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12-11 Shenandoah Valley Ele. - Hayfield Substation - Back Creek - Backfile
DATE_? , RECEIVED FROM ADDRESS ❑ FOR RENT AMT. OF -- ACCOUNT CASH ANIT. PAID WL L CHECK BALANCE 7 MONEY DUE ORDER - 1) 17-) �, ,b'RLARS S �J( BY 1—s SITE PLAN TRACKING SHEET Comment Sheets: GIS Sanitation Authority Inspections Public Works Parks & Ree Health Dept. VDOT Winchester Stephens City Middletown Airport Fire L-- One copy of Site Plan application form L` Payment of site plan review fee One reproducible copy of Site Plan OPEN FILE: 7 /S File Opened i S / Reference Manual updated/number assigned D-base updated s t— Application Action Summary updated CLOSE FILE: Approved (or denied) letter mailed to applicant/copy to file and cc's File stamped "approved", "denied" or "withdrawn" a(v Reference Manual updated 6 D-base updated 44 pplication Action Summary updated S7sID#oZ7J C� • • Frederick County Virginia Engineering Manual For SVEC - Hayfield Substation Erosion Control & Drainage Calcs April 5, 2011 �,,ALTIJ OF Lr p ATFIAN W. U �L CKW L Y d Lic. No.04 075 110, / l glll xc r SrONAL Blackwell En2ineerina PLC �000-z 566 East Market Street Harrisonburg, VA 22801 Ph. (540) 432-9555 Fax (540) 434-7604 Blackwellengineering.com BE # 2200 4/5/2011 Table of Contents SVEC — Hayfield Substation Project 82200 Description Page CSC Narrative 01-09 Erosion & Sediment Control Bond Estimate 10 Runoff Calculations Existing 11-12 Proposed 13-14 Drainage Map Attached BE 2200 SVEC - Hayfield Substation 0 Erosion and Sediment Control Narrative Project Description The purpose of this project is to expand the existing substation on site, including the construction of a 192 square foot controls building. The site is located in Frederick County, Virginia on S. Hayfield Road. The Site is currently Used as a ShenaIldoah Valley Electric Cooperative substation. A total of 0.35 acres are to be disturbed during the project. Existing Site Conditions The portion of site being considered for construction is currently grass covered and existing gravel_ The site consists of low and generally flat terrain; the land slopes gently toward the northeast at approximately 24%. Adjacent Property One 1'liral residence with agricultural property SUITOUI1CIS the site t0 the south, west and north. S. Hayfield Road borders the site to the cast of the property. Offsite Area Any off -site area needed for borrow or spoils will utilize a site with an approved E&SC plan. SOILS (See Soil Map) (10) Craigsville cobbly sandy loam, 0 to 5 percent slopes, subject to flooding. Soil is very deep, nearly level to gently sloping and well dranlcCl. It is oil flood plains and first bottoms. Areas of the soil are commonly elongated and follow the course of the adjacent stream. Typically the surface layer of the Craigsville is dark brown cobbly sandy loam about 5 inches thick. The Subsoil extends 10 a ClCpth Of 32 Inches and is reddish brown very cobbly sandy loam. The Substratum is reddish brown extremely cobbly sandy loam and extends t0 a depth of 60 inches or more. K value for Craigsville soils is 0.17. 30B — Monongahela gravelly loam, 2 to 7 percent slopes. This soil is deep, gently sloping, and moderately well drained. Typically the surface layer is brown gravelly loans about 7 inches thick. The subsoil extends to a depth of about 43 Inches thick. Permeability in this soil is moderate above the fragipan and moderately slow or slow in the fragipan. It has low available water capacity and low shrink Swell potential. This soil is droughty during the growing season. The seasonal high water table, punicability in the fragipan, and depth to bedrock are the Innai n limitations to use of this soil for community development. The land -'� Blackwell l;ngineering, PLC �r 566 Gast Market St. 'Harrisonburg, VA 22801 BE 2200 SVEC - Hayfield Substation capability classification is Ilc. Erodibility index "K" factor is 0.37 for depths of 0-7 inches and 31-43 inches, and 0.43 for depths of 7-31 inches. Critical Erosion Areas Disturbed Slopes greater the 2:1 are to be matted or otherwise seeded to insure proper vegetation. hl'Opci- maintenance Of the Construction Entrance will ensure that sediment Is Ilot tracked onto the pavement and public roads by construction traffic. Erosion and Sediment Control Measures Unless otherwise indicated, all vegetative and StRICtUral cl'OSloll and sediment control practices shall be constructed and maintarllccl according to the I11111r111um standards and specifications of the Virginia Erosion and Sedilllcnt Control Regulations, latest edition. The minimum standards of the handbook shall be adhered to unIcSS otherwise waived or approved by a variance. Structural Practices 1. Temporary Construction Entrance — 3.02 n temporary constl'LICtloll entrance shall be Installed as shown On the plans. Dialing Illuddy conditions, drivers of construction vehicles shall be required to clean off their wheels before entering the highway. RLlnOff created during this procedure shall pass through an approved sediment removing process. 2. Construction Road Stabilization — 3.03 The temporary stabilization of access roads, subdivision roads, parking areas, and other on - site vehicle transportation routes Shall be 1111plcmentcd with stone immediately alter gracing 3. Silt Fence — 3.05 n temporary sediment barrier COIIStI'LICtcd Ol pOStS, filter fabric and, in some Cases, a wire support fence, shall be installed where shown on the plans to intercept and filter sediment and decrease flow velocities from drainage areas of limited size. 4. Diversion Dike — 3.09 To divert storm runoff front upSlopc drainage areas away front unprotected disturbed areas and slopes to a stabilized outlet. 5. Rock Check Dam — 3.20 Small temporary stone clams constructed across a swale or drainage ditch shall be constructed as shown on the plans. Blackwell Engineering, PLC 566 East Market St. li. . ;�I[arrisonburg, VA 22801 2 BE 2200 SVEC - Hayfield Substation mw- 6. Permanent Seeding Permanent seeding shall be applied to clenuded areas within seven clays after final grade is reached on any portion of the site 7. Other practices shall be provided if determined by the Engineer or County E&SC Admnistrator. Vegetative Practices 1. Top soiling (stockpile) Topsoil shall be stripped from the area to be graded and stockpiled for later use and shall be stabilized by seeding with seed mix appropriate for the time of year. 2. Permanent Seedi Permanent seeding shall be applied (appropriate to the time of year) to areas that have been brought to final gracle. 10 Management Strategies 1. Perimeter sediment trapping measures to be installed prior to any excavation on site. 2. Construction shall be conducted so that existing cover will not be CIIStUrbed anymore than necessary. 3. COI1StI'tiction shall be sequenced so that grading operations can begin and end as quickly as possible. 4. Permanent seeding and other stabilization shall follow immediately after grading. 5. Areas that will be disturbed shall be clearly marked by flags, signs, etc. 6. The job superintendent shall be responsible for the installation and maintenance of all erosion and sediment control practices. 7. After achieving adequate stabilization to the satisfaction of the E&SC Administrator, the temporary E&S controls shall be removed. Blackwell Engineering, PLC l!' , ��� 5Z East Market St. li.:. +Harrisonburg, VA 22801 3 BE 2200 SVEC - Hayfield Substation 0 Permanent Stabilization All areas disturbed by construction and not otherwise stabilized, shall be stabilized with permanent settling within 7 days following finish grading. Seeding shall be done according to standard & specification 3.32, PERMANENT SEEDING, of the handbook Seeding shall be applied depending on time of the year according to E&SC handbook specifications. In all seeding operations, seed, fertilizer, and lime shall be applied prior to mulching. Erosion control blankets shall be installed over fill slopes which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. Mulch (straw or fiber) shall be useCI on relatively flat areas. In all seeding operations, seed, fertilizer, and lime shall be applied prior to mulching. Storm Water Management/ Existing Downstream Channel The substation area (existing and proposed) of 0.60 acres consists of 0.50 acres of impervious area. Total proposed impervious area is 0.20 acres. The stormwater exits the site two ways. One way is into the VDOT ditch along S. I-IayCeld Road and the second is offsite to the north by way of sheet flow. The increase in flow from the INC Cievclopment to post development runoff to the VDOT ditch is minimal, only 0.3 and 0.5 cfs for the 10 and 100 year storms respectively. The increase in flow from the pre Cievclopment to post development runoff to the north property line by way of sheet flow is also minimal, only 0.2 and 0.3 cfs for the 10 and 100 year storms respectively. Due to [lie trivial increase in flow in both situations, no additional stormwater management controls are being provided for the substation expansion project. Disturbed area is less than one acre, therefore no water quality is proposed. Maintenance In general, all erosion and sediment control measures shall be eheckcd daily and after each significant rainfall. The following Items shall be Checked in partiCUlar: 1. The seeded area shall be clicelwd regularly to ensure that a good stand is maintained. Areas shall be fertilized and reseeded as needed. 