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Home My WebLink AboutWPO201900014 Plan - Submittal (First) WPO VSMP 2019-02-21Erosion and Sediment Control Narrative For: FOOTHILL FARM 753 ROCKY HOLLOW RD. TM 62 PARCEL 71 ALBEMARLE- COUNTY, VA HUC: Rivanna River - Meadow Creek 020802040401 LAT: 38' 03' 15"N LONG: 78' 24' 47"W Project Description: The proposed work involves the construction of a new residence, driveway and associated site grading required to create a new building pad for the house and to create open pasture. The property is located on the north side of Rocky Hollow Rd., about 0.25 mile east of Stony point Rd. The total area of the parcel is 187.32 acres. The total on-site disturbed area is approximately 4.05 acres. Work is anticipated to begin in Spring of 2019. Erosion control measures shown will protect the stream and property below from receiving silt -laden runoff. Existing Site Conditions: The project site area is in a mix open pasture and fully wooded hill side and generally slopes to the north at 10 to 25%. The pre and post drainage patterns will be nearly the same, with about 0.41 acres shifting from a 638 acre drainage area to a 160 acre drainage area. Adjacent Property: The property is surrounded by other large acreage parcels and wooded areas as well as small rural single-family lots. Off-site Areas: No off-site areas will be involved in this project. Soils: 236 -Davidson clay loam, 0.28 K -Factor, Group B soil 71 B-Rabun clay loam, 0.24 K -Factor, Group B soil 71 C-Rabun clay loam, 0.24 K -Factor, Group B soil 71 D-Rabun clay loom, 0.24 K -Factor, Group B soil Critical Erosion Areas: There are no critical erosion areas in the project area. Soil Stockpiles: A temporary soil stockpile will be utilized during the excavation to preserve topsoil for final grading around the house and driveway. Erosion and Sediment Control Measures: Unless otherwise indicated, all vegetative and structural erosion and sediment control practices will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook. Additional measures may be required during construction by the Erosion Control Inspector, as needed. Structural Practices: Construction Entrance: (CE) 3.02 (To be installed where construction site traffic exits the project area, to remove soil fronn tires prior to travel onpublic roads. The contractor shall clean and maintain the travelway as required to keep sou' from washing into unprotected areas and to provide a safe surface for pedestrian and vehicular access. The Construction Entrance will be located at an existing cattel guard about 0.4 miles from the public right of way. Once the building is erecter, all adjacent areas will be stabilized and the construction entrance will no longer be necessary.) Silt Fence: (SF) 3.05 Silt fence (wire -supported) shall be constructed along the lower limit of graded areas. (To be installed as shown on the plan, down -gradient of disturbed areas created by the proposed work, and above the proposed excavation to prevent up -gradient runoff from crossing disturbed areas. } Culvert Inlet Protection: (CIP) 3.08 A sediment filter located at the inlet to storm sewer culverts which prevents sediment from entering, accumulating in, and being transferred by the culvert It also provides erosion control at culverts during the phase of a project where elevations and drainage patterns are changing, causing original control measures to be ineffective. (To be installed at culvert inlets itrinlediately after installation) Rock Check Dam: (CD) 3.20 Small temporary stone dams constructed across a drainage ditch to reduce the velocity of concentrated flows, reducing erosion of die swale or ditch. Limited to use in small open channels which drain 10 acres or less; should not be used in live streams. (To be installed along the natural swales on either side of the grading area to