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Home My WebLink AboutWPO202100058 Plan - VSMP 2022-05-18REFERENCES AND CONTACTS ♦ALTA/NSPS LAND TITLE SURVEY: ENTITLED"RST DEVELOPMENT' PROVIDED BY: BOHLER 12824 WORLDGATE DRIVE SUITE 700 HERNDON, VA 20170 DATED: 08/05/19 DATUM VCS NAD8312011 SOUTH ZONE ELEVATIONS: ARE BASED ON NAVD88 DATUM DETERMINED BY GPS OBSERVATIONS JOB #SV1920796 *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 * 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 CONTRACTOR'S 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 WP0202100058 LOCATION OF SITE SEMINOLE TRAIL AND ASHWOOD BOULEVARD ALBEMARLE COUNTY, VIRGINIA CU TM P 46-108 AND TM P 46-109 �b ealord Hxs i Sz i row" wkc t Templeton goes eoav'O �,ee rie ihY E �, e m. oenn ,Sy¢'e 59 0etw°pL TimbervaW Pkwy r Rses In f Hollymeetl i Elemanary °'bh prye scn°ul ,," mn NnwpOa Ysoehe,lana Mmme schml 4n9�' 'YmwnnYe��d; ,f R f a� FACM ® 2W 1 Microsoft Cmpc2lion 0 2021 TomTom 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 UTILITY COMPUTATIONS C-505 OVERALL EROSION AND SEDIMENT CONTROL PHASE IA C-600 EROSION AND SEDIMENT CONTROL PLAN PHASE IA C-601 - C-604 OVERALL EROSION AND SEDIMENT CONTROL PHASE IB C-605 EROSION AND SEDIMENT CONTROL PLAN PHASE IB C-606 - C-609 OVERALL EROSION AND SEDIMENT CONTROL PHASE II C-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-909 TOTAL SHEET COUNT 33 J 0 m r, z EE W UU W U z W r7 Zjz(UU Z W H 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 d Q > a < of U W Fn REVISIONS REV i DATE I COMMENT 1 i 05/18/22 1 COUNTY COMMENTS I 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 05/18/2022 SHEET TITLE: COVER SHEET SHEET NUMBER: C-101 N N N T or 2 REVISION 1 - 05/18/22 GENERAL NOTES (Rev. 22021) A,. COUNTY OF ALBEMARL0E C DepartmentoFCommuni Development � _ Construction Record Drawings (As -built) for VSMP The following is a list of information required on construction record drawings for stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the construction record drawingbe prepared b someone other than the designer. Please do not P P Y g provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constructed location of all items associated with each facility, and the inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. 1 1. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - biofilter media, stone layers, sand layers, keyways and cares must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Bioli ter media must be an approved state mix. 13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. N F O z J z N 0 U n O Y 3 A G. N 0 0 > O 3 w 0 z 3 6 0 z X 9 9j 0 0 N W _m > T W . i 2 x 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 FORCONSTRUCTION. 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 WITH 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 O O 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 18.78ACRES. 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 (7 Z Of W W W to z w U Zjz(AU Z W w� > �zWw�J jw zr(9l=o�tn F W Q 2 W Z �><Ix-j to7 QQZQ zt42WzP:- Oof zQQa~O H a 0 Q J Cn U z O � Q �Z(naZ 5;a-J H U w H_ t7 REVISIONS REV i DATE I COMMENT =� 1 i 05/18/22 1 COUNTY COMMENTS I '----','� 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.: 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 05/18/2022 SHEET TITLE: GENERAL NOTES SHEET NUMBER: C-102 REVISION 1 - 05/18/22 STANDARD DRAWING LEGEND FOR ENTIRE PLAN SEI STANDARD ABBREVIATIONS w zz m 0 U 0 O 3 n 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 0 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 O CLEAN O 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 COMMENT cNECKEDer 1 05/18/22 COUNTY COMMENTS PCM • 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@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 05/18/2022 SHEET TITLE: GENERAL NOTES AND LEGEND SHEET NUMBER: C-103 REVISION 1 - 05/18/22 0 0 a a 0 0 U 0 ti 0 3 A 10 YEAR STORM COMPUTATIONS From Point To Point Drain. Area (acres) Runoff Coeff. C CA Inlet Time (min) Rainfall Intensity (in/hr) Q Invert Elev. Length (ft) Slope (%) Dia. (in) n Capacity (cfs) Velocity (fps) Flow Time Q/ QRill V/ Vfull Vfull Remarks rev4/05 Incr. Incr. (cis) Known Wail F (cfs) Upper (ft) Lower (ft) Incr. (min) F (min) A-100 A-90 0.31 0.85 0.26 0.26 5.00 6.62 1.72 - 1.72 484.06 483.37 138.32 0.50% 15 0.013 4.57 3.44 0.67 5.67 0.38 0.92 3.73 A-90 A-80 0.03 0.85 0.03 0.29 5.67 6.44 0.19 - 1.87 483.27 483.11 30.60 0.52% 15 0.013 4.68 3.53 0.14 5.81 0.40 0.92 3.82 A-80 A-70 0.09 0.80 0.07 0.59 1 5.81 6.41 0.45 1.13 6.03 483.01 482.23 156.22 1 0.50% 18 10.013 7.44 4.68 0.56 6.37 0.87 1.11 4.21 A-70 A-60 0.06 0.80 0.05 0.69 6.37 6.26 0.31 1.13 1 8.82 482.13 1 478.83 123.38 2.67% 18 0.013 17.23 9.75 1 0.21 6.58 0.51 1.00 9.75 A-60 A-50 - - - 2.59 6.73 6.16 - - 23.08 478.73 478.16 113.76 0.50% 30 0.013 29.11 6.55 0.29 7.02 0.79 1.10 5.93 A-50 A-40 0.07 0.90 0.06 2.71 7.02 6.09 0.37 1.32 26.18 478.06 475.80 118.03 1.91% 30 0.013 56.91 11.18 0.18 7.20 0.46 0.96 11.59 A-40 A-30 0.10 1 0.90 0.09 2.89 7.20 6.04 0.54 1.32 29.69 475.70 473.62 109.63 1.90% 30 0.013 56.65 11.54 0.16 7.36 0.52 1.00 11.54 A-30 A-20 0.03 0.90 0.03 3.86 7.36 6.00 0.18 - 35.39 473.12 472.74 70.78 0.54% 36 0.013 49.00 7.51 0.16 7.52 0.72 1.08 6.93 A-20 A-10 0.15 0.85 0.13 4.56 7.52 5.95 0.77 - 39.39 472.64 472.27 57.61 0.64% 36 1 0.013 53.60 8.22 0.12 7.64 0.73 1.08 7.58 A-10 UG-A - - - 4.56 7.64 5.92 - - 39.25 472.77 472.07 18.87 0 0.53 /0 36 0.013 48.69 7.66 0.04 7.68 0.87 7.17 6.89 A-24 A-23 0.11 0.88 0.10 0.10 5.00 6.62 0.66 - 0.66 477.73 477.35 75.72 0.50% 15 0.013 4.59 2.56 0.49 5.49 0.14 0.68 3.74 A-23 A-22 0.21 0.90 0.19 0.29 5.49 6.49 1.23 - 1.88 477.25 476.04 241.77 0 0.50h 75 0.073 4.58 3.52 7.14 6.63 0.47 0.94 3.73 A-22 A-21 0.31 0.90 0.28 0.57 6.63 6.19 1.73 - 3.53 475.94 475.35 115.80 0.51 % 15 0.013 4.62 4.12 0.47 7.10 0.76 1.09 3.77 A-21 A-20 - - - 0.57 7.10 6.07 - - 3.46 475.25 473.49 65.03 2.71 % 15 0.013 10.66 7.63 0.14 7.24 0.32 0.88 8.68 A-33 A-32 0.63 0.90 0.57 0.57 5.00 6.62 3.77 - 3.77 475.30 474.57 38.50 1.90% 15 0.013 8.92 6.86 0.09 5.09 0.42 0.94 7.27 A-32 A-31 - - - 0.57 5.09 6.60 - - 3.76 474.47 474.19 55.29 0.51 % 15 0.013 4.61 4.18 0.22 5.31 0.82 1.11 3.76 A-31 A-30 0.43 10.85 0.37 0.94 5.31 6.54 2.42 - 6.15 474.09 473.62 91.87 0.51 % 24 0.013 16.22 4.77 0.32 5.63 0.38 0.92 5.16 A-41 A-40 0.10 0.90 0.09 0.09 5.00 6.62 0.60 1.24 1.84 482.77 482.12 46.00 1.41% 15 0.013 7.70 5.04 0.15 5.15 0.24 0.80 6.27 A-51 A-50 0.07 0.90 0.06 0.06 1 5.00 6.62 0.40 1.24 1.64 483.05 1 481.00 46.00 4.46% 115 10.013 13.67 7.25 1 0.11 5.17 1 0.12 0.65 1 11.14 A-64.1 A-64 0.54 0.75 0.41 0.41 5.00 6.62 2.71 - 2.71 481.72 481.26 92.66 0.50% 15 0.013 4.56 3.84 0.40 5.40 0.59 1.03 3.72 A-64 A-63 0.20 0.88 0.18 0.59 5.40 6.51 1.17 1.31 5.15 481.16 480.40 153.00 0.50% 18 0.013 7.42 4.50 0.57 5.97 0.69 1.07 4.20 A-63 A-62 0.16 0.90 0.14 1.02 5.97 6.36 0.89 1.31 9.11 480.30 479.90 79.03 0.51 % 24 0.013 16.14 5.22 0.25 6.22 0.56 1.02 5.14 A-62 A-61 0.32 0.85 0.27 1.55 6.22 6.30 1.70 - 12.38 479.80 479.38 84.63 0.50% 24 0.013 15.98 5.62 0.25 6.47 0.77 1.10 5.09 A-61 A-60 0.41 0.85 0.35 1.90 16.47 6.23 2.18 - 14.46 479.28 478.83 90.29 0.50% 24 0.013 16.01 5.77 0.26 6.73 0.90 1.13 5.10 A-62.1 A-62 0.37 0.70 0.26 0.26 5.00 6.62 1.72 - 1 1.72 485.40 1 479.90 210.01 2.62% 15 1 0.013 10.48 6.12 1 0.57 5.57 1 0.16 0.72 8.54 A-63.1 A-63 0.45 0.65 0.29 0.29 5.00 6.62 1.92 - 1.92 483.00 480.40 58.00 4.48% 15 0.013 13.71 7.64 0.13 5.13 0.14 0.68 11.18 A-71 A-70 0.06 0.80 0.05 0.05 5.00 6.62 0.33 1.12 1.45 485.67 482.49 49.47 6.43% 15 0.013 16.42 8.23 0.10 5.10 0.09 0.62 13.38 A-81 A-80 0.30 0.75 0.23 0.23 5.00 6.62 1.52 1.12 2.64 485.61 483.37 54.00 4.15% 15 0.013 13.19 8.34 0.11 5.11 0.20 0.78 10.75 B-40 B-30 1.19 0.65 0.77 0.77 5.00 6.62 5.10 - 5.10 464.96 464.30 132.01 0.50% 18 0.013 7.45 4.52 0.49 5.49 0.68 1.07 4.21 B-30 B-20 1.09 0.85 0.93 1.70 5.49 6.49 6.04 - 11.04 464.20 1463.56 125.05 0.51 % 24 0.013 16.23 5.54 0.38 5.87 0.68 1.07 5.17 B-20 B-10 0.38 0.88 0.33 2.03 5.87 6.39 2.11 - 12.97 463.46 463.13 64.68 0.51 % 24 0.013 16.20 5.69 0.19 6.06 0.80 1.10 5.16 B-10 UG-B 0.35 0.88 0.31 2.34 6.06 6.34 1.97 - 14.84 463.03 463.00 4.14 0.72% 24 0.013 19.31 6.72 0.01 6.07 0.77 1 1.09 6.15 C-21 C-20 0.18 0.80 0.14 0.14 5.00 6.62 0.93 - 0.93 474.00 471.00 39.83 7.53% 15 0.013 17.78 7.17 0.09 5.09 0.05 0.50 14.49 C-20 C-10 0.73 0.65 0.47 1 0.61 5.09 6.60 3.10 - 4.02 470.80 465.30 88.34 6.23% 15 0.013 16.16 10.59 0.14 5.23 0.25 0.80 13.17 C-10 UG-C 0.04 0.88 0.04 1.68 5.56 6.47 0.26 - 10.87 463.72 463.61 22.21 0.50% 24 0.013 15.96 5.45 0.07 5.63 0.68 1.07 5.08 C-30 C-10 0.66 0.75 0.50 0.50 5.00 6.62 3.31 - 3.31 473.25 468.68 91.27 5.01 % 15 0.013 1 14.49 9.50 0.16 5.16 0.23 0.80 11.81 C-41 C-40 0.77 0.60 0.46 0.46 5.00 6.62 3.05 - 3.05 465.00 464.76 48.40 0.50% 15 0.013 4.56 3.94 0.20 5.20 0.67 1.06 3.72 C40 C-10 0.09 0.83 0.07 0.53 5.20 6.57 0.46 - 3.48 464.66 464.23 86.91 0.49% 15 0.013 4.56 4.06 0.36 5.56 0.76 1.09 3.71 D-21 D-20 0.41 0.80 0.33 0.33 5.00 6.62 2.18 - 2.18 467.00 465.70 27.13 4.79% 15 0.013 14.18 8.28 0.05 5.05 0.15 0.72 11.55 D-30 D-20 0.96 0.80 0.77 0.77 5.00 6.62 5.10 - 5.10 467.30 465.40 102.95 1.85% 15 0.013 8.80 7.40 0.23 5.23 0.58 1.03 7.17 D-20 D-10 - - - 1.10 5.23 6.56 - - 7.22 465.30 462.50 76.92 3.64% 18 0.013 20.10 10.26 0.12 5.35 0.36 0.90 11.37 D-10 UG-D 0.71 0.75 0.53 1.63 5.35 6.53 3.46 - 10.64 462.40 462.00 72.43 0.55% 24 0.013 16.86 5.61 0.22 5.57 0.63 1.05 5.37 UG-F EX-F1 - - - - - - - 18.73 18.73 459.50 458.22 35.65 3.59% 18 0.013 19.96 12.82 0.05 5.05 0.94 1.14 11.29 UG-G G-20 - - - - - - - 27.55 27.55 463.00 451.39 90.00 12.90% 24 0.013 81.47 23.39 0.06 5.06 0.34 0.90 25.93 G-20 G-10 - - - - - - - - 27.55 1 447.50 445.00 1 91.20 2.74% 1 24 1 0.013 1 37.56 12.% 0.12 5.18 0.73 1.08 1 11.95 r Use 0. 8d Condition at Outfall (80% Full) 10 YEAR HGL COMPUTATIONS Structure No. Outlet WSE Do (in) Qo Lo Sfo (0/U) Hf JUNCTION LOSS Final H Inlet WSE Top / Throat Elev. Inlet Shaping Pre -Cast Structure Junction Loss Reduction Remarks ev5/18 Vo I Ho I Qi Vi Qi • Vi ViA2/2g Hi Angle K Hd Ht 1.3 Ht 0.5 Ht A-100 484.39 15 1.72 138.32 0.07% 0.10 3.44 0.05 0.05 0.06 0.03 0.13 484.52 488.00 Yes Yes Yes A-90 48424 15 1.87 30.60 0.08% 0.03 3.53 0.05 1.72 3.44 5.92 0.18 0.06 105 0.70 0.13 0.24 - 0.12 0.15 484.39 489.57 Yes Yes Yes A-80 483.43 18 6.03 156.22 0.33% 0.51 4.68 0.09 2.64 8.34 22.02 1.08 0.38 17 0.12 0.13 0.60 - 0.30 0.81 484.24 489.38 Yes Yes Yes A-70 480.97 18 8.82 123.38 0.71% 1.16 9.75 0.37 6.03 4.68 2824 0.34 0.12 - - 0.00 0.49 - 0.24 1.40 482.37 489.24 Yes Yes Yes A-60 1480-161 30 23.08 113.76 0.32% 0.36 6.55 0.17 8.82 9.75 85.97 148 0.52 20 0.15 0.22 0.90 - 0.45 0.81 480.97 488.40 1 Yes Yes Yes A-50 478.10 30 26.18 118.03 0.41% 0.48 11.18 0.49 23.08 6.55 151.12 0.67 023 - - 0.00 0.72 - 0.36 0.84 478.94 486.66 Yes Yes Yes A40 476.89 30 29.69 109.63 0.52% 0.57 11.54 0.52 26.18 11.18 292.60 1.94 0.68 5 0.03 0.06 1.26 - 0.63 1.21 478.10 486.66 Yes Yes Yes A-30 475.56 36 35.39 70.78 028% 020 7.51 022 29.69 11.54 342.64 2.07 0.72 76 0.64 1.32 227 - 1.13 1.33 476.89 482.02 Yes Yes Yes A-20 474.89 36 39.39 57.61 0.35% 020 8.22 026 35.39 7.51 265.95 0.88 0.31 44 0.42 0.37 0.93 - 0.47 0.67 475.56 482.38 Yes Yes Yes A-10 474.47 36 39.25 18.87 0.35%D 0.07 7.66 0.23 39.39 8.22 323.76 1.05 0.37 16 0.11 0.12 0.71 - 0.36 0.42 474.89 481.80 Yes Yes Yes A-24 478.35 15 0.66 75.72 0.01% 0.01 2.56 0.03 0.03 0.03 0.02 0.02 478.37 482.45 Yes Yes Yes A-23 477.04 15 1.88 241.77 0.08% 021 3.52 0.05 0.66 2.56 1.69 0.10 0.04 10 0.07 0.01 0.09 0.12 0.06 0.27 477.31 483.34 Yes Yes Yes A-22 476.35 15 3.53 115.80 0.30% 0.35 4.12 0.07 1.88 3.52 6.63 0.19 0.07 23 0.20 0.04 0.17 0.22 0.11 0.46 476.81 485.67 Yes Yes Yes A-21 475.56 15 3.46 65.03 0.29% 0.19 7.63 023 3.53 4.12 14.55 026 0.09 36 0.34 0.09 0.41 - 0.20 0.39 475.95 483.27 Yes Yes Yes A-33 47758 15 3.77 38.50 0.34% 0.13 6.86 0.18 0.18 0-24 0.12 0.25 477.83 479.02 Yes Yes Yes A-32 477.10 15 3.76 55.29 0.34% 0.19 4.18 0.07 3.77 6.86 25.87 0.73 0.26 36 0.34 0.25 0.57 - 029 0.47 477.58 478.91 Yes Yes Yes A-31 476.89 24 6.15 91.87 0.07% 0.07 4.77 0.09 3.76 4.18 15.70 027 0.09 18 0.14 0.04 022 029 0.14 021 477.10 478.27 Yes Yes Yes A-41 483.12 15 1.84 46.00 0.08% 0.04 5.04 0.10 0.10 0.13 0.06 0.10 48322 486.66 Yes Yes Yes A-51 482.00 15 1.64 46.00 0.06% 1.05 725 0.20 0.20 0.27 0.13 1.18 483.18 486.66 Yes Yes Yes A-64.1 482.90 15 2.71 92.66 0.18% 0.16 3.84 0.06 0.06 0.07 0-04 0.20 483.10 484.67 Yes Yes Yes A-64 482.39 18 5.15 153.00 024% 0.37 4.50 0.08 2.71 3.84 10.40 023 0.08 26 023 0.05 0.21 0.28 0.14 0.51 482.90 486.35 Yes Yes Yes A-63 482.05 24 9.11 79.03 0.16% 0.13 522 0.11 5.15 4.50 23.19 0.32 0.11 96 0.70 022 0.44 - 022 0.35 482.39 486.79 Yes Yes Yes A-62 481.51 24 12.38 84.63 0.30% 025 5.62 0.12 9.11 5.22 47.54 0.42 0.15 90 0.70 0.30 0.57 - 028 0.54 482.05 485.97 Yes Yes Yes A-61 480.97 24 14.46 9029 0.41% 0.37 5.77 0.13 12.38 5.62 69.52 0.49 0.17 12 0.08 0.04 0.34 - 0-17 0.54 481.51 486.80 Yes Yes Yes A-62.1 482.05 15 1.72 210.01 0.07% 3.35 6.12 0.15 0.15 0.19 0.09 3.45 485.49 489.35 Yes Yes Yes A-63.1 482.39 15 1.92 58.00 0.09% 0.61 7.64 023 0.23 0.30 0.15 0.75 483.15 487.41 Yes Yes Yes A-71 483.49 15 1.45 49.47 0.05% 2.18 823 026 0.26 0.34 0.17 2.35 485.84 489.31 Yes Yes Yes A-81 484.37 15 2.64 54.00 0.17% 124 8.34 027 027 0.35 0.18 1.42 485.79 489.34 Yes Yes Yes B40 47123 18 5.10 132.01 024% 0.31 4.52 0.08 0.08 0.10 0.05 0.36 471.59 473.19 Yes Yes Yes B-30 470.78 24 11.04 125.05 024% 0.30 5.54 0.12 5.10 4.52 23.04 0.32 0.11 - - 0.00 0.23 0.30 0.15 0.45 471.23 473.64 Yes Yes Yes B-20 470.42 24 12.97 64.68 0.33% 021 5.69 0.13 11.04 5.54 61.13 0.48 0.17 - - 0.00 0.29 - 0.15 0.36 470.78 474.99 Yes Yes Yes B-10 47023 24 14.84 4.14 0.43% 0.02 6.72 0.18 12.97 5.69 73.85 0.50 0.18 - - 0.00 0.35 - 0.18 0.19 470.42 474.14 Yes Yes Yes C-21 472.00 15 0.93 39.83 0.02% 2.00 7.17 020 0.20 026 0.13 2.13 474.13 478.60 Yes Yes Yes C-20 466.30 15 4.02 88.34 0.39% 4.50 10.59 0.44 0.93 7.17 6.67 0.80 028 37 0.35 0.28 0.99 1.29 0.65 5.15 471.45 478.50 Yes Yes Yes C-10 46521 24 10.87 2221 023% 0.05 5.45 0.12 4.02 10.59 42.57 1.74 0.61 103 0.70 122 1.94 - 0.97 1.02 466.23 473.33 Yes Yes Yes C-30 469.68 15 3.31 9127 026% 3.57 9.50 0.35 0.35 0.46 023 3.80 473.48 475.71 Yes Yes Yes C-41 466.64 15 3.05 48.40 022% 0.11 3.94 0.06 0.06 0.08 0.04 0.15 466.79 468.67 Yes Yes Yes C-40 46623 15 3.48 86.91 029% 025 4.06 0.06 3.05 3.94 1202. 024 0.08 89 0.69 0.17 0.32 - 0.16 0.41 466.64 468.65 Yes Yes Yes D-21 466.90 15 2.18 27.13 0.11% 0.10 8.28 0.27 0.27 0.35 0.17 0.27 467.17 470.94 Yes Yes Yes D-30 466.90 15 5.10 102.95 0.62% 0.64 7.40 021 0.21 0.28 0.14 0.78 467.68 474.81 Yes Yes Yes D-20 465.89 18 722 76.92 0.47% 0.36 1026 0.41 5.10 7.40 37.74 0.85 0.30 90 0.70 0.60 1.30 - 0.65 1.01 466.90 473.05 Yes Yes Yes D-10 465.03 24 10.64 72.43 022% 0.16 5.61 0.12 722 1026 74.06 1.64 0.57 26 023 0.38 1.07 1.40 0.70 0.86 465.89 470.91 Yes Yes Yes UG-F 459.42 18 18.73 35.65 3.18% 1.13 12.82 0.64 0.64 - 0.32 1.45 460.87 469.00 Yes Yes Yes UG-G 452.99 24 27.55 90.00 1.48% 10.01 23.39 2.13 2.13 - 1.06 11.07 464.06 470.00 Yes Yes Yes G-20 446.60 24 27.55 9120 1.48% 1.35 12.96 0.65 27.55 23.39 644.44 8.50 2.98 8 0.05 0.45 4.08 - 2.04 3.39 449.99 455.50 Yes Yes Yes 2 YEAR INLET COMPUTATIONS Inlet DA C I Q Qb Qt S Sx n T W Sw On Grade Inlets Only Sag Inlets Only Remarks No. Type Length (ft) Drain Area (acres) Runoff Coeff- icient Inten -city, (in/hr) Incr. Flow (cfs) Carry over Flow (cfs) Accum. Flow (cfs) Gutter Slope (%) Pvmt Cross Slope (°/,) Spread On Grade (ft) Gutter Width (ft) W I T Gutter Cross Slope (%) Sw / Sx Eo (App. 9C-8) a (in) S'w = a / (12W) (%) Se=Sx + S'w (Eo) (°/,) Lt,Comp. Length (9C-17) (ft) L,Spec -ified Length (ft) L / Lt E Qi Qb Down Stream Stir. Qi d h (R) d / h Ts rev5/18 Eff. (9C-18) InPx Flow (cfs) Byp. Flow (cfs) InPx Flow (cfs) Depth (R) Spread In Sag (ft) A-31 Curb DI-3C 6.00 0.43 0.85 5.02 1.83 0.00 1.83 2.00 0.02 0.00 2.00 8.33 13.52 0.00 0.00 0.00 1.83 0.19 0.46 0.42 3.19 In Sag A-64.1 Curb DI-313 6.00 0.54 0.75 5.02 2.03 0.00 2.03 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 2.03 0.20 0.46 0.44 3.87 In Sag A-64 Curb DI-3C 6.00 0.20 0.88 5.02 0.88 0.00 0.88 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 0.88 0.12 0.46 0.26 1.40 In Sag A-63.1 Curb DI-3C 6.00 0.45 0.65 5.02 1.47 0.00 1.47 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 1.47 0.16 0.46 0.36 1.97 In Sag A-63 Curb DI-3C 6.00 0.16 0.90 5.02 0.72 0.00 0.72 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 0.72 0.10 0.46 0.22 1.23 In Sag A-62 Curb DI-3C 6.00 0.32 0.85 5.02 1.37 0.00 1.37 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 1.37 0.16 0.46 0.34 1.88 In Sag A-61 Curb DI-3C 6.00 0.41 0.85 5.02 1.75 0.00 1.75 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 1.75 0.18 0.46 0.40 2.89 In Sag B-30 Curb DI-3C 8.00 1.09 0.85 5.02 4.65 0.14 4.79 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 4.79 0.32 0.46 0.69 9.58 In Sag B-20 Curb DI-313 6.00 0.38 0.88 5.02 1.68 0.00 1.68 1.00 2.00 0.02 7.14 2.00 0.28 8.33 4.17 0.74 3.52 14.66 12.90 7.95 6.00 0.75 0.92 1-54 0.14 B-30 0-00 0.00 0.00 0.00 0.00 On Grade B-10 Curb DI-3B 6.00 0.35 0.88 5.02 1.55 0.00 1.55 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 1.55 0.17 0.46 0.37 2.16 In Sag C-41 Curb DI-3B 8.00 0.77 0.60 5.02 2.32 0.00 2.32 4.50 2.00 0.02 5.57 2.00 0.36 8.33 4.17 0.85 3.52 14.66 14.49 13.35 8.00 0.60 0.81 1.87 0-45 0-00 0.00 0.00 0-00 0.00 0.00 On Grade C-40 Curb DI-3B 6.00 0.09 0.83 5.02 0.37 0.04 0.41 4.50 2.00 0.02 1.57 2.00 128 8.33 4.17 1.00 3.52 14.66 16.66 5.96 6.00 1.01 1.00 0.41 0-00 0-00 0.00 0.00 0-00 0.00 0.00 On Grade C-30 Curb DI-3B 6.00 0.66 0.75 5.02 2.48 0.00 2.48 2.00 0.02 0.00 2.00 8.33 3.52 0-00 0-00 0-00 2-48 023 0-46 0.51 5-32 In Sag C-21 Curb DI-3B 6.00 0.18 0.80 5.02 0.72 0.00 0.72 3.00 2.00 0.02 2.35 2.00 0.85 8.33 4.17 1.00 3.52 14.66 16.65 6.66 6.00 0-90 0.98 0.71 0.01 C-10 0.00 0.00 0-00 0.00 0.00 On Grade C-20 Curb DI-313 8.00 0.73 0.65 5.02 2.38 0.00 2.38 3.50 2.00 0.02 6.11 2.00 0.33 8.33 4.17 0.81 3.52 14.66 13.93 12.81 8.00 0-621 0.83 1 1.97 0.41 C-10 0.01) 0.00 0.00 0-001 0-00 On Grade C-10 Curb DI-313 6.00 0.04 0.88 5.02 0.18 0.42 1 0.60 6.00 2.00 0.02 1.70 2.00 1.17 8.33 4.17 1.00 3.52 14.66 16.66 7.56 6.00 0-791 0.94 0.56 0.04 C40 0-00 0.00 0.00 0-001 0.00 On Grade NOTES 1. SEE SHEET C-903 FOR EXISTING STORM COMPUTATIONS. (D Z EE W W UJ rn Z W O ZDZWO Z W H rn W> Ur z W W W j W z�CO~�WW F W Q 2 W Z _J>Z0UJW0 U)? 2 Q Q Z Q zc42UJzFl- of �zQQa~O z J 0 0 Z) W Z z aQ > a < of U W I- V5 REVISIONS REV I DATE I COMMENT 1 105/18/22 1 COUNTY COMMENTS I • 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: 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 BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 05/18/2022 SHEET TITLE: UTILITY COMPUTATIONS SHEET NUMBER: C-505 REVISION 1 - 05/18/22 G. 0 0 0 3 A 0 3 W 0 3 N 0 Z m 9j^ N W m > T W N - i x % , ' ,: / !' I_ % ", \F,-________, /' PHASE ►A SEQUENCE OF CONSTRUCTION m U-1 U) ., Y 1 j j ' ; ''`\ \ ` / / " \ \ `\ `\ 1. OBTAIN ALL REQUIRED PERMITS. Z W ' :\ \ `, ' ' / \` \ I `I 2. ATTEND PRE -CONSTRUCTION MEETING. U Z j Z OJ U LU 10 c ' / �' , �' �' - �'1, � � - `\ \ `I `,_ 3. CONTRACTOR SHALL CONTACT JURISDICTION AT LEAST 1 WEEK PRIOR TO COMMENCING CONSTRUCTION. W (0 m U - U of W ¢ ' / AI /%/'�'/,i ` ` \ -� `\` \ \ I, 4. CONTRACTOR SHALL STAKE AND FLAG LIMITS OF DISTURBANCE. U Z W H LULI 5 =< ,� I i %' i r� \ \, _ `-- \ \ % 1 5. CONTRACTOR TO USE THE EXISTING ENTRANCE ON SITE AS CONSTRUCTION ENTRANCES PRIOR TO Z (J p Q_' g `. _ ��/ W Q 2 W Z /' \` - - -,-, �,UI` \` - `-- --- �; ` ' ( GRADING AND INSTALLING THE PROPOSED CONSTRUCTION ENTRANCE ALONG ASHWOOD BLVD. J % Z U J U _O 1q`\\ \` ` \>;�\``, \\ '\ l' - , - 'i ; 1 % 6. DEMO ALL FEATURES NEEDED TO INSTALL ALL PERIMETER CONTROLS. (n p 2 Q m U ~ \ `� \�```,` \` \\ \ \ `,`;,; " `,\ "- I 7. PERFORM GRADING SHOWN IN PHASE IA TO INSTALL THE CONSTRUCTION ENTRANCES PRIOR TO THE - mmi 0 Q a Q F Of p s \� `- ` ?`. ` ` ` ` \ \ ` -`- \ _ � - % I START OF ANY MASS EARTH MOVING ACTIVITIES. U Z It U ~ d - u \ `yam {\ \\ `� \`�`\ `\J\y\ ``\ \•�`, \\ \ 1 8. CONTRACTOR TO GRADE AND INSTALL ALL SEDIMENT TRAPS AND SEDIMENT BASINS AS SHOWN IN PHASE IA Z J (n U) Of (n a'0 ` I ` `\`\ `\\`\\\\v`` `\ \ `, \\\ _ \ - OF THE EROSION AND SEDIMENT CONTROL PLAN. a 0_' Z U (L Q a \0}1'X\ \ `\ `\ `\`\ \`�`� `,` `\ \ \` - ;\____ \ '' ' ' f 9. CONTRACTOR TO PROVIDE TEMPORARY SEEDING AND DUST CONTROL OF ALL DISTURBED AREAS AS d J of = c \\ •`, , \ \`\ `,\\ ,\ `, , ` _----__ `\ / NEEDED. ou rm% ,\ `, \\ �\\ \\,\`, \\ \ \ I------- / NOTE: F o. '\ \`,\`,\` \`- --- - \``,,, \ \\ \\ -___ - - „ ' , , • INITIAL DISTURBANCE SHALL BE LIMITED TO ONLY THE DISTRUBANCE NECCESSARY TO INSTALL INITIAL (7 i s ,`\v \ `\;\\\\69 ` \\ :`,` \ - \,,� (^ /' /' PERIMETER CONTROL AND MEASURES. \\ \`wo \ \` \ ` `, `�;- `;_\ `\ \ - / / • CONTRACTOR SHALL NOT COMMENCE PHASE IB OF THE EROSION AND SEDIMENT CONTROL PLAN PRIOR TO THE COUNTY EROSION AND SEDIMENT CONTROL INSPECTORS APPROVAL AND COMPLETION OF ALL PHASE IA91 _ -,� ,\�\\�, `•\ `�?\ _� -�. `\, `` \,`\ ,` \\` -, / I' CONSTRUCTION. 2 'v \\ I I __1 00 T Q,\\ ;� \ \ \ I U__ I - I' REVISIONS ;�``, , \` ;\ \ , \ wod4 Ra�ER�x /NlYES,TtG1ETSzLL� \\} % \' \�`. `,\'\\`\�'\`\' " I\ ` \ `\ `\\ `\ �, 978`,PG 390 I; ;/ Dmw 77 REV DATE COMMENT CHECK il \ \ ` \ ` \ \` `, \ \\ \ \I, ``, \ I,\ aoN) \ \;�r,,�RESl / If�4LJi ; i , 1 05/18/22 COUNTY COMMENTS PC \�; ` \I\ \ \, \ ,F.\, SNG�E` FAMILY RES'/b NT%AL I, \ ,,,\ \ \ \ , \ , \\ \\ \ \\ `\ - ` \ \\\ , \ \ `\ `\ \ , �// \yam / / `,,,'`, ; I , `\ \ II \ ,\ '\ `, ,, `\ \ ` I `\ I `\ \ I I 1 , 1 , \ I , , I , `\ / , I \ , I 11 ' ', / , i I % , , i ' I 1 % % I � `I \I `. \\ ' % '` 11 1 ' 11 `T, `, \ ,;'; lI \I\ ' I' ' l ' % �\ j,� \, `, 11, I II I II `` `I I I ' I `, ' _ 1 ; ' % / ' ;' ; / 1 `\/ `, \ `I, ``I I`I\ 1'; ) 1 ; 11 'i "I1, '`I, '`I �'' < - I, I' W I , I I I / l LP- IL,482.95 ``I \ \ , , I -1 1 I I 1 1 i% i I^�p,.�/ I I II H I I ,I I I` 1 I I I I 1 '\ `I / O `. / --- N" \\;,\\\\ ,, \ I `'`` JOIy ---_ _ __ ; ' / ' I ' 1' I(y,� ' '2\; 1 1 _ - \ \` , 1 ,` I, 1, ; 11 I 1, 1, , , / I ,Yj ' "", / t^ \\vim / \ ` - � o ` 1 I. 1 , / / /. 