2. The gravel Construction Entrance shall be maintained in a condition which will prevent tracking or flow oC mud onto public right-of-ways. Periodic top dressing with additional stone or the washing and reworking o1' existing stone shall be required when the Stone is covered or has been pushcCl into the soil. It shall be returned to Its original depth of 6" (min.). i`;Blackwell Engineering, PLC ° 566 East Market St. Afarrisonburg, VA 22801 4 BE 2200 SVEC - Hayfield Substation 3. The Silt Pence barrier if used shall be checked regularly for undermining of deterioration Of the fabric. Secliment shall be removed when the level of sediment deposition reaches half way to the top of the barrier. 4. The outlet protection shall be checked regularly for sediment buildup that will prevent drainage. If the stone is clogged by sediment, it shall be removed and cleaned or replaced. Riprap shall be inspected periodically to determine if high flows have causecl scour beneath the riprap Or filter fabric and dislodged any of the stone. Care must be taken to properly control sediment -laden Construction runoff, which may drain to the point of the new installation. 5. The 111ICt prOtCC6011 StRICtllrC Shall be Inspected after each rain and repairs made as heeded. Sediment shall be removed and the trap restored to its original dimensions when the sediment has accumulated to one half the clesign depth of the trap. 6. Maintenance of the Sediment Trap Shall include mowing and repair of the cletention trap berms, spillways, and grass areas; cleaning out sediment buildup; Clearing of debris and trash from the outlet pipe system. As well as the removing of sediment when it reaches the cleanout level. 7. The temporary diversion dike shall be inspected after every storm and repairs made if necessary. Once every two weeks whether a storm has occurred or not, the measure shall be inspected and repairs made if needed. Damagcs made by C011Strlleti011 traffic Or Other aCtlVlty must be repaired before the end of the working clay. 8. The Inlet and outlet protection filter system shall be checked regularly for secliment buildup which will prevent drainage. If the stone filter is clogged by secliment, it shall be removed and cleaned or replaeccl. Blackwell Engineering, PLC 566 Gast Market St. Harrisonburg, VA 22801 5 BE 2200 SVEC - Hayfield Substation 4VAC50-30-40. MINIMUM STANDARDS A11 erosion MCI sediment control program adopted by a CIIStrict or locality Illllst be consistent with the following criteria, techniques and methods: 1. Permanent or temporary soil stabilization shall be applied to Clerluded areas within seven clays after filial glade IS reached on any portion Of the site. Temporary soil stabilization shall be applied Within seven days t0 CICI1LIded areas that may not be at final grade bait Will remain clot rant for longer than 30 clays. Permanent Stabilization shall be applied t0 areas that are to be left dormant for more than One year. 2. During construction Of the project, soil stockpiles and borrow areas shall be stabilized or protected with sediment trapping mcaSl11'CS. The applicant IS responsible For the temporary protcetlon and permanent stabilization of all soil stockpiles on site as well as borrow areas and soil intentionally transported from the project site. 3. A permanent vegetative cover shall be established on denucled areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that is uniform, matlll'C C110Llgh t0 SUI'Vlve and will inhibit croSion. 4. Sediment basins and traps, perimeter cllkeS, sediment barriers and other meaSlll'CS intended t0 trap sediment shall be constructccl as a first step in any land-cllStUrbing activity and Shall be made Functional before Llpslope land disturbance takes place. 5. Stabilization mcaSLu'Cs shall be applied to earthen structures such as clams, dikes and diversions immediately after installation. 6. Sediment traps and sediment basins shall be designed alld COI1Stl'Llcted based llpoll the total drainage area to be served by the trap or basin. a. Tile Illilllllllllll storage capacity Of a sediment trap shall be 134 cubic yards per acre of drainage area and the trap shall only control drainage areas less than three acres. b. SLII'faeC l-Ul101f fl'otll dlStUl'bed areas that Is comprised Of flow from drainage areas greatcr than or equal t0 three acres shall be controlICCI by a sediment basin. The minimlllll storage capacity of a secliment basin shall be 134 cubic yards per acre of drainage area. The Outfall system shall, at a minimum, maintain the Stl'llctUral integrity of the basin d111-ing a 25-year storm of 24-11ou1- Cluration. RLllloff COCf11CICI1tS useCI in runoff calculations shall correspond t0 a bare earth conclition or those conclitions expected to exist while the sediment basin is Utilized. %. CLIt and fill slopes shall be CIcsignCd and constructed in a mat ncr that will minimize erosion. Slopes that are fOL111C1 t0 be eroding excessively within one year Of permanent stabilization shall be provided with additional slope stabilizing measures until the problem is corrected. 8. Concentrated runoff shall not flow down cut Or fill slopes unless ContaineCI within an adequate temporary or permanent channel, Manic or slope drain structure. `s" Blackwell Engineering, PLC {'Z-7',O 566 Gast Market St. H; Harrisonburg, VA 22801 BE 2200 SVEC - Hayfield Substation 9. Whenever water seeps Ii•om a slope face, adequate drainage or other protection shall be proviced. 10. All storm sewer inlets that are made operable during construction shall be protected so that secliment-laclen water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. 1 1 . Before Newly Co11Sll'LICLCd stormwater Conveyance channels of pipes are Illade operational, adequate outlet protection and any rcgllll'Cd temporary or permanent Channel lining shall be Installed in both the conveyance channel and receiving channel. 12. When work in a live watercoLlrsC is performed, precautions shall be taken to minimize encroachment, control sCdllllellt transport and stabilize the work area t0 the greatest extent possible during construction. Noncroclible material shall be used for the construction of causeways and cofferdams. Earthen fill may be used for these Structures if armored by noncrodlble covet' materials. 13. When a live watercourse must be crossed by construction vehicles more than twice in any six- month period, a temporary Vehicular stream crossing constructed of noncroclible material shall be provided. 14. All applicable federal, state and local regulations 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. Unclel•ground utility lines shall be installed in aceorclanee 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 sccliment trapping device, or both, and cllsCharaccl 111 a maI111C1' that does not adversely affect flowing streams or off -site property. cl. Material used Ibr backllllulg trenches Shall be properly compacted in ordcr to minimize erosion and promote stabilization. C. Restablllzatlon shall be accomplished in accordance with these l'egLllatlollS. F. Applicable safety regulations shall be complied with. 17. WIICI'C COIIStI'LICtIOII VCIIICIC 11CCCSS I.OLItCS intersect paved 01' J)Ubllc roads, provisions shall be macle to minimize the transport of sediment by vehicular tracking onto the paved surface. Where sCdllllellt Is transported onto a paved or public road surface, the road suI'facC shall be cicanecl thOl'OLlghly at the end OI each clay. ScclimcnL shall be removed fl•om the Toads by shoveling or Sweeping and transported to a sCdllllellt control disposal area. Strcct washing shall be allowed only r Blackwell Engineering, PLC �,"� S66 Gast Market St. �v= Y /)Harrisonburg, VA 22801 BE 2200 SVEC - Hayfield Substation after sediment is removed in this manner. This provision shall apply to illdivielual development lots as well as to larger lancl-clisturbing activities. 18. All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or alter the temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped sediment and the disturbed soil areas resulting front the disposition of temporary mcaSLIrCs shall be permanently Stabilind to prevent further erosion and sedimentation. 