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WPO202200002 Plan - VSMP 2022-05-19
ALBEMARLECOUNTY FINAL PLAN GENERAL NOTES General Construction Notes 1. Prior to any construction within any existing public right-of-way, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies occur the requirements of the permit shall govern. 2. All materials and construction methods shall conform to current specifications and standards of VDOT unless otherwise noted. 3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction. 4. All slopes and disturbed areas are to be fertilized, seeded and mulched. 5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes of 3:1 of better are to be achieved. 6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel. 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices. 8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe -Class HI. 9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). General Construction Notes for Streets (This list is in addition to the General Construction Notes) 1. All materials and construction must be tested and documented according to VDOT standards and specifications. 2. Surface drainage and pipe discharge must be retained within the public right-of-way or within easements prior to acceptance. All drainage outfall easements are to be extended to a boundary fine or a natural watercourse. 3. Guardrail locations are approximate. Exact length, location and appropriate end treatments will be field verified at the time of construction. Additional guardrail may be required at locations not shown when, in the opinion of VDOT (for public roads) or the County Engineer (for private roads), or designee, it is deemed necessary. When guardrail is required, it shall be installed four (4) feet offset from the edge of pavement to the face of guardrail, and roadway shoulder widths shall be increased to seven (7) feet. 4. Where urban cross sections are installed, all residential driveway entrances shall conform to VDOT CG-9(A, B or C). 5. Where rural cross sections are installed, all residential driveway entrances shall conform to VDOT standard PE-1. 6. Compliance with the minimum pavement width, shoulder width and ditch sections, as shown on the typical pavement section detail, shall be strictly adhered to. 7. Road plan approval for subdivisions is subject to final subdivision plat validation. Should the final plat for this project expire prior to signing and recordation, then approval of these plans shall be null and void. 8. All signs or other regulatory devices shall conform with the Virginia Manual for Uniform Traffic Control Devices and the Albemarle County Road Naming and Property Numbering Ordinance and Manual. 9. Traffic control or other regulatory signs or barricades shall be installed by the developer when, in the opinion of the County Engineer, or designee, they are deemed necessary in order to provide safe and convenient access. 10. The speed limits to be posted on speed limit signs are 5 mph below the design speed, or as determined by VDOT for public roads. 11. VDOT standard CD-1 or CD-2 cross -drains are to be installed under the subbase material at all cut and fill transitions and grade sag points as shown on the road profiles. 12. A video camera inspection is required for all storm sewers and culverts that are deemed inaccessible to VDOT or County inspections. The video inspection shall be conducted in accordance with VDOT's video camera inspection procedure. 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 m determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff - producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50150 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 10001bs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved b the County erosion control PP J PP Y tY inspector. 19, Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned gg g P Y P 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 17-204GJ 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17- 207B) General construction notes for Stormwater Management plans 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riser joints are to be watertight within stormwater management facilities. 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. U : 11 A 9, 1 1 \(@)� -Bom- SEU"'r�TION 2 WPO PLANS SITE DATA DEVELOPER/APPLICANT GREAT EASTERN MANAGEMENT 2619 HYDRAULIC ROAD CHARLOTTESVILLE, VA 22901 DAVID MITCHELL, E.I.T. PHONE: (434) 296-4109 FAX: (434) 963-2670 E-MAIL: david®southern-classic.corn ENGINEER TOWNES SITE ENGINEERING C/O BRIAN C. MITCHELL, P.E. 1 PARK WEST CIR., SUITE 108 MIDLOTHIAN, VA 23114 PHONE: (86) 748-9011 FAX: (86) 748-2590 E-MAIL: BMITCHELL®CCTOWNES.COM SOURCE OF TOPOGRAPHY BOUNDARY & TOPOGRAPHY SURVEY PERFORMED BY LOUISA AERIAL SURVEYS DATED 01/05/2012 HORIZONTAL DATUM: NAD83 MAGISTERIAL DISTRICT RIVANNA ZONING DISTRICT PD-MC (PLANNED DEVELOPMENT MIXED COMMERCIAL) TAX MAPS/PARCELS 03200-00-00-023EO (PART OF) 03200-00-00-023AO 03200-00-00-02380 03200-00-00-029CO 03200-00-00-023DO 03200-00-00-029FO 03200-00-00-023GO 03200-00-00-029HO ZONING ZMA-2000-00009 ZMA-2013-00007 ARB APPROVAL # NOT APPLICABLE PROJECT AREA ACREAGE 67.44 AC RESERVOIR WATERSHED NORTH FORK RIVANNA - JACOBS RUN FEMA MAP 51003CO145D / DATED FEB. 4, 2005 / ZONE 'X' UTILITIES CONTACT INFO: RAPPAHANNOCK ELECTRIC COOPERATIVE (REC) CHARLOTTESVILLE CITY GAS STEVE COATES DISTRIBUTION DESIGNER 13252 CEDAR RUN CHURCH ROAD CULPEPER, VA. 22701 PHONE: (540) 727-2116 PHILIP GARBER CHIEF GAS ENGINEER 305 4TH STREET NW CHARLOTTESVILLE, VA 22903 PHONE: (434) 970-3811 Rivanna Water & Sewer Authority (RWSA) General Water & Sanitary Sewer Notes Last Revised: February 2011 1. All materials and methods of construction shall comply with the latest version of the General Water and Sewer Construction Specifications as adopted by the Albemarle County Service Authority on January 15, 1998, except as modified below or modified in Special Notes. 2. RWSA shall approve all construction materials and methods of construction. A preconstruction conference shall be held with RWSA prior to the start of any work. 3. The contractor shall be responsible for notifying Miss Utility (1-800-552-7001). 4. RWSA Engineer (Victoria Fort at (434) 977-2970 mt. 205) shall be notified three business days prior to the start of construction. 5. All work is subject to inspection by RWSA staff. No tie-ins to the existing system shall be made without coordination with and the presence of RWSA staff. No work shall be conducted on RWSA facilities on weekends or holidays without special written permission from RWSA. 6. For sanitary sewer line construction: RWSA may require bypass pumping for tie-ins to the existingsystem. All doghouse manholes must be ensure -tested before a connection is made to Y g Pr the system. 7. The location of existing utilities as shown on the plans is from data available at the time of design and is not necessarily complete or accurate. The Contractor shall be responsible for the verification of the location size and depth of all existing utilities, both surface and subsurface. The Contractor shall immediately notify the Engineer of any discrepancies between the plans and field conditions. The Contractor shall use due diligence to protect all utilities and structures from damage at all times, whether shown on the plans or not. Damage to any existing utilities shall be repaired by the Contractor to the original condition at no additional cost to the Owner. 8. Erosion and sediment control facilities shall not be permitted in the RWSA easement without special written permission from RWSA. No grading shall be permitted in the RWSA easement unless permitted otherwise byRWSA in writing. 9. No blasting shall be permitted within 100 feet of RWSA facilities without written permission and RWSA approval of the blasting plan. Ground monitoring during blasting and a prebl sat survey may be required. For blasting within 100 feet of my operative RWSA sewerlines, bypass pumping and/or pre- and post -CCTV may be required. RWSA may also require certification from a licensed professional engineer staring that the proposed blasting will not damage any RWSA facilities. Damage to any utilities due to blasting shall be repaired by the Contractor to the original condition at no additional cost to the Owner. 10. 1he contractor shall observe minimum separation requirements for utility crossings. When a crossing is made under an existing facility. adequate structural support shall be provided for the existing pipe. the area of the crossing shall be backfilled with compacted 57 stone to the springline of the existing pipe. 11. New water main installations shall be pressure tested, chlorinated, flushed and have water samples approved prior to marring any permanent connection to the public water system. Approved methods of filling and flushing new water mains will be required to prevent any contamination of the public water system. 12. All easements for new RWSA facilities shall be recorded prior to placing the new facilities into service. 13. No permanent structural facilities will be permitted in the RWSA easement. This includes building overhangs, retaining walls, faoters for any structure, drainage structures, etc. Trees are not permitted in the RWSA easement. ALL FILL AREAS TO BE INSTALLED & STRUCTURAL FILL SUITABLE FOR ROAD OR BUILDING CONSTRUCTION & TO BE TESTED BY GEOTECHNICAL PROFESSIONAL ENGINEER. CONCRETE SHALL BE CLASS A-3 PAVING CONCRETE ACCORDING TO THE CURRENT VIRGINIA DEPARTMENT OF TRANSPORTATION'S ROAD AND BRIDGE SPECIFICATIONS AND APPROPRIATE SUPPLEMENTAL SPECIFICATIONS. THE CONCRETE PAVEMENT SHALL BE PLAIN JOINTED WITH A RECOMMENDED JOINT SPACING OF 15 FEET OR CONTINUOUSLY REINFORCED CONCRETE PAVEMENT (CRCP) IS ALSO CONSIDERED AN ACCEPTABLE OPTION. IN THE EVENT OF ANY DAMAGE TO, OR DISLOCATION, OR DISTURBANCE OF ANY UNDERGROUND UTILITY LINE INCLUDING ITS APPURTENANCES, COVERING AND COATING, IN CONNECTION WITH ANY EXCAVATION OR DEMOLITION, THE PERSON RESPONSIBLE SHALL IMMEDIATELY STOP EXCAVATION AROUND THAT UTILITY LINE UNTIL THE IMPACTED UTILITY REPRESENTATIVE ARRIVES AND EVALUATES THE DAMAGE OR DISTURBANCE. IMPORTANT: IF A NATURAL GAS LINE IS DAMAGED RESULTING IN THE RELEASE OF NATURAL GAS, IMMEDIATELY SHUT DOWN ANY EQUIPMENT AND MOVE PEOPLE TO A SAFE PLACE. THEN, IMMEDIATELY DIAL 911 AND CHARLOTTESVILLE CITY GAS AT (434) 970-3800. qM Q O� VARlOC86 r TOTAL LAND OF DEVELOPMENT = 268 AC to � � T p� 00 UUU���UUU NOT TO SCALE AIRPORTG��S ®PREVIOUS DISTURBED AREA = 68.78 AC (WPO#201500073, WPO#201500078, WPO#***) PROPOSED DISTURBED AREA = 67.44 AC (WPO#***) TOTAL DISTURBED AREA = 136.22 AC ROAD AND DRAINAGE 1 CULVERT OR STORM SEWER M3 ME (WITH STRUCTURE NO.) EXISTING CULVERT OR STORM SEWER PIPE DROP INLET & STRUCTURE NO. O PROPOSED MANHOLE EXISTING MANHOLE PAVED DITCH JUTE MESH OR SODDED DITCH EARTH DITCH - GRASS LINED �► ---too-- EXISTING CONTOUR PROPOSED CONTOUR 100 EXISTING SPOT ELEVATIONS ♦ 100.00 PROPOSED SPOT ELEVATIONS (T/C - TOP OF CURB) #1 BENCH MARK & REFERENCE NO. to VDOT STANDARD STOP SIGN LEGEND +1 M21:i -----�- EXISTING SANITARY SEWER PROPOSED SANITARY SEWER T Tg SANITARY SEWER SERVICE CONNECTIONS 3 12600.00 MANHOLE NO. W/ STATION OR 150500.00 COORDINATE LOCATION WATER - - - - - - - - - EXISTING WATERLINE PROPOSED WATERLINE 1' 1' PROPOSED WATERLINE SERVICE CONNECTION GATE VALVE FIRE HYDRANT ASSEMBLY TEE OR TAPPING SLEEVE CROSS BLIND CAP t REDUCER BORE CROSSING ALL HOUSES WILL REQUIRE SPLASH BLOCKS FOR DOWNSPOUTS ALL SLOPES STEEPER THAT 3:1 WILL REQUIRE A LOW -MAINTENANCE GROUND COVER Know what's below. Call before you dig. MISS UTILITY DESIGN TICKET #___________ & #------- _- CONTRACTOR SHALL CALL MISS UTILITY AT 811 PRIOR TO THE START OF CONSTRUCTION SECTION 2 IS PART OF THE OVERALL NORTH POINTE DEVELOPMENT WHICH OBTAINED A 2009 VSMP GENERAL PERMIT AND REISSUANCE OF A 2014 VSMP GENERAL PERMIT. AS SUCH THIS PLAN HAS BEEN DESIGNED USING PART IIC TECHNICAL CRITERIA OF THE VSMP REGULATIONS. IN ADDITION, FUTURE SECTIONS OF THE NORTH POINTE DEVELOPMENT SHALL BE DESIGNED UTILIZING THE PART IIC TECHNICAL CRITERIA OF THE VSMP REGULATIONS AS LONG AS VSMP PERMIT (VAR1OC86) REMAINS IN EFFECT, WHICH IF REISSUANCE IS PERFORMED INCLUDES UP TO TWO 5 YEAR PERMIT CYCLES AND AS PER THE EMAIL CONFIRMATION FROM JOHN ANDERSON/ALBEMARLE COUNTY ECONOMIC DEVELOPMENT DATED NOVEMBER 12, 2015. EROSION CONTROL EROSION CONTROL DEVICES AS PER VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK STD. & SPEC. PCE 3.02 CONSTRUCTION ENTRANCE SF xi7l7C 3.05 SILT FENCE 3.07 IP INLET PROTECTION 14v� 3.09 DD TEMPORARY DIVERSION DIKE ST 3.13 TEMPORARY SEDIMENT TRAP ROCK CHECK DAM QQQQQ LIMITS OF CONSTRUCTION TS 3.31 TEMPORARY SEEDING PS 3.32 PERMANENT SEEDING MU 3.35 MULCHING DL 3.39 DUST CONTROL LOCATION MAP: 1 "=2,000' APPLICANTS NAME GREAT EASTERN MANAGEMENT SPECIAL USE PERMIT: SP-2002-72 ZONING: ZMA-2000-00009, ZMA-2013-00007 ARB: N/A ALBEMARLE COUNTY DEPARTMENT APPROVAL: APPROVALS DEPARTMENT OF COMMUNITY DEVELOPMENT DATE O 0 lid Z co 0��,� C> �co O"'10 �r W�� CLU Z U Z rl 0~ O W ir.4c O O t- arc a. r� O g O U O \ a PLANNING/ZONINGENGINEER INSPECTION ARB DEPARTMENT OF FIRE & RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARTMENT OF TRANSPORTATION HEALTH DEPARTMENT C.)RIAN O w Q CDATE �EpLTH PCHELI C, MI Lic, No, 035724 1, 05/18/2022 rESS/ONAL ENO\ Q � ~' q I O Q) V N t� O C� V �i r�^ REVISIONS IT INDEX TO SHEETS 1EET # LATEST REVISION DATE CONTENTS OF SHEET C-1 05-18-22 COVER SHEET C-1A SPECIAL USE PERMIT AND ZMA PROFFERS C-1B MODIFIED APPLICATION PLAN C-2 05-18-22 EXISTING CONDITIONS & DEMOLITION PLAN C-3 05-18-22 EROSION & SEDIMENT CONTROL - PHASE I C-4 05-18-22 EROSION & SEDIMENT CONTROL - PHASE II C-5 05-18-22 EROSION & SEDIMENT CONTROL NARRATIVE C-5A 05-18-22 EROSION & SEDIMENT CONTROL DETAILS C-58 05-18-22 EROSION & SEDIMENT CONTROL DETAILS C-6 05 18 22 GRADING PLAN C-6A 05-18-22 GRADING PLAN C-6B 05-18-22 GRADING PLAN C-6C 05-18-22 GRADING PLAN C-61D 05-18-22 DRAINAGE STRUCTURE SUMMARY C-7 05-18-22 HYDRAULICS C-8 05-18-22 SWM COMPLIANCE - PRE -DEVELOPMENT CONDITION 05/18/22 PER C0 C-9 05-18-22 SWM COMPLIANCE - POST -DEVELOPMENT CONDITION C-10 05-18-22 SWIM COMPLIANCE CALCULATIONS - SECTION 1 C-10A 05-18-22 SWIM COMPLIANCE CALCULATIONS - SECTION 2 C-11 05-18-22 CBPA COMPLIANCE PLAN C-11A 05-18-22 CBPA COMPLIANCE CALCULATIONS C-12 05-18-22 BIO-RETENTION FILTERS C-12A 05-18-22 BIO-RETENTION FILTER LANDSCAPING DATE 01-20-2022 C-13 05-18-22 POLLU110N PREVENTION PLAN O 2 ZD Y U) Q 44 U BRIAN C. 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II • L wKZ�AR►4.�%t!1►`�<�?Mrr1i4,�\.. `�'�lyi„lIMNMk.<t yVIN�M/�H MMh'�I Y`cWJA'� ��__:_ .._ �� Mv;�4►v►• �-�s�`�,b"v��r►. rAP�rAR�'t.,�VW� �N�jy.•1"';�IIiaAI ___ __ - '�` Me`!1►► �ry;�� M IV� MMNMNINM�"M � r����rta..�`�► y�,�j�;h �M/IINNN���NN�M `• AIW 4 ,• / INyy� � I ' • , , Mw'M�IMM ri 0 rn C ,11 a0 O �J o lit U O � U O Iz :W �� v Z U r_� O W Q) .2 I co Cllqdl W O --I d _ a*o -1 N N O U O N L) O O y. a° 0 4 0 0 U Z N Q •3 c d E o+ p,LT H 0 c T c U y BRIAN C. MIYCHELL 1 II o Lic, No, 035724 0511812022 P �FSSIONAL ENO\ a N c W c 0 �I c �n "V w 7-4 I 0 3 V rr^^ q 0 0 W 6 w t -,;Zq N q o [O c o ^I O `8 0 ti c o C ce) O N 0 .L- REVISIONS cm DATE ITEM w 05118122 PER COMMENTS •' In N N C 3 H 0 �T ° a 0 a DATE 01_ O_- zz SCALE AS SHOWN 0 o PROJECT MANAGER BRIAN C. MITCHELL, P.E. c .N v DESIGNED BY BCM / LEN r CHECKED BY -° c ° PROJ.# c z0140065 3 0 SHEET # rn c c W 41 c 3 H N N O N 0 Z BRIAN C. MI CHELL o Lic, No, 035724 -o d \40511812022 �FSSIONAL0 ,0, a N w C N W c O U C w L O V � 3 N 3 W q� E N ti �N q ° p4 W U �w 0 DO 0 � oCL REVISIONS DATE r 01-z0-20zz n�u 1"=100' c 0 PROJECT MANAGER BRIAN C. MITCHELL, P.E. T .N v DESIGNED BY BCM / LEN r CHECKED BY a c 0 PROJ.# c .3 20140065 0 SHEET # � C - 4 CONSTRUCTION NARRATIVE THIS PROJECT INVOLVES THE CONSTRUCTION OF A 162-LOT SINGLE-FAMILY RESIDENTIAL DEVELOPMENT THAT IS PART OF THE OVERALL NORTH POINTE DEVELOPMENT. THE PROJECT ALSO INVOLVES THE INSTALLATION OF TWO BIO- RETENTION BASINS. THE TWO PROPOSED AND FOUR EXISTING BMPS HAVE BEEN DESIGNED TO COLLECTIVELY ADDRESS THE WATER QUALITY AND QUANTITY ASSOCIATED WITH THIS RESIDENTIAL DEVELOPMENT, THE FUTURE APARTMENT SITE, AND A PORTION OF A FUTURE RESIDENTIAL DEVELOPMENT EAST OF THIS PROJECT. THE DISTURBED AREA ASSOCIATED WITH THIS PROJECT IS APPROXIMATELY 51 ACRES. EXISTING SITE CONDITIONS THE EXISTING SITE IS MOSTLY FORESTED. THE MAJORITY OF THE SITE SLOPES NORTHWEST TO RIVANNA RIVER. THE SITE CONTAINS WATERS OF THE U.S. THAT SHALL REMAIN UNDISTURBED EXCEPT FOR THE PERMITTED AREAS TO BE IMPACTED. GRAVITY SANITARY SEWER AND A 12" WATERLINE ARE AVAILABLE FOR CONNECTION AS PART OF THE NORTH POINTE SEC77ON ONE PROJECT. EACH WILL BE EXTENDED TO SERVICE THIS PROJECT. ADJACENT AREAS THE SITE IS BORDERED BY GRACE BAPTIST CHURCH AND FURTURE DEVELOPMENT TO THE WEST, PRITCHETT DRIVE (VA 785) TO THE SOUTH, AND FORESTED PARCELS TO THE EAST. OFFSITE AREAS THERE IS NO OFFSITE WORK PROPOSED WITH THIS PROJECT. SOILS THE SITE IS CHARACTERIZED BY SANDY, LEAN CLAY (CL) AND SILTY, LEAN SAND (SM). CRITICAL AREAS SENSITIVE AREAS INCLUDE WETLANDS AND WATERS OF THE U.S., CONTRACTOR MUST CONTROL EROSION AND SEDIMENTATION FROM LAND DISTURBING ACTIVITIES AND PREVENT THEM FROM ENTERING WATERWAYS. THIS SITE IS SET UP TO DRAIN TO TWO SEDIMENT TRAPS AND A SEDIMENT BASIN WHICH WILL BE MAINTAINED UNTIL THE SITE IS STABILIZED. THE SITE CONTAINS STEEP SLOPES THROUGHOUT THE DISTURBED AREAS. THESE DISTURBED AREAS WILL NEED TO BE SEEDED AND STABILIZATION ACHIEVED TO PREVENT EROSION FROM OCCURRING AS THE WORK PROGRESSES. THE CONTRACTOR SHOULD ALSO TAKE CARE TO KEEP CONSTRUCTION ENTRANCES IN GOOD WORKING CONDITION IN ORDER TO NOT TRACK MUD ONTO EXISTING ROADWAYS. EROSION AND SEDIMENT CONTROL MEASURES - PHASE I 1 - ALL EROSION AND SEDIMENT CONTROL MEASURES MUST BE INSTALLED, MAINTAINED AND REMOVED IN ACCORDANCE WITH THE CRITERIA AND GUIDELINES CONTAINED IN THE CURRENT EDITION OF THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. 2 - PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR 3 - WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED 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 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. 4 - UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A - NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B - EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C - EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D - RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. E -APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. 5 - ADDITIONAL EROSION CONTROL MEASURES MAY BE REQUIRED BY ENVIRONMENTAL ENGINEERING IF WARRANTED BY FIELD CONDITIONS. 6 - THE TEMPORARY SEDIMENT TRAPS OR SEDIMENT BASIN SHALL NOT BE REMOVED UNTIL APPROVED BY ENVIRONMENTAL ENGINEERING. 7 - A VDOT LAND USE PERMIT IS REQUIRED FOR THIS PROJECT PRIOR TO ISSUANCE OF A LAND DISTURBANCE PERMIT. 8 - AT THE TIME OF THE PRE -CONSTRUCTION MEETING, TWO STANDARD SIGNS MUST BE INSTALLED ON EACH SIDE OF THE CONSTRUCTION ACCESS. THESE SIGNS SHOULD STATE EITHER "CONSTRUCTION ENTRANCE AHEAD" OR "TRUCKS ENTERING HIGHWAY'. CONSTRUCTION SEQUENCE TO BE AS FOLLOWS: 1. THE OWNER MUST GIVE THE COUNTY INSPECTOR 48 HOURS NOTIFICATION TO SCHEDULE A PRE -CONSTRUCTION MEETING THAT WILL BE HELD AT COUNTY OFFICE BUILDING LOCATED AT 401 MCINTIRE ROAD FOR THE ISSUANCE OF A LAND DISTURBANCE PERMIT. 