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OVE 040,- 1 1 ' I I ------- I 1 1 ' -- - _ , , \,co d�v,�REA `11 �� ,, ; ' LOT 17� I'll�� 11%; _ sett_ j \ LOC8 ✓-;�6�fdVQOQ , h, Z__ b10N ARC-- ___ - -- — \ FOREST LAKES`�OU \ \BLOCK ✓-TEALC6YOO- PHASE 2 1 N-It-5'-- \ `\ \ \ ------ F7_MRE I( __ ES SOUTH S SOUTH -- r I , I' \\ L2 B'`J,6 2 ; ✓�8 3 \ D.B'-d842�PG. 38- ` °' % 1' V. 558 !I. % \`. `.`, `\ '` £J/66.. ' (/D PLANNED UN�`D€f/E4'Oy ' Nr�1 \ \``�N/NG• PUD (PLANNED UN Nl/ELOPf1EN /11 UNIT DEVELnPMENT / J \,,'\ ��E. \SYN- PA�12 X RESIOE�WTI�L ` `r Ldr �B _ USE S/NGLE ��tMJ1 Y RES/ /AL ;' i RES/DENT/AL J / ; I \\I\`\` \` ^ BZ��X(1v-A/�fYObD PHA z2---= - I ,� `\ \ \ \ ; \ F�?E5T1KBS SOUTH _ / , / )/ II \ `. \``� 1 I i I \ \ KP.9.. `J642 f : 38,3 - _. \ VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL E SAFETY FENCE SAF E TEMPORARY STONE CONSTRUCTION ENTRANCE /�[ l/C 3.05 SILT FENCE SF X X RM DRAIN El INLET PROTECTION I I E CULVERT INLET PROTECTION CIP TEMPORARY DIVERSION DIKE DD 3.09 _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 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 E3.13 TEMPORARY SEDIMENT TRAP ST 113OHLER// 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 D� 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 .p Lic. No. 0402056625 1A �,_ 05/18/2022 ' SHEET TITLE: OVERALL EROSION AND SEDIMENT CONTROL PHASE IA SHEET NUMBER C-600 111111111111111 REVISION 1 - 05/18/22 O 0 m ti 5 0 3 A , k, /' i .♦` ------� ' / ''-'% SLJ1P�fiiSEMEN7, ' /-\ \ S E INSET SHEET v`.1NSET,SHEET '60440, .. ------ \ / \ I C-614 `,♦ `.1 '/ � , ., ,� \ - ova �` --------- - \ \ - _ %AAQ �.70!72Jp: �0 \ .0,` 9 PG4.J i 7T. ♦ IR 10 SF I I /O ...`. , ,. R� f � Y�� goPp �,i�`\, ` ♦` ,1 UO�IG / / TEAY,?ORARY G17d'S'IRUCIION \ `. \ `` ` \ \ ` `` \ '1 `-- -------- \ 1`�♦�,` , , / `. �JIOJEp P---'" ENTRSEMfNT �'\ \ `♦ `,\ ``, ``, \ `♦``,✓`\ `, \ `,♦ \'`, �`,` .-- -``\ \ I' 1 E� E 1 pP E \ \ c. 4 i / j D� B9 \ ------------- ► /, /' /' -' / '/ ` /O'\/�i%' /'' �� /' /' ROP. WET STORAGE\ ♦ `♦ ♦\ `` I \` \ \ `� ` \ -' -- ELEVATION: 477 ` `♦ ``, ,` \ \\♦` ` \` `♦♦` - -- i III qI L / / / TSdo ♦ 1 SF vf \ J Dc 7;)QCtyOOq 80E�L� �NFANOii LP. \ \ '^ ' o,b EL�E293/, \ \ \ \ � \P'\08`4` 6`0o-00,00�1`b8Z\B0`6 9S.F\OR3.�43t9C.♦FM\) � I2�r`8.943A Rl / �,` _ A p _STD�,/ O- OQN,P/MLC�:• N NREESB\/p "000000,\EEN \N0\\ 10 106 .3 01 Of ' - 6OOT00=00-D2T8A A TM� 0' ------ S/NE\FAMY RCS/DE DID A/ ' ------ IL dr / is / —:a%-- \ \ / �— 6'- / \ _-_- \ \ ` ` ` `, \ `♦ 49TP / \ \ \ \ -?,DC 1 \ \ ,✓ `` `, `� `, ` `I \ ``♦ `I `,\♦ ` ` \ --------------- {' /� 'I \\ \_ / ' ' /�` ` 1` 1` ,` I ' 1 1 ,` 1 1 , 1 ` `♦ SOON / r ('/ Ilk DO \ 1 1 1 ♦ ♦ , 1 1 1 , , TP TS yl�, �yI \ \ 1 I i I 1 \\ V \ V/ // `I 1 \ ♦` ♦` ,' , , , ,' , , 1 `I SF F I I $ \ Y - !g••N \ 6 /� S 1 \ \ ! I i 1 i \ \`— I ,1 11 i I i `` , `` I • `` `` `` ` I SF I 'i i i i SF X • I ' i ' � / i' j ' , i'fl � ! I •�. 1 // /i� , �' I �� I I I, ; 1 DO I 1 I 1 1 I I 1 1 , , / ' �oY'� ' � ` // S�. - ARE-0.87 AG C-0.60 o E `I 400 LF. SF ENCAV4011MENT ` '1 '`♦ l APPROX. L -EMErERY PROPERTY `\ /' �r 215 L.F. SF/ 0.25 AC, i OF N£P EASEMENT D.Li 527)00. 177 \ :\ --� L ^ -'-' ;' '' / , DID ' ` a 00 / !,a d( ��` OB 466 G 491 (TBuJ D.B. ZT,7 PG'.'�7Q2 (TBYJ � I ♦ I � r _ ♦ o pC ' / 1 ' \` oy` f' i / •' 1, ( /' ' (' ( ( i LP - TC 482.95 TS / -_- moo, o, i' / l , 1 / /`,� 1' I I,♦ 1`` ♦ I j / II ,�, � PROP. WET STORA ELEVATION: 464.5 1 1 1 1 1 TRESS EASLMEN7 �� \ / / \ (FO) 0029-002`7\ l ' I \ °\f / / /' r DC it I / SF \ ``♦ ```♦\\`♦\``♦`` \ \I ``\` `,tyy1 TP TW — 475.00 F / V B '40, ST_ 2 / ��. DD ♦♦ r/� \ - W, ° /� ty / Ea CULIERT Ri < \ ------- — — -- ./T i ' i i' J Q -- A �� \ i� / - _ ---- _- TP TP / , EC OF/10' IVEPCO EASEMENT T' t __� ---- O.B. /'466 PG: 494 (TBIVJ / \' 1�'` _____�\\ \\\ ♦` 1`` y ` ` ```\`` ` ��\ _ " y" •�/r- / _ -GRATE \ - - \ - -- --- " - G -' 1#4fT (rear- / \ o\\ 496 .✓f /. ,,/I' O RSA AWAY / i[MATCHLINE - SHEET C-602 �,,I —1 ILVrRr�RMATCHLINE - SHEET C-6-03r�l VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL E SAFETY FENCE SAF ® I 1'�-==-1F 20�p='�j CONSTRUCTION ENTEMPORARYSTONE j��ir l ESILT 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 S I 3.14 TEMPORARY SEDIMENT BASIN SB 3.18 OUTLET PROTECTION Or 3.31 TEMPORARYSEEDING 3.38TREE AND PRO ECTIONION Tp TP 3.39 DUST CONTROL DC` p� 30 15 7.5 0 30 1 "= 30' LUZ_ N LL W W W Z W�WF U)W zW0ZQ=�w miZ)wQ< �U)maQmzC 00<< F- Z JU' ZU., D_ 0 0, Z) xJ D_�d J O U W 00 1 REVISIONS REV DATE COMMENT 1 1 05/18/22 1 COUNTY COMMENTS 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 TH OF` Z V N YA R y .p Lic. No. 0402056625 ��A 05/18/2022 ``1�t4 �`S'S/ONAI. ECG SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE IA SHEET NUMBER: C-601 REVISION 1 - 05/18/22 I I I I I I I I I I I `I IN 0 / a 9 U 5 O 3 A 11 ly' � II I 80 , \\ RIP'p;A65' I \ \IN IN 00. \ \ \ TP I IN kill \ \ \ o I , \ , I , 1 'RIM, J \\ \ \ \I ✓1W1I IH 11 I I rI\ 25 LF.-18" CLEAN WATER P MATC H LINE - SHEET_ _ C-6_01 \\ TP TP 0 SF T ax------------ \-' \ \ /r\\\\ ` \ DC ref \; \ TS ' / CWP - - ---- _ LOC - \ 11 LC OF EASEMENT ----- - / / 466 Pv. 499,(jBV, APPA9,,k LOG. l C- 0.60 % f OF 10'_V€PCO EASEMENT / �'�/ -` ' �',� DC D.B. 466 PG. 494/ SF - --------------- _ � OE-JB' "VEPCO EASEM€NT -' -------------''-9,466 --(TRV'��' '� iii E I� J � 1 AREA = .7 A IN- -------- . ---- / t - -- ------------ L_-- PROX. LOG PROP. ELEVATION: '"/�r� / //`'� _ _� i-ma)� , OgyLE ST 3B ELEVATION: 473 Tr'/ , _ _PROP. wet STORAGE o "]�1NI,q', PCO ESMT / _ DC o R ELEVATION:474 1 RK(.7> - 494 I i it/ AKEA I T3 I 1 IF ICIP' W� I I �i4 �7 T W -3 -- °MR ��9CIP R) 1 HAZARDOUS I I k\ A 1 ' DC / \ MATERIALS I - STORAGE - AREA - U.23 AU. O/. [APPROW LOG. IP C= 0.60 _ ? OF 10' V£PCD EASE/j/ENT l LU `. yy� D.B. 466 PG. 494 MVJ ETERGENfiS,SOL ENT FILLARE#TOENSURE I \'` F4 1 A AND WASTE WATER OF DRAINAdE TO ST-3A I V I / � I � �. - \ Z CONSTRU TIO EAAME TI ES L < ` IP IN FFN,CC / VEHICLE FUELING AREA J a I AND SPILL CONTAINMENTQr GO' _ // II 1'1 � 11 I /' � � STAGING AREA, RAIN 1 O I i jdd �� / 'r ° \ A , 1 1 1 GAUGE, &PORTABLE I� �¢ I I I r E$y� I R 1 T LET 1 ,, , , 1 I 0 S 5 I I -------- II �-� (/y APPROX. OF 10' VfTeO EASE. _ ----- ---s==�uiVRRi D.B. 466,P0. 494 IN, It - ---- _- DC TS I I r ' PRNA7E ROADWAY CB<—` \\\ // ASPliAl7 PAYED — — f, , LRAEFIC Na'n It ! / It it It 460 It ------------------------------- ----------------------------- IN < \ \ 1 I I O \ --PROP. WET STORAGE -- ELEVATION:467 ST 4---------------- I I \ \ DC IN I I F 0 'E \DB. 4P 4 C= 0.60 / / \\ 11\ 0�•,� TS \ 1 \ PEO / 1 / 1 ,�I J /^1° ,- CWP lei, 11 roc., I /X ,fir/ 1 28, \ ; err/ C= 0.60 LF. - 12" ' ttEAVAAW PI "DDL� liIN . DD TP ---- 7__771_ -1 -------j - 4,EHL4ND _COMAOM-AREA------------- — — — EX 20:SAN ES,{1T EX. B" SANITARY EX M// APPROX LOCATION PER AS -BUILT PROVIDED BY.- ROUDABUSH, GALE & ASSOC, INC TITLED- %HAND TOWNHOUSES AS BUILT WATER LINE AND SANITARY SEWER' DATED 1012911994 REVISED 0110911995 AS-11 MI! = 472,50 IN = 46.T 81 OUT = 46971 EX. A5-10 4f RIM = 46709 VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E mTEMPORARYSTONE re: r�i%ii CONSTRUCTION ��m�i�i�i �W12 3.05 SILT FENCE Sr E WLOET PROTECTION IP 3.08 CULVERT INLET PROTECTION CIP 3.09 TEMPORARY DIVERSION DIKE 3.13 TEMPORARY SEDIMENT TRAP S I 3.14 TEMPORARY SEDIMENT BASIN SB 3.18 OUTLET PROTECTION OP 3.31 TEMPORARY SEEDING TJ TS 3.38 AND PROTECTIONION t TP E DUST CONTROL 30 15 7.5 0 30 1 "= 30' LU z E UJ W W Z F� WzWWU)� W z W Q 2 0 W � Of Q < m C (n mi :7 1)Q , O Z Q F Z J�0U) D Uld J d Z a- J O U W h REVISIONS REV DATE COMMENT 1 1 05/18/22 COUNTY COMMENTS 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: MEGIF 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 _ WHA H eI- F;M%N YAIJ ER Lic. No. 0402056625 1 05/18/2022 _J SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE IA SHEET NUMBER C-602 REVISION 1 - 05/18/22 a 9 U 5 0 3 A MATCH L I N E- SHEET C-601 Ifr�' OF/10' I�EPCO TO EASEMENT ox SF \\ / I D.B. PG 494(TBVJ ,.r' 'R _ L%(%RRJ`\ GG Ay SF ,rp ------ PROX. COG: f OF 10' WPM EASEMENT, / C \ I D.B. 466 494 (TBVJ \ I - 0 EASEMENT /' G / -----V ' / 1 i �--------- -- ,G E� 'N , -- •' G�VERi / / \ \ \ APPROX. COG: \\ OF 10' 4EPC0 EASEMENT 0.9 466-PG: 494 (TB1J ' IM'/wra ,E` 10' WPCO EASEMCN7 I ()Q `.� N rEL ,� ,f% � � 466-PG.--494, 1p 1 ' / -G \\ ----- \\\ / _ U i F i' flCi£R�(7171 \\1 �EX. `\I 1 = R1 \ � n / q R) ,,i �l,- 11rnA?FiGsrcRNJ� \ \ _ C= 0.60 COIL --- 245 LF. SF IV v WA ----------------- Rio -�-------- ----- '\ �'" ,\\ �" "eR) 104 LF. SF 10.25 AC j G�II� 1` GV " RryA(E ROAD \\ /\ RIv PAv � \ 1 l\\ I 1 JI LPRL?X ZOO. It1 \ J ? OF 10' NERCO = O.B. 466 PG 494 (PY l APPRO,f , COG '� IF OF 10' (�RJ U VER�' I 700 CiISEMENT�\, .� ©(�G��IV %� D.B. 494 PG: 'S40 l7 '/— \ -- TO , 1 1 1, 1 \ \`I •� LANDS NIF \ \ PETL',� A. ZO�Q/S iN,9 &ERA*1A ZO&Y I D.R. 690 P6'\,507 TMf L)) 600-'00-M-028A0 \ \ ZON/(l/G R, (RESIQENT/ALf \ ShyGL`r FAIL)' RgIDENT/AL \ SF '1 1 , ------------ Yv , I , I , _ I I n ' 1 S TP ----- APPRO--' % --- --- X. COG: 1 �� OF_ 10'IPLO EASEMENT PG. 540 (TBVJ / I - -_ LANDS N/F --- ------- , A. AREA_ 6.30 C. C= 0.60 -----aPPROX Loc \ } —/ �T 10' 4£PCO EASEMENT ,,� , \.�x' /� CCC ,;';' / / ; OB. 466 PG APPROX. COG: l OF 10' 1'E�0 EASEMENT PROP. TEMPORARY 11, O.B. 466/0G 49&VJ � I' T ' / / p� �� 1 S_TOCKPILE'�____x `I � ` 11 \``\ PED. (TBR) \ / � l ��/ ��. �/'I '` `` TILE PARCEL'ONEAR� 1\ =1 `\ i • I I (, / '1, ,' l l I /'' / `, \ j / `\ / 11 I TS O10 L LA10S 0 f O� EASEMENT HP,' ARK LP ``. / `y \'� E . (I _ `\ 1 ')M 494 Pc. 540 (TBVJ LACES BREEDEN BR/CKHEAD �W ; Y/LLARD-HQ8ARD BRICI(HEAQ FAM/L Y 7*6(5T, ET AL W.B. 128',PO 719 W..• 04600-OQ-00-028✓Q j ZONING.- R1 (iI'ESIOENT/AL) `TP SINGLE FANNY RES/DEN{r/AL ; , I I I I I , 1 , APPfiar LOG: f OF 10' I0000 0SEM4VT O.B. 494 PG. 540 (TBVJ 1 ; I I 1 ' I 1 , / , 1 1 W W W C.T0 0° II, 0) N p 1 4° iT1 m I \ I 1 f DA 1883 PG 298 \ �� _ \ \ 1 `` TMPc 04600-00 OU-10900 \ / Y� \r/ yC x I \ `\ y A A: 67¢ 929 S.F, 6R 15.540 AC (M) - \\ --A E I O \\ A 1 AREA: 15.08 AC. (R) (T ` \ 11'/ORJIX -A R� 1CJ:b `1;.\ \ '�LL(;�p,LL(, LLG-,��•,i.Ll, ROO. 36" RISER WITH PROP. 130' BAFFLE �'�, '�,1 / \ 54" TRASH RACK F0 (7 I a ' APPROX.'I COG: \a PROP. TEMPORARY 21" 540 �'TBVJ I >� I 1 \ F CMP @ 2.5% INV. 447 B- 11 I .I� I D `\ l DC PED. (TBR) \APPRO,Y. ZOO.. 0.ROF 10' 494 PG.PC5�0 SENT , , ,, \ GONER (TBRJ \\ 1 SF 11 PROP, TEMPI)RARY`Z1" , APPROX DD I '\ \ 1 1 11 DD \ I \ ', C1hP@2.j% 1 \ ' DB 410' EASE E p `\ DD 1 _ 1) `\ , ` , ` ' ROP. ERGENCY \ , .. 9 X. % ' I �r'i /rrr/ �4 \ ____ ^r» \,\ 1"IRONAff-FOUND'`' / INV.446 6PILLWAY i� / —�' V 0.5'ABOW 6RAOE �� Y SF TP S65054'00"W 1025.97' (R) 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 IP 3.08 CULVERT INLET PROTECTION Clp 3.09 TEMPORARY DIVERSION DIKE 3.13 TEMPORARY SEDIMENT TRAP S I 3.14 TEMPORARY SEDIMENT BASIN SD LU Z EE W W LU W W Z I_ z�LLI Wit U)� F W Q E ow W �Z,Q<Wm,D ij rn U) 00<a- ZJU' 0U)LU J d Z iL J O U W H REVISIONS REV DATE COMMENT 1 1 05/18/22 COUNTY COMMENTS 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 3.18 OUTLET PROTECTION Op 0 LER// �+ 9100 ARBORETUM PKWY, SUITE 360 E TEMPORARY SEEDING TS RICHMOND, VIRGINIA23236 Phone: (804)893-8200 3.38TREE AND PRO ECTIONION Tp TP H DUST CONTROL 30 15 7.5 0 30 1 "= 30' VA@BohlerEng.com F;M%N YAUZ•iER Lic. No. 0402056625 1 05/18/2022 -J SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE IA SHEET NUMBER C-603 REVISION 1 - 05/18/22 1 1 � ' 1 I, ' � I ' ' I I ' ' I 1 J , ' I 1 /I ' I ' I _ _ _ _ _ , 1 1 I I � / I � ' ' 1 ' I I � I I � I I � I 1 I I , \ ' 1 I \ ; I I /\ I I 1 I 1 / \ / / r o/I I 9 I / B /NCET R/M=47/87 /NV A=1467.90 ' INV 9=467.22 / g3 tr7L/Y/1/VLE J /Tfil� fJ, a7� /i / �� L •7 \ \ - `-- --- CURB Y,N(ET `� �- - �� ' ------ R/M=4p4 /3 \ BAR/ABLE INIOTH R/GHT-OF-WAY NIN__ --- /NV A=469.26 ASPHALT PAVED PUBLIC ROADWAY \ '----------- __________________ CU INV 9=46923 --- ------------- IP _ - - - - - - - - - - - - - - - - -__- ___ __ - t __ a 478- —np1nm _ _ OOI�� - -0� - - mil- ��--�--�1--�,�— 2659-A00 �'� —LO TS �� ----- 2651{�LOBLOD \ ��EOp•�---------- _ — — )�L00I91 LOD j'1, -- -- -- 10 CORE WMt- 477 /' I - ZI ¢I' - --48B.35----------- /NV g4T.�51,% ,- ---:,rn ", /i14/=_47C0�--------------------- --- - ----- \ - ------------------------------------------------- ------------- - 1` ,I , <_ ------------------------------------------------------------------- �rNLE3-------- --/I ------------__ ----_--_-1 T4_________________________________________________ _ _ __________________ 2659Tf00 2660f00 -------------------- -------------------- i - - - I- `\\ IP `\, �/ --------------------------�--------------*Mrlp- — _ __ _ �C ----- _ SF 11 ' 1\ `\ SF X X X 'e s'C, _________ __________________ �� C \ / IN Mil \ IP " — \ — — IF , — -__ _ - -------------- - - - -- - \ — — Ts __I\___________________________________________� i -- `\ '\GRATE YNCL� /GRATE/NCET /; � - - _ _________________ •�_ _ .,_ENTRANCE OTkOM�4751iT0 �� 907761V=47536 IECY"\\ I -------------- ------------ W IN IN- cn — — ----- —-- / — -- 269,9,100 iq/L -_,U �,- f� 9 ----- E Tl? lABLE W/D_Tf�GHT-OF-WAY ___---- -- -" — — - ASPHACT PAVED PUBLIC ROADWAY W I -------------"- I i ,_______ 7 _; _-_-" —J ---- ----`-``-- �OO1�1�001 00 IP BOTTOM=47379 . --- -777 - = — - _ - - - 1 ------------ — I � -- - -- ---- I - ' —x — —X X CIP -------- -- A_ _ _ n_ -- 00 00 1427°14'63'E- i 626.68'(RBM) I I I I - --------- --- _ ^' _ 1 ` ------------- \ \ 11 \\ \\IN IN IN I IN >\ \ _ `\ ---- �� ---- = \ ----------------------------- WzfT --_- _______I \ A &E W/D GHT-OF-WAY -------------- ---` ------ -- ASPHALT PAVED P1191C ROADWAY A 4i16T' --- - ' ---- --------------- ------ Qo Il 00 00l 00l 001 001�001 ODI __-- _�1__----� /(IP - _- _ ___�� - - - - ---- ----------------=='------------------ - SF o --M-- z M-- z M --x MxM- C ------------ - ----- — - / / / I OF kEPCO EASEMENT Ts \ // _-___�------ ---gg..-,.�30_PG: 293 -------- ` W W rU) V `2 1 W _Z J _ U VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. I TITLE KEY SYMBOL El 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 W W U) Z � � Wz W��wof (DzWWU;W 8N Z�H(0g F W< 2 W Z >zUW<40 �o mij U)Z)2aQz< a2 <� ZU2 W ZH1-- go <of J U V, UZ) Of) U-I z Of Z U d Q sa a < of =J > F o O U zx wg H & ti q �a oIS o< REVISIONS REV FD/AlE COMMENT ��•� CNEMMI)BY 1 /22COUNTY COMMENTS PCM 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 � B 0 H L E R �� 3.13 TEMPORARY SEDIMENT TRAP S I 3.14 TEMPORARY SEDIMENT BASIN SD F318 OUTLET PROTECTION Or F3311TEMPORARY SEEDING TS TS F3 TREE AND PROTECTIONION Tp TP R DUST CONTROL 30 15 7.5 0 30 1 "= 30' 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com _.a W Z F;M%N YALI ER Lic. No. 0402056625 1 05/18/2022 -J SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE IA SHEET NUMBER C-604 REVISION 1 - 05/18/22 PHASE IB SEQUENCE OF CONSTRUCTION a 0 m U 5 0 3 A 1. 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 IB OF THE EROSION AND SEDIMENT CONTROL PLAN. 2. CONTRACTOR SHALL GRADE AND BUILD THE SIX TOWNHOMES PROPOSED WITHIN SBA LAST SO THAT SBA CAN REMAIN IN USE UNTIL THE SITE ADJACENT AND UPHILL OF THE SEDIMENT BASIN IS PERMANENTLY STABILIZED. 3. ONCE SITE IS STABILIZED AND STORM DRAINAGE NETWORK IS INSTALLED AND IN USE, CONTRACTOR TO MUSK OUT SEDIMENT BASIN AND OVEREXCAVATE TO UNSATURATED SOIL. CONTRACTOR TO BEGIN WALL CONSTRUCTION TO BRING REST OF SITE UP TO GRADE AND FINALIZE TOWNHOME PADS. 4. CONTRACTOR SHALL KEEP ST-1, ST-2, ST-3A, ST-4, AND SBA OPERATING UNTIL SITE IMMEDIATELY ADJACENT AND UPHII OF THE SEDIMENT TRAPS IS PERMANENTLY STABILIZED. 5. CONTRACTOR TO BEGIN INSTALLATION OF ADS SYSTEM 1. 5.1. STORMTECH MC-7200 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A PRE -CONSTRUCTION MEETING WITH THE INSTALLERS OR PRIOR TO UPSLOPE STABILIZATION. 5.2. STORMTECH MC-7200 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-7200 CONSTRUCTION GUIDE". 5.3. CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR EXCAVATOR SITUATED OVER THE CHAMBERS STORMTECH RECOMMENDS 3 BACKFILL METHODS: 5.3.1. STONESHOOTER LOCATED OFF THE CHAMBER BED. 5.3.2. BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE. 5.3.3. BACKFILL FROM OUTSIDE THE EXCAVATION USING A LONG BOOM HOE OR EXCAVATOR. 5.4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. 5.5. JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. 5.6. MAINTAIN MINIMUM - 9" (230 MM) SPACING BETWEEN THE CHAMBER ROWS. 5.7. INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12" (300 MM) INTO CHAMBER END CAPS. 5.8. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE MEETING THE AASHTO M43 DESIGNATION OF #3 OR #4. 5.9. STONE SHALL BE BROUGHT UP EVENLY AROUND CHAMBERS SO AS NOT TO DISTORT THE CHAMBER SHAPE. STONE DEPTHS SHOULD NEVERDIFFER BY MORE THAN 12" (300 MM) BETWEEN ADJACENT CHAMBER ROWS. 5.10. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND PRESERVE ROW SPACING. 5.11. THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIAL BEARING CAPACITIES TO THE SITE DESIGN ENGINEER 5.12. ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH IT" INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECTHE SUBSURFACE STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF. SEE SHEET C-908 AND C-909 FOR MORE INFORMATION REGARDING THE ADS STORMTECH SYSTEMS. NOTE: THE COUNTY E&S INSPECTOR SHALL APPROVE PREVIOUS PHASE PRIOR TO THE NEXT PHASE COMMENCING. 1 "/RON P/PE FOUND a 0.5' A90kF ORAOE LOT 17 BLOCK ✓—TEAKWOOD PHASE F LAKES SOUTH VT)D. 42 PG. 38-T / LOT 18 ZON/NC.• PUD (PLA NED UNIT OgVf x J—TEAKWOOD PHA5,�2115E, SINGLE FAMILY RE_r F(.R?F.S'T IAKF.S .SOI/TH ------------ --------------- J 0 m r7 Z Of W W W rn Z W O ZDZWO Z W H Ur W > Ur Z W W 0 j W F W Q 2 W Z _J>z0UJW0 m 7 m Q 10 Z Q Z (n� W ZFH L)zof< ~0 Q J O0 U) W Z Z d Q > a < of U W H REVISIONS REV i DATE I COMMENT 1 i 05/18/22 1 COUNTY COMMENTS I 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.: DRAWN BY: VIRGINIA UNIFORM CODING SYSTEM CHECKED BY: DATE: FOR EROSION AND SEDIMENT CONTROL PRACTICES CAD I.D.: NO. 7 TITLE KEY SYMBOL VIRGINIA STORMWATER [301] SAFETY FENCE SAF MANAGEMENT PLAN FOR V192076 MEG/PM RTY 1017/2021 OBP-0 TEMPORARYSTONE CONSTRUCTION EN 3.05 SILT FENCE SF XX- 3.07 STORM DRAIN Ip INLET PROTECTION PROJECT: RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA El CULVERT INLET PROTECTION Cjlp ® IBOHLER// �p 9100 ARBORETUM PKWY, SUITE 360 3.18 OUTLET PROTECTION RICHMOND, VIRGINIINIA23236 Phone: (804)893-8200 [331] TEMPORARY SEEDING TS TS [332] PERMANENT SEEDING pS PS 3.38 TREE AND PRO ECTIONION Tp TP R DUST CONTROL DC pC 60 30 15 0 60 1 "= 60' VA@BohlerEng.com TH F;M%N YAUZ•iER Lic. No. 0402056625 05/18/2022 SHEET TITLE: OVERALL EROSION AND SEDIMENT CONTROL PHASE IB SHEET NUMBER: C-605 REVISION 1 - 05/18/22 a 0 ti 5 0 3 n ,X. ------------ IN INN IN 00 IN IN IN I IN IN IN IN 11 IN IN IN \NN \\;ffN$\IN \ - - T SHEET ; \ ♦ ♦ ` ` ``�U� �♦ __ -_ -- , IN IN IN IN 00, IN IN IN IN IN Alorl\� ------------ '' - I \ \ \ I ♦ \ i � ` , � TEAY7Rdo RARy`.G7JNSf 7CIION \ �—`-_� _ 4I IN 61'U0 _ P�EPL1 o� �o �. a�ti�e0�� / / \\IN \\IN I , ,j I IN ----- PROP. WET STORAGE :Al' �� "" ^� ELEVATION: 477 �` `♦ ;\ 9; / IN _ , / - O , IN I _ _ / \ i A '. ♦ ♦ SF IN IN IN 26y j Oo� 49 IN IN IN \ 400 LF. SF �9 --------- \ �♦ \ Ts -OVA �,,,- -! _ I I < ----'"''' - -- I \ - ST 1 \ :=� .i%�/ -- ; sF i t 215 L.F. SF/ 0.25 AC - - — ,\,;;; 'IN AREA 2.00 AC. 100- s _ , T _ / ON " - --------- TP 00 SF mac, m AREA — � f . 87 i C= 0.60 " P 400 LF. SF _ _ - i 215 L.F. SF/ 0.25 AC _-_ --_IN _ / \ �! 1. IN l '7 % , I -------------------- ------ -- o ------- ---- _________----_--J ---o= _ ---------------- -------------- I, xo Vt IN ------ 1 i [MATCHLINE — SHEET ----------------- -- So' i --- ..-------------�-- [MATCHLINE — \ ST-2 V `♦ ``, \` IN \/ �\ SHEET C-613 VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF 3.02 TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C ESILT FENCE SF E INLET PROTECTION Ir 3.08 CULVERT INLET PROTECTION Clr 3.18 OUTLET PROTECTION Or 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDINGTREE PS PS AND PRO ECTIONION DUST CONTROL DC pL 30 15 7.5 0 30 1 "= 30' z a w w w z F� Ww�2Wwv��z In c7?w> U)Z)Q<mZ mZ) 2aQz ozD,<� z J�0_ J d U) z a J O U w 1-- REVISIONS REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS 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 Jw .p Lic. No. 0402056625 L0518/202� .AMa SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE IB SHEET NUMBER: C-606 REVISION 1 - 05/18/22 a 0 0 U 5 O 3 n \ �'I1I11;1 MATCH_LIN___E___ -_ SHEET__ C-401 \ TP -- / f - ---------- I /r r r I II % / 1 , r 1 I `1 495 / T f I----------- -- -- -- t , vvF ` 3-- _ - -- ---- ------ TP DC TS"-------------- i TS _ \ \ o \ _ - — — - ' ' ; : ' /� , \, j EX 20 SAN ESMT \ EX. B"SANITARY \\\\ SF \ _- - ------ - ;\__ - -49 _ i ' l EX MH � / APPROX COCAT/ON PER AS-BU/CT ' ;' �, / _= i - / -r ( �` `-' ,>' , / PROVIDED BY.. ROUDABUSH, GAZE & ASSOC, INC T/TCEO.- %'h1L4ND TOWNHOUSES AS BU/CT WATER \ 4,N1� -- -- - ----- ---' � \ ( CINZ SANITARY SEWER" t `1\ CC YIMON E7?LT RG✓N/A TP ___ 0,4TED 1012911994 REVISED O10911995 I i ST__ __ ON UD\ (PL�{v'E%' ''-" ------------- \ \ \ \'` AREA =1.91 A ----- -I _ - - - -- I I I I, ' PROP. WET STORAGE ELEVATION: 473 I ' OI q16 _,-- TS _, / ' I I 1 � I I r IA}},` ` n -�1� `I ` 1 li•h1 U I P !O CLEAN WATER P P HAZARD ' i , DC ; !O`. 1 I MATERIALS I , 'Ts , iilin `\ \\\ \\\ O C= 0.60 r`I , ^. - STORAGE �� / , ' / i � i i i 1 i 4 ll \I ii Iq\ `\ `\\ \\ �` ` 1, �,' ' IP 472 \ I / \ `` ` !O , ll ' __ . TERGENTS,SOLVENT AND WASTE WATER OF ; z , \ I ISTRUCTION REAA ENTITIES IP)NiI \\ 4 1 III Iql , \ \ \ \ I , 1 , r` I I I ' r' , ' 111 "" ' \ --gi ` \ I I < VE ICLE FUELING AREA ' ` ' I ' I ,q8° 1 AND SPILL F ' $� CONTAIN ' ' IN EN T , I / ✓� /� '\ 'I _ II IIII III ` \ , It , \ \ , I 1 'I ,•�_ _ 5�/'; II 'lll1 \ , \ , GAUGE, &PORTABLE J. I , I 1 I I I I \ \ \ \ \ I \ `I \ I 1 _ `I CORETE WASHOUT AREA 00F -------- I I I 1 I I 1 \ \ \ __'----_ _ � I ____ -_•1 � o%' __ -- - -- - DC I \ I \ I TS \'.'\`I'\1, \TP. SIF ✓ i' '" / _-' / , 1,I 1I, t k '' -`_____ \✓ ,, ✓ , ✓ , i - _- - _ - 1 �/ '\ i'i\\ I, `\'; � SF .. i i I i 1 I I I ' I I I 1 / - -- - III '1 ✓. ✓, / ; ' / ✓ , , ,__________J i III II ' , , , , . , , , _ j \ I 1 rP 1 \ 1 ' I / I `` _________ PROP WET STO \ \\ \ � \ i I Ii I ELEVATION: 487� E r � vv ` DC � ' S � ' I / I 1 \ ___------- = ' - _ _ Illl 'lt'1111 _ I l'll ' I f 1 ' I r � 11 1 � ' i t i i 1 M 1 1 ``\ 1 \ ; I � I I1 C 0.60 �rS ' • ' I I I I 1 I � C - ; — / , \ -% / - / r a� 4g5 -----------------'- _""'�/ /�� '� '-' 1 ' 11 I 1 ; I `, `I V+-4, __-'______ - - Imo_ --'// i l; 11 `\ 'IB9', At ET I, IP aLF.