19. Properties and waterways downstream from devc1opment Sites Shall be protcctecl fi'0111 SCcliment deposition, CrOS1011 alld daillagC CILIC to increases Ill VOILIme, velocity and peak flow late Of stormwater runoff for the statccl fregUCllcy StOrIll of 24-I10LIl' ClUrat1011 Ill aCCOI-CfallCe with tile following standards and criteria: a. Concentrated stormwater runoff Icaving a dcvclopmcnt Site shall be discharged directly into an adequate natUrEll of man-made recciving channel, pipe or storm Sewer system. For those sites where runoff is discharged into a pipe or pipe system, downstream Stability analyses at the out('all 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 Orlc hundred limes greater than the contributing drainage area of the project in question; or (2) (a) NatUral channels shall be analyzed by the Use Of a two-year storm to verify that stormwater will not overtop channel banks nor cause erosion Of channel bed or banks. (b) All pi'CVIOUSly COI1StRIUCCI man-made channels shall be analyzed by the use of'a ten-year storm to verify that stormwater will not overtop its banks and by the use of a two-year storm to remonstrate that stormwater will not cause erosion of Channel bed of banks; and (c) Pipes and storm sewer systems shall be analyzed by the Use Of a tell -year storm to verify that stormwater will be contained Within the pipe or System. C. f f existing natural recciving channels or previously COIIStrLICteCI Illan-Illade C11an1CIS 01' pipes are not aelequalc, the applicant shall: (I ) Improve the channels t0 a con(lit1011 wlicre a ten-year storm will not overtop the banks and a two-year storm will not cause erosion to the channel bed or banks; or (2) hllprove the pipe or pipe system to a condition where the ten-year storm is Contained within the appurtenances; or (3) Develop a site design that will not cause the pre-clevelopment peak runoff rate front a two-year storm to increase When l'11110f l OLltfallS I11tO a IlatUral channel of will not CaUse the pre -development peak i'LIIIOff fate from a tell -year storm to increase When 1'llilOf f 011tf£IIIS into a man-made channcl; or (4) Provide a combination of channel improvement, stormwatcr Cletention or Othcr measures Which Is satisfactory t0 the plait -approving authority to prevent downstream d. 'file applicant Shall provide CVidcncc Of pci-mission t0 Make the improvements. Blackwell Engineering, PLC al 566 East Markct St. 1 :';11-larHS011hurg, VA 22801 BE 2200 SVEC - Hayfield Substation e. All hydrologic analyses shall be based on the existing watershed characteristics and the ultimate development of the subject project. f. If the applicant chooses all option that IIICIL1dCS StOl-IIINVatel' CICtCIIt1011, he shall obtain approval fl'011l the locality oI a plan Ior maintenance of tllc detention facilities. The plan Shall set forth the maintenance requirements of the Facility and the person responsible for performing the maintenance. g. outfall from a detention facility shall be discharged to a receiving channel, and energy dissipators shall be placed at the OLItIall of all detention I'acilities as necessary to provide a stabilized transition from the facility to the receiving channel. h. All on -site channels must be verified to be adequate. i. Increased volumes of sheet flows that may cause erosion or sedimentation On adjacent property Shall be diverted to a stable outlet, adequate channel, pipe or pipe system, or to a detention facility. j. In applying these stormwater management criteria, individual lots or parcels in a residential, commercial or industrial development shall not be considered to be separate development projects. Instead, the development, as a whole, shall be considered to be a single development project. Hydrologic parameters that reflect the ultimate development condition shall be used in all engineering calculations. k. All nlCasul'es used to protect pl'opertics 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. Blackwell Engineering, PLC S66 East Marl<eL SL. �+="'.Flarrisonburg, VA 228O1 SVEC - Hayfield Substation Erosion & Sediment Control Cost Estimate MIN. STD. Item Units Price Total 3.01 Safety Fence LF 4.00 - 3.02 Construction Entrance 1 Each 1,500.00 1,500.00 3.05 Reinforced Silt Fence 270 LF 5.00 1,350.00 3.07 Curb Inlet Protection Each 150.00 - 3.08 Culvert Inlet Protection Each 200.00 - 3.09 Diversion Berm 270 LF 5.00 1,350.00 3.10 Fill Diversion LF 2.00 - 3.12 Diversion LF 12.00 - 3.13 Sediment Trap - 1 acre Each 2,000.00 - Sediment Trap - 2 acre Each 2.500.00 - Sediment Trap - 3 acre Each 3,000.00 - 3.14 Sediment / Stormwater Basin Each 4.000.00 - 3.16 Paved Flume sq/yd 35.00 - 3.17 Stormwater Conveyance Channel Seeded sq/yd 10.00 - Sodded sq/yd 20.00 - Temporary Matting sq/yd 30.00 - Perminant Matting sq/yd 40.00 - Riprap sq/yd 60.00 - 3.18 Outlet Protection Riprap sq/yd 60.00 Grouted Riprap sq/yd 50.00 - Concrete sq/yd 40.00 - 3.20 Rock Check Dam 2 sq/yd 30.00 60.00 3.21 Level Spreader sq/yd 12.00 - 3.22 Temporary Seeding/Mulch acre 2,500.00 - 3.23 Perminant Seeding/Mulch 0.1 acre 3,000.00 300.00 Subtotal 4,560.00 25% Contingency 1,140.00 Total = 5,700.00 Blackwell Engineering, PLC Attn: Nathan Blackwell (540) 432-9555 2200-FREDERICK County-E&SC Bond Estimate.xls 10 File: 2200 TC CALCS.xis Printed: 4/512011 1.) Area = 3.45 2.) C = 0.36 unoff Calculations - Rational Method DA Existing #1 ac Project Name: SVEC - Hayfield Substation Project # : 2200 0.33 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 3.12 ac (@ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 4 ft. 2.0% VDOT Drainage Manual Appendix 6D-1: T, = 12.1 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: Tc = 0.0 min. L = 286 ft. Height = 10 ft. 3.5% Average velocity = 3.0 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: Tc = T, = L/60V Subtotal Tc = 1.6 min. 1.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. L = 342 ft. Height = 16 ft.(unpaved; 4.7% VDOT Drainage Manual Appendix 6D-5: T, = 2.4 min. Subtotal T, = 2.4 min. d. Total T,: Tc = 16.1 min. 4.) Rainfall Intensities: For T,= 16 min. 12 = 2.68 iph 125 = 4.25 iph 110 = 3.64 iph 1100 = 5.03 iph 5.) Proposed Flows: Q = ACI 02 = 3.3 cfs 025 = 5.2 cfs Q10 = 4.5 cfs Q100 = 6.2 cfs 1101 © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 File: 2200 TC CALCS.xls Printed: 4/512011 • • • Runoff Calculations - Rational Method DA Existing #2 1.) Area = 0.87 ac Project Name: SVEC - Hayfield Substation Project # : 2200 2.) C = 0.39 0.13 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 0.74 ac @ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 6 ft. 3.0% VDOT Drainage Manual Appendix 6D-1: Tc = 10.9 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: Tc = 0.0 min. L = 180 ft. Height = 16 ft. 8.9% Average velocity = 4.8 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: Tc = 0.6 min. T, = L/60V Subtotal T. = 0.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 0 ft. Height = 0 ft.(unpaved; VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. Subtotal T, = 0.0 min. d. Total T,: 4.) Rainfall Intensities: For T, = 12 5.) Proposed Flows: Tc = 11.5 min. min. 12 = 3.06 iph 110 = 4.14 iph Q=AC1 Q2 = 1.0 cfs Q 10 = 1.4 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 125 = 4.83 iph 1100 = 5.68 iph Q25 = 1.6 cfs Q100 = 1.9 cfs S File: 2200 TC CALCS.xls Printed: 4/512011 • 1.) Area = 2.) C = Runoff Calculations - Rational Method DA Proposed #1 3.44 ac Project Name: SVEC - Hayfield Substation Project # : 2200 0.39 0.49 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 2.95 ac (@. 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 4 ft. 2.0% VDOT Drainage Manual Appendix 6D-1: T, = 11.6 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: TC = 0.0 min. L = 250 ft. Height = 7 ft. 2.8% Average velocity = 2.7 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: Tc = 1.6 min. Tc = L/60V Subtotal T, = 1.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. L = 373 ft. Height = 18 ft.(unpaved; 4.8% VDOT Drainage Manual Appendix 6D-5: T, = 2.5 min. Subtotal T, = 2.5 min. d. Total Tc: T, = 15.7 min. 4.) Rainfall Intensities: For Tc= 16 min. IZ = 2.68 iph I25 = 4.25 iph 110 = 3.64 iph 1100 = 5.03 iph 5.) Proposed Flows: Q = ACI Q2 = 3.6 cfs Q25 = 5.6 cfs Q10 = 4.8 cfs Q100 = 6.7 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 13 File: 2200 TC CALCS.xls Printed: 4/5/2011 • Runoff Calculations - Rational Method DA Proposed #2 1.) Area = 0.88 ac Project Name: SVEC - Hayfield Substation Project # : 2200 2.) C = 0.42 0.17 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 0.71 ac @ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 6 ft. 3.0% VDOT Drainage Manual Appendix 6D-1: T, = 10.4 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: TC = 0.0 min. L = 180 ft. Height = 16 ft. 8.9% Average velocity = 4.8 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: T, = 0.6 min. T, = L/60V Subtotal Tc = 0.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 0 ft. Height = 0 ft.