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HomeMy WebLinkAbout63C_StumpHole_erosion_20180129Srawford Date 1-26-18 Reference 63C-LCID Stump Hole Y(CDC# 17032) 1 Contact Amanda Freeman Company NCDEQ Address 225 Green Street, Suite 714 TRANSMITTAL City & State Fayetteville, NC 28301 Subject; Revised Erosion Control Plan — 63C-LCID Stump Hole Amanda, Please find the attached plans and supporting documents including: Attached are the following items for review. • (2) Soil Maps/Information • (2) USGS Topography Maps • (2) Narrative and Calculations If you have any questions, please give me a call at (910) 920-7661. Thank you, Kevin Lindsay, PE LANDSCAPE ARCHITECTURE I ENGINEERING I PLANNING 230C W. Pennsylvania Ave., Southern Pines, NC 2838h Ph: 910-725-1+ Fax: 910-221-0035 SCALE 1:4513 0.0 0.1 Miles 0 100 200 Yards ` MN 8.67° W C 0.0 0.1 0.2 Kilometers Name: CARTHAGE Location: 035' 17' 22.9322" N, 079' 26' 23.7253" W Date: 01/28/18 Caption: <<Type caption here.>> Scale: 1 inch = 376 ft. (C) Copyright 2016, Trimble Navigation Limited STUMP HOLE LANDFILL, 63C-LCID CARTHAGE, NORTH CAROLINA Prepared by: Crawford uesmammy 177 Landscape Architecture * Engineering • Planning Southern Pines, North Carolina January 28, 2018 Sedimentation and Erosion Control Narrative Stump Hole LF 63C-LCID-- Carthage, NC The Stump Hole, south of Carthage, NC, is a Land Clearing and Inert Debris (LCID) Landfill. Changes in land fill geometry have necessitated changes in the erosion control measures for the site. The western portion of the site is not in sue for land filling activities except for placement and windrowing of mulch for soil creation. Silt Fence and Silt Fence Outlets shall be used to control runoff from this activity. The active central and eastern portion of the site shall drain to three Skimmer Basins with Rip Rap Dissipaters on the outlets for erosion control. Debris deposited in these areas shall be mixed with soil and Seeded IAW State requirements. Silt Fence and Diversion Berms/Swales shall be used to direct runoff to the skimmer basins. Temporary Straw Wattle Check Dams shall be used to help protect the swales until grass has matured. The Stump Hole Land Fill is located on a 28.1 acre site. Currently, land fill operations take place on approximately 13 acres. Erosion control measures will include: 1. Gravel Construction Entrance: Installed as shown on the erosion control plan. 2. Sediment Fence: Installed as shown on the erosion control plan. 3. Sediment Fence Straw Wattle Outlets: Installed as shown on the erosion control plan. 4. Skimmer Basin: Installed as shown on the erosion control plan. S. Rip Rap Outlet Protection: Installed as shown on the erosion control plan. 6. Earthen Diversion berms/swales: Installed as shown on the erosion control plan. 7. Straw Wattle Check Dam: Installed as shown on the erosion control plan. 8. Fertilizing, Seeding and Mulching: To be installed as per the temporary seeding specifications. Crawford Project # 17032 Page 2 of 5 January 28, 2018 Sedimentation and Erosion Control Narrative Stump Hole LF 63C-LCID-- Carthage, NC 1 1 Construction General Permit Ground Stabilization Requirements Site Area Description Stabilization Time Stabilization Time Frame Frame Exceptions Perimeter dikes, swales, ditches, 7 Days None and slopes High Quality Water HQ Zones 7 Days None Slopes Steeper than 3:1 7 Days If slopes are 10' of less in length and are not steeper than 2:1; 14 Days are allowed Slopes 3:1 or Flatter 14 Days 7 Days for slopes greater than 50 feet in length All other areas with slopes flatter 14 Days None (except for perimeters than 4:1 and HQW zones * "Extension of time may be approved by the permitting authority based on weather or other site -specific condition that make compliances impracticable." Section II.13 2 b 1. General: All erosion control practices will be checked for stability and operation following every runoff -producing rainfall but in no case less than once every week. Any needed repairs will be made immediately to maintain the integrity and design intention of every erosion control feature. 2. Gravel Construction Entrance: Stabilize and or replace gravel as necessary after a rain event or when gravel become compacted that is no longer effective for minimizing sediments from leaving the site. 3. Sediment Fence: Fencing shall be inspected after rain events and any damaged fencing replaced. Sediment shall be removed from fencing if more than 3 inches accumulates 4. Sediment Fence Straw Wattle Outlets: Outlets shall be inspected after rain events and any damaged wattles or stakes replaced. Rake face of Wattle and remove debris/sediment from face during each inspection. 5. Skimmer Basin: Sediment shall be removed from the skimmer basin when the level of sediment reaches 1.5 feet. 6. Rip Rap Outlet Protection: Stabilize and or replace rip rap as necessary after a rain event or when sediment has filled in rip rap to within 4" of top of rip rap. rawi Con Project # 17032 Page 3 of 5 January 28, 2018 Sedimentation and Erosion Control Narrative Stump Hole LF 63C-LCID-- Carthage, NC 7. Earthen Diversion berms/swales: Berms shall be inspected after rain events and any damaged sections repaired. Identify and immediately repair any wash outs —increasing berm height to prevent future washouts. Inspect swale formed by berm. Note that ground cover must be established on both berm & swale in accordance with NCDEQ requirement shown in Table above. Identify any areas where grass has not been established in a timely manner and reseed. Include straw netting for any areas that have to be reseeded. 8. Straw Wattle Check Dam: Straw Wattles shall be inspected after rain events and any damaged wattles replaced. Sediment shall be removed from wattle if more than 3 inches accumulates. Remove wattles once grass/permanent lining have been established and approved by Engineer. 9. Fertilizing, Seeding and Mulching: All seeded areas will be fertilized, reseeded as necessary, and mulched according to specifications in the vegetation plan to maintain a vigorous, dense vegetation cover. If any seeding failure occurs, those areas shall be reseeded with rye grain for temporary stabilization and prepared for permanent seeding. 1. Construct Construction Entrance. 2. Construct Silt Fence and Straw Wattle Outlets 3. Construct Temporary Skimmer Basin. 4. Construct Rip Rap Dissipaters for skimmer outlets. S. Construct new Diversion Berms/Swales to divert all runoff from active areas to skimmer basins. 6. Construct Straw Wattle Check Dams approximately every 100' in swales until grass/permanent lining have been established. 7. Stabilize all remaining bare areas with Seed and Mulch. Crawford Project # 17032 Page 4 of 5 January 28, 2018 Sedimentation and Erosion Control Narrative Stump Hole LF 63C-LCID-- Carthage, NC Crawford Project # 17032 Page 5 of 5 (�rawford �J l]�J111�JCu 1 ecomp 'J Project Name Location 25- r 271 28 5 ' 100- r 341 30 6.3 ' Stump Hole LCID Landfill Carthage, North Carolina in 1= / H+Tc = Rainfall Intensity (in/hr) 2 year 10 year 25year 5.96 7.29 1 8.21 CoefficientsCalculating Run-off Surface Type Percentages 100 year 1 9.74 Date 12/12/17 Project No. 17054 By KSL Checked By KSL Use Fayetteville 2-yrr 10- r g= 149 226 h= 20 26 P= 2.5 2.9 Time Drainage Area Length of Concentration Drainage Area talc Tc. Height Min 5 Tc= 545 ft 53 ft 2.45 min. 5.00 Min. Trap Unimp. Areas Asphalt Area Concrete Area Gvl/Brick Area Roof inclined Roof Flat <2 % Sandy Soils 2-7 % >7 % <2 % Heavy Soils 2-7 % >7 % Wooded Areas Values 0.35 0.96 0.96 0.85 1.00 0.90 0.15 0.15 0.50 0.20 0.25 0.30 0.15 EXAMPLE 40% 15% 33% 12% SKB-1 0% 0% 0% 100% SKB-2 100 SKB-3 50% 50% SKB-4 SKB-5 SKB-6 SKB-7 SKB-8 Trap Dist. Area Drain. Area Calculating Cc Flows Q2 (cfs) 010 (cfs) Q2s (cfs) 0100 (cfs) Dimensions of Basin at Top of Berm Width Length Skimmer Size (dia.) (inches) Skimmer Head on Skimmer (feet) Sizing Orifice Size (dia.) (.25 in.) Dewater Time (da EXAMPLE 1.50 ac. 1.89 ac. 8.54 9.54 10.95 SKB-1 1.92 ac. 1.92 ac. 0.20 2.29 2.80 3.15 3.74 SKB-2 6.05 ac. 6.05 ac. 0.20 7.21 8.82 9.93 11.78 SKB-2 8.63 ac. 8.63 ac. 0.18 9.00 11.01 12.40 14.71 Trap Side Slope Storage Depth (min 2 ft) Basin Height Trap Dimensions at Surface Sizing of Basin Area Dimensions at Bottom of Basin of Basin Width Len th Width Length EXAMPLE SKB-1 7 2.0 ft 4.0 ft 5 38 ft 32 ft 64 ft ft 14 ft 68 ft 46 ft 46 ft 44 ft 84 ft 76 ft 2.0 in 1.5 in 0.167 ft 0.125 ft 1.50 in 1.50 in 1. 2.07 days 3:1 3:1 SKB-1 3:1 3:1 5 50 ft 100 ft 32 ft 82 ft 62 ft 112 ft 2.0 in 0.167 ft 2.00 in 2.96 days SKB-1 3:1 3:1 5 58 ft 116 ft 40 ft 98 ft 70 ft 128 ft 2.5 in 0.208 ft 2.50 in 2.39 days Trap Req'd SA Storage Provided SA Requirements SA Adjust/ Ok? Required Storage Provided Storage Storage Adjust/ Ok? Weir Length Spillway Flow Depth Weir Spillway Freeboard Sizing Spillway Capacity <Calc Flow Calculated Flow Q10 Weir Adjust/ Ok? EXAMPLE 2,776 sf 2,888 sf Ok 2,700 cf 5,776 cf Ok 9 ft 0.50 ft 1.50 ft 9.55 cfs 8.54 cfs Ok SKB-1 910 sf 2,048 sf Ok 3,455 cf 3,795 cf Ok loft 0.30 ft 1.70 ft 4.93 cfs 2.80 cfs Ok SKB-2 2,865 sf 5,000 sf Ok 10,884 cf 11,193 cf Ok 12 ft 0.40 ft 1.60 ft 9.11 cfs 8.82 cfs Ok SKB-3 3,577 sf 6,728 sf Ok 15,529 cf 15,729 cf Ok 14 ft 0.48 ft 1.52 ft 13.97 cfs 11.01 cfs Ok SKB-4 0 cf 13 ft 0.50 ft SKB-5 0 cf 13 ft 0.49 ft SKB-6 0 cf 7 ft 0.47 ft SKB-7 0 cf 7 ft 0.49 ft SKB-8 0 cf loft 0.50 ft Intensit information tab should be updated per local requirements, current setting is from NOAA website for the project area. indicates example user inputted data, do not delete. indicates user provided data, all else is calculated. NOTES: 1. Weir length sized to pass the peak discharge from the 10 year storm. 