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Home My WebLink AboutNC0000396_App C Errata_20160831PROJECT: Asheville Steam Plant WELL / BORING NO: MW-08S PROJECT NO: 1026.102 STARTED: 3/3/15 COMPLETED: 3/3/15 DRILLING COMPANY: Cascade Drilling NORTHING: 644584.03 EASTING: 943389.913 DRILLING METHOD: Rotary Sonic G.S. ELEV: 2123.457 ft MSL M.P. ELEV: 2123.343 ft MSL BOREHOLE DIAMETER: 6 IN DEPTH TO WATER: ft TOC TOTAL DEPTH: 40.0 ft BGS NOTES: LOGGED BY: S. Wixon CHECKED BY: T. Platin U O O W p DESCRIPTION J p a CONSTRUCTION p Of 0 m0 Protective casino with locking cap MIL FILL, medium, red (2.5 YR, 4/6), moist to dry with depth, non plastic, silt with some fine sand. 5 10 Grout 15 2" Sch. 40 threaded PVC riser 20 SAPROLITE, medium brown to very dark brown (7.5 YR, 5/4 to 7.5 YR, 2.5/2), relic structure apparent throughout, highly ozidized zones, nearly black at 21'. 25 �— Bentonite seal 30 —Sand Pack 35 2" pre -packed well screen CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Arden, NC Greenvlle, South Carolina 29601 s mTerra Phone:l864 421 9999 PAGE 1 OF 2 PROJECT: Asheville Steam Plant WELL / BORING NO: MW-08S PROJECT NO: 1026.102 STARTED: 3/3/15 COMPLETED: 3/3/15 DRILLING COMPANY: Cascade Drilling NORTHING: 644584.03 EASTING: 943389.913 DRILLING METHOD: Rotary Sonic G.S. ELEV: 2123.457 ft MSL M.P. ELEV: 2123.343 ft MSL BOREHOLE DIAMETER: 6 IN DEPTH TO WATER: ft TOC TOTAL DEPTH: 40.0 ft BGS NOTES: LOGGED BY: S. Wixon CHECKED BY: T. Platin U O � 2 OJ WELL w Q p DESCRIPTION 0 p a Q CONSTRUCTION p of CD < Q� m0 45 50 55 60 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Arden, NC South Carolina 29601 Ter Phone:l864 421 99lle, 9 PAGE 2 OF 2 PROJECT: Asheville Steam Plant WELL / BORING NO: MW-08BR PROJECT NO: 1026.102 STARTED: 2/27/15 COMPLETED: 3/2/15 DRILLING COMPANY: Cascade Drilling NORTHING: 644588.011 EASTING: 943388.961 DRILLING METHOD: Rotary Sonic G.S. ELEV: 2123.896 ft MSL M.P. ELEV: 2123.885 ft MSL BOREHOLE DIAMETER: 10 and 6 IN DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.0 ft BGS NOTES: LOGGED BY: S. Wixon CHECKED BY: T. Platin U OWQ DESCRIPTIONU Om FL p p Q J0 CONSTRUCTION 0 0 U17 —Protective casino with x Px locking cap MIL FILL, medium, red (2.5 YR, 4/6), moist to dry with depth, non plastic, silt with some fine sand. 5 10 15 20 SAPROLITE, medium brown to very dark brown (7.5 YR, 5/4 to 7.5 YR, 2.5/2), relic structure apparent throughout, highly ozidized zones, nearly black at 21'. j 25 30 Grout 35 6" PVC surface casing 2" Sch. 40 threaded PVC riser CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Arden, NC South Carolina 29601 Ter Phone:l864 421 99lle, 9 PAGE 1 OF 3 PROJECT: Asheville Steam Plant WELL / BORING NO: MW-08BR PROJECT NO: 1026.102 STARTED: 2/27/15 COMPLETED: 3/2/15 DRILLING COMPANY: Cascade Drilling NORTHING: 644588.011 EASTING: 943388.961 DRILLING METHOD: Rotary Sonic G.S. ELEV: 2123.896 ft MSL M.P. ELEV: 2123.885 ft MSL BOREHOLE DIAMETER: 10 and 6 IN DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.0 ft BGS NOTES: LOGGED BY: S. Wixon CHECKED BY: T. Platin U O � 2 OJ WELL W Q p DESCRIPTION 0 p a Q CONSTRUCTION p of (D < Q� m0 SAPROLITE, medium brown to very dark brown (7.5 YR, 5/4 to 7.5 YR, 2.5/2), relic structure apparent throughout, highly ozidized zones, nearly black at 21'. continued Transition zone, partially weathered rock, thin rock fragments broken along foliation,. 