-12" - i i' _ ' i I I I , ' ' " _ 1 \ \` \ ` 1 ✓ , CL PIP SEE; HIS i -------------- TP ------------- , / Y , , , _ - - i / i \ \ EX AS-1> MH = 47250 TP /N = 46.T81 X /NV OUT = 46T.71 EX. A5-10 M/ R/M = 46709 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 O 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 r E DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' � \ 3 yg� z KG LU W W Z LU CDw rn ww a8g ' WF�zWU2w� (DZ Z�LH(�>_WW _w¢wZmN U)? 2 Q Q Z Q a W mij Op<aZ~moo Z J(D O_Z Q a' Z � d sa J 8- Q W< i J F ro LU O U zx wm � s �a O� REVISIONS REV DATE COMMENT CNECItF 1 05/18/22 COUNTY COMMENTS PCI 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 Ok Z V 4 YA R y .p Lic. No. 0402056625 � ��A 05/18/2022 ``1�t4 �`S'S/ONAI. ECG SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►B SHEET NUMBER C-607 REVISION 1 - 05/18/22 a 0 m U 5 O 3 n MATCH LINE -SHEET :C:-611 tm a V ` 0.60 TP - `---- j -- 1 1 --- ----------------- _ -------------------------------------------- DC , ___ ___ __ I / 4 / __ _____ ___ ' l - ' I _____---- \ / I I If If DC I ------------- Ts ------------ '„lam= _ _ � 1 \, ��((�� t 11 1 �//''�� V J / / r --- ------ --- -- If i If \ ' ; f' 1 I ' ' l l S. ♦ C —465 If \ = --- \ , .� If I If DC If If If If I If I / ,i // If I 60 TS _ __ t If 1 I I I 1 '1 I 1; 11, '1, 1, I I jl � � / %' � ;' /' l /' % l /'- ' ' / / \ `\` \ -_- - ♦\ ` \ ``\ I 1; ` ` '\` , DC l 1 I�'ilbu��ll(i(I 10) ` Z LSF \\ I I I1 1 \ \ \ SF - / --__----------------- O =1.22 AC -- - 0.60 _____ ________-______-- -- - 10.25 AC - -----' 1 , 1 / , 1 _J 1 / f I _ I , I _ - LANZ N/F % / VIRGINIA UNIFORM CODING SYSTEM PRANCES BR=9ZN`RR/CIANEAO 11NL� I _ _ _____ W/LLARQ-HOWARO '5�/0(HEAO FOR EROSION AND SEDIMENT CONTROL PRACTICES FAM/L Y 7k- UST, 7, AL I PROP. 103'BAFFLE---------- \ ROP. 36" RISER WITH B_ , I 1 I I I I \ \ \ \ \ ID \ NENT'24" RC STM ti " ••••�-. III � '� =S9.c ilk �� r.•i��j�� F'i r) ♦�1;}�e�in ��t, ��a. �� sae �a, — 'tb � - TMP.• 04600—dQ OOF'928✓Q I { NO. TITLE KEY SYMBOL ZOr1Y/NG.• Rl (DES/DEKT/ALJ,' U Tp S/r1�FLE FAM1�Y R64/DEN{�/AL I i i i ! 3 11 SAFETY FENCE SAF 1If SF III ' i i I i i TEMPORARY STONE (1[ CE 3.02 CONSTRUCTION ENTRANCE SILT FENCE TION 1 ` 1 I / 1 CID 1 ` ❑ STORM DRAIN IP N W 1 A `• O It 3.08 CULVERT INLET PROTECTION CIP .\I I 1 , , I ' I I I , I I I ' I ' I ' 3.18 OUTLET PROTECTION OP SYSTEM 1: PROP. t 87,000 CF UNDERGROUND ' I DETENTION SYSTEM I I I WITH ISOLATOR ROW O TEMPORARY SEEDING TS TS 1 1 I \ / 1 \ OPERMANENT SEEDING PS PS I \ 1 l3.38 AND PROTECTIONION TP TP I I 3.39 DUST CONTROL DC pC i I I I I � I \ I ♦`\ 1"/RO PIPE FOUND'-', ♦ gp `` 0.5' A�7go�AWE Tp `\ 30 15 7.5 0 30 W Z a W W W Z F� W W0 z�WU� MJF W Z 2 W W U)Z)m<10 z rn U) OZQQQF Z J�z Of J 0 U) EL J O U W H REVISIONS REV DATE COMMENT 1 1 05/18/22 COUNTY COMMENTS 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 PKAfY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH OFl. Z V N YA R Jw .p Lic. No. 0402056625 � ��A 05/18/2022 ``1�t4 �`S'S/ONAI. ECG SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►B SHEET NUMBER: C-608 REVISION 1 - 05/18/22 I 1 I I I II I 1 1 1 I I I I 1 I I I I I I I I I f I I I I I I 1 \ I I 4fOq 1 1 I I I " ' / f r rS I 1 / I/ 1 / _ _ L I , / ; ' o 1 U 0 O 3 n ----- - _ _ _ I 1 _ � \ ` ` �_` `♦ _`` _`` ___\ \ _ _ _ _ _ _ / II I, I,I \\ \``♦ ` I ♦ 1 1 ' ` _ __` _ / 1 \ I 1 I b'A�/fl�f,W/D>Tfl �{Gt?'�c9,E Wfii� \ --- --- ----- ------------------------- --- - \ \ _ _ /,. _ __ AOWAY - - - - - - - -- - - P D Pf/BL C AO - \ - - - - - _ _ -- - A`iR<1ACT AVE _ - — _ - - _ - _ - --- %NV A 469.28 I — �4z-iaQrr__ - \ — - - -- -- 1 \ - - - --- -- - -- /NV B-46923 I _ - - IP -47?_ _-_ ---------- - - ♦ i —� 1 nm nn-��`nm�nm 007OO1 _ _ r,0(11 _ 001OL —001 �DL nnT ---- / 2656f00 .I� LODLOD--- TS t -- _-' �o �L��__ "_ 658fOD1 \ 2659t00 2650t00 766J OD 1 Z +; LOD L01 i. -- -- ------------- — — — — �{ CURB /NL[Y. � ------------------- ---� - ---- ---- --------- - iY� --- -- _'" — — --- ----- - --- — — i --- -- ----------------------------------- _ I 'n ___ _ /NV B=47351 \ � N ``. iii(il``_�___________________________________ ______________ ______________ , 1 OOl OOl \Ob7, Ol OOl Obi OOl OOl OOl OOl OOl OOl OOl OOl OOl or ' =' \ 1 \ -' JNVA=146790 '` ` r --___------------------------------ --` ---- �a---------- `` , - c ---- — — -i_ �— —� ------------ -------------- Ile SF _ ____ -- __ __ / '- --- -48 j- _ - _ ---- = _-- -- --_____________________________♦�\` a /----'�`--_-_---------------- ------ �•' / GRATE JN[ET l ' i / --"-----'''11'1\\ KJ7i0M 5 _ W W 2 U) U) 266+ 0 EMAIL -U,S. RM %ABLE W/D[H 1?IGHT-OF--WAY ASPHALT PAVED PUBLIC ROA901AY —001 _p°a�0 i' ARY CONSTRUCT/ON o a �EN _ CEMENTn CURB IN[ET RIM-41779 907TOM=47 ,79 — —• — — N2T"14'53"E — — 626.68' (R&M) MAE 26 — - k15 �l \ ' � I I I1 , I l _ - ,41. ,%7;__ jj /A. �F OF -WAY ' AWJYAY -------------- VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF R 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 R PERMANENT SEEDING PS PS R AND PROTECTION ION TI'1 TP TREE R DUST CONTROL DC pL` 30 15 7.5 0 30 1 "= 30' cp 3a Z 8 w as W W U) Z F Q W 3tl f7 U U p- Z � — o� Z W H LD W> ww W — U ay C7W W —W g W U � Z W w W W W I_ p:W< Of U) g — W Q 2 W H Z �>zUW<np �o H �ofQD_'JCD (� w Q Q Z Q 'ax 00<CL Fof <CL �0UU D'U °ZU)aa s o Q of F �o O U zx wm � s Ea 06 REVISIONS DRAwxa REV DATE COMMENT CNECI(EDBY 1 05/18/22 COUNTY COMMENTS PCM 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 ra_WH [ice F;M%N YALI ER Lic. No. 0402056625 1 05/18/2022 _J SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►B SHEET NUMBER C-609 REVISION 1 - 05/18/22 0 0 9 5 0 3 n PHASE 11 SEQUENCE OF CONSTRUCTION \ p '' 1. CONTRACTOR TO INSTALL REMAINING UTILITIES ON SITE INCLUDING PROPOSED WATERLINE, SANITARY MAIN, AND 3 / i //ir /i �'' i '♦ ._ \`\ \ /Y�": moo."/' ..i' %� \ ``♦ ' '/ \�\\ STORM SEWER. Z� j _ �` - /7 ' '%' /' �% �� %' / '` '".` --____ `\", 2. CONTRACTOR TO INSTALL STORM INLET PROTECTION IMMEDIATELY AFTER PROPOSED STORM INLETS ARE INSTALLED. Of a `♦` `\ \ -�'' j' _ -.ii/ '/' '\�`♦ - - - -♦` \ \"�� 3. CONTRACTOR TO BEGIN CONSTRUCTION OF THE PROPOSED BUILDINGS. W 8 �) , /` ♦ `♦ ` \ ` \ \\ \ — — / ,,'' '' jy,;' \� \\ \ ♦\ %`\\ �\ \\��" 4. CONTRACTOR TO CONSTRUCT THE REMAINING CURB AND GUTTER FOR THE PARKING AREAS. Z_ F DJ d ' `` ` \ �; (% `~J \ `.�♦` `♦\ ` ` / ' /-' \ ` `` - \ �` \ \��\\ 5. CONTRACTOR TO INSTALL THE PROPOSED ISOLATOR ROW. U Z � U U ffi `\ `\` `\ \C`' /_. \ \ `�♦ \ \_ i / �' .' . : ' \\�%" h �:j i':/ .:::'/ \:\.-" r- �/' '-IN ` I` \\`��I` Z W H Z W - ♦�\`♦ ` 9 /' _� // Gi' \�:� o\ v - ♦ \\\._ 6. CONTRACTOR TO BASE PAVE THE PARKING AREAS. W (� U U wy `\\`\\\\\`\\:�\♦♦�;�` \�`♦_- �`'`� / ,%/'%ter/,/- `♦`\ `- _\ ''' '''♦ ```♦ ♦`` \j`•},1 ZLUWVj DJ $ti / , ♦♦ __ / I /yyo" n r '' \��,(j`%��`� --_eee _ 'r , 7. CONTRACTOR TO BEGIN INSTALLATION OF ADS SYSTEM 2. U W W / \\ \ \ ♦♦ ♦ , /,, ( , ':� j'/ ,/ /,'il///,ii','l, 1i 1,,�;,_\ , - \` / , , 7.1. $TORMTECH MC-7200 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS - DJ Q = W Z g `� IN IN ``` \\\\\ `� `,/// ! s;; ` \ /emu;%� ' �`);;, ( ;". . �;;� ��; I�`�� ___ \ �` \\ / l COMPLETED APRE-CONSTRUCTION MEETING WITH THE INSTALLERS OR PRIOR TO UPSLOPE STABILIZATION. J Z U W U O `\ `\ �`♦ `\ '� ` - ; "�`\ :'i / ' `+J+ �% '' �i 1 ` t- '�♦;`\;`;� \;-\71,�:; = __,- �', 'i ` / // 7.2. STORMTECH MC-7200 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-7200 Q CD Z Q \\♦ \` \mij \ - --� .' / i i S-� ' \``\". \�� \ `` ' (� `_ ��•� `_ ;-_____ ' I ) \, \ CONSTRUCTION GUIDE". Z U DJ Z \`\ iVrP / �) `�O`\`'\ IN `\ �\�:� �\ `\\� \\ \_ 7.3. CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR EXCAVATOR SITUATED OVER THE CHAMBERS U U Q d Q H a o RO��F o-� \`c\;�\`"�\`,\\,.\\ ; / \ Uz�QF O gym 1= -� � — ` \ `--_- 1 STORMTECH RECOMMENDS 3 BACKFILL METHODS: U o i / / `♦ ' C '-- , `\ `\ \� \ \\\\``\\` ` ` \ ,`\' `♦ __\``.' 7.3.1. STONESHOOTER LOCATED OFF THE CHAMBER BED. z J U Z U a'& ` ' \\``\\``\`♦�\ `SIN, IN. \\\\ \ ' \\`\ `IL__ -� •` ``_____` `` \, /-'' : ' / U Q W z I r \ - - UBGRADE " �' JE % `.\ \ ` \ \\`♦ `♦`\`�__-_ ____ ; 7.3.2. BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR $ Q d Z U d Q yv -- \ _ V / ___ p ry1 \ \ 1 'f`- 1' \ \\\ \ `\` ''-' aiDT �� ` \ "" " `` �� _ l , 7.3.3. BACKFILL FROM OUTSIDE THE EXCAVATION USING A LONG BOOM HOE OR EXCAVATOR. � Q o P _ _ STM _ - BERS - J "- pp1 H-1U \ _ '\�♦�♦`\ \ \\\`\\\\\`�?�\ \ ♦\ `,)♦\ � __ _____ _� � � ''/ % : 7.4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAM U =o �R - _ --____�. -'�' __ � � - -_ PLACING STONE. - � /.y � / \ .., ,- � \� _. _ _ _ - O \ \\\\ \\\\ `♦\\ \ � \ - a- i ` � _ 7 5 JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLAC m /,�„�,. � r .-_, , � ,.- ;;% \\ ,,, -____ _ `�` `\ \♦ \ - � \\\\ \\\ \ \♦\� ` \\ \ ___ � 7 6 MAINTAIN MINIMUM 9" (230 MM) SPACING BETWEEN THE CHAMBER ROWS \ — — — — — _ — r - p4 - F` `-'"� - .�,�` `�.\ - ` "" "`�\"\'"` \ \\ ' - -- - '' 7.7. INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12" 300 MM INTO CHAMBER END CAPS. rl U z68 ° /- "-"-"---- \�`\`, ♦ \_ _ -\ `\\ \"` " \\ \�\` ♦ \ ` . - / 7.8. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE MEETING THE oIS ------- -- ,yn .. .\� Q ' 4g ;;`_ 483 `-__ \- ``\`�0\\`�\\\`�"`� ♦„ `\ ` / - ` \ \ \ - �: j / - EXJ1/ �'%' p0 - =48p \ o\\ _:� \`\\\ `� AASHTOM43DESIGNATIONOF#3OR#a. V - 1'�' i / - -- - - \ - ,; -' - - --\ _` `� ` \♦\\`�; '�I� \ \\\ `\ \`�\ ' /i i 7.9. STONE SHALL BE BROUGHT UP EVENLY AROUND CHAMBERS SO AS NOT TO DISTORT THE CHAMBER SHAPE. STONE 2 -----`--- \'--`---`__________________________________ �� -�: R, 1 - /-_-\♦\ STM �\�`:0\:`.♦\\ _ ��= \\\ \\ ♦`\ \\\```�\\` '/'''/''' / / o \---_------- / - -' �=- c \ \`\\ ♦. \ �_ _ = `�\ \ \\ ♦ ; '� - r DEPTHS SHOULD NEVERDIFFER BY MORE THAN 12" (300 MM) BETWEEN ADJACENT CHAMBER ROWS. -- - _-- S /- O'\ �` ♦\�`- 486 10 -� `�\ O\ \\\�..\�. `-\ \♦ ♦ \ \ �' `.��\�\``/'� I ♦♦,I �\ ` \ \"\\\ 7.10. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND ' , v� � ♦` \\ o\ \ , PRESERVE ROW SPACING ------------- \ " " . ---- -- / Aa _ - � b 9 � �`\ ` `` `�� ` ` ` ` ` ` \ ` ` `\ \\ \ ` ` \ ' ' ` 7.11. THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIAL BEARING ---_----------------- \ ---- --_ ________ "---__- __; -✓,, \- \C2\♦ \ `� `�♦ ♦ \ \ \ \ \ \ \ \ \ \\ `I IN\ CAPACITIES TO THE SITE DESIGN ENGINEER \ - -ss A-90 e as \ `\\. \ \ REVISIONS \ \ -- "`----,"- -_-- --- \ -- _ --- s j;: / C=0.fi0 yB8 _ g A `\o \„`I ,J♦\\ ` ``\J\ `�` `\ `\ \`� \`� ♦+ / 7.12. ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH IT' INSERTS DURING CONSTRUCTION FOR ALL INLETS TO `\ ' ; \"- A-100 `:: °,♦\`� `, ``.` ;` �;: ; `\\\\ `\`� \ `\ `\`\ `� \ `\ ♦ \ ` \ \ `♦ ♦; ;; PROTECTHE SUBSURFACE STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF. DRAwx er _ _ � �i ^ '.\✓' __ \ , - _ \\>\` ♦ ` \` \ \\ \\\\ \ \ \ \ \ \ \ \\ \ \\ ♦ ♦\ JV7ET Fi,-:3BQ .' 1 , REV DATE COMMENT i \ - �%' I ` - - `%`` \ '„-''" G0.85 I ` "\��` \ \ �`.`. `�\`\ \ `,2\ \ \ \`\\ \ \ `\ \' N60d�00=0Q-}'J 1 1 SEE SHEET C-908 AND C-909 FOR MORE INFORMATION REGARDING THE ADS STORMTECH SYSTEMS. -- ' ______________________ l �% C - - \ \CONTRACTOR T IN TALL ALL PROPOSED IDEWALK . -_- � ` ♦ \ I 8 O SSIDEWALKS. 1 05/18/22 COUNTY COMMENTS ',':;- ,;; I I / _ STM C�.85 ;♦o\ �`�`\ `\ \ ` � IRTY --- ---- \ \ - ----- - - —�-- EX-J2 / " ''� ' ' ` 1 ' i / -90 ``:`\� \ `\ \ ` `� ` \ `\ :.I `� \\��``\ fN.G� %�(1' RES' N�lf1G \ \ 9. CONTRACTOR TO PERMANENTLY SEED ALL DISTURBED AREAS AS SOON AS FINAL GRADE IS MET. ---- _ .l , , � „�' '\/� / , " "A9y o- - STM `_; ;=i ; \\\\\\ \ \\ \ `\ \'IN\\ \ \ \ \ ` ` \P \ \ \ ♦ ♦ \ \`\ \ \ ♦ I'\\\ \ `�\ ``\ 10. CONTRACTOR SHALL KEEP STA, ST-2, ST-3A, ST-4, AND SBA OPERATING UNTIL SITE IMMEDIATELY ADJACENT AND \ -_- -- -_- _- --- __------- ---- ----' r F. i�/ ., /' < _--- A� - \ --_ "-- - _"_ i _ r\\\�'" , / ./ -"_ _ 9 `�;\\` \\`\\ \ \\ \ \ \ \� \\ I \ \\ \ \\♦\\\ `♦� \ \ \\ ;� \ \\ ; -�; 1 1\ \\ \\ ♦\ `, 'i UPHILL OF THE SEDIMENT TRAPS IS PERMANENTLY STABILIZED. \ ----- - _ ----___-- % / C-0.82 \o\ - _, o' ''" III \o\`\\\\ \\Q\ \ \ \ `, 1 1 1 ``\ \+\\ \ \ ♦\ \`�\\ \ \\ \ \ `\ \ 1 1 ;` 11 CONTRACTOR TO BUILD WALLS AND SIX 6 TOWNHOMES IN THE SOUTHEAST CORNER OF THE SITE ONCE VAULT 1 \ ---`----------------- _ ' - ///� CO /' — - rlll 1 ,\, :\\, ,, , \ \ , I ; \ \y, `\\ \,\ . , \ `, ♦ .`\`:` : `.,1 ; ( ) --\\ "''--___- - -' rq' -' STM -.I \\\\IIII ``I"1 ``I` `\ \\`\``\ `\`\ `\�`�: ♦`\ `�♦`♦` ``. `\ ` ♦,`.`:\.`\`\\ ` \ ♦\+ ' � -- --_ ---_ --_- \ --_"' � \ -------------"y- Y' � __ _. _ � "--� - \\�\,;\,I i' i� `\ ` \\ \\ \ \ `\ \ `\\\ \ \ \ `?2 \ ` ♦ `� \ `\ `, i 1 1 �, ` \ `\ `\ � . I I \ , \1 IS FULLY OPERATING AND SITE IMMEDIATELY ADJACENT AND UPHILL IS PERMANENTLY STABILIZED. cc 1\ -/ IN \ \ IJC3TE: THE COUNTY E&S INSPECTOR SHALL APPROVE PREVIOUS PHASE PRIOR TO THE NEXT PHASE COMMENCING. C-0.52 / _�-___ __ ¢9 „1, 1 Il\ 1 1 \\\ ♦ 1 11 I `\ 1 \ ---- - `- \ / / ,�9 _ \ 11 Ill lr// 1j \'d. 1,\�\\`\\\♦ ♦♦ 1\1'\\ \♦ 11 !/iil \\\ \ `\ 1 1 \ I \ \ \ I , I \ \\\t♦` 11 1 \ 1 \ —\\ -' / `'i j1A ',,'j'__" - -P.9 _ II 111' 111,\ ,/ \`\`\\` ♦11 / \\ \\ \ `-`- r 9 _ "iiii i`;I �' ' ,i'„ /, i�iiii \`'`\ \ j \ 9 ♦ \\\ ;'' -�� , ` �'%1^ OI IV ,'II , , 1 I 1 I 1 "♦♦\\\11 /�/ % r C-0.88 -_ ♦ . A �1 ' ' / r Ill//, I -v -`-aiS ,__ _ , iil lul Ill/ '' 46 ii' IIlIh1 AA` `AAA AAA'/r \ ` a. - / II O `\\ \ t r I pl S l i� y,♦ \ ` ` \ \ \ I I \,\, (.IINI -` . \ ♦ I _ `\ r / r I \ \ \ \ \ �.J. f \ -✓ I ! �J CC-1 ♦ n \ \ \\ \ `1 ` I I , \ I `S � r I ♦ r \ \ \ 1 , , \ III 1 , \ ```\ \ \ \ \ \ \ \ `` OO STM / �?.- , tr ' ,\ < \ \ ♦ r \ \ \ \ \ \ \ \ \ \ \ \ ; 1 1, III 1 1 1 I \ \ \ \ ♦♦` ♦ , `\ _ \ \ \ \ \ \ III 1 1 / 0 A-70 , b , ♦„ , \ 111 IIIII 1 1 1 , 1 _/ ` - -- ' / ' ' ♦ III; �;;�; , , I ♦ \ , \ \ 1'11 1 11 , I � '1 ; 1 I 1 \,\ \\ \♦, -62.1 STM li I , \ / A i i 4� LL-- ' I [, „J,.`.__ _-_ r A-70 pp I,rr l m \X, I '"' \\`\ A,'4\ _ —_ , \`♦ ''JOpoo - A-71 Illi�;11 �;, LP-Tri 482.95 .\ ,\ ````♦-\ . -_I\ \ ,♦\ \�- • �-- -- -- I `"\\\\♦♦" I \ o I I I I� ��II I I ' �'"• o � \ \ \ `\ `\ \\ 1, ;111 IIII ;', `, `\ `\ \ ` ` .R ' \ , _ `�� : J` .`. \l --`�-- /'\♦\\ / i $TM`\ \ \ \ ' �' y'"_' \ \ 1 ' 1 \\1 \ \ \ / I I , ♦ ' � `\\ ___ � -62• r C=086 A-71 �\\\ \ \ \ `\ `\11'1 'I11 11\\ '\1\ \ ` '@\ /' ,.•\°'' 1' ; I I IIII ��" '\ \ \ I \,I \`\\` \\\ \_ \ \ ♦♦ / , , '/_ %' '\\ f I ::� '"'' _ -\L \ .r_a`I I l ' l r ii ;ul i ____-- ��\`\ \\'`,'`\\ ;';',1 1'`'\\, '\\\\'`'\`\ Know what's below. \ \ 1, \\\ \,II\ \\\ \\\ - \ C-0.85 I i'/ , % ' i-'!.'.'lta�'i%:%i' / ,'-`:`�` ' _ _ __ - ' I 'I ____-- \ \` ♦ II \ \ `------ (;8 before you dig. \ \ ♦ \ 1 r' ' ' ' , , -/�,,/„� , O, -'� \ `50 , I / _ _ II';"1 6 pm , \`_ \\\` 1,`\`\'`\\`\ l'\'\'\\\\\ •'--------- _'.:' r \� `- \ /�/' ',i \ I 'III' bS \ \" `♦`\�'` `\\\\ `\\\\ \\\\ `��\ ' / �'; ;; �; ' ; ' \\`\ \ �\ \ \ \\ \` - ---_------- ALWAYS CALL 811 ;�•:\`-,.ram-�\, / / r h , , , , ' II I - `\` \♦"\ ♦\\\ \`\\ \\\\ \\\\ \\ _ ____ ; " It's fast. It's free. It's the law. %1/ \ \ ' ' '"�.''ii ' �i'' i , / ' ' / / - --' 502 / r STM ; ,\\\i-_ w- PE < \�\♦ ♦ \\ \\\` \\`` `\\\\\\\ \\\ ' i i i /i ' i '/ `\ - - - ```` `\\ 1S\' w ♦\\\♦\\\ \\\\`\` ` \\ \,\I ` 0 / \ � \ \�;_ �==;N-====_=_=__=-' I A-�L � � \ `\ \,\\ ,\\\,\\, \, `\`\,\ \\\\`;;,\��--------\ \F- ♦' `.� `--- ; ; ; ;' . _,;,; ,;'�;;, c M©N{•f�E.4L7,/ OF��G{N/; ;''- �,�\= ;---------- --- `'� , a' ti _ - I s< ♦ ♦� 4gs , - \\� \, \\,\ \\ \ \ \,\♦ IN ------- - \ NOT APPROVED FOR D ZO J P 86 oo b ; �,', `\ \\\ \♦♦\\♦`\ , ; �` \\` \\\\ \\ \\\ i _ I \I , ,;�;1' 111 1 rN'/P•-04BB,5=l/G�-✓N J-d0 (lV 1 \ `_ y++� ♦` _ �' - --- - _ _ \, , - ,, , \, \ \ hi , ; ;\:: \. ` :: ♦. \ ,--\`\``\\rIi''\�' r `\ b A A- ----- A-61 -'2 _$t.- „\ \\ \ \\ �___ \ \\ \ �7/�y� �4(/D (PLAN7yED' !/N�T;D ,ELOPMENT� \\\\fA'�`::: \CONSTRUCTION - E\,IEw ' I - ,fir `A `qy� p�y��J/�\`♦`� G \ \ -IN --------s i ' `� \\` ``� � ` ♦ - `♦\\ \\`\ R AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION \ \ \ DOCUMENT UNLESS INDICATED OTHERWISE. \8\` \ \ \ \\ \ I , , I r \ \ ,9J( ,A - 6 STM �q \\ \ ' ` ~� I`''\ PROJECT NO.: V192076 / 63. 6 a �k :I\\V\'`�C\\ \ � \ � \ / /// i/ ', It I ` __ \-` ' ' __ �yp�2�' -. DRAWN BY: MEG / PM -¢ I \°('+♦`": ``Z�`�;t`� \\ \ CHECKED BY: RTY \`��\ \\\�`\ `\�`, ( li i \, 1 _ % (i 4. 'S>� .� STM \ \', i ; `; ', `, ♦\�, +`��` \ \-- :��\\ DATE: 1017/2021 -64.1 ��` VIRGINIA UNIFORM CODING SYSTEM \\" `\\`\ \\\\\\„ , \ I ,\\ _ I Illi. - _ :' /' , _ __ -50 C=0.90 \ \ O \ \ 11 ' 1I 1 , I \, ` \:\``.`\\\\�`�`�---- / \\\�\\�` \� �, ,,,,, \I I , ____ _- �c= sTM '`, , \ � „ , � , ; , ,\ \ `-`\` � :. `-,`\ \' FOR EROSION AND SEDIMENT CONTROL PRACTICES CAD LD.: OBP-0 IN PROJECT: \ \\ \ NO. TITLE KEY SYMBOL \\\.....\\,, r ____:', \\� ��`--\ ;\`♦`I `\\\`. ,- ; �„ I ,\ _ _ A-40 \;� �\`'`;,'I\`; \`,\`\\ ` � \`']?� � VIRGINIA IN / , ,`,\\`, \,,,\,,,` , `--------------- 9 "- / ;,; \ 1 \I I j 1,, ,\ \ . \\._\ \. ,♦` \ ` �:\\\\ STORMWATER . \ ' ' ' '- `^\ m \ \ ` .\ \ \♦`♦\\\\ \\,\ I\1, IN __________A_/1____ = _ 0- ='If q1 \ / ', , I ' • \ \ '' ` 3.01 SAFETY FENCE - „ ` - --- = _ — _ / MANAGEMENT PLAN I I 1 \ 1 1 \ T I \ \ I ,\\\ 48 '" `�`??\;,I / - - FOR := STM ``\ \\\`\ `\`\\♦♦`♦\\ ~/ ; TEMPORARY STONE �/--"_-__ _ __ _-'_ \ -64. i /r/ m A-41 _STM r l i ' ,n I , \ , /�____ -` \ 3.02 CE CE ____ 0%"' / , -_ CONSTRUCTION ENTRANCE I i `.\` O RST RESIDENCES ------- I ;\\,`__%` ' , ' C-0.90 \' A-30 --- _ ___ \ - '\ \\ \ O __C�.80 1 3.05 SILT FENCE SF XX- -- - O PROPOSED LOCATION. \� /� A i i,// ,/i ' - , -_/ �. �`♦\ \', \ Y`\ r '_\`, �J"Y1 cv C-0.65 , , 4 i S 1 A8`� / '' ' / ' " / - STM , ,, 1- r __\ ` , \ '`\ ' `, `, ` ' r \ \ " m ( ' ` ` , A-33 -, I - I 1 ' LANDS NIF SEMINOLE TRAIL `I \\\ I\ ;I\\,, `,-O� ♦ O C�.60 1 , 483 ' _ - ; r' _ RB I P `�C!/ / , 7AWVCES'BREEDEN BR/CKHEAD AND STORM DRAIN AND ASHWOOD BLVD. 1 I\ ` \ I `In \ "' 'i"J STM STM i i l 9 q ' ' C=0.85 3.07 I ; , `I \, \ `,,I\ \ `\-- N''I ,I - - 1 , r B� , sTM _ --fL-L,4f�0 HOdI�ARO BR/CKHEAO INLET PROTECTION O CHARLOTTESVILLE, VA22911 \ , n `\ \ - -- v C-20 C-2 / , ABq486 85 \ A_30 - -_ _ STM l ` ) ;� ;IIII ;` ro , , - FA�LJ/LY TRUST, ET AL ALBEMARLE COUNTY, VA /; ; ; ; / 1 I \, o ` I 9 C-30 482 A 31 128 PG 71-Q r 1 I ( , ,I I,I\\\ \ \\ / \ III\\, ♦` 11, - / , , _ __. �" ""XI I I l I / % \``\ � I ; `, �;Ipp „ \� `' sTM%' '- 1, \�� `♦ \-,TMP.• b4600-00-00-028✓0 li i i i ` / /: /' `♦ \ ` , IIIII\ \ \ \ \ I `\\ _ \ - ' STM ZON/NG• Rl (RES/DENT/AL� 3.08 CULVERT INLET PROTECTION CI P / / , " �I'dn , I \ \ \ - �^ C�.75 W W STM W ` I, I ' , _ _ _ i i i' ` \ / / `51'1' I I I I „ \ \ � I STM 1 i / ' A ' 81 , I 'a: ,, ' r I / I _ - 1II;II; 4 r. 33 STM '` A-31 C=0.85 STM USE. $YNGLE FAM/LYRES/DENT/AL B 0 H L E R �� 1 1 \ `\;\;�\ ;- O c i h / \ D 4g1 4 0 / -3 \ `♦ G_ i i `.`\\\ I\ ♦ p STM I I ``\\\I \`\ 478- / ; ; `,,' �, „\, \, \, o `n I 4g1/ • , "• -- S � � � � 19100 ARBORETUM PKWY, SUITE 360 L3.Ijll OUTLET PROTECTION OP RICHMOND,VIRGINIA23236 ( I \ \ ♦ I / C-10 < , `. ;,; / ,.' ;'/ / , ; ' ' _-- _- -`_ ` ' � I II II I jl jl •• � Phone: (804) 893-8200 ♦♦\ o II I I .� A19 m: I II I j II J ♦ \,\\, �� it I 8 , 1,: , / \ , 0 /' 1 3.31 TEMPORARY SEEDING TS IN VA@BohlerEng.com ,\I \\ �`,,, r , / ,1/ A1l ❑ TV 0 a D-21 D-30 ; i } B -Y0-1 B'30 B-20 II I II II TFI F` I II B-10 I II II 11 I II II� nll ,,;\C-40 II II I,' o- ; / II I I II ------" ; �� -';%',= '- -'' /.-' �-''',-'"--- 1 ; \\ ♦ I^I, ,_-``I\♦`'\`,� "IIi1`,'I'I I EX-F1 III D-10 C=O.80 C..80 I PV P`S Li II II 3.32 PERMANENT SEEDING ___ ' '/';, 1��\♦\\,,,11�',u, nI, C=0.83 1- #y I , 1 1 1 , I 416 _ , o ♦, C=0.88 ' - \♦ `II ,, I111 II C /\ I I 1 1 1 , r I �" I , --- ; , ; , ,- / / --- _ , ,I Illl 'd` II11 '` 4 'II _g0 '\ , 1 1 ' , ♦\ p I I O NYA R oll_ �' 11 1' , I r q55•,, 'I I ` 1 II I I II Y II II ------------ ___--_____-' i _____'l / i ;1 II1;li ;'i;'il''1„ Mlle I I,, I II II I\ _ _ __ - STM I , ' I _ ` , / // \ \p11 `� + I i � I � I �L 25'Qi -------------- J i // / : ' %-' .''.'' N 8/2 i/ i�';';'I'I ';''JII II ' `I I\ .. 11 , ' ' , \` \`\ I III II I/II 0� 05/1 022 r r , / /- -' �-_______� - 3.38 AND PROTECTION _ , , , , , I I I , I , ' loll ill � `, r I 1 I I = I `' I TREE PRESERVATIO Tp ----------- ,;, --� , II II;IIIII;I,I t 1 -, I'llll �_I —XJ `\ 1 YI ,- I`' , , I Q\`` `. U`♦ o I u u ❑ A TP I�r G� -------_-_ _-,�' )%�II; F20 II ;II„I I �" I p II I II II II II r I s`S/ONALEt, r -"-" I 11 tp I , ---__--- -'`/ :'�:'"_- -`♦� i %,.{'i li li; '1'i,l ;; I, 1 `, I; IIII ' _ S10 , STM ' ; \1 iiii a�l v I- 1� % y �3\ ♦ ` I 1I _` -_\ ♦ , I r ,IIIII;IIII'II 1 \1' II _ -'S .,`�Oi '.I I 1 \ , I \I, .�}(6, , y ----- -�-� .'''' % `' ', ; `I , ;II; ;IIII;; IIII;, 1r-0.90 I,1 ;I 'iilI1 \I STM -_-___'�--�-% 1 I 11 1,1 n II A`J 1 I11, J a 1 / i i i ' r 1 i 1 •` ' ' S , -40 I \ I \\, \ STM-T • • `•� O SHEET TITLE: DUST CONTROL DC OVERALL `\ i',,_-_'' � / -- �' ' \`;' STM I.N\ \ IN 4485,....�482 \ , ,ter\i 470 468 4 4 4E5 EROSION AND __;__;-, ;, � , , , ( \ \\\♦ 475 480 I I I 471 4�p I_ IN I / b 46 4g5 `I I ` 1 I 1 6 5 }I 465 b h SEDIMENT Ili`I '1 , 'I' . . ' j/' 4g4 5 - `I, II 1 \ , 1 \ \\ ph 1IAA 7 ` I ' I '1 '1 i 1 _ ' t. ' 111 / i 1 - 1% �� \ \ - - � - ♦ \ `, ` \ \ 1 I / i CONTROL PHASE 11 1 l 1 -,a , , I I I1 1 I - I I \ /{ I I ' --_ ' - "�' -__' --- --- - ---___ ,`\` ,,` ' _ I , ` `I `, ``I ,, \ , 1 '`I \ (✓%,�I I ` -- LOT 17 " "' '-=''_-_--"..' -- II`,` _I I,1 ,` , \, \\\1 1` 1\ ,111 , `, \ /';' , _ � �__-_'==='L="_�:: . ___ __-"_-_-__—�-i--_`-'�=vcv=�=TI �\`\," I I \\\i' i ; 1 1 ' \ I \`\I\I\\\\`� �P __ I 1 1 - _ , -\ - �`-`- - _ - "= �� p�__ ' I 1 1 \ \ \ ` I I \ \ I r -'< [ 1T "' T --Q J�/�(?] ��Z BLOCK ✓-TEAKWOOD PHASE 2 SHEET NUMBER: _ --__��_�={a I ♦ \ `\�` / 111 IIII \ - �--'"--"__'-�-_ 'Ls -- I I I I I I I+`\ \II`\\ \\I \I\,� 1 -'' . \ --- — `; :`� FOREST LAKES SOUTH -_`,Y�aI+V ' I I \ ` r�%TQ�c(x �6�WNH�yO� r I f 1 �INI` 11\\, `�.py 3 \ D.B. 1642 PG. 383 IN I_�_- _�' FN �4/�`Jf`'11 Jl1i/-iH / = �' l r l \�:�:N` `,` , LVT: \ `.�'� `-` \ 1 = / l , l l l -- - %' OB. 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S/NGLE FAM/LYRES/ ENT/AL - _ --- ' \\\ USE_ ;7NG FAMfLi``RES/DEN,T/AL; / ; / -- -' / " \, \ ---- / 11 \:`: \; ..� ;o\ \ ILA .'