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HomeMy WebLinkAboutWPO202100001 Plan - VSMP 2021-03-11LEGEND EXISTING NEW LJ 10 10 1.00' ---310 -- 10 310 17 0 311.5 x ) 0 311.5TCx 57X 311.5 TW x 57 1 311.5BWx 57X A -I\ /FN Ed �I .LL.LL.y.LL.LL.LL.LL. 0 0 X 0 X m m RD - RD - q OF_�01 S W 0 ®wv GAS S W 0 WV GAS DESCRIPTION BENCHMARK SITE PROPERTY LINE ADJACENT PROPERTY LINE VACATED PROPERTY LINE BUILDING SETBACK PARKING SETBACK ACCESS EASEMENT PARKING COUNT DIMENIONS GRADING EASEMENT INDEX CONTOUR INTERVAL CONTOUR SPOT EVELVATION TOP OF CURB ELEVATION TOP OF WALL ELEVATION BOTTOM OF WALL ELEVATION RETAINING WALL STAIRS BUILDING ROAD -EDGE OF PAVEMENT ROAD- CENTERLINE ROAD -FRONT OF CURB ROAD BACK OF CURB CG-2 STANDARD 6" CURB CG-6 STANDARD 6" CURB AND GUTTER CG-12 STANDARD ACCESS RAMP SIDEWALK BIKE PARKING PARKING SURFACE CROSSWALK HANDICAP ACCESSIBLE AISLE HANDICAP PARKING CONCRETE/PAVEMENT-SIDEWALK RIPRAP ASPHALT GRASS EC-3 MATTING EC-2 MATTING WETLAND TREELINE FENCE STREAM UTILITY EASEMENT UTILITY POLE LIGHT POLE OVERHEAD UTILITY OVERHEAD UTILITY GUY MANHOLE STORM LINE ROOF DRAIN DRAIN INLET DRAINAGE EASEMENT STORM DRAINAGE EASEMENT SEWER LINE SANITARY EASEMENT WATER LINE WATER METER WATER VALVE AND BOX FIRE HYDRANT WATER EASEMENT GAS LINE GENERAL CONSTRUCTION NOTES 1. Prior to any construction within any existing right-of-way, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transit (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 the 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 (horizontle:vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to be acheived. 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 othrewise 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). NOTES PER ZMA201900002 1) Development of TMP 61-154B shall follow the approved Code of Development as part of ZMA201900001. 2) Section 4.16 of the Albemarle County Zoning Ordinance shall apply to all recreational facilities. 3) Signange shall be provided to prohibit vehicular traffic on private street in Block 2, except for emergency vehicles; or, bollards shall be installed. 4) Notwithstanding anything herein to the contrary, all non-residential uses shall be limited in height to one (1) story, or twenty-five (25) feet. Such uses shall also be limited to a building footprint of six thousand (6,000) square feet. 5) Porches, eaves and awnings shall be considered part of the structure and shall not extend closer to the street than the required setbacks. 6) Minimum building separation shall be required per Section 4.11 of the Zoning Ordinance. 7) Any primary residential structures in Block 1 shall face Belvedere Boulevard. 8) The applicable setbacks for Block 2 shall be measured from the edge of Amenity Area D. 9) Pursuant to Section 32.7.9.7, the parking areas along the northern and southeastern boundaries of the subject property are required to be screened. In addition to Section 32.7.9.7(b), see the Code of Development for appropriate screening options. 10)Dumpsters and Dumpster Pads on the Property shall be screened pursuant to Section 4.12.19. 11)The Applicant shall be required to provide onsite treatment of 25% of the required stormwater treatment. Such techniques of treatment shall include pervious pavers, micro bioretention, or other approved measures. 12)15% of the total residential dwelling units within the project shall be Affordable Dwelling Units (the "15% Affordable Housing Requirement"). The 15% Affordable Housing Requirement may be met through a variety of housing types, including but not limited to, for -sale units or rental units. GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am 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 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 Ibs/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 approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repaired immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17-207B) OWNER Windmill Ventures LLC 535 Foxdale Lane Charlottesville, VA 22903 DEVELOPER 999 Rio Road Development, LLC 912 E High Street Charlottesville, VA 22902 (434) 218-0513 ZONING NMD - Neighborhood Model District ZMA201900001 approved on March 4, 2020 Overlays: Entrance Corridor, Airport Impact Area Initial site plan SDP202000045 approved on 7/22/2020 DISTRICT Rio SOURCE OF TITLE DB 4505 P 218 SOURCE OF BOUNDARY AND TOPOGRAPHY Boundary and topographic information provided by Meridian Planning Group, LLC, September 25, 2020. Supplemental planimetric and topographic information for adjoining parcels provided by Albemarle County GIS . BENCHMARK Datum for topography is NAVD 1988 Visually verified by Shimp Engineering Staff on 12/23/2020 FLOODZONE According to FEMA Flood Insurance Rate Map, effective date February 4, 2005 (Community Panel 51003CO279D), this property is not located within a Zone AE 100-year floodplain. RESERVOIR WATERSHED This site is within the Meadow Creek Watershed. This site is a watershed of a public water supply. LAND USE SCHEDULE EXISTING AREA SF AC % Building 3,956 0.09 4.2% Pavement/Concrete 571 0.01 0.6% Imp. Inside Property 4,527 0.10 4.9% Managed Turf Inside Property 66,047 1.52 70.9% Woods Inside Property 12,983 0.30 13.9% Impervious in ROW 1,290 0.03 1.4% Managed Turf in ROW 6230 0.14 6.7% Woods in ROW 2,109 0.05 2.3% Total Inside Property 83,557 1.92 89.7% Total w/ ROW 93,186 2.14 100.0% PROPOSED Area SF AC % Building 18,072 0.41 19.4% Pavement/Concrete 30,657 0.70 32.9% Imp. Inside Property 48,730 1.12 52.3% Managed Turf Inside Property 34,827 0.80 37.4% Impervious in ROW 4,652 0.11 5.0% Managed Turf in ROW 4,977 0.11 5.3% Total Inside Property 83,557 1.92 89.7% Total w/ ROW 93,186 2.14 100.0% STEEP SLOPES Steep slopes (managed & preserved) are not present on this property. GENERAL NOTES 1. The information and data shown or indicated with respect to the existing underground utilities at or contiguous to the site are based on information and data furnished to the owner and engineer by the owners of such underground facilities or others. The owner or engineer shall not be responsible for the accuracy or completeness of such information or data. The contractor shall have full responsibility for confirming the accuracy of the data, for locating all underground utilities, for coordination of the work with owners of such underground utilities during construction, for the safety and protection thereof and repairing any damage thereto resulting from the work. All of these conditions shall be met at no additional cost to the owner. The contractor shall contact "Miss Utilities" of Virginia at 1-800-552-7001 prior to the start of work. 2. When working adjacent to existing structures, poles, etc., the contractor shall use whatever methods that are necessary to protect structures from damage. Replacement of damaged structures shall be at the contractor's expense. 3. The contractor shall be responsible for protecting all existing site structures from damage and coordinating work so that the owner can make necessary arrangements to modify/protect existing structures from damages. 4. The contractor shall be responsible for notifying all utility owners, adjacent land owners whose property may be impacted and the Virginia Department of Transportation prior to completing any off -site work. 5. Contractor shall notify and coordinate all work involving existing utilities with utility owners, at least 72 hours prior to the start of construction. 6. Contractor shall immediately report any discrepancies between existing conditions and contract documents to the owner and engineer. 7. Contractor shall submit for the approval of the owner submittals of all specified materials listed in the plans, to include shop drawings, manufacturer's specifications and laboratory reports. the owner's approval of submittals will be general and will not relieve the the contractor from the responsibility of adherence to the contract and for any error that may exist. 8. All bare areas shall be scarified, limed, fertilized, seeded and mulched. 9. All trees, saplings, brush, etc. shall be removed from within the right of way and the drainage easements. 10. Visibility of all mechanical equipment from the Entrance Corridor shall be eliminated. 11. Retaining walls require separate building permits. 12.All water service lines, sanitary laterals, and sprinkler lines must be visually inspected by the Albemarle County Building Department from the main to the structure. VSMP PLAN 999 RIO ROAD WP0202100001 TAX MAP 61, PARCEL 154B ALBEMARLE COUNTY, VIRGINIA VICINITY MAP SCALE : 1"=1000' Kangaroo Express Q Auto Doct• Covenant Church 4 .,r BELVEDERE BLVD Rio Rd E, ttesvllle, VA... o SITE City Church (,Central) 7 °% '9p ' P Charlottesville iM T echn(cal Center c }I i c Map provided by Google.com SHEET INDEX (11 TOTAL) C1 COVER SHEET C2 EXISTING CONDITIONS & DEMO C3 UTILITY PLAN C4 GRADING PLAN C5 STORM PROFILES C6 STORM SECTIONS & DETAILS C7 ACSA DETAILS C8 EROSION NARRATIVE C9 EROSION CONTROL PLAN - PHASE 1 C10 EROSION CONTROL PLAN - PHASE 2 C11 EROSION CONTROL PLAN - PHASE 3 C12 EROSION CONTROL DETAILS C13 SWM MAPS C14 SWM MAPS & CALCS C15 PRE DEV VRRM MAP C16 POST DEV VRRM MAP & CALCS C18 BMP INSTALLATION & MAINTENANCE Tax Resources 0 81arkbum W4 e�aar Mx Safety F SHIMP ENGINEERIN G1 LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM M. SHIMP 4. No. 45183 'sIM' rAT VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. COVER SHEET 19.006 C 1 / / 6 I El I EX. VARIABLE WI TH I / M/ ACSA UTILITY E� MT � J WM E3 / 411 24.WALNUT \ \ \ FRAME ET Y J IVBR) \ \ \ \ \ ISHED (TBR) ' S 30 ... HEMLOCK \ \ 1 / / I S . H.. ... . 80.5' ^ � � . APPROVED' a / 201500112 I �p 6 \ \ \ 478.26 \ \ \ / t.OUT 274.73 24. WALNUT (TBR) \ ER DRAINAGE ESMT DB 377�VIAG PG 36OF 15" / cc P TBR PUBLIC ROW yMP / PER SURVEY 2F-�1 / ... .. c / / /q'10 \ \ I \ / / / // // . (TBR) / / \ TMP 61 154B C SIG / �� / `WINDMILL VEN�TURES LLC SHIMP 10 COFFEE / o^� DB 4505 ;°G 218 I co A / / / / / '\�� / RIO ROAD EAST N Y. ou =� / I / / Q(reR) �° / _ HP , — M ZONE: INEIGHBORHOOU MODEL DISTRICT \ / / / / ° / / VARIABLE WIDTH R W m J / / / ® // I USE: SINGLE FAMILYRESIDENTIAL� -- — — / / / / / �^ / / AP X:LOC.OFP$ICR ENGINEERING / / (�'B♦;) E / / / i / / _ it -6 & SIDEWA PER DB 3772 PG 366 W �I W / / / 28.2 TBR) //� I 1.918/AC I // / // /^i A� / LAND PLANNING - PROJECT MANAGEMENT / / / PROVED SUB20 011 EX. RWSA UTILITY ESM I /� / / (TBR) / I // / / / / / FFE= 5.1 \ / / / / / / / I - .. 912 E. HIGH ST. 434.227.5140 DB 3563 PG 68 / I 1 STORY / / / / / / / / / / � + CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM I BRICK / , / / / 6�i / ..' � \L0 #999 (TBR) a / / 0' FE=475.17 / / / / / / / / / / / / / a / a' / O 10 OGWD 6.0 / / / / / / / / / I v I I J F- .. y (TB ) / WELL / / / / a^ / / / / / o 00 I v / I / � HOUSE / / � / I / � � � / / / / o / / / � o o "Q .: 018 HOLLY l / / / I / / / / I i / / / / / / / / . X. V ABLE WIDTH i. (TBR) 18 HE L K / / / / / I - CSA ILITY ESMT �� \ (B)�Y F ME / _ / / / I I / A 49 PG 68 A ME (TBR) / / / / / I ....... . � g` N-B 9 838.8 ASPHALT Q / / / I .. . E-114 633. 1 (TBR) I (/ .'� 015 12 ELE 468.446 I / / / / _ \ /\ / // // / / / G / 1.10 r IRON CK 5W E1 N42°26'09"E— 0� ES I / / .N1� \ \ \ ) // // / / // V UT : 090 .: I . . . v% n I 00 - RW A Wlvt BE ABANDONED / / (-3-04' S D \ / / / / (� 0 d� � TMP 62F2—E2 e M. SHIMP 4. No. 45183 r I / VSMP PLAN m / I fOLE TY C4NTY OF ALBEMARLE m / - zco \ I m EX. VARIABLE WITH �y ,S6 / I ... E: y/ ry DB 4830 PG 20 I / ro ACSA UTILITY E/$MT �� \ BENCHMARK / O ��O / PF� 'X� ; OG - 999 RIO ROAD N l 0.187 AC — S4 f — — 4N-3911o37.s7 — — — — TMP 62F—El SA EST PE k i ROBERT HAUSER HOMES INC / P vE z S42°21'11 "W _ SCE 1493_ 500 I WM E / 373.22' NAIL TMP 62F2-X C/O STONEHAUS B 15 112 .. (®; V / DUNLORA V LLC DB 4717 PG 703 I I / -- -- / TMP 62F2-B TMP 62F2 A DB 4717 PG 703 ZONE: R4 RESIDENTIAL SHEPHERDS RIDGE SHEPHERDS RIDGE AT ZONE: R4 RESIDENTIAL USE: FOREST RCYAD ALBEMARLE COUNTY, VIRGINIA DUNLORA COMMUNITY USE: UNASSIGNED 1.20 ACI.M 1 ASSOCIATION INC I 0.10 AC DB 5202 PG 778 ZONE: R4 RESIDENTIAL USE: UNASSIGNED 0.30 AC I I I LOT 14 MATCH LINE � I I 19.006 / EXISTING CONDITIONS & DEMO 20 0 20 40 60 Scale: 1 "=20' C 2 WMH FH W —w —w —w —W —W —W W — p92 jpg Wk —W W *\X �w —W WV* BELVEDERE BLVD. VARIABLE WIDTH R/W NEW VARIABLE WIDTH DB 3772 PG 366 307' TORIOROAD 185'- TO ENTRANCE 2 - STORMWATER MANAGEMENT ESMT EX.-TEMP.-SLOPE-ESMT. 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VARIABLE WIDTH / / OLE DB 4830 PG 20 I ACSA UTILITY ESMT — 0.187 AC — — — — — — — — — — — — — — — — — — TMP 62F-El _ ROBERT HAUSER HOMES INC / I rt W1,411 TMP 62F2-X C/O STONEHAUS WV DUNLORA V LLC DB 4717 PG 703 TMP 62F2 A ZONE: R4 RESIDENTIAL SHE, HERDS RIDGE DB 4717 PG 703 � SHEPHERDS RIDGE AT ZONE: R4 RESIDENTIAL USE: FOREST R AD TMP 62F2-B / I I DUNLORA COMMUNITY USE: UNASSIGNED 1.20 AC ASSOCIATION INC I SHEPHERDS RIDGE AT DUNLORA I — 0.10 AC — — FOWL RIDGE DB 5202 PG 778 _ COMMUNITY ASSOCIATION INC I OURT 49' R/W ZONE: R4 RESIDENTIAL 48 PG 152 I DB 5202 PG 778 B ZONE: R4 RESIDENTIAL N USE: UNASSIGNED I USE: UNASSIGNED I o 0.30 AC \ / I I I 0.61 AC I I 00 -- -- SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM M. SHIMP 4. No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. UTILITY PLAN 19.006 20 0 20 40 60 Scale: 1 "=20' C3 a / ^1 ym P 2F-rr1 / / d ` d- LL I 7 l/761°Ja 76� a 76 76 — — 77' 7 \ 7\� d \ LLLL �C 7� — — 7S>'LL W / W@ w /� W W / W 1 \W W �N W I LLLLLLL LLLLLLLLLLLL " \ ` / / / 74 W 7580 6 2 Oo% u e �00 _ \ \ 77 in LLLLLLLLLLLLIFLLLLLLLLLLLLLL LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL LLehuLLLLL .