NCG020330_3M Pittsboro Mine Signed Letter ECT_20180215

Pond 1A
Pond 1
Pond 2Pond 3 Pond 9 Pond 4
Pond 5
Pond 6
Pond 7Pond 8
WA51
WA10
WB6
WA3
WA50
WA7
WA9
WB4
WA4
WA7a
WB10
WB3
WA6
WA2
WA12 WA5
WB14
WB12WB11
SB4
SA13
SB3SA50SB1SA1
2SA3
SB7SA16SA4SB12SB1SA3Legend
Jordan Lake Watershed
Property Boundary
Proposed Extension
Current Permitted Area
Stream
Pond
Wetland
New Stormwater Pond
I01,000500
Feet
FIGURE 13M PITTSBORO MINEPROPOSED QUARRY EXTENSION WITH JORDAN LAKE WATERSHED
Source:ESRI World Imagery 2011.
N:\PRJ\3M\GIS\MXD\Fig 5 Proposed Extension with Jordan Watershed.mxd jcassada 6/1/2015 10:58:14 AM
WB5WB6WB3WB4WA4WA5WA6WA7WA8WA7aWA9WA10WA11WA12WB3SB1SA1
SA17SA16SB5S
B
7 SB3SA12SA13SB3SB5PA1SB4SA4SA3 SA3SB1SA4 SB1 - OUTSA50 - OUT©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION“”“”“””“”
SA13SB3©ISSUED FOR PERMITNOT FOR CONSTRUCTIONCHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEVSLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION5A-10+002+21.17441.97436.552.45%10.02.00.953.981.45Riprap D50=6"5A-22+21.176+14.39436.55411.626.34%10.02.00.715.412.81Riprap D50=9"5A-36+14.399+17.74411.62408.561.01%10.02.01.192.900.75Veg5A-49+17.749+92.96408.56405.004.73%10.02.00.764.852.24Riprap D50=6"6A-10+001+76.79440.39439.080.74%2.02.00.971.810.45Veg6A-21+76.792+42.03439.08433.508.56%2.02.00.514.382.72Riprap D50=9"6A-32+42.033+09.83433.50420.0019.91%2.02.00.356.874.35Riprap D50=12"6B-10+005+06.02441.96423.943.56%10.02.00.964.822.13Riprap D50=6"6B-25+06.0211+32.29423.94420.000.63%10.02.01.512.620.59Veg7A-10+002+23.80418.14413.851.92%8.03.01.985.162.37Riprap D50=6"7A-22+23.8014+07.37413.85403.000.92%10.03.02.073.761.19Riprap D50=6"7B-10+000+65.56440.39438.462.94%2.02.00.593.491.08Riprap D50=6"7B-20+65.561+46.95438.46434.944.32%2.02.00.593.371.59Riprap D50=6"7B-31+46.952+65.40434.94420.3512.32%2.02.00.454.893.46Riprap D50=9"7B-42+65.403+33.28420.35403.0025.55%2.02.00.366.315.74Riprap D50=12"CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEV.SLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION1A-10+0.001+75.40506.00502.052.25%10.02.01.294.581.81Riprap D50=6"1A-21+75.403+23.06502.05494.145.36%10.02.01.016.103.38Riprap D50=9"1A-33+23.064+73.16494.14478.5210.41%10.02.00.837.605.39Riprap D50=12"1A-44+73.165+04.90478.52472.0020.57%10.02.00.689.498.739" Gabion BasketCHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEVSLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION8A-10+001+90.10506.00504.061.00%6.03.02.143.771.34Riprap D50=6"8A-21+90.104+23.18504.06487.337.18%5.02.01.377.706.14Riprap D50=12"8A-34+23.188+75.07487.33460.775.88%5.02.01.437.125.25Riprap D50=12"8A-48+75.0710+93.36460.77458.561.01%5.03.02.223.751.40Riprap D50=6"8A-510+93.3614+91.74458.56440.144.62%6.02.01.386.363.98Riprap D50=9"8A-614+91.7416+95.67440.14428.005.95%6.02.01.286.934.75Riprap D50=9"
©CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEV.SLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION1A-10+0.001+75.40506.00502.052.25%10.02.01.294.581.81Riprap D50=6"1A-21+75.403+23.06502.05494.145.36%10.02.01.016.103.38Riprap D50=9"1A-33+23.064+73.16494.14478.5210.41%10.02.00.837.605.39Riprap D50=12"1A-44+73.165+04.90478.52472.0020.57%10.02.00.689.498.739" Gabion Basket1B-1*0+003+75.63471.65465.911.53%10.04.02.845.592.71Riprap D50=6"1B-2*3+75.636+45.69465.91645.696.63%10.04.01.949.478.03Riprap D50=12"1B-3*6+45.6916+14.73645.69437.911.04%10.04.03.034.791.97Riprap D50=6"1B-4*16+14.7321+51.20437.91431.841.13%10.04.02.984.942.10Riprap D50=6"1B-5*21+51.2023+18.96431.84424.004.67%10.04.02.078.216.03Riprap D50=12"1B-6*23+18.9625+54.61424.00405.917.68%10.04.01.809.858.63Riprap D50=12"*CHANNEL 1B (1-6) IS EXISTING. THIS ANALYSIS BASED ON EXISTING FIELD CONDITIONS WHICH MAY DIFFER SLIGHTLY FROM WHAT IS NOTED ON SHEET PBOR-888-C-705AISSUED FOR PERMITNOT FOR CONSTRUCTION
