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HomeMy WebLinkAboutWPO202000028 Plan - VSMP 2023-02-14VSMP PLAN AMENDMENT LEGEND EXISTING NEW DESCRIPTION BOUNDARIES BENCHMARK SITE PROPERTY LINE — — — — ADJACENT PROPERTY LINE BUILDING SETBACK ❑ PARKING SETBACK SITE TEXT 10 10 PARKING COUNT TOPOGRAPHY — — — — INDEX CONTOUR INTERVAL CONTOUR 311.5 xn SPOT ELEVATION 311.5 TC x TOP OF CURB ELEVATION 311.5 TW xn� TOP OF WALL ELEVATION 311.5 BW x� BOTTOM OF WALL ELEVATION — ... - ... — STREAM STREAM BUFFER 100 YEAR FLOODPLAIN BUILDING BUILDING RETAINING WALL STAIRS EDGE OF PAVEMENT ROAD CENTERLINE FRONT OF CURB BACK OF CURB CG-12 TRUNCATED DOME SIDEWALK BIKE PARKING IIZZZIA HANDICAP ACCESSIBLE AISLE HANDICAP PARKING MATERIAL 0 CONCRETE RIPRAP — ASPHALT EC-2 MATTING EC-3 MATTING 0 WETLAND TREELINE X X FENCE UTILITY UTILITY POLE m 0 GUY WIRE oHu OHu OVERHEAD UTILITY ucu ucu UNDERGROUND UTILITY STORM STORM MANHOLE q q DROP INLET STORM SEWER ® ROOF DRAIN SANITARY SANITARY MANHOLE SANITARY SEWER MAIN S S SANITARY SEWER LATERAL WATER W W WATER LINE 0 0 WATER METER 0 WATER METER VAULT FIRE HYDRANT A A FIRE DEPARTMENT CONNECTION GAS GAS GAS LINE EASEMENTS CONSTRUCTION GRADING ACCESS SIGHT DISTANCE UTILITY STORMWATER FACILITY MAINTENANCE / SWIM STORMWATER ACCESS DRAINAGE SANITARY WATERLINE GASLINE NOTE: 1. THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOWN. REGENTS SCHOOL OF CHARLOTTESVILLE OWNER/DEVELOPER Regents School of Charlottesville Inc. 3045 Ivy Road Charlottesville, Virginia 22903 PLAN PREPARATION Shimp Engineering, P.C. 912 East High Street Charlottesville, VA 22903 (434) 227-5140 ZONING EC - Entrance Corridor R1 - Residential SP201800011 approved on September 18, 2019 permitting a private school use on the site MAGISTERIAL DISTRICT Samuel Miller SOURCE OF TITLE DB 5237 P 251 DB 660 P 780 (plat) SETBACKS Front: 5' Side: 10' Rear: 20' SOURCE OF BOUNDARY AND TOPOGRAPHY Boundary is based on field survey by: Dewberry Engineers Inc. 4805 Lake Brook Drive Glen Allen, Virginia 23060 Provided on 05/11/2018, field verified by Justin Shimp, P.E. 10/22/2019 Topographic survey with two foot (2') contours provided by Quantum Spatial Topography of four foot (4') contours provided by Albemarle County GIS. BENCHMARK Datum for topography is NAVD 88 FLOODZONE These parcels lie within FEMA flood zones "X" and "A" as defined on FIRM map 51003CO268D, dated February 4, 2005. RESERVOIR WATERSHED This site is within the Moores Creek Watershed and the creek shown is a tributary of Moores Creek. Wetlands have not been identified on these parcels. This site is not within a watershed of a public water supply. WATER & SANITARY SERVICES This project lies within the ACSA jursidictional area for both water and sewer. Access to existing water and sewer service is available. EXISTING USE Vacant Land PROPOSED USE Private School (Grades K-12) LAND USE SCHEDULE EXISTING Area % Building 0 SF 0% Pavement 0 SF 0% Sidewalk 0 SF 0% Undeveloped Area 832,431.E SF 100.0% Total= 832,431.6 SF (19.11 ac.) PROPOSED Area % Building 35,920 SF 4.3% Pavement 40,025 SF 4.8% Sidewalk 30,432 SF 3.7% Undeveloped Area 725,676 SF 87.2% Total= 832,431.6 SF (19.11 ac.) LIMITS OF DISTURBANCE 9.55 acres disturbance proposed. STREAM BUFFER DISTURBANCE 2,136 sf stream buffer disturbance proposed. Mitigation planting required at a 2:1 ratio of disturbance. 2,136 sf x 2 = 4,272 sf Option 1a replanting - for every 400 sf unit or fraction thereof, plant one (1) canopy tree measuring 1.5"-2" caliper, one (1) understory tree measure 0.75"-1.5" caliper, and one (1) small shrub 15"-18" in height. is specified on Sheet C11. 4,272 sf / 400 sf = 10.68 Required Mitigation Plantinq:11 canopy trees, 11 understory trees, 11 shrubs Provided Mitigation Planting: 11 canopy trees, 11 understory trees, 11 shrubs FOREST AND OPEN SPACE / SWM EASEMENT 1) 5.48 acres Forest and Open Space / SWIM Easement proposed. 2) The Forest and Open Space Easement is subject to the guidance set forth by DEQ in the Virginia Stormwater Management Program. The areas will remain undisturbed in a natural, vegetated state, except for activities as approved by WP0202000028 TAX MAP 75, PARCEL 66 TAX MAP 76, PARCEL 17 ALBEMARLE COUNTY, VIRGINIA VICINITY MAPSCALE:1°=1000' Ragged Mountain Home /LLC L Virginia Eagle Distributing Co the local program authority, such as forest management, control of invasive species, replanting and revegetating, passive SH EET I N D EX recreations (e.g. trails), and limited bush -hogging to maintain desired vegetative community (but no more than four times a _______ ear, except as permitted by existing easements and agreements). Furtherthe construction installation relocation repair, 1,CL1_g_QKEnJ Revised Sheet replacement, operation, and maintenance of new or existing public utility structures and facilities shall be permitted as r-------------------------� E&SC NARRATIVE, Revised Sheet described in existing and future utility easements and agreements. �C2 __ 3) No buildings, structures, or permanent roads (public or private) are permitted in SWIM Open Space areas, except for r------ ------------------- ' C3 SITE OVERVIEW' Revised Sheet structures and facilities associated with public or private utilities es, valves, manholes, etc. provided, however, that after P P (PP )P �------------------------� construction, installation repair, replacement, operation, maintenance or removal of such utilities, any disturbed soil shall be r-C--4 ----------P----------i E&SC HASE 1; Revised Sheet restored to its original condition or an engineered soil mix shall be placed per the design specifications, and the SWIM Open L-- Space area or areas shall be returned to a natural vegetated state. r -� E&SC PHASE 11 Revised Sheet 4) Areas of Forest/Open Space are to be demarcated (fenced off) prior to land disturbance. �C5__ ________-1 r-------------- �C6__ E&SC PHASE 2; Revised Sheet AMENDMENT NARRATIVE r--=----------- --------i ' C7 E&SC PHASE 2' Revised Sheet The original plan, WP0202000028 Regents School of Charlottesville, was approved on December 16 2021. This ------ ------------- -- -J --------------- amendment increased the (LOD) Limits of Disturbance area by 0.79 Acres, the scope of this amendment adds a large L C8 E&SC PHASE 2; Revised Sheet athletic field, a small wamr-up field and the additional classrooms, located adjacent to the athletic field,------------------- ------------------- L C9 E&SC PHASES Revised Sheet r----------------------� C10 E&SC PHASE 31 Revised Sheet r---------------------------------------------i 1 C11 E&SC PHASE 3 / MITIGATION PLAN; Revised Sheet L---------------------------------------- ' C12 STORM PROFILES ' Revised Sheet L--------------------------J � C13_ SANITARY PROFILES; Revised Sheet C14 E&SC DETAILS Revised Sheet C1---VRRM DRAINAGE MAPS Revised Sheet —5_— r C16 PRE DEVELOPMENT DRAINAGE MAPS Revised Sheet �_ _, L --------------------------------------------- C17 POST DEVELOPMENT DRAINAGE MAP, Revised Sheet Not included in the Amendment: L_� Point Analysis has not changed channel protection and Flood protection r---------------------------------------� ' C19 STRUCTURES DRAINAGE MAP' Revised Sheet compliance has not changed, L____________J L= y ;BUCKINGHAM 1 - BALMORAL HEIGHTS 1 `RESER veir AD Univershy y Montasson School V Fontaine Research Park 4 Trinity Presbyterian Church Aromas Cafe and Catering , IMAGE PROVIDED BY GOOGLE MAPS SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM Lt ,No.45183 �' ��F �� �4Q' `VSIONAL E-, VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 