\/ ^ / / 6 r �LLLLLLLLLLLLI�LLL LLLLLLLLL LLLLLLLLLLLLLLLLLLLLLLLL LLLLLLL LLLLLL / b1 \ / Cl , ° x as / RIO ROAD EAST I / — �� 3' " � 7 L ° ° 7� / 2.0% I / / /LLLLLLLLLLLL LL LK LLLLLLLLLLLLI-LlkLttL LLL L LLLLLK LLLLLLLLL LLLL L \ pp VARIABLE WIDTH R/W / / w A3 °LLLLLLLLLLLLLLLLLLLL L4LLLLLLLLLLLLLL�LLLLLLLLLLLLLLLLLLLLL LLLLLLL�L'LLLLL , 9 0 DB 3772 PG 366 � 2.0% � oanr / M I / 75 .� � o / I �76, 76 76 / / o / 0 o / / 77m6- c I / x / s7.s' / I / AA ^ / / / / a. /x < < / / ALL� / Y / / -/ a / EIGHT/4' J / I / 3 x 7 - ^ OFFICE w / 3/928.5 S� 9 I / FFE 477 ^o o 1 U '1 o 7e 76' I \ BE C MA K N-391 838. 8 E 1.14. 633. 1 / 7 7 ELE 468. 6 IRON CK W o DOT \ ` I TMP 62F2-E2 / CANTY OF ALBEMARLE DB 4830 PG 20 _ 0.187 AC — 500 L MAINTENANCEIF I — — — — — — ------------------- GROUND COVER ON ALL SLOPES I GREATER THAN 3:1 TMP 62F2-8 i 11 - A— ��A76\xLOT 1 LOT 11 LOT 3 LOTI4 -ppT 5 LOT 6 LOT 7� 888SF 89,fSF 892SF 8965 899SF901SF \ 903SF xFFE 478 F 478 FFE 478 �77 FFE 48 FIDE \FFE 478 FFE 478 LOT 1-7 47j \\\MF UNITS xX\ No 77 I / / ,®,-t - - � d \\11 LOT 8\ LOT 9 �1,277SF LO\0 LOT 11 LOT 12 LOT 13 1,412SF 1,334SF 1,397SF 1,406SF /f 800SF FFE/478.5 FfE 478.5 FIFE 478.5 FIFE 478.5 FFE 477.5 FIFE 477.5 \ 8 �\ \ LOT 8-13 \ \ AFFORDABLE ATTACHED \ \ \ UNITS 1 ° 1.4 766x° JY / / / LOT 14 LOT 15 LOT 16 LOT 17 >6 LOY� 18 I >8, 2,111SF 2,098SF 1,970SF 2,106SF / 2,4'J.— / FIFE 480 / FEE 479.5 FEE 479.5 FFE 479.5 I FFq 478 I .a. / LOT14 18 w / / / S \ / / Gov/ / I cx q N�6 20 . ° ,o / I x -/ 7 720 / l L// s / ALL HEIGHT 6' / / / BENCHMARK / 4N-3911037.,,6B7 TMP 62F—E1 / E-11493847.99 ROBERT HAUSER HOMES INC / NAIL TMP 62F2-X C/O STONEHAUS DUNLORA V LLC DB 4717 PG 703 TMP 62F2-A DB 4717 PG 703 ZONE: R4 RESIDENTIAL SHEPHERDS RIDGE SHEPHERDS RIDGE AT ZONE: R4 RESIDENTIAL USE: FOREST ROAD DUNLORA COMMUNITY USE: UNASSIGNED 1.20 AC ASSOCIATION INC 0.10 AC DB 5202 PG 778— ZONE: R4 RESIDENTIAL USE: UNASSIGNED 0.30 AC LOT 14 SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM qNM. SHIMP No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. GRADING PLAN 20 0 20 40 60 Scale: 1 "=20' 19.006 C4 490 B1 B2 490 490 AO Co CO Co 490 490 Al A2 A3 490 A1A A1B 480 480 485 4g5 485 485 485 485 O W 475 0 0 �o + 475 480 480 480 480 480 480 o of DE 470 0 a a f N 470 475 475 475 475 RAnp 475 TORMTECH WA MTM�A� 465 - - 465 470 470 470 470 470 470 LL A ranw-MMMI-61 MEllis 460 tO DO `O 460 465 465 465 465 465 465 > r 455 z 455 460 460 460 460 460 460 450 J _ 450 �mi 455 455 455 455 -mom 455 455 9+50 10+00 10+50 11+00 9+50 10+00 10+50 11+00 11+50 12+50 a 445 445 STORM PROFILE B1-B2 9+50 10+00 10+50 450 45G 3 STORM PROFILE Al-A3 9+50 10+00 10+50 11+00 11+50 12+00 12+50 C5 HORZ: 1"=30' VERT: 1"=10' 2 STORM PROFILE AO-UNDERDRAIN C5 VEERT: 11"=10� 4 STORM PROFILE Al A-A1 B C5 HORZ: 1"=30' C5 HORZ: 1"=30' VERT: 1 "=10' VERT: 1"=10' 485 485 490 B1 D1 C1 490 490 C1 C2 C3 C4 490 480 480 485 485NEW 485 485 475 475 480 480 480 480 470 47O --STOINIF 475 475 475 475 CHAMBER CAP- 5 ORMTECH- 465 - ---- --- 465 ,n a 470 470 470 470 QTnDKATrr ID 01111mim, NO 5C-310 CHAMBER— 460 0CC) 460 465 R465 465 will 465 OUT OF V8" 455 w 455 BASE 460 460 460 460 455 455 9+50 10+00 10+50 455 455 455 455 9+50 10+00 10+50 11+00 9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 5 STORMTECH SC310 7 STORM PROFILE Cl-C4 SHIMP C5 HORZ:1"=30' 6 STORMTECH MC3500 C5 HORZ:1"=30' ENGINEERING VERT: 1"=10' C5 HORZ: 1'=30' VERT: 1"=10' LAND PLANNING - PROJECT MANAGEMENT VERT: 1"=10' 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM C2 C2A 490 490 485 485 TA 480 480 475 475 ~ s M. SHIM r Nl No. 45183 470 iurE470 •d,AO �I'II �f'I �wtq 465 465 460 460 455 455 VSMP PLAN 9+50 10+00 10+50 11+00 11+50 8 STORM PROFILE C2-C2A 999 RIO ROAD C5 HORZ: 1"=30' VERT: 1 "=10' ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 STORM PROFILES C5 r ro - O ' r0 O O — � N Z � N as ----------- STORMTEC MC-3500 TORMTECH CHAMBERS I V=465.30 � N rn O z � � Z Tail J QNr � cp+ U� � WN dN�O p g U r rN 00 O c0 c0+ r 0 ZNOM a J U� m MOO oo woa Z r� O H N GRADE zw~i ��ap z�v~i o O10 � � EX. EX. 15" RCP PIPE EX. f5'--------- RCP PIPE ------_ - 0 °M°� v� 61.OSLF - ®0.08% � 0 102.91 LF � - 6" SCH.40 PVC ®0.00% 0 � 54.55 SCH.40 P F - 6" o C 0 0.00% °M°� v� o� o� o o� z z z • - If`Illa �r-a��.r��ri;�© �;___ w N _o 0 m - w rn '+ o z � IN o 1 z o 24" MH-1 DETENTION ACCESS GROUND ELEV. 474' ADS GEOSYNTHETIC 601T NON -WOVEN GEOTEXTILE AROUND ALL STONE LAYERS WOVEN GEOTEXTILE FABRIC �, UNDER CHAMBERS \ - 100-YR WSE 467.83'- - 10-YR WSE 465.86'-- ` 2-YR WSE 465.26'-- _yam 1-YR WSE 464.70' - - 18' HDPE PIPE c� C co WATER GETS INTO Al A THEN TO STORMTECH SC-310. ONCE THE CHAMBERS ARE FULL THE WATER"OUT=46 STARTS LEAVING TO STR. Al USINGTHE EXISTING PIPE. THE WEIR IN STRUCTURE Al PREVENTS THE WATER FROM ESCAPING SITE UNTILTHE STORMTECH SC-31C IS FULL 6" CONC. WEIR CAST - IN PLACE AFTER SITE IS STABILIZED NOTE: ALL PIPES CONNECTING TO STR. A2 MUST BE WATER TIGHT PIPES & JOINTS D ELEV. 475.44' STORMTECH SC-310 #3 STONE STONE TOP 468.65' CHAMBER TOP 466.98' CHAMBER BOTTOM 465.65' STONE BOTTOM 464.15' STORMTECH SC-310 SECTION C6 WEI Al I NEW 5' I ::�FI,0 DOGHOUSE MH I Al 5FT MH -4 - - a 16 d 6g6�6geg�8= d . Up SC/_/ 40 W �p�-W W W W WEIR Rq//v �u°� A2 `°° NEW 10' UD%fte UD DI-3B l ° S 0 MT H SC-310 O0 INV. - VDO #3 STO INV. 464.15 _ Amdbk --TOP OF Al = 472.00 6" CONIC. WEIR-\ 5" 10-YR ORIFICE WALL CAST IN ©465.20 PLACE AFTER SITE IS STABILIZED --TOP OF WEIR WALL @467.80 --100-YR WSE = 466.86' EX. 15" CMP� a --10-YR WSE = 465.86' --1-YR WSE = 464.70' NEW 18" HDPE 1.8" 1-YR ORIFICE @464.15 TRASH RACK REQUIRED 4 Al WEIR C6 SCALE 1"=5' 0 STRUCTURE A2 HAS A WEIR THAT WORKS WITH STORMTECH MC-3500 SYSTEM. THE PIPE TO STRUCTURE Al GOES IMMEDIATELY PAST THE WEIR IN STRUCTURE Al. J LLJ 0 LINACE " CAST R IZED NOTE: ALL PIPES CONNECTING TO STR. A2 MUST BE WATER TIGHT PIPES & JOINTS ��- STAIR STAIR ON EACH SIDE OF WEIR d y 5" ORIFICE 1.8" ORIFICE IEX. 15" CMP 15 " HDPE°° STR. A3 36" MH-1 TOP=476.45 100-YR WSE 471.63 10-YR WSE 469.52 2-YR WSE 467.72 1-YR WSE 466.92 6" MIN. ENVELOPE IN TRENCH STR. 31 STR. C1 STR. D1 INV. 467 36" MH-1 � DI -A TOP 476.00' ADS GEOSYNTHETIC TOP=476.44 TOP=475.20 601T NON -WOVEN GEOTEXTILE AROUND ALL STONE LAYERS - -- ---_--- 2Jo #3 STONE __._ -- .__-_-__-__________________________. 6" PERF. SCH 40 UNDERDRAIN INV.= 463.80 ISOLATOR ISOLATOR ROW ROW WOVEN GEOTEXTILE FABRIC UNDER ISOLATOR ROWS 2 STORMTECH MC-3500 SECTION C6 SCALE: 1"=10' GROUND ELEV. APPROX. 476.45 E TOP 471.8' IBER TOP 469.05' IBER BOTTOM 465.30' E BOTTOM 463.80' IIX X XI a 6 a. d a a a. 4 - Q - W W W W W W W W W L °° UD 3 DETENTION SYSTEM PLAN VIEW C6 SCALE: 1"=30' A2 �--TOP OF A2 = 476.06 --100-YR WSE = 471.63 --TOP OF WEIR WALL @470.40 WSE = 469.52 a --1-YR WSE = 466.92 ' 8.6" 10-YR ORIFICE @467.57 1.7" 1-YR ORIFICE @465.30 TRASH RACK REQUIRED 5 A2 WEIR C6 SCALE 1`5' i C1 N NE 18" ffiASIN' DFAtN ( I SOLA TOR ROW �STO,, TEC MC 3500 = � i ST E IN 46 .80 01 .,. N W I DII L_- i I zz I NEW 18" B1 NY LAST DRAT W 18" OPLAST ASIN °F C NE MH 1 a i In IV. . a a a SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM IN M. SH MP 4. No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 30 FILE NO. STORM SECTIONS & DETAILS 19.006 C6 • p oa po •p�Op00p Op OOp OOG pO OD OOppppo pp • 0 N OOOp OOOp00 op•O o o Q o0 op Opo B0 N6N po 0 oP vo9 a I Bo 6,GN o o� 6NW NpP 9 ]HO"Ie LI' Lc' 1/4- HOPE VUe. 1.411.1 1n IIUI'}: dr nrlNr vl IJr�-li• nr :�ux ,.r oP•nb,. �i1dalinn• Im. m .rpe.l. T ':' • .L.cn JRh .rr -1 1. inn 11 nu 1161 M WA ad l 1b. 1H' 4r vniw 1" 1. .- . \Fv[In❑ fill, 1"nlx.l.'x mJv.0 of 'Ili r nraof /rrl1'Ivdin mvJ by b, °:.larlunl_.Nu. n ryuvl a.. 0 0 0 0 .1:,d,� Uvr GlrvelipN r ARCM PLASTIC WWI TRASH RACK,;-�..„_NN SOLI TIONS r.O. M.N HDNN INC. 119 i-flY]-nT9 n,luRr.duryw..w 1 ORIFICE TRASH RACK DETAIL SCALE: 1-=5 New Trash Rack 111 Holes 30% Opening Area 00 00 N 00 00 00 6" Front Section N � 00 06 Side Section DI-sA3e,x FOR_QETALS_ OF INLET MN ANSIO ----------- rl ------------------- . w L•VARIAgE - MM. 20' C KEYED CONST, JOINT 2..6". 6.. ]..0.. 2" O GUITRER ' B MS A ACH OUT�TEAR I- -------------------- S I I _6. . ED BARS i BAW3" DIAMETERIADIAMETER BARS E WEEP HOLE FRONT ELEVATION Bems B (WV/i TTER REMOVED) 3.- . Sr/4" BENT RLATEZ=j SECTION B-B Li TYPE A NOSE OCTAL SHALL BE USED WITH CG-] M CG-7 STANDARDS.' _Y .r; Ile R L TYPE B NOSE DETAL SHILL BE USED WITH CC-2 STANDARDS. TYPE A ♦ TYPE B VJ" X 4" STUD SHEAR CONNECTOR WELDED GKVAJ@D PLATE FOR TYPE A TO SE BENT ON AN ANGLE OF M-30' TO ANGLE RM AT 2'CC, CONNECTORS AND IS TO K ANCHORED WITH l/:" X 4" STUD SHEAR NOSE DETAILS WELDED TO BENT PLATE AT 2-C-C. AMR. PAVEMENT DUA L 0-30 L M-x L :"-, •: ••, - WARPED PAVEMENT I h I " "2; 1 --Fr 1 ta.� 1 1 DETAIL WHEN USED FM u5E ON GRADES ADJACENT TO CURB FOR USE IN SAGS WITHOUT GUTTER BOTH SIDES TO BE SYMNETROAL SHEET IOF STANDARD CURB DROP INLET 12" - 30" PIPE: MAXIMUM DEPTH (H) - 8' 233 OA06 VRGNA DEPARTMENT OF TRANSPORTATION x2 2 DI3B DETAIL C7 NOT TO SCALE I/% SECTION CAST ORION -+•ice VI SECTION STEEL NOTES 2'-7• LUGS TO CAST WITH E 1'-3� " L 7YN" It7/i' A 1I4' 1. DEPTH OF FEET (HE TO B SHOWN ON 10--4" LONG PLANS. FOR DEPTH GREATER THAN 10' USE A COLLAR T- STANDARD D-IA _ - - OPTIONAL BRACE RIBS n 4.-2.. CAST GALV. RCN STEEL 86 i 3 LBS I 43.6 LBS INCLUDING LUGS�CINCLUOIMG ONNECTOR 2. THE "H' DNENSION SHOWN ON T STANDARDS AND SPECIFIED ON THE PLANS WILL BE MEASURED FROM T INVERT OF ONE WELDED THE METAL PPE TO T TOP OF THE JOINT STRUCTURE. PLµ "R' DIMENSIONS ARE APPROXIMATE ONLY FOR ESTIMATING WELD ALL PURPOSES AND T ACTUAL DIMENSIONS CONNES SMALL BE DETERMNED BY THE TO COLLAR CONTRACTOR FROM MELD CONDITIONS. 3. WHEN SPECIFIED ON T PLANS THE INVERT IS TO BE SHAPED N ACCORDANCE WITH STANDARD IS-1. THE COST OF FURNISHING AND PLACING ALL MATERIALS INCIDENTAL TOSHAPING 5 TO BE INCLUDED IN TT BD PRICE FOR THE PLAN 1/," A 4/i' x Y'J 4-1A... , STRUCTURE. (GRATE REMOVED) Lam' IL STNCTEAR 9 4. N THE EVENT THE INVERT OF THE COMETORS OUTFALL PIPE 5 HIGHER THAN T E�EEE BOTTOM OF THE STRUCTURE. THE INVERT AL A OF THE STRUCTURE SHN.L BE SHAPED WITH CEMENT MORTAR TO PREVENT ry� SECTION B-B STRUCT'UOOR RE. T E COST OF FURN ISN4NG E COLLAR DETAIL �11" MAIN RAISED AND PLACING ALL MATERIALS INCIDENTAL 21/.. LErTENNG IN THEE "PRRIICEE FORTTOIEB STRUCTURE. DIMENSIONS FOR 5. STEPS ARE TO BE PROVIDED WHEN H 5 CAST WON GAILY DUMP NO WASTE DRAMS TO WATERWAYS 4'-0" OR GREATER. FOR DETAILS SEE STANDARD STA DETAIL B 6. THIS ITEM MAY B PRECAST OR CAST - DETAIL A +1 N-PI-ACE. CLOTH DETAIL B� I 1 SMOOTH DOWELS AT 7. 4P4 X APPROXIMATELY RACED IN ALL 12" C-C I N PLACED N ALL AREAS ADJACENT P-3" 4" DEPTH R N6B, 079 ID NB Y 6" WIDTH T TO ABUTTING CONCRETE TO PREVENT A 2"X4MENi. W LEY OF DOWELS A 2"X4" NOTCH MAY B PROVIDED. H ♦ - SEE T-0-3.4 FOR ]• P HOLEE WEEP MOLE SEE NOTE 8 ii•• ALTERNATE OESCN, ALTERNATE DE S. 3• DIAMETER WEEP MOLE WITH 12"X12" } PLASTID HARDWARE CLOTH I/" MESH MINIMUM ECL 0 INQUIRE M HARDWARE CLOTH ANCHOREDR'FI 1 C+ I7It F THE STRUCTURE. UCTUR TO T OUTSIDE OF THE STRUCTURE. 9. CAST IN PLACE CONCRETE 5 TO BE DETAIL B 1 CONCRETE SSTTO BE )�O'r"EW PSI? SECTION A -A Y •' 1•' T' . 2" N -{' - � - I �- 1 D. µY ALTERNATE METHODS OF ANCHORAGE MEETING THE APPROVAL OF THE ENGINEER CONCRETE QUANTITIES FOR MIN. DEPTH Y. MAY BE SUBSTITUTED FOR THE CAST IRON LUGS AS SHOWN HEREON. 12: CONCRETE PIPE - 1.440 QU. Y0. CONCRETE t5" CONCRETE PIPE - CU. YD. CONCRETE APPROXIMATE WEKR/T t'�, II �.. CAST IRON N. DUMP NO WASTE DRAMS TO WATERWAY .518 1B" CONCRETE PIPE - TO 0 CU. YD. CONCRETE I� �It� GRA*E 363 2 18 LBS LETTERING IS REOURED ON ALL DI -I 24" CONCRETE PIPE - L817 CU. YD, CONCRETE SECTION C-C SECTION D-D GRATES, LOCATION OF LETTERING MAY VARY BY MANUFACTURER. MOITIONA1 OOTDOF DEPTH. GRATE DETAIL STANDARD DROP INLET kff;V�WO? 12" - 24" PIPE: MAXIMUM DEPTH (H) - 10' 253 VIRGNA DEPARTMENT OF TRANSPORTATION 302 4 DI -IA DETAIL C7 NOT TO SCALE l 1�- (JNsn] T � C174NW,] N" W [WARM] [BBOmmf- FMMESECTION L2PYm] .1I I' RA ! Mtis PAam Rap -- P Lr%••^I 2,1.11 Apy 3�4� (Is�m01-I 5 2 t/6' s W+6• • a u/le• I / l L6i„Yo LD'/lnoJ [�Nmn1 1 3Ar i •[Itn L3NA^7 O/Is- PLR 9�ai mGADDW< u, 4PV 114N.Y] SE(MCN VIEW 1/4• Lp,r61 DIM' K NEOr1R Cr9ic v F JJ m116 1Npp• Wl�n rAWr/ NPAlI44 /! ,o1xM [3`xxA t S/G• 2400' I [41mm AAiN NP•1118 RAJ VEYi ' '/3• (241„n) OM BOSS CI^-' [13nm11 4I I%A OAAE6 mm NIX; N Aei�+O A� m O MPRY rAAOARdLOGK:DD "dP [ETA. Wrt N a/4-f, 7N YAM },.. A. MW44G uT IN WAR FLOOPµ✓J�A p'IA;LIY:A-fy x Ow MWALr m R.. RIAL NAME WATR4M1i FAmE ! rpVpL (D ryr Ioal 5/F,A INN > WVCNf9AWMlI K riWD to rIHJWSr1M LOOrMO LRl4E A9YYRY 1=.�" ME1FNN:aaTYPICAL WATERTIGHT Wall Hawn MANHOLE FRAME & COVER LOCK LUG 4SSEI Y N.T.S i1G SHE 6 WATERTIGHT MH FRAME & COVER C7 NOT TO SCALE SEE STANDARAD SL-I FOR APPLOABLITY OF SAFETY SLABS. SECTION B-B BRICK CONCRETE OR CONCRETE BLOCK STANDARD PG-4 PAY LINE FOR INLET r-r_____---n ----------- In'.12-1 12" &-4 - 1 1 SEE XIML All y "Y4 By - r'""'1 ----- 1 L-L_-_-_ = . ,p PAY LINE FOR INLET MX4'-0" BAR A N 4" PC 4 REO'D. B�S• ROPE DITCH i" BAPS gg C. S RED' r ' ]- DIAMETER 84XI'-0" BARS 9 6" C-C.6 . WEEP HOLE D C'� (TYP.) : REO'0 1 NOTES 1. APRON IS TO BE CONSTRUCTED TO A DEPTH OF r-0" ON BACK SLOPE WE OF WEI (0-7). ON ROADWAY SIDE. THE DEPTH IS TO BE r-O" OR TO THE SHOULDER ELEVATION. WINCIEVER IS LESSER. 