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Home My WebLink About39-24 Site PlanGENERAL NOTES1.The contractor shall furnish materials and equipment to perform all work to deliver the completed improvements shown or implied as necessary forthe completed project ready for use, inclusive of all site restoration and stabilization. Unless otherwise noted, specifications for all work to be inaccordance with applicable Virginia Department of Transportation Road and Bridge Standards, the Virginia Department of Environmental QualityErosion and Sediment Control Handbook, and the Virginia Department of Transportation Road and Bridge Specifications.2.All construction and methods shall comply with the latest U.S. Department of Labor, occupational safety and health administration (OSHA), andVirginia Occupational Safety & Health (VOSHA) rules and regulations.3.The contractor shall comply with title 56, chapter 10.3 et. seq. of the Code of Virginia (Underground Utility damage Prevention Act).4.The contractor shall comply with title 59.1, chapter 30 section 406, et. seq. of the Code of Virginia (overhead high voltage lines safety act).5.The placement of a construction trailer, fencing, parking, and staging areas shall be coordinated with and approved by the the property owner anddeveloper.6.Access for emergency and utility service vehicles shall be maintained to the area surrounding the site.7.The Contractor shall be responsible for hiring a surveyor to provide construction surveying stake out.8.The Contractor shall be responsible for hiring a testing firm to provide all earthwork and compaction testing.9.This design is based on topographic mapping and boundary survey provided by Lellock Consulting, PC.10.The engineer has attempted to show all subsurface utilities, however, such may exist that are not shown. The contractor shall exercise care in thiswork so as to avoid damage to any utilities. Any damage shall be the responsibility of the contractor. The contractor shall notify Miss Utility ofVirginia 72 hours prior to digging.11.All disturbed surfaces outside of the work area shall be restored to the pre-construction condition by the contractor at the contractor's expense.12.Contractor shall ensure adequate drainage is achieved and maintained on the site during and at the end of construction.13.Any unusual subsurface conditions (e.g., unsuitable soils, springs, sinkholes, voids, caves, etc.) encountered during the course of construction shallbe immediately brought to the attention of the engineer. Work shall cease in that vicinity until an adequate design can be determined by theengineer and approved.14.All surfaces and slopes shall provide positive drainage away from the project area.EARTHWORK NOTES1.All embankments (fill) placed on this project are to be controlled fills.2.All excavation is unclassified.3.Materials - Suitable excavated material shall be used in forming the embankments. Materials classified as OL, OH, or Pt are not suitable for use ascontrolled fill. The on-site high plasticity soils are generally suitable for re-use as controlled fill provided that proper drainage, grading, and slopingaway from the structures is maintained both during and after construction. Blasted or “shot” rock can be utilized for fill provided that the maximumparticle size of the rock not exceed 12 inches and sufficient amounts of soil fines be mixed with the rock to fill in open voids between the rockparticles. The nesting of boulders in the embankment is prohibited. The material to be used in embankments shall be free of frozen or organicmaterials such as leaves, roots, grass, weeds, and all other material not consistent with construction of a stable, homogeneous fill. Embankmentsshall not be constructed on frozen ground.All proposed fill materials should be approved by the geotechnical engineer prior to placement as controlled fill, and representative samples shouldbe obtained one week prior to placement of that material to allow time for completion of the necessary laboratory tests.4.Site Preparation - All vegetation and topsoil shall be removed from areas upon which embankment will be constructed. Topsoil shall be stockpiledas a berm on the east and north sides of the site and stabilized as required by the E&S plan. Vegetation shall shall be converted to mulch and usedfor E&S control or removed from the site by the contractor. All sloping areas upon which fill is to be placed should be benched or “notched” so thata smooth interface between existing ground and new fill