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HomeMy WebLinkAboutWPO201300034 Plan - Approved 2013-05-09EROSION * SEDIMENT CONTROL PLAN FOR 15ELLARM I N E TMF 05900 -00 -00 -03080 ALBEMARLE COUNTY, VIRGINIA VICINITY MAP SCALE: 1"- 1,000 Source: Google Maps SHEET INDEX SHEET C I -COVER SHEET SHEET C2 EROSION � SEDIMENT CONTROL NARRATIVE SHEET C3 - SOIL TYPE, DRAINAGE DIVIDES AND SITE OVERVIEW SHEET C4 - STREAM CROSSING DESIGN * MITIGATION SHEET C5 - EROSION � SEDIMENT CONTROL PLAN SHEET CG - EROSION * SEDIMENT CONTROL PLAN SHEET C7 - EROSION * SEDIMENT CONTROL DETAILS GENERAL CONSTRUCTION NOTES 1. Prior to any construction within any existing public right -of -war, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies occur the requirements of the permit shall goverr: 2. All materials and construction methods shall conform to current specifications and standards of VDOT unless otherwise noted. 3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction.O 4. All slopes and disturbed areas are to be fertilized, seeded and nulched. r 5. The maximum allowable slope is 2 :1 (horizontal: vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to be achieved. O, 6. Paved, rip-rap or stabilization mat lined ditch may be required k..-hen in the opinion of the Count Engineer, or designee, it is deemed necessary U P P Y q P Y 9 9 Y �B'TIN M. SHIMP in order to stabilize a drainage channel. Lic. �� f 183 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices. - 8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe Class III. �0 w 9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). SSIO L _ NA GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIM FNT CONTROL PLANS 1. The plan approving authority must be notified one week prior to the pre- construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625 -02 -00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shay be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary eros ;un control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional „ ..�sion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into h approved filtering device. 9. The contractor shall inspect all erosion control measures perioc' ally and after each runoff producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borr'* area. 11. All waste materials shall be taken to an approved waste area. Furth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13 -301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9 :00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner that maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 Ibs /acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs /100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs /1000sf, incorporated into the top 4 -6 inches of soil. Fe; tiiizer shall be applied at 1000lbs /acre and consist of a 10 -20 -10 nutrient mix. Permanent seeding shall be applied at 180lbs /acre and consist of 95% Kentucky 31 or Tall Fescue and 0 -5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs /100sf. Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to b)e inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repaired immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17 -207B) PLAN NOTES: Source of Boundary and Topography: Field Survey by Roger Ray & Associates, Inc. Drainage Areas determined using topography from the Albemarle County GIS APPROVED by the Albemarle County Community Development Department Dote 3 -,5:ef Z013 File was Z5 01:9 Gczs3 FILE G- J-4111 This copy of the a�lnwoved plan i. reserved for the c. Jai fllas of Albemafla (;oust,. Pleases do nc: remove this plan from the file. PROJECT DESCRIPTION, GENERAL NOTES, EROSION &SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS 'SITE IS A VACANT RURAL AREA. THE PROPOSED USE IS A SINGLE FAMILY RESIDENCE. THE PROJECT AREA INVOLVES A DRIVEWAY CONNECTION TO THE PROPOSED RESIDENCE WITH A STREAM CROSSING. THE TOTAL AREA OF DISTURBANCE IS 5.97 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. 2. INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. 3. GRADING AND PLACEMENT OF FILL SHALL BE IN GENERAL ACCORDANCE WITH THE PLAN. 4. CONSTRUCTION OF STREAM CROSSING AND ADDING LANDSCAPING IN ACCORDANCE TO STREAM BUFFER MITIGATION REQUIREMENTS. 5. ESTABLISHMENT OF PERMANENT STABILIZATION OF ALL DISTURBED AREAS. EXISTING SITE CONDITIONS THE SITE IS CURRENTLY A VACANT RURAL AREA. ADJACENT PROPERTIES THIS PROPERTY IS BORDERED TO THE NORTH BY VACANT RESIDENTIAL LAND, TO THE EAST AND SOUTH BY RURAL PRESERVATION AREA, TO THE WEST BY A SINGLE FAMILY RESIDENCE. OFFSITE AREAS: THERE ARE NO OFFSITE AREAS PROPOSED WITH THIS PROJECT. SOILS THE SITE CONTAINS THE FOLLOWING SOIL TYPES: 14C - Chester Loam - 7 to 15% Slopes 14D - Chester Loam - 15 to 25% Slopes 14E - Chester Loam - 25 to 45% Slopes 16 - Chewacla Silt Loam 20C3 - Cullen Clay Loam - 7 to 15% Slopes 36C - Hayesville Loam - 7 to 15% Slopes 37C3 - Hayesville Clay Loam - 7 to 15% Slopes 37D3 - Hayesville Clay Loam - 15 to 25% Slopes 41B - Hiwassee Loam - 2 to 7% Slopes 56B - Meadowville Loam - 2 o 7% Slopes CRITICAL AREAS THE PROPOSED STREAM CROSSING IS A CRITICAL AREA ON THIS SITE. EROSION & SEDIMENT CONTROLS 1. CONSTRUCTION ENTRANCE: INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND CONFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 2. PERMANENT SEEDING: PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. PERMANENT SEEDING STABILIZES DISTURBED AREAS AND PROVIDES LONG TERM SITE COVER. 3. DIVERSION DIKE: A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM, UNPROTECTED SLOPES AND TO A STABILIZED OUTLET, OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09. 4. SILT FENCE: INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.05. THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FENCE SHALL BE INSPECTED AND MAINTAINED TO ENSURE CONTINUED PERFORMANCE. PERMANENT STABILIZATION AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: STAGE 1 1. INSTALL CONSTRUCTION ENTRANCE. 2. INSTALL SILT FENCE, DIVERSIONS, AND TRAPPING MEASURES AT THE LOCATIONS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN. 3. INSTALL CULVERTS 2 AND 3 AND CONVEYANCE CHANNEL AS SHOWN ON THE PLANS. STAGE 2 CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E &S CONTROL MEASURES. STAGE 3 1. UPON APPROVAL OF ALL E &S CONTROL MEASURES, DRIVEWAY CONSTRUCTION MAY BEGIN. 2. MAINTAIN ALL E &S CONTROL MEASURES AND APPLY TEMPORARY SEEDING AND DUST CONTROL AS NEEDED. STAGE 4 ESTABLISH AND MAINTAIN PERMANENT STABILIZATION, INCLUDING VEGETATION OF ALL SLOPES AND GRASSED AREAS. CONSTRUCTION MAINTENANCE THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. ALL E &S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS PRACTICABLE. 2. THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING, DETERIORATION OR SIGNIFICANT EROSION. SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. 3. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL, OTHER APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS. 4. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS MAINTAINED. 