71912 From: Dana Derrington Sent: Wednesday, May 31, :02 PM Central Standard Time TO:

Transcription

1 Blue, Karen From: Sent: To: Subject: Attachments: Categories: Hynum, Tammie Wednesday, May 31, 17 6:21 PM Sadler, Bill; Cusher, Annette; Rich, Jay FW: Monitoring Well Installation Report, Entergy White Bluff, Class 3N Landfill Permit No S3N-R3 Rec d Digitally TM-T Hynum pdf AFIN: Red Category PMT#: 0199-S3N-R3 By bluek at 8:52 am, Jun 05, Original Message----- DOC ID#: From: Dana Derrington [dld@ftn-assoc.com] Sent: Wednesday, May 31, 17 05:02 PM Central Standard Time TO: BS>FILE <KMB To: Hynum, Tammie Subject: Monitoring Well Installation Report, Entergy White Bluff, Class 3N Landfill Permit No S3N- R3 S W M D Hello Tammie, Please find the attached monitoring well installation report for the Entergy White Bluff, Class 3N Landfill. Feel free to call if you have any questions regarding this submittal. Regards, Dana Dana Derrington, PE *, PG * FTN Associates, Ltd. 3 Innwood Circle, Ste.2 Little Rock, AR Office: (1) Cell: (1) * Missouri and Arkansas 1

2 TENICAL MEMORANDUM DATE: May 31, 17 TO: FROM: Tammie J. Hynum Office of Land Resources, Arkansas Department of Environmental Quality Dana L. Derrington, PE, PG FTN Associates, Ltd. SUBJECT: Monitoring Well Installation Report, Entergy White Bluff, Class 3N Landfill, Permit No S3N-R3, AFIN: FTN No. R On behalf of Entergy Services, Inc. (Entergy), FTN Associates, Ltd. (FTN) is providing this technical memorandum for the Entergy White Bluff Class 3N Landfill in Redfield, Arkansas. The memorandum presents a summary of field activities associated with the installation and decommissioning of monitoring wells and piezometers as required by Arkansas Pollution Control and Ecology Commission (APCEC) Regulation No. 22, 22.13(f). 1.0 BACKGROUND Entergy submitted two work plans to the Arkansas Department of Environmental Quality (ADEQ) for the proposed installation of seven monitoring wells and decommissioning of two piezometers located at the landfill, in accordance with APCEC 22.13(f). The proposed scope of work in each work plan and associated ADEQ approvals are summarized below. To meet APCEC Regulation No. 22 requirements for the future groundwater monitoring program at the landfill, Entergy proposed the installation of four additional monitoring wells and the decommissioning of two temporary piezometers in a work plan dated January, 17 (ADEQ document identification number [DIN] 937). The work plan described the proposed installation of two shallow wells, MW-8S and MW-9S, screened in the saturated sediments of Stratum I, and two deep wells, MW-12D and MW-13D, screened in the saturated Stratum III soils. The proposed locations of these wells and the decommissioning of temporary piezometers FTN PZ-4 and FTN PZ-6 were based on prior communication between ADEQ, Entergy, and FTN.