rninhnize runoff velocity.) Level Spreader (LS) 3.21 An outlet for dikes and diversions consisting of an excavated depression constructed at zero grade across a slope to convert concentrated, sediment free runoff to sheet flow and release itinto areas of undisturbed soil which is stabilized by existing vegetation. (To be installed at the end of the roof drains to disperse concentrated runoff.) Permanent Seeding (PS) 3.32 Establishment of perennial vegetative cover by planting seed where permanent, long-lived vegetative cover is needed on fine -graded areas. (Permanent seeding will be provided on all disturbed areas designated to be landscaped on the site plan within. 7 days of final grading.) Mulching (MU) 3.35 Application of plant residues to disturbed surfaces to prevent erosion and reduce overland flow. Apply to all seeded areas. Refer to Table 3.35-A on Sheet C-3.3 for application rates. (To be installed along with Permanent Seeding) Blanketing/Matting (B/M) 3.36 Installation of soil stabilization matting on a prepared planting of a steep slope. (To be itastalled along driveway clitch where showta ora tlae playas.) Dust Control (DC) 3.39 Reducing surface and air movement of dust during land disturbance, demolition or construction activities in areas subject to dust problems in order to prevent soil loss and reduce dne i required the County, where disturbed presence of potentially airborne substances. {To be installed, f q by ty, soil is to retain unprotected for an extended period. Vegetative Practices: Temporary Seeding 3,31: All areas disturbed by construction that will not be brought to final grade for a period of more than 14 days, will be stabilized by establishing a good stand of grass. Lime 3.31: Unless it is known that the site will remain undisturbed for many months, lime is not necessary. If necessary, the amount will be determined by Soil Test, or 3 tons per acre of pulverized agricultural limestone, uniformly applied to surface to be seeded during seedbed preparation and incorporated into the top 2-4 inches of soil. Fertilizer 3.31: 600 pounds per acre of 10-20-10 or equivalent, uniformly applied to the surface to be seeded during seedbed preparation and incorporated into the top 2-4 inches of soil, Surface roughening 3.31: Where disturbed soils have been compacted, loosen soils by discing, raking, or whatever acceptable means available to receive seed. Seed 3.31: Seed shall be broadcast evenly and planted from Y4 to h inch deep. Seasonal seed selection shall be as follows: • Sept. 1 - Feb. 15: 50/50 Mix of Annual Rye and Winter Rye, 50-100 Ib/ac. • Feb. 16 - April 30: use Annual Rye, 60-100 Ib/ac. • May 1 - Aug. 31: use German Millet, 50 lb/ac. Areas which fail to establish vegetative cover adequate to prevent rill erosion will be reseeded as soon as such areas are identified. Foothill Farm VSMP/WP02019-)(xxxx Mcanagement Strategies: Construction should be sequenced so that grading operations can begin and end as quickly as possible. Areas that are not to be disturbed shall be clearly marked by the placement of the erosion control measures prior to construction. The job superintendent shall be responsible for the installation and maintenance of all erosion and sediment measures. Wlhere construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular trracking onto the paved surface. Where sediment is transported onto a public rosad surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and trransported to a sediment control disposal area. Street washing shall be alllowed only after sediment is removed in this manner. Sttabilization of Denuded Areas and Soil Stockpiles: Permanent or temporary soil stabilization must be applied to denuded areas within 7 days after final grade is reached on any portion of the site. Temporary soil stabilization shall be; applied within 7 days to denuded areas