`:, FORf..ST /AKF.S .SOUTH i 1"=60' REVISION 1 - 05/18/22 0 ti 5 0 3 n IN IN NZ / -- \` I IN IN I IN IN IN QV IN IN IN S ` �T 5HE ET �:` I I ' C-{�� '---- ` 1 I ' , ; , /, �% l l ; /; r: I; 11'7r= t✓r57`♦` ` ;\ `__` IN ��\♦ _ '1 -IPA wIN \ IN, IN TP OV IV ♦ IN J I / / T \ X IN INN, IN IN / + < \ TEAYRORARy`.G77NS'IR(/CIION \ `-,� \ \ \ � ` • -- �`` \ _---_- IN /-' ; ;``, `,\``;;\``,```\1, 1, `\ \♦ ` 1,V L'( P `___-'-I Pj \&5� `'�`\ '1, �•--- ; \ ----------------"sY`� \ \�`------- dP—\ /: j':'%' ` -"_- ,�/ OF �!♦ / \ ` 1---- ` \ �\ \,\\\\\`,` \\ ♦ \\ \ `\ \\ \`: :\. ♦ . — \ 0.01 IN - ---- 0 - \ \ PS - tea\ ' ' /: 00�/ - `♦1 n , -/ l ```\\ \` ``\ ` ` STM SF \ ;.� ♦\ �\`\\\ ♦ \ `♦ ` _ \\ \\`\ \`\ \\♦ - ``\\ \ `\ `\\ \\ \\ \ ``� IN IN, IP a A , �N`: \ \ \\ 9; \. \ \'" \ ; IN IN IN, 0.03 AC \' \♦`\\:\ \ ;`\ IN IN .`\\\` rybp �1PIt'OPS�ifTENi�, =% C=0.85 `;,\.; ` \ \ . �\ ♦\ \\ ` \a� q ` $�c` 3eo\ �e 'v ob C=0.85 � ,•� �` -- I ' , ' / S STM '``� \ ♦`\\� �\ `\ ` \ `\\ ` `\ `\\ \\\` `\ `\ ` `� `\\``\ ` ` `\ `\ \ \\ \\ \\ \ \ 000 IN '' j' ' i O �' Q / / .. - �. ) , - , P ��,,II�� I I I II I \ \ \`\` `\`\` , ` \ `\\ \ `\\ `\ `\ ♦ \ i\ `\p`\ \ \ \\ \\\ \ \ \\ \ j.; _ - 6p <' - ' - C=0.75 PS 1 `\ --- IN 21 -------------- ------- _ __ = J - --- o I -- _______ 5p4, PEDESTRIAN CEMETERY Co MECTIONTO �- 00 ��\ t 'offif ff• mom" IP , I i it I `\\\♦` ;`\\;\```�\`\````;`\\ `, `\\ `\\ `\I I it it `i `\\\ \ `,, `\ `\`\\�`\ \ ``\\\`\\\````\\ ``` \ \ 1 ` \ 1 1 \ , \ , , \ , \ , , \ `, ♦ ` ` ♦ \ 1 1 \ , \ \ � C-0 88 RR A_ 7 0 PS � '.'''� �/' jj' , i'' G0� , STM ``\ \ `\\ `\ A \ ' STM ;i;(';;(/ i i o ; ; � I / � A 71 /i;;; ;(';/; / i ; / LP-TC 482.95 C pp \ / I , ; , , O ♦ \\ \ C=0.88 - ' TP TIN 475.00 / IN / / 1 / l •:;. N � v I(I III I I I _________ `� ` 2:1SlOPE- ' -- Q \ `J PS A-23 IN STM A-61 Z, A 62 4B9 Z - C=0.90 \ / STM - ' IP A61 `• `� ` C=0.85 / - 1 48l jI 1 \ MATCHLINE - SHEET C-613 VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF O 3.02 TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C E SILT FENCE SF —X—X- 3.07STORM DRAIN INLET PROTECTION Ir 3.08 CULVERT INLET PROTECTION CIr 3.18 OUTLET PROTECTION 3.31 TEMPORARY SEEDING TS TS 3.32 PERMANENT SEEDING PS PS 3.38 TREE AND PRO ECTIONION TP TP E DUST CONTROL DC pL` 30 15 7.5 0 30 1 "= 30' r, Z a W W W z F� WWKWU2U C7?W Wz> Fw¢=0w miU)Z)m m<z mu)maQz OZQQQF Z JC'J rnU)D_ a W U) UJ x _j o Q J O U W Cal REVISIONS REV DATE COMMENT 1 1 05/18/22 COUNTY COMMENTS 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 0. Z V N 'A R y .p Lic. No. 0402056625 � ��A 05/18/2022 ``1�t4 �`S'S/ONAI. ECG SHEET TITLE: EROSION AND SEDIMENT CONTROL PLAN PHASE It SHEET NUMBER: C-611 REVISION 1 - 05/18/22 0 9 ti 5 O 3 n 6� _IN- 1 1 1 1 I 44, MATCHLINE -SHEET C-401 I/ TP / I IN Z O C l ; IN IN, IN \ Ag 1355p ll�l IN I I IN ------------------------------- A9g \ \ \ \ \ \ \ \ \ '\ `\ `\ I\ p III\ \,\\ \\\\ „\\ --- ----- IN IN RGiid/AIN o\ p6A ---------------"- - -- ---_- -- > \� (�\'`!N� D NIA-' " --- / , ;=__ _---- - _ PS IPA \ I \ \ \ \ \ - = C-2 1 /_ g N 11,411 I J .189 DC 11`11, \\IC _�♦ ♦ ♦ \ \\ `I`I �I1`, I j C-4 1 C=0.65 X IN, I II `I\ `\ `I 1I /� I I \ \ \ �0 77 A r%IN / t / I', C=0.60 \ \II ` ��`/`I r 1 \ I \ ` (q ',. __ �' RD US \ \ ! I \ I II \ \ \ I 1 I TER E `I ` ii In `\ \ \ O •, \ \ \ ` TORAGE I P STM STM / 1 `, II II\ \ `\ `\ __ \I ,II \ \ 5 `, 1 V-\ P i I I I II`I\ ' \ R 1 IN C-20 ZAI PS i \ i I i `\ ii i'i i'i `♦ `\ `\ `\ \ ` ' O I ` ` A 4D T TS, SOLVENT I ' l AND WASTEWATER OF EA AMENTITIES ^� / ` IIIIq III \ \ \ \ ♦ I __�_� I , P C-41 I 1 II"I.I` / `n nD ` \ `\ `\ �\ `\ ♦II , gi , a V ICLE FUELIN \ ' , ' ♦♦♦♦♦\` \\ / 'Ill'IIIII `\\'\ \ \ \ I I, 1 I' I' 1 ND SPILL ' `♦ 1 '♦ 1 SFI' I G 7 C10 \ 'll Inl I� \ \ \ \ \ I I II , . / j11 IIII II\\ ♦ \ \ \ \ \\ I II I I CONTAIN ENT \ I I � ;'pli 4i'ry \ `\ \ \ \ `\ \\ f\ `I 1 I ,II \`\ `\ Q ' ---_ `1 I I 1 1 'I � \ ♦ vO �` •' ,' 'IIII'4i14 it \` \\ `\\ `\ `I `I `` ` 1 11 `, I 11 \ , 1 1 �y IP ` IN, , \ I I I 1 STM \ I � AREA, RAIN PORTABLE IN I \ Nil , 1 TOILETS _ C 1 0 I �1 ;' �/ I I A6g ` ' I , I / IIII JJJ 1 - ' \ \ III, Q� E WASHOUT -' ' / '' / I ' I 1 I I 1 ` `\ `\ \` 1\\ \`\ ♦\ ♦\ `` \ / ( I; '1 ' I / '�O� I I II I I -' ' IN "' -� / . / / I I I I '; \`` �\` 1` 1\ ` ♦♦` \'` \ ``-�_ _ ' I ' \ ' 1 I II j C-0.88 I\♦♦\♦`'I I ,I ;I11 , I r I j1 II II i yj IN INI ♦♦ `♦ ♦1 I 1 , `I \ ' ' 1 I I I I 11 II ' ; � m -- - / / !- - '"''/ / ' ' ^ I'I', i I\ \`\ \`, 1`11`\ ♦`♦ \`♦ \\111\ `I `I 1`, I` I,� ♦1' I ♦`. I II ! 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A5-10 Mf R/M = 46709 VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF 3.02 CONSTRUCTIONONE NTRANCE CE CE 3.05 SILT FENCESTORM DRAIN 3.07 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 TREE PRESERVATION Tn TP 3.38 AND PROTECTION I r y I r ' T !- DC DUST CONTROL pL` � 1 I 30 15 7.5 0 30 1 "= 30' W z EE DJ z W W W1 zWWw� F W Q c W —�QCDZ rn7�QQ Q Q LU Q F 0 Z ZJ M Z Vj of J D_�a J O U W H REVISIONS REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS Know what's be10W. 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 OF` z V N YA R y .p Lic. 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N/F VIRGINIA UNIFORM CODING SYSTEM FRANOES BREEDEN �RRIOAXEAO ANq j j W/LL4-HOHARO 5f 10(HZXO I FOR EROSION AND SEDIMENT CONTROL PRACTICES W9.. 128'IPG 70 1 NO. TITLE KEY SYMBOL TA 04600—dp-00—�28✓Q ; Ps I ZONING.• R1 (/DES/DE/YT/ALJ,' U TP S/r1�F�E FAM1�Y R64/DEN{�/AL O SAFETY FENCE SAF / 1 I I i i I i i TEMPORARY STONE C(1[E CE i i f i i i 3.02 CONSTRUCTION ENTRANCE '`, IN 3.05 SILT FENCE TION Ir SF X X II I II II 1 `, 1 ' II I II II I IjII �° 3.07 STORM DRAIN Ir II I II I ❑ INLET PROTECr I I II II ,p N � `• (71 � I �ffl Ij j Ij Ill �, �; ', ::::3:08 CULVERT INLET PROTECTION Clr II I II II V 1 1 1 II I II II 1 I 1 II I PS I 3.18 OUTLET PROTECTION Or II II II 1 , I , IN 1 3.31 TEMPORARY SEEDIN PERMANENT SEEDIN G TS TS II II II \ \ I OG PS PS a t \ I IN 1 4l5 \4 RD DUMPSTER �\ \ I 4T3 I 1 \�— 1 " /RO/V P/PE FOUNO�"� / SF �` 0.5' l�E�fRAOE TP `\ TREE PRESERVATIO AND PROTECTION N TP TP r E DUST CONTROL DC pC 30 15 7.5 0 30 1 "= 30' Know what's bBIOW. 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 ANO 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 BOHLER// 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com TH Oc, l. Z V N YA R 7' .p Lic. No. 0402056625 Ile ��A 05/18/2022 ``1�t4 �`S'S/ONAI. ECG SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►1 SHEET NUMBER: C-613 REVISION 1 - 05/18/22 I _r a 0 9 ti 5 0 3 n W W 2 U) i ------2592f ---- -----------'___-___- - E X-�:�5, T- 9 L9BLE W/ IGHT--OF- WAY I ASPHA\ PAIiEO L/C -------- eQ7 STM —0101��001 H-10 IP ---------------------- I SF o 1 J EJ -- - ------ _ ----- X V _ X� — _--- X - - J; I I N27°74'5$' , _--�\ ---------- - -� ------- \ 79 --- _______________ _-- _ / ---- -- ----- - ------------ — ©I I \ 1 I 1 1 11 \\\ VIRGINIA UNIFORM CODING SYSTEM FOR EROSION AND SEDIMENT CONTROL PRACTICES NO. TITLE KEY SYMBOL SAFETY FENCE E SAF R TEMPORARYSTONE CONSTRUCTION ENTRANCE (�[ l/C E SILT FENCE SF E NLOET PROTECTION Ir 3.08 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 r= V vJ 2 W Z J U Q J 0 m r, Z EE W W W 10 z W f7 ZjZ(AU W W H W 0 Z W W z j W QI.gt,t=oE 2 W ZZW > z 0 W 0 ai022aQZQ 000<CL Fof zof< 0 Rof J O 0 U) W Z Z d Q > a < of U W H REVISIONS REV i DATE I COMMENT 1 i 05/18/22 1 COUNTY COMMENTS i� 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.: 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 FM%N YALI ER Lic. No. 0402056625 05/18/2022 SHEET TITLE: EROSION AND SEDIMENT CONTROL PHASE PLAN ►► SHEET NUMBER: C-614 REVISION 1 - 05/18/22 m 0 n O 3 A N O 0 0 O 3 w z 3 N 0 z m 99j n 0 0 N W _m > T W . i 2 x 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. IT. 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 IA 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 BLVD. 6. DEMO ALL FEATURES NEEDED TO INSTALL ALL PERIMETER CONTROLS. 7. PERFORM GRADING SHOWN IN PHASE IA 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 OF THE EROSION AND SEDIMENT CONTROL PLAN. 9. CONTRACTOR TO PROVIDE TEMPORARY SEEDING AND DUST CONTROL OF ALL DISTURBED AREAS AS NEEDED. NOTE: • INITIAL DISTURBANCE SHALL BE LIMITED TO ONLY THE DISTRUBANCE NECCESSARY TO INSTALL INITIAL PERIMETER CONTROL AND MEASURES. • CONTRACTOR SHALL NOT COMMENCE PHASE IB OF THE EROSION AND SEDIMENT CONTROL PLAN PRIOR TO THE COUNTY EROSION AND SEDIMENT CONTROL INSPECTORS APPROVAL AND COMPLETION OF ALL PHASE IA CONSTRUCTION. PHASE IB SEQUENCE OF CONSTRUCTION 1. 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 IB OF THE EROSION AND SEDIMENT CONTROL PLAN. 2. CONTRACTOR SHALL GRADE AND BUILD THE SIX TOWNHOMES PROPOSED WITHIN SBA LAST SO THAT SBA CAN REMAIN IN USE UNTIL THE SITE ADJACENT AND UPHILL OF THE SEDIMENT BASIN IS PERMANENTLY STABILIZED. 3. ONCE SITE IS STABILIZED AND STORM DRAINAGE NETWORK IS INSTALLED AND IN USE, CONTRACTOR TO MUSK OUT SEDIMENT BASIN AND OVEREXCAVATE TO UNSATURATED SOIL. CONTRACTOR TO BEGIN WALL CONSTRUCTION TO BRING REST OF SITE UP TO GRADE AND FINALIZE TOWNHOME PADS. 4. 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. 5. CONTRACTOR TO BEGIN INSTALLATION OF ADS SYSTEM 1. 5.1. STORMTECH MC-7200 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A PRE -CONSTRUCTION MEETING WITH THE INSTALLERS OR PRIOR TO UPSLOPE STABILIZATION. 5.2. STORMTECH MC-7200 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-7200 CONSTRUCTION GUIDE". 5.3. CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR EXCAVATOR SITUATED OVER THE CHAMBERS STORMTECH RECOMMENDS 3 BACKFILL METHODS: 5.3.1. STONESHOOTER LOCATED OFF THE CHAMBER BED. 5.3.2. BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE. 5.3.3. BACKFILL FROM OUTSIDE THE EXCAVATION USING A LONG BOOM HOE OR EXCAVATOR. 5.4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. 5.5. JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. 5.6. MAINTAIN MINIMUM - 9" (230 MM) SPACING BETWEEN THE CHAMBER ROWS. 5.7. INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12" (300 MM) INTO CHAMBER END CAPS. 5.8. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE MEETING THE AASHTO M43 DESIGNATION OF #3 OR #4. 5.9. STONE SHALL BE BROUGHT UP EVENLY AROUND CHAMBERS SO AS NOT TO DISTORT THE CHAMBER SHAPE. STONE DEPTHS SHOULD NEVERDIFFER BY MORE THAN 12" (300 MM) BETWEEN ADJACENT CHAMBER ROWS. 5.10. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND PRESERVE ROW SPACING. 5.11. THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIAL BEARING CAPACITIES TO THE SITE DESIGN ENGINEER 5.12. ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH IT' INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECTHE SUBSURFACE STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF SEE SHEET C-908 AND C-909 FOR MORE INFORMATION REGARDING THE ADS STORMTECH SYSTEMS. NOTE: THE COUNTY E&S INSPECTOR SHALL APPROVE PREVIOUS PHASE PRIOR TO THE NEXT PHASE COMMENCING. 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 BEGIN INSTALLATION OF ADS SYSTEM 2. 7.1. FOLLOW SYSTEM 1 INSTALLATION NOTES IN PHASE IB SEQUENCE ABOVE. SEE SHEET C-908 AND C-909 FOR MORE INFORMATION REGARDING THE ADS STORMTECH SYSTEMS. 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, ST4, AND SBA OPERATING UNTIL SITE IMMEDIATELY ADJACENT AND UPHILL OF THE SEDIMENT TRAPS IS PERMANENTLY STABILIZED. 11. CONTRACTOR TO BUILD WALLS AND SIX (6) TOWNHOMES IN THE SOUTHEAST CORNER OF THE SITE ONCE SYSTEM 1 IS FULLY OPERATING AND SITE IMMEDIATELY ADJACENT AND UPHILL 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 MAYBE 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.) J 0 m REVISIONS 1 REV I DATE I COMMENT CNEc.EDeY 1 1 05/18/22 1 COUNTY COMMENTS PCM • 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: RTf 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 YAIJ ER Lic. No. 0402056625 05/18/2022 SHEET TITLE: EROSION NOTES SHEET NUMBER: C-615 REVISION 1 - 05/18/22 SAFETY FENCEPL 3.1T1 PERSPECTIVE VIEW dam: h.`� y.. - 1 1 - 1. 1 •1 '-.' 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 WIRE SCREEN CONCREFE BLOCK i r,r4w , • 1 ��f,� GRAVEL FILTER WIRE SCREEN 1j fl�R�wi rr,r� I ��V1�: ilia*�Q�i%1 - Ll��►�w"\�� i 1�IAi► ��.��yrlJfl�i!`rti��sl� r i�'� •��. 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 FLAT AREA WITH NO DEFINED CHANNEL PLAN VIEW La d SECTION A -A FILTER CLOTH KEY IN CIA"; RECOMMENDED FOR ENTIRE PERIMETER A A 3d (MIN.) de r PIPE OUTLET TO PIPE WELL DEFINED CHANNEL PLAN VIEW 1 a d SECTION A -A FILTER CLOTH KEY IN 6"-9'; RECOMMENDED NOTES: FOR ENTIRE PERIMEFER 1. APRON UNING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. Lc 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 302E1 75' MIN, EXISTING Al 3 PAVEMENT 1 5:1 FILTER CLOTH A MOUNTABLE BERM 6" MIN. (OPTIONAL) SIDE ELEVATION EXIST/GROUNI 75' MIN. -T- 10' MIN. TIONAL)2' of-WASHRACK IL MIN* 10' 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. 3" MIN. FILTER ctoTH SECTION A -A REINFORCED CONCRETE DRAN SPACE SECTION B-B SOURCE: ADAPTED FROM 1983 MARYLAND STANDARDS FOR SOIL EROSION AND SEDIMENT CONTR04 AND VA. DSWC GRAVEL CURB INLET SEDIMENT 3PLAE 07T 6 FILTER / / r GRAVEL FILTER 1P• RUNOFF WATER WIRE MESH WITH SEDIMENT IY/ FILTERED WATER e 0 e .,. IF - I� a _ SEDIMENT IIII o Pa: 'TiIIIRT�� o: - CONCREIE 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 3.38T 2 DRIP SNOW BOAR[ METHODS OF TREE FENCING NICE 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 nuw III - 111- SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) A 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 S12CCiCS 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 DROP INLET 307E1 PROTECTION 2 X 4" WOOD FRAME DROP INLET T tWIH 1.5' MAX. FRAME 3' MIN.�7 GATHER EXCESS AT CORNERS PERSPECTIVE VIEWS STAKE FABRIC �:-1' MIN. o. ELEVATION OF STAKE AND J FABRIC ORIENTATION DETAIL A SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. SOURCE: N.C. EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, 1988 SILT FENCE CULVERT INLET PLATE 3.08-1 PROTECTION �NOwnLL TOE OF FILL �ULVERT 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. 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 R= 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 IbsJ RYE' 2 bu. (up to 110 lbs., 2.5 lbs. X - X X - X Use for late fall seeding., wlnur (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 added to summer mixes. ANNUAL RYEGRASS` 60 lbs. l'A lbs. X - X X - X May be added in mixes. Will (lulium multi-Flomm) mow, not of most stands. WEEPING 15 lbs. 5'A oTs. - X - - X - Wsou season perennial. May LOVEGRASS bunch. Tolerates hot, dry slopes (Erasrostis "Mi.) and acid, infertile soils. May be added to mixes. KOREAN 25 Its. approx. I'A X X - X X - Warm season sound legume. LESPEDEZA` lbs. Tolerates acid soils. May be fLesnedem sti ula added to mixes. a Northern Piedmont and Mountain region. See Plates 3.22-1 and 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. z EE W W 111 Z F Q' WuJ�2UU)U (Oz W lL W> �wQ=0w OnZ)nC =Miz U) 2 ILL, z P: On 72<<Z 0"<a Z JitfnU) Of XJ 0 Z ll Q J O U W H REVISIONS REV DATE COMMENT 1 1 05/18/22 1 COUNTY COMMENTS 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 REVIEVJAND 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 05/18/2022 _J SHEET TITLE: EROSION DETAILS SHEET NUMBER: C-616 REVISION 1 - 05/18/22 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 m �w W ¢ m o W� N w"oo vW�iWcpiW -< Y i F- U> H O w � F-O J 4 p6 • i ao '� dp N �1n3 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 lLIN 1� 20' EXIT SECTOR n - LEVEL OR n r GREATER APPROACH w Q I� CHANNEL ALONG CENTERLINES loot' - z Z o d U B V)) 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 (EXCAVATED) FLTER CLOTH ORIGINAL GROUND ELEV. -SEE PLATE 3.13-1 COARSE AGGREGATECUSS I RIPRAP CROSS SECTION OF OUTLET GLASS I RIFRPP �+ x FEE 5 D � % DRAINAGE ARR EA (IN AC.) /DINTIRSION 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 e DIAMETER BOLTS. 2 1. tG 1 2' Fp, HAND WELD HDIH srD£s �cDNnNuaus SLOTTED CO 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 90' ANGLE 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 ,1 8 IS MAINTAINED AND DETAILED DRAWINGS 12" I'- 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 817JCAL PIPE HAND SHORT (AIRS.) 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 LAW. 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 INFLOW 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 Z W W WZ FW zmQ W UWua ZEd WUOfW a3ag N ZU) _ 8d§ 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 a'ZU)0-Q sa EL Q of = J J ro O U zx wm U � s �a o� REVISIONS REV DATE COMMENT DRARx ar CHECKBDBY 1 1 05/18/22 1 COUNTY COMMENTS PCM 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: 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 05/18/2022 -J SHEET TITLE: EROSION DETAILS SHEET NUMBER: C-617 REVISION 1 - 05/18/22 SEDIMENT TRAP DESIGN PHI IB Trap Drainage Storage Volume Dimensions Elevations Embankment Outlet Top Spillway ID Area (ac) Total "Wet" "Dry" "Wet". L X W X D (it) "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 0.61 82 375 41 157 41 218 73 x 34 x 2 81 x 42 x 2 480.0 482.0 478.0 479.0 483 3.0 2.0 2.5 4' x 14.5' ST-3A 1.91 256 310 128 129 128 181 64 x 32 x 2 72 x 40 x 2 473.0 475.0 471.0 472.0 476 3.0 2.0 2.5 12' x 14.5' ST-4 2.53 340 406 170 171 170 235 74 x 37 x 2 82 x 45 x 2 467 469 465 466 470 3.0 2.0 2.5 16' x 14.5' MOTES * 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 ANTI -FLOTATION CALCULATIONS RISER DIMENSIONS BUOYANCY CALCULATIONS INTERNAL WIDTH 3 it VOLUME DISPLACED INTERNAL LENGTH 3 it RISER VOLUME = 92.01 cu. ft. WALL THICKNESS 8 in FOOTER VOLUME = 54.00 cu. ft. TOP ELEVATION 452.4 ft RISER INVERT 447.50 ft TOTAL VOLUME = 146.01 cu. ft. CONC. FILL DEPTH 0 ft BUOYANCY FORCE = 9111.09 lb. BASE WIDTH 0.00 ft BASELENGTH 0.00 ft DOWNWARD/RESISTANT FORCE VOLUME OF CONCRETE CONC. FOOTER DEPTH 1.5 ft RISER = 47.91 cu. ft. FOOTER WIDTH 6.00 ft FOOTER & FILL = 54.00 cu. ft. FOOTER LENGTH 6.00 ft OPENINGS = 1.66 cu. ft. RISER OPENINGS TOTAL CONCRETE VOL. = 100.25 cu. ft. PIPE DIAMETER 21 in ORIFICE 1 AREA 0.09 sq. ft. ORIFICE 2 AREA sq ft. RESISTANCE FORCE = 15037.4 lb. ORIFICE 3 AREA sq. ft. WEIR 1 WIDTH ft WEIR 1 INVERT ft BUOYANCY FACTOR (MUST BE GREATER THAN 1.25 TO BE ACCEPTABLE) RESISTANT FORCE / BUOYANCY FORCE = BUOYANCY FACTOR 15037 / 9111 = 1.65 1.65 > 1.25 r d r .PSG SEDIMENT TRAP DESIGN PH IA 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 2.15 290 375 145 157 145 218 73 x 34 x 2 81 x 42 x 2 464.5 466.5 462.5 463.5 467.5 3.0 2.0 2.5 13' 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 10' x 14.5' ST-4 1.19 160 247 80 101 80 146 57 x 28 x 2 65 x 36 x 2 467 469 465 T466 470 3.0 2.0 2.5 8' x 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 WITH AN EMERGENCY SPILLWAY PROJECT : RST RESIDENCES LOCATION : SE CORNER OF SITE BASIN ID : 1 DRAINAGE AREA : 7.90 ACRES BASIN VOLUME DESIGN WET STORAGE 1. MINIMUM REQUIRED VOLUME = 67 CU. YDS. x TOTAL DRAINAGE AREA (ACRES) 67 CY x 7.90 ACRES = 529.30 CY 2. AVAILABLE BASIN VOLUME = 529.30 CY AT ELEVATION 450.40 (FROM STORAGE - ELEVATION CURVE) 3. EXCAVATE 529.30 CY TO OBTAIN REQUIRED VOLUME * ELEVATION CORRESPONDING TO REQUIRED VOLUME = INVERT OF THE DEWATERING ORIFICE. 4. AVAILABLE VOLUME BEFORE CLEANOUT REQUIRED 33 CY x 7.90 ACRES = 264.65 CY 5. ELEVATION CORRESPONDING TO CLEANOUT LEVEL = 449.20 (FROM STORAGE - ELEVATION CURVE) 6. DISTANCE FROM INVERT OF THE DEWATERING ORIFICE TO CLEANOUT LEVEL = 1.2 FT (MIN. = 1.0 FT) DRY STORAGE 7. MINIMUM REQUIRED VOLUME = 67 CY x TOTAL DRAINAGE AREA (ACRES) 67 CY x 7.90 ACRES = 529.30 CY 8. TOTAL AVAILABLE BASIN VOLUME AT CREST OF RISER = 1,058.60 CY AT ELEVATION 452.40 (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 = 452.40 TOP OF DAM = 455.00 UPSTREAM TOE OF DAM = 447.00 DESIGN HIGH WATER = 453.30 BASIN SHAPE 12. LENGTH OF FLOW (L) 115 FT 2.1 EFFECTIVE WIDTH (We) 6294 SF / 115 FT IF > 2, BAFFLES ARE NOT REQUIRED [ X ] IF < 2, BAFFLES ARE REQUIRED RUNOFF 13. Q 2 = 23.79 CFS (FROM CHAPTER 5) (7.90 ACRES x 0.60 'C' X 5.02 IN/HR AT 5 MIN Tc) 14. Q 25 = 35.46 CFS (FROM CHAPTER 5) (7.90 ACRES x 0.60 'C' X 7.48 IN/HR AT 5 MIN Tc) PRINCIPAL SPILLWAY DESIGN 15. WITH EMERGENCY SPILLWAY, REQUIRED SPILLWAY CAPACITY Qp = Q2 = 23.79 CFS (RISER AND BARREL) 16. WITH EMERGENCY SPILLWAY, ASSUMED AVAILABLE HEAD (h) = 1.0 FT (USING Q 2) h = CREST OF EMERGENCY SPILLWAY ELEVATION - CREST OF RISER ELEVATION 17. RISER DIAMETER (Dr) = 36 IN. ... ACTUAL HEAD (h) 0.9 FT (FROM PLATE 3.14-8) NOTE: AVOID ORIFICE FLOW CONDITIONS RISER CALCULATED USING THE TOTAL FLOW - 23.79 CFS 18. BARREL LENGTH (1) = 45.00 FT HEAD (H) ON BARREL THROUGH EMBANKMENT = 8.0 FT (FROM PLATE 3.14-7) 19. BARREL DIAMETER = 21" - CORRUGATED METAL PIPE (CMP) (FROM PLATE 3.14-13 [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 (IN USE) 21. REQUIRED SPILLWAY CAPACITY Qe = Q25 - Qp = 11.66 CFS 22. BOTTOM WIDTH (b) = 12 FT EXIT CHANNEL SLOPE (S) = 3.70 EXIT CHANNEL MINIMUM LENGTH (x) = 36 FT (FROM TABLE 3.14-C) ANTI -SEEP COLLAR DESIGN (IN USE) 23. DEPTH OF WATER AT PRINCIPAL SPILLWAY CREST (Y) = 5.40 FT SLOPE OF UPSTREAM FACE OF EMBANKMENT (Z) = 2.00 FT SLOPE OF PRINCIPAL SPILLWAY BARREL (SID) = 0.0222 FT/FT LENGTH OF BARREL IN SATURATED ZONED (Ls) = 36 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 = 454.90 (+0.00) DESIGN HIGH WATER = 453.90 (-1.00) EMERGENCY SPILLWAY CREST = 453.30 (IN USE) (-1.60) PRINCIPAL SPILLWAY CREST / DRY STORAGE ELEVATION = 452.40 (-2.50) DEWATERING ORIFICE INVERT / WET STORAGE ELEVATION = 450.40 (-4.50) CLEANOUT ELEVATION = 449.20 ELEVATION OF UPSTREAM TOE OF DAM = 447.00 (OR EXCAVATED BOTTOM OF "WET STORAGE AREA" IF EXCAVATION WAS PERFORMED) ELEV. AREA (SF) ACC. VOL. (CF) ACC. VOL. (CY) 447.00 2,061 0 0 448.00 3,275 2,668 99 449.00 4,514 6,563 243 450.00 5,778 11,709 434 451.00 7,067 18,131 672 452.00 8,381 25,855 958 453.00 9,720 34,906 1,293 454. 00 11,085 45,308 1,678 455.00 12,474 57,088 2,114 SEDIMENT BASIN SCHEMATIC 3 4Tz ELEVATIONS DESIGN HIGH WATER (25-YR. STORM ELEV. 453.9) 1.0 M 0.5' MIN. 1.0' MIN. 67 C.Y./ AC. .... "DRY" STORAGE _ ..�• ELEV. 452.4 ....... . 67 C.Y./ AC. 