09.14.2022 REVISION: 1. VSMP Amendment Comments 11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. COVER 18.020 C1 PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS PROJECT PROPOSES A PRIVATE SCHOOL WITH SEVERAL BUILDINGS AND RECREATIONAL AREAS ON WHAT IS CURRENTLY VACANT LAND. THE TOTAL AREA OF DISTURBANCE IS 9.55 ACRES. EXISTING SITE CONDITIONS ALL WORK SHALL BE COMPLETED ON THE SUBJECT PARCELS, ALBEMARLE COUNTY TMP 75-66 & 76-17. ON -SITE SLOPES ARE SOUTHEAST FACING AND AVERAGE 15%. THE SITE IS CURRENTLY HEAVILY WOODED. STORMWATER FLOWS INTO AN EXISTING STREAM FROM RAGGED MOUNTAIN RESERVOIR THAT EVENTUALLY LEADS TO MOORES CREEK. THIS PROPERTY IS BORDERED TO THE NORTH BY RESERVOIR ROAD; TO THE EAST BY TRINITY PRESBYTERIAN CHURCH; TO THE SOUTH BY THE U.S. 29 ENTRANCE RAMP TO 1-64W; AND TO THE WEST BY A VACANT PARCEL OWNED BY CLINTON KISNER. SOILS THIS SITE CONTAINS THE FOLLOWING SOIL TYPES BASED ON NRCS SOIL MAPS FOR ALBEMARLE COUNTY VIRGINIA: 14C - CHESTER LOAM 7-15% SLOPES 19B - MINNIEVILLE LOAM 2-7% SLOPES 19C - MINNIEVILLE LOAM 7-15% SLOPES 19D - MINNIEVILLE LOAM 15-25% SLOPES 77 - DAN RIVER-CODORUS COMPLEX 0-2% SLOPES OFFSITE AREAS: EXCESS MATERIAL SHALL BE HAULED TO A SITE WITH AN APPROVED EROSION AND SEDIMENT CONTROL PLAN. CONTRACTOR SHALL PROVIDE THE LOCATION OF AN APPROVED WASTE AREA AT THE TIME OF THE PRE -CONSTRUCTION MEETING. THE LOCATION MUST BE INCLUDED IN THE ON -SITE SWPPP. CRITICAL AREAS THERE ARE NO CRITICAL EROSION AREAS ON THE SUBJECT PARCEL. EROSION & SEDIMENT CONTROLS 1. CONSTRUCTION ENTRANCE: INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND CONFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 2. SILT FENCE: INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.05. THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FENCE SHALL BE INSPECTED AND MAINTAINED TO ENSURE CONTINUED PERFORMANCE. 3. TEMPORARY SEDIMENT TRAP: A TEMPORARY SEDIMENT TRAP SHALL BE INSTALLED PER THE EROSION AND SEDIMENT CONTROL PLAN FOR THE PURPOSE OF DETAINING SEDIMENT AND SILT WITHIN STORM WATER RUNOFF. THE TRAPS SHALL REMAIN IN PLACE UNTIL THE SITE IS STABILIZED UNLESS OTHERWISE NOTED ON THE PLAN. 4. TEMPORARY SEEDING: 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 30 DAYS. TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31. 5. PERMANENT SEEDING: ALL DENUDED AREAS SHALL BE SEEDED IN CONFORMANCE WITH STD. AND SPEC. 3.32. PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. 6. DUST CONTROL: CONDUCT DUST CONTROL OPERATIONS NECESSARY TO MET THE REQUIREMENTS OF STD. & SPEC. 3.39 AS REQUIRED TO CONTROL SURFACE AND AIRBORNE MOVEMENT OF DUST. 7. INLET PROTECTION: A STONE WEIR SHALL BE INSTALLED AS A SEDIMENT FILTER LOCATED AT THE PROPOSED DROP INLET. REFER TO DETAILS ON SHEET C11. 8. TEMPORARY DIVERSION: TEMPORARY DIVERSION SHALL BE INSTALLED AS SHOWN ON THE EROSION AND SEDIMENT CONTROL PLAN AND DETAILS. THE DIVERSIONS SHALL BE INSTALLED PRIOR TO SIGNIFICANT LAND DISTURBING ACTIVITIES AND SHALL REMAIN IN PLACE UNTIL THE SITE IS STABILIZED UNLESS OTHERWISE NOTED ON THE PLAN. MANAGEMENT STRATEGY AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: PHASE 1 1. INSTALL CONSTRUCTION ENTRANCE. 2. INSTALL SEDIMENT TRAPS 1,2, AND 3 WITH ASSOCIATED SILT FENCE. 3. INSTALL DIVERSION DIKES. 4. CALL COUNTY INSPECTOR FOR APPROVAL OF EROSION AND SEDIMENT CONTROL MEASURES. 5. UPON APPROVAL, BEGIN MASS GRADING OF SITE. 6. PROTECT SOIL STOCKPILES WITH SILT FENCE AND TEMPORARY SEEDING AS NECESSARY. 7. TRANSPORT DIRT FROM PARKING LOT AREA TO FIELD AREA. PHASE 2 1. ONCE SITE IS BROUGHT TO GRADE, INSTALL STORM PIPE A3-A4 WITH CONNECTION A3a. DO NOT INSTALL MANHOLE A2 IN THIS PHASE, INSTEAD DIG SMALL CONVEYANCE CHANNEL FOR PIPE Al AND C1 TO OUTLET TO SEDIMENT TRAP 2. 3. BRING FIELD TO GRADE. 4. IF TOO MUCH WATER COLLECTS ON EASTERN HALF OF FIELD, PUMP IT TO SEDIMENT TRAP 1. 5. STABILIZE FIELD AREA WITH PERMANENT SEEDING. 6. BEGIN WATER & SANITARY INSTALLATION. INSTALLATION. 3. STABILIZE PARKING AREA WITH BASE STONE. 4. ONCE PARKING AREA IS STABILIZED, INSTALL STRUCTURE A2 AND PIPE A2a-A2 AND 6. KEEP INLET PROTECTION IN PLACE UNTIL ENTIRE SITE IS STABILIZED. 7. REMOVE SEDIMENT TRAPS, BRINGING THOSE AREAS BACK TO ORIGINAL GRADE. APPLY PERMANENT SEEDING AND LOW MAINTENANCE GROUND COVER WHERE SLOPES ARE 3:1 OR STEEPER. 8. INSTALL MITIGATION PLANTING IN DISTURBED STREAM BUFFER AREA PER PLANTING 9. ESC INSPECTOR MAY REQUIRE ADDITIONAL OR ALTERNATE CONTROLS THAT THE PLAN DOES NOT SHOW. 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. 3. 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. 4. 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. 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 USING EMISSION -CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUTTING DOWN MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. 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. GENERALNOTES 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. FIELD DENSITY TESTS SHALL BE PERFORMED AT A FREQUENCY OF ONE TEST PER LIFT PER 10,000 SO FT OF MATERIAL PLACED AND COMPACTED TO WITHIN 95 (%) PERCENT OF STANDARD PROCTOR USING A GRID PATTERN OF 100 FT PER LIFT/OR AS CERTIFIED BY A LICENSED GEOTECHNICAL ENGINEER. rsTORMWATER MANAGEMENT: I RUNOFF FROM THE SITE IS ANALYZED AT TWO POINTS, LABELED PDA A AND PDA B. THE I PROPOSED STORMWATER DESIGN FOR THE POINT PDA A MEETS WATER QUALITY I REQUIREMENT SET FORTH IN 9VAC25-870-66-B.1.A AND 9VAC25-870-66.C.3.A. AND FOR THE I POINT PDA B MEETS 9VAC25-870-66. B.3.A. AND 9VAC25-870-66. C.2.B _ VSMP AMENDMENT DESCRIPTION WP0202000028 REGENTS SCHOOL OF CHARLOTTESVILLE, WAS APPROVED ON DECEMBER 16 2021. THIS AMENDMENT INCREASED (LOD) LIMITS OF DISTURBANCE AREA BY 0.79 ACRES, THE SCOPE OF THIS AMENDMENT ADDS A LARGE ATHLETIC FIELD, A SMALL WARM-UP FIELD AND THE ADDITIONAL CLASSROOMS, LOCATED ADJACENT TO THE ATHLETIC FIELD. SWM QUANTITY THE DRAINAGE AREA TO PDA A AT MOORES CREEK STREAM IS LOCATED AT THE SOUTH OF THE PROPERTY. THE DRAINAGE AREA TO PDA A WAS ANALYZED AND FOUND TO BE IN COMPLIANCE WITH THE CHANNEL PROTECTION REQUIREMENTS 9VAC25-870-66-B.1.A AND FLOOD PROTECTION REQUIREMENTS 9VAC25-870-66.C.3.A. RUNOFF FROM THIS DRAINAGE AREA IS CONVEYED IN A RIPRAP CHANNEL TO THE MANMADE PORTION OF STREAM MENTIONED ABOVE, WHERE IT IS LESS THAN 1% OF THE OVERALL DRAINAGE AREA AT THAT POINT. SHEET C6 SHOWS THE DELINEATION OF SITE AREA VERSUS TOTAL DRAINAGE AREA TO PDA A IN MOORES CREEK. THE DRAINAGE AREA TO PDA B WAS ANALYZED AND FOUND TO BE IN COMPLIANCE WITH CHANNEL PROTECTION REQUIREMENT 9VAC25-870-66-B.3.A AND FLOOD PROTECTION REQUIREMENTS 9VAC25-870-66-C.2.B. RUNOFF FROM THIS DRAINAGE AREA IS CONVEYED IN A PIPE AND OUTLETS TO A NATURAL STREAM WHICH EVENTUALLY DRAINS INTO MOORES CREEK AT RATES WHICH SATISFIES THE ENERGY BALANCE. THE POST DEVELOPMENT 10YR, 24 HR. PEAK FLOW RATE TO PDA B IS LESS THAN I PRE -DEVELOPMENT. I SWM QUALITY TO SATISFY WATER QUALITY REQUIREMENTS., 5.48 ACRES OF THE PROPERTY HAS BEEN PLACED WITHIN A FOREST AND OPEN SPACE/ SWM EASEMENT. 9VAC25-870-65 REQUIRES I THAT THE TOTAL PHOSPHOROUS (TP) NUTRIENT REDUCTION REQUIRED BY THE SITE I DEVELOPMENT BE TREATED IN ACCORDANCE WITH THE VRRM NEW DEVELOPMENT SPREADSHEET REDUCTION REQUIREMENTS. PER THE VRRM NEW DEVELOPMENT I SPREADSHEET, THE NEW TOTAL TP REDUCTION REQUIRED FOR THE SITE IS 3.51 LBS./YR., I THE ORIGINAL DESIGN REQUIRED 2.79 LBS./YR., TO ADDRESS THIS, AND ADDITIONAL 0.72 LBS./YR., NUTRIENT CREDITS WILL BE PURCHASED FROM THE SAME NUTRIENT BANK. I THIS ADDITIONAL AMOUNT WAS CAUSED BY THE ADDITION OF 0.27 AC TURF AND 0.41 AC I IMPERVIOUS TO THE PROJECT AREA. L-------------------------J EROSION & SEDIMENT CONTROL NOTES: 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:OOAM TO 9:OOPM. 