(unpaved; VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. Subtotal T, = 0.0 min. d. Total T,: Tc = 11.0 min. 4.) Rainfall Intensities: For T,= 11 min. 12 = 3.18 iph 125 = 5.01 iph 110 = 4.29 iph I100 = 5.89 iph 5.) Proposed Flows: Q = ACI Q2 = 1.2 cfs Q25 = 1.8 cfs Qio = 1.6 cfs Q100 = 2.2 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 14 rI Frederick County Virginia Engineering Manual For SVEC - Hayfield Substation Erosion Control & Drainage Calcs April 5, 2011 �v,ALTN Cfi Lf O p NATI-IAN W. U -L A CKWVIL 9 d ic. No.04 075 'Q� 4 s k1 S;ONA1, rA Blackwell EnLyineerina PLC ;> 566 East Market Street -�\ Harrisonburg, VA 22801 Ph. (540) 432-9555 Fax (540) 434-7604 Blackwellengineering.com BE # 2200 4/5/2011 Table of Contents SVEC — Hayfield Substation Project H2200 Description Page ESC Narrative 01-09 Erosion & Sediment Control Bond Estimate 10 Runoff Calculations Existing 1 1-12 Proposed 13-14 Drainage Map Attached • BE 2200 SVEC - Hayfield Substation Erosion and Sediment Control Narrative Project Description The purpose of this project is to expand the existing substation on site, including the construCtion Of a 192 square foot controls building. The site is located in Frederick County, Virginia on S. Hayfield Road. The site is currently Used as a Shenandoah Valley Electric Cooperative substation. A total of 0.35 acres are to be disturbed during the project. Existing Site Conditions The portion of site being considered for construction is currently grass covered and existing gravel. The site consists Of low and generally flat terrain; the land slopes gently toward the northeast at approximately 24%. Adjacent Property One rural residence with agricultural property SUrrotiriCls the site to the south, west and north. S. Hayfield Road borders the site to the east of the property. i Offs ite Area Any off -site area needed for borrow Or spoils will utilize a site with an approved E&SC plan. SOILS (See Soil Map) (10) Craigsville cobbly sandy loam, 0 to 5 percent slopes, subject to flooding. Soil is very deep, nearly level to gently sloping and well drained. It is on flood plains and first bottoms. Areas of the soil are commonly elongated and follow the course of the adjacent stream. Typically the surface layer of tllc Craigsville is Clark brown cobbly sandy loam abOUt 5 inches thick. The subsoil extends (o a depth of 32 inches and is reddish brown very cobbly sandy loam. The SUbstratUm is reddish brown extremely cobbly sandy loam and extends to a depth of 60 inches or more. K value for Craigsville soils is 0.17. 30B — Monongahela gravelly loam, 2 to 7 percent slopes. This soil is deep, gently sloping, and moderately well drained. Typically the surface layer is brown gravelly loam about 7 inches thick. The subsoil extends to a depth of about 43 inches thick. Permeability in this soil is moderate above the fraglpan and moderately Slow Or slow in the fraglpan. It has low available water capacity and low shrink swell potential. This soil is droughty during the growing season. The seasonal high water table, permeability in the fragipan, and depth to bedrock are the main limitations to use of this soil Ior community development. The land Blackwell Engineering, PLC rf �' 566 Gast Market St. '. llarrisonburg, VA 22801 BE 2200 SVEC - Hayfield Substation capability classification is IIc. l3rodibility index "K" factor is 0.37 for depths of 0-7 inches and 31-43 inches, and 0.43 for depths of 7-31 inches. Critical Erosion Areas Disturbed Slopes greater the 2:1 are to be matted or otherwise seeded to insure proper vegetation. Proper maintenance of the C011Sti'LICtion Entrance will ensuI'e that sediment IS not tracked onto the pavement and public roads by construction traffic. Erosion and Sediment Control Measures Unless otherwise inclicated, all vegetative and structural erosion and sediment control practices shall be constructed and maintained aCC01'Cling t0 the II1inin1L1111 standards and specifications of the Virginia Erosion and Sediment Control Regulations, latest edition. The rninliI urn Stanclards Of the handbook Shall be adhered to unless otherwise waived or approved by a variance. Structural Practices l . Temporary Construction Entrance — 3.02 A temporary COnSti'LICtiOn entrance shall be Installed as shown on the plans. During muddy conditions, drivers of construction vehicles shall be required to clean off their wheels before entering the highway. Runoff C1'Cated during this prOCedUre shall pass through an approved sediment removing process. 2. Construction Road Stabilization — 3.03 The temporary stabilization of access roads, subdivision Toads, parking areas, and other on - site vehicle transportation routes shall be implemented with stone immediately after grading 3. Silt Pence — 3.05 n temporary sediment barrier C01IStrUcted Of posts, filter fabric and, in some cases, a wire support fence, shall be installed where shown On the plans t0 intercept and filter sediment and decrease flow velocities from drainage areas of limited size. 4. Diversion Dike — 3.09 To ciivert storm runoff from upslopc drainage areas away f-0111 unprotected disturbed areas and slopes to a stabilized outlet. 5. Rock Check Dann — 3.20 Small temporary stone Banns constructed across a Swale or drainage Glitch shall be Constructed as shown on the plans. Blackwell Engineering, PLC �!'L- u. 566 East Market St. VA 22801 2 BE 2200 SVEC - Hayfield Substation 6. Permanent Seeding — 3.32 Permanent seeding shall be applied to clenudecl areas within seven clays after final grade is reached on any portion of the site 7. Other practices shall be provided if cletermined by the Engineer or County E&SC Administrator. Vegetative practices 1. Top soiling(stockpile) Topsoil shall be stripped from the area to be graded and stockpiled for later use and shall be stabilized by seeding with seed mix appropriate for the time of year. 2. Permanent Seeding Permanent seeding shall be applied (appropriate to the time of year) to areas that have been brought to final grade. 4) Management Strategies 1. Perimeter sediment trapping measures to be installed prior to any excavation on site. 2. Construction shall be ConcluCtecl so that existing cover will not be disturbed anymore than necessary. 3. COnStI'UCtiOII shall be SegIICIICCd SO that gracling operations Can begin and end as quickly as possible. 4. Permanent seeding and other stabilization shall follow immediately after grading. 5. Areas that will be disturbed shall be clearly marked by flags, signs, etc. 6. The job superintendent shall be responsible f-or the installation and maintenance of all erosion and sediment control practices. 7. After achieving adequate stabilization to the satisfaction of the E&SC Administrator, the temporary E&S controls shall be removed. Blackwell Engineering, PLC �•--`: 566 East Market St. Harrisonburg, VA 22801 9 BE 2200 SVEC — Hayfield Substation Permanent Stabilization All areas disturbed by Construction and not otherwise stabilized, shall be stabilized with permanent seeding within 7 clays following finish grading. Seeding shall be done according to standard & specification 3.32, PERMANENT SEEDING, of the handbook Seeding shall be applied depending on time of the year according to E&SC handbook specifications. I11 all seeding operations, seed, fertilizer, and lime shall be applied prior to mulching. Erosion control blankets shall be installed over fill slopes which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. Mulch (straw or fiber) shall be used on relatively flat areas. In all seeding operations, seed, fertilizer, and lime shall be applied prior to mulching. Storm Water Management/ Existing Downstream Channel The substation area (existing aIld proposed) of 0.60 acres consists of 0.50 acres of impervious area. Total proposed impervious area is 0.20 acres. The stormwater exits the site two ways. One way is into the VDOT ditch along S. Hayfield Road and the second is offsite to the north by way of sheet flow. The increase in flow from the pre development to post development runoff to the VDOT ditch is minimal, only 0.3 and 0.5 efs for the 10 and 100 year storms respectively. The increase in flow from the pre development to post development runoff to the north property line by way of sheet flow is also minimal, only 0.2 and 0.3 efs for the 10 and 100 year storms respectively. Due to the trivial increase in flow in both situations, no additional stornlwater management controls are being provided for the substation expansion project. Disturbed area is less than one acre, therefore no water quality is proposed. Maintenance In general, all erosion and sediment control measures shall be checked claily and after each significant rainfall. The following items shall be Checked ill partiCUlar: 1. The seeded area Shall be checked regularly to CrISllre that a good Stand is maintained. Areas shall be fertilized and reseeded as needed. 2. The gravel C011StRICtioll Entrance shall be maintainccl in a condition which will prevent tracking or flow of mucl onto public right-of'ways. Periodic top dressing with additional stone or the washing and reworking of existing stone Shall be required when the stone is covered or has been pushed into the soil. It shall be returned to its original depth of 6" (111in.). - , • Blackwell Engineering, PLC `---`566 Gast Marlccl St. la'''' ry;j[farrisonburg, VA 22801 4 BE 2200 SVEC - Hayfield Substation 3. The Silt Pence barrier if used shall be checked regularly for undermining of deterioration of the fabric. Sediment shall be removed when the level of sediment deposition reaches half way to the top of the barrier. 