2. THE CERTIFIED RESPONSIBLE LAND DISTURBER (CRLD) MUST ATTEND THE PRE - CONSTRUCTION MEETING. 3. INSTALL CONSTRUCTION ENTRANCE ON THE ENTRANCE DRIVE AND PROFFIT ROAD LOCATIONS AS SHOWN. 4. CLEAR PRELIMINARY LIMITS OF DISTURBANCE AS NEEDED TO INSTALL SEDIMENT TRAPS AND BASINS. 5. INSTALL SEDIMENT BASIN 1 AS WELL AS SEDIENT TRAPS 1, AND 2. GRADE IN SEDIMENT BASINS AND INSTALL THE RISER, BARREL, AND OUTLET PROTECTION AS SHOWN ON PLANS. CONTRACTOR TO REFER TO THE ROAD PLANS FOR THIS PROJECT FOR DETAILS ON THE POND GRADING, INSTALLATION OF THE CLAY CORE WITHIN THE DAM, AND THE 12" DRAIN, VALVE AND CONCRETE SLAB REQUIRED FOR THE BASIN. 6. CLEAR PRELIMINARY LIMITS OF DISTURBANCE IN THIS AREA AS SHOWN NECESSARY TO INSTALL ASSOICATED TEMPORARY DIVERSION DIKES AND SILT FENCE TO DIRECT RUNOFF TO SEDIMENT BASIN 1 AS WEL AS SEDIMENT TRAPS 1, AND 2. 7. INSTALL ALL TREE PROTECTION AND SILT FENCE S. CONTRACTOR SHALL CLEAR SEDIMENT TRAPS 1 - 2 AND SEDIMENT BASIN 1 OF SEDIMENT THAT BUILDS UP OVER TIME AND PERFORM ANY REPAIRS NEEDED FOR THE TRAPS AND BASINS TO FUNCTION PROPERLY. 9. AFTER THE INSTALLATION OF ALL SEDIMENT TRAPS, SEDIMENT BASINS, AND OTHER INITIAL EROSION CONTROL (EC) MEASURES, THE COUNTY INSPECTOR AND CRLD MUST MEET TO INSPECT EC MEASURES BEFORE PROCEEDING TO PHASE E. PERMANENT STABILIZATION THE CONTRACTOR SHALL PROVIDE GRASS STABILIZATION ON ALL DENUDED AREAS PRIOR TO TURNOVER OF THE PROJECT TO THE DEVELOPER. SEED SHALL BE APPLIED AS DICTATED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK STORMWATER RUNOFF CONSIDERATIONS SIX BMPS HAVE BEEN DESIGNED TO COLLECTIVELY ADDRESS THE WATER QUANTITY ASSOCIATED WITH THIS RESIDENTIAL DEVELOPMENT, THE FUTURE APARTMENT SITE, AND THE PREVIOUSLY APPROVED RESIDENTIAL SECTIONS WEST OF THIS SECTION. MS-19 IS BEING ACHIEVED WITHIN THE NATURAL CHANNELS THROUGH THE STORM BEING CONTAINED WITHIN THE CHANNEL BANKS AND NOT CAUSING THE CHANNEL BEDS TO ERODE. MAINTENANCE IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. SITE INSPECTIONS SHALL BE CONDUCTED AS SPECIFIED IN VAR10-PART II-F. ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS: a. SEDIMENT TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK b. THE BASIN EMBANKMENTS SHOULD BE CHECKED REGULARLY TO ENSURE THAT THEY ARE STRUCTURALLY SOUND AND HAVE NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION EQUIPMENT. THE BASINS 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. C. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. SEDIMENT DEPOSIT SHOULD BE REMOVED AFTER EACH STORM EVENT. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM TO THE EXISTING GRADE, PREPARED AND SEEDED. D. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. E. DIVERSION DIKES SHALL BE INSPECTED AFTER EVERY STORM EVENT AND REPAIRS MADE TO THE DIKES, FLOW CHANNELS, 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. DUST CONTROL THE FOLLOWING TEMPORARY DUST CONTROL MEASURES SHALL BE USED DURING CONSTRUCTION: - VEGETATIVE COVER: IN AREAS SUBJECT TO LITTLE OR NO CONSTRUCTION TRAFFIC, A VEGETATIVE STABILIZED SURFACE WILL REDUCE DUST EMISSIONS. - MULCH: NOT RECOMMENDED FOR AREAS WITHIN HEAVY TRAFFIC PATHWAYS. - IRRIGATION: SITE TO BE SPRINKLED WITH WATER UNTIL THE SURFACE IS WET. REPEAT AS NEEDED. IT OFFERS FAST PROTECTION FOR HAUL ROADS AND OTHER HEAVY TRAFFIC ROUTES. IN ADDITION TO THE TEMPORARY DUST CONTROL MEASURES, PERMANENT METHODS SHALL BE APPLIED AND THEY ARE AS FOLLOWS: - PERMANENT VEGETATION: APPLY PERMANENT SEEDING (PER STD 3.32). EROSION AND SEDIMENT CONTROL MEASURES - PHASE E 1 - ALL EROSION AND SEDIMENT CONTROL MEASURES MUST BE INSTALLED, MAINTAINED AND REMOVED IN ACCORDANCE WITH THE CRITERIA AND GUIDELINES CONTAINED IN THE CURRENT EDITION OF THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. 2 - PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 3 - WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED 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 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. 4 - UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A - NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B - EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C - EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING ➢EVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D - RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. E - APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. 5 - ADDITIONAL EROSION CONTROL MEASURES MAY BE REQUIRED BY ENVIRONMENTAL ENGINEERING IF WARRANTED BY FIEL➢ CONDITIONS. 6 - THE TEMPORARY SEDIMENT TRAPS OR SEDIMENT BASIN SHALL NOT BE REMOVED UNTIL APPROVED BY ENVIRONMENTAL ENGINEERING. 7 - A VDOT LAND USE PERMIT IS REQUIRED FOR THIS PROJECT PRIOR TO ISSUANCE OF A LAND DISTURBANCE PERMIT. 8 - AT THE TIME OF THE PRE -CONSTRUCTION MEETING, TWO STANDARD SIGNS MUST BE INSTALLED ON EACH SIDE OF THE CONSTRUCTION ACCESS. THESE SIGNS SHOULD STATE EITHER "CONSTRUCTION ENTRANCE AHEAD" OR "TRUCKS ENTERING HIGHWAY". CONSTRUCTION SEQUENCE TO BE AS FOLLOWS: 1. CLEAR AND GRUB TO FINAL LIMITS OF CLEARING. 2. INSTALL ADDITIONAL SILT FENCE AS SHOWN ON THE PLANS. 3. BEGIN SITE GRADING OPERATIONS. 4. INSTALL SANITARY SEWER. 5. GRADE ROADWAYS TO SUBGRADE. 6. INSTALL STORM SEWER PIPES AND STRUCTURES, INSTALLING INLET PROTECTION FOR THE DRAINAGE INLETS AS PROGRESSION OCCURS. 7. INSTALL WATERLINE. S. INSTALL CURB AND GUTTER, STONE, AND PAVEMENT. 9. SEED ALL DENUDED AREAS. 10. ONCE LAND DISTURBANCE AREAS HAVE BEEN FULLY STABILIZED, CONTRACTOR SHALL REMOVE SEDIMENT TRAPS AND OTHER EC DEVICES (WITH EXCEPTION OF THE SEDIMENT BASINS) UPON APPROVAL OF ENVIRONMENTAL INSPECTOR. 11. ONCE SEDIMENT TRAPS 1 AND 2 ARE REMOVED, PERMANENT BIOFIOLTERS SHALL BE INSTALLED, RESPECTIVELY. THE SEDIMENT BASINS SHALL REMAIN AS TEMPORARY SEDEv1ENT BASINS UNTIL THE FUTURE APARTMENT SITE ARE CONSTRUCTED. ONCE THESE FUTURE SITES ARE STABILIZED, THE BASINS MAY BE CONVERTED TO PERMANENT SWM/BMPS. O O C O O O lit U COD o ~ U U it •� mi �0r N � �51 � O � O O �L) O�y A a O rn c c w °' 41 c 0 H N N 0 N 4 BRIAN C. MI CHELL o Lic, No, 035724 -o p \40511812022 �FSSIONAL ENG\� 2 N c 0 0 c 0 U c ti •c L � o r q0.1 C9 3 E v 1 W Q) w r ti c 0 U c 0 01) o� 0 CL REVISIONS DATE r 01-z0-20zz n�u AS SHOWN c o r PROJECT MANAGER BRIAN C. MITCHELL, P.E. T .N v DESIGNED BY BCM / LEN r CHECKED BY ° c 0 PROJ.# c .3 20140065 0 SHEET # C - 5 jO Vj�JfilJ OJN 1� �� i.F• LyY ♦•, ♦S (1uvls L,:%c:(.. STONE CONSTRUCTION ACCESS ASPHALT PAVED WASHRACK ExIS TING 27 29 PA rNF T 2MIN.- NU Lxl cV L hDll L-0 `POSITIVE DRAINAGE TO SEDIMENT OF IINCR_�5 4N E.,2S5 OPERAT V TRAPPING DEVICE PLAN �1%' VIV, POSITIVE DRAINAOC TO SEDIMENT 2 TRAPPING DEVICE FN LT" 'LOT"� SECTION A -A A annuumn wore, faP of 1 inch unnf be Installed with a ntiubumn 1 Inch baucock shutoff cah e u Thv, a a'a.h ho-. a with a NTmeter PI s of 1. � inches for ads, oafs 7 � li cue sea ,e � ITT �T' T con 1 nt pres hue ..h fen nn .t l e cameo vv 5uu The entrance to an appmTed setllm, area to ranoT a ,wive:®d. 411-edunent shall be prevented from ente,Wna stone chain'., chtchen o, watercoauxes. PAVED WASH RACK nC S.^.A-L PIPE OUTLET CONDITIONS oP A A 3.18 NPE OUTLET TO FLAT JIM WITH NO DEFUIED MANNEL I , ,weew I' II- \ I I '�' I 'Ill - - - - - II - c• �• e M�1 - �. Hill WA r ..sew .. • • • ..sew .. • • • .. • • 1 • w • • • • • ... 1 I 1 .I'. x 1 .. w ... w .... w.• I • a w. 1 • w .... w ... 1 .. • ... 1•.e.•.e w.e • .... • . • • • . 1 • • .... • ... e.•.e.•.e. ••••• :.e a el \ - - - - - - - -.e.-- - - _III = luul- -lour- r . - --- ! � 4 ♦G . �:. -¢ '°;• •r.� .� _;!_ �. .... ,� i .;._ a! ,..., � -- i M � • Xi7a i / o / c •sl -I . r •I r •.I .- 1• .- -a � a gT dtlepted Rem Y6 MC YMaL UG-4 Y1A � AND BRUCE STANDARDS ROCK CHECK DAM c0 P SILT FENCE DROP INLET 3.zo s,o7 PROTECTION 2 ACRES OR LESS OF DRAINAGE AREA: T X 4• WOOD FRAME DROP INLET M1M GRAVE FLOW Source: Va. D31PC Plate 3.15-1 SOURCE: VA. DSWC EC-3 MAT TO BE INSTALLED ON ALL SLOPES STEEPER THAN 3:1 EC-3 TYPICAL INSTALLATION AT END OF PIPE STAKING DETAIL SOL STABLIZATON MAT MAY BE USED N CONJUNCTION WITH STANDARD 1� EC-1 EROSION CONTROL STONE AT OUTLET END OF PPE. 7j5W ITS I 3'OVERLAP Jl BE ROLLS 3 OAKCS OR %NS I ENTRENCH EDGES OF BENCHEMATERIALS ES I* 8d CHECK SLOT 25'O.C. SVERE 'y CLOSED CHECKSSLOT r-r3et To e"3" OVERLAP '.•x ,• e" TD S" TRAIaVERSE CIECA SLOT TO !E THE M�AACCTU�SORDANCE REECOOMENDATION FOR PREFERRED INSTALLATION. � TRANSVERSE OPEN CHECK SLOT V DITCH NOTES: 1'-2" 1. STAKES SHALL BE WOOD OR MET& AS RECOIMEIDED BY FINE MANFALTLRER AND SHALL BE A /♦1AAI OF V" IN LENGTH. IN SANDY SOLS METAL STMES A Lw1NM OF 13" N LENGTH SHALL BE USED. 2. SOIL STIBLI2ATDN MAT TYPE AND B ARE TO BE N ACCORDANCE WITH THE APPROVED PRODUCTS LIST. 21. 3. SOL STABILIZATION MAT SHOULD BE I STALLED TO THE SHOULDER BREAK PONT OR EXISTING GROUND THEN EMBEDDED 8'. MATEMUL ON BOTH SIDES OF THE DDCH SHALL BE NSTALLED TO THE SALE ELEVATIONS. t F{{'sf 1 1 t 4. IF MORE THAN 3 LINES OF MATERA- ARE REOLRED PARALLEL TO THE Q OF THE DITCH, WTERAL SHILL BE HSTALLED PERPENDCILNt TO THE CENTER LINE OF THE DITCH, STARTING AT THE LOWEST EL ELEVATION THE DITCH. OF UPSTREAM AND DOWNSTREAM TERMINAL 3 ROT'S FOR SOURCES OF APPROVED MATERIALS SEE VDAPPROVED PROCIICTS LIST FOR SED. EC-3. YPE A OR B. RETION REFERRENCCE SOIL STABILIZATION MAT DITCH INSTALLATION TYPE A ORB `VDOT ROAR ANDTE EROGE Ds REASON GATE DA HEFTSTANI SLEET 1 OF 3 244 ens ,u.D3 YMMA DEPARTMENT OF TRA45"TADON 6" BEND FOR 4"x4" DOWNSPOUTS CONCRETE SPLASH BLOCK FINISHED GROUND BUILDING WALL TYPICAL SPLASH BLOCK DETAIL NOT TO SCALE PERSPECTIVE VIEWS ELEVATION OF STAKE AND FABRIC ORIENTATION 3• DETAIL A SPECIFIC APPLICATION I RIPRAP THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER PLATE. 3.20-1 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 Desian Manual 1988 PLATE 3.07-1 SOURCE: VA. DSWC PLATE 3.09-1 SOURCE: VA. DSWC PLATE. 3.13-2 ♦I•��Lrlt�"l r ♦I've •:�j'/. wsf. jam! 111111=Nip. sS,A•gee�g-� � .n =1�I=� Ise!=aEu rY� III=III I II_IIII�IIIIII �IIIIII u�- THIS METHOD OF INLET PROTECTION IS APPLN:ABLE AT CURB INLETS WHERE PENDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO 04USE INCONVENIENCE OR DAMAGE TO ADUACENT STRUCTURES AND UNPROTECTED AREAS. • GRAVEL SHALL BE VDOT /3, 1357 OR 3 COARSE AGGREGATE SOURCE.' VA. DSWC PLATE 3.07-I TABLE 3.32-D (Revised June 2DD3) SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA SEED' LAND USE SPECIES APPLICATION PER ACRE Minimum Core Lawn TDII Fescue 95-100X CV dential) Perennial Ryegrass Kentucky Bluegrowl 0-5% 0-5% TOTAL 175-200 bs High Maintenance Lawn Tall Fescuell TOTAL 200-250 Ibs Tall Fescue 128 lbs. General Slope (3:1 or low) Red Top pow or Creeping Red Fescue Seasonal Nurse pope 2 lbs. 20 lbs TOTAL 150 Ibs Tall Feecolell 108 lbs. Low -Maintenance Slone Red i Grow or Creeping Red Fescue W sP 9 2 Its. (Steeper than 3:1) Seasonal Nurse p2 20 lbs. Crownvetch3 20 lbs. TOTAL 150 bs 1 - When selecting vanities of turfgraw, use the Virginia Crop Improvement Association (VCIA) recommended turfgross variety list. Quality seed will bear a (able indicating that they are approved by VCIA. A current turgfgross variety list is available at the local Count Extenstion office or through VCIA at Y 9 804-746-4884 or at se://sudan.cees.vt.edu/html/Turt/tort/Dublicatlons2.html �crop 2 - Use seasonal nurse in accordance with seeding dates as stated below: February 16th through April .................................................... Annual Rye May 9 9u 1st through August 15th............................................... Foxtail Millet August 16th through October ................................................. Annual R 9 9 ye November through February 15th .............................................Winter Rye eWP (may 3 - Substitute Sericea edeza far Crownvetch east of Formville Va. Ma throw September use hulled Sericea all other erlods use unhulled Sericea . through SBP P ) If Flat ea is used increase rate to 30 Weeping lbs./acre. acre. If D / P 9 Loveass Is usede include in an slope of low maintenance mixture cluing warmer seeding periods, Y oP 9 9 P % increase to 30 - 40 SGURCC VA DSWC SILT FENCE CUL PERT INLET clP PROTECTION 3.08 V- EMoVALL Dt5r.11ICE er B' AIIAF/lal F fipF b mww0 EMBRMfYFNr FLOW OPTIONAL STONE COHBINATION* I f.o' I f.5• I �yT• " �• ■•la�ir♦�7r VECT T57, /S /SB OR (57 CGRRSE AGGREGATE ro SS T frIME N ' iIMSESIfOE ' WHEN To IELOCRY OF Fl.OW 6 ExPEC1ED SOURCE.. ADAPTED lnvn VDOT Standard Sheets and Va. DSWC PLATE 3.08-1 TEMPORARY SEDIMENT BASIN TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES SEEDING RATE NORTHb SOI PLANT 3/1 5/1 8/15 2/15 5/1 9/1 SPECIES CHARACTERISTICS Acre 1000 ft2 to to to to to to 4/30 8/15 11/1 4/30 9/1 11/15 OATS 3 bu. (up to 100 Its., 2 lbs. X - - X - - Use spring varieties (ag. Noble). (Aws. lethal not less than 50 Ibs.) Rid 2 bu. (up to 110 Its.. 2.5 lbs. X - X X - X Use farlate tall wading% winter (Salele cerlele) rat low than 50 Ibe.) cover. tolerates cold and low moisture. GERMAN RYEGRASS 50 lbs. approx. , lbs.- x - - X - Warm-w w annual. Of" at first (Solana Rake) trust. May be added to summer micas. a ANNUAL RYEG ASS 60 Iba 11F Its. X - X X - X May be added In mixes Will Y um multFflorump� (LOT 1 mow awl of most stands WEEPING 15 lbs. 5 I£ lea - x - - X - Warn-seasan perennial. May bunch. Tolerates hot, dry slopes LOVEGRASS and acid, infertlla sells. May be (Ere owds aural.) added to mixes. KOREAN 25 IhL approx. 1 Y2 lbs. x x - X x - Warm seasonal annual legume. LESPEDEZAc Tolerates soil soils May be ulaole (LeN•dMa sW ) added to mixes a Northern Piedmont and Mountain region. See Plots 3.22-1 and 3.22-2. toSouthern Piemont and Coastal Plain. c May be used as a cover crop with spring wading. Y P P 9 9 It May be used as a cover crop with fall seeding. x May be planted between these dates. - May ruj be planted between these dates. OURCE VA DSWC SMALL EXCAVATED PIT ON UPPER SIDE OF STONE OUTLET 10'x5'x2' DEEP FLOW ARROW ELEVATION VIEW STONE OUTLET DETAIL Nrs SEDIMENT BASIN S CHEMA TI C ELE VA. TIONS DESIGN HIGH WATER L,(25-YR. STORM ELEV.) SEDIMENT CLEANOUT POINT C TO 34 STORAGE REDUCED SOURCE: VA- DSWC BARREL PLATE. 3.14-2 BASIN if DRAIN AREA WET STOR. VOL. REO D. WET STOR. VOL. ELEV. WET STOR. VOL. PROV. DRY STOR. VOL. REO'D. DRY STOR. VOL. PROV. DRY STOR. VOL. ELEV. BOTTOM ELEV. RISER CREST ELEV DEWAT DEVICE ELEV EMERG. SPILL. ELEV. 25-YR STORM ELEV. TOP DAM ELEV. RISER DIAM. DEWAT. DEVICE DIAM. FLEX. TUBING DIAM. ANTI- VORTEX DIAM. ANTI- VORTEX THICK GAUGE ANTI- VORTEX HEIGHT ANTI- VORTEX STIFFENER OUTFALL BARREL OUTFALL BARREL OUTFALL BARREL OUTFALL BARREL ANT) -SEEP COLLARS DIAM. LENGTH INV. IN INV. OU -1/4 PIPE or 1-1/4x1-1/4 xi 4 ANGLE 1 AC. YD.3 FT YD.3 YD.3 YD.3 FT. FT FT, FT FT FT I FT. IN. IN. IN. IN. GA. Wt. IN. FT FT FT SIZE 38.12 2554 430 6128 2554 7318 435.50 422 435.50 430 435.50 436.55 437.50 48 24 25 72 14 21 42 120.49 422 418 4 5.8X5.8 �IIF. \ / / QI 3 a. c N m "p LT H 0 c T c C) 'y BRIAN C, MIYCHELL I II o Lic, No, 035724 0511812022 P�FSS)ONALENO\� a pl C M al c O }_ U N ` O ~ " 3 4) r 0 t V Q 3 q v` q � o • • ti �N w 0 .a 1 S w 46 O CIL O CI � w t • M REVISIONS )ATE ITEM w` 5/18/22 PER COMMENTS go _ (n m M C 3 O F 0 �T M a 0 L a DATE r 01-20-2022 al SCALE NOT TO SCALE o PROJECT MANAGER GN BRIAN C. MITCHELL, P.E. o DESIGNED BY BCM / LEN t CHECKED BY c 0 PROJ./j' c 20140065 3 0 SHEET C-5A r Silt Trap fil Area= 1.97 acres Wet Volume Req'd 3564 cf Dry Volume Req'd 3564 cf Bottom L = 44 ft Bottom W = 22 ft Wet Depth = 3.0 ft Dry Depth = 2.0 ft Wet Volume Actual 4308 cf Dry Volume Actual 4592 cf Stone Outlet L = 12 It Side Slopes= 2 :1 Bottom Elev = 455.0 Top Width= 42.0 Top Length= 64.0 Silt Trap 2 Area= 2.49 acres Wet Volume Req'd 4504 cf Dry Volume Req'd 4504 cf Bottom L = 52 ft Bottom W = 26 ft Wet Depth = 3.0 it Dry Depth = 2.0 ft Wet Volume Actual 5676 cf Dry Volume Actual 5744 lcf Stone Outlet L = 15 Ift Side Slopes = 2 :1 Bottom Elev = 468.0 Top Width= 46.0 Top Length= 72.0 Silt Trap 3 Area= 2.38 acres Wet Volume Req'd 4305 cf Dry Volume Req'd 4305 cf Bottom L = 44 it Bottom W = 22 it Wet Depth = 3.0 it Dry Depth = 2.0 ft Wet Volume Actual 4308 cf Dry Volume Actual 4592 lcf Stone Outlet L = 15 Ift Side Slopes= 2 :1 Bottom Elev = 458.0 Top Width= 42.0 Top Length= 64.0 Silt Trap 4 Area= 2.96 acres Wet Volume Req'd 5355 cf Dry Volume Req'd 5355 cf Bottom L = 52 ft Bottom W = 26 It Wet Depth = 3.0 ft Dry Depth = 2.0 Ift Wet Volume Actual 5676 cf Dry Volume Actual 5744 cf Stone Outlet L = 18 Ift Side Slopes = 2 :1 Bottom Elev = 458.0 Top Width= 46.0 Top Length= 72.0 LE ST-1 1 %= 0, 11 1 I l j l l j j l! s-2 I�IIIIII IjII � I 111�1 � I j 1 11111, III I//Jill ilii I I I I I /itI 11 1 / I I I I I I I I I I I III, IIII hill I�IIIIII 1111111II1I \1I \I 1111 `\ \ I�iiiillliiiliiiilil\111\;\\11 \\�`\ \\ M ST-2 ;� O1 rill ll ll 'rr ii Ir�i r1 �1 •I� r•� � r � / . \ -__ ll/111111III/ lfill lfill ll l// 111I IIj1 j l l 111 Illlll/lll 111 /l 111lllllll ll I/ ll lllf l I Ijlll`\1\I(<J '\\\��--------- - ll�ulilllll�lllllllllllllllllll 11����\\� \\\�---`-------- l1 r/Illll /l/ll/11111111 /111/lll ll /l l/l II\\\ \ \ \ . , ``--------- llll/111111, I1111111111/1 I1I 111I/ -- 1111, 11111/lll /11/1/1111111111111 \ I \\\\\ \ \ \\\\`--_-_- - - - - - - 'lll/1l1/1/1111111111111111IIII I/ 111\\\` `\`, \ __________ lll/lll, 1/l l/11 /11/1ll llllllllll 1 `\ , ` ---- ////ll,l/,111/111111111111111\ 1 `�\ -- r l/l///11111111111 /1111111111 \ \ 1 - `----------- ///////,//i ll fill 111111 I II --- - --- ----- - _ '--------- --- -------- --- _ -- I _ ______-__-'i ____i - ST-3 CALE 1 / - A65----------- ----- - ---------- ST- 4 i � 0, Silt Trap 5 Area= 2.46 acres Wet Volume Req'd 4450 cf Dry Volume Req'd 4450 cf Bottom L = 46 ft Bottom W = 23 ft Wet Depth = 3.0 ft Dry Depth = 2.0 Ift Wet Volume Actual 4632 cf Dry Volume Actual 4868 lcf Stone Outlet L = 15 Ift Side Slopes= 2 :1 Bottom Elev = 499.0 Top Width= 43.0 Top Length= 66.0 Silt Trap 6 Area= 2.54 acres Wet Volume Req'd 4595 cf Dry Volume Req'd 4595 cf Bottom L = 46 It Bottom W = 23 it Wet Depth = 3.0 It Dry Depth = 2.0 ft Wet Volume Actual 4632 lcf Dry Volume Actual 4868 lcf Stone Outlet L = 16 Ift Side Slopes= 2 :1 Bottom Elev = 440.0 Top Width= 43.0 Top Length= 66.0 Silt Trap 7 Area= 2.62 acres Wet Volume Req'd 4740 cf Dry Volume Req'd 4740 cf Bottom L = 48 ft Bottom W = 24 ft Wet Depth = 3.0 ft Dry Depth = 2.0 ft Wet Volume Actual 4968 cf Dry Volume Actual 5152 cf Stone Outlet L = 16 ft Side Slopes = 2 :1 Bottom Elev = 420.0 Top Width= 1 44.0 Top Length= 1 68.0 / / / / - - - - - - - - - ' - - - -- , Sic -------- , - ---_ --- - - - - - ------- ------'-.�' , ST-5 1�- 0, ------------------ --- ,_--------- --------- 1- --- 44 ST-6 ;' 0, LE ST-7 i� 0, O O In C r n ao 0 V Z O d� U .--I W CLU �� v Z UG`' U r� Z W a41a co U W O :b ado U -1 M N N O 0) O N O 0�y ,+y a c ° \ 0 NK Q 3 c d E o+ 0 c T p o U y � BRIAN C. MIYCHELL 1 11 o Lic, No, 035724 0511812022 �FSSIONAL ENG\� a- im C N W c O L U o 3 0 N N 0 rn O ICI C (� (� O W � ° I� U �I c Irk O ` ' U CIL W ` � o w REVISIONS DATE ITEM w 05118122 PER COMMENrS ;3 rn 0 c 3 H 0 �T a 0 a DATE r 01-20-2022 SCALE c NOT TO SCALE o 0 PROJECT MANAGER BRIAN C. MITCHELL, P.E. c .N DESIGNED BY v BCM / LEN r CHECKED BY -° c 0 PROJ.