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 0 SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO 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 0 BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95/o KENTUCKY 31 OR TALL FESCUE AND 0 0-5/o 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) 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. STABILIZATION 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 14 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 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 county 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 ouffall 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. 8. 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 ALIVE 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. SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM a "? .S Nv> No.45 3 O rSIONAL VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 09.14.2022 REVISION: 1. VSMP Amendment Comments 11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. E&SC NARRATIVE 18.020 C2 _�'`\ `ram♦� r ' � \\ ��ij �� \ �`` \�\ �r.F, ,: rl , r✓c , v'4�'">c' t �> AS t ` \ T �,, e`, • PRESERVED t; y t R/F WIL0 HURT �. SLOPES v ` t� D.B. 4nPc. sso TM 5-59 (� ; ':`� 1 , ZONE: RI RESIDENTIAL \ USE: SINGLE FAMILY RESIDENTIAL DAM BREAK AREA DEDICAYfD 10 ALBFMARLE t COUNTY PER1 660,_ G.774 INUNDATION ZONE 1 \.. 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PLACE DINLET PROTECTION ON ALL STORM INLETS. C\.P`'SRFFE / CLAs oo /' 9 2,5 �! = — — — 1� J I F �F FFE 16.5 _ — s 60�0'\L\ FF� l/ — ----- _ _ I �5 �/ — _I 3, BRING FIELD TO GRADE. 4, IF T00 MUCH WATER COLLECTS ON EASTERN HALF OF ,A _ _ GAP e j / �, so" AM --- — \ \ �NITARY S4WEfi E — R I E5\ / T �' PUMP TAT_ qe 51611 FIELD, PUMP IT TO SEDIMENT TRAP 1. —_— E \�' / ' �06 —r-- —_ \ / 4g3,p'/ - �' — — —\ \\� \+ I\ I )6' AFC \ \\ \\\ " ,\ 5, STABILIZE FIELD AREA WITH PERMANENT SEEDING. \F'°�I DB * /� \ �=02 s-- — OODE_N POTiEG\TIONI\(TYP) 6, BEGIN WATER & SANITARY INSTALLATION. — _ — SOIL EROSION & SEDIMENT CONTROL SYMBOLS ----- �.—' MOVemm --� ` \\ \\ SpR\ \ �\ —p NE — _—\ \ \ N/ (q2 ���(—\ � _\_—� /�/ / / / oPM _ e �__\�\ > \ \ \ ,+ ' k/% op / , m \ / / p \ / Tj T �-fl- SYMBOL N0. TITLE KEY —' // / / L SHE \ \ \ /\ S _ \ �j/'/ / 12/ tOp OF — _ _ -- / / 1 / / l / / �i / �S �9/ L C2 IE GRADE TO / / — \ 9%mom /i ' / / gtJ. / — // /' / / /' / / — �f \ l / /' / / /S� 9.p ' R— �' ' / ' /_—/ 3.02 CONSTRUCTION ENTRANCE CE — //' LIM�T�OF DI�TUI2BAN�� \ BOTT YJ P99 L — / /' / / ' \ \ �— /'_ \kkREA\\ `�\ / _--__----- J --/ \\ -- —_ — <4 i , \ IH-iEC')A'—_ , \ w° wo ima —'' '/' / �� I I / / ///' /'/� / / —�/' /_/' , / I 9L ,{ / —� — \ ' / / 1 \ x —x —x _x _ 3.05 SILT FENCE SF _� / / \55 ACI2S \ ` i / / I / / / / / / ELEV 48].0' I _ ' — P /' r—\ \\/y /— / /// \,� / / / .w / / �� / / 3.07 INLET PROTECTION IP ® 3.09 TEMPORARY DIVERSION DIKE DOD O _ TREE _, /— �► / // _ / / / / F // // �/ // —�/ J r —\ / �/ 4p � / / / / / / 92 PTO � 3.11 RIGHT OF WAY DIVERSION _ ___ // //— ,/ , OF THEyAM �c _ � / / / / E�i I \ I ` � DRAWN TO SCALE 3.13 TEMPORARY SEDIMENT TRAP ST 3.18 OUTLET PROTECTION OP -- /— / — / / / / / / / / // / // / / I TS 3.31 TEMPORARY SEEDING TS // /' \ P \ \ �• \ / \ ---_ _ -- / /' —/ / --, / / / / / / / / ' / / ' / / / I ( I 3.32 PERMANENT SEEDING S _ _// // / ( •^..\ - \ __ I / // / 7 \ ___—_ �ro mu�\ 3.35 MULCH \ _— ' /' �/ 3.39 DUST CONTROL LIMTS OF BF TREE PROTECTION NCE If 8 - - �ANITAR 1� SEWSR, �y '\ \\ \\ I 1 ,____--___ ---� / 1\ \\ \\ \\ \\ SE�N T -------- _./--/ j / ,/ \\ , _ _ ------------ / ' \\ `, / I ( \ `—__ \ > \ w \ram -- \------- --'' �'� /'' \ ° \ \ram \\ \\ \ \\\\ / 1 1 / —_---__ \\ \\ \\ \\ \\ ,\ ♦ J �\\ ` — -- — — — — _—'' // //—/ \ � _ 1 I / l \ _------- -,CSHIMP '*0,-------------- NGINOJCT^IMEy LANDPLANNINGPROJECT MANAGEMENT /1 L_ \\ \\\ \\ I \\ 912 E. HIGH ST. 434.227.5140 -------------------' //�— I �\ �♦ \ J \ � �,c� \ — — Ile / H �SSIONAL BAG % l \ \\ I le/ ' / 1 ♦ i i !'. // --------------- // ,—' /' / '' '' / '' '' '' '/ / / VSMP PLAN AMENDMENT li �' /' /—'' REGENTS ; 11 ? — / SCHOOL -------- ALBEMARLE COUNTY, VIRGINIA SUBMISSION: \ / — REVISION: 1. VSMP Amendment Comments 11-03-2022 vv,, A v zvv vv �� `, II � 1 � vI 1 2. VSMP Amendment Comments 02-14-2023 � v♦ . , v � vvv vvvv � � I � ,� ,� \\- - FILE NO. 18.020 E&SC PHASE 2 30 0 30 60 90 Graphic Scale: 1 "=30' C8 . 4415, PG. 7 i CECIL JOHNSON ; UNIVERSITY OF VIRGINIA FOUNDATION SEQUENCE OF CONSTRUCTION - PHASE 3 TM 75-61 A I D.B. 936, PG. 722 I 1. FINISH CONSTRUCTION OF BUILDINGS. R1 RESIDENTIAL TM 76 14 D.B. 4� 7O, PG. 689 2 OF INSTALL IPE AO PRIOR TTOVPPENCSTALLANEL ON. OUTLET FAMILY RESIDENTIAL I ZO•N\E: R1 RESIDENTIAL I TIM 76-1 3B 3. STABILIZE PARKING AREA WITH BASE STONE. U S : & N ALL FAMILY RESIDENTIAL I 4. ONCE PARKING AREA IS STABILIZED, INSTALL MANHOLE _ \ ZONE : R � R E S D E N TI A L Al AND PIPES Al -AO, Al-A1 x, AND ALL ROOF AND YARD DRAINS. \� ` �� \ `� \ \ \ ` \ I USE: SINGLE FAM �Y RESIDENTIAL 5. ONCE FIELD IS STABILIZED, INSTALL PIPES A1d-Al AND I I I \ `\\ au-axv- \2uuo-onu\\wu_oHu\ \ \ `\___ N 45`02' " E 30 0 30 60 90 B4-B0. I - \ \-��-1 1 moo„ _ox T� y \ - \ 44 \ \ 1 \ 6. KEEP INLET PROTECTION IN PLACE UNTIL ENTIRE SITE \ a - - --- _\\ \ \ -�- N - % I - �r ` \�---���\\ \\ \"�- \ \ \\ \ \ 1 Graphic Scale: 1"=30' IS STABILIZED. 222.52 _ _ 2 RE vQr ooRO - _ \ \ 26.31 �\ `\�`" -w �w -w\ \\ `\ 7. REMOVE SEDIMENT TRAPS, BRINGING THOSE AREAS - - - 10+0o - -� . \\ \\ \\ \ \ \\ �w w �w -w -w BACK TO ORIGINAL GRADE. APPLY PERMANENT SEEDING / `/moo----+00 : - --` = \ \\ \ w - � AND LOW MAINTENANCE GROUND COVER WHERE _ -- _-_ ___ _ -_ - SLOPES ARE 3:1 OR STEEPER. - - 8. INSTALL MITIGATION PLANTING IN DISTURBED STREAM `� LOp wo �,no jim .no T.no ono � goo �t�no Iwo �C�oo - _ � - - _ j BUFFER AREA PER PLANTING SCHEDULE. \ \ \ \ 14.5' - 61 3% 32'\\E\\\22 .5 1 s� - ---- --- -�-_ \\ SOIL EROSION 8 SEDIMENT CONTROL SYMBOLS c - � _' � �,00 f 00 \ \ \ \ \ � SYMBOL NO TITLE KEY PC N 1 Z \ \ \ \ \ \ \ \I 1 I \ 1 I / N4 Z % // --- --- _ ��oo _ 3.02 CONSTRUCTION ENTRANCE CE \ \ \ \ \ \ \ \ 1 o I I 194.8. I \ L J / / \ __ _ _\ tb \ ��� \ I \ \ B ba o \ x -x -x -x 3.05 SILT FENCE SF \ 3.07 INLET PROTECTION IP IN,\ \ \ GY WALL • SHOULDER \ \ \ iI \I\ II 1\I i ' MAX12 HEIGHT r. MAX 12:1 SLOPE \\ I\ I \\ �'` -� ! `/\\\\ \\\ ® 3.09 TEMPORARY DIVERSION DIKE ,{�D ELOCAj�D \ 1 \\ \\ \ \ \ 4 3.11 RIGHT OF WAY DIVERSION \\ \\ \\ \\ LO� MAINTENANCE GR UND COVE \ 1 I \\ 1 I I] 15' AG�r - \24 �\- \\ \\ \\ \ \ -�� - ����°°�\ 50 9� [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST \ \ I I I I ACCESS \ \ \ \ \ \ \8 \ \ \ \ \ \ ALL SLOPES 3:1 R GREATER II II \\ \ \\ \ \ 1 1 1I I \ I II \I II \ 1II 11 I I II II I I II I I I�II �='•- IIII /I I I I I I ASEMENT'_ \�\ x�-3.18 OUTLET PROTECTON 98 20 \- \ I LOWidAINTENANCE GROUNDCQVE 48 ,3.31 TEMPORARY SEEDING I "NO PARK�IFIRE ACCSLOPES 3:1 OR GREA3.32 PERMANENT SEEDING111886 0 G NASIUM A LANE" SIGNS RJELLOW AINT ON CURB 3.35 MULCHF5D .5017 OOTPS5 I 3.39 ousr CONTROL I I I I I \I \ I I \ I I I I I 1 i m A4 -- -_ 1_7 -__-_ x23 __= _�4n_\ \ \ \ h• \ \\ Fs `�\ LIMITS OF DISTURBANCE 1 I I I O I I I I I 1 a! •¢7 A 22 L���=_ - - 4i s' \ V ` \ -0--�� TREE PROTECTION FENCE TP <\ / I 1 II I� o I AREA I, I 1 � , � m J__� \yc -N. \ \ / \ I REVISE I \ \ a I AJKING FIRJ ��or 133�x198' FIELD / /( ''-fZ20.00' (110 vQ x66 / /---\ \ ` / DI r7 I "NJ\\ \ \ \� 9d.. z3&= 1\ I LANE" SIGNS OR YELLOW, = PAINT ON CURB ® 'o�NasleR. 