2. Surface area is equal to the top of the storage depth. 3. Required Surface Area (SA) is derived by using 325 square feet per cfs based on the Q10 design storm 4. Maximum depth of flow in spillway = 0.5 ft., Maximum constructed depth in spillway = 1.5 ft., and minimum freeboard = 1.0 ft. 5. Time of Concentration typically 5 minutes. 6. Required storage is derived by multiplying the disturbed area by 1800 cubic feet/acre Summary Swale Dimensions Swale # Min Depth ft Bottom Width B-(ft) Top Width (10-yr) Slope Side Slopes-Z (ft) Lining 1 0.27 2 4.16 3.28% 4 Straw w/Tack Coat 2 0.2 2 3.60 1.47% 4 Straw w/Tack Coat 3 0.4 2 5.20 2.19% 4 Straw w/Tack Coat 4 0.43 2 5.44 1.75% 4 Straw w/Tack Coat 5 0.25 2 4.00 2.27% 4 Straw w/Tack Coat 6 0.5 2 6.00 4.31 % 4 S75 Straw w/Net TE PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY SOLUTIONS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 DESIGN STORM: 10 Year Q. = CIA Use Fayetteville 9= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: KIrpich's Equation: Tc = K - (LA3/H)Ao.385 128 A 147 ft Hydraulic Length of watershed (ft) H = 8.5 ft Elevation diff. along "L" (ft) K = 1 Multiplier for flow path conditions Calculated Tc = 1.09 (see HRM supP. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.20 1= g/(H+Tc)= Intensity= 7.29 in/hr Qx: 2.51 cfs DA Acreage= 1.72 Ac. OTE: The velocity of the water entering a maintained veg Swale must be <5 ft/s AXIMUM d = 0.27 ft. A = 0.83 sf lope Condition L(length)= 122 ft. P = 4.23 ft. n = 0.030 (DEHNR, 1993) R = 0.20 ft. B = 2.00 ft. Q = 2.53 cfs Z = 4 : 1 V= 3.04 ft/sec S = 0.0328 H1= 424 ft. W = 4.16 ft. H2= 420 ft. LINING TYPE: LINING Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 0.55 Ib/sf P300 P300 Polypropylene TERMINOLOGY: FINISHED DIMENSIONS: Q, Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) n = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) P550 P550 Polypropylene RR RIPRAP (A,B,1,2) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel, (FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slooe Of Swale Min. Depth 0.27ft. Bottom Width 2.00 ft. Top Width 4.16 ft. Max. Slope 3.28% Side Slopes 4: 1 Lining Straw REFERENCES: (DEHNR, 1988; DEHNR, 1993 Straw w/Tack Coat TE PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY SOLUTIONS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 DESIGN STORM: 10 Year Q. = CIA Use Fayetteville 9= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: KIrpich's Equation: Tc = K - (LA3/H)A0.385 128 L = 210 ft Hydraulic Length of watershed (ft) H = 8 ft Elevation diff. along "L" (ft) K = 1 Multiplier for flow path conditions Calculated Tc = 1.69 (see HRM supp. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.20 1= g/(H+Tc)= Intensity= 7.29 in/hr Qx: 0.92 cfs DA Acreage= 0.63 Ac. OTE: The velocity of the water entering a maintained veg Swale must be <5 ft/s AXIMUM d = 0.20 ft. A = 0.56 sf lope Condition L(length)= 272 ft. P = 3.65 ft. n = 0.030 (DEHNR, 1993) R = 0.15 ft. B = 2.00 ft. Q = 0.97 cfs Z = 4 : 1 V= 1.73 ft/sec S = 0.0147 H1= 424 ft. W = 3.60 ft. H2= 420 ft. LINING TYPE: LINING Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 0.18 Ib/sf P300 P300 Polypropylene TERMINOLOGY: FINISHED DIMENSIONS: Q, Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) n = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) P550 P550 Polypropylene RR RIPRAP (A,B,1,2) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel, (FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slooe Of Swale Min. Depth 0.20 ft. Bottom Width 2.00 ft. Top Width 3.60 ft. Max. Slope 1.47% Side Slopes 4: 1 Lining Straw REFERENCES: (DEHNR, 1988; DEHNR, 1993 Straw w/Tack Coat TE PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY SOLUTIONS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 DESIGN STORM: 10 Year Q. = CIA Use Fayetteville 9= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: KIrpich's Equation: Tc = K - (LA3/H)A0.385 128 L = 368 ft Hydraulic Length of watershed (ft) H = 13 ft Elevation diff. along "L" (ft) K = 1 Multiplier for flow path conditions Calculated Tc = 2.68 (see HRM supp. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.20 1= g/(H+Tc)= Intensity= 7.29 in/hr Qx: 4.41 cfs DA Acreage= 3.02 Ac. OTE: The velocity of the water entering a maintained veg Swale must be <5 ft/s AXIMUM d = 0.40 ft. A = 1.44 sf lope Condition L(length)= 183 ft. P = 5.30 ft. n = 0.030 (DEHNR, 1993) R = 0.27 ft. B = 2.00 ft. Q = 4.44 cfs Z = 4 : 1 V= 3.08 ft/sec S = 0.0219 H1= 424.00 ft. W = 5.20 ft. H2= 420.00 ft. LINING TYPE: LINING Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 0.55 Ib/sf P300 P300 Polypropylene TERMINOLOGY: FINISHED DIMENSIONS: Q, Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) n = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) P550 P550 Polypropylene RR RIPRAP (A,B,1,2) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel, (FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slooe Of Swale Min. Depth 0.40ft. Bottom Width 2.00 ft. Top Width 5.20 ft. Max. Slope 2.19% Side Slopes 4: 1 Lining Straw REFERENCES: (DEHNR, 1988; DEHNR, 1993 Straw w/Tack Coat r , Diversion Temporary DATE 12/12/20 PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY KSL )NIS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 STORM: 10 Year %= CIA Use Fayetteville g= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: Klrplch's Equation: Tc = K - (LA3/H)A0.385 128 L = 560 ft Hydraulic Length of watershed (ft) H = 19 ft Elevation diff. along "L" (ft) K = 1 Multiplier for Flow path conditions Calculated Tc = 3.76 (see HRM supp. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.20 I= g/(H+Tc)= Intensity= 7.29 in/hr Q„: 4.41 cfs DA Acreage= 3.02 Ac. NOTE: The velocity of the water entering a maintained veg swale must be <5 ft/s MAXIMUM d = 0.43 ft. A = 1.60 sf Slope Condition L(length)= 228 ft. P = 5.55 ft. in = 0.030 (DEHNR, 1993) R = 0.29 ft. B = 2.00 ft. Q = 4.59 cfs Z = 4 : 1 V= 2.87 ft/sec S = 0.0175 H1= 424.00 ft. W = 5.44 ft. H2= 420.00 ft. LINING TYPE: LINING Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 0.47 Ib/sf P300 P300 Polypropylene P550 P550 Polypropylene RR RIPRAP (A,B,1,2) ISHED DIMENSIONS: Q„= Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) in = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel,(FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slone Of Swale Min. Depth 0.43 ft. Bottom Width 2.00 ft. Top Width 5.44 ft. Max. Slope 1.75 Side Slopes 4 : 1 Lining Straw Straw w/Tack Coat r , Diversion Temporary DATE 12/12/20 PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY KSL )NIS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 STORM: 10 Year %= CIA Use Fayetteville g= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: Klrplch's Equation: Tc = K - (LA3/H)A0.385 128 L = 640 ft Hydraulic Length of watershed (ft) H = 34 ft Elevation diff. along "L" (ft) K = 1 Multiplier for Flow path conditions Calculated Tc = 3.50 (see HRM supp. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.18 I= g/(H+Tc)= Intensity= 7.29 in/hr Q„: 1.70 cfs DA Acreage= 1.29 Ac. NOTE: The velocity of the water entering a maintained veg swale must be <5 ft/s MAXIMUM d = 0.25 ft. A = 0.75 sf Slope Condition L(length)= 353 ft. P = 4.06 ft. in = 0.030 (DEHNR, 1993) R = 0.18 ft. B = 2.00 ft. Q = 1.82 cfs Z = 4 : 1 V= 2.42 ft/sec Smax = 0.0227 H1= 424.00 ft. W = 4.00 ft. H2= 416.00 ft. LINING TYPE: LINING Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 0.35 Ib/sf P300 P300 Polypropylene P550 P550 Polypropylene RR RIPRAP (A,B,1,2) ISHED DIMENSIONS: Q„= Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) in = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel,(FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slone Of Swale Min. Depth 0.25 ft. Bottom Width 2.00 ft. Top Width 4.00 ft. Max. Slope 2.27 Side Slopes 4 : 1 Lining Straw Straw w/Tack Coat r , Diversion Temporary DATE 12/12/20 PROJECT NAME PROJECT NO Stump Hole LCID Landfill 17054 LOCATION BY Carthage, NC KSL CHECKED BY KSL )NIS: Determine the MAXIMUM velocity, V, through the TYPICAL SECTION Use Trial & Error to make the flow depth, d, result with Q = Q10 STORM: 10 Year %= CIA Use Fayetteville g= 226 h= 26 P= 4.2 in Time of Concentration and Intensity Derivations: Klrplch's Equation: Tc = K - (LA3/H)A0.385 128 L = 458 ft Hydraulic Length of watershed (ft) H = 26 ft Elevation diff. along "L" (ft) K = 1 Multiplier for Flow path conditions Calculated Tc = 2.64 (see HRM supp. p2-4) Tc = 5.00 min. (use 5 as minimum) IA= 0 sf C= 0.18 I= g/(H+Tc)= Intensity= 7.29 in/hr Q„: 9.62 cfs DA Acreage= 7.33 Ac. NOTE: The velocity of the water entering a maintained veg swale must be <5 ft/s MAXIMUM d = 0.50 ft. A = 2.00 sf Slope Condition L(length)= 232 ft. P = 6.12 ft. in = 0.030 (DEHNR, 1993) R = 0.33 ft. B = 2.00 ft. Q = 9.78 cfs Z = 4 : 1 V= 4.89 ft/sec Smax = 0.0431 H1= 426.00 ft. W = 6.00 ft. H2= 416.00 ft. LINING TYPE: LINING S75 Straw Straw Straw w/Tack Coat Shear Stress: T=YDS S75 Straw S75 Straw w/Net T= 1.34 Ib/sf P300 P300 Polypropylene P550 P550 Polypropylene RR RIPRAP (A,B,1,2) ISHED DIMENSIONS: Q„= Peak Discharge for design storm, (CFS) d = Maximum Depth of Water, (FT) V = Trial Velocity, (FPS) in = Manning's "n" Coefficient B = Bottom Width of Channel, (FT) Z = Side Slope of Channel (Z:1) A = Cross -Sectional Area of Flow, P = Wetted Perimeter of the Flow, (FT) R = Hydraulic Radius, (FT) S = Slope of the Channel,(FT/FT) Q = Trial Discharge, (CFS) W = Top Width of Water in Channel, T= Shear Stress in Lb/SF Y= Wt of Water (62.4 Ib/cf) D= Depth Of Flow S= Slone Of Swale Min. Depth 0.50 ft. Bottom Width 2.00 ft. Top Width 6.00 ft. Max. Slope 4.31 Side Slopes 4 : 1 Lining S75 Straw 375 Straw w/Net USDA United States Department of Agriculture NRCS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Moore County, North Carolina January 28, 2018 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nres.usda.gov/wps/ portal/nres/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil Scientist (http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface.................................................................................................................... 2 How Soil Surveys Are Made..................................................................................5 SoilMap.................................................................................................................. 