2- ALTERNATE METHODS OF ANCHORING µGCE IRON WILL BE ACCEPTABLE IF APPROVED BY T ENGINEER. 3. COLLAR AND GRATE ARE TO DE GALVANIZED IN ACCORDANCE WITH THE SPECIFICATIONS. 4. OUTSIDE DMENSIONS OF CRATE ME TO BE 3'-4" X 2'-11 4'. 5. ALL CONCRETE IS TO BE CLASS A3. 6. NORMAL DITCH IS TO B TRANSTIONED TO TIE SMOOTHLY INTO GUTTER. DITCH GRADE IS TO BE ADJUSTED AS NECESSARY TO MEET GRADE ELEVATION. 7. OUµTITIES SHOWN ARE BASED ON DEPTH H =5'-0 S. THE MOUNT OF CONCRETE DISPLACED BY PIPES MUST BE DEDUCTED TO MEAN TRUE QUANTITIES. FOR EACH FOOT OF DIFFERENCE IN DEPTH H ADD OR SUBTRACT INCREMENT AS SHOWN. 9. SEE STANDARD 01-7. DI-7A AND 0-78 FOR DETAILS AND DIMENSIONS HOT SHOWN HEREON. 10. GRATE BARS ARE TO DE INSTALLED SO THEY WILL BE ALIGNED PARALLEL TO THE DITCH FLOW. APPROXW I ES QUANTILE CLASS A3 CONCRETE REINFORCING STEEL CU. YDS. LBS. 4.091 60 WiMRENT PER FOOT OF DEPTH 00-0.362 CU. YDS. CONCRETE TO BE ADDED WHEN DOUBLE CUTTER IS REO'D..LN2 CU. SECTION A -A OPEN AREAS AT ENDS a PIPES Y DKETER 2" DIAMETER SOLD STEEL k97BAR '8"RS C ARE TO B BALEDE-E%TRA STRONG BAR a 10.68 LBS./FT. REO.0. BY WELONG. STEEL PIPE N G.41 LBS./FT. ` CONSTRUCTION WELD WELD r-p..r_p..T.pn "BIT J 5 L 2•X2•X B l/i' % I" L Y'%2•Xjj•• U., SHEAR HE i 4. 3,_p• y CONNECTOR i4` HOLES TO BE DRILLED l •X4"C1a L 2Vi X21/:"%l/4- 3,_8, L 2%i'X2%i'X`/`I IN L 2"X2"Xil" AT EACH END OF EAD RIPE. SECTION B-B SECTION C-C DETAIL A ALTERNATE DETAIL A SHEET ] OF REFERENCE STANDARD DI-7, 7A OR 7B WITH FLUME CONNECTION 502 12" TO 36" PIPE YRGNIA DEPARTMENT OF TRANSPORTATION 04.24 3 STD. DI-7 DETAIL C7 NOT TO SCALE HALF PLAN VIEW HALF SECTION A -A (WITH FRAME AND COVER REMOVED) BRICK CONCRETE NOTES: I. QUANTITIES SHOWN ARE FOR MANHOLE WITHOUT PIPES. THE AMOUNT DISPLACED BY PIPES MST BE DEDUCTED TO TABLE OF QUANTITES DEPTH BRICK MANHOLE CONCRETE MANHOLE BROK CONCRETE CONCRETE FEET THOUSANDS CU. YARDS CU.YADS 4 0.5 0.785 1.437 5 0. 0.785 L699 6 .9 0.785 I.961 7 LD 6.76S 2223 6 1.2 O.T65 2.495 9 1.4 0.785 2.747 10 1.6 0.785 3.009 It 1.9 0,970 3A33 12 2.2 O.B70 3.80 13 2.5 0,970 1 4,179 14 1 2O 0.9]0 4-541 15 3.1 03 IRE I 3.4 1 0.970 1 5.265 17 1 4.0 1 1,173 1 6.032 INCREMENT 1 0.45 OBTAIN TRUE CUµNTES. 2. A BASE THICKNESS OF W- WAS USED IN COMPUTING CONCRETE QUANTITIES. 3. INCREMENTS TO BE AWED FOR EACH ADDITIONAL FOOT OF DEPTH. 4. MATERIALS MAY BE BRIM. CONCRETE OR APPROVED CONCRETE MANGLE BLOCK. 5. IF BLOCKS ARE USED THE Mll THICKNESS OF SAME IS TO B 5". TOTHER WTHICKNESSES SHHEOWN CONFORM ALLTHICKNESS FOR CONCRETE. 6. ALL CONCRETE TO BE CLASS A3, 7. WHEN SPECIFIED ON PLANS THEINVERT IS TO BE SHAPED N ACCORDANCE WITH STANDARD 5-1. THE COST OF FURNISHING AND PLACING ALL MATERIALS INCI ENT& TO THE SHARING IS TO BE INCLUDED IN T BID PROF FOR THE StttCCTIRE. _ _. SPEOIXAM MANHOLE FOR 12" - 48" PIPE CULVERTS [RWIVRN GA OEPARTMENi Oi TRANSPORTATIOH 302 5 MH-1 DETAIL C7 NOT TO SCALE (1, 2) NIEGMTID MOURN FRAME & COVER TO MTOI 84SN OD. NYLOPLAST DRAIN BASIN WITH SOLID COVER tr NN WIDM GLA EDNE IF MN THICKNESS GUIDELINE SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM H M. SHIMP a No. 45183 SlrnveT. 01 M MMN PIPE SERIAL T OEPTHPIERME VSMP PLAN 13) VARUJAE INVERT RENTS MANUFACTURER AVAlANE 1ADCORDNDTO RECOAMEIJMMIN M I TRAFFIC LOADS CONCRETE STAR DIMENSIONS ARE FOR PLANSIFAI(E OFF) (MINsAuEMMCTLS IA IL•➢tEA WIOELINPURPOSESONY.VC TIODNfAESOCCMST RF 999 RIO ROAD BO. SAME AS MN. SUWI MNOFS MIDEU EROPGINTOMY ACRATIONIOCALSOILCWDITONR. vAWANEC Bf TRAFFIC LOADING R OTHER APPLICABLE DESIGN FACTORS. MCMABIHGro SEE DMWW N0.1001-1 W 11 FOR NON TRAFFIC INSTAIAPON (3) VmNBLE SUMP DEPTH 1:1 VARIOUS TYPESO NLEi& WiIET ADAPTERS 4'MINACCOOING TO PLANS AVAIIABIE l-36'f0R CORUG.UED HOPE !71 &I" 16 MN.WR'-24- MN.ON D' 6'MM ONN 30'83B (ADSAILLM211PCOALWALL.PDSHARM), NON ON SINGLE WALLA. 35I. NMA&17OF RI WED ON MANUFACTURING RED) WBV(EXPVCSEWERMEX:SgR PVC DWV 9CHb}PVCWOWwc co THEM FILLMATERULSWLLSECRUSHEDSTONEOROTFEHCORI6JGATEpNRIBBEDPVC y GMA WMRALMEFTIWTHEPEOUREMEMSOFCL t WATERTDHT JOINT CRASS It. 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ACSA DETAILS C7 PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION 1Y11P1ME" EH119111aIP7IT THE SITE CURRENTLY IS A GRASSED AND WOODED LOT, WITH (2) TWO ABANDONED FRAME SHEDS, AN ABANDONED FRAME CARPORT AND AN ABANDONED 1 STORY BRICK BUILDING WITH A SIDEWALK.THIS PROJECT PROPOSES (7) SEVEN MULTIFAMILY UNITS, (6) SIX TOWNHOMES, (5) FIVE SINGLE FAMILY DETACHED, AN OFFICE BUILDING WITH ASSOCIATED PARKING AND AMENITIES. THERE WILL BE A SILT FENCE AND (2) TWO SEDIMENT TRAPS TO BE CONSTRUCTED AS A PART OF THE EROSION PLAN. THE TOTAL AREA OF DISTURBANCE IS 2.14 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. 2. INSTALLATION OF TEMPORARY AND PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. 3. INSTALL BMP AS SHOWN IN THIS PLAN. EXISTING SITE CONDITIONS THE SITE CURRENTLY IS A GRASSED AND WOODED LOT, WITH (2) TWO ABANDONED FRAME SHEDS, AN ABANDONED FRAME CARPORT AND AN ABANDONED 1 STORY BRICK BUILDING WITH A SIDEWALK. ADJACENT PROPERTIES THE SITE IS BOUNDED BY BELVEDERE BOULEVARD ON THE NORTHWEST SIDE, RIO ROAD ON THE SOUTHWEST SIDE, WHILE THE NORTHEAST AND NORTHWEST SIDES ARE SURROUNDED BY RESIDENTIAL HOMES AND WOODS. OFF -SITE AREAS THERE ARE NO OFFSITE ACTIVITIES. SOILS THE SITE IS COMPRISED OF: 1- 216-CULPEPER FINE SANDY LOAM, 2 TO 7 PERCENT SLOPES, HSG: B CRITICAL EROSION AREAS THERE ARE NO CRITICAL AREAS ON THIS SITE. EROSION & SEDIMENT CONTROLS UNLESS OTHERWISE INDICATED, ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO THE MINIMUM STANDARDS AND SPECIFICATIONS AS SET FORTH IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, LATEST EDITION. THE MINIMUM STANDARDS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY VARIANCE. TEMPORARY CONSTRUCTION ENTRANCE (CE) - 3.02 A STONE PAD WILL BE CONSTRUCTED AT THE ENTRANCE THE SITE TO PROVIDE A MEANS OF REMOVING SEDIMENT FROM THE TIRES OF CONSTRUCTION VEHICLES LEAVING THE WORK SITE. THE CONTRACTOR SHALL REMOVE ANY MUD FROM THE EXISTING ROAD SURFACE BY MEANS OF SWEEPING AND SHOVELING. STORM DRAIN INLET PROTECTION (IP) - 3.07 THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS OR CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL LARGE, CONCENTRATED STORMWATER FLOWS. STD. AND SPEC. 3.07. CONSTRUCTION ROAD STABILIZATION (CRS) - 3.03 TEMPORARY STABILIZATION WITH STONE OF ACCESS ROADS, SUBDIVISION STREETS, PARKING AREAS, AND OTHER TRAFFIC AREAS IMMEDIATELY AFTER GRADING TO REDUCE EROSION CAUSED BY VEHICLES DURING WET WEATHER, AND TO PREVENT HAVING TO REGRADE PERMANENT ROADBEDS BETWEEN INITIAL GRADING AND FINAL STABILIZATION. SILT FENCE (SF) - 3.05 SILT FENCING WILL BE INSTALLED AS A FIRST STEP IN CONSTRUCTION ACTIVITIES. LOCATION AND DETAILS ARE SHOWN ON THE PLANS. TEMPORARY DIVERSION DIKE (DD) - 3.09 A TEMPORARY DIVERSION DIKE SHALL BE USED TO BOTH DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED DISTURBED AREAS TO A STABILIZED OUTLET AND TO DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY. LOCATION AND DETAILS ARE SHOWN ON THE PLANS. TEMPORARY SEDIMENT BASIN (SB) - 3.14 A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURE WHICH IS FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACCROSS A DRAINAGEWAY. IT IS USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. IT CAN BE CONSTRUCTED ONLY WHERE THERE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A QUALIFIED PROFESSIONAL. DUST CONTROL (DC) - 3.39 DUST CONTROL MEASURES IN ACCORDANCE WITH STANDARD AND SPECIFICATION 3.39 SHALL BE IMPLEMENTED ONSITE TO PREVENT AIRBORNE MOVEMENT OF DUST. MEASURES INCLUDE IRRIGATION, MULCHING OR OTHER MEASURES AS OUTLINED IN THE SPECIFICATIONS. TEMPORARY SEDIMENT TRAP (ST) - 3.13 A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.13. TEMPORARY SEEDING (TS) - 3.31 TEMPORARY SEEDING SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS. TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31. SOIL STABILIZATION BLANKETS & MATTING: THE INSTALLATION OF A PROTECTIVE BLANKET (TREATMENT 1) OR A SOIL STABILIZATION MAT (TREATMENT 2) ON A PREPARED PLANTING OF A STEEP SLOPE, CHANNEL OR SHORELINE. STD. AND SPEC. 3.36. PERMANENT STABILIZATION OUTLET PROTECTION - 3.18 THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM DRAIN OUTLETS TO REDUCE EROSION AND UNDER -CUTTING FROM SCOURING AT OUTLETS AND TO REDUCE FLOW VELOCITIES BEFORE STORMWATER ENTERS RECEIVING CHANNELS BELOW THESE OUTLETS. PERMANENT SEEDING (PS) - 3.32 A PERENNIAL VEGETATIVE COVERING SHALL BE ESTABLISHED ON DISTURBED AREAS WITHIN 7 DAYS OF BEING BROUGHT TO FINAL GRADE ON AREAS NOT OTHERWISE PROTECTED. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS TO BE APPLIED ACCORDING TO THE PERMANENT SEED SCHEDULE AS SHOWN ON THE DRAWING. SEEDED AREAS SHALL BE LIMED WHEN NECESSARY AT A RATE OF 2 TONS PER ACRES, AND FERTILIZED AT A RATE OF 1,000 LBS. PER ACRE OF 10-20-10 (10 LBS. PER 1,000 SQUARE FEET) OR EQUIVALENT. MULCHING (MU) - 3.35 ALL SEEDED AREAS SHALL BE MULCHED WITH STRAW IMMEDIATELY FOLLOWING SEEDING OPERATIONS. STRAW MULCH SHALL BE APPLIED AT A RATE OF TWO TONS PER ACRE. SOIL STABILIZATION BLANKETS AND MATTING - 3.36 SOIL STABILIZATION MATTING SHALL BE APPLIED IN THE CONVEYANCE AREAS OF THE DESIGNED DIVERSIONS TO HELP REDUCE VELOCITIES AND AID IN THE ESTABLISHMENT OF VEGETATION. A DETAIL SHOWING THE PROPER MATERIALS AND INSTALLATION IS SHOWN ON THE PLAN. CONSTRUCTION MAINTENANCE THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. ALL E&S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS PRACTICABLE. 2. THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING, DETERIORATION OR SIGNIFICANT EROSION. SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. 1. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL, OTHER APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS. 2. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS MAINTAINED. 5. AREAS WITH RIP -RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE IF HIGH FLOWS HAVE DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E&S CONTROL PLAN. GENERAL NOTES 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION OR DATA. THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING THE ACCURACY OF THE DATA, FOR LOCATING ALL UNDERGROUND UTILITIES, FOR COORDINATION OF THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION, FOR THE SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER. THE CONTRACTOR SHALL CONTACT "MISS UTILITIES" OF VIRGINIA AT 1-800-552-7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. REPLACEMENT OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 3. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY/PROTECT EXISTING STRUCTURES FROM DAMAGES. 4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS, ADJACENT LAND OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO COMPLETING ANY OFF -SITE WORK. 5. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 6. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 8. CONTRACTOR SHALL ADJUST ALL APPURTENANCES AS REQUIRED TO MATCH NEW GRADES. THE EXACT LOCATION OF APPURTENANCES SHALL BE COORDINATED WITH THE OWNER. 9.CONTRACTOR SHALL SUBMIT FOR THE APPROVAL OF THE OWNER SUBMITTALS OF ALL SPECIFIED MATERIALS LISTED IN THE PLANS, TO INCLUDE SHOP DRAWINGS, MANUFACTURER'S SPECIFICATIONS AND LABORATORY REPORTS. THE OWNER'S APPROVAL OF SUBMITTALS WILL BE GENERAL AND WILL NOT RELIEVE THE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. EROSION & SEDIMENT CONTROL NOTES: 1. ALL VEGETATIVE AND STRUCTURAL EROSION & SEDIMENT CONTROL (E&S) PRACTICES WILL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATION 9VAC25-840-40. 2. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO COMMENCEMENT OF LAND DISTURBING ACTIVITY AND ONE WEEK PRIOR TO FINAL INSPECTION. THIS REQUIREMENT CAN BE WAIVED AT THE DISCRETION OF THE PLAN APPROVING AUTHORITY. 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 ONSITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTRY EROSION AND SEDIMENT CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN REVIEWING AUTHORTY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN REVIEWING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABALIZATION IS ACHEIVED. 8. DURING DEWATERING OPERATIONS WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALY AND AFTER EACH RUN-OFF PRODUCING STORM EVENT. ANY NECESSARY REPARIS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. INSTALL AND MAINTAIN CONSTRUCTION ENTRANCES FOR ENTIRE PROJECT AT ALL LOCATIONS WHERE VEHICLES ENTER/LEAVE THE WORK AREA AND WHERE SOIL IS STOCKPILED. 11. MAINTAIN ALL EROSION AND SEDIMENT CONTROL UNTIL THE COMPLETION OF FINAL STABILIZATION. UNLESS OTHERWISE NOTED ON THE PLANS REMOVE ALL EROSION & SEDIMENT CONTROLS FOLLOWING THE ESTABLISHMENT OF A PERMANENT VEGETATIVE COVER AND COMPLETION OF FINAL STABILIZATION. MANAGEMENT STRATEGY AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION. REQUIRED PERMITS MUST BE IN -HAND BEFORE WORK BEGINS: PHASE 1-A 1. INSTALL CONSTRUCTION ENTRANCE AND INLET PROTECTION ALONG BELVEDERE BLVD. 2. INSTALL SEDIMENT TRAP 1 AND ITS DIVERSIONS. 