294^\ \v\ v \ 29'4" 1 w o \ \ 42" O R7-Sa PLACARD TYP • �•\ \\\ \� \ \\ \ \ o HANDRAIL 116°J•/ °.1 ;54. �• x �, 3 1 7S' N o 290 ' WALL E I \ I „ 18 . D E m O 00 0.00 MAX 8' HELGF'�T \ w16 q '.1 mN m A 1. ❑ G- ' i s I IS al6,�17 RISF,R' 17 m".�-s�,a..: �.° °•� RP 10.00' ' - I _ 1 \ \ _ 1 �p ° ° ( RIV TE 18.00'�- 98_13 aik. r 9.00 0„4 x you I \ 179° � 9(' N 4„ - -. - N A / / TAINI AL AX`kiEk 1F17, L El MAX 3L_iFJG14f 13 \ FFE 517.16/ \ �',..a. w -w + 7 w -w -w -w -w -w ro w -w tw -w -w -w �� w -w -w -w -w -w w '\ _ - OF ACSA\EAS MEN >T J I l DNE\W FDC 4s ` x4 6' WL .2 6" GV 5• END ' GEOFeBRI BE OCATED 0 _ - • /BUILDING fG W 20+00 8\ 19+00 CORAM DEO DRIVE 18+00 O \ \ \ \ SHIMP WALL F� 8'�°'- 1 so / LOCKEf� - \ y. x4 TEE _�x�RED.- TEES ��oo�� TREELINE TD'8E11LEARED �. o w� _-'18=-OF NEW ACSA WATERLINE _ / MAX 10jHEIGHT 1-7 w 12 a / ROOM 6' NYL�PLAST. \ OT-T�EXCEED$- \ . - \ - \ \°° �.,. \ \y / �9 I 2184F "".; YARD DRAIN jn: 5% SL AT CG-12 �\ \ \ \ �` __ '//���'�`-- \\ I 7 I 60' \ TYP.) \ -PCs' CK \ w w\\ N. \ \\ \ _-�-- ENGINEERING O .a `? a\ \ AREA 1 _ _ '0 - - 7; �' - •~ 'W \ I'IMI - --� - LAND PLANNING - PROJECT MANAGEMENT '.A I 10' STA ING LOADING AR z / 1\ 42" HANDRAIL , RA o REG�E`NTS a... °z o: •��.. ...HAIJ9RA "y-'-• \ 'L L�D.;IP� �T E _ f2 PA _ Jai' \ 115.00 .� 10 a :.ri'. \ ' PLAZA -� ,a :. -r-_ .� '/ ,Y.. / yF �._ :F ,: _--yro �W � za �..72 . AIN. W/� BUILDIN H PR QPOSED .. \• \F'DES .. AN S S AS x e -- _ ' na oa `� � + TpPA �` rw � W � 912E HIGH ST 4342275140 •N- ---� \ o / RATE •CLASSROOM N \ T8^ \ \ _ s !t °= _ ` - - - -' / / / 60 .23F $UO SF TW 2 - /6�\ \ \ \ - \ _ \ \ - - _ CHARLOTTESVILLE VA, 22902 JUSTIN(�SHIMP-ENGINEERING.COM \ a T448 F F/ g .::. FFE 512.5 \ -� / / - - - �W T4 \ ¢ s., �'�. 1 \ S 4 \ :. - '. 1$ x 2,352 ^^' is \ \ AS-S-B-TY2E 1 MITIVE N�A+.T.U�R,.E� m -I, 4V \ \ - 252215F '0 // CL SR00 BUILDIN I \ \ -i \ Ew v>eDo.,.-- +iDO1 .A.LL �!p \' m m� `- 600 SF 16 YARD - \BUILDNGl� p a-_' gl__--BUILDING B/ i.. /FIFE 5�8-` \CLA9R00 / �\ \moo \ PERWL}Aft LQllN7Y._- Ino .ASSEMBLY o' / FF �} f o . \ \ m _t _ d.. E 7s Bx -� sr / DRA .�.• ADMINISTRATIVE 9 Lw R GEN �, / .� x DESI N STflY4D DS M NUAL ' 0 olnw \FFE 508 \ Tn-F o.:I•,. �LASSROOwI� /-- °� - i7 _ / w BUIL{OIN6"S2 \ \ D• - ��� \\ o ����!�;�' FEE 512.5 \ ' 9 v...,. o, �) B DING ••'I,. '-i'- FFE�518..� / 1>� x 15 �_•,_.� °°_ \ \ ti _ TA �0°SL�PE- ,7 . O 01 D4 FFE oTa F-- /., • i. 601J- �\ - \ c, ��S Gar •. \ �` ' 61°I YARD DRAIN 1. m. •:. i/a CLPE SROJC�M .�\ _ 7 - - ' ' 0 \\,`,....... �n� \ CLABSSg OM N \� __ - _ a f M // ' \ `C�,60 T2 10 \ - t - EVISED-_ T �- ��FE 512. t m °. >o - - __---�� \ OOQ�IN, _ - - / _ 1 RI E - - - - n',o• 7'0 G FFO / SF \ SF \ / \ \ \ N J' \ ,��,,,,11''S'' AYE / / vl\��FLSI�RS ' zs'a^ / s a1 �, Uk131ATG-D6� OOMA$5 \ �G`"�( I - / FFE5165 _�` - - �E"50 a \� e� - - rt�� A� L - - - - - - -5 �+rss - - IVo. 45 \ 655Fz�6 \ `�'. W o / \ \ \� \\ % I /\ \ --\� / r 00 _ _ F 42" HAND ILS (T P -� �. MH \ 13Y'._\ an s �i'-- '� ."a'YI%'2,�j 4' wa �� � \ I \- 6" PD y�\\ \\ \ / I 'IBtliL�l�{G - �L'AS�ROOM - F/ 502.t4 \_`---\ G�FFF. Og I /ioo� i-$1 \„ /ELEVATED ON PIER 0 �O \G�/ I. O�\ \ \ - V FFE 516 -- G FF / �o �P° 6' P / h, \ \ \''- 0V\V 5 &• 5 t, 8 \ \ � '° BUILDING ROO < \ -� ^ \ \ I L. _FOUNDATI NS M-� \ tB�LNCE UR FF= 6Pa' 0 // _ - - Dtl scHpoL\ soo sF c� / 9. / D011JNSPOUTS �np \ a \ `' ' _�4 \ -\� \ \ \ o i'\ BUIL4ING \�- CLASSR00 \ A'R�H. PLA x `4' \ ' \ \/ \ \ -J \-.-I� \-' / FFE 516.5 - _ \ -' ITARY S T � ---, 'R CLPI� r5\6' - - VSMP PLAN AMENDMENT \ ---x -- �� \ �? / 7- 1 I �' / / a / /� \ \ t \ \ / \ \ \ � \ I -----\ ,- \ 1 I REGENTS\-5 NEW \ \ ,025 �_ys�_\_ / / \,E ��_ \� \ / / s/ SCHOOL TOI 0 502.5'�I _ F- - - - - - - - - - - - - - - / LIMyT�OFDI TURBANC� \\ \\ '-- \ 4, Y 299 L - 8" S - 0 �' / / - - / \\ I ' '/ / /// / / / /h o/` ---------- ---- \ - \ _ / ' / / - I I / / '// ' /- / / '�/ / / X� / ALBEMARLE COUNTY, VIRGINIA ,AREA\\ \ � \ �i---- �wo�wo ---- i/ ,/ l / / �/ /' / i' �/ /-/ - - - ` �55 ACi2F�S \ - / / ' / - - - _ '�� SUBMISSION: ��-_�J \ \\\ \\ \\\ \- '// `S A o \\ \ \ yo-' \ --_-'' - `°o_iro� / j / / / �/' / /�9'-/ l I / / // /// / // // / /// / //-_ / // /i-/- /'/ /-i / / 09.14.2022 - �__-- - / / / REVISION: OT CTI OW / , 1. VSMP Amendment Comments 11-03 2022 iNCE' 2. VSMP Amendment Comments02-14-2023 7 / I _ FILE N0. / / \ N. \ / I / / / ' / A V v •� r \\ // a �/ /'---- - _ /// / / / / / /\��� // / / / l I l \ \ � \ r \ iv - £ �' �'\� ---- ----- ----i'' / /\_-- _ _I / / / �' / /vV / �° I�� I II \ I 1i \ 18 020 ---------- 5PRvV� /1 ---------- E&SC PHASE 3 B\ANITAR1� SE1 E / y, a1/ `� FFE 516.5 \� - P55pa � Ilk 5 °2 _ SEQUENCE OF CONSTRUCTION -PHASE 3 w rt = _ _ = ---- - - - - - I ASS L,A, - --- 1. FINISH CONSTRUCTION OF BUILDINGS. FE w� 5 ` `� \ _ �� • F ' - / °p^ _ - _ _ - 2. INSTALL RIP RAP CONVEYANCE CHANNEL AT OUTLET $i$N^\ \ M"5 \ I \`\_ 6" PD �\ \\\ / \ - I e,y,v,J Q SF�\ 7.8^ 30% El _ `� _ _ _ _ OF PIPE AO PRIOR TO PIPE INSTALLATION. \ y rL"ASSR M FFE cE cgNT - - 3. STABILIZE PARKING AREA WITH BASE STONE. G s°�� /'`� ��, \'\ \� \\� °r FFE 516 �`LQ\NG OFF ,/ ` \ 3 / / _ 4. ONCE PARKING AREA IS STABILIZED, INSTALL MANHOLE \V_^\ UR� L_ _ - pBUILDING SROOMS\6. / / o M" / --- _ Al AND PIPES Al -AO, Al-A1x, AND ALL ROOF AND 6.0 \'SCH OL\ °`- 600 SF G\-PS FFE •/ 6� rit00 /' CLASSROO // 9 xa5 PIw'' / /' N \ - - YARD DRAINS. �\ uit iNc > 30 0 30 60 90 FIFE 516.5 _ .- s 60 0"�\\.O\ FF�'` , ---- \��-tO GAP �l pu 60" AMEr --- - 5. ONCE FIELD IS STABILIZED, INSTALL PIPES A1d Al AND /,_ TATI' _ _ B4-B0. �s 8� \\ \I / // / '�__ I --_ \ / EI / // / � _-,._ - - �>l��?��>l�F?�t. Graphic Scale: 1"=30' / -/ I I / /� - - - 1 I 6. KEEP INLET PROTECTION IN PLACE UNTIL ENTIRE SITE THE _��\ /\\\ \I IS STABILIZED. �P 0TE6TION\ \ \ \\ `\F \ ' / \ \ k/----- \J ! y' / �ti/ R �5 g ---- I \ Cam\ \\ \\ \ \\ �___ , 6" PV�r_-��- N_ , , ,/ 1 / ho \ 11 ; 1 7. REMOVE SEDIMENT TRAPS, BRINGING THOSE AREAS x- \ \ a- _ \ Y--- /�----- $ BACK TO ORIGINAL GRADE. APPLY PERMANENT SEEDING MOV�4 --` \ y `\ \ o \ \ - _ ANEW _ _ \ A25 ,� ,_y,��__ ,/ , / F % e '-___-- `,\ \ , \ \ / AND LOW MAINTENANCE GROUND COVER WHERE \� SLOPES ARE 3:1 OR STEEPER. IE GRADE TO 3 / / / , g '-- - / / / 8. INSTALL MITIGATION PLANTING IN DISTURBED STREAM \--------''------ LIMJT�OFDI�TUIRBAN(� \ _ /�- \ ° J YJ 219 L - 8" S R- 0- �/ / �/' /' - - w - `\ / / _-__ '' / AREP,SOIL EROSION 8. SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY '-- ya ---- /I'��_ 3.02 CONSTRUCTION ENTRANCE CE \ _ __ i %, \ \ \\ \\ \\\ //\\ \Y \ �- - - '' /' /// / / / /'// // x _x -x -x 3.05 SILT FENCE SF i _ _ - i i �'E� // / / / / / / / / / 3.07 INLET PROTECTION IP I>}�OT€C ION''// / /'/' / // / // 1 ® 3.09 TEMPORARY DIVERSION DIKE DD j i 3.11 RIGHT OF WAY DIVERSION W 7 3.13 TEMPORARY SEDIMENT TRAP ST iY�'• \, ` -- / ---- ,mom mo /'� _ i / /' / / / / / / ��_� DRAWN TO SCALE O J ° 8 _ _ / / / / / / / / / / / / / / \ \ 3.18 OUTLET PROTECTION OP - 3.31 TEMPORARY SEEDING TS 3.32 PERMANENT SEEDING �S - - - - // / / / / / I I / / / / \�_ 3.35 MULCH '( 3.39 DUST CONTROL \\ LIMITS OF DISTURBANCE ;J \ \\� R'F\\ // -0--�0- TREE PROTECTION FENCE -----_ V y----------- - !!PP\\ 1 I - __- N I T\AR S 10 All y 0 - - - - INI r- a �\ \\---------------' I',,_''' /`\\ \\ T \` `�\�\�`�\\\ �� a s \ \`-------- --- l - I \ \ 1 \\ \ \\ \`\J%' / // / ,' I I \\'' /I 11 11 f' SHIMP \� - '�\ •.- / 8 --- - ------- / \\ I ENGINEERING \\ \ /'✓ \- �CX�1` J \ % \\ `S 8 - - LAND PLANNING - PROJECT MANAGEMENT -.