which may not be at final grade but will remain dormant (undisturbed) for longer than 14 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year. Scoil stabilization refers to measures that protect soil from the erosive forces off raindrop impact and flowing water. Applicable practices include vegetative establishment, mulching and the early application of gravel base on areas to be paved. Soil stabilization measures should be selected to be appropriate for the time of year, site conditions and estimated duration of use. Miming and Stabilization of Sediment Trapping Measures: Sediment barriers and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in amy land disturbing activity and shall be made functional before upslope land dissturbance takes place. Stabilization measures shall be applied to earthen structures such as dams, dikes, and diversions immediately after installation. Diisposal of Temporary Measures: All temporary erosion and sediment control mieasures shall be removed within 30 days after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program administrator. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be removed and replaced with suitably compacted soils, or, where applicable, permanently stabilized to prevent further erosion and sedimentation. Miaintenance: All erosion and sediment control structures and systems shall be maintained, inspected, and repaired weekly and after each significant rainfall or as needed to insure continued performance of their intended function. Any damage to structural measures shall be repaired immediately. Siilt fence shall be inspected after every rainfall event and at least daily during prolonged rainfall, as well as at the end of every working day, with any ne=cessary repairs made immediately. Accumulated sediment shall be removed arnd disposed of as it becomes necessary, or when deposits have accumulated to one-half of the above ground fence height. All undercutting or erosion shall be repaired immediately. the contractor shall follow all manufacturers recommendations for installation, maintenance, replacement, and repair. damages caused by construction traffic or other activity must be repaired before the end of each working day. AIII seeded areas are to be checked to insure a good stand is maintained. General construction notes for Erosion and Sediment ControlIp ars 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2., All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erasion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3., All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4., A copy of the approved erosion and sediment control plan shall be miaintained on the site at all times. 5., Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off-site borrow or waste areas), thre contractor shall submit a supplementary erosion control plan to the owner fow review and approval by the plan approving authority. 6., The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the pl+an approving authority. 7., All disturbed areas are to drain to approved sediment control measures at alll times during land disturbing activities and during site development until final stabilization is achieved. 8., During dewatering operations, water will be pumped into an approved filtering device. 9., The contractor shall inspect all erosion control measures periodically and affter each runoff producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 111. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 133. Borrow, fill or waste activity shall be conducted in a safe manner than Maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 14. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75ibs/acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. AlAernatives are subject to approved by the erosion control inspector. 153. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mwlch. Agricultural grade limestone shall be applied at 90lbs/1000sf, inicorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-57 Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erasion control inspector. 16. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps ares to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to halff their height must be cleaned and repaired immediately. 17. All temporary erosion 4and sediment control measures are to be removed within 15 days of final site stabilization, when measurers are no longer needed, subject to approval by the: County erosion control inspector. 18. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the, land disturbing activity commenced. MINIMUM STANDARDS MS -1 Permanent or temporary soil stabilization must be applied to denuded areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but will remain dormant (undisturbed) for longer than 15 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year. Soil stabilization refers to measures which protect soil from the erosive forces of raindrop impact and flowing water. Applicable practices include vegetative establishment, mulching, and the early application of gravel base on areas to be paved. Soil stabilization measures should be selected to be appropriate for the time of yeasr, site conditions and estimated duration of use. MS -2 During construction 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. MS -3 A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that, is uniform, mature enough to survive and will inhibit erosion. MS -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 upslope land disturbance takes pllace. MS -5 Stabilization meausures shall be applied to earthen structures such as dams, dikes, traps, basins and diversions immediately after installation. MS -6 Surface runoff firom disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres shall be controlled by a sediment basin. Tlhe sediment basin shall be designed and constructed to the a� ated sediment loading accommodatenticip g from the land disturbing activity. The outfall device or system design shall take into account the total drainage area flowing through the disturbed area to be served by the basin. MS -7 Cut and fill slopes shall be constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilizatiion shall be provided with additional slope stabilizing measures until the problem is corrected. MS -8 Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume, or slope drain structure. MS -9 Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. MS -10 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. MS -11 Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. MS -12 through 15 - Not applicable, no live watercourses. MS -16 Underground utility lines shall be installed in accordance with the following standards in addition to other applicable criteria: a. No more than 5+00 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 discharged in a manner that does not adversely affect flowing streams or off-site property. d. Restabilization shall be accomplished in accordance with these regulations. e. Applicable safety regulations shall be complied with. MS 17 Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto the paved surface. Where sediment is transported onto a public road surface, the road shall be cleaned thoroughly every four hours. Sediment shall be removed from the roads by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. MS -18 All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program administrator. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. MS -19 Drainage Area A is 160 acres. The increase in impervious area is less than 1% of the total watershed area. (9VAC25-870-66 C -3-a). Drainage Area B is 638 acres and slightly B is reduced in size by 0.4 acres. Concentrated flows at the driveway ditch and roof drains are routed to level spreaders to create sheetflow condition. The increase in impervious area is less than 1% of the total watershed area. (9VAC25-870-66 C -3-a). VICINITY MAP SCALE: i =2,000 FT. GENERAL EROSION AND SEDIMENT CONTROL NOTES ES -1: UNLESS OTHERWISE: INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE- CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBIING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES -3: ALL EROSION AND SEDIMENT COMTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES -4: A COPY OF 'THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAIN( :D ON THE SI1rE AT ALL TIMES: ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANIS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREA'S), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION COINTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES -7: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF 'THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. THE RLD IS RESPONSIBLE FOR ONGOING; MAINTENANCE AND OPERATION OF THE E&SC PLAN. FOR THE PURPOSES OF PLAN SUBMITTAIL, REVIEW AND APPROVAL, THE RLD IS B. CLARK GATHRIGHT, P.E. 1. Install Construction Entrance and Plhase 1 silt fence and check dam where shown on the plan. 2. Excavate and grade areas per the phasing sequences shown, while placing and compacting fill in the (proposed house site area. Utilize excavated topsoil to cover the previously excavated phasing area and provide permanent seeding mesasures to stabilize newly graded surfaces as the excavation phasing) progresses up the hill. 3. If the site will remain dormant for more than 15 days, provide temporary seeding measures to sta3bilize the surface. 4. When building construction is comp'►lete, completely distribute the temporary topsoil stockpile as necessary to complete final grading. 5. Apply mulching and permanent seecding on all permanently stabilized areas. 6. Remove silt fence and check damsr after all disturbed areas are stabilized, with County Inspector aplproval. DRAWING INDEX SITE SITE DATA: OWNER/DEVELOPER: TOBIAS A & LYNN T DENGEL TRUST 540 PARK ST. CHARLOTTESVILLE, VA 22902 LOCATION: 753 ROCKY HOLLOW RD. TM 62 PARCEL 71 ALBEMARLE COUNTY, VA MAGISTERIAL DISTRICT: RIVANNA PLAN PREPARED BY: B. CLARK GATHRIGHT, P.E. 100 10TH ST NE SUITE 200 CHARLOTTESVILLE, VA 22902 TOTAL SITE AREA: 187.32 ZONING: RA DATUM REFERENCE FOR ELEVATION: NAVD88 SOURCE OF TOPOGRAPHY: ROGER W. RAY & ASSOC.,iNC. - NOV. 12, 2018 NEW RESIDENCE AND DRIVEWAY SETBACKS: FRONT: 75 FT. SIDE: 25 FT. REAR: 35 FT. DISTURBED AREA: 4.04 ACRES EXISTING IMPERVIOUS SURFACE: 1.33 ACRES NEW IMPERVIOUS SURFACE: 0.72 ACRES WATER QUANTITY: LESS THAN 1% OF THE TOTAL WATERSHED (9VAC25-870-66 C -3-A) INCREASE IN SHEETFLOW VOLUME WILL NOT CAUSE OR CONTRIBUTE TO EROSION, SEDIMENTATION, OR FLOODING OF DOWN GRADIENT (9VAC25-870-66 D) WATER QUALITY: 1.42 LB./YR NUTRIENT CREDIT PURCHASE CRITICAL SLOPES: NO CRITICAL SLOPES IN THE PROJECT AREA. TIMING OF CONSTRUCTION, SPRING 2019 VIRGINIA OUTDOORS FOUNDATION EASEMENT 1 T-1.0 TITLE SHEET & EROSION AND SEDIMENT CONTROL NARRATIVE 2 C-1.0 OVERAL PROPERTY PLAN - EXISTING CONDITIONS & SWM PLAN 3 C-1.1 DRIVEWAY EROSION AND SEDIMENT CONTROL PLAN 4 C-1.2 HOUSE: -SITE EROSION AND SEDIMENT CONTROL PLAN 5 C-1.3 EROSION AND SEDIMENT CONTROL DETAILS 6 C-1.4 HOUSE -SITE DRAINAGE AREAS 7 C-1.5 WATER QUALITY CALCULATIONS CN CN CN0 5 !� CN (D > LULU C- 0 � 0 EI. CLARK GATHRIGHT lOiVAL I LJ X X X I� �- CN 0 4-1 F-- 03:: � M E -6 L) V) �- 3 LL cm6 7- _0 0 I-- , WIZ .1■r Cil 0 0 01: 0co_J LiiVD UM i-- I LL] REVISIONS: DATE: 02-21-19 DRAWING NUMBER: T-1.0 SHEET � F � - ___ . 1 . 1. ", "I _ __ . \ � , \ '� � , / �' / / _ - -, "___ __ — , I / , -71 __— - � I � / I � / � I '� / , / , / ,______ 11 � " z "''�"'�'"" - ,--I 1 ' J 62 90N I i / - - - - - - - - i 'd .1e 11 \ r / �'^ _) y � \1 \ \ ' i \ I --r� �v �- // f ! (- I--! / //- ` - �- _- //_ %�--/-- - _ 11 / J .. .. 