5. AREAS WITH RIP -RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE IF HIGH FLOWS HAVE DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E, &S CONTROL PLAN. ENVIRONMENTAL CONTROLS 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO COMPLY WITH LOCAL ORDINANCES, STATE AND FEDERAL LAWS AND REGULATIONS APPLICABLE TO WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUT -DOWN OF MOTORIIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. EROSION & SEDIMENT CONTROL PERMITTING CONTRACTOR SHALL BE RESPONSIBLE IFOR OBTAINING ALL LOCAL AND STATE EROSION AND SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. GENERAL NOTES 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION OR DATA. THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING THE ACCURACY OF THE DATA, FOR LOCATING ALL UNDERGROUND UTILITIES, FOR COORDINATION OF THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION, FOR THE SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER. THE CONTRACTOR SHALL CONTACT "MISS UTILITIES" OF VIRGINIA AT 1- 800 - 552 -7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, UTILITIES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. ANY DAMAGE CAUSED BY THE CONTRACTOR OR ITS SUBCONTRACTORS SHALL BE THE CONTRACTOR'S SOLE RESPONSIBILITY TO REPAIR OR REPLACE. THIS EXPENSE IS THE CONTRACTOR'S RESPONSIBILITY. 3. REPLACEMENT OR REPAIR OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY /PROTECT EXISTING STRUCTURES FROM DAMAGES. 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS, ADJACENT LAND OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO COMPLETING ANY OFF -SITE WORK. 6. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 8. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL BOUNDARIES, BUILDINGS, VEGETATION, AND OTHER PERTINENT SITE ELEMENTS. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 9. CONTRACTOR SHALL SUBMIT FOR THE APPROVAL OF THE OWNER SUBMITTALS OF ALL SPECIFIED MATERIALS LISTED IN THE PLANS, TO INCLUDE SHOP DRAWINGS, MANUFACTURER'S SPECIFICATIONS AND LABORATORY REPORTS. THE OWNER "S APPROVAL OF SUBMITTALS WILL BE GENERAL AND WILL NOT RELIEVE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. 10.CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS, INSPECTIONS, BONDS, AND OTHER RELATED ITEMS IN ACCORDANCE WITH LOCAL AND STATE POLICY. MINIMUM STANDARDS (MS) All applicable Virginia Erosion and Sediment Control Regulations and Minimum Standards shall be adhered to during all phases of construction. These include, but are not limited to the following: 1. STABLIZATION OF DENUDED AREAS: Permanent or temporary soil stabilization shall be applied to bare areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade, but will remain dormant or undisturbed for longer than 30 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2. STABILIZATION OF SOIL STOCKPILES: During construction of the project, soil stockpiles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3. PERMANENT VEGETATIVE COVER A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieve that, in the opinion of the county Inspector, is uniform and mature enough to survive to inhibit erosion. 4. TIMING & STABILIZATION OF SILT TRAPPING MEASURES: Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land disturbing activity and shall be made functional before upslope land disturbance takes place. 5. STABILIZATION OF EARTHEN STRUCTURES: Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6. SEDIMENT TRAPS AND BASINS: A sediment basin shall control surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres. The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading for the land disturbing activity. The outfall device or system device shall take into account the total drainage area flowing through the disturbed area to be served by the basin. 7. CUT AND FILL SLOPES: Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilization shall be provided with additional slope stabilizing measures until the problem is corrected. & CONCENTRATED RUN -OFF DOWN CUT OR FILL SLOPES: Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume, or slope drain structure. 