------------ \ \\ 8--------------- \ \ \\ \ I I //-- \\ \ \\ I I `---- -_ I I\ // /�__-'' / 912 E. HIGH ST. 434.227.5140 \ \ \ \ \ - - - - - - - - - - - - - - - / J / I I /' \ `\ I \\ / / - - /� CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM --- I/ \ I I / \ � � r 2,136 SF NEAM BU i///'� // - - - \ DISTURBANCE. IT E WIT / / / / _ _ 1A: 11 LARG �,OPY ES, 12 UNDERST AND SHRUBS T S" INS T ED T S EAM BUFFENo.45 3 \ - \EA ��- I _ � `' I A V I SSIONAL B� / / _ VSMP PLAN AMENDMENT REGENTS \ I 1 \ \ 1 1 \ SCHOOL \ v \ 1 .v� -------- \ \ \ \ \ \ \ \ \ I / _ / ALBEMARLE COUNTY, VIRGINIA y: yi SUBMISSION: 09.14.2022 `\ // ___----\ �--- � \ � REVISION: vA `v v `v v ` \�� / / / A \\ \\` \ ` \ \\ \ \ I / \\ 1. VSMP Amendment Comments 11-03-2022 \ \ \ \ i \ i 2. VSMP Amendment Comments 02-14-2023 / / \ 1 MITIGATION PLAN LANDSCAPE SCHEDULE Plant Symbol Planting Type Botanical Name Common Name Caliper/Height Quantity Canopy Total Canopy Large Shade Tree Fagus grandifolia American Beech 121"1 11 227 2497 Ornamental Tree Cercis canadensis Eastern Redbud 21,111, 12 124 1488 Broadleaved Evergreen Shrub Ilex glabra Inkberry Holly 15"-18" 13 23 299 Total Canopy 4284 FILE N0. / - 18.020 / / E&SC PHASE 3 I / ---- MITIGATION PLAN -------------- LD-229 Storm Drain Design Comnutations REGENTS SCHOOL OF CHARLOTTESVILLE LD-229 STORM DRAIN DESIGN COMPUTATIONS From To Catch. Runoff Inc Accum ToC Total Total Up Do Pipe Inc Pipe Pipe Velocity Flow time Point Pant Area Coef AC AC Intensity Flow (cfs) invert Invert Length Slope Diameter Capacity Inc (ac) Onin) (m/hr) 19 F1 (ft) % (in) (cfs) (ft/s) (uun) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 B4 B3 0.27 0.30 0.08 0.08 5.00 6.81 0.55 493.75 489.35 88.01 5.00% 15 15.65 5.98 0.04 B3 B2 0.27 0.30 0.08 0.16 5.04 6.80 1.11 489.15 484.75 88.01 5.0000/0 15 15.65 7.37 0.03 B2 Bl 0.27 0.30 0.08 0.24 5.03 6.80 1.66 484.55 477.77 44.65 15.18% 15 27.27 12.28 0.02 Bl Bo 0.24 5.02 6.80 1.66 468.37 468.00 18.56 1.990/0 15 9.87 5.98 0.04 A4 A3 0.69 0.34 0.23 0.23 5.00 6.81 1.59 517.95 513.53 67.70 6.53% 15 13.15 9.00 0.03 A3a A3 0.36 0.90 0.32 0.32 5.00 6.81 2.19 513.42 513.06 36.10 1.000/0 15 7.00 5.04 0.05 A3 A2 0.50 0.77 0.39 0.94 5.05 6.80 6.40 512.61 510.35 53.40 4.23% 15 14.39 11.38 0.02 Ala A2 0.45 0.53 0.24 0.24 5.00 6.81 1.63 515.46 511.97 204.85 1.70% 15 9.12 5.62 0.04 A2 Al 0.50 0.83 0.42 1.60 5.04 6.80 10.86 510.15 507.10 104.40 2.92% 15 11.96 11.04 0.02 AOd AOc 0.48 0.30 0.14 0.14 5.00 6.81 0.98 493.75 492.87 88.01 1.000/0 15 7.00 4.02 0.06 Aoc AOb 0.48 0.30 0.14 0.29 5.06 6.79 1.95 492.67 491.79 88.01 1.000/0 15 7.00 4.88 0.05 Aft ADa 1 0.48 0.30 0.14 0.43 5.05 6.80 2.92 491.59 1 490.68 91.35 1.000/u 15 7.00 5.45 0.05 Aft AO 0.14 0.90 0.13 0.56 5.05 6.80 3.80 490.48 487.78 159.3 1.69% 15 9.10 7.08 0.04 C2 Cl 0.31 0.90 0.28 0.28 5.00 6.81 1.90 499.00 498.50 13.62 3.67% 15 13.41 7.73 0.03 `Structure AOa 8 C2 has DA from Roof Drain of the Building 535 530 525 520 515 510 505 500 4 53 53 52 52 51 51 50 LD-229 STORM DRAIN DESIGN COMPUTATION Not Scale A2 A3 535 530 525 520 515 510 505 gg5g 500 10+00 10+50 11 +00 11 +50 12+00 12+540 5 A2 1 �-i�lllllll�!��iOjJNfO� 1 iiii■.rea��iiiiii�iiiiiiiiiiiiiiEn��iilliiiiiiiiiii� 1 Q.91Wi•���\��wlL'_�7 -- �1�••'•'ii� � 'ir�� Imo•• WAS n�IRfM�-�C7� 1 i� s STORM PROFILE Al -A4 _ C 12 VMT: 1 "=10' HORZ: 1 "=30' A2o 0 ao x. A L IQ U - W O JI o o a GRADEO � Zen 7 15 I HDPE @ 1.70% - ' .85LF In >z Z Il6bP1 I it50 INFAMO1 535 530 525 520 515 55510 I2+585 535 530 525 520 515 510 Sal 51 5- 510 505 500 495 490 485 480 47 3 3 REGENTS SCHOOL OF CHARLOTTESVILLE LD-204 Stormmter Inlet Computations Inlets on Grade Only Sag Inlets Only y 9 .9 c n. b' yv u¢ V v U to a u 9 a U a >r '° a a z v a Q w o a c7 ° w F m a O' O' 3 U q 72 � 1 2 3 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (ft) (ac) (u/hr) (CI) (cfs) (cfs) ('/') (/') (/') (ft) (ft) (cfs) (cfs) (ft) (ft) 00 B4 DI-7 3.0' x 3.5' 0.27 0.30 0.08 4.00 0.33 0.000 0.33 0.015 0.010 0.010 7.16 0.07 99.10% 0.32 0.003 6.5 0.53 0.000 0.53 8.55 0.09 90.8% 0.48 0.049 B3 DI-7 3.0' x 3.5' 0.27 0.30 1 0.08 4.00 0.33 0.003 1 0.33 0.015 0.010 0.010 7.16 0.07 99.10% 0.33 0.003 6.5 r 0.53 0.049 0.58 8.85 0.09 89.2% 0.52 0.062 B2 DI-7 3.0' x 3.5' 0.27 0.30 0.08 4.00 0.33 0.003 0.33 0.015 0.010 0.010 7.16 0.07 99.10% 0.33 0.003 6.5 0.53 0.062 0.59 8.90 0.09 89.2% 0.53 0.064 AOd DI-7 3.0' x 3.5' 0.48 0.30 0.14 4.00 0.57 0.000 0.57 0.015 0.010 0.010 8.79 0.09 89.5% 0.51 0.060 6.5 0.93 0.000 0.93 10.56 0.11 89.4% 0.83 0.099 AOC DI-7 3.0' x 3.5' 0.48 0.30 0.14 4.00 0.57 0.060 0.63 0.015 0.010 0.010 9.13 0.09 89.5% 0.57 0.067 6.5 0.93 0.099 1.03 10.97 0.11 87.7% 0.90 0.127 A01b DI-7 3.0' x 3.5' 0.48 0.30 0.14 4.00 0.57 0.067 0.64 0.015 0.010 0.010 9.18 0.09 87.7% 0.56 0.079 6.5 0.93 0.127 1.06 11.09 0.11 87.4% 0.93 0.133 A4 DI-7 3.0' x 3.5' 0.69 0.34 0.23 4.00 0.93 0.000 0.93 0.015 0.010 0.330 2.05 0.10 6.5 1.52 0.000 1.52 2.17 0.14 A3a DI-3B 6' 6' 0.36 0.90 0.32 4.00 1.29 0.000 1.29 0.015 0.0276 0.017 7.08 0.12 100.0% 1.29 0.000 6.5 2.09 0.000 2.09 8.49 0.14 100.0% 2.09 0.000 A3 DI-3B 6' 6' 0.50 0.77 0.39 4.00 1.55 0.000 1.55 0.015 0.015 0.028 8.31 0.5 16.62 0.23 6.5 2.52 0.000 2.52 11.49 0.5 22.99 0.32 A2a DI-3B 6 6' 0.45 0.53 0.24 4.00 0.96 0.000 0.96 0.015 0.013 0.031 5.02 0.16 100.0% 0.96 0.000 6.5 1.56 0.000 1.56 6.02 0.19 100.0% 1.56 0.000 A2 DI-3C 6' 0.50 0.83 0.42 4.00 1.66 0.000 1.66 0.015 0.010 0.033 7.38 0.5 14.77 0.24 6.5 2.70 0.000 1 2.70 1 10.36 0.5 20.72 0.34 LD-204 STORMWATER INLET DESIGN COMPUTATION Not Scale o / = J am o+ - ____ H rn O r U< wrir r r O J / as wow z H V) i �O 0 o� 159.3 LF - 15" HDPE ® 1.69% ® 1.00% mm 00 Co 0o rn Z - 10+00 10+50 510 505 500 495 54090 11 +00 5 STORM PROFILE A2-A2a 6 STORM PROFILE A3-A3a 7 STORM PROFILE C1-C2 C 12 HORZ: 1 "=30' C 12 VERT: 1 "=10' HORZ: 1 "=30' C 12 VERT: 1 "=10' HORZ: 1 "=30' VERT: 1 "=10' 11+50 12+00 12+50 4 STORM PROFILE Ao-Aod C 12 VERT: 1 "=10' HORZ: 1 "=30' 13+00 13+50 10+00 10+50 11+00 11+50 12+00 s STORM PROFILE B0-B4 _ C 12 VERT: 1 "=10' HORZ: 1 "=30' 14+00 12+50 515 510 505 500 495 490 485 4780 14+540 5 sos WIC :ri.". :Y1S :rN 470 465 460 13+04055 SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM 'tWIVo. 451S3 4� O��SSIONAL B�G� VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 09.14.2022 REVISION: 1. VSMP Amendment Comments 11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. STORM PROFILES C12 S1 5 � 540 535 a 535 530 _ _ 530 ---- - -- -- - 525 _ _ 525 SCH. 40 - - - - - -- 520 - \ _ Py0 62.7 LF - 3' SOH. e0 PVC -- —r.—_--_--- _ 11fi.9 LF - 3' SCH. 40 �\ _ _ft PVC ®2.6 515 515 \ \ 510 J 510 LF 3' 10,z� _ 51.2 rc r� m 505 a 6 505 i Ni 500 i G 495 b 490 i 490 48 '� 485 480 IF480 A5 > - 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 16+00 16+50 17+00 17+50 18+00 18+50 19+00 19+50 20+00 20+50 21+00 21+50 22+00 22+50 23+00 23+50 24+00 24+50 25+635 10+00 10+50 1 SANITARY PROFILE PUMP STATION TO S1 C13 VERT: 1"=10' HORZ: 1"=50' 51 S2 S3 S4 51 a 510 N 505 MIX505 500 Ma± H- �aa _ WOE 500 HIMP z 495 N NII a - ~ J 495 ENGINEERING 174.53 LF - 8 . o = � Q rn LAND PLANNING - PROJECT MANAGEMENT 49 D N 490 a o, m > t0— / N o Z_ 0 912 E. HIGH ST. 434.227.5140 485 120.84 L - `O z z 485 CHARLOTTESVILLEVA,22902 JUSTIN(t�SHIMP-ENGINEERING.COM z� o> 489� - 480 � z a- � z a - 475 475 TH ���✓ 470 470 . S tvi a fifi55 410+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 gg 15+5405 No. 45 3 ��SSIONAL ECG 2 SANITARY PROFILE S1-S4 C13 VERT: 1"=101 HORZ: 1 "=30' VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 09.14.2022 REVISION: 1. VSMP Amendment Comments 11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. 