'WET" STORAGE ELEV. 450.4 SEDIMENT CLEANOUT POINT ELEV. 449.2 1.5' ('WEr" STORAGE REDUCED TO 34 C.Y./ ACRE) TOP OF DAM ELEV. 454.9 CREST OF EMERGENCY T SPILLWAY ELEV. 453.3 RISER CREST ELEV. 452.4 DEWATERING DEVICE ELEV. 450.4 TOP OF DAM ELEV. 454.9 ANTI -FLOTATION CONCRETE BASE 6 DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY SOURCE: VA DSWC z E w w w V) Z E. of w z W��w� 0zWwWjw z >- (9 1= WO of U) Fw¢x wZ _J>z0WW0 v)Z)2aQzQ z U)2LLIZF� 0zof< 0 of z 0CIZ)wZ z EL Q > o J U w V5 REVISIONS ' REV DATE I COMMENT DaA� cxecxeD er 1 05/18/22 1 COUNTY COMMENTS PCM • I KnowwhlN's belolnlL Call beime 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 BOHLERP 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com 577 F;M%N YAUZ•iER Lic. No. 0402056625 1 05/18/2022 _J SHEET TITLE: SEDIMENT TRAP AND BASIN DETAILS SHEET NUMBER: C-618 REVISION 1 - 05/18/22 T A- m U 0 0 a 3 A 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 Water Source Activity DedfcatedArea(s) plan 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) ALEX MAYS 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 ALEX MAYS 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 __1Off] U) W Z Z [L Q > a < Ir U W H REVISIONS REV I DATE COMMENT 1 105/18/22 COUNTY COMMENTS • 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. 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'yam �G 558 \ c , ` , XINJNG'-PUf} LAN �D_UN/� OPME i , I - " - ; ; -- --;,;' _ - ; \```` - % I ; i ' l I, \\ ,\`: a �N ; �!D \�� /c% ;�Nr �O�, /ur,� \��r i� \ E� N _ \ \ , \ '- ' - , \ `` \ 1 1/ l l 1 1 / I , \,`\ `\ ` \S(Ll; �/ vLL ``NY/�/% p� L, , \ I , \ \ \ �n�,p.,, - � , ._'7, /i //.---" /I` \ I`.`. \ ---_ - _ "7nA///V(.'•.P///7 AP/AA/A/F�/A/�J2071/F/i1PA/F/1/T)` ./ ! ; / ! �. %\ x":,`�, 0\\,I�`. 1 � _ - `\\�`:'� ,aT.i,:e,r l\,\ �kb'i An )w,\ nUSZ. S/N� f �.T)I IZYAIf.�/PfWRAL 2 i LEGEND i � STORMWATER POINT OF INTEREST EXISTING IMPERVIOUS AREA 4.04 AC (21.5%) EXISTING PERVIOUS AREA 14.74 AC (78.5%) 60 30 15 0 60 1 "- 60, I- z a W W LU z I- W WWc72,U2U c7?W W�W � Fw¢ =�w Z)2U)v<Z mij z U) 2WZ- O z FQ zJ W0 = < 0U)D_ J d z d J OU W H m Co. REVISIONS REV DATE 7 COMMENT 1 05/18/22 1 COUNTY COMMENTS 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 TNIS 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 BOHLER// 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 � BOA 05/18/2022 `�� `S'S/ONAI. ECG SHEET TITLE: PRE DEVELOPMENT DRAINAGE AREA MAP SHEET NUMBER: C-901 REVISION 1 - 05/18/22 ell I _vil '/ ----- P f.� P -- / ` G ' i' / �pd - Lji / /',`. `,111 1 pPhpTl�O �5. `\��'/ --------- --- -- - 0 \ 1p � R� -'--- / % %'; / JPR pER Jp0 \ \ _ `e;�;;;� \�`:�.,\` ----------------------------- " _-_ _ Q0 2 /'�/�/ \\ g Oa :','//;;may/ '/ - '�';- 486 Z\:d`` o`\��\\: \�•\a1� `,` `\\�\ \\\ '/, i ____________________ _____ , / _____ 483 / ''``\ `F�'`C�� `"''' _ '� A _ ,,gy,pp. •'0"' 0.p''1 `�0 ��`�\ \ \; \\\\\ �\ \ \ \ \ \ \ \ \ pp`\,,��`,r� p /I� --------------------- "- %O= %-� __- O O. 9� \ \" I \\.` �`/ YE45TAfE`A/ I .\ -------------- :� �/� -'"�' 4g2 �' . ' 09 , \ \\ o` ;` \C�\`\\ `\\ \ ` . `\\ `\ \\ `��` `\ �`\ \\;\\ \\ ` \ \\ '-( i : •i '` ''\ \ ' i ___ _ _ ae 78`�0-38 \\r q -- - ,i \ "s.' \ 489\o `•`•% \ \ ; ` \ `` \``d \\ \ \ \ \ \`\ STM �, 1 / / - ---- _-- --- e0 "c�\\ \ , ; rt.", 01� 11X r RES NT%�iLl \`-_- - _-___----_--; �-�-��/ / ` �, O� / o STM `\\�\\\```\\\\C�c'`! ♦ \``,\ SDD ```.I`'' `__ --------_O/ �=__'-_--'-' ,ry I 1 , 0�' �' /'''.% i - S - >o- - 489 _ \ 1 /� STM 1 ///,�/ RIDV - /, E _ \ �O P014 /,,,,„ ,�� STM \ �% ' , , I , \ _ \�// /' / ✓ \ ' \' '.JI `' - ` `- - - ❑ STM ' 1 ` BUILDINGS 47 TO EX. INLET FFE=490.25 e \< \ \ \ a O A-24 \ \\ 1 I I I I 1\ \ AREA =0.51 Qe \\`,\ CN=69 1 11 •' 1 / �__ __ , ' /o \-'' \I"'I'llj CN=83 V 1 1 lal // ' /. �`.� ` A 1 A A A 1 11 I 1 / '1 , A I11 IIII 1 I It I 11 \ / a __ _ � 1❑III l I \1'1, 'IIII1,11 „1 �- BUILDING 4 /. e 1 O \I /%';%% ;�'. `` �0- 504 FFE=490.25 � \.. � � III In, \`\ li y pQ °t `��`\`\`\`\\ `\ h 1 Q Q N\\ `\\ \\ \ \`\\ \\\ \\\\ \\\ _ oo \ O - _ - 48 `\ \\\\ \\ I\\\VlII \ OF �//°G%N/A/- �- � ; --- 5or � -'l ,• 1 � \� \. ao :� P� ss ----- y`-- a�;n500 � � � i 1 , ,/�r'---" `\ DO /it � \ 14!/D,'�PLAN/}/ED,' LINJT`D (ELOPMENT%1\ I , f WC,4NX \ \ bo -- J �F �I Y `�A fl; ; ` \ J - 0 ,V\ \\ `\ . \ 1 \\ \\P \11 \\\ ' / ' ' 1 1 \ ` '"- \. , 1 '! ` `/\. ..� \ 489 \"'.�`��\�\ R/QG II` \ 1\ \ \\ \ STM J \ lL 489' i ------- _ BUILDING 1 _ FFE=487.50 i11`1'\I`\\```\\\� \"`--`�`.� __ _____ _ � //;4%/ � / R\DGE' --- e - "" ' _i / �✓ A-22 I 1 \ `\`�\\ \ �` 'i _\ F ,STM FIFE 487.50 = 0,�, POI 1 l,X, , i 482 �- ��` i AGF ' �6/?' AREA=10.57 AC \ _ l___ -1 v v v vv `` � -`I \ ' i \� 485 --` _ IA 1 -- `. �� v , �`�� \ O �,v � ' I 4 A `_- , ,GT', � �' I ' afia °� F-RtbGCES BREEDDEN p6�' �D HOWf) \ In \ 0 J /L-L��/Lr TR,(✓�T ,LJ ��1 i ', ' J WBir 1 I a8z ` • 2 1 1n 'I II 1 �Q 1 \ 11I \\ MP � 1 1 l n\ -,T . b 0 8✓!3 -41 _ P012 / 482 _ STM I 1 1 N �l I \�, ` _ STM �'J )?1: � I (L I 1 I �`' 1' 1' \ \ `G pN/ G• 111 : / \ h 1 -STM - y� J / i A 33 ST'\ A 31 - S\ A 10 (/,SE• �`yS/N(1,LE'IF7i L)' i% E-$1 ENTI/4L TO VAULT 2 1 A- AREA =4.55 4■ 3 /-'" 481 480 r , I CN=83 '-.......,e i ' a1 __ , M _ c4 - FFE=483.17 481 / _ FFE=481.00 .,�FFE ,- = 480 � - = 0 r 1 1 I I l l 1 , FFE- FFE a I '- '. FFE=479.67 -481.67 GFE=482.50 Q GFE=480.33 1 , ,', , , GFE=478.00 � GFE=482.00 -- 1 GFE-479.00 �_ _ GFE-481.00 I � l (, {I' _ _ FFE =47.FFE=482.00 0 FFE=482.50 FFE=478.33 = - - FFE=481.00 GFE=477.33 33 GFE=481.33 Al GFE=481.83 GFE=479.67 o - FFE479.00 GFE=478.33 - GFE=480.33 ';�---%/��-��%�: :iilIiii `,1�' • a7 I �II :. i4 �� II ' `l ``I\```�``�`` FFE p10 FFE =479.67 II \`. FFE=481.33 FFE=481.83 O FFE FFE= 478.33 g \ GFE=476.67 - GFE=480.67 , GFE=481.17 GFE=479.00 R11'/ - GFE=471 �4 GFE=479.67 i CN=15 '1 r ''11'` ii' I 1` FFE=476.67 FFE=480.67 °' FFE=481.17 FFE=479.00 ,, ',' FFE =477.67 \ \I FFE=479.67 GFE=480.50 GFE=478.33 1` '��% ` ' "� I;-- II'•:_ 4jd \ GFE=476.00 `GFE=480.00 GFE=477.00\ _ GFE=479.00 00 FFE FFE=476.00 I FFE=480.FFE= 479.00 ,/ , / _ '; ,\ 11 1 Inl I 'II., III `�.i,ljl�l II "j•- _-_ GFE=475.33 GFE=479.33 P GFE=479.83 GFE=477.67 GFE=476.33 \ \I GFE=478.33`�, `\1 \ \ 1 1 \ I \ r 4 , _ _ . _ \ 11 n \ I A _ _ _ 1 \ 1\ \ FFE 475 33 M FFE 479 33 1 FFE 479 83 FFE 477 67 FFE 476 33 a FFE 478 33 GFE=474.67 GFE=478.67 I ` .-.. GFE-477.00 1 I' STM GFE-479.17 ' IIII - GFE=475.67 \ \\ ` GFE=477.67 , I \ , FFE = 479.17 v" FFE = 477.00 \ FIFE FFE=478.67 ' ' I ` I ,,.,` 1 FFE=475.67 � \` FFE=477.67 GFE=474.00 ' GFE=478.00 1 ,fin �' GFE=476.33 GFE=475.00 GFE=478.50 r ` \ STM STM STM �1 P vjs _ _ 'i II I P01 1 \\` i \ `• / - / -\, `, \ 1 1 ` ',\'I'I l' I' 111 ' I ' III I / ' STM '\ i` 11 ' I `\ i ,I I X F � F , � STM \` \ ``• \` \ \ \�� ^� 1 11 TM im' 11 „IIII I , I I„I II',I 'jl' ��' ' i \` � ' II IIII 47 UNDETAINED I I ; - /J ; ,'I {',j1 I\\ / /I' I'll Ir \� POI 1 - REA=O. I I , � 1 � 474 A 87 1 , i `( STM ;\\\` \ M I' I'I'' �� 475 , , 480 _ _- ___-- 72 -- - 1 -F v ` v 0 1 1 470 _ STM STM / '-' \ \\ � \' , SOD 480 485 I. 482 I :' %--�-' , / \ \ ' ' I I' 1 '" I- 480 468 ' 1 \ \ \ ,�yy{{}' / k' 480 485 485 ✓ Llfll ', . ph/J /,_�484 LGD / ` O �( 447 '1 '1 'li 1 ` f 1�.�! , I I 1 1 - I 1 _ -,� 11 I 1 / 1 I i � _scz' - �_ � I 1 - - O' POI2 - _ - %; "; ',=; _, ' "I '11'11 , 1' '' ; %,' � / � � �'_-- -- =- � ----_ - - \ ` � \ \ ' I I 'I ,\ � ; `\`\;`, '\'1 `,1 ` \'\ '1 1 `A \- 1 � ` ` ` ----- 1 LO>r 17._ \ C ;' ; i,, \ , , , . ,,,,; 1 III I •�J 1 1 , , 1 _ � __ �-------___ - -- ---' \;" I 1 1 1 `;` \ \ \ \ \ 1 ` /�/� i (.�,.(�N/ �j�/�}��¢ � � ` `\' \`\ ` y/ _-•_x�___ '-_-tCe \ \ ' I 1 ' \ ` \ `\;\` ; \`" \ \ \` ` I ` ` L�C/1 ✓-T OOD- - '_-% `I `I _ , KE�\SYUTH -- J; ------ _ �" 1 I I\ 11'I 'I \ / I II \ -'' =__ ; j �/Yl V/7V�✓IL/�--_ �- I 1 ; ; ' ' . �:\`: `: ``' ` " : L�T` \.,\`\ 1 1 , \ \ `, \ `'`` `'`, �Q _ _�`I6'�a?; IIII IIIII \ \ _ , - ; ' "DB 'y�¢j �G: 558 ;' ; � I '1 I'I j \ :,\;�;:�; ,;�:��lN�i(�D'`:1N�l;F%N/i�Df��iuj�\\�\` � \ �`,XjNJIYG'-PHf}-�PLAN�Y�`D_ U/91� P1�EL�OPME / Lfj 1 cc y� jy c y�\,(yJj �j • V`\`\ _ . , 1slGl� {ILL``NY// i , ` \\ ,�r` _ 1/ l p� \ „` ---- _ _ "7nA///V/.`•.'P///7 /P/AA/A/F�/A/�JL'1/F/hPA/Fil/T) ./ ! / ! \. :�\\�`�:�`�\`.\.`\\\:`�`. 1 _ \�`:'��. .�. T.i,:ea l\,\ �kbuinhn )o„ert nU,SE' ,S/NiiLE �.T)Ii %I� FNT%liL i UJ z a W W W z F� WC72U2U W C7?W W�� _ W F W Q 2 W U)Z)M<<Zr rnOfaQ OZO,< z J � rn Of Q D_'Zd J 3- Q J O U W H REVISIONS REV DATE COMMENT 1 05/18/22 1 COUNTY COMMENTS 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.: - 0 PROJECT: VIRGINIA STORMWATER MANAGEMENT PLAN FOR RST RESIDENCES PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 ALBEMARLE COUNTY, VA BOHLERI LEGEND 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 POI STORMWATER POINT OF INTEREST Phone: (804) 893-8200 VA@BohlerEng.com TH p PROPOSED IMPERVIOUS AREA F�i 12.52 AC (66.7%) STORMWATER POINT OF INTEREST �►� V N YA R y PROPOSED PERVIOUS AREA Vic. No. 0402056625 6.26 AC (33.3%) OA 05/18/2022 `�� `S'3/0NAL ECG PROPOSED UNDERGROUND SHEET TITLE: STORMWATER VAULT POST •CDS HYDRODYNAMIC SEPARATOR DEVELOPMENT DRAINAGE AREA MAP SHEET NUMBER: 60 30 15 0 60 ^ ^ O ^ REVISION 1 - 05/18/22 DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet - Version 3.0 Site Compliance Summary �S N 0 U 0 0 3 A BMP Design Specifications List: 2011 Stds & Specs Site Summary Project Title: RST Development Date: 44248 Total Rainfall (in): 43 Total Disturbed Acreage: 18.78 Site Land Cover Summary Pre-ReDevelopment Land Cover (acres) A soils BSoils CSoils DSoils Totals %of Total Forest/Open (acres) 0.00 7.06 0.00 0.00 7.06 38 Managed Turf (acres) 0.00 7.68 0.00 0.00 7.68 41 Impervious Cover (acres) 0.00 1 4.04 0.00 0.00 4.04 22 28.78 100 Post-ReDevelooment Land Cover (acres) A soils B soils C Soils DSoils Totals %of Total Forest/Open (acres) 0.00 0.00 0.00 0.00 0.00 0 Managed Turf (acres) 0.00 6.26 0.00 0.00 6.26 33 Impervious Cover (acres) 0.00 12.52 0.00 0.00 22.52 67 18.78 100 Site Tv and Land Cover Nutrient Loads Final Post -Development Post- Post- Adjusted Pre- (Post-ReDevelopment ReDevelopment Development ReDevelopment & New Impervious) (New Impervious) Site Rv 0.70 0.49 0.95 0.49 Treatment Volume (fts) 47,720 18,477 29,243 18,477 TP Load (Ib/yr) 29.98 11.61 18.37 11.61 Total TP Load Reduction Required (Ib/yr) 17.22 2.32 14.90 Final Post -Development Load (Post-ReDevelopment & New Impervious) Pre- ReDevelopment TN Load (lb/yr) 1 214.49 91.14 VRRM REDEVELOPMENT CALCULATIONS Pre- Final Post -Development Post-ReDevelopment TP ReDevelopment TP Load per acre TP Load per acre Load per acre (Ib/acre/yr) (Ib/acre/yr) (lb/acre/yr) 1.13 1.60 1.13 10 YEAR EX STORM COMPUTATIONS (EXISTING CONDITION) Drainage Area A Summary Land Cover Summary Maximum %Reduction Required Below 20% Pre-ReDevelopment Load Total Runoff Volume Reduction (ft r) 0 Total TP Load Reduction Achieved (lb/yr) 12.92 Total TN Load Reduction Achieved (lb/yr) 0.00 Remaining Post Development TP Load (lb/yr) 17.06 Remaining TP Load Reduction (lb/yr) Required 4.30 A Soils Bsoils CSoils DSoils Total %of Total Forest/Open (acres) 0.00 0.00 0.00 0.00 0.00 0 Managed Turf (acres) 0.00 2.81 0.00 0.00 2.81 20 Impervious Cover (acres) 0.00 11.39 0.00 0.00 11.39 80 1 14.20 1 BMP Selections Managed Turf Impervious TP Load from BMP Treatment Untreated TP Load TP Removed TP Remaining Downstream Treatment Practice Credit Area Cover Credit Volume (ft) Upstream to Practice (Ibs) (Ib/yr) (Ib/yr) to be Employed (acres) Area (acres) Practices (Ibs) 14.a. Manufactured Treatment Device- 1.86 9.61 34,490.45 0.00 21.65 4.33 17.32 14.b. MTD - Filtering Hydrodynamic 14.b. Manufactured Treatment Device - 0.9 1.75 41,178.72 17.32 4.20 8.61 12.91 Filtering Total Impervious Cover Treated(acres) 11.39 Total Turf Area Treated (acres) 2.81 Total TP Load Reduction Achieved in D.A. 12.92 (lb/yr) Total TN Load Reduction Achieved in D.A. 0.00 (lb/yr) From Point To Point Drain. Area (acres) Runoff Coeff. C CA Inlet Time (min) Rainfall Intensity (in/hr) Q Invert Elev. Length (ft) Slope (%) Dia. (in) in Capacity (cfs) Velocity (fps) Flow Time Q / Qfull V / Vfull Vfull Remarks rev5106 Incr. F Incr. (cfs) Known (cfs) F (cfS) Upper (ft) Lower (ft) Incr. (min) F (min) 4.30 - 4.30 458.12 455.37 81.00 3.40% 18 0.013 19.41 8.52 0.16 5.16 0.22 0.78 10.98 EX-F1 EX-F2 1.62 0.40 0.65 0.65 5.00 6.62 EX-F2 EX-F3 1.30 0.55 0.72 1.37 5.16 6.58 4.74 - 9.02 455.27 448.87 95.00 6.74% 18 0.013 27.34 13.60 0.12 5.28 0.33 0.88 15.47 H-10 EX-H1 0.92 0.50 0.46 0.46 5.00 6.62 3.05 - 3.05 477.61 473.80 215.00 1.77% 15 0.013 8.62 6.34 0.57 5.57 0.35 0.90 7.03 1-10 EX-11 0.97 0.48 0.47 0.47 5.00 6.62 3.11 - 3.11 476.00 475.46 37.50 1.44% 15 0.013 7.77 5.98 0.10 5.10 0.40 0.94 6.33 EX-J1 EX-J2 0.13 0.80 0.10 0.10 5.00 6.62 0.66 - 0.66 476.74 469.28 300.00 2.49% 15 0.013 10.21 4.48 1.12 6.12 0.06 0.54 8.32 EX-J2 EX-J3 0.34 0.80 0.27 0.37 6.12 6.32 1.71 - 2.34 469.23 459.30 292.00 3.40% 15 0.013 11.94 7.27 0.67 6.79 0.20 0.75 9.73 EX-J3 EX-J4 0.35 0.85 i 0.30 0.67 6.79 6.15 i 1.84 - i 4.11 457.66 453.40 266.00 1.60% 15 0.013 8.20 6.68 10.66 7.45 0.50 i 1.00 6.68 10 YEAR STORM COMPUTATIONS (PROPOSED CONDITION) From Point To Point Drain. Area (acres) Runoff Coeff. C CA Inlet Time (min) Rainfall Intensity (in/hr) Q Invert Elev. Length (ft) Slope ( % ) Dial. (in) n Capacity (cfs) Velocity (fps) Flow Time Q / Qfull V / Vfull Vfull Remarks rev5/06 Incr. F Incr. (cfs) Known (cfs) F (cfs) Upper (ft) Lower (ft) Incr. (min) F (min) EX-F1 EX-F2 0.56 0.35 0.20 0.20 5.00 6.62 1.32 18.03 19.35 458.12 455.37 81.00 3.40% 18 0.013 19.41 12.52 0.11 5.11 1.00 1.14 10.98 EX-F2 F-20 1.16 0.50 0.58 0.78 5.11 6.59 3.82 - 23.17 455.27 454.03 20.00 6.20°k 18 0.013 26.23 16.71 0.02 5.13 0.88 1.13 14.84 F-20 EX-F3 0.15 0.90 0.14 0.92 5.13 6.59 0.92 - 24.09 453.93 448.87 75.00 6.75% 18 0.013 27.36 17.43 0.07 5.20 0.88 1.13 15.48 H-10 EX-H1 0.90 0.60 0.54 0.54 5.00 6.62 3.57 - 3.57 475.10 473.80 73.50 1.77% 15 0.013 8.61 6.63 0.18 5.18 0.41 0.94 7.02 1-10 EX-11 0.97 0.52 0.50 0.50 5.00 6.62 3.31 - 3.31 475.81 475.46 24.00 1.46% 15 0.013 7.82 6.02 0.07 5.07 0.42 0.94 6.37 EX-J1 EX-J2 0.13 0.80 0.10 0.10 5.00 6.62 0.66 - 0.66 476.74 469.28 300.00 2.49% 15 0.013 10.21 4.48 1.12 6.12 0.06 0.54 8.32 EX-J2 EX-J3 0.34 0.82 0.28 0.38 6.12 6.32 1.77 - 2.40 469.23 459.30 292.00 3.40% 15 0.013 11.94 7.55 0.64 6.76 0.20 0.78 9.73 EX-J3 EX-)4 0.35 0.85 0.30 0.68 6.76 6.16 1.85 - 4.19 457.66 453.40 266.00 1.60% 15 0.013 8.20 6.68 0.66 7.42 0.51 1.00 6.68 EX-KI EX -K2 0.30 0.30 0.09 0.09 5.00 6.62 0.60 - 0.60 460.18 460.00 15.00 1.20% 18 0.013 11.54 3.23 0.08 5.08 0.05 0.50 6.53 2 YEAR INLET COMPUTATIONS (EXISTING CONDITION) NUTRIENT CREDIT AVAILABILITY LETTER Rivanna River Nutrient Bank October 6, 2021 Bottler Engineering Attention Pilot Moore, Senior Design Engineer Certificate No..lames-039 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 fi he istance please feel free to contact our office. Hotel Street Capi LC, Bank Sponsor By Its Mana 'I ,IarRes ss U Nutrient Offset Trading Bank, 31 Garrett Street, Warrenton, Virginia 20186 STORMWATER NARRATIVE 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 18.78 ACRES. THERE WILL BE APPROXIMATELY 12.52 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 CDS HYDRODYNAMIC SEPARATOR (APPROVED BY DEQ FOR 20% TP REMOVAL EFFICIENCY), AND BY PURCHASING 4.3 POUNDS OF NUTRIENT CREDITS 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 8.80 CFS 7.32 CFS 7.31 CFS 2-YEAR 13.45 CFS 11.31 CFS 11.13 CFS 10-YEAR 26.12 CFS 24.90 CFS 23.99 CFS POST -DEVELOPMENT FLOWS: POI P012 P013 1-YEAR 1.65 CFS 3.89 CFS 2.43 CFS 2-YEAR 3.00 CFS 5.02 CFS 3.84 CFS 10-YEAR 28.93 CFS 22.45 CFS 8.69 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 17.22 LB/YEAR 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 25% 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 DC W J X O m C7 Z W W LLI U) Z W 0 ZjZU)U Z W 1--U W (7ZW WU)5:W Zr(Dt=LuIYU) F W Q E W Z >Z0woo CD U)72QQZQ Z U)2 W ZFF 0Zof< 0 CIL J Of 0 U) W Z Z tl Q > o < of 0 W I-_ co REVISIONS REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS ia 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 THI$ 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. Inlet DA C I Q Qb Qt S Sx n T W Sw On Grade Inlets Only Sag Inlets Only Remarks No. Type Length (ft) Drain Area (acres) Runoff Coeff- icient Inten -Sity (in/hr) Incr. Flow (cfs) Carry -over Flow (cfs) Accum. Flow (cis) Gutter Slope (%) Pvmt Cross Slope (%) Spread On Grade (ft) Gutter Width (ft) W / T Gutter Cross Slope (%) Sw / Sx Eo (App. 9C-8) a (in) S'w = a / (12W) (%) Se=Sx + S'w (Eo) (%) Lt,Comp. Length (9C-17) (ft) L,Spec -ified Length (ft) L / Lt E Qi Qb Down Qi d h (ft) d / h Ts rev5/06 Eff. (9C-18) Int'x Flow (cfs) Byp. Flow (cfs) Stream Int'x Flow (cfs) Depth (ft) Spread In Sag (ft) Stir. H-10 Curb DI-313 8.00 0.92 0.50 5.02 2.31 0.00 2.31 1.00 2.00 0.02 8.41 2.00 0.24 8.33 4.17 0.66 3.52 14.66 11.74 9.63 8.00 0.83 0.96 2.22 0.09 0.00 0.00 0.00 0.00 0.00 0.00 On Grade 1-10 Curb DI-313 8.00 0.97 0.48 5.02 2.34 0.00 2.34 1.00 2.00 0.02 8.46 2.00 0.24 8.33 4.17 0.66 3.52 14.66 11.69 9.70 8.00 0.83 0.96 2.24 0.10 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J1 Ex. Curb DI-313 8.00 0.13 0.80 5.02 0.52 0.00 0.52 1.00 2.00 0.02 3.07 2.00 0.65 8.33 4.17 0.99 3.52 14.66 16.48 4.21 8.00 1.90 1.00 0.52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J2 Ex. Curb DI-313 8.00 0.34 0.80 5.02 1.37 0.00 1.37 3.20 2.00 0.02 4.33 2.00 0.46 8.33 4.17 0.93 3.52 14.66 15.66 9.20 8.00 0.87 0.97 1.33 0.04 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J3 Ex. Curb DI-313 8.00 0.35 0.85 5.02 1.49 0.00 1.49 4.00 2.00 0.02 4.26 2.00 0.47 8.33 4.17 0.94 3.52 14.66 15.72 10.19 8.00 0.78 0.94 1.40 0.09 0.00 0.00 0.00 0.00 0.00 0.00 On Grade 2 YEAR INLET COMPUTATIONS (PROPOSED CONDITION) Inlet DA C I Q Qb Qt S Sx n T W Sw On Grade Inlets Only Sag Inlets Only Remarks No. Type Length (ft) Drain Area (acres) Runoff Coeff- icient Inten -sity (in/hr) Incr. Flow (cfs) Carry -over Flow (cfs) Accum. Flow (cfs) Gutter Slope (%) Pvmt Cross Slope (%) Spread On Grade (ft) Gutter Width (ft) W / T Gutter Cross Slope (%) Sw / Sx Eo (App. 9C-8) a (in) S'w = a / (12W) (%) Se=Sx +S'w (Eo) (%) Lt,Comp. Length (9C-17) (ft) L,Spec -ified Length (ft) L / Lt E Qi Qb Down Qi d h (ft) d / h Ts rev5106 Eff. (9C-18) Int'x Flow (cfs) Byp. Flow (cfs) Stream Irl Flow (cfs) Depth (ft) Spread In Sag (ft) Str. H-10 Curb DI-313 8.00 0.90 0.60 5.02 2.71 0.00 2.71 1.00 2.00 0.02 9.09 2.00 0.22 8.33 4.17 0.63 3.52 14.66 11.17 10.61 8.00 0.75 0.92 2.49 0.22 0.00 0.00 0.00 0.00 0.00 0.00 On Grade 1-10 Curb DI-313 8.00 0.97 0.52 5.02 2.53 0.00 2.53 1.00 2.00 0.02 8.80 2.00 0.23 8.33 4.17 0.64 3.52 14.66 11.41 10.18 8.00 0.79 0.94 2.37 0.16 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J1 Ex. Curb DI-313 8.00 0.13 0.80 5.02 0.52 0.00 0.52 1.00 2.00 0.02 3.07 2.00 0.65 8.33 4.17 0.99 3.52 14.66 16.48 4.21 8.00 1.90 1.00 0.52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J2 Ex. Curb DI-313 8.00 0.34 0.82 5.02 1.40 0.00 1.40 3.20 2.00 0.02 4.42 2.00 0.45 8.33 4.17 0.93 3.52 14.66 15.59 9.33 8.00 0.86 0.97 1.36 0.04 0.00 0.00 0.00 0.00 0.00 0.00 On Grade EX-J3 Ex. Curb DI-313 8.00 0.35 0.85 5.02 1.49 0.00 1.49 4.00 2.00 0.02 4.26 2.00 0.47 8.33 4.17 0.94 3.52 14.66 15.72 10.19 8.00 0.78 0.94 1.40 0.09 0.00 0.00 0.00 0.00 0.00 0.00 On Grade F-20 Curb DI-3C 8.00 0.15 0.90 5.02 0.68 0.00 0.68 2.00 0.02 0.00 2.00 8.33 3.52 0.00 0.00 0.00 0.68 0.09 0.46 0.19 1.04 In Sag Eli ERG Il BALA ` CE Site: RST Residences County: Albemarle Storm Event: 1 Year 24-Hour Rainfall Depth: 3.0" (PerNOAA Atlas 14) Point of Interest ID 1 1 2 1 3 1 Comments Pre -Development Q, Flow (cfs) 8.80 7.32 7.31 CN, Curve Number 71 73 72 RV, Runoff Depth (in) 0.76 0.86 0.81 RV per Tables 11-C-27,11-C- 30,11-C-32,11 C 38 Drainage Area, Ac 6.95 6.34 5.90 RV, Runoff Volume (Ac-In) 5.28 5.44 4.77 Post -Development Q, Flow (cfs) 1.59 3.97 2.43 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 11.44 5.53 2.22 RV, Runoff Volume 21.73 7.63 1.49 Energy Balance (EB) Q, Post-Dev (cfs) 1.65 3.89 2.43 I.F.