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' \ %� \ \ � \ -- `\ I / — , I - % i / f f % ; i` \, \ I�,y, / '/ ' �' / / — --- _�`l dJ \ } I \ \ L� I l 1 / / 1 ,;; " PROPOSED DRIVEWAY PLAN / / ` ,�; ( �r 1 I -' �' ~ \ I ' 62-79 B6 \ ,, / I 1 1,// _ t / l / j �� ' `• SEE SHEET C-1,1 �,% / / // \\ \\1 k �' ,/�{ �,'/I,/�/ 6�'T=15A---------'' - - `. \ / \� \ - - - / ! \ \ y\ \ /\ / ` / , \ / r- \ \ \ \ \ \ 100 FT. 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CONCENTRATED FLOWS AT THE DRIVEWAY DITCH �' - J ) ! / / / / 1 /, ; _ 1 DRAINAGE DIVIDE ^------ �--- - (> / J � , / / / // ;= ,' AfRE ROUTED TO LEVEL SPREADERS TO CREATE •, f - y� % / l- / / l � /N /�/ / / / / /` / ,/ `� ,, // ,/ /',// i/' ,i' ,/ - - T,;. •� PROPERTY BOUNDARY - - - - - - SIHEETFLOW CONDITION. N ^ , , L / l `� / i / / %i .,,i �' / i/ ,� :' !' f ` \ /`�IN I / j // l 11J��, �i�w / // j / / % /, , � / / „ i / ' ---- `� \ STREAM 2, >�A A - 160.4 AC. r / i % i ! 1* �•\111 �,. / / / ` j / ` -- -- - __ f 1 / / / d/ / ui /' `/ / ' / � \ STREAM BUFFER — � � — � NIST INCREASE OF 0.4 AC. � ( j l r / r / / / / .c / i / / a / % , / NIET INCREASE OF IMP. AREA: 0.4 AC. .1777o Ji / / / / / wr,,` / / / / / / .,N,Y// // / / J`\ I 1 CRITICAL SLOPES 1 ,76 AC. DISTURBED AREA J "I - , / , / / / / / ( 1 l / 7-% / i �, / I/ X�r ,/ --,/ ".\ " \I y y ,/ // //I I / I / 3. DA B - 638 AC. �,s I I I j ( ( I j � 1% % / /--" ,6'316 / / I'X, /'/' J \ \ \ ! f NIET DECREASE OF 0.4 AC, I 1 I - NIET INCREASE OF IMP. AREA: 0.41 AC. � I { � � I I I I y I � ( / / / t / � � ""'� / / '' ' i'� ,,/ � � � \ �� -.. \ � 1 \\\ \` I I 2.28 AC, DISTURBED AREA , �, 1 ] \ 1 II I y 1, I ` ( \// ( / I l I ( 1 �' *7- / / / , "/,s' / _. f, , \ \' \ \\ \ \ \ \ �`�,\ \{ ( I I I 11 l(� 1 I I I f I I ,',?� / / \\\ \ 1\ f I } I 1 I I I / /--- -___/_` \ \ \ \\ \\ \\ \ \`1\ t I I i \ } I t y } y I ) \1 ! ! I I I / / 9 ,,, /Y = _- /- \ \ , \ \\ ` i - I'I}y }l}yIj)''r I I I ! / / /N /` '_ �• \',`'' OVERALL PROPERTY PLAN -EXISTING CONDITIONS & SWM PLAN TOPOSOURCE.COUNTYGIS 10'CONTOURINTERVAL �.l I y } f I ( I I� ( ( \ \ � � � _ � �I } 1y 'l � y 1 4 I I � � ( I f � I 11 � ! f1 1 e ) � � \ \ 1 \ ., •--'' —1.0 SCALE. 1 - 200 � } l 1 I I + \ ..r-'" \ ,t } I Il I }} � t } }} I I I I I I 1 ( f I, I l\ \ \ \ ,___� ,, 1 t I r ��1 1 S I I I I I I I �\ I \1 _ �. .! , I I I r 1( , I � ,,,1 I I CNN C�B Irl C) < __j j ' �+1 ) am,/— = U) u. cz _= �.. � C) ry 'T_ i � 0 C) CCLARK B.GHT � 15,p�s IONA L -11 '...r j— z O x I— X C\] m < CL_ T > x 1:2 W ® I?: > 7—v) 0 U) ci 3:: m z IIS E cc L Lv-i � — t2I M��0 � _ I O a) 0 � .. �5— ■� _�� __j� a_ (r) 0 co CC � � 0 � c� ,. LL O� REVISIONS: DATE: 02-21-19 DRAWING NUMBER: c— I s 0 SHEET 2 OF 7 \ �A 0c) ;r EXISTING HOUSE & .^ OUTBUILDINGS1-01 r�l 10 . �6, /V j PRE/POST DEVELOPMENT i DRAINAGE DIVIDE Ap ,( f7 1 �Cl) I / � C(�7D; (071 — (( L71 C AT&T FIBER OPTIC EASEMENT - A Iwo LOCATE CONSTRUCTION - _ �4 ENTRANCE AT EXISTING - r — _ CATTLE GUARD j "I WIMMINIMM EXISTING DRIVEWAY EROSION & SEDIMENT CONTROL PLAN — , > SCALE: 1'' = 100' TONS' CONSTRUCTION ENTRANCE 70' MIN.EXISTINCu PAVEMENT A __3 5:1 III=1 I I III III=1 I I IIII i i-` ., , ''II11�11111111111�11111� FILTER CLOTH 6" MIN A MOUNTAIBLE BERM (OPTIONIAL) SIDE ELEVATION EXISTING GROUND 70' MIN. BWASHRACK 10' MIN. (OPTIONAL) 12' MIN. 0' MIN EXISTINIG PAVEMEINT 1 VDOT #1 �� POSITIVE DRAINAGE 101 MIN. COURSE AGGREGATEB I TO SEDIMENT I * MUST EXTEND FULL WIDTH TRAPPING DEVICE OOF PERATIONS AND EGRESS PLAN VIEW 12' MIN.. YY Yr x 3" MIN. r/k f 3" MIN. III IIII III — FILTER CLOTH SECTION A — A 6'-7' I it REINFORCED CONCRETE DRAIN SPACE SECTION B—B SOURCE: ADAPTED from 1983 Maryland Standards for Soil erosion and Sediment Conirol, and Va. DSWC Plate 3.02-1 STONE ACC'Ess E 'g27i &ak 114 71; i&=_ ORE l EROEIL SI 3N ! ACCESS WASHRA"Y t....:EXI ING MiK* # p * : R L_011sEll0I" E?,,l�`a'$I 'L.l,�s ��T�.t G,} �"�aE �#1,�� I s'g cE ,z�,� Vii" �. OF II4A Int S N -ID l f3R I: "LAN i _ jTo SEDNAFNIT TRM i?l {, Tt { 1X m ECTI.Q A—A A in iftni iii witer tap of .l. hicli uiust be i istalle(i Aitli l iiiiiiiiil ull 2 filch bath~ oc . shiltoff valN e huppl)ill9 a ' is'Il hose vvith a ctiw-HiAel= of1.; IliGlif�s f i"-adequiate Diol .