3 Tammie J. Hynum May 31, 17 Page 2 Entergy submitted a second work plan dated January, 17, for the proposed installation of three additional Stratum III wells: MW-D, MW-14D, and MW-15D (DIN 938). These wells were being installed to augment the landfill's monitoring program under Title Code of Federal Regulations (CFR) Part 257, 257. through A conditional approval for the two work plans was granted on February 2, 17, in a letter from ADEQ (DIN 967). In the letter, ADEQ requested a shallow well be installed near proposed well MW-12D in lieu of the proposed shallow well MW-9S if Stratum I sediments were found to be saturated during the installation of proposed well MW-12D. ADEQ also requested that the location and possibly the depth of MW-13D be modified. All other proposed work described in the work plans (DINs 937 and 938) was approved. Entergy submitted a revised work plan on February 9, 17 (DIN 5), to address ADEQ s comments in the conditional approval letter (DIN 967). The revised work plan included the installation of a shallow well (MW-12S) near proposed Stratum III well MW-12D (instead of MW-9S near MW-9D) if Stratum I sediments were found to be saturated during installation of MW-12D. The revised work plan also relocated proposed MW-13D nearer to temporary piezometer FTN PZ-4. ADEQ approved the revised work plan (DIN 5) in a letter to Entergy dated February 16, 17 (DIN 718). 2.0 DRILLING AND WELL INSTALLATION Field activities associated with well installations were conducted February 8 through 25, 17. Walker-Hill Environmental, Inc. (WHE), an Arkansas-licensed driller, performed the drilling and well construction tasks, with an FTN geologist on-site to document the work. Soils for each well boring were described and classified according to the Unified Soil Classification System by the on-site geologist. Each Stratum I and Stratum III well boring was advanced using sonic drilling techniques and a 4x6-inch core and case system. Soils were continuously sampled using a -foot, 4-inch-diameter core barrel fitted with a sand catcher to maximize sample recovery. A -foot, 6-inch-diameter override casing was advanced over the core barrel prior to core retrieval. Where applicable, a temporary -inch-diameter casing was advanced 1 to 5 feet into the Stratum II clays during the drilling of Stratum III wells. This outer casing was left in place during deep well borehole advancement and during well construction activities to prevent or minimize downward migration of Stratum I groundwater. The large outer casing was not used during the drilling or construction of MW-13D because Stratum I soils are absent at that location.

4 Tammie J. Hynum May 31, 17 Page 3 Well construction procedures adhered to methods described in the Handbook of Suggested Practices for the Design and Installation of Ground-Water Monitoring Wells (US Environmental Protection Agency [EPA] 1991) and those required by the Arkansas Water Well Construction Commission (AWWCC). Each Stratum I well was constructed using 2-inch-diameter, flush-threaded, solid Schedule PVC riser and a -foot, 0.0-inch slotted, flush-threaded well screen and end cap. A filter pack consisting of - to -silica sand was placed in the well annulus to a minimum depth of 3 feet above the top of well screen, followed by a minimum of 3 feet of bentonite pellet seal and well-mixed bentonite-cement grout. The new Stratum I wells were secured at the surface with a 4-inch-square locking protective aluminum casings, concrete pads, and four concrete-filled pipe bollards. The Stratum III wells were similarly constructed except that 4-inch-diameter riser, well screen, and end cap were used and protected by an 8-inch-square locking protective aluminum/steel casing. The well identifications were clearly identified on the outside casings of each new well. Boring log and well construction details are included in Attachment PIZOMENTER ABANDONMENT Piezometer abandonment for FTN PZ-4 and FTN PZ-6 were performed by WHE with an FTN geologist on-site to document the work. Abandonment activities adhered to procedures recommended by EPA (1991) and those required by AWWCC. The temporary fence posts and protective netting around each piezometer were removed prior to abandonment activities. The 1-inch-diameter PVC casing, well screen, and end caps were removed by overdrilling using sonic drilling techniques and a 4-inch-diameter core barrel. The boreholes were backfilled using slow-release bentonite pellet plugs from the total drilled depth to the ground surface. Specifically, FTN PZ-4 was backfilled from a total depth of 45 ft below ground surface (bgs), and FTN PZ-6 was backfilled from ft bgs. The pellets were added slowly and periodically tamped to prevent bridging. Potable water was added following pellet installation to hydrate the pellets in place. 4.0 SURVEY Each new monitoring well was surveyed by Harmon Surveying, Inc., an Arkansas-registered professional surveyor. A site map depicting the surveyed locations of the new wells and the certified April, 17, survey report are included as Attachment 2. The survey report includes the horizontal and vertical coordinates based on Entergy s site-referenced coordinate system. The report also provides horizontal coordinates in the Arkansas State Plane Coordinate System, North American Datum of 1983 (NAD 83). The site-referenced vertical coordinates are equivalent to the North American Vertical Datum of 1988 (NAVD 88). The surveyed elevation data and general well construction details for each new well are provided in Table 1.