will not be present. Each layer of fill should be benched into the existing ground aminimum of 3 feet horizontally and the depth of one fill layer. Flat areas upon which fill is to be placed shall be deeply plowed to allow for bondingwith the existing material. The controlled fill slopes and embankments should be constructed at the designed 2H:1V slopes or flatter.5.Formation in Layers - Unless otherwise provided, embankments shall be constructed in successive layers no more than 6 inches thick, loosemeasurement. Where embankments are built by dumping from draglines, trucks, or other similar equipment, a bulldozer must be operatedconstantly to spread the material. These layers must be full width of embankment, each thoroughly compacted, built to the true slope, and notwidened with loose material from the top. When embankments are being constructed principally of rock, the depth of each layer shall be carefullydistributed throughout the embankment, and the voids shall be filled with fine material to secure the maximum density. The most suitable materialshall be reserved for top 2 feet of the embankment.Large stones with any dimension greater than six inches shall not be permitted within two (2) feet of the design subgrade. As the embankment isconsolidated, the slopes shall be carefully dressed to the desired section and maintained to their proper height, dimensions, and shape until thework is accepted. When transporting material with rubber-tired equipment, care shall be taken to see that the trailing units do not follow in thetracks of the preceding unit. At the end of each day's work the embankment shall be dressed to shed any water that might fall during the night.6.Density - Suitable compaction equipment shall be continuously operated while embankments are being constructed. All fill materialcompacted by heavy compaction equipment should be placed in maximum 6-inch loose lifts for the uppermost zones previously described and12-inch loose lifts for the deeper fill areas. In areas where larger rock is utilized, the size of the loose lift will be dependent on the quantity of rockwithin the overall fill matrix . All fill material compacted by hand- operated tampers or light compaction equipment should be placed in maximum4-inch loose lifts. While work is progressing in separate areas, approved compaction equipment shall be operated continuously in eachembankment area.Prior to compaction, the moisture content of each layer should be adjusted, as necessary, to obtain the required moisture content to achieve thespecified compaction level. Each layer should be compacted to the required percentage of maximum dry density. Fill should not be placed onsurfaces that are muddy or frozen, or have not been approved by testing and/or proof-rolling. Free water should be prevented from appearing onthe surface during or subsequent to compaction operations. Soil material which is removed because it is too wet to permit proper compaction canbe stockpiled, or spread and allowed to dry. Drying can be facilitated by discing or harrowing until the moisture content is reduced to an acceptablelevel. When the soil is too dry, water should be applied uniformly to the subgrade surface or to the layer to be compacted.Compaction of the embankments shall be to density of 95 percent of that obtained in a Standard Proctor Density Test, ASTM D-1557. Themoisture content of the soils should be within three (3) percentage points of the optimum moisture content. In areas where mixtures of shot rockand soil fill are placed, minimum passes with compaction equipment should be established during construction. All areas should be proof-rolledwith approved equipment for acceptance of compaction by the geotechnical engineer where density tests cannot be reasonably conducted.Material that does not contain adequate moisture to obtain specified density shall require the incorporation of additional water. Materialcontaining an excess amount of moisture shall not be placed in an embankment until it has been allowed to dry to the design moisture content.7.All blasting operations shall be performed in accordance with the Fire Marshall's requirements. The contractor shall protect the overhead powerlines and towers from fly rock and its associated damage.Drainage Notes1.The contractor shall maintain positive drainage on the site at all times.APPROVED BY:SIGNATURE:DATE:SITE PLAN VALID FOR FIVE YEARS FROM APPROVAL DATE.APPROVED BY FREDERICK CO. ZONING ADMINISTRATORDEVELOPERPine Knoll Construction115 Jeff's WayClear