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HomeMy WebLinkAboutWPO201700011 Plan - VSMP WPO VSMP 2017-12-21VIRGINIA STORM WATER MANAGEMENT PLAN FOR =0:111 I M NJ • _J WPO 201700011 (ASSOCIATED WITH SDP 2017.00006) TM 789 PARCELS 15C3 RIVANNA DISTRICT, ALBEMARLE COUNTY, VIRGINIA STORMWATER MANAGEMENT NARRATIVE Stormwater Management is provided for this site in accordance with the Technical Requirements of Part IIB of the state drainage code. The developer is proposing to increase the impervious area of the site to provide additional parking and a new building. For the proposed development, channel protection and flood control is provided by means of 344' of 36" drainage pipe with a control structure that provides detention for the 1 -yr Energy Balance, 2 -yr and 10 -yr storms. In order to provide a non-erosive outfall condition from the detention pipe outfall, a level spreader curb is proposed which will re-create the current condition of sheet flow at the rear of the property. In the event of a 100 -year storm, overflow will travel safely offsite without impacting any buildings. For water quality control, the developer is proposing to purchase nutrient credits for the site. LEVEL SPREADER NARRATIVE In order to address adequate outfall for the proposed construction, the developer is proposing to provide storage to meet the energy balance for the 1 -year storm. In order to provide a non-erosive outfall for the 2 -year and 10 -year storms, a level spreader is being proposed. By way of background information, the drainage divide runs from East to West such that the front 1/4 to 1/3 of the site drains by means of sheet flow to the curb and gutter along South Pantops, Drive. This outfall direction is not feasible since there is no storm drain outfall in the vicinity of the project and flow over the sidewalk is not acceptable to VDOT due to safety and maintenance concerns. The closest storm drain inlet is approximately 200 feet down South Pantops Drive at an inlet in front of Advance Auto Parts. The site is bounded along; the entire rear perimeter with preserved slopes, and a piped outfall through these would be a last resort. In order to develop a solution, the existing drainage pattern is to be mimicked and the 2 and 10 -year storm runoff will leave the site via sheet flow where it does today along the southeastern property line. Today, there is an existing detention trench at the rear of the site which i& controlled by a 4" PVC outfall pipe. From there, the water travels by sheet flow across the property line with the adjacent County -owned property. There is no evidence of significant erosion at the 4" pipe outfall and the system has been in place for at least 10 years. Our intention with the level spreader is to mimic predevelopment conditions and providle sheet flow on to the adjacent property. We have proposed a 10' long concrete level spreader just downstream of Ithe 15" outfall pipe from the proposed SWM pipe detention system. The maximum flow from the outfall pipe will be approximately 4 cfs. 10' is the maximum length that can be provided without significant impact to existing water and sewer facilities and adjacent site constraints. There is an existing 10" ACSA-waterline and an existing 24"-ASCA "AC" piple within easements that run across the site and through the sheet flow area. The ACSA has indicated their tentative approval of the level spreader location due to its shallow design. Final ACSA approval will be provided prior to plan approval. To provide additional erosion control measures, the concrete level spreader turns to provide additional sheet flow length to minimize scour and provide an overflow. Runoff that goes over the concrete level spreader in any location will sheet flow into or across a 2' -wide strip of sod. We have also provided a 65-sf pool that is V deep and filled with river rock to promote infiltration of runoff into the soil. The use of concrete allows the contractor to construct the level spreader to design elevations. No weep holes are proposed to the level spreader due to invert. Runoff wiill either infiltrate or evaporate from the pool during dry periods. LEVEL SPREADER MAINTENANCE NOTES 1. Check for and redirect flows from the outfall pipe as needed so they do Inot short-circuit the level spreader 2. Check for and remove debris and sediment build up in the pool 3. Inspect condition of rip -rap in pool 4. Check for and address scour and erosion do not occur at the level spreader 5. Vegetative density exceeds a 90% cover below the level spreader 6. Once level spreader is established, there will be minimal maintenance exccept for:. Spring clean-up, minimum twice a year mowing, and repair of the rip -rap pool CONSTRUCTION SEQUENCE Phase 1 1. Perform demolition operations. 2. Provide perimeter controls to include construction entrance with water source, sediment trap (STI), diversion dikes, silt fence, tree protection fence. 3. Contractor to exercise caution when working near the steep slopes (preserved) along the rear of the property. Establish diversion dikes, silt fence, and tree protection at the top of the slope as one of the first measures. Inspect and repair these controls diligently throughout construction. 4. Direct wash water from construction entrance to diversion dikes that lead to ST1. 5, Once Phase 1 controls are installed to the satisfaction of Albemarle County, proceed to Phase 2, Phase 2 1.Grade pad site for new office and provide domestic utility connections and fire line connection. Stub utilities to at least within S' of the building. Building construction may commence once the permit has been issued and the pad is ready for delivery. 2. Throughout Phase 2, contractor to inspect controls at the top of the steep slope area and repair these controls diligently throughout completion of construction. 3. At the same time, contractor may begin sitework to include installation of retaining wall adjacent on the east side of the existing building prior to excavating for SWM system. Bottom of footer of retaining wall adjacent to SWM pipes to extend at least to below the invert of the SWM pipes. Maintain positive flow to the sediment trap (STI) as long as possible prior to installation of structures 1 and 2 and level spreader. Provide a watertight cover over the orifice and weir in the weir wall until system is operational to keep sediment contained. 