8 SoilMap................................................................................................................9 Legend................................................................................................................10 MapUnit Legend................................................................................................ 11 MapUnit Descriptions.........................................................................................11 Moore County, North Carolina........................................................................ 13 AeD—Ailey loamy sand, 8 to 15 percent slopes ......................................... 13 FaB—Fuquay loamy sand, 0 to 6 percent slopes ....................................... 14 MdD—Mayodan fine sandy loam, 8 to 15 percent slopes ...........................16 References............................................................................................................18 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil -vegetation -landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil -landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil -landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field -observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and 0 Custom Soil Resource Report identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 0 Custom Soil Resource Report 3 Soil Map M i0 8, 641560 641620 641680 641740 641800 641860 641920 35o 17 29" N fi M 350 17' 16" N 641560 641620 641680 641740 641800 641860 3 N Map Scale: 1:2,810 if printed on A landscape (11" x 8.5") sheet. Meters N 0 40 80 160 240 Feet 0 100 200 400 600 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 17N WGS84 9 641980 642040 642100 641920 641980 642040 642100 �O �t 642160 350 17 29" N M 35' 17' 16" N 642160 MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils 0 Soil Map Unit Polygons im 0 Soil Map Unit Lines ■ Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit .4 Gravelly Spot 0 Landfill Lava Flow Marsh or swamp + Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Custom Soil Resource Report MAP INFORMATION A Spoil Area The soil surveys that comprise your AOI were mapped at 1:24,000. Stony Spot Very Stony Spot Warning: Soil Map may not be valid at this scale. Wet Spot Enlargement of maps beyond the scale of mapping can cause Other misunderstanding of the detail of mapping and accuracy of soil .- Special Line Features line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed Water Features scale. - Streams and Canals Transportation Please rely on the bar scale on each map sheet for map �}} Rails measurements. Interstate Highways Source of Map: Natural Resources Conservation Service US Routes Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Major Roads Local Roads Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts Background distance and area. A projection that preserves area, such as the Aerial Photography Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Moore County, North Carolina Survey Area Data: Version 19, Sep 26, 2017 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 13, 2014—Feb 4, 2017 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI AeD FaB Ailey loamy sand, 8 to 15 percent slopes 0.8 16.1 2.9% Fuquay loamy sand, 0 to 6 percent slopes 55.2% MdD Mayodan fine sandy loam, 8 to 15 percent slopes 12.2 41.9% Totals for Area of Interest 29.2 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or 11 Custom Soil Resource Report landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha -Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12 Custom Soil Resource Report Moore County, North Carolina AeD—Ailey loamy sand, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 3thw Elevation: 80 to 750 feet Mean annual precipitation: 38 to 55 inches Mean annual air temperature: 59 to 70 degrees F Frost -free period: 210 to 265 days Farmland classification: Farmland of statewide importance Map Unit Composition Ailey and similar soils: 85 percent Minor components: 7 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Ailey Setting Landform: Low hills Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Crest Down -slope shape: Convex Across -slope shape: Convex Parent material: Sandy and loamy marine deposits Typical profile A - 0 to 4 inches: loamy sand E - 4 to 37 inches: loamy sand Bt - 37 to 53 inches: sandy clay loam Cd - 53 to 80 inches: sandy loam Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: 40 to 80 inches to densic material Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 3.3 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4s Hydrologic Soil Group: B Ecological site: Loamy Backslope Woodland - PROVISIONAL (F137XY006GA) Hydric soil rating: No Minor Components Candor Percent of map unit: 4 percent 13 Custom Soil Resource Report Landform: Low hills Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Crest Down -slope shape: Convex Across -slope shape: Convex Hydric soil rating: No Bibb, undrained Percent of map unit: 2 percent Landform: Flood plains Landform position (two-dimensional): Toeslope Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: Yes Johnston, undrained Percent of map unit: 1 percent Landform: Flood plains Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: Yes FaB—Fuquay loamy sand, 0 to 6 percent slopes Map Unit Setting National map unit symbol: 2wb9c Elevation: 160 to 660 feet Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 59 to 66 degrees F Frost -free period: 220 to 280 days Farmland classification: Farmland of statewide importance Map Unit Composition Fuquay and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Fuquay Setting Landform: I nterfluves Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Linear Parent material: Sandy marine deposits over loamy marine deposits Typical profile Ap - 0 to 7 inches: loamy sand E - 7 to 26 inches: loamy sand Bt - 26 to 37 inches: sandy clay loam 14 Custom Soil Resource Report Btv - 37 to 60 inches: sandy clay loam C - 60 to 80 inches: sandy loam Properties and qualities Slope: 0 to 6 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): high (0.20 to 1.98 in/hr) Depth to water table: About 40 to 72 inches Frequency of flooding: None Frequency of ponding: None Moderately high to Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Low (about 5.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: B Other vegetative classification: Sandy over loamy soils on rises, knolls, and ridges of mesic uplands (G133AA221 FL) Hydric soil rating: No Minor Components Blaney Percent of map unit: 6 percent Landform: Ridges Landform position (two-dimensional): Backslope, shoulder, summit Landform position (three-dimensional): Interfluve, side slope Down -slope shape: Convex Across -slope shape: Convex Hydric soil rating: No Dothan Percent of map unit: 5 percent Landform: Interfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Linear Other vegetative classification: Loamy and clayey soils on rises and knolls of mesic uplands (G133AA321 FL) Hydric soil rating: No Candor Percent of map unit: 4 percent Landform: Marine terraces Landform position (two-dimensional): Landform position (three-dimensional). Down -slope shape: Convex, linear Across -slope shape: Convex, linear Hydric soil rating: No Footslope, summit, shoulder Interfluve 15 Custom Soil Resource Report MdD—Mayodan fine sandy loam, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 3tjs Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 59 to 66 degrees F Frost -free period: 200 to 240 days Farmland classification: Farmland of statewide importance Map Unit Composition Mayodan and similar soils: 85 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Mayodan Setting Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Linear Across -slope shape: Convex Parent material: Residuum weathered from mudstone and/or shale and siltstone and/or sandstone Typical profile Ap - 0 to 6 inches: fine sandy loam BE - 6 to 9 inches: sandy clay loam Bt - 9 to 33 inches: clay BC - 33 to 40 inches: sandy clay loam C - 40 to 80 inches: sandy