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Home My WebLink AboutHF Lee Tech Memo Additional Wells 2017_20171020synTerra TECHNICAL MEMORANDUM Date: October 20, 2017 File: 1026.104.34 To: Ryan Czop, Duke Energy Progress Cc: Kathy Webb From: Judd Mahan Subject: Active Basin Additional Assessment Well Summary 2017 Property acquisitions on the north and east sides of the active ash basin in early 2017 allowed for the installation of ten additional groundwater assessment wells at the H.F. Lee Energy Complex in June 2017. The locations of the 10 additional assessment wells (AMW-19S/BC through AMW-23S/BC) are shown on Figure 1. Comprehensive Site Assessment (CSA) and historical groundwater monitoring results indicated there was potential in these areas for groundwater constituent concentrations greater than 2L. The additional well installations allowed for further delineation of constituent distribution on the north and east sides of the ash basin. This memo summarizes well development and initial sampling of the additional assessment wells. Analytical results are summarized in Table 1. Boring logs are included as Attachment 1. WELL DEVELOPMENT AND SAMPLING Shortly after well installation, all ten wells were developed for approximately two hours each after allowing grout to cure for at least 24 hours. Additional development was conducted July 31 to August 2 in order to achieve low turbidity (<10 NTUs) and pH less than 8.5 prior to sampling. Nine of the ten new wells were sampled in August. A sample was not collected from AMW-23S in August 2017 due to high turbidity. Well AMW-23S was further developed and sampled for the first time on September 21, 2017. ANALYTICAL RESULTS Of the nine wells (AMW-19BC/S through AMW-23BC) sampled in August 2017, all had a final pH less than 8.5 S.U.s and turbidity less than 10 NTUs. AMW-23S was sampled in September 2017, pH was below 8.5 S.U.s, however, final turbidity was high (26.6 NTUs). Analytical results for boron and arsenic were below 2L in all ten wells. Iron concentrations exceeded the 2L in all of the samples. Exceedances of 2L or IMAC for cobalt, manganese, and vanadium were detected in several wells. Table 1 summarizes P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\34.CCP Drilling Oversight\2017 Tech Memo\Tech Memo Additional Wells 2017.docx Active Basin Additional Assessment Well Summary 2017 October 20, 2017 HF Lee Energy Complex Page 2 the field parameters and analytical results for the August and September 2017 sampling of the additional assessment wells. P:\Duke Energy Progress.1026\104. Lee Ash Basin GW Assessment\34.CCP Drilling Oversight\2017 Tech Memo\Tech Memo Additional Wells 2017.docx Active Basin Additional Assessment Well Summary 2017 October 20, 2017 HF Lee Energy Complex FIGURE SynTerra P: \Duke Energy Progress.1026\ 104. Lee Ash Basin GW Assessment\34.CCP Drilling Oversight\2017 Tech Memo\Tech Memo Additional Wells 2017.docx Active Basin Additional Assessment Well Summary 2017 October 20, 2017 HF Lee Energy Complex SynTerra P: \Duke Energy Progress.1026\ 104. Lee Ash Basin GW Assessment\34.CCP Drilling Oversight\2017 Tech Memo\Tech Memo Additional Wells 2017.docx TABLE 1 ANALYTICAL SUMMARY ADDITIONAL ASSESSMENT WELLS 2017 H.F LEE ENERGY COMPLEX DUKE ENERGY PROGRESS, LLC, GOLDSBORO, NC Active Basin Additional Assessment Well Summary 2017 October 20, 2017 HF Lee Energy Complex ATTACHMENT 1 BORING LOGS SynTerra P: \Duke Energy Progress.1026\ 104. Lee Ash Basin GW Assessment\34.CCP Drilling Oversight\2017 Tech Memo\Tech Memo Additional Wells 2017.docx a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-19BC PROJECT NO: 1026.104 STARTED: 7/14/17 COMPLETED: 7/17/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 46.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uui a 0 U a O o 6 z Q WELL w < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION 0 U U -Protective casin SP SAND, dark brown - black, fine sand (50%) and silt with locking cap ML 50% , roots and leaf litter, dry, loose ML SILT, brownish orange silt with fine sand and trace SP clay, damp, loose 5 SP SAND, mottled orange and tan fine sand and silt, ML laminated, moist 10 ML SILT, mottled gray and orange clayey silt, laminated, mottled o;: •.: ;::• CL non wet 0 -6" PVC surface 15 °. . 