4. The outlet protection shall be checked regularly for sediment buildup that will prevent drainage. If the stone is clogged by sediment, it shall be removed and cleaned or replaced. Riprap shall be inspected periodically to determine if high flows have caused scour beneath the riprap or filter fabric and dislodged any of the stone. Care must be taken to properly control sediment -laden construction runoff, which may drain to the point of the new installation. 5. The inlet protection structure shall be inspected alter each rain and repairs made as needed. Sediment shall be removed and the trap restored to its original dimensions when the sediment has accumulated to one half the design depth of the trap. 6. Maintenance of the Sediment Trap shall include mowing and repair of the detention trap berms, spillways, and grass areas; cleaning oUt sediment builCIL11); clearing of debris and trash from the outlet pipe system. As well as the removing of sediment when it reaches the eleanout level. 7. The temporary diversion dike shall be inspected after every storm and repairs made if necessary. Once every two weeks whether a storm has occurred or not, the measure shall be inspected and repairs made if needed. Damages made by construction traffic or other activity 111Ust be repaired before the end of the working day. 8. The inlet and outlet protection filter system shall be checked regularly for sediment buildup which will prevent drainage. If the stone filter is clogged by sediment, it shall be removed and cleaned or replaced. Blackwell Engineering, PLC S66 Gast Market St. ,I .311arrisonburg, VA 22801 5 BE 2200 SVEC - Hayfield Substation 4VAC50-30-40. MINIMUM STANDARDS An erosion and sediment control program adopted by a clistrict or locality must be consistent with the following criteria, techniques and methods: 1. Permanent or temporary soil stabilization shall be applied to clenuded areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven clays to denudeCI areas that may not be at final grade but will remain dormant for longer than 30 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year. 2. DLII'Illg COI1St1'LICtiOII of the project, soil stockpiles 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 areas and soil intentionally transported from the project site. 3. A permanent vegetative cover shall be established on denucled areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established Lentil a grounCI 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 a first step in any land -disturbing activity and shall be made functional before upSlOpC land disturbance takes place. 5. Stabilization measures shall be applied to earthen Stl'uctures such as clams, dikes and diversions immediately after installation. 6. Sediment traps and sediment basins shall be clesigned and construetccl based upon the total drainage area to be served by the trap or basin. a. The minimum Storage capacity Of a sediment trap shall be 134 cubic yards per acre of drainage area and the trap Shall only Control drainage areas less than three acres. b. Surface runoff fi'0111 distul'becl areas that IS comprised Of now from drainage areas greatel' than of cgUal t0 three acres Shall be controlled by a sediment basin. The I111111111L1111 storage capacity ol'a sediment basin Shall be 134 cubic yards per acre of drainage area. The outfall system Shall, at a Illllllllllllll, maintain the StRICtUral integrity Of the basin Cll ring a 25-year storm of 24-11OL11' ClUration. RLIIIOfI COC1fiCICIIIS Used In 1 unoff CalClllationS Shall correspond t0 a bare earth eonclition or those conclitions expected to exist while the sediment basin is Utilized. %. CLIt a1ICI fill slopes Shall be designed ailed COI1St1'UCLCCI in a manner that will I11111imiz_e erosion. Slopes that arc fo1111C1 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 runoff'shall 110t flow clown cut of fill slopes unless contained within an adequate temporary or permanent channel, ALIIIIC or slope drain structure. Blackwell Engineering, PLC 566 Gast Markel St. .?I-larrisonburg, VA 22801 BE 2200 SVEC — Hayfield Substation 9. Whenever water seeps from a slope face, acicquate drainage Or other protection shall be provided. l0. 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. Before newly constructed stormwater conveyance channels or pipes 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. When work ill a live watercourse IS perrormed, prccalltlollS shall be taken t0 minimize encroachment, control sediment transport and stabilize the work area t0 the greatest extent possible during construction. Noneroclible material shall be used for the construction of causeways and cofferdams. Earthen till 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 vehicular stream crossing constructed of nonerodible material shall be provided. 14. All applicable federal, state and local I-CgUlations pertaining t0 working Ill 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 ill addition to other applicable criteria: a. No more than 500 linear Iect of trench may be opened at one time. b. Excavated material shall be placed on the uphill side Of trenches. C. Effluent from dcwatering operations shall be filtered or passed through an approved sediment trapping device, Or both, and discharged Ill a manner that does not adversely affect flowing streams or off -site properly. d. Material used flor backlilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e. Restabllizatlon shall be accomplished Ill accordance with these regulations. f. Applicable safety regUlationS shall be complied with. 17. Where construction vehicle access routes intellect paved Or public roads, provisions shall be made to minimize the transport of seciment by vehicular tracking onto the paved surface. Where sediment is transported onto a paved or public road sur(,lce, the road surface shall be cleaned thor011ghly at the cite Of each day. sediment Shall be removed f-om the roads by shoveling Or sweeping and transported to a sediment control disposal area. street washing shall be allowed only Blackwell Engineering, PLC 566 East Markel St. `r Harrisonburg, VA 22801 BE 2200 SVEC - Hayfield Substation after sediment Is removed ill this manner. This provision shall apply to individual development lots as well as to larger land -disturbing activities. 18. All temporary erosion and sediment control measures shall be removed within 30 clays after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped seciment and the disturbed soil areas 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 clue to increases in volume, velocity and peals flow rate of stormwater ru1101Tfor the stated frequency storm of'24-hour duration in accordance with the following standards and criteria: a. Concentrated stormwater runoff leaving a development site shall be discharged directly into all adegLlatc natUral or man-made receiving channel, pipe or storm sewer system. For those sites where runoff is discharged into a pipe or pipe system, downstream stability analyses at the outfall of the pipe or pipe system shall be performed. b. Aclequacy 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 limes greater than the contributing drainage area of the project Ill gLICStI011; or (2) (a) Natural channels shall be analyzed by the use of a two-year storm to verify that stormwater will not overtop channel banks nor cause erosion of channel bed or banks. (b) All previously constructed man-made channels shall be analyzed by the use of a ten-year storm to verify that stormwater will not overtop its banks and by the use of a two-year storm to demonstrate that stormwater will not cause erosion of channel bed or banks; and (c) Pipes and storm sewer systems shall be analyzed by the use of a ten-year storm to verify that stormwater will be contained within the pipe or system. C. If CXlStlllg Ilatlll'aI I'CCCIVillg CIMI111CIS Or I)I'CVIOLISly C011Stl'LlCted man-made channels of pipes are not adequate, the applicant shall: (I) Improve the channels t0 a condition where a ten-year storm will not overtop the banks and a two-year storm will not CaLISC CI'OSI011 to the channel bed or banks; or (2) Improve the pipe or pipe system t0 a condition where the tell -year storm IS contained Within the 11)1)Lll*tClIalICCS; Or (3) Develop a site clesign that will not cause the pre -development peak runoff rate from a two-year storm to increase Whell rLlllOff OLltfallS into a llatUral channel or Will [lot CaLISC the ])I'C-CICVCI01)I1lCllt I)e�llc I'LlllOff fate From a ten-yCai' storm to increase Whell I'LlilOff OLltfallS illtO a 111a11-I11aCIC ChailllCl; Or (4) Provide a combination of Channel improvement, stormwatcr detention