�talltl`e,*,iire Wash '4 Ater ilillst be caii'ieil avvay frwil the ellti�'lilt to ti l appiove€t settling aro to I -el ove .�e�liilient: A11 sedl�.ilieilt- Miall lieprevelito will elitel*g Stollli Llitcll s., of wittuotil`ses•. PAVED WASH RACK I,Q SCAV.F ALT: PAVED WASH RACK, IF REQUIRED BY COUNTY E&SC INSPECTOR rI i 8BE i / / J / U w z to ,( W TOPO SOURCE: COUNTY GIS 10' CONTOUR INTERVAL LINETYPE & SYMBOL LEGEND EXISTING CONTOUR LINE PROPOSED CONTOUR LINE PROPERTY BOUNDARY — --- -- DRAINAGE DIVIDE LIMIT OF GRADING ---------------- SOIL TYPE BOUNDARY SOIL TYPE CONSTRUCTION ENTRANCE 3.02 CONSTRUCTION ROAD STABILIZATION 3.03 CRS SILT FENCE 3.05 S� CN M _ _j uj UJUJ H op r B. CLARK GATHP,IGHT "�IOIL'AL E� x ,-- x ,-- �-- W s 0 u) LIJ (1) V) 4-1 -0 E -a- V) 0 z ry LL 0 U -i __j I...t._. L)< 0 J .� > 07M LL F- I- REVISIONS: DATE: 02-21-19 DRAWING NUMBED: uo� —I • SHEET 3 OF 7 6 AT&T FIBER OPTIC EASEMENT LEVEL SPREADER #2 L=10` .~. \ � v \ \� ��----_ -^~��. SEE SHEET C-1.1 ri--'�I-10 USE SITE EROSION & SEDIMENT CONTROL PLAN 2' CONTOUR INTERVAL SCALE I"=40' SOURCE OF TOPOGRAPHY: ROGER W. RAY & ASSOC.,INC. — NOV. 12, 2018 SOLID WASTE ROI�I-L-OFF DUMPSTER run|-*-JuHm ~- -"` C=`.`"=~.E`~ )PROVED ~"~~~ '~ � TW 782.5 / / ` ~ ~~ _ / `- LINETYPE & SYMBOL LEGEND EXISTING CONTOUR LINE ------ ---�-' -�----' PROPOSED CONTOUR LINE PROPERTY BOUNDARY DRAINAGE DIVIDE L|WR OF GRADING - - - - - --- --- ---- SOIL TYPE BOUNDARY SOIL TYPE SWPPP NOTE: THE USE OF ICALS/SOLVENTS IS NOT ANTICIPATED. PAINTS, STAINS AND POLYURETHANE FINISH MATERIALS WILL BE STORED INSIDE THE BUILDING. � CONSTRUCTION ENTRANCE 3.02 CONSTRUCTION ROAD STABILIZATION 3.O3 SILT FENCE 3.05 CULVERT INLET PROTECTION 3.08 ROCK CHECK DAN 3.20 LEVEL SPREADER 3.21 TEMPORARY SEEDING 3.3l PERMANENT SEEDING 3.32 MULCHING 3.35 SOIL BLANKETS & MATTING 336 DUST CONTROL 3.3Y | CONSTRUCTION OF A SILT 1 KE NC k. (WITH WIRE SUPPORT) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. FLOW 3, ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. 2 ��t FLOW �ial�l� r .! EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SOURCE: A�gted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PLATE, 3,05-1 LOCATE 100 FT. SPACING ALONG DRIVEWAY DITCH FIL (Of VDOT #1 COARSE AGGREGATE (DOWNSTREAM VIEW) rAll'151fA1 I FLOW CROSS SECTION JUTE, OR EXCELSIOR LENGTH: 10' OR EQUIVALENT STAPLED LIN PLACE VARIABLE (MIN. V) BURIED 6" MIN, .� BURIED 6" MIN. LEVEL LIP OF SPREADER — h"f"V- 6, LEVEL SPREADER WITH VEGETATED LIP (4 CFS CAPACITY) SILT FENCE DETAILS BRING MATERIAL DOWN TO A LEVEL AREA BEFORE CHECK DAPI DETAILSr3"�(__,ULVERT TERMINATING THE INSTALLATION. TURN THE END INLET PROTECTION DETAIL 4 LEVEL SPREADER DETAIL -I , SCALE: NONE -1 c.3j SCALE: NONE -1 ,3 SCALE: NONE -1 , SCALE: NONE SHAI 1 OW WHERE THERE IS A BERM AT THE TOP OF THE SLOPE, BRING THE MATERIAL OVER THE BERM AND ANCHOR IT BEHIND THE BERM. ON SHALLOW SLOPES, STRIPS OF NETTING PROTECTIVE COVERINGS MAY BE APPLIED ACROSS THE SLOPE. ON AFP SLOPES, APPLY PROTECTIVE COVERING PARALLEL TO THE DIRECTION OF FLOW AND ANCHOR SECURELY. IN DITCHES, APPLY PROTECTIVE COVERING PARALLEL TO THE DIRECTION OF FLOW. USE CHECK SLOTS AS REQUIRED. AVOID JOINING MATERIAL IN THE CENTER OF THE DITCH IF AT ALL POSSIBLE. SOURCE: ADAPTED FROM LUDLOW PRODUCTS BROCHURE FLAIL: 6.66-1 BRING MATERIAL DOWN TO A LEVEL AREA BEFORE SOIL TERMINATING THE INSTALLATION. TURN THE END (B/M) DETAILS UNDER 4" AND STAPLE AT 12" INTERVALS. SCALE: NONE Improved Perennial