4. Provide inlet protection over the DI grate in Junction Box Structure 2 once sediment trap is phased out. 5. Complete retaining wall construction and bring parking lot subgrade. 6. Install curb as shown on plans. 7. Begin base stone for parking lot area. 8. Provide landscaping as shown on the landscape plan and plant any slopes steeper than 3:1 with low -maintenance ground cover such as monkey grass. 9. Provide final stabilization for all areas not built or paved on. 10. Remove E+S Controls with permission of County E+S Inspector. SWI Cover Sheet SW2 Notes & Details SW3 Existing Conditions / Demo Plan SW4 E&SC Plan Phase I SW5 E&SC Plan Phase II/SWM Plan SW6 Pre & Post Development Overall Drainage Areas SW7 Pre & Post Development Energy Balance Drainage Areas SW8 Erosion & Sediment Control Details SW9 SWM Details/Calculations/Profile SWIG VRRM SpreadsheeVCalculations/Storm Design Calculations 1. SITE AREA: 1.01 AC 2. TOTAL LAND DISTRUBANCE : 0.71 AC 3. IMPERVIOUS AREA: 0.47 AC Lic. No. 33028 11/8/17 DATE: 2/06/17 Z Q H a � � ALBEMARLE COUNTY COMMUNITY DEVELOPMENT DATE z M o � W a ALBEMARLE COUNTY ENGINEER DATE w P4 E O w � APPROVED by ibe Albemarle County fYi c:� W Community De/veloament Department Date _121/�7�L L1 W CD CD File_ 1,&ZWQ v SWM SYSTEM MAINTENANCE NOTESo rE- E-q 1. Check e Junction box corntrol structure, weirs and any connecting or outgoing storm pipes for Z sediment buildup and structural damage. Note if any sediment needs to be removed. z Q 2. Check that no vegetation forms an overhead canopy that may drop leaf litter, fruits and -:11 other vegetative materialls that could clog the inlet. F4 3. Generally inspect the upland contributing drainage area for any controllable sources of W sediment or erosion. y 4. Ensure maintenance access is clear and unobstructed. 5. Check to see that manhole covers can be opened and operated. DOM. PROJECT No:15.0t INDEX TITLE: 6. Based on inspection results, specific maintenance tasks will be triggered. 7. Ensure junction box and 36" detention pipes are free from sediment. Perform periodic TNT vacuum or manual cleaning. IVIIVI 8. Check weir wall to ensure weirs, openings, trash racks are not clogged and flow freely. SHEET NO: 1 OF 10 DATE: 2/06/17 ENERAL N GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIlVIENT 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 approved by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of thie 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 8:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner that maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because of slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approval by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 901bs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied of 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 85% Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sif. Alternatives are subject to approval by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commences. (Water Protection Ordinance section 17-207B) CONTRACTOR'S COORDINATION RESPONSIBMITIES 1. The contractor is required to obtain any/all permits required for construction of these plans, 2. Any time work is performed off-site or within on existing easement, the contractor is to notify the holder of said easement as to the nature of proposed work and to follow any guidelines 'or standards which are associated with or referenced in the recorded easement. 3. The contractor is to check that all easements, letters of permission, etc, are recorded/obtained prior to the start of any construction. 4. Contractor to verify all site plans and profiles and details for consistency and if conflicts exists, contact engineer for clarification and/or direction. Interpretation determined by contractor shall be done at his/her own risk. 5. The contractor is to verify that the relocation of all existing utilities in conflict with proposed work has been completed including utility poles. 6. Contractor shall comply with fencing and tree preservation signage required by Albemarle county code. 7. Contractor shall not rely solely on electronic versions of plans, specifications, and data files that are obtained from the designers, but shall verify location of project features in accordance with the paper copies of the plans and specifications that are supplied as part (of the contract documents. 8. Contractor shall comply with all wetland permit requirements, if a permit exists. 9. Contractor shall be responsible for all relocations, (unless otherwise noted on plans) including, but not limited to, all utilities, storm drainage, signs, traffic signals & poles, etc. as required. All work shall be in accordance with governing authorities requirements and project sitework specifications and shall be approved by such. All cost shall be included in base bid. 10. Contractor shall control stormwater runoff during construction to prevent adverse impacts to off site areas, and shall be responsible to repair resulting damages, if any, at no cost to owner. 11. This project disturbs more than one acre of land and falls within the Virginia Stormwater by Management Program (VSMP), General Construction Permit (GCP) program as administered y the Virginia Department of Conservation and Recreation (DCR) under the jurisdiction of the EPA. Prior to the start of construction, the contractor shall file a GCP notice of intent with the DCR and prepare a stormwater prevention plan in accordance with the VSMP regulations.. 12. Contractor shall coordinate with all utility companies for installation requirements and specifications. 13. Contractor shall be responsible for site security and job safety. Construction activities shall be in accordance with OSHA standards and local requirements. 14. Contractor shall dispose of demolition debris in accordance with applicable federal, state and local regulations, ordinances and statutes. 15 Existing utilities shall be terminated, unless otherwise noted, in conformance with local, state and individual utility company standards specifications, and details. The contractor shall coordinate utility service disconnects with the utility representatives. 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 flll material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riser joints are to be watertight within stormwater management facilities. 