of other measures which Is Satisfactory t0 the plan -approving al1t1101'ity to prevent downstream crosloll. cl. The applicant shall provide CVICICIlcc Of pCl'I1lissioll to make the improvements. Blackwell Engineering, I'LC 566 East Market St. 1"'1%I-JalTiSO1lbLll'g, VA 22801 BE 2200 SVEC - Hayfield Substation e. All hydrologic analyses shall be based on the existing watershed characteristics and the Ultimate development of the subject project. C If the applicant chooses an option that inCIUCICS stormwater detention, Ile shall obtain approval From the locality of a plan For maintenance of the detention facilities. The plan shall set forth the maintenance requirements of the Facility and the person responsible for performing the maintenance. g. Outf'all from a detention facility shall be discharged to a receiving channel, and energy dissipators shall be placed at the oulfall of all detention facilities as necessary to provide a stabilized transition fi•om 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 properly shall be diverted to a stable outlet, adequate channel, pipe or pipe system, or to a detention facility. J. In applying these stormwater management criteria, individual lots or parcels in a residential, commercial or industrial development shall not be considered to be separate development projects. Instead, the development, as a whole, shall be considered to be a single development project. I-fydrologic parameters that reflect the ultimate development condition shall be used in all engineering Calculations. Ic. 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. Blackwell Engineering, PLC 566 East Market St. i _.,_.)Flarrisonburg, VA 22801 SVEC - Hayfield Substation Erosion & Sediment Control Cost Estimate MIN. STD. Item Units Price Total 3.01 Safety Fence LF 4.00 - 3.02 Construction Entrance 1 Each 1.500.00 1,500.00 3.05 Reinforced Silt Fence 270 LF 5.00 1,350.00 3.07 Curb Inlet Protection Each 150.00 - 3.08 Culvert Inlet Protection Each 200.00 - 3.09 Diversion Berm 270 LF 5.00 1.350.00 3.10 Fill Diversion LF 2.00 - 3.12 Diversion LF 12.00 - 3.13 Sediment Trap - 1 acre Each 2.000.00 - Sediment Trap - 2 acre Each 2,500.00 - Sediment Trap - 3 acre Each 3.000.00 - 3.14 Sediment / Stormwater Basin Each 4,000.00 - 3.16 Paved Flume sq/yd 35.00 - 3.17 Stormwater Conveyance Channel Seeded sq/yd 10.00 - Sodded sq/yd 20.00 - Temporary Matting sq/yd 30.00 - Perminant Matting sq/yd 40.00 - Riprap sq/yd 60.00 - 3.18 Outlet Protection Riprap sq/yd 60.00 Grouted Riprap sq/yd 50.00 - Concrete sq/yd 40.00 - 3.20 Rock Check Dam 2 sq/yd 30.00 60.00 3.21 Level Spreader sq/yd 12.00 - 3.22 Temporary Seeding/Mulch acre 2,500.00 - 3.23 Perminant Seeding/Mulch 0.1 acre 3.000.00 300.00 Subtotal 4,560.00 25% Contingency 1,140.00 Total = 5,700.00 Blackwell Engineering, PLC Attn: Nathan Blackwell (540)432-9555 2200-FREDERICK County-E&SC Bond Estimate.xls 10 File: 2200 TC CALCS.xls Printed: 4/5/2011 Runoff Calculations - Rational Method DA Existing #1 1.) Area = 3.45 ac Project Name: SVEC - Hayfield Substation Project # : 2200 2.) C = 0.36 0.33 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 3.12 ac @ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 4 ft. 2.0% VDOT Drainage Manual Appendix 6D-1: Tc = 12.1 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: TC = 0.0 min. L = 286 ft. Height = 10 ft. 3.5% Average velocity = 3.0 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: Tc = 1.6 min. T, = L/60V Subtotal T, = 1.6 min. c. Channel: L = 0 ft. Height = 0 ft. (paved) VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. L = 342 ft. Height = 16 ft.(unpaved; 4.7% VDOT Drainage Manual Appendix 6D-5: Tc = 2.4 min. Subtotal Tc = 2.4 min. d. Total T,: T, = 16.1 min. 4.) Rainfall Intensities: For TC = 16 min. 12 = 2.68 iph 125 = 4.25 iph 110 = 3.64 iph 1100 = 5.03 iph 5.) Proposed Flows: Q = ACI Q2 = 3.3 cfs Q25 = 5.2 cfs Q10 = 4.5 cfs Q100 = 6.2 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 File: 2200 TC CALCS.xIs Printed: 4/5/2011 E J 1.) Area = 2.) C = Runoff Calculations - Rational Method DA Existing #2 0.87 ac Project Name: SVEC - Hayfield Substation Project #/ : 2200 0.39 0.13 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 0.74 ac (a) 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 6 ft. 3.0% VDOT Drainage Manual Appendix 6D-1: Tc = 10.9 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: Tc = 0.0 min. L = 180 ft. Height = 16 ft. 8.9% Average velocity = 4.8 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: TC = 0.6 min. Tr = L/60V Subtotal Tc = 0.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 0 ft. Height = 0 ft.(unpaved; VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. Subtotal Tr = 0.0 min. d. Total T,: Tr = 11.5 min. 4.) Rainfall Intensities: For T, = 12 min. 12 = 3.06 iph 125 = 4.83 iph I10 = 4.14 iph 1100 = 5.68 iph 5.) Proposed Flows: Q = ACI Q2 = 1.0 cfs Q25 = 1.6 cfs Q10 = 1.4 cfs Q100 = 1.9 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 12 File: 2200 TC CALCS.xis Printed: 4/5/2011 Runoff Calculations - Rational Method DA Proposed #1 1.) Area = 3.44 ac Project Name: SVEC - Hayfield Substation Project # : 2200 2.) C = 0.39 0.49 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 2.95 ac @ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 4 ft. 2.0% VDOT Drainage Manual Appendix 6D-1: Tc = 11.6 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: T, = 0.0 min. L = 250 ft. Height = 7 ft. 2.8% Average velocity = 2.7 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: Tc = 1.6 min. T, = L/60V Subtotal TC = 1.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 373 ft. Height = 18 ft.(unpaved; 4.8% VDOT Drainage Manual Appendix 6D-5: Tc = 2.5 min. Subtotal T, = 2.5 min. d. Total T,: Tc = 15.7 min. 4.) Rainfall Intensities: For Tc= 16 min. 12 = 2.68 iph 125 = 4.25 iph 110 = 3.64 iph 1100 = 5.03 iph 5.) Proposed Flows: Q = ACI Q2 = 3.6 cfs Q25 = 5.6 cfs Q10 = 4.8 cfs Q t00 = 6.7 cfs M© 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 13 File: 2200 TC CALCS.xls Printed: 4/5/2011 1.) Area = Runoff Calculations - Rational Method DA Proposed #2 0.88 ac Project Name: SVEC - Hayfield Substation Project # : 2200 2.) C = 0.42 0.17 ac @ 0.90 Impervious 0.00 ac @ 0.45 Cultivated Rows 0.71 ac @ 0.30 Pasture/Grass 3.) Time of Concentration Slope a. Overland: (200' max) L = 200 ft. Height = 6 ft. 3.0% VDOT Drainage Manual Appendix 6D-1: Tc = 10.4 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: T,: = 0.0 min. L = 180 ft. Height = 16 ft. 8.9% Average velocity = 4.8 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: T, = 0.6 min. T, = L/60V Subtotal T, = 0.6 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. L = 0 ft. Height = 0 ft.(unpaved; VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. Subtotal TC = 0.0 min. d. Total T,: T, = 11.0 min. 4.) Rainfall Intensities: For Tc= 11 min. 12 = 3.18 iph 125 = 5.01 iph 11e = 4.29 iph 1100 = 5.89 iph 5.) Proposed Flows: Q = ACI Q2 = 1.2 cfs 025 = 1.8 cfs Q 10 = 1.6 cfs Q100 = 2.2 cfs © 2005 Jonathan Brumfield, T. Basil Finnegan, Aaron Showalter Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 14 p COUNTY of FREDERICK Department of Planning and Development 540/665-5651 FAX: 540/ 665-6395 May 25, 2011 Mr. Ethan Boyle Blackwell Engineering, PLC 566 E. Market Street Harrisonburg, Virginia 22801 RE: Approval of Site Plan #12-11; SVEC — Hayfield Substation Property Identification Number (PIN): 39-A-40A Dear Mr. Boyle: The above -referenced site plan was approved on May 25, 2011. The site plan is approved for the expansion of the existing SVEC — Hayfield Substation located on South Hayfield Road in the Back Creek Magisterial District. All requirements of the Frederick County Zoning Ordinance have been met in the approved site plan, including review agency comments from all relevant review agencies. I am providing you with three (3) copies of the approved site plan. Please forward these copies to the appropriate representative(s). Furthermore, advise the owner(s) that a copy should be kept for future reference, and an approved copy must be kept on the construction site throughout the development process. Once site development is complete, the owner(s) should contact this office to schedule an on -site inspection. Do not hesitate to contact me if you have any questions or concerns. Sincerely, 4 l (,� � e k4— _ ,6'/t=_ Candice E. Perkins, AICP Senior Planner Attachments CEP/bad cc: Jane Anderson, Real Estate Gary Lofton, Back Creek District Supervisor Greg Unger and Kevin Crosen, Back Creek District Planning Commissioners Shenandoah Valley Electric Cooperative, 147 Dinkle Avenue, Mt. Crawford, VA 22841 107 North Kent Street, Suite 202 - Winchester, Virginia 22601-5000 0 2. 