'o �.; . casing ..0 Sp SAND, tan -light orange coarse sand with approximately -Grout GP 20% small gravel clasts, >90% quartz, loose, poorly graded, alluvium °`� -2" Sch. 40 threaded PVC riser 20 o' a SP SAND, gray medium sand with trace coarse sand, 25 >80% quartz, trace fine grains (mica) CH I CLAY, dark gray sandy clay, >15% sand, highly plastic SC stiff, moist CH CLAY, dark gray clay, highly plastic, stiff, moist 30 CH CLAY, dark gray clay with trace mica, moist, slightly stiff, massive -Bentonite seal 35 CH CLAY, dark -gray clay, laminated with fine sand and silt, SM damp, low recovery CLIENT: Duke Energy Progress, LLC. ra 48 Rver Street, Suite 220 PROJECT LOCATION: Goldsboro, NC 148 River synTerra Faxn864 679 371199 PAGE 1 OF 2 a a O 16 N O H z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-19BC PROJECT NO: 1026.104 STARTED: 7/14/17 COMPLETED: 7/17/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 46.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a U o U U) a O p z o f WELL WW < DESCRIPTION Q w �- m 0 o Q CONSTRUCTION o:: •.:::. an pac o -2" U-packed well Sp SAND, gray medium grain sand with occasional coarse screen GP grains and gravel, carbonaceous debris <5% of material, >80% quartz, loose, wet 45 -Boring advanced to 70' bgs, backfilled CH CLAY, olive green clay, moist, stiff, massive with bentonite to 46' bgs 50 SP SAND, light gray medium -coarse sand, loose, wet 55 CH CLAY, light greenish gray clay, massive 60 CH CLAY, mottled orange yellow and brown silty clay, stiff, 1 ML damp 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 2 OF 2 a a O 16 N O H z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-19S PROJECT NO: 1026.104 STARTED: 7/14/17 COMPLETED: 7/14/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 26.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uui a 0 U a O o 6 z Q WELL W < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION 0 U U -Protective casin SP SAND, dark brown - black, fine sand (50%) and silt with locking cap ML 50% , roots and leaf litter, dry, loose ML SILT, brownish orange silt with fine sand and trace SP clay, damp, loose 5 -Grout -2" Sch. 40 threaded PVC riser SP SAND, mottled orange and tan fine sand and silt, ML laminated, moist 10 ML SILT, mottled gray and orange clayey silt, laminated, mottled o;: •.: ;::• CL non wet -Bentonite seal :. a 15 Sp SAND, tan -light orange coarse sand with approximately GP 20% small gravel clasts, >90% quartz, loose, poorly . .o graded, alluvium o.• Q .;. -Sand pack 20 0 . . ° a -2" U-packed well screen SP SAND, gray medium sand with trace coarse sand, >80% quartz, trace fine grains (mica) 25 30 35 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 1 a 0 16 0 Z 2 0 a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-20BC PROJECT NO: 1026.104 STARTED: 7/13/17 COMPLETED: 7/18/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 43.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uui a 0 U Cl- O o 6 z Q WELL w < DESCRIPTION Q w �- m 0 o Q CONSTRUCTION 0 U U -Protective casin ML SILT, dark brown clayey silt, dry, organic rich (roots with locking cap CL and leaf litter), loose, non -cohesive ML SILT, light brownish orange silt with trace fine sand and SP clay, dry, non -cohesive 5 CH CLAY, light orangish tan, stiff, laminated clay and silt, ML non -cohesive, moist, trace organics (roots) 10 CH CLAY, light orangish tan clay with few coarse sand o;•:•.:;::, SP granules, medium plasticity, cohesive, rounded alluvia o SPquartz grains GP -c PVC surface SAND, orange coarse sand with trace gravel, wet, non -cohesive, >90% quartz casing -Grout 15 SP SAND, light gray coarse sand, >95% quartz, wet, loose, very well sorted -2" Sch. 40 threaded PVC riser 20 SP SAND, light gray medium sand, >90% quartz, loose, wet