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. GENERAL CONSTRUCTION NOTES: 1. Prior to any construction within any existing public right-of-way, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies occur the requirements of the permit shall govern. 2. All materials and construction methods shall conform to current specifications and standards of VDOT unless otherwise noted. 3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction. 4. All slopes and disturbed areas are to be fertilized, seeded and mulched. 5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to be achieved. 6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel. 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices. 8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe -Class III. 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: 1. Construction inspection of all proposed roads within the development will be made by the County. The contractor must notify the Department of Community Development (296-5832) 48 hours in advance of the start of construction. 2. Upon completion of fine grading and preparation of the roadbed subgrade, the contractor shall have CBR tests performed on the subgrade soil. Three (3) copies of the test results shall be submitted to the County. If a subgrade soil CBR of 8 or greater is not obtainable, a revised pavement design shall be made by the design engineer and submitted with the test results for approval. 3. Surface drainage and pipe discharge must be retained within the public right-of-way or within easements prior to acceptance by the County. All drainage outfall easements are to be extended to a boundary line or a natural watercourse. 4. Guardrail locations are approximate. Exact length, location and appropriate end treatments will be field verified at the time of construction. Additional guardrail may be required at locations not shown when, in the opinion of the County Engineer, or designee, it is deemed necessary. When guardrail is required, it shall be installed four (4) feet offset from the edge of pavement to the face of guardrail, and roadway shoulder widths shall be increased to seven (7) feet. 5. Where urban cross sections are installed, all residential driveway entrances shall conform to VDOT CG -9(A, B or C). 6. Where rural cross sections are installed, all residential driveway entrances shall conform to VDOT standard PE -1. 7. Compliance with the minimum pavement width, shoulder width and ditch sections, as shown on the typical pavement section detail, shall be strictly adhered to. 8. Road plan approval for subdivisions is subject to final subdivision plat validation. Should the final plat for this project expire prior to signing and recordation, then approval of these plans shall be null and void. 9. All signs or other regulatory devices shall conform with the Virginia Manual for Uniform Traffic Control Devices and the Albemarle County Road Naming and Property Numbering Ordinance and Manual. 10. Traffic control or other regulatory signs or barricades shall be installed by the developer when, in the opinion of the County Engineer, or designee, they are deemed necessary in order to provide safe and convenient access. 11. The speed limits to be posted on speed limit signs are 5 mph below the design speed, or as determined by VDOT for public roads. 12. VDOT standard CD -1 or CD -2 cross -drains under to be installed under the subbase material at all cut and fill transitions and grade sag points as shown on the road profiles. 13. A video camera inspection is required for all storm sewers and culverts that are deemed inaccessible to VDOT or County inspections. The video inspection shall be conducted in accordance with VDOT's video camera inspection procedure and with a VDOT or County inspector present. ACSA GENERAL WATER & SEWER CONDITIONS 1. Work shall be subject to inspection by Albemarle County Service Authority (ACSA) inspectors. The contractor will be responsible for notifying the proper ACSA officials at the start of the work. 2. The location of existing utilities across the line of the proposed work are not necessarily shown on the plans and where shown are only approximately correct. The contractor shall, on his own initiative, locate all underground lines and structures, as necessary. 3. All materials and construction shall comply with the current edition of the general water and sewer construction specifications, as adopted by the ACSA. 4. Datum for all elevations shown in national geodetic survey. 5. The contractor shall be responsible for notifying miss utility (1-800-552-7001). 6. All water and sewer pipes shall have a minimum of three (3) feet of cover measured from the top of pipe, over the centerline of pipe. this includes all fire hydrant lines, service laterals and water lines, etc. 7. All water and sewer appurtenances are to be located outside of roadside ditches. 8. Valves on deadend lines shall be rodded to provide adequate restraint for the valve during a future extension of the line. 9. Trees are not permitted in the ACSA easement. 10. The contractor shall be responsible to comply with the no -lead regulation regarding brass fittings effective January 4 2014 Senate Bill 3874 which amends the safe drinking water act). ABBREVIATIONS UTILITY ARV - AIR RELEASE VALVE BOA - BLOW OFF ASSEMBLY CO - CLEANOUT CTV - CABLE TELEVISION DI - DROP INLET DIP - DUCTILE IRON PIPE ELEC - ELECTRIC FH - FIRE HYDRANT FM - FORCE MAIN F&C - FRAME AND COVER F&G - FRAME AND GRATE GT - GREASE TRAP GV - GATE VALVE HDPE - HIGH DENSITY POLYETHYLENE INV - INVERT GENERAL ABAN - ABANDON(ED) ADJ - ANOINER AHD - AHEAD APPRX - APPROXIMATE BC - BACK OF CURB BF - BASEMENT FLOOR ELEVATION BIT - BITUMINOUS BK - BACK BM - BENCHMARK BS - BOTTOM OF SLOPE CB - CATCH BASIN CG2 - HEADER CURB C06 - CURB AND GUTTER CG12 - ACCESSIBLE CURB RAMP CMP - CORRUGATED METAL PIPE CONIC - CONCRETE CY - CUBIC YARDS DIA - DIAMETER EL - ELEVATION ELEV - ELEVATION ES - END SECTION EW - END WALL EX - EXISTING EXIST - EXISTING FON - FOUNDATION FF - FINISHED FLOOR ELEVATION IF - IRON FOUND IS - IRON SET LOD - LIMIT OF DISTURBANCE LF - LINEAR FEET LT - LEFT MAX - MAXIMUM MIN - MINIMUM MON - MONUMENT CONCRETE NIC - NOT IN CONTRACT NTS - NOT TO SCALE OC - ON CENTER OH - OVERHEAD PE - POLYETHYLENE PERF - PERFORATED PROP - PROPOSED PRVD - PROVIDED PWW - PAVED WATER WAY R - RADIUS RCP - REINFORCED CONCRETE PIPE REM - REMOVE READ - REQUIRED RET - RETAIN RT - RIGHT R/W - RIGHT OF WAY R&D - REMOVE AND DISPOSE R&R - REMOVE & RESET SO - SIGHT DISTANCE SQ - SQUARE STA - STATION SW - SIDEWALK SWEL - SOLD WHITE EDGE LINE SWILL - SOLID WHITE LANE UNE TBA - TO BE ABANDONED TBR - TO BE REMOVED TO - TOP OF CURB TS - TOP OF SLOPE TYP - TYPICAL UG - UNDERGROUND VESCH - VA. E&S CONTROL HANDBOOK YDS - YARDS LINETYPE LEGEND EXIST PROP OWNER MH - MANHOLE BALLIF INVESTMENTS, LLC MANAGED TURF 170 SOUTH PANTOPS DR PVC - POLYVINYL CHLORIDE CHARLOTTESVILLE, VA 22911 RIM - RIM ELEVATION DEVELOPER: SAN - SANITARY SOUTHERN DEVELOPMENT GROUP SCC - STORMWATER CONVEYANCE CHANNEL 170 SOUTH PANTOPS DRIVE OHE- CHARLOTTESVILLE, VA 22911 - SD STORM TRANSMISSION LINE EASEMENT LEGAL REFERENCE & SOURCE OF TITLE: DB PG STIR - DRAINAGE STRUCTURE ZONING LINE -. -..