*Qpre *RV pre 1.71 4.17 7.31 Q, Post-Dev Allowable (cfs) 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 05/18/2022 SHEET TITLE: STORMWATER COMPLIANCE SHEET SHEET NUMBER: C-903 REVISION 1 - 05/18/22 DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet - Version 3.0 02011 BMP Standards and Specifications L7 2013 Draft BMP Standards and Specifications norm Project Name: RST Development data input cells Date: 7/21/2021 constant values Linear Development Project? No calculation cells Site Information Post -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) --)18.78 Check: BMP Design Spedfloo Ions list. 2011 Slide R Specs ------ Maximum reduction required. Llnearproject7 No The site's net increase in impervious cover (acres) is: Land cover areas entered correctly? Post -Development TP Load Reduction for Site lib® Total disturbed area entered? Pre-ReDevelopment Land Cover (acres) A Sons BSolis Csails DSoils Totals Forest/Open space (aces) - undisturbed rest/open space 7.06 ] 06 Managed Turf (aces) - disturbed, graded for yards or other turf to be mowed/managed 7.68 7.68 Impervious Cover (acres) 4.04 4.04 18,78 Post -Development Land Cover (acres) A Sons B Soils C Solis D Soils Totals Forest/Open Spam (aces) - undisturbed, protected forest/open space or referenced land 0.00 Managed Turf hares)- disturbed, graded for yards or other turf to be mowed/managed 6.26 6.26 Impervious Cover (area) 12.52 12.52 Area Check OK. OK. OK. OR. 18.78 Constants Runoff Coefflc]erns (Rv) Annual Rainfall(inches) 43 ASolls Bs01b CSolis 050116 Target Rainfall Event (Inches) 1.00 FormolOpen Space 0.02 0.03 0.04 0.05 Total Phosphorus TP) EMC(mg/Q 0.26 ManagedTurt 0.15 0.20 0.22 0.25 Total Nitrogen (TN)EMD(mg/L) 1.86 Impervious Cover 0.95 0.95 0.95 0.95 Target TP Load Alb/acre/yr) 0.41 Pj(unitless correction factor) 0.90 LAND COVER SUMMARY -- PRE -REDEVELOPMENT• COVER SUMMARY POST DEVELOPMENT Land Cover Summary -Pre Land CaverSummary-Post(Final) Land CoverSummairy~ LadQaw umlllaryihM Pre-ReDevelopment Listed Adjusted' Past Rapes. &New Impervious Pont-ReOevelapnlerK P0G-OeMapnsdnt NeRrlmperWeua Forest/Open Space Cover (acres) 7.06 0.00 Finast/Open Space 0.00 Forest/Open Spam 0.00 Cover (acres) Cover (acres) Weighted Rv(ferest) 0.03 0.00 Weighted Rv(forest) 0.00 Weighted Rv(forest) 0.00 %Forest 38% 0% %Forest 0% %Forest 0% Managed Turf Cover (acres) 7.68 6.26 Managed Turf Cover 626 Managed Turf Cover 6.26 (acres) laces) Weighted Rv(tur0 0.20 0.20 Weighted By (turf) 0.20 Weighted By (turf) 0.20 %Managed Turf 41% 6 %Managed Turf 33% %Managed Turf 61% Impervious Cover (acres) 4.04 4.04 ImpervkWS Cover (acres) 12.52 ReDev. Impervious 4'M New Impervious Cover Cover(acres) (acres) ROmpervlous) 0.95 0.95 110impervlous) 0.95 Rv(lmpmlous) 0.95 RY(Imperdaw) %Impervious 22% 39% %Impervious 67% %Impervious 39% Total Site Area(acres) 18.78 20.30 Final Site Area (acres) 18.78 Total Riclev. sSteAnda 10.30 Site A. 0.30 0.49 Final Post Dev Site Rix, 0.70 ReOev site w 0.49 Treatment Volume and Nutrient Load Treatment Volume and Nutrient Load Pre-ReDevelopmem Treatment Volume Final Port -Development Post-ReDwelopment Post -Development (acre-k) 0.4655 0.4242 Treatment Volume 1.0955 1MmeIRVolume 0.4242 Treatment volume 0.6713 (ace-R) (eve-ft) Post-ReDevelopmem (acreit) Final Port -Development Post -Development Pre-ReDevelopmem Treatment Volume 20,276 18,477 TradmeMVolume 47,720 Treatment Volume 18,477 Treatment Volume (cubic 29,243 (cubic feet) (mbic feet) (wbich at) post-ReDevelopmem feet) Post-Development post -Development TP load Pre-ReDevelopment TP Load Final Post- (lb/yr) 12.74 11.61 Development TP Load 29.911 Load (TP) 11.61 18.37 (Ib/yr) (IbI Post-ReDevelopment TP Pre-ReDevelopment TP Load Per ace Final Post-Developmeal Qb/acre/yr) 0.68 1.13 Load Par acre Load per acre 1.13 (Iblaceltt) (lb/acre/w) Baseline TP Load (11ahn) Max. Reduction Required (Ohio/acre/yr applied to pre -redevelopment area excluding pervious 4.22 (Below pre- 20% land proposed for new Impervious coverl ReDevelopment Wad) TP Load Reduction sAdlrated Wild CoLarSummary. TP Load Reduction Required for Pre ReOevebpmentbMroverminuspervious MrMcovergarecf/apenspamormarlaged 2.32 Required for New 14.90 turf)ocreogeprapmadfarmwimpem cover. Redeveloped Area Impervious Area (Ib/yr) (II /yr) Adusted total acreage Is consistent with Port-ReDranopment aceage (minus acreage of newimpen ious cover). Column I shows load reduction re#urfementfor new impervious cover (band on new development load limit, 0.41 Ibslacrelyear). Post -Development Requirement for Site Area TP Load Reduction Required (Ib/yr) 17.22 Nitrogen Loads (Informational Purposes Only) Final Post -Development TN Load Pre-ReDevelopment TN Load(lb/yr) 91.14 (Post-ReDevelopment& Newlmperviousl 214.49 ro/ l Drainage Area A DminmEe Arm A Land Cover [acres] ASoils 0Soils CSells 0Sells Totals Land Cover Rv Forest/Open Spam(acres) O.DD 0.00 Managed Turf (acres) 2.81 2.81 0.20 Impervious Cover (acres) 11.39 11.39 0.95 Total 14.20 Stormwater Best Manaeement Practices (RR = Runoff Reduction) Total Phosphorus Available for Removal in D.A. A (lb/yr) 25.96 Post Development Treatment Volume in D.A. A (its) 41,318 -Select from droodown fists - Runoff Managed Impervious Volume from Runoff Remaining Total BMP Phosphorus Phosphorus Load Untreated Phosphorus Remaining Practice Reduction Turf Credit [aver Credit Upstream Runoff Treatment Removal from Upstream Phosphorus Load Removed By Phosphorus Load Downstream Practice to be Credit (%) Area (acres) a a Reduction (ft) Area (acres[ Practice (k) s Volume (k) a Volume (k) Efficiency (%) Practices (Ibl to Practice (It.) Practice (lb) (Ib) Employed 1.a. Vegetated Rpof M (SM 0) 45 0 0 0 u o.W 0.00 um l.b. Vegetated Roof V (Spec #5) 60 0 0 0 0 0.00 ow 0.00 2. Rooftop Disconnection (RR) 2.a. Ample Diswnneed,n WAAl sea. (SWILL) So 0 0 0 o 0 0.00 0.00 D.ao 0.00 2.b. Ample Discannectien to C/D Sells 25 0 0 0 0 0 0.00 0.00 0.00 0.00 (Spec#0 2.C. TO Sell Amended! Flke Path as per 50 0 0 D 0 0 0.00 o.00 0.00 ON spea#atlom (edmng C/o sells) (Spec #4) 2.d. To Dry Well or French Drain #1, 50 0 0 0 0 25 0.00 0.00 0.00 0.00 Micro-Infi ration #1(Spec M) 2.c To Dry Well or French Dodd 42, 90 0 0 0 0 25 0.00 0.00 0.00 0.00 Micro -Infiltration #2 (SW M) 2£ To gain Garden an, 40 0 0 0 0 25 0.00 0.00 0.00 0.00 Mlmo-Bioretention #1(Spec 01 24. To Rain Gahm go, 80 0 0 0 0 50 0.00 0.00 am am Mlao-Biaretention#2(Spot 49) 2.1h, To Rainwater Harvesting(Spec #6)1 0 0 0 0 0 0 0.00 000 0.00 0.D0 2.1. To Stonnwatm Planter, 40 0 0 0 0 25 0.00 0.00 0.00 Urban0a0 Bloretentlon (Spec N, Appendix A) 4. Grass Channel (RR) 4.a. Glass Channel Aid Soils (Spec #3) 20 0 0 0 o 15 0.00 0.00 0.00 0.D0 4b. Grass Channel C/o Soils (SW #31 10 0 0 0 O 15 0.00 0.00 0.00 0.00 4.c. Gres Channel with Comport Amended Sells 30 0 0 0 0 IS 0.00 im 0.00 0.D0 as per specs (see Spec #4) 6.a. aretention pl or Mlm-neretelRlan Blur Urban m mitemion (Spec "I 40 0 0 0 0 25 0.00 0.00 im 0.D0 6.6. Bieretrmion #2 ar MiapBieratemien p2 (Spec#9) 80 0 0 0 0 50 0.00 0.00 0.00 0.00 7. Infiltration (RR) ).a.lnnkmtion#1(Spx 0) 50 0 0 0 o 25 0.00 0.00 ow 0.00 7.b. Infatuation #2(SW 4R) 90 d 0 0 0 75 (I ODO (I 000 8. Extended Detention Pond (RR) S.a. ED #1 (Spec #15) 0 0 0 0 0 15 am 0.00 am 0.00 B.b. ED#2(Spec#15) IS 0 0 0 0 15 0.00 0.00 ow 0.00 Filter/Open 9.a. Steetllow to Conservation Area, Ala Sails (SWILL) 75 0 0 0 0 0 am 0.00 0.00 0.00 9.b. Shedfim to conservation Arm, C/O Soil (Spite Q) 50 0 0 0 0 0 0.00 0.00 0.00 0.00 9.1. shestflow to Vegetated Filter Strip, A Soils or Compost AmendeM B/C/D soils (Spec #2 & #4) 50 0 0 0 a 0 0.00 0.00 0.00 0.00 TOTAL IMPERVIOUS COVER TREATED(ac) 0.00 AREA CHECK: OK. TOTAL MANAGED TURF AREA TREATED(ac) 0.00 AREA CHECK: OK. TOTAL RUNOFF REDUCTION IN D.A. A (its) 0 TOTAL PHOSPHORUS AVAILABLE FOR REMOVAL IN D.A. A(Ib/yr) 25.96 TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. A (Ib/yr) 0.00 TOTAL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN D.A. A (lb/yr) 25.96 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS 0. Wet Stmile in. RR) 10.0. Wet Swale#l(Spec#11) o 0 0 0 0 20 0,00 00o am 0.00 10.6. We Swale #2 (Spec #11) 0 0 0 0 0 40 0,00 0.00 0.00 0.00 1. Filtering Practices (no RR) Ila.nitering Prattle (Spec#12) 0 0 0 0 0 60 0.00 0.00 0.00 0.00 11.6. Filtering Practice#2 ISM#12) 0 0 0 0 0 65 coo 0.00 0.00 0.00 12. Constructed Weiland (no RR) 12.a.ConstmcteAWatiand#1(Spec#13) 0 0 0 0 0 50 am 0.00 100 0.00 12.1b. Cannmcted WHlend#2(Spec#13) 0 0 0 0 0 75 0.00 0.00 OAO 0.00 13. Wvt Funds (no FIR) 13.a. We Ford #1(Spec CA) 0 0 0 0 o 50 am o.00 0.00 0.00 Ten, MTD- Filtering 131. We Pond m(Coastal Plan) (Spec Cal 0 0 0 0 0 45 0.00 0.00 0.00 0.00 13.c We Pond In(Spec trial 0 0 0 0 0 75 am 0.00 0.00 0.00 13A. Wet Pond #2([vestal Plain) (Spe#14) D 0 0 0 0 65 am 0.00 0.00 0.00 14. Manufactured Treatment Devices (no RR) 14.a. Manufactured Treatment LieArp Hydrodyn enlc 0 1.77 9.45 0 0 33,873 33,873 20 0.00 21.26 4.25 17.01 14.b. MID - Filtering 14.1b. Manufactured Trmtment Devise-Flltering 0 1.04 1.94 33,873 0 41,318 41,318 40 17.01 4.67 8.67 13.01 14c. Manufactured Tleatmem Device -Generic D 0 0 0 0 50 0.00 0.00 0.00 000 TOTAL IMPERVIOUS COVER TREATED(ac) 11.39 AREA CHECK: OR. TOTAL MANIAS E D TURF AREA TREATED(ac) 1 2.81 1 AREA CHECK: OK. TOTAL PHOSPHORUS REMOVAL REQUIRED ON SITE lb/yr) 17.22 TOTAL PH05MORUS AVAILABLE FOR REMOVAL IN D.A. A (Ib/yr) 25.96 TOTAL PHOSPHORUS REMOVED WITHOUT RUNOFF REDUCTION PRACTICES IN D.A. A (Ib/yr) 12.92 TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. A (lb/yr) 0.00 TOTAL PHOSPHORUS LOAD REDUCTION ACHIEVED IN D.A. A (lb/yr) 12.92 TOTAL PHOSPHORUS REMAINING AFTER APPLYING BMP LOAD REDUCTIONS IN D.A. A (Ib/yr) 13.04 WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS V NITROGEN REMOVED WITH RUNOFF REDUCTION PRACTICES IN DA. A (Ibilyr) 0.00 NITROGEN REMOVED WITHOUT RUNOFF REDUCTION PRACTICESIN DA. A[Ib/yr) 0.00 TOTAL NITROGEN REMOVED IN DA. A llb/yr) 0.00 Nitrogen Nitrogen Load Untreated Nitrogen Remaining Removal from Upstream Nitrogen Load Removed By Nitrogen Load Efficiency (%) Practices (Ibs) to Practice 0bs) Practice (Ibs) (Ibs) u o.00 0.W 0.00 0 0.00 0.00 0.00 2. Rooftop. 0 0.00 0.00 0.00 o.00 0 0.00 0.00 0.00 0.00 0 a.o0 am oDa 010 15 0.00 000 0.00 0 )0 15 0.00 0.00 0.00 0.00 40 0.00 0.00 0.00 0.00 60 0.00 aw 0.00 0.00 0 0.00 0.00 0.00 0.00 40 0.00 0.00 0,00 om 3. Permeable Pavement (RR) 4. Grass Channel 20 (RR) 0.00 0.00 0.00 0.00 2D coo ON 0.00 O.00 20 0.00 0.00 0.00 0.00 r 25 0.00 0.W 0.00 0.00 35 am 0.00 0.00 0.00 40 0.00 0.W 0.W 0.00 60 0.00 0.00 0.00 0.00 7. Infiltration (RR) 15 0.00 0.00 0.00 Lim 15 0,00 Man 0.00 0.00 8. Extended Detention Pond (RR) 9. Sheetflow to Filter/Open Space (RR) TOTAL RUNOFF REDUCTION IN D.A. A (fts) N ITROG EN R E MOVED WITH RU HOFF REDUCTION PRACTICES IN D.A. A(I*r) 0.00 SEE WATER QUALITY COMPLIANCE TAB FOR SITE CALCULATIONS (Information Only! 10. Wet Swale (Coastal Plain) (no RR) 11. Filtering Practices (no RR) 45 ®®®® 12. Constructed Wetland (no RR) 13. Wet Ponds ® (no RR) r rr ®®® 14. Manufactured 0.00 BMP (no RR) 152.08 0.00 152.08 0 7o0 15208 33.43 0.00 385.51 ODD ON o.D0 O.Oo J 0 m (D z E W W W N Z (L/ O ZDZWO Z W H Ur W > Ur Z L U W 0 j W z >- (D 0 E � F W Q 2 W Z _J>Z0UJW0 Do 2<10ZQ Z U)2 W Z -I- 0of zQQa~O Q J Of 0 U) W Z Z IL Q > d J FY U W H REVISIONS REV I DATE I COMMENT 1 105/18/22 1 COUNTY COMMENTS I 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.: 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 TH F;M%N YAIJ ER Lic. No. 0402056625 05/18/2022 SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-909 REVISION 1 - 05/18/22 1 YEAR STORM HYDROGRAPHS Hydrograph Report 1 Hydrograph Report 2 Hydrograph Report 3 Hydrograph Report 4 Hydrograph Report 7 Hydrafiow Hydrographs Extension for Autede;WCM13M by Autodurk. Inc. v2020 Thursday, 03 13 12022 Hyd. No. 1 Pre-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 8.802 offs Storm frequency q cY = 1 Time to peak = 718 min Time interval = 2 min min Hyd. volume = 17,985 tuft Drainage area = 6.950 ac Curve number = 71e Basin Slope = 0.0 °h Hydraulic length = 0lt To method = User Time of conic. (To) = 6.50 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Hydrafiow Hydrogrophs Extension for Autcdesh®CMI 3M by Autodesk, Inc. J2020 Thureds, 03 13 12022 Hyd. No. 3 Post-Dev to POI #1 Hydrograph type = SCS Runoff Peak discharge = 35.77 ds Storm frequency q cY = 1 Time to peak = 716 min Time interval = 2 min min Hyd. volume = 74,503 tuft Drainage area = 10.570 ac Curve number = 91e Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of oonc. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 • Composfie (AmaICN)=ID.410 x99) • (2.800 x60) • (2.740 x691] / 6.1150 • Compne8e (ArwICN)=1(8.=x 9e) • (0.300 xeo) • (1.610 x616 / 10.570 Pre-Dev POI #1 Post-Dev to POI #1 Q (cfs) Q (lots) Q (Cls) Hyd. No. 1 -- 1 Year Hyd. No. 3 - 1 Year 10.00 8.00 6.00 4.00 2.00 0 00 10.00 40.00 8.00 30.00 6.00 20.00 4.00 10.00 2.00 000 000 Hydrafiow Hydrogmphs Extension for Autcdeske CMI 3M by Autod rsk, Inc. J2020 Thissi 03 / 3/ 211Y2 Hyd. No. 4 Post-Dev Undetained to POI #1 Hydrograph type = SCS Runoff Peak discharge = 0.472 ds Storm frequency = 1 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 1,179 cult n Drainage area 9 = 0.870 ac Curve number = 62e Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of oonc. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Stone duration = 24 hrs Shape factor = 484 Hydrafiow Hydrogrephs Extension for Autcderl CMI 3M by Autedesk, Inc. Q020 Thusi 03 13 1 Z= Hyd. No. 5 Post-Dev to System 1 Hydrograph type = Reservoir Peak discharge = 1.340 offs Storm frequency = 1 yre Time to peak = 808 min Time interval = 2 min Hyd. volume = 74,311 cult Inflow hyd. No. = 3 - Post-Dev to POI #1 Max. Elevation = 467.64 it Reservoir name = System 1 Max Storage = 42,979 cult Stomps Indicted. meem usetl. • Compoa6e (AreelCN)=I(0.020 x 99) • (01 x611110.870 Post-0ev Undetalned to POI #1 Q (lots) Q (Cls) Q (1 Q (Cls) Hyd. No.4-- 1 Year 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 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 System 1 Hyd. No. 5 - 1 Year Hydrafiow Hydrogrophs Extension for Aumd iCM13M by Autodssk, Ioc. v2020 Hyd. No. 7 Total Post-Dev POI #1 Hydrograph type = Combine Storm frequency = 1 yrs Time interval = 2 min Inflow hY ds. = 4,5 Q (lots) Q (Cls) 40.00 2.00 30.00 20.00 1.00 10.00 000 000 - 000 0 120 240 360 480 600 720 840 NO 1080 1200 1320 1440 15M 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 2400 - Hyd No. 1 Time (min) _ Hyd No. 3 Time (min) _ Hyd No 4 Time (min) _ Hyd No. 5 - Hyd No. 3 ® Total storage used = 42,979 cult Time (min) Hydrograph Report 6 Hydrograph Report 6 Hydrograph Report 9 Hydrograph Report 10 Hydreft. HydmOmphs Extension for Autodesel Civ l3M by Autodssk, Inc. Q020 Thuredey. 03131 21Y22 Hyd. No. 6 Pre-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 7.320 ds Storm frequency = 1 yre Time to peak = 720 min Time interval = 2 min Hyd. volume = 17,500 cult Drainage area = 6.340 ac Curve number = 71e Basin Slope = 0.0 % Hydraulic length = 0 ft To method = TR55 Time of conic. (To) = 8.70 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Compcafie (AmeICN)= In.220 x98) ♦ (2.850 x80) • (2230 xset / 6.3x0 Pre-Dev POI #2 Q (ds) Hyd. No. 6 -- 1 Year 8.00 6.00 4.00 2.00 0 00 5 N 0 m U F 0 O Y 3 A Hydrafiow Hydrogmphs Extension for Autodei Civ113M by Autodesk. Inc. 4020 Thissi 03 / 3I2= Hyd. No. 8 Post-Dev to POI #2 Hydrograph type = SCS Runoff Peak discharge = 11.09 ds Storm frequency = 1 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 22,399 cult Drainage area = 4.550 ac Curve number = 83e Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of conic. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 Hydrafiow Hydrogtaphs Extension for Autodesk l I3D®by Autodesk,Inc.J2020 Thissi 03/ 3/21122 Hyd. No. 9 Post-Dev Undetained to POI #2 Hydrograph type = SCS Runoff Peak discharge = 1.598 ds Storm frequency = 1 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 3,204 cult Drainage area = 0.980 ac Curve number = 75e Basin Slope = 0.0 % Hydraulic length = 0 ft To method = User Time of conic. (To) = 5.00 min Total precip. = 3.00 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 • Compcafie (AmeICN)= I12.74o x98) • (0.440 x80) • (1.370 x 613 /4.550 • Ccmpoefie (AmeICN)=k0.370 x96) ♦ (0.610 xetll 1 oW Post-Dev to POI #2 Post-0ev Undetained to POI 92 Q (1 Q (cla) Hyd. No. 8 -- 1 Year Q (i Q (ds) 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 Hydrafiow Hydrogmphs Extension for Autodesel CivI 3M by Autodesk, Inc. Q020 Thusi 03 / 3121122 Hyd. No. 10 Post-Dev to System 2 Hydrograph type = Reservoir Peak discharge = 2.595 ds Storm frequency = 1 yrs Time to peak = 724 min Time interval = 2 min Hyd. volume = 22,399 cult Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 462.38 ft Reservoir name = System 2 Max. Storage = 6,759 cult Storage Indication metlp! used. Thursday, 03/3/2022 Peak discharge = 1.653 ore Time to peak = 720 min Hyd. volume = 75,490 cult Contrib. drain. area = 0.870 ac 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 2400 - Hyd No. 7 - Hyd No. 4 - Hyd No. 5 Time (min) 12 Hydrograph Report Hydrafiow Hydrogtaphs Extension for A Wei Civ l3M by Autodesk, Inc. Q020 Thursday. 031312022 Hyd. No. 11 Total Post-Dev POI #2 Hydrograph type = Combine Peak discharge = 3.894 ds Storm frequency = 1 yre Time to peak = 718 min Time interval = 2 min Hyd. volume = 25,603 cult Inflow hyds. = 9, 10 Cort ib. drain. area = 0.980 ac Post0ev to System 2 Q (i Q (oft)) Hyd. No. 10 -1 Year 0 () o () 12.00 4.00 10.00 3.00 8.00 6.00 2.00 4.00 1.00 2.00 Total Post-Dev POI #2 Hyd. No. 11 - 1 Year Q (Cfs) 4.00 3.00 2.00 1.00 0.00 0.00 - - 0.00 0 120 240 360 480 600 720 840 960 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 1560 0 120 240 360 400 600 720 840 960 1080 1200 1320 1440 1560 0 120 240 300 480 600 720 840 960 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 = 6,759 tuft - Hyd No. -Hyd No. 9 -Hyd No. 10 2.00 12.00 10.00 8.00 1.00 6.00 4.00 2.00 000 000 Hydrograph Report 13 14 Hydrograph Report z II DJ UJ z w z FII W wZwwU)� P: W Q 2 W U)=)2<<Z (n��QQZ O0<CL 0<(D0 U) J Cn � Z � O LEIQ � z o_ XJ L z Q J O O W F REVISIONS REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS 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 AND10R 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 Hydrogni,i Edeneion forA eskOO Civil 30e by Mbeffeek, Inc. J2020 Thurstlay, 03/3/2022 Hydri Hydrogtaphe E,deneion fdrA°t°deskO Civil 3M by Autodeek, Inc. J2020 Thursday, 03/3/2022 Hyd. No. 12 Hyd. No. 13 O H L E R �� Pre-Dev POI #3 Post-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 7.314 ds Hydrograph type = SCS Runoff Peak discharge = 2.430 dfs Storm frequency = 1 yrs Time to peak = 720 min Stone frequency = 1 yrs Time to peak = 718 min ARBORETUM PKWY, SUITE 360 Time interval = 2 min Hyd. volume = 17,307cult Time interval = 2 min Hyd. volume = 5,059cuft rRICHMOND, VIRGINIA 23236 Drainage area = 5.900 ac Curve number = 72- Drainage area = 2.220 ac Curve number = 69" Basin Slope = 0.0 % Hydraulic length = Oft Basin Slope = 0.0 % Hydraulic length = Oft 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 him Distribution Shape factor = Type II = 484 Total precip. Stone duration = 3.00 in = 24 hrs Distribution Shape factor = Type II = 484 VA@BohlerEng.com •Compdsfie(ArwICN) xx In.190 x 96)•(2.110 x 61 (2.610 x 81 5.900 •Composse(AreaICN)• 1(0.450 x 96)•(1.7m x 61))/2= j(..pLTH Aw Pre-Dev POI #3 Q lots) Hyd. No. 12 -1 Year 8.00 6.00 4.00 2.00 PostZev POI #3 Q Q We) Hyd. No. 13 -1 Year 8.00 3.00 6.00 2.00 4.00 1.00 2.00 0.00 - 0.00 0 120 240 360 480 600 720 $40 960 1080 1200 1320 1440 15M - Hyd No. 12 Time (min) Q (cfs) 3.00 2.00 1.00 0.00 -' 0.00 0 120 240 300 480 600 720 840 960 1080 1200 1320 1440 15M Hyd No. 13 Time (min) Lic. No. 0402056625 05/18/2022 SHEET TITLE: STORMWATER COMPLIANCE SHEET SHEET NUMBER C-904 REVISION 1 - 05/18/22 Hydrograph Report 15 Hydreeow Hydrogrephs Eldension for AAccI CNI1300 by Aut°tleek, Inc, Q020 Thursday. 03 13 1 2022 Hyd. No. 1 Pre-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 13.45 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 26,982 cuft Drainage area = 6.950 ac Curve number = 71' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.50 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 -CompoRte (ArWCN)=[n AIO x 98)+(2.800 x 60)+(1.740 x WO] 16.950 Pre-Dev POI #1 Q () Hyd. No. 1 -- 2 Year Q (C�) 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 12DO 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 HyHrefim Hydrograph. Enenspnfor Aura 1,0C 11300by Au[pdesk, Inc. QUO Thursday,03/3/2022 Hyd. No. 6 Pre-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 11.31 ds Storm frequency = 2 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 26,255 cuft Drainage area = 6.340 ac Curve number = 71• Basin Slope = 0.0 % Hydraulic length = Oft Tc method = TR55 Time of conc. (Tc) = 8.70 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hire Shape factor = 484 • Comp°sse (AsssCN) • in 280 x 98)+(2.85)x 80)+(2.230 xON 16.340 Pre-Dev POI #2 Q (cls) Hyd. No. 6 - 2 Year Q (018) 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 �S N 0 rn U F 0 0 a 3 A Hydrograph Report 16 Hydra. Hydrograph. ExtenNon for Aut°desM CM13M by Aubtleek, Inc. J 020 Thursday. 03 / 3/ 2022 Hyd. No. 3 Post-Dev to POI #1 Hydrograph type = SCS Runoff Peak discharge = 45.23 cfs Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 95,500 cult Drainage area = 10.570 ac Curve number = 91e Basin Slope = 0.0 °h Hydraulic length = 0 ft Tc method = User Time of oonc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 his; Shape factor = 484 el ll---------- el 11 -t�---- ---- 1 11 111 I 1 11 IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIII, 111111111111111111111111111111, 11111111111111, 11111111111111, IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIII, 111111111111111111111111111111,11111111111111, 1111111111111111111 1 11 1 11 11111111111111,11111111111111,11111111111111,11111111111111, 11111111111111, 11111111111,1 IIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII, 1 11 Nil 1 .1 .1 :1 :11 1 :.1 •:1 1:1 11 21 Hydrograph Report Hydra .Hydrograph. ExtenNm forAutpde.kW CINI30W by Autode.k, In.. Q02O Thursday. 03 / 3I2022 Hyd. No. 8 Post-Dev to POI #2 Hydrograph type = SCS Runoff Peak discharge = 14.98 ds Storm frequency = 2 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 30,348 cult Drainage area = 4.550 ac Curve number = 83e Basin Slope = 0.0 % Hydraulic length = Oft 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 •Compcebe(Ar aCN)_k2.740 x88)+(0.440 x 80)+(1.370 x 61N / 4.550 Post-Dev to POI #2 Q (cfa) Hyd. No. 8 -- 2 Year Q Ws) 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3,00 3.00 0.00 0.00 0 120 240 38D 480 600 72D $40 960 1080 1200 1320 1440 Hyd No. 8 Time (min) 2 YEAR STORM HYDROGRAPHS Hydrograph Report 17 Hydrograph Report 16 Hydreeow Hydrogrephs ExIen.bn for Aubdmk0 CNI130W by Autedesk. Inc, Q020 Hyd. No. 4 Post-Dev Undetained to POI #1 Hydrograph type = SCS Runoff Storm frequency = 2 yrs Time interval = 2 min Drainage area = 0.870 ac Basin Slope = 0.0 % Tc method = User Total precip. = 3.62 in Stone duration = 24 hire Thursday, 03 13 Peak discharge = 0.918 cfs Time to peak = 718 min Hyd. volume = 1,991 cuft Curve number = 62' Hydraulic length = 0 ft Time of conc. (Tc) = 5.00 min Distribution = Type II Shape factor = 484 -Compoeiea(A CN)=[(0.020x90)+(0.850x61)]/0.870 Post-Dev Undetained to POI #1 Cfs Q (Crs) 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 1080 12DO 1320 1440 150D - Hyd No. 4 Time (min) 22 Hydrograph Report Hydrellm Hydrogrephs ExIenslon for Aubdmk9 WI 3DW by Au[°dedl, Inc. QUO Thursday, 03 13 2022 Hyd. No. 9 Post-Dev Undetained to POI #2 Hydrograph type = SCS Runoff Peak discharge = 2.313 ds Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 4,627 cuft Drainage area = 0.980 ac Curve number = 75• Basin Slope = 0.0 % Hydraulic length = Oft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 3.62 in Distribution = Type II Storm duration = 24 hire Shape factor = 484 • Composite (AreelCN) • [(0.370 x98)+(0.610 x61)] / 0.980 Post-Dev Undetained to POI #2 Q Ida) Hyd. No. 9 -- 2 Year 3.00 2.00 1.00 Q (ds) 3.00 2.00 1.00 0.