3 -IN o ; --- -. CN 0.8 0 - A631 A.62 $TM �- - --- - �.._ _'--- � •� TP $F �\ IP \ `, CN=0.85 ZZ J- _ _ -- --- 4� 1 �- D P TE � 1 � \ / _ '`♦ _.498 CN=0.90 1 / FMATCHLINE —SHEET C-612 's ' ' LMATCHLINE. SHEET C-613 i ■ / IN , T/ / i � i � %. is ' ,� �. /�,.' � ) I' 11 ; ♦ i' 00 ------------- 1 ( t ' �`♦ \ SEE INSET �\ / / / / / _____'i i / / / , ,-� / \\ ♦\ \ \ 'SHEET C-614 IZ \.`.`------- __ `. ,' _ --, f' ,i / , , , / , , , , I _ ``,p \ �s IN ♦♦` \ \ ♦ i / ,/ ,C - .i7�/11=47.k79 - �_� TP i i l 1 ` `` `` \ \ IN " ��� `;1 `• IN 00" IN IN I _IN --------------- �,IN ST nON\ \ \ li l,\`♦ ( �Q - ,` / 7F&PORARY G17NS'IRUC ``� ,\ `� \ \ ♦` `, `, , ,, `` �\ _- ------------- 0 //'�`'1\\\♦` ``� 11 � �)O�Ep --- � ' 7'� fNTR�,fMENT \ � `♦♦ \ �\ `\ \ `� `,✓/I\ \ \ `♦ \�`♦\`, `\ -___ - \ \ \`\``•___ 1\\ 1 1 P1 PST �/ \ 1\/+ \ \ \ `, \ _ `` \\ IN I IN IN --------------------------- _ IN — _. ° !y' --" - `\ -`j �_484 _ TP`—480-�'`.� �`♦` `♦\�``♦\ \ '`IN \\`-_,--`\`\\ °/' �``�` ` \ ``♦ \ IN ------- - /`° H 10 --- PS 2659k°p°o CN=0.60 or - tv' 4� \ X ---------------- VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL 3.01 SAFETY FENCE SAF 3.02 TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C E SILT FENCE SF —X—X- 3.07STORM DRAIN INLET PROTECTION Ir 3.0$ CULVERT INLET PROTECTION Clr 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDING PS PS 3.38 TREE AND PRO ECTIONION TP TP E DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' — 3 \ 5� i� WC_ Z_ EE a c W Z F 2' Wzn z W (7g(F-S28< Q Z Iy1 Ww j W ~ U) g3 F W Q 2 W Z >zUW<4Q ai��aQzQ zcn2WzFF _ Of Oz<aHQ 0�UUUD'U WLL Z 00 ��,/^� W a€ J c U ~ ou O 6 WC H �9 W� f REVISIONS REV DATE I COMMENT Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OBP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH OFl. Z V N YA R y .p Lic. No. 0402056625 �3A 10/07/2021f11t1�� `SONAI.E�G� SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE It SHEET NUMBER: C-611 ORG. DATE - 10/7/2021 1 1 1 11 / / / / / / / I i 1 i 1� 1 1 1 1 , I I 1 / I I 1 I I I \ I 1 1 i I 1 I 1 I 1 I / LMATC H L I N E - SHEET C-401 TPIN: c _ �< o _ SF IN -- ----- D PSTE i IN 1� 498 _ __ 96 'Al IN -- may, 1 PS PS , 1 1 , 1 -_ A-64.1 1 , 1 - ---------------- I ` ' ---------- ' 9 I , ' /------------------- ' -5 .I -- ------ PS o � PS 1 - 1 / \ \ 40 � 1 ` 1 1 9 - _- _490 -- _ ' STM A 64 PS TP P OE3\P 65 --- ------ - DC I / �ybj�kkk�y��yyy " ,90 PS ------------- ------- S CN=0.85 \ ` \ _ 1 _ ti\R FONNTI\ I �' \ ;' IP q8 TM M 70WC-21 :IN I I, I I IN 1 4 " --- III" = -- n -�� 11 111:1- / 'IN 11` 90 \0.44 AC O / DC / \ \ I _____--_ _ 1 / , --------- MAC CN=0.80 II'I , \ 1 -- C 41 CN=0.65 l , I \ 1 1 IIW '` \ - ' i / ca N. IN 19 8 IN / RIA4 . \I 1, CN=0.60 --- " P$ PS 14011'IQM�4 .1 \ IN ' AZARD ✓ I\ `\ 1`\ `, I1 ', ' MATERIALS S 1 p `\ �. STORAGE \ AREAC-20 STM IN ' STM i ' I 7111- ia 19, DETE GENfiS, SOLVENTS, ' IP 9 Ip ' ;' I \ AND WASTE WATER OF C NS1jRU TION EAAMENTITIES 0.48 P C J _ 1 W W W ' W = W /W W CN 0.80 ' _ ' ISLE FUELING A ND SPILL 'S - -7 - a T INMENT IP OCE " y C-30 AREA & STM PORTABLE C- i r FFE = 478.67 FIFE = 483.1 5 TOILETS - / FIFE = 4 2,67 GFE = 482.5 C-1 0 jSFE=478.00 - 2.00 ' it C-40 1 \ ,' CSNCRETE WA HO I I PS ` ♦ IN \ AREA II II II II 0.08 AC FFE = 482.5Q' FIFE = 478.00 GFE FFE = 4 200 GF= 477.33 DC = 1.33EE--"II GFE = 481.83 / CN=0.85 1 , " I __ -Qa 1 I �;1 II ' I' \ �♦' '♦`,��;1'' ♦�!:`-` - --FE=477.33 ' FIFE: '♦' FIFE -' 481.83 481 IN, GFE=476.67 GFE,�481.17 .6 QD-20CD-10 / ; l II I .I I I FIFE = 476.67 GFE SF II II II II/481.17'FFE = FFE=4 0.67 GFE GFE=480.5Q=476.00 / = 4 0.00 0.14 AC i l l O 1 1 ; ♦` j j 1 I �; I ; CN=0.75 CN=0.80CN=0.83 -___J 11 FFE=480.$0 SF FIFE = 475.FIFE 4GFE = 479.133GFE = 4733 470.33 I ' ' ' i ' ♦ ``` i i ' i II II Ih--�-i-`q-_ ____ __ PS '� 1 1 -- - --- _``♦ I♦♦ FE =45.33 '\\ ' FIFE 479.33` `\ j1 FIFE - ' 1 479.83'GFE =479.17i4.67 GCEGFE 478.67 IN FFEIF: \.67`GF\ `, Ali FIFE =478.67 GFE FIFE =47Q.17 GFE = 47>j.50 I I I I I IN, = 478.00 STM _LL J / D20 i ----JI I 1 STM / / / i IP `I 1 1 1 1 `I I P `,LF fT /NC / F-10 I\ S S S S , S ' S- \♦`l/M-P6p56p2 4V50. 1L D-10 1 I1 IN IP ��; I ' 1i I i 1'1 'i i ' 1 / �, �t VV// .... I I 1 I I /N(/A- 55,E I ` '` /ND,' 9= \ \ 41 TpSIF 1 1 / 5- )4-UU"VV TP .yO f S S °55'54"W 1 26.24 ) _ , VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL 3.01 SAFETY FENCE SAF 3.02 TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C E SILT FENCE SF -X-X- 3.07STORM DRAIN INLET PROTECTION Ir 3.08 CULVERT INLET PROTECTION Clr 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDING PS PS 3.38 TREE AND PRO ECTIONION TP TP E DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' (� Z_ EE W W W Z W WLUZ W Wzn j W Hwot'EM) F W 2 W Z -j>z0LUW 2 7 2 Q Q Z Q 02 W zp: UzQQa~O Q J z W Z d > a < of O U W REVISIONS REV DATE I COMMENT Di Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OBR-O PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _1 LTH A SIL FM%N YAIJ ER Lic. No. 0402056625 1 10/07/2021 -J SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►► SHEET NUMBER: C-612 ORG. DATE - 10/7/2021 n ` PS - - - A6 TP A 62SF - 7 CN=0.85 0.41 ' - D PSTE - _ CN CN=0.85 q=0.90 i g8 = , IP /- STM A 11 b96 t P34 _ S � O A-64 . 1 -- = '' S6 / =/ ----------- -- IP CN=0.75 �\ A-63 �' ,�----------------- BUILDING 1 FEE = 487.50 A-63 / ATCHLINE - SHEET0.15 AC C-611 H-L3 CN=0.80 IN ZJ AL; CN=0.85 , I \ \ \ 1 \ A-50 - , 1 --1 \ PS \ ---- ' PS \ \� \ - CN=0.90 -a - rj CN=0.90 - 51 0.10 AC a / A-64 ----- CN=0.80 1 ' I I IP / 5 CN=0.85 Cfl 1 I I 1 1 UI I I W W I WPS Z J W A-41 0.08 AC 1 1 , ---- --- - CN=0.80 1 / / 1 1 1 � , 1 1 A-33 8 1 / , JIM �O CN=0.90 36 I ILL 3 ' / ! % / 1 FFE=483.17GFE ;� / /FFE=4 1.00 GFE, ; = 482.50 ' ,' ' / �' = 4 6.33 /I I / / FEE = 482.5Q' ' ' %� FFE/= 4 7-4 / .33,GFE GFE =481.83 .§'� FEE �481.83 FFF=4 =4 .67'GFE 0 / GFE,'= 481.17 / III'I / , D-20 ' /" '' IDC B 30 ; ,'FFE=481.17, / ,,FEE=4 .00 GFE / GFE = 480.5Q' ; I 7 / _ i .33 C N=0.80 CN=0.70 ; FEE = 480.$0 ; ; , v ; ;' FEE = 4 8.�3 GFE GFE = 479.63 ; I 'i ', I i i = 4 7167 , `\ \` ', '1 I '1 FEE = 4 7.67 GI/E �I FEE = 479.83IGFE ` I 11 1 FEE = 47q.17 FEE, t 4 �0 GFE GFE = 47$.50 `\ i ` ' 1 '� ' i '\= 4 33 \ `, STM D-20 r I I I I \I• ' I , , ', r A , _ S S S , S SF X \ \ \ - \ - -- -- -- ' , -------- 11 A-32 A-31 0.15 AC CN=0.90 ` A3M CN=0.85 STM A-50 \ \ 1` I 1 \ 1\ 'I A-22 I A-40 CN=0.90 BUILDING 2 I S FEE = 487.50 0.08 CN=0.90 )____STM♦\ \\ � ��,\` ♦♦ I -- A-32 FFE = 479.67 61=E- DC FEE = 481.67 GEE 479.00 - - \ = 481.00 I 111 1 \ I II 'INI - _ PS \ - I ------ - II FFE = 479.110 GFE '- I � ---,7E = 481.00 GfE \ \ 11 = 478.33'-_ -- IN -' ; = 480.33 \ ,`♦ 1 1 � I I II ' FF€ - 478.33 GFE,, l R 1 - u 0 FEE = 478.33 GFE Z = 479 �I I I ♦ 1477.67 \67 \ r I I I I II \\ FFEF 47\7.67 GFE FEE = 479.67 GFE ``♦ I I 47i..00 CN=0.85 = 79DD \ 4 - - FEE = 4' 7.00 GFE `\ FEE = 479.0,0 GFE `\ = 4 .33 - \` = 478.3$\, I \`\` ` IN I u I `\ ,IN \ pS \\ \`♦ I I II \ FFE = 476.33 GCE `♦ , FEE =A78.33 GFE\ I 1 475.67 \ `\ = 477.67 I % 'FFE = 475.67 GFE �`\ � =475.00 \ _ _FFE = 477.67 GFE --=47T.00------- `♦ �` II ♦` \ I I I \ 1 II o `, y ♦ m -10 �S�S S STM S SBA'` II II STM \ B-10 - ♦`- o \ pS \ STM ---------------------- '` ` GG-2p \ -r---------- , a � , 1 iS STM / ------------ IN, ' IN I \ \\` \\ �\ . LANDS IVIF IN \ PETE'� A. I ZO�Q/S i N,9 1�/ERA*1A Z06K NN \ \ I D.R.690 P6'\,507 '` - `,P/4- O} 600 ' 00-09-028,40 \ ZION/(l/G RI`, (RESIQENT/ALf ,, �/S ShyGZ� FATLY RE' (DENT/AL \\ \ I \ SF \ I \ 1 I � I � I S \ I _ 1 \ \ -------------- , TP \ -------------- LANDS N/F %1 / PRANCES BREEDEN BR/CKHEAD ,AND V I RG I N IA U N I FO R M CODING SYST E M W/LLARD HO8ARD 9R1C1(HZAp FOR EROSION AND SEDIMENT CONTROL PRACTICES FAMILY 7A�15T, ET AL I W.B. 128'IPO 719 P1D.• 04600-0-00-028✓0 NO. TITLE KEY SYMBOL ZONING.- R1 (I'ESIOENT/AL) U TP SINGLE FAMILY RESNENrIAL ; 1 I ' SAFETY FENCE SAF SF , , I i A-1U i TEMPORARY STONE (1[ C\E __ ____ _ CONSTRUCTION ENTRANCE II II II II II II ', 'I, II II II II II I� I % '1 11 3.05 SILT FENCE SF -X-X- 1I STOM DRAIN to II II II II II I� N fv� ', \ 3.07 NLEETPROTECTION IP II II II O N W , E-10 11 II 1 ♦```' On 3.08 CULVERT INLET PROTECTION Clr II II II II I II II I� PS 0.32 AC CN=0.85 I II II II II II I� II II j1 II II II II II II l II II II II II I� II II j1 II II II II II II II II I II II j1 II II II II II II l II II II II II II II II II II II II � �, II II II II II I� II II II II II II II II II II II II II II II II II II II II II II II I� PS ` _JL_J1 II II__II__I1 -� Ij 1C7 --- N ---- -J \ 10 001�001 IN po,gA' 10 5.9T � ;. TP -- \ -- -- � .- " -- 1 , I I 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS 1 , '1 3.32 PERMANENT SEEDINGTREE PS PS 3.38 AND PRO ECTIONION TP TP I , I , I I I I I , I 1 I I I 1 "IRON PIPE FOUND / SF 0.5'ABODE GRADE TP E DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' O z E W W W rn z W W U z Z U U Z CDgW H Ur W > WU-UW r (DZOW W2D'W5W z�W F W>QzU2oWWW E6 m? Q Q Z QP i ZU)2 W ZFH 0zof<L of 0 Q J z W Z d z > aJ O U W Cal I REVISIONS REV DATE I COMMENT DI Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OBR-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH OFl. z V N YA R y .p Lic. No. 0402056625 ��A 10/07/2021 t1�� �`S'S/ONAI.E�G� SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►► SHEET NUMBER: C-613 ORG. 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TITLE KEY SYMBOL SAFETY FENCE E SAF 3.02 TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C E SILT FENCE SF —X—X- 3.07STORM DRAIN INLET PROTECTION Ir 3.06 CULVERT INLET PROTECTION Clr 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS R PERMANENT SEEDING PS PS R AND PROTECTION ION TI'1 TP TREE R DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' W W 2 rU) V z_ LU EE w w I11 z w W z1Z0W� z ZDZ02 Z W W 2 j W zrc9�oWm z:1 >W w z z3w<np mim? Q Z Q ZU) LUZFF 0z¢¢¢~O x ¢ J� w Z a¢ > o z < of O U w H REVISIONS REV DATE I COMMENT Di Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: OBP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _1 LTH A FM%N YALI ER Lic. No. 0402056625 1 10/07/2021 _J SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►► SHEET NUMBER: C-614 ORG. DATE - 1:j W n EROSION CONTROL MINIMUM STANDARDS MS-1: PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. 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 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE (1) YEAR. ACTION: SEE EROSION AND SEDIMENT CONTROL NARRATIVE, SECTION X. PERMANENT STABILIZATION. MS-2: DURING CONSTRUCTION OF THE PROJECT SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT 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. ACTION: STOCKPILES SHALL COMPLY WITH MS-2 BY PROVIDING SILT FENCING AROUND THE BASE OF THE STOCKPILE. TEMPORARY SOIL STABILIZATION MEASURES NOTED IN MS-1 ABOVE SHALL COMPLY. MS-3: A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE 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. ACTION: SEE EROSION AND SEDIMENT CONTROL NARRATIVE SECTION X. PERMANENT STABILIZATION. MS-4: SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. ACTION: SEE EROSION AND SEDIMENT CONTROL NARRATIVE, SECTION VIII. SEQUENCE OF CONSTRUCTION, PHASE I. MS-5: STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. ACTION: EARTHEN STRUCTURES SHALL BE STABILIZED USING TEMPORARY SOIL STABILIZATION MEASURES AS NOTED IN MS-1 ABOVE SHALL APPLY. MS-6: SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. a. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. b. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A 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. ACTION: THE BASINS AND TRAPS HAVE BEEN DESIGNED TO ACCOUNT FOR THE ENTIRE DRAINAGE AREA CONTRIBUTING TO THEM. THE APPROPRIATE SIZING AND STORM CRITERIA HAVE BEEN USED IN THE DESIGNS. MS-7: CUT AND FILL SLOPES SHALL BE ASSIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE (1) YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. ACTION: THE CONTRACTOR SHALL STABILIZE THE ULTIMATE CUT AND FILL SLOPES AS FINAL GRADES ARE REACHED. MS-8: CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. ACTION: CONCENTRATED RUNOFF WILL BE CONTAINED WITH AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL. MS-9: WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. ACTION: ADEQUATE DRAINAGE AND PROTECTION WILL BE PROVIDED. MS-10: ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. ACTION: ALL STORM SEWER INLETS WILL BE PROTECTED DURING CONSTRUCTION. MS-11: BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. ACTION: ACKNOWLEDGED. MS-12: WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. 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. ACTION: NOT APPLICABLE. MS-13: WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX (6) MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NON -ERODIBLE MATERIALS SHALL BE PROVIDED. ACTION: NOT APPLICABLE. MS-14: ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. ACTION: NOT APPLICABLE. MS-15: THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. ACTION: NOT APPLICABLE. MS-16: UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: a. NO MORE THAN 500 LINEAR FEET OF TRENCH SHALL 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 OFFSITE PROPERTY. d. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. e. RE -STABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. f. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. ACTION: INSTALLATION OF UNDERGROUND UTILITY LINES SHALL COMPLY WITH MS-16. MS-17: WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD 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. ACTION: A CONSTRUCTION ENTRANCE WITH WASHRACK HAS BEEN PROVIDED. MS-18: ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE 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. ACTION: SEE EROSION AND SEDIMENT CONTROL NARRATIVE, SECTION VIII. SEQUENCE OF CONSTRUCTION, PHASE It. MS-19: PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA: 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 OR PIPE SYSTEM SHALL BE PERFORMED. b. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: (1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR (2) (a) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO (2) YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS; AND (b) ALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN (1 0) YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS BY THE USE OF A TWO (2) YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS; AND (C) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN (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 CHANNEL TO A CONDITION WHERE A TEN (10) YEAR STORM WILL NOT OVERTOP THE BANKS AND A TWO (2) YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR (2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN (10) YEAR STORM IS CONTAINED WITHIN THE APPURTENANCES;OR (3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWO (2) YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TEN (1 0) YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR 4 PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT STORMWATER DETENTION OR OTHER MEASURE WHICH IS SATISFACTORY TO THE PLAN -APPROVING AUTHORITY TO PREVENT DOWNSTREAM EROSION. d. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS. e. ALL HYDROLOGIC ANALYSES SHALL BE CASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT OF THE SUBJECT PROJECT. f. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION HE SHALL OBTAIN APPROVAL FROM THE LOCALITY OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE. g. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATERS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL. h. ALL ON -SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE. i. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY. j. IN APPLYING THESE STORMWATER RUNOFF 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. ACTION: IT IS THE OPINION OF THE ENGINEER THAT THE EXISTING STORM SEWER IS ADEQUATE TO CONVEY STORMWATER FOR THIS SITE. I. PROJECT DESCRIPTION: THE SUBJECT SITE IS LOCATED ALONG US ROUTE 29 SEMINOLE TRAIL ROAD AND ASHWOOD BOULEVARD THE TOTAL DISTURBED AREA FOR THE WORK PROPOSED WITH THIS PLAN IS 18.55 ACRES. THE PURPOSE OF THIS PROJECT IS TO CONSTRUCT FOUR (4) APARTMENT BUILDINGS AND SIX (6) STRIPS OF TOWNHOMES, AS WELL AS AMENITY AREAS AND ASSOCIATE PARKING. TO SERVICE THE PROPOSED DEVELOPMENT THIS PLAN WILL ALSO INCLUDE THE INSTALLATION OF SANITARY SEWER, WATER LINES, AND STORM INFRASTRUCTURE THAT WILL SERVE THE PROPOSED PARKING AREAS. THERE WILL ALSO BE TWO (2) UNDERGROUND DETENTION SYSTEMS WITH AN ISOLATOR ROW PRETREATMENT STRUCTURE CONSTRUCTED WITH THIS PLAN. THE TOTAL PROJECT IS ANTICIPATED TO TAKE EIGHTEEN (18) MONTHS TO COMPLETE. II. EXISTING SITE CONDITIONS: THE EXISTING SITE CONSISTS OF ABOUT 4.05 ACRES OF IMPERVIOUS AREA WITH SEVERAL TRAILERS AND GRAVEL LOTS SURROUNDED BY DEVELOPED GRASSED AREA. THE REMAINDER OF THE SITE CONSIST OF MOSTLY WOODED AREAS. EXISTING GRADES ON SITE ARE MOSTLY BETWEEN 0 AND 50 % WITH SEVERAL AREAS OF PRESERVED STEEP SLOPES AS INDICATED ON THE PLANS. THE TWO PROPOSED PARCELS WITHIN THIS PLAN DO NOT CONTAIN AREAS OF THE 100-YEAR FLOODPLAIN, AND NO WETLANDS OR STREAM CORRIDORS ARE IDENTIFIED. III. ADJACENT PROPERTY: THE SITE IS BORDERED TO THE NORTH BY SEMINOLE TRAIL, ROUTE 29 TO THE EAST BY SINGLE FAMILY RESIDENTIAL PARCELS, TO THE SOUTH BY THE FOREST LAKES RESIDENTIAL DEVELOPMENT, AND TO THE WEST BY ASHWOOD BOULEVARD. IV. OFFSITE AREAS: THE PROPOSED PROJECT HAS BEEN DESIGNED TO MINIMIZE THE IMPORT AND/OR EXPORT OF DIRT FOR THE SITE. HOWEVER, IT IS ANTICIPATED THAT THERE WILL BE EXCESS FILL NEEDED TO BE TRANSPORTED ON SITE DURING CONSTRUCTION.THE CONTRACTOR IS RESPONSIBLE FOR COORDINATING ANY DISTURBANCE OFFSITE AND FOR ANY REQUIRED PLANS AND PERMITS THAT MAY BE REQUIRED. V. SOILS: A STUDY WILL BE PREPARED AT A FUTURE DATE. PER THE USGS WEB SOIL SURVEY, THE SOILS OF THE SUBJCT SITE ARE ENTIRELY HSG B. VI. CRITICALAREAS: THERE ARE SEVERAL EXISTING CRITICAL AREAS ON THE SITE INCLUDING AREAS OF PRESERVED SPLOPES. APPROPRIATE MEASURES HAVE BEEN BUT INTO PLACE TO MINIMIZE THE IMPACT TO ALL CRITICAL AREAS THAT ARE IN CLOSE PROXIMITY TO THE PROPOSED PROJECT AREA ASSOCIATED WITH THIS PLAN. VII. EROSION AND SEDIMENT CONTROL MEASURES: UNLESS OTHERWISE NOTED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH). THE MINIMUM STANDARDS OF VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE. SPECIFIC EROSION AND SEDIMENT CONTROL MEASURES UTILIZED IN THIS PROJECT INCLUDE THE FOLLOWING: 1. SAFETY FENCE -3.01 • A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. SAFETY FENCE SHALL BE INSTALLED AROUND THE LIMITS OF DISTURBANCE TO PREVENT PEDESTRIAN TRAFFIC ON SITE. 2. TEMPORARY STONE CONSTRUCTION ENTRANCE - 3.02 • A STABILIZED STONE PAN WITH A FILER FABRIC UNDERLINER LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. 3. SILT FENCE - 3.05 • A PROTECTIVE BARRIER TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE. 4. SUPER SILT FENCE- N/A • REINFORCED SILT FENCE TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PRESENT SEDIMENT FROM LEAVING THE SITE. 5. STORM DRAIN INLET PROTECTION - 3.07 • A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. 6. CULVERT INLET PROTECTION - 3.08 • A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS. 7. TEMPORARY DIVERSION DIKE -3.09 • A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. 8. TEMPORARY SEDIMENT TRAP -3.13 • A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET. 9. TEMPORARY SEDIMENT BASIN - 3.14 • A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. 10. TEMPORARY SLOPE DRAIN - 3.15 • A FLEXIBLE TUBING OR CONDUIT EXTENDING FROM THE TOP TO THE BOTTOM OF A CUT OR FILL SLOPE. 11. OUTLET PROTECTION - 3.18 • STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT 12. TOPSOILING - 3.30 • METHODS OF PRESERVING AND USING THE SURFACE LAYER OF UNDISTURBED SOIL, OFTEN ENRICHED IN ORGANIC MATTER, IN ORDER TO OBTAIN A MORE DESIRABLE PLANTING AND GROWTH MEDIUM. 13. TEMPORARY SEEDING -3.31 • THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. 14. PERMANENT SEEDING -3.32 • THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. 15. SOIL STABILIZATION BLANKETS & MATTING - 3.36 • THE INSTALLATION OF A PROTECTIVE COVERING (BLANKET) OR A SOIL STABILIZATION MAT ON A PREPARED PLANTING AREA OF A STEEP SLOPE, CHANNEL OR SHORELINE 16. TREE PRESERVATION & PROTECTION - 3.38 • PROTECTION OF DESIRABLE TREES FROM MECHANICAL AND OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. 17. DUST CONTROL - 3.39 • REDUCING SURFACE AND AIR MOVEMENTS OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. ALL MATERIALS INDICATED ON THESE PLANS SHALL CONFORM TO THE SPECIFICATIONS AND INSTALLATION GUIDELINES SET FORTH IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (LATEST EDITION), AND THE DETAILS AND SPECIFICATIONS SHOWN HEREIN. VIII. SEQUENCE OF CONSTRUCTION: PHASE I SEQUENCE OF CONSTRUCTION 1. OBTAIN ALL REQUIRED PERMITS. 2. ATTEND PRE -CONSTRUCTION MEETING. 3. CONTRACTOR SHALL CONTACT JURISDICTION AT LEAST 1 WEEK PRIOR TO COMMENCING CONSTRUCTION. 4. CONTRACTOR SHALL STAKE AND FLAG LIMITS OF DISTURBANCE. 5. CONTRACTOR TO USE THE EXISTING ENTRANCE ON SITE AS CONSTRUCTION ENTRANCES PRIOR TO GRADING AND INSTALLING THE PROPOSED CONSTRUCTION ENTRANCE ALONG ASHWOOD DRIVE. 6. DEMO ALL FEATURES NEEDED TO INSTALL ALL PERIMETER CONTROLS. 7. PERFORM GRADING SHOWN IN PHASE I TO INSTALL THE CONSTRUCTION ENTRANCES PRIOR TO THE START OF ANY MASS EARTH MOVING ACTIVITIES. 8. CONTRACTOR TO GRADE AND INSTALL ALL SEDIMENT TRAPS AND SEDIMENT BASINS AS SHOWN IN PHASE I OF THE EROSION AND SEDIMENT CONTROL PLAN. 9. CONTRACTOR TO BEGIN MASS EARTHWORK OPERATION TO REACH PROPOSED PAD ELEVATIONS. AS THE EARTHWORK OPERATION IS BEING PERFORMED CONTRACTOR TO ENSURE THAT ALL TEMPORARY DIVERSIONS ARE MAINTAINED TO KEEP RUNOFF DIRECTED TO THE EROSION AND SEDIMENT CONTROL MEASURES SHOWN IN PHASE I OF THE EROSION AND SEDIMENT CONTROL PLAN. 10. CONTACTOR SHALL GRADE AND BUILD THE FOUR TOWNHOMES PROPOSED WITHIN SB-1 LAST SO THAT SBA CAN REMAIN IN USE UNTIL THE SITE ADJACENT AND UPHILL OF THE SEDIMENT BASIN IS PERMANENTLY STABILIZED. 11. CONTRACTOR TO PROVIDE TEMPORARY SEEDING AND DUST CONTROL OF ALL DISTURBED AREAS AS NEEDED. NOTE: CONTRACTOR SHALL NOT COMMENCE PHASE II OF THE EROSION AND SEDIMENT CONTROL PLAN PRIOR TO THE COUNTY EROSION AND SEDIMENT CONTROL INSPECTORS APPROVAL AND COMPLETION OF ALL PHASE I CONSTRUCTION. PHASE II SEQUENCE OF CONSTRUCTION 1. CONTRACTOR TO INSTALL REMAINING UTILITIES ON SITE INCLUDING PROPOSED WATERLINE, SANITARY MAIN, AND STORM SEWER. 2. CONTRACTOR TO INSTALL STORM INLET PROTECTION IMMEDIATELY AFTER PROPOSED STORM INLETS ARE INSTALLED. 3. CONTRACTOR TO BEGIN CONSTRUCTION OF THE PROPOSED BUILDINGS. 4. CONTRACTOR TO CONSTRUCT THE REMAINING CURB AND GUTTER FOR THE PARKING AREAS. 5. CONTRACTOR TO INSTALL THE PROPOSED ISOLATOR ROW. 6. CONTRACTOR TO BASE PAVE THE PARKING AREAS. 7. CONTRACTOR TO INSTALL THE PROPOSED BIORETENTION FACILITY. 8. CONTRACTOR TO INSTALL ALL PROPOSED SIDEWALKS. 9. CONTRACTOR TO PERMANENTLY SEED ALL DISTURBED AREAS AS SOON AS FINAL GRADE IS MET. 10. CONTRACTOR SHALL KEEP ST-1, ST-2, ST-3A, ST-4, AND SBA OPERATING UNTIL SITE IMMEDIATELY ADJACENT AND UPHILL OF THE SEDIMENT TRAPS IS PERMANENTLY STABILIZED. NOTE: THE COUNTY E&S INSPECTOR SHALL APPROVE PREVIOUS PHASE PRIOR TO THE NEXT PHASE COMMENCING. IX. MAINTENANCE PROGRAM: 1. SAFETY FENCE -3.01 SAFETY FENCE SHALL BE CHECKED REGULARLY FOR WEATHER -RELATED OR OTHER DAMAGE. ANY NECESSARY REPAIRS MUST BE MADE IMMEDIATELY. CARE SHOULD BE TAKEN TO SECURE ALL ACCESS POINTS (GATES) AT THE END OF EACH WORKING DAY. ALL LOCKING DEVICES MUST BE REPAIRED OR REPLACED AS NECESSARY. 2. TEMPORARY STONE CONSTRUCTION ENTRANCE - 3.02 THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOW OF MUD ONTO PUBLIC RIGHTS -OF -WAY. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE OR THE WASHING AND REWORKING OF EXISTING STONE AS CONDITIONS DEMAND AND REPAIR AND/OR CLEANOUT OF ANY STRUCTURES USED TO TRAP SEDIMENT. ALL MATERIALS SPILLED, DROPPED, WASHED, OR TRACKED FROM VEHICLES ONTO ROADWAYS OR INTO STORM DRAINS MUST BE REMOVED IMMEDIATELY. THE USE OF WATER TRUCKS TO REMOVE MATERIAL DROPPED, WASHED, OR TRACKED ONTO ROADWAYS WILL NOT BE PERMITTED UNDER ANY CIRCUMSTANCES. 5. SILT FENCE - 3.05 SILT FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. CLOSE ATTENTION SHALL BE PAID TO THE REPAIR OF DAMAGED SILT FENCES RESULTING FROM END RUNS AND UNDERCUTTING. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE AND THE BARRIER STILL BE NECESSARY, THE FABRIC SHALL BE REPLACED PROMPTLY. SEDIMENT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN THE LEVEL OF DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIERS. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM WITH THE EXISTING GRADE, PREPARED AND SEEDED. 6. SUPER SILT FENCE - N/A SILT FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. CLOSE ATTENTION SHALL BE PAID TO THE REPAIR OF DAMAGED SILT FENCES RESULTING FROM END RUNS AND UNDERCUTTING. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE AND THE BARRIER STILL BE NECESSARY, THE FABRIC SHALL BE REPLACED PROMPTLY. SEDIMENT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN THE LEVEL OF DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIERS. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM WITH THE EXISTING GRADE, PREPARED AND SEEDED. 8. STORM DRAIN INLET PROTECTION - 3.07 THE STRUCTURE SHALL BE INSPECTED AFTER EACH RAIN AND REPAIRS MADE AS NEEDED. SEDIMENT SHALL BE REMOVED AND THE TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE HALF THE DESIGN DEPTH OF THE TRAP. REMOVED SEDIMENT SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE. STRUCTURES SHALL BE REMOVED AND THE AREA STABILIZED WHEN THE REMAINING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED. 9. CULVERT INLET PROTECTION - 3.08 THE STRUCTURE SHALL BE INSPECTED AFTER EACH RAIN AND REPAIRS MADE AS NEEDED. AGGREGATE SHALL BE REPLACED OR CLEANED WHEN INSPECTION REVEALS THAT CLOGGED VOIDS ARE CAUSING PONDING PROBLEMS WHICH INTERFERE WITH ON -SITE CONSTRUCTION. SEDIMENT SHALL BE REMOVED AND THE IMPOUNDMENT RESTORED TO ITS ORIGINAL DIMENSIONS WHEN SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH. REMOVED SEDIMENT SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS. TEMPORARY STRUCTURES SHALL BE REMOVED WHEN THEY HAVE SERVED THEIR USEFUL PURPOSE, BUT NOT BEFORE THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED. 10. TEMPORARY DIVERSION DIKE -3.09 THE MEASURE SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS MADE TO THE DIKE, FLOW CHANNEL, OUTLET OR SEDIMENT TRAPPING FACILITY, AS NECESSARY. ONCE EVERY TWO WEEKS, WHETHER A STORM EVENT HAS OCCURRED OR NOT, THE MEASURE SHALL BE INSPECTED AND REPAIRS MADE IF NEEDED. DAMAGES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY MUST BE REPAIRED BEFORE THE END OF EACH WORKING DAY. 14. TEMPORARY SEDIMENT TRAP - 3.13 SEDIMENT SHALL BE REMOVED AND THE TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE HALF THE DESIGN VOLUME OF THE WET STORAGE. SEDIMENT REMOVAL FROM THE BASIN SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS. FILTER STONE SHALL BE REGULARLY CHECKED TO ENSURE THAT FILTRATION PERFORMANCE IS MAINTAINED. STONE CHOKED WITH SEDIMENT SHALL BE REMOVED AND CLEANED OR REPLACED. THE STRUCTURE SHOULD BE CHECKED REGULARLY TO ENSURE THAT IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION EQUIPMENT. THE HEIGHT OF THE STONE OUTLET SHOULD BE CHECKED TO ENSURE THAT ITS CENTER IS AT LEAST 1 FOOT BELOW THE TOP OF THE EMBANKMENT. 15. TEMPORARY SEDIMENT BASIN - 3.14 THE BASIN EMBANKMENT SHOULD BE CHECKED REGULARLY TO ENSURE THAT IT IS STRUCTURALLY SOUNDS AND HAS NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION EQUIPMENT. THE EMERGENCY SPILLWAY SHOULD BE CHECKED REGULARLY TO ENSURE THAT ITS LINING IS WELL ESTABLISHED AND EROSION -RESISTANT. THE BASIN SHOULD BE CHECKED AFTER EACH RUNOFF -PRODUCING RAINFALL FOR SEDIMENT CLEANOUT. WHEN THE SEDIMENT REACHES THE CLEAN -OUT LEVEL, IT SHALL BE REMOVED AND PROPERLY DISPOSED OF. 16. TEMPORARY SLOPE DRAIN - 3.15 THE SLOPE DRAIN STRUCTURE SHALL BE INSPECTED WEEKLY AND AFTER EVERY STORM, AND REPAIRS MADE IF NECESSARY. THE CONTRACTOR SHOULD AVOID THE PLACEMENT OF ANY MATERIAL ON AND PREVENT CONSTRUCTION TRAFFIC ACROSS THE SLOPE DRAIN. 20. ROCK CHECK DAMS - 3.20 CHECK DAMS SHOULD BE CHECKED FOR SEDIMENT ACCUMULATION AFTER EACH RUNOFF -PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED WHEN IT REACHES ONE HALF OF THE ORIGINAL HEIGHT OF THE MEASURE. REGULAR INSPECTIONS SHOULD BE MADE TO INSURE THAT THE CENTER OF THE DAM IS LOWER THAN THE EDGES. EROSION CAUSED BY HIGH FLOWS AROUND THE EDGES OF THE DAM SHOULD BE CORRECTED IMMEDIATELY. 31. SOIL STABILIZATION BLANKETS & MATTING - 3.36 ALL SOIL STABILIZATION BLANKETS AND MATTING SHOULD BE INSPECTED PERIODICALLY FOLLOWING INSTALLATION, PARTICULARLY AFTER RAINSTORMS TO CHECK FOR EROSION AND UNDERMINING. ANY DISLOCATION OR FAILURE SHOULD BE REPAIRED IMMEDIATELY. IF WASHOUTS OR BREAKAGE OCCURS, REINSTALL THE MATERIAL AFTER REPAIRING DAMAGE TO THE SLOPE OR DITCH. CONTINUE TO MONITOR THESE AREAS UNTIL WHICH TIME THEY BECOME PERMANENTLY STABILIZED; AT THAT TIME AN ANNUAL INSPECTION SHOULD BE ADEQUATE. X. STABILIZATION: TEMPORARY SEEDING WILL BE PROVIDED IN ACCORDANCE TO VESCH REQUIREMENTS THROUGHOUT CONSTRUCTION. FINAL SEEDING AND SODDING INSTALLATION PER THE SPECIFICATIONS PROVIDED ON SHEET C-617 WILL OCCUR ONCE THE SITE HAS BEEN FINAL GRADED AND THE IMPROVEMENTS ARE COMPLETE. XI. STORMWATER RUNOFF CONSIDERATIONS: REFER TO SHEETS C-901 TO C-908 FOR STORMWATER RUNOFF CONSIDERATIONS. XII. CALCULATIONS: REFER TO SHEETS C-901 TO C-908 FOR STORMWATER RUNOFF CONSIDERATIONS. XIII. OTHER IMPORTANT NOTES: 1. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLANS SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 2. 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. 3. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NOT SHOWN HEREON THAT ARE DEEMED NECESSARY BY THE APPROVING AUTHORITY AND/OR SITE INSPECTOR. 4. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING AND GRADING. 5. THE CONTRACTOR SHALL PROVIDE ADEQUATE MEANS OF CLEANING MUD FROM TRUCKS AND/OR OTHER EQUIPMENT PRIOR TO ENTERING THE PUBLIC RIGHT-OF-WAY. WATER TRUCKS SHALL BE UTILIZED IN THE EVENT THAT A PUBLIC WATER SOURCE IS NOT AVAILABLE. IT IS THE CONTRACTOR'S RESPONSIBILITY TO CLEAR THE STREETS AND TAKE WHATEVER MEASURES NECESSARY TO ENSURE THAT THE STREETS ARE MAINTAINED IN A CLEAN AND DUST -FREE CONDITION AT ALL TIMES. 6. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO PERFORM THE WORK IN SUCH A MANNER AS TO PREVENT THE WASHING OF ANY TOPSOIL OR DEBRIS ONTO ADJACENT PROPERTIES. 7. THE CONTRACTOR SHALL ENSURE THAT ALL DEWATERING OPERATIONS ON THE SITE PASS THROUGH AN APPROVED EROSION AND SEDIMENT CONTROL DEVICE SUCH AS SILT FENCING, SEDIMENT TRAPS, OR SEDIMENT FILTER BAGS. EROSION AND SEDIMENT CONTROL NOTES 1. UNLESS OTHERWISE NOTED, ALL VEGETATIVE AND EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (LATEST EDITION). 2. FOR ADDITIONAL DETAILS AND SPECIFICATIONS NOT SHOWN HEREON, REFER TO THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. 3. ALL EROSION CONTROL MEASURES SHALL BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING AND GRADING. 4. ALL AREAS TO BE PAVED MAY BE STABILIZED BY INSTALLATION OF BASE AND SUBBASE MATERIALS INSTEAD OF TEMPORARY VEGETATION COVER. 5. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON -SITE AT ALL TIMES. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES AS NECESSARY TO PREVENT POSSIBLE FUTURE OFF -SITE CONTAMINATION. 7. THE CONTRACTOR SHALL INSPECT ALL EROSION AND SEDIMENT CONTROL DEVICES DAILY. ANY DAMAGED CONTROLS SHALL BE REPAIRED OR REPLACED BY THE CLOSE OF EACH WORKING DAY. 8. THE CONTRACTOR MUST NOTIFY THE LANDSCAPING SUPERVISOR PRIOR TO THE INSTALLATION OF ANY TREE PROTECTION OR PLANT MATERIAL. 9. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN THOSE INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 10. THE CONTRACTOR SHALL PROVIDE ADEQUATE MEANS OF CLEANING MUD FROM TRUCKS AND/OR OTHER EQUIPMENT PRIOR TO ENTERING THE PUBLIC RIGHT-OF-WAY. IT IS THE CONTRACTORS RESPONSIBILITY TO TAKE MEASURES NECESSARY TO ENSURE THAT ADJACENT STREETS ARE MAINTAINED IN A CLEAN AND DUST -FREE CONDITION AT ALL TIMES. 