5 Tammie J. Hynum May 31, 17 Page 4 Table 1. Monitoring well construction details. Top of Casing (TOC) Elevation (ft NAVD 88) Ground Surface Elevation (ft NAVD 88) Total Depth (ft below TOC) Screened Interval (ft NAVD 88) Well ID Stratum I MW-8S MW-12S Stratum III MW-D MW-12D MW-13D MW-14D MW-15D WELL DEVELOPMENT The new wells were developed by circulating potable water into the well to break down the well bore skin along the screened interval. Immediately following this procedure, the wells were purged to remove the added water. This method was used because conventional methods of well development, such as surging and overpumping, are ineffective due to the low-yielding capacity and high-fines content of the target zone sediments. FTN developed the wells February 15, 17, through March 2, 17. Well development records are included as Attachment 3. If you have any questions regarding this technical memorandum, or require any additional information, please do not hesitate to contact me at (1) or Paul Crawford, PE, PG, at (1) DLD/hlf Attachments CC: Mr. Tracy Johnson; Entergy Services, Inc. (with attachments) Mr. Trip Gentry; Entergy Services, Inc. (with attachments) Mr. Stan Chivers, Entergy Services, Inc. (with attachments) R:\WP_FILES\ \CORRESPONDENCE\L-T HYNUM WELL INSTALLATION REPORT\TM-T HYNUM DOCX

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7 ATTAMENT 1 Well Construction Details and Boring Logs

8 0 CL ML ML/CL /ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case 23.0 ft below TOC 6.48 ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP/DLD Continuous with ft 4 in diameter core barrel 2/9/17 2/13/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description SILTY CLAY, yellowish orange to light brown, with rounded gravel (~ 1 in), soft to medium stiff, moist. FAT CLAY, tan with red iron oxide staining, with rounded gravel (~ 2 in), very stiff. SILTY SAND, very fine-grained, tan, soft to medium stiff, dry to ft, with increased silt content, tan with orange mottles, very 19 ft, with few clay lenses. SILT, greenish gray, with some thin clay lenses, medium stiff to soft, moist. SILT and CLAY, laminated, light gray to olive gray, stiff, dry. FAT CLAY, greenish gray, laminated with light gray silt, stiff, dry. BORING ID: MW-8S WELL ID: MW-8S NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft ft % REC Well Construction 0 Above ground completion includes 2x2 ft concrete pad, four pipe bollards, and locking outer aluminum casing ft of 2 in Sch. PVC including 2.8 ft of stickup (vented below cap) Cement/bentonite grout from 0 to 4 ft bgs Bentonite seal from 4 to 7 ft. bgs Silica size / filter pack from 7 to.2 ft bgs ft of 2 in dia. 0.0 in slot, Sch PVC 0.18 ft 2 in dia. Sch PVC end cap Drilling terminated at ft bgs NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). 1