# c 20140065 .3 0 SHEET # -a C - 5B O O In CQ GO O O U COD o U it •V �i U .� A U N c O � Uy O M L) O A a 0 Z rn c c W 41 c 3 H N N O N BRIAN C. MI CHELL I cc d q 0511812022 p P essIONALOGZ� a V C v •C 11 O •� � V 3 c Fyn v rr^^ v1 n� w q � o N w ti N o 0 c a IO 0 a C REVISIONS DATE r 01-z0-20zz n�u 1 " = 50' c o r PROJECT MANAGER BRIAN C. MITCHELL, P.E. T .N v DESIGNED BY BCM / LEN r CHECKED BY a c 0 PROJ.# c .3 20140065 0 SHEET # C - 6 O O In CQ GO O O U COD o U it •V �i U .� A U N c O � Uy O M L) O A a 0 Z rn c c W 41 c 3 H N N O N BRIAN C. MI CHELL I cc d q 0511812022 p P essIONALOGZ� a V C v •C 11 O •� � V 3 c Fyn v rr^^ v1 n� w q � o N w ti N o 0 c a IO 0 a C REVISIONS DATE r 01-z0-20zz n�u c AS SHOwN 0 PROJECT MANAGER BRIAN C. MITCHELL, P.E. 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MIYCHELL 1 II o Litz, No, 035724 0511812022 P �FSSIONAL ENG\� 2 N rn c 0 U C c 3 N L • O V 3 vl 0 N W C\Q 0 rn ti I� c 0 U III��O O rv� U 1- O = WCIL O C 1 0 c REVISIONS DATE ITEM w 05118122 PER COMMENTS ;; (n 3 H O �T 0 a 0 a DATE 0 of-z0_z W SCALE " c 1 = 50' o L PROJECT MANAGER BRIAN C. MITCHELL, P.E. rn .N v DESIGNED BY BCM / LEN r CHECKED BY ° C O PROJ.# c '3 z0140065 0 SHEET # C - 6B r 1 I • i I I I 1 I 1 I � I \ \J I 1 1 I 1 \\ ` \\ I � � �\ I i l I I I I %/ / / l / l l l l I l I l i i l / / / / '/ /i', / ri / / "///" � �_ � i 'i i// c __- _____-____-- __________ - _______ __-_'__� ___ � �', , / �, / / ^� � - `� \ � �� <�__-__ _-_ _ -� _� _- _- `� �� ` ♦\; \ \._ --__ _ -__ -- -_�_ __�� III I I I I I I 1 1 I 1 I 1 \ \ \ ♦ / / � / / I I / l / l / l l I I l / 1 /I I / / / // , / / l / / , ///ir'� �� ♦ \\ \ -_- ___ ___ - __ _ _ ____ _ __- _I /'/ // � ,//i j , /.� -` �.`\ '_�---_-_� =\ -`-` `` --- --- -- \ \ \ \ \ \ \_ - _ I II I I I I I I 1,I11 \ `\ ,/ I11 IIII 1, 1, I A , 1 I \ \\ I}- //' l I I I I I , 1 1 I 1 I 1 \ l I I I I I I I I I I I I I I I I I 1 I I , I I \ \ \ \ I /'' � ; / / / � , 1 , 1 I I 1 1 I I , 1 1 I I 1 1 I I 1 1 /Ill, I I ! / /, / / k1 / _ ___ --_`- -_- _- - �-1i$ _ ----_--__ __ __ ____ __ _ _ =' , `\ -- '�. ,_-__-- '�` _^__ ��,__ - _ \ \ - _ - ��� �•- / I I I I I I I 11 1 I \ \ ♦ , '- I I�l, //l/// l/IIII \ `II II1 II, ♦, ^, ,^; ; --- _ --- -__-__ ----_-__---- --_-----_-_ ------ _-__-____--____--_-_ __ - -_ -_-----_-__--- 1--__ Bill , LIN - II I / I I I 1 I / �� / , / / / /,, I// // ,, , /// , 11I 1„III ,/U 111 \\♦. ♦\� - _---__-__-------------- ---- � _- '\ - __ --__ ------------__-__ - -- - - --_ -_- _ _ - - `\\ \ \ \\>�- � - --_ - ----- --- lll- 1 \ I I / III I 1 � � (1 --- --- -- --- - - - - --_ -----^ ^- -'_ ---- --- ----- ------ - ---_---------- ----_ -- ----_ '-_ ' _'-_ -_--- - --- -- ---- \ � `�- �- �. •ram - - - 1 -rr- �h' � __ .�- -*1r 11,y _ `.ice• - / - , / I u //..i //// IIII I 1 \ J/ 1' ♦ `\` 7 i,� ''/' / /'' , \ \\ \\ \ \ �\ 1111�1�1111j IIII I I ________________ '' '_ � �� � �i /, ,. 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O C r n ao V U O i.- ' O ^I y V +� C`D 0 • r••1 0 W U W c� cal Z ^' U �i •r-1 OI I� •r••1 Z�' rn n W � .� I � W I� p O 1,.1 � �) Ol W N O11.4 po O tz H N -1 N N U O 0 � O A c a ° U O O OI N O 0 " U = N l///1'� vJ N d Q 3 C N E m pLT H 0 c T C Q � O U y � BRIAN C. MI CHELL o Lic, No, 035724 p c,0511812022 �FSSIONAL ENU\� 2 N w C N W C O U c 3 0 7 ° 3 L 1� n lTn w 0 v� q Cti ° d N0 �i -0 C a U 0 by o lye U CL w 0 O � N L N REVISIONS DATE ITEM w 05118122 PER COMMENTS o' in Ol N c 3 H 0 �T ° a 2 a DATE °' 01-20-2022 SC=50- c 1 " =o r PROJECT MANAGER BRIAN C. MITCHELL, P.E. c .N DESIGNED BY v BCM / LEN r CHECKED BY -° c 0 PROJ.# c 20140065 .3 ° SHEET # -a C-6C r STRUCTURE TABLE Structure Name STRUCTURE DETAILS STRUCTURE DESCRIPTION 1 RIM = 504.00 VDOT DI-5 2 INV OUT = 499.50 RIM = 503.80 3 2 INV IN = 495.35 VDOT DI-5 4 INV OUT = 495.25 RIM = 503.32 5 4 INV IN = 494.89 VDOT DI-3C (8ft) SB INV IN = 494.90 6 INV OUT = 494.80 5A RIM = 504.13 VDOT DI-3B (8ft) 5B INV OUT = 500.10 RIM = 503.32 7 6 INV IN = 494.39 VDOT DI-3C (8ft) 8 INV OUT = 494.30 RIM = 489.00 9 8 INV IN = 485.85 VDOT DI-5 10 INV OUT = 485.10 RIM = 490.14 11 10 INV IN = 483.67 VDOT DI-3B (6ft) 12 INV OUT = 483.57 13 RIM = 493.75 VDOT DI-3B (12ft) 14 INV OUT = 489.75 15 RIM = 493.65 VDOT DI-3B (6ft) 16 INV OUT = 489.65 RIM = 493.65 17 14 INV IN = 488.91 VDOT DI-3A 16 INV IN = 488.91 18 INV OUT = 488.81 RIM = 490.19 19 12 INV IN = 483.17 VDOT DI-3B (6ft) 18 INV IN = 483.92 20 INV OUT = 481.00 RIM = 476.40 20A 20 INV IN = 470.41 DRNG M/H 20B INV OUT = 462.58 21 RIM = 486.00 VDOT DI-5 22 INV OUT = 481.54 RIM = 483.83 23 22 INV IN = 479.84 VDOT DI-3B (8ft) 24 INV OUT = 479.74 RIM = 483.53 25 24 INV IN = 479.23 VDOT DI-3C (8ft) 26 INV OUT = 475.91 RIM = 483.55 27 26 INV IN = 475.10 VDOT DI-3C (6ft) 28 INV OUT = 475.00 RIM = 475.58 29 28 INV IN = 470.23 DRNG M/H 30 INV OUT = 463.28 RIM = 459.14 31 30 INV IN = 454.04 DRNG M/H 32 INV OUT = 452.06 RIM = 460.03 33 20B INV IN = 454.92 DRNG M/H 32 INV IN = 449.56 34 INV OUT = 445.35 35 RIM = 446.79 ENDWALL 34 INV IN = 444.00 37 RIM = 487.95 VDOT DROP INLET 3A, 3B, 3C 38 INV OUT = 483.95 RIM = 488.14 39 38 INV IN = 482.75 VDOT DI-3B (10ft) 40 INV OUT = 478.75 41 RIM = 484.89 VDOT DI-3C (6ft) 42 INV OUT = 479.19 RIM = 484.89 43 40 INV IN = 477.99 VDOT DI-3C (6ft) 42 INV IN = 477.99 44 INV OUT = 477.89 45 RIM = 483.00 VDOT DI-5 46 INV OUT = 479.50 RIM = 482.50 47 46 INV IN = 477.27 VDOT DI-5 44 INV IN = 477.27 48 INV OUT = 477.02 RIM = 485.23 49 48 INV IN = 476.40 VDOT DI-3C (6ft) 50 INV OUT = 476.30 RIM = 485.23 51 50 INV IN = 475.90 VDOT DI-3C (6ft) 52 INV OUT = 475.80 RIM = 468.49 53 52 INV IN = 461.00 DRNG M/H 54 INV OUT = 460.15 55 RIM = 461.25 ENDWALL 54 INV IN = 459.00 RIM = 447.63 59 59A INV IN = 442.36 DRNG M/H 60 INV OUT = 438.27 59B 59A RIM = 457.00 INV OUT = 451.13 VDOT DROP INLET 5 RIM = 435.23 61 60 INV IN = 431.00 DRNG M/H 62 INV OUT = 425.26 RIM = 423.58 63 62 INV IN = 419.00 DRNG M/H 64 INV OUT = 412.56 65 RIM = 413.75 ENDWALL 64 INV IN = 411.50 67 RIM = 483.59 VDOT DI-5 68 INV OUT = 480.20 RIM = 464.97 69 68 INV IN = 461.50 VDOT DI-5 70 INV OUT = 461.40 RIM = 459.00 71 70 INV IN = 455.50 VDOT DI-5 72 INV OUT = 454.75 RIM = 472.68 73 72 INV IN = 453.86 DRNG M/H 76 INV OUT = 453.76 RIM = 472.32 77 76 INV IN = 453.44 DRNG M/H 78 INV OUT = 453.34 STRUCTURE TABLE Structure Name STRUCTURE DETAILS STRUCTURE DESCRIPTION RIM = 447.77 78A 78 INV IN = 444.07 DRNG M/H 78B INV OUT = 429.95 79 RIM = 429.75 ENDWALL 78B INV IN = 426.95 81A RIM = 468.50 VDOT DI-5 81B INV OUT = 465.00 RIM = 469.26 81D INV IN = 464.80 81 81B INV IN = 464.80 VDOT DI-3C (8ft) 81F INV IN = 464.80 82 INV OUT = 464.70 81E RIM = 470.14 VDOT DI-3B (8ft) 81F INV OUT = 466.19 81C RIM = 470.77 VDOT DI-3B (10ft) 81D INV OUT = 466.77 RIM = 469.21 83 82 INV IN = 463.90 VDOT DI-3C (8ft) 84 INV OUT = 463.80 RIM = 464.20 85 84 INV IN = 460.00 DRNG M/H 86 INV OUT = 459.90 87 RIM = 461.25 ENDWALL 86 INV IN = 459.00 RIM = 441.50 89 89A INV IN = 435.10 DRNG M/H 90. INV OUT = 435.00 896 89A RIM = 457.00 INV OUT - 451.41 VDOT DROP INLET 5 RIM = 429.57 91 90. INV IN = 423.60 DRNG M/H 92 INV OUT = 417.61 93 RIM = 419.26 ENDWALL 92 INV IN = 417.01 RIM = 463.53 95 95B INV IN = 459.60 VDOT DI-3B (10ft) 96 INV OUT = 459.50 95A RIM = 469.49 VDOT DI-3B (10ft) 95B INV OUT = 465.50 RIM = 463.53 97 96 INV IN = 459.10 VDOT DI-3B (8ft) 98 INV OUT = 459.00 RIM = 458.98 99 98 INV IN = 455.00 VDOT DI-3A 100 INV OUT = 454.90 RIM = 441.96 101 100 INV IN = 435.92 DRNG M/H 102 INV OUT = 429.39 RIM = 405.29 102C 1026 INV IN = 401.00 DRNG M/H 102D INV OUT = 394.74 RIM = 425.29 102A 102 INV IN = 421.00 DRNG M/H 102E INV OUT = 410.74 103 RIM = 395.11 ENDWALL 102D INV IN = 393.15 105 RIM = 475.50 VDOT DI-5 106 INV OUT = 472.00 RIM = 475.00 107 106 INV IN = 470.05 VDOT DI-3C (6ft) 108 INV OUT = 469.95 RIM = 475.21 109 109E INV IN - 469.27 VDOT DI-38 (6ft) 108 INV IN = 469.27 110 INV OUT = 469.17 109A RIM = 477.29 VDOT DI-3B (6ft) 109E INV OUT = 473.29 RIM = 465.00 111 110 INV IN = 461.50 VDOT DI-5 112 INV OUT = 452.13 RIM = 452.25 112A 112 INV IN = 447.00 DRNG M/H 1126 INV OUT = 438.81 113 RIM = 439.96 ENDWALL 112B INV IN = 438.00 115 RIM = 473.54 VDOT DI-3B (8ft) 116 INV OUT = 469.60 RIM = 473.54 117 116 INV IN = 469.20 VDOT DI-3B (8ft) 118 INV OUT = 469.10 RIM = 471.44 119 118 INV IN = 467.64 VDOT DI-3A 120 INV OUT = 467.54 121 RIM = 470.19 VDOT DI-3B (6ft) 122 INV OUT = 466.18 RIM = 470.19 123 120 INV IN - 465.78 VDOT DI-38 (6ft) 122 INV IN = 465.78 124 INV OUT = 465.68 RIM = 468.43 125 124 INV IN = 464.43 VDOT DI-3C (6ft) 126 INV OUT = 464.33 RIM = 458.02 127 126 INV IN = 453.20 DRNG M/H 128 INV OUT = 450.10 RIM = 456.46 129 128 INV IN = 447.00 DRNG M/H 130 INV OUT = 446.90 131 RIM = 447.96 ENDWALL 130 INV IN = 446.00 133 RIM = 461.92 VDOT DI-39 (12ft) 134 INV OUT = 455.60 RIM = 461.92 135 134 INV IN = 455.20 VDOT DI-39 (8ft) 136 INV OUT = 455.10 RIM = 456.45 137 136 INV IN = 452.46 VDOT DI-3B (6ft) 138 INV OUT = 452.36 STRUCTURE TABLE Structure Name STRUCTURE DETAILS STRUCTURE DESCRIPTION 139 RIM = 453.09 VDOT DI-36 (6ft) 140 INV OUT = 449.10 RIM = 453.09 141 138 INV IN = 448.70 VDOT DI-3B (6ft) 140 INV IN = 448.70 142 INV OUT = 448.60 143 RIM = 458.00 VDOT DI-5 144 INV OUT = 454.50 RIM = 450.50 145 142 INV IN = 447.00 VDOT DI-5 144 INV IN = 447.00 146 INV OUT = 446.90 RIM = 447.86 147 146 INV IN = 443.86 VDOT DI-3C (6ft) 148 INV OUT = 443.76 RIM = 431.62 149 148 INV IN = 425.58 VDOT DI-5 150 INV OUT = 425.32 151 RIM = 427.25 ENDWALL 150 INV IN = 425.00 153 RIM = 451.51 VDOT DI-3C (6ft) 154 INV OUT = 443.81 RIM = 451.51 154 INV IN = 443.41 155 155B INV IN = 447.16 VDOT DI-3C (6ft) 155D INV IN = 443.41 156 INV OUT = 443.31 155A RIM = 451.50 VDOT DI-5 155B INV OUT = 448.00 155C RIM = 453.68 VDOT DI-3B (10ft) 155D INV OUT = 449.94 RIM = 453.00 157 156 INV IN = 442.01 VDOT DI-3A 158 INV OUT = 441.91 RIM = 440.63 159 158 INV IN = 436.34 DRNG M/H 160 INV OUT = 432.01 RIM = 426.13 161 160 INV IN = 422.13 DRNG M/H 162 INV OUT = 414.25 RIM = 405.03 163 162 INV IN = 400.00 DRNG M/H 164 INV OUT = 392.10 RIM = 388.19 165 164 INV IN = 383.90 DRNG M/H 166 INV OUT = 378.30 167 RIM = 379.95 ENDWALL 166 INV IN = 377.99 169 RIM - 506.43 ENDWALL 170 INV OUT = 503.64 171 RIM = 505.50 ENDWALL 170 INV IN = 502.71 STORM PIPE TABLE STORM PIPE FROM STIR TO STIR UPPER INV LOWER INV PIPE LENGTH SLOPE PIPE SIZE 2 1 3 499.50 495.35 110.93' 3.74% 15 IN. CL. III RCP 4 3 5 495.25 494.89 35.53' 1.00% 15 IN. CL. III RCP 5B 5A 5 500.10 494.90 84.77' 6.14% 15 IN. CL. III RCP 6 5 7 494.80 494.39 40.00' 1.00% 15 IN. CL. III RCP 8 7 9 494.30 485.85 142.50' 5.93% 15 IN. CL. III RCP 10 9 11 485.10 483.67 142.50' 1.00% 24 IN. CL. III RCP 12 11 19 483.57 483.17 40.06' 1.00% 24 IN. CL. III RCP 14 13 17 489.75 488.91 84.26' 1.00% 15 IN. CL. III RCP 16 15 17 489.65 488.91 40.00' 1.86% 15 IN. CL. III RCP 18 17 19 488.81 483.92 157.34' 3.10% 15 IN. CL. III RCP 20B 20A 33 462.58 454.92 63.80' 12.00% 24 IN. CL. III RCP 20 19 20A 481.00 470.41 132.37' 8.00% 24 IN. CL. III RCP 22 21 23 481.54 479.84 142.49' 1.19% 15 IN. CL. III RCP 24 23 25 479.74 479.23 44.99' 1.13% 15 IN. CL. III RCP 26 25 27 475.91 475.10 40.74' 2.00% 15 IN. CL. III RCP 28 27 29 475.00 470.23 119.21 4.00% 15 IN. CL. III RCP 30 29 31 463.28 454.04 76.97' 12.00% 15 IN. CL. III RCP 32 31 33 452.06 449.56 345.05' 0.72% 18 IN. CL. III RCP 34 33 35 445.35 444.00 31.50' 4.29% 24 IN. CL. III RCP 38 37. 39 483.95 482.75 40.00' 3.00% 15 IN. CL. III RCP 40 39 43 478.75 477.99 76.02' 1.00% 15 IN. CL. III RCP 42 41 43 479.19 477.99 40.00' 3.00% 15 IN. CL. III RCP 44 43 47 477.89 477.27 88.17' 0.70% 15 IN. CL. III RCP 46 45 47 479.50 477.27 116.41' 1.91% 15 IN. CL. III RCP 48 47 49 477.02 476.40 62.73' 1.00% 18 IN. CL. III RCP 50 49 51 476.30 475.90 40.00' 1.00% 18 IN. CL. III RCP 52 51 53 475.80 461.00 141.51' 10.46% 18 IN. CL. III RCP 54 53 55 460.15 459.00 28.68' 4.01% 18 IN. CL. III RCP 59A 59B 59 451.13 442.36 68.48' 12.81% 15 IN. CL. III RCP 60 59 61 438.27 431.00 60.58' 12.00% 18 IN. CL. III RCP 62 61 63 425.26 419.00 52.17' 12.00% 18 IN. CL. III RCP 64 63 65 412.56 411.50 41.52' 2.55% 18 IN. CL. III RCP 68 67 69 480.20 461.50 228.52' 8.18% 15 IN. CL. III RCP 70 69 71 461.40 455.50 124.00' 4.76% 15 IN. CL. III RCP 72 71 73 454.75 453.86 178.33' 0.50% 24 IN. CL. III RCP 76 73 77 453.76 453.44 41.37' 0.76% 24 IN. CL. III RCP 78B 78A 79 429.95 426.95 51.63' 5.81% 24 IN. CL. III RCP 78 77 78A 453.34 444.07 77.29' 12.00% 24 IN. CL. III RCP 81F 81E 81 466.19 464.80 69.01, 2.01% 15 IN. CL. III RCP 81B 81 A 81 465.00 464.80 19.90, 1.00% 15 IN. CL. III RCP 81D 81C 81 466.77 464.80 104.17' 1.89% 15 IN. CL. III RCP 82 81 83 464.70 463.90 40.13' 2.00% 15 IN. CL. III RCP 84 83 85 463.80 460.00 85.49' 4.44% 15 IN. CL. III RCP 86 85 87 459.90 459.00 89.01' 1.01% 18 IN. CL. III RCP 89A 89B 89 451.41 435.10 82.72' 19.71% 15 IN. CL. III RCP 90. 89 91 435.00 423.60 44.24' 25.76% 18 IN. CL. III RCP 92 91 93 417.61 417.01 30.68' 1.95% 18 IN. CL. III RCP 95B 95A 95 465.50 459.60 121.03' 4.87% 15 IN. CL. III RCP 96 95 97 459.50 459.10 40.00' 1.00% 15 IN. CL. III RCP 98 97 99 459.00 455.00 115.77' 3.45% 15 IN. CL. III RCP 100 99 101 454.90 435.92 167.55' 11.33% 15 IN. CL. III RCP 102D 102C 103 394.74 393.15 47.69' 3.34% 15 IN. CL. III RCP 102E 102A 102C 410.74 401.00 81.17' 12.00% 15 IN. CL. III RCP 102 101 102A 429.39 421.00 69.94' 12.00% 15 IN. CL, III RCP STORM PIPE TABLE STORM PIPE FROM STIR TO STR UPPER INV LOWER INV PIPE LENGTH SLOPE PIPE SIZE 106 105 107 472.00 470.05 90.49' 2.16% 15 IN. CL. III RCP 108 107 109 469.95 469.27 67.80' 1.00% 15 IN. CL. III RCP 109B 109A 109 473.29 469.27 98.75' 4.07% 15 IN. CL. III RCP 110 109 111 469.17 461.50 101.07' 7.59% 15 IN. CL. III RCP 112B 112A 113 438.81 438.00 33.35' 2.43% 15 IN. CL. III RCP 112 111 112A 452.13 447.00 42.79' 12.00% 15 IN. CL. III RCP 116 115 117 469.60 469.20 40.00' 1.00% 15 IN. CL. III RCP 118 117 119 469.10 467.64 58.96' 2.48% 15 IN. CL. III RCP 120 119 123 467.54 465.78 105.26' 1.67% 15 IN. CL. III RCP 122 121 123 466.18 465.78 40.02' 1.00% 15 IN. CL. III RCP 124 123 125 465.68 464.43 109.87' 1.14% 15 IN. CL. III RCP 126 125 127 464.33 453.20 157.75' 7.06% 15 IN. CL. III RCP 128 127 129 450.10 447.00 259.96' 1.19% 15 IN. CL. III RCP 130 129 131 446.90 446.00 26.11' 3.45% 15 IN. CL. III RCP 134 133 135 455.60 455.20 40.00' 1.00% 15 IN. CL. III RCP 136 135 137 455.10 452.46 50.78' 5.20% 15 IN. CL. III RCP 138 137 141 452.36 448.70 67.24' 5.44% 15 IN. CL. III RCP 140 139 141 449.10 448.70 40.00' 1.00% 15 IN. CL. III RCP 142 141 145 448.60 447.00 51.17' 3.13% 15 IN. CL. III RCP 144 143 145 454.50 447.00 129,30' 5.80% 15 IN. CL. III RCP 146 145 147 446.90 443.86 85.84' 3.54% 15 IN. CL. III RCP 148 147 149 443.76 425.58 224.31' 8.11% 15 IN. CL. III RCP 150 149 151 425.32 425.00 23.21' 1.40% 18 IN. CL. III RCP 154 153 155 443.81 443.41 40.00' 1.00% 15 IN. CL. III RCP 155D 155C 155 449.94 443.41 122.60' 5.32% 15 IN. CL. III RCP 155E 155A 155 448.00 447.16 16.76' 5.00% 15 IN. CL. III RCP 156 155 157 443.31 442.01 130.05' 1.00% 15 IN. CL. III RCP 158 157 159 441.91 436.34 163.96' 3.40% 15 IN. CL. III RCP 160 159 161 432.01 422.13 82.35' 12.00% 15 IN. CL. III RCP 162 161 163 414.25 400.00 118.72' 12.00% 15 IN. CL. III RCP 164 163 165 392.10 383.90 68.35' 12.00% 15 IN. CL. III RCP 166 165 167 378.30 377.99 30.59' 1.01% 15 IN. CL. III RCP 170 169 171 503.64 502.71 28.00' 3.31% 24 IN. CL. III RCP VJZ �W C:W Z �W OW O lC) O d0' O�^%) U rl OHO co �r 0 U O .,. ad �rrco N ado a. (D g O L) O 4 a O ZD U) Q BRIAN C, MIYCHELI Lic, No, 035724 A' 0511812022 ,� Q4 Q) ti q REVISIONS DATE 01-20-2022 SCALE 1 " = 50, PROJECT MANAGER BRIAN C. MITCHELL, P.E. DESIGNED BY BCM / LEN CHECKED BY PROJ. j 20140065 SHEET # C-6D LIIIMNONEI� - IN 57-1 gg 1 APO I i isw -WLNWAFO I WMI IRAN .ao euyxA_ _Sal M MR Kim If ilk ��j►"�'� �� _ G�' ��;' _ ��� �������� ���i�i1,���L��lf��� � .,����/��`-��;'�,a:.~'�..�` ".,9'6 Wit,; x �y a .� .� J . - �� q+.'+"•:��� `\r' \\ r • �1 i--- � III i MEMBER I 1 / I I 1 I� / / V 4�Mi'.%\ Q k. it 10 kvl w I DA 41 BUFFER M ` - - ' I I 3J-J-1J-J-1-L , \\ 53 \ 1 RRER.£0 FOR NNRE I + 5 OE9 oEM1 ucox / • unNoxo er OIHEMMIF CWNiY � \ � / / / � I I 3 I 00 ! I , I ,I I --- I l so I . I 48 I ■ a ' ------ i I , I \ \ 47 smr sa I I 1 45 I \ \\ 45 / y rR ___ I / / 34 41 d \ I I II I 1 t�I-11�./ 4 DA n� a✓ .ay .1 f DA EX785 �'-/-- - / � 1 - X--------- - so l DA EX187 S /-------- __ DA EXl % .' : ' ------ - DA EX189 no DA 107 j -- I 0 I ss s 571511 :, -- STRUCTURE IDA RUNOFF ACRES "C" 1 0.73 0.35 3 0.25 0.66 SA 0.62 0.59 5 0.58 1 0.57 7 0.33 1 0.68 9 1.14 0.46 11 0.45 0.58 13 1.18 0.55 15 0.27 0.72 17 0.01 0.90 19 0.13 0.67 20A 0.00 0.00 21 0.87 0.47 23 0.82 0.59 25 0.54 0.66 27 0.41 0.71 29 0.00 0.00 31 0.00 0.00 33 0.00 0.00 37 0.75 0.62 39 0.47 0.58 41 0.09 0.77 43 0.33 0.57 45 0.48 0.58 47 0.27 0.52 49 0.32 0.69 51 0.16 0.75 53 0.00 0.00 59 61 63 67 0.72 0.48 69 1.81 0.42 71 1.51 0.41 73 0.00 0.00 77 0.00 0.00 78A 0.00 0.00 81A 0.33 0.52 81C 1.08 0.53 81E 0.56 0.53 81 0.63 0.51 83 0.55 0.66 85 0.13 0.58 89 91 95A 95 0.39 0.57 0.64 0.62 97 0.18 0.73 99 0.32 0.75 101 0.00 0.00 102A 0.00 0.00 102C 0.00 0.00 105 0.50 0.52 107 0.38 0.58 109A 0.26 0.53 109 0.13 0.76 111 0.17 0.51 112A 0.00 0.00 115 0.14 0.77 117 0.32 0.77 119 0.11 0.74 121 0.12 0.80 123 0.26 0.51 125 0.54 0.59 127 0.00 1 0.00 129 0.00 0.00 133 0.40 0.65 135 0.21 0.76 137 0.05 0.78 139 0.05 0.78 141 0.11 0.68 143 0.47 0.45 145 0.31 1 0.53 147 0.45 0.39 149 0.47 0.45 153 0.33 0.77 155C 0.42 0.70 155A 0.16 0.64 155 0.34 0.74 157 0.03 0.90 159 0.00 1 0.00 161 0.00 0.00 163 0.00 0.00 165 0.00 0.00 C m�P 8� 8 GRAPHIC SCALE B100 0 50 100 zoo 8 C° 8yl 6 6 1 9( IN FEET ) 1 inch = 100 ft. 0 C O Ilt U _ rl •d' �W Z U r_� Z o 4.) W Ul co 6.2 I U co11� W d O OAP (n W N O) 1. ,.y M ado � 3 -1 N N O U O N L) O Fti a c ° \ 0 4 Q •3 c >_ ° T U y BRIAN C. MIYCHELL 1 II o Lic, No, 035724 0511812022 P �FSSIONAL ENG\� 2 ia- c N W c 0 U c 3 d L O r� v 3 C T 0 O `I I� O 0 0_ c ^�I ° I� � o = W CL O � 0 c 0 0 REVISIONS DATE ITEM w 05118122 PER COMMENTS ;; in rn 0 c 3 0 0 �T 0 0 0 a DATE 01-20-2022 SCALE 1"=100' r PROJECT MANAGER BRIAN C. MITCHELL, P.E. rn .N v DESIGNED BY BCM / LEN r CHECKED BY -° c 0 PROJ.# c 20140065 3 0 SHEET # C - 7 r IN \� - \l / I ` III ' I 1 ♦ TTT I NN \--------------- / NN ----------- -- ------ ------ N,- L " \ It --- / IN\\ \\ \I\ \ / - - - - N. 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N. 1216cols my LLC Preparedbeil Inc. F t'L1&'[018 PnpereO by HP Inc. ;i 121imis Pnphol b]XP Inc. Riecl IWIG1018 -IC Prepared W HP Inc. Prue] 12116✓[O18 9eausa&Yuhw LLL Papered by HP Inc. N. 1211&-[018 umv LLC Prepared by HP Inc. hMW 12116R018 ummlrt Prepared WXP Inc. Flime]tYt6rzOte 201e XAM' 9eMseeakfi LLL Pool, 60 Summary for Subcatchmant Frei: Fill AM Summary for Subcmchmant Pre1: Pradev AP1 Summary for Subcatchmznt Fret: Prellear AP1 Summary for Subeatchmant Ill Pmbev APB Summary for Sube.Whment Pre3: Prailw APB Summary for Subcalchment Pre9: Pradear AP3 Summary for Subcmchment PM: laradvar AP4 Summary for Subcatchment PM: Pre4ev AP4 Summary for aub0ekbment Pre: Pbuderar AP4 Xemrc = 5A2 da• 12.41 hn. VOlurtn= O'Na t Call 0" RUM - 22WceQ 12.WM. Vol- zan" Cape. i.M' Xemrc = 7ONc%@ 12.VW, VOIure= 1T5a.. Deal 3." 111 - 12,67W• 12.11 are. Vol- tl]6a Coal O 1' RUM - U.rl da® 12.09 M. Volume- 3.158a[ Chal 1.W Rued - 12C20 de• 12.09M. Vc.