- SITE AREA: 1.01 AC TSV - TAPPING SLEEVE & VALVE MAGISTERIAL DISTRICT: RIVANNA UP - UTILITY POLE SOURCE OF BOUNDARY SURVEY. PLAT OF RECORD WL - WATER LINE SOURCE OF TOPOGRAPHY DOMINION ENGINEERING & DESIGN DATED 05/18/2015 FIELD VERIFIED BY DESIGN ENGINEER ON 03/09/2017 WM - WATER METER AND SUPPLEMENTED ON 8/14/17. DATUM: NAVD WV - WATER VALVE 1988 6"V - 6" VALVE THE AREA SHOWN HEREON IS LOCATED IN ZONE "X" AND DOES NOT FALL WITHIN FLOOD HAZARD ZONE "A" FOR A 100 YEAR FLOOD AS SHOWN ON FEMA MAP NO 51003CO289D. THIS DETERMINATION HAS BEEN MADE BY GRAPHIC METHODS, NO ELEVATION STUDY HAS BEEN PERFORMED AS A PORTION OF THIS PROJECT. AREA SUMMARY MAX - MAXIMUM MIN - MINIMUM MON - MONUMENT CONCRETE NIC - NOT IN CONTRACT NTS - NOT TO SCALE OC - ON CENTER OH - OVERHEAD PE - POLYETHYLENE PERF - PERFORATED PROP - PROPOSED PRVD - PROVIDED PWW - PAVED WATER WAY R - RADIUS RCP - REINFORCED CONCRETE PIPE REM - REMOVE READ - REQUIRED RET - RETAIN RT - RIGHT R/W - RIGHT OF WAY R&D - REMOVE AND DISPOSE R&R - REMOVE & RESET SO - SIGHT DISTANCE SQ - SQUARE STA - STATION SW - SIDEWALK SWEL - SOLD WHITE EDGE LINE SWILL - SOLID WHITE LANE UNE TBA - TO BE ABANDONED TBR - TO BE REMOVED TO - TOP OF CURB TS - TOP OF SLOPE TYP - TYPICAL UG - UNDERGROUND VESCH - VA. E&S CONTROL HANDBOOK YDS - YARDS LINETYPE LEGEND EXIST PROP DESCRIPTION ..- PROPERTY UNE MANAGED TURF WATERLINE PIPE IMPERVIOUS WATERLINE EASEMENT ----.; -. - s UTILITY/SANITARY ONE - - ---- ------ UTILITY EASEMENT FOREST/OPENSPACE UNDERGROUND POWER UTILITY OHE- OVERHEAD POWER LINE 2.2...2.2... TRANSMISSION LINE EASEMENT CONTOUR LINES .......... ZONING LINE -. -..- FED & STATE DAM BREAK INUNDATION LINES . .., _. ., 100YR FLOODPLAIN LINE .......... RIVANNA RIVER BANK AND 100' BUFFER NOTES: I. THE SIZE OF THE SYMBOLS MAY VARY FROM THOSE SHOWN. 2 ALL ABBREMATIONS AND SYMBOLS SHOYN MAY NOT BE USED. PREDEVELOPED: FOREST/OPENSPACE 0.44 AC MANAGED TURF 0.33 AC IMPERVIOUS 0.23 AC TOTAL 1.00 AC POSTDEVELOPED: FOREST/OPENSPACE 0.32 AC MANAGED TURF 0.23 AC IMPERVIOUS 0.46 AC TOTAL 1.012 AC (INCREASE BY 0.012 AC DUE TO BLA) 10 WATERSHED: RIVANNA RIVER BENCHMARKf81: BENCH MARK IS NAIL IN CURB LINE AS SHOWN. ELEV = 376.28' WATER SOURCE: EX. 8" ACSA WATERLINE THROUGH PROPERTY SEWER SERVICE: EX. 30" TRANSITE ACSA MAXIMUM BUILDING HEIGHT PERMITTED: 65' REQUIRED STEPBACKS: FLOORS ABOVE 40 FEET OR THE THIRD STORY, IS LESS, SHALL BE STEPPED BACK A MINIMUM OF 15 FEET, MAXIMUM BUILDING HEIGHT PROPOSED: 40' PRIMARY ZONING: HIGHWAY COMMERCIAL, HC OVERLAY ZONING DISTRICTS APPLICABLE: PRESERVED STEEP SLOPES OVERLAY DISTRICT FLOOD HAZARD OVERLAY DISTRICT (100YR FLOODPLAIN) BUILDING SETBACKS PER ZONING ORDINANCE 4.20: FRONT: MIN. 10' FROM EDGE OF RIGHT-OF-WAY, MAX. 30' FROM EDGE OF RIGHT-OF-WAY CURRENT USE: PROFESSIONAL OFFICE (4,000 TOTAL GSF) PROPOSED USE: PROFESSIONAL OFFICE (7,934 TOTAL GSF) NOTE: THIS SITE IS NOT LOCATED IN A PUBLIC WATER SUPPLY RESERVOIR. ITE TRIP GENERATION TOTAL BUILDING AREA = 3,934 GSF (NEW BUILDING) + 4000 GSF (EXISTING BUILDING) = 7,934 GSF DUE TO THE SMALL GROSS AREA USE (ITE USE CODE 750, SINGLE TENANT OFFICE BUILDING) AVERAGE TRIPS PER DAY = 270 VPD BUILDING NSF CALCULATIONS: GROSS AREA = 7,934 SF NET OFFICE FLOOR AREA = 7,934 SF * 0.8 = 6,347 NSF PARKING: • OFFICE PARKING REQUIREMENT: 1 SPACE / 200 NSF = 6,347 NSF / 200 = 32 SPACES, INCLUDING (2) ADA SPACES. • PARKING REDUCTION BASED ON NEW SHARED PARKING AGREEMENT - 2 SPACES PER SECTION 9.12.7 • TOTAL REQUIRED PARKING: 30 SPACES • SPACES PROVIDED ONSITE: 30 SPACES, INCLUDING (2) ADA SPACES LOADING SPACES: • LOADING SPACES REQUIRED: 1 • LOADING SPACES PROVIDED: 0 -(PLEASE SEE APPROVED WAIVER LETTER BELOW - DATED JUNE 22, 2017) DUMPSTER REQUIRED: • DUMPSTER REQUIRED: 1 DUMPSTER FOR BUILDINGS EXCEEDING 4,000 GROSS SQUARE FEET • DUMPSTER PROVIDED: 0 *(PLEASE SEE APPROVED WAIVER LETTER BELOW - DATED JUNE 22, 2017) •"JIT I COUNTY OFAL ENYARLE ®eparanent of Cmmmutity perclopmenl 401 Mdrfiw Rd. North Wing, Chullattesvill" VA72902 Phune; 434-296-5832 Fax: -434-972-4126 1une.22, _OI7 Keith Luu:uter South.. Dcveidp w., klgoc tcr(w..:ulllcrn-devclonu: 1 o,o Bh SDP201700006 Aica de Bmild­ Offiwa Building Vtalor Son Plain :Amendment-Appeuv.l of Ratvern t4,18-4,12.I3(c)L .dung Spaces and ]1W.12.13().)J Inpster Ped' D., fr Your Mqa,t t In, lradin,g p y t dChlptll Is. Se,two 41 13(') o 7 y, O lu Leh h - pp - d by th Zooing Ahon.utnoriurol Corr.ry E ' 7 y the dumpst ( xl y mme t fC hnptu INS t n412-:1}() I I Z ngOd h b pp. d by the Zoning 4d ninn W end County Enginven It has ber n dnu meii rh t d ; .,i, iuta loading space,; and duralnuer on TMP 078U0 ON 00-015(7 .[rr adQqraff to seri,the Proposcd offcy budding. on too ndiu=t TRIP 078OMQU 0001 C3-, ns, dep ted on the 11.j.r ti€e plan nuu dmera appli,ation SDP?6f7OU006 --- Tletollun g t WdMiry 5 2OJ7 4 th,Zuung 11 -,_) t R 11g,a. I„ "Op- -i- , f rlm Alm .h _t, 2017 u&i u, Z kon, /m sh< d parl:[ng ..nd 'Crop", -u;. ti /-i] tn+u uI F ,h ...... 1 p mut i n'irh rlr G rem tmbu,eer,1 Je Fby.upp­ h, 'Ino'i rent and ­"/ro p Aing' "'id' &-p-, o ­or f r Le,yadmg 1 oy d <u proposed " rhe watvc tt d v th the fiillo,vi.g iundt 1:.Approval of the a uir sin, plati amendrant is wnlingcurf upon the plating and mcrrd9bol of an. ,useurno Ixg t THIP N7800:00 00-015C2 an4 TMP 07800 00 00.n15C3 g' r g _ t' t f the druupaTnd and k,ad in; -,space Th, t' ,,d de d urll be rm 'd und pp -d through th l ... d., l,d1 tpl-k ppl t SCB201700095:- tly for du'>pro)cet Th - tfpl -.d- m r hor,uM1 x brr.dprtd f-- dm legal Hent tdexd book awd page nu bnr)whe 0[e. n[,ar ukdend ptat(ed.3 Siv�rely. Cameron, Lno$ino Snni4[ ph'ro e C -C: Dmtin (u..'