18.020 SANITARY PROFILES C13 STONE - 7D' MIN. CONSTRUCTION ACCESS 3 SM-2A ASPHALT TOP COURSE EXISTING 2% 2% PAVEMENT f- �5` MAN. 21A AGGREGAIE BASE PROFILE 70' MIN. STONE CONSTRUCTION ASPHALT PAVED ACCESS F-O WASHRACK EXISTING i- 2X PAVEMENT L^- -�IIrA, 0 12' MIN.* �sr *MUST EXTEND FULL 'h'I3 I -POSITIVE �O DRAINAGE TO SEDIMENT OF INGRESS AND EGRESS 4 TRAPPING DEVICE OPERATION PLAN 12' MIN. IPOSITIVE DRAINAGE ITO SEDIMENT 2% TRAPPING DEVICE FILTER CLOTHS - SECTION A -A A lnniumun water tap of 1 inch must be wstalled cviftn a uww call 1 inch bancocic shutoff calve stipp4ing a wash hose with a diameter of 1.5 inches for adequate constant pressure. Nash water nnwt be carried away fronn the entrance to an approved settloug area to remove seclnnent. AD sediment shall be prevented from euteiI stone chains, (etches or watercourses. PAVED WASH RACK F PAVED CONSTRUCTION ENTRANCE (PCE Not to Scale PIPE OUTLET COND177ONS A A 5 OUTLET PROTECTION (OP C14 Not To Scale Specifications Pipe La (ft) d (in) W (ft) BO 9 6.0 10.25 Class Al Riprap for all outlets SILT FENCE DROP INLET PROTECTION 2 X 4' WOOD FRAME 1.5 DROP INLET WITH GRATE FRAME IIIIIII II III® EXCESS AT CORNERS PERSPECTIVE VIEWS ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATION �q II V MIN. IIIII � DETAIL A THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. iT�INLET PROTECTION (IP) VE C( C� Not To Scale Compacted Soil 18" min. < Flow 4.5' min. 6 DIVERSION DIKE DD C 14 Not To Scale TEMPORARY RIGHT-OF-WAY DIVERSIONS TYPICAL GRAVEL STRUCTURE "7:)RIGHT OF WAY DIVERSION (RWD C14 Not To Scale REGENTS SCHOOL OF CHARLOTTESVILLE Modified LD-268 Roadside and Median Ditch Design Form Desing Storm Side Slope Min. Max n= 0.05 Ditch C A CA J Tot I I -Lin 12 110 1.81 Q -tin 02 C10 :1 L :1 R Slope Slope Allowable Velocity 2-yr 10-yr Matting Type Freeboard Channel Designed Depth SF AC INCR ACC Ft/Ft Ft/Ft -Velocity *Depth Cl 0.76 33397.00 0.77 0.59 0.59 5.0 1.0 5.17 0.59 3.no 3.99 3 3 a05 0.14 7.0 1 4.20 0.66 EC-3 TYPE I 0.34 1.00 Al 1 0.62 1 133612.00 3.07 1.90 1.90 1 5.0 1 1.0 1 5.17 1 6.81 1 1.90 1 9.81 1 12.92 3 1 3 0.13 0.22 7.0 1 6.68 0.86 1 EC-3 TYPEI 1 0.14 1.00 AO 1 0.41 1 89237.00 2.05 0.84 3.32 1 5.0 1 1.0 1 5.17 1 6.81 1 3.32 1 17.17 1 22.62 3 1 3 0.07 0.15 7.0 1 6.13 0.72 1 EC-3 TYPE I 0.28 1.00 BO 1 0.30 1 19832.00 0.46 0.14 0.14 1 5.0 1 1.0 1 5.17 1 6.81 1 0.14 0.71 1 0.93 2 1 2 0.10 0.13 4.0 1 3.06 0.40 1 EC-2 TYPE 1 0.60 1.00 `Velocity calculations performed using maximum slope for this application *'Depth calculations performed using minimum slope for this application 10 ) LD-268 DITCH DESIGN COMPUTATION C14 Not Scale PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 Ibs/acre; Red Top Grass - 2 Ibs/acre; Annual Rye - 20 Ibs/acre. May 1 through August 15: Kentucky 31 Fescue - 128 Ibs/acre; Red Top Grass - 2 Ibs/acre; Foxtail Millet - 20 Ibs/acre. August 16 through October 31: Kentucky 31 Fescue - 128 Ibs/acre; Red Top Grass - 2 Ibs/acre; Annual Rye - 20 Ibs/acre. November 1 through February 15: Kentucky 31 Fescue - 128 Ibs/acre; Red Top Grass - 2 Ibs/acre; Winter Rye - 20 Ibs/acre. 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 Ibs. 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 Ibs. per acre of 10-20-10 (10 Ibs. 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 Ibs/acre each, along with EC-2 Matting: Virginia Wildrye (Elymus virginicus), Little Bluestem Grass (Schizachyrium scoporium), Purpletop (Tridens flavus), Broomsedge (Andropogon virginicus), and Indian Grass (Sorghastrum nutans). 3 )PERMANENT SEEDING (PS C14 Not To Scale GRAVEL CURB INLET SEDIMENT FIL TER -------- GRAVEL FILTER* RUNOFF WATER 12" WIRE MESH FILTERED WATER o d d O - 7 p o O d IT A III IIII A SEDIMENT J III CONCRETE GUTTER 12' 1 \-1- CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. 8 INLET PROTECTION IP C14 Not To Scale Channel Top Width (- Matting Channel .0 Boftom Width �( I- B 11 SCC SECTION DETAIL C 14 Not To Scale STORMWATER CONVEYANCE CHANNEL SECTION CHANNEL CHANNEL CHANNEL CHANNEL 10-Yr 10-Yr SCOJ NUMBER UNNG DESIGN DEPTH SIDE E SLOPE BOTTOM WI TOPDTH 2-YrVencity Depth Depth (A) WIDTH (ft) (B) (ft) (C) SCC C1 EC-3 1-0 31 0 6 4-20 0-66 EC-3 SCC Al EC-3 1.0 3:1 0 6 6.68 0.86 EC-3 SCC AO EC-3 1-0 3.1 4 10 6-13 072 EC-3 CLASS Al SCC BO 1.0 2 1 0 4 3.06 0-40 EC-2 Rip -Rap 1 1 1 ORIGINAL GROUND ELEV. Area 2 DRY STORAGE 67 CU. YDJACRE EL=8 Area 1 \ WET STORAGE 67 CU. YD./ACRE Sediment Trap Design Data Weir DA Wet D1 Wet Vol. Dry Area 1 D2 Dry Vol. Area 2 No. A B C H (ft.) Z (ft.) W (ft.) L(ft.) (Acs.) (ft.) (Sq.ft) (ft.) (sq. ft.) (ReQ) (PCoV) (Req.) (PCoV) 1 464 462 459 5 5.0 6.0 18.0 3.00 201.0 3.0 224.9 201.0 1736.0 2.0 203.8 3192 2 492 490 487 3 5.0 6.0 17.7 2.95 197.7 3.0 218.0 197.7 1680.0 2.0 198 3108 3 488 486 483 5 5.0 6.0 10.5 1.75 117.3 3.0 142.0 117.3 1250.0 2.0 142 2516 (EXCAVATED) 1/ CLOTH ORIGINAL GROUND EL=C \FILTER ELEV. \ *SEE PLATE 3.13-1 COARSE AGGREGATE** CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LENGTH (IN FEET) _ 6 X DRAINAGE (IN ACJ AREA �- DIVERSION DIKE / COARSE AGGREGATE / EXCAVATED FILTER CLOTH AREA �� **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) 4 TEMPORARY C14)Not To Scale IT, F1 ► ::% .41INIMUV TOP WIDTH (W) REQUIRED FOR SEDIMENT TRAP E.WBANKMENTS ACCORDING TO HEIGHT OF E.'1l13At\rK,tlENT' (FEET) 1 I r I ------------- is ws so 3o •A 20 7D 20 Ss 3% is 10 .ss 40 s-0 a• 4% o-e.'.to w macula w.o t Soutotr. Va DSWC Plate 1 It 1 TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES SEEDING RATE NORTH' m w t3 SOIITH6 PLANT ]n 5/1 HI15 v15 5n 9/1CHARACTERISTICS SPECIES Acre IOoO nit w a m m m ardo 8I15 11/1 a130 911 11115 OATS 3 N. (up m I0016e., 2lbs. % - - X - - Um spring veria[iw (e.8.. Nobk). (M.. setival nm less dun 50 IN.) RYE` R be. (up to 110 IN., 2.5Ibe. X - X X - X U. for hm fell sidings, wiolm (Scale ) oil lae Wan SO IN.) coves. T.I. cold and low mouwre. GERMAN MILLET SO IN.approa. 116. - X - - X - Wew-•eeoa amuel. Dies at firvl el (rose. MaY be added m sower ANNUAL RYEGRASa° 6016e. 11A IN. X - X X - X MeY b added in mixes. Will GRIM muRi-Flomml mow wt of east smnda. WEEPING IS IN. 5'h X - - X - Wum-suson per•,niaL Mey LOVEGRASS bwch. Tolemtn hot, dry slopes ( curvulel soil acid, infertile mess. May b* added to mixes. KORFAN 25 M. appaa. IN X % - X % - Waw seawn umutl legume. I,65PEDEZ1V IN. Tolerates acid soils. Mey be (jam atiwlecnl added to mixes. Northam Piedmont and Mountain region. See Plates 3.22-1 and 3.22-2. h' Southern Piedmont and Coastal Plain. e May be used as a cover crop with spring seeding. d May be used as a cover crop with fall sailing. X May be planted between these dates. - May St be planted between these dates. 9 VEMPORARY SEEDING C 14 Not To Scale CONSTRUCTION OF A SILT FENCE 100, FLOW EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 12 SILT FENCE SF C14 Not To Scale SHIMP ENGINEERING LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM No. 45IS3 .off �71 Y1�123 k2r O��SSIONAL ECG VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 09.14.2022 REVISION: 1. VSMP Amendment Comments 11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE N0. E&SC DETAILS C 14 0 ' 00` ox0 0 O \ 0 0 OT-0 O �OQ000Q0G 000 0000�0000� O. O �.o 00q0 O00°° o O\ 00°<00 0.000�Q O Q G D.B. 4110, ° �° ° TM 75-59 LY O ° ° ° ° ZONE: R1 RESIDENTIAL O O O ° USE: SINGLE FAMILY RESIDENTIAL O O t O DEDICATED TO ALBEMARLE O AREA COUNTY PER D.B. 660, PG. 774 ° �$ \ °0°0Q O 00G \� O°0 a \ . \O OO� O \ 000 s0 ° L O° 00G O Q000 G ST �0000 R°�T ° ° ° O Q ° Oo .