3. INSTALL SILT FENCE AROUND SEDIMENT TRAP 2 LOCATION. 4. INSTALL STORMPIPES AS SHOWN WITH MINIMUM DISTURBANCE OF SITE (CLEAR ONLY TREES REQUIRED TO BE REMOVED FOR STORM INSTALLATION). PHASE 1-B 1. INSTALL SEDIMENT TRAP 2 AND ITS DIVERSIONS, AND THE REMAINING SILT FENCE ON SITE AS SHOWN ON PLAN. 2. CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. 3. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN WHOLESALE CLEARING, GRADING, AND STOCKPILING AND DEMOLITION OF STRUCTURES AND SIDEWALK. (CONTRACTOR SHALL NOT FILL THE AREA WHERE STORMTECH MC-3500 WILL BE LOCATED UNTIL IT'S TIME TO INSTALL THE FILTRATION SYSTEM & SHALL MAINTAIN TEMPORARY SLOPE TO ST-1 4. MAINTAIN SILT FENCE, DIVERSIONS, AND CONSTRUCTION ENTRANCE. PHASE 2 1. INSTALL CONSTRUCTION ENTRANCE AT THE NEW LOCATION AS SHOWN. 2. INSTALL RETAINING WALL AT THE SOUTH EAST CORNER. 3. INSTALL SANITARY, WATER AND THE REST OF THE STORM UTILITIES. 4. BEGIN CONSTRUCTION OF THE RESIDENTIAL UNITS ON LOTS 1-17. PHASE 3 1. REMOVE SEDIMENT TRAPS AS PERMITTED BY COUNTY INSPECTOR. 2 EXTEND PIPE (C4-C3) BY SEDIMENT TRAP 2 & INSTALL (132-131) AS SHOWN. 2. INSTALL STORMWATER DETENTION SYSTEMS. SEE SHEET C18 FOR GUIDANCE. CAST THE WEIR WALLS IN STRUCTURE Al & A2 3. BEGIN CONSTRUCTION OF THE RESIDENTIAL UNIT ON LOT 18, AND THE OFFICE BUILDING. 4. FINISH GRADING AS SHOWN ON THE PLAN. 5. PAVE THE PARKING LOT ON TOP OF STORMTECH MC-3500 & INSTALL CURBS. 7. ENSURE ROAD STABILIZATION, AND ALL E&S CONTROL MEASURES. STORMWATER MANAGEMENT: WATER QUALITY: TO ADDRESS RUNOFF QUALITY REQUIREMENTS SET FORTH IN 9VAC25-870-65, THE VRRM SPREADSHEET, SHOWED THAT THE PROJECT REQUIRES A TOTAL PHOSPHOROUS (TP) REDUCTION OF 2.07 LB/YR. TO ACHIEVE THE REQUIRED TP REDUCTION, A STORMTECH BMP WITH TWO ISOLATOR ROWS, THAT ACHIEVES 40% TP REMOVAL, WAS SELECTED TO TREAT A 1.14LB/YR OF RUNOFF WHICH FLOWS THROUGH THE SITE (55.07% OF SITE). THE REMAINING 0.93 LB/YR TP REDUCTION WILL BE MET WITH A PURCHASE OF PHOSPHOROUS CREDITS FOR THAT AMOUNT. THUS, ALL RUNOFF QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE ACHIEVED. WATER QUANTITY: SWM QUANTITY IS SATISFIED BY ANALYZING CONCENTRATED RUNOFF FROM THE DEVELOPMENT AT A POINT OF ANALYSIS (PDA) AT THE WESTERN CORNER OF THE DEVELOPMENT PROPERTY. 9VAC25-870-66-B(3) REQUIRES THAT CONCENTRATED RUNOFF FROM DEVELOPMENT AT THE PDA MEET THE ENERGY BALANCE EQUATION. TO ACHIEVE THIS, ALL CONCENTRATED RUNOFF FROM THE SITE WILL BE ROUTED TO TWO UNDERGROUND DETENTION FACILITIES (STORMTECH MC-3500 & STORMTECH SC-310). THE SITE WAS DIVIDED INTO TWO DRAINAGE AREAS, EACH DRAINAGE AREA FLOWS INTO A DETENTION SYSTEM. THE FIRST DRAINAGE AREA IS 1.849 ACRES WHICH FLOWS INTO STORMTECH MC-3500. THE SECOND DRAINAGE AREA IS 0.169 ACRES FLOWS INTO STORMTECH SC-310. BOTH DRAINAGE AREA 1 & 2 RUNOFF FROM THE DEVELOPMENT AT A POINT OF ANALYSIS (PDA) AT THE WESTERN CORNER OF THE DEVELOPMENT PROPERTY. THE RUNOFF FROM THE DETENTION SYSTEMS MEETS THE ENERGY BALANCE EQUATION. 9VAC25-870-66-C REQUIRES THAT THE POST-DEV 10-YEAR RUNOFF IS CONTAINED WITHIN THE SYSTEM AT THE POINT OF OUTFALL, THIS CONDITION HAS ALSO BEEN SATISFIED. PRE-DEV PEAK RUNOFF MAX. ALLOWED PEAK RUNOFF POST-DEV PEAK RUNOFF 1-YR 0.64 CFS 0.13 CFS 0.13 CFS 10-YR 3.32 CFS 3.32 CFS 2.95 CFS ENVIRONMENTAL CONTROLS 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO COMPLY WITH LOCAL ORDINANCES, STATE AND FEDERAL LAWS AND REGULATIONS APPLICABLE TO WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUT -DOWN OF MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. 3. ANY WASTE DISCOVERED DURING THE PROJECT SHALL NOT BE MOVED WITH OUT PRIOR AUTHORIZATION OF THE OWNER AND BE DIRECT -LOADED INTO COVERED ROLL -OFF CONTAINERS FOR TEMPORARY STORAGE PRIOR TO DISPOSAL IN A PERMITTED LANDFILL. EROSION & SEDIMENT CONTROL PERMITTING 1. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL LOCAL AND STATE EROSION AND SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. PERMANENT DETENTION PIPE MAINTENANCE 1. CHECK/CLEAR ORIFICE - SEASONALLY 2. CLEAN/REMOVE HEAVY DEBRIS FROM PIPE - SEASONALLY 3. INSPECT TRASH SCREEN & CLEAR DEBRIS - YEARLY 4. INSPECT CULVERT & CLEAR DEBRIS - YEARLY 5. INSPECT ENTIRE DETENTION PIPE SYSTEM & REMOVE SEDIMENT WITH VAC -TRUCK - EVERY 2 YEARS MINIMUM STANDARDS (MS): ALL APPLICABLE VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS AND MINIMUM STANDARDS SHALL BE ADHERED TO DURING ALL PHASES OF CONSTRUCTION. THESE INCLUDE, BUT ARE NOT LIMITED TO THE FOLLOWING: 1. STABLIZATION OF DENUDED AREAS: PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO BARE 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 OR UNDISTURBED FOR LONGER THAN 7 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED AT AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN 14 DAYS. 2.STABILIZATION OF SOIL STOCKPILES: DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. 3.PERMANENT VEGETATIVE COVER A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVE THAT, IN THE OPINION OF THE CITY INSPECTOR, IS UNIFORM AND MATURE ENOUGH TO SURVIVE TO INHIBIT EROSION. 4.TIMING & STABILIZATION OF SILT TRAPPING MEASURES: SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 5.STABILIZATION OF EARTHEN STRUCTURES: STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. 6.SEDIMENT TRAPS AND BASINS: A SEDIMENT BASIN SHALL CONTROL SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES. THE SEDIMENT BASIN SHALL BE DESIGNED AND CONSTRUCTED TO ACCOMMODATE THE ANTICIPATED SEDIMENT LOADING FOR THE LAND DISTURBING ACTIVITY. THE OUTFALL DEVICE OR SYSTEM DEVICE SHALL TAKE INTO ACCOUNT THE TOTAL DRAINAGE AREA FLOWING THROUGH THE DISTURBED AREA TO BE SERVED BY THE BASIN. 7. CUT AND FILL SLOPES: CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. & CONCENTRATED RUN-OFF DOWN CUT OR FILL SLOPES: CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME, OR SLOPE DRAIN STRUCTURE. 9.WATER SEEPS FROM A SLOPE FACE: WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. 10.STORM SEWER INLET PROTECTION: ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. 11. STABILIZATION OF OUTLETS: BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. 12. WORK IN LIVE WATERCOURSES: WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. 13.CROSSING A LIVE WATERCOURSE: WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX MONTH PERIOD, A TEMPORARY STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIALS SHALL BE PROVIDED. 14. APPLICABLE REGULATIONS: ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. 15. STABILIZATION OF BED AND BANKS THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. 16.UNDERGROUND UTILITIES: UNDERGROUND UTILITIES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER 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 FOR DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFFSITE PROPERTY. d.MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. e.RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. f.APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. 17. CONSTRUCTION ACCESS ROUTES: WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO PAVED SURFACES. WHERE SEDIMENT IS TRANSPORTED ON TO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL LOTS AS WELL AS TO LARGER LAND DISTURBING ACTIVITIES. 18.TEMPORARY E&S CONTROL MEASURE REMOVAL: ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENT. 19.ADEQUACY OF RECEIVING CHANNELS: PROPERTIES AND WATERWAYS DOWNSTREAM FROM THE DEVELOPMENT SITE SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE, DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATES OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION.LOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS: A. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED. B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: 1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR 2) (A) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS. (B) ALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS; AND (C) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM. C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE, THE APPLICANT SHALL: 1) IMPROVE THE CHANNELS TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS AND A TWO-YEAR STORM WILL NOT CAUSE EROSION TO CHANNEL THE BED OR BANKS; OR 2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN-YEAR STORM IS CONTAINED WITHIN THE APPURTENANCES; 3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWOYEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PREDEVELOPMENT PEAK RUNOFF RATE FROM A TEN-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MANMADE CHANNEL; OR 4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS SATISFACTORY TO THE VESCP AUTHORITY TO PREVENT DOWNSTREAM EROSION. D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS. E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT CONDITION OF THE SUBJECT PROJECT. F. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION, HE SHALL OBTAIN APPROVAL FROM THE VESCP OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE. G. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATORS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL. H. ALL ON -SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE. I. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY. J. IN APPLYING THESE STORMWATER MANAGEMENT CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS. K. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE STATE. L. ANY PLAN APPROVED PRIOR TO JULY 1, 2014, THAT PROVIDES FOR STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO I. DETAIN THE WATER QUALITY VOLUME AND TO RELEASE IT OVER 48 HOURS; II. DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL RESULTING FROM THE ONE YEAR, 24- HOUR STORM; AND III. REDUCE THE ALLOWABLE PEAK FLOW RATE RESULTING FROM THE 1.5, 2, AND 10-YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEAK FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK FLOW RATE BY A REDUCTION FACTOR THAT IS EQUAL TO THE RUNOFF VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED CONDITION DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED CONDITION, AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS AS DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO § 10.1-562 OR 10.1-570 OF THE ACT. M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS OF § 10.1-561 A OF THE ACT AND THIS SUBSECTION SHALL BE SATISFIED BY COMPLIANCE WITH WATER QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT (§ 10.1-603.2 ET SEC. OF THE CODE OF VIRGINIA) AND ATTENDANT REGULATIONS, UNLESS SUCH LANDDISTURBING ACTIVITIES ARE IN ACCORDANCE WITH 4VAC50-60-48 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) PERMIT REGULATIONS. N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 4VAC50-60-66 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) PERMIT REGULATIONS SHALL BE DEEMED TO SATISFY THE REQUIREMENTS OF MINIMUM STANDARD 19. SHIMP ENGINEERIN G1 LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM 71n rr11 H M. SHIMP 4. No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. EROSION CONTROL NARRATIVE 19.006 SDMH^,, a - \� WMH - \ 15' DI-313 FH W W -W -W -W W -W W - IGO I WWV W W -WaJ�W W W W W W W W W W W W i n LIMITS OF. a BELVEDERE BLVD.- - - DISTURBANCE �/ \ PH EB / VARIABLE WIDTH R/W AREA = 2.14 AC - T[CEN i DB 3772 PG 366 - I ,- \� EX. TEMP. SLOPE-ESMT - - - 15' DI-3B CE DB 3772 PG 366 IP CUR - INV.- IN.=463.75� r - _ _� 4 q g' E' \ / 481" O / ... / SEDIMENT _ -/-�� 2 DRAINAGE -- , AREA=0.668AC IF °GUY f° Q 24. WALNUT \ \ \ \ FRAME SEDIMENT TRA X R) \ \ \ \ \ SHED 1 DRAINAGE U (TBR) AREA=1.282AC x HEML K\ (TBR) pSMU ���/ ® WALNUT / U TS / (TBR) rn 1 EX. DRAINAGE / ESMT DB 377 x / VIAG PG 36 / l I _ \ I � OF15DC xw TBR \ \ O' TT PS TIM P 0-19 TS II p \ I \ PHASE IP / / i ®\L (TBR) / /`` N TMP 61 154B / I ' PHASE 1-B / ^cp / - I slc / / 471� DC WINDMILL VENURES ILL �� MINIMUM DIS RBA�ICE OFFEE - i a^ DB 4505 �G 218 / ON THIS SID OF/ SITE / RIO ROAD EAST Iou1 / I / / - / - - DURING PH 1-A ZONE: INEIGHBORHOOU MODEL DISTRICT V RIABLE WIDTH R/W m / / \ / i USE: SINGLE FAMILY RESIDENTIAL \ - / / / sT E BERM�EE DB 3772 PG 366 W W / / / / 1.918/AC / // / P ELIEV.p4472.00 DC �0 I 8 // / / 28.2 TBR) .` _ /._� I I / / / / EX. RWSA UTILITY ESM x / i � ' / / / (TBR) FFE=4 5.1 A / I DB 3563 PG_68 .I / 7 / : e. / x _ 470 I 1 STORY / / \QS BRICK W TEMPORARY 47.2 LF / ft 1" HDPE ©3.60% / a x x A FE=475.17Olu UGV�/ IN I (TB)�� O / / _ � HOUSE / / / / / � /^ � � / � / / / / / T � 1863 I I I / �/ x 4 . 0'o 18 HOLLY / / BAFFL� (T R) V 18 HE L K / A // o \ (edO �i / FR-A`ME / / 4.50' ARPORT (TBR) / I I �/ / I 17 46 x /I 4. ?\ ` \ / / / � / \ I / I I I I / 7� N_B9 C 8 ASPHALT- / \ 1 / R�6 / '' .--(��--► ) / / / 1 / / / /i+/ �/ / E ELE4 4 344fi TBR) _IRON_ C 9W Fl _ / �0-- 04' \ \ \ „ / / / S Ml, BE ED x VID i- t�" I TMP 62F2-E2 ✓ COWNTY OF ALBEMARLE WI THL UTILITY m EX. VARIE / O " a OLE DB 4830 PG 20 a I / N/ ACSA UTILITY EMT BENCHMARK N- 0.187 AC / / f QN-3911037.,87 TMP 62F-El s42°21'11"w - - _ E-1149384799 - - - - ROBERT HAUSER HOMES INC / 500 t WM E3 373.22' �E �2 IF I I * / NAIL TMP 62F2-X C/0 STONEHAUS WV / DUNLORA V LLC DB 4717 PG 703 TMP 62F2 A DB 4717 PG 703 ZONE: R4 RESIDENTIAL SH PHERDS RIDGE SHEPHERDS RIDGE AT ZONE: R4 RESIDENTIAL USE: FOREST RCIAD DUNLORA COMMUNITY TMP 62F2-B >.