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HomeMy WebLinkAboutWPO201900009 Plan - E&S 2019-06-1917, GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT 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 shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am 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 of 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 approval by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 115% 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 approval by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair 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. Peftman'ent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commences. (Water Protection Ordinance section 17-207B) CONTRACTOR'S COORDINATION RESPONSIBILITIES 1. The contractor is required to obtain any/all permits required for construction of these plans. 2. Any time work is performed off -site or within an existing easement, the contractor is to notify the holder of`'"said easement -as to the nature of proposed work and to follow any guidelines or standards which are associated with or referenced in the recorded easement. 3. The contractor is to check that all easements, letters of permission, etc, are recorded/obtained prior to the start of any construction. 4. Contractor to verify all site plans and profiles and details for consistency and if conflicts exists, contact engineer for clarification and/or direction. Interpretation determined by contractor shall be done at his/her - own risk. 5. The contractor is to verify that the relocation of all existing utilities in conflict with proposed work has been completed including utility poles. 6. Contractor shall comply with fencing and tree preservation signage required by Albemarle county code. 7. Contractor shall not rely solely on electronic versions of plans, specifications, and data files that are obtained from the designers, but shall verify location of project features in accordance with the paper copies of the plans and specifications that are supplied as part of the contract documents. . 8. Contractor shall comply with all wetland permit requirements, if a permit exists. 9. Contractor shall be responsible for all relocations, (unless otherwise noted on plans) including, but not limited to, all utilities, storm drainage, signs, traffic signals & poles, etc, as required. All work shall be in accordance with governing authorities requirements and project sitework specifications and shall be approved by such. All cost shall be included in base bid. 10. Contractor shall control stormwater runoff during construction to prevent adverse impacts to off site areas, and shall be responsible to repair resulting damages, if any, at no cost to owner. 11. This project disturbs more than one acre of land and falls within the Virginia Stormwater Management Program (VSMP), General Construction Permit (GCP) program as administered by the Virginia Department of Conservation and Recreation (DCR) under the jurisdiction of the EPA. Prior to the start of construction, the contractor shall file a GCP notice of intent with the DCR and prepare a stormwater prevention plan in accordance with the VSMP regulations. 12. Contractor shall coordinate with all utility companies for installation requirements and specifications. 13. Contractor shall be responsible for site security and job safety. Construction activities shall be in accordance with OSHA standards and local requirements. 14. Contractor shall dispose of demolition debris in accordance with applicable federal, state and local regulations, ordinances and statutes. 15 Existing utilities shall be terminated, unless otherwise noted, in conformance with local, state and individual utility company standards specifications, and details. The contractor shall coordinate utility service disconnects with the utility representatives. GENERAL CONSTRUCTION NOTES: 1. Prior to any construction within any existing public right-of-way, 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 govern. 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. 4. All slopes and disturbed areas are to be fertilized, seeded and mulched. 