\ 0000000 Rw ° 0 0 0 f- 00 0 ° 0 0° Rivanna River Nutrient Bank August 4, 2020 KENDRA PATRICK, EIT Project Engineer Shimp Engineering, P.C. 912 East High St. Charlottesville, VA 22902 Via email to"Kendra(a)Shimp-Engineering.com With a copy to: Courtney Palumbo (cpal unlbo(tllregents-schooLor¢ Owner: Regents School of Charlottesville Inc. Contact: Courtney Palumbo (cualumbofi rceents-schOol.ore) Project: Regents School of Charlottesville Project No.: 18.020 DEQ SWM No.: Location: Near 1 155 Reservoir Road Charlottesville, VA 22903 Coordinates: (38.024612, -78.538353) Legal Reference: TMP 75-66 & 76-17 Receiving Water: Moores Creek HUC12: 020802040402 Estimated Credits Required: 2.79 lb Dear Kendra and Courtney, O N/F / DAVID HARLOW D.B. 2690, PG. 154 TM 75-61 ZONE: R1 RESIDENTI USE: SINGLE FAMILY R I NTIAL N/F / RICHARD SHRUM / D.B. 2678, PG. 194 TM 75-60 ZONE: R1 RESIDENTIAL / USE: SINGLE FAMILY RESIDENTIAL I TON N/F I N/F / D.B. 4415, PG. 7 CECIL JOHNSON TM 75-61A D.B. 936, PG. 722 ZONE: R1 RESIDENTIAL TM 76-14 / USE: SINGLE FAMILY RESIDENTIAL ZONE: R1 RESIDENTIAL o \ F: SINGLEFAMILYRESIDENTIAL 4 cy L5 122 O°OPEN SPACE 080` ..D�Lp° 5.48 AC O O v OOUO O0 :::::::::` ::::::':,'a'K;::::;:::. . ......1..N�A,`..Jf oNE%`;;:l:;, -''\�� / o° ° .. , , ; , k a ` .......... ; ` .. a . , .. , ... a a .. , , t ` . a , . , , ... ......... 2j/j / �o �VQOOQ �::: °\�\° .r °° :'::;..... MANAGED TURF AREA :...... 0;; O ...6.65ACREs 1II- I -i I I I-IIIIIII�IIEll .......... 0 I C REGENTS SCHOOL :: ll 71M. LEGEND El VRRM-TURF - LOD VRRM - IMPERV. Open Space/ SWM Easement N/F UNIVERSITY OF VIRGINIA FOUNDATION D.B. 4170, PG. 689 TM 76-13B ZONE: R1 RESIDENTIAL N 4"2'44' E USE: SINGLE FAMILY RESIDENTIAL 204.31, AREA DEDICATED TO ALBE =�"''"�•` �--� MDYiLE COUNTY PER INSTJ( 202200003247 11R- 7d . ........... ,, ,,. • , . • . "� LOD rl n f11=1 III `� l r II -I I1=1I I'I I Ir III11 i1I I_I I I_ -III- _ III_II1=III-III <� IMPERVIOUS AREA I . I L-I11= _ III III-III=111I-I� _II _ _ 1-1 I f zss ACRESI_I I III -I � I_ "• .I III=III=III j=i�'_� III _ILu II�(i�II1=11I 1I1=1II� o IJT,i _-+I I�-I�I_I b I�r11=f1 t rrl_TfLI'II 'I 7 II ` ...a.a.;a,t....a.a.,,iia-IIIIIL-:I11=I 11_I_l�1ll1I_-I�1l1=T1i=1111 ��II II-III=11=IINIII1I_III�LI-�IIllIs-II°O .a.,.._1�1O O O :;�IT1=ILI1 Mtn ` Al O.° QoS2s�TO a : ' t . :::::::::: : :::: . - i c/\//\ =1 O OQ�....::::;.,, \ IIIIIIIIII /\i/=1 • ,.,.,a Oho OOOOO 0O .. ..:::::::::::;::' 000' 'o°0°O°QOQOQO¢:::::::::::::::1 \IIILIT\-III\i\il`�ll: ls�;:::::' :�_IIIII aO o O° � :O 0 O O ::`..a.aa::..O�00O OO0400 O0000 OO IIIlI O Certificate No James-039 ��\ ° Oo00Q00 0°\ �;(`;;" •••;;;;;;t"`•.:;;;;::` 000 0QQ OOQ�O °Q� a.. a,.k`,`' ;•a` o "..,. O O ° �+. LOD•r P . \� ° ° ° O O o O O O O Q Loo.UQO' o Q0000Q0O 0 0 Q a„ �E4ya °`°� q\�D °00Q0000000°C PoOq� O N I I=1 11=1 11=1 � LI I I- .`.. \II lilil;` ; i :::::::: o !�!!/\ IIIII\�!\! III \ ..•::::::� t VOA `,qM' BREAK:.. .. t% 0 0 0 O O I ® \ LIMITS OF DISTURBANCE AREA- , O ° Q O / f. 9.55 ACRES °.° 0�6400000 O 0 0 ,po 00 0 0 0 Q 00Q . °0 0 This letter is to confirm the availability to your project (referenced above ) of authorized Nutrient Credits sufficient to meet the your above referenced estimated requirements of Nutrient Credits at our Rivanna River nutrient offset credit bank facility (the "Bank"). The Bank has been registered with the Virginia Department of Environmental Quality (DEQ). These Nutrient Credits are generated and managed under the terms of the Reduction Implementation Plan for the Bank dated November 2017. which was authorized by (DEQ) on September 5, 2018. The Bank has been authorized to provide Nutrient Credits for use in the James River watershed. These credits are transferable to those entities regulated under DEQ's Storm Water Management program in accordance with VA Code 62.1-44.15:27. If we can provide fuq* assistance please feel free to contact our office Hotel Street Cavital, LLC. Bank 71 AMENDMENT : REVISE CREDIT LPURCHASE TO 3.51 LBS/YR 13 Project Name: RegentsSchool Date: 11 9/13/2022 BMP Design SperiTrraticm tat: 2013 Draft Stds & Specs Site Information Post -Development Project (Treatment Volume and Loads) Land Cover (acres( ASo,ls BSoils CSoils DSoils Totals rarest/Open Spacetaaesl - undisturbed, roteaedfomst o ens areorreforested 5.49 5.48 ManagiMTud (acres) -disturbed, graded for anisorotherwrftobe 6.65 6.65 Impervious Cover (acres) 2.89 2.89 'roresr/Open Sp ffareas must bepcorecud/naw"ance svhh Me WMINa RuIWfReduction Merhad 15.02 Constants Annual Rainfall(whes) 43 Target Rainfall Event(inches) 1100 Total Phosphorui(TP)EM=(nWL) 026 Total Nitrogen (TIN) EMC ( 1B6 Target TP Loatl(Ib/acre/Tr) OAS Pj(unitlesscorrectiwtactar) 090 Runoff Coefficients (Rvl Asoik Bsoils CSoils OSon, Fores[/Open Space 0.02 003 On4 0.05 M rftecTurf I 0.15 1 020 1 022 1 0.25 Impervious Cover 1 0.95 1 095 1 0.95 1 0.95 Forest/Open space Caver tacies) SAS Treatment Volume 0.3533 (acre -a) Weighted Rv(foest) 0.09 Treatment Volume(cubk feet) 15,391 %Forest 36% TP load (lb/yr) 9.67 Ma staged Turf Cover(acres) 6.65 SN Laatl(Ib/yr) dn Irrmattanal Pu ases ON 69.18 Weighted Rv(turt) 0.20 %Managed Turf 44% Impervious Cwrer(acres) 2.89 Rv(impervfaus) 0.95 %Impervious 19% Site Ama(acm5) 15.02 Site Rv 029 I� 00 o I Rivanna River Nutrient Bank Certificate No. James-039 IOctober 31, 2022 I BAREFOOT-DIAZ IODRIA Technical Project Engineer I odria@Shimp-Engineering com 15' PRIVATE SANITARY SEWER EASEMENT b''B"5611 PG 639 With a copy to: I Courtney Palumbo (cpalumbonreaents-school.ore Owner: Regents School of Charlottesville Inc. I Contact: Courtney Palumboemail: (cpalumboaaregents-school.org) Project: Regents School of Charlottesville Project No. 18.020 DEQ SWM No. I Location: Near 1155 Reservoir Road Charlottesville, VA 22903 Coordinates: 38.024612,-78.538353 Legal Ref: Albemarle County (TM 75-66 % 76-17) I Receiving Water: Moores CreekHUC12: 020802040402 Estimated Credits Required: 0.80 Lbs/yr Dear Odria and Courtney, I This letter is to confirm the availability to your project (referenced above ) of authorized Nutrient I Credits sufficient to meet the your above referenced estimated requirements of Nutrient Credits at our Rivanna River nutrient offset credit bank facility (the "Bank'. The Bank has been registered with the Virginia Department of Environmental Quality (DEQ). These Nutrient Credits are I generated and managed under the terms of the Reduction Implementation Plan for the Bank dated November 2017, which was authorized by (DEQ) on September 5, 2018. The Bank has been authorized to provide Nutrient Credits for use in the James River watershed. I These credits are transferable to those entities regulated under DEQ's Stone Water Management program in accordance with VA Code 62.1-44.15:27. e If we can provide further assistance please feel free to contact our office. Hotel Street S.LLC, Bank Sponsor By Its kjairilgeif IRivanna River Nutrient Offset Trading Bank, 31 Garrett Street, Warrenton, Virginia 20186 I data inputcelk constant values calculation cells SHIMP ENGINEERING2. LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM ,T11 17 VP a r BO A i SSIONAL VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2022.09.14 REVISION: 1. VSMP Amendment Commentsl1-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. LAND USE MAP 18.020 River Nutrient Offset Trading Bank, 31 Garrett Street, Warrenton, Virginia 20186 400, 80 0 80 160 240 Graphic Scale: 1 Nutrient Credit Letter. C15 \\\\ \ \ \ \ 1 \ D.B. TM7 15 P59 G. 650 \ ZONE: R1 RESIDENTIAL \1 \ \ \y,\ USE: SINGLE FAMILY RESIDENTIAL / AREA DEDICATED TO ALBEMARLE \ 1 1 I�lllll 111111 COUNTY PER D.B. 660, PG. 774 \ / DAVIDNHARLOW O D.B. 2690, PG. 154 O \\\ \ \ \\\ \\ / / 70NE: TRi RESIDENT / USE: SINGLE FAMILY R NTIAL NSF \ \ \\\ \\\\\� / / RICHAR8 SHRUM D.B. 2678, PG. 194 \ \ \ \\ \ // TM 7 -60 ESID \1` J ZONE: M RESIDENTIAL USE: SINGLE FAMILY RESIDENTIAL / TON /DINH D.B. 4415, PG. 7 NSF N/F TM 75-61A D. BE IL JOHNS�22 USE: SINGLE RFAMILYDENTIDENTIAL UNIVERSITY OF VIRGINIA FOUNDATION / TM 76-14 D.B. 4170, PG. 689 ( \ \ ZGkE: RI RESIDENTIAL _ n \ o : SIN L FAMILY RESIDENTIAL ZONE: TRI 76-1RESIDENTIAL ell �( \ \ \—r USE: SINGLE FAMILY RESIDENTIAL EROUTq \\'-AL BEMARPER INSTL=COUNTY D - # 202200003247 PoA B I I WOODS \ j N TOC=17.9 n\ 1 Y MANAGED TURF DRAINAGE AREA TO p ° ° p MANAGED TURF \ v ¢(q� p ° ° °p°ppp_IMPERVIOUS / \ 1° INT POOF ANALYSISB °Iopo S" ( ���YYC���/ Jy 3.55ACRES,CN=58 "xxx"xxxxxxx""xxxxx°OOOo X\\\\ c\q�/oo� /�_S� / p°xz\xxx xxxxxx=xxxxxx=xxxo°°°O°\g° \\ \\ '— \\"\'� opoo�°�'oSpxxn�° ° 69OP° A4I9/ooOO cc)0 o o 0 o fO� 0 0\Oo-0 o o oo°o0OO��O°a o 00°° io0° 0.