4' recovery, competent bedrock. Amphibolite gneiss, 45 minor garnets and pyrite present. 50 -" GNEISS, gray to dark gray, fresh, slightly decomposed, secondary mineralization observed in fractures. 55 - 60 Amphibolite gneiss, strong gray to black, greenish black at 61'. 65 Bentonite seal 70 Same as above, greenish black at 67-72', white, garnet rich interval, slight weathering at 72-77'. —Sand Pack 75 2" pre -packed well screen Same as above, light greenish gray 77-78'. CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Arden, NC Greenvlle, South Carolina 29601 .synTerra Phone:l864 421 9999 PAGE 2 OF 3 PROJECT: Asheville Steam Plant WELL / BORING NO: MW-08BR PROJECT NO: 1026.102 STARTED: 2/27/15 COMPLETED: 3/2/15 DRILLING COMPANY: Cascade Drilling NORTHING: 644588.011 EASTING: 943388.961 DRILLING METHOD: Rotary Sonic G.S. ELEV: 2123.896 ft MSL M.P. ELEV: 2123.885 ft MSL BOREHOLE DIAMETER: 10 and 6 IN DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.0 ft BGS NOTES: LOGGED BY: S. Wixon CHECKED BY: T. Platin U O � 2 OJ WELL W Q p DESCRIPTION 0 p a Q CONSTRUCTION p of CD < Q� mO Same as above, light greenish gray 77-78'. (continued) 85 90 Same as above, black 87-90', light gray to white 90-92'. 95 Boring terminated at 97' bgs. Bentonite chips placed in borehole to a depth of 84' bgs to facilitate well placement. 100 105 110 115 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Arden, NC South Carolina 29601 Ter Phone:l864 421 99lle, 9 PAGE 3 OF 3 Duke - Asheville Water Well ID Elevation MSL MW-9BR 2113.51 MW-16BR 1 2026.74 MSL - Feet Above Mean Sea Level Depth measurements in feet MW-91311 to MW-16BR DISTANCE CHANGE IN LEVEL GRADIENT 810 86.77 0.10712 HORIZONTAL GRADIENT (i): 0.1071 Average Groundwater Velocity (V)* Phase I *Based on the Darcy Equation where velocity equals (K x i) / n Hydraulic Conductivity values (units of ft/day) from Table 6-8 MW-09BR Slug Out Test 1 8.38E-02 8,22E-02 Test 2 8.06E-02 MW-16BR PK-SI Test 1 3.23E+01 2.84E+01 PK-SI Test 2 1.54E+01 PK-SO Test 1 3.72E+01 PK-SO Test 2 3.50E+01 Hydraulic Conductivity (K) 4.0452 foot/day (Geometric Mean of K for MW-9BR and MW-16BR) Average Horizontal Gradient (i) 0.1071 foot/foot Porosity (n) 34 percent Velocity = 1.27450 foot/day 465 foot/year Monitoring Event: June 2015 ASSUMPTIONS: 1. K of 4.0452 ft/day based on in -situ slug and packer tests 2. Porosity based on values from Morris and Johnson 1967 crystalline rocks. Range from 34% to 57%. 34% used based on geologic conditions at the site. Prepared by: BDW Date: 7/11/2016 Checked: TDP Date: 7/11/2016 P:\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\19.EG_CSASUP\Errata\MW-9BR to MW-16BR REVISED.xls