9 0 FILL ML CL ML /ML ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case 49.8 ft below TOC ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP Continuous with ft 4 in diameter core barrel 2/21/17 2/22/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. SILT, brownish tan, rootlets, soft, moist. LEAN CLAY, light brown with rootlets and rounded gravel (~ 1 in), medium stiff, moist. FAT CLAY, gray with reddish-brown mottles, very stiff, moist. SILT, light gray to tan with orange mottles, laminated with clayey silt and sandy silt, very stiff, dry to moist. FAT SANDY CLAY, light gray to olive gray, sand is very fine-grained, very stiff, 12.5 to 13.5 ft, with organic 13.5 ft, with dark brown sandy lenses and greenish gray silt lenses, very stiff, moist. SILTY SAND, very fine-grained, light to dark brown, with iron oxide staining, few thin clay lenses, loose to medium dense, moist. FAT CLAY and SANDY SILT, olive gray fat clay laminated with greenish grey sandy silt. Clay layers are very stiff, silty sand layers are medium dense. SILTY SAND, very fine-grained, with some clay, dark brown with dark brown organic matter, medium stiff, moist. FAT CLAY, olive gray transitioning to greenish gray with depth some sandy lenses, with dark brown organic matter/old roots, very dense, moist. SILTY SAND, very fine-grained, tan to brown with some iron oxide staining, dense, 35 ft, olive gray to light gray, with small amounts of organic 39 ft, with some clay laminations. SILT, with very fine-grained sand, light grey, decreasing sand with depth, soft to stiff, moist. BORING ID: MW-12S WELL ID: MW-12S NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft ft % REC Well Construction 0 Above ground completion includes 2x2 ft concrete pad, four pipe bollards, and locking outer aluminum casing ft of 2 in Sch. PVC including 2.8 ft of stickup (vented below cap) Concrete cement from 0 to 2.5 ft bgs Cement/bentonite grout from 2.5 to 27 ft bgs Bentonite seal from 27 to 34 ft bgs Silica size / filter pack from 34 to 47 ft bgs ft of 2 in dia. 0.0 in slot, Sch PVC 0.18 ft 2 in dia. Sch PVC end cap Drilling terminated at 47 ft bgs Soils descriptions are based on the soil log for MW-12D, located 12 ft from MW-12S. Soils were continuously sampled and logged at MW-12D using a 4-in core barrel. Samples from MW-12S were visually observed to verify that MW-12S was advanced in similar soils logged for MW-12D NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). 1

10 0 FILL ML ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case * 84.4 ft below TOC ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP Continuous with ft 4 in diameter core barrel 2/22/17 2/23/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. SANDY CLAYEY SILT, orangish gray, less clay with depth, medium dense, dry to moist. SILTY SAND, yellowish orange transitioning to tan with depth, orange mottles, medium dense to loose, moist. SANDY CLAYEY SILT, light gray sandy silt with olive gray lenses of clay that increase with depth, medium stiff, ft, dark olive clay lenses interbedded with silt, very stiff, moist. FAT CLAY, olive gray, with laminations of silt and very fine-grained sand, sand content decreases with depth, hard to very stiff, dry to somewhat moist. BORING ID: MW-D WELL ID: MW-D NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft ft % REC 0 0 Well Construction 0 Above ground completion includes 3x3 ft concrete pad, four pipe bollards, and locking outer steel casing ft of 4 in Sch. PVC including 3.0 ft of stickup (vented below cap) Concrete cement from 0 to 4 ft bgs Cement/bentonite grout from 4 to 25 ft 35 to ft, sand content increases with depth, hard to very stiff, dry to somewhat moist. ft, color changes from olive gray to dark 48 ft, color changes to dark olive gray. 0 Bentonite seal from 25 to 68 ft 57 to ft. transitions to FAT SANDY CLAY, hard to very stiff, dry to somewhat moist. CLAYEY SAND to SILTY SAND, light gray to olive gray, dense, moist. 0 SC/ CL 69 ft, very dark gray. LEAN SANDY CLAY, gray to olive gray, fine-grained, varved, moist. CLAYEY SAND to SILTY SAND, very dark gray to olive gray, laminated clayey sand and silty sand, fine-grained, dense to medium dense, to 81 ft, clay lenses thicken with depth. FAT CLAY, olive gray clay with thin lenses of light gray fine-grained sand and silt, hard to very stiff, moist to somewhat dry Silica size / filter pack from 68 to 81.4 ft bgs ft of 4 in dia. 0.0 in slot, Sch PVC 0.1 ft 4 in dia. Sch PVC end cap Drilling terminated at ft bgs NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). * in temporary outer casing was drilled to 25 ft bgs 1