- 8Aaa1. 0yN-a.N. III InVal l=hns, Vol- o,mai,, Clean. O ' Fal - zzill 12.18W. VOlwre- zool dan. IM. RUM MA1 da• 12 SW. VCMe- a:aO at Deal 3" Fence4 SCS TRgl hall UX=BCS, WepT elaM. hwal n=5ANI M6C III IIW003 1R2) rea .WilwealebCN. Tim Nan= 5DNI20In,.00 , 6C0.06 he Mtry RUSp MM-yA, ITIM m,UH"'IlbCN, 1. Saw-540.120Ae ans. ON he RUMgSCSTWZ11mNW. UHBCS, WelahkbCN, Fee,Nlen= 640.12100 Iae.6F-OAS M1e HUMg8C9TFdlllNiW. UXSCB, WeIpNN{X, TmeNn= S5AO1I200M,YCM 006by8 RUMpT 29 nuNW.WilwheghbFCN, Tm Sys-640-120A0 M.6C NO are anghlal To, Alen=5ANI Mhn%6C06 0.M eM uby SCm�M mNW S. UHl WeTwo, 5ANI0In, M .00 , 0.06 Runce "CIA Tg29Call Uhl WephkbCN. Tm N Ian= 5ONIMM. .00 dtoWIG any Type II Mb]-YW R9a141yoW Type 11 We 10.YW l-6 pee .46' Ty, II Mh 1C4Ypr FleabaneN l.9Y -W Type II 262Ypr ftniall3 M Type II 210.YW Fal�Wl MY Type II 244r IOWAW ealMBll•8.9Y Type II]0.h 2-Yeer FAh*yo ON Tyro II 2&hr 10.Yev nWl FalW Tyr9 II264v 166YW In nian-8 an Area ball W Cuaalwl AW rat dl ew4o8n AW (at dl enmalpn N® lea eN Ueevialwl AW fcl eN owsaum N®(at W Deeviarpn N® bleb eN Umvielvl AM bleb eN Umvielvl AW (c1 W Deaaalo 138W SGOM HSGe 15atl1 SS Wn7Y, C¢L, H3Ga 15Aa1 S WOMS, GOM, HSGe 91T0 3 Woo]S, GOM, HSGe B.1'N SS Wcoba, GOM, HSGB B.1T1 S Wco]S, GOM, HSGe aiW 55 Woo]a, Goo]HSGa aiW 66 Woo]a, GOM, HSGe &1N S Woo]a GOM, HSGe em AlFAw"1 reaalanehenoe G. HBGB l In PaeluNaeaWlk/uwa GocO H96B 8$'0! 61 Plohn1creaslantllrenoa, Goc0. H96 B 1: ON 61 Pealareloreaslantllrence. GOM. H96B &OW fill FsalurNoreaalanelrenne, GooS, HSGB t&Oro all PMa,eloreaslanelrenw. GOc0. H96 B Oex 81 Plelecc.aalaMlra,wa Coca, H.W.iB sex et Peelarelonewanelre .nee .1 Y63B AM fill Pays loreaalantllrenoe Co 11530 25.120 3] wal Average 23.ta1 T WeSjlbl Avsa9s MIN T W.whlee Avrn9e 25.1]0 5B Wega@e Average ]d.110 3B WeghWO Average 2d.1T1 m WegMee Avenge 1fi.830 59 WegMeE Average 16.820 59 Wega@E Avenge 16AA Y Weg11@E Average 25.tID I.C. Pervlwe Pree 25.120 iCU.W%Porvlwe Mae 2.1.191 1W.00%Perviwa Pree 2a.1 ]0 1W.OB%Perviwa Prea 2.1.1'N 1W OB%PeMoua Aree 2-im IlFerviwa Pre. 1fi.820 Icl Ferveua Pm ifi.820 1.no%Feb.-Pre. 18%ID 1WAB%Ferveua Pree TOLemlh Slop VNMIy Ca= baw"C n Imim hell lwnl Iwac1 Icls1 Tc LBIgM $bp VNWIy Ca= Feetliplitn Imim bell lwnl Iwac1 Ich1 I. Ta IY,M A., Velm, Ceretlly CN°iplitn Been 1Nat A,= lclsl Ta I➢yN Slop Velocity Ceredty GMlplbn (min) Can, Iwn1 Iwax1 W.) Ta IYIgN Sbp VMocily CepetA, ..l (min) hell lwnl M/ac1 lvlsl Ta IYIgth A., vanciey Cereply Casaiplion rmm Been Na wax ch1 Tc LeyM aloe Velocity Cloacae Deal Imim ll.ell INA1 Iwax1 Icls1 Ta LBIgIM1 In, Velocity C.No, bucnpan rmim hell 1Nnt Iwax1 met Ta label Slop Velocity Ceredly G08cbptitn rmlm M1ee IPoT1 Ilyaxl 1.h1 BB.T T]- OOT50 0.17 SheNFlow,ShrNaW 28.7 hap Omh. 0.17 Shah Flow. Shadow ffi] M 00]5B 0.17 Shah Flow, SheeHlow ICA M] ell BA6 Sheet Fbw.SM1Mllbw ICA M] ea10 BAfi ShM Flow, Whown a ICA 3W Ot20B BA6 SM1M Flow, SM1eeMlow 1].0 9W 0.1WS 0.28 SheN Fbw,SM1Mlbn 1]A 9W B.tCUB 0.28 SheN Fbw. SM1aellbw 1]A Ml 0.1WB 0.2B $heN Flow SM1eeHbw Moon. Ll9ht umwbuN a"OAro ache 3 w WOWa: LI9M uneerWch n=0e02 Pb 3ffi WOWa'. LlBht underanch n=04W F2=38Y Greaa: Sban mO.l. !Oya 2 Gleaa:amn n=01M P2--3.B7 Grass Shon n=01N P2-112" Gress: Dean MONO Pine SS2' Graaa: Nwe n=0 NO P2=382' G.O.: D.- `0NO P2-3S2" 20 1W 0.0140 083 Bmllowcon-mom Flw,Blwlbw CarwnYYtl FIW 2.0 1W 0.0140 0.03 Shallow Corwnnown Flow, Shallow CosbW Few 2A IN 0.0N0 0.83 Shallow ConmmraNe Flow, Shallow Cocenal Flow 0] 1N Ol 2.W BM1albw CoaeMetN Flw,BMIbw CwwaMrWtl 0A IN 0.2� 2.60 8lnllow ConwmraMC Fba. Bhallor CwWMetetl 0] 1W O.2E4g 2.60 8hanow conrenvaree Flow, snalm 1-camntea 1A 1N 0.1200 1.73 BM1albw CorborrhWtlFlW,81Wbw CwwaMYCFl°ir 1A 1W MAN 1.]3 Shallow ConwnYabE Flow, Shallow Coaenread Flow 14 1W 0.1M3 1.73 Shallow C'Nemnbo Flow, Shallow Cocenlrabe Flow S.GneaPUOn Kr -TO (p Sled Gnee Paalura xr-70fps 3. Graaa Fallen Kw 10 qe Weodlane Kv-6.0" Woodland K-50fpa WOWlana rcv=5otps Wootllene Kv-6.0" Waotllene Kv50N. Woodland Kv=50ke 43 1,183 GAIN 4.5a AN Channel Flow, Charnel Flaw, a3 1,183 ... 4.5a AM Chanel Five, Channel Flow 4S 1". 0.. 4.5a 9.N Channel Flow, Channel Flow 3B 1'. ... on 15A2 Channel Flow, Chanel Move3A 1,= GAIN SB3 15A2 Channel Flow, Chanel Flo 3B 1,= GOON AB3 15A2 Channel Flow, Channel Flow A6 11'.O.e. aB] 4.]I Chanel Flow, Cha lFlow A6 1,0a1 O.e. aB] 4.7) Channel Fly , Choi Flow A6 11'.O.e. 3.N A1r Chanel Flow, Channel Flow I1 Acen; . Form: aOa2 m=a r' n-0 NO Fel uAble botamb. sun was Area=1A. Pori 4s -042 no... Fern. w-bbl n Io a wan aa.-111F Fee- n-0M0 Fwnh. Stile bolt-. been Pees Aree=26s Pohm=ar r0AW n-0NO FaMabble bodare. club selas Pree=z.651 Penal rO.A' n-I No On hall. boaen cawy Ane=161F Orr 039 n=ONO E Aree=l a. asm:&A r0" no Feed. uAM1l. boon-, dearb v Aree=129 Pon- 6.1 r=D] n=0 NO Feedall botlo-lean lea Ana=12.Penm 6.1 r 020 n=... Feed, wobble bolt - clean sees U.9 I'M Tclol me I'M TCW a1A I= Too, I" yTA Twel I" I'M Tcd I" I'M ToW gas im Tolo1 22s imi Too, gas InAl TOW Subcatchmenl ll PrMeV AN SubCatchmenl Peel: PROav AN SUbcatcM1mem Prei: Inned APt Subcafchmenl Pre3: Pretlev All SubCakhmenl Pre3: PROev AP3 BWeaclineal Pre3: Pretlev All BWeakiament Ill Pr•Oee AM SubCetehmenl Pre: PrM•V AP4 SubCetchmenl ll PrWw AM wl..a.aa le...rb .1. new y+...n road IN.e.rb "wenwa Ih....a i � zz.e0 V V V V V 4 V+ V V V+'r- _.. ® ' a.,.., Tawnra ', � ', 123]Cle •_•_ t--r--r--r--r-'r--r r r + r fi r-; - N.n '! t23.M Cay . ;-» ..-» » ; -. » » � . » » » » ... . 56]ch : 22 is " h hook- h h + h h h e r hook. Eau ++. _a._._ Type 1124+ir- b b b b b b YP 2-Near Rainfall=3.62" cb --------------------------------- ' - V.-V._4-.V_.V..S.-V.i..V-, r -.-.. Type II 2I-hr. w ' -•-•--•--•--•--•--•--•--.-. . YP n ' - - - 10-Year Rainfall=5.46' ...--.-.._. r =-V._4... -1 Type II24-hr b b b b YP ' Y--' -: --:--- 100-Year Rainfall=8.95" --r--r-+-. . h V I . r ._'', Type II 24-hr � . [ . _ YP „'--` - ]Year Rainfall=3.62" clo 4 k k F t . h h+ h ` :-- , -_ y_ •--•--•--•--•--•--•.-•--•--'. •.- T e 1124-hF - -r_ 1--V--V--V--V--V--V V -V--, -,-_•. YP a: -Y--MO•Near Rainfall=5.46^ 1 ._ r i�,. T e 1121-hr '� _ _ _ _- YP 100-Year Rainfall=8.96's-' j j 7ylp• ' 11�-Ijr _ _ __ `' ` »µ »' -` y k-beerIllsRlfell=3 cls _-: P- T e 1124-hr- 18-Year Rainfa11=5.46" cls �I a II 24-hr ' V--F--F-l--V--1 ` y 70b-Year Rainfall=8.95" --.--.-»-»--.-+-»-»-�--'- Runoff Area=25.120 ac '- +-.-.-:-.-:-:-.-+-:-:-Runoff Area=25.120 ec b b b b b , b Runoff Area=25.120 ac Runoff Area=25.1 ]0 ac Runoff Area=25.170a Q I Runoff Area=25.1T0 ac ''. _ _ ___ _ _ Runoff ArealRunoff » • »J » w 9k Area=16.620 ac ---------- Runoff Area=16.820ac RunoffR Volume 0.966 of ', Runoff Volume 2.843 of _ _ __ __ _ __ __ __ _ _ __--- noff Volume-T.T35 of ', V V V V V V V V V - _ __ __ _ __ __ __ _ _ _ ---Runoff Volume-1.136 of ', 4 V- V- V 4 4 V V + V noff Volume=3.153 ' - ' -' -'-= r- � R noff Volume=8.263 of '. { 3 * t * u I I '� Runoff Volume=0] # Runoff Volume=2.005 of ff Volume=5.350 of RunRunoff _ ._..� _ _� _�_�_�_a_,_.. noff De th=O.46" 1 . . . i h -+. . . . . u p : - -• • • • • • • • - • •-- Runoff De th=1. [ _, 38 p - Runoff De h= ] ' [ t 3 0 p 5 e _ .. Runoff De th-0.54 P V V V V V V V V V V h _ .. _ _ _ - _ _ _ 8u Runoff De th-1. 1 50 P _ .._:., ..-. ,.-,_. _ .. . R noff De th- . 4 1 u 39 P £ =02 ��� ___.. Runoff De th-O.SA._ - '-t-i P - 9 -_ Runoff De th=1.4 " 5,s --.-. .-�. 3 P _ -. h + 1 n ff De u o p b b , b , b b _ � '�, Flow Len th-1 583 9 .- h_t__t__t__t__r__t__t_-t__t_,. _ . .--.--L_[_[_._._L2_-._-.- Flow Len th-1 58T 9 h h__ __h__h__h h __h__h_.... _ � ', r b b r fi Flow Len th-1 583 9 3 - _•__•__ __•__•__•__._. _»_.. _ � r b b r Flow Len th-1 ]50 9 . - -h- F h -F- V__V_•_ _ , --.__.-_t_t_L_._..--t._.__.__... Flow Len th-1 9 . . .........:.:..--.._.._:--:-_' _� - - , '' . . . . . . . t -Flow Len th-1 ]50 9 a e b , h t Flow Len th=1 48'I' 9 _ 9 , - _h-r h h h_t_}_.h. F h--r - _ ______________ _ __ 9 - Flow Len th=1 461' . . hml,4 1' p - --+--r--4-l--r--V--r-.Flow Len th=1 461' 9 tr, - _ i_.1 L___ -_ ._-..» __ - F4V44F44 F4 - __ - - - - _ _ - ', - ---F-1--Fh 4l4VII=1:1 h-F hot-l-L - r-.-++ _ - Tc 34.9 ham ' ""T"``- _ _ h h h h h h h h + h h Tc 34.9 hall h h Y h h h 1 t . h h h -i To-04.9 min s Tc-15.3 min 4 V 4-V 4 4 V 4 4 .-. - - -Tc 15,3 fa1P. - , MIR L [ [ [ :: -'- Tc-15.3 min -t+ .++ h 1-+-'r h +++ i +-i- . Tc-22.5 fn112- Tc-22.5 min a V F V V V V 4 ' _ _ Tc-22.5 min ' . t CN=5I ' -_ 4 V 4 V 4 4 ! 4 h 4 4 CN=57- . � . -. CNi=57 a ONa �NId6 � CN=59 i '� CNiSb ; • • • • • • -i CN=58 CN=58 -'new ... .1 __ _.-1_ - -V_1 F ! F F 1 F F F'+ 1'+ F F+ 1+ F++ 4--F-+-+ V h++-+-+-++li ++-N--- �'.,.h-- - _ _ _ 0 rn C r n co 0 V � d� U z LL U '-) o P W ��o v �W Z U \rJ � I� •--1 e c o � Z �'�wrn W .� I Is O U �� W o raw 0 a roll ° L cd .b ^ r pe, o cd � Pat N 0 U o N Fly c Pal ° U O O Ot 01 O 0 " U N 111ll /////1111'l 11 N Y Q E la pLT H 0 c >1 C p � O U y � BRIAN C. MI CHELL o Litz, No, 035724 0511812022 P �FSSIONAL ENG\� 2 N H-r C N rn C O I� U '�f C ~ q o q^� C C9 � 3 �1 N T � a 0 E� I �� G r 0.1 0 o a O �lealeal U �w wz� � O 0 tz REVISIONS CDATE ITEM w 05118122 PER COMMENTS ; in N C 3 O H 0 ° �T Q) d O L a DATE r 01-20-2022 OB SCALE C „ a ; 1 150 O PROJECT MANAGER `� c BRIAN C. MITCHELL, P.E. rn .N 0 DESIGNED BY v BSI / LEN u CHECKED BY v C 0 PROJ.# c 20140065 3 0 1_ SHEET # C - 8 r O O In C ,11 a0 U U UCOD o 0 N� W �W �� v Z 4-) W U .� W O��r �b-1a ado 3 -1 N N O O N L) O 0�y a° 0 4 �1I&- Q 3 C N E N 01 K��7 T H?OA c T c Q O U y � BRIAN C. MIYCHELL 1 11 o Lic, No, 035724 0 d 0511812022 �FSSIONAL ENG\� 2 N w C N W c O U O d q3 N N0 w O o w I o �N0 O 6-- w c (� (� O W � U 0 CL 0 REVISIONS m DATE ITEM w 05118122 PER COMMENTS ;; in 3 0 w 0 �T N d O a DATE r or-zo-zozz SCALE o r PROJECT MANAGER BRIAN C. MITCHELL, P.E. cc .N DESIGNED BY v BCM / LEN r CHECKED BY a 0 PROJ.# c 20140065 .3 0 SHEET # C - 9 2 1 2 NP E .1 T e//24-hr 2-Year Rainfall=3.62" 0 50 90 3 CT yp 2015029 NP E .1 T e//24-hr 2-Year Rainfall=3.62" 0 3 CT yp 201502 NP E T.1 Type 2-Year Rainla11=3.62" 80 -8 C yp 2 1 2 NP E T.1 Type H24-hr 2-Year Rainfall=3.62" 0 50 90 -S C Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed IV16/2018 Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 HYdroCAD010.00-13 a/n 06356 02014 HYdroCAD SoftwareSolutions LLC Pace 20 HydroCAD®10.00-13 s/n 06356 ® 2014 HydroCAD Software Solutions LLC Pace 23 HydroCAD010.01D-13 VII 06356 02014 HYdroCAD SoftwareSolutions LLC Pace 26 HydroCAD010.01D-13 wn 08356 02014 HYdroCAD Software Solutions LLC Pace 29 WMBMPI (RETENTION BASIN II) Pond BMP 1:rSydregreph, Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Width (feet) 5.00 18.50 S Pond BMP 4. WMIBMP4 (BIO RETENTION FILTER) HydrearePh n = _ _ f err= m2=Orfce 2YR Con trolls t M (Orlflt»ConWIs 10.37)ofs @r743 fps) Hydrograph 24.49 ------I--,-; _ I r_1__n--;- cfs I. a I I , , , , , , 3.30 cfs I I I ' ' ' I O 2.07 cfis �81 _J__J__J__L__L__L__L_J__J__J__J__J__L__ L__L_J__J__J__J ' ' ,2 ' �Inpp W�ALf,,,,,=2r�kCC4Ce0_e lta Y_� - - - - - - - - 'l f1'9,1�-0'_�ly- # ,.s11��i70, 3 Orifice - 10YR Controllin S re Odfi cfs 2. 2 rota ce nros 9 t t ( Cot 1 57 @ 5 fps) ;l-' 1; r.__ ,__.__l_rY_ _F_Y _ ---- __ __ __ __ __ __ __ - -- ,aRar47 , v T■t -Rise ( ntrols000 ) r Ca cfs I'S„baliarp'aI ,50,: 'r r _ _ ____ __ __ __ __ __ __ ____ _ __{ip)al(_�-- -r Re '1.. 1 �rR i Pe k.E.e'-�38. 7 � irl �I I I I I I I I I I ! I I ,__r__r__r __r__r__r__r_n__T _ _ , , , , , Max=(C cfs 5.00 hrs HW=434.00' Free Discha e rY ( 9 ) econtla Oncy �' I I &COi�6F �53 4�i , : : : : : .CJi�3,r2N a Cf S= Emergency Spillway (Controls 0.00 cfs) Sp .StOt`aa ,8. (.. - - - - - - - - - - - - - - -- - -- -- r . . _, , • , I I I,:,, I I I _ _,__.__y__:__: __: _____ ____ __ __ __ __ __ __ __ _ __ __ __ , , - ___ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ ,IIII Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) $ - 1 1 1 1 1 1 1 1 1,,, „ __r__,__�__�__,__T__r__r__r__,__�__T__T__T__T__r__r__r_�__�__,__ --r-, $ 1.80 cfs I I I I:: ._ , I I I I I I , , , , , , , , , , o , , , , , , , , I I I I I I I I I I I , __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ _ 1 , I I I I I I I , I I I I 1 , , , , I I I I J J J I I I I I I I I 1 , I I I I I I I I I I I H dro r h Y 9 aP - ; 1 • , _J _1 _L _L _L _. . _J _J _I _1 _I _I _L _J _J L I a � ,,, L L, � a. 4, L L L � � L - - I , , , , I__ i__'__ 1j ( I I I I I , I I , I , 1 1 1 1 1 1 1 1 1, 1 1 1 1 __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ _ __ __ i ' ' 1 1 I _ __ __ _ _ _ _ __ _ __ __ _ _ _ _ __ ■I,Mvx - S9.Oa cfs -- ' ' ' -- auea _L_J _1 _L_J _L _L_J _L_ F ■ u , 0.7fi cfs ' ' , -, , , T T r r + , , , , , T r + -I -I , „ l, l l l,,,, l l , I I , , I , t I ■ am,a.y ,__ J__1__1__1__1 __1 __ _J _J__ ,__,__1__,__, __ „ 1 1 1 ,, r r r r r ,,, T r r__r__r_.__..__.__ 1 1 1 1 I I I I I I I I I _ __ _ __ __ _ __ __ _ __ ____ __ __ _ _ _ elayy p9 Cr�a� i� �t�. e 4.02 Cfs ' ' ' R F Yrv,4jeY(.•a I I d , '_ J r r r , r I , _ __ _ __ __ _ __ __ _ __ __ _ __ _ __ _5e@i7air_Q11_t_ a� ; ' ; ' - 1--`-'--'--`-'--`--`-'--�--`-i- % - *-- -;--,- -1-----;--j--;_1__I- 2 0 0 -----;--r--;- , , I I I I, I 1-j--I-- ' O 5 10 15 20 25 30 35 00 45 50 55 60 65 70 75 90 95 90 95 100 105 110 115 120 rme hems 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time hu"re - i--i-i--,--i -i--L -- -i--i --i -i--i--i--i--i _1__ --L-i--L-- - S 10 15 20 25 30 35 40 45 50 55 60 85 70 75 60 05 W 95 100 105 110 115 120 rme M1oun 1 ( 1 _ __ _ __ _ _ __ _ _ __ _ _ _ __ _ _ __ _ _ __ __ $ i i i i i i i i i i-: i i i i i i i i i i I 1 ::, :..r41,- Pond BMP 1: SWM/BMP: (RETENTION BASIN II) Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) E 30 ? r 1 i r 1 r r 1 r r 1 r 1 i r 1 i r 1 r �" - a_________ _____:_ ;-,-_:_ :-._ .-�-_"_ .-,_-�_ ._�-_�__ Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) ,;', Stage -Discharge StageDischarge - 11.96 GIs - _ - - -t Stage -Di arge 450 ' _--1---.. I------f -----1-----T,-- I■ P o P9ma a __L_J__a_;_J__L__L_a__L__L_a__L_J__a__L_J__1__L_J__,__ ' (: I I I I: , 4444).344S�K0 D Pnma,r 449 1 J 1 440 447 1 y _. _♦ _a _: _. _a _a 1 1 , 1 1 1 1 1 1 ' , 0.00 cfs 4a6 ___ 1____ I_____ , ____ I____ 1____ 1_____ 1 ____ 1____ 1______1 ___ ' ' I 1 1 1 1 ; TS BO % W 85 1W ire lfa 1161m 5 10 15 20 % % % 40 a nm4 __ _ 1_____ , ____ 1____ 1____ 1_____ 1 ____ 1____ 1_____ ___ _' _r _r _T _-_r _r _I _r mWrsm 445 , 1 1 1 502 ____ ____ __ _ ___ ___ ____ ____ ____ ____ ____ ____ ____ __ - °04 - _ _1 ==_I =_ _I = _L = _1 ==_J =_ _L = _1 = _J =_ _L 1 1 , 1 1 1 1 1 , _ - 0 4a3 __L__ _J__ __L__ __L__ __L__ _J__ __L__ __,__ __J__ __L___ ' ' ' ' ' ' ' i i i 1 1 , 1 1 1 1 `o 1 - a__♦__________________♦_____,_____.______._____♦_____,______.___ _ 442 _ _ w 44, --- WBIr/IXlfic. ---,- , --T-----------r-----r-----7-----n------r-----T-----I---------- ,m I ' , --- --- -- 1 ____ ____ ___ ____ ____ ____ ____ ____ ____ ____ __ 440 1 1 , I I I I 1 1 1 ___,_____J______L_____ L_____ L_____J______L_____,_____J______L___ 436 439 430 w ----a-----�------�-----a-----a-----�------L-----a-----a------L- ____._____,______r________________-______I_____._____,______I___ 436 o ,0 2D % 4 50 4 m 60 90 1% o to w a0 4 he 60 m a0 90 0 5 10 15 2D 25 30 % 4 15 50 % le ■ Dismarae (oft) Discharge (cfe) Deitute" loss 20150290_NP-SECT.: Type 1124-hr 10-Year Rainfall=5.46" 20150290_NP-SECT.: Type 1124-hr 10-Year Rainfall=5.46" 20150290_NP-SECT.: Type 1124-hr 10-Year Rainfall=5.46" 20150290_NP-SECT.: Type ll24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 HydroCAD010.00-13 a/n 06356 02014 HydroCAD SoftwareSolutions LLC Pace 53 HydroCAD@ 10.00-13 s/n 06356 02014 HydroCAD Software Solutions LLC Pace 56 HYdei 10.00-13 s/n 06356 02014 HydroCAD Software Solutions LLC Paae 59 HWroCADO 10.00-13 s/n 06356 02014 HydroCAD Software Solutions LLC Peas 62 Pond BMP 1: SWMBMP7 (RETENTION BASIN II) Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) width (feet) 5.00 18.50 Pond BMP 4: SWMBMP4 (BIO-RETENTION FILTER) reereP roerep rime OutFlow Max 4 sse cfs 12.64 h-438.20 ischa e = re HW- ' (FreeD rg =Barrel) (Cu vert) (Passes 41.77 cfs of 158.77 cfs ntial flow 2=Orlflcg, I2 YR C Sttructur (Office ConWls 14.32 cfs @ 10.25�) n1�:I:IL:I1:l:I:IL.II nM�IIIiI.::II1L1I.I- g__--- ydroareph ' ham. 53.56 cfs _,__;__;__;__;__�__,_ r_ ;__;__,__,__;__y__1__;_ I_ ;__ __ __ i , , , , , , , „ ,, ,yam, __ __ __ __ __ __ _ _---I----------- __ __ ■ hna 6.84 cfs -,r � enaw 4.51 cfs i Prim 55 ���, 4n5.;. yy '--"--"--'--`--`--:- r---,1rftV r,4re�w2*.40 IaY- y 6.50 cfs I ;100- W AN019104l; ontrollin 3=Orifice -10VR Controlling Structure(Odfice Controls 14.36 cfs (a� 6.58) eras 11R'}l0' w- Ainia=l 340:ac' ,, _,__ ;__;__ __ __ __ __ _ __ __ __ _ __ _ Riser (Weir Controls 13.09 cfs @ 2.07 fps) a 15 cfs___________________________________________________________ L„ a a, L L L 1 1 1 1 1 1 1 „ 1 1 1 sa - - - - - - - - - - ---i'elak-Ete""7�5' , 1 1 1 1 1 1 1 1, 1 1 P.G*kjEj6*--P01.47' PG*k:Ej9*--4j8.01'' 1 1 1 1 1 1 1 1 1 1 1 oa ' eF 9 r 35Gf ---,--,--T--r--r--r--r-------------i�-- -- e03- -- - 0 8 cf ?a� r99 econtla Outlelow Max=0.00 cfs 5.00 hrs HW=434.00' Free Dischar e rY @ 9 ) zS=Emergency Spillway (Controls 0.00 cfs) iS4oeag es3 c( D , „ 11111,,,;,, ::;;;,,,,,, - - --,,379 - ,, „ - % • --`-''-'--'--'--L-`--`--`-J--J--'--'--'--L--`--`--L-J--'--1-- a 1 1 1 1 1 1 1 1 -_ -'--'--'--T--�--r--F-n--;--I--I--T--�--r--F-n-I--;--7--7-- '. Pond BMP 3: SWMIBMTENTION BASIN 3• / MP3 RE 11 _ 1-- ,, , 1 1 , , , , , 1 I I I, 1 1 I I I.. I i _ __ a 4 ,_r__r___T__r__r__r__r__r__r_�__T__T__T__r__r__r__r_n__ I__r1 0 1 1 1 1 1 1,,, 1 1 1,,,,, ___ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ J J 1 1 L L L J J J J 1 L L L J J J 1 L ,' , I I I I I I I I I I I Hydrograpd _ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ 1 LL zs 22.47 cfs __r �__T__r__T__r__r__r__r_I__T__i__T__r__r__r__r_�__i__�__ m, 1 1 1 1 1 1 1 1 1,,,, 1 -r -1 -, -, -T -r -r -r -r -, -, -, -T -T -T -r -r -r-, -i -1-- , 1 1 1 � 1 I I 1 1 1 1 1 1 1 1 I I I __ __ __I__'--'--'--'- __ __ __ __ __ __ __ _ __ __ __ __ __ • J J J11ILLJ J J J 1 L L L J J J' 1 _ __ _ __ __ _ _ __ __ _ __ __ _ __ _ __ __ __ J L J , L L J L 1 J , ■I 115.80 cfs ar ■Prewy i--r--p-ATalk=7t11.370ra .-:II:.I:1:I:11.I- ' 1 1 1 1 , , , 1 1 1 , , , , 1 1 I 1111111 1 1 1 1 1 1 1 1 1 Lr ■ , , , , , , , 15 ' ,, 1 1 1 1,, 1 1 1 1 1,,,,,, i i _,___,_____________r__r__r__,__�__,__,__,__ T__ r__ r__r_- ------- • , , , i , _ i�e[ t 9LVr_ _ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ T l T r r r l l l T i T r r l l, T T 1 1 1 1 , , , , , ' ,, __ __ _ __ __ __ __ _ __ __ __ __ __ __ __ _ __.__1___ __ ti, a_ a: L L L a a., L L_ai + _______-_:: __-_-l___-:: ___-_-r dd_ ���� qqN�rh ,,,,aa_ : 1gre49 or'-D4T�F T4� 41i110-1II:I:II,1:I:I.II ,, ,• I I I I I I I I I I : : : : : : : , , , , , , , , , , , , , , _ __ _ __ _ __ __ _ __ _ __ __ _W�yy,,yy r r , r , T r , I I , i i ' 1 _L_J _L_J _L _L_J _L_J _J _L_J _L _L_J _L_J _1 _L_J 5 10 15 A 25 % % 4 4 50 % E, % m 15 s 85 90 95 1W 105 110 115 1m 5 10 15 A 15 90 95 ID IS 50 55 BO re m m 4 85 w 95 100 105 110 115 1m r , , , , , , ' , i i i i i i i i i i i i i i i i i i i i i ' 5 ,0 15 A % % % 4 45 50 % fi0 65 m 15 4 % 90 % 100 105 11e 115 120 Time (M1ours) Time tM1ours) p : , , , , , , , , 'I _ r__r_,__r_h__r__r_,__r_h__,__r_�__ r__r _,__r_�__ r__r _,__ rme n (ours) Pond BMP 1: SWM/BMP1 (RETENTION BASIN 11) Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) _ G 42.O8afs _ II Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Discharge Stage D,,Oar, --i-'-'i--i'-,-4--r----i-------i'-r'i--r-;--i--I'i-- _ __ _ __ __ __ __ _ __ Stage -Discharge __ .. _ _ __ ■P,i i.. DPrimary 44 ' j AA _ seer ____ _______ _______ a--4 L___ ' , 447 °°a ---I-----I------I _____I-----i-----i----- i-----i-----i----- i--- 5 10 15 20 25 30 35 °0 as 50 55 60 65 70 75 aD 85 9J %,00,%11D 1151A I , 1 1 1 ____ __I______r_____T_____T_____ - ? Time (hours) 44s I______r_____ T_____ T______r___ 1 , 1 1 1 1 1 1 1 1 1 -__ .