9. WATER SEEPS FROM A SLOPE FACE: Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 10. STORM SEWER INLET PROTECTION: All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. 11. STABILIZATION OF OUTLETS: Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. 12. WORK IN LIVE WATERCOURSES: When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport and stabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction of causeways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. 13. CROSSING A LIVE WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, a temporary stream crossing constructed of nonerodible materials shall be provided. 14. APPLICABLE REGULATIONS: All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. 15. STABILIZATION OF BED AND BANKS The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. UNDERGROUND UTILITIES: Underground utilities shall be installed in accordance with the following standards in addition to other criteria: a.No more than 500 linear feet of trench may be opened at one time. b.Excavated material shall be placed on the uphill side of trenches c. Effluent for dewatering operations shall be filtered or passed through approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or offsite property. d.Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e.Restabilization shall be accomplished in accordance with these reigulations. f. Applicable safety regulations shall be complied with. 17. CONSTRUCTION ACCESS ROUTES: Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto paved surfaces. Where sediment is transported on too a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual lots as well as to larger land disturbing activities. 18. TEMPORARY E &S CONTROL MEASURE REMOVAL: All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sediment. 19. ADEQUACY OF RECEIVING CHANNELS: Properties and waterways downstream from the development site shall be protected from sediment deposition, erosion and damage, due to increases in volume, velocity and peak flow rates of stormwater runoff for the stated frequency storm of 24 -hour duration. 0 U JIJSTIlN M. SHIMP a Lic. 1P. 4 183 ro C �( ►� w� �O ��'SSroNAL El`s \v \ 1 1 IN \ \� MEW 'N y t9 J / �x r w , 1U \ l I — , I i Jo ' \ � -'/ ��. vt� , iC -�..: �, ..r�,�-�'\ % '-.,,t - - -,.,,T ♦` �.l \ Ls�J /' • ^`.'`, ..,J rrr�C .,>°-0 i ♦♦ I �� `$��i �..�" 1/.� • ` / I ```� r �Tp — i i \ `. \ \ &".w �_� / � j S'I• /'♦♦ � '�'e£�C l �` ` `` ir�'r I �` � �.cr�'_.••_•^r.�---- `� .g i i - -:r_ ♦p \ , , , •c, � ..,9 ('ate � ♦ _ •♦' i , , �, � +.......�+ 1, k lae 1 1;74 \ \ \ \ f \ `°.,• \` \, I ` `, `\ \ `�``.`.. 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SHIMP . Lic. No. 4 183 �o sloNAr. C 0 Q •L U c1J q ° W� O ° Z� Q g z 0 o U Z Z� � W Q W W Z� Q 0 � N� W 0 m J W Q Date 08/26/2013 Scale 1 = 100 Sheet No. C3 OF 7 File No. 13.003 i It s\ w o D A5 "H 0 36 W 27 W 9 /o 0 AM BUFFER 100 Ft STR -----/ 1 to I j 48 "P 1 w. f � \ 6 "C LOU -:. 484 482 514 IWO 476 474 0 +00 FRAME � x BARN P� 0 X X 'i Culvert dwall �l STREAM �tJFF DISTURB -t E �~ F AREA = X0.21. AC\ X 0\ W ` y 4'-11" Arch culverrContech or equivalelit\ \ To Hof oar 1�t-El v: 478.18 1 15 " W DBL C 00 0r-� o00 BOXWOOD C CEDAR 0 0.00 LO °' �I- G GUM H :.::..:...... d- HICKORY L LOCUST N 0 Co 0 OAK STREAM �tJFF DISTURB -t E �~ F AREA = X0.21. 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Cal. /Height Quantity + Large Shade Tree Species To Be Determined At The Time of Planting "Albemarle County Plant List 1 Y2 " -1 3/4" Cal. 25 Medium Evergreen 4'- 5'H 25 See Approved Shrub 1 %2' - 2 %2' H 25 M TIGAT ON PLANTING CALCULATIONS 9855 SF disturbed stream buffer 9855 SF / 400 SF = 25 25 Large Canopy Trees 25 4ft Evergreen 25 Small Shrub 15 "- 18" tal o JU IN M. HIM S P 4/5183 �_d C Zql�& xk, 0 C V810NAL �Cs 3.02 --C_ I INSTRUCTION ENTRANtE CE INLET PROTECTION IP \3. 