91 SITE PLAN APPLICATION - Q/flee Use Only- Date Application Received: Application #: JJ �� ,may C Fees Received: 4) M Receipt #: v lJ Initials: Project Title: SVEC - Hayfield Substation Location of Property West side of S. Hayfield Road, between Northwestern Pike (Street address) and Flint Ridge Lane Applicant/Designer: Name: Blackwell Engineering, PLC Address: 566 E. Market Street Harrisonburg, VA 22801 4. Property Owner (if different than above): Name: Shenandoah Valley Electric Cooperative Address: 147 Dinkle Avenue Mt. Crawford, VA 22841 5. Property Information: a. Properly Identification Number: b. Total acreage of the parcel to be developed: C. Total disturbed area of the parcel: d. Present Use: C. Proposed Use: f. Magisterial District(s) EN Telephone: 540.432.9555 Telephone: 540.574.7228 79 A QUA 1.166 ac 0.35 ac Substation Substation Back Creek 0 6. Site Plan Type: Yes No a. Is this an original or new site plan? _Q _a b. Is this a revised site plan? Yes No _LJ— If yes provide all previous site plan numbers: Yes No R1 C. Is this a minor site plan? If yes provide all previous site plan 1111I11bus: 7. Zoning Information: a. Current "Zoning: RA b. Was this property Rezoned? Yes No C. If yes provide the rezoning number for this property: Yes No d. Are there any proffers for this property? C. Has a MDP been approved for this property? Yes _Q No _I V l f. If yes provide the MDP number for this property: 8. Adjoining property Zoning and use: USE North Undeveloped East Undeveloped SOLIth Undeveloped West Undeveloped ZONING RA RA RA RA I have read the material included in this package and Understand what is required by the Frederick County Planning Department. I also Understand that all required material will be complete prior to the submission of my site plan. Signature: 9�4- fi�� Date: D`i/dS /11 9 Special Limited Power of Attorney County of Frederick, Virginia Frederick Planning Website: www.co.frederick.va.us Department of Planning & Development, County of Frederick, Virginia 107 North Kent Street, Winchester, Virginia 22601 Phone (540) 665-5651 Facsimile (540) 665-6395 Know All Men By These Presents: That I (We) (Name) Shenandoah Valley Electric Cooperative (Phone) 540-574-7228 (Address) 147 Dinkle Avenue Mt. Crawford, VA 22841 the owner(s) of all those tracts or parcels of land ("Property") conveyed to me (us), by deed recorded in the Clerk's Office of the Circuit Court of the County of Frederick, Virginia, by Instrument No. 100005014 on Page 1838 , and is described as Parcel: 39 Lot: 40A Block: Section do hereby make, constitute and appoint: (Name) Blackwell Engineering, PLC Subdivision: TM# 39-A40A (Phone) 540-432-9555 (Address) 566 E. Market Street Harrisonburg, VA 22801 To act as my true and lawful attorney -in -fact for and in my (our) name, place and stead with full power and authority I (we) would have if acting personally to file planning applications for my (our) above described Property, including: Rezoning (including proffers) Conditional Use Permit Master Development Plan (Preliminary and Final) _Subdivision _Site Plan _Variance or Appeal My attorney -in -fact shall have the authority to offer proffered conditions and to make amendments to previously approved proffered conditions except as follows: This authorization shall expire one year from the day it is signed, or until it is otherwise rescinded or modified. In witness thereof, I (we) have hereto set my (our) hand and seal this IZ'day of 14 2,-,, 20—LL, Signature(s) State of Virginia, City/Countyof oCCll'l!t KotvyL To -wit: I, Ul VIAN 10 ail t. ,__ a Notary Public in and for the jurisdiction aforesaid, certify that the person(s) who signed to the foregoing instrument personally appeared before me and has acknowledged the same before me in the jurisdiction aforesaid this 1 3'`'day of L, 20�. n T L%5jpn Expires: I ) - 3 1- ;) l)12 Notary Public v W-r1/AtL l,ny PULLIC C mmonwe3lth of Virginia MV , )iqt :..?n r:*T!c 2 )l 0 0 REQUEST FOR SITE PLAN COMMENTS Frederick County Department of Planning & Development Mail to: Frederick County Department of Planning & Development 107 North Kent Strect, Winchester, Virginia 22601 Phone: (540) 665-5651 Hand deliver to: Frederick County Departlllcnt of Planning & Developincllt 107 North Kent Street, 2"`t Floor Winchester, Virginia 22601 Applicant: It is your responsibility to complete this form as accurately as possible in order to assist the agency with their review. Please attach two (2) copies orthe Site Plan with this sheet. ApplicaIlt's Nalllc: Ethan Boyle Telephone: 540.432.9555 Mailing Address: 566 E. Markel Street Harrisonburg, VA 22801 Name of development and/or description of the request: SVEC - Hayfield Substation Location of Property: West side of S. Hayfield Road, between Northwestern Pike and Flint Ridge Lane Department of'Planning & Devclopment Comments: Date Received _ Date Reviewed _ Revision Required Signature & Date: -PLANNING DEPARTMENT USE ONLY - Review Number l 2 3 4 5 (circle one) Date Approved Please Rettu•n Fora► to Applicant" - --------- - -- - - -- - -- ------ _ --- -- 16 • 0 BK 7 8 5 i' � 18 4 3 D.B. Z2G , PG. 190 ZONED: KA Ur,6 , AGO. moNUMENT N 3'Z- 30' 00" E - ZOO. 00' —� MONUMENT 5ET IN GONG• �iET IN GONG. 50'1�tZ. L. w s 0. SO& AO�E ; ID O 0 li d rn m � D o �' i N r rn C,4 � a ;•~'` °� � 3 I o to S 32' 30, 00 " W - 115. 00' .,b IN ,. p OIZIGINAL FmogTHUiw OT LINE ZN - to p �p Z PoweK C w V. • Z15 IRGINIA PG. 105. o Cn0'6.R.L. I ml ORIGINAL LOT LINE rs I/NORTHERN VIRGINIA POWER 85. 07, S ►iONUMENT 5ET N GONG. DCOMPANY 0. 105, PG . 147 537.oG' -- A= GI. Co3' =535-p%'43 TO U.6. ire. 5IZ ivy C /UGH VA. IZOU T L VJ00 GI.G3' Aid EA TABULATION PERRY POTOMAC, E12150H Z%5• BOO AG. + 0.8°OG AG. - 0. B°)G AG. O.OI I AC. 4 0.1%l) AG. Z%4-. °004 AG. ± t. IGG AG. PLAT OF GOMI3INATI0N OF THE LAND OF POTOMAG EV150R GOMPA" BACK CREEK 17*TRICT- FKEDERICK COUNTY, VIRGINIA REEN WAY INC. 11048r Lane , W,ncheslcr, Virginia 22E0� ' 703-662-41B5 H. Bruce Edens,L.S.•Presidenl PRESIDENTIAL-�� URVYING —DESIGNING — PLANNING GRICULTURAL• COMMERCIAL• INDUSTRIAL- CONSTRUCTION m No. 04 t 62-B SHEET Z of 3 I _ i REQUEST FOR SITE PLAN COMMENTS Virginia Department of Transportation Mail to: Virginia Department of Transportation Attn: Resident Engineer 14031 Old Valley Pike Edinburg, Virginia 22824 Phone: (540) 984-5600 Hand deliver to: Virginia Department of']Transportation Attn: Resident Engineer 2275 \orthwestern Pike Winchester, Virginia 22603 Applicant: Please fill out the information as accurately as possible in order to assist the Virginia Department of .: Transportation with their.reyiew. Please attach five (5) copies of the site plan NNith traffic generation data and drainage .'c�laulattons;withthis �hcet: i' -�.. :;• ;, Applicant's Name: Ethan Boyle Mailing Address: 566 E, Market Street Harrisonburg, VA 22801, Name of development and/or description of the request: SVE-C - Hayfield Substation Location of Property: West side of S. Hayfield Road, betyreen Northwestern Piko and Flint Ridge Lane 'rel ephone: 540.432.9555 � W&%� 1PSY5t�i't�?%Af pT1 Ski qtf} t� g a � sars to have little measurable impact on Route 600, the SOT--facilit !4;h-Nould-provide--access--ta-the-property,--P-r-esent entrance-is-adegi4at4-for-proposed-- _improvements—Should-busine_ss-ev x expandin the flt___turP entrance n ay �hP tipgrarlPri_ Thank you for allowing us the opportunity to comment. -VDOT USE ONLY - Date Received Review Number 1 2 3 4 5 (circle one) Date Reviewed Revision Required, Date Approved ! f VDOT Signature &;Date: T'lease*etii► q`l or'nt to Applicant'" 15 I e • • REQUEST FOR SITE PLAN COMMENTS Frederick County Inspections ADepartment Comment Mail to: Hand deliver to: Frederick County Inspections Department Frederick County Inspections Dept. Attn: Building Official 107 North Kent Street, 2"d Floor 107 North Kent Street, Winchester, Virginia 22601 Winchester, Virginia 22601 Phone: (540) 665-5650 Applicant: It is your responsibility to complete this form as accurately as possible in order to assist the agency with their review. Please attach two_(2lcoaies of the Site Plan with this sheet..,w,y:, Applicant's Name: Ethan Boyle Mailing Address: 566 E Markel Street Harrisonburg, VA 22801 Name of development and/or description of the request: SVEC - Hayfield Substation Location of Property: West side of S Hayfield Road, between Northwestern Pike and Flint Ridge Lane Inspections Department Comments: Date Received Date Reviewed Revision Required Signature & Date: Telephone: 540.432 9556 -FREDERICK COUNTY INSPECTIONS DEPARTMENT USE OI Review Number 1 2 3 4 5 (circle one) Appro ved zS �eS / S� / I Form to Applicant" Buildings shall comply with The Virginia Uniform Statewide Building Code and Sections 306, Use Group F (Factory and Industrial), Section 307 Use Group H (High Hazard), and Section 312, use group U (Utility and Miscellaneous) of the International Building Code/2009. Other Code that applies is ICC/ANSI A117.1-03 Accessible and Usable Buildings and Facilities. Design Professional licensed in VA shall seal the structural plans submitted for permit application and special inspection requirements of Chapter 17 of IBC shall apply to this type of structure. (soil, concrete, steel etc.) Fencing greater than 6' in height requires a building permit • '-�, ,b " ; ti`i. ,.,- ".