__ - r! 44a 1 J L L 1 J L 1 J L _____ ______ _____ _____ _____ _____ _____ _____ ______ , J L , 1 J_ L , J L , i , , ' ' V c '' 443 __ ___ c g 44z I I I _ u, 1 1 ;____ 1 1 1 1 -____T_____-______r______T_____-______r_____T_____I______I___ cu___ ______ ______ ______ ______ _______ ______ _ _ baewP w.ingm nn, 390 , 1 1 1 1 _____ _____ ______ _____ _____ _____ ______ _____ _____ ______ ___ L a a L a a L 036 1 , , 437 436 500 , 0 to 2) aD 4 w 60 m 4 90 40 0 10 211 4 is he 4 m OD 90 0 5 10 15 2D % s Dlacherg• latest Discuss. lass) [Message Icte1 201502 NP E TA T 1124-hr 100-Year Rainfall=8.95" 90 S C ype 2 1 2 NP E T.1 T e1124-hr 10-Year Rainfall=8.95" 0 50 90 3 C yp 2 1 2 NP E T.1 T //24-hr 100-Year Rainfall=8.95" 0 50 90 3 C ype090 20152NP E TA T 1124-hr 100-Year Rainfall=8.95" 3 C ype Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2018 Prepared by HP Inc. Printed 12/16/2016 HydroCAD010.00-13 s/n 06356 O 2014 HydroCAD Software Solutions LLC Pace 86 HydmCAD4D10.00-13 s/n 06356 0 2014 HydroCAD Software Solutions LLC Pace 89 HYde0CAD010.00-13 e/n 06356 02014 HydroCAD Software Solutions LLC Paae 92 HydroCAD010.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Pace 95 Pond BMP 1: SWMIBMP( (RETENTION BASIN 11) Pond BMP 2: SWMIBMP 2 (BIO-RETENTION FILTER) Width (feet) 5.00 18.50 Pond BMP 4: SWMIBMP4 (BIO-RETENTION FILTER) re rap P re P _ rim ch ay OutFlow Max 154 64 cfs @ 12.35 hrs HW=440.56' (Free Dis arge) orBarrel) Culvert Passes 154.84 cfs of 185.77 cfs ential flow 1 1( vat ) fps) Hyd1°o re ph '..' -, -_ _.• r r ■ 115.86 cFs_1__ __ I_ 14.15 cfs ■P^ , - 9.67 cfs , L 1z0 i--+--t--F--, - -�-' Inflow Area=25.,teq. - ''""4 1 ,__-__J__J__L__L__L__L- L-:---1 f16*--,--L--L- 1r00!.--.- a1 cfs 13. i i � .� 3=Orifice-10YR CoMrollln St eWre(Odfice ConMroIs11888 cfs@ 8.64 9 3 Col iPs) m '4 fl a 9.45 cfs -- -- -- -- -- -- -- - - _ 1 540 ac � __ _____ + ' k F -Rise g Controls 119 7 r We ds 4 3 ' . � ' _ no --_'--'--'--`--`--`-'--'--'- PC ak Elev=4bS9T ------ -- -- -- -- -- -- ---- -- - - -- -- _ 13 i A-ei, �e� - 9 1 L L - - _ �Elev 438.84' ,00- -,_,__,__,__L__L__L_a_,__.__a__L__L__i___i__ ,.__L__L_ e0 85.24cfs __,__,__a__L_ _____________a__«_sftl 1a9e=240,Q2'�gf_ , , , , ,______________L__L__L__,__,__,__a__Y _ __ __ __ _ __ __ __ 11_____i__i__(__r__�__�__�_J__i__i__i�`EOospe r - '- �• `e'"77`"' ,__ I__ I__ I__, ,_ ,__ e tlary O - cfs @ 1 - (Fr a Discharge) nc Sp Max- ei 2 0 ecoEmergencySPillway(WeirControls39: 3cfs@ lips) 6 I ____ __ __ __ __ __ __ _ _ __ __;Storage=4,067 e'f 1 1 1 1 1 1,,,, , , ro,_,__,__,__,__,__,__,_,__,__,__,__,__ __,_,__,_ __ __ __i__ r _ "/ _ __I __, _, __,__ _ __ __ __ __ _ __ __ _ : : L L I J J 1 : : : : L �� Pond BMP ( TENTION BASIN 3• SWMIBMP3 RE II) ] _ J J J 1 L L 1 A 1 J 1 _J_ _J �]' 1111I : : i ___1__,__Trr__r__rr_.__T__T__r__}__ _-__-__-__ 6 _ , , , , , , - r__-__r ! T _ __ __ __ __ __ __ _ ____ _ __ __ __ __ __ __ _ __ __ _ , - -1 , , ♦ e r r r , , -, , � T r r r -1 , ,- � HYd,o■rsP h 1 _ u ___ __ __ __ __ __ __ _ _ __ __ __ __ __ __ __ _ __ __ __ i , , , T r r , , , �__�__�___r_ I I I I I ' --'--1--1--L--L--L-i--i--1--L--L--L--L-1--1--1--L--L--L- �I, _ ______ __ __ __ __ __ __ ____ __ __ __ __ __ __ __ _ __ __ __ , ' -1 -1 _T -r _r -r -r_ _l -1 _l _T _Y -r -r _r_, _, -, !; ----- 228.81 cfs , , -i ~ ■IIgN/ - T--� -;-- - --I -;--. - Inflow Area=40.3W. a� - la""w.ro„fien a _____ __ __ __ __ __ ----..........4-- __ __ __ _ __ __ __ 1 1 L L ,', , , , , , , i- ti : : : : : : ti : : : : : : : ti ti -,' -- . , , La L, , L, 3 , , , , , , , '--'--'--J--`--`--`-'--'--'--'--`--`--`-'--'--'--`--`--`-t- • I 1 1 1 , , , , I I , , 1 1 1 1 1 1 1 I d , - - _L_J _J _J _1 _L _L _L _L_J _J _J _J _J _1 _L _L _L_J _J _Ji - - - - - - - -- - -- Oak EIeV-.44B�58 P , r -. - I I I I , , , , , , , , , , , , , , , , , , , , , , , , , , , , , i • r -r-1 I I I I I I I I I -. -T -. -. -r I I -,I , , _ qr�A�y.�p I I , I __r_r__r__r_T__I� ' 2 - - - - - - -- - - - - - - - - - -- 1 , , , , , 1 r__r_r__r_i__r 1 1 1 _J__,_ �_L__._J__, , 154.06 cfs __ _ __ 5 10 15 20 2fi % % 4 4 50 M 60 65 he 75 W % 90 0 Its Its lie 115 lie 5 10 15 20 % % % 4 4 50 % W g5 m i5 W % BD % 40 165 lie lie lie 1 ' " i - : - i--i - i--i - : - i--i- i-- i--i - i--i- : i--i-I--I: i-- 5 10 15 20 25 % % 4 4 SD % 60 65 m m 90 g5 w % IN IN 110 115 120 Time (hour.) Tim g,nn) - / / _ � _ _i _ i _ _ r _ L 1 Time hours) Pond BMP 1: SWM/BMP1 (RETENTION BASIN 11) Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) • , , , c 1 __ :-:_.__I__ __ _ __ __ _ __ __ _ __ _ __ _ __ r, , r r ,-, , r I-, Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Discharge Stage -Discharge I-11 1 1 , , 1 , , , , 1 1 , L_J__,_J__J__L _J__L_J__J__ 4 ,--,-,--,--.----,--,--,--,--,--,- Stage -Discharge 450 ____ ____ ____ � ____ _ � r- ,- r- r- i i i 1 ❑Pnma,v ____ -__ ___,`_1__1_1__.__L _.__ 40.18 cfs : : : : : : I i i I 1 , I 1 , d49 _1 --I_L _� , i , 4 , I , I seer ___ 1____ ,____ 1_____ ,_____I_____,_____ ___ _L _a _y _L ♦ , _L , i , m N7 ' , , , , , 0 �- 1 1 1 1 1 I I fi 1a 16 m % a1 % 4 4 50 ■ as ■ m m sc■ w s 100 10fi 11a 116 110 1 I 1 I , , i , 1 1 1 ______--______r_____r_____,_____1______ ______T______- . TY Pawry ,____ ,____ r_____ T_____,______r___ ____, ____, __ _ ___ ___ ____,____, ____ ____ ____ __ _ _1 _J _L _L _1 _J _L _1 _J _L I I s'°2 w r , r r , ,- r T ,- r - ---- ---- ---- ---- ---- ---- -- --------I------;- ' .., 1 1 1 1 _____r___________r_____r_____T_____I______r_____r_____T______r___ ro, -----------------r------;----- I , , , , !_ y i I ----I. ,.. ,-.. _______________ ____________ -----L-----'------L-----I-----1-----'------L-----1-----1------L--- , 1 1 1 1 1 -----I-----I------�-----r---------------- 437 Benel(QR.vd7 I 46 0 t0 20 30 4 fiD aD m Be ro 1% a 10 m N JO 4 60 is a0 w 0 5 to 15 20 % % % 4 4 50 % 00 as DlsMrpr 114a) Discharge ON Oetlerga lots) North Pointe Section 1 SWM Compliance -Analysis Point 1 Computed Post Computed Combined Storm Pre -Development Allowable Post SWM/BMP Devlopmi Runoff Post Devlopment Runoff Event Flow Development Flow Elevation From SWM/BMP at Analysis Point (yr) (cfs) (cfs) (CS) Oft) (cfs) 2 Year 5.42 5.42 4.02 446.63 4.08 Storm 10 Year 22.8 22.8 22.47 447.85 22.69 Storm 100 Year 70.59 N/A 85.24 448.97 85.93 Storm North Pointe Section 1 SWM Compliance -Analysis Point 3 Computed Post Computed Combined Storm Pre -Development Allowable Post SWM/BMP Devlopment Runoff Post Devlopment Runoff Event Flow Development Flow Elevation From S at Analysis Point ����„„.- (y) // VCfs) / )Cfs) (!WM/BMW 0s) ($) 0s) 2 Year 12.57 12.57 11.96 437.05 12.00 Storm 10 Year 44.71 44.71 42.08 439.20 42.22 Storm 100 Year 125.20 N/A 194.25 440.56 195.12 Storm North Pointe Section 1 SWM Compliance -Analysis Point 4 Computed Post Computed Combined Storm Pre -Development Allowable Post SWM/BMP Devlopment Runoff Post Devlopment Runoff Event Flow Development Flow Elevation From SWM/BMP at Analysis Point (yr) (Cff) (cfs) (efs) eft) (eff) 2 Year 5.67 5.67 0.76 438.37 5.78 Storm 10 Year 22.16 22.16 4.15 438.61 17.14 Storm 100 Year 65.41 N/A 9.45 438.84 40.12 Storm (/) (D z Q)W ELU Z �W OLU F�N O 0 to CQ I F �4 CC) O 1104 U O ' ^ U "r'I 0 i U 11 0 P N ,_, 5 U 0 U DE U .,r-Ir rr� tsessel ``^^ �4J U U .--1 C) +% � rat •r.1 rn 1t M 0. � U ON S a�51'-04 tz 0 Pet 1 � . -W U L) O A a O Y U) Q 0) C 0 0 C Ol W (n 0 a) C 3 I- rV 04 O rV e O 0 0 0 0) 0 0 0 4) n 0 4) c 0 E a) a) c c T C 0 BRIAN C. MI CHELL cc 05/18/2022 PP \ftF��SSIONALN . a It'. C r ) 'C �%O ") �v�7111 �( �1i `y (j t_ f f \� � 1ti� / 1-1 � Cie) Cie) 0 O I' •� � V I -5rr� 3 I^� Q) � � 17, 0 � ^ E('''� O N � v �I r� O W ,Z) V U 0 i- " �( � � V t o L_ O V o rn C � � 0- O IO� �I [1 'r``r�ll `_4 :Iz4 c 0 Il.`I, r ` v ':I O 7 � O 0 1 Irk, v1 � C REVISIONS DATE 0 01-20-2022 N l,n4•.• C NO SCALE o r PROJECT MANAGER ' BRIAN C. MITCHELL, P.E. o, 50 C:�� 0 CHECKED BY -a c 0 PROJ.# a, .a 20140065 0 I - SHEET # T C - 10 I O Irregular Section (CurbinletCales1m8) (M 20140065_NPSECT.2 Type 1124-hr 2-Year Rainfall=3.62" 20140065 NPSECT.2 Type // 24-hr 2-Year Rainfall=3.62" label Solve For Friction Method Roughness Channel Slope Water Surface Elevation Range Discharge Flow Area Wetted Hydraulic Radius Top Width Normal Depth Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type 0 Prepared by HP Inc. Printed 1/5=22 Prepared by HP Inc. Printed 1/5/2022 Coefficient (ft/ft) Elevation (cfs) (ftz) Perimeter (in) (ft) (in) (in) (ft,/ft) (ft/s) (ft) (ft) HydroCAD® 10 00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Pane 1 HydroCAD®10.00-13 sin 06356 C 2014 HydroCAD Software Solutions LLC Page 1 (ft) (ft) Pond 10P: SWMIBMP5 (BIO-RETENTION FILTER) Pond 9P: SWM/BMP6 (BIO-RETENTION FILTER) Analysis Point 5 Normal Depth Manning Formula 0.065 0.040 418.95 417.0 to 425.0 ft 25.78 6.4 7.6 10.0 6.51 23.4 20.6 0.080 4.06 0.26 2.21 0.724 Subcritical i n co U Hy4roaMph-, HydrograpM1 Analysis Depth Manning Fo0rmula v '.-,--•--e--r--'--4--•--•--•--r--r-------------r- --� ------,--r_ oin orma an rmua o u crl Ica � Ana lysis Point 7 Norma l Dept h Manning Formula 0.065 0.010 414.03 412.0 to 415.0 ft 43.61 19.2 19.4 11.9 18.93 24.3 16.8 0.071 2.27 0.08 2.11 0.398 Subcritical QLis- i/i ' ' ' ' ' ' ' , InAp.' •Inflow ■ • 7.34 cfs • 5.51 tie p vam" _ Analysis Point 8 Normal Depth Manning Formula 0.065 0.060 405.89 404.0 to 410.0 ft 57.02 11.3 13.3 10.2 12.62 22.7 22.2 0.069 5.03 0.39 2.29 0.936 Subcritical � Qi Inflow Area=41410 ac __ __ __ __ __ __ __ _ ___ 'Inflow Area=3.310'ae Analysis Point 9 Normal Depth Manning Formula 0.065 0.037 382.65 380.0 to 385.0 ft 119.20 23A 18.3 15.2 17.48 31.8 28.9 0.061 5.15 0.41 3.06 0.789 Subcritical T-1 l:j ' ; - ,---- --, ,- - ; -;,- Peak EIev=458.39'- 4'89 c� j j j j j r Peak EIev=458.40' Analysis Point 10 Normal Depth Manning Formula 0.065 0.037 374.91 372.5 to 380.0 tt 36.55 27.9 23.7 4.1 23.13 28.9 26.3 0.062 4.90 0.37 2.78 0.787 Subcritical __,__;__;__;__;_ _ _ __;__;__i_. Storage=7,463 cf _ - - - - - - - - - - ; Storage=4,130 cf Analysis Point 11 Normal Depth Manning Formula 0.065 0.036 362.25 359.0 to 365.0 ft 142.21 23.9 14.9 19.3 13.36 38.9 35.0 0.060 5.95 0.55 3.79 0.783 Subcritical �/ N IL O 4.n efs I I I I I I I I a Analysis Point 12 Normal Depth Manning Formula 0.065 0.150 425.64 425.0 to 430.0 ft 14.74 3.6 11.3 3.8 11.23 7.7 8.5 0.088 4.12 0.26 0.90 1.285 Supercritical � I I I I I I I I I I I I I I I I I__;__ __ __ � __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ ,,,,,,,, 9 Col U �. i--i--i--f--{--I--F-Jr-i--i--i--1--F-F--F--F-i--a--i--f--f- it " ,-- --•--•--•--r-�--•--�--�- �-�--�--�--� 2. 1 : : : : : : : : : : : : : : : : : : : : : : I I I I I I I I I I I I I I I I rm P-4 i--i--i--i--:-----i--i--J--i--J-----L--`-J--i--J--J-----''-- U 5 10 15 ]a 25 30 % Lo M m a m M m 75 m C m 0 IN IN 110 115 130 5 16 15 2u 25 % % a a m 69 m is l0 l8 m M m a ,m IN ,m its ,m rl 5✓ Tr P." miss loessel m 0 . y C Pond 10P: SW MOW�D�P5�;10-RETENTION FILTER) Pond 9P: SWM/BMP6 (■B:O-RETENTION FILTER) W r��r� • fWf.4 A W p vnmary O 1� i+ei 1 In. W °�-14 F'j� ---;----- ------------- ------ ----- ------ ------------- - ------ ------ ------------- ------ - -- �b o ado a. N m (n '� o o 0 U a .� a 0 10 m W a W m 70 M m 0 ro ZI W w W m TO M V oira,.5. (a4 osa.5. W O O 10 m e-, O = 20140065_NPSECT.2 Type 1124-hr 10-Year Rainfall�.46" 20140065 NPSECT.2 Type1124-hr 10-Year RainfaN�.46" 20140065_NPSECT.2 TypeH24-hr 10.Year Rainfall�.46" 20140065_NPSECT.2 TypeH24-hr 10-YearRainfaN�.46" 20140065_NPSECT.2 Type H 24-hr 10-Year Rainfall�.46" 20140065_NPSECT.2 TypeH24-hr 10.Year Rainfal1�.46" � re Prepared t;y HP Inc. Printed 1/5/2022 Prepared by HP Inc. Panted 1/5*1M Prepared by HP Inc. Printed 5/18/2022 Prepared by HP Inc. Printed 5/18/2022 Prepared t y HP Ina Printed 5/18/2022 Prepared by HP Inc. Printed 5/1a/2022 d HydmCADS IO.00.13 sin 08358 02014 HydroCAD Software Solutions LLC Page 2 HydroCAD®10.00.13 sin 06356 02074 HydroCAD Software Solutions LLC Page 2 HydroCAD®10.00-13 sin 06356 02014 HydroCAD Software Solutions LLC Page 3 HydroCAD®10.00.13 sin 08356 02074 HydroCAD Software Solutions LLC Page 3 HydroCAD® 10.00-13 sin DOW 02014 HydroCAD Software Solutions LLC Page 3 HydroCAD010.00-13 sin M356 02014 HydroCAD Software Soludom LLC Page 3 Pond 1OP: SWMIBMP5 (BIO-RETENTION FILTER) Pond 9P: SWM/BMP6 (BIO4tETENTION FILTER) Summary for Link 7L: Analysis Point 5 Summary for Link 11 L: AP 6 Summary for Link 12L: AP 7 Summary for Link 14L: AP 8 Q •3 xyarpgnpn Hyaroy.pn Inflow Area = 31.550 ac, 24.24% Impervious, Inflow Depth = 2.66" for 10-Year event Inflow Area = 8.950 ac, 16.05% Impervious, Inflow Depth = 2.65" for 10-Year event Inflow Area = 13.750 ac, 12.10% Impervious, Inflow Depth = 2.64" for 10-Year event Inflow Area = 18.790 ac, 9.06% Impervious, Inflow Depth = 2.63" for 10-Year event C '--`--'---•--'--'--'--`--`--`--'--•--'--'--'--`--`--`--`-•--•--•-- I�■ Inlbe '--'--'--`--`--`---"--"--'-- -- -- -- -- - -- -- - e mom., Inflow 25.78 ds @ 12.68 hre, Volume= 7.005 of Inflow 33.74 cfs @ 12.04 has, Volume= 1.974 of Inflow 46.31 ors @ 12.05 his, Volume= 3.026 of Inflow 57.02 dis @ 12.07 hre, Volume= 4.125 of 14.79I �-;--1--'--'--`--`-L-'--'--'--'--'--;--t- L- `- -- -- -- I■v,ya.r1 , 11.10 cfs __ __ __ __ __ __ __ _ __ _ __ __ __ Dvnmery Prima = 25.78 afs 12.68 his, Volume= 7.005af, Aften=O%, La=O.Omin Prima se 33.74cfs 12.O4has, Volumes: 1.974af, Atten=O%, Le =O.Omin Prima = 46.31 cfs 12.05hm, Volume= 3.028af, Atten=0%. La =0.0min Prima = 57.02 afs 12.07 hie, Volume= 4.125af, Aften=O%, La=O.Omin 1 ,,,,,, y..y�q��y�,- 1 1 y'-y �y 1 Primary 9 Primary 9 Primary 9 Primary 9 E 13720F5--i--i--4--1--1--I---e----i--i� PTA Arr1a�-�' 110.77 cfs I�r�fl{egry[gg. ...�. . . Primary ow-Inibw Ti-500.12000 -O OS him Primary outflow Time -50012000 hire dt 005 hire Primary )flow -loft m -50012000 hire, dl-O OS him Primary ow-Inibw Ti -500.12000 -O OS him O' fl r4 ,a __ __ __ __ __ __ __ _ ,__r_,__,__,__r__r__r__r_ __,__,__,__r__r__r__r _�__�__,__ ry _ p _ _ ry _ Spans: _ _ ry _ pa _ _ _ ry _ p _ _ hire, hire, dt= C 01-1 i__J__J__J__J__.__L__i_ L_j__i__i____ __ _ __ _ e� - : : : : : : : : : R _ _ __ __ __ __ __ __ __ __ _ __ __ _ _ Link 7L: Analyak Point 5 Llnk 11 L: AP 8 Llnk 12L: AP 7 Llnk 14L: AP 8 .LL J ;' ,,,,,,,,,,, 1trrrrt f ,,,,, ,-`-•--•--•--•--'--•--•--•--`-•--•--•--•--•--•--•--•-'--•--•-- IyBapntph 1adMv5aM1 iy4,a■npn I(Y4rW,5PM1 t_r_r___,__,__,__r__r__r_________________r__r__r---------- , , , , , _ _ _ _ _ _ _ __ _ _ _ __ _ __ __ _ __ _ _ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ _ _ _ __ __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ ____ _ __ __ __ __ __ __ ____ __ __ __ __ __ __ __ _ __ __ _ T j r _._�_. _, _, _, _• _. _•_y _. _• __ __ __ __ __ ___y _y _• , _._y _. _, _, _, _• _. _. _._. _. _, _, , _• _• _. _y r _y _L_i_. _♦ _. _. _: _L _L_J _J _J _. _♦ _. _L _L _L _J _� _. ' i _r_ i _ _i _L _i _i _i _i _ _ _i _i _i _i _i _i _ _ _J ■q, ,_ ,_ ,_ ,_ ,_ _ _ _ ,_ ,_ ,_ ,_ ,_ ,_ _ ,_ ,_ ,:NAoe ■11111 "'� ■Pnmary r , _ _ __ __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ ' l -1 -1 -T -i '� -� '� -,-1 -1 -1 -T -i '� -� -r-1 -1 -1 ___ __ __ __ __ __ __ ____ _ _ __ __ __ __ __ i _____ __ __ __ __ __ __ ____ _ _ / ' ,_r_r_�__7__7__T__r__r__r_1__n__7__7__7__T__r__r__r_1__i__i__ ____ __ __ __ __ __ __ __ __Inp¢wiWe"I 5$Q-a - 11 fl a=8 Q'a iln Icjw;Aje$-� TS�;a !In f W!AFe :79D;ek v , t ' 7 _ __ __ __ __ __ __ __ _ _ __ _ __ _ _ __ _ _ __ U e • r r , , r r r r r , , , , , r r r r ,__i__,__ • __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ ___ _ __ __ __ __ __ __ ____ __ __ __ __ __ __ __ _ __ __ __ M , , , , , , , , , , , , , c r r r r r, r r r r,, F F F i 1 1 i 1 1 "i J JBRIAN C, MI CHELL 0 -`-1---'--`--`--`--`--`--'----'--'--'--`--`--`--`-J--J--'-- -�--�-- - -- -- -- -- - -- -- -- -- -- -- -- - -- -- -- -- - -- -- -- -- -- -- --I-,-- -- -- --I--,--,--,-,--,--,-- - - -- -- -- -- -- -- -- -- - -- -- -- -- -- -- -- - -- -- -- as. -- - -- -- -- -- -- -- -- - -- -- -- -- -- -- -- - -- -- -- Lic, No, 035724 v J -' -'--' -' , . r , , . 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L__L _.__ t__t__ t ___ _ __ __ __ __ __ __ _ __ __ __ __ __ __ __ __ _ __ __ __ W Jp G�� 5 10 15 20 25 30 35 40 45 56 55 66 65 70 75 00 85 m M 1W 165 116115120 5 10 15 20 25 30 35 66 45 W 55 80 85 70 75 00 05 90 95 100105 1101161W t ' ,--i----------------4----F-.--,--,--,__,__.__.__.-J--.--i-- t , € - L Tim, (homes) Time(hom.) , , ' ' ' ' ' ' ' ' , _ _ __ __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ __ __ __ S`)O '__ _�__'__'__'__'__'_' _! _'__'__'__'__'__ __ __ _ __ __ _ ___ _ __ __ __ __ __ __ _ __ __ __ __ __ __ __ __ _ __ __ __ r , , r r r r r r , , , r r i i i i - 1_._ �__ __ __ __ __ __ __ _ __ __ __ __ __ __ __ _ _-I--,-- FS NAL EN a 1 ` ` ` ` ` ` ` ` ` `J J-' 1- I I ____________________________________ T Pond 10P: SWM/BMP5 BIO-RETENTION FILTER Pond 9P: SWMIBMP6 BIOaiETENTION FILTER I I I I I I I - - alapa4),wM1aroa ■h595.0Ytl■rys ,11 , , , , , ' __ __ __ __ __ __ __ _ __ __ __ _ __ _ _ __ _ __ _ __ __ __ __ __ __ _ _ _ _ __ _ __ F_i__i__i__ f__ L__ L__L__L _J__J__J__ _ __ __ __ __ __ __ --I'--,,- __ __ __ __ __ __ _-I,-,,-- __ __ _ _ _ _ _ _ _ _ C al , , C i i - S 10 III W'n W W LO 45 W M M M TO 75 M M m M Im IM 1101131m 5 10 15 W% W W a O5 W 55 W 65 M 75 W% M M tm 1M 1,01151W 5 10 16 M M W% 0 a W M W M M 75 W M M M 1W 1M 110 lla 1m S 10 15 M D W% M 0 W W M M ]0 73 M M m W 1m 1M 1101151W O , i , i Tb (Fowl ,me Ihoury Tim. tomnq nine(hour) U ___________________-_______,__ , , , , , ' , , , , , ______________r_ ,______ _____ _______ ______ _______ _______ ___._____ _____ _______ __ N s p 3 ----------- ' w U - ----,-------r--------------r------,------ aaanwl----------------------------------------- -- 1}v^() ����rrrIIII Y d56 - � less, r^ F� ti =1 L ~ I ow I ; 0 t0' W' W' a0 W' W' 70' W' W' 0 ,0' ZI' W' W W' W' ]I M' r� a, osa,.ps (�) oua.5. la4 O tU 6-1\I V ,Ue�� O t q N o 20140066 NP E T.2 T If 24-hr 100Year Rainfal1=6.95" 2014006 NIP E T.2 Type 100-Year Ranfall=8.95" 20140065 NP ECT.2 T e1124-hr 10.Year Rainfall�.46" 201400 NIP E T.2 T H24-hr 10-Year Rainfall=5.46" 2 1 NP E T.2 T 1124-hr f0-Year Rainfall-o5.46" 2 1 NP E T.2 T e1124-hr 10.Year Rainfall-:5.46" W I o U r 40edt $ C Type 5_ S C yp S iP dby S C Type 0 40edt S C Type 0 40ed S C iP 4) Prepared tly HP Ina Printed 1/Pan, 3 Prepared by HP Inc. 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Printed 5/1Pace 3 � r� V .