SP SAND, light gray becoming medium gray downhole, GP coarse sand with approximately 15% gravel clasts, CH loose, wet ML CLAY, dark gray clay with trace silt, cohesive, medium plasticity, moist, very stiff 25 CH CLAY, dark gray clay, cohesive, medium plasticity, moist, very stiff 30 -Bentonite seal CH CLAY, dark gray silty clay, minor carbonaceous debris, ML moist, stiff 35 -Sand pack -2" U-packed well Sp SAND, gray medium sand with occasional gravel, screen Gp loose, wet, laminated with laminations <2cm, sharp lower contact CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 2 a a O 16 N O z Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-20BC PROJECT NO: 1026.104 STARTED: 7/13/17 COMPLETED: 7/18/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 43.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uui a a O p z o f WELL WW < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION 7.77 Sp SAND, gray medium sand with occasional gravel, GP loose, wet, laminated with laminations <2cm, sharp lower contact continued -Boring advanced to 50' bgs, backfilled with bentonite to 43' 45 bgs CH CLAY, Olive green clay, massive very stiff, moist 50 55 60 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 2 OF 2 a a O 16 N O H Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-20S PROJECT NO: 1026.104 STARTED: 7/13/17 COMPLETED: 7/13/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 23.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uui a 0 U a O o 6 z Q WELL W < DESCRIPTION Q w �- m 0 o Q CONSTRUCTION 0 U U -Protective casin ML SILT, dark brown clayey silt, dry, organic rich (roots with locking cap CL and leaf litter), loose, non -cohesive ML SILT, light brownish orange silt with trace fine sand and -Grout SP clay, dry, non -cohesive 5 -2" Sch. 40 threaded PVC riser CH CLAY, light orangish tan, stiff, laminated clay and silt, ML non -cohesive, moist, trace organics (roots) -Bentonite seal 10 CH CLAY, light orangish tan clay with few coarse sand o;•:•.:;::, SP granules, medium plasticity, cohesive, rounded alluvia o SP quartz grains GP SAND, orange coarse sand with trace gravel, wet, non -cohesive, >90% quartz 15 SP SAND, light gray coarse sand, >95% quartz, wet, loose, very well sorted -Sand pack -2" U packed well screen 20 SP SAND, light gray medium sand, >90% quartz, loose, wet SP SAND, light gray becoming medium gray downhole, GP coarse sand with approximately 15% gravel clasts, CH loose, wet ML CLAY, dark gray clay with trace silt, cohesive, mediu lasticit , moist, ve stiff 25 30 35 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 1 a a 0 16 Z z w 2 U) w U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-21 BC PROJECT NO: 1026.104 STARTED: 7/19/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o w Uuj a 0 < 0 U DESCRIPTION a Q U O o w �- 6 z m 0 U Q a Q WELL CONSTRUCTION -Protective casin SP SAND, dark brown sandy topsoil, loose, dry, abundant with locking cap organics SILT, orangish-brown clayey silt, loose, damp SP SC SP SAND, mottled orange and gray, medium sand, loose, 5 wet ML SILT, gray silt, loose, wet CL ML CLAY, gray silty clay, loose, wet ML SILT, mottled orange and gray silt, loose, wet 10 ML CL SP SILT, dark gray clayey silt, loose, wet SAND, orange -brown medium coarse sand, loose, wet o' a ." -6" PVC surface casing 15 �.' Sp GP SAND, orangish brown becoming dark brown with depth, coarse sand with gravel clasts, quartz sand, loose, wet d`. o' a 20 CL GP CLAY, gray sandy clay with gravel clasts, quartz and shale gravel, shale clasts (very soft, fissile, sericite rich -Grout 25 CH CLAY, tan orange red and yellow mottled clay with few silt grains, damp, stiff, plastic, cohesive, residual foliation fabric 30 -2" Sch. 40 threaded PVC riser CH SP SG CLAY, reddish orange clay with trace coarse sand and gravel, damp, stiff, plastic, cohesive 35 CH CLAY, reddish orange clay with trace silt, damp, stiff, plastic �� CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC sy"Terra Faxn864 679 371199 PAGE 1 OF 2 a a O 16 N O z Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-21 BC PROJECT NO: 1026.104 STARTED: 7/19/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uui o a O p z o f WELL WW < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION 45 CH CLAY, reddish orange clay with trace silt, damp, stiff, plastic (continued) -Bentonite seal 50 -Sand pack 55 CH CLAY, reddish orange clay with trace silt and coarse -2" U packed well sand, damp, stiff, plastic screen 60 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 2 OF 2 a a O 16 N O H z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-21 S PROJECT NO: 1026.104 STARTED: 7/20/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 19.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uui a 0 U a O o 6 z Q WELL W DESCRIPTION Q w m 0 a Q CONSTRUCTION -Protective in SP SAND, dark brown sandy topsoil, loose, dry, abundant with locking cap organics SP SC SILT, orangish-brown clayey silt, loose, damp -Grout -2" Sch. 40 threaded SP SAND, mottled orange and gray, medium sand, loose, 5 wet PVC riser ML SILT, gray silt, loose, wet -Bentonite seal CL ML CLAY, gray silty clay, loose, wet ML SILT, mottled orange and gray silt, loose, wet ML SILT, dark gray clayey silt, loose, wet SAND, orange -brown medium coarse sand, loose, wet CL SP 10 o. Q .;. o• -Sand pack Sp SAND, orangish brown becoming dark brown with -2" U-packed well GP depth, coarse sand with gravel clasts, quartz sand, screen 15 loose, wet o. 20 25 30 35 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 1 a a O 16 N O Z z w 2 U) co w U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-22BC PROJECT NO: 1026.104 STARTED: 7/19/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o w Uuj a 0 < C� U DESCRIPTION a Q U O o w �- O� 6 z m 0 U Q 0- Q WELL CONSTRUCTION -Protective in CL SPJ CLAY, dark brown fine sandy clay, trace organics, loose, dry with locking cap SP SAND, light gray -light brown, fine -medium grained sand, loose, damp 5 SP CL SAND, orange -brown coarse sand with clay matrix, loose, dam SP SAND, tan coarse sand with approximately 10% gravel, loose, wet 10 SP SAND, light brown coarse sand with approximately 10% gravel, loose, wet -6" PVC surface casing 15 CL ML CLAY, tan clay with few silt grains, non -plastic, cohesive, dam SAND, very coarse sand with significant quartz and h lite ravel (approximately 20%gravel),loose, wet SP GP CH SP CLAY, black clay and fine sand, Interbedded with stiff clay, micaceous, thick beds between 1'-2' 20 -Grout 25 -2" Sch. 40 threaded CH CLAY, black clay, damp, stiff, highly plastic, trace mica and pyrite PVC riser 30 CH ML CLAY, light gray silty clay, damp, stiff, plastic 35 CH ML CLAY, reddish orange and brownish yellow mottled silty clay, damp, stiff, plastic CH CLAY, red, olive green, brown and white mottled clay SynTerra CLIENT: Duke Energy Progress, LLC. 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC sy"Terra Faxn864 679 371199 PAGE 1 OF 2 a a O 16 N O z Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-22BC PROJECT NO: 1026.104 STARTED: 7/19/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uuj a O U) o O D F a WELL Wo < DESCRIPTION Q w `� 0 a n CONSTRUCTION m MIL with race silt, non -plastic, stitt, slightly amp 45 -Bentonite seal CH CLAY, red, olive green, brown and white mottled clay 50 ML with trace silt, non -plastic, stiff, slightly damp (continued) -Sand pack 55 -2" U-packed well screen 60 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 2 OF 2 a a O 16 N O z Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-22S PROJECT NO: 1026.104 STARTED: 7/20/17 COMPLETED: 7/20/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 15.