11 0 FILL ML CL ML /ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case * ft below TOC ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP/DLD Continuous with ft 4 in diameter core barrel 2/12/17 2/21/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. SILT, brownish tan, rootlets, soft, moist. LEAN CLAY, light brown with rootlets and rounded gravel (~ 1 in), medium stiff, moist. FAT CLAY, gray with reddish-brown mottles, very stiff, moist. SILT, light gray to tan with orange mottles, laminated with clayey silt and sandy silt, very stiff, dry to moist. FAT SANDY CLAY, light gray to olive gray, sand is very fine-grained, very stiff, 12.5 to 13.5 ft, with organic 13.5 ft, with dark brown sandy lenses and greenish gray silt lenses, very stiff, moist. SILTY SAND, very fine-grained, light to dark brown, with iron oxide staining, few thin clay lenses, loose to medium dense, moist. FAT CLAY and SANDY SILT, olive gray fat clay laminated with greenish grey sandy silt. Clay layers are very stiff, silty sand layers are medium dense. SILTY SAND, very fine-grained, with some clay, dark brown with dark brown organic matter, medium stiff, moist. FAT CLAY, olive gray transitioning to greenish gray with depth some sandy lenses, with dark brown organic matter/old roots, very dense, moist. SILTY SAND, very fine-grained, tan to brown with some iron oxide staining, dense, 35 ft, olive gray to light gray, with small amounts of organic 39 ft, with some clay laminations. BORING ID: MW-12D WELL ID: MW-12D NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft ft % REC Well Construction 0 Above ground completion includes 3x3 ft concrete pad, four pipe bollards, and locking outer aluminum casing. 3.2 ft of 4 in Sch. PVC including 2.8 ft of stickup (vented below cap) Concrete cement from 0 to 2.7 ft bgs Cement/benontite grout from 2.7 to ft bgs ML /ML SILT, with very fine-grained sand, light grey, decreasing sand with depth, soft to stiff, 48 to ft. increasing clay content, medium stiff, moist. FAT CLAY and SILT, olive gray fat clay with laminations of light gray sandy silt, medium stiff, moist. FAT CLAY, olive gray with light gray silt lenses that decrease with depth, very stiff to hard, dry to somewhat moist. 0 to.5 ft, blocky texture, organic matter. ft, silt lenses thicken but become sparse, very stiff to hard, dry to somewhat moist. 0 Bentonite seal from to 97 ft ft, homogeneous texture with no silt lenses SC /CL SC/ NOTES: CLAYEY SAND, fine-grained, dark grey to olive gray, poorly graded, moist. FAT CLAY to LEAN CLAY, olive gray with light gray silt lenses that thicken and decrease in frequency with depth, very stiff to hard, dry to somewhat moist. CLAYEY SAND to SILTY SAND, fine-grained, very dark gray to olive gray, decreasing clay with depth, medium dense, moist to wet. SILTY SAND, light gray and poorly graded, very loose, moist to wet. FAT CLAY, olive gray with light gray silt lenses that decrease with depth, very stiff to hard, dry to somewhat moist Silica size / filter pack from 97 0 to 111ft bgs ft of 4 in dia. 0.0 in. slot, Sch PVC ft 4 in dia. Sch PVC end cap Drilling terminated at 1 ft bgs 1 Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). * in temporary outer casing was drilled to 54 ft bgs

12 0 FILL PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case 46.9 ft below TOC 8.36 ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP Continuous with ft 4 in diameter core barrel 2/23/17 2/24/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. FAT CLAY, oxidized orange, laminated with light gray clayey fine-grained sandy silt, silt content increases with depth, rootlets, soft, very 2.7 ft, SANDY CLAY, yellowish orange with lenses of fine-grained sandy silt that are light gray with bright orange mottling, very soft, 15 ft, with fine-grained sand, tan with bright orange limonite stained silts and fine-grained sand, some subrounded to rounded fine-grained gravel to 17 ft, medium stiff, 17 ft, color changes to very dark 22ft, dark olive gray with very little sand or silt, very hard, dry. BORING ID: MW-13D WELL ID: MW-13D NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: 1.7 ft 5.46 ft % REC 0 0 Well Construction 0 Above ground completion includes 3x3 ft concrete pad, four pipe bollards, and locking outer aluminum casing ft of 4 in Sch PVC including 3.8 ft of stickup (vented below cap) Cement/benonite grout from 0 to 11 ft bgs Bentonite seal from 11 to 29.5 ft bgs SC SC/ CLAYEY SAND, dark olive gray with lenses of dark gray-green sand and light gray sand, dense, moist. SILTY SAND, fine-grained, olive gray with thin layers of clayey sand, loose to medium dense. CLAYEY SAND to SILTY SAND, dark olive gray with lenses of dark gray-green sand and light gray sand, with organic matter and dark gray-green clay layers that increasing with depth, dense, moist. FAT CLAY with sand, olive gray with lenses of light grey fine-grained sand and silt, clay thickness increases with depth, very stiff, moist. 0 0 Silica size / filter pack from 29.5 to 43.5 ft bgs ft of 4 in dia. 0.0 in slot, Sch PVC 0.1 ft 4 in dia. Sch PVC end cap Drilling terminated at ft bgs NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). 1