clay loam Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Sodium adsorption ratio, maximum in profile: 7.0 Available water storage in profile: High (about 9.3 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No 16 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/ nres/detail/national/soils/?cid=nres 142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www. nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/ home/?cid=nres142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 18 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/ nres/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nres142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl 42p2_052290.pdf 19 230C W. Pennsylvania Ave. Southern Pines, NC 28387 Voice 910-725-1107 www.crawforddsn.com Landscape Architecture ♦ Fayetteville Civil Engineering ♦ Southern Pines Crawford Design Company © Copyright 2015 All drawings, specifications and designs prepared by Crawford Design Company are instruments of service and shall remain the property of Crawford Design Company. The Owner or any other parties shall not use the work on this or any project except by a proper agreement and appropriate compensation. SEALS \Cq / �`\ 'NP�� SIIIIIIII��� ,��D D G/y CI��� attil ,,,�QIIIIIIIIIII II ���, QD DES I GN C'I�� NE O \ ER a chi CERT. No. < 2 CERT. No. E _ SEAL C-136 g : i C-2097 g - 027502 2ok ?P 20 \�P CAROV O� i F/yGINE�� P. , ���II1111111►ID�� � ���II1111111111��� A/ //// l l l l l l l l\\\\ �.3v•!8 PLAN SHEET INDEX Sheet Title: Sheet Number: COVER C 0.0 GRADING, DRAINAGE AND EROSION CONTROL PLAN C 3.0 EROSION CONTROL DETAILS C 6.0 EROSION CONTROL DETAILS C 6.1 BCB CORPORATION LCID Landfill MOORE COUNTY, PROPERTY INFORMATION Owner: BCB Development Corporation Property Address / Location: 121 Holly Ridge Road, Carthage, NC 28327 Carthage, Moore County, North Carolina - Erosion Control Plan NORTH CAROLINA Owner / Client Contact: Owner / Client Address: Owner / Client Phone & Email GENERAL NOTES ALL GENERAL NOTES, ABBREVIATIONS, SYMBOLS, AND OTHER INFORMATION INDICATED ON THIS SHEET SHALL APPLIED TO ALL CONTRACT DOCUMENTS AND SHEETS IN THIS SET. 1. THE GENERAL CONTRACTOR SHALL VERIFY AND BE RESPONSIBLE FOR ALL DIMENSIONS AT THE JOB SITE. 2. ALL ELEVATIONS SHOWN ARE IN REFERENCE TO THE BENCHMARK AND MUST BE VERIFIED BY THE GENERAL CONTRACTOR WITH THE SURVEYOR OF RECORD PRIOR TO BEGINNING CONSTRUCTION. TEMPORARY BENCHMARK IS 3. LOCATIONS OF EXISTING UTILITY LINES HAVE BEEN TAKEN FROM UTILITY RECORDS SUPPLEMENTED BY FIELD INSPECTIONS AND SHOULD INDICATE IN GENERAL THE TYPE OF UNDERGROUND FACILITIES NOW IN SERVICE. LOCATIONS SHOWN ARE NOT GUARANTEED. DEVELOPERS OR CONTRACTORS SHALL NOT ONLY MAKE SUBSURFACE INVESTIGATIONS BUT SHALL ALSO ALLOW FOR CONTINGENCIES WHICH MIGHT ARISE BY REASON OF ENCOUNTERING UNRECORDED LINES OR LINES BEING IN DIFFERENT LOCATIONS THAN INDICATED ON THIS PLAN. AT LEAST 48-HOURS PRIOR TO ANY CONSTRUCTION ACTIVITY, EXCAVATION, GRADING, OR DIGGING ON THE SITE, THE GENERAL CONTRACTOR SHALL NOTIFY ALL UTILITY COMPANIES TO VERIFY AND/OR FIELD -LOCATE THEIR RESPECTIVE UTILITIES (THE NORTH CAROLINA ONE CALL CENTER - 1-800-632-4949). ALL DAMAGE INCURRED TO EXISTING UTILITY LINES DURING CONSTRUCTION SHALL BE REPAIRED AT THE GENERAL CONTRACTORS EXPENSE. 4. ALL WASTE MATERIAL SHALL BE LEGALLY DISPOSED OF OFF -SITE. 5. THERE IS AN EXISTING FORMAL EROSION AND SEDIMENTATION CONTROL PERMIT IN PLACE FOR THE SITE, REQUIRED FOR THIS SITE UNDER THE REGULATIONS OF THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES (NCDENR). THE PERMIT IS TO BE MODIFIED IN ORDER TO REFLECT THE CHANGES IN THE EROSION CONTROL DEVICES AND THE LIMITS OF CONSTRUCTION/DISTURBANCE. THE GENERAL CONTRACTOR IS REQUIRED TO AND SHALL FOLLOW ALL LOCAL, STATE AND FEDERAL REGULATIONS TO MINIMIZE EROSION AND THE TRANSPORT OF SEDIMENT OFF -SITE DURING, INCLUDING THE PLACEMENT AND MAINTENANCE OF CONTROL MEASURES. ALL MEASURES REQUIRED SHALL BE INCLUDED IN THE BID COST WHETHER SPECIFICALLY INDICATED OR NOT. 6. ALL CONSTRUCTION TO BE IN ACCORDANCE WITH ALL MOORE COUNTY & STATE REQUIREMENTS. 7. DISTURBED AREAS SHALL BE SEEDED AND STABILIZED PER SPECIFICATIONS. 8. ALL TRAFFIC CONTROL DEVICES, PAVEMENT MARKINGS, SIGNS, AND SIGNALS SHALL BE DESIGNED, INSTALLED AND MAINTAINED IN CONFORMANCE WITH THE STANDARDS SET FORTH IN THE NORTH CAROLINA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES. 9. THESE PLANS INDICATE THE MAJOR DEMOLITION COMPONENTS TO BE REMOVED AND/OR, RELOCATED. HOWEVER, THE CONTRACTOR SHALL DEMOLISH AND/OR RELOCATE ALL MISCELLANEOUS COMPONENTS NOT SPECIFICALLY INDICATED ON THESE PLANS TO PROVIDE A CLEAN SITE FOR THE INSTALLATION OF THE NEW IMPROVEMENTS. 10. BOUNDARY SURVEY AND WETLANDS MAPPING PROVIDED BY OWNER. ADDITIONAL NOTES 1. ALL GENERAL NOTES, ABBREVIATIONS, SYMBOLS, AND OTHER INFORMATION INDICATED ON THE TITLE PAGE SHALL APPLY TO THIS PLAN 2. PURSUANT TO G.S.113A-57(2), THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE THAT CAN BE RETAINED BY VEGETATIVE COVER OR OTHER ADEQUATE EROSION CONTROL DEVICES OR STRUCTURES. IN ANY EVENT, SLOPES LEFT EXPOSED WILL, WITHIN 21 CALENDAR DAYS OF COMPLETION OF ANY PHASE OF GRADING, BE PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUND COVER, DEVICES OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION. PURSUANT TO G.S. 113A-57(3), PROVISIONS FOR PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION MUST BE ACCOMPLISHED FOR ALL DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90 CALENDAR DAYS (WHICHEVER IS SHORTER) FOLLOWING COMPLETION OF CONSTRUCTION OR DEVELOPMENT. ALL SEEDED AREAS WILL BE FERTILIZED, RE -SEEDED AS NECESSARY, AND MULCHED ACCORDING TO SPECIFICATIONS IN THE VEGETATIVE PLAN TO MAINTAIN A VIGOROUS, DENSE VEGETATION COVER. IF ANY SEEDING FAILURE OCCURS, THOSE AREAS SHALL BE RE -SEEDED WITH RYE GRAIN FOR TEMPORARY STABILIZATION AND PREPARED FOR PERMANENT SEEDING. 3. SEE DETAIL SHEETS FOR EROSION CONTROL MEASURES & MAINTENANCE. 4. CONTACT: Kevin lindsay (910)-920-7661 5. PARCEL IDENTIFICATION NUMBER: 96000511 6. CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING EROSION AND SEDIMENTATION CONTROL MONITORING ACCORDING TO NPDES PERMIT REQUIREMENTS. 7. SEE SHEET C6.0 FOR TEMPORARY & PERMANENT SEEDING REQUIREMENTS. EROSION CONTROL CONSTRUCTION SEQUENCE 1. OBTAIN ALL NECESSARY PERMITS AND APPROVALS AND HOLD PRE -CONSTRUCTION CONFERENCE. 2. INSTALL GRAVEL CONSTRUCTION ENTRANCE. 3. INSTALL TEMPORARY SEDIMENT FENCE AND FENCE OUTLETS. 4. INSTALL TEMPORARY SKIMMER BASIN W/ POROUS BAFFLES. 5. CONSTRUCT RIP RAP DISSIPATERS FOR SKIMMER OUTLETS. 6. INSTALL DIVERSION BERMS & ASSOCIATED SWALES TO DIVERT ALL RUNOFF FROM ACTIVE ACTIVE AREAS TO SKIMMER BASINS. 7. CONSTRUCT STRAW WATTLE CHECK DAMS APPROXIMATELY EVERY 100 FT. IN SWALES UNTIL GRASS/PERMANENT LINING HAVE BEEN ESTABLISHED. 8. APPLY SEEDING TO ALL DISTURBED AREAS IAW CHART BELOW. DWQ Construction General Permit Ground Stabilization Requirements Site Area Stabilization Stabilization Description Time Frame Time Frame Exceptions Perimeter dikes, swales, 7 days None ditches and slopes High Quality Water (HQW) 7 days None Zones If slopes are 10' or less in length Slopes steeper 7 days and are not than 3:1 steeper than 2:1, 14 days are allowed 7-days for Slopes 3:1 or 14 days slopes greater flatter than 50 feet in length None (except All other areas for perimeters with slopes 14 days and HQW flatter than 4:1 Zones) "'Extensions of time may be approved by the permitting authority based on weather or other site -specific condition that make compliance impracticable." (Sectio II.13(2)(b)) Charles Boyer - BCB Corporation PIN: 96000511 P.O. Box 837, Southern Pines, NC 28388 910-947-6161 Zoning: RA LEGEND / KEY EXISTING NEW CABLE / TELEVISION C A CA CENTER LINE NOTE BUBBLE (GRADING) CONTOUR LINE 1 00 tl00-y DIVERSION BERM N/A T DB --*-- EASEMENT _ _ _ _ _ _ _ NOTE BUBBLE (SITE) FENCE X X FIBER OPTIC FC- -FO_ NOTE BUBBLE (UTILITY) FORCE MAIN FIVI FM NATURAL GAS G G PLUG LIMITS OF CONSTRUCTION N/A LOC OVER HEAD ELECTRIC C- OE PROPERTY LINE POROUS BAFFLES PROPERTY LINE (ADJACENT) G- N/A RAIL ROAD TRACKS IIIIIIIIIIIIIII RIGHT OF WAY POST INDICATOR VALVE SANITARY SEWER 4 S S SEDIMENT FENCE N/A SF POWER/TELEPHONE POLE SLOPE DRAIN N/A SLUDGE RETURN LINE SR .SR STORM DRAIN 4 SD SD 14 REDUCER / INCREASER SWALE / DITCH LINE TELEPHONE T T RIDGE LINE UNDERGROUND ELECTRIC UE UE WATER W W ROCK PIPE INLET PROTECTION ASPHALT PAVEMENT (STANDARD) SIGNAGE ASPHALT PAVEMENT (HEAVY N/A DUTY TELEPHONE PEDESTAL CONCRETE GRASS ISOD N/A TREE/SHRUB GRAVEL C TRENCH DRAIN GRAVEL CONST. ENTRANCE PAVERS SEDIMENT TRAP SOIL VELOCITY DISSIPATION / RIP RAP PROTECTION WETLAND AREA ACCESSIBLE RAMP AREA LIGHT BACK FLOW PREVENTION ASSEMBLY BEND BLOCK & GRAVEL INLET PROTECTION CHECK DAM CLEAN OUT CURB & GUTTER CURB & GUTTER (SPILL OFF) CURB INLET DROP INLET DUMPSTER UNIT ELECTRICAL TRANSFORMER FIRE HYDRANT ASSEMBLY FLARED END SECTION GAS METER GAS VALVE GRADE BUBBLE (TOP -ELEVATION) GRADE BUBBLE (FINISH -GRADE) GUY WIRE HARDWARE CLOTH & GRAVEL HEAD WALL JUNCTION BOX LIFT STATION MAN HOLE NOTE BUBBLE (DEMOLITION) N/A ...................................................... WATER METER / VAULT WATER VALVE N/A WHEEL STOP YARD INLET C EXISTING NEW N/A N/A O N/A O ++++++++y+y++++ + + LJ N/A IT N/A -"-< 0 0 -cr-- IIIIIIIIIIIIIIIIII� °varies E: O 0_1 1 ��� PROJECT EROSION CONTROL MEASURES 'J TEMPORARY SEDIMENT FENCE