Ryegrass 0.10 Kentucky Bluegrass 0-1.0 Hi�h-L4aintenanc:e Lawn IN DITCHES, APPLY PROTECTIVE COVERING PARALLEL TO THE DIRECTION OF FLOW. USE CHECK SLOTS AS REQUIRED. AVOID JOINING MATERIAL IN THE CENTER OF THE DITCH IF AT ALL POSSIBLE. SOURCE: ADAPTED FROM LUDLOW PRODUCTS BROCHURE FLAIL: 6.66-1 Minimum Care Lawn SOIL STABILIZATION BLANKET (B/M) DETAILS 200-250 lbs. SCALE: NONE Improved Perennial Ryegrass TYPICAL TREATMENT— 1 (SOIL STABILIZATION BLANKET) INSTALLATION CRITERIA 2„ TAMP FIRMLY ANCHOR SLOT TAM P FIRMLY y r ANCHOR SLOT /f ��,• NOTES y y., APPROXIMATELY 200 STAPLES REQUIRED PER 100 SQ. YDS. OF MATERIAL ROLL. ANCHOR SLOTS, JUNCTION SLOTS & CHECK SLOTS TO BE BURIED 6" TO 12". i 12" MAX. 4.1 OR FLATTER 6" MAX. STEEPER THAN 4:1 JUNCTION SLOT EDGE AND END JOINTS CHECK SLOT * TO BE SNUGLY ABUTTED "d (JUTE MESH WILL HAVE TERMINAL FOLD STAPLED LAP JOINT IN LIEU OF EDGE JOINT) — LAP JOINT 2" MIN. I I I (JUTE MESH ONLY) I 5' MAX. 4:1 OR FLATTER 3' MAX. STEEPER THAN 4:1 �I I I 6" TO 12" I I I I I I I I I I I I I I I I I CHECK SLOT JUNCTION SLOT r,,,� *CHECK SLOT I I I I I _� i-1'To� �.I I I II� L I I ISI I I VAR. VAR. I 6"T08"MIN. PLAN VIEW STAPLING DIAGRAM STAPLE FORMED FROM NO.11 STEEL WIRE. *CHECK SLOTS AT MIN. EQ S" STAPLE MIN. LENGTH FOR SANDY SOIL. 50' INTERVALS; NOT REQINTERVALS; WITH ALL 6" STAPLE MIN. LENGTH FOR OTHER SOIL. "rrhAMII iAnnni"Ri AII 12" SOURCE: VDOT ROAD AND BRIDGE STANDARDS TERMINAL FOLD -• ,..,., 1, 1LY 2" PLATE: 3.36-2 IM TABLE 3;32-C SITE SPECIFIC SEEDING MIXTURES FOR APPALACHIAN/MOUNTAIN ARE, A :F32 6 TABLE 3.32—C -1.3 111 -302 DITCH CALCS MAX. SLOPE: 11.5% Q10 FLOW: 2.74 CFS Q10 DEPTH: 0.19 FT Qio VELOCITY: 5.9 CFS 2' 47TYP. DITCH PROFILE ALE: NONE 2:1 OR FLATTER CN CN T C f� YI A LLJ Uj " r cD B. CLARK GATHRIGHT � LIC. Ls ..Lj 6, �> j� ,,rel l� S�fONAL �� —— O 0 M 0 W 0 E -6 :�i cc LL 1`` _ C\j_ CC c LO C1_ LL U LL! REVISIONS: DATE: 02-21-19 NUMBER; NEST OF 7 Total Lbs, Minimum Care Lawn per Acre Commercial or Residential 200-250 lbs. Kentucky 31 or Turf -Type Tall Fescue 90-100% Improved Perennial Ryegrass 0.10 Kentucky Bluegrass 0-1.0 Hi�h-L4aintenanc:e Lawn Minimum of three (3) up to five (5) varieties of bluegrass from approved list for use in Virginia. 125 lbs. General Slope f3:1 or lessi - Kentucky 31 Fescue 128 lbs. .Red Top Grass 2 lbs.. Seasonal burse Crap 20 lbs. 150 ll;lS> Uw-Maintenance Slope '( teener than 3:1) Kentucky 31 Fescue 108 lbs. Red Top Grass 2 lira. Seasonal burse Crop 20 lbs. Crownvetch * * * 20 lbs. 150 tbs. * Perennial Ryegrass will gi r=ina.te faster and at lower soil temperatures than fescue, thereby providing cover and erosion resistance for seedbed. * Use seasonal nurse crap in accordance with seeding dates as stated below; March, April through May 15th ............ ... . . An-nual Rye yFoxtail May 16th through August 15th ................... Millet August 16th through September, October . : . .......... Annual Rye November through February . .................... Winter Rye * ** If Flatpea is used, increase to 30 lbs./acre. All legume seed mist be properly inoculated. Weeping L vegra.ss may also be included In any slope or low - maintenance mixture during warmer seeding periods, add 10-20 lbs/acre in Mixes. 6 TABLE 3.32—C -1.3 111 -302 DITCH CALCS MAX. SLOPE: 11.5% Q10 FLOW: 2.74 CFS Q10 DEPTH: 0.19 FT Qio VELOCITY: 5.9 CFS 2' 47TYP. DITCH PROFILE ALE: NONE 2:1 OR FLATTER CN CN T C f� YI A LLJ Uj " r cD B. CLARK GATHRIGHT � LIC. Ls ..Lj 6, �> j� ,,rel l� S�fONAL �� —— O 0 M 0 W 0 E -6 :�i cc LL 1`` _ C\j_ CC c LO C1_ LL U LL! REVISIONS: DATE: 02-21-19 NUMBER; NEST OF 7 CN C) CN �. C9 ® L 03 LLJ U) .z Ise CIO c) ® C cz) B. CLARK GATHRIGHT Ca Liic. N 0:61 p� _.4 x x x > 04 u -i 0 an 0 uj--; LL ' o (1) 0 w LLJ AMA 0 r Lo ALL I REVISIONS: DATE: 02-21-19 DRAWING NUMBER; Com"', -I 1 4 SHEET 6 OF 7 * - LOAD REDUCTION MET BY 1.42 LB/YR NUTRIENT CREDIT PURCHASE