Brook, VA 22624540.667.3092LAND OWNERO-N Minerals (Chemstone) Companyd/b/a Carmeuse Lime & Stone11 Stanwix St, FL 21Pittsburgh, PA540.465.6802ENGINEERStowe Engineering, PLC103 Heath CourtWinchester, VA 22602540.686.7373EROSION AND SEDIMENT CONTROL NOTES1.This project disturbs 3.0 acres and designed to meet the requirements of the VA DEQ Erosion &Sediment Control regulations. The contractor shall abide by the Erosion and Sediment Control Plan inthis plan set.2.Upon completion of construction the contractor shall restore the surrounding area to itspre-construction state, ensuring positive drainage is achieved and all areas are permanently stabilizedwith permanent seeding and mulch.3.Slopes in the project area shall be a maximum of 2:1.Vicinity Mapscale: 1" = 1000'PROJECTLOCATIONTITLE SHEET AND NOTES SITE PLANEQUIPMENT AND MATERIAL STAGING FOR PINE KNOLL CONSTRUCTIONFREDERICK COUNTY, VASITE PLAN # 39-24Walters Mill RoadInterstate 81 OUTDOOR LIGHTING NOTESNo outdoor lighting is proposedPARKINGNo employees will work at this site, therefore parking is not proposed. Employees will come to the site via PineKnoll equipment or transport.ZONING BUFFERSLOCAL UTILITY SERVICE PROVIDERSWATER AND SEWERFREDERICK WATER315 TASKER ROADSTEPHENS CITY, VA 22655540.868.1061ELECTRIC SERVICESHENANDOAH VALLEY ELECTRIC COOP3463 VALLEY AVEWINCHESTER, VA 22602540.450.0111TELEPHONE SERVICEVERIZON404 HILLANDALE LANEWINCHESTER, VA 22602540.665.3153CABLE SERVICECOMCAST COMMUNICATIONS195 RAINVILLE ROADWINCHESTER, VA 22602Route 11Carmeuse QuarryRockinghamRedi-MixDATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/2411 580590600610620610600 590N/F: O-N MINERALS(CHEMSTONE COMPANY)TM: 44-A-97INST.# 24 0002041ZONING: EMLEASE AREA BOUNDARY584580582582578+ 577.0+582.5+583.5+583.5+583.5 +583.558215' STONEOUTLETDATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24EXISTING CONDITIONS, ADJACENT ROADS AND PROPERTY OWNERS0100200Walters Mill Lane - Route 836Partner of Choice Ln (private)Rockingham Redi-MixSVEC Sub-StationLease and Project AreaWSEEEEXXXWGENERAL LEGEND OF SYMBOLS 590REMOVE TOPSOIL FOR USE IN PERMANANTBERMS, PLACE 6" 21-A AGGREGATE WHERETOPSOIL IS REMOVEDBERMS TO BE COMPACTED, SEEDED,AND USED AS DIVERSION DIKES DURINGCONSTRUCTION.18" HDPE CULVERT.PROVIDE 1' COVERInv In = 587.70Inv Out = 587.3025' (typ)ENTRANCE TORECEIVE 8" 21-ACOMPACTEDAGGREGATE,PLACED ONCOMPACTEDSUBGRADE.CHANNEL TO BE LINEDWITH CCX-Mat. See sectionthis sheet and calculations onsheet 6.Class 1 RipRapLa = 20'Class 1580590600610620610600 590N/F: O-N MINERALS(CHEMSTONE COMPANY)TM: 44-A-97INST.# 24 0002041ZONING: EMEx.Edge of GravelN/F: O-N MINERALS(CHEMSTONE COMPANY)TM: 44-A-97INST.# 24 0002041ZONING: EMDATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24SITE AND GRADING PLAN030604'2:1 (typ)2'CHANNEL SECTIONntsCCX-Mat Geosynthetic Cementitious Composite Matby Concrete Canvas USA or approved equal. X X X XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX X X X X XXXXX>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>> > > > > > > > >CESFDDSFSFSFDDDDDDRRST3 2BHYD GRP C1BHYD GRP B1CHYD GRP B41EHYD GRP DTSDD = 21"CHANNEL TO BE LINEDWITH CCX-Mat. See sectionthis sheet and calculations onsheet 6.580590600610620610600 590Ex.Edge of GravelN/F: O-N MINERALS(CHEMSTONE COMPANY)TM: 44-A-97INST.# 24 0002041ZONING: EM590X X X XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX X X X X XXXXX>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>> > > > > > > > >CESFDDSFSFSFDDDDDDRRSTTS PS TSPSTS PS TSPS3 2BHYD GRP C1BHYD GRP B1CHYD GRP B41EHYD GRP DTSDD = 21"CHANNEL TO BE LINEDWITH CCX-Mat. See sectionthis sheet and calculations onsheet 6.Class 1 RipRapLa = 20'Class 1580590600610620610600 590Ex.Edge of GravelN/F: O-N MINERALS(CHEMSTONE COMPANY)TM: 44-A-97INST.# 24 0002041ZONING: EMDATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24EROSION & SEDIMENT CONTROL PLANS AND NARRATIVE03060 Erosion and Sediment Control NarrativeProject DescriptionThis project consists of constructing a contractor equipment and material storage area for a contractor working in the Carmeuse quarry. 