2 CLEAN WATER DIVERSION 3.18 Ol7TCE i PROTECTION 0 \ 3.21 L E VL-�P-R END ER — U S C \ 35 UTILITY STRE_AM.. SC 3.32 PERMANENT SEEDING PS S Temporary Stream / Cr ssing for Arch Span t �\ 3.35 MULCH''— MU // / ulvert Construction ANDr/ox. Location of / / � Existing Farm Road / / / 15"C 12 „WC 15"C WOODS 15 DBL C r 12"C r� 15 "C Contractor to ins all ulver . 2'� 1 / / / 9 -,WC 40 0 40 :0 121 40 ��'Gl U JUST N M. SHIMP ,/ Fite. N o. 4 183 o ,� ��SSIONAL �� 47'48'2A"W 531.93' j' 40 0 40 80 120 ■■: ■ ■■■ ,0 PERMANENT SEEDING P MULCH MU ,X/ '0000 o U I Z 0 Z w NW W �z 0 t I w d z :i o � z W az z O '- w w� F w N � pUi � ® N � Q N 1 w N m 0 � N W Q N U v JL;8TIN M. SHIMP ,!� Lic. o.4 183 Y�d 2 w� �o jONAL o2 1A�/I 0 O U (n 47 U O 0 ° W z Q z J V 0 � s Z Roo:; 0 U z z � W 0 � U � W W (� J z Q 0 W 0 m � J W Q Date 08/26/2013 Scale 1" = 50' Sheet No. C6 OF 7 File No. 13.003 ENDWALL PERMANENT SEEDING SPECIFICATIONS V c A A A Z February 16 through April 30: w N w Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; ,. z 70' MIN EXISTING Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes 3 PAVEMENT are greater than 3:1. w TOE OF FILL CULVERT A 3 3do I lak�Anl d May 1 through August 15: z 2 o Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; "'rr� rl-� PIPE OUTLET TO FLAT Foxtail Millet - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes w a ° 6 "MIN. NTA BERM AREA WITH No DEFINED FILTER A are greater than 3:1. (OPTIONAL) CHANNEL D CLOTH EXISTING SECTION C -C PLAN VIEW August 16 through October 31: Kentucky 31 Fescue - 128 Ibs /acre; Red Top Grass - 2 lbs/acre; GROUND Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes 70' MIN La greater than 3:1. ° ° z o % November 1 through February 15: - - - Kentucky 31 Fescue 128 lbs/acre; Red Top Grass 2 lbs/acre; Winter ° o Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater TOE OF FILL r than 3:1. SECTION A -A FILTER CLOTH KEY IN 6 " -9'; RECOMMENDED FOR ENTIRE PERIMETER j��1) 0 ° ° MULCHING SPECIFICATIONS: N z Straw or hay at a rate of 2 tons /acre. Must be anchored. Spread with �j SILT FENCE ° ° * I EXISTIN > mulch blower or by hand. > DISTANCE IS 6' MINIMUM IF FLOW C� N PAVEMENT 3 OUT ET PROTECTION NO CHANNEL (OP) ~ N m IS TOWARD EMBANKMENT - C LIME AND FERTILIZER SPECIFICATIONS: j� W - FLOW Not To Scale Lime and fertilizer needs should be determined by soil tests. Soil tests Z1 may be preformed by the Cooperative Extension Service Soil Testing W a Laboratory at VPI &SU, or by a reputable commercial laboratory. L VDOT #1 o Information concerning the State Soil Testing Laboratory is available from N o % ]�� % ]�% j %�% COARSE r County Extension Agents. Under unusual conditions where it is not Ol O1 d A STONE 1 1 V 11 ON V AGGREGATE A possible to obtain a soil test, the following soil amendments will be *MUST EXTEND FULL WIDTH d applied: OF INGRESS AND EGRESS For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons PLAN VIEW A per acre, and fertilized at a rate of 1,000 lbs. per acre of 10 -20 -10 (10 OPERATION lbs. per 1,000 square feet) or equivalent. 