N/A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE N/A J L- TEMPORARY SKIMMER BASIN WITH POROUS BAFFLES N/A TEMPORARY DIVERSION SWALE N/A N/A TEMPORARY SEDIMENT TRAP WITH POROUS BAFFLES N/A N/A M N/A ' TREE PROTECTION FENCE N/A SILT FENCE OUTLET N/A e TEMPORARY HARDWARE CLOTH & GRAVEL INLET N/A PROTECTION N/A VELOCITY DISSIPATION / RIP RAP PROTECTION N/A ifi ROCK PIPE INLET PROTECTION N/A 0 LIII T IrN W 100.00 + 100.00 + 100.00 100.00 N/A� 0 0 0 N/A ❑� NEW -SF� DB I I I TF ILF11`7J N 00 a-� 00 Q) N c`nn M O N 5 Z O Q _ U O= 4-J NO C:OLOZ..L. U , C OZ •,^ Z) v 1 O C) L. U L1111111 w 1 � O Ot• � T 0 ::F LU � QV/ U ._I U �ff KEY NOTES GRADING / EROSION CONTROL NOTES 0 INSTALL TEMPORARY SEDIMENT FENCING (SEE DETAIL 6.0.1). Q INSTALL SILT FENCE OUTLET (SEE DETAIL 6.0.7) Q INSTALL GRAVEL CONSTRUCTION ENTRANCE (SEE DETAIL 6.0.2). CONTRACTOR SHALL REPAIR ANY DAMAGE TO THE EXISTING PAVEMENT RELATED TO CONSTRUCTION ACTIVITY. Q INSTALL SKIMMER BASIN (SEE DETAIL 6.0.8, 6.1.1,2) 1 INSTALL VEGETATED SWALE AS (SEE DETAIL 6.1.5) INSTALL STRAW WATTLE CHECK DAM (SEE DETAIL SHEET 6.1.3) Q INSTALL DIVERSION BERM & SWALE (SEE DETAIL 6.1.4, 5) Q INSTALL RIP RAP DISSIPATER (SEE DETAIL 6.0.9) lRF=43358' to, 0 N/F Gill DB 536, Pg 703 113 7° 12' 7T Crawford Design Company © Copyright 211 — All drawings, specifications and designs prepared by Crawford Design Company are instruments of service and shall remain the property of Crawford Design Company. The Owner or any other parties shall not use the work on this or any project except by a proper agreement and appropriate compensation. 109 112 T14'12 IPF-446. 67 S87` 14' 15 12' x 50' S87° 14' 15 "W7-7 28 .73 �38 IRF—Z37.56 N87° 1515'00 � 0'Y') Fill Limits of Landfill as determined by 100' Boundary Limit and 50' Wetlands Limit S87' 18 ------ I CONSTRUCTION _ - - ENTRANCE -- _—REV C13 CD \ Z \ \ \ \ -fl -- -7 / / �- \ \ _ _ - / /4. -------------- \ I —434' 432 \\ \ 426' Mulch Windrow Area \ \ for Soil Creation 460440' U I I I I I I / cnn Swale 6 462' 64' v 46 434'1466' 4324�468' 3041\ I III �� z 426 i \ \ \ I / � 5 0 I o Silt Fence I I I I / N \ I Mulch Windrow Area III I I I I kti� FEx—is ting� \ 11 \ �\ �� I o �- \ for So'l Creation I I ISedimentl \ \ \ \ \ J I I I I Lasin— I Silt Fence _ -Rise - \�8-" CMP \ I I I /�--�/ co \ 2 // / / / / / / / _� 426 \ 432' 'T JS \ 2 /R5 / / / / 430' / 771 - - �-1 \� Silt Fence Outlet Sedi ng ISdmentl basin ° \ \\\ \\ \ / / / / \ \/ i 11 424 IV 1 CMP Rise \\ \ \\ \\ \ 6 6 / // \/ / / ` �� //Xz/ SF Swale 2 \ �,8 \ 0 \ \\ \\ \\ \\ \\\\ �� �� �� Swale 3 ISeldlmgnt \\ \\\\\ \\\\ , /// G/ Basin \ E8�r. MP Riser - L 18 CMP Rise Existing 05 Un ISedlmentl I \ \\ \ n Q6 h � Lasln— J \ CD \ \ \\ ✓ / /� / 14, o 62 �1 ti 424' — — Si— F� SF — SF — N F �� _ 6 �� ---- S 0 / V avis DB 1104, Pg 371 G Swale 1—�/ Swale 5 0 Swale 4 Skimmer Basin 3 _ Y Y , I i i> k (129' x 70') INACTIVE PORTIO OF LAND FILL, EXCEPT FOR SOIL CREATION FROM MULCH - NO ADDITIONAL FILL Skimmer Basin 1 (76' x 44') DA"W'3� Fill Limits of Landfill as determined by 100' Boundary Limit and 50' Wetlands Limit Skimmer Basin 2 (112' x ii Landscape Architecture ♦ Fayetteville, NC Civil Engineering ♦ Southern Pines, NC 230C W. Pennsylvania Ave. ♦ Southern Pines, NC 28387 Voice: 910-725-1107 w w w. c r a w f o r d d s n. c o m �0`,,\\►IIIIIIIIII�j�`,�\\\IIIIIIIIII���I o p E S I GN I OO�i o E s 1 GN 0 � AFr4 T� c°�A�= ��,oe \NEER/%, CO�A�' Q �" i Q �� `per 7 6 CERT. No. CERT. No. E G136 C-2097 i . 1 cAR°`CARD\'\ A �IIILS , ,``,,,, ,��� IIIII- , IIIII11111111,100 I,,,,,,, SEALS ��Jl;eSIEAL 9� _ 027502 = NGINS '''�II►II1►1�`3v�8 REVISIONS z aQ /J Z Ii J0 J OW �a Z= O� V � 0 ZZ Z O _ Z Q —� C/) Q J H Oz W CL 0 J WU Q O 1 W Z DC � O Q z Z.0 O O�� p oZ� � Z i O 0J= Cn O VVQ o� J U C' W PROJECT DETAILS Project Manager: KSL CAD Technician: RFN/GER Reviewed / Approved By: KSL Project Number: 17032 SCALE 0 60 120 Full Scale: Horiz.: 1" = 60' HMwleldriorizp Vi;p620' ISSUE DATE 02/03/2018 SHEET NUMBER 11 14 Steel Post (TypI Top Strand-, Min. 10 Gauge Line Wires Min. 12.5 Gauge Bottom Strand-, Min. 10 Gauge �I I IIIIIIIIIIIIIIIIIIIIIIIIIII-III II I I I I1 I I1 I I1 I I I I I=� I I1 I I1 I I I I I1 I I1 I I I 11= II1� =III III ELEVATION VIEW N.T.S. Steel Post Filter Fabric 1 Fill Slope N 4„ ,roun Line II I ' -III I1 11= I c -III III, 1' Anchor Fabric - Skirt wl Backfill OPTION ONE N.T.S. Anchor Fabric Skirt w/ Gravel Backfill V-Trench OPTION TWO N.T.S. THE FOLLOWING WAS TAKEN FROM THE STATE OF NORTH CAROLINA'S EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL TABLE 6.10b TEMPORARY SEEDING RECOMMENDATIONS FOR SUMMER SEEDING MIXTURE: SPECIES: GERMAN MILLET RATE : 40lb/acre SEEDING DATES: MOUNTAINS: MAY. 15 -AUG. 15 PIEDMONT: MAY. 1 -AUG. 15 COASTAL PLAIN: APR. 15 - AUG. 15 SOIL AMENDMENTS: FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 lb/acre GROUND AGRICULTURAL LIMESTONE AND 750 lb/acre 10-10-10 FERTILIZER. MULCH: APPLY 4,000 lb/acre STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. MAINTENANCE: REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTILZE AND MULCH IMMEDIATELY FOLLOWING EROSION OR OTHER DAMAGE. PORARY SEEDING SPECIFICATION - SUMMER Construction Specifications - Materials: 1. Use a synthetic filter fabric of at least 95% by weight of polyclefins or polyester, which is certified by the manufacturers or supplier as conforming to the requirements in ASTM D6461, which is shown in part in Table 6.62b of the North Carolina Erosion and Sedimentation Control Design Manual. Synthetic filter fabric should contain .......... .............. ultraviolet ray inhibitors and stabilizers to provide a minimum of 6 months of expected usable construction life at a temperature range of 0 of 1207. 2. Ensure that posts for sediment fences are 1.33 lb/linear ft. steel with a minimum length of 5 feet. Make sure that steel posts have projections to facilitate fastening the 50' Min. fabric. 3. for reinforcement of standard strength filter fabric, use wire fence with a minimum 14 gauge and a maximum mesh spacing of 6 inches. 2-3" Coarse Aggregate Construction Specifications - Construction: o 1. Construct the sediment barrier of standard strength or extra strength synthetic filter fabrics. o 0 2. Ensure that the height of the sediment fence does not exceed 24 inches above the round surface. (Higher fences may impound volumes of water sufficient to cause 9 9 ( 9 Y p failure of the structure). o 0 0 0 0 0 0 3. Construct the filter fabric from continuous roll cut to the length of the barrier to avoid joints. When joints are necessary, securely, fasten the filter cloth only at support post with 4 feet minimum overlap to the next post. 4. Support standard strength filter fabric by wire mesh fastened securely to the upslope side of the posts. Extend the wire mesh support to the bottom of the trench. Fasten the wire reinforcement, the fabric on the upslope side of the fence post. Wire or plastic zip ties should have minimum 50 pound tensile strength. 5. When a wire mesh support fence is used, space posts a maximum of 8 feet apart. Support posts should be driven securely into the ground a minimum of 24 inches. 6. Extra strength filter fabric with 6 feet post spacing does not require wire mesh support fence. Securely fasten the filter fabric directly to posts. Wire or plastic zip ties ` should have a minimum 50 pound tensile strength. 7. Excavate a trench approximately 4 inches wide and 8 inches deep along the proposed line of posts and upslope from the barrier (Figure 6.62a, North Carolina ErosionZQ and Sedimentation Control Design Manual) o 8. Place 12 inches of the fabric along the bottom and side of the trench. 9. Backfill the trench with soil placed over the filter fabric and compact. Thorough compaction of the backfill is critical to silt fence performance. D D Installation Specifications: 1. The base of both end posts should be at least one foot higher than the middle of the fence. Check with level if necessary. Public Road or 2. Install posts 4 feet apart in critical areas and 6 feet apart on standard applications. Site Access ............ ............ 3. Install posts 2 feet deep on the downstream side of the silt fence, and as close as possible to the fabric, enabling posts to support the fabric from the upstream water pressure. PLAN VIEW 4. Install posts with the nipples facing away from the silt fabric. N.T.S. 5. Attach the fabric to each post with three ties, all spaced within the top 8 inches of the fabric. Attach eat tie diagonally 45 degrees through the fabric, with each puncture at least 1 inch vertically apart. Also, each tie should be positioned to hang on the post nipple when tightened to prevent sagging. 6. Wrap approximately 6 inches of fabric around the end posts and secure with 3 ties. 2-3" Coarse Aggregate 7. No more than 24 inches of a 36 inch fabric is allowed above ground level. 8. The installation should be checked and corrected for any deviations before compaction. 9. Compaction is vitally important for effective results. Compact the soil immediately next to the silt fence fabric with the front wheel of the tractor, skid steer, or roller - exerting at least 60 pounds per square inch. Compact the upstream side first, and then each side twice for a total of 4 trips.to Maintenance: _III -III I�I-III Sub -Grade Inspect sediment fences at least once a week and after each rainfall. Make any required repairs immediately. Should the fabric of a sediment fence collapse, tear, A -A SECTION VIEW decompose, or become ineffective, replace it promptly. Remove sediment deposits as necessary to provide adequate storage volume for the next rain and to reduce pressure N.T.S. on the fence. Take care to avoid undermining the fence during cleanout. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it after the contributing drainage area has been properly stabilized. 5 THE FOLLOWING WAS TAKEN FROM THE STATE OF NORTH CAROLINA'S EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL TABLE 6.10c TEMPORARY SEEDING RECOMMENDATIONS FOR FALL SEEDING MIXTURE: SPECIES: RYE (grain) RATE : 120lb/acre SEEDING DATES: MOUNTAINS: AUG. 15 - DEC. 15 COASTAL PLAIN AND PIEDMONT: AUG. 15 - DEC. 30 SOIL AMENDMENTS: FOLLOW SOIL TESTS OR APPLY 2,000 lb/acre GROUND AGRICULTURAL LIMESTONE AND 1,000 lb/acre 10-10-10 FERTILIZER. MULCH: APPLY 4,000 Ib/acre STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. MAINTENANCE: REPAIR AND REFERTILIZE DAMAGED AREAS IMMEDIATELY. TOPDRESS WITH 50 lb/acre OR NITROGEN IN MARCH. IF IT IS NECESSARY TO EXTEND TEMPORARY COVER BEYOND JUNE 15, OVERSEED WITH 50 lb/acre KOBE (PIEDMONT AND COASTAL PLAIN) OR KOREAN (MOUNTAINS) LESPEDEZA IN LATE FEBRUARY OR EARLY MARCH. TION - F 2 Construction Specifications: 1. Clear the entrance and exit area of all vegetation, roots, and other objectionable material and properly grade it. 2. Place the gravel to the specific grade and dimensions shown on the plans and smooth it. 3. Provide drainage to carry water to a sediment trap or other suitable outlet. 4. Use geo-textile fabrics because they improve stability of the foundation in locations subject to seepage or high water table. Maintenance: 6 C Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction site. This may require periodic top dressing with 2-inch stone. After each rainfall, inspect any structure used to trap sediment and clean it out as necessary. Immediately remove all objectionable materials spilled, washed, or tracked onto public roadways. PERMANENT SEEDING SPECIFICATION (APPLIES TO ALL DISTURBED AREAS THAT ARE NOT SODDED) SEEDING MIXTURE: SPECIES: RATE (lb/acre): COMMON BERMUDA GRASS (HULLED) 40-80 (1-2 Ib/1,000 sf) SEEDING DATES: 1. COASTAL PLAIN: APR. - JULY 2. PIEDMONT: APR. 15 - JUNE 30 SOIL AMENDMENTS: APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 3,000 lb/acre GROUND AGRICULTURAL LIMESTONE AND 500 lb/acre 10-10-10- FERTILIZER. MULCH: USE JUTE, EXCELSIOR MATTING, OR OTHER EFFECTIVE CHANNEL LINING MATERIAL TO COVER THE BOTTOM OF CHANNELS AND DITCHES. THE LINING SHOULD EXTEND ABOVE THE HIGHEST CALCULATED DEPTH OF FLOW. ON SLOPES NOT REQUIRING TEMPORARY LININGS, APPLY 4,000 lb/acre GRAIN STRAW AND ANCHOR STRAW BY STAPLING NETTING OVER THE TOP. MULCH AND ANCHORING MATERIALS MUST NOT BE ALLOWED TO WASH DOWN SLOPES WHERE THEY CAN CLOG DRAINAGE DEVICES. MAINTENANCE: A MINIMUM OF 3 WEEKS IS REQUIRED FOR ESTABLISHMENT. INSPECT AND REPAIR MULCH FREQUENTLY. REFERTILIZE THE FOLLOWING APR. WITH 50 lb/acre NITROGEN. PERMANENT SEEDING SPECIFICATION - 7CP 6" Depth - Surface to Spillway Woven Geosynthetic (Allows for Settlement) Fabric Over Spillway 5' Wide SVZpillway Weir (ST) Porous Baffles Total Depth (TD) Max. 6" Flow Depth Fin. Grade (Typ) Inflow - (Piped or Sheet Flow) Storage Surface S (See Detail)() Storage Depth (SD) l' Min. Freeboard Top of Dam (T) I Height of Skimmer Basin - Skimmer Dewatering 2' 2'- - = Device (See Detail) Stake to mark level Calculated Flow - Maximum 6" ip-Rap Protection of sediment - half full w/ Filter Fabric maintenance required IIICompacted Earthen Dam IIIIIIIIIIIIIIIIIIIIIIIIIIII I _ 2 III- 2 U­ 11 Q 1 . 1 - I I 1� I C I I~% I I I I I � II I III -III IIIIIIIIIIIIIIIIIIIIIIIIIII Storage IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Sediment StoZDneJIII-IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I- g Stacked Concrete Blocks for Skimmer III ;IIIIIIIII-III IIIIIIIIIIIIIIIIIIIIIIIIIII-III III -III during no rain timeframe - To be stacked III -III- -IIIIIIIIIIIIIIIIII,III I_ above Sediment Storage Zone Bottom Elevation (B) III . IIIIIIIII - To Outlet Protection SEDIMENT BASIN - TYPICAL SECTION N.T.S. C t OnS cf S f' t' M' t 1. nl ion E.Cl ICa ions. Site preparations - Clear, grub, and strip topsoil from areas under the embankment to remove trees, vegetation, roots, and aln.nanC.. Inspect temporary skimmer basins at least weekly and after each significant (1/2-inch or other objectionable material. Delay clearing the pool area until the dam is complete and then remove brush, trees, and other greater) rainfall event and repair immediately. Remove sediment and restore the basin to its objectionable materials to facilitate sediment cleanout. Stockpile all topsoil or soil containing organic matter for use on the outer 1 p p 9 99 original dimensions when it accumulates to one-halk the design depth. Place removed p shell of the embankment to facilitate vegetative establishment. Place temporary sediment control measures below basin as 9 P ry sediment in an area with sediment controls. needed. 2. Embankment - Take fill material from the approved areas shown on the plans. It should be clean mineral soil, free of roots, Check the embankment, spillways, and outlet for erosion damage, and inspect the woody vegetation, rocks and other objectionable material. Scarify areas on which fill is to be placed before placing fill. The fill embankment for piping and settlement. Make all necessary repairs immediately. Remove all material. must contain sufficient moisture so it can be formed by hand into a ball without crumbling. If water can be squeezed out trash and other debris from the riser and pool area. of the ball, it is too wet for proper compaction. Place fill material in 6 to 8 inch continuous layers over the entire length of the fill area and compact it. Compaction may be obtained by routing the construction hauling equipment over the fill so that the entire Top of Spillway Elev. surface of each layer is traversed by at least one wheel or tread track of heavy equipment, or a compactor may be used. Top of Dam Elev. Woven Geosynthetic Construct the embankment to an elevation 10 percent higher than the design height to allow for settling. (See Table) Fabric Over Spillway 3. Emergency Spillway - Install the emergency spillway in undisturbed soil. The achievement of planned elevations, grade, Length design width, and entrance and exit channel slopes are critical to the successful operation of the emergency spillway. (LW) 4. Inlets - Discharge water into the basin in a manner to prevent erosion. Use diversions with outlet protection to divert sediment -laden water to the upper end of the pool area to improve basin trap efficiency (References: Runoff Control Measures x and Outlet Protection). - urface Area 5. Erosion Control - Construct the structure so that the disturbed area is minimized. Divert surface water away from bare areas. III - III Elevation - 6" Complete the embankment before the area is cleared. Stabilized the emergency spillway embankment an all other disturbed - - Below Spillway areas above the crest of the principal spillway immediately after construction. (References: Surface Stabilization). EMERGENCY SPILLWAY CROSS SECTION 6. Install porous baffles as specified in Practice 6.65, Porous Baffles. N.T.S. 7. Safety - Skimmer basins may attract children and can be dangerous. Avoid steep side slopes, and fence and mark basin with warning signs if trespassing is likely. Follow all state and local requirements. Basin Data Item TSB-1 TSB-2 TSB-3 Drainage Area (AC) 1.92 6.05 8.63 Surface Area Width (ft) 32 50 58 ,000 Surface Area Length (ft) 64 100 116 c Storage Depth (ft) [SD] 3 3 3 2 o Top of Storage Elev. (msl) 420 420 416 IS] Bottom of Basin Elev. (msl) 417 417 413 [B] Top of Berm Elev. (msl) M 422 422 418 `o Top of Berm Width (ft)** 44 62 70 € Top of Berm Length (ft)** 76 112 128 Side Slope (h-ft : v-ft) 3:1 3:1 3:1 Spillway Weir Elev (msl) 420 420 416 2 [SW] eoi Weir Length (ft) [LW] 10 12 14 Skimmer Diameter (in) 1.5 2 2.5 Skimmer Orifice Diameter 1.5 2 2.5 (in) * Basin designed to provide 1,800 CF of storage per acre of drainage area and 325 SF/CFS of Ten Year Storm inflow (Q10). **Measured from inside of berm to inside of berm. 9 111111111111111111 Compacted SECTION VIEW NTS. Varies (See Grading Plan) 2 1� Underlayment Construction Specifications: 1. Clear the foundation area of trees stumps, roots loose rock and other objectionable material. p, 1 2. Excavated the cross section to the lines and grades of the foundation of the liner as shown on the plans. Bring over -excavated areas to grade b 9 p 9 9 Y increasing the thickness of the liner or by backfilling with moist soil compacted to the density of the surrounding material. 