13 0 FILL ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case * 92.2 ft below TOC.55 ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP/DLD Continuous with ft 4 in diameter core barrel 2/8/17 2/13/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. SILTY SAND, very fine-grained, brownish tan, with clay lenses, ft, with orange iron oxide stains. 0 SILT, with very fine grained sand, tan with orange oxide stains, very moist to wet. FAT CLAY, dark gray, medium stiff to soft, moist, some silt in the upper ft, with thin laminations of gray silt, very stiff, moist. 0 BORING ID: MW-14D WELL ID: MW-14D NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft 3.22 ft % REC Well Construction 0 Above ground completion includes 3x3 ft concrete pad, four pipe bollards, and locking outer aluminum casing ft of 4 in Sch PVC including 2.9 ft of stickup (vented below cap) Concrete cement from 0 to 1.2 ft 32 ft, very few to no silt laminations, very stiff, moist. 0 Cement/bentonite grout from 1.2 to 22 ft ft, homogeneous texture. 0 Bentonite seal from 22 to 76 ft bgs ft, with very fine-grained ft, SANDY FAT CLAY, sand content increases with depth. SP- SILTY SAND, very fine-grained, dark gray to dark olive gray, dense, very ft, silt content decreases with depth. POORLY GRADED SAND with SILT, fine-grained, dark gray, medium dense, very moist. FAT CLAY, dark gray, with some thin laminations of gray silt, very stiff, moist Silica size / filter pack from 76 to ft bgs ft of 4 in dia. 0.0 in. slot, Sch PVC 0.1 ft 4 in dia. Sch PVC end cap Drilling terminated at 95 ft bgs NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). * in temporary outer casing was drilled to 22 ft bgs 1