3.0acres of land will be disturbed with the construction of this project.Date of ConstructionConstruction is planned to begin the 4th quarter of 2024 and end in the 4th quarter of 2024.Existing Site ConditionsThe site is currently undeveloped.Adjacent PropertyThe project is located in Frederick County along Partner of Choice Drive, just south of the Rockingham Redi-Mix plant in Clear Brook, VA.Offsite AreasThere are no planned off-site borrow or disposal areas associated with this project.SoilsGeologyNo rock outcrops or karst features were observed.Critical Erosion AreasAreas where concentrated stormwater is discharging will be critical.Erosion and Sediment Control MeasuresUnless otherwise indicated, all vegetative and structural erosion and sediment control practices shall be constructed and maintainedaccording to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook. The minimum standards of thehandbook shall be adhered to unless otherwise waived or approved by a variance.CONSTRUCTION NARRATIVEThe work shall generally be carried out in the following sequence:PHASE 11.Hold pre-construction meeting on-site with the inspector. The Frederick County inspector shall have 48 hours notice to schedule anon-site pre-construction inspection following the issuance of a land disturbance permit. The certified responsible land disturber mustattend the pre-construction meeting2.Install the construction entrance. Temporary Construction Entrance (3.02) installed at the entrance to the site to minimize mud carriedonto the roadway.3.Install perimeter controls. Clearing and grubbing for sediment control and sediment trapping devices only. Silt Fence Barrier (3.05) ortemporary diversion dikes (3.09) are to be installed down-slope of work areas and around the on-site stockpile area to filtersediment-laden runoff from sheet flow as indicated on the plans. Temporary Sediment Traps (3.13) are to be installed to capturesediment laden runoff and allow the sediment to settle out.4.Construct and/or place sediment trapping and sediment control devices if needed.PHASE 21.Clear and grub the remainder of the site. Topsoil that is to be used in the final grading of grassed areas shall be stripped and stockpiledon site for later use. The excess topsoil shall be removed and disposed of by the contractor. All stockpiles shall be stabilized withseeding and surrounded with silt fence. Aggregate that is excavated shall be stockpiled for later use where needed.2.Rough grade the site.3.Storm drain structures and pipe shall be installed. Culvert Inlet Protection (3.08) shall be installed as shown on the plans around inletsto filter sediment-laden runoff. The area shall be stabilized upon completion of grading.5.Final grading.6.Top Soiling (3.30) and Surface Roughening (3.29) shall be applied to all areas that will be seeded. Aggregate shall be applied forstabilization to areas between the concrete pad storage areas.7.Permanent Seeding (3.32) shall be applied as soon as the grading operations are completed.8.Remove erosion and sediment control measures within 30 days from when they are no longer needed and with approval of theinspector.Vegetative PracticesTemporary seeding (3.31) soil stabilization shall be applied to denuded areas within seven days after the final grading is complete on anyportion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but willremain dormant for longer than 30 days, but less than one year. Permanent stabilization shall be applied to areas that are to be left dormantfor more than one year.Stockpile areas shall be surrounded with silt fence and protected by mulch and/or temporary seeding immediately after grading.Diversion dike and temporary sediment trap embankments shall be compacted by machine, seeded and mulched (hay mulch or straw) fortemporary and/or permanent vegetative cover immediately after construction.Vegetative stabilization shall be uniform, mature enough to survive, and adequate to inhibit erosion. Any areas not meeting theserequirements shall be reseeded.Management PracticesConstruction will be carried out so that grading operations can begin and end as quickly as possible.Sediment trapping measures will be installed as the first step in grading. These measures will be seeded and mulched immediately followinginstallation.Temporary seeding or other stabilization will follow immediately after grading. Areas which are not to be disturbed will be clearly marked byflags, signs, etc. The job superintendent shall be responsible for the installation and maintenance of all erosion and sediment controlpractices. Maintenance of these measures throughout the project is critical to the effectiveness of the program. Devices listed herein areconsidered to be minimum erosion and sediment controls. Addition E&S measures may be necessary due to contractor phasing or otherunforeseen conditions. It is the contractor's responsibility to provide measures in addition to those shown in order to control erosion