11.THE CONTRACTOR SHALL ENSURE THAT ALL DEWATERING OPERATIONS ON THE SITE PASS THROUGH AN APPROVED EROSION AND SEDIMENT CONTROL DEVICE SUCH AS SILT FENCING, SEDIMENT TRAPS, OR SEDIMENT FILTER BAGS. 12.THE CONTRACTOR IS RESPONSIBLE FOR PERFORMING SITE WORK IN SUCH A MANNER AS TO PREVENT THE WASHING OF ANY TOPSOIL OR DEBRIS ONTO THE ADJACENT PROPERTIES. 13. ALL STORM AND SANITARY SEWER LINES, NOT IN STREETS, SHALL BE SEEDED AND MULCHED WITHIN 14 DAYS AFTER BACKFILL. 14. ELECTRICAL POWER, GAS SUPPLY, AND TELEPHONE TRENCHES SHALL BE COMPACTED, SEEDED, AND MULCHED WITHIN 14 DAYS AFTER BACKFILL. 15. AT THE COMPLETION OF CONSTRUCTION AND PRIOR TO ANY BOND RELEASE, ALL TEMPORARY SEDIMENT CONTROLS SHALL BE REMOVED AND ALL DENUDED AREAS STABILIZED. 16. WORK WITHIN THE RIGHT-OF-WAY SHALL BE PERFORMED IN A MANNER SO AS TO LIMIT THE DISTURBANCE TO PUBLIC TRAFFIC INCLUDING PEDESTRIAN AND BICYCLE ACCESS. ALBEMARLE COUNTY 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 BETAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14.BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:OOAM TO 9:OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16.THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17.TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL 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 1000LBS/ACRE AND CONSIST OF 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 APPROVAL 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 REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20.ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21.THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G.) 22.PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B.) m W J x O m fD Z EE W W Z W N W O ZjZ(AU Z W W W H -U O U � Ur Z W W� j W zrc9-o�m F W Q 2 W Z W Z (n O z U) Q Q Z Q ca2 W ZFF 0zW<a20 H Q J W0 U) W Z Z d Q _J a- Q of J F U W H M) REVISIONS REV I DATE I COMMENT =� • Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. iiiiiiiiiiii PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 10/7/2021 CAD I.D.: ODSO PROJECT VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLER// 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 10/07/2021 SHEET TITLE: EROSION NOTES SHEET NUMBER: C-615 ORG. DATE - 10/7/2021 O SAFETY FENCE 3PL .1T1 PERSPECTIVE VIEW dam: h.`� y.. - 1 1 - 1. 1 •1 N-s WIRE FABRIC '✓ LINE POST 10' IU BRACING = GROUND LINE CONCRETE FOOTING PERSPECTIVE VIEW PLASTIC FENCE SOURCE: CONWED PLASTICS, VDOT ROAD AND BRIDGE BLOCKAND GRAVEL I'1' INLET SEDIMENT CONCRETEWIRE SCREEN 1 ;��w4'4 T❑❑❑ �a'�ii�' GRAVEL FILTER WIRE SCREEN i r,r4w , • 1 ��f,� 1j fl�R�wi rr,r� I 4�V1�: ilia*�Q�i%1 - Ll���►�x"\�� i 1�14i► ��.��yrlJfl�i!`rti��sl� r i�'� Tal►�rt�►���`?`r_�i� ! �rs��ilr�ri •���. s�� +.>.��it s fir �irCR/ w�irtjr•✓- FILTERED WATER OVERFLOW RUNOFF WATER WITH SEDIMENT ROP INLET WITH CATE SEDIMENT SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. SOURCE: VA DSWC PIPE OUTLET CONDITIONS PLATE 318-1 A A UP do PIPE OUTLET TO FIAT AREA WITH NO DEFINED CHANNEL PLAN VIEW La d SECTION A -A FILTER CLOTH KEY IN CIA"; RECOMMENDED FOR ENTIRE PERIMETER A A 3d o(MIN.) da r PIPE OUTLET TO WELL DEFINED CHANNEL PLAN VIEW 1 a d SECTION A -A FILTER CLOTH KEY IN 6"-9'; RECOMMENDED NOTES: FOR ENTIRE PERIMETER 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 118-41 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. SOURCE: VA. DSWC PERSPECTIVE VIEW METAL FENCE VA DSWC STONE CONSTRUCTION ENTRANCE 30Y 1 75' MIN, EXISTING Al 3 PAVEMENT:1 1 5 FILTER CLOTH A MOUNTABLE BERM 6° MIN. (OPTIONAL) SIDE ELEVATION EXIST G GROUND 75' MIN. -T- 10' MIN. of-WAe 12' MIN* EXISTING PAVEMENT MIN. VDOT #1 COURSE POSITIVE DRAINAGE 10 AGGREGATE B TO SEDIMENT TRAPPING DEVICE * MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS PLAN VIEW OPERATION 12' MIN. 043 MIN. MIN. OR ctoTH SECTION A —A REINFORCED CONCRETE TRAIN SPACE SECTION B—B SOURCE: ADAPTED FROM 1983 MARYLAND STANDARDS FOR SOIL EROSION AND SEDIMENT CONTR04 AND VA. DSWC GRAVEL CURB INLET SEDIMENT 3 PLATE FILTER / / r GRAVEL FILTER 1P• RUNOFF WATER WIRE MESH WITH SEDIMENT IY/ FILTERED WATER e 0 e .,. -_r - I� a _ SEDIMENT IIII o Pa: 'T'iIIIrIIT��� o : - CONCRETE GUTTER 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, 1357 OR 5 COARSE AGGREGATE, SOURCE: VA DSWC FENCING AND ARMORING PLAE 338T2 DRIP M['RTIP➢ BOAR[ 'METHODS OF TREE FENCING NICE ON Ora - --Pw^.Wr,,,.. TRIANGULAR BOARD FENCE CORRECT TRUNK ARMORING SOURCE: VA DSWC CONSTRUCTION OF A SILT FENCE (WITHOUT WIRE SUPPORT) PLATE. -2 I. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. fi'MN. IIII rmw - - III 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT TO STAKES AND EXTEND THE EXCAVATED SOIL. q. IT INTO THE TRENCH. IIII. /1 IIII SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) A JINX. * \\\ / POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) SOURCE: ADAPTED FROM INSTALLATION OF STRAW AND FABRIC FILTER BARRIERS FOR SEDIMENT CONTROL,VA. DSWC, SHERWOOD AND WYANT BLOCK & GRAVEL CURB INLET 3 o T $ SEDIMENT FILTER - CURB INLET O 1 � WIRE SCREEN CONCRETE BLOCK GRAVEL FILTER 7 RUNOFF WATER WITH OVERFLOW FILTERED WATER SEDIMEN r - SEDIMENT ) 1 II II WIRE SC/REEN ' �o 2" X 4" WOOD STUD CURB INLET SPECIAL APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE SOURCE: VA DSWC TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS' Rate Planting Dates SlI lbs. a re Sept. 1 - Feb. 15 50150 Mix of Annual Ryegrass (Lolium multi-florum) & 50- 100 Cereal (Winter) Rye (Secale cereale) Feb. 16 - Apr. 30 Annual Ryegrass 60 - 100 (Lolium multi-florum) May 1 - Aug 31 German Millet 50 (Setaria italic') Source: Va. DSWC SILT FENCE CULVERT INLET 3 LO$TE PROTECTION VNDWALL TOE OF FILL -Er IL -CULVERT TOE OF FILL SILT FEND 0 *DISTANCE IS 6' MINIMUM IF FLOW IS L FLOW TOWARD EMBANKMENT *OPTIONAL STONE COMBINATION FLOW - / 2.5' " VDOT #3, #357, #5, 156 OR #57 CLASS I RIPRAP COARSE AGGREGATE TO REPLACE SILT FENCE IN 'HORSESHOE" WHEN HIGH VELOCITY OF FLOW IS EXPECTED SOURCE: ADAPTED from VDOT Standard Sheets and Va. DSWC 1992 3.39 STD & SPEC 3.39 DUST CONTROL DC Definition Reducing surface and air movement of dust during land disturbing, demolition and construction activities. To prevent surface and air movement of dust from exposed soil surfaces and reduce the presence of airborne substances which may present health hazards, traffic safety problems or harm animal or plant life. Conditions Where Practice Applies In areas subject to surface and air movement of dust where on -site and off -site damage is likely to occur if preventive measures are not taken. , ]II - 414 GRAVEL AND WIRE MESH DROP 30 T? INLET SEDIMENT FILTER FILTERED WATER SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY CONCENTRATED FLOWS ARE EXPECTED BUT NOT WHERE PONDING AROUND THE STRUCTURE MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. SOURCE: VA DSWC TEMPORARY DIVERSION DIKE SOURCE: VA. DSWC Compacted Soil TABLE 3.31-A LIMING REQUIREMENTS FOR TEMPORARY SITES Recommended Application vH Test of Agricultural Limestone below 4.2 3 tons per acre 4.2 to 5.2 2 tons per acre 5.2 to 6 1 ton per acre TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES PLATE 3.09-1 SEEDING RATE NORTH' SOUTHb PLANT SPECIES 3/1 Sll 8/15 2/IS 511 911 CHARACTERISTICS Acm 1000 f[z b b to to to to 4/30 8/IS 1111 4130 9/1 11115 OATS T bu. (up to IOD IN,- 2 Ib.. X - - X - - Lse prang varictu, (e.g.. Nohle). (Avem sativ) not less than 50 Ibs.) RYE' 2 bu. (up to 110 lbs., 2.5 lbs. X - X X - X Use for late fall seedlings, winter (Socide cereal.) not Ira. than 50 lbs.) cover. Tolerates cold and low moisture. GERMAN MILLET 50 lbs. appmx. 1 lb. - X - - X - Warreseason annual. Dies at first Setaria iuliw frost. May be Wed to summer an see. ANNUAL RYEGRASS* 60 lbs. l'A lbs. X - X X - X May be added in mixes. Will (Lolium multi-fl'I mow, not of most stands. WEEPING 15 lbs. 5'A oTs. - X - - X - Warm -season pen onid. May LOVEGRASS bunch. Tolerates hot, dry slopes (Erairmatis "Mi.) and acid, infertile soils. May be added to mixes. KOREAN 25 Its. VPMX. I'A X X - X X - Warm season sound legume. LESPEDEZA` lbs. I Tolerates acid soils. May be ganedem sti ulacea added to mixes. * Northern Piedmont and Mountain region. See Plates 3.22-1 and 3.22-2. b Southern Piedmont and Coastal Plain. May be used as a cover crop with spring seeding. d May be used as a cover crop with fall seeding. X May be planted between these dates. . May = be planted between these dates. D 3a Z 8 W `H W W Z H 2' W d Wz W12_w�m (D z W W > [dJ 8 N Z_ CO ~ z Of g H W Q Ix W Z o >zU W VJ0 It a)Z)2aQZQ aW Z fn 2 W Z F H how Oof U Z Q 15~ O gym Q Z U a Q sa o Q of =J J ro O U zx wg H �& � s IN �a o� REVISIONS REV DATE COMMENT DRAMm9YV Know what's below" Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REOEVJAND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: PITY DATE: 1017/2021 CAD I.D.: ODS-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com 577 F;M%N YALTGER Lic. No. 0402056625 1 10/07/2021 _J SHEET TITLE: EROSION DETAILS SHEET NUMBER: C-616 ORG. DATE - 10/7/2021 RISER PIPE BASE CONDITIONS 314T3 III - IIII ICI—III III� ICI —III: III IIIIIIIIIIb N IIII IIII III III. DO J IIIIIIIIIII III. N IIh III: 11= III o —1 li l l j III —II IIIIIIIII: I III. IIIIIIIIIII__ _ JIIIII W IIIIII m IIIIII IIIIII Ililll IIII—III—IIIIII SOURCE: VA DSWC EXCAVATED EARTH SPILLWAY PLAE 3.14T 9 LEVEL PORTIONCREST AND CONTROL SECTION CHANNEL BERM EXIT SECTOR NOTE: NEITHER THE LOCATION NOR ALIGNMENT OF THE CONTROL SECTION HAS TO COINCIDE WITH THE CENTERLINE OF THE EMBANKMENT DAM. PLATE ANTI —SEEP COLLAR 3.14-4 SOURCE: VA DSWC ANTI —VORTEX DEVICE DESIGN 3PLATE 14-10 0 e o� R Qe^ m w x 0 saw ��Sar d cpi� p ��WQW Q� 2 p N W �w N w"oo vW�iWcpiW -< Y i F- U> H O w � F-O J 4 p6 • i ao '� dp N Hml— N T w O N PLAN VIEW N� ?o _ WATER SURFACE �. a X- LENGTH OF EXIT CHANNEL = � :STAGEH `�a ( P) CONTROL SECTION � < - " I b y I T— I�. I ,. lLIN 1� 20' ' .II EXIT SECTOR n - LEVEL OR n r GREATER APPROACH w Q CHANNEL ALONG CENTERLINES 1ou - z Z o d U B 0 JJ, 1V)) CROSS—SECTION AT CONTROL SECTION SOURCE: USDA-SCS a x� wir SOURCE: USDA-SCS TEMPORARY SEDIMENT TRAP 1' VARIABLE ORIGINAL VAAUBLE GROUND ELEV. Lo' 67 CU. YD./ACRE VARUBI. E• ry 67 CU. YD./ACRE (EXONVATED) FLTER CLOTH ORIGINAL GROUND ELEV. -SEE PLATE 3.13-1 COARSE AGGREGATECLASS I RIPRAP CROSS SECTION OF OUTLET GLASS I RIFRPP �+ x FEE 5 D � % DRAINAGE ARR EA (IN AC.) /DMERSION DIKE DIKE f ON COMA �REGATE•,� '-61IM- EXCAVATED /FILTER CLOTH /�\\\�\f AREA fAA COARSE AGGREGATE SHALL BE VDOT /3, /l357 OR /5 OUTLET (PERSPECTIVE VIEW) EMERGENCY SPILLWAY PLATE 3.14-5 0 0 0 �I. a 3 w y m o� wH�LL SOURCE: VA DSWC DETAILS OF CORRUGARED METAL 3PLAT.-13 ANTI —SEEP COLLAR INSTALL COLLAR WITH CORRUGATIONS VERTICAL COLLAR TO BE OF SAME GAGE AS CONTINUOUS THE PIPE WITH WHICH IT IS USED WELD 1/2" X 2" SLOTTED 12" HOLES FOR 3/8" MIN. + 22 a DIAMETER BOLTS. 2 1. tG 1 2' Fp, HAND WELD HDIH srD£s �cDNnNuaus yoLr SECTION B-B CORRUGATED METAL WELD SHEET WELDED 70 B 8" CC CENTER DE HAND ELEVATION OF UNASSEMBLED COLLAR 3. UNASSEMBLED COLLARS SHALL BE MARKED BY PAINTING NOTES FOR COLLARS: OR TAGGING TO IDENTIFY MATCHING PAIRS. 1. ALL MATERIALS TO BE IN ACCORDANCE WITH 4. THE LAP BETWEEN THE TWO HALF SECTIONS AND CONSTRUCTION AND CONSTRUCTION MATERIAL BETWEEN THE PIPE AND CONNECTING BAND SHALL BE SPECIFICATIONS, CAULKED WITH ASPHALT MASTIC AT TIME OF 2. WHEN SPECIFIED ON THE PLANS, COATING OF INSTALLATION. COLLARS SHALL BE IN ACCORDANCE WITH 5. EACH COLLAR SHALL BE FURNISHED WITH TWO 1/2" CONSTRUCTION AND CONSTRUCTION MATERIAL DIAMETER RODS WITH STANDARD TANK LUGS FOR SPECIFICATIONS. CONNECTING COLLARS TO PIPE. DETAIL OF HELICAL PIPE ANTI —SEEP COLLAR SIZE AND SPACING OF SLOTTED OPENINGS SHALL BE THE SAME WELD 1 1/8" X 1 1/8" X 1 1/8' ANGLES TO COLLAR OR AS SHOWN FOR CM COLLAR. BEND A GOANGLE 1 1/8° WIDE AS SHOWN IN DRAWING. USE RODS AND LUGS TO CLAMP 1 1/8" NOTE FOR BANDS AND COLLARS: BANDS SECURELY TO PIPE. MODIFICATIONS OF THE DETAILS SHOWN MAY BE USED PROVIDING EQUAL WATERTIGHTNESS `\1 1J8. IS MAINTAINED AND DETAILED DRAWINGS 12" � ARE SUBMITTED AND APPROVED BY THE MIN. 2 ENGINEER PRIOR TO DELIVERY. BAND OF HELICAL PIPE ISOMETRIC VIEW SHEET METAL COLLAR SHALL BE CUT TO FIT CORRUGATIONS ROD AND LUG OF HELICAL BAND, AND WELDED WITH A CONTINUOUS WELD. NOTE: FOR DETAILS OF FABRICATION DIMENSIONS, MINIMUM GAGES, SLOTTED HOLES, AND NOTES, SEE DETAIL ABOVE. METAL COLLAR TO BE NOTE: TWO OTHER TYPES OF ANTI -SEEP COLLARS ARE: WELDED TO CENTER I. CORRUGATED METAL, SIMILAR TO UPPER, EXCEPT SHOP WELDED TO A OF HELICAL PIPE HAND SHORT (4FT.) SECTION OF THE PIPE AND CONNECTED WITH CONNECTING BANDS TO THE PIPE. PARTIAL ELEVATION 2. CONCRETE, SIX INCHES THICK FORMED AROUND THE PIPE WITH /3 REE ISAI FIELD M4NOAL REBAR SPACED 15" HORIZONTALLY AND VERTICALLY. SOURCE: USDA-SCS MINIMUM STORAGE VOLUME AND 3 14 E1 SEDIMENT STORAGE 67 C.Y./ AC. 'DRY" STORAGE DEWATERING DEVICE SEDIMENT CL£ANDUT POINT (1FET"STORAGE REDUCED TO 34 C.C/ ACRE) SOURCE: VA DSWC EXAMPLE PLAN VIEWS OF BAFFLE 3.14T 6 LOCATIONS IN SEDIMENT BASINS D 2 NO SCALE INFLOW 1 — — — — �4n, RISER L =TOTAL DISTANCE FROM THE POINT OF INFLDW AROUND THE BAFFLE TO THE RISER. SHEETS OF 4' X 8' X 1/2" EXTERIOR 6" PLYWOOD OR EQUIVALENT RISER CREST ELEVATION 4' POSTS MIN. SIZE 4" SQUARE OR 5" ROUND. SET AT LEAST 8' 3' INTO THE GROUND. SOURCE: USDA-SCS PLATE RISER PIPE BASE CONDITIONS 314-14 FOR EMBANKMENTS LESS THAN 10' HIGH CONCRETE BASE FOR EMBANKMENT 10' OR LESS IN HEIGHT STEEL BASE FOR EMBANKMENT 10' OR LESS IN HEIGHT SOURCE: VA DSWC ESS SS SEDIMENT BASIN ELEVATIONS SCHEMATIC PLAE 3.14T2 ST OF WAT DESIGN HIGH WATER (25-YR. STORM AIERIENCY LWAY LLWAY JOE MIN.IF 0.5' MIN. HO' MIN, 67 C.Y./ AC. —f - RISER CREST 'DRY' STORAGE i - DEWATERING DEVICE 67 C.Y./ AC. "WET' STORAGE SEDIMENT CLEANOUT POINT (-NET• STORAGE REDUCED TO 34 C.Y./ ACRE) DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY DESIGN HIGH WATER (25-YR. STORM ELEV.) 021 0.5 MIN 67 C.Y./ AC. DRY STORAG 67 C.Y./ AC. - "WET" STORAGE SEDIMENT OLEANDER POINT DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) SOURCE: VA DSWC RISER CREST DEWATERING DEVICE PLATE PRINCIPAL SPILLWAY DESIGN 3.14-7 CO H = HEAD ON PIPE THROUGH EMBANKMENT h = HEAD OVER RISER CREST L = LENGTH OF PIPE THROUGH EMBANKMENT DID = DIAMETER OF PIPE THROUGH EMBANKMENT Dr = DIAMETER OF RISER SOURCE: VA DI PLATE RECOMMENDED DEWATERING 314-15 SYSTEM FOR SEDIMENT BASINS SOURCE: VA DSWC PROVIDE ADEQUATE STRAPPING POLYETHYLENE CAP DEPTH VARIES _ AS REQUIRED PERFORATED POLYETHYLENEI FOR "DRY" DRAINAGE TUBING, DIAMETER STORAGE VARIES (SEE CALCULATIONS IN APPENDIX 3.14-A) WET "FERNCO-STYLE" COUPLING STORAGE DEWATERING ORIFICE, SCHEDULE 40 STEEL STUB 1-FOOT MINIMUM, DIAMETER VARIES CORRUGATED MEFAL RISER (SEE CALCULATIONS IN 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 W294 E 3a CD Z 8 W a W W Z FW zmQ W UWua ZLU WUOfW 3agN ZU) _ d§ W Q 2 W Z o >ZUWU)IS �o (n 7 Q Q Z Q <W 11J Z (n 2 W Z H R-In how 0zof< 20 0JOfZU)D_Z Q d'ZU)EL.Q sa EL Q of = J J ro O U zx wm U � s �a o� REVISIONS REV DATE I COMMENT DRAvIx BYV Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG I PM CHECKED BY: RTY DATE: 101712021 CAD I.D.: ODS-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _. WH e.. F;M%N YAUZ•iER Lic. No. 0402056625 1 10/07/2021 -J SHEET TITLE: EROSION DETAILS SHEET NUMBER: C-617 ORG. DATE - 10/7/2021 SEDIMENT BASIN 1 NOT TO SCALE GRADE TOP OF DAM =458.00` EXISTING GRADE r1NV. _ 88' _ 24„ CMP PIPE @ 2.15% 9 11 .P=G A PERMANENT STRUCTURE G-20 PROPOSED STEPPED RETAINING WALLS (SHOWN FOR SCHEMATIC PURPOSES ONLY) 24.5' - 2q^ RCP PI EW-2 ENDWALL - INV. OUT=445.00 _PERMANENT RIP -RAP OUTFALL PROTECTION SEDIMENT ']CRAP DESIGN Trap Drainage Storage Volume Dimensions Elevations Embankment Outlet Top Spillway ID Area (ac) Total "Wet" "Dry" "Wet"* L X W X D (ft) "Dry"" L x W x D (ft) Storage Trap Bottom (ft) Clean Out*** (ft) Elev. (ft) Height H (ft) Height Ho (ft) Width W (ft) Dimensions L x W (ft) Req. (cy) Prov. (cy) Req. (cy) Prov. (cy) Req. (cy) Prov. (cy) "Wet" (ft) "Dry" (ft) ST-1 2.00 268 325 134 135 134 190 69 x 31 x 2 77 x 39 x 2 477 479 475 476 480 3.0 2.0 2.5 12' x 14.5' ST-2 2.27 306 406 153 171 153 235 73 x 37 x 2 81 x 45 x 2 462 464 460 461 465 3.0 2.0 2.5 14' x 14.5' ST-3A 1.70 228 281 114 116 114 165 61 x 30 x 2 69 x 38 x 2 473 475 471 472 476 3.0 2.0 2.5 1 V x 14.5' ST-313 1.65 222 294 111 122 111 172 62 x 31 x 2 70 x 39 x 2 474 476 472 473 477 3.0 2.0 2.5 1 O' x 14.5' ST-4 1.11 150 247 75 101 75 146 57 x 28 x 2 65 x 36 x 2 467 469 465 466 470 3.0 2.0 2.5 Tx 14.5' NOTES * WET DIMENSIONS: LENGTH AND WIDTH ARE AT BASE OF STONE OUTLET. DEPTH IS MEASURED FROM BASE OF STONE OUTLET DOWN TO BOTTOM OF TRAP. ** DRY DIMENSIONS: LENGTH AND WIDTH ARE AT CREST OF STONE OUTLET. DEPTH IS MEASURED FROM BASE OF STONE OUTLET UP TO CREST OF STONE OUTLET THE CLEAN OUT ELEVATION SHALL BE MARKED USING STAKE OR SPRAY PAINT ON THE RISER SEDIMENT BASIN DESIGN DATA SHEET WITHOUT AN EMERGENCY SPILLWAY PROJECT : RST RESIDENCES LOCATION : SE CORNER OF SITE BASIN ID : 1 DRAINAGE AREA : 6.30 ACRES BASIN VOLUME DESIGN WET STORAGE 1. MINIMUM REQUIRED VOLUME = 67 CU. YES. x TOTAL DRAINAGE AREA (ACRES) 67 CY x 6.30 ACRES = 462.30 CY 2. AVAILABLE BASIN VOLUME = 462.30 CY AT ELEVATION 452.30 (FROM STORAGE - ELEVATION CURVE) 3. EXCAVATE 462.30 CY TO OBTAIN REQUIRED VOLUME * ELEVATION CORRESPONDING TO REQUIRED VOLUME INVERT OF THE DEWATERING ORIFICE. 