WB3WB4WB3SA16SB5SB4©CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEV.SLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION4A-10+002+31.02406.46394.725.08%10.02.00.945.722.98Riprap D50=9"4A-22+31.029+78.56394.72390.000.63%10.02.51.602.720.63Veg4B-10+001+97.27412.00407.782.14%6.02.01.103.801.47Riprap D50=6"4B-21+97.274+86.76407.78391.785.53%6.02.00.835.242.86Riprap D50=9"4B-34+86.767+17.16391.78390.000.77%6.02.01.372.580.66Veg5A-10+002+21.17441.97436.552.45%10.02.00.953.981.45Riprap D50=6"5A-22+21.176+14.39436.55411.626.34%10.02.00.715.412.81Riprap D50=9"5A-36+14.399+17.74411.62408.561.01%10.02.01.192.900.75Veg5A-49+17.749+92.96408.56405.004.73%10.02.00.764.852.24Riprap D50=6"5B-10+003+67.99406.46405.000.40%14.03.01.562.190.39Veg9A-10+001+77.81412.00410.021.11%6.02.01.673.441.16Riprap D50=6"9A-21+77.817+57.88410.02405.000.87%10.02.01.362.900.74Veg9B-10+002+59.24406.00405.000.39%10.02.01.201.800.29VegISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEVSLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION8A-10+001+90.10506.00504.061.00%6.03.02.143.771.34Riprap D50=6"8A-21+90.104+23.18504.06487.337.18%5.02.01.377.706.14Riprap D50=12"8A-34+23.188+75.07487.33460.775.88%5.02.01.437.125.25Riprap D50=12"8A-48+75.0710+93.36460.77458.561.01%5.03.02.223.751.40Riprap D50=6"8A-510+93.3614+91.74458.56440.144.62%6.02.01.386.363.98Riprap D50=9"8A-614+91.7416+95.67440.14428.005.95%6.02.01.286.934.75Riprap D50=9"CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEV.SLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION1A-10+0.001+75.40506.00502.052.30%10.02.01.294.581.81Riprap D50=6"1A-21+75.403+23.06502.05494.145.36%10.02.01.016.103.38Riprap D50=9"1A-33+23.064+73.16494.14478.5210.41%10.02.00.837.605.39Riprap D50=12"1A-44+73.165+04.90478.52472.0020.57%10.02.00.689.498.739" Gabion BasketISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTIONCHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEVSLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR (LB/FT^2)PROTECTION5A-10+002+21.17441.97436.552.45%10.02.00.953.981.45Riprap D50=6"5A-22+21.176+14.39436.55411.626.34%10.02.00.715.412.81Riprap D50=9"5A-36+14.399+17.74411.62408.561.01%10.02.01.192.900.75Veg5A-49+17.749+92.96408.56405.004.73%10.02.00.764.852.24Riprap D50=6"6A-10+001+76.79440.39439.080.74%2.02.00.971.810.45Veg6A-21+76.792+42.03439.08433.508.56%2.02.00.514.382.72Riprap D50=9"6A-32+42.033+09.83433.50420.0019.91%2.02.00.356.874.35Riprap D50=12"6B-10+005+06.02441.96423.943.56%10.02.00.964.822.13Riprap D50=6"6B-25+06.0211+32.29423.94420.000.63%10.02.01.512.620.59Veg7A-10+002+23.80418.14413.851.92%8.03.01.985.162.37Riprap D50=6"7A-22+23.8014+07.37413.85403.000.92%10.03.02.073.761.19Riprap D50=6"7B-10+000+65.56440.39438.462.94%2.02.00.593.491.08Riprap D50=6"7B-20+65.561+46.95438.46434.944.32%2.02.00.593.371.59Riprap D50=6"7B-31+46.952+65.40434.94420.3512.32%2.02.00.454.893.46Riprap D50=9"7B-42+65.403+33.28420.35403.0025.55%2.02.00.366.315.74Riprap D50=12"
©CHANNEL #BEGINNING STA.END STA.BEGIN ELEV.END ELEV.SLOPEWIDTH (FT)DEPTH (FT)FLOW DEPTH (FT)(50yr-24hr)MAX. VELOCITY (FT/S)(50yr-24hr)SHEAR(LB/FT^2)PROTECTION4A-10+002+31.02406.46394.725.08%10.02.00.945.722.98Riprap D50=9"4A-22+31.029+78.56394.72390.000.63%10.02.51.602.720.63Veg4B-10+001+97.27412.00407.782.14%6.02.01.103.801.47Riprap D50=6"4B-21+97.274+86.76407.78391.785.53%6.02.00.835.242.86Riprap D50=9"4B-34+86.767+17.16391.78390.000.77%6.02.01.372.580.66VegISSUED FOR PERMITNOT FOR CONSTRUCTION5B-10+003+67.99406.46405.000.40%14.03.01.562.190.39Veg9A-10+001+77.81412.00410.021.11%6.02.01.673.441.16Riprap D50=6"9A-21+77.817+57.88410.02405.000.87%10.02.01.362.900.74Veg9B-10+002+59.24406.00405.000.39%10.02.01.201.800.29Veg
WB5WB3WB4WA4WA5WA6WA7WA8WA7aWA9WA10WA11WA12WB3SA17SA16 SB5SB3SA12SA13SB3SB5SB4©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
©ISSUED FOR PERMITNOT FOR CONSTRUCTION
WB5WB6WB3WB4WA4WA5WA6WA7WA8WA7aWA9WA10WA12WB3SA16SB5S
B
7 SB3SA12SA13SB3SB5SB4©ISSUED FOR PERMITNOT FOR CONSTRUCTION
WB5WB6WB3WB4WA4WA5WA6WA7WA8WA7aWA9WA10WA12WB3SA16SB5S
B
7 SB3SA12SA13SB3SB5SB4©ISSUED FOR PERMITNOT FOR CONSTRUCTION