andcontain sediment on the site. All measures shall be installed in accordance with the Virginia Erosion and Sediment Control Handbook. Afterachieving adequate stabilization, the temporary E&S controls will be cleaned up and removed.Permanent StabilizationAll areas disturbed by construction shall be stabilized with permanent seeding immediately following finish grading. Seeding shall be donewith Kentucky 31 Tall Fescue according to Std. & Spec. 3.32, PERMANENT SEEDING, of the handbook. Mulch (straw or fiber) will be installedover fill slopes which have been brought to final grade and have been seeded to protect the slopes from hill and gully erosion and to allowthe seed to germinate properly will be used on relatively flat areas. In all seeding operations, seed, fertilizer, and lime will be applied beforemulching.STORMWATER MANAGEMENTThis project replaces a portion of an open field with compacted aggregate. 3.0 acres of the site flow towards Clear Brook Run. The projectarea is less than 1% of the upstream drainage area of Clear Brook Run, therefore no additional stormwater management facilities areproposed for this site.MAINTENANCEIn general, all erosion and sediment control measures will be checked daily and after each rainfall event. The following items are to bechecked:1.The gravel construction entrance shall be checked regularly for sediment buildup which will prevent drainage. If the gravel is clogged bysediment, it shall be removed and cleaned or replaced.2.The silt fence shall be checked after each storm event. Silt shall be cleaned out and repairs made when needed.3.The seeded areas will be checked regularly to ensure that a good stand is maintained. Areas should be fertilized and reseeded asneeded.4.The contractor shall be responsible for keeping all roads and travel ways, both public and private, clean of all dust and mud at all times.5.All downstream properties and waterways shall be provided adequate protection from erosion and sediment deposition.SEEDING SCHEDULE1.All permanent seeding shall be in accordance with section 3.32 of the VESCH.2.On non-rock surfaces, spread topsoil at a minimum depth of four inches.3.Incorporate pulverized agricultural lime into the soil at a rate of 92 lbs. per 1000 sq. ft. (2 tons per acre).4.Fertilize with 10-10-10 fertilizer at a rate of 23 lbs. per 1000 sq. ft. (1000 lbs. per acre).5.Seed all areas with a seed mix consisting of 67% Kentucky 31 Tall Fescue and 33% Red Top Clover.6.Mulch all seeded areas with straw mulch applied at a rate of 3,500 lbs. per acre anchored with cutback or emulsified asphalt applied ata rate of 200 gallons per acre.DUST CONTROL1.Temporary seeding shall be applied to all disturbed areas subject to little or no construction traffic.2.All haul roads and other heavy traffic routes shall be sprinkled with water until the surface is wet. This process shall be repeated asneeded to control dust.MINIMUM CONSTRUCTION EROSION & SEDIMENT CONTROL STANDARDS9VAC25-840-40. Minimum standards.A VESCP must be consistent with the following criteria, techniques and methods:1.Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on anyportion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but willremain dormant for longer than 14 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year.2.During construction of the project, soil stock piles and borrow areas shall be stabilized or protected with sediment trapping measures.The applicant is responsible for the temporary protection and permanent stabilization of all soil stockpiles on site as well as borrow areasand soil intentionally transported from the project site.3.A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shallnot be considered established until a ground cover is achieved that is uniform, mature enough to survive and will inhibit erosion.4.Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as afirst step in any land-disturbing activity and shall be made functional before upslope land disturbance takes place.5.Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation.6.Sediment traps and sediment basins shall be designed and constructed based upon the total drainage area to be served by the trap orbasin.a.The minimum storage capacity of a sediment trap shall be 134 cubic yards per acre of drainage area and the trap shall only controldrainage areas less than three acres.b.Surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres shall becontrolled by a sediment basin. The minimum storage capacity of a sediment basin shall be 134 cubic yards per acre of drainage area. Theoutfall system shall, at a minimum, maintain the structural integrity of the basin during a 25-year storm of 24-hour duration. Runoffcoefficients used in runoff calculations shall correspond to a bare earth condition or those conditions expected to exist while the sedimentbasin is utilized.7.Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion. Slopes that are found to be erodingexcessively within one year of permanent stabilization shall be provided with additional slope stabilizing measures until the problem iscorrected.8.Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flumeor slope drain structure.9.Whenever water seeps from a slope face, adequate drainage or other protection shall be provided.10.All storm sewer inlets that are made operable during construction shall be protected so that sediment-laden water cannot enter theconveyance system without first being filtered or otherwise treated to remove sediment.11.Before newly constructed stormwater conveyance channels or pipes are made operational, adequate outlet protection and any requiredtemporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel.12.When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport andstabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction ofcauseways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials.13.When a live watercourse must be crossed by construction vehicles more than twice in any six-month period, a temporary vehicularstream crossing constructed of nonerodible material shall be provided.14.All applicable federal, state and local requirements pertaining to working in or crossing live watercourses shall be met.15.The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed.16.Underground utility lines shall be installed in accordance with the following standards in addition to other applicable criteria:a.No more than 500 linear feet of trench may be opened at one time.b.Excavated material shall be placed on the uphill side of trenches.c.Effluent from dewatering operations shall be filtered or passed through an approved sediment trapping device, or both, and dischargedin a manner that does not adversely affect flowing streams or off-site 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 this chapter.f.Applicable safety requirements shall be complied with.17.Where construction vehicle access routes intersect paved or public roads, provisions shall be made to minimize the transport ofsediment by vehicular tracking onto the paved surface. Where sediment is transported onto a paved or public road surface, the road surfaceshall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and transported to asediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply toindividual development lots as well as to larger land-disturbing activities.18.All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after thetemporary measures are no longer needed, unless otherwise authorized by the VESCP authority. Trapped sediment and the disturbed soilareas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation.19.Properties and waterways downstream from development sites shall be protected from sediment deposition, erosion and damage dueto increases in volume, velocity and peak flow rate of stormwater runoff for the stated frequency storm of 24-hour duration in accordancewith the following standards and criteria. Stream restoration and relocation projects that incorporate natural channel design concepts are notman-made channels and shall be exempt from any flow rate capacity and velocity 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-madereceiving channel, pipe or storm sewer system. For those sites where runoff is discharged into a pipe or pipe system, downstream stabilityanalyses 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 greaterthan 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 norcause erosion of channel bed or banks.