3. Place filters, beddings, and foundation drains to line and grade in the manner specified.. Place filter and bedding materials immediately after slope preparation. For synthetic filter fabrics, overlap the downstream edge by at least 12 inches with the upstream edge which is buried a minimum 12 inches in a trench. Space anchor pins every 3 feet along the overlap. spread granular materials in a uniform layer. When more than on gradation is required, spread the layers so there is minimal mixing. Filter material should consist of a least 3 inches of material on all sides of the drain pipe. 4. Perform all channel construction to keep erosion and water pollution to a minimum. Immediately upon completion of the channel, vegetate all disturbed areas or otherwise protect them against soil erosion. Where channel construction will take longer than 30 days, stabilize channels by reaches. Inspect channels at regular intervals as well as after major rains, and make repairs promptly. Give special attention to the outlet and inlet sections and other points where concentrated flow enter. Carefully check stability at road crossing, and look for indications of piping, scour holes, or bank failures. Make repairs immediately. Maintain all vegetation adjacent to the channel in a healthy, vigorous condition to protect the area from erosion and scour during out -of -bank flow. THE FOLLOWING WAS TAKEN FROM THE STATE OF NORTH CAROLINA'S EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL TABLE 6.10a TEMPORARY SEEDING RECOMMENDATIONS FOR LATE WINTER & EARLY SPRING SEEDING MIXTURE: SPECIES: RYE (grain) ANNUAL LESPEDEZA (KOBE IN PIEDMONT AND COASTAL PLAIN, KOREAN IN MOUNTAINS) RATE 1201b/acre 501b/arc. "OMIT ANNUAL LESPEDEZA WHEN DURATION OF TEMPORARY COVER IS NOT TO EXTEND BEYOND JUNE. SEEDING DATES: MOUNTAINS: ABOVE 2500 FT: FEB. 15 - MAY. 15 BELOW 2500 FT: FEB 1 - MAY 1 PIEDMONT: JAN.1 MAY.1 COASTAL PLAIN: DEC. 1 APR. 15 SOIL AMENDMENTS: FOLLOW SOIL TESTS OR APPLY 2,000 lb/acre GROUND AGRICULTURAL LIMESTONE AND 750 lb/acre 10-10-10 FERTILIZER MULCH: APPLY 4,000 lb/acre STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. MAINTENANCE: REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTILIZE AND MULCH IMMEDIATELY FOLLOWING EROSION OR OTHER DAMAGE. 3 I 1 QVII-*VRHRT JCCUIIVV orrzk irikem i IVIV - nI AI C SECTION VIEW N.T.S. Sedii PROFILE VIEW FROM SLOPE NTS. Construction Notes: 1. Use a minimum 12" diameter wattle with a minimum length of 10 ft. 2. Excavate a 1" to 2" trench for wattle to be placed. 3. Use 2" x 2" x 2 ft. long wooden stakes. 4. Install a minimum of 2 upslope and 4 downslope stakes at an angle to wedge the wattle to the ground. 5. Provide staples made of 0.125" diameter steel wire formed into a "U" shape and not less than 12" length. 6. Install staples approximately every 12" on both sides of wattle and at each end to secure it to the soil. 7. Wattle installation can be on outside of the silt fence as directed. 8. Install temporary sediment fence in accordance with NCDENR regulations. 9. Outlets to be placed as shown on plans along silt fence. Maintenance Notes: 1. Inspect outlets at least weekly and after each significant (1/2" or greater) rainfall event. 2. Clear the outlet of any debris or other objects to provide adequate flow for subsequent rains. 3. Take care not to damage or undercut the outlet during sediment removal. 4. Replace wattle as needed. 7 SEDILMENT FENCE w/ STRAW WATTLE OUTLET p o A -A General Notes: M 1. " L " is the length of riprap apron. 2. " X " equals 1.5 times the maximum stone diameter but not p less than 6-inches. 3. In a well-defined channel extent the apron up the channel PLAN VIEW - Pipe Outlet to Flat Area (No Well-defined Channel) banks to an elevation of 6-inches above the maximum N.T.S. tailwater depth or the top of the bank, whichever is less. (L) 4. A filter blanket or filter fabric should be installed between the riprap or soil foundation. Filter Blanket op o ii o - - 111-III-III III -III -III_ I -III -III-I � I � I -III -III - I� 1-1 11-1 11-1 I, 1-1 1-11 1.. I� A -A SECTION VIEW - Pipe Outlet to Flat Area (No Well-defined Channel) N.T.S. PLAN VIEW - Pipe Outlet to Well-defined Channel B-B SECTION VIEW - Pipe Outlet to Flat Area (No Well-defined Channel) N.T.S. Landscape Architecture ♦ Fayetteville, NC Civil Engineering ♦ Southern Pines, NC 230C W. Pennsylvania Ave. ♦ Southern Pines, NC 28387 Voice: 910-725-1107 w w w. c r a w f o r d d s n. c o m O E,,,��I►IIIIIIIIII�j�i ,,,�IUIIIIO►II���i A�1 o,�,,Ge �,�QO�O N co Q 7 i: Q 2a9' 7 i 0 CERT. No. < C o C CERT. No. ? N C-136 C-2097 g F � P OR rh 0� CA0.C2ry CARO1\�P e®0 EV LL SEALS ```�11111111/// \N CAR. SEAL 9� _ 027502 LNG I S. REVISIONS Z as 7 /J Ii J J 0� �a z= OF- UW 0 zZ O WO W U I W J O O zJ . O 0 LL M }i V oZ� aQa o-�= U 0 F- ■O � m-� O m J W PROJECT DETAILS Project Manager: KSL CAD Technician: RFN/GER Reviewed / Approved By: KSL Project Number: 17032 SCALE ISSUE DATE 02/03/2018 SHEET NUMBER C6,00 Support Post CV SECTION VIEW N.T.S. Sediment Fence Baffle (Coir Mesh or Similar, Stapled Basin Bo a INLET PLAN VIEW N. TS, POROUS BAFFLES (1 of 2) ninT Tn cr n 1 o affle Material 11 Gaug Landscaping Staple o o 0 0 0 1 o 0 0 III � III-IIIi IIIIIIIIIIII-III =III I IIII I IIIII I I I IIIIIIIIIIIII I I- Steel Post 2'-0" Depth Baffle Material should be secured to the bottom and sides of Basin using 12"" landscape staples POROUS BAFFLES (2 of 2 Over -cut channel 2" to allow for bulking during seedbed preparation Overlap 6" min. & anchor w/ pin or staple (Typ.) Excavate channel to grade & cross -sec C � Q i 0 JfLET Drape Baffle material over wire strand and secure with plastic ties at Posts and on wire every 12 inches. 9 Gauge min. High - Tension Wire Strand shall be secured to Post to support Baffle material Anchor Trench II I T -III_ II �IIII; tolled Erosion Control Product (RECP, Sod or Seed Mulch) (See Chart this Page) Typical installation with Erosion Control Blankets or Turf Reinforcement Mats INTERMITTENT CHECH SLOT Shingle -lap spliced ends nr hcnin now r 11 In nn III III III ��' LONGITUDINAL ANCHOR TRENCH I 'Il III III Construction Specifications 1. Grade the basin so that the bottom is level front to back and side to side. 2. Install posts across the width of the sediment trap (See Practice 6.62, Sediment Fence, Erosion & Sedimentation Control Planning & Design Manual). 3. Steel posts shall be driven a minimum depth of 24-inches, spaced a maximum of 4-ft apart, and installed up the sides of the basin as well. The top of the fabric should be 6-inches high than the invert of the spillway. Tops of baffles should be 2-inches lower than the top of the berms. 4. Install as least three rows of baffles between the inlet and outlet discharge point. Basins less than 20-ft in length may use two baffles. 5. Add a support wire or rope across the top of the measure to prevent sagging. 6. Wrap porous material, (700g/m2 coir erosion blanket, (figure 6.65c) or equal) over top wire. The fabric should have five to ten percent openings in the weave. Attach fabric to a rope and a support structure with zip ties, wire, or staples. 7. The bottom and sides of the fabric shall be anchored in a trench or pinned with 8-inches erosion control matting staples. 8. Do not splice the fabric, but use a continuous piece across the basin. Maintenance: 1. Inspect baffles at least once a week and after each rainfall. Make any required repairs immediately. 2. Be sure to maintain access to the baffles. Should the fabric of a baffle collapse, tear, decompose, or become ineffective, replace it promptly. 3. Remove sediment deposits when it reaches half full to provide adequate storage volume for the next rain and to reduce pressure on the baffles. Take care to avoid damaging the baffles during cleanout. Sediment depth should never exceed half the designed storage depth. 4. After the contributing drainage area has been properly stabilized, remove all baffle materials and unstable sediment deposits, bring area to grade and stabilize with ground cover per specifications. u Baffle materi 3' MIN. 4' MAX. U u Extend 9 gauge wire to Basin side or install T-Post to anchor Baffle to side of Basin and secure to vertical Post Variable Depth Secure bottom of Baffle to ground with 12" Staples at 12" maximum spacing General Notes: 1. Design velocities exceeding 2-ft/sec require temporary Check dams, blankets, mats or similar liners to protect seed and soil until vegetation becomes established. 2. Grass -lined channels with design velocities exceeding 6-ft/sec should include turf reinforcement. Construction Specifications: Grade the surface of installation areas so that the ground is smooth and loose. When seeding prior to installation, follow the steps for seed bed preparation, soil amendments, and seeding in Surface Stabilization, 6.1 (NC Erosion & Sedimentation Control Design Manual. All gullies, rills, and any other disturbed areas must be fine graded prior to installation. Spread seed before installation. (Important: Remove all large rocks, dirt clods, stumps, roots, grass clumps, trash, and other obstructions from the soil surface to allow for direct contact between the soil surface and the matting.) Terminal anchor trenches are required at matting ends and intermittent trenches must be constructed across channels at 25-ft intervals, Terminal anchor trenches should be a minimum of 12-inches in depth and 6-inches in width, while intermittent trenches need be only 6-inches deep and 6-inches wide. Installation in Channels - Excavate terminal trenches (12-in deep and 6-in wide) across the channel at the upper and lower end of the lined channel sections. At 25-ft intervals along the channel, anchor the matting across the channel either in 6-in by 6-in trenches or by installing two closely spaced rows of anchors. Excavate longitudinal trenches 6-in deep and wide along channel edges (above water line) in which to bury the outside matting edges. Place the first matting at the downstream end of the channel. Place the end of the first matting in the terminal trench and pin it at 1-ft intervals along the bottom of the trench. Anchoring Devices -11 gauge, at least 6-in long by 1-in wide stapes or 12-in minimum length wooden stakes are recommended for anchoring the matting to the ground. Drive staples or pins so that the top of the staple or pin is flush with the ground surface. Anchor each matting every 3-ft along its center. Longitudinal overlaps must be sufficient to accommodate a row of anchors and uniform along the entire length of overlap and anchored every 3-ft along the overlap length. Roll ends may be spliced by overlapping 1-ft (in the direction of water flow), with the upstream/upslope mat placed on top of the downstream/downslope matting. This overlap should be anchored at 1-ft spacing across the matting When installing multiple width mats heat seamed in the factory, all factory seams and field overlaps should be similarly anchored. Maintenance 1. Inspect Swale between liner at least weekly and after each significant (1/2-inch or greater) rain fall event. Repair immediately. 