• I USE: UNASSIGNED 20 AC ASSOCIATION INC I SHEPHERDS RIDGE AT DUNLORA d I 0.10 AC - - FOWLER RIDGE DB 5202 PG 778 _ $ COMMUNITY ASSOCIATION INC - COURT 49' R/W ZONE: R4 RESIDENTIAL I I DB 5202 PG 778 DB 4839 PG 152 ZONE: R4 RESIDENTIAL USE: UNASSIGNED I USE: UNASSIGNED 0.30 AC \ 20 0 20 40 60 I 0.61 AC Sc e: 1 "=20' NOTE: STORM PIPES INSTALLATION SHOWN (EXCEPT FOR TEMPORARY PIPE NOTED) MATCHES THE FINAL PIPES. PHASE 1-A 1. INSTALL CONSTRUCTION ENTRANCE AND INLET PROTECTION ALONG BELVEDERE BLVD. 2. INSTALL SEDIMENT TRAP 1 AND ITS DIVERSIONS. 3. INSTALL SILT FENCE AROUND SEDIMENT TRAP 2 LOCATION. 4. INSTALL STORMPIPES AS SHOWN WITH MINIMUM DISTURBANCE OF SITE (CLEAR ONLY TREES REQUIRED TO BE REMOVED FOR STORM INSTALLATION). PHASE 1-B 1. INSTALL SEDIMENT TRAP 2 AND ITS DIVERSIONS, AND THE REMAINING SILT FENCE ON SITE AS SHOWN ON PLAN. 2. CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. 3. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN WHOLESALE CLEARING, GRADING, AND STOCKPILING AND DEMOLITION OF STRUCTURES AND SIDEWALK. (CONTRACTOR SHALL NOT FILL THE AREA WHERE STORMTECH MC-3500 WILL BE LOCATED UNTIL IT'S TIME TO INSTALL THE FILTRATION SYSTEM & SHALL MAINTAIN TEMPORARY SLOPE TO ST-1 4. MAINTAIN SILT FENCE, DIVERSIONS, AND CONSTRUCTION ENTRANCE. NOTE ALL SOIL ON THIS SITE IS 21B WITH HSG: B SOIL EROSION & SEDIMENT CONTROL SYMBOLS M. SHIMP 4. No. 45183 VSMP PLAN 999 RIO ROAD N0. TITLL KEY ALBEMARLE COUNTY, VIRGINIA CE SUBMISSION:2021.01.08 3.02 CONSTRUCTION ENTRANCE x -x -x -x 3.05 SUPER SILT FENCE SF REVISION: D 1) 2021.03.11 3.09 TEMPORARY DIVERSION DIKE [DRAWN TO SCALE] ST 3.13 SEDIMENT TRAP IP 3.07 INLET PROTECTION TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING FILE NO. MU 3.35 MULCH 19.006 Dc 3.39 DUST CONTROL © EROSION CONTROL PLAN - = LOD PHASE 1 LIMITS OF DISTURBANCE c 9 1 TMP 62F2—B SHEPHERDS RIDGE AT DUNLORA COMMUNITY ASSOCIATION INC DB 5202 PG 778 ZONE: R4 RESIDENTIAL USE: UNASSIGNED 0.61 AC I� I i \\II � LOT 8� 1,412SF LOT 9 �1,277SF LOT 0 1,334SF LOT 11 1,397SF/ LOT 12 1,406SF LLO0T 13 -f,800SF / 1 60 LOT 8-13 \ N AFFORDABLE ATTACHED / \ UNITS \ BENCHMARK / QN-3911037.,67 E-11493847.99 TMP 62F2—A SHEPHERDS RIDGE AT DUNLORA COMMUNITY ASSOCIATION INC DB 5202 PG 778 ZONE: R4 RESIDENTIAL USE: UNASSIGNED 0.30 AC PHASE 2 1. INSTALL CONSTRUCTION ENTRANCE AT THE NEW LOCATION AS SHOWN. 2. INSTALL RETAINING WALL AT THE SOUTH EAST CORNER. 3. INSTALL SANITARY, WATER AND THE REST OF THE STORM UTILITIES. 4. BEGIN CONSTRUCTION OF THE RESIDENTIAL UNITS ON LOTS 1-17. NOTE ALL SOIL ON THIS SITE IS 21B WITH HSG: B LLLV-4/6.b2 NAIL TMP 62F2—X DUNLORA V LLC DB 4717 PG 703 ZONE: R4 RESIDENTIAL USE: UNASSIGNED 0.10 AC / Z� / / /i — TMP 62F—El ROBERT HAUSER HOMES INC C/O STONEHAUS DB 4717 PG 703 ZONE: R4 RESIDENTIAL USE: FOREST 1.20 AC SHEPHERDS RID ROAD SOIL EROSION & SEDIMENT CONTROL SYMBOLS I N0. TITLE KEY 3.02 CONSTRUCTION ENTRANCE x -x -x -x 3.05 SUPER SILT FENCE SF 3.09 TEMPORARY DIVERSION DIKE [DRAWN TO SCALE] 3.13 SEDIMENT TRAP ST IP 3.07 INLET PROTECTION TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING MU 3.35 MULCH H DC 3.39 DUST CONTROL B�M 3.36 BLANKET & MATTING BEM = LOD LIMITS OF DISTURBANCE APP OVER B 015 12, 58 V. N=4 11.0.-.-.-. V. UT = 0.90 1 T BE ODIFIED V. I =4 . 3 V. UT = 69.73 - -- ----- PEF API R VED SUE 201 1.12,- TOF = 7 .12 INV IN- 9.22 - - INV OU - 469.02 B1 -N�6 77' 76,0 x I SHIMP �I ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 6.5 LF OF EX. 912 E. NIGH ST. 434.227.5140 3 ITARY SEWER DI E, CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM f BE LOWERED U ~ s M. sxnvir No. 45183 I A�o�A;IIlIZ�� VSMP PLAN 999 RIO ROAD i ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 I I 20 0 20 40 60 Scale: 1 "=20' FILE NO. 19.006 EROSION CONTROL PLAN - PHASE 2 C10 LOW MAINTENANCE GROUND COVER ON ALL. SLOPES NSc as Ham- CHu GREATER .THAN 3:1 / rn9 6 J > J 2 / X X 0 \ \ \ I 0 0 // S 7s \ 1\ I X X 0 // LOT 1 LOT 'I LOT 3 I LOTI4 Lp T 5 LOT 6 \ LOTI 7� ' FFE4 78 F� 478 FEE 478 V7 FFE 4 8 89 E \ 1478 FF�0478 \ X D \ X 4 ley ' 0� ME UNITS 11 \ \ \\ 7gx 0 l � Si'e WM II >> X 010 NEpV O O\ -F J W --" Va �70W W 1 " W W W CRS A P WEIR ) w 49 `` " 4A / 6 MTE H SC-310 RIO ROAD EAST I V. 4 V 3 STONE INV. 6/ \ _ VARIABLE WIDTH R/W �' / �� A3 7 DB 3772 PG 366 W / / / /0 I " IROW TOR C - I 67.5' / x / ' EC MC 500 STIC IN /4 80 / m x SU3 i FFICE 3w / �928.5 S� �Ic FFE 477 x A 1� ` °a Im x > I ;� \ / LOT LID F2,1 FE1 -2 BE C K I N-391 8 / 61 E-114 3. 1 I 7 /N ELE 46S. 6 ................IRON C W I 7 5002 -RW7 WM IU E ABANDONLD I I I..... O x OT IF TMP 62F2-E2 / l 'UTILITY COUNTY OF ALBEMARLE I / POLE DB 4830 PG 20 _ I � i l 0.187 AC J / 5003 L W MAINTENANCE WY IF GROUND COVER ON ALL SLOPES WV / I GREATER THAN 3:1 TMP 62F2-A SHEPHERDS RIDGE AT TMP 62F2-B / I DUNLORA COMMUNITY SHEPHERDS RIDGE AT DUNLORA FOWL R RIDGE ASSOCIATION INC COMMUNITY ASSOCIATION INC .. COURT 49' R/W I DB 5202 PG 778 DB 5202 PG 778 DB 48 PG 152 ZONE: R4 RESIDENTIAL ZONE: R4 RESIDENTIAL USE: UNASSIGNED USE: UNASSIGNED 0.30 AC 0.61 AC I \\II \ LOT 8� 1,412SF LOT 9 q,277SF L0�O 1,334SF LOT 11 1,397SF LOT 12 1,406SF LLO0T 13 11,80OSF FFE/478.5 Pff 478.5 FFE 478. FFE 478.5 FFE 477.5 FFE 477.5 610 LOT 8-13 \ AFFORDABLE \\ \ D UNITS \ BENCHMARK Q N-3911037., NAIL TMP 62F2-X DUNLORA V LLC DB 4717 PG 703 ZONE: R4 RESIDENTIAL USE: UNASSIGNED I 0.10 AC PHASE 3 1. REMOVE SEDIMENT TRAPS AS PERMITTED BY COUNTY INSPECTOR. 2. EXTEND PIPE (C4-C3) BY SEDIMENT TRAP 2 & INSTALL (B2-B1) AS SHOWN. 3. INSTALL STORMWATER DETENTION SYSTEMS. SEE SHEET C18 FOR GUIDANCE. CAST THE WEIR WALLS IN STRUCTURE Al & A2 4. BEGIN CONSTRUCTION OF THE RESIDENTIAL UNIT ON LOT 18, AND THE OFFICE BUILDING. 5. FINISH GRADING AS SHOWN ON THE PLAN. 6. PAVE THE PARKING LOT ON TOP OF STORMTECH MC-3500 & INSTALL CURBS. 7. ENSURE ROAD STABILIZATION, AND ALL E&S CONTROL MEASURES. DOTE ALL SOIL ON THIS SITE IS 21B WITH HSG: B I / WP I / WALL/HEIGHT/4' / TMP 62F-E1 ROBERT HAUSER HOMES INC C/O STONEHAUS DB 4717 PG 703 ZONE: R4 RESIDENTIAL USE: FOREST 1.20 AC /20 0 20 40 60 Scale: 1 "=20' SOIL EROSION & SEDIMENT CONTROL SYMBOLS N0, TITLE KEY [DRAWN TO SCALE] TS PS MU DC B/M 3.02 CONSTRUCTION ENTRANCE to SF 3.05 SUPER SILT FENCE 3.09 TEMPORARY DIVERSION DIKE 3.13 SEDIMENT TRAP ST 3.07 INLET PROTECTION IP 3.31 TEMPORARY SEEDING TS 3.32 PERMANENT SEEDING 3.35 MULCH 3.39 DUST CONTROL 3.36 BLANKET & MATTING B/M LOD LIMITS OF DISTURBANCE SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM M. SHIMP IiI No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 EROSION CONTROL PLAN - PHASE 3 Cil STONE 70' MIN. CONSTRUCTION ACCESS 3" SM-2A ASPHALT TOP COURSE EXISTING 2% 2% PAVEMENT �, 5" M,N. 21A AGGRLGAIL BASE PROFILE STONE 70' MIN. CONSTRUCTION rASPHALT PAVED ACCESS -X I V / WASHRACK EXISTING 2% 2% PAVEMFVT-' 12' MIN.* T *MUST EXTEND FULL WIDTH L-�- q� �-POSITIVE DRAINAGE OF INGRESS AND EGRESS TO SEDIMENT OPERATION TRAPPING DEVICE PLAN 12' MIN. POSIPVE DRAINAGE TO SEDIMENT 29 TRAPPING DEVICE FILTER 111_0711J _-- SECTION A -A A nunimimn water tap of 1 inch must be installed with a nu niumm 1 inch ballcock shutoff vahre sul lyiug a wash hose with a diameter of 1.5 inches for adequate constant presIaire. Wash water must be carried away from the enhance to an approved settlun, area to remove sediutent. All sednneiit shall be prevented ft-oul entering stoma (hair, ditches of watercourses. PAVED WASH RACK NO SCALE 9 � PAVED CONSTRUCTION ENTRANCE (PCE C12) Not To Scale CULVERT INLET SEDIMENT TRAP � II CLASS I RIP RAP RIPRAP HEADWALL AZ \ \� INVERT - PIPE * I l L I 11( VDOT #3, #357, OR #5 SEDIMENT STORAG // COARSE AGGREGATE y / E AREA *STORAGE REQUIREMENTS EQUIVALENT TO THAT OF TEMPORARY SEDIMENT TRAP, STD. & SPEC. 3.13 a.BARE WET STORAGE (B PERSPECTIVE VIEW (BELOWW BASE OF STONE) 67 C.Y./ACRE DRY STORAGE (BASE OF STONE TO TOP OF STONE BERM) PIPE INVERT NATURAL GROUND RIPRAP HEADWALL 1' 2' \ I AREAS TO BE DISTURBED ' (CUT, FILLED, ETC.) l qOW I IN. i moo► FLOW `CLASS I RIPRAP VDOT #3, #357, OR #5 COARSE AGGREGATE MAX. SEDIMENT DEPTH (CLEAN OUT POINT) AT 1/2 VOLUME OF WET STORAGE AREA ELEVATION SOURCE: NORTH CAROLINA SEDIMENT CONTROL COMMISSION PLATE. 3.08-2 (a:) CULVERT INLET PROTECTION iCIPi C8 Not To Scale TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Nozzle Gallons/Acre Anionic Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 12.5:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5:1 Coarse Spray 350 DUST CONTROL (DC) W 2 Not To Scale BERM ELEVATIONS ARE PER DETAIL 8 ON THIS SHEET PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. May 1 through August 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Foxtail Millet - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. August 16 through October 31: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. November 1 through February 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Winter Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. MULCHING SPECIFICATIONS: Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. LIME AND FERTILIZER SPECIFICATIONS: Lime and fertilizer needs should be determined by soil tests. Soil tests may be preformed by the Cooperative Extension Service Soil Testing Laboratory at VPI&SU, or by a reputable commercial laboratory. Information concerning the State Soil Testing Laboratory is available from CITY Extension Agents. Under unusual conditions where it is not possible to obtain a soil test, the following soil amendments will be applied: For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 1,000 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 600 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. LOW MAINTENANCE GROUND COVER: SOUTHEAST NATIVE GRASS SEED MIX (AMERICAN MEADOWS INC.) For slopes steeper than 3:1 grade, Mix the following seeds at 30 lbs/acre each, along with EC-2 Matting: Virginia Wildrye (Elymus virginicus), Little Bluestem Grass (Schizachyrium scoparium), Purpletop (Tridens flavus), Broomsedge (Andropogon virginicus), and Indian Grass (Sorghastrum nutons). 4 PERMANENT SEEDING PS C12 Not To Scale TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES N m Lw SEEDING RATE NORTH` 5 TEMPORARY SEEDING C12 Not To Scale 1992 3.35 Source: Va. DSWC TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES RATES: MULCHES: NOTES: per Acre Per 1000 sq. ft. Straw or Hay Ill - 2 tons 70 - 90 lbs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover) or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 15� lbs. winter cover or during hot, dry periods.` Apply as slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" lengths. Air-dried. Do not use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air- dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw ;hound be used, apply at a minimum rate of 2000 lbs./ac. or 45 lbs./1000 sq. ft. 6 MULCHING MU C12 CONSTRUCTION OF A SILT FENCE (WITH WIRE SUPPORT) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. I I �l FLOW 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 01,10 FLOW 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SILT FENCE (SF Not To Scale 3.36 -1 TYPICAL ORIENTATION OF TREA TMENT - 1 (SOIL STABILIZATION BLANKET) r44MlIWl ON $N" I SLOPES, STRIPS C# NETHNG PROTECTIIE COKFING5 MAY RE APPLIED ACROSS THE SLOPE. BERM WHERE THERE 6 A BERM AT THE TOP OF THE SLOPE, BORIC THE MATERIAL OVER THE BERM 910 ANCHOR R BEHIND THE BERM I _ aN SLOPES, APPLY PNOT CWERNG PARALLEL TO THE ORECR04 Of FLO* AND ANCHOR SECURELY BRING MATERIAL oOPR+ TO A IETEI AREA BEFTAE 1FibIN'NC THE PISRALIATIOM It IKE END - IBDER 4' AND STARE AT 17 NTEWALS _ IN C1TC1F3, APPLY PROTECTME CQTRINC PARALLEL TO " DIRECTION OF FLOW USE CHECK SLOTS AS REOWIED AVOID JOINING MATERIAL N THE CENTER Of THE DR01 IF AT ALL POSSIBLE. TYPICAL TREATMENT - 1 (SOIL STABILIZATION BLANKET) INSTALLATION CRITERIA ANCHOR sLDT LGrE3 APPPER 1 0MATElY YS, STAPLES AL ROLL. PER 100 $0. YDS. CT AN SLOE ROIL. ANCHOR SLOTS, BE BUN SLOTS i aEc« sLBTs ro BE BURIED It TO ,t Ak IY MAX. 4:1 OR PLATTER S MVI SREPER THAN 41 J n,NcrtoH slot 70 B AND END BU I I I I 11 1 W l l _ - CIEOc YET' TO BE SNUCY (BUTTED (.CITE hESH MILL Huc I 1 ' iTPMIVI roro SEALED w ,a►tT MR1 LIEU OF EDGE JONT) 1 1 W W I I 40 w JOINT Y WIN. U&N, RRMLY 0M MESH ONLY) 1 1 1 1 AJCIIDR SLOT 5' MAX. 61 OR FLATTER 1 1 �- 3• MUI. STEEPER THAN 4:1 Y T I I F 1 1 I I I .pyE.NIfX 1LY�4..E. I 70 - TWF CHECK SLDR 11 Y Y I I 1 1 I MIM. - - vw. AA TO ,Y e' TO or MIN, PLAN VIEW STAPLING DIAGRAM STAPLE FORMED FROM NO, IF STEEL MORE. CHECK SLOTS R BLS, r STAPLE MM. LENGTH FOR SANDY SOIL 50.CEQ INTERVALS, ALS: S. STAKE MPJ L04CTN FOR OTHER SOL NOT REO.