1.0' 1.5' For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons 12' MIN d o per acre, and fertilized at a rate of 600 lbs. per acre of 10 -20 -10 (10 �- lbs. per 1,000 square feet) or equivalent.f PIPE OUTLET 0 WELL DEFINED CHA NEL Q H 3 MIN PLAN VIEW 3do (MIN.) JUSLTIN o. 4SHIMP > FLOW 25' ,_,��- 3 "MIN L a 5 PERMANENT SEEDING PS C7 Not To Scale �0�, FILTER CLOTH SECTION A -A o % �IV SIONAL ESC VDOT #3, #357, #5, #56 OR #57 COARSE AGGREGATE CLASS I RIPRAP SECTION A -A TO REPLACE SILT FENCE IN " HORSESHOE " WHEN FILTER CLOTH KEY IN 6 " -9'; RECOMMENDED FOR ENTIRE PERIMETER HIGH VELOCITY OF FLOW IS EXPECTED NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION (__2 Stone Construction Entrance CE BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED � DIVERSIONS 1 PROTECTION (IP�Not To Scale USING PLATES 3.18 -3 AND 3.18 -4. ( d C7 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT C7 Not To Scale LESS THAN 6 INCHES. 10% SETTLEMENT w 4 OUTLET PROTECTION TO CHANNEL (OP) 0.3' FREE BOARD q7,)Not To Scale - 2 I Compacted Soil - 1_6 (^�y - - I�1111 18" min. p' o -Flow_ ORIGINAL 1 Z ��++ Fillil GROUND ELEV. q9l 10111111 Milli I W11111 I -milli 112:111111 milli I Willi 110011111 W EL =A Area 2 1.0' 4.5 min. - DRY STORAGE p2 H 67 CU. YD. /ACRE N EL =B Area 1 6 TEMPORARY DIVERSION DIKE DD WETSTORAGE 67 CU. YD. /ACRE C7 Not To Scale D1 FILTER CLOTH ORIGINAL (EXCAVATED) GROUND Ditch Sections Section Lining Channel Channel Channel Side 2 -Yr 10 -Yr DA (Acs.) Wet Vol. (Req.) Depth Width Slope Velocity Depth 1 EC-2 1 484 482.5 1 2 1 1 SCC 1 Matting 1.5 6 2:1 3.9000 0.9000 2 EC-2 500.9 497.9 3.1 1.5 14 SCC 2 Matting 1.5 6 2:1 3.5800 0.6220 3 EC-2 520 516.5 2.75 1.5 3 SCC 3 Matting 1.5 6 2:1 3.1800 1.0420 EC-2 hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air - SCC 4 Matting 1.5 6 2:1 3.9600 0.8600 �� O TYPICAL VEE- SHAPED DIVERSION O v1 O O 11 CLEAN WATER DIVERSION (CWD C7 Not To Scale W EL =C ELEV. *SEE PLATE 3.13 -1 COARSE AGGREGATE CLASS I RIPRAP �- Width - I CROSS SECTION OF OUTLET Matting 1. SET THE STAKES. 2. EXCAVATE A 4 "X 4" TRENCH UPSLOPE ALONG THE LINE OF CLASS I RIPRAP II = -TI�= Depth f I -III e - III -I I !- STAKES. LENGTH (IN FEET) _ =III =� cede III -II- 6 X DRAINAGE AREA I lTf - I- 6'MAX. (IN Ac.) II -III= I =III -I DIVERSION DIKEI�I I II= FLOW/ 1= �® 9 TYPICAL DITCH SECTION DETA L � � 4„ 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT l / ^�- J ' SECURE WIRE MESH TO STAKES AND EXTEND THE EXCAVATED SOIL. ** IT INTO THE TRENCH. COARSE AGGREGATE // TO TIMBER EXCAVATED FILTER CLOTH VDOT #3, #357, #5, #56 OR 6 "X6" TREATED AREA --�'' #57 COARSE AGGREGATE IN TIMBER GALVANIZED WIRE MESH BASKET #5 REBAR TO SECURE WIRE TO GROUND SECURE TIMBER COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 WITH WIRE STAPLES / FLOW f11= OUTLET (PERSPECTIVE VIEW) *FILTER CLOTH GRASS -LINED SWALE Sediment Trap Design Data No. A B C H (ft.) Z (ft.) Weir Length (ft.) DA (Acs.) Wet Vol. (Req.) D1 (ft.) Wet Vol. Cy (Prov.) Dry Vol. (Req.) D2 (ft.) Dry Vol. Cy (Prov. ) 1 485 1 484 482.5 1 2 1 1 0.17 11.4 1.5 11.4 11.4 1 11.4 2 503 500.9 497.9 3.1 1.5 14 2.41 161.5 3.0 162.0 161.5 2.1 166.3 3 521.75 520 516.5 2.75 1.5 3 0.55 36.9 3.5 38.1 36.9 1.75 38.6 jam / /�� /����� / %� /�% \��% 7 MIN. UNDISTURBED 3 SOIL ORGANIC MULCH MATERIALS AND APPLICATION RATES RATES: MULCHES: NOTES: Per Acre Per 1000 s ft q• Straw or Hay 1 - 2 tons 70 - 90 lbs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower or winter cover) by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4 -6" lengths. Air - dried. Do not use in fine turf aeras. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air - dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 1 -2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 2000 lbs. /ac. or 451bs. /1000 sq. ft. Z� 4 Q g z 0 Z U Z Z� � W� 0 � U W W Z� Q 0 � 00 W m W �J Q Date 08/26/2013 POINTS A SHOULD BE HIGHER THAN POINT B. Source: Va. DWSC ca e DRAINAGEWAY INSTALLATION N /A (FRONT ELEVATION) B SEDIMENT TRAP ST 10 LEVEL SPREADER DETAIL (__12M2 ULCHING (MLI) S heet No. 7 SILT FENCE (SF) C% Not To Scale C7 Not To Scale C7 Not To Scaie C7 OF 7 C File No. 7 Not To Scale 13.003