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED 33 CY x 6.30 ACRES = 211.05 CY 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 450.40 (FROM STORAGE - ELEVATION CURVE) 6. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 1.9 FT (MIN. = 1.0 FT) DRY STORAGE 7. MINIMUM REQUIRED VOLUME = 67 CY x TOTAL DRAINAGE AREA (ACRES) 67 CY x 6.30 ACRES = 462.30 CY 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER = 924.60 CY AT ELEVATION 455.00 (FROM STORAGE - ELEVATION CURVE) 9. DIAMETER OF DEWATERING ORIFICE = 4 IN. 10. DIAMETER OF FLEXIBLE TUBING = 6 IN. (DIAMETER OF DEWATERING ORIFICE PLUS 2 INCHES). PRELIMINARY DESIGN ELEVATIONS 11. CREST OF RISER = 455.00 UPSTREAM TOE OF DAM = 448.00 BASIN SHAPE 12. LENGTH OF FLOW (L) EFFECTIVE WIDTH (We) TOP OF DAM = 458.00 DESIGN HIGH WATER = 456.00 60 FT 3953 SF / 60 FT IF > 2, BAFFLES ARE NOT REQUIRED IF < 2, BAFFLES ARE REQUIRED [ X ] RUNOFF 13. Q 2 = 18.98 CFS (FROM CHAPTER 5) (6.30 ACRES x 0.60 'C' X 5.02 IN/HR AT 5 MIN Tc) 14. Q 25 = 28.27 CFS (FROM CHAPTER 5) (6.30 ACRES x 0.60 'C' X 7.48 IN/HR AT 5 MIN Tc) PRINCIPAL SPILLWAY DESIGN 15. WITHOUT EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp = Q25 = 28.27 CFS (RISER AND BARREL) 16. WITHOUT EMERGENCY SPILLWAY, ASSUMED AVAILABLE HEAD (h) = 1.0 FT (USING Q 25) h = DESIGN HIGH WATER ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER (Dr) = 36 IN. ... ACTUAL HEAD (h) 1.0 FT (FROM PLATE 3.14-8) NOTE: AVOID ORIFICE FLOW CONDITIONS RISER CALCULATED USING THE TOTAL FLOW - 28.27 CFS 18. BARREL LENGTH (1) = 88.00 FT HEAD (H) ON BARREL THROUGH EMBANKMENT = 10.0 FT (FROM PLATE 3.14-7) 19. BARREL DIAMETER = 24 IN. - CORRUGATED METAL PIPE (CMP) (FROM PLATE 3.14-B [CONCRETE PIPE] OR PLATE 3.14-A [CORRUGATED PIPE]) 20. TRASH RACK ANTI -VORTEX DEVICE DIAMETER = 54 IN. HEIGHT = 17 IN. (FROM TABLE 3.14-D) EMERGENCY SPILLWAY DESIGN (N/A) 21. REQUIRED SPILLWAY CAPACITY Qe = Q25 - Qp = N/A 22. BOTTOM WIDTH (b) = N/A EXIT CHANNEL SLOPE (S) = N/A EXIT CHANNEL MINIMUM LENGTH (x) = N/A (FROM TABLE 3.14-C) ANTI -SEEP COLLAR DESIGN (IN USE) 23. DEPTH OF WATER AT PRINCIPAL SPILLWAY CREST (Y) = 7.00 FT SLOPE OF UPSTREAM FACE OF EMBANKMENT (Z) = 2.00 FT SLOPE OF PRINCIPAL SPILLWAY BARREL (SID) = 0.0216 FT/FT LENGTH OF BARREL IN SATURATED ZONED (Ls) = 46 FT 24. NUMBER OF COLLARS REQUIRED = 1 DIMENSIONS = 5.7' x 5.7' (PER PLATE 3.14-12) FINAL DESIGN ELEVATIONS 25. TOP OF DAM = 458.00 (+0.00) DESIGN HIGH WATER = 456.00 (-2.00) EMERGENCY SPILLWAY CREST = N/A PRINCIPAL SPILLWAY CREST / DRY STORAGE ELEVATION = 455.00 (-3.00) DEWATERING ORIFICE INVERT / WET STORAGE ELEVATION = 452.30 (-5.70) CLEANOUT ELEVATION = 450.40 ELEVATION OF UPSTREAM TOE OF DAM = 448.00 (OR EXCAVATED BOTTOM OF "WET STORAGE AREA" IF EXCAVATION WAS PERFORMED) ELEV. AREA (SF) ACC. VOL. (CF) ACC. VOL. (CY) 448.00 1,890 0 0 449.00 2,330 2,110 78 450.00 2,800 4,675 173 451.00 3,290 7,720 286 452.00 3,800 11,265 417 453.00 4,350 15,340 568 454.00 4,915 19,973 740 455.00 5,505 25,183 933 456.00 6,123 30,997 1,148 SEDIMENT BASIN SCHEMATIC 3 4Tz ELEVATIONS TOP OF DAM EL. 458.00 DESIGN HIGH WATER 5-YR. STORM ELEV. EL 456.00) 20'1MIN W 3.01.MIN. 67 C.Y./ AC. ........ bRY° STORAGE EL 455.OD ........ . 67 C.Y./ AC. "WET' STORAGE EL. 452.30 SEDIMENT CLEANOUT POINT EL. 450.40 SOURCE: VA DSWC 1.0' MIN. DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) RISER CREST EL. 455.00 DEWATERING DEVICE EL. 452.30 J 0 m z z E w w w Tn z E. of w WH(D>z W (DWwU)jwzz r (9 1= WO Tn O' Fw¢x Luz >zC)LUU)0 aiD2<<z< zc42wzFE Ix 0zof< 0 z J Oa, 0Z)wz Z (L Q > 3- < of U w H ' REVISIONS J- REV DATE COMMENT io Know whars below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: ODS-0 PROJECT VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com raALTH [ice F;M%N YAUZ•iER Lic. No. 0402056625 1 10/07/2021 SHEET TITLE: SEDIMENT TRAP AND BASIN DETAILS SHEET NUMBER: C-618 ORG. DATE - 10/7/2021 OTHER REFERENCED PLANS SWPPP requirements may be fulfilled by incorporating, by reference, other plans. All plans incorporated by reference become enforceable under the VSMP Permit Regulations and General Permit VAR10 for Discharges of Stormwater from Construction Activities. If a plan incorporated by reference does not contain all of the required elements of the PPP, the operator must develop the missing elements and include them in the SWPPP. Independent Plans Incorporated by Reference Date Approved Stormwater Management Plans (Regional or Master) THIS APP. Spill Prevention, Control, and Countermeasure Plans N/A Off -Site Stockpile N/A Off -Site Borrow Area N/A POTENTIAL POLLUTANT SOURCES The following sources of potential pollutants must be addressed in the Pollution Prevention Plan. Various controls and/or measures designed to prevent and/or minimize pollutants in stormwater discharges from the project site must be applied to the sources found on the site. Additional information concerning the following controls and/or measures may be found in the SWPPP. LEAKS. SPILLS. AND OTHER RELEASES ✓ The operators) shall ensure procedures are in place to prevent and respond to all leaks, spills and other releases of pollutants. ✓ The operator(s) shall ensure all leaks, spills and other releases of pollutant are contained and cleaned immediately upon discovery. Any contaminated materials are to be disposed in accordance with federal, state, and/or local requirements. ✓ The operator(s) shall ensure spill containment kits containing appropriate materials (e.g., absorbent material and pads, brooms, gloves, sand, etc.) are available at appropriate locations, including, but not limited to: designated areas for vehicle and equipment maintenance; vehicle and equipment fueling; storage and disposal of construction materials, products, and waste; and storage and disposal of hazardous and toxic materials; and sanitary waste facilities. ✓ The locations of the spill containment kits are identified as described below: Date Shown on Plan Sheet #S Location Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Date Shown on Plan Sheet #s Location Operator(s) Initials ✓ The operators) shall notify the Department of Environmental Quality of leaks, spills, and other releases that discharge to or have the potential to discharge to surface waters immediately upon discovery of the discharge but in no case later than 24 after the discovery. EQUIPMENT / VEHICLE WASHING ✓ Washing must be conducted in a dedicated area that is located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. ✓ All wash water used in vehicle wheel washing must be directed to a sediment basin/trap. ✓ All vehicle washing activities other than wheel washing must have secondary containment. ✓ Each facility must have appropriate signage to inform users where the dedicated areals) are located. Location of Shown on Source Activity DedfcatedAreaii PlanWater Location Sheet s Wheel Wash West side C-602 PROP FIRELINE OR CORP STOP Other Wash West side C-602 PROP FIRELINE OR CORP STOP Areas REVISIONS TO LOCATIONS Location of Shown on Water Source Operator's Activity Dedicated Area(s) plan Location Initials Sheet # s VEHICLE FUELING AND MAINTENANCE ✓ Conduct regular maintenance in a dedicated area that is located to maximize the distance from storm drain inlets ditches waterbodies or wetlands but no less than 50 feet from those features. ✓ If fueling is conducted at a dedicated area, the location must be located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. ✓ The dedicated areas must be designed to eliminate the discharge of spilled and leaked fuels and chemicals from vehicle fueling and maintenance activities by providing secondary containment (spill berms, decks, spill containment pallets, providing cover where appropriate, and having spill kits readily available). ✓ Each facility must have appropriate signage to inform users where the dedicated areas) are located. Date Shown on Plan Sheet s Location of Dedicated Areas) Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Date Shown on Plan Sheet s Location of Dedicated Area(s) Operator's erat Op erats ✓ If mobile fueling will be used, the fueling must be done in an area that located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feetfrom those features. ✓ Spill kits must be readily available at all mobile fueling locations. ✓ On -site storage tanks must have a means of secondary containment (spill berms, decks, spill containment pallets, etc.) and must be covered where appropriate. ✓ All vehicles on site must be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage. C•]�K•] �6.19;illot Ile] ►1:1 CZ•] Billettfifit ii:1N FAli0U7TITETRI I :4 ✓ Storage of construction products, materials, and waste is to be conducted in dedicated areas. ✓ The dedicated area must be located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. Separations of less than 50 feet may be approved by the Environmental Inspector. ✓ The dedicated areas must be designed to minimize the discharge of pollutants from storage, handling, and disposal of construction products, materials and wastes including (i) building products such as asphalt sealants, copper flashing, roofing materials, adhesives, concrete admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape materials; and (iii) construction and domestic wastes such as packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, Styrofoam, concrete and other trash or building products.. ✓ Each facility must have appropriate signage to inform users where the dedicated areals) are located. Shown on Location(s) of Dedicated Areas) for storage of construction Date Plan Sheet products and materials s Approved C-602 West side of the site near construction entrance. Plan REVISIONS TO LOCATIONS Date Shown on Plan Sheet Location(s) of Dedicated Area(s) for storage Operator(s) of construction products and materials Initials S Shown on Location(s) of Dedicated Area(s) for waste from Date Plan Sheet construction products and materials #s Approved C3.1 WEST CORNER OF SITE Plan REVISIONS TO LOCATIONS Date Shown on Plan Sheet Locations) of Dedicated Areas) for waste Operator(s) #s from construction products and materials Initials ✓ Follow all federal, state, and local requirements that apply to the use, handling and disposal of pesticides, herbicides, and fertilizers. ✓ Keep chemicals on -site in small quantities and in closed, well marked containers. ✓ Clean up solid waste, including building materials, garbage, and debris on a daily basis and deposit into covered dumpsters that are periodically emptied. ✓ Schedule waste collection to prevent exceeding the capacity of onsite containers. Additional containers may be necessary depending on the phase of construction (e.g., demolition, etc.) ✓ Dispose of all solid waste at an authorized disposal site. ✓ Ensure that containers have lids or are otherwise protected from exposure to precipitation. DISCHARGES FROM OTHER POTENTIAL POLLUTANT SOURCES ✓ Discharges from other pollutant sources (e.g., water line flushing, storm sewer flushing, above ground storage tanks, etc.) not mentioned elsewhere must be addressed. ✓ Above ground oil storage tanks with a storage capacity exceeding 1,320 gallons and have a reasonable expectation of a discharge into or upon Waters of the United States are required to have a Spill Prevention Control and Countermeasure (SPCC) Plan. ✓ The discharge of contaminated flush water and material removed during flushing operations must be collected and disposed of in accordance with appropriate federal, state, and local requirements. DISCHARGES FROM CONCRETE RELATED WASH ACTIVITIES Concrete trucks are not allowed to wash out or surplus discharge concrete or drum wash water on site except in a dedicated steals) that is located to prevent discharge to storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. Each facilitymust have a stabilized access to prevent mud tracking into the street. P 9 ✓ Each facility must have appropriate signage to inform users where the dedicated areas) are located. Shown on Date Plan Location of Dedicated Area(s) Sheet # s Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Shown on Operators Date Plan Location of DedicatedArsa(s) Initials Sheet # s ✓ Facilities must be cleaned, or new facilities constructed, once the washout area is two-thirds (2/3) full. t BELOW GRADE CONCRETE WASHOUT AREA 0o CD 0 0 CD O O O 10' MIN. 10' MIN. A 0 O O 0 CD CD CD 18, MIN. te' MIN. T MIN. I I- 10' MIN. SECTION A ABOVE GRADE CONCRETE WASHOUT AREA STAPLE DETAIL a° V dia. steel Are 2° THIN bale or metal stakes (2 aw bale) DISCHARGES OF SOAPS, DETERGENTS, SOLVENTS, AND WASH WATER FROM CONSTRUCTION ACTIVITIES SUCH AS CLEANUP OF STUCCO, PAINT, FORM RELEASE OILS, AND CURING COMPOUNDS ✓ Washing activities associated with construction activities other than vehicle and equipment washing, such as clean up of stucco, paint, form release oils, and curing compounds are to be conducted in a dedicated area. ✓ The dedicated area must be located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. Separations of less than 50 feet may be approved by the Environmental Inspector. ✓ The dedicated areas must be designed to prevent the discharge of soaps, detergents, solvents, and wash water. Date Shown on an Sheet # s Locations) of Dedicated Areas) Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Date Shown on Plan Sheet # s Locations) of Dedicated Area(s) Operators) Initials ✓ The dedicated area must be covered (e.g., plastic sheeting, temporary roof, etc.) to prevent contact with stormwater. ✓ The contaminated wastewater from the dedicated area must be collected for disposal by a waste hauler or discharged to the sanitary sewer. ✓ In situations where these pollutants are or could be generated at locations other than at the designated area (e.g., concrete pours, building washing, etc.), cover (e.g., plastic sheeting, temporary roof, etc.) must be provided to prevent contact with stormwater and the contaminated wastewater from the activity must be collected for disposal by a waste hauler or discharged to the sanitary sewer. DISCHARGES OF HAZARDOUS, TOXI AND SANITARY WASTE ✓ Storage and disposal of hazardous, toxic and sanitary wastes are to be conducted in dedicated areas. ✓ The dedicated areas must be located to maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. Separations of less than 50 feet may be approved by the Environmental Inspector. ✓ The dedicated areas must be designed to prevent the discharge of hazardous, toxic and sanitary waste by avoiding contact with precipitation ✓ Each facility must have appropriate signage to inform users where the dedicated area(s) are located. Shown on Location(s) of Dedicated Area(s) for storage and disposal of Date Plan hazardous and toxic wastes Sheet # s Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Shown on Location(s) of Dedicated Areas) for storage Operator(s) Date Plan and disposal of hazardous and toxic wastes Initials Sheet # s Date Shown on Plan Sheet # s Location(s) of Dedicated Area(s) for portable toilets Approved Plan C-602 West side of the site near construction entrance. REVISIONS TO LOCATIONS Date Shown on Plan Sheet # s Location(s) of Dedicated Area(s) for portable toilets Operators) Initials ✓ Consult with local waste management authorities or private firms about the requirements for disposing of hazardous materials and/or soils that may be contaminated with hazardous materials. ✓ Never remove the original product label from the container. Follow the manufacturers recommended method of disposal. ✓ Schedule periodic pumping of portable toilets and dispose of waste ✓ Dispose of all solid waste at an authorized disposal site. SECTION B SWPPP MODIFICATIONS AND REVISIONS The operators) shall ensure the SWPPP is modified and/or revised to reflect: ✓ Changes in qualified personnel; delegated authorities or other personnel required as a condition of the General Construction Permit; ✓ Changes in site conditions; --m-4 If 1' ✓ Changes in the design, construction, operation, or maintenance of the construction min. site that affect the potential for discharges of pollutants that are not addressed in the normal implementation of the plan; and 3'MIN.