. I'.E. t dereemerdd.ur : c ens co nl Rncloeetl: XV.N,t Request 7oungAdminimacar tCbmm td Apt,o l I - EE�o c a>Z_� 'L C mm 0 Nvv C �A R 0 LU s. is p e"N Li, No. 33028 11/8/17 0 G ou w 0 0 GO C a H W Q i� H O DOM. PROJECT NO:15.003 INDEX TITLE: SHEET NO: 2 OF 10 DATE: 2/06/17 LINETYPE DESCRIPTION -. FED & STATE DAM BREAK INUNDATION LINES .,. _ 100YR FLOODPLAIN LINE __s ...., RIVANNA RIVER BANK AND 100' BUFFER RIVANNArA\RIVE,R SANITARY SEWER AS -BUILT INFORMATION \ r, SSMH #A TOP -383.77' 24" AC PIPEIMV IN=375.07' \ \� 24" AC PIPE INV OUT=374.87" SSMH #'B TOP OF RIVER BANK \ �!' \ , 55\v \ \ APPROXIMATE LOCATION TOP -379,83' `\ ��` 01 y� 100YR FLOODPLAIN 24" AC PIPE INV IN=377.23' 24" AC PIPE IMV OUT=371.03' APPROXIMATE STATE DA BREAK INUNDATION ZONE SSMH gC TOP -357,56' PIP, INV IN—ZSR -, .. dl FYICIiwn I Ammr.APIMC _ i ' • ,� \ i Li.. No. 33028 11/8/17 F-1 y E— J W w z z O a W H q _ z Q � o Ix �:D C z o Q E- -OM. DOM. PROJECT NO:11 INDEX TITLE: I / I I SW3 SHEET NO: 3 Of 10 20 0 20 40 60 I"=20' DATE: 206/17 EROSION AND SEDIMENT CONTROL LEGEND LINETYPE DESCRWTION \ _ .� FED & STATE DAM BREAK INUNDATION UNES o *THESE ITEMS ARE RELATED TO THE POLLUTION PREVENTION o o 3.01 SAFETY FENCE SAF) - - \ PLAN (PPP) EXHIBIT. LOCATIONS ARE SUBJECT TO CHANGE. AS :L 100YR FLOODPLAIN LINE ( \ \ CHANGES ARE MADE, CONSTRUCTION ACTIVITY OPERATOR OR C 3.02 ENTRANCETION DE RIVANNA RIVER BANK AND 100' BUFFER \ \\ - DESIGNEE IS TO UPDATE THE PPP. 0 C N U a v ❑ �� \ > \ RIVANNtVA RIVER = (\ E 3.05 ILT FENCE SFE � IN ORM DRAIN �\ 0 W 3.07 sT PROTECTION IP .09 TEMPORARY DD FO 21:/ 3 DIVERSION DIKE ��h' �xs. 3.13 SEDIMENT TRAP ST� L{/rte l� r \. t001R x� 4A Lo!,'i II06! J • cy �i 3.14 BASIN SEDIMENT SB ® 0 t1'Y / LBEMARL J \ p ss G .FIC 3.19 RIPRAP RRu t t'It. • csrllLit;V( \ \\. r J ,IF^1A- 0 \ZION- r'�U s'-j; l�, L- )� LTH Op _ ?00 SIREAM DUFFER .i QP 3.31 TEMPORARYf�� SEEDING I 3.32 PERMENANT �PS 1 Ex J L N,..'. MAA RRS ~ SEEDING \ 0 841 PG j13LIC AJ...; Lic. No. 33028 u \ NOTE: ORANGE SILT FENCE MAY ALSO BE USED AS 5AN TFY - FFs r' \ $F TREE PROTECTION FENCING /� 6U.LT&� sr ONAL E� - O ..<i' TP 01 2 AF --� c 0/4cr7 n.R, ..r OUT-374.87" _ Spar \ i , w Er C FM I N ,. aG 5^7 - - < A J IN ]7I 23' w_ u -r rL : :r rJ r co TOl' aL Z z c�j a 24 A� NV fl= 448.&',. Q j PRESERVED STEEP SLOPES OVERLAY �✓ m —_ - I TEMPORARY SEDIMENT TRAP (PRIMARILY ARILY IN J/ m a --�1 ENi , c z � i :oy5 PAI a `` �I wPS�\ ZR \ SF � °_ ,- F,� m i L SEN DD 1FIc 101fER ON \ cQ -.— -i_ 1--- �. _ - - -T .. . 101' p -.I DUMP STER* GpNCRr'E PAD 0-93-5 l :: I I I I I '�II�I.vl SF .' -1if 1; CHEMICAL STORAGE*- \ I Vlft - -----------'- -_.. ._I __._.. . `,E,, 1 \ \\ •� / '7� z F� 1•n CONCRETE WASHOUT" ! L \, d. A,.,� /-''. •.\ O 9 •.,,UN'" - , ONTRACTOR TO SUPPLY WATER SOURCE TO r7 X74 �\ :� CLEAN CONSTRUCTION VEHICLES BEFORE >> \ 5 $ g I 1lti (L I / � �, ,✓i LAVATORY* -__ y .ri, � , i i .j1,I}",--LIEI.I: J - - r i' / / rN�. I 'THEY ENTER THE RIGHT-OF-WAY. WASH rr I\ �, ST)LE I w w \ WATER TO BE DIRECTED TO ST-1 AND NOT INTO THE RIGHT-OF-WAY R'ir� III, AREA TO ST-1 = 20,352 SF 0.47 AC p ; >? °'); i lr;i,\ ' \ $F� LIMIT OF CLEARING .<< _ . _ TEM ORARI SOIL j i- -�\• '� "T ri \ i:i4 j - - — .�,I- = ,.... �, _: ....,,p:,, .SKPILE�"AREA - �i - \ \S C `ter?�' ';} \ I II � r % ._ 'I i J. ( I � I • I �. - b � � 71 { I � � � � _ ._ .-'' 'Ff '� 1�,-•.:__...—� L.... ._ r -til r 'I I !t 'L '� V i6 y„� 1.. '\� ,/ iu �! li` z ci $ $F r; 7Fz may:_ y ;- f — , � ,. �x� 7�a 'DF4rrA�K n li.- _ r r�,r- _ _,..7, .•.�.��,..�-�.�.. .. -1. �.. y„- �- .�_' \_ .._..__ — _.._-___--__ O r� r X \\ , APP ,n- - \ naMh l II .0<oat z Q_ E- - - - _. i \ ; - ! _._ __I F c KE,!AiN { b, =-a\ - - �.- � Z� E II P�-, � rNR UR -- \ I f ;•L INiER4AL/ I I '� , Z � O a SOUTH PANTOPS DRIVE I I IEX � o - Wp LK GEL -( \ W W E \ / w I / \ I I DOM. PROJECT N0:15.003 1 7! I Iii / III t / i Il` \\ \• INDEXTITLE: S4 SHEET NO: 4 Of 10 0 20 40 60 80 1"=20' DATE: 2/06/17 LINETYPE DESCRIPTION FED & STATE DAM BREAK INUNDATION LINES 100YR FLOODPLAIN LINE RIVANNA RIVER BANK AND 100' BUFFER EROSION AND SEDIMANT CONTROL PLAN PHASE 11 RIVANNNA RIVER rc,RIV[ 1? 0 co'bvly �'q \-I Jv 01-0,YMER -Tl I ACCE�'� EA, XmL 22.08 l T STORMWATER MANAGEMENT SYSTEM �V\ "6 A HOPE PIPES 0 86 LF ACH �T (4) �6 io.o TOTAL LENGTH = 344! JL TRol, R�U IN� T)IhER 011 PAr D' 20,28-5 -'C—'l A 14 '1 , ", __ " i __­ -I it L DUMPSI­Pi�OP. RET W,�Ll_ FIER y1AX, HT_ 4' CHEMICAL STORAGEX". yo� 41- qONCP�FTF WASH T' �Qj,-X. 2 -STORY BRICK 2--S 10 0". I EX VARIABLE WIDTH -A SWM FACILITY EASEMENT 16VATORY %i DdLIN0 000 Ri,, i;� u'Al 4DB PC FILP�R) G3F PER .-LQCR) [:.;I '1V LIMITS OF C61RING POLLUTION PREVENTION PLAN (PPP) 7. i'0 -THESE n, 'ARE RE -,F - .03AIr Ili, MS'ARE RELATED E D TO THE (�SF tv I! vz_z�_ Z✓ i.<1 140",- />< EXHIBIT.�LOCATIONS ARE SUBJECT TO Iv 4, , , - -4-, , 1. - CHANGE./AS CHANGES ARE MADE, __E CONSTRUCTION ACTIMTY OPERATOR'OR 4` t DESIGNER IS TO UPDATE THE PPR I N, sp, RF Fp,(,p IF! ✓ y 31 N 4. TT AP MA1 I'LLERAL 7, UNDA11011 IL D 611 - ,ILL LIMITS OF CLEARING SILT FEN ACVOF`7­`��_-_ EX. Cn!I'T-RCfAL-- CE E B TO! R SIDEWI SHALL BE REPLACED SILT FENCE ADJACENT ITO ARE IF DAMAGED BY STORM HYDRANT SHALL BE REPLACED STRUCTURE INSTALLATION ENTRA --- . . .... F; DAMAGED=B"NSTAI�AIONI S-0 T- P-,_ 70Y!),R1'vW \L 7= CONTACTOR TO SUPPLY P vg x IIWATER SOURCE TO CLEAN CONSTRUCTION VEHICLES X. ------ BEFORE THEY ENTER THE RIGHT',OF-WAY. WASH WATER TO BE DIRECTED TO ST -1 _4' CONTOURS PER ALBEMARLE COUNTY AND NOT\INTO THE CIS INS PANTOOS DRIVE. BEYOND RIGHT-OF-WAY WESTBOUND RIGHT TURN LANE T 'T Pill (SYSTEM, /A STORMWATER MANAGEMENT Z i, (4) 36- HOPE PIPES @ 86 LF EACH' TOTAL LENGTH 44' EX VARIABLE WIDTH SWM FACILITY EASEMENT IDS PC C) z E - TIT � � E- (2) Ze .4 D4 U) w E- P, E- E- C) co DOM. PROJECT NO:15,003C INDEXTITLE: SW5 SHEET NO: 5 OF 10 0 20 40 60 80 DATE: 2/06/17 2 ;66 c N, SWM PLAN ISEE SHEET SW9 FOR LEVEL E c w 0 10 20 30 40 SPREADER DETAIL 0 m 1"=10' 6 LS 5.7 2' SOD STRIP �X jTRANSITION TO ..........Cu RE co'bvly �'q \-I Jv 01-0,YMER -Tl I ACCE�'� EA, XmL 22.08 l T STORMWATER MANAGEMENT SYSTEM �V\ "6 A HOPE PIPES 0 86 LF ACH �T (4) �6 io.o TOTAL LENGTH = 344! JL TRol, R�U IN� T)IhER 011 PAr D' 20,28-5 -'C—'l A 14 '1 , ", __ " i __­ -I it L DUMPSI­Pi�OP. RET W,�Ll_ FIER y1AX, HT_ 4' CHEMICAL STORAGEX". yo� 41- qONCP�FTF WASH T' �Qj,-X. 2 -STORY BRICK 2--S 10 0". I EX VARIABLE WIDTH -A SWM FACILITY EASEMENT 16VATORY %i DdLIN0 000 Ri,, i;� u'Al 4DB PC FILP�R) G3F PER .