•D WITH ALL COME►NATKxfBUNKETS .ivCTsaa St OT TAMP _ f1AML� FERMIIML Fp.O . C t0 ,Y TAMP FI'OILY Source: Adapted from Ludlow Products Brochure Plate 3-1&1 1 Sources VDUTBQAX SOIL- STABILAZATCN BLANKET 3.36-1 Sediment Trap Design Data No Weir Length DA Wet D1 Wet Vol. Dry D2 Dry Vol. A B C HO(ft) H (ft.) Z (ft.) W(ft) (ft.) (Acs.) Vol. (ft) Cy Vol. (ft) Cy (Req.) (Prov.) (Req.) (Prov.) 1 470.0 468.5 466.5 2.0 3.0 3.0 4.0 7.7 1.28 85.9 2.0 87.4 85.9 1.5 174.1 2 472.0 470.5 468.5 4.0 5.0 3.5 4.5 4.0 0.67 44.8 2.0 46.3 44.8 1.5 96.6 ORIGINAL 1 Z GROUND ELEV. EL=A Area 2 DRY STORAGE D2 67 CU. YD./ACRE Avg EL=B Area 1 WET STORAGE 67 CU. YD./ACRE D1 FILTER CLOTH ORIGINAL (EXCAVATED) GROUND EL=C ELEV. *SEE PLATE 3.13-1 COARSE AGGREGATE** CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LENGTH (IN FEET) = 6 * DA (IN ACRES) DIVERSION DIKE !ijCOARSE AGGREGATE EXCAVATED FILTER CLOTH AREA **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) 1992 3.13 MINIMUM TOP WIDTH (W) REQUIRED FOR SEDIMENT TRAP EMBANKMENTS ACCORDING TO HEIGHT OF EMBANKMENT (FEET) 4-- W a - x Ib w ---_-------- 1.5 0.5 2.0 1.0 2.0 2.0 2.5 1.5 3.0 2.0 2.5 2.5 3.5 2.5 No H 4.0 3.0 3.0 3.0 4.5 ss s.o ao 4.0 4.s - DVAVA1rP ,� GROUND Source: Va. DSWC Plate 3.13-1 TEMPORARY SEDIMENT TRAP 1 , L / Not to Scale GRAVEL CURB INLET SEDIMENT FILTER RUNOFF WATER SEDIMENT CONCRETE GRAVEL FILTER SPECIFIC APPLICATION WIRE MESH FILTERED WATER CURB INLET THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE 10:)INLET PROCTION (IP) C12 Not To Scale SOURCE: VA. DSWC PLATE 3.10-1 11 TEMPORARY DIVERSION FILL (FD) 12 Not To Scale TEMPORARY DIVERSION DIKE Compacted Soil 12 TEMPORARY DIVERSION DIKE DD C12 Not To Scale Plate 336-2 SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM �J�T' M. SHIMP 4 No. 45183 SIrD,FAr ti�'� VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 EROSION CONTROL DETAILS C12 Not To Scale _ I / .. .... ..;. .... .,., ... .,.,.. .. .. .. .. ... ... __ CURB ..... ..... .... ..... .... ....... .............. — � / — j > / (iHtl LL-tea'-- —y _ IW W W W W W e W W W W �C� � � // W W W W W W W W W W W� W W W \W W W� W� W �� W \W W WI W W W �W W � W W y✓ W W � / ��� / // 411 W W W W W W W W W W W/ W W W W W W W W W W \ W W ✓A W tali �W W�W W W W W � W W W W W W W W W � W� / / / / � l RYpp 0 K � .' . ' .' I /V W W W W W W W / W W W W �- ✓, \ W W W W W W I W rn ca PRE-ULV 11I1PERVIOU/S AREA=�.109AC t19PRE-DEV DABwAREA=1.�AC\ W W I W m� W W w W N TMP 61 1-'4B / ILL�VEN�uRES LLC w w w w w ��PRE-DEV MANAGED �wINDM TURF AREA�1.173AC/ 4� W W W �, W W W W w W W W <W W W W W Q �D B 4505 rG 218 V W w w W RIO ROAD EAST y l✓ W I W W W/ W W W W W W/ — W W W W/ w �W W W W W W W W W W W W 7ONE �NDGHBGRHQOU wtOD�L DISTRICT VARIABLE WIDTH R/W W W W/ . W W W/ W W W W / W W �W W W/ W W W W W W y W W W A yUSE- SINGLE vFAMl Y RESID,ENTIAL DB 3772 PG 366 I I W/ W w w /W W W W /w w W W w �W W W .v/� w W W/ W w W I w W W w w1.Q1.81AG I/ W W w/ W W W �w W / W w W/ W W W � W /�✓ W W w W W/ W W W W W W W w W w l W W W / W W W / / � // / / / / / /V, .✓ � � W � w w W / W w � w w w w W w w/ W w w � w W W� w w w/ w w w w wl w w � / /� � � I/ / // // ���� / � w w w W w W w\ W W w w W w w W w w w w / w w✓ w / I. w W w w w w w W W / w w / / I / / / O \r w w W \Y w �� W w W W w W W w w �/ W W w W/ � w W y✓ / w w W W yr- �W W / � � / � I / // / / // / ... .. m W w W ✓ w w W W W w w W W w W W w/�� w w w �/ ✓ ✓ w/ ✓ w w m/ w w ✓ I / I I / // // / C� I / 0* Wi/ W/�b 0 20 0 60 �/ / / Scale: 1 "=20' / \i / / LEGEND FA POST DEV IMPERVIOUS 00 4 TO STORMTECH MC-3500 Q r _ Q a a POST DEV TURF - 417 TO STORMTECH MC-3500 POST DEV IMPERVIOUS TO STORMTECH SC-310 BELVEDERE BLVD. <1 Q Q POST DEV TURF VARIABLE WIDTH R/W TO STORMTECH - POST DEV DATOS C-350o MC-3500 AREA 50849ACTo V �, � ���� �� _� a Q a a DB 3772 PG 366 POST DEV TURF TO Q / POST DEV DA TO SC-310 AREA=0.0671 AC I I < -z / Q Q Q Q G FLOW DIRECTION - — �72_ 7 474= 475 <I �-- I „ /, a r �� / 4a Q Q Q Q Q Q 4 Q Q ° Q 4 Q 488 F�6 4 _ / <. QC'QQ QQ QQQQ QQQQfb 'Q / r. NI n / / QQ QQQQ QQ QQ Q QQQQ QQQ / / i n d Q Q Q Q Q S� L Q Q Q Q Q Q Q IQ Q J Q Q Q 77 QQQQ QQVQ Q QQQQQQQQQQ X?' Q QI Q Q Q QQ Q Q QQ QQ Q Q aQaQ<1 �' Q // � "P9ST D D T � aQQQQQ Q y S yAC / 7 QQQ QQQQa Q URF TO / Q Qx \Q Q x f 1 y y SC-310Q\ aQQ QaQ A 0.01 Q Q Q Q Q 1 ;y �a�Q9�j Q Q / QaQ/ QQ Q \ QQQQ I vQ QQQ 9 \QQ QQQ Q QQ Q Q� Q QQ QQQQ Q QQQQ QQQQ Q Q .QQQ a Q Qa Q�Q ��/ �1 <—Q RIO ROAD EAST ��� o — — POST/6 _ p Q Q �Q — Q V RIABLE WIDTH R�W rorn Q Q Q Q Q Q Q Q Q Q Q Q Q DB 3772 PG 366 I ° n r n y _ .1 8 0 Q Q Q Q Q Q Q Q / � / / I / aQ�ahQaQQQQa/QQao QQQaQQQo QQQQQQQQQB QQQ'�Q�QQ QQQ , / /� / / / / Q Q Q QQ Q QQ Q Q QQ Q Q Q®Q Q Q Q I / Q Q Qf� Q Q GQ Q QQ aQ Q QQ QQ Q QQ Q QQQ QQ QQQaQ�aQaaQa�QaQaQQaQaaQaad�QaaagaaaQaQdaQ�QaQ <1Q aQ Q Q Q QQ Q Q Q`� ALL �1EIGHT 4' / I y�l �� I A 0 1 A a Q QQQ QQ Q Q'�QQQQQQQQQQQ Q�QQQQaQQQQ�QQ �Q / / ^/ / I / FF 847 Q Q / / / / Q Q� Q Q y y I l ti / Q7 Q Q Q Q Q y a2 / / y <j QQ Q Q p QQ ��� / ��Q�QQ Q �< Q QQQQ QQ/ Q QQQ Q�IQa QQQ QQQ )Q\ Q`� Q Q Q Q Q Q Q Q/n I I � 7, y 7 ,, � y I s I �I�" I >_ I I >r■�■■f�'� � `a I� i�' II i�r I I I 1% LEGEND PRE DEV IMPERVIOUS PRE DEV TURF FLOW DIRECTION qNM. SHIMP No. 45183 'snv... 10 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. SWM MAPS 19.006 C13 6 X X D A 1 7 .� a 7 a 680 76 77°0 7 �t7as \ / o 01 If �1 DA 7�2 D/ WEIR A 563 w 700 77" 1p / 7 6 ` r ¢''7 75 / 9's 1e `o, -.- - - - 0 MT0rec E / �� � �1 / C1 n� ,5 1+-�- ir-I r+i a / 3 , / R-10--ROAD EAST I � ' I I v. 46 - - - �' / x x73 / 7 0� VARIABLE WIDTH R/W �� n v g3 T E V. sa / \ 0 o DB 3772 PC 366 pD o� / °p - / 1 5n / / ISO TP6'10 ° / 076 o D o76 o 0 77 / Row 77 a / 7. EC MC 500 / �� / _ / .,) sr IN .�+ 80 / NI / D 3 D A o ALL 'HEIGHT/4' � FF 47 �1 1 I z / >6 D A� 1 Bl �6 .0 o w sax / / I 1 / 7 6 / 72 ' / Sr i ALL HEIGHT 6' 999 Rio Road Inlets Drainage Area Summary Impervious C 1 10.9 Pervious C 1 10.3 Str. Type Str. No. Total Area (ft) 7(,Ut7r)fc Imp. 10 Area (ac) Ex. DI-3B AO 9,406 9,406 0 0.90 0.22 DI-7 AIA 6,982 788 6,194 0.37 0.16 DI-3B A2 16,534 12,442 4,092 0.75 0.38 36" MH-1 A3 0 0.00 0.00 36" MH-1 B 1 0 0.00 0.00 DI-3B B2 2,708 2,620 88 0.88 0.06 DI -A El 16,144 13,815 2,329 0.81 0.37 36" MH-1 C1 0 0.00 0.00 DI-3B C2A 5,847 4,252 1,595 0.74 0.13 MH-1 C2 0 0.00 0.00 MHA C3 0 0.00 0.00 DI-7 C4 23,321 12,929 10,392 0.63 0.54 YARD DRAIN D1 3,445 1,304 2,141 0.53 0.08 YARD DRAIN D2 2,867 1,288 1,579 0.57 0.07 YARD DRAIN D3 4,392 1,265 3,127 0.47 0.10 YARD DRAIN D4 3,180 758 2,422 0.44 0.07 999 Rio Road LD-204 Stann"ter Inlet Computations OJcbWO Only Sng ldeta Wy ae s@ An Ex. DI-3B 1 16 0.22 1 0.90 0.19 1 4.0 1 0.78 1 0.00 028 1 0.015 1 0.02 0.02 1 0.00 1 5.0 0A I 100.0% 0.78 0.00 6S 1.26 0.0 120 6.79 014 98.1% 1.27 0.02 AlA M-7 3.50.5 0.16 0.37 0.06 4.0 0.24 am 0.24 0.015 0.02 0.50 0.00 0.04 0.5 0.08 im 65 0.38 0.19 0.57 0.07 0.5 0.14 1.89 A2 Dl-3B 10 0.38 0.75 0.29 4.0 1.14 0.00 1.14 0.015 0.02 0.02 0.00 6.49 0.13 99.7% 1.14 0.00 65 1.85 0.00 1.85 7.78 0.16 89.9% 1.67 0.19 132 DI-3B 6 aw 0.88 0.05 4.0 0.22 am 0.22 0.015 0.01 0.01 0.00 4.68 0.07 100.0% 0.22 0.00 6S 0.36 0.00 0.36 5.63 111 100.0% am 0.00 Et M-A 3.50.5 0.37 0.81 0.30 4.0 1.21 aw 1.21 a015 0.03 0.01 aw 0.11 0.5 0.23 7A4 65 11.96 0.00 1.96 1 1 10.16 0.5 0.31 9.60 C A DI-3B 6 0.13 0.74 all 4A a,K) am 0.40 0.015 0.01 am 438 0.09 100.0% 0.40 0.00 65 01 0.00 0.64 523 0.10 95.1% 0.61 0.03 CA DI-7 3.50.5 0.54 0.63 0.34 4.0 1.35 0.00 1.35 0.015 0.02 0.02 0.12 0.5 0.24 737 63 2.20 1 0.00 220 0.17 0.5 0.34 10.23 DI YARD DRAIN 1 0.08 0.53 0.04 4,0 0.17 am 0.17 0.015 0.05 0.02 0.00 0.07 0.5 0.14 4.05 65 ar 0.00 027 0.10 0.5 0.19 5.33 D2 YARD DRAIN 1 0.07 0.57 0.04 4.0 0.15 0.00 0.15 0.015 0.05 0.02 0.00 0.07 0.5 0.13 3.76 65 0.24 0.00 024 0.09 0.5 0.18 4.96 D3 YARD DRAIN 1 0.10 0.47 0.05 &a 0.19 0.00 0.19 0.015 0.05 0.02 0.00 0.08 0.5 0.15 431 63 0.31 am 0.31 0.11 0.5 0.21 5.79 D4 YARD DRAIN 1 0.07 01 0.03 4.0 0.13 0.00 0.13 0.015 0.05 0.02 0.00 0.06 0.5 0.12 3A7 6.3 II'_i 0.00 021 0.08 05. 0-16 458 999 Rio Road LD-229 STORM DRAIN DESIGN COMPUTATIONS From To Catch. Runoff Inc Accum Toc Total Total lup IDn 1pipe Inv Pipe Pipe velocity Flow time Point Point Area Coef AC AC Intensity Flow (cfs) invert Invert !Length Slope Diameter Capacity Inc (ac) (min) (in/hr) IFJ IE1 (ft) % (in) (cfs) (Ws) (min) 1 2 3 4 5 6 7 8 9 1 10 1 11 1 12 13 14 15 16 17 A3 A2 - - - - - - 2.61 1 465.30 1 465.00 1 28.66 1.05% 18 9.3 4.5 0.11 *10-Yr Flow from HydroCAD MC-3500 A2 Al 0.38 0.75 0.29 0.29 5.11 5.14 1.47 465.30 465.30 102.16 0.00% 18 1.6 1.0 1.68 Al AO 0.22 0.90 0.19 0.19 6.68 4.78 2.71 464.00 463.75 1 102.16 0.24% 15 10.8 1 7.3 0.23 **10-Yr Flow from HydroCAD MC-3500 + SC-310 AIB AIA - - - - 5.23 5.11 0.10 464.15 464.02 28.71 0.5% 18 6.4 1.3 0.36 ***10-Yr Flow from HydroCAD SC-310 B2 BI 0.06 0.88 0.05 0.05 5.36 5.08 0.28 470.53 469.33 56.13 2.14% 15 8.2 3.1 1 0.30 C4 C3 0.54 0.63 0.34 0.34 5.30 5.09 1.73 470.15 469.75 65.95 0.61% 15 4.4 3.2 0.35 C3 C2 0.00 0.00 0.00 0.34 5.35 5.08 1.72 469.55 468.50 175.42 0.60% 15 4.3 3.3 0.88 C2 CI 0.00 0.00 0.00 0.34 5.88 4.96 3.93 468.30 467.92 37.79 1.01% 15 5.6 5.0 0.13 **** Flow from C3-C2+ Flow from C2A C2A C2 0.13 0.74 0.10 0.44 5.13 5.14 2.25 1 470.90 1 469.70 93.16 1.29% 15 6.4 4.7 0.33 999 Rio Road Energy Balance Equation Summary: POA 24 Hr 1 year Storm Comparison: Qne empm!5 I.F.*(Qp.wo.ewpea*RVPro-Derolopev7RYMvnI°pal < (QmmIm*R V r�r.,w))Rvarrrlo 0.64 0.051 IMax Qee.elope4 = 0.13 cfs 0.194 SITE AREA: Qlxe-&� ac = RVp ,,,Velopw = RVMI = Achieved Post-Dev Max Runoff Qtyr = 0.13 efs. Site complies with 9VAC25-870.66-(3)A Maximum Qioyr = 3.32 cb v) Achieved Qioyr = 2.95 crs LF.= 1 0.8 FOR LDA> 1 AC LP,= 1 0.9 IFORLDA<IAC LDA= AC Predev Flowrates Postdev Flowrates Storm cfs 1-yr 0.13 10-yr 2.95 Flow Reduction Check 1 Predev Reduced Energy Balance Equation Compliance: Achieved POST DEV IMPERVIOUS TO STORMTECH MC-3500 NO HATCH IS TURF AREA - - INLET DRAINAGE AREA FLOW DIRECTION SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM 11'j �r1 rfi H M. SHIMP 4. No. 45183 3I��IZ} rx��1�Gvrw�1' SlrnrAr ��l VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 SWM MAPS & CALCS C14 SOIL TYPE IS 21B HSG: B LEGEND mPRE DEV IMPERVIOUS � I w .MANAGED. -TURF BELVEDERE BLVD.LIMITS of A=t.ssAe w w VARIABLE WIDTH R/W DISTURBANCE W w w DB 3772 PG 366 AREA = 2.14 AC W W J� W W V� JW W W W W W V W W V� �✓ W W W W W W W W W W W W W W W JW W W JW W JW W JW W W W W W W W W W JW W JW W JW W W W FOREST/OPEWSPACE aA=0.35AC w w m w v w v- w ✓ m w v- w ✓ w w ✓ m w v- w m w m IMP.vA=0:13AC- ✓ w w v, w w � w w w w w w � w w � w w w ✓ w w ✓ w w w � w w � w w ✓ � w w w w w �✓ � w w w w w w w w w ✓ w w w � w w m JJW W W W W W JW W W W W W JW W W W W W W W W W W W W W JW W W W W W W W W W W W W W W W W W W W W W JW W W V W W W W W W W W W W JW W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w T 621 w w w w W W W W W W W W W W W W W W W W W W W W W JW W W W W JJW W JW W N JW W JN W N W W W JW W W W W W _______ .✓ W W W W W W W W W W W W W JW W W W W W W W W W W W W W W W W W W W JW W JW W W JW W W VW W JW W W VW � J TOP (551-1�413 w w w w WINDMILL'VEN'tURrS LLC DB 4505 PG 218 W W W W W W W W W W W JW W W W W W JW W W W W W JW W W W W W V✓ w W � W V� T w w w w w ZONE NEIGHBORHOOD MODEL DISTRICT R/W IUSEw SINGLE FAMpILY/ RIESIDENTIAL i6'--- W W W W W J W W W W W W J W W W W W W W W W W W W W W W W W W W W W 1 9�U AWi W W W W W W W W W W W W W W W W W J W W W W W W N W W W W W N W W W W W W W W W W N W W W W W W N W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W . W W W W W W . W W .. TO 62�2—E�2 . w w w w COUNTY OF ALBEMARLE Ile DB 4830 PG 20 / 0.187 AC — ROBERT AU SER HOMES i • • 20 ' • • • • DPRE DEV TURF E; PRE DEV WOODS SHIMij ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM M. SHIMP 4. No. 45183 VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 PRE DEV VRRM MAP C15 OMlnial AnlaA oen " pa Mao Alaltlfeyw lord Am es! ear Deer T.Ns women FwµbP�smm Pra4 dam o.00 wn�eTlw(mw 0.67 1 1 0.67 0.20 leP.sL.m�Pam) 1.16 1 1 1.18 0.95 Tor l Plarommus Readable for Remove l In D.A. A poll 186 Tans im Post Weebgnem Treatment WYnle In D.A. A 1111 4,556 Stormwater Best Manaeement PMctlass IRA= Runoff Reductlo ll ♦el Pri[[fa RumX Retlunlon Caadt DQ Mann Tud G(.A.,)a IxrcQ Impervious Conerorefil Rrcalxres) Volume Win U^arcam pmmimlR[I Runoff [ RNunlan lRl Remaining RumX Volume (IIa) Total BMp Phmphorus Treatment a pemaval VolumelRa) mlGenry 1%1 PmspMrus batl from Vmbeam Pnnl[es Ub) Untreated Plemphom Ptomectow Load Pemwetl as bP2tlim OM Prattla11b1 Remaining PMspMru[batl (Ib1 Drwmtrcam Namcetob Employee a'nal Aran Downs A_ Lb. alworw Aomn"..1 m p p p ann a.pp am v, amp aamm a/sa D I"O,AQ m o 0 o am o.m am am zn a rep b Flour rmox m w mu NPnn and Owd 'Pam a Par no'l Art lwro"eems[asl lsembe) m o 0 0 o am o.m am am 2,d . To Fry WAlor fr'jpram 9L a11lam Nl al 0 a, Own AN Ound Se. To dYWell aFrenm malnpi, MwoNfinnOon al par, re, ' road Fore M, 70 Ran 4araenel, leaoabretemienm(5[ernl 1s To lain careen tll, Mveeoreremlo. ul Llue[p91 He se All,O.m m 2h. TV Anvmer xarvmme 5ce[It) 0 0 0 o.m O.m ed ilwonetrr oneare"NPPPrrduPl an 0. nm Te. an-ARle Pavement At Open, M 0 0 0 0 am am am 3.h. Pbmeeon paveme I.0.0 . Da. D..ne AM .6 Dow an ran arrel VDsaearl lnH 4s Gnraenanne&-d..Awt Pmeneea5db . rYSnaleniSp'alqA,25 .. tlll5m[a101 aurbane[rmntian lsce[w)Gvn am to a6. 