-I L HydroCA0010.00.13 aln 08356 02014 HydroCAD Software Solutions LLC Page 3 HvdroCADn 10.00.13 sin 08356 02074 HydroCAD Software Solutions LLC Paae 3 HydroCAD®10.00.13 s1n 06358 02014 HydroCAD Software Solutions LLC Page 3 HydroCAD010.00.13 sin 08356 02074 HydroCAD Software Solution LLC Pace 3 HydroCAD®10.00.13 do 08356 02014 HydroCAD Software Salutlam LLC Pan, 3 HydroCA0010.00.13 do 06358 02014 HvtlroCAD Software Solutions LLC Page 3 rGI �t ++ Pond 1OP: SWMIBMP5 (BIO-RETENTION FILTER) Pond 9P: SWM/BMP6 (BIO-RETENTION FILTER) Summary for Link 16L: AP 9 Summary for Link 18L: AP 10 Summary for Link 2OL: AP 11 Summary for Subcatchment 11S: AP 12 � N � � U O L gripM1 ` "1 O _' J J ==J i==i==- InOow Area fi2A10 ac, 19.04%Impervious, Inflow Depth= 2.62" for 10-Near event Inflow Area 87.110 ac, 20.04%Impervious, Inflow Depth= 2.63" for 10-Year event Inflow Area 89.370 ac, 19.38%Impervigus, Inflow Depth= 2.61" for 10.Vear event Runoff 14.74 cfs� 12.04 hrs, Volume= 0.880 at, Depth= 3.20' �I HytlrO■rapn HYtlro -- ---- - -- -- -- -- -- - In Mx - ----- - I InOow 119.20 cfs 12.07 has Volume- 13.615 of Inflow 136.55 ors 12.07 hrs Volume= 14.722 of Inflow 142.21 ors 12.07 hire Volume= 15.093 of r 29.88 ofs--------------f--f-f- ivam,y 22.43 cfs I,--"-- -- -- -- -- ------ -------- ---- L Primary = 119.20 2.07 olumil 13.615 of Atten= g= .0 min Primary 13655 2.07 Volumes: 14.722 ften= % Lag= .0 min Primary = 142.21 2.07 Volumes: 15.093 Ben= % g= 0mm - g - m pa=5.00.120.OD -0.05 has U C n _ - Type _ 'ma cfs� 1 hre, V 0%, Le 0 'mar cfs� 1 has, V aF, A 0 0 'ma cfa� 1 his, V at, A 0 La 0. Runoff by SCS TR 20 method, UH SCS, Wei hied CN, Time n his, dr 1�1 _J _i _1 _i _L _L 28.88 cfs ,--T-;--;--;--;--; --;_ - -- ,- 31 72 • T II24-hr 10.Year Rainfall=5.46" •a f flow Area-4.410 ac oa cfe i-,_I_nflow Area=3.310 ac- rPe n ~ Q' -W. I-- - -- -- -- -- -- -- ---- -- - Primary outflow, = Inflow, Time Span= 5.00-120.00 his, dt= 0.06 his Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hire Primary outflow = Inflow, Time Siren= 5.00-120.00 hrs, dt= 0.05 him 1yl Q4 � c i_;__:__i__i__i__i_i_ __;__ipeak EIev=459.10- __ __ __ __ __ __ __ __ __ _ _ _Peak EIev=458.98'= Aree(ac) CN Description O rr ,, o za ' �c_i-_i__{--+__F__l__F_'__i__'- Storage=11,90E-cf_ 17 _ __ __ __ __ __ __ __ __ __ _ Storage=61 L ,,234 cf Link 98L: AP 9 Link 18L: AP 10 Link AP 11 2.6800 75 114 acre lots, 38%imp. HSG It �( ^q � c a O IANi5Y15PM1 HyereQapM1 Xy4ra■,yM -- - -- -- 3.300 79 Wei hied Avers e , , r r r r 9 9 r f� L J . J__ .,, L L L " 16 u ■ - - - ■ Iona mow 1 838 49 85% A ' a_J-_J__J--J__L-_L__L____J__J J__. 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L L L.., L L L L ubeatehmaM N ' __,__,__,__7__T__r__r_�__�__�__ W i i i f F -'r i i- 1 F--F F--F i 1 i F F I so i i i r i i i i F i i i L , 1 1 f � fT T f l l � i f � T ' ' Y 70 i__.__♦__♦__L__L__L_J__J__,__.__L__L__L__�_J__♦__.__L__L_i_ L ___ __ __ __ __ _ _ __ __ __ __ __ __ _ __ __ __ __ __ __ _ ! i i -� --i i i i t f i -i i -f i- Hyd,09 I, y/ 1' - , , , , , , , , , , , , , , , , , , , 00 S T T r r f , , T T r f r , l T 7 f f T , , . v • � , , , , , , $ W-,_-'--'--'--`--`--`-'--'--'--`--`--`--`-•--•--'--'--`--`-•-- s' 7U i"i--t"h--F"`-i--i--i--t--t--h'-`-i--i-- I--}_-h--I I --- -- -- -- -- -- - -- -- -- -- -- --I'-,,-- -- -- -- -- - - - --'-- -- ' " ' -- -- -- -- -- '_ ' '- -- '- -' --_ __ o e��erc at 5 10 1fi W R5 W % CO 0.5 W % W M TO T5 M M W M 100165 110 ,tfi 1W 6 10 15 W % W % 40 a5 W 65 W M M 75 W M W M tm 1M lit, lis io . i_ i_ i_ i_ i _ i _ i i_ i_ i_ i _ i _ i _ i _ i i_ i_ i _ i _ ___ __ __ __ __ __ _ __ __ __ __ __ __ _ __ __ __ __ __ _ _ , _ __ __ __ _ __ __ __ _ __ __ __ __ _ C ___ __ __ __ __ _, _,__,__,__,__, __, __ _ __ __ __ __ __ __ 1Tn lime gwn) TFn pw,w W -, -, -, -, -r -r -r-, -, -, -• -• -r -r -r-, -, -• -r -r-r- 60 ' T L 14.74 Cfe _ ,_ __ __ __ _ _ _ _ _ _ __ _ _ _ _ _ _ _ , 50 ' L t J J ♦ ♦ L _i _, _' _r _r _r _r_, _, _T • r r -r -r-r--r-, -r -r -r -r-r- _ _ ,_ ,_ ,_ , , ,_ ,_ i_ i_ _ _ _ __ __ __ __ __ _ 16 _ _ _ _ _ __ __ _ m -, -, -r -r -r-r-, -, -, -r -r -r-r J - , , rrr Y#-h Pond 10P. SWMIBMP5 (BIO RETENTION FILTER) Pond 9P. SV9MIBMP6 (BIOa2ETENTION FILTER) r_i__i__i__t__F__�_i__i__J__.__}__�__t__F_i__i__}__�__F_a_ __ __ __ __ __ _ _ __ __ __ __ __ __ ♦ `_ _ _ __ __ _ __ _ __ __ __ __ __ __ _ __ __ __ __ __ _ _ 13 _ _ �1�.l�,ggf IEBlilfilt*�46^ c ' , 30 •♦♦ L L -L .. J♦ L L s L J J L l L J J J J i i i J J J L L L A Stage-DiscM1arga et5■5atmwr■. - • '-_1 L J ;__ L_ . __ __ - _ __ __ __ __ _ ............. __ __ __ __ _ __ __ __ __ _ __ __ ..............._ __ __ ...... __ ,2 _ , REVISIONS •�, L ' i, , T T r f Tr f f............. r f r , T T r r f, l lr, , Tf r'Y- 11 • e� � , 10 -- -� w��umIy 8 _$f _ CDATE NS ITEM w 5 10 15 20 25 30 35 16 45 56 55 60 65 ]o 75 60 85 96 95 100 ro5 110 115 130 8 10 a{ W M W M 4o N M M M M W T5 M M M M 1m 1M ,m its 1W 5 10 is A % W % a8 a W M M M m TJ M M 68 M ,m tm t18 115 1W �- a -- -- -- -- -- -- - -- -- - =RYnpQ-DIIt 20��-- 05/18/22 PER COMMENTS .m-, ' Time Ihear:l TFm PewV miss (he•e) e .- -- - -- -- -- - -- -- . , rTrY_24_�In_tjr__ to , ______7______Y_ _____ ,____ ____ _______, _______,_-.. -. __ ,______ ,______ ,______ __ , , , , r :5 _ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ C , I d f f f r f f f f r f f f f f f r O , , , , , , , _ __ __ , , , i i i 1 5 10 15 20 25 30 35 40 45 50 55 66 65 76 75 66 85 W m 100 105 110 115 ,W T Tlme (hours) I CL a a5T M o to W 30 ao 50 W 70 W m o to al m a0 m M ro ao DATE m osehrpe (cp) oivehnp. loss) L 01-20-2022 m SCALE C NO SCALE o -C III,PROJECT MANAGER a, BRIAN C. MITCHELL, P.E. o, ii DESIGNED BY BCM / LEN t CHECKED BY -0c 0 PROJ.y c a 20140065 0 SHEET A '0C-l0A r I- all =I ni. A ' � v. _ _� _ re ► " ¢ �� �i err:•-. �i® IC`' ,� uL�,t� - .0 .. .r..- .IYN ' ;.a 1 ��.'1.�,�/��j' � � i� � , � ( � � •i 4J� � �� �� ���� sw -C.�` � it i ������ ,, � , � � ►�.�� �I �t tom. � � �� � .� �.�� milli VA WEN •,,�A 117 ANPR `� � ai�����.���►�� a � �\ `� .�� ' III IVA Mall Ilp '�-"'`--- t �r�� •, sue,/ '• � ,� . I i I `^s v r" r , -- .•• ����,+��'' Gael � th ` � .� �� �►\p� �.��. //. ���� _ c 4 . )_ ►-"i-.,� ,,�1,,- �� -- - Ica �; ' '..�, a. r ate► :�- ��'� , .:s �t O 0 O O 0 O O 0 °°° •p �a 0° 0 0 0 0 0 0 0 0 0 0 0 0 0 °�. 0 0 0 0 0 0 °`6 ¢ 0 0 0 Da. O o 0 ° o a' o ON 0 0 � o a o o/ o ° - o ° o 0.- o 00 °% O:0 0/o 0.-0 09 0 9 0 o� O ° �.yq' o .eo0 000 0 0 0 0 0 0 0 0 0 0 0 0 0 DED TO APPLICABLE / 0 81 1 /o °O000OOO APPLICABLE SITE AREA= 131.25 ACRES 0 ,-� 0 / � 8' (°o °'+ °,r / / / / / � \ p� I \\\\. \ Iposr 37 0 0 8/° ' " _ \ l 1 GRAPHIC SCALE UO 00 / o� 9 %pc j�°od6000a-%-°°A_ %.�` . / � � \ � \` / _ (IN FEET ) 1 inch = 150 ft. SWM/BMA 3 BYPASS • i, e -' `, i / / / / % ,�_ ��� \ <' % l I \ \ \ \ \\\ �' — •! TO AP 3 (%iA-3A) Izx I If 1 1 / 0000 oop0 ° � I'/ '' ---- ---- jJ � � AREAS CID � I O \ o00 o 0 0 p .. Q. 0 0 0/ 00 000 f I O 0 0 c OO� (Pop \\ 1 I I'I i i I \a o / 8 b / �\ \ \\\\ = \ I / t `ems o cP tb� 0 $ / o ° °/" � cfl� tb o - i 0 0 /•' / / \ 8 ... �, nub tP \o O i 8 00 00 o - o CP A?OoO / w� • � + • ¢„'. ' ONSITE OFFSITE (NOTAD SITE AREA) NO. ACRES IMP. % BYPASS 1 1.74 30 BYPASS 2 0.84 26 BYPASS 3 1.40 27 BYPASS 4 9.52 28 BYPASS 5 1 41.48 26 DA-1 22.13 43 DA-1A 3.85 6 DA-2 1.91 41 DA-3 40.31 53 DA-4 1.54 39 DA-5 3.31 46 DA-6 4.41 46 DA-7 1.97 60 0 0 In C ,11 a0 U III Z o 0 W �W �� v Z r� U ZC:)+' M rn n rn W U .2 I W O _ W 0: rl d Cdb�' G"r 0 N `i o U O N 0 L) \ a1y c a ° 0 4 0 U Q '3 c E m K��7 T H?OA c T C .) o U y � BRIAN C. MIYCHELL 1 115 Lic, No, 035724 � 05/18/2022 P �FSSIONAL ENG\� 2 N c 0 c O U c 3 O q E, 0. 3 r y O N V rO` 0 ° C �+ nn o O CL w j 0 O � N c REVISIONS DATE ITEM w 05118122 PER COMMENTS o E N c 3 1° 0 �T 0 o_ 0 a DATE ° 01—z0_z SCALE c 1"=150' o 0 PROJECT MA7NA-G-E-R---`IIN0 BRIAN C. MITCHELL, .N DESIGNED BY v BCM / LEN r CHECKED BY -° c 0 PROJ.# c z0140065 3 0 SHEET # C - 11 r PERFORMANCE -BASED WATER QUALITY CALCULATION APPENDIX 5E PERFORMANCE -BASED WATER QUALITY CALCULATION APPENDIX 5D 3. Determine the pollutant load enteringthe proposed BMP(s) Worksheet 1 Worksheet 2 : Situation 2 Page 1 of 3 Page 1 of 4 Lamp = [0.05 + (0.009x IBMp)] x A x 2.28 (Equation 5-23) STEP 1 Determine the applicable area (A) and the post -developed impervious cover Summary of Situation 2 criteria : from calculations procedure STEP 1thru STEP 3, Worksheet 1: Where: LBMP = relative post -development total phosphorus load entering COUNTY OF ALBEMARLE (Ipost) proposed BMP (pounds peryear) Department of Community Development It Applicable area (A)* = 131.25 acres Applicable area (A)* = 131.25 acres Ipost = post -development percent impervious cover of BMP drainage area Post -development impervious cover: Ipost=(total post -development impervious cover/ A) x 100= 37% percent expressed in whole numbers) Construction Record Drawings (As -built) for VSMP Structures = acres A = Applicable area of proposed BMP (acres) parking lot = acres The area subject to the criteria may vary from localityto locality. Therefore, The following is a list of information required on construction record drawings for roadway = acres consult the locality for proper determination of this value. LBMp, = [0.05 + (0.009) x 26 )] x 41.48 x 2.28 stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the Other: Iwatershed = 16% = 26.859 Pounds peryear construction record drawing be prepared by someone other than the designer. Please do not = acres provide design drawings as construction record drawings. le„ht;ng=(total post -development impervious cover/A) x 10C 0% = acres LBMp2 = [0.05 + (0.009) x 6 )] x 3.85 x 2.28 Total = acres Iexsting oo/ < Imtershet 16% = 0.913 Pounds peryear A. A signed and dated professional seal of the preparing engineer or surveyor. Ipost 37% > Iwatershet 169/0 B. The name and address of the firm and individual preparing the drawings on the title sheet. Ip,,t = (total post -development impervious cover/ A) x 100 = 37% C. The constructed location of all items associated with each facility, and the inspection records to verify STEP 4 Determine the relative pre -development pollutant load (Lpre). Lgrap3 = [0.05 + (0.009) x 41 )] x 1.91 x 2.28 proper dimensions, materials and installation. The items include, but are not limited to the following: = 1.820 Pounds peryear 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. * The area subject to the criteria may vary from locality to locality. Therefore, 2. Video Pipe Inspection for any pipes which are not accessible or viewable. consult the locality for proper determination of this value. L 0.05+0.009xlwatersned)]xAx2.28 (Equations-16) prelwatershed) _ [ ( LBMPa = [0.05 + (0.009) x 46 )] x 4.41 x 2.28 3. Updated Location with geo-coordinates of all facilities. = 4.661 Pounds peryear 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. STEP 2 Determine the average land cover condition (Iwate,snea) or the existing Where(:watershed) = relative pre -development total phosphorus load (pounds per year) 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey impervious cover (Iexsting) Iwatershed = average land cover condition for specific watersh or locality or Lamps = [0.05 + (0.009) x 46 )] x 3.31 x 2.28 of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required the Chesapeake Bay default value of 161/o (percent expressed in for alterations from the design. gn• Average land cover condition whole numbers ) = 3.489 Pounds peryear 6. Plants, location and type. n.� A =Applicable area (acres) 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the lacove If the locality has determined land overconditions for individual watersheds within its LBMps = [0.05 + (0.009) x 46 )] x 4.41 x 2.28 installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), jurisdiction, use the watershed specific value determined by the locality as Iwatershed• = 4.661 Pounds peryear inlet and outlet protection, alignment and invert elevations compared to design. Lpre)watershed) = [0.05 + (0.009) x 16% )] x 131.25 x 2.28 8. Computations: For significant deviations from design, provide sealed computations verifying that Iwatershed = 160% = 58.055 Pounds peryear 4. Calculate the pollutant load removed by the proposed BMP(s): 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 Worksheet 2 : Situation 2 sections and linings. Worksheet 1 Page 1 of 4 Lremoved = EffgMp X LgMp (Equation 5-24) 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage Page 2 of 3 must be within platted easements. Provide copies of recorded documents. STEP 5 Determine the relative post -development pollutant load (Lpost). Where: Lremoved = Post -development pollutant load removed by proposed BMP 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety Existing impervious cover (I.,,;«w): (pounds peryear) provisions; fences, guardrail, including the type, length and applied end treatments, compared to Determine the existing impervious cover ofethdevelopmentsiteifpresent. Lpost = [0.05+(0.009x Iwatershea)1 x A x 2.28 (Equation 5-16) Eff BMP = ollutatn removal efficiency of BMP (expressed in decimal form p ( p ) design. 12. Material layers - biofilter media stone layers, sand layers, keyways and cores must be verified as to Y r Y Y t Existing impervious cover: LBMP = relative post-devlopment total phosphorus load entering material types and depths. Include inspection reports, boring or test pit reports and materials Structures = Where: Lpost = relativepost-development total phosphorus load (pounds peryear) proposed BMP (pounds peryear) certifications. Biofilter media must be an approved state mix. acres lot = acres Ipost = post -development percent impervious cover (expressed in 13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. parking roadway = acres whole numbers) Lremoved/BMP3 = 65 x 26.859 = 17.458 pounds peryear 14. Compaction reports are required to verify fill compaction in dams. p p0 req Y P 15. Manufacturers certifications for proprietary BMP s certifying proper installation and functioning. other: A =Applicable area (acres) = acres Lremoved/BMP2 = 50 x 0.913 = 0.456 pounds peryear = acres Lpost = [0.05 + (0.009) x 37% )] x 131.25 x 2.28 Total = acres = 114.742 Pounds peryear Lremoved/BMP3 = 65 x 1.820 = 1.183 pounds peryear lexist;ng=(total post -development impervious cover/ A) x 101 Oo/ STEP 6 Determine the relative poluutant removal requirement (RR). Lr emoved/BMP4 = 50 x 4.661 = 2.330 pounds er P peryear ear * The area should be the same as used in STEP 1. RR = Lpost - Lpre(watershed) Lremoved/BMPS = _ SO x 3.489 - 1.744 pounds peryear RR = 114.742 - 58.055 STEP 3 Determine the appropriate situation. = 56.688 Pounds peryear Lremoved/BM136 - SO X 4.661 - 2.330 pounds peryear The site informtaion determined in STEP land STEP 2 provide enough information to STEP 7 Identify best management practice (BMP) for the site. determine the appropriate development situation under which the performance criteria will 5. Calculate the total pollutant load removed by the BMP(s): apply. Check () the appropriate development situation as follows: 1. Determine the required pollutant removal efficiency forthe site: Lremoved/total =Lremoved/BMP3 +Lremoved/BMP2 +Lremoved/BMP3 +Lremoved/BMP4 EFF = ( RR/ Lp,,t) x 100 Situation 1: This consists of land development where the existing percent impervious Lremoved/toml = 17.46 + 0.46 + 1.18 + 2.33 cover (I is lessthan orequal tothe average land covercondition existing) � g Where: EFF = required pollutant removal efficient ercentexpressed in whole q P Y (p + 1.74 + 2.33 (Iwatershed) and the proposed improvements will create a total percent numbers) = 25.50 Pounds peryear impervious cover (Ippst) which is less than or equal to the average land RR = pollutant removal requirement (pounds peryear) Lpost = relative post -development total phosphorus load (pounds per cover condition( Iwatershed 6. Verify compliance: year) Ippst Iwatershed EFF = 56.688 / ###### x 100 Lremoved/total RR Worksheet 1 25.50 < 56.69 Page 3 of 3 2. Select BMP (s) from Table 5-15 and locate on the site: X Situation 2: This consists of land development where the existing percent impervious BMP 1: cover (lexlsting) is less than or equal to the average land cover condition BMP 2: (I and the proposed improvements will create a total percent BMP 3: watershed) P P P BMP 4: impervious cover (Ip.J which is greaterthan the average land cover BMP 5 condition (Iwatershed)- Iexsting 000 < Iw tershed 16% Ip.t 37% > Iwatershea 16% Situation 3: This consists of land development where the existing percent impervious cover (lexisting) is greaterthan the average land covercondition (Iwatershed) Iexsting Imtershed Situation 4: This consists of land development where the existing percent impervious cover (lexlsting) is served by an existing stormwater management BMP is) that addresses water quality If the proposed development meets the criteria for development Situation 1, than the low density development is considered to be the BMP and no pollutant removal is required. The calculation procedure for Situation 1 stops here. If the proposed development meets the criteria for development Situations 2, 3 or4, then proceed to STEP 4 on the appropriate worsheet. Water Quality Volume Calculations: Vwq (ft)= Impervious area (fe) x 0.5 (in) / 12 (in./ft Vwq (ac.ft.) = Vwq (ft3) / 43560 ft2/ac. SWM/BMPl: Drainage Area= 41.48 acres Impervious= 26 % = 10.7848 acres Vwq (ft3) = 19,574 ft3 Required 4x Vwq = 78,298 ft3 Provided WQvolume = 101,646 ft3 SWM/BMP2 : Drainage Area 3.85 acres Impervious = 6 % = 0.231 acres Vwq (ft3) = 839 ft3 treatment volume 0.5" of runoff from impervious arei Provided WQvolume = 4,929 ft3 AREAS SLIMMARYTABLE: ONSITE OFFSITE (NOTADI SITE AREA) NO. ACRES IMP. % BYPASS 1 1.74 30 BYPASS 2 0.84 26 BYPASS 3 1.40 27 BYPASS 4 9.52 28 BYPASS 5 41.48 26 DA-1 22.13 43 DA-1A 3.85 6 DA-2 1.91 41 DA-3 40.31 53 DA-4 1.54 39 DA-5 3.31 46 DA-6 4.41 46 DA-7 1.97 60 )EDTO APPLICABLE APPLICABLE SITE AREA= 131.25ACRES Ipost = 37% O O to CQ ,11 a0 O �J 11d4 U Z 10Z OHO W 0�� CLU �� v Z14 hl) r� U W a .� a W O co O c L cad .b O N N O O 0 \ ,1y c a° 0 �Ilii Q '3 E m K��7 T H?OA c T Q O U y BRIAN C. MIYCHELL 1 11 o Lic, No, 035724 0511812022 �FSSIONAL ENG\� 2 ia- c 0 m c 0 U C w t^ 3 ) L t_ 4) 0 "4 O 0 T a 0 lye l�l ti .0 o o 0 CL O � � r� c d REVISIONS DATE ITEM w 05118122 PER COMMENTS ;; in c 3 1.2 0 �T C a 0 a DATE r 01-zo-zozz m SCALE C NO SCALE o PROJECT MANAGER m BRIAN C. MITCHELL, P.E. c .m v DESIGNED BY BCM / LEN r CHECKED BY a c 0 PROJ.# c .3 20140065 0 SHEET # C - 11A 1 ��IiOTTOJrYELL16, A67.110, j PVC I C S I� / I I I ENE 2EDI J0 / \,' MENNEN a- MEMEME no M ME ME ME 51 VON Z 0 0 0 SIMMEMEMEME FORMEMEMEMEN ' / /1/ i / l=t:'J,21V1T71'I yjrP yaL3vy7 ' i Ii /' i ,' �'� ' i i i / i �♦�i��� l �/ llIllllllllll//llllll Ilii iii i / i l ll llll ,lIl llll ll l � i / � � / l l l��l�l�lllllllll�lll /Iliil/li i i ' i'' / III l llllll/Il/llllll I l� , i i' i i'�__ /11// I ll Ill, Illll 111 lllll ll -J �, , i i , II/ll llllll llllll,,,/ ' � ii ,:i��N lllll ll/Ill llI lllll l l l l L l l l l 4 j lll// llY/ll 1 -,,yam` � -•��\�\\.� -.� • Mulch Layer • The mulch shall be uniformly applied approximately 2 to 3 inches in depth on top of planting soil. • An acceptable mulch layer shall include shredded hardwood or shredded wood clips or similar product. • Of the approved mulch products all must be well aged, uniform in color, and free of foreign material including plant material. • Mulch shall be free of weed seeds, soil, roots, grass or any other substance not consisting of either bole or branch wood or bark. NOTES: 1. SOIL EVALUATION MUST BE VERIFIED BY A QUALIFIED PROFESSIONAL FOR COMPOSITION, PLACEMENT AND DEPTH PER THE PLANTING SOIL MEDIA GUIDELINES AS PRESENTED ON THIS SHEET. 