-IC✓ Ineffective control measures identified during inspections or investigations =1=1 conducted by the operator's qualified personnel or local, state or federal officials. —I I I-- Modifications/revisions to the SWPPP shall include additional or modified control 7 SECTION C measures to address the identified deficiencies. CONCRETE WASHOUT AREA NOTES ✓ The facility must be lined with 10 mil plastic lining that is free from holes, tears, or other defects that might compromise the material's impermeability. ✓ The lining must be anchored with staples (2' spacing) or sandbags. ✓ Side slopes must be 1:1 (horizontal:vertical) or flatter. ✓ Stone access must be provided between the street and the concrete washout area. ✓ A "Concrete Washout' sign must be installed within 30 feet of the washout facility. The sign must be no smaller than 2' tall by 4' wide. If the necessary modifications/revisions require approval by the Administrator or DEQ, the modifications/revisions must be implemented no later than seven (7) calendar days following approval. If the necessary modifications/revisions do not require approval by the Administrator, the modifications/revisions must be implemented prior to the next anticipated storm event or as soon as practicable. SWPPP UPDATES The operators) shall update the SWPPP to include: ✓ A record of dates when 1) major grading activities occur, 2) construction activities temporarily or permanently cease on a portion of the site, and 3) stabilization measures are initiated; ✓ Documentation of modifications and revisions to the SWPPP; Areas that have reached final stabilization where no further SWPPP or inspection requirements apply; ✓ All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property; and ✓ The date, volume, and corrective/preventative actions implemented for any prohibited discharge. The operator(s) shall update the SWPPP no later than seven (7) days following any of the situations identified above. OPERATOR INSPECTIONS The operator(s) identified below shall provide for inspections of the permitted land - disturbing activities by the qualified personnel identified below. The inspections will be conducted (select one the following options): ❑ at least once every four (4) business days; or ❑ at least once every five (5) business days and no later than 24 hours following any measurable storm event. Where areas are in a stabilized condition or runoff is unlikely due to winter conditions, the inspection frequency may be reduced to once every 30 days while these conditions exist. Otherwise, the operator(s) shall resume the regular inspection frequency identified above. The operators) shall provide for inspections of the permitted land -disturbing activity to ensure implementation and continued maintenance of all requirements of the Stormwater Pollution Prevention Plan (Erosion and Sediment Control Plan, Stormwater Management Plan, Pollution Prevention Plan, TMDL requirements, etc.). Records of the required inspections must be maintained and included in the SWPPP binder. The qualified personnel are encouraged to use the Operator Inspection form provided in the SWPPP binder to document the required inspections. If inspections are conducted once every five (5) business days and no later than 24 hours following any measureable storm event, the location of the rain gauge used to determine the amount of rain must be included in the SWPPP and documented in the inspection report. ACKNOWLEDGEMENTS I certify under penalty of law that the qualified personnel identified below a. has been designated by the Operator to conduct inspections of the permitted site; b. is knowledgeable in the principles and practices of erosion and sediment control and stormwater management; C. possesses the skills to assess conditions at the permitted site for the Operator(s) that could impact stormwater quality and quantity; d. will assess the effectiveness of any erosion and sediment control measures or stormwater management facilities selected to control the stormwater discharges from the permitted site; and e. will conduct inspections in accordance with the frequency noted above in the OPERATOR INSPECTIONS section of this sheet. QUALIFIED PERSONNEL Name (print) Phone Additional information is located in Tab 6 of the SWPPP Binder. As the Operators) or Delegated Authority, I/we understand that prior to initiating land disturbance, the potential pollutant sources, appropriate control measures, and all responsible parties (operator, qualified inspection personnel, contractors, etc.) required as a condition of the General Construction Permit (GCP) and the Stormwater Pollution Prevention Plan (SWPPP) must be identified. I also understand this information must be updated as necessary throughout all phases of construction until the GCP is terminated. Furthermore, Itwe certify under penalty of law that I/we have read and understand all requirements of the SWPPP (erosion and sediment control plan, stormwater management plan, pollution prevention plan, TMDL provisions, administrative requirements, etc.) and GCP and that the information herein is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine or imprisonment for knowing violations. Ilwe understand that Ilwe are ultimately responsible for compliance with all conditions and requirements of the SWPPP and GCP and for ensuring all contractors and subcontractors on the permitted site are aware of the conditions and requirements of the SWPPP and GCP. Ilwe shall comply with all conditions and requirements of the SWPPP and shall at all times properly operate and maintain all measures and control (and related appurtenances) which are installed or used to achieve compliance with the conditions of the GCP. Proper opration and maintenance also includes adequate funding and adequate staffing. I/we shall take all reasonable steps to minimize or prevent any discharge in violation of the SWPPP and/or GCP. Ilwe understand that if it determined by the Department of Environmental Quality (DEQ) in consultation with the State Water Control Board at any time that stormwater discharges are causing, have reasonable potential to cause, or contribute to and excursion above any applicable water quality standard, the DEQ may, in consultation with the Administrator, take appropriate enforcement action and require: a. Modification of control measures to adequately address water quality concerns; b. Submission of valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or C. Cessation of discharges of pollutants from construction activity and submit an individual permit application according to 4VAC25-870-410. OPERATOR(S) / DELEGATED AUTHORITY Name(print) Signature Date Additional contact information can be found in the SWPPP Binder. Z C) Z W W J 0 m Z z E W W W rn z W C7 ZjZU)2 Z WFOwj UJ OZWwU)jw F Zr(91=onto W¢x WZ U W � cn > Z O ai��IQZQ Zra2wzF� 0ZOf< 0 Q Go J Off] U) W Z Z [L Q > a < Ir U W H REVISIONS REV DATE COMMENT • I Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 10/7/2021 CAD I.D.: SDP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohierEng.com TH R4%N YAUGER Lic. No. 0402056625 10/07/2021 SHEET TITLE: POLLUTION PREVENTION PLAN SHEET NUMBER: C-619 ORG. DATE - 10/7/2021 J 0 m r, Z EE W W W rn Z W f7 ZjZ(AU Z W H W 0 Z W W j W t=oEZm cI.g9Q 2 W J> Z 0 W 0 ai022aQZQ 00<CL Fof �zW< 0 Rof J W 0 U) W Z Z d Q J aQ of J F U W H REVISIONS REV I DATE I COMMENT \ _----------------------------- - -------------- i i i /```� ``r�0. IA' VW f i) ' ' b. i ' `� ( '� `, \ `♦` i ' i `,I `� — \ `SOON \\ �` `` \ `` `` `� �' i � /,QQ / '� � ______ ' i � ♦ __-' i I 1`, ' ` � � ♦\` ♦ dp l \\; \\\'\ `mi- \ ---_---_- - _ , CN=72 \ \ I I I \ \ Know what's below. \ ' •400 Call before you dig. - ' ✓�' : :\'_�504 -'' I I \ \ `\ \ \ '♦ \ \ ALWAYS CALL 811 -- It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: HDP - 0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA V74401, LEGEND B O H L E R // v L)� S/ENFIAL II �I OI STORMWATER POINT OF INTEREST 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 I Phone: (804)893-8200 \ EXISTING IMPERVIOUS AREA \ 4.05 AC (21.8%) VA@BohlerEng.com \ � TH OFL t I � I'I EXISTING PERVIOUS AREA �►j 14.50 AC (78.2%) 0 V N YA R 7' -e Lic. No. 0402056625 y 10/07/2021 SHEET TITLE: PRE DEVELOPMENT DRAINAGE AREA MAP SHEET NUMBER C-901 60 30 15 0 60 1- so' ORG. DATE - 10/7/2021 \ -_ ___________ ------------ ______----_______ _--------------- \ _____________ �` / 0 r LEGEND PROPOSED IMPERVIOUS AREA 12.51 AC (67.4%) STORMWATER POINT OF INTEREST PROPOSED PERVIOUS AREA 6.04 AC (32.6%) PROPOSED UNDERGROUND STORMWATER VAULT CDs HYDRODYNAMIC SEPARATOR 60 30 15 0 60 1 "= 60' J 0 m r, Z EE W W W 10 Z W f7 ZjZ(AU Z W H W 0 Z W W j W t=oEZm cI.g9Q 2 W J> Z 0 W 0 ai022aQZQ 00<CL Fof 0zW< of 0 Q J W0 U) W Z Z d Q J aQ of J F U W H REVISIONS REV I DATE I COMMENT 0 Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: -0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohletrEng.com TH RYAN YAU>;ER Lic. No. 0402056625 10/07/2021 SHEET TITLE: POST DEVELOPMENT DRAINAGE AREA MAP SHEET NUMBER C-902 ORG. DATE - 10/7/2021 STORMWATER NARRATIVE EXISTING INLET ANALYSIS 2 YEAR INLET COMPUTATIONS Inlet DA C I Q Q b Qt S Sx n T W Sw On Grade Inlets Only Y Sag Inlets 9 Y Remarks No. Type Length (ft) Drain Area (acres) Runoff Coeff- icient Inten -sily (in/hr) Incr. Flow (d5) Carry -over Flow (cft') Accum. Flow (cn) Gutter Slope 0 (7a) Pvmt Cross Sloe P O (70) Spread On Grade lft) Gutter Width Ift) W / T Gutter Cross Sloe P 0 (7a) Sw / Sx Eo (App. 9C-8 ) a (in) S'w = a / 12W ( ) o vo) Se=Sx + S'w Eo ( ) a (7a) Lt,Comp. Length 9C-17 ( ) (ft) L,Spec ified Length 9 (ft) L / Lt E Qi Qb Down Stream Str. Qi d h (ft) d / h Ts ev10/07 Eff. 9C-18 ( ) InYx Flow (cft;) Byp. Flow (ems) Intx Flow (cft') Depth (ft) Spread In Sa 9 (ft) 1-10 Ex Curb DI-3B 8.00 0.95 0.48 5.02 2.29 0.00 2.29 1.50 2.00 0.02 7.56 2.00 0.26 8.33 4.17 0.72 3.52 14.66 12.51 10.43 8.00 0.77 0.93 2.12 0.17 0.00 0.00 0.00 0.00 0.00 0.00 On Grade 1-10 prop Curb DI-38 8.00 0.97 0.52 5.02 2.53 0.00 2.53 1.50 2.00 0.02 7.96 2.00 0.25 8.33 4.17 0.69 3.52 14.66 12.13 11.08 8.00 0.72 0.90 2.28 0.25 0.00 0.00 0.00 0.00 0.00 0.00 On Grade north inlet ex Curb DI 8.00 0.33 0.78 5.02 1.29 0.00 1.29 1.50 2.00 0.02 5.45 2.00 0.37 8.33 4.17 0.86 3.52 14.66 14.61 7.47 8.00 1.07 1.00 1.29 0.00 0.00 0.00 0.00 0.00 0.00 0.00 On Grade north inlet prop Curb DI-3B 8.00 0.33 0.82 5.02 1.36 0.00 1.36 1.50 2.00 0.02 5.62 2.00 0.36 8.33 4.17 0.85 3.52 14.66 14.43 7.68 8.00 1.04 1.00 1.36 0.00 0.00 0.00 0.00 0.00 0.00 0.00 On Grade VRRM REDEVELOPMENT CALCULATIONS DFq Vigi a Runoff Reduction Method Re -Development Compliance Spreadsheet -Version 3.0 RMPcemansnxtpmnomua, 2011stdeaspem Site Summary Proiee lme: lest Dexbpmem mb:ua� Total Raimall (in) IN Tmel..ned Rvea Uss Site Land Clever Summary A sans RSNIS CenRs osons Toms %of Total fomN(wn lxma) D.DD SBq OA0 0.W 6.8a 37 Men Turf ewes qea I 1 0.00 )b6 040 am Tb6 al Ira mau[fnutt1xrea) a out,out,Aa5 DAD DAD aAS x2 aess MD BSolb CSolI, L__ TpWe %wT ': Pc-surcwnlearaO aaD Dm 000 om am D Man Turf Dan am azed 1 1 6AM1 due am 8DM1 M Ira MwaCwer xrm o.DD w ctu outo am M51 6T 1355 Mo Site Tv and land Cover Nutrient Wads Final PxeoeselopnwM �- Paco- Aalu[tea Pt� IPe[t#eaeeebpmem Intensional DexbPmmt ReRwbmlam aaea,lmpervbxl taen imi:xaaa[1 site Rr a.)1 am 0.95 0.50 Treameevoiumehs 6)$M la,a. ss,na vpn M Wed ob/rr) xAR6 lvs3 ]833 1153 Tend TP la.a Redl[[Ibn RewiM (IlNvrl v.v x91 1a96 Final Pasd a lopmmt Wad PFe- IPM.RmevNwmwlaReelmPvrdmu) sd%eedRsdl riff Wed lbMl I 2B.62 svlx Site Compliance Summary rmsemnm% Red.men Rewires a. za% Meauoevalopmemloed Total Ramat Volume ReauRlon lR sl a Total To Wad Reduction Achieve!(IbiW) 12.93 Total TR used Reduction Achieved llbAr) 0.00 Remaining Pmt oevelopment V used 16.93 Ilb/vrl MmaMiry TIP Wul Reduction IIbfir) In Required Drainage Area A Summary Land Cover Summary l Po[tLecareunt ,RlP .w[#Ireeale[upmtlarppxxl. P ba rn r I tranmh,l I b/ MI Lla lbl Lla ASNb BSalb Clalb Dole Tatel %Mased rwest/awn oss-I I too I oto IOADI cuo 010 0 Mng Turfleuesl I aW I x.Tb IO.WI 0.W Ln W Ironed-Cwerlxre) acto 11.% 1 000 1 OAe 1136 I so BMP www. Manap6 Tud Imparvlou[ internal TPlotllmm u11V[[Iaa TPlp[a TPRemOWa nRemalnlnR anvm[bNm T[Ybnent P'[pM Collins.relCo[9'Qoak Valumela[) attempt WP .11WI Ilbhrl (abut Labe Empbgtl drnq Alas edema 14.8. Manutarturea Teatment Device- L66 3.61 M,atea.[6 0.ab no In 17.1111 1M.MfD-FlhMn3 Xvaroayna mir 10.6. Manufactured Treatment Device- filtering 09 L)S e1,171 17E AM 8.61 ]191 Total lmpenrous rover Treated (acres) t136 TMal Turf Area Teaced(aoesl LM TTaI TP Wad Reduction ATlwea In D.A. 1293 Plow) TOPoITa Waa Reducion MMessi (Ibhr) 0.W NUTRIENT CREDIT AVAILABILITY LETTER Rivanna River Nutrient Bank Certificate No. James-039 October 6, 2021 Bottler Engineering Attention Pilot Moore, Senior Design Engineer Project: RST Development Location: Albemarle County at the intersection of Seminole Trail and Ashwood Boulevard HUC8: 02080204 Credits required: 4.3 Price per LB of Phosphorous: $13,500.00 Dear Pilar, This letter is to confirm the availability to your project (referenced above) of authorized Nutrient Credits sufficient to meet your above referenced estimated requirements of Nutrient Credits at our Rivanna River nutrient offset credit bank facility (the "Bank"). The Bank has been registered with the Virginia Department of Environmental Quality (DEQ). These Nutrient Credits are generated and managed under the terms of the Reduction Implementation Plan for the Bank dated November 2017. which was authorized by (DEQ) on September 5, 2018. The Bank has been authorized to provide Nutrient Credits for use in the James River watershed. These credits are transferable to those entities regulated under DEQ's Storm Water Management program in accordance with VA Code 62.1-44.15:27, If we can provide f'urthe istance please feel free to contact our office. Hotel Street Capi . -LC, Bank Sponsor By It, Mann '1 ,lames ss ❑ Nutrient Offset Trading Bank, 31 Garrett Street, Warrenton, Virginia 20186 THE EXISTING SITE CONSISTS OF 2 PARCELS WITH A COMBINED AREA OF 19.51 ACRES. THE SITE HAS ABOUT 4.05 ACRES OF IMPERVIOUS AREA WITH SEVERAL TRAILERS AND GRAVEL LOTS SURROUNDED BY DEVELOPED GRASSED AREA. THE REMAINDER OF THE SITE CONSIST OF MOSTLY WOODED AREAS. EXISTING GRADES ON SITE ARE MOSTLY BETWEEN 1 % AND 50 %WITH SEVERAL AREAS OF PRESERVED STEEP SLOPES AS INDICATED ON THE PLANS. PART OF THE SITE DRAINS TO A SWALE RUNNING FROM NORTH TO SOUTH WITHIN THE PROPERTY LINE AND OUTFALLS TO POI 1 AT THE SOUTHERN PROPERTY LINE. THE WEST SIDE OF THE SITE DRAINS TO AN EXISTING INLET NEAR THE RIGHT OF WAY AND OUTFALLS ON THE OTHER SIDE OF ASHWOOD BOULEVARD AT POI 2. THE REMAINDER OF THE SITE MOSTLY SHEET FLOWS TO POI 3 ON THE EAST PROPERTY LINE. AREAS ALONG SEMINOLE ROAD ROUTE 29 WITHIN THE LOD CURRENTLY ARE CURBED AND DRAIN TO EXISTING INLETS ALONG ROUTE 29. PROPOSEDIMPROVEMENTS THE PURPOSE OF THIS PROJECT IS CONSTRUCT 4 APARTMENT BUILDINGS 6 STRIPS OF TOWNHOMES AMENITY AREAS ASSOCIATED PARKING AND UTILITY IMPROVEMENTS, AS WELL AS AN ON -SITE UNDERGROUND DETENTION SYSTEM. THE TOTAL DISTURBED AREA FOR THE CONSTRUCTION ACTIVITY IS ANTICIPATED TO BE APPROXIMATELY 18.55 ACRES. THERE WILL BE APPROXIMATELY 12.51 ACRES OF IMPERVIOUS AREA. STORMWATER NARRATIVE WATER QUALITY REQUIREMENTS