01anion Pl or an-VAreA. To Amex an 0 50 am an .a. Nfarrallon On C-MI 50 0 0 am am am one o. I.rarnaon Nlper, an, tureaurnation.) .le m re Isom rom 15 a a a 0 am re', All seas a Sn..No t. Pdyn 6 h.5h-A anA,a,TmSw treso:�:aI ba Asory m ed algDsr mnlm w m o a a o ITam IT NO dam dam Torµ IMPERVIOUSCOVFR iRFAIFOIa[I O.CO MFAONIX:OK RNµ MAHMEOTURFAREATREATEOIa[I 0. M6A OIEm.: 0. TOTAL RUNOFF REDUCTION IN DAL A IN') 0 TOTAL PNOSNaORUS AVAILABLE TOsu FmRPXORUSnEmwEo WlTnnonofFRE➢UCr:FoOnRCleaµ DA A U AV2.R6 O.m lOTµnIO ..a REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN DA A Ubi 1.66 SEE WATER QUALITY COMPLIANCE TAB FOR SIM COMPLIANCE CALCULATIONS e115prsam 0 0 0 0 0 0.m am aW 0.m .. a venl3saav) o pmmmalamtnn o 0 0 0 o m am am am am 11.E.'eame-OaNtp.arw p a p p p VAam am a.m am a convmged W enard (ID RR) IIIIIIIII�IIIIIIIIIIIII,IIIIIIIIIIIIIIII1IIIIIIIII�IIIIIIIII�IIIIIIIII�IIIIIII�IIIIIIIII�IIIIIIIII�IIIIIIIII�IIIIIIIII�IIIIIIIII�- 4L lspwxxq 13.G WnpvtlNNaeYINBMIre[n4, a a a a a d5 nm am am an Lie WNFetlRx Nxota n.a.wnemenlcnwlnan)npn, a a oAtam am v4..M aamnt Arse. n MmamamgM OUND AUG ot ' L46 M... f W,ed TreaNaROeMeMN 0 D. S.L 0 0 f$55 4$56 W D. la, lU LR A. AwAR WeaTaalme4pobbwk TOTAL IMPERVIOUS COVERTREATEDad 1.18 AREA CHECK: OIL TOTAL MANAGED TURF AREA TREATED Lad 0.67 AREA CHECK: DR. MAL PHOSPHORUS REMO. REQUIRED Milan payn 2.m MAL MMMORUS AVAILABLE FORREMOVµ IX DA AIIbtyd ]86 MTµ PHOSPHORUS REMOVED WITHOUT RUNOFF REDUCTION PRACTCEa IX DA AIIEVyi L34 TOTAL PHOSPHORUS REMOVED WIN RUNOFF REDUCTION PRALTCESINad AUb/yr) not TOTAL PHOSPHORUS LORD REDUCTICI IEVEDIN 0AAl1N' 1.14 MAL PHOEPHMM REMAINING AFTER APPLYING LAP b REME WIN DA A Dal L]1 SEE WATER QUALITY COMRIANCE TAB FOR SITE COMPLIANCE GL WLA ilONS Mm MEN REMOVEDWA RUMWREDUCTIOX NIACNCFSIX QAAUNYd O.OQ NITROGEN REMWm WITNOUT RUNOFF REDUCTION lff: CSIX DA A UVST) O.m TOTAL NITROGEN REMOVED IN DA A abi 0.00 Site Results (Water Quality Compliance) Area Checks D.A. A D.A. B D.A. C D.A. D DA. E AREA CHECK FOREST/OPEN SPACE (al 0.00 0.00 0.00 0.00 0.00 or. IMPERVIOUS COVER 111 1.18 0.00 0.00 0.00 0.00 OK. IMPERVIOUS COVER TREATED lilac) 1.18 0.00 0.00 0.00 0.00 OK. MANAGED TURF AREA (al 0.67 0.00 0.00 0.00 0.00 OK. MANAGED TURF AREA TREATED foci 0.67 0.00 0.00 0.00 0.00 OIL AREA CHECK OK. ON. ON. OK. OK. Site Treatment Volume (ft°) 4,902 Runoff Reduction Volume and TP By Drainage Area DA. A D.A. B D.A. C DA. E TOTAL RUNOFF REDUCTION VOLUME ACHIEVED(Re) 0 0 0 TP LOAD AVAILABLE FOR REMOVAL (Ib/yr) 2.86 0.00 0.00 nD 0.00 2.86 TP LOAD REDUCTION ACHIEVED (6/yr) 1.14 0.00 0.00 0.00 1.14 TP LOAD REMAINING (lb/yr) 1.72 0.00 0.00 0.00 0.00 1.72 NITROGEN LOAD REDUCTION ACHIEVED(Ilai 0.00 0.00 0.00 0.001 0.0il 0.00 Total Phosphorus FINAL POST -DEVELOPMENT TIN LOAD Phi 3.08 TP LOAD REDUCTION REQUIRED (Ib/yr) 2.07 TP LOAD REDUCTION ACHIEVED(Ib/yr) L14 TP LOAD REMAINING (Ib/yr): 1.94 REMAINING TP LOAD REDUCTION REQUIRED (Ib/yr): 0.93 Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (Ib/yr) 22.03 NITROGEN LOAD REDUCTION ACHIEVED (1111 0.00 REMAI INS POST -DEVELOPMENT NITROGEN LOAD(Ib/yr) xxxxxxxx22.03 112011 BMP Standards and Specifications 02013 Draft BMP Standards and Specifications Project name: 999 Rio Road Date: 3/3/2020 Linear Development Project? No Site Information Post -Development Project (Treatment Volume and loads) Enter Total Disturbed Area (acres) 0.35 1.as 0.13 rrerueletl lsM o Co Had, p'aded For d/mamgN Q91 091 1.23 1.23 Mee Cheri OK I off. I OR. OK. 2.14 Runoff Coefficients (Ry) PreaeOevel.N l Us@d dowe tl' Pont ReOev. Is New andervbus FaMVocenscemcmerlrmsl Q.3s Q.oQ FareWOPenzmucave. a.m esl Welddetl RKlmny GOOD am ed weigMetl Rvllmestl O.m %Fm.n 1" G% %fmxt 096 MmaptlTud CA[Mral 1.66 0.91 M-,dT oi W-0M(-M 0.91 0.20 Warned "urn 0.20 am %Managed Turf 78% 88% ra mpd Tun 43% attendee ewa(a.,) 1.23 RWire"imd 0.95 %Impervious 5M FI^I Site Amen al 2.14 Final ewtpar SbPer Obi Final Poll Doarlopmes Impervious Ewer, laves) 0.23 0.13 Rollmpervluuel 0.95 0.95 %lmperviaua 6% 13% Total Site Area Otred 2.14 1.04 slw No am On. Treatment Volume and Nutrient Load Pre- ReDevelopment Treatment Volume Iatre.Xl DOME 0,0255 Treatment Volume01125 (xre-R) nnal Poenowelopmen PrrRmeveloprrem Trcnmentvaume (tuGt he[) 1,692 1,1o5 Trexment Valumeesra Itubit Fen) Final Pre-ReDe lopmmt TPLoad 1.06 0.70 openPai[- Dereloprslert Tp Wad 3.08 ph/yrj pb/yd sal P PrtAenewboon mRLtatl Brave IINxrx"m n50 n6] Loaeperaaos�Oevel.'Ao Ld4 pe/ax/wff bcencemloMllMMI IOA11bJaW Nsrtdewbperrome atludi,ypervlous 0.03 ndprodrrm rltl prcpmei br rcx ImRmam mwd " AdbNd bed l'OmrSumrrw y naabYewwmntmmefowr minwpervbusbM Lsaer(/wnvoaan Roan wmmMLd I, ill mrmpa pmpxrelm mw xPeawvs magi. ", efusreemmon reage is mrWstmxwRb Posx-fleOercbpmenxmrerOe (mMa wepe af.... ewimperviovs coveq. '.. dmnn lsnaws lace reeuttlon Fwulkmemjwnewlmpervbwtvwr(bsetlmnm everopnremiovalimit 0.41 royxrc/FmrA '. dab Inpm cells an Cant values celmrtlon celN Lord rover PllrbbllMepllNm w er IamLl am WvieMetl Mdlpep] %ro etl G% Mam6ed Tud Uwr (or-) 0.91 Wmahl.deatern %M-AGEGITun 0.20 88% 0.13 ReOev. ImCePMD Career Uml ------ MlimPervbus) Q95 ............ %ImpBvrua 13% TBW R.Dev.9a.Am IRPMI La Re0w9b Rr 0.M Treatment Volume and Nutrient Poet-ReDevelopment Treatmemvoiume 0.0255 (acre ft) PosnpeDevelopment lrexm nt Valume l,lm Rubiched ReDevelNPlopment �at mac o.m 116/Yq' e-avreniR wadpe acre n6] o. ReauNanR o"m Irlw Pre. xml roawlmrmm oral BELVEDERE BLVD. VARIABLE WIDTH R/W DB 3772 PG 366 pmFOaLlapllanN inmD NeelmpenlNuf 1.10 (All von-DevdaPmem Trcatmem Volume (Resit) 0.0871 Post-O Trcatnwm Volume lmalc 3,793 halt) he0 rmwuvaw and TVl 2.38 pal TP Load Reduction Requireefor 0.14 Tp LW Reduttlm Ra.v fit New 1.33 Redeveloped Area ImpbMau Nr(Ib/yr) TO Load Red uction Req W red(Ibi 2.07 N itrogen Loads(Infm tional Purposes Only) oral PmeoevelognmtTx toad PrtReoevelopmentrnmaapb/yd z6O (PosCReoeMomem& A_lm=wW 21o3 (IWTd .- . , - - - I e I eI e I I DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet . VerslNlg01® Runoff Reduction Mmhod WoMehM BMW Design Specifications List. 2013 Draft Stake & Spada Site Summary Project TRIG: SS9 Rio Road Date: 4303 Total Ramfall(in), 43 Total Disturbed Acreage: 2.1,1 Site Land Cover Summary 0.00 0.35 O.OD 0.00 0.35 36 0.00 1.66 0.00 OAO L,66 78 ...... nnvnlnmm.ne 1..A r... r In ... Ol Ascib 0Nils CWll. DSaib Tobls %ofTobi Forest/Open(acres) 0.00 am am Ob0 0.00 0 Managed Tud(acrea) DOO 0.91 Ob0 Ci 0.91 43 ImpervioonCwerhanal I Dan 1 1.23 1 ace I Too 1.23 57 2.14 100 Site Tv and Land Cover Nutrient Loads Final Post-OevelopmeM Fort _ And. Atljusted Pre - (Pan-ReOevelopmmt ReDevelopment Development ReDevelopment & New lmpemioud New lmpervioml Site He 0.63 129 0.95 0.29 Treatment volume(fte) 41 1,309 3,793 1,109 TP Load (lb/yr) 3.06 0.70 238 0.70 Total TP Load Red uc[on Req It ired(lb/yr) La" 0.14 1.93 Final Post -Development Load (Post-ReDevelopment&New Impervious) Pre ReDevelopment TN Loatl 06/yr) 1 22.03 7.60 Site Compliance Summary Maximum% Reduction Required Below 20% PreNeDevtlopment Loatl Total Runoff Volume Reduction (FLY) 0 Total TP Load Reduction Achieved(Ib/yr) 1.M Total IN Load Reduction Achieved( ill am Remaining Post Development TP Load Pbl 1.94 Remaining TP Load Reduction "hall RfpuiM 0l Drainage Area Summary Pre - ReDevelopment TP final Post -Development Port-ReDevelapmem iP Loatl e 10 Load per acre Loatl per acre Ibalcree/l (lb/acre) lb/ldc l 0.67 LAG U.67 DAA OAB DAC D.A.D CIA }otel Forest/Open(acres) 0.00 am am pop 0.00 0.00 Managed Turf lacteal 0.0 Om om 0.00 Goal 0.6] Impervious Cover (acres) 1.18 am 0.00 0.00 0.00 1.18 Total Area( acres) 1.85 0.00 0.00 0.00 0.00 ].85 Drainage Area Compliance Summary ITN Land Reduced (Ib/yr) Drainage Area A Summary Land Corer Summary am I Om I Om I O.m 1 0.00 I am A SOW 0Sells CSells 0Suits Tosal 9601altal Forest/Open (emus) 0.00 0.00 0.00 0.00 0.00 0 Managed Tud(recres) 0.00 0.6] am 111 0.67 36 Impervious Cover (saes) am 1.0 0.m O.OD 1.18 64 1.8S BMPsekNa% Managed Turf Impervioustover BMP Treatment TO Load from untreated TP batl TP Remmetl TP Remaining Downstream Treatment Practice Cretlk Area CTatlk Area Volume(fts) upstream to PnNce(Ibs) (Ib/yr) (Ib/yr) to be Empbyed acres acres Pma m Ibs 14.1h.Manufactured Treatment De vice- 0.67 118 1,555.65 0.00 2.86L10 1.73 FIR-F.." Totallmpervious Cover Trearted(acres) 1.18 total Tuff Area Treated (acres) 0.67 Tote( Fe Wad Reduction Achieved In D.A. 1 b r Tons Id Wad Reduction Achieved in DA. Om b/ rl Summary Pdm r / 90 mi No. 45183 3��I�Z1c /k�11 SlirAT V�J VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 POST DEV VRRM MAP & CALCS C16 46 It inR% Manifold, Scour Fabric and Chamber Assembly Initial Anchoring of Chambers - Embedment Stone Backfill of Chambers - Embedment Stone and Cover Stone StormTech® ., r oelenfion•Refentlon•Wamr Duality - r StormTech Construction Guide Aefitidhno Y a' -- REQUIRED MATERIALS AND EQUIPMENT LIST w StormTech solid end caps and pre -cored end caps • Acceptable fill materials per Table 1 a StormTech chambers :i -.• = �� `- ' w Woven and non woven geotextiles • StormTech manifolds and fittingsAll i IMPORTANT NOTES: A. This installation guide provides the minimum requirements for proper installation of chambers. Non-adhem me to this guide may result in damage to chambers �'� I I' t duringinstallation. Replacement of damaged chambers during or after backLllin is co and very time consuming. It is recommended that all installers are familiar � P 9 9 9� Styr ry g- whh this guide, and that the contractor inspects the chambers for distortion, damage and joint integrity as work progresses. .- - Install manifolds and la out woven scour , Y Align the first chamber and end cal of each 9 P - Construct the chamber bed b overlapping the Y PP 9 Initial embedment shall be spotted along the centerline of the chamber evenly equipment shall be operated on the bed at this stage of the installation. Continue evenly backfilling between rows and around perimeter until embedment Small dozers and skid loaders may be used to finish grading stone backfill in B. Use of a dozer to push embedment stone between the rows of chambers may cause damage to chambers and is not an acceptable backfill method. An chambers P Y 9 p Y geotextile at inlet rows [min. 12.5 it (3.8 m)] at row with inlet pipes. Contractor may choose to chambers lengthwise in rows. Attach chambers by anchoring the lower portion of the chamber. This is best accomplished with a 9 P P �No Excavators must be located off the bed. Dump trucks shall not dump stone P P isreaches tops of chambers. Perimeter stone must extend horizontally to P Y accordance with round pressure limits in Table 2. The must push material 9 P Y damaged by using the"dump and push" method are not covered under the StormTech standard warranty. each inlet end cap. Place a continuous piece postpone stone placement around end chambers overlapping the end corrugation of one chamber on stone conveyor or excavator reaching along the row. directly on to the bed. Dozers or loaders are not allowed on the bed at this time. the excavation wall for both straight or sloped sidewalls. Only after chambers parallel to rows only. Never push perpendicular to rows. StormTech recom- (no seams, double layer) along entire length of and leave ends of rows open for easy inspection to the end corrugation of the last chamber in the row. have been backfilled to top of chamber and with a minimum 6" (150 mm) mends that the contractor inspect chambers before placing final backfill. Any C. Care should be taken in the handling of chambers and end caps. Avoid dropping, prying or excessive force on chambers during removal from pallet and initial placement. Isolator® Row(s). of chambers during the backfill process. Be sure that the chamber placement does not exceed the reach of the construction equipment used to place the stone. - Embedment Stone of cover stone on top of chambers can small dozers be used over the chambers for backfilling remaining cover stone. chambers damaged by construction shall be removed & replaced. Requirements for System Installation Final Bacldlll of Chambers - FIII Material StormTech Isolator Row Detail Attaching the End Caps Prefabricated End Caps Isolator Row �II v a I P ..' EMIT 901ATOAEN GEQ EO6VNME TI Set .8 MAAmwIM NWIOTESTEE SI 505mWeviDESTRIP CPT fl451NOR krt MrWHota .�. .i .♦ rts k C-ANDER IsI SHOWN) 1a0,,, -,,,Ik III III IIF„ILr-�W CIIIJI�WiIr-)r - L i3m_a,i v L t I UNEVEN BACKFILL EVEN BACKFILL PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFILLED - " J flu O - Backfill chambers evenly. Stone Column height should never differ by more than Perimeter stone must be brought up evenly with chamber rows. Perimeter � srIR E BESIGN 6slgN ENGNvER 12" (300 mm) between adjacent chamber rows or between chamber rows and must be fully backfilled, with stone extended horizontally to the excavation wall. ee�EUXYEIUE °6 1EI°«Foo;w:oNSTQNE' NQ0IwM6ERs Excavate bed and prepare subgrade per Place non -woven geotextile over prepared soils Place clean, crushed, angular stone foundation ' perimeter P Install non -woven geotextile over stone. Geotextile must overlap 24" (600 mm) SF1«B LOGl6o-Mn.5m)MIN WIDE61RIPS s ne.4nEarme3 'sm)MINveD engineer's tans. and a excavation walls. 6" 150 mm min. Install underdrains if require 9 P p ( ) q Lift the end of the chamber a few inches off the 24" (600 mm) inlets are the maximum size that can fit Drape a strip of ADS non -woven geotextile over the min. where edges meet. Compact each lift of backfill as specified in the site sc 1. 