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan o Uuj a 0 U a O o 6 z Q WELL W < DESCRIPTION Q w �- m 0 0- Q CONSTRUCTION C� U O� U -Protective in CL CLAY, dark brown fine sandy clay, trace organics, with locking cap S.PJ loose, dry Grout SP SAND, light gray -light brown, fine -medium grained -Bentonite seal sand, loose, damp 2" Sch. 40 threaded PVC riser SP SAND, orange -brown coarse sand with clay matrix, 5 CL loose, dam SP SAND, tan coarse sand with approximately 10% gravel, loose, wet -Sand pack 10 -2" U-packed well screen SP SAND, light brown coarse sand with approximately 10% gravel, loose, wet 15 20 25 30 35 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 1 a a O 16 N O H Z W 2 U) N 0 a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-23BC PROJECT NO: 1026.104 STARTED: 7/12/17 COMPLETED: 7/18/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 52.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uui a U U) a O 6 z o f WELL WW < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION O U U -Protective casin with locking cap ML SILT, loose dark brown silt, dry, non -cohesive, organic rich with roots and leaf litter 5 SM SAND, light orangish brown fine sand with trace silt, loose, damp 10 . SM SAND, light orangish brown fine sand with trace silt, SP loose, dam with or anics leaf litter and roots SAND, light gray medium coarse sand (90% quartz), -6" PVC surface loose, wet, alluvium, organics casing SP SAND, gray medium sand with a few small rounded gravel clasts, alluvium 15 SP SAND, gray medium sand with a few small rounded — `—' PT ravel clasts, alluvium Sp PEAT, dark brown organic woody material, peat, soft, GP dam -Grout SAND, gray medium sand with a few small rounded 20 ' CH gravel clasts, alluvium, sharp contact with underlying l -2" Sch. 40 threaded -light gray clay, medium plasticity, =cohes�ive, PVC riser ist 7j 25 CH CLAY, gray -dark dark gray clay, medium plasticity, g Y- 9 Y Y, p Y, cohesive, moist 30 35 CH CLAY, dark gray clay trace silt, moist, stiff, minor ML carbonaceous debris, trace pyrite -Bentonite seal CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 2 a a O 16 N O z Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-23BC PROJECT NO: 1026.104 STARTED: 7/12/17 COMPLETED: 7/18/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 52.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uui o a O p z o f WELL WW < DESCRIPTION Q w �- m 0 FL Q CONSTRUCTION CH CLAY, dark gray clay trace silt, moist, stiff, minor ML carbonaceous debris, trace pyrite (continued) CH SP CLAY, dark gray clay interbedded with fine sand, moist 45 :o: Q . p: -Sand pack Q ; -2" U-packed well o O'. SP GP SAND, gray medium grained sand with occasional screen coarse grains and gravel, loose, wet, alluvium c5..: 50 o•• Q .;. -Boring advanced to 55' bgs, backfilled CH CLAY, olive green clay, moist, stiff, massive with bentonite to 52' bgs 55 60 65 70 75 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 2 OF 2 a a O 16 N O H Z W 2 U) N W U) a PROJECT: H.F. Lee Energy Complex WELL / BORING NO: AMW-23S PROJECT NO: 1026.104 STARTED: 7/13/17 COMPLETED: 7/13/17 DRILLING COMPANY: Geologic Exploration NORTHING: EASTING: DRILLING METHOD: Sonic ELEVATION ft M.P. ELEV: ft BOREHOLE DIAMETER: 4 7/8" IN WATER: ft TOC TOTAL DEPTH: 20.0 ft BGS NOTES: LOGGED BY: M. Youngblood CHECKED BY: J. Mahan a Uui a U U) a O 6 z o f WELL WW < DESCRIPTION Q w �- m 0 a Q CONSTRUCTION O U U -Protective casin with locking cap ML SILT, loose dark brown silt, dry, non -cohesive, organic rich with roots and leaf litter -Grout 5 -2" Sch. 40 threaded PVC riser SM SAND, light orangish brown fine sand with trace silt, loose, damp -Bentonite seal 10-..T.Z. SM SAND, light orangish brown fine sand with trace silt, SP loose, dam with organics leaf litter and roots SAND, light gray medium coarse sand (90% quartz), loose, wet, alluvium, organics SP SAND, gray medium sand with a few small rounded -Sand pack gravel clasts, alluvium 15 -2" U-packed well screen SP SAND, gray medium sand with a few small rounded — `—' PT ravel clasts, alluvium Sp PEAT, dark brown organic woody material, peat, soft, Gp dam SAND, gray medium sand with a few small rounded 20 ' gravel clasts, alluvium, sharp contact with underlying clay 25 30 35 CLIENT: Duke Energy Progress, LLC. SynTerra 148 River Street, Suite 220 PROJECT LOCATION: Goldsboro, NC synTerra Faxn864 679 371199 PAGE 1 OF 1