14 0 FILL CL ML PROJECT: LOCATION: Entergy White Bluff Landfill DRILLING CONTRACTOR: Walker-Hill Environmental, Inc. DRILLING METHOD: TOTAL WELL DEPTH: DEPTH TO WATER: (4/3/17) FTN Project # R Sonic with 4x6 core and case * 93.3 ft below TOC 74. ft below TOC LOGGED BY: SAMPLING METHOD: DATE STARTED: DATE COMPLETED: AJP/DLD Continuous with ft 4 in diameter core barrel 2//17 2/13/17 Depth (feet) USCS Graphic Log Monitoring Well Installations DRILLING EQUIPMENT: Geoprobe 81LS Description FILL, consisting of nepheline syenite gravel. LEAN CLAY, tan, highly and thinly laminated with light tan silt and very fine-grained sand, hard, dry. SILTY SAND, very fine-grained, tan with orange mottles, some clay laminations in the upper first foot, soft, dry. SILT with fine-grained sand, light gray, highly laminated with clay with lenses of sandy silt (~ 6 in), stiff to soft, moist. BORING ID: MW-15D WELL ID: MW-15D NORTHING: EASTING: GROUND ELEVATION: TOC ELEVATION: ft ft % REC 46 0 Well Construction 0 Above ground completion includes 3x3 ft concrete pad, four pipe bollards, and locking outer aluminum casing ft of 4 in Sch PVC including 2.7 ft stickup (vented below cap) Concrete cement from 0 to 2.8 ft bgs Cement/bentonite grout from 2.8 to 45 ft bgs FAT CLAY, olive gray, thinly laminated with light gray very fine-grained sand and silt, very stiff, dry. to 45 ft, decreasing 45 to ft, increased laminations of light gray very fine-grained sand and silt, very stiff, ft, no laminations. 0 Bentonite seal from 45 to 75 ft bgs 69 ft, FAT SANDY CLAY, olive gray, very stiff, dry. /SC CL/ SC SILTY SAND to CLAYEY SAND, fine-grained, dark gray to olive gray, very dense, moist. LEAN SANDY CLAY to FAT SANDY CLAY, olive gray, very stiff, dry, CLAYEY SAND, fine-grained, olive gray, very dense, moist. FAT CLAY, highly laminated with light gray fine-grained sand and silt, very stiff, dry Silica size / filter pack from 75 to ft bgs ft of 4 in dia. 0.0 in slot, Sch PVC 0.1 ft 4 in dia. Sch PVC end cap Drilling terminated at 95 ft bgs NOTES: Horizontal and vertical data are based on the Harmon Surveying report dated March 26, 17 (AR State Plane NAD83 South and NAVD88). * in temporary outer casing was drilled to 35 ft bgs 1

15 ATTAMENT 2 Certified Survey Report and Well Location Map

16 April, 17 FTN Assoc. LTD. Attn: Dana L. Derrington, PE, PG 3 Innwood Circle, Suite 2 Little Rock, Arkansas Subject: Coordinates for New Monitoring Wells at Entergy White Bluff, Redfield, AR. Mrs. Dana Derrington: Harmon Surveying, Inc. was contracted to determine the coordinates for the Monitoring Wells at the Entergy White Bluff plant in Redfield, AR, and my determination of the coordinates are as follows: Northing Easting Plant Northing Plant Easting Top Casing Top Conc. Ground Elev. Desc MW15D MW13D MWD MW8S MW 14D MW12D MW12S These coordinates are shown as Arkansas State Plane NAD83, South Coordinates, NAVD 88, and Plant Coordinates, based on site monuments, and were surveyed using Trimble R8 GNSS and top of casing elevations were established by level loops. If you have any question or comments, please do not hesitate to call. Sincerely, Justin Dodd Harmon, AR. P.L.S # G I N G E R K E R R Y L A N E C O N W A Y, A R P H O N E : ( ) F A X : ( )

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18 ATTAMENT 3 Well Development Records

19 Prepared By: Location: Project #: AJP / JAC / EFN Entergy White Bluff Landfill FTN Well Development Log Initial Depth Initial Volume in Initial Volume Purge to H 2 O Well Turbidity Final Turbidity Added Volume* Well ID Date Developed By Time (ft) (gallons) (NTU) (NTU) (gallons) (gallons) MW 8S 2/15/17 EFN / JAC 8:00 12: > 1, > 195 MW 12S 2/27/17 AJP / JAC 9: 12: > 1, > 197 MW D 2/27/17 AJP / JAC 12:36 16: > 6 MW 12D 2/28/17 AJP / JAC 13:09 14: > 1, MW 12D 3/2/17 AJP / JAC 9: 11: > 1, > 111 MW 13D 2/28/17 AJP / JAC 8: 12: > 1, > 72 MW 14D 2/15/17 EFN / JAC 13: 14: > MW 15D 2/16/17 EFN / JAC 14:00 15: > 1, > 81 *Volumes purged are approximate. EFN / JAC Equipment: AJP / JAC Equipment: Pump: Hurricane 12V Pump: Tornado 12V on 2/27 2/28; Hurricane 12V on 3/2 Water level meter: Keck 0 ft Water level meter: Geotech 0 ft SN 2616 Turbidity meter: HF Scientific Micro TPW (177) Turbidity meter: HA P SN