2. RAIN GARDEN CONSTRUCTION SHALL NOT COMMENCE UNTIL THE SITE IS FULLY STABILIZED AND ALL EC MEASURES HAVE BEEN APPROVED FOR REMOVAL. 3. ALL GRASSED SWALES AND SURROUNDING GRASSED AREAS SHALL BE FULLY STABILIZED AND THE RAIN GARDEN EMBANKMENTS SHALL BE SODDED PRIOR TO PLACING THE RAIN GARDEN IN TO OPERATION 4. A MINIMUM OF 3 SOIL BORING LOGS PER BASIN SHALL BE PROVIDED TO EVALUATE SOIL SUITABILITY FOR THE PROPOSED RAIN GARDENS AND TO ENSURE THAT THE SEASONAL HIGH WATER IS AT LEAST 3 FEET BELOW THE FILTER BED PRIOR TO INSTALLATION OF EACH RAIN GARDEN. 5. A DENSE COVER OF WATER —TOLERANT, EROSION —RESISTANT GRASS OR OTHER VEGETATION MUST BE ESTABLISHED. RECOMMENDED GRASSES INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING: KENTUCKY-31 TALL FESCUE, REED CANARY GRASS, REDTOP, AND ROUGH —STALKED BLUE GRASS, NOTE THAT THESE GRASSES CAN BE MIXED. 6. MONKEY GRASS SHALL BE PLANTED OVER MULCH LAYER TO STABILIZE THE MULCH. 7. THE ENVIRONMENTAL ENGINEERING INSPECTOR WILL BE NOTIFIED WHEN THE INITIAL GRADING IS COMPLETE AND THE UNSUITABLE EXISTING SOIL HAS BEEN EXCAVATED PRIOR TO INSTALLATION OF THE UNDERDRAIN SYSTEM. 8. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE UNTIL ONE YEAR AFTER STATE ACCEPTANCE. EXISTING GROUND I I 12" MAX PONDING DEPTH TOP <--o.ox PROPOSED GRADE ::."!. LwR 3' MULCH \ 3:1 MAX •+ PLANTING SOIL 2.5' SOIL MEDIA • MULCH TO BE SHREDDED AS N07E0 HARWOOD OR HARDWOOD CHIPS a e e 3- PEA GRAVEL - THE RECOMMENDED GRAVELO BIORETENTION SOIL MIXTURE IS 12' WASHED GRAVEL GENERALLY CLASSIFIED AS LOAMY MIN SAND ON THE USDA TEXTURE TRIANGLE. NTH THE FOLLOWING 6' PERFORATED HOPE TO COMPOSITION PER THE VA DEO DAYLIGHT O IS 1/2' - 2' STORMWATER DESIGN WRAPPED IN FILTER FABRIC WASHED SPECIFICATIONS NO.9 GRAVEL SAND -8%TO 1� SOILAND MODIFIED DETAIL FOR -3% TO 59 ORGANIC MATTER BIORETENTION AREA X—SECTION BMP 5 (NOT TO SCALE) EXISTING 2' MAX. PONDING DEPTH PROPOSED GRADE-/ ' . : 3- MULCH 3:1MAX NG -p--"L ��7�y 2.5' SOIL MEDIA • MULCH TO BE SHREDDED AS N HARWOOD OR HARDWOOD CHIPS 3' PEA GRAVEL •• THE RECORECOMMENDED BIORETENTION SOIL MIXTURE IS O -�AVELO 12' WASHED GRAVEL GENERALLY CLASSIFIED AS LOAMYMIN SAND ON THE USDA TEA1URE TRIANGLE, WITH THE FOLLOWING 6' PERFORATED HDPE TO COMPOSITION PER THE VA DEO DAYLIGHT O 1% 1/2' - 2' STORMWATER DESIGN WRAPPED IN FILTER FABRIC WASHED SPECIFICATIONS NO.9 GRAVEL -85X To Salt SAND -8x TO 12X SOIL FINES; AND MODIFIED DETAIL FOR -3x TO 5a ORGANIC MATTER BIORETENTION AREA X—SECTION BMP 6 (NOT TO SCALE) Bioretention Basin Adjacent to a Drainage Swale BIORETENTION AREA LIMIT A FLOW IILOW CONCRETE CHECK DAM 3:1 MAX. (TYP•)-7 15' FLOW =010. 4 PLAN VIEW (NOT TO SCALE) Proposed Glrad Imo---- BIORETENTION AREA MAX. PONDED WATER DEPTH (9 INCHES) SECTION A —A' (NOT TO SCALE) it-5.DWG BERM SWALE NOTES: 1. PLANTING SOILS SHALL BE PLACED IN MAXIMUM 12" OR LESS LAYERS AND SHALL BE LIGHTLY COMPACTED. BIORETENTION AREA PLANTING SPECIFICATIONS 1. ROOT STOCK OF THE PLANT MATERIAL SHALL BE KEPT MOIST DURING TRANSPORT FROM THE SOURCE TO THE JOB SITE AND UNTIL PLANTED 2. WALLS OF PLANTING PIT SHALL BE DUG SO THAT THEY ARE VERTICAL 3. THE DIAMETER OF THE PLANTING PIT MUST BE A MINIMUM OF SIX INCHES (6") LARGER THAN THE DIAMETER OF THE BALL OF THE TREE 4. THE PLANTING SHALL BE DEEP ENOUGH TO ALLOW 1/8 OF THE OVERALL DIMENSION OF THE ROOT BALL TO BE ABOVE GRADE. LOOSE SOIL AT THE BOTTOM OF THE PIT SHALL BE TAMPED BY HAND. 5. THE PLANT SHALL BE REMOVED FROM THE CONTAINER AND PLACED IN THE PLANTING PIT BY LIFTING AND CARRYING THE PLANT BY ITS' BALL NEVER LIFT BY BRANCHES OR TRUNK) 6. SET THE PLANT STRAIGHT AND IN THE CENTER OF THE PIT SO THAT APPROXIMATELY 1/8 OF THE DIAMETER OF THE ROOT BALL IS ABOVE THE FINAL GRADE. 7. MAKE SURE PLANT REMAINS STRAIGHT DURING BACKFILLING PROCEDURE. 8. NEVER COVER THE TOP OF THE BALL WITH SOIL. MOUND SOIL AROUND THE EXPOSED BALL. 9. TREES SHALL BE BRACED BY USING 2" BY 2" WHITE OAK STAKES. STAKES SHALL BE PLACED PARALLEL TO WALWAYS AND BUILDINGS. STAKES ARE TO BE EQUALLY SPACED ON THE OUTSIDE OF THE TREE BALL. UTILIZING HOSE AND WIRE THE TREE IS BRACED TO THE STAKES. 10. BECAUSE OF THE HIGH LEVELS OF NUTRIENTS IN STORMWATER RUNOFF TO BE TREATED, BIORETENTION BASIN PLANTS SHOULD NOT REQUIRE CHEMICAL FERTILIZATION PLANTING DATE GUIDELINES BALLED AND BURLAPPED AND CONTAINERIZED TREES AND SHRUBS SHOULD BE PLANTED BETWEEN MARCH 15 AND JUNE 30 OR BETWEEN SEPTEMBER 15 AND NOVEMBER 15. GROUND COVER EXCLUDING GRASSES AND LEGUMES CAN FOLLOW THE TREE AND SHRUB PLANTING DATES. GRASSES AND LEGUMES TYPICALLY SHOULD BE PLANTED IN THE SPRING OF THE YEAR. Maintenance/Inspection Guidelines The following maintenance and inspection guidelines are not intended to be all inclusive. Specific Facilities may require additional measures not discussed here. A schedule ofrecommended maintenance for bioretention areas is given in Table 3.11-5. The table gives general guidance regarding methods, frequency, and time of year for maintenance. Planting Soil Urban plant communities tend to become very acidic due to precipitation as well as the influences of storm water runoff. For this reason, it is recommended that the application of alkaline, such as limestone, be considered once to twice a year. Testing ofthe pH ofthe organic layer and soil, should precede the limestone application to determine the amount of limestone required. Soil testing should be conducted annually so that the accumulation of toxins and heavy metals can be detected or prevented. Over a period of time, heavy metals and other toxic substances will tend to accumulate in the soil and the plants. Data from other environs such as forest buffers and grass swales suggest accumulation of toxins and heavy metals within five years of installation. However, there is no methodology to estimate the level oftoxic materials in the bioretention areas since runoff, soil, and plant characteristics will vary from site to site. As tDetoxicsubstancesaccumulate,theplantbiologicfunctionsmaybecomeimpaired,andtheplant rhay experience dwarfed growth followed by mortality. The biota within the soil can also become void and the nabual soil chemistry may be altered. The preventative measures would include the removal ofthe contaminated soil. In some cases, removal and disposal ofthe entire soil base as well as the plant material may be required. Mulch Bioretention areas should be mulched once the planting of trees and shrubs has occurred. Any ground cover specified as plugs may be installed once the area has been mulched. Ground cover established by seeding and\or consisting of grass should not be covered with mulch. GRAPHIC SCALE 20 0 10 20 40 ( IN FEET ) 1 inch = 20 ft. LEGEND FINISHED GRADE A C/L — — — — — — — — — EXIST. GROUND AT C/L SCALE: HORIZONTAL: 9 " = 50' VERTICAL: > " = 5' O O U7 C ,11 a0 O �J Z � � U � Ul U '�� W �W ��v _ U Z O � M o W �.0 � W RD Otll W O A� N _ ado ° -1 00 � N CN o U O N O � •1y a c ° \ 0 Q 3 c RD E tT K��7 T H?OA c T p O U y BRIAN C. MIYCHELL 1 11 o Lic, No, 035724 v N 0511812022 �FSSIONAL ENOxt' a- im w C N W C O U C w L I o •� � V W 3 O l Q4lT� I� 10 1 Cam, O O V � r `o C c C)- IO O U 0 0 rv� U O = W 0 C REVISIONS DATE ITEM w 05118122 PER COMMENTS RD to m RD c 3 H 0 �T N CL 0 O a DATE r 01-20-2022 1' N SCALE C AS SHOWN o r PROJECT MANAGER 0' BRIAN C. MITCHELL, P.E. C N v DESIGNED BY BCM / LEN r CHECKED BY ° c 0 PROJ.# c .3 20140065 0 SHEET # � C - 12 PRUNE ALL BROKEN, DEAD AND DAMAGED BRANCHES. —jfYA e DO NO CUT LEADER F4 l� Z'S[T Y' MIN. WEBBING x 12"MIN. THREAD CABLE THROUGH METAL WIRE OUY l `-� GROMMETS ~ / L TURNBUCKLE \ WRAP WITH COMMERCIAL CREPE TO 1 _ SECOND BRANCH. START AT BOTTOM 1]0' � 6-1/3" GALVANIZED TURNBUCKLE J,/• r\ ~ ~ 13 GA. GALVANIZED GUYWIRE rf{J rjJ - METAL 'LAG - PAINTED OR WHITE ♦5 45-30- *�` — S" EARTH MOUND TO CREATE SAUCER —II f S" MIN. SHREDDED PINEBARK MULCH LI •�ryl - LI '.Si 13 S/ '� VI II REMOVE BURLAP FROM TOP 1/3 OF BALL 30 4—1-f'kf'k50" STAKES. SALT PRESSURE MIN II 1'ti� • TREATED PINE"DRIVE FLUSH WITH GRADE a•• L 5� Yr 6 — PREPARED TOPSOIL BICKFILL B'J"MIN SCARIFY BOTTOM OF PIT TREE GUYING DETAIL - 3" CALIPER OR MORE 4 \zY NOTTO SCALE 3" EARTH MOUNDED TO FORM SAUCER - 1- SHREDDED L PINEBARK MULCH 3-- 4" PINEBARK MULCH REMOVE BURLAP FROM TOP �I Y j I III�J,—III III i } III 1 3 OF BALL PREPARED TOPSOIL BACKFILL 1 6•• •- -I11 —'Ill MIN •i SCARIFY BOTTOM OF PIT B & B SHRUB / GROUNDCOVER BED NOT TO SCALE BALLED AND BURLAPPED AND CONTAINERIZED TREES AND SHRUBS SHOULD BE PLANTED BETWEEN MARCH 15 AND JUNE 30 OR BETWEEN SEPTEMBER 15 AND NOVEMBER 15. GROUND COVER EXCLUDING GRASSES AND LEGUMES CAN FOLLOW THE TREE AND SHRUB PLANTING DATE. GRASSES AND LEGUMES TYPICALLY SHOULD BE PLANTED IN THE SPRING OF THE YEAR. Table 9.7. Suggested Annual Maintenance Activities for Bioretention Maintenance Tasks Frequency • Mowing of grass filter strips and bioretention turf cover At least 4 times a year • e air, trash removal, and mulch raking Spot weeding, erosion repair ' Twice during growing season • Add reinforcement planting to maintain desired the vegetation density As needed • Remove invasive plants using recommended control methods • Stabilize the contributing drainage area to prevent erosion • Spring inspection and cleanup • Supplement mulch to maintain a 3 inch layer Annually • Prune trees and shrubs • Remove sediment in re -treatment cells and inflow points Once every 2 to 3 years • Replace the mulch layer Every 3 years BMP 5 FA flV7lC' / BIORETENTION FILTER 5 PLANT SCHEDULE SYMBOL TOTAZE OUANL BOTANICAL NAME COMMON NAME HEIGHT SPACING ® 11 Taxodium distichum Bald Cypress 6-7' 15' O.C. O2 Magnolia Virginiana Sweetbay Magnolia 6-7* 15' O.C. 12 Itea Virginica 'Henry's Garnett' Sweetspire 3gal' 4' O.C. 16 Corpus Sericea 'Arctic Fire Red Twig Dogwood 3gal. 4' O.C. O 12 Myrcia Cerifera Woxmyrtle 3gal. 6' O.C. BMP 6 p i iiii i iii i i i i i/ i i i // i i l -r• --1�:1 "'1 (� I I \ \`\ \�` ��L1 - 1 l i i � i i j i � i i i / � � l l l � / . ". ��' I. • 1 \ \\ � ^ \ \ � ��'---_____ ��- l/'`---- fl 4 k, l / 1," 1 1 _ I I I l l000 f------ i "----------- -- - - - - - - - - - - ---------------- I I I 1 I I I \ \ �� ♦� \ _ \ —// BIORETENTION FILTER 6 PLANT SCHEDULE SYMBOL WAN BOTANICAL NAME COMMON NAME SIZE HEIGHT SPACING ® 4 Taxodium distichum Bald Cypress 6-7' 15, O.C. O2 Magnolia Virginiana Sweetbay Magnolia 6-7, 15' O.C. 7 Itea Virginica 'Henry's Garnett' Sweetspire 3gal. 4' O.C. 10 Cornus Sericea 'Arctic Fire Red Twig Dogwood 3gal. 4' O.C. 12 Myrcia Cerifera Waxmyrtle 3gal. 6' O.C. O 0,^ Yo CQ ,11 a0 O �J Z U T�I y i�•� 0 0 L �� W �W �� v Z _ U O � d W W4I co Q W O F/ t N ado T -1 N N O O O N L) O y. a 0 \ I / Q 3 d E m K��7 T H?OA c C p O U y � BRIAN C. MIYCHELL 1 11 o Lic, No, 035724 0511812022 �FSSIONAL ENG\� 2 ia- y. C G1 W C O U c 3 .L. ~ q V 3. h q 0 0 �Q) ti 11:�N 0 0 c o �wCL Ov1 ` c REVISIONS m DATE ITEM w 05118122 PER COMMENTS ;; in Ol 0 c 3 0 N- 0 �T CL G1 0 O a DATE 4)01-20-2022 N SCALE C AS SHOWN o r PROJECT MANAGER G BRIAN C. MITCHELL, P.E. c .N DESIGNED BY v BCM / LEN r CHECKED BY a c 0 PROJ.# c 20140065 .3 0 SHEET # C-12A r O O CQ PURPOSE VEHICLE FUELING AND MAINTENANCE DISCHARGES FROM CONCRETE'rRELAfEd DISCHARGES OF SOAPS, DETERGENTS, SOLVENTS, AND SWPPP UPDATES I WASH ACTIVITIES WASH WATER FROM CONSTRUCTION ACTIVITIES SUCH AS O C 9VAC25-870.54 of the Virginia Stormwater Management Program (VSMP) Permit ✓ Conduct regular maintenance in a dedicated area that is located to maximize the The operator(s) shall update the SWPPP to include: Nt U CLEANUP OF STUCCO, PAINT, FORM RELEASE OILS, AND O Regulations requires that Stormwater Pollution Prevention Plan (SWPPP) be developed distance from storm drain inlets, ditches, waterbodies or wetlands but no less than ✓ Concrete trucks are not allowed to wash out or discharge surplus concrete or drum i (n O for all regulated land disturbing activities. The SWPPP must include, but not be limited 50 feet from those features. 9 P CURING COMPOUNDS ✓ A record of dates when 1) major grading activities occur, 2) construction activities 9 9 wash water on site except in a dedicated area(s) that is located to prevent to, an approved erosion and sediment control Ian, an approved stormwater temporarily or permanently cease on a portion of the site, and 3) stabilization .--I PP P PP ✓ If fueling is conducted at a dedicated aria¢; the flotation must be located to discharge to storm drain inlets, ditches, waterbodies or wetlands but no less than 50 management Ian, and this Pollution Prevention Plan PPP for regulated land ✓ Washing activities associated with construction activities other than vehicle and measures are initiated; A' Q . 4 9 P (PPP) 9 maximize the distance from storm drain inlets, ditches, waterbodies or wetlands but feet from those features. I 1 O 0 equipment washin p p g ✓ Documentation of modifications and revisions to the SWPPP; LL disturbing activities, and a description of any additional control measures necessary to no less than 50 feet from those features. g, such as clean u of stucco, paint, form release oils, and curio l� C ✓ Each facility must have a stabilized access to prevenTmud tracking into the street. compounds are to be conducted in a dedicated area. ✓ Areas that have reached final stabilization where no further SWPPP or inspection •� (� address a TMDL as applicable. ) I I �+� ✓ The dedicated areas must be designed to eliminate the discharge of spilled and ✓ -- _ ✓ ✓ requirements apply, L1J V Each facility must have appropriate signage to informuserswhere the dedicated The dedicated area must be located to maximize the distance from stone drain leaked fuels and chemicals from vehicle fueling and maintenance activities by --- All properties that are no longer under the legal control of the operator and the dates L� • • U The plan for implementing pollution prevention measures during construction activities areas) are located. inlets, ditches, waterbodies or wetlands but no less than 50 feet from those features. •� ,� developed on this sheet must be implemented and updated as necessary. An PPP providing secondary containment (spill berms, decks, spill containment pallets, Separations of less than 50 feet may be approved b the Environmental Inspector. on which the operator no longer had legal control over each property; and W P P P ry" Y Y PP Y P Shownon ✓ X4 providing cover where appropriate, and having spill kits readily available). The date, volume, and corrective/preventative actions implemented for any requirements not included on this sheet must be incorporated into the SWPPP required ✓ by 9VAC25-870-54 that must be developed before land disturbance commences. This ✓ Each facility must have appropriate si na a to inform users where the dedicated Date Plan Location of Dedicated Areas) The dedicated areas must be designed to prevent the discharge of soaps, prohibited discharge. ,� •~ �+ P9 9 Sheet # s detergents, solvents, and wash water. Z U � PPP identifies potential sources of pollutants that may reasonable be expected to affect area(s) are located. the quality stormwater discharges from the construction site both on- and off -site Approved The operator(s) shall update the SWPPP no later than seven (7) days following any of f-r •r-4 o, q ty g ( Plan Shown on .--1 , , � the situations identified above. activities) and describes control measures that will be used to minimize pollutants in Shown on �' �• ' _� _ „_ Date Plan Location(s) of Dedicated Area(s) Q stormwater discharges from the construction site. REWIS10N870 LOC'kTIY)NS Sheet # s +> 4) -. -_._ �_ ;Sheets . 4acatibn f Dediedt $�Yrea(s) rApprovN� OPERATOR�iNSPE(iTION. , O .,� c Date OTHER REF"ERENCED PLANS -Approved - O Shown our' r Operator's �Plag Thi�operator(sjjideritified Ibelow_shell iprdviderfoorispecfro s'orAh _pe land- tl) •� I w Imp --� Date: Plan L'ocatiori of Dedicated Arrea s I I I Ian Jh�,# g �) Initials R�ORS TO LOCATON `disturbing, activities by the qualfied.personnefi identfied,below, ;The inspections;willlbe W CO d SWPPP,rrequUemeMs{may t��lledJGy:incorporatingby,refefence';oUiar7plans:(Alf. r- REVISIONS;TOLOCATIONS` ,Shownon (conducted(select'onethe;followngoptions): plans_j,inoorporated lby "reference Ilbecome 4enforceable ;under ]the 1VSMP (Perini! _ _ Operator(sy) _ - - - - l aDete J eiart_ Ldc�etioh s>"of nie>itoa"itirai s III Regulations hand 'General 'Permit incVAR10 {for. Discharges-fof jStormwater Ifram- (Shownon �Heet # s ( Initials_ _ ❑ at least once every four (4) business days; or 0t�+.t , .4 Construction ;Activities If ;a plam'orporated !by deference (does not contain all of the Date -' Flan_ ;Location of Deallcated%Irea(s); bperato� ❑ at least once every five (5) business days and no later than 48 hours following 0 . i ^ % 3 required demerits. pfJ, the- PPP'dhe,'operatCr must develop jthe ;missing elements end Wit; s ;l -Initials any measurable storm event. ' LZ include them in-the,SWP,PP,. r TT I-----.... _ r:: ,._,..::,. _.,r;.__ _._. ,. 1, s__, !�+ c4 ✓ ,Facrlitiesmusf berdeaned•tori,new faahties,consWcted, (once the,wasFiout area,is; tlVhere,areas are;in a stabikzed tondibom 0r runoff is unlikely due to vnnterwnditions, . 4 � Ly o r I'Mepanderiit Plans Date two thirds (2/3) full., the)imspecrion frequencymay;;be reduced to omce every 30 days while these cortdrtions�'i cv fncorporatedby'Reference Approved bah he''operator(s) shaft lresume'ltLie regular inspected Frequency � O 9 T - 'identified' JStorinwater Maria anent"Plans (Regiona`I or Master)- -I _, _ - :. .. , :: r �- , ., . ,, _� p z.i exist. erwise; t c� atiove. mobile _ -_. ___.: __ - __- _ r✓The dedisatedama;mustbe iavereid (e.., (Plastic sheating, temporary roof,_etc. C r ,, -__ -_ _... ,-,_-, „_. ,_-_- J r? !If fueling -mill ��will.'be us€d the luelm ,must.:be.done rn pan larea.;that:'liioated to - - - - ":,- , - _ 9.. _.... Theme erator s-shalb rowde foams -shoos of the! rmitted'-land,disturbin activity -to 9 - .g,-: --£ .. - - reventeontad`wth stormwater: op O _ . P Pe . _ Pe _ -__ 9 tY Spill Prevetiticn,:Crontml, fond Countermeasure,Pla6S - - maximrze thedistanee from Istormtdrain Iinletssditcheswaterbodies-or wetlands Cbu/ ® R tADE OiONCrRETE � 64FfEA P - _ _ , [ensure i lementati0n ierTd continued rr�iaidtenance of ''all ufrerr�ents 'of -te i✓ The dontaminoted lwasiewater'from' the r.dedidated rea (must de `collected'sfor - — ... - -J., - ,. - -- a u Off S fe Stock ale no less,iHari' SO feet'fr'om`those featires: „ r „ a Stormwater,Pollution lPrevenbon Plan l EmoiWft,and,Se-drment Control Plan,lStormwater o p f F- _—_ _�_,_T.__ disposal by,a waste hauler or discharged to thesanitary sewer. Management P,lan;, Pollution: Prevemion!plan„TMl)t requirmeiits, etc:);, i% S - II k must be read- g I (I _ Off=Site"BonOWAfea Pi ty,avadable,atall mobilefuelm locations: _ - � � - � -' - � .; . ,-- _ �n situations where the J� o'ns otherthan; o ♦ _ - I se Ilutannereiorcould,be "ene,Wishinbceti, :.,___- -._-:--.-_.__._--�- Th nfAifi_-'And _c IV [On3ite storage tanks -must hava�lmeans afisaoondary_.