-LQCR) [:.;I '1V LIMITS OF C61RING POLLUTION PREVENTION PLAN (PPP) 7. i'0 -THESE n, 'ARE RE -,F - .03AIr Ili, MS'ARE RELATED E D TO THE (�SF tv I! vz_z�_ Z✓ i.<1 140",- />< EXHIBIT.�LOCATIONS ARE SUBJECT TO Iv 4, , , - -4-, , 1. - CHANGE./AS CHANGES ARE MADE, __E CONSTRUCTION ACTIMTY OPERATOR'OR 4` t DESIGNER IS TO UPDATE THE PPR I N, sp, RF Fp,(,p IF! ✓ y 31 N 4. TT AP MA1 I'LLERAL 7, UNDA11011 IL D 611 - ,ILL LIMITS OF CLEARING SILT FEN ACVOF`7­`��_-_ EX. Cn!I'T-RCfAL-- CE E B TO! R SIDEWI SHALL BE REPLACED SILT FENCE ADJACENT ITO ARE IF DAMAGED BY STORM HYDRANT SHALL BE REPLACED STRUCTURE INSTALLATION ENTRA --- . . .... F; DAMAGED=B"NSTAI�AIONI S-0 T- P-,_ 70Y!),R1'vW \L 7= CONTACTOR TO SUPPLY P vg x IIWATER SOURCE TO CLEAN CONSTRUCTION VEHICLES X. ------ BEFORE THEY ENTER THE RIGHT',OF-WAY. WASH WATER TO BE DIRECTED TO ST -1 _4' CONTOURS PER ALBEMARLE COUNTY AND NOT\INTO THE CIS INS PANTOOS DRIVE. BEYOND RIGHT-OF-WAY WESTBOUND RIGHT TURN LANE T 'T Pill (SYSTEM, /A STORMWATER MANAGEMENT Z i, (4) 36- HOPE PIPES @ 86 LF EACH' TOTAL LENGTH 44' EX VARIABLE WIDTH SWM FACILITY EASEMENT IDS PC C) z E - TIT � � E- (2) Ze .4 D4 U) w E- P, E- E- C) co DOM. PROJECT NO:15,003C INDEXTITLE: SW5 SHEET NO: 5 OF 10 0 20 40 60 80 DATE: 2/06/17 PRE DEVELOPMENT• V DRAINAGE AREA B A = 0.44 Ac CN = 74 ul [Htom.•Tc = 5 min F 0 T H 0 p \'ff� I \ \ �\ t \ \\ \ \ � \ ' m o°i �,� � Inc PRE DEVELOPMENT (D DRAINAGE AREA A LF. RS Li, N.. 33028 A = 0.28 Ac 11/8/17 71 F CN S ON AL Te 5 min 40, F D z jl� 4IR0 �-4 2 N� o -2 41 7 E F �p 0- \ \ \ -_ � / (2 Tql UTRPr ,� _..- ` gyp' ? SSMH#E3 4t* zo 41 ��/ "'), "' o 41 /11 57 iv �9"' 7 - y�?. Nye \ w._ '1 _ P19 \ t SIGN 0SOB 7 3�6 S4 0 'o' 4T "o Z Qg- Z"p 00 z E- 7 .28 0 POST DEVELOPMENT Q 5: E-paU \\ j \ �F�q. DRAINAGE AREA UN—DETAINED FOREST w U 41 al J1. 1 A — 0.29 Ac CN — 55 0 CD Tc 5 min w E - POST DEVELOPMENT w E - DRAINAGE AREA 2 / 5� �� \\ \� UN—DETAINED 0.06 Ac �:D E- A E - CN = 6 1 0 M To 5 nzin POST DEVELOPMENT I P, i / / \ \ \ Fx / DRAINAGE AREA DETAINED A = 0.48 Ac ' \ � � _L L- i �, / // / , \. I _ / i C PRE DEVELOPMENT OVERALL DRAUTAGE AREAS "o, 'N — 94 DOM. PROJECT NO:15.003C X /� '\\\ \�\ \ �, Te 5 min INDEXTITLE: / / /� % / i \ \\ / \ / /POST DEVELOPMENT SW6 DRAINAGE AREA I UN—DETAINED A = 0.18 Ac SHEET NO: 6 of 10 SCALE: 1"=20' SCALE: I"=20' CN 71 POST DEVELOPMENT OVERALL DRAINAGE AREAS 20 0 20 40 60 Tc — 5 min, 150 0 20 40 60 —E: 2/06/17 w ' o N N PRE DEVELOPMENT DRAINAGE AREAHZ2 C—FOREST F C (D A = 0.29 A o (DNo 4 CN Te = 5 7n0l7v E w 0 C) PRE DEVELOPMENT• V DRAINAGE AREA B A = 0.44 Ac CN = 74 ul [Htom.•Tc = 5 min F 0 T H 0 p \'ff� I \ \ �\ t \ \\ \ \ � \ ' m o°i �,� � Inc PRE DEVELOPMENT (D DRAINAGE AREA A LF. RS Li, N.. 33028 A = 0.28 Ac 11/8/17 71 F CN S ON AL Te 5 min 40, F D z jl� 4IR0 �-4 2 N� o -2 41 7 E F �p 0- \ \ \ -_ � / (2 Tql UTRPr ,� _..- ` gyp' ? SSMH#E3 4t* zo 41 ��/ "'), "' o 41 /11 57 iv �9"' 7 - y�?. Nye \ w._ '1 _ P19 \ t SIGN 0SOB 7 3�6 S4 0 'o' 4T "o Z Qg- Z"p 00 z E- 7 .28 0 POST DEVELOPMENT Q 5: E-paU \\ j \ �F�q. DRAINAGE AREA UN—DETAINED FOREST w U 41 al J1. 1 A — 0.29 Ac CN — 55 0 CD Tc 5 min w E - POST DEVELOPMENT w E - DRAINAGE AREA 2 / 5� �� \\ \� UN—DETAINED 0.06 Ac �:D E- A E - CN = 6 1 0 M To 5 nzin POST DEVELOPMENT I P, i / / \ \ \ Fx / DRAINAGE AREA DETAINED A = 0.48 Ac ' \ � � _L L- i �, / // / , \. I _ / i C PRE DEVELOPMENT OVERALL DRAUTAGE AREAS "o, 'N — 94 DOM. PROJECT NO:15.003C X /� '\\\ \�\ \ �, Te 5 min INDEXTITLE: / / /� % / i \ \\ / \ / /POST DEVELOPMENT SW6 DRAINAGE AREA I UN—DETAINED A = 0.18 Ac SHEET NO: 6 of 10 SCALE: 1"=20' SCALE: I"=20' CN 71 POST DEVELOPMENT OVERALL DRAINAGE AREAS 20 0 20 40 60 Tc — 5 min, 150 0 20 40 60 —E: 2/06/17 0 •W cvm�E ,s nRvv4 E' 1 f 'O ., Q LLJ \ / EB TOTAL AREA o� \ PRE DEVELOPMENT\, \ \ \ \ \ \\, I m 01g3 s "Fes Ac A ` \\ A — 1.01 Ac CN = 68 F �� \\\ \\ \,\• \\\ \\ \ o 0 `\ Tc = .5 ?n277. \ \ \ \\ \ \\\ \ •.\ m1 THop \\ \\ \ \ \• Lic. LFM RS No. 33028 11/8/17 w` I �•+ •\` \ \ // \ / \ �''\ \ a2 \ \ � / ,+ i/ I SSS QG�} o / � �. .r `� \ '• \ \ •\ \ . \\ \ \ --/ , / c�o� - , � \ \ \ � / , ZONAL E \ m \ ,o Is, a s SA . Fla-=1055 % \ _ v �s \\\ \\• \\ \ \ / M \ �M�9 '� M of \ o 4__ M /I / `'�o�•=, © \ S �2 \ \ \ \' \ ... � --- '- _ _._ w i � Tpo� pF Srp J � \� �o ..� �m vz C fF?o'o� o w GSGI�"3/ O _ a c � o _ �Hp�F oR �� \ -:..., � S �� ` 1, -`�- --- _,-- - - - ✓ \ '8p A AOO \ `Y�r' � � za k o R ti \ /N lg •oRpppsFo R •" f? M -2 \ -�--IS ,z 55% B ow 10�IC2ST FAY - i 4f F k NcC 'N \cs6 \ F'PC % VIII o��p psFo SON I FTO�� 9p AFR , ppp A� ` \ -_ \ 4frz) W 1I E+98 �7 EB POST 2y DEVELOPMENT — 0 , - _ / o W W w DETAINED \ \ l A - 0.48 Ac T c CN = .94 \ � — 5 min v EB POST DEVELOPMENT w �/ El UN—DETAINED = o \ �z z / \ \ \ I co A = 0.53 Ac m z a / 61 I o W a3 o_ Tc = 5 in w m ~ a (INCLUDES AREA ON w o o = SOUTH SIDE OF THE �Ilf o - - -- DOM. PROJECT NO: 15.003C / \ / SITE) INDEX TITLE: PRE DEVELOPMENT ENERGY S 7 / BALAI�ICE DRAINAGE AREAS SCALE: 1 E: - ___ _ SHEET NO: 7 of 10 "=20' -......... _ POST DEVELOPMEI,,TT ETJERGY BALANCE DRAI('iAGE AREAS P\ scaLE:1'=20 -_ \ / 20 0 20 40 60 20 0 20 40 60 DATE: 206/17 . S�--CG-6 REVERSED CURB & GUTTER SCALE STONE CONSTRUCTION 70' Min ACCESS Y SM 2A ASPHALT TOP EXISTING 2� ZX PAVEMENT EXISTING GRADE FALTER CLOTH \_6" MIN. 21A AGGREGATE BASE WET PROFILE STONE CONSTRUCTION ACCESS EXISTING 22_7 2% 12'* Min --`—% PAVEMENT I _ --POSITIVE DRAINAGE *MUST EXTEND FULL Y� TO SEDIMENT WIDTH OF INGRESS TRAPPING DEVICE AND EGRESS OPERATION PLAN 12" MinOLIVEDRAINAGE TO SEDIMENT TRAPPING DEVICE z•',.> , FILTER CLOTH �c SECTION A -A NOTE: Aminimum water tap of 1" must be installed with a minimum I" bollco 1, shutoff valve supplying a wash hose with a diameter of 1.5" for adequate constant pressure. Wo'sh waster roust be carried away from the paved construction entrance to on approved settling area to remove sediment. All sediment shall be prevented from entering storm drains, ditches, or watercourses. l 4 �1 CONSTRUCTION ENTRANCE DETAIL (CE) SW8 NOP TO SCALE '1 TREE PROTECTION FENCING DETAIL �S'IV8 NOT TO SCALE NCE CONSTRUCTION OF A SILT FENCE (WITHOUT ]VIRE SUPPORT) 2. EXCAVATE A 4" x 4" TRENCH 1. SET THE STAKES UPSLOPE ALONG THE LINE OF STAKES. MAX F �i�\i i\moi 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. 