���l0 0 o 0 -V\e s� o, �0 woD�Ao�RAINAGE ARETO O o�\oo}n \--- —,— — _-%— —�— %\\a \ \ \\ \\ \\ I \ I �j\ Q9 POINT OF ANALYSIS A ND o era�`Q Qg 6.46 ACRES, CN = 60 \x�� =\ O400�0o%o�%O oo� o ' \ I J / l Vo i \ram.�p�.��\\\\\\\��— \\ \ `— �aE• a __ /�__ / //i%i /// / / / 1 \\ \\ \ �1 \\ \\ \ \ \ — — _ — 9F�1STt1RBANCE ARE � � / / / ( I ( ( \ — — — 15 A AT \ O9.5ACR ( l \\\ \ 1-- \�A�'��ias TSE `\ \ I\ l/\IIIII III► ,J I/° I - \ems\ \\ \\ II11111\ 1 \\\ \ tI \ REGENTS SCHOOL PRE DEVELOPMENT DRAINAGE AREA OVERVIEW LEGEND 0o PRE DA - POA (A) - WOOD — — — — PRE DA _POA (A) — — — — PRE DA _POA (B) PRE -TOC PRE DA - POA (A) - IMPERV. oo� LOD +++ PRE DA - POA (A) - TURF ALL SOIL HSG: B PRE DA - POA (B) - WOOD Rvvv v v vvv PRE DA - POA (B) - TURF vv AMENDMENT: RECALCULATED PREDEV DRAINAGE AREA TO INCLUDE NEW, LARGER I LIMITS OF DISTURBANCE. SEE SHEET C17 I FOR ADDITIONAL DETAIL. I L J \ '71\-x \ e SHIMP ENGINEERING2. LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM T11 1610 G Z ( I I h-S 4r O��`SSIONAL E�O� VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2022.09.14 REVISION: 1. VSMP Amendment Comments11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. 18.020 PRE DEVELOPMENT DRAINAGE AREA MAP C16 \ N/F WILLIAM HURTT D.B. 4110, PG. 650 \\\ \ \ \ \ TM 75-59 \\ Il 1\ 1 I ZONE: RI RESIDENTIAL 1 USE: SINGLE FAMILY RESIDENTIAL 1 AREA DEDICATED TO ALBEMARLE COUNTY PER O.B. 660, PG. 774 \�� VA� XA�\V�\ \\\`\\ \ \\\ N/F DAVID , PC. 1 / D.B. TM 7 PG. 154 TM 75-61 ZONE: R1 RESIDENTI USE: SINGLE FAMILY R I NTIAL N/F RICHARD SHRUM D.B. 2678, PG. 194 / / TM 75-60 ZONE: R1 RESIDENTIAL USE: SINGLE FAMILY RESIDENTIAL / T \ / N/F TM 75-61A CECIL JOHNSON ZONE: R1 RESIDENTIAL D.B. 936, PG. 722 USE: SINGLE FAMILY RESIDENTIAL � TM 76-14 ZG E: RI RESIDENTIAL SIN L FAMILY RESIDENTIAL \\\\ ° < < / MEADOW MANAGED TURF Y \A D TURF MANAGE�/< \ \ DRAINAGE AREA TO POINT \ < TOC=16.2 \\\ \ \ OF ANALYSIS B \ 1.70 ACRES, CN = 60 ' \ \ \` � O O °SOP'�� =1 I- \\\� \ \ \\ C E E�A 2E \" I I I N/F ' I I I TON DINH D.B. 4415 PG 7 O N REGENTS SCHOOL POST DEVELOPMENT DRAINAGE AREA OVERVIEW LEGEND POST DA POA (A) LLL POST DA - POA (A) - TURF — POST DA (B) LLL _POA POST DA - POA (A) - IMPERV. POST - TOC _ Lop_ LOD 0000 0000 - POA (B) -TURF ALL SOIL HSG: B MPOSTDA 0000 0000 MPOST DA - POA (B) - MEADOW N/F AMENDMENT: RECALCULATED POSTDEV DRAINAGE AREA TO INCLUDE NEW, LARGER LIMITS UNIVERSITY of VIR70, PG. 689 IA FOUNDATION 4170, POF DISTURBANCE. AMENDMENT ADDS 0.69 ACRES TO POA A, AND 0.10 ACRES TO POA B. D.B. D.I TM 76-13B ZONE: R1 RESIDENTIAL USE: SINGLE FAMILY RESIDENTIAL RUNOFF TO POA A STILL MEETS 9VAC25-870-66.B.1.a. AND 9VAC25-870-66.C.3.a BECAUSE THE CONTRIBUTING DRAINAGE AREA REMAINS LESS THAN 1 % OF THE TOTAL DRAINAGE AREA AT AREA------ -�p� �- �\L �NTY PER INST THE POA, WHICH IS OF DISCHARGE INTO MOORES CREEK. THIS PORTION OF MOORES CREEK o E _ # zozz00003247 I IS A MANMADE CHANNEL. < RUNOFF TO POA B STILL MEETS 9VAC25-870-66.B.3.a. AND 9VAC25-870-66.C.2.b. BECAUSE THE \, 7RUNOFF DISCHARGED TO THIS POA, WHICH IS IN A NATURAL CHANNEL PRONE TO FLOODING, IS BELOW THE ALLOWABLE PEAK FLOW RATE REQUIRED BY THESE REGULATIONS. < w�� % _� III—fin<Y< MANAGED TURF 0 0/1 << =__/l / l I \ 1\ \-- \ 15 4 AT \ J"l F^e � as�aasx�acEl E' <—_— �AN\1- RYSE-�VEP 9. \\ \ c \ \ _\ \ \ < DRAINAGE AREA TO POINT J \� \ <-OFANALYSIS A I 1 %jJlllllj11l/�/l10 7.85 ACRES, CN = 75 \\\\ \ \ \ ✓ �\ I III II IIIf�/ _ / \\ \N \ \\ 1\ i SHIMP ENGINEERING2. LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM ,TH L•J �� I,'2 0 F T�k'rSIONAL ti�G VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2022.09.14 REVISION: 1. VSMP Amendment Comments11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. POST DEVELOPMENT DRAINAGE MAP 18.020 80 0 80 160 240 C17 Graphic Scale: 1 "=80' N /F RICHARD SHRUM D.B. 2678, PG. 194 / TM 75-60 ZONE: R1 RESIDENTIAL USE: SINGLE FAMILY RESIDENTIAL / \ N/F I TON DINH D.B. 4415, PG. 7 n TM 75-61A \ 01 _ ( 1 \ 1 b \ \ / ZONE: R1 RESIDENTIAL \ USE: SINGLE FAMILY RESIDENTIAL O O \ II N /F CECIL JOHNSON D.B. 936, PG. 722 TM 76-14 RESIDENTIAL N LFAMILY RESIDENTIAL \ \ SOD — ° \ \ \ \ L _ --�\ _ AR \ \ \ \ DITCH E ( ) C 0 46 AC2 DA / j g/4\ III D BUILDING \VA III SHOULDER A% 1 M2'1 N /F UNIVERSITY OF VIRGINIA FOUNDATION D.B. 4170, PG. 689 TM 76-13B ZONE: R1 RESIDENTIAL USE: SINGLE FAMILY RESIDENTIAL L INS \ � \ � 0�003 247 DITCH (Al) DA 3.07 AC SLOPE / � o/m \ \ \ \ \ \ \ \ \ \ 1 /11 \%\ 'III— \ / \ ELOCA \ \\\ I ��[ns[M NTH STIR A4 DA \ \ \ \ \ D / / I J / \/ % \ / \ 0.69 AC z sa DRAINAGE AREA TO POINT I I �j � \ STR A3a DA \ \ a OF ANALYSIS B / �\ 0.36 AC \ C = 0.34 1.70 ACRES, CN = 60 / / / I I I I I \/ \/i /\ C = 0.90 STIR B4-B2 DA / —� \ l ' I \/ I I O m- 0.81 AC, / / / \ . \ I I I 8 ////\ \,I'. 2 — \ \ l \< / of I'\ / //j 11 �_�___=_ENO \\ \ p DI- % 0.27 AC EACH / i _ _ 7 C = 0.30 — — STIR Aod-AOb DA 1 / , DI \//\/\\ / I T I �I I I 1=f 1 177 � �l I l� —cT1 T-TT 1.43 AC, 0.48AC EACH ( ® '/\\\ \\ / I;�1 I I T I I_ —I I I =1 1 I_ � \ _ — — III__ I _ _ III_— \ �= 0.327 I_ STIR A3 DA O 0.51 AC C = 0.77 I _ ' A V v A v� III \ WALLE� MAX e' HEM —III_ — —I — _ =III_ _—_ III_ \\\\\\ 1 1 es / �_ �/ J It �I�qI I II — II _ I�IIST0.45ACA l l _ i WALL B �7 / / / / 1= �I I �I 1 �T �r I ICI I C = 0.54 1 WALL E1 \\ IN J / M� HE�rf � , • \\�\//\�/\\\ i' I I � :%f j STR A2 DA — � �, I I I_ -- I I ICI I h / \ \ \ � � \ \ �— O I MA% - w0' PCHT •-.� \ \ \\ I I 0.50AC D• DRAIC 0.85 Nri�PLAST ICI I \ YARD N = \ \ / 7 � YARD DRAIN W/ PIED GRATE DA �\\ R"'" / \ REGENTS SCHOOL STRUCTURES DRAINAGE AREA OVERVIEW LEGEND ❑ TURF IMPERV. \�\A ROOF DRAIN 0.10 AC, /w °N to AOa \\ o.,4 AC '-WALL I I,I LcT \ MHW \\ \\ ` 0.311 AC 06 YARD DRAIN DA 0.12 AC 0.038 AC EACH\\ 1 I' C,4E�IS EASEMENT ✓ \ _/ f -1 \ \ _C= 0.30W / / O / �DB(SD1 i PB 639 / I S — 1 / GRADE cl -_ 525DtpH-��6 / �- �� p � DITCH DA 2 0 / .5 AC �. � !p�- `-- DITCH (Cl) DA // / / i Ko LO 15\PRI AT \ \1 1 1 \ 1 a o \\ ` DRAINAGE AREA TO POINT \\ O OF ANALYSIS A \ 00 7.85 ACRES, CN = 75 — LOD ALL SOIL HSG: B SHIMP ENGINEERING2. LAND PLANNING - PROJECT MANAGEMENT 912 E. HIGH ST. 434.227.5140 CHARLOTTESVILLE VA, 22902 JUSTIN@SHIMP-ENGINEERING.COM I IO �s .Sa Li a No. 45 1AP V4 Z 114123 @� S/ONAL EEO VSMP PLAN AMENDMENT REGENTS SCHOOL ALBEMARLE COUNTY, VIRGINIA SUBMISSION: 2022.09.14 REVISION: 1. VSMP Amendment Comments11-03-2022 2. VSMP Amendment Comments 02-14-2023 FILE NO. STRUCTURES DRAINAGE MAP 18.020 80 0 80 160 240 Graphic Scale: 1 "=50' C19-