�ntdmmant(spol harms,- �, at!the rdesigneted area'(e g., concrete pours,:buAdmg washing, etc:); over:(e;g;; Records of,the re cared 6ns coons (must fbe maintained andJincludeddm the_SWPPP � flecks,spolcontammeiiYpallets,etc;) -an tllmusthe coveTedTvh�;a�propriate lacticsheeting,,temporary,roof-etc:' must -lie`' rovided.aa prevent `"' q :" -r ri - r , -_ _ - P )r p P binder. (The guahfied .personnel are'encouraged to;,usetire Operatonlnapection form 0 .AIL vehicles n SAE .must" be mon8ored r teaks i oil' receive f lar p reventive' stormwater,and the contarninated!wastewaterfrom the activity must be,collected for { 'des in e3W n moment the re aired ins ed ofis `ems edions ere atntenamce to.reduce chance"of leakage. a raga P 'disposal by,e waste hauler or discharged to the c d ' . q p � p sanitary sewer. Ilcontluoted once,ievery five (5)',business"days and rid=laterthan48hours following any 0 I imeasureabjestorm event„they Ideation ofthe}rain gauge used to determirrethe amount = 10` MIN. of rain must beincluded in the' SWPPP and documenteiJ in the inspection report (POT€NTIAfL-TPP=1WITANJT SOURCES bISCHARGE (FROM:-STORA'GE,'HANiDLING, i4NO DISPOSAL ©MIN OECONSRRUCTIONjPRODUCTS. MATERIALS. AND-WASTt ai the foutwing sources rdf po`tentia'1 pollatats must be addressed in the [Pollution ICNOWLEDGEMENT Y - P -v-- -- - - - -- - ✓ -.._ DISCHARGES"OF HAZARDOUS. TOXIC:nn Prevention Jam. Venous c0mtrcls amd/or measures designed (to prevent ,antlYor Storage of_construction,products�.,matenals�land waste _js ;to oe�fFonduded ,.in , •3 (minimize pbII_UAanls in stormwater discharges from the project site -must be applied to idedicatedeiv", :AND!SANIITARY WASTE( i:e`r; r- - - -- ---- ' - Q r_ found -' -. , - .,,.-- " g .. � [. - _,._ the -_ "- -' controls � - _ •-� _ . T_.�_.._- ____.. -__ ____,_ ___ - .__ __., _._ , _..._ - � _-.._. A 1 tertfiy under �en�o jf law that �e'quaT�ed-personn�ent�etl mow' *a sources -found 0n the site Additional (information concerning the following ✓jThe dedl iad!are; mustb6 fldealod'tofmaximize then dFinance`,fromjstorm drain-- d andior measures may be found inthe WiP;PP. Deviations from the Jocation cnnena r J. _ , . , , " ,1 r_.,, _ v - on � E -- , - inlets ditches, rwaterbodies or;wetiands but rioJless than 5(Y feet from those features ✓Store a anddis sal bf:hazardous,;toxic and samta :wastes ale to be,conducted fn a, has tieen;desi noted b ahe Operator fa Conduct 6ns dions:of the a;)rrbeappo5edrbyltheCountyrslEmyuammen IlF�rrgtm Engineering Inspector, ;SeparationsoflessYharr',SOfeetmay'be"approvedibythe,EnvironnientalInspector dedicetedarea ry parmitted"sd y ✓Thededicated areas must be designed to rriimm¢e the discharge of pollutants from ! r✓ aThpdedicated areii-eyi t, be -located twrnaximize the_ isIs from js£ortri(dram b. Gs fknowledgea6le imtherpnnciples and ipradtces; roson'and F pLT H 0 w - r ti C r s;, storage, Handling, Jand disposel,of construction roduds,;matenalssrid -,wastes mlets,'ditcFes;rwaterbdtlies or wetlands but ' less than SOifeet-from those features: setlifinent r ntrol' and stormwater mana�t - _ - LEAKS:-SP-ILL6- N THER,RELEASES_ P . „ f F n s 1 lading"(I)]tiullding�!prtiducls such as asphalt seglants, cdppI -flashing,-roofing Separoboes-f,lessthan-50feetmaybeapprovad`bytheEnvironmentahlnspectort c rossLssestheskilis,fi)assessCondihorisat.thapetmittBdSiteftSfthe` > - materials -adhesives, concrete-�Mu s;. t-tides-"harbicides,ansecdcides - -. ___ f ,_;- r - _- - __ _ .__.T- --.. -_ .. , r_ :.-_ --� !, O. P� - ✓,The -dedicated areas des Ned to -event-the dischar of;hezardous toxic 01penator(s) that could impact stormwater quality and quantity; p o .The.::o er tor(s) shall ensure procedures.,are /rS-la ;to yentland.:res rid-{D ell: : -.'.. � ... _ .-� "_ - ._ .. 1�: - f --. _t._ �. , r..,... ,, p-,. P ? yfertihzers; land landscape satinets; and (ui) construction and domestic ruastes such jai os c amd " nrta waste b >avoidin contact with reci station" d. � assess_the;effeotweness`ofan erosion;and`sediment control v jlea'ks s el§end other, releases -of" ollutants- --"--'_- - r.�. ---- - ru ..lf ma materials -- -` .- -- 18 _ s•r.,. ,l•'?_ . ry , --, Y. 9 �,.. „� ,:. ,p p, -..-.. .. y. ,.,_ v P as packaging,rnatenals scrp;co�isUuction materials, masonry rproduots„timber, r c __. - -- r___,J..,T _.__ -- _ -__ ._,.. measures or toM1Wa(eCrran ermenifaclhUesseledted-t6 n t-the _ ... ... ,,,,. _ _. _ : Eaon, acilit (must Movie ro Nate s na -To in o�sers where Wd dedIC4 ed a BRIAN C. MI CHELL o ,The o erator s.!shall ensure':elf}leaks;,. ills. and other -releases of ,ollutant:'are i 'arid;electngatcuttir�s,; Iastic�,:S rdfOarmTwncrete gad idthertresh-r-build- MIN. � , --:. y_-, r,PP -.P �g ,.ge --- - -- -- - - � -- P O `<' =- P P,pe 9 - I a a aretocated. rstorrnwaterdischafgesfromlthe^permittedslte;andl Lic, No, 035724 0 contained and 7cleaned immediately ;upon -discovery Anycont inn tedi materials products F e, will tondu6GIn ctionsvn dccorance with-t eh ifre uen -noted atlove :- „ , _ _ „-, - spa a q _oY ,are to:b :dis o 9 accordance with federal rstate.,amd1orlotaliae uirements- r - --" = �- r r= r" `- 3 MIN. Shownon o - -+ - - _ . J . - - e ..p sed q ✓ ": Each fad( - -, dy;;must fiave lappropnate s1 , r to mfomi users a�Fiere' the tiadicated i - r -:". Locations ! ofOedlcaieafA f s for store atSd dis I of G 'theOPEFtATOR aNSREGTIONS,-section of this sFfeet_ -. , . 18 Date Plan 1 ). hazardous end tdxiCmiteis P n ,P \� ,� ✓ 'she O ; p g pp pate materials %area(s);aare-located. MIN Sheet'# s pperator s shall ensures ill containment :kits contains a ro n g.,fabsortient material and; ads,_, brooms, g, nd,gtc)`arei$vailable aE J- _ - �I UALIFIEDPEFf$__ L FSSIONALENG a Shown on -Location a ro nateflocations rinclutlm Abut"not limited toy des- noted areas foiwehicle arid- - r (s) of Ded/cated/tre�(s)%r storage of;construction. © IMII N, - Approved g p lan Sheet _ , r equipment mamtenan P�';vehicle and Istepand stouagea d tl sposal bf hazardous' oaf P ,products and.materials-�P,lan construction materials roducts and" { I# s �, y Name -�IprlPtil_ PP P , 9 Approved 'SECTION REVISIONS?OLOCATIONS Na ,arid toxic' materials and`sanatary,waste faakties,- A Plan Shown on _ Phone c Locabon(s) of Dedicated Areas) for storage Qperator(s) ✓ The 9ooaeons of the spilfooritainmenftiits are identified as described below; - rDafe Plan ;REVISIONS TO'LOCATIONS Sheet' (s ] Viand disposal of hazaMous and toxic:wastes I Initials- - . - - ---" " Da f Shown on Locetion(s) of bedieateaFArea(a) for operator(' AitJifitsnal lnformation`is Located in`Tabs6iof the $�WRPP Binder. Mown on s): Date Plan Sheet Location to Plan"Sheet- I'# WASHOUT AREA 0 � 3 Approved As ft �Operrater(s) or Delegated Authority, iVwe runaenstaml that prior to initiating land s � _ � ABOVE GRADE CONCRETE r •- of Cgnstru on Products and lmateriass Initials: '; - distt6aance, [the potential palLutamt sources, appropmate control measures, and all �+ r l PREVISIONSTOLOCH,ION$ hownon responsible parties Operator, qualified inspection rersorind,�trractors,eta)}-requrme'd S as a ccmdmirm of the bemer5s crmstruwrin Pit (E,GP) a flhe �tcw afar P Iluticn Shownon., - _ - _ r ti er - - - - i .r_ L.._, r;� rOperator(s) - ate. P afi location s -of DecOc� d'A'• - 3 fof - ( ) -. - - _ - - r .. __r - ISa� Plan Sheet location _ O(1 oortablatoilet8 Preven`bom Plain (S1AfPPP must rbe idemtifeii. rl also unde`r5fienil ffris Pnfiommarom sus[ �# s [nfiils`_J b �� `Sh tyl s be updated as itetessary thrbughaut all Pha§es bf t bxomstrucbon (until the 6CP k3 .i. terminatet DShon7ppov Data iosof'Docgcate7�s or; asertPI ,Sh t�I - ! (Plan. - c consimcdon produds and: fiki ials —_rr- Furtti re more„ ti 3 -#s 2 � 10, HIN, _ _ a y.. jREA!ISIONS'fO= IONLOCATS: - ApprovedT Ilwe certify urihder penalty of (law -that (Ave have read and understand all requiremem`Cs m _Plan_�� -" hown.onf [ti ( P • 9 P pollution -- _ -- ,Lo tion(§prof,DSdicate$AhWs),f6FjV0Ai !1a ?Op€retans) theS�P�P ar TMIDLmd sediml is, Ad ins Ian arequirem-eF management Ian v_ _ - �T„ _- Leta Plan- Prevention plain, TMDL prmvisioms, administrative requierts etc:p and GCP and that REVISIONS TO LUOCATI¢NS Sheet s toilets lmilials r _ the Jnformation herein lis, 'tote (best of my Iknowlezige and IbElief, We, accurate, 'and ✓ ' r - - - I' Shown on ___• --s r_� - �� �_ - cxoro p late, 1 ram aware that there are si g nlficant penalties 'for sub � � i�a false ti pe ify p ental Qua sty of �eaks, (spills,- J P 9 Pe 8 0 The ratio (s) shall not the De artment of Erivironrn d - •- - Locetion s ot-Dedfceted/Irea s-for,waste. -q rato a Date Plan Sh _��(,) _ (�_.,, _..-: _- :K) iniorrmatitm, inc'ludi the -�'ibilit 6f (fine or liror�isofiment for khl viiolations. and.other,releases that discharge -to: or,have'tfie potential 4o Gischarge`to, surface ems` froln,conseubtion products and -materials Initials, TOP of -BERM ^g p ty a ai r"ters immediately upon' discoverrydf the discharge but ,ingno casedlaier ,than 24 # s' W 0 after the discovery Itwe understand that Iliwe are ultimately responsible for compliance with gall ,conditions "The'o erator s) shall not the and requirements of to SWPP�iP rand GOP land for ensuring all contractors !and p ( !Y Dgpadnient of Environmental Quality (DE¢) of leaks;" suFbcontractors on 'the permitted` eite are -aware of the conditions and Frrequirements of p rg o or the -,potential to Vischarge'to the' W�PPP antl 6CP• 0 surface waters"immediate( upon discove,�of the dischar a but in no dace laterthan STRAW r (2 lash e Ts, and other releases that Idischa e t _,—_.r ry :. — _."__ �_f --ch g—__ —. —. 7R61Sb' fL�1AL(i=� r✓ "-- r_r.-_ r_-. - , - - Consul w flocel waste imanageFnent auhonties or'jpnvate )(fries about the` r--_� �_� -__ _ - r_... _ _ _�-_ M o 24 wafter �emseovery: Antten,notice b the rdischerge;must be:sent: to DSQ,and -_-__ -i 1/We shall comply tfi afi oonditi3riis and reBuirFnents of the S �P�P �emd shall at all I� �i rrequirements_,for ,disposing of,Jhazardous: materials -;and/or isoils'ythat may .!be' Y O y ,- y _ TcontarninatedrwntFrhazardobsmstenais- .-- property p ale and maintain all (measures and control (rants (Whited o Count within<five 5 da S'ofthediscover : -- _ - e, - - _ __-- - -- _ times appurtenances) wh eri irb _�.,� _" Environmental - - -_ _ __ -;:-- T _ _ r r ._ -_ h r. _ appurt } whichare finstafed for used to achieve corn;pTiance with the coma t ems of ti c Vuc imaDeartmemtlofEnvicommenital ✓r. - elmeims'WI-€ -✓- - --. - -� v r _ -- -.i-, _.. r._. - - [~ •>, 9 p Chesterfield Lsaunty Follow bill -amd IocaI *Ui ements,that apply the+use,, handling -;and R Never, remove ;the longmal product �labe(-.from the oontamer, ,Follow the the GCP. Pilo `r o�ratfom and Faamte Yomce also includes adequate fmmdin and a quality _ 9 rs: I �STRXWar� Jmanufacttirer'§.recommentledmethodofdisposal:- adequ-atestaffing P � 9 a � � � � °o Pic, �x tics Dept. of Environmental Engineering disposal of pestiades herbicides and"fertikze 98O06aanennmeintoCemterlP:arkway+�jKeepdSemicalson`siteansmall'quamtihesandiinolosetl�well-markedcorifamers. 3 MIN. Schedule eriodic, u-in of orta`ble'toiletsanCdis ose-ofwaste rl mom,WA2a21a ✓ e --- ia - - - - -- - I� -- . _ _ : __r __ :._--.,_,:: __r-_- .� _.. -- - --. P..: - , iP -.rg -Ip =� .: _;".:.'_ it _ 1%we shall ftarke!s8 reasonable steps to mimmfze or re nt�am-,dscin a inTWiol on o9 �I c 1-(ao4)'s98-t`cbc P.O. D 4O +�(Clean.'up_)sotid waste; including (building malenals, garbage; fond{debris on a:Gaity r✓;�Drspoae of�all�sohd }-+rite"atsan authonzedldisposal�site. _. p p Y o lJ800�2.54s2 (Troll IFrree hn VA) Chesterfield, Virpirria 23832-004r0 bests artd , _� , o STAPLE DETAIL � �vToe olk MIETAL 1ha 8 WPP�P ,e-htVor OOP. � rQ � deposif into, covered dumpsters that iare� Perrodicelly emptied sTAKZS (2 PER I� 0 (800) 404 8892 (routslde n, w-Mal -working ( 4) TAf3-T108 l 4 .,, . r: r _ _,. _ _ _ 0 - - �Sthedule;waste;Jc011ectionfto prevent exceeding, tFie (tpacey bflonsdecisntamers. sTRn,W eAi..E) ILwe understanYi'Ihat if it rclete'rrtVineii by the De;pa'rtme"mt of EnY�Lnomnrental Quality (D,€O') hours;) (804)'861-D717 -Additional. [containers 'ma necessary depending on.'the. hase of':constructim 2` r - - - - , - r in consurltabon With 'the State 'Wafer 'Control Board at any time that stormwater y (Y ;Pe 9 i_ P _ SECTION IS VYPPPPJMODII_C14T1ON:5AND REVISI-ONS y a ' discharges care causing (have reasonable 0 4(e.g.; demolition, lead. ; excursion 4-bove aw licatile water -urali pstandard, the DE'f) may, in�consutato + DispowdsIrs6lidwasteetan"atthorizedfdispasalsne. - f Y pP tt tY YCQ .,_.__,. ...� ,_�.�,._ _,- - ,_ .- f The oseraton(s,)isRall-ensurethe SVMP�P�P is Imodifred raintl/or revised to Ireflecia .--,__�.T -_ , _ _ _ __dd __.- y --r-'protected4 with theAdministra�tor takeap,propnateemforc€menta oFandrequine. EGIUIPMENT�I-VEHIELE YIIASH' r � __ ,.� ,_. __ __ ._ __ _ net _ --__ __ _ v � __. _ _ ._ � � r i '- iNG'_(Ensure that: containers (have lids`or'are-otherwise Strom exposurE;td� ., Ipreapitation 4' Cfii anees in guaTiied personrdefegateb �auftr ies for other personnel reWurirad,as a= Modification of iconirel M-easu�es to adequaidly address waiter quality 0 9 4 ✓` �"shin must be'�' r�ucfea�+n ra".'dedicat�il"area ��ihaf'i§ldcated M':mawmife'iiie` _- -_._.--__ _,_1-1-1 l . ,_...._, � -- -- __- r ,--=��_ acormditiom�oftte�Gemeral'Oenshuc`diinlPermit; a�nder�ns; c g -- - - - iDISCHARGES,FROM OTFIE(2 POTENTIAL POLLUTANT _- ,� _ii _ _ - _ verifiable . _,_ _ _ ___ _ c ?iiistande�romstorm:rdrarninlets:ditche,'.vialertiodiesdrivoetlandsl5irtrrw�llesst nna i - � , � Changes h. Submission of valid and veflfrabfe data and informatics that ale ai meet from tTiosei � `res.- i SOURCES_ Yo%DfA , - - _ l V �Cbangles in S*a design,, construction. roperadaiii, r m'a nterance of the -construction represetative of ambient conditions and indicate that the receiving water is c - - - STEEL '--��9 I��Ir�arn. sitetalaffect'"e-ofetialfortlischaresrof-©llutentstatarentaddressedi-the '"-iris"' ter all -haard.,,r REVISIONS of -T ,: �, r-,�-, r _,.-., ,_,_ , �,r^= � ,�.- .. h - th P n - � 9 P h -cast fin atta i mg water qua ty sta � da its, c All wash. water used m,. hide wheel ,waste --must be- erected. toga sediment( - _.__, ____ �,._,.. T-� .... "•,,. _ - - �.a- s _ r- _-_._.ti... c l ; ve n9 �%; f I r n" _- normal implementation of'tfie piamg and c. Cessataor of tiisches of IpaJlutamts from tonatruttiom aativify,a submit DATE ITEM w basin/trap: Discharges rem,other;-polutant souces (e.g.,"water hrsg-,flush g, storm ,sewer MIN. �._.._ f Min a ova r' ndr's ra e' antis d:"�n am" i ` elsewhere s t.be s Ineffective control measures identified diving inactions nor investigations Intlividualpormitiapphcatibriaccor ingltb-9V�AC2&970•�418. 0 ✓ 1: vehicle r,._ _ r -the- -_ ua 9, . b . g ou .. _ to 9_ �) of eM coed us �Ti - - 05118122 PER COMMENTS All ,vehicle _ " condo _ - - - washing rachvities the- sth-- wtreel �a'shing, ��t Have secondary atldressed; rated by operators IUalifed personnel or -state orfederial officials, -L ,containmenI. . facility -.,.._ _-,.__ __, -.. ,.- e _ ,; _. Madifcationsicevisions to tine SV�P�P�P -shall -elude additional or moclifed control y ✓ !-mu pp p gage rs where the dedicated. OthecPotenbal Pollutant Sources Locetiom s of PotentiabPollutant Sourdes larpaoq)a, locatedfhavea ro note%sin tolntorm-use SECTION fC seas esioa219re3stheiden�tifrtldeYiciemc'ies, OPER9T0�(§)t6ELE6ATE6shUTHb11- 3 _., . 0 Name' riM 'Si'nature" ll Date � Adwity O yS PlHown� an Location - - - If modificat sns%rEwsions must be implemented no, later than Seven- ((7) calendar days s- 1ocetion of Water Source necessary Imodifcafons evisions require approval bythe Administr�or or Ci 1 s o Dedlcatt�7raq¢ Shea, III �ILQN_CRET]E-AWi4SH0LVT AF2EAJN�TEs follnwin,gla,ppnoval. > I Wriest weigh - Other Wash : - -- _ - ,- r . , - - - - - -- - - - - �- -- If the necessary Imdorlific9tionsi�r€visioris do not require -approval Illy the Administrator'„ o The facility must be lined vtiM 10 mil plastic (lining that lis free from holes, dears,, or the m®dificabonsdrev,isions muss be implemented lementeo nor to the next anticipated -storm Areas- P p o - other idefects'ttta't lmrg'Ht compromise the materials hmpermeability. evefii tor fas'soon as praL`fcsbla. 0 REVISIONS TOLOCATIONS- -- -� .: -_: n __-, _.-_- - _� -�. ;Ad-itionaf contact information can be found in theSl Binder.. - DATE r IAbsve ground otl store { 0 ga1lonnn�> ✓ The lini roust be antfii®red with s[aptes (2' fisting) or sandbags. ge tanks with: a storage capacity ekceeding,1;32 r - 01-20-2022 have a reasomabl€€arpectaticn !Sf;a vaoha ✓ Side slopes must be 1 1 horizontalavertical r Matter, Blocks colored (blue iindicate information must be [Shown on I 7ga;iritis"orup3nVYateraaf;th�]Ui{ited r=• p ( ) Locaatignof -- _ Water -carte' Operaalours Statesare required tohve a Spill Pteventibd Conntrol annii ,Countermeasure (SPCC)- - _ _ __ _ provided by the Operator use Delegated AiothtsYit}r s1Jedlcated Area(s). an.-- l 'ILocabor mtials �P,lan Stone access Must be pro+niYe"l [between dhe-street arid the concrete washout l ea, � SCALE 3 ActivityPI Sheet'IIs . ! _.__ , , . _,_ __ NOT TO SCALE 0 ✓ !he,discharge of contaminated flush water and_ material; removed during flushing ✓ A "Concrete VWashout" sign artist be (installed [within 30 feet of the washout faccility. Blocks colored', allow Indicate li-mformati0m must r operations Jmust ,tie collected faired_ disposed; jot in ;accordance -with l3ppropriate The sign mlList Ibe mu smaller than r2'"ta'II by #' wide. be provided by the Consiultant (prior to plan approval PROJECT MANAGER v federal; state; and locatrequirements. c BRIAN C. MITCHELL, P.E. rn DESIGNED BY v BCM / LEN r CHECKED BY a 0 PROJ.# c 20140065 3 0 SHEET V C - 13 r i- � �_ _ Is \ / / /----------_ I r r ' MM poll \��'d''P" � ,• • �-^�3�1 �'�'!�� _rat_ 1 � a a 0 s � 1N / / *0 f 3 1 ♦1 FEMME" 10 w J 9ERK➢ f4B N>� V UPON NANB BY (•y11N1L J - Wit,' gff� � $ a �� i r�ex� IIr4 DA 125 ♦� \ I o \ I . 1 1 1 •I \ 0 /0 0 I �\_ .e�O o OO \ '� .i' �4 0 / O O - O O O/. O O O O O � .o 1 DA o A M BUFFER zIIIIIII , , i �53 \ 11 t 1 ' 9R NNRE I 5 // .NW I I I 3 . I � , I , i \ r 50 11 r a _48 1 47 smP Ba / 46 / fA 45 AIN 44 12 r 4 I I I I DAIF ' I \ 00\0 1` I n/ DA EX185 a✓ !y .I f 95 ' - / f a <' ; ,m ^�I I , ' - DA EX18740 _-- __ DA EXI DA EX189 ' \ r i 4w Am DA 107 j -- I I Iry 57 j 58 ;\ STRUCTURE IDA RUNOFF ACRES "C" 1 0.73 0.35 3 0.25 0.66 5A 0.62 0.59 5 0.58 0.57 7 0.33 1 0.68 9 1.14 0.46 11 0.45 0.58 13 1.18 0.55 15 0.27 0.72 17 0.01 0.90 19 0.13 0.67 20A 0.00 0.00 21 0.87 0.47 23 0.82 0.59 25 0.54 0.66 27 0.41 0.71 29 0.00 0.00 31 0.00 0.00 33 0.00 0.00 37 0.75 0.62 39 0.47 0.58 41 0.09 0.77 43 0.33 0.57 45 0.48 0.58 47 0.27 0.52 49 0.32 0.69 51 0.16 0.75 53 0.00 0.00 59 61 63 67 0.72 0.48 69 1.81 0.42 71 1.51 0.41 73 0.00 0.00 77 0.00 0.00 78A 0.00 0.00 81A 0.33 0.52 81C 1.08 0.53 81E 0.56 0.53 81 0.63 0.51 83 0.55 0.66 85 0.13 0.58 89 91 95A 95 0.39 0.57 0.64 0.62 97 0.18 0.73 99 0.32 0.75 101 0.00 0.00 102A 0.00 0.00 102C 0.00 0.00 105 0.50 0.52 107 0.38 0.58 109A 0.26 0.53 109 0.13 0.76 111 0.17 0.51 112A 0.00 0.00 115 0.14 0.77 117 0.32 0.77 119 0.11 0.74 121 0.12 0.80 123 0.26 0.51 125 0.54 0.59 127 0.00 0.00 129 0.00 0.00 133 0.40 0.65 135 0.21 0.76 137 0.05 0.78 139 0.05 0.78 141 0.11 0.68 143 0.47 0.45 145 0.31 0.53 147 0.45 0.39 149 0.47 0.45 153 0.33 0.77 155C 0.42 0.70 155A 0.16 0.64 155 0.34 0.74 157 0.03 0.90 159 0.00 0.00 161 0.00 0.00 163 0.00 0.00 165 0.00 0.00 1"=100' CP10V CP 8� a GRAPHIC SCALE B100 0 50 100 zoo 8y 8 e cpO B 1 9( IN FEET ) 1 inch = 100 ft. 8 ti q