0 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. sHLLI tLUN INV IALLAHUN (PERSPECTIVE VIEW) 3" A nMAX A t N� B POINT A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) 5 ' SILT FENCE DETAIL (SF)_ �W H NOT TO SCALE WIRE SCREEN CONCRETE BLOCK T'NNI Y••• '� ti �i ✓ YY �—GRAVEL FILTER WIRE SCREEN RUNOFF WATERFILTERED WATER WITH SEDIMENT OVERFLOWr-v =11I III-III-11l=1II-III-11 `"> "A DROP INLET SEDIMENT WITH GRATE SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED, AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING AROUND THE STRUCTURE. *GRAVEL SHALL BE VDOT #3, #357, OR #5 COARSE AGGREGATE. tiBLOCh AND GRAVEL DROP INLET PROTECTION (IP) StiVH NOT TO SCALE 44 ,— Compaeted Soil 1 U MIN Fos -I El 11E 1l I E 111-1 1-111=111=I I -111 f-4.5' MIN --j 3 'JENIPORARY DIVERSION DIKE DD SW8, rear TO SCALE TEMPORARY SEDIMENT TRAP CALCULATIONS WEIR DRAINAGE WET WET DRY DRY No, A B C H (ft.) Z (ft.) LENGTH (ft.) AREA (Acres) VOL. (REQ.) D1 (ft.) VOL. (PROV.) VOL. (REQ.) D2 (ft.) VOL. (PROV.) (BY) (CY) (Cy) (Cy) 1 363.50 366.50 368 3.0 2.5 6.0 0.46 31.5 3.0 32.2 31.5 1.5 33.3 ORIGINAL J_ GROUND EL = C I ELEVATION T H DRY VOLUME D2 1RIGINAt EL = B GROUND ELEVATION D1 FILTER CLOTH **COARSE CLASS I EL = A AGGREGATE RIPRAP CROSS SECTION OF OUTLET -NOTE: SEDIIMENT TRAP SHALL NOT BE REMOVED BEFORE COUNTY INSPECTOR HAS DEEMED STABILIZED. CLASS I RIPRAP LENGTH DIVERSION /DIKE **C0ARSEE� AGGREGATE /\ FILTER CLOTH EXCAVATED AREA OUTLET (PERSPECTIVE VIEW) .*COARSE AGGREGATE SHALL BE VDOT #3, #357, OR #5. V TBWORARY SEDIMENT TRAP DETAIL S>` 8 NOT 0 LE � oN=- C �oVK E c ^s E c: -U s p 4 e`' Lic. No. 33028 11/8/17 O � � Q H H �:D W O Q z W O w E— fry i/D � W W O �:D U) � Q z O zW Z Q Z � Q4 ~ F- W LU m DOM. PROJECT NO:15.003 INDEX TITLE: S8 SHEET NO: 6 OF 10 DATE: 2/06/17 BACKFILL STORM SEWER PER VDOT REQUIREMENTS 15" HDPE INV - OUTFALL = 365.9' 2" CHOKER ST RETE CURB 2OCK D##50 = 8" ## '83 O ARSE5A0GR5�G'P,TE IN 2' SOD STRIP NUIE: ALL IEMY'UNAKY bLNMJ, JWALG A- L SPREADER DITCH MUST RECEIVE TEMPORARY SEEDING IMMEDIATELY AFTER INSTALLATION II II SHEET FLOW C PLAN VIEW 2" GA 6" THICK TOP TOP OF STONE EL. = 65.5' PLUNGE POOL 2' SOD STRIP RIVER ROCK D50 = 8" 65-1 SHEET FLOW TO PL 34 s 64 s 8" THICK BOTTOM -6,5 " '' NOTE: WRAP SIDES OF EXCAVATED POOL WITH FILTER SECTION VIEW C -C FABRIC. NO FILTER FABRIC ON BOTTOM 1 LEVEL SPREADER _ LS SW9 NO[ TO SCALE A NOTE' STRUCTURE TO BE BUILT IN ACCORDANCE WITH VDOT STD. JB -1 EXCEPT AS MODIFIED DIMENSIONALLY LSBB-13SW9 NOO SCALE SCALE SWM COMPLIANCE CHART CHANNEL PROTECTION SUMMARY ENERGY BALANCE METHOD Qpost L= Qpre (pre Val/post Vol) (IF) APPROXIMATE LOCATION OF WATERMAIN. CONTRACTOR TO DIG TEST PIT TO DETERMINE DEPTH DISTURBED AREA USED FOR ENERGY BALANCE SITE AREA = 1.01 AC APPROXIMATE LOCATION OF UNDER GROUND TELEPHONE. Qpre(iyr) = 1.06 cfs CONTRACTOR TO DIG TEST PIT TO DETERMINE DEPTH Qpost(1yr) = 0.41 cfs pre Vol(1yr) = 2,225 cuff post Voi(1yr) = 4,606 cuft IF = 0.9 for less than 1 acre of disturbed area LS 1 2 36 3gO Qpost allowable = 1.06 csf (2,225 cuft/4,606 cuft) (0.9) = 0.46 cfs 39 _ o� M 0.41 cfs L= 0.46 cfs SEE H&H CALCS FOR SUMMARY & HYDROGRAPHS PROPOSED GRADE FLOOD PROTECTION SUMMARY Qpre(2yr) = 1.73 cfs Qpre(10yr) = 3.89 cfs P - 37 EXISTING GRADE Qpost(2yr) = 1.02 cfs -_ Qpost(10yr) = 3.82 cfs OK _ t� 370 37C -320- -----_ 4x36_328' -HDPE - _-"- 36� - i- - - --- 365 .10 YR WSE O. 3602' - - -- 12 0"Wx6 0°H WIER 368 - 360 36 M 20 ORIFICE -3661 M o35- 355 35 - - - -- 350 10+00 11+00 5_'1 36" STORAGE PROFILE \ SW9 1 = IC HORIZ, 1" = 30' VERT TEST PIT NOTE: CONTRACTOR TO DIG TEST PITS 30 DAYS PRIOR TO CONSTRUCTION OPERATIONS IN THAT LOCATION AND NOTIFY ENGINEER WITH ANY DISCREPANCIES. CONTRACTOR TO OBTAIN THE PROPER PERMITS PRIOR TO RELOCATION OF QUASI -PUBLIC UTILITIES SUCH AS ELECTRIC AND TELEPHONE LINES, POLES, PEDESTALS, ETC. IP EL.=3YLUU 0"W WEIR WALL EL. =370.00' -YEAR WSE EL.=369.75' -YEAR WSE EL. = 368.81' YEAR WSE EL. = 368.53' B .0"W x 6.0"H WEIR EL = 368.50' ASH RACK OCR ELEV = 366.10' 11 HDPE INV. OUT = 366.0' 3" NV. IN = 366.10' 2' MH FRAME 15" HDPE INV. OCi'1LEVEL 10 / AND COVER 20.23' 9 1.0% TO LEVEL POP -371.0 SPREADER Ju ty 3 PAN VIEW JUNCTION BOX STRUCTURE 2 _.- - -- SWC NO SCALE UFICE ELEV = 366.10' x 6.0"H WEIR EL = 368.50' TALL ELEV = 370.0 3 I -DI-7 GRATE TOP = 371.0' E PIPE __�36" HDPE INV. N=366.10' p pn E 0mv�° � Novv E _ C - U 0 W ;LES, yy as d p e� e ?HAEL F. MYT Lic. No. 33028 11/8/17 Z o O � MH TOP DI -7 GRATE TOP U U TOP EL.=371.00' 48.0"W WEIR WALL EL = 370.00' z 71 ILTI 10 -YEAR WSE EL.=369.75' z 2 -YEAR WSE EL. = 368.81' w �- z a �� - -......._ E -I �_ Q .... - - 1 -YEAR WSE EL:3,66.10' 68.53' F pa a - W 12.0"W x 6.0'H EL = 368.50' w �_ p_ 86 LF (4)36" HIPE C 1.2% [ E O W 22.23 LF - 15" HDPE TRASH m 1-4 OUTLET PIPE C 1.0% TO RACK FLOOR ELEV = U) a LEVEL SPREADER 54 W U a 36" PIPE INV = 366.10' Q Q 2.0" ORIFICE = 366.10' Q Z I/I C SECTION A -A wLO U) \.,S>� NOT TO SCALE '~✓ w w 0 DOM. PROJECT NO:15.003 INDEX TITLE: S ITV V 9 SHEET NO: 9 OF 10 DATE: 2/06/17 B" moi. 4' 2.0" 0 2.0"W WEIR 8„ 4' 4' 36" HD ®1.2% 8„ 3 PAN VIEW JUNCTION BOX STRUCTURE 2 _.- - -- SWC NO SCALE UFICE ELEV = 366.10' x 6.0"H WEIR EL = 368.50' TALL ELEV = 370.0 3 I -DI-7 GRATE TOP = 371.0' E PIPE __�36" HDPE INV. N=366.10' p pn E 0mv�° � Novv E _ C - U 0 W ;LES, yy as d p e� e ?HAEL F. MYT Lic. No. 33028 11/8/17 Z o O � MH TOP DI -7 GRATE TOP U U TOP EL.=371.00' 48.0"W WEIR WALL EL = 370.00' z 71 ILTI 10 -YEAR WSE EL.=369.75' z 2 -YEAR WSE EL. = 368.81' w �- z a �� - -......._ E -I �_ Q .... - - 1 -YEAR WSE EL:3,66.10' 68.53' F pa a - W 12.0"W x 6.0'H EL = 368.50' w �_ p_ 86 LF (4)36" HIPE C 1.2% [ E O W 22.23 LF - 15" HDPE TRASH m 1-4 OUTLET PIPE C 1.0% TO RACK FLOOR ELEV = U) a LEVEL SPREADER 54 W U a 36" PIPE INV = 366.10' Q Q 2.0" ORIFICE = 366.10' Q Z I/I C SECTION A -A wLO U) \.,S>� NOT TO SCALE '~✓ w w 0 DOM. PROJECT NO:15.003 INDEX TITLE: S ITV V 9 SHEET NO: 9 OF 10 DATE: 2/06/17 STORM DRAIN CALCULATIONS FROM STR-1 TO STR-2 LD -229 CALCULATION STORM INLET CALCULATIONS FOR STRUCTURE 2 - 1�/99� 1�1yIIIp1MM.11111 n.■,�lI1 ®1�g®®�nllri9i all soli ®M11""'-�;"�� �o�.��t14'iii'e �iirt".ro�■Qaii ®��t �YR�l1sR'"�o9iY.d io r 1 ! 1 LD -204 CALCULATION RESULTING SPREAD FOR THE 10 -YR FLOW DEPTH IS 18' FOLLOWING THE SHALLOWEST SLOPE AT 2.09. SWM COMPLIANCE CHART CHANNEL PROTECTION SUMMARY ENERGY BALANCE METHOD Qpost L= Qpre (pre Vol/post Vol) (IF) DISTURBED AREA USED FOR ENERGY BALANCE SITE AREA = 1.01 AC Qpre(lyr) = 1.06 cfs Qpost(lyr) = 0.41 cfs pre Vol(tyr) = 2,225 cult post Vol(lyr) = 4,606 cuft IF = 0.9 for less than 1 acre of disturbed area Qpost allowable = 1.06 csf (2,225 cuft/4,606 cult) (0.9) = 0.46 cfs 0.41 cfs L= 0.46 cfs SEE H&H CALCS FOR SUMMARY & HYDROGRAPHS FLOOD PROTECTION SUMMARY Qpre(2yr) = 1.73 cfs Qpre(10yr) = 3.89 cfs Qpost(2yr) = 1.02 cfs / K Qpost(t0yr) = 3.82 cfs V Qr\ TO REVERSE -FLOW CURB'\ D.A. B D.A. C D.A. D D.A. E AREA CHECK 0 E - Q.00 . rp 04 0.00 -..:: _ '-'-OK. E 0 W 0'29 '.Managed Turf (acres) --disturbed, graded 025 OK. 0.00 pi 00 047 4 OK. 01i 0 00 G Q00 .