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560 - Hyd No. 9 Time (min) Hydreeow Hydro,sphs Ddension fer Autodeske CN113DW by Au[°dedl, Inc. QUO Thursday, 03 13 1 2022 Hyd. No. 5 Post-Dev to System 1 Hydrograph type = Reservoir Peak discharge = 2.909 cfs Storm frequency = 2 yrs Time to peak = 754 min Time interval = 2 min Hyd. volume = 95,309 cuft Inflow h . No. = 3 - Post-Dev to POI #1 Max. Elevation = 468.37 ft Reservoir name = System 1 Max. Storage = 52,704 cuft Storage Indication method used. Hydrograph Report Hydreeow Hydro,sphs Edenton for Aumdmke CMI 3DW by Aut°deek, Inc, Q020 Hyd. No. 7 Total Post-Dev POI #1 Hydrograph type = Combine Storm frequency = 2 yrs Time interval = 2 min Inflow hYd s. = 4 5 , Post-Dev to System 1 Q (cfs) Q (cfs) Q (cfs) Hyd. No. 5 - 2 Year :T 11 11111111111111,11111111111111,11111111111111,11111111111111,------ T TT 11111111111111, 11111111111111,111111111111111 IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII, 1 11 --- ------- I I 11111111111111, 11111111111111,111111111111111 IIIIIIIIIIIIII'IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII, 5111 I 1 11 I II I I 1 IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIII, IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIIII, 1 1.1 IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIII, 11111111111111111111111111111,11111111111111,11111111111111,11111111111111, 11111111111111, 11111111111111, I I I I I IIIIIIIIIIIIII,IIIIIIIIIIIIII,IIIIIIIIIIIII, 11111111111111111111111111111,11111111111111,11111111111111,11111111111111, 11111111111111, 11111111111111, --- ------- 11111111111111, 11111111111111,- 11111111111111111111111111111,11111111111111,11111111111111,11111111111111, 11111111111111, 11111111111111, z a W 20 _ W W z z W F W W��w Thursday, 03/3/2022 UJ Z 2 0U-I U z>-0 of W FW¢x Peak discharge = 2.999 cfs �of<IX-j U) Z) g Q 10 Z Time to peak = 754 minJ Z a Hyd. volume Contrib. drain. area = 97,300 cuft = 0.870 ac O 0 Q Q F U Z it U H 0 j U) Of Total Post-Dev POI #1 Hyd. No. 7 -- 2 Year z OpZ)W Y Z d J o •z J O U W H 3. (cfs) 3.00 REVISIONS 2.00 REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS 1.00 0.00 0 240 480 720 960 1200 1440 1080 1920 2160 2400 0 240 480 720 960 1200 1440 1080 1920 2160 2400 - Hyd No. 5 - Hyd No. 3 ® Total storage used = 52,704 cleft Time (min) _ Hyd No. 7 - Hyd No. 4 - Hyd No. 5 Time (min) 23 24 • Hydrograph Report Hydrograph Report Hyd mfim Hyd rograph.Enension for AutodeskW Civil 300 by Au[°tle.k. Inc. QUO Thureday, 03 13 Hyd resew Hyd rograph.EMenclonfor AutodmkW CNil 30W by Autodeek, Inc. QUO Thursday, 03/312022 Hyd. No. 10 Hyd. No. 11 Know what's bBIOW. Post-Dev to System 2 Total Post-Dev POI #2 Call before you dig. Hydrograph type = Reservoir Peak discharge = 3.076 ds Hydrograph type = Combine Peak discharge = 5.017 cfs ALWAYS CALL 811 Storm frequency = 2 yrs Time to peak = 726 min Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 30,348 cuft Time interval = 2 min Hyd. volume = 34,975 cuft It's fast. It's free. It's the law. Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 463.37 ft Inflow hyds. = 9, 10 Contrib. drain. area = 0.980 ac Reservoir name = System 2 Max. Storage = 9,873 cuft Storage lndicee°n memod uead. NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION Post-Dev to System 2 Total Post-Dev POI #2 DOCUMENT UNLESS INDICATED OTHERWISE. Q (�) Hyd. No. 10 - 2 Year Q (ds) Q We) Hyd. No. 11 -2 Year Q (�) PROJECT No.: V192076 15.00 15.00 5.00 5.00 12.00 12.00 4.00 9.00 1 1 9.00 3.00 :# 6.00 3.00 6.00 2.00 3.00 ,.00 6.00 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 5.00 CAD I.D.: SWP-0 PROJECT: 4.00 VIRGINIA STORMWATER 3.00 MANAGEMENT PLAN FOR 2.00 1.00 RST RESIDENCES 0.00 - 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560� - 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 166D - Hyd No. 10 - Hyd No. 8 ® Total storage used = 9,873 out Time (min) _ Hyd No. 11 - Hyd No. 9 - Hyd No. 10 Time (min) PROPOSED LOCATION: 25 Hydrograph Report Hydreebv F"rographs E dnesion for AWodaN1W Cieii SIDE by Autcdsd, Inc. QUO ThxWay, 03 / 3/ 2022 Hyd. No. 12 Pre-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 11.13 ds Storm frequency = 2 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 25,703 cuft Drainage area = 5.900 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 Stone duration = 24 him Shape factor = 484 ' Compoe8e (ArsarCN) • [(1.180 x 98)+(2.110 x 50)+(2.610 x89q 15.900 Pre-Dev POI 93 SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 26 ALBEMARLE COUNTY, VA Hydrograph Report Hydreebv Hydrograph. E dnes ion for AWodaN1W Cieii SIDE by Autedek, Inc. QUO Thursday. 031312022 Hyd. No. 13 Post-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 3.839 cfs Storm frequency = 2 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 7,756 cuft Drainage area = 2.220 ac Curve number = 69• 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 hire Shape factor = 484 ' composes (ArealCN) • [(0.450 x98)+(1.770 x81)] 12.220 Q (�) Hyd. No. 12 - 2 Year Q (ds) Q lam) 12.00 10.00 8.00 8.00 4.00 2.00 0 00 Post-Dev POI #3 Hyd. No. 13 -- 2 Year Q(�) 4.00 3.00 BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com F;M%N YAUZ"2ER Lic. No. 0402056625 05/18/2022 _� SHEET TITLE: 2.0 0 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 12DO 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 2.00 000 000 SHEET NUMBER C-905 REVISION 1 - 05/18/22 Hydrograph Report 27 Hydrefiow Hydro rsphs Edenton for Aumdmke Cell 3DW by Autadesk, Inc. Q020 Thursday. 03 13 1 2022 Hyd. No. 1 Pre-Dev POI #1 Hydrograph type = SCS Runoff Peak discharge = 29.12 cfs Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 58,608 cuft Drainage area = 6.950 ac Curve number = 71' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.50 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 CconMft (ArWCN)=[n AIO x 98)+(2.800 x 50)+(1.7,10 xWO] 16.950 Pre-Dev POI #1 0 (Cfs) Hyd. No. 1 - 10 Year Q (ds) 30.00 25.00 20.00 15.00 10.00 5.00 0 00 30.00 25.00 20.00 15.00 10.00 6.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560 - Hyd No. 1 Time (min) Hydrograph Report 26 Hydrell. Hydrograph. ExtI for AutedesM CMI 3M by Aubtlesk, Inc. J 020 Thursday. 03 / 3/ 2022 Hyd. No. 3 Post-Dev to POI #1 Hydrograph type = SCS Runoff Peak discharge = 73.24 cfs Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 159,690 cult Drainage area = 10.570 ac Curve number = 91' 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 Storm duration = 24 his; Shape factor = 484 10 YEAR STORM HYDROGRAPHS 29 Hydrograph Report Hydrograph Report 30 Hydrefiow Hydro rsphs Egen.bn for Aukx W WI 3DW by Au[ode.k. 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 = 0.870 ac Basin Slope = 0.0 % Tc method = User Total precip. = 5.47 in Stone duration = 24 hire Thursday, 03 13 Peak discharge = 2.563 cfs Time to peak = 718 min Hyd. volume = 5,141 aft Curve number = 62' Hydraulic length = 0 ft Time of conc. (Tc) = 5.00 min Distribution = Type II Shape factor = 484 'Composite(A CN)=[(0.020x90)4(0.850x81)]/0.870 Post-Dev Undetained to POI #1 Q (Cfs) Hyd. No. 4 - 10 Year 3.00 2.00 1.00 Q (019) 3.00 2.00 1.00 0.00 0.00 0 12D 240 360 480 600 720 840 960 1060 12DO 1320 1440 1560 - Hyd No. 4 Time (min) Hydreflow Hydrogrephs Ddension fcr Autodeske CN113DW by Au[edask, Inc. QUO Thursday, 03 13 1 2022 Hyd. No. 5 Post-Dev to System 1 Hydrograph type = Reservoir Peak discharge = 27.55 cfs Storm frequency = 10 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 159,499 cult Inflow hyd. No. = 3 - Post-Dev to POI #1 Max. Elevation = 470.23 ft Reservoir name = System 1 Max. Storage = 74,262 cult Storage Indication method used. Post-Dev to System 1 Q (Cfs) Hyd. No. 5 - 10 Year 0 (dis) 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0 00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0 240 480 720 960 1200 1440 1680 1920 210D - Hyd No. 5 - Hyd No. 3 ® Total storage used = 74,262 cuff Time (min) 34 Hydrograph Report 37 Hydrograph Report 33 Hydrograph Report Hydrograph Report 35 Hydrafim Hydrograph. EMnspn for Autode.kW Crv113DW by Au[edesk. Inc. QUO Thursday, 03 13 2022 Hyd. No. 6 Pre-Dev POI #2 Hydrograph type = SCS Runoff Peak discharge = 24.90 ds Storm frequency = 10 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 57,028 cuft Drainage area = 6.340 ac Curve number = 71' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 8.70 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hire Shape factor = 484 • composs, (AsssCN) • in 280 x 98)+(2.85)x 80)+(2.230 xON 16.310 Pre-Dev POI #2 Q (ors) Hyd. No. 6 - 10 Year Q (ars) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 0 00 �S N 0 rn U F 0 O Y 3 n 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 12DO 1320 1440 1,960 - Hyd No. 6 Time (min) HydreBow Hydrograph. ExtenNm forAutadeeW CINI 30W by Autodesk, In.. Q020 Thnft. 03 13 1 2022 Hyd. No. 8 Post-Dev to POI #2 Hydrograph type = SCS Runoff Peak discharge = 27.00 ds Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 55,779 cult Drainage area = 4.550 ac Curve number = 83' 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 •Compoebe(Ar aCN)_k2.7,10 x 88)+(0.W x 80)+(1.370 x 613 / 4.550 Post-Dev to POI 92 0 (ors) Hyd. No. 8 - 10 Year Q (CIFS) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 0 00 28.00 24.00 20.00 16.00 12.00 8.00 4.00 0.00 0 120 240 360 480 600 72D 840 960 1080 1200 1320 Hyd No. 8 Time (min) Hydrefiow Hydro rsphs Extension for Aukxbske WI" by Au[edesk, Inc. QUO Pesetas, 03 13 Hyd. No. 9 Post-Dev Undetained to POI #2 Hydrograph type = SCS Runoff Peak discharge = 4.678 ds Storm frequency = 10 yrs Time to peak = 716 min Time interval = 2 min Hyd. volume = 9,457 cuft Drainage area = 0.980 ac Curve number = 75' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 5.47 in Distribution = Type II Storm duration = 24 hire Shape factor = 484 Composite (ArWCN) • [(0.370 x98)+(0.610 x61)] / 0.980 Post-Dev Undetained to POI 02 0 (ds) Hyd. No. 9 - 10 Year 5.00 4.00 3.00 2.00 1.00 Q (ds) 5.00 4.00 3.00 2.00 1.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 - Hyd No. 9 Time (min) Hyd mfim Hydrograph. Enension for AutodeskW Cr,iI 3 by Autede.k. Inc. QUO Thureday, 03 13 Hyd. No. 10 Post-Dev to System 2 Hydrograph type = Reservoir Peak discharge = 18.73 ds Storm frequency = 10 yrs Time to peak = 720 min Time interval = 2 min Hyd. volume = 55,779 cuft Inflow hyd. No. = 8 - Post-Dev to POI #2 Max. Elevation = 465.03 ft Reservoir name = System 2 Max. Storage = 14,440 cuft Storage Indicaton memod W. Post-Dev to System 2 Q (cra) Hyd. No. 10 - 10 Year Q (ds) 28.00 24.00 20.00 16.00 12.00 8.00 4.00 0 00 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 12W 1320 1440 1560 - Hyd No. 10 - Hyd No. 8 ® Total storage used = 14,440 cult Time (min) Hydrograph Report 37 Hydraabx F"rographs Ednesion for AWodeNrW Ciet SIDE by Autcdsdk Inc. QUO TlxrWay, 03 /312022 Hyd. No. 12 Pre-Dev POI #3 Hydrograph type = SCS Runoff Peak discharge = 23.99 cfs Storm frequency = 10 yrs Time to peak = 718 min Time interval = 2 min Hyd. volume = 54,951 cuft Drainage area = 5.900 ac Curve number = 72' Basin Slope = 0.0 % Hydraulic length = Oft To method = TR55 Time of conc. (Tc) = 8.50 min Total precip. = 5.47 in Distribution = Type II Stone duration = 24 him Shape factor = 484 ' Compoe8e (AraarCN) • [(1.180 x 98)+(2.110 x SO) +(2.610 x89q 15.900 Pre4)ev POI #3 0 (ds) Hyd. No. 12 -10 Year 0 lots) 24.00 20.00 16.00 12.00 8.00 4,00 0 00 24.00 20.00 16.00 12.00 8.00 4.00 0.00 0 12D 240 360 480 600 720 840 960 1060 1200 1320 1440 156D - Hyd No. 12 Time (min) z a DJ WW DJ Hydrograph Report 32 0 z z fn Hydrefiow Hydrogrephs Edenton for Aumdeske CMII Soo by Autodeek, Inc. Q020 Thursday, 03/3/2022 uJ (92 U O U (OZILI WU)% Hyd. No. 7 Wz r C� p of Fw¢x w Total Post-Dev POI #1 J of Z U W (/) Hydrograph type = Combine Peak discharge = 28.93 cfs U) j 2 Q Q Z Storm frequency = 10 yrs Time to peak = 722 min MIJ Z Time interval = 2 min Hyd. volume = 164,640 cuft O 0 Q d Q H Inflow hyds. = 4, 5 Contrib. drain. area = 0.870 ac U Z 0: U H QJO0caw Z ll J o •z J O U W H Total Post-Dev POI #1 0 (Cfs) Hyd. No. 7 - 10 Year Q (cfs) 30.00 30.00 25.00 25.00 REVISIONS 20.00 20.00 REV DATE COMMENT 1 05/18/22 COUNTY COMMENTS 15.00 15.00 10.00 10.00 5.00 6.00 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) 36 Hydrograph Report Hydresew Hydrograph. E4enslon for AutodmkW Grit 30W by Autode.k, Inc. QUO Thursday, 03/312022 Hyd. No. 11 Know what's below. Total Post-Dev POI #2 Call before you dig. Hydrograph type = Combine Peak discharge = 22A5 cis ALWAYS CALL 811 Storm frequency = 10 yns Time to peak = 720 min Time interval = 2 min Hyd. volume = 65,236 cuft It's fast. Ifs free. It's the law. Inflow hyds. = 9, 10 Contrib. drain. area = 0.980 ac NOT APPROVED FOR CONSTRUCTION THIS DRAWING IS INTENDED FOR MUNICIPAL AND/OR AGENCY REVIEW AND APPROVAL. IT IS NOT INTENDED AS A CONSTRUCTION Total Post-Dev POI 92 DOCUMENT UNLESS INDICATED OTHERWISE. Q (cls) Q ids) Hyd. No. 11 - 10 Year PROJECT NO.: V192076 24.00 24.00 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 1017/2021 20.00 20.00 CAD I.D.: SWP-0 PROJECT: 16.00 76.00 VIRGINIA STORMWATER 12.00 12.00 MANAGEMENT PLAN FOR 8.00 8.00 4,00 4.00 RST RESIDENCES 0.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 156D - Hyd No. 11 - Hyd No. 9 -Hyd No. 10 Time (min) PROPOSED LOCATION: SEMINOLE TRAIL AND ASHWOOD BLVD. CHARLOTTESVILLE, VA22911 38 ALBEMARLE COUNTY, VA Hydrograph Report Hydraabry Hydrograph. E dnes ion for AWodeNrW Ciet SIDE by Autedek, Inc. QUO Hyd. No. 13 Post-Dev POI #3 Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 2 min Drainage area = 2.220 ac Basin Slope = 0.0 % To method = User Total precip. = 5.47 in Stone duration = 24 hire ' Comporite (ArealCN) • [(0.450 x98)+(1.770 x81)] 12.220 Q (cfs) 10.00 - 8.00 6.00 4.00 2.00 MOHLER// Peak discharge = 8.687 cfs Time to peak = 718 min 9100 ARBORETUM PKWY, SUITE 360 Hyd. volume Curve number = 17,418cuft = 69' RICHMOND, VIRGINIA23236 Hydraulic length = Oft Phone: (804) 893-8200 Time of conc. (Tc) = 5.00 min Distribution Shape factor = Type II = 484 VA@BohlerEng.com _1a.ALTH e.. Post-Dev POI #3 Hyd. No. 13 -- 10 Year Q tots)or 10.00 V N YA R 'O L. No. 0402056625 1 8.00 0A: ic05/18/2022 6.00 SHEET TITLE: 4.00 STORMWATER COMPLIANCE 2.00 SHEET 0.00 0.00 0 12D 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560 - Hyd No. 13 Time (min) SHEET NUMBER C-906 REVISION 1 - 05/18/22 U 5 O 3 n v\III PROP. ADS ISOLATOR ROW ti.` 4j9. \ p10 IN- O a \ Ale 1 \ o \ ♦NN11 4 ---- y6O �s IN S •`` 1 I' ®� ' ` .:J I STM STM �� - �� ' STM \ B-10 II -30 B-20 1 - 474 472 T= 473 \ � ♦, 471 ' ' ' 470 I IN STM i 45 ' / STM ' , 65 ' „ G-10 - "R15 ' / G-20 ® 0 y44� c��♦, , \ `, \, `, \ , ,OD _ LOD �+od �I ttacriT� o�c o0 1INN1, \\ \ \\ \ \, \\ , SYSTEM 1 PLAN VIEW SCALE: 1" = 30' 83, N a I I I I Pond Report 5 -�_, HytlraBow Hytlrtgraphs Fxlenslon MAutotlesk®CM13D® by AUtotlxk, Inc. Y2020 Tnursaay, g31312c22 Pond No. t - System t m ly Pond Data O Pond storage Is based on uxrdefined vaI.. m Stage / Storage Table stage (ft) Elevabon (ft) Coraour erne (sgft) Incr. Storage (tuft) Total storage (tuft) - 0.080 463W No 0 0 0.08 tasm Na 553 553 N I 0.50 463.50 We 2,765 3,318 � m 1.00 464.00 Na 3,318 6,836 `1IULW we 3,318 glow CID `I`♦ 2.00 41i5.00 We 3,318 13,273 �11p 3.50 '16619) Na 3,318 6,591 ` T` I 9.00 466.00 Na 3,31a ig909 3.50 466.W No 7,179 27,0n0 4.11 46 w Ne 7,080 34,18s ` 4.50 4W.w Ns, 6,945 41.113 II,5.01 468.00 No 6.768 47,881 5.010 460.50 N. 6,545 64A26 IN 6.00 469.00 6.50 450 69. No Na 6,20 5,808 60,80g a8,597 [� 7.00 470.00 Na 5,442 72,039 7.50 470.50 Na 4,752 76,791 II ♦I` 8.00 471.00 we 3.640 80.431 0.11 471.50 we 3,318 a&749 ` I 9.00 472.00 Na 3,316 87,087 Culver / Critics, Structures, Weir Structures [A] 16] [C] [P ar] [A] [B] [C] [D] SYSTEM 1: Rise (in) = 2A.00 &00 0.00 0.00 Crest Len (11) = 2.00 2.00 0.0o O.W PROP. t 87,000 CIF open (in) = 24.00 5.00 0.00 0.0) Crest EL (ft) = 180M 46&00 0.00 0.00 II UNDERGROUND No. Barrels = 1 1 0 0 WeirCwft. = 3.33 &M 3.33 &33 II DETENTION SYSTEM Invert EL (ft) =463.00 463.01 0.00 0.00 Weir Type =Rest Rect - - WITH ISOLATOR ROW Length (ft) = 7.60 0.67 0.00 0.00 MUIBsta. = Yea Yea No No I I \\ \ 31".1%) = 3.50 0.00 0.00 we NWA.. _ .013 .013 .013 We �I\\ VARIABLE WIDTH' Ores . =0.60 Multi -stage= we 0.60 ON0.60 Yea No No WI.(In,ho TINEI.. = 0.000 (by Wet area) = 0.00 SWM FACILITY (ft) II EASEMENT \ raw ax.wmmUmle....�.ralwnem.rminlxlwen.11:1�ma.warn®"a.weree.arawraom"na.e,.iarnrepl. v 1 sse.(ft) Stage Discharge E,ee(ft) - 10.00 479.00 �♦`♦ \ 0 8.00 471.00 ♦`\ ♦♦♦`\ I 6.00 489.00 4.00 487.00 \ 0.00 463.00 0.00 4.00 8.00 12.00 16.00 20.00 24.00 2&00 3200 38.00 40.00 44.00 \\ \\ `\ ♦ Oiadvme (ore) -TotelO I0t IN II �� `♦� �o O ` \\ J I IN 30 15 7.5 0 30 1 "= 30' _ PROP. "KEEP I I ; i ' ' III ' , , `\ \\ �\ \` ` \ ' 1 STM I IyN Y RIGHT" SIGN 15" RCP ' II AQROP-„KEEP O 1vI I 'i I ,-1-'\_.•1 1 I i _ ,___ -' �_ , GHT' 516yN OPF IN ; \ \ `\\\ \ ` ♦ O 'kdrl A \ A1ti' A'i , - ' I I 1 \ `\ \ `\ \ '\ `\ `�♦ ♦\ ' ' \ Al le / o KIi- 1 , \ � ' ', I II \\ \\ O I I I 1 \ \`♦\ 1 `I 1` \ \ p It I; 11 ♦ \ \\ 1\'`, \` `, 11\\``\`,\ 11 �I{ ' b,; \,\ `♦ 1`, 1`\ 1\\ `\ DQ VARIABLEWIDTH 0 II SWM FACILITY I U, I 'i EASEMENT 'i 1 A S ISOLATOR R�W II'� � � r0 • J I 'i 'i 1, '1 � 'i'1 ' 1, ', I' '\ I i i i i i i O . I � i� I 7S 'O / n I I I i i l I i �' - ♦.�„1 �; I i 0 � I 1129.T �--480 SYSTEM 2: o II II ------ PROP. i 17,000 CF I --- ' JI =Yq F I I I I I I UNDERGROUND I -- N m. 1\ DETENTION SYSTEM ,'- WITH ISOLATOR ROW I I, TO I' ` �\ I I I I I ;' r ---- --- _� I I I \ I C) '- \ I I , I l\'/l ' _ ______F____ ♦`I ` .\ I Iii i I l { I 1 1 II. '1 r\ ST \ \III III (IIIII II 111'1 J 1 1 1 1° 1 I11 II O I 111 _ ( _ O. �''/ 1 I; I I I I I I I I I I 1 1 1 I' I; ; 'I -� ', I �/ ©7�"� I 11 '1 .� 11 I 'I I I I I I __ /1® II • \ 111 I111 IIII II 1 IIII I _ 20' PUBLIC DRAINAGE EASEMENT _ i 'I i i 18�, P__�, ,, 1 I, I 1 1 I I I I, I 1 1' r J \ \\ , , I 1 1 1 \ I I � IjI y%� • \ STM I l 11 1 1 I I I I I I I I I I I ✓Nr ``\\ \ I.1�\\ \\\\ ,, 1 _ ♦ I ,,, , I, 'p ' I yJ I- :%3/I ; 1 1, J : t;� I I, 1 I, 1 'r 11\ ,p , . I J / i iii li i i i i i I 1 I` STM "1\ \1\ I' -, IY I'n l' 1 ~1 . INLET- ^ 1 1 \I11 IIII IIII II,I 1 1 `\\ l u 11 I', STM I iI F-20 < \ \ �11 i I 1 "1 • I `I 1 , 111 `ih.B� / , 470 % s♦\ ' ' \\4 j II I I I II 0 473 , \ STM \ `\ i' X-F400, /IW=44B.$� SYSTEM 2 PLAN VIEW SCALE: 1" = 30' 30 15 7.5 0 30 1 "= 30' Pond Report it Hydraflow Hydn9aphs Extension by Autode" CMI 3M by Aulodesk, Inc. Y2020 Thursday, 031312M Pond No. 2 - System 2 Pond Data Pond storage Is based on ux14a6rned value". Stage / Storage Table stage (ft) Elevation (ft) Contour araa (left) Incr, storage (tuft) Total storage (tuft) 0.00 4WW Na 0 0 0.00 Zim We 137 137 0.50 460.50 we 605 822 1.00 '161.00 Na TVs 2,097 1.50 461.w We 1,712 3,808 2.00 462.00 Me i, 884 5,493 2.50 46 w ne 1,648 7.14, 3.00 46300 we 1,801 8.742 3.50 / :w We I'm 10.285 4.00 4 Lw We 1,469 11,754 4.10 464.50 We 1,374 13,128 5.00 465.00 Ns, t,Y46 14,374 5.60 465.50 We 1,018 15.392 6.00 486.00 We sell 16,233 6.50 466.50 We on 17,055 6.75 466.75 we 411 17,466 CuIWk I Orifice Structures Weir Structures [A] 1133 [C] [PrfRsrl [A] [131 [D] [D] Rix (In) - low &W 0.00 0.00 Crest Len (ft) = 4.00 InaMe 0.00 0.00 seen (in) = law &00 0.00 (LW Crest EL (1) = 463.50 452.75 0.00 0.00 No. Barrels = 1 1 0 0 Weir Coeft. = 3.33 3.33 3.33 3.33 Invert El.(1n = 159.0) 459.01 0.00 0.00 Weir Type =Rest Rent - - LMlgth (10 = 35.80 0.67 0.0) (LW MuleSta. = Yea Year No No SIP.(%) = 0.50 0.00 0.00 We 1,14akni = .013 .013 .013 We ONe. CPML =0.60 0.w 0.60 0.60 EdiI.(iNh* =0.000(by Coninuo MUft~ = nle Yx No No TIN Elev. (ft) = 0.00 xm.c„Iw,vmnuwn".".re"myaa.,mrinlnlxlaua,anla)runlml. wmr,umaufmlaro,mnmraeore Adanauempennl=1. Stage (ft) Stage / Discharge Ebv (g) 467.00 466.00 455.00 404.00 463.00 482.00 481.00 460.00 0.00 2.o0 4.00 am am 10.00 12.00 14.00 low 18.00 20.00 Mori am - Tate/ CI Oiecharye (cre) SECTION A -A SECTION A -A PS/LADE INV = 463.00 SYSTEM 1 OUTLET STRUCTURE DETAIL NOT TO SCALE NOTE: CONTRACTOR TO PROVIDE SHOP DRAWINGS TO BOHLER ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO INSTALLATION PS/LADDER d d. 0.6 Q G I IU-YAK WA'E = 4t3b.U3 Q r_ 6" WIDE CONC WEIR 17 2-YEAR VISE = 463.37 TOP = 463.5 - a d - 1-YEAR ME = 462.38 ,aQ d d. C d Q Q d Q 18" RCP OUTFALL INV = 459.00 a ' -6" CONC WEIR d p - INV=459.00 A Aa' - a -Q d a 8" ORIFICE PROP TRASH RACK INV = 459.00 SECTION B-B a d 4 NSIDE CEILING = 467.50 d 4 4' I SYSTEM 2 OUTLET STRUCTURE DETAIL NOT TO SCALE NOTE: CONTRACTOR TO PROVIDE SHOP DRAWINGS TO BOHLER ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO INSTALLATION EI �LU Z EE w w LU Z Fa W WZLLI �WU)� F W Q 2 W miU)Z)2<<Zr z U) rnU)Q 0 Z Q Q Q F Z J � U) Z) Of 0 x LU J d U) LU J O U W 1-- REVISIONS REV DATE COMMENT 1 1 05/18/22 COUNTY COMMENTS 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.: 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 vvv _.a -ACTH e.. F;M%N YAUZ"2ER Lic. No. 0402056625 1 05/18/2022 -J SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-907 REVISION 1 - 05/18/22 m U 0 O AA FIBERGLASS SEPARATION CYLINDER AND INLET TOP SLAB ACCESS (SEE FRAME AND COVER DETAIL) A L FLOW FIBERGLASS SEPARATION CYLINDER P. AND INLET Nl INLET PIPE B (MULTIPLE INLET PIPES MAY BE ACCOMMODATED) f3 SOLIDS i V I _ I / +1455 �I MAXJ PLAN VIEW B-B N.T.S. CENTER OF CDs STRUCTURE, SCREEN AND SUMP OPENING A I; -1 I�wl NI SLAB ACCESS 72' [18291 I.D. MANHOLESTRUCTURE :TOR TO GROUT TO GRADE .� /-OUTLETPIPE mmmLammm CDS3020-6-C DESIGN NOTES THE STANDARD CDS3020-6-C CONFIGURATION IS SHOWN. ALTERNATE CONFIGURATIONS ARE AVAILABLE AND ARE LISTED BELOW. SOME CONFIGURATIONS MAY BE 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) B 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 2 OUTLET PIPE RIM ELEVATION ' ANTI -FLOTATION BALLAST WIDTH HEIGHT NOTES/SPECIAL REQUIREMENTS: • PER ENGINEER OF RECORD GENERAL NOTES f .1PERMANENT 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 SOLUTIONS LEG REPRESENTATIVE. www.contechES.c 4. CDs WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN THIS DRAWING. " 5. STRUCTURE SHALL MEET AASHTO H820 AND CASTINGS SHALL MEET HS20 (AASHTO M 306) LOAD RATING, ASSUMING GROUNDWATER ELEVATION AT, OR BELOW, THE OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO CONFIRM ACTUAL GROUNDWATER ELEVATION. I "' 6. PVC HYDRAULIC SHEAR PLATE IS PLACED ON SHELF AT BOTTOM OF SCREEN CYLINDER. REMOVE AND REPLACE AS NECESSARY DURING �I V-9" (5331 5v MAINTENANCE CLEANING. o INSTALLATION NOTES I A. ANY SUB -BASE, BACKFILL DEPTH, ANDIOR 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. C11 CDS TYPICAL DETAIL PROPOSED LAYOUT PROPOSED ELEVATIONS 'INVERT ABOVE BASE OF CHAMBER 0! PART TYPE RAMP ITEM U A DESCRIPTION INSTALL FLAMP ON 241 ACCESS PIPE I RT#. MC72002 L INVERTMAX FLOW IN H W a i � o ?