1T.7ae. nOHDDmmlH SQRRE�a"IP" i6ouroxoCHAMBERS Compact to achieve a flat surface. ground. With the curved face of the end cap facing into a SC-740/DC-780 end cap and must be prefabri- row of chambers (not required over DC-780). This is design engineer's drawings. Roller travel parallel with rows. lsrio; REOMiReo. I6W`E'F:c:'oa;•°PaE:Fe"a°PRIEr..TEDoIc'Eao - outward, place the end cap into the chamber's end Corrugation. Sated with a 24' (600 mm) pipe stub. SC-310 Sham- bers with a 12" (300 mm) inlet pipe must use a the same type of non -woven geotextile used as a Separation layer around the angular Stone of the Call StormTech at 888.892.2694 for technical and product information or visit witw.stormlech.com 3 Call StormTech at 888.892.2694 for technical and product information or visit www.stormlech.com 4 Call StormTech at 888J3922894 for technical and product information or visit www.stormtech.com 1 prefabricated end cap with a 12' (300 mm) pipe stub. StormTech system. 2 1.0 The Isolator® Row Save Valuable Land and Invention."�""" `""0 AaGvistanof 1.1 INMODUCIION Protect Water Resources An important component of any Stormwater Pollution Prevention Plan is inspection and maintenance. The StormTech Isolator Row is a patented technique to inexpensively enhance Total Suspended Solids (TSS) _-_ - removal and provide easy access for inspection and maintenance. ®I_ Looking down the Isolator Row from the manhole opening. Woven geotextile is shown between the chamber and stone base. t+ -� 1.2 THE ISOLATOR ROW The Isolator Row is a row of StormTech chambers either SC31Q SC-3103, SC-740, DC-780, MC3500 or MC- 4500 models, that is surounded with filter fabric and con- nected to a closely located manhole for easy access. The febriowrapped chambers provide for settling and filtra- tion of sediment as storm water rises in the Isolator Row and ultimately passes through the filter fabric. The open •: bottom chambers and perforated sidewalls (SC310, SC- 310-3 and SC-740 models) allow storm water to flow both vertically and horizontally out of the chambers. Sediments are captured in the Isolator Row protecting the storage areas of the adjacent stone and chambers from sediment accumulation. Two different fabrics are used for the Isolator Row. A Woven geotextile fabric is placed between the stone and the Isolator Row chambers. The tough geotextile provides a media for storm water filtration and provides +A a durable surface for maintenance operations. It is also designed to prevent scour of the underlying stone and remain intact during high pressure jetting. A non -woven fabric is placed over the chambers to provide a fitter media for flows passing through the perforations in the sitlewall of the chamber. The non -woven fabric is not required over the DC-780, MC-3500 or MC-4500 models as these chambers do not have perforated side walls. Isolator Row 0&M Manual StormTech® Chamber System for Stormwater Management 2.0 Isolator Row Inspection/Maintenance 2.1 INSPECRON The frequency of Inspection and Maintenance varies by location. A routine inspection schedule needs to be established for each individual location based upon site specific variables. The type of land use (i.e. industrial, commercial, residential), anticipated pollutant load, per- cent imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual Inspec- tions. Initially, the Isolator Row should be inspected every 6 months for the first year of operation. For subsequent years, the inspection should be adjusted based upon previous observation of sediment deposition. The Isolator Row incorporates a combination of standard manholes) and strategically located inspection ports (as needed). The inspection ports allow for easy access to the system from the surface, eliminating the need to perform a confined space entry for inspection purposes. If upon visual Inspection it is found that sediment has accumulated, a stadia rod should be inserted to deter- mine the depth of sediment. When the average depth of sediment exceeds 3 inches throughout the length of the Isolator Row, clean -out should be performed. 2.2 MAINTENANCE The Isolator Row was designed to reduce the cost of periodic maintenance. By 'isolating" sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for main- tenance, access is provided via a manhole(s) located on the ends) of the row for cleanout. If entry into the manhole is required, please follow local and OSHA rules for a confined space entries. StormTech Isolator Row (not to scale) StormTedbly Examples ofoWrt cleaning nozzles appropnale for Isolator Row maintenance. (These are hot StormTech products) Maintenance is accomplished with the JetVac process. The JetVac process utilizes a high pressure water noz- zle to propel itself down the Isolator Row while scouring and suspending sediments. As the nozzle is retrieved, the captured pollutants are flushed back into the man- hole for vacuuming. Most sewer and pipe maintenance companies have vacuum/JetVac combination vehicles. Selection of an appropriate JetVac nozzle will improve maintenance efficiency. Fixed nozzles designed for cul- verts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45" are best. Most JetVac reels have 400 feet of hose allow- ing maintenance of an Isolator Row up to 50 chambers long. The JetVac process shall only be performed on StormTech Isolator Rows that have AASHTO class 1 woven geotextile (as specified by StormTech) over their angular base stone. NKL' NON -WOVEN FABRIC IS ONLY REQUIRED OVER THE INLET PIPE CONNECTION INTO THE END CAP FOR DG780, MC-3500 AND MC-4500 CHAMBER MODELS AND IS NOT REQUIRED OVER THE ENTIRE ISOLATOR ROW. Call StormTech at 898292.2694 or visit our webshe at www.atarmteeh.com for technical and product Information. 3 The Isolator Row is typically designed to capture the "first flush" and offers the versatilhy to be sized on a vol- ume basis or flow rate basis. An upstream manhole not only provides access to the Isolator Row but typically includes a high flow weir such that storm water flowrates or volumes that exceed the capacity of the Isolator Row overtop the over flow Weir and discharge through a manifold to the other chambers. The Isolator Row may also he part of a treatment man. By treating storm water prior to entry into the chamber system, the service life can be extended and pollutants such as hydrocarbons can be captured. Pre-treatment best management practices can be Be simple as deep sump catch basins, oil -water separators or can be in co- vative storm water treatment devices. The design of the treatment Vain and selection of pretreatment devices by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, the Isolator Row is recommended by StormTech as an effective means to minimize maintenance requirements and maintenance costs. Note: See the StormTech Design Manual for detailed information on designing inlets for a StormTech system, including the Isolator Row. StormTech Isolator Row with Overflow Spillway not to scale WITH OVERFLOW WEIR ECCENTRIC - HEADER STORMTECH r ISOLATOR ROW WMIN IIIEIIIEE>fIIIEIIIE �MEa�� MEl�� ME s� OPTIONAL \ STORMIECH CHAMBERS ACCESS 2 Call StormTech Be W&e92.2604 or visit our webs0e at w "rurleeh.mm for technical and product information. 3.0 Isolator Row Step By Step Maintenance Procedures Slop 11 Inspect Isolator Row for sediment StormTech Isolator Row motto scale) A) Inspection ports (if present) - 1. Remove lid from floor box frame ii. Remove cap from inspection riser iii. Using a flashlight and stadia rod, measure depth of sediment and record results on maintenance log. iv. If sediment is at, or above, 3 inch depth proceed to Step 2. If not proceed to step 3. B) All Isolator Rows 1. Remove Cover from manhole at upsUeam end ct Isolator Row ii. Using a flashlight, inspect down Isolator Row through outlet pipe 1. Mirrors on poles or cameras may be used to avoid a confined space entry 2. Follow OSHA regulations for confined space entry if entering manhole iii. If sediment is at or above the lower row of sitlewall holes (approximately 3 inches) proceed to Step 2. If not proceed to Step 3. Slop 21 Clean out Isolator Row using the JetVac process A) A fixed culvert cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable B) Apply multiple passes of JetVac until backflush water is clean C) Vacuum manhole sump as required Step S) Replace all caps, lids and covers, record observations and actions Step 4) Inspect & clean catch basins and manholes upstream of the StormTech system Sample Maintenance Log StormAw, IAii Tech® Defeat% -Re on - Wisher carry A division of 70 Instead Road, Suite 3 Rocky Hill I Connecticut 106067 660.529.816E I MB.892.2694 fax 865.328.M01 I w ..stomltech.mm ADS'rerms and Conditions of Sale' are available on the ADS aebsile, wwxadsTlipe.com Advanced Drainage Systems, the ADS logo, and the green stripe are registered trademarks of Advanced Drainage Systems. Stormteche and the Isolator® Row are registered trademarks of Stomn 1, Inc. Green Building Council Member logo is a registered trademark of the U.S. Green Building Council. C 2013 Advanced Drainage Systems, Inc. S09M 02113 Table 1-Acceptable Fill Materials Figure 1 - Inspection Port Detail n!=l FLEXSTORM CATCH o (IFSPECIIFIEB Ivl OBE) NECEDOt TO BE CE IONCR OI COPNVGFigNCREG' PLEASENOTE: 1. the listed AASNTO designations are for gtadations only. The stone must also be clean, crushed, angular. For example, a specification for rid stone would state: "clean, crushed, angular no. 4 b ASRTO M43) stage". 2. Stmm ech compaction requirements are met for'W lersum materials unimproved and compacted in 6"(15ommJ (max) lift using two full coverages with a vibratory compactor. 3. Where infilmosion surfaces maybe comprised by compaction, for standard installaftons and standard design load conditions, a flat surface may be achieved by taking or dragging without compaction equipment. For special load designs, contact StormTech for compaction requirements. Figure 2-Fill Material Locations PEWMETER6 E 1eNSg_)MINw101" _ or NTO.E-BE Neo v s%QoF.Ecx Exc NEER �SG740&6C--BID 1PIB00mmIMIN air 6UBORELE 801L8 J B'n50mm)MN BOB&] SrggL'mmI MIN (15➢mm)MXi 1R"(tl]mm)TYP StormTech at 888.8922694 for technical and product information or visit www.stormtecti com 1S,]BB mm)NyUOR,UTINLINE BRAIN WOV Wsouo HwGEn pWEROR°R9TE gRW 271.1.N WLILIIDCMEER. 1mQNxE cc3 1onl)lie,ensx.12 EmUgER117ws10WNl Ones haver er C Is pla try so Vmateriel can ha plarod In layer D' pmmagnwhea g.it.. Mast pevarwd V bbo&a &o h can be used In replace the materials ReUremwnb d Slyer cox omnne design alpineef6 e guess 5 1. 36"(900mm) re stabifaed covernedenals overthe chambers is required for full dump truck travel and dumping. 2. During paving operations, dump truckaxle loads on 18" (450 mm) of cover may be necessary. Precautions should be taken to avoid rutting of the road base layer, to ensure that compaction requirements have been met, and that minimum of 18" (450 mm) of cover exists over the chambers. Contact StormTech for additional guidance on allowable axle loads during paving. 3. Ground pressure mrtrack dozers is the vehicle operating weight divided by total ground contact area for both tracks. Excavators will exert higher ground pressures based on loaded bucket weight and boom extension. 4. Mini -excavators (<60001150,628 kg) can be used with at least 12" (300 mm) of stone over the chambers and are limited by the maximum ground pressures in Table 2 based on a fug bucket at maximum boom extension 5. Storage of materials such as construction materials equipment, g spoils, etc. should not be located over the StormTech system. The use of equipment over the StormTech system not covered in Table 2 (ex. soil mixing equipment, cranes, etc) is limited. Please contact StormTech for more information. 6. Allowable track loads based on vehicle travel only. Excavators shall not operate on chamber beds until the total backirll reaches 3 teat (900 mm) over the entire bed. and Conditions of Sale" are available on the ADS whole, Boom. ainage Systems, the ADS logo, and the green stripe are registered d Advanced Drainage Systems. and the Isolator® Row are registered trademarks of StormTech, Inc Advanced Drainage Systems, Inc. Table 2-Maximum Allowable Construction Vehicle Loads' r t ® Final Fill 36" [9001 32,000 [1421 16,000 [711 1213051 3420 [164] 380D0 [1691 Material Compacted 18' [4571 2350 [1131 24-[6101 1850[891 30' [7621 1510 [721 36' 19141 1310 [631 © mein RII 24" [6001 32,OD0 [1421 16,000 [711 12' [3051 2480 [1191 20,OD0 [89) Malarial Compacted 18' 14571 1n0 [851 24'[6101 1430[681 30' [7621 1210 [581 36' [9141 1070 [511 24' [6001 a2,OL0 [1421 16,000 [711 12' 13051 2245 [1071 20,0D0 [891 Loose/Dumped 18'[4571 1625[791 Roller gross vehicle weight not to 24'[6101 30' [7621 1325[631 exceed 12000 Its, [53 kN1 1135[541 3619141 1010 18'[4501 a2,000[1421 16,000[711 j8'I457I [[[481 2010[96I 20.00eweight Roller gross vehicle not to 24' [6101 30 [7621 1220 SIR exceed 12000 Its. [53 kN] 1060[511 36'[9141 960[451 ® Embecrem 12' [3001 16,OD0 [711 NOT ALLOWED 12' [3051 1540 [741 20,000 [891 Stone 18'[4571 1190 [571 Roller gross vehicle weight not to 24' [6101 30' [7621 1010 [481 910 [431 exceed 121000IRS. [53 kN1 36' 914 1 9401401 6"U50] IkOW[351 NOTALLOWID 12'[3051 1" [51] NOT ALLOWED 18'[4571 900[431 24'[fi101 8001381 30'p621 7fi0 [361 36'[9141 720 [341 Call StormTech at 888.892.2694 for technical and product information or visit wwwstormterch.com 6 SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM I lq `fr' H Pd. No. 45183 SIn7,rAT V�J VSMP PLAN 999 RIO ROAD ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2021.01.08 REVISION: 1) 2021.03.11 FILE NO. 19.006 BMP INSTALLATION & MAINTENANCE C18