5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to be achieved. 6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel. 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. 9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). 10.SL-1 safety slab locations are based on the assumed use of precast structures. if cast -in -place structures are utilized, and the interior chamber dimensions are less than 4 feet, the safety slabs shall not be required. OWNER UNIVERSITY OF VIRGINIA FOUNDATION P.O. BOX 400218 CHARLOTTESVILLE, VA 22904 LEGAL REFERENCE & SOURCE OF TITLE: DEED BOOK 4170, PAGE 689 SITE AREA: 72.90 AC MAGISTERIAL DISTRICT: SAMUEL MILLER SOURCE OF BOUNDARY SURVEY: ALBEMARLE COUNTY GIS SOURCE OF TOPOGRAPHY: ALBEMARLE COUNTY GIS PRIMARY ZONING: R-1 CURRENT USE: VACANT PROPOSED USE: SPOILS AREA VICINITY MAP SCALE: 1" = 1000' ALBEMARLE COUNTY CODE CHAPTER 18 SECTION 5.1.28b BORROW, FILL, OR WASTE AREA REQUIREMENTS FOR AREAS GREATER THAN 10,000 sf 1. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. Before a transporting vehicle leaves the parcel or parcels on which the borrow, fill, or waste area is located, it shall be cleaned so that no inert materials outside of the vehicle's load -bed can be deposited on a public street. 2. The borrow, fill, or waste area and the access roads thereto shall be treated or maintained to prevent dust or debris from blowing or spreading onto adjacent properties or public streets. Depending on the anticipated intensity and duration of the activity and the character of the development of adjoining properties, the program authority may require setback, fencing, and landscaping requirements as deemed appropriate, but which shall not exceed the requirements of section30.4.6, 30.4.7, and 30.4.9 of this chapter. 3. Borrow, fill, or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00 a.m. to 9:00 p.m., except in cases of a public emergency declared pursuant to section 2-1003 of the Code of Albemarle. 4. Borrow, fill, or waste activity shall be conducted in a safe manner that maintains lateral support, in order to minimize hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because of slides, sinking, or collapse. 5. The placement of fill or waste shall be completed within one (1) year of its commencement, except for reclamation activities and any other activities associated with the final stabilization of the area. The program authority may extend the date of completion upon the written request of the applicant, demonstrating thatfactors beyond the control of the applicant prevented the completion within the one-year period. The program authority may then extend the permit for a period of time that, in its sole discretion, is determined adequate to complete the work. 6. In lieu of a plan or narrative, the program authority may accept a conceptual agreement between the Virginia Department of Transportation and its contractor for a public road project; provided that the program authority determines that the agreement satisfies at least to an equivalent extent the requirements and intent of this section. EROSION AND SEDIMENT CONTROL LEGEND F02 CE EONSTRUCTION 13-.03 CRS FRS �ROADCONSTR TABILOIZATION F.05 SF - SILT FENCE ❑TEMPORARY 3.09 DD \ o0 DIVERSION DIKE 3.11 RWD Rw DI PORARY RIGHT-OF-WAY] SION [3.13] SEDIMENT TRAP ST [3. 3 TEMPORARY ES\� N GY TS TS 3.32 P SEEDING PS PS *REFERENCE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH) FOR DETAILS REGARDING INDIVIDUAL CONTROL MEASURES. r <* U ^ 2 rn = L N W Q0 Z zo V �� CC % >LL e- LLTz rcW C/) Q� �? > < V rc c� w U Q OO N rT� Q Q ? Q LO w t1�r. 2 0 U rn , N 0 C-0 o� W� 0� �? I o� J cc DOLL kW WLr) Q O a z 1 0rn �i- m w Z z oW F�1 f I I I I I j it I ; I i. w I ; 1 4 Z O G Q Ilj i E t i I En a U z O I I Z p w o U w I l C G it i I w `9 a I i i I I ; { j I I ! I 11 i Q O I I I I z I I LTH OF v j� DAVID M. ROBINSON Uc. No. 04/23/Iq �`SSIONAL E�� i 0 u' Q z z Q cc d. w J 0 � CIO � �� jr COw T. m zQ LL _JQ w LL Z E- W z> 0E- W Q C-, an U) Wp o C/) L Ir 06 w z 0 W w (� Q 0 v, fr W DATE: 02-22-2019 SCALE: 1 "=50' JOB: FILE: 19.0377 SHEET: OF 02 rAd 1992 3.31 Mulchin 1. Seedings made in fall for winter cover and during hot and dry summer months shall be mulched according to MULCHING, Std. & Spec. 3.35, except that hydromulches (fiber mulch) will not be considered adequate. Straw mulch should be used during these periods. 