(a)All previously constructed man-made channels shall be analyzed by the use of a ten-year storm to verify that stormwater will notovertop 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(b)Pipes and storm sewer systems shall be analyzed by the use of a ten-year storm to verify that stormwater will be contained within thepipe 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 tochannel 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 two- year storm to increase when runoff outfallsinto a natural channel or will not cause the pre- development peak runoff rate from a ten-year storm to increase when runoff outfalls intoa man- made channel; or provide a combination of channel improvement, stormwater detention or other measures which is satisfactory tothe 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 subjectproject.f.If the applicant chooses an option that includes stormwater detention, he shall obtain approval from the VESCP of a plan formaintenance of the detention facilities. The plan shall set forth the maintenance requirements of the facility and the person responsible forperforming 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 alldetention 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 shallnot be considered to be separate development projects. Instead, the development, as a whole, shall be considered to be a singledevelopment 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.Any plan approved prior to July 1, 2014, that provides for stormwater management that addresses any flow rate capacity and velocityrequirements for natural or man-made channels shall satisfy the flow rate capacity and velocity requirements for natural or man-madechannels if the practices are designed to (i) detain the water quality volume and to release it over 48 hours; (ii) detain and release over a24-hour period the expected rainfall resulting from the one year, 24- hour storm; and (iii) reduce the allowable peak flow rate resulting fromthe 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 goodforested condition, achieved through multiplication of the forested peak flow rate by a reduction factor that is equal to the runoff volumefrom the site when it was in a good forested condition divided by the runoff volume from the site in its proposed condition, and shall beexempt from any flow rate capacity and velocity requirements for natural or man-made channels as defined in any regulations promulgatedpursuant to § 62.1-44.15:54 or 62.1- 44.15:65 of the Act.l.For plans approved on and after July 1, 2014, the flow rate capacity and velocity requirements of § 62.1-44.15:52 A of the Act and thissubsection shall be satisfied by compliance with water quantity requirements in the Stormwater Management Act (§62.1-44.15:24 et seq. ofthe Code of Virginia) and attendant regulations, unless such land-disturbing activities are in accordance with 9VAC25-870-48 of the VirginiaStormwater Management Program (VSMP) Permit Regulations.m.Compliance with the water quantity minimum standards set out in 9VAC25-870-66 of the Virginia Stormwater Management Program(VSMP) Permit Regulations shall be deemed to satisfy the requirements of Minimum Standard 19.03060 XXXXXXXXXXXXXXXXXXXXXXXXXXTSD580590584580582582578+ 577.0+582.5+583.5+583.5 +583.5 +583.558215' STONEOUTLETDATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24EROSION & SEDIMENT CONTROL LEGENDS AND SEDIMENT TRAP GRADING02040TEMPORARY SEDIMENT TRAP GRADING PLAN1 DATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24EROSION & SEDIMENT CONTROL DETAILS1 DATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24EROSION & SEDIMENT CONTROL DETAILS 1 DRAINAGE AREA =9.49 SQ MI (6077.0 AC)PROJECTLOCATIONANALYSISPOINTSTORMWATER DATA AND COMPUTATIONS STORM WATER NARRATIVE:DRAINAGE AREATHIS PROJECT INVOLVES THE CONSTRUCTION OF A CONTRACTOR STAGINGAREA. A GRAVEL SURFACE WILL COVER APPROXIMATELY 2.2 ACRES AND TOPSOILWILL BE STORED ON APPROXIMATELY 0.8 ACRES. DRAINAGE FROM THE SITETRAVELS EAST TO CLEAR BROOK RUN. THE PROJECT DEVELOPS 3.0 ACRES ANDTHE SITE IS CURRENTLY UNDEVELOPED AND BEING USED FOR AGRICULTURE.OVERALL RUNOFF ANALYSIS (QUANTITY)THE DRAINAGE AREA TO BE DEVELOPED IS 3 ACRES, WHICH IS 0.049% OF THEUPSTREAM DRAINAGE AREA FOR RECEIVING STREAM, CLEAR BROOK RUN. SINCETHE DRAINAGE AREA FOR THE SITE TO BE DEVELOPED IS LESS THAN 1% OF THEUPSTREAM DRAINAGE AREA, NO STORMWATER MANAGEMENT FACILITIES AREPROPOSED FOR THIS DEVELOPMENT.QUALITY ANALYSIS1.33 POUNDS OF NUTRIENT CREDITS WILL BE PURCHASED FROM A QUALIFYINGSOURCE TO OFFSET THE STORMWATER QUALITY IMPACTS.DATE:SCALE:CHECKED BY:SHEET OFTAX PARCEL 44 A 97 STONEWALL MAGISTERIAL DISTRICT FREDERICK COUNTY, VIRGINIATS1323.0103 Heath Court Winchester, VA 22602 (540) 686-7373 fax (540) 301-1100TSAS SHOWNOctober 8, 2024PROJECT NUMBER:DRAWN BY:STOWE ENGINEERING, PLCTimothy S. Stowe10/14/24OVERALL DRAINAGE SHED FOR 1% RULE020004000The channel lining shall be CCX-Mat GeosyntheticCementitious Composite Mat by Concrete Canvas USA orapproved equal. The mat shall be installed in accordancewith the manufactures specifications.CHANNEL DATA AND COMPUTATIONS11