- 0 Eli 9.70` " 011 111111111 0.00 OK. OK OK. OK. OK. OK. i ( I 71 J IIi STORM INLET CALCULATIONS FOR STRUCTURE 2 - 1�/99� 1�1yIIIp1MM.11111 n.■,�lI1 ®1�g®®�nllri9i all soli ®M11""'-�;"�� �o�.��t14'iii'e �iirt".ro�■Qaii ®��t �YR�l1sR'"�o9iY.d io r 1 ! 1 LD -204 CALCULATION RESULTING SPREAD FOR THE 10 -YR FLOW DEPTH IS 18' FOLLOWING THE SHALLOWEST SLOPE AT 2.09. SWM COMPLIANCE CHART CHANNEL PROTECTION SUMMARY ENERGY BALANCE METHOD Qpost L= Qpre (pre Vol/post Vol) (IF) DISTURBED AREA USED FOR ENERGY BALANCE SITE AREA = 1.01 AC Qpre(lyr) = 1.06 cfs Qpost(lyr) = 0.41 cfs pre Vol(tyr) = 2,225 cult post Vol(lyr) = 4,606 cuft IF = 0.9 for less than 1 acre of disturbed area Qpost allowable = 1.06 csf (2,225 cuft/4,606 cult) (0.9) = 0.46 cfs 0.41 cfs L= 0.46 cfs SEE H&H CALCS FOR SUMMARY & HYDROGRAPHS FLOOD PROTECTION SUMMARY Qpre(2yr) = 1.73 cfs Qpre(10yr) = 3.89 cfs Qpost(2yr) = 1.02 cfs / K Qpost(t0yr) = 3.82 cfs V Qr\ TO REVERSE -FLOW CURB'\ I 10 YR INLET (50o CLOGGED) SPREAD DIAGRAM SW101 / NO SCALE 7 Fi i 'n.. 3 tF VL) Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ac) IMPERVIOUS COVER (ac) IMPERVIOUS COVER TREATED (ac) ( MANAGED TURF AREA (ac) MANAGED TURF AREA TREATED (ac) AREA CHECK D.A. A D.A. B D.A. C D.A. D D.A. E AREA CHECK 0 E - Q.00 . rp 04 0.00 -..:: _ '-'-OK. E 0 W 0'29 '.Managed Turf (acres) --disturbed, graded 025 OK. 0.00 pi 00 047 4 OK. 4 0p; 0 00 G Q00 .- 000 9.70` " OK. 0.00 OK. OK OK. OK. OK. OK. i ( I 71 J IIi t ! I 10 YR INLET (50o CLOGGED) SPREAD DIAGRAM SW101 / NO SCALE 7 Fi i 'n.. 3 tF VL) Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ac) IMPERVIOUS COVER (ac) IMPERVIOUS COVER TREATED (ac) ( MANAGED TURF AREA (ac) MANAGED TURF AREA TREATED (ac) AREA CHECK D.A. A D.A. B D.A. C D.A. D D.A. E AREA CHECK 0 E - Q.00 . rp 04 0.00 -..:: _ '-'-OK. E 0 W 0'29 '.Managed Turf (acres) --disturbed, graded 025 OK. 0.00 pi 00 047 4 OK. 4 0p; 0 00 G Q00 .- 000 9.70` " OK. 0.00 OK. OK OK. OK. OK. OK. Site Treatment Volume (ft3) R4'" Runoff Reduction Volume and TP By Drainage Area E RUNOFF REDUCTION VOLUME ACHIEVED (fir) 1 TP LOAD AVAILABLE FOR REMOVAL (Ib/y) TP LOAD REDUCTION ACHIEVED (III TP LOAD REMAINING (Ib/yr) I NITROGEN LOAD REDUCTION ACHIEVED (IbJyr) `-0,003 -' 0.66 Q-06:` Q p0 Q.O,Q 0.00 Total Phosphorus LINEAR PROJECT: FINAL POST -DEVELOPMENT TP LOAD (IbJyr)5` ' i TP LOAD REDUCTION REQUIRED (III5' - TP LOAD REDUCTION ACHIEVED (ib/yr)D TP LOADREMAINING (Ib/yr)I.:m5: 9 REMAINING TP LOAD REDUCTION REQUIRED (Ib/yr): 0.55 PHOSPHORUS REDUCTION TO BE MET BY THE PURCHASE OF OFFSITE NUTRIENT CREDITS Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (Ib/yr) 8 24 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0 fl9 REMAINING POST -DEVELOPMENT NITROGEN LOAD (Ib/yr) - $29.__ EASEMENT CROSS SECTION EXHIBIT PLAN VIEW (E -E) --------- - SWI i I _ r Y E EME'JT 70 10+00 390 385 380 375 370 365 360 355 3 EASEMENT CROSS SECTION EXHIBIT PROFILE SW10 c - 30' VERT, C -1-0' HORIZ Project Name Meade kujiders Office guildini 9/13/2017 ._.- Linear Development Project? NO Site Information Post -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) Pre-ReDevelopment Land Cover (acres) A Soils B Soils D.A. B D.A. C D.A. D D.A. E TOTAL 0 E roteded forest/open sace or reforested - protected forest/open sace or reforested 029 v� E 0 W 0'29 '.Managed Turf (acres) --disturbed, graded 025 .- 0.00 pi 00 047 4 - 049 •� Impervious Cover (acres) 0.23 o.00 o;oo I NITROGEN LOAD REDUCTION ACHIEVED (IbJyr) `-0,003 -' 0.66 Q-06:` Q p0 Q.O,Q 0.00 Total Phosphorus LINEAR PROJECT: FINAL POST -DEVELOPMENT TP LOAD (IbJyr)5` ' i TP LOAD REDUCTION REQUIRED (III5' - TP LOAD REDUCTION ACHIEVED (ib/yr)D TP LOADREMAINING (Ib/yr)I.:m5: 9 REMAINING TP LOAD REDUCTION REQUIRED (Ib/yr): 0.55 PHOSPHORUS REDUCTION TO BE MET BY THE PURCHASE OF OFFSITE NUTRIENT CREDITS Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (Ib/yr) 8 24 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0 fl9 REMAINING POST -DEVELOPMENT NITROGEN LOAD (Ib/yr) - $29.__ EASEMENT CROSS SECTION EXHIBIT PLAN VIEW (E -E) --------- - SWI i I _ r Y E EME'JT 70 10+00 390 385 380 375 370 365 360 355 3 EASEMENT CROSS SECTION EXHIBIT PROFILE SW10 c - 30' VERT, C -1-0' HORIZ Project Name Meade kujiders Office guildini 9/13/2017 ._.- Linear Development Project? NO Site Information Post -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) Pre-ReDevelopment Land Cover (acres) A Soils B Soils C soils D Soils Totals Forest/Open Space (acres) -- undisturbed 0 E roteded forest/open sace or reforested - protected forest/open sace or reforested 029 v� E 0 W 0'29 '.Managed Turf (acres) --disturbed, graded 025 , 025 Imperious Cover(acres) for yards or other turf to be 0.49 047 4 - 049 •� Impervious Cover (acres) 0.23 !Post-Develooment Land Cover (acres) THE WATER QUALITY PORTION OF THE SITE WILL BE SATISFIED BY SHEETFLOW TO A CONSERVATION AREA FOR B SOILS. THE NUTRIENT CREDITS WILL COME FROM A NUTRIENT BANK WHICH IS IN OR ADJACENT TO OUR (HUC) HYDROLOGIC UNIT CODE. WATER QUANTITY REQUIREMENTS WILL BE PROVIDED BY PROVIDING THE 1 -NR ENERGY BALANCE METHOD. A Soils B Sods C Sods D Soils Totals {forest/Open Space (acres) - undisturbed -, 0 E roteded forest/open sace or reforested - 0.29 ;Managed Turf(acres)--disturbed, graded E 0 W for ardsorotherturftobe 025 , 025 Imperious Cover(acres) : 047 047 4 e`' THE WATER QUALITY PORTION OF THE SITE WILL BE SATISFIED BY SHEETFLOW TO A CONSERVATION AREA FOR B SOILS. THE NUTRIENT CREDITS WILL COME FROM A NUTRIENT BANK WHICH IS IN OR ADJACENT TO OUR (HUC) HYDROLOGIC UNIT CODE. WATER QUANTITY REQUIREMENTS WILL BE PROVIDED BY PROVIDING THE 1 -NR ENERGY BALANCE METHOD. 'HAEL F. MY] Lia. No. 33028 11/8/17 _ I I I I ILL z z O_ E- E - `4 -E -1W E W W C-) E- U ti N W �D C_n x OW Q r:) � qz Lu _� co DOM. PROJECT NO:15.003 INDEX TITLE: At O SHEET NO: 10 OF 10 DATE: 2/06/17 U � E •L 2§"-2, o 0 0 E E u E 0 W 4 e`' 'HAEL F. MY] Lia. No. 33028 11/8/17 _ I I I I ILL z z O_ E- E - `4 -E -1W E W W C-) E- U ti N W �D C_n x OW Q r:) � qz Lu _� co DOM. PROJECT NO:15.003 INDEX TITLE: At O SHEET NO: 10 OF 10 DATE: 2/06/17