2. Temporary seedings made under favorable soil and site conditions during optimum spring and fall seeding dates may not require mulch. Re -seeding Areas which fail to establish vegetative cover adequate to prevent rill erosion will be re- seeded as soon as such areas are identified. TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR At.L REGIONS" Rate Planting Dates Species lbs. acre Sept. 1 - Feb. 15 50/50 Mix of Annual Ryegrass (Lolium multi-florum) & 50 - 100 Cereal (Winter) Rye (Secale cereale) Feb. 16. - Apr. 30 Annual Ryegrass 60 - 100 (Lolium multi-florum) May 1 - Aug 31 German Millet 50 (Setaria italica) Source; Va. DSWC III-287 1992 3.32 TABLE 3.32-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA Total Lbs. Per Acre Minimum Care Lawn - Commercial or Residential 175-200 lbs. - Kentucky 31 or Turf -Type Tall Fescue 95-100% - Improved Perennial Ryegrass 0-5% - Kentucky Bluegrass 0-5% High -Maintenance Lawn 200-250 lbs. - Kentucky 31 or Turf -Type Tall Fescue 100% General Slope (3:1 or less - Kentucky 31 Fescue 128 lbs. - Red Top Grass 2 lbs. - Seasonal Nurse Crop * 20 lbs. 150 lbs. Low -Maintenance Slope (Steeper than 3.1) - Kentucky 31 Fescue 108 lbs. - Red Top Grass 2 lbs. - Seasonal Nurse Crop * 20 lbs. - Crownvetch * * 20 lbs. 150 lbs. * Use seasonal nurse crop in accordance with seeding dates as stated below: February 16th through April ...................... Annual Rye May 1st through August 15th .......... .......... Foxtail Millet August 16th through October ....................... Annual Rye November through February 15th ................... Winter Rye ** Substitute Sericea lespedeza for Crownvetch east of Farmville, Va. (May through September use hulled Sericea, all other periods, use unhulled Sericea). If Flatpea is used in lieu of Crownvetch, increase rate to 30 lbs./acre. All legume seed must be properly inoculated. Weeping Lovegrass may be added to any slope or low -maintenance mix during warmer seeding periods; add 10-20 lbs./acre in mixes. III - 303 0 DD Area (Ac) Tc (min) C Value Q10 d10 DD1 2,05 5 0.6 8,32 0.81' Compacted Soil TEMPORARY DIVERSION DIKE (DD), NOT TO SCALE 70' MIN. A FILTER CLOTH A 6" MIN. SIDE ELEVATION GROUND 70' MIN, 8 WASHRACK (OPTIONAL) 12' MIN. VDOT #1 COURSE AGGREGATE * MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION *--"'-POSITIVE DRAINAGE B TO SEDIMENT TRAPPING DEVICE PLAN VIEW FILTER CLOTH —� SECTION A -A REINFORCED CON SECTION 13-13 EXISTING PAVEMENT 1181. MOUNTABLE (OPTIONAL) DRAIN SPACE CONSTRUCTION ENTRANCE DETAIL (CE)_ 3.rA 0r NOT `1'O SCALE CONSTRUCTION OF A SILT FENCE (WITHOUT WIRE SUPPORT) 2. EXCAVATE A 4" x 4" TRENCH 1. SET THE STAKES UPSLOPE ALONG THE LINE OF STAKES. �^ A X �- Ilk gill, I' I' �u 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. POINT A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) SILT FENCE DETAIL (SF) 3.05 Not To Scale TEMPORARY SEDIMENT TRAP CALCULATIONS H Z WEIR DRAINAGE WET VOL. IWET D1 VOL. DRY VOL. D2 DRY VOL. No. A B C (ft.) (ft.) LENGTH (ft.) AREA (Acres) (REQ.) (ft.) (PROV.) (REQ.) (ft.) (PROV.) (CY) (CY) (CY) (CY) 1 544 546 547.E 3.6 3.0 12.2 2,07 139 2.0 149 139 1.6 148 DRY VOLUME ORIGINAL EL = B GROUND ELEVATION 1 Z ORIGINAL GROUND 1.0' ELEVATION H D2 D1 /_.. \ EL = A CROSS SECTION OF OUTLET *NOTE: SEDIMENT TRAP SHALL NOT BE REMOVED BEFORE COUNTY INSPECTOR HAS DEEMED STABILIZED. r`I ACC I PIDRAD FILTER CLOTH \— **COARSE CLASS I AGGREGATE RIPRAP AREA OUTLET (PERSPECTIVE VIEW) **COARSE AGGREGATE SHALL BE VDOT #3, #357, OR #5. SEDIMENT TRAP (ST 3J3 NOT TO SCALE VERSION CE r � U C\J CD rnm N Q Z ❑ Q zCc Cc U �'� > O Laz Q CCW QZ OU jQ �1 C y W W �3 Q -4 2 cc C\1 p(a Urn N co It `J W O O d aywo U � Q Z� W 2rn 4 M V 0)'I w 2 0 O W = i I 4 i � Z W I i i O a O U Z I i j I i (/a z�U U O ;ill O o w i t � W Q i I I I i I ' l LU o j ' I I o j z i TH of D r DAVID M. ROBINSON Llc. No. 5676 [ONAL W O Li- Q z z 0 CL w p 00 m zLL i wo J U U z Q � a ~ W a- W o v w Q 0- U OX �U) W 0 o U) LL fr 06 w z w w _0 C/ O Ir W DATE: 02-22-2019 SCALE: N/A JOB: FILE: 19.0317 SHEET: E2 OF 02