FOR THIS SITE WILL BE MET THROUGH THE USE OF THE STORMTECH ISOLATOR ROW UNDERGROUND DETENTION SYSTEM (APPROVED BY DEQ FOR 40% TP REMOVAL EFFICIENCY), CONTECH COS HYDRODYNAMIC SEPARATOR APPROVED BY DECFOR 20% TP REMOVAL EFFICIENCY), AND BY PURCHASING 4.23 POUNDS OF NUTRIENT CREDITS ( Y). TO ENSURE THERE IS NO DEGRADATION TO THE STORMWATER QUALITY CAUSED BY THE DEVELOPMENT OF THIS SITE. WATER QUANTITY REQUIREMENTS WILL BE MET THROUGH THE USE OF THE ON -SITE UNDERGROUND DETENTION SYSTEM. THE SYSTEM WILL USE A WEIR OUTFALL STRUCTURE WITH A LOW -FLOW ORIFICE TO ATTENUATE THE POST DEVELOPMENT FLOWS TO MEET THE CHANNEL AND FLOOD PROTECTION REQUIREMENTS. THE PRE AND POST -DEVELOPMENT FLOW RATES FOR THE 1-YEAR, 2-YEAR, AND 10-YEAR STORM EVENTS FOR THIS SITE WERE CALCULATED USING THE SCS TR-55 METHOD IN THE PROGRAM AUTOCAD HYDRAFLOW HYDROGRAPHS, AS SHOWN ON SHEETS C-904 - C-906. THE CURVE NUMBERS USED IN THESE CALCULATIONS WERE CALCULATED USING THE VALUES FROM THE NRCS TR-55 TECHNICAL MANUAL, TABLE 2.2A, "RUNOFF CURVE NUMBERS FOR URBAN AREAS". RAINFALL DEPTHS USED TO CALCULATE FLOWS WERE FROM NOAA ATLAS-14 DATA FOR THE PROJECT SITE. PRE -DEVELOPMENT FLOWS: POI 1 POI 2 POI 3 1-YEAR 7.91 CFS 8.32 CFS 7.30 CFS 2-YEAR 12.22 CFS 12.47 CFS 11.11 CFS 10-YEAR 26.90 CFS 24.62 CFS 23.95 CFS POST -DEVELOPMENT FLOWS: POI P012 P013 1-YEAR 1.52 CFS 4.56 CFS 2.49 CFS 2-YEAR 3.82 CFS 10.16 CFS 3.93 CFS 10-YEAR 26.85 CFS 22.33 CFS 8.88 CFS AS SHOWN, THE RUNOFF FROM THE 10-YEAR STORM EVENT HAS BEEN REDUCED IN THE POST -DEVELOPMENT CONDITION TO LEVELS BELOW THE PRE -DEVELOPMENT CONDITION; THEREFORE MEETING THE FLOOD PROTECTION REQUIREMENT UNDER 9VAC 25-870-66.C.2.B. AS SHOWN ON THE ENERGY BALANCE CALCULATIONS ON THIS SHEET, THE REDUCTION IN THE POST -DEVELOPMENT FLOWS IS SUFFICIENT TO SATISFY THE ENERGY BALANCE EQUATION; THEREFORE MEETING THE CHANNEL PROTECTION REQUIREMENT UNDER 9VAC 25-870-66.B.1.B. DRAINAGE FROM THE OFFSITE IMPROVEMENTS ON ROUTE 29 SHEET FLOW TO EXISTING INLETS. INLET CALCULATIONS WERE PERFORMED ON BOTH INLETS FOR PREDEVELOPMENT AND POST DEVELOPMENT CONDITIONS AND IT WAS DETERMINED THAT NO MAJOR IMPACTS TO THE EXISTING SYSTEM WOULD BE CAUSED BY THE SLIGHT INCREASED IMPERVIOUS AREA. BOTH CHANNEL PROTECTION AND FLOOD PROTECTION REQUIREMENTS ARE MET FOR POI 4 UNDER SUBSECTION D OF REGULATION 9VAC25-870-66. BEST MANAGEMENT PRACTICES NARRATIVE SINCE THE SUBJECT SITE IS AN EXISTING DEVELOPED SITE, WATER QUALITY REQUIREMENTS FOR THE DEVELOPMENT OF THIS SITE WERE CALCULATED USING THE VIRGINIA RUNOFF REDUCTION METHOD (VRRM) REDEVELOPMENT SPREADSHEET. USING THIS SPREADSHEET IT WAS DETERMINED THAT THE DEVELOPMENT OF THIS SITE WOULD REQUIRE THE TREATMENT OF A TOTAL OF 17.17 LBIYEAR OF PHOSPHORUS REMOVAL. THE REMOVAL REQUIREMENT WILL BE MET THROUGH THE STORMTECH ISOLATOR ROW FILTRATION SYSTEM, CONTECH CDs HYDRODYNAMIC SEPARATORS, AND THE PURCHASE OF NUTRIENT CREDITS FOR THE REMAINING 24.6% OF THE REQUIREMENT. A NUTRIENT CREDIT AVAILABILITY LETTER HAS BEEN PROVIDED ON THIS SHEET, SHOWING MORE NUTRIENT OFFSET CREDITS ARE AVAILABLE TO BE PURCHASED WITHIN THE WATERSHED THAN ARE REQUIRED. SINCE THE PHOSPHORUS REMOVAL ACHIEVED BY THESE MEASURES MEETS THE AMOUNT REQUIRED BY THE VRRM REDEVELOPMENT SPREADSHEET, ALL STORMWATER QUALITY REQUIREMENTS FOR THIS PROJECT HAVE BEEN MET AND NO FURTHER ANALYSIS IS REQUIRED. CONCLUSION J 0 m Z z a W W W U) Z W 0 ZjZU) Z W H U W (DZW WU)5:W Zr(DHQof[n F W Q 2 W Z J>ZO WU)O Z Z)Q Q Z Q Z CA2 W ZFF OU Z of Q Q Q F of 00 G 0 Q O U C J (i a Q �Z� UyaZ > aJof U W I- U) REVISIONS REV DATE COMMENT 1 Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 SINCE THE 1-YEAR FLOW RATE IN THE POST DEVELOPED CONDITION MEETS ENERGY BALANCE REQUIREMENTS; AND THE 10-YEAR DRAWN BY: MEG / PM FLOW RATE IN POST DEVELOPED CONDITION IS LOWER THAN THE EXISTING FLOW RATE; AND THE PHOSPHORUS REMOVAL RATE CHECKED BY: RTY MEETS THE VRRM REDEVELOPMENT PHOSPHORUS REMOVAL REQUIREMENT; IT IS THE OPINION OF THE ENGINEER THAT DATE: 1017/2021 STORMWATER QUANTITY AND QUALITY REQUIREMENTS ARE SATISFIED FOR THIS PROJECT. CAD I.D.: SWP-0 ADEQUATE OUTFALL NARRATIVE THE EXISTING SITE DRAINS INTO A STORMWATER CONVEYANCE SYSTEM VIA AN EXISTING SWALE (IDENTIFIED AS POI 1) TO THE SOUTH OF THE SITE. IN THE PROPOSED CONDITIONS, THE DISTURBED AREA IS ROUTED THROUGH THE ONSITE, UNDERGROUND DETENTION SYSTEM CONTROLLED BY A WEIR STRUCTURE. THE UNDERGROUND DETENTION OUTFALLS INTO A RIPRAP OUTLET PROTECTION TO POI 1 WITH NO INCREASE IN FLOW. THE EXISTING POI 2 DRAINAGE AREA DRAINS TO AN EXISTING 18" RCP PIPE VIA GRATE INLET. IN THE PROPOSED CONDITIONS, THE DISTURBED AREA IS ROUTED THROUGH THE ONSITE, UNDERGROUND DETENTION SYSTEM CONTROLLED BY A WEIR STRUCTURE. THE UNDERGROUND DETENTION OUTFALLS INTO THE EXISTING 18" RCP SYSTEM WITH NO INCREASE IN FLOWS. THE EXISTING POI 3 DRAINAGE AREA SHEET FLOWS OFF THE SITE TO THE EAST PROPERTY LINE. IN THE PROPOSED CONDITION, THE AREA SIGNIFICANTLY DECREASE TO POI 3; THEREFORE, THERE IS NO INCREASE IN FLOW TO POI 3. BASED ON AN ANALYSIS OF THE EXISTING INLETS IN THE EXISTING AND PROPOSED CONDITION, IT WAS DETERMINED THAT THE DRAINAGE AREA TO P014 CAUSES NO MAJOR IMPACTS TO THE EXISTING SYSTEM. SINCE THE OVERALL FLOWS TO POI 1, 2, AND 3 FOR THE 1-YEAR AND 10-YEAR STORM EVENTS ARE REDUCED WITH THE DEVELOPMENT OF THIS SITE, AND THE ROAD IMPROVEMENTS DRAINAGE TO POI 4 CAUSES NO MAJOR IMPACTS TO THE EXISTING SYSTEM, THE OUTFALLS SHOULD BE CONSIDERED ADEQUATE. AS SUCH, IT IS THE OPINION OF THE ENGINEER THAT ADEQUATE OUTFALL REQUIREMENTS HAVE BEEN MET FOR THE SUBJECT SITE. EAR ERGY BALA ` CE Site: County: Storm Event: 24-Hour Rainfall Depth: RST Residences Albemarle 1 Year 3.0" (Per NOAA Atlas 14) Point of Interest ID 1 1 2 1 3 1 Comments Pre -Development Q, Flow (cfs) 7.91 8.32 7.30 CN, Curve Number 71 73 72 RV, Runoff Depth (in) 0.76 0.86 0.81 RV per Tables 11 -C-27,1 1 -C- 30,11-C-32, 11-C-38 Drainage Area, Ac 6.85 6.27 5.89 RV, Runoff Volume (Ac-In) 5.21 5.38 4.76 Post -Development Q, Flow (cis) 1.52 4.56 2.49 I.F. 0.80 0.80 0.80 Improvement Factor CN, Curve Number 89 82 69 RV, Runoff Depth (in) 1.90 1.38 0.67 RV per Table 11-C-27,11-C- 36,11-C-37, 11-C-43 Area, Ac 11.18 5.56 2.27 RV, Runoff Volume 21.24 7.67 1.52 Energy Balance (EB) Q, Post-Dev (cfs) 1.52 4.56 2.49 I.F. * Q pre * RV pre 1.55 4.67 7.30 Or Post-Dev Allowable (cis) RV post EB Achieved Yes Yes Yes Notes: 1. Q Post-Dev must always be less than or equal to Q Pre-Dev 2. Q Post-Dev is not required to be less than that calculated in the equation (Q forest x RV forest)/RV Post-Dev 3. I. F. = 0.8 for sites > 1.0 acre, 0.9 for sites <_ 1.0 acre 4. RV tables per VA SWM Handbook, CH 11, App 11-C PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH RYAN YAUZ•iER Lic. No. 0402056625 10/07/2021 SHEET TITLE: STORMWATER COMPLIANCE SHEET SHEET NUMBER: C-903 ORG. DATE - 10/7/2021 1 2 3 4 7 Hydrograph Report Hydrograph Report Hydrograph Report Hydrograph Report Hydrograph Report Hydraow Hydrographs Extension for AutedeSk®CMI 3M by Autotleek. Inc. v2020 Thusday. 10171=1 Hydrafiow Hydrographs Extension for AutodefWCMI 3M by Autedersk, Inc. J2020 Thureft, 1017 12021 Hydrafiow Hydrogmphs Extension for A Weserc CMI 3M by Autodersk, Inc. J2020 Thusday. 10171=1 Hydni Hydrographs Extension for Autederi CMI 3M by Auteel Inc. Q020 Thuretlay, 10/71=1 Hydrafiow Hydrographs Extension for Aumdesk® CM13M by Autcei Inc. v2020 Thureday, 1017/=1 Hyd. No. 1 Hyd. No. 3 Hyd. No. 4 Hyd. No. 5 Hyd. No. 7 Pre-Dev POI #1 Post-Dev to POI #1 Post-Dev Undetained to POI #1 Post-Dev to Vault 1 Total Post-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 7.909 cfs Hydrograph type = SCS Runoff Peak discharge = 35.19 cfs Hydrograph type = SCS Runoff Peak discharge = 0.367 cfs Hydrograph type = Reservoir Peak discharge = 1.314 cfs Hydrograph type = Combine Peak discharge = 1.523 cfs Storm frequency = 1 yrs Time to peak = 720 min Storm frequency = 1 Yrs Time to peak = 716 min Storm frequency = 1 Yrs Time to peak = 718 min Storm frequency = 1 yre Time to peak = 808 min Storm frequency = 1 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 18,908 tuft Time interval = 2 min Hyd. volume = 73,305 tuft Time interval = 2 min Hyd. volume = 969 cult Time interval = 2 min Hyd. volume = 73,302 tuft Time interval = 2 min Hyd. volume = 74,271 tuft Drainage area = 6.850 ac Curve number = 71e Drainage area = 10.400 ac 9 Curve number = 91a Drainage area = 0.780 ac 9 Curve number = 61s Inflow h . No. = 3 - Post-Dev, to POI #1 Yd Max. Elevation = 459.01 ft Inflow h ds. = 4 5 Y Contrib. drain. area = 0.780 ac 0 Basin Sloe = 0.0 h P Hydraulic length Y 9 = Olt 0 Basin Sloe = 0.0 /o P Hydraulic length 9 = Olt 0 Basin Sloe = 0.0 /o P Hydraulic length = Olt Reservoir name =Vault 1 Max. Storage = 40 749 cult To method =TR55 Time of coot. (To) = 7.10 min To method =User Time Time of coot. (To) = 5.00 min To method =User Time . Time of coot. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Total precip. = 3.00 in Distribution = Type II Total precip. = 3.00 in Distribution = Type II Seri Indication matand used. Storm duration = 24 hrs Shape factor = 484 Storm duration = 24 hrs Shape factor = 484 Storm duration = 24 hrs Shape factor = 484 Coro tceri (erealCN)=1(1.620 xsel • (3.30() xa0) • (2.1W x Ni / 6.850 Pre-Dev POI #1 Q () Hyd. No. 1 -- 1 Year 8.00 6.00 4.00 2.00 Coro tceri (erealCN)=1(e.510 x0) • (o=x W) «(1.a30 x616 / IU.4o0 Post-Dev to POI #1 Q (1 Q (1 Hyd. No. 3 - i Year 8.00 40.00 6.00 30.00 4.00 20.00 2.00 10.00 0.00 � . 0.00 0 120 240 360 480 600 no 840 960 1080 1200 1320 1440 15M - Hyd No. 1 Time (min) 000 Coropoeits (ArealCN)= • (0.780 x61910.780 Post-0ev Undetained to POI #1 Q (lots) Q (cfs) Q (of$) Q (cfs) Hyd. No. 4-- 1 Year 0.50 40.00 0.45 0.40 30.00 0.35 0.30 0.25 20.00 0.20 0.15 10.00 0.10 0.05 Post-Dev to Vault 1 Hyd. No. 5 - 1 Year Q (lots) Q (1 40.00 2.00 30.00 20.00 1.00 10.00 0.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1660 0 240 480 720 960 1200 1440 1680 1920 2160 Time (min) Time (min) Time (min) - Hyd No. 3 -Hyd No. 4 -Hyd No. 5 -Hyd No. 3 ®Total storage used = 40,749 tuft 40.00 0.50 0.45 0.40 30.00 0.35 0.30 20.00 0.25 0.20 0.15 10.00 0.10 0.05 000 000 Total Post-Dev POI #1 Hyd. No. 7 -- 1 Year Q (of$) 2.00 1.00 0.00 - - 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 - Hyd No. 7 - Hyd No. 4 - Hyd No. 5 Time (min) 6 6 9 10 12 Hydrograph Report Hydrograph Report Hydrograph Report Hydrograph Report Hydrograph Report Hydrafiow Hydrographs Exteneion for Autodesel CivI 3M by Autodersk, Inc. Q020 Thuretley. 10171=1 Hydrafiow Hydrographs Extension for Autodesk® Civll 30e by Autodesk, Inc. 4020 Thuretlay. 101712MI Hydrafiow Hydrogrephs Extension for Atnedesk l I3D0by Autodesk,Inc.J2020 Thuretlay. 10171=1 Hydrafiow Hydrographs Entension for Autodesel CivI 3M by Autcel Inc. Q020 Thuretlay. 10171=1 Hydrafiow Hydrographs Extension for AWdei CivI 3M by Autodersk, Inc. Q020 Thursday1017: 2021 Hyd. No. 6 Hyd. No. 8 Hyd. No. 9 Hyd. No. 10 Hyd. No. 11 Pre-Dev POI #2 Post-Dev to POI #2 Post-Dev Undetained to POI #2 Post-Dev to Vault 2 Total Post-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 7.239 cfs Hydrograph type = SCS Runoff Peak discharge = 11.41 cfs Hydrograph type = SCS Runoff Peak discharge = 1.435 cfs Hydrograph type = Reservoir Peak discharge = 3.446 cfs Hydrograph type = Combine Peak discharge = 4.575 cfs Storm frequency = 1 yre Time to peak = 720 min Storm frequency = 1 yre Time to peak = 716 min Storm frequency = 1 yre Time to peak = 718 min Storm frequency = 1 yrs Time to peak = 724 min Storm frequency = 1 yre Time to peak = 718 min Time interval = 2 min Hyd. volume = 17,307 tuft Time interval = 2 min Hyd. volume = 23,039 cult Time interval = 2 min Hyd. volume = 2,877 tuft Time interval = 2 min Hyd. volume = 23,039 tuft Time interval = 2 min Hyd. volume = 25,916 tuft Drainage area = 6.270 ac Curve number = 71s Drainage area = 4.680 ac Curve number = 83s Drainage area = 0.880 ac Curve number = 75e Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 462.73 ft Inflow hyds. = 9, 10 Coi drain. area = 0.880 ac Basin Slope = 0.0 % Hydraulic length = 0lt Basin Slope = 0.0 % Hydraulic length = 0lt Basin Slope = 0.0 % Hydraulic length = 0lt Reservoir name = Vault 2 Max. Storage = 6,060 tuft To method = TR55 Time of coot. (To) = 8.70 min To method = User Time of coot. (To) = 5.00 min To method = User Time of conic. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Total precip. = 3.00 in Distribution = Type II Total precip. = 3.00 in Distribution = Type II storage Indication method used. Storm duration = 24 hrs Shape factor = 484 Storm duration = 24 hrs Shape factor = 484 Storm duration = 24 hrs Shape factor = 484 •Cumpaat6e (firWCN)=1(1.2&Ix86)«(2A10xff «(2.800x89 /8.270 Pre-Dev POI #2 Q (cft) Hyd. No. 6 -- 1 Year 8.00 6.00 4.00 2.00 000 •Compoat6e(MeICN)'I12.83o x9e)«(0.500 x80)«(1.350x613/4.660 •CompoNle(A N)=k0.310 xg8)«(0.510 x611total Post-Dev to POI #2 Post-0ev Undetained to POI 92 Q (1 Q (o) Hyd. No. 8 -- 1 Year Q (1 Q (c) Hyd. No. 9 - 1 Year 8.00 12.00 10.00 6.00 8.00 4.00 6.00 4.00 2.00 2.00 000 000 12.00 2.00 10.00 8.00 6.00 1.00 4.00 2.00 000 000 Post-Dev to Vault 2 Total Post-Dev POI #2 Q (i Q (cft) Hyd. No. 10 - 1 Year Q (cfa) Q (cft) Hyd. No. 11 - 1 Year Q (Cfs) 2.00 12.00 10.00 8.00 1.00 8.00 4.00 2.00 000 000 12.00 5.00 10.00 4.00 8.00 3.00 6.00 2.00 4.00 1.00 2.00 000 000 5.00 4.00 3.00 2.00 1.00 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1500 0 120 240 360 400 600 720 840 960 1080 1200 1320 1440 1560 0 120 240 360 400 600 720 840 960 1080 1200 1320 1440 1560 0 120 240 360 400 600 720 840 960 1080 1200 1320 1440 1500 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - Hyd No. 6 Time (min) -Hyd No. 8 Time (min) - Hyd No. 9 Time (min) Time (min) Time (min) - Hyd No. 10 -Hyd No. 8 Total storage used = 6,060 tuft - Hyd No. 11 -Hyd No. 9 -Hyd No. 10 Hydrograph Report 13 14 Hydrograph Report z II W W W U) z W W 0 2i Z W�OW> O Z W W W� W z}c7=oxm � W Q 2 W Z J>ZUWWO z U) Q Q Z Q u)2 W ZFH 0zW<QtO Z J O C2� W Z Q U) Z 0_ Q J 0_ Q Q' > J � O U) W 1- REVISIONS REV I DATE I COMMENT VI Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AN DIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: SWP-0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA Hydri Hydrograph Edentidn forA eskO Civil 30e by Mbef ek, Inc. v2020 Thursday, 10171=1 Hydri Hydrographs E,deneion forAtadesk® Civil 3M by Autodeek, Ine. J2U2U Theme, 10171=1 Hyd. No. 12 Hyd. No. 13 B O H L E R 1 Pre POI #3 -Dev Post-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 7.301 cfs Hydrograph type = SCS Runoff Peak discharge = 2.485 cfs Storm frequency = 1 yrs Time to peak = 720 min Storm frequency = 1 yrs Time to peak = 718 min 9100 ARBORETUM PKWY, SUITE 360 Time interval = 2 min Hyd. volume = 17,277cuft Time interval = 2 min Hyd. volume = 5,173cuft RICHMOND, VIRGINIA 23236 Drainage area = 5.890 ac Curve number = 72e Drainage area = 2.270 ac Curve number = 69" Basin Slope = 0.0 % Hydraulic length = 0 ft Basin Slope = 0.0 % Hydraulic length = 0 ft Phone: (804) 893-8200 To method = TR55 Time of loon. (To) = 8.50 min To method = User Time of conic. (To) = 5.00 min Total precip. Stone duration = 3.00 in = 24 hrs Distribution Shape factor = Type II = 484 Total precip. Stone duration = 3.00 in = 24 hrs Distribution Shape factor = Type II = 484 VA@BohlerEng.com 'Compoelte(Arw/CN)•In.180 x9e)«(1.910 x60)«(2.100 1/ 61 'Cumpoeh(AreelCN)•I(0.520 x96)«(1.760 x61)I/2.2'r0 II77 THiR?"p Pre-Dev POI #3 Post-Dev POI #3 Q (lots) Hyd. No. 12 -1 Year Q (lots) Q (cls) Hyd. No. 13 -1 Year Q (Cfs) O V 8.00 8.00 3.00 3.00 N YA 6.00 4.00 2.00 6.00 2.00 4.00 1.00 2.00 2.00 1.00 Lic. No. 0402056625 10/07/2021 SHEET TITLE: STORMWATER COMPLIANCE SHEET SHEET NUMBER C-904 0.00 - 0.00 0 120 240 360 480 600 720 $40 960 1080 1200 1320 1440 15W - Hyd No. 12 Time (min) 0.00 -'- 0.00 0 120 240 300 480 600 720 840 9W 1080 1200 1320 1440 15M Hyd No. 13 Time (min) ORG. DATE - 10/7/2021 Hydrograph Report 15 Hydreflow Hydrographs Extension for Autoderi CNII 3Da by Autodesk, Inc, Q020 noursi 10 171 M21 Hyd. No. 1 Pre-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 12.22 ds Storm frequency = 2 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 28,367 cult Drainage area = 6.850 ac Curve number = 71' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 7.10 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 -Comprwih (NWCN)= [n A20 x 98)+(3.300 x 60)+(2.130 x69)] 16.850 Pre-Dev POI #1 Q (o) Hyd. No. 1 -- 2 Year Q (i 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 0 12D 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - Hyd No. 1 Time (min) 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0 00 19 Hydrograph Report Hyd redder Hydrographs Extension for Autotlesk® CnII30® byitu[°tleek, Inc. QUO Thursday, 10 / 7/=1 Hyd. No. 6 Pre-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 11.19 cfs Storm frequency = 2 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 25,965 cult Drainage area = 6.270 ac Curve number = 71a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (To) = 8.70 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 his, Shape factor = 484 • CompaBs (AImmN1= 61280 of 98)+(2AI 80)+(2.600 z6Bti I6.2m Pre-Dev POI #2 Q (c) Hyd. No. 6 - 2 Year Q (ofs) 12.00 10.00 8.00 6.00 4.00 2.