2. Good contact with the ground must be maintained, and erosion must not occur beneath the matting. 3. Any areas of the matting that are damaged or not in close contact with the ground shall be repaired and stapled. 4. If erosion occurs due to poorly controlled drainage, the problem shall be fixed and the eroded area protected. 5. Monitor and repair the matting as necessary until ground cover is established. 2 Male Fitting on Outlet end. Straw Wattle (Typ.) Install 1x1 Wood Compact a Stake; 24" Long (Typ.) Excavated Soil "L" = The Distance Such That Points Fin. Grade on Upslope A "A" & "B" Are Equal Elevation Side (Typ.) - _ _ (L ) B Leave 3" of Stake Exposed (Typ.) \-Compacted Sub -Grade Set Wattle in a 3" GENERAL SECTION VIEW deep trench NT.S. Install 1x1 Wood Fin. Grade, Stake: 24" Lona (TVD.t Straw Wattle (Typ.)� Slope � A \ SECTION VIEW Distance (ft) < 6:1 50 6:1 to 4:1 25 4:1 to 2:1 20 2:1 to 1:1 10 > 1:1 5 N.T.S. Construction Specifications: 1. Place wattles to the lines and dimensions shown in the plan. 2. Keep the center wattle section at least 3-inches below natural ground level where the dam abuts the channel banks. 3. Extend wattle at least 1.5-ft beyond the ditch bank to keep water from cutting around the ends of the check dam. 4. Set spacing between dams to assure that the elevation at the top of the lower dam is the same as the toe elevation of the upper dam. 5. Protect the channel after the lowest check dam from heavy flow that could cause erosion. 6. Make sure that the channel reach above the most upstream dam is stable. 7. Ensure that other areas of the channel such as culvert entrances below the check dams are not or subject to damage blockage from displaced stones. 1 9 9 P 8. Excavated soil should be placed up -slope from the anchor trench and compacted. Place the wattle in the trench so that it contours to the soil surface. Adjacent wattles shall be tightly abutted to one another. Maintenance: 1. Inspect check dams and channels at weekly and after each significant (1/2-inch or greater) rainfall event and repair immediately. Clean out sediment, straw, limbs, or other debris that could clog the channel when needed. 2. Anticipate submergence and deposition above the check dam and erosion from high flows around the edges of the dam. Correct all damage immediately. If significant erosion occurs between dams additional measures can be taken such as installinga protective ri ra liner in that portion of the channel. P riprap 3. Remove sediment accumulated behind the dams as needed to prevent damage to channel vegetation, allow the channel to drain through the wattle check dam, and prevent large flows from carrying sediment over the dam. Add stones to dams as needed to maintain design height and cross section. STRAW WATTLE CHECK DAM Summary Swale Dimensions 11 81e # M ill Depth ( } $ tt fil "+idth Bl ) Oj Width {10-jai} slope Slopes- Uniing 1 027 2 4.16 3.28% 4 Straw +/Tack Cc 2 0.2 2 3.60 1.47% 4 Straww/Tack Coal 3 0.4 2 5.20 219% 4 Straw►nrlTack Croat 4 0.43 2 5.44 1.75% 4 Strawvv Tack Coat 025 2 400 2.27% 4 Straw w/Tack Coat 6. 0.5 2 600 4.31 % 4 S iy5 Straw f Net Construction Specifications: 1. Place the barrel (typically 4-inch Schedule 40 PVC pipe) on a firm, smooth foundation of impervious soil. Do not use pervious materal such as sand, gravel, or crushed stone as backfill around the pipe. Place the fill material around the pip spillway in 4-inch layers and compact it under and around the ;e pipe to at least the same density of the adjacent embankment. Care must be taken not to raise the pipe from the firm contact with its foundation when compacting under the pipe haunches. Place a minimum depth of 2-feet of compacted backfill over the pipe spillway before crossing it with construction equipment. In no case should the pipe conduit be installed by cutting a trench through the dam after the embankment is complete. 2. Assemble the skimmer following the manufacturers instructions, or as designed. 3. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the barrel pipe. Attach the flexible joint to the barrel pipe and position the skimmer over the excavated pit or support. Be sure to attache a rope to the skimmer and anchor it to the side of the basin. This will be used to pull the skimmer to the side for maintenance. Maintenance: Inspect skimmer at least weekly and after each significant (one-half inch or greater) rainfall event and repair immediately. Pull the skimmer to one side so that the sediment underneath it can be excavated. Make sure vegetation growing in the bottom of the basin does not hold down the skimmer. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope will make the skimmer bob up and down and dislodge the debris and restore flow. If this does not work, pull the skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see if it is clogged; if so remove the debris. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice before repositioning the skimmer. Freezing weather can result in ice forming in the basin. Some special precautions should be taken in the winter to prevent the skimmer from plugging with ice. General Notes: 1. Barrel (solid, not foam core pipe) should be 1.4 times the depth of the water so the inlet can be pulled to the side for maintenance. If more than 8-feet long weight may have to be added to inlet to counter the increased buoyancy. 2. Barrel shall be smaller in diameter than inlet pipe to reduce buoyancy and tendency to lift inlet, but is sufficient for flow through inlet because of slope. Item Skimmer Size 1.5" 2" 2.5" 3" 4" 5" 6" 8" A 3" 0 Pipe 4" 0 Pipe 5" 0 Pipe 6" 0 Pipe 8" 0 Pipe 8" 0 Pipe 10" 0 Pipe 12" 0 Pipe 1.5" Orifice 2" Orifice 2.5" Orifice 3" Orifice 4" Orifice 5" Orifice 6" Orifice 8" Orifice B 2" 2" 2" 2" 2" Red Tip Yellow Tip Green Tip Blue Tip Orange Tip Silver Tip White Tip n/a C 2" 2.5" 2.5" 3" 4" 5" 6" 8" D 1.5" 2" 2.5" 3" 4" 4" 5" 6" E n/a 2" 2.5" 3" 4" 5" 6" 8" F 1.5" 1.5" 1.5 2" 3" 4" 5" 6" G 1.5" Hose 1.5" Hose 1.5" Hose 2" Hose 3" Hose 4" Hose 5" Hose 6" Hose 1.5" Fitting 2" Fitting 2" Fitting 2" Fitting 3" Fitting 4" Fitting 5" Fitting 6" Fitting H 4" 4" 4" 4" 4" 6" 6" 8" 1 16" Sq. 27" Sq. 29" Sq. 29" Sq. 33" Sq. 40" Sq. 47" Sq. 60" Sq. J 6' Max. I 6' Min. 6' Min. I 8' Min. 8' Min. 8' Min. I 8' Min. 8' Min. Berm shall be stabilized within 7 days Compacted - Soil 2:1 Max. Slope - Natural Ground Use gravel in areas when vehicles must cross frequently 2:1 Max (Typ.)� Double Net & StrawJ GRAVEL BERM Blanket N.T.S. Berm shall be stabilized within 7 days Compacted 2:1 Max. Soil Slope (Typ.) 2:1 Max. Slope Natural Grounder Double Net & StrawJ EARTHEN BERM Blanket N.T.S. Construction Specifications: 1. Remove and properly dispose of al trees, brush, stumps, and other objectionable material. 2. Ensure that the minimum constructed cross section meets all design requirements. 3. Ensure that the top of the dike is not lower at any point than the design elevation plus the specified settlement. 4. Provide sufficient room around diversions to permit machine regrading and cleanout. 5. Vegetate the ridge immediately after construction, unless it will remain in place for less than 30 working days. Maintenance: Inspect temporary diversions once a week and after every rainfall. Immediately remove sediment from the flow area and repair the diversion ridge. Carefully check outlets and make timely repairs as needed. When the area protected is permanently stabilized, remove the ridge and the channel to blend with the natural ground level and appropriately stabilize it. TEMPORARY EARTHEN DIVERSION BERM Landscape Architecture ♦ Fayetteville, INC Civil Engineering ♦ Southern Pines, INC 230C W. Pennsylvania Ave. ♦ Southern Pines, NC 28387 Voice: 910-725-1107 w w w. c r a w f o r d d s In c o m ,,�1►IIIIIII/II�j ,,,Ip11111111II�I E S I D E S I GN `OO� a�/TAT CG�q . O�Q� NEER/ CO2f�®®e Q Q 7 i e Q ��� Ti c U CERT. No. Z C Ar CERT. No. C-136 m' C-2097 z ,.4 11111, IIII►11� /1111111® ®®0 ®®®®®®® SEALS ```�11111111/// �N CAR i SEAL 027502 = NJAV .*,INEB''P I S. S L����`�� �I�►IIItt1.3v.t8 REVISIONS Z aQ J Z J J O O� �a Z O V � O ZZ O" O DC p }• W V LU J Z O O V oZ� aaa J Inc = OQ� .O � - O mJU W PROJECT DETAILS Project Manager: KSL CAD Technician: RFN/GER Reviewed / Approved By: KSL Project Number: 17032 SCALE ISSUE DATE 02/03/2018 SHEET NUMBER L