_ 61 STORMTECH MC-7200 CHAMBERS 472.92 6 STORMTECH MC-72DO END CAPS 468 42 12 m I 467 9 MANIFOLD B 18" x 18" BOTTOM MANIFOLD. ADS N-12 t9T 36 40 m STONE VOID I 467.9 466.92 MANIFOLD C 18" x 18' BOTTOM MANIFOLD. ADS N-12 1,97" CONCRETE STRUCTURE D ( E IG BV ENGINEER / VIDE Y OTHERS) 8.0 CFS OUT TOP OF STONE: 466.92 (n z w 22131 (PERIMETER STONE INCLUDED) Ili (q Y W TOP OF MC-7200 CHAMBER: 465.9 CONCRETE STRUCTURE E (DESIGN BY ENGINEER !PROVIDED BY OTHERS) 17.0 CFS IN 4" ISOLATOR ROW PLUS INVERT: 461.11 (COVER STONE INCLUDED) WNVEIR W > ¢ a m 24" ISOLATOR ROW PLUS INVERT: 461.11 CONCRETE STRUCTURE WM'EIR F (DESIGN BY ENGINEER / PROVIDED BY OTHERS) BASE STONE INCLUDED Z O U ° 4320 18" x 18" BOTTOM MANIFOLD INVERT: 461. 358.3 SYSTEM PEKIMIt I tR (ft) 1W x 18" BOTTOM MANIFOLD INVERT: 461. UNDERDRAIN G 6" ADS N-12 DUAL WALL PERFORATED HDPE UNDERDRAIN W O LE BOTTOM CONNECTION INVERT: 1 61.0 INSPECTION PORT H 4" SEE DETAIL E BOTTOM OF MC-7200 CHAMBER: 460.9 m UNDERDRAIN INVERT: I457.9 W U BOTTOM OF STONE: 457.9 a8 CO W W Q 2c G o a s C TIE 2H F a #� W C1 �W d� _ 150.02, U c G 143.89, o W GgGy5�j !g I c___TFI G I 'o D� t _ I 71 C I o 4 I 6� ko A F �... 1 I o 8' o� tit, i I y CON"Ne In N oK p E m s H a a logo n 5pA c �A J iw `- ISOLATOR ROW PLUS EE (SEE DETAIL) 'e NOTES FOR MANIFOLD SIZING GUIDANCE. PLACE MINIMUM 7.50 O ADSPLUS175 WOVEN GEOTEXTILE OVER BEDDING SIZE TO BE DETERMINED A SITE DESIGN ENGINEER. SEE TECH NOTE DESIGN 1 F P N MANIFOLD TO STONE AND UNDERNEATH CHAMBER FEET FOR SCOUR PROTECTION AT ALL DUE TO THE ADAPTATION OF THIS CHAMBER SYSTEM TO SPECIFIC SITE AND DESIGN CONSTRAINTS, IT MAY BE NECESSARY TO CUT AND COUPLE ADDITIONAL PIPE TO STANDARD MANIFOLD COMPONENTS IN THE FIELD. o 3 a CHAMBER INLET ROWS THE SITE DESIGN ENGINEER MUST REVIEW ELEVATIONS AND IF NECESSARY ADJUST GRADING TO ENSURE THE CHAMBER COVER REQUIREMENTS ARE MET. & THIS CHAMBER SYSTEM WAS DESIGNED WITHOUT SITE -SPECIFIC INFORMATION ON SOIL CONDITIONS OR BEARING CAPACITY. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR c SHEET DETERMINING - -BED LIMITS THE SUITABILITY OF THE SOIL AND PROVIDING THE BEARING CAPACITY OF THE INSITU SOILS. THE BASE STONE DEPTH MAY BE INCREASED OR DECREASED ONCE THIS INFORMATION IS PROVIDED. • NOT FOR CONSTRUCTION: THIS LAYOUT IS FOR DIMENSIONAL PURPOSES ONLY TO PROVE CONCEPT 8 THE REQUIRED STORAGE VOLUME CAN BE ACHIEVED ON SITE. 2 OF 5 SYSTEM 2 COVER PIPE CONNECTION TO END CAP WITH ADS GEOSVNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH HIGHLY RECOMMENDS f� FLEXSTORM INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES CATCH BASIN OR MANHOLE SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24" [600 mm] MIN RECOMMENDED) INSPECTION & MAINTENANCE STEP 1) INSPECT ISOLATOR ROW PLUS FOR SEDIMENT INSTALL FLAMP ON 24" (600 mm) ACCESS PIPE PART#: MC720024RAMP MC7200 CHAMBER 24" (600 mm) HDPE ACCESS PIPE REQUIRED USE FACTORY PARTIAL CUT END CAP PART #: MC720DIEPP24B OR MC72001EPP248W MC-7200 ISOLATOR ROW PLUS DETAIL A. INSPECTION PORTS (IF PRESENT) A. 1. REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN A.2, REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3, USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG AALOWER A CAMERA INTO ISOLATOR ROW PLUS FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.5. IF SEDIMENT IS AT, OR ABOVE, 3• (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B. ALL ISOLATOR PLUS ROWS B.I. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW PLUS B.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW PLUS THROUGH OUTLET PIPE i) MIRRORS ON POLES OR CAMERAS MAYBE USED TO AVOID A CONFINED SPACE ENTRY A) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3. IF SEDIMENT IS AT. OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. 97 EP zI CLEAN OUT ISOLATOR ROW PLUS USING THE JETVAC PROCESS A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" 1 m 1.1 OR MORE IS PREFERRED ( B. APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN C. VACUUM STRUCTURE SUMP AS REQUIRED STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1. INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. CONCRETE( PAVEN CONCRETE SLAB 6" (150 mm) MIN THICKNE STORMTECH CHAMBER OPTIONAL INSPECTION PORT MC-7200 END CAP ONE LAYER OF ADSPLUS175 WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS 10.3' (3.1 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS 12' (300 mm) MIN WIDTH CONCRETE COLLAR NOT REQUIRED FOR UNPAVED APPLICATIONS 8" NYLOPLAST INSPECTION PORT BODY (PART# 270aAG41PKIT) OR TRAFFIC RATED BOX WISOLID LOCKING COVER 4' (100 mm) SDR 35 PIPE 4• (100 mm) INSERTA TEE TO BE CENTERED ON CORRUGATION VALLEY NOTE: INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION VALLEY. 4" PVC INSPECTION PORT DETAIL [MC SERIES CHAMBER) NTS ISOLATOR ROW TYPICAL DETAIL PROPOSED LAYOUT PROPOSED ELEVATIONS ITESTORMTECH MC-7200 CHAMBERS 678. PART TYPE YMOU DESCRIPTION STORMTECH MC-7200 END CAPS MINIMum ALLUWAbLit UKAUL I PAVED473.5 FLAMPI A IINb I ALL LA N 24 ACCESS PIPE I P RT#. MC720021 .� _ a73.0 _ MANIFOLD1 B 124" x 24' BOTTOM MANIFOLD. ADS N-12 87068 (PERIMETER STONE INCLUDED) TOPOF MC-7200 CHAMBER: 471 UUNUKc I c a I KUU UKL c walUcaion °I uvomccnl rnvvvcU or vin (COVER STONE INCLUDED) 24" x 24' BOTTOM MANIFOLD INVERT: 466.1 CONCRETE STRUCTURE F (DESIGN BV ENGINEER / PROVIDED BY OTHERS) BASE STONE INCLUDED 24 "x 24'BO7TOM MANIFOLD INVERT: 466.1 WIWEIR 16591 EM AREA 4" x 24" BOTTOM MANIFOLD INVERT: 466.1 CONCRETE STRUCTURE G (DESIGN BY ENGINEER /PROVIDED BY OTHERS) ,.r oo «, ,.,.., ,o \�\ ISOLATOR ROW PLUS (SEE DETAIL) PLACE MINIMUM 17.50' OF ADSPLUS175 WOVEN GEOTEXTILE OVER BEDDING STONE AND UNDERNEATH CHAMBER FEET FOR SCOUR PROTECTION AT ALL CHAMBER INLET ROWS - BED LIMITS slew 4 OF 5 DFCHAMBER k' _ MAX FLOW LU i H a 0 I W ' i WO G 4 n r.FS nl IT 41.5 CFS IN 19.0 CFS IN H cn It LL UL' A B g 8 t N° E F: P i E m) a L � E m N 0 ° �N Q? e OA wpm ��n n= m 0 J It. 51ZE TO BE DETERMINED BY SITE DESIGN ENGINEER. SEE TECH NOTE #6.32 FOR MANIFOLD SIZING GUIDANCE }-' ADAPTATION OF THIS CHAMBER SYSTEM TO SPECIFIC SITE AND DESIGN CONSTRAINTS IT MAY BE NECESSARY TO CUT AND COUPLE ADDITIONAL PIPE TO STANDARD MANIFOLD tm g o EfHE SIGNIENGINEER MUST REVIEW ELEVATIONS AND IF NECESSARY ADJUST GRADING TO ENSURE THE CHAMBER COVER REQUIREMENTS ARE MET. m_' 3ER SYSTEM WAS DESIGNED WITHOUT SITE -SPECIFIC INFORMATION ON SOIL CONDITIONS OR BEARING CAPACITY. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR SHEET OF THE SOIL AND PROVIDING THE BEARING CAPACITY OF THE INSITU SOILS. THE BASE STONE DEPTH MAY BE INCREASED OR DECREASED ONCE THIS INFORMATION IS I CONSTRUCTION: THIS LAYOUT IS FOR DIMENSIONAL PURPOSES ONLY TO PROVE CONCEPT 8 THE REQUIRED STORAGE VOLUME CAN BE ACHIEVED ON SITE. 2 OF 5 SYSTEM 1 z z_ W W ELI Tn Z ELI 0 Zjz(AU Z W H U W j VI Z ELI W VJ j W z>-0 of F W Q 2 W Z > z 0 W 0 0 U)72QQzQ 0ZOf< 0 z J 00 W Z Z D- Q J D- Q of J F 0 w REVISIONS ' REV I DATE I COMMENT CNECxE eY 1 05/18/22 COUNTY COMMENTS PCM • 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.: SWP-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@Bohle�Eng.Com raALTH [ice In%N YAUGER Lic. No. 0402056625 05/18/2022 _4 SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-908 REVISION 1 - 05/18/22 3 N C6 rn U 0 O 3 n PROJECT INFORMATION ENGINEERED PRODUCT MANAGER ADS SALES REP PROJECT NO. //Alra. Advanced Drainage Systems, Inc, RST RESIDENCES - SYSTEM 1 CHARLOTTESVILLE, VA MC-7200 STORMTECH CHAMBER SPECIFICATIONS 1. CHAMBERS SHALL BE STORMTECH MC-7200. 2, CHAMBERS SHALL BE ARCH -SHAPED AND SHALL BE MANUFACTURED FROM VIRGIN. IMPACT -MODIFIED POLYPROPYLENE COPOLYMERS. 3, CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS' CHAMBER CLASSIFICATION 6ox101. 4. CHAMBER ROWS SHALL PROVIDE CONTINUOUS, UNOBSTRUCTED INTERNAL SPACE WITH NO INTERNAL SUPPORTS THAT WOULD IMPEDE FLOW OR LIMIT ACCESS FOR INSPECTION. 5. THE STRUCTURAL DESIGN OF THE CHAMBERS, THE STRUCTURAL BACKFILL, AND THE INSTALLATION REQUIREMENTS SHALL ENSURE THAT THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, SECTION 12.12. ARE MET FOR: 1) LONG -DURATION DEAD LOADS AND 2) SHORT -DURATION LIVE LOADS, BASED ON THE AASHTO DESIGN TRUCK WITH CONSIDERATION FOR IMPACT AND MULTIPLE VEHICLE PRESENCES. 6. CHAMBERS SHALL BE DESIGNED, TESTED AND ALLOWABLE LOAD CONFIGURATIONS DETERMINED IN ACCORDANCE WITH ASTM F2787, 'STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS'. LOAD CONFIGURATIONS SHALL INCLUDE: 1) INSTANTANEOUS (0 MIN) AASHTO DESIGN TRUCK LIVE LOAD ON MINIMUM COVER 2) MAXIMUM PERMANENT (75-YR) COVER LOAD AND 3) ALLOWABLE COVER WITH PARKED (1-WEEK) AASHTO DESIGN TRUCK. 7. REQUIREMENTS FOR HANDLING AND INSTALLATION: • TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. • TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 3". • TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION. a) THE ARCH STIFFNESS CONSTANT SHALL BE GREATER THAN OR EQUAL TO 450 LBS/FT/%. THE ASC IS DEFINED IN SECTION 6.2.8 OF ASTM F2418. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73' F 123° C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. 8. ONLY CHAMBERS THAT ARE APPROVED BY THE SITE DESIGN ENGINEER WILL BE ALLOWED. UPON REQUEST BY THE SITE DESIGN ENGINEER OR OWNER, THE CHAMBER MANUFACTURER SHALL SUBMIT A STRUCTURAL EVALUATION FOR APPROVAL BEFORE DELIVERING CHAMBERS TO THE PROJECT SITE AS FOLLOWS: • THE STRUCTURAL EVALUATION SHALL BE SEALED BY A REGISTERED PROFESSIONAL ENGINEER. • THE STRUCTURAL EVALUATION SHALL DEMONSTRATE THAT THE SAFETY FACTORS ARE GREATER THAN OR EQUAL TO 1.95 FOR DEAD LOAD AND 1.75 FOR LIVE LOAD, THE MINIMUM REQUIRED BY ASTM F2787 AND BY SECTIONS 3 AND 12.12 OF THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS FOR THERMOPLASTIC PIPE. • THE TEST DERIVED CREEP MODULUS AS SPECIFIED IN ASTM F2418 SHALL BE USED FOR PERMANENT DEAD LOAD DESIGN EXCEPT THAT IT SHALL BE THE 75-YEAR MODULUS USED FOR DESIGN. 9. CHAMBERS AND END CAPS SHALL BE PRODUCED AT AN ISO 9001 CERTIFIED MANUFACTURING FACILITY. oTou ADs.INc COVER PIPE CONNECTION TO END CAP WITH ADS GECSYNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH HIGHLY RECOMMENDS FLEXSTORM INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES CATCH BASIN OR MANHOLE SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24" [600 mm] MIN RECOMMENDED) INSPECTION & MAINTENANCE STEP 1) INSPECT ISOLATOR ROW PLUS FOR SEDIMENT SiteAssisf' FOR STORMTECH INSTALLATION INSTRUCTIONS VISIT OUR APP IMPORTANT - NOTES FOR THE BIDDING AND INSTALLATION OF MC-7200 CHAMBER SYSTEM 1. STORMTECH MC-7200 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A PRE -CONSTRUCTION MEETING WITH THE INSTALLERS. 2. STORMTECH MC-7200 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE'STORMTECH MC-7200 CONSTRUCTION GUIDE". 3. CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR EXCAVATOR SITUATED OVER THE CHAMBERS. STORMTECH RECOMMENDS 3 BACKFILL METHODS: • STONESHOOTER LOCATED OFF THE CHAMBER BED. • BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE - • BACKFILL FROM OUTSIDE THE EXCAVATION USING ALONG BOOM HOE OR EXCAVATOR. 4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. 5. JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. 6MAINTAIN MINIMUM -9" (230 Tim) SPACING BETWEEN THE CHAMBER ROWS. 7. INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12" (3001 INTO CHAMBER END CAPS. 8. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE MEETING THE AASHTO M43 DESIGNATION OF #3 OR #4. 9. STONE SHALL BE BROUGHT UP EVENLY AROUND CHAMBERS SO ASNOTTO DISTORT THE CHAMBER SHAPE. STONE DEPTHS SHOULD NEVER DIFFER BY MORE THAN 12" (3001 BETWEEN ADJACENT CHAMBER ROWS. 10. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND PRESERVE ROW SPACING. 11. THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIAL BEARING CAPACITIES TO THE SITE DESIGN ENGINEER. 12. ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH M INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECT THE SUBSURFACE STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF. 1. STORMTECH MC-7200 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-7200 CONSTRUCTION GUIDE". 2. THE USE OF EQUIPMENT OVER MC-7200 CHAMBERS IS LIMITED: • NO EQUIPMENT IS ALLOWED ON BARE CHAMBERS. • NO RUBBER TIRED LOADER, DUMP TRUCK, OR EXCAVATORS ARE ALLOWED UNTIL PROPER FILL DEPTHS ARE REACHED IN ACCORDANCE WITH THE "STORMTECH MC-35001MC-7200 CONSTRUCTION GUIDE'. • WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT CAN BE FOUND IN THE "STORMTECH MC-7200 CONSTRUCTION GUIDE". 3. FULL 36" (9001 OF STABILIZED COVER MATERIALS OVER THE CHAMBERS IS REQUIRED FOR DUMP TRUCK TRAVEL OR DUMPING. USE OF A DOZER TO PUSH EMBEDMENT STONE BETWEEN THE ROWS OF CHAMBERS MAY CAUSE DAMAGE TO CHAMBERS AND IS NOT AN ACCEPTABLE BACKFILL METHOD. ANY CHAMBERS DAMAGED BY USING THE "DUMP AND PUSH" METHOD ARE NOT COVERED UNDER THE STORMTECH STANDARD WARRANTY. CONTACT STORMTECH AT 1-888-892-2694 WITH ANY QUESTIONS ON INSTALLATION REQUIREMENTS OR WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT. INSTALL FLAMP ON 24" (6001 ACCESS PIPE PART #: MC720024RAMP MC-7200 CHAMBER 24" 1600 mm) HOPE ACCESS PIPE REQUIRED USE FACTORY PARTIAL CUT END CAP PART #: MC720DIEPP24B OR MC72001EPP248W MC-7200 ISOLATOR ROW PLUS DETAIL A. INSPECTION PORTS (IF PRESENT) A. 1. REMOVE/OPEN LID ON NVLOPLAST INLINE DRAIN A.2, REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3, USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG AA. LOWER A CAMERA INTO ISOLATOR ROW PLUS FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) As. IF SEDIMENT IS AT, OR ABOVE, r (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B. ALL ISOLATOR PLUS ROWS B. 1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW PLUS B.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW PLUS THROUGH OUTLET PIPE i) MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY A) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE 3.3. IF SEDIMENT IS AT. OR ABOVE, r (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2) CLEAN OUT ISOLATOR ROW PLUS USING THE JETVAC PROCESS A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 4W (1.1 m) OR MORE IS PREFERRED B. APPLY MULTIPLE PASSES OF JET/AC UNTIL BACKFLUSH WATER IS CLEAN C. VACUUM STRUCTURE SUMP AS REQUIRED STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1. INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. CONCRETE( PAVEN CONCRETE SLAB V (1501 MIN THICKNE STORMTECH CHAMBER OPTIONAL INSPECTION PORT /r MC-720D END CAP ONE LAYER OF ADSPLUS175 WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS 10.3' (3.1 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS )NCRETE COLLAR NOT REQUIRED IR UNPAVED APPLICATIONS W NVLOPLAST INSPECTION PORT BODY(PART# 270aAG41PKIT) OR TRAFFIC RATED BOX WISOLID LOCKING COVER 4' (100 mm) SDR 35 PIPE 4• (1001 INSERTA TEE TO BE CENTERED ON CORRUGATION VALLEY NOTE: INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION VALLEY. 4" PVC INSPECTION PORT DETAIL (MC SERIES CHAMBER) NITS ACCEPTABLE FILL MATERIALS: STORMTECH MC-7200 CHAMBER SYSTEMS AASHTO MATERIAL MATERIAL LOCATION DESCRIPTION COMPACTION / DENSITY REQUIREMENT CLASSIFICATIONS FINAL FILL: FILL MATERIAL FOR LAYER'D' STARTS FROM THE PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVED D TOP OF THE'C' LAYER TO THE BOTTOM OF FLEXIBLE ANY SOIUROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. NIA INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PAVEMENT OR UNPAVED FINISHED GRADE ABOVE, NOTE THAT CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS. PREPARATION REQUIREMENTS. PAVEMENT SUBBASE MAY BE PART OF THE'D' LAYER AASHTO I INITIAL FILL: FILL MATERIAL FOR LAYER'C' STARTS FROM THE GRANULAR WELL -GRADED SOIUAGGREGATE MIXTURES, c35% FINES OR A-1, A-2-4, A-3 BEGIN COMPACTIONS AFTER 24" (600 mm) OF MATERIAL OVER TOP OF THE EMBEDMENT STONE ('8' LAYER) TO 24'(600 mm) PROCESSED AGGREGATE. THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT OR 12" (3001 MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR SUBBASE MAY BE A PART OF Ti LAYER. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS WELL GRADED MATERIAL AND 95% RELATIVE DENSITY FOR LAYER. AASHTO I PROCESSED AGGREGATE MATERIALS. 3, 357, 4, 467, 5. 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS AASHTO M43' B FROM THE FOUNDATION STONE ('A' LAYER) TO THE 'C' LAYER CLEAN, CRUSHED, ANGULAR STONE 3.4 NO COMPACTION REQUIRED. ABOVE. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE CLEAN, CRUSHED, ANGULAR STONE AASHTO M43' PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE." SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. 3.4 PLEASE NOTE: 1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN CRUSHED ANGULAR. FOR EXAMPLE A SPECIFICATION FOR #4 STONE WOULD STATE: 'CLEAN, CRUSHED ANGULAR NO. 4 AASHTO M43 STONE". ( ) 2. STORMTECH COMPACTION REQUIREMENTS ARE MET FOR LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" (230 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. 4. ONCE LAYER'C' IS PLACED, ANY SOIUMATERIAL CAN BE PLACED IN LAYER TY UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR '0' AT THE SITE DESIGN ENGINEER'S DISCRETION. PERIMETER STONE (SEE NOTE 4) EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) 12"(30 ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR STONE IN A & B LAYERS SUBGRADE SOILS (SEE NOTE 3) PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) 'maOTTCAIOFHUXIB PAVEMENT FONUNPAVED INsr/ TioaW RE RUTTM MM VEHICLES WYOCCVF. 7.0' TCHEASE WVFR T03PIT•+Omml 24" (21 m) (600 MI MIN' MAX 12" (3001 MIN 60" (15251 I I L I I D DEPTH STONE TO BE DETERMINED JjJ-L=i11�11- I„ 1--1 _ IT-ATI-1 I 1=1 -III I I I BY SITE DESIGN ENGINEER 9' (230 mm) MIN (230 mm) MIN 100, (2540 mm) 12' (3001 MIN B. NOTES: 1. CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418 "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP)CORRUGATED WALL STORMWATER COLLECTION CHI CHAMBERCLASSIFICATION 60x10 1 2. MC-7200 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS", 3. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 4 PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 5. REQUIREMENTS FOR HANDLING AND INSTALLATION: • TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL. INTERLOCKING STACKING LUGS. • TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 3'. • TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION. a) THE ARCH STIFFNESS CONSTANT SHALL BE GREATER THAN OR EQUAL TO 450 LBSIFT!%. THE ASC IS DEFINED IN SECTION 6.2.8 OF ASTM F241 B. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73' F / 23' C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. UNDERDRAIN DETAIL NITS STORMTECH CHAMBER RMTECH END CAP 'LET MANIFOLD FOUNDATION STONE BENEATH CHAMBERS ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH END CAP WALL :GRATED RDRAIN 7 (20' INS' MC-7200 TECHNICAL SPECIFICATION NTS VALLEY STIFFENING RIB LOWER JOINT CORRUGATION 1m) CREST WEB UPPER JOINT CORRUGATION CREST STIFFENING RIB •} BUILD ROW IN THIS DIRECTION ` FOOT 60.0" ' 32.8' 0524 mm) 61.0" (a33 mm) 1 h m) INSTALLED FOUNDATION STONE M BENEATHCHAMBERS ADS GEOSYNTHETIC7 S 601T 100-0'(2540 mm) ..- 90.0"(2286mm) NON -WOVEN GEOTEXTILENOMINAL CHAMBER SPECIFICATIONS ...,ATE DESIGN ENGINEER SIZE (W X H X INSTALLED LENGTH) 100.0" X 60.0' X 79.1" (2540 mm X 1524 mm X 20101 4' (100 mm) TYP FOR SC-310 d SC,160LP SYSTEMS SECTION B-e CHAMBER STORAGE 175.9 CUBIC FEET (4.98 m') 6' (150 mm TYP FOR SC-740, DC-780. MC-3500, MC-4500 & MC-7200 SYSTEMS MINIMUM INSTALLED STORAGE" 267.3 CUBIC FEET ( WEIGHT (NOMINAL) 20510s. (92.9 92.9 kg) kg) NOMINAL END CAP SPECIFICATIONS 38.0" MCSERIESEND CAP INSERTION DETAIL SIZE (WXHXINSTALLED LENGTH) 90.0-X61.PX32.8" (2286 mm X 1549 Tim X 833 1 965mm) I` NTS END CAP STORAGE 39.5 CUBIC FEET (1.121 MINIMUM INSTALLED STORAGE' 115.3 CUBIC FEET (3261 WEIGHT (NOMINAL) 901bs. (40.8 kg) 12" (300 mm) MIN INSERTION MANIFOLD STUB MANIFOLD HEADER (r7 12"(300 MI MIN SEPARATION STORMTECH END CAP L 12'(300 mm) MIN INSERTION NOTE: MANIFOLD STUB MUST BE LAID HORIZONTAL FORA PROPER FIT IN END CAP OPENING. 'ASSUMES 12" (305 mm) STONE ABOVE, 9" (229 mm) STONE FOUNDATION AND BETWEEN CHAMBERS. 12" (305 mm) STONE PERIMETER IN FRONT OF END CAPS AND 40% STONE POROSITY. 12"(300 mm) MIN SEPARATION PARTIAL CUT HOLES AT BOTTOM OF ENO CAP FOR PART NUMBERS ENDING WITH "B" PARTIAL CUT HOLES AT TOP OF END CAP FOR PART NUMBERS ENDING WITH T END CAPS WITH A PREFABRICATED WELDED STUB END WITH 9M MANIFOLD HEADER MANIFOLD STUB PART # STUB B C MC72001EPP06T fi" (150 mm) 42,54' (1081 mm) - MC72001EPPD68 MC72001EPP08T 8" (2001 40,50" (10291 - MC72001EPP08B -- 1.01" (26 mm) MC72001EPP10T 10" (250 mm) 38.37" (975 mm) - MC72001EPP108 1.33(34 mm) 1r (300 mm) 35,89"(907 TIT) MC72001EPP12B 5 1.5(39 m MC72001EPP15T IV (375 mm 32.72'(831 mm) MC72001EPP158 1.70(4mml MC72001EPP18T 18"(450mm) 29.36" (746 mm) MC72001EPP188TW MC720P8 197_( m MC72001EPP18BW MC72001EPP24T 24' (600 mm) 23.05" (585 mm) - MC72001EPP24TW MC72001EPP248 2.26" (57 mm) MC72001EPP24BW MC72001EPP30BW 30' (7601 -- 2.95" (75 mm) MC72001EPP36BW 36'(9001 1 3.25"(831 MC72001EPP42BW 42" (1050 m R 3.55" (90 mm) NOTE: ALL DIMENSIONS ARE NOMINAL O 3 JN ��m� <=' w 0'^ bw paj OV V - ax� �W a� 9� gsg# 5� SHEET 3OF5 k N W!1 F a � >_ > c t (a La U 1))0 Q Z W 5 a fq x W 3 g 0 U x 5 0 O s 0 0 E 2 w, y E ' 6..0 m H Cc � t O� J � mm L =eM axe w0 O CUSTOM PREFABRICATED INVERTS 0 ARE AVAILABLE UPON REQUEST. 3 i m INVENTORIED MANIFOLDS INCLUDE 12-24" (300-600 mm) SIZE ON SIZE AND 15.48' (375-1200 Tim) ECCENTRIC MANIFOLDS. CUSTOM INVERT LOCATIONS ON THE MC-7200 END CAP CUT IN THE FIELD ARE NOT RECOMMENDED FOR PIPE SIZES GREATER THAN 10" (2501 THE INVERT LOCATION IN COLUMN'B' SHEET ARE THE HIGHEST POSSIBLE FOR THE PIPE SIZE. SOPS W 2 O In W (n F Os UU W ; )ZW W(n�W W Q 2 0 W Z J> ZUIJJ U)0 »<<<z< O) 2 1 z F �- )Z(K< 0 CL J 0 I] W Z z o Q a.J REVISIONS ' REV DATE COMMENT cHE�cxED ar 1 05/18/22 COUNTY COMMENTS P CM Know what§ 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.: V 192076 DRAWN BY: MEG / PM CHECKED BY: RTY DATE: 10/7/2021 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 BOHLERI 9100 ARBORETUM PKWY, SUITE 360 RICHMOND, VIRGINIA23236 Phone: (804)893-8200 VA@BohlerEng.com !;4.pLTH c% Lic. No. 0402056625 ;� 05/18/2022 4 SHEET TITLE: STORMWATER BMP DETAILS SHEET NUMBER: C-909 REVISION 1 - 05/18/22