NCG020931_Stormwater Plan_20180525

Scale: 1" = 100'Perennial Stream (Based on USGS Quadrangle Property LineAdjacent Property LineExisting Tree LineExisting Roadway10 ft. Topo LinesMap LegendMap or USDA Johnston County Soil Survey)13005/02/2018RWB1"=100'1105/02/2018Whitley Borrow PitBrogden Rd.Johnston County, NCJimmy Ray Whitley4187 US Hwy 70 ESmithfield, NC 27577DATE:DRAWN:REVISED:SCALE:Sheet No.of:______ENGINEERING & ENVIRONMENTALSCIENCE COMPANY3008 Anderson Drive Suite 102Raleigh, NC 27609(919) 781-7798Stormwater Plan Buffers from Adjacent Property0 50100200Mining Permit Limit OnlyFlood PlainPossible Limits of Disturbance2 ft. Topo Lines150100-Year Flood Plain LimitsN 42* 23' 19" E 1007.59'S 68* 56' 20" E 881.94'S 70* 41' 41" E 512.80'S 32* 52' 58" E 269.10'S 72* 36' 28" W 435.79'S 82* 08' 39" E 59.35'N 1 0 * 2 3 ' 3 9 " W 5 4 3 .0 0 'S 89* 47' 57" W 1252.28'S 67* 45' 40" W 529.30'721'870'1 0 6 5 '144'527'250' Property Buffer250' Property Buffer250' Zoning Line Buffer250' Property Buffer25' Proproperty Buffer2 5 0 ' Z o n i n g L i n e B u f f e r
2 5 0 ' P r o p e r t y B u f f e r
Existing 24" RCPExisting Dirt/Gravel Road4" PVC Invert Out 114.50'2.5" Orifice Skimmer Crest 119.5012' Wide Secondary Spillway(Invert of 4" PVC 115.00')Base 115.00122towards Skimmer Basin 1.Note: Grade in 20' wide strips 120120M I N I N G P E R M I T L I M I T S PROPERTY LINE & MINING PERMIT LIMITSPROPERTY LINE & MINING PERMIT LIMITSPROPERTY LINE & MINING PERMIT LIMITSPROPERTY LINE & MINING PERMIT LIMITSPROPERTY LINE & MINING PERMIT LIMITSMINING PERMIT LIMITSINTERIOR PROPERTY LINEPROPERTY LINE & MINING PERMIT LIMITSGATEDrainage DitchDiversion BermDrainage DitchNot shown on USGS Topographical Mapor USDA Soil Survey MapExisting Dirt/Gravel RoadExisting Dirt/Gravel RoadBasin #1 (Existing)1101 2 0
1 3 0
4" PVC Invert Out 109.50'2.5" Orifice Skimmer (Invert of 4" PVC 110.00')18' Wide Secondary Spillway(El. 113.00)Basin #2 (Proposed)S ilt F e n ce Silt FenceSilt FenceExisting 2' High Diversion BermDrainage AreasDrainage Areas for Basin #2Silt FenceProposed 2' High Diversion BermLimits of DisturbanceLimits of DisturbanceRECEIVING WATERUNNAMED TRIBUTARY TO POLECAT BRANCHC;NSW CLASSIFICATIONOUTFALL NO. 1OUTFALL NO. 2Drainage Areas for Basin #265'