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12W 1320 1440 1560 - Hyd No. 6 Time (min) 12.00 10.00 8.00 6.00 4.00 2.00 0 00 Hydrograph Report 16 Hydraow Hydrographs Extension for Auscind QN1300 by Aueedesk, Inc. J020 Thursday, 1017 12021 Hyd. No. 3 Post-Dev to POI #1 Hydrograph type = SCS Runoff Peak discharge = 44.50 ds Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 93,965 cult Drainage area = 10.400 ac Curve number = 91a Basin Slope = 0.0 % Hydraulic length = 0lt Tc method = User Time of oonc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 p- •� al ll---------- It 11 ---------- -I----- ---- 1 11 111 I 1 11 11111111111111111111111111111111111111111111111111111111,1111111111111111111111111111111111111111111111111111111111111111111111111,111111111111111111,11111111111111111111111111111111111111 IIIIIIIIIIIIIIIIII11111111111111111111111111111111111111,IIIIIIIIIIIIIIIIII11111111111111111111111111111111111, I11111111111111111,111111111111111111, 1111111111111111111- 1 11 1 11 1111111111111111111111111111111111111,111111111111111111,1111111111111111111111111111111111111111111111111111,1 111111111111111111111111111111111111,11111111111111111111111111111111111111 1 11 N 11 1 :.1 -:1 .:1 11 21 Hydrograph Report Hydrai Hydrographs Extension for Autodak® Civ11300 by Autodesk, Inc. Q020 Thursday, 10 / 7I2021 Hyd. No. 8 Post-Dev to POI #2 Hydrograph type = SCS Runoff Peak discharge = 15.41 ds Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 31,215 cult Drainage area = 4.680 ac Curve number = 83" Basin Slope = 0.0 % Hydraulic length = 0lt To method = User Time of conc. (To) = 5.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Cpmpabe (AtaICN) =112.830 x 9a) + (0.500 x 80) + (1.35011111 / 4.680 Post-Dev to POI 92 Q (cf) Hyd. No. 8 -- 2 Year Q (cfs) 18.00 15.00 12.00 9.00 6.00 3.00 0 00 18.00 15.00 12.00 9.00 6.00 3.00 0.00 0 120 240 30D 480 600 72D $40 960 1080 1200 1320 1440 Hyd No. 8 Time (min) 2 YEAR STORM HYDROGRAPHS Hydrograph Report 17 Hydrograph Report 16 Heroinow Hydogrephs Extension for Autodesk® CMI30® by Au[°desk, Inc, Q020 Thurs4ay, 10 / 7/=1 Hyd. No. 4 Post-Dev Undetained to POI #1 Hydrograph type = SCS Runoff Peak discharge = 0.752 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 1,666 tuft Drainage area = 0.780 ac Curve number = 61a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 -Ccmpaee(Aoeiri +(0.730 x Ni/ 0.780 Post-Dev Undetained to POI #1 Q (cr) Hyd. No. 4 -- 2 Year Q ( ) 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0 00 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 0 12D 240 360 480 600 720 840 960 1060 1200 1320 1440 150D - Hyd No. 4 Time (min) 22 Hydrograph Report HyHreeov Hydrographs Extension for Aurotlesk0 CNII3D® by i u[°dee, Inc. QUO Thursday. 10 17 12021 Hyd. No. 9 Post-Dev Undetained to POI #2 Hydrograph type = SCS Runoff Peak discharge = 2.077 cis Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 4,155 cult Drainage area = 0.880 ac Curve number = 75a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (To) = 5.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Composite (AreelCN)= [(0.340 zB8)+(0.540 z81)] / 0.880 Post -Dery Undetained to POI #2 Q (c1s) Hyd. No. 9 -- 2 Year 3.00 2.00 1.00 Q (i 3.00 2.00 1.00 0.00 0.00 0 12D 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - Hyd No. 9 Time (min) Hydreeow Hydrographs Extension for Autodes1c) CNII3D® by i u[°dee, Inc. QUO Thursday. 10 / 7/=1 Hyd. No. 5 Post-Dev to Vault 1 Hydrograph type = Reservoir Peak discharge = 3.726 cfs Storm frequency = 2 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 93,962 cuft Inflow hyd. No. = 3 - Poto POI #1 Max. Elevation = 459.59 It Reservoirname= Vault 1 Max. Storage = 48,299 cult stooge Indication method used. Hydrograph Report 20 Hydrai Hydmgraphs Extension for Au edesk0 CNII 3De by Misdeal , Inc, QUO Thursday, 10 17 2021 Hyd. No. 7 Total Post-Dev POI #1 Hydrograph type = Combine Peak discharge = 3.824 cfs Storm frequency = 2 yrs Time to peak = 746 min Time interval = 2 min Hyd. volume = 95,628 tuft Inflow hYd s. = 4 5 , Contrib. drain. area = 0.780 ac Post-Dev to Vault 1 Q (of$) Q (xis) Q (cfs) Hyd. No. 5 - 2 Year 11111111111111111111,111111111111111111111111111111111111111111111111111111111111111,11111111111111111111,11111111111111111111,1111111111111111111111111111111111111111111111111111111111111111, �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lllllllllllllllll, 11111111111111111111111111111111111111111,11111111111111111111,1111111111111111111111111111111111111111111111111111111111111111, --IIIIIIIIIIIIIIIIII, 11111111111111111111111111111111111111111,11111111111111111111,1111111111111111111111111111111111111111111111111111111111111111, 1 11 I I I Total Post-Dev POI #1 Hyd. No. 7 - 2 Year Q (ds) 4.00 3.00 2.00 1.00 0.00 0 240 480 720 960 12DO 1440 1680 1920 2160 0 240 480 720 960 1200 1440 1680 1920 2160 Hyd No. 5 - Hyd No. 3 ® Total storage used = 48,299 slim Time (min) _ Hyd No. 7 - Hyd No. 4 - Hyd No. 5 Time (min) Z W W Wz W U)W Ed21Z OWyZ0l(DU)W Z}(71_pxU) W Q 2 W Z z W U) zU) <zQ Z02 LUZ FH �zof QQQ~ly O Z J O 0=) W Z Q U) d J Q 0_ Z Q (Z' J � O O W REVISIONS REV I DATE I COMMENT VI 23 24 • Hydrograph Report Hydrograph Report Hyderi Hydrographs Extension for Autoderea Civil 3Da by Au[ptlak. Inc. QUO Toured", 10/7/2021 Hnoodi Hydrographs Extension for Aurotleska, Civil Xis by Aut°desk, Inc. QUO TMxedey, 10/712021 Hyd. No. 10 Hyd. No. 11 Know what's bBIOW. Post-Dev to Vault 2 Total Post-Dev POI #2 Call before you dig. Hydrograph type = Reservoir Peak discharge = 9.065 ds Hydrograph type = Combine Peak discharge = 10.16 cfs ALWAYS CALL 811 Storm frequency = 2 yrs Time to peak = 722 min Storm frequency = 2 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 31,215 cult Time interval = 2 min Hyd. volume = 35,370 volt It's fast. It's free. It's the law. Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 463.33 It Inflow hyds. = 9, 10 Contrib. drain. area = 0.880 ac Reservoir name = Vault 2 Max. Storage = 7,795 cult 6bmge l°°°°t memod sari. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AN DIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION Post-Dev to Vault 2 Total Post -Dent, POI 02 DOCUMENT UNLESS INDICATED OTHERWISE. Q(> Q(i Q(> Q(d3> Hyd. No. 10 -2 Year Hyd. No. 11 -2 Year PROJECT No.: V192076 18.00 18.00 12.00 12.00 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 15.00 15.00 10.00 10.00 CAD I.D.: SWP-0 PROJECT: 12.00 12.00 8.00 8.00 VIRGINIA STORMWATER 9.009.00 6.006.00 MANAGEMENT PLAN FOR 6.00 6.00 4.00 4.00 3.00 3.00 2.00 RST RESIDENCES # I I 0.00 0.00 0.00 0.00 0 12D 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 0 12D 240 360 480 600 720 840 960 1080 12M 1320 1440 1560 - Hyd No. 10 - Hyd No. 8 ® Total storage used = 7,795 ct18 Time (min) _ Hyd No. 11 - Hyd No. 9 - Hyd No. 10 Time (min) PROPOSED LOCATION: 25 Hydrograph Report Hydo6av Hydographe btenaion for Aulodake DNA Note by Aubdak, Inc. v2020 ThxWry, 10 / 7/ 2021 Hyd. No. 12 Pre-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 11.11 ds Storm frequency = 2 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 25,660 cuft Drainage area = 5.890 ac Curve number = 72- Basin Slope = 0.0 % Hydraulic length = Oft To method = TR55 Time of conc. (Tc) = 8.50 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Compote (AresmNl • I(1.180 x BB)+(1.B10x BO)+12.800 zBBq I5.BB0 Pre-Dev POI 93 SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 26 ALBEMARLE COUNTY, VA Hydrograph Report Hydo6av Hydrographs btasion for Aulodake DNA Note by Aubdak, Int. v2020 ThunI 10 / 7 12021 Hyd. No. 13 Post-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 3.926 ds Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 7,931 cuft Drainage area = 2.270 ac Curve number = 69a Basin Slope = 0.0 % Hydraulic length = Oft To method = User Time of conc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 -Cpmpp(AGN)=[(0.520x98)+(1.750x81)]/2.270 Q (C) Hyd. No. 12 - 2 Year Q Off) Q (da) 12.00 10.00 8.00 8.00 4.00 2.00 0 00 Post-Dev POI #3 Hyd. No. 13 -- 2 Year Q(i 4.00 3.00 BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com �4.A�-TH Ctw Lic. No. 0402056625 10/07/2021 4 SHEET TITLE: 2.00 STORMWATER COMPLIANCE 1.00 SHEET 0.00 0 12D 240 300 480 600 720 840 960 1080 1200 1320 1440 150D 0 12D 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Time (min) - Hyd No. 12 -Hyd No. 13 12.00 4.00 10.00 3.00 8.00 6.00 2.00 4.00 1.00 2.00 DDD 000 SHEET NUMBER C-905 ORG. DATE - 10/7/2021 Hydrograph Report 27 Hydrsfiow Hydmgmphs Eldenslon for Auledmke WI 30s, by Autotleek, Inc, Q020 Thursday. 10 / 7/=1 Hyd. No. 1 Pre-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 26.90 cfs Storm frequency = 10 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 61,615 cuft Drainage area = 6.850 ac Curve number = 71' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 7.10 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 -Comprwita (ArWCN)= [n A20 x 98)+Is.=x SO) +(2.130 x691] 16.893 Pre-Dev POI #1 Q lots) Hyd. No. 1 - 10 Year Q (de) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12DD 1320 1440 1560 - Hyd No. 1 Time (min) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 31 Hydrograph Report Hyd cum Hydmgmphs EMnspn for AutodeskO C 113D5 by Autedeek Inc. Y2020 Thursday 10/7/=1 Hyd. No. 6 Pre-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 24.62 ds Storm frequency = 10 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 56,398 cuft Drainage area = 6.270 ac Curve number = 71a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (To) = 8.70 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Comppsce (A esrCN)= [(1280 x 98)+(2.410x 80)+(2.600 xON I s= Pre-Dev POI #2 Q (c1s) Hyd. No. 6 - 10 Year Q (ars) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 Hydrograph Report 26 Hydrs6ow Hydrograph. E#anNon for Autedeek ,CM13DO by Aubtleek. Inc. J 020 Thursday. 10171=1 Hyd. No. 3 Post-Dev to POI #1 Hydrograph type = SCS Runoff Peak discharge = 72.06 ds Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 157,122 cuft Drainage area = 10.400 ac Curve number = 91a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of oonc. (Tc) = 5.00 min Total precip. = 5.47 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 33 Hydrograph Report Hydrsfi. Hydmgrsphe ExmnNm forAutadeek® C10 30e by Autodesk, Inc. Q020 Thursday. 10 / 7/=1 Hyd. No. 8 Post-Dev to POI #2 Hydrograph type = SCS Runoff Peak discharge = 27.77 ds Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 57,373 cult Drainage area = 4.680 ac Curve number = 83a Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of conc. (To) = 5.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Compaed s (ArsaCN) = k2.830 x 88) + (0.500 x 60) + (1.350 x 613 / 4.680 Post-Dev to POI 92 0 () Hyd. No. 8 - 10 Year Q (CIFS) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 10 YEAR STORM HYDROGRAPHS 29 Hydrograph Report Hydrsfiow Hydmgmphs Egensbn for Auledmk0 WI"by Au[odesk, Inc, Q020 Hyd. No. 4 Post-Dev Undetained to POI #1 Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 2 min Drainage area = 0.780 ac Basin Slope = 0.0 % Tc method = User Total precip. = 5.47 in Stone duration = 24 hrs -Cemppe8e (ArWCN)= +(0.78) x 61)] / 0.780 Q (cfs) 3.00 2.00 1.00 Thursday, 10/7/2021 Peak discharge = 2.191 cfs Time to peak = 718 min Hyd. volume = 4,405 aft Curve number = 61a Hydraulic length = 0 ft Time of conc. (Tc) = 5.00 min Distribution = Type II Shape factor = 484 Post-Dev Undetained to POI #1 Hyd. No. 4 - 10 Year 0 (ds) 3.00 2.00 1.00 0.00 ' ' 0.00 0 12D 240 360 480 600 720 840 960 1080 12DD 1320 1440 1560 No. 4 Time (min) - Hyd 34 Hydrograph Report Hydrsfiow Hydmgrsphs ExIenskm for Auledmk9 WI 3D0 by Autedesk, Inc. V2020 Tlaxedry, 10 17 /=1 Hyd. No. 9 Post-Dev Undetained to POI #2 Hydrograph type = SCS Runoff Peak discharge = 4.201 ds Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 8,492 cuft Drainage area = 0.880 ac Curve number = 75a Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (To) = 5.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Cumprsire (AreaICN)= [(0.340 x98)+(0.540 x81)] 10.880 Post-Dev Undetained to POI 02 0 ids) Hyd. No. 9 - 10 Year Q Ida) 5.00 4.00 3.00 2.00 1.00 000 5.00 4.00 3.00 2.00 1.00 000 z a W 30 32 Z W fn Hydrograph Report Hydrograph Report � af � z WFzwj HydWm Hydmgmphs ENension kr Autseake CN113D0 by Autedesk, Inc. V2020 Thursday. 10171=1 Hydrsfiow Hydmgmphs ENenslon for Auledmke WI SIDE by Aubedeek, Inc. Q020 ThunnI 10/7/2021 W (9 2 0 0 of Ur ZW WU) jW Hyd. No. 5 Hyd. No. 7 z w 0= w z Post-Dev to Vault 1 Total Post-Dev POI #1 J > z U W 1n _O Hydrograph type =Reservoir Peak discharge = 25.77 cfs Hydrograph type = Combine Peak discharge = 26.85 ds U) of Q < m O U)of< IX Q Storm frequency = 10 yrs Time to peak = 724 min Storm frequency = 10 yrs Time to peak = 722 min Z U) W Q Z Z z 1-- Time interval = 2 min Hyd. volume = 157,120 cuft Time interval = 2 min Hyd. volume = 161,525 cuft O 0 Q d - H of Inflow hyd. No. = 3 - Post-Dev to POI #1 Max. Elevation = 461.48 It Inflow hyds. = 4, 5 Contrib. drain. area = 0.780 ac U Z U ~ d Reservoir name = Vault 1 Max. Storage = 70,503 cult Z < O 0 U) O 0 Z) W Z Of Cl) Q (n ll Z stp InakaSon maenad sass. Q 'S9a J 0_ Q Q' J y- O U W Post-Dev to Vault 1 Total Post-Dev POI #1 Q (Cfs) Hyd. No. 5 - 10 Year 0 (ols) 0 (ram) Hyd. No. 7 - 10 Year Q (cs) 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 000 I I I 24.00 :III 20.00 50.00 16.00 III 1130.00 8.00 11110.00 4.00 -Affl- Inn r r I I r I I r I �-- ttttttttttttttt�---� --- ----- i�i�i�llllllllllllllllll�lllllllllllllllllll�lllllllllllllllllll�lllllllllllllllllll�filllllllllllllllllll� • i�i�i� ��i�i��� --- ------ •' • i�i�i� �i�i�i�i�i� ■-- i�i�i�I�i�i�i�i�i� ■-- ��i�l��i�i��� ■-- ---,------ ■-- --------- --- �_----- 0 240 480 720 960 12DO 1440 1680 1920 2100 0 240 480 720 960 1200 1440 1680 1920 2160 Hyd No. 5 - Hyd No. 3 ® Total storage used = 70,503 Cult Time (role) _ Hyd No. 7 - Hyd No. 4 -Hyd No. 5 Time (role) 35 36 Hydrograph Report Hydrograph Report HyHmfim Hydmgmphs Enension for AutcdeskO Civil 30s, by Autsdesk, Inc. Y2020 Thursday 10171=1 Hycnum Hydrograph. E4enslon for AulodeskO Civil 3De by Autodeek, Inc. V1020 Thursday, 10/712021 15 Hyd. No. 10 Hyd. No. 11 Know what's bBIOW. Post-Dev to Vault 2 Total Post-Dev POI #2 Call before you dig. Hydrograph type = Reservoir Peak discharge = 18.83 ds Hydrograph type = Combine Peak discharge = 22.33 ds ALWAYS CALL 811 Storm frequency = 10 yrs Time to peak = 720 min Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 57,373 cuft Time interval = 2 min Hyd. volume = 65,864 cult It's fast. It's free. It's the law. Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 464.83 ft Inflow hyds. = 9, 10 Contrib. drain. area = 0.880 ac Reservoir name = Vault 2 Max. Storage = 11,773 cult Storage lndicabon method used. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL ANDIOR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION Post-Dev to Vault 2 Total Post-Dev POI 92 DOCUMENT UNLESS INDICATED OTHERWISE. Hyd. No. 10 -10 Year Q Ida) 0 We) Hyd. No. 11 - 10 Year Q ids) PROJECT No.: V192076 28.00 24.00 20.00 16.00 12.00 8.00 4.00 000 28.00 24.00 24.00 20.00 20.00 16.00 16.00 12.00 12.00 8.00 8.00 4.00 4.00 000 000 24.00 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 20.00 CAD I.D.: SWP-0 PROJECT: 7600 VIRGINIA STORMWATER 12.00 MANAGEMENT PLAN FOR 8.00 4.00 RST RESIDENCES 000 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560 0 120 240 360 480 600 72D 840 960 1080 1200 1320 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 0 12D 240 360 480 600 720 840 960 1080 12W 1320 1440 1560 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 156D - Hyd No. 6 Time (min) - Hyd No. 8 Time (min) _ Hyd No 9 Time (min) _ Hyd No. 10 - Hyd No. 8 ® Total storage used = 11,773 cut Time (min) _ Hyd No. 11 - Hyd No. 9 - Hyd No. 10 Time (min) PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 37 38 ALBEMARLE COUNTY, VA Hydrograph Report Hydrograph Report Hydre6bv Hydmgraphs Ebension for AWodaNl f L1NI 31340 by Autcdsdk Inc. v2020 TMxWry, 10 171 2021 Hyd. No. 12 Pre-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 23.95 cfs Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 54,857 cuft Drainage area = 5.890 ac Curve number = 72a Basin Slope = 0.0 % Hydraulic length = 0 ft To method = TR55 Time of conc. (To) = 8.50 min Total precip. = 5.47 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 ' composite (AesssMo • [(1.180 x 98)+(1.910x SO) +(2.800 x69q 15.890 Pre43ev POI #3 Hydrall. Hydngrepha Ebenaion for AWodaNl f L1NI 3134, by Autede d, Inc. v2020 Thursday. 10 / 7 12021 Hyd. No. 13 Post-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 8.883 ds Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 17,811 cult Drainage area = 2.270 ac Curve number = 69a Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of conc. (To) = 5.00 min Total precip. = 5.47 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 -CampoNle (AreaIGN)= [(0.520 x98)+(1.750 x81)] /2.270 Post-Dev POI #3 BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _.a WH A-N. Hyd. No.12-10Year 0(cfS) 0(CIS) Hyd. No. 13 -- 10 Year a(ds) (� ((/h'TANYAl7�iER' y 24.00 20.00 16.00 12.00 8.00 4,00 000 24.00 10.00 20.00 8.00 16.00 6.00 12.00 4.00 8.00 2.00 4.00 000 000 10.00 e0 Lic. No. 0402056625 8.00 A 10/07/2021 t1�� NAI.E�G� 6.00 SHEET TITLE: STORMWATER 4.00 COMPLIANCE 2.00 SHEET SHEET NUMBER: °° C 906 0 12D 240 360 480 600 720 840 960 1060 120D 1320 1440 156D 0 12D 240 360 480 600 720 840 960 1080 12DD 1320 1440 1560 - Hyd No. 12 -Hyd No. 13 ime (min) Time (role) T ORG. DATE - 10/7/2021 = 479.67 479.00 FIFE = 479:Q0 GFE = 47A 31'-_ FF€ = 478.33 GF1'_`, 477.67 --------1 \\\ FFE F: 47�7.67 GFE =�47Y�.00 , FIFE =,*7.00 GFE 4�A:11 1 = 476.33 = 475.67 = 475.00 _1 25.97' I� • 4 •i ``` • 4 •`L FIFE = 481.67 GEE \ = 481.00 A. Ir FFE = 481.00 G�E I \ - '-I = 480.33 • I FFE=;�j8.33 GFE = 479.67 1 � 1-. = 479.67 GFE = 479.00 FIFE = 479:0,0 GFE = 47R 7, FIFE -- 478.33 GFE = 477.67 FFE = 477.67 GFE - =47r.66------- VAULT 1 PLAN VIEW PROP. ADS ISOLATOR ROW r q 5r A I I ➢ � II II I II II I II II I II II I II II I II II I ll �I I II II I II II ! II II I ,I II I co II II II I II II I i4 II I u n II II I II it I II II I II II I II II I II II I II II I II II I II II I II II I II II I � II II I I II I I II I I11 II I I II I I II I II I II III I II N II II I II II� I II II �I r0 J o O III I p I I I I Q r• I rn i 1 O �M i � I '` ' / • � 'e \ 0 a� / i 111�r'lI�B1 -:5) if GO _ \ ` I II III I 7 I` I 1 1' 1 j ~�'�•I II I I , \ ` p `p '-•` ADS ISOLATOR ROW 1` 11 `I i i 1 1 It 1 1 I I m O I II III y I I 490 II 25' I -� ---- , O #69.26 O I \TN�o I i 'r 1 'r '( 'r ' I `1 I -•.o ` Of8e1 1 ; 11 11 ' II i -'___ I II 11 I 1 1 ' 1 ' ' ' [ I ` • I 1 1 1 1 1 1 / •. C, , �• LT 1 11 1 It 1 11 ,1 1 11 ; •:' I I `_ ` `, 1` \ 1` 1 II t V I 1 ; 1 ® $TM / GRATE INLET / F-10 $' 1 11 [1 , m • p II 1 1 1 '1 1 /�`f:JB 12 a94.70 y10, 11VV A- J 1 /NU1 O � � ,'B= 55.e� \i i -1 / / 1 1 \ \ ' 0� 47875 /NV= Pond Report 5 Hydrallm Hydngraplls EIdemlon b ANodesk® CMI 3DB by Aulodesk, Inc. v2020 Thursday. 10 / 7/=1 Pond No. t - Vault t Pond Data UO Chambxa 4nwdeNv.=455.00fl Rwx$pen=B.00xa.00 fl, BertaILM=400.25 fl, No.Bpml6=4, 3bpe=0.m%, Haadam=No Stage / Storage Table Stage IN) Elevation IN) Contour area (sqe) Iner. Storage (cull) Total Morege (cuB) 0.00 455.00 Na 0 0 0.00 45 m We 4,231 4,23, 1.60 4S8.60 Na 7,351 11,582 2A0 457.40 Na 8.m 20,522 3.20 450.20 We 9,647 30,360 4.00 459A0 Na 10,268 40,657 4.00 459.80 We 10,287 50,945 5.60 460.60 Na am 60,789 6AO 461.40 Na elm 69,725 720 482.20 We 7,345 77,071 8.00 463.o0 We 4,225 81,296 Culvert ONBoe Structures Web Structures [A] [B] [C] [Prntarl [A] [B] [C] to) Rhea (In) = 2450 5.00 0.00 0.00 Cmat Lan IS) = 2.00 2.00 0.m 0.00 Span (in) =24.00 550 0.00 050 Creel El. IS) ="150 459.10 0.00 0.m No. Beetle = 1 1 0 a WWi C.e. = 3.33 3.33 3.33 533 Invert EI.(e) = 0. .m 454.01 0.00 O50 Weir Type = Ract Rect - - Length IN) = 7.60 0.67 0.00 0A0 Multi4lage = Yea Yee No No Slope(%) = 3.50 0.m 0.00 We N-Value • .013 .013 .013 We one. C . = 0.50 0.60 0.60 0.60 Ex6l.(Inrnr) = 0.000(by COMour) Mutil4fe. = We Yea No No TIN El.. (e) = 0.00 rue eulwrtanwmno..enamly..e untie, ll. (, e.eomel exc.. warn®.a.d>tl raonrwmrawm Area ewmmnm 0). Sage (a) Stage / Discharge Elan, (It) 0m 465.00 e.ao 46s.00 Soo 01.00 4.00 459.00 2.m 157.00 0.00 455.00 0.110 4.03 8.00 12.00 ie.w 20A0 2a00 2500 82.00 Saw 40.00 44.m Taal o Disclmr.(ore) Pond Report if Hydr mHydm mphsF ermimWANoda CM13Mby Aulodeak, Inc.v2020 Thursday. 10/7/=1 Pond No. 2 - Vault 2 Pond Data US Charn m4nved olev. = 460.00 A Mae x Span=6.00 x 6.00 It, Bane[ Lan = 161.W R, No. Barters=3. 3bpe=0.00%, Hwdam=No Stage / Storage Table SMI1s gq Elevation IN) Contour area (sqa) Iner. Sromge (cue) Total storage (cu1) 0.00 460.m Na 0 0 46 0.60 0.60 N. 712 712 1.20 461.20 No 1,2N i'me 1.80 461.80 Na 1,502 3A40 2A0 462.`10 No 1,654 5,103 3.00 463.m nla 1.729 6.831 346 60 3.60 N. 1,728 8.wo 4M /84.m No 1,654 10.214 4.80 464.80 We 1,501 11.715 5.40 465.40 No 1,234 12.NS 6.00 466.00 Na 710 13.6% Culvert/ Orlgw Structures Weir Structures [A] IS] [C] [PrfRar] [A] [B] [C] [D] Rae, (in) =law 9.00 0.00 am Croat Len (a) =4.00 In.dw 0.00 0.00 Spann) =law am OAO 0.0) Cmal EL IN) =116275 462.75 0.00 0.00 ft. Banal. = 1 1 0 a WaIr C4ae. = 3.33 3.33 3.33 3.33 Invart El.(1f) = 459.m 459.01 0.00 0A0 Weir Type = aee Rect - - LengBh(ft) = 36.80 0.67 0.00 0A0 Mum4tw = Yea Yea No No slope I%) = 0.50 0.00 0.00 We NWWuo = .013 .013 .013 Na one. Cosa. =0.60 0.60 0.60 0.60 ExeLpNho = 0.000(by Contour) Mutil4dga = We Yea No No TIN El.. (fl) = 0.00 • r eeeeeee�eeeeeee�eeeeeee� ttt�eeeeeee��eeeeeee�eeeeeee�B�� EEEEEEE.EEEEEEE.� C�CC�I �t�EEEEEEEBIBI♦��EEEEEEEBIEEEEEEBIEEEEEEBIBI�� �����eeeeeeeeeleeeeeeeeel�eeeee�I�� EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE�EI�EEEEEEEBIEEEEEEE� EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEE��EEEEEEEBIEEEEEEE� eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeee��eeeeeee�eeeeeee�eeeeeee� EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE�r��EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE� eeeeeee�eeeeeee�eeeeeee�eeeeeee� �eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee� eeeeeee�eeeeeee�eeee��eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee� EEEEEEEBIEEEEEEE��EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE� eeeeeee�eeeeel�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee� eeeeeee�eeeeel�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee� EEEEEEEBIEEE��EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE� eeeeeee�eeel�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee�eeeeeee� EEEEEEEBIE_��EEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEEBIEEEEEEE� EEEEEEI.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE.EEEEEEE. SECTION A -A SECTION A -A PSMDE VAULT 1 OUTLET STRUCTURE DETAIL NOT TO SCALE NOTE: CONTRACTOR TO PROVIDE SHOP DRAWINGS TO BOHLER ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO INSTALLATION PSMDE VAULT 2 OUTLET STRUCTURE DETAIL NOT TO SCALE NOTE: CONTRACTOR TO PROVIDE SHOP DRAWINGS TO BOHLER ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO INSTALLATION SECTION B-B SECTION B-B �UJ Z 2 W W W W C0z oW Z zZow WHUW > ZWWiWUW z 5 0 LU x r7) F W Q Ix W Z >z0woo m 7 m Q 10 Z Q zU)2 W ZFH 0ai zW< 0 Q J z W Z W O>_ d J FY U W H REVISIONS REV DATE I COMMENT DI Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT No.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 CAD I.D.: SWP-O PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com 577 _j LTH e.. F;M%N YAUZ"3ER Lic. No. 0402056625 1 10/07/2021 -J SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-907 VAULT 2 PLAN VIEW 30 15 7.5 30 ORG. DATE - 10/7/2021 FIBERGLASS SEPARATION CYLINDER ANDINLET TOP SLAB ACCESS (SEE FRAME AND COVER DETAIL) ° 7 A FLOW 7 FIBERGLASS SEPARATION CYLINDER ANDINLET INLET PIPE B (MULTIPLE INLET PIPES MAY BE ACCOMMODATED) t: OIL BAFFLE SKIRT SEPARATION SCREEN SOLIDS STORAGE SUMP MAX MAX. PLAN VIEW B-B N.T.S. CENTER OF CDs STRUCTURE, SCREEN AND SUMP OPENING TOP SLAB ACCESS 72- [18291 I.D. MANHOLE STRUCTURE :TOR TO GROUT TO GRADE ,�OUTLETPIPE CDS3020-6-C DESIGN NOTES THE STANDARD CDS3020-6-C CONFIGURATION IS SHOWN. ALTERNATE CONFIGURATIONS ARE AVAILABLE AND ARE LISTED BELOW. SOME CONFIGURATIONS MAYBE COMBINED TO SUIT SITE REQUIREMENTS. CONFIGURATION DESCRIPTION GRATED INLET ONLY (NO INLET PIPE) GRATED INLET WITH INLET PIPE OR PIPES CURB INLET ONLY (NO INLET PIPE) CURB INLET WITH INLET PIPE OR PIPES SEPARATE OIL BAFFLE (SINGLE INLET PIPE REQUIRED FOR THIS CONFIGURATION) SEDIMENT WEIR FOR NJDEP / NJCAT CONFORMING UNITS FRAME AND COVER (DIAMETER VARIES) N.T.S. SITE SPECIFIC DATA REQUIREMENTS STRUCTUREID WATER QUALITY FLOW RATE (CFS OR US) ' PEAK FLOW RATE (CFS OR US) ` RETURN PERIOD OF PEAK FLOW (YRS) ' SCREEN APERTURE(2400 OR 4700) ' PIPE DATA: I.E. MATERIAL DIAMETER INLET PIPE 1 ` INLET PIPE ' OUTLET PIPE ` RIM ELEVATION ` ANTI -FLOTATION BALLAST WIDTH HEIGHT NOTESISPECIAL REQUIREMENTS: ' PER ENGINEER OF RECORD _ GENERALNOTES PERMANENT 1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE. POOL ELEV. 2. DIMENSIONS MARKED WITH () ARE REFERENCE DIMENSIONS. ACTUAL DIMENSIONS MAY VARY. 3. FOR FABRICATION DRAWINGS WITH DETAILED STRUCTURE DIMENSIONS AND WEIGHTS, PLEASE CONTACT YOUR CONTECH ENGINEERED LLD REPRESENTATIVE. www.contechES.com 0SOLUTIONS m 4. CDs WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN THIS DRAWING. - 5. STRUCTURE SHALL MEET AASHTO HS20 AND CASTINGS SHALL MEET HS20 (AASHTO M 306) LOAD RATING, ASSUMING GROUNDWATER ELEVATION 9 AT, OR BELOW, THE OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO CONFIRM ACTUAL GROUNDWATER ELEVATION. 6. PVC HYDRAULIC SHEAR PLATE IS PLACED ON SHELF AT BOTTOM OF SCREEN CYLINDER. REMOVE AND REPLACE AS NECESSARY DURING I�331 F� MAINTENANCE CLEANING. m 4 INSTALLATION NOTES A. ANY SUB -BASE, 13ACKFILL DEPTH, AND/OR ANTI -FLOTATION PROVISIONS ARE SITE -SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE SPECIFIED BY ENGINEER OF RECORD. B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE CDs MANHOLE STRUCTURE (LIFTING CLUTCHES PROVIDED). C. CONTRACTOR TO ADD JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS, AND ASSEMBLE STRUCTURE. D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT PIPES. MATCH PIPE INVERTS WITH ELEVATIONS SHOWN. E. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO ASSURE UNIT IS WATER TIGHT, HOLDING WATER TO FLOWLINE INVERT MINIMUM. IT IS SUGGESTED THAT ALL JOINTS BELOW PIPE INVERTS ARE GROUTED. ELEVATION A -A N.T.S. Ulm. STORMTECH SC-740 CHAMBER Designed to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for private (commercial) and public application$¢. StormTech chambers can also be used In conjunction with Green Infrastructure, thus enhancing the performance and extending the service life of these practices STORMTECH SC-740 CHAMBER (not to scale) Nominal Chamber Specifications Ad 5 xWXH) 8.4"5.4x 51" x30" 2,170 mm It 1,295 mm x 762 mm Chamber Storage 45.9 ft3 (1.30 ml 24" (600 mm) Min. Installed Storage* DIAMETER MAX 74.9 fl3 (2.12 ins) 29.3" Weight ® p4a mm) 74.0lbs (33.6 kg) 12.2" -� (310 mm) -I 1` -..I 45 9" (1166 mm) Shipping 30 chambers/pallet 60 end caps/pallet 12 pallets/truck *Assumes 6" (150 mm) stone above, below and between chambers and 40%stone porosity. EMSEDMENTSMNE MHLLL BEACLEM. CRUSHEDMID ANGULAR STONE WITH ANAASHTO W3 DESIGNATION BETWEEN AS ANDW CHAMBERS SHALL MEET THE REQUIREMENTS FOR MTM FN1L POLYPROPLENE (PPI CHAMBERS OR A3TM F933 POLYETHYLENE IPEICHAMBERS ADS GEOSYTHETICS 631T NON -WOVEN GEOTE%TRE ALL AROUND CLEAN, CRUSHED. 30.062 mm) ' I� �I(7 I� (1295 mm) 90.7"ACTUAL ALLLENGTH H 85.4- (2169 mm) INSTALLED LENGTH GRANLAARNELLGRADED MOIUAGGREGATE MUOURES, <y5% MINES, COMPACT RISE (IN mm) WAX UFTs TO 95% PROCTOR DEN81T/. BEE TIE TABLE OF ACCEPTABLE FILL MATERIALS. 5 CW Mn SNMLMBEDESIGNEDINACC NCEWITHASTMWM AN6W0 PRACTICE FOR STRUCTURAL DESIGN OF THEBMOPIASTC CORRUGATEDWALLSTOA%VAT OCUECTIONCHHMSEW.. I�III I�I�' all�ll�1�1 I�Il , lli, II-1I- ....::.:. - ... WE CM mm) e (iMO mm)MIM PM R% V%IFn 1 mun CDS3020-6-C ENGINEERED SOLUTIONS LLC www.contechES.cwn 9025 Centre Pointe Dr., Suite 400, West Cheater, OR 45069 INLINE CDS STANDARD DETAIL BDO-338-1122 513£95-7000 513E45-7993 FAX CDS TYPICAL DETAIL GEPM OFSTGNE M BE DETERMINED BY BRE DEMGN ENGINEER4 (1 W mm) wN 1P (LOmm)MIN MOCA END cAP SITE DESIGN ENGINEER IS RESPCHSPHIE FOR C 7.7- 1•l (9001MI)TYP THE MSUNNGTHE REWIRED EEANMG (IN mm) MIN cAPACITr of sueaRADE srnLs 'MINIMUM COVI]iMB01TOA OF FLF.)DBLE PAVEMENT. FORUNPAVED INmALLATpNB WHERE RUTTING FlROM VEHICLES MAY OCWR INCREASE COVERM al' (BMDmm). SC-740 CUMULATIVE STORAGE VOLUMES PER CHAMBER Assumes 40% Stone Porosity. Calculations are Based Upon a 6" (150 mm) Stone Base Under Chambers. STORAGE VOLUME PER CHAMBER Fr 1067 45.90 (1.300) 74.90(2A21) 041 736(914) 45.90 1.300 73.77 2A89016 Slone 45.90 (1.300) 72.64(2.057) 91 Cover 45.90 1.300 71.52 2.0255 45.90 (1.30070.39(1.993) 45.90 1.300 69.26 1.96145.90 1.300 68.14(1.929)' 35 889 45.85 1.298 66.98 1.897) 34 864 45.69 1.294 65.75(1.862) 33 838 45.41 1.286 64.46 1.825 32 1 44.81 1.2 62.97(l.783) 31 78 44.011.24 61.361.737 30 62 43.08 1.21 59.66 1.68 28 37 41.981.1 57.891.639 28 11 40.80 1.155 56.05 1.587 27 686 39.54 1.120 54.17 1.534 26 660 38.18 1.081 52.23(l.479) 25 635 36.74 1.040 50.23 1.42 24 610 35.22 0.9 48.19 1.365 23 584 33.64 0.95 46.11 1.306 22 55 31.99 0.90 44.00 1.246 21 533 30.29 0.85 1.85 1.185 20 508 28.54 0.808 39.67 1.123 19 483 26.74 0.7 37.47(1.061) 18 457 24.89 0.705 35.23 0.99 17 432 23.00 0.651 32.96 0.939 16 406 21.06 0.59 30.68 0.869 15 381 19.09 0.541 28.36 0.803 14 356 1706 D.484 26.03 0.737 13 330 15.04 0.42 23.66 0.670 12 305 12.97 0.3 21.31 .6D8 11 79 10.87 0.30 18.92 0.535 10 54 8.74 0.24 16.51 0.468 9 229 6.58 0.18 14.09 0.399 8 D3 4.41 0.125 11.66 0.330 7 178 2.21 0.06 9.21 .264 6 152 0 0 6.76 0.191 5 127 0 o(o) 5.63 0.160 4 10 Stone dial 4.51 0.128 3 6 Foundation 0 0 3.38 0.oaol 2 1 0 2.25 0.064 125 00 1.130.03 Note: Assumes 6" (150 mm) stone above chambers, 6" (150 mm) row spacing and 40%stone porosity. AMOUNT OFSTONE PER CHAMBER Note: Assumes 6" (150 mm) of stone above and between chambers. VOLUME EXCAVATION PER CHAMBERYW (Ma) Note: Assumes 6" (150 arm) of row separation and 18" (450 mm) of cover. The volume of excavation will vary as depth of cover Increases. g9ppP Working on a project? s1QTTOTeQo- Visit us at i and utilize the StormTech Design Tool Note: Add 1.13 ft3 (0.032 m3) of storage for each additional inch (25 mm) of stone foundation. For more information on the StormTech SC-740 Chamber and other ADS products, please contact our Customer Service Representatives at 1-800-821-6710 DC W J 2 O m Z Z EE w uJ uJ (n Z LU C7 ZjZU) Z 111 1-- w > (ZW Jr W(n>W ZQoffn F W Q 2 W Z >ZU W U)0 (QD2<QZQ Z(n2 W ZFF 0ZOf< 0 Q J Of0 U) W Z Z d Q J D- Q of J F U w U) ' REVISIONS ' REV DATE COMMENT oRAwxer- 15 Know what's below. Call before you dig. ALWAYS CALL 811 It's fast. It's free. It's the law. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION DOCUMENT UNLESS INDICATED OTHERWISE. PROJECT NO.: V192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 10/7/2021 CAD I.D.: S1NP-0 PROJECT VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com ra.ALTH [ice R1'AN YAUGER Lic. No. 0402056625 10/07/2021 _� SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-908 ISOLATOR ROW TYPICAL DETAIL ORG. DATE - 10/7/2021