•y,.. ,:;�'. ^fie. t,?�. �•;tc,�',:;�,: - • E Mr. Ethan Boyle Blackwell Engineering, PLC 566 East Market Street Harrisonburg, Virginia 22801 RE: SVEC Hayfield Substation Site Plan Comments Frederick County, Virginia Dear Mr. Boyle: May 23, 2011 COUNTY of )F'REDERICK Department of Public Works 540/ 665-5643 FAX: 540/ 678-0682 We have completed our review of the subject site plan and offer the following comments: 1. Because SVEC does not have an annual erosion and sediment control plan on file with the Virginia Department of Conservation and Recreation (DCR), it will be necessary to obtain a land disturbance permit from the Frederick County Public Works Department. We offer no additional comments; therefore, we recommend approval of the subject site plan. Sincerely, Joe C. Wilder Deputy Director of Public Works JCW/rls cc: Planning and Development fi le T:\Rhonda\'1 E%IPCOMME\ I TIF.LDSI BSI A 11ONSPCONI.doc From:fred co fire • To:915404347604P0277116 012/2011 07 36 RE UEST FOR SITE PLAN COMMEN TS NTS Frederick County Fire Marshal Comment Mail to: Frederick County Fire Marshal Attn: Fire Marshal 1800 Coverstone Drive Winchester, Virginia 22602 Hand deliver to: Public Safety Building 1800 Coverstonc Drive Winchester, Virginia 22602 Phone: (540) 665-6350 #732 P.002/002 j Applicant: It is your responsibility to complete this form as accurately as possible in order to assist the agency wish r:xir i ccw. -Pea;e t;,uh-twp �2,ies qf_t a Sits Plarj wi-th, ni, � ,Cct Applicant's Name: Ethan Boyle Mailing Address 566 E. Market Street __ Harrisonburg. VA 22801 Name of development and/or description of the request: SVEC - Hayfeld Substation Location of Property: West side of S. Hayfield Road, between Northweslem Pike and Flint Ridgo Lane Fire Marshal Comments: Telephone: 540.432 9555 o 3—n—TL APR 15 2011 -FREDERICK COUNTY FIRE. MARSHAL USE ONLY - Date Received 7 851�611 Review Number 1 2 3 4 5 (circle one) Date Reviewed VA-12o1I Revision Required Date Approved 57 i .b. i I Signature & Date' - P . * 1'IemrRcturlrTbrrn,toApplicant** fw+' f + f''•�i .�".. r+ _`� ��.. From:fred co fire 0 To:915404347604P0277116 0212011 07:36 #732 P.0011002 Frederick County Fire and Rescue Department Office of the Fire Marshal Plan Review and Comments jt6ID1'.1iA; Control number Date received Dale reviewed Date Revised SP11-001 t 4115/2011 5/11/2011 Project Name Applicant SVEC Hayfield Substation Blackwell Engineering PLC. Address City Slate Zip Applicant Phone 566 E. Market St. Harrisonburg VA 22801 540-432-9555 Type Application Tax ID Number Fire District Rescue District Stie Plan 39-A-10A 16 16 Current Zoning RA Recommendations Automatic Sprinkler System Automatic Fire Alarm System No Yes Other recommendation Emergency Vehicle Access Adequate Siamese Location Not Identified Emergency Vehicle Access Comments Access Comments Additional Comments Plans Approved As SubrniHed Requirements Hydrant Location Not Identified Roadway/Aisleway Width Not Identified Election District Back Creek Residential Sprinkler System No Fire Lane Required No Special Hazards No Plan Approval Recommended Reviewed By Signature Yes S. Mark Showers Title I i 5 � BLACKWELL2 �011� ENGINEERING, PLC 566 E. Market St., Harrisonburg, VA 22801 540-432-9555 540-434-7604(FAX) ri I l To: Candice Perkins From: Ethan Boyle Frederick County, Department of Planning & Development Company: Frederick County Date: May 24, 2011 Address: 107 North Kent Street, Winchester, Virginia 22601 Job Name: SVEC — Hayfield Substation X Plans ❑ Specs ❑ Report ❑ Letter ❑ Shops ❑ Article Pages: See below Job Number. ❑ Proposal X Other Items: 1. 5 full sets of drawings dated: 05/24/11 2. Approved Request for Site Plan Comments forms 3. 4. 5. For Your. X Approval ❑ Use ❑ Information ❑ Signature ❑ Review ❑ Per your request Comments: ❑ Distribution Sent Via: X US Mail 0 Delivery ❑ Overnight ❑ Other • � B fla copy COUNTY of FREDERICK Department of Planning and Development 540/665-5651 FAX:540/665-6395 May 2, 2011 Mr. Ethan Boyle Blackwell Engineering, PLC 566 E. Market Street Harrisonburg, Virginia 22801 Re: Review Comments for Site Plan #12-11; SVEC — Hayfield Substation Property Identification Number (PIN): 39-A-40A Dear Mr. Boyle: Planning Staff has reviewed the above -referenced site plan to determine if administrative approval can be granted. At this time, administrative approval cannot be granted. This site plan is denied until the issues in this letter, as well as all issues of the other review agencies, have been adequately addressed. Please review Staffs comments listed below and then prepare a revised site plan which adequately addresses each concern. Review Comments 1. Existing Improvements. Label all existing improvements on the site. 2. Location of New Improvements. Ensure that the new improvements will be no closer to S. Hayfield Road than the existing improvements. 3. Building Restriction Lines (BRL). Label the side, front and rear BRL as indicated on the plan. 4. Distance to Property Lines. Show the distance from all new improvements to the property lines. 5. Lighting. Indicate if there will be any building -mounted lighting on the proposed structure. After you have revised the site plan, please resubmit two copies so that I may verify the information contained on the plan. I will need all approved review agency comment sheets and at least five copies of the final plan for approval. Comment sheets are required from the following agencies: the Virginia Department of Transportation, the Frederick County Inspections Department, the Frederick County Engineer and the Frederick County Fire Marshal. Sincerely, 7 Candice E. Perkins, AICP Senior Planner cc: Shenandoah Valley Electric Cooperative, 147 Dinkle Avenue, Mt. Crawford, VA 22841 CEP/bad Attachment 107 North Kent Street, Suite 202 • Winchester, Virginia 22601-5000 n BLACKWELL ENGINEEIRING, PLC 566 E. Market St., Harrisonburg, VA 22801 540-432-9555 540-434-7604(FAX) To: Frederick County, Department of From: Ethan Boyle Planning & Development Company: Frederick County Date: April 05, 2011 Address: 107 North Kent Street, Pages: See below Winchester, Virginia 22601 Job Name: SVEC — Hayfield Substation Job Number. 2200 X Plans ❑ Specs ❑ Report ❑ Proposal ❑ Letter ❑ Shops ❑ Article X Other Items: 1.2 full sets of drawings dated: 04/05/11 2. Request for Site Plan Comments form 3. One Site Plan application form & power of attorney form 4. Fee review check for $2,700 5. 2 drainage calculations for ESC For Your. X Approval ❑ Use ❑ Information ❑ Distribution ❑ Signature ❑ Review ❑ Per your request Comments: Sent Via: X US Mail 0 Delivery 11 Overnight 0 Other COUNTY of FREDERICK Department of Planning & Development 107 North Kent Street, Suite 202 Winchester, Virginia 22601 1 Shenandoah Valley Electric Cooperative 147 Dinkle Ave. 1 Mt. Crawford u16-t.,h5i)6z.: i 00.44 0 Mall6o From US POSTAGE NIxIE 231 5E 1 00 06/01/11 RETURN TO SENDER NO MAIL RCCCRTACLE UNADLC TO FORWARD DC: 22601SOD907 r2154 22134 26--42 039 COUNTY of FR1EDERICK Department of Planning and Development 540/665-5651 FAX: 540/ 665-6395 May 25, 2011 Mr. Ethan Boyle Blackwell Engineering, PLC 566 E. Market Street Harrisonburg, Virginia 22801 RE: Approval of Site Plan 02-11; S VEC — i-Iayiield Snllst' tioil Property Identification Number (PIN): 39-A-40A Dear Mr. Boyle: The above -referenced site plan was approved on May 25, 2011. The site plan is approved for the expansion of the existing SVEC — Hayfield Substation located on South Hayfield Road in the Back Creek Magisterial District. All requirements of the Frederick County Zoning Ordinance have been met in the approved site plan, including review agency comments from all relevant review agencies. I am providing you with three (3) copies of the approved site plan. Please forward these copies to the appropriate representative(s). Furthermore, advise the owncr(s) that a copy should be kept for future reference, and an approved copy must be kept on the construction site throughout the development process. Once site development is complete, the owner(s) should contact this office to schedule an on -site inspection. Do not hesitate to contact me if you have any questions or concerns. Sincerely, r Candice E. Perkins, AICP Senior Plarmer Attachments CEP/bad cc: Jane Anderson, Real Estate Gary Lofton, Back Creek District Supervisor Greg Unger and Kevin Crosen, Back Creek District Planning Commissioners .Shenandoah Valley Electric Cooperative, 147 Dinkle Avenue, Mt. Crawford, VA 22841 107 North Kent Street, Suite 202 - Winchester, Virginia 22601-5000 C1 AFR 1 5 2011 ocument Approval Form L J PLEASE REVIEW THE ATTACHED DOCUMENT. IF THIS DOCUMENT MEETS YOUR APPROVAL PLEASE INITIAL AND PROVIDE THE DATE AND TIME OF YOUR APPROVAL. IF THIS DOCUMENT DOES NOT MEET FOUR APPROVAL PLEASE PROVIDE COMWWTsAS TO WHAT YOU WOULD I TO HAVE C01V MED. DATE & I E Candice Mark Dam Eric Mike John commurTs: fits-�d V(At Received by Clerical Staff (Date & Time):