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so-ire: h etl Re ,kvc f,o✓, Ref,-yf TABLE 1 Well Construction and Destruction Details Former 76(Former BP)Service Station No. 11195 16500 Harlan Rd. Lathrop,CA Borehole Casing Screened Filter Pack Bentonite Seal Cement Seal Construction TOC Elevation Boring Depth Casing Slot Size Well I.D. Date (feet above msl) (feet bgs) Diameter Diameter Material (Inches) Interval Interval Interval Interval Location Well Destruction Methods (inches) (inches) (feet bgs) (feet bgs) (feet bgs) (feet bgs) Groundwater Monitoring Wells MW-1 12/11/92 14.19 23.0 7 2 PVC 0.02 8-23 6-23 4-6 0-4 On Site Pressure Grout MW-2 12/11/92 13.49 23.0 7 2 PVC 0.02 8-23 6-23 4-6 0-4 On Site Overdrill MW-3 12/11/92 14.08 24.5 7 2 PVC 0.02 8-23 6-24.5 4-6 0-4 On Site Pressure Grout MW-4 12/10/92 14.10 24.5 7 2 PVC 0.02 9.5-24.5 7.5-24.5 5.5-7.5 0-5.5 On Site Pressure Grout MW-5 12/10/92 15.08 24.5 7 2 PVC 0.02 9.5-24.5 7.5-24.5 5.5-7.5 0-5.5 On Site Overdrill MW-6 09/08/93 12.66 20.0 8 2 PVC 0.02 7-20 6-20 5-6 0-5 On Site Overdrill MW-7 9/8/1993 14.27 20.0 8 2 PVC 0.02 7-20 6-20 5.6 0-5 - Previously Destroyed MW-8 08/12/98 13.30 16.5 8 2 PVC 0.01 4-14 3-16.5 2.5-3 0-2.5 Off Site PVC Extraction MW-9 08/12/98 12.98 15.0 8 2 PVC 0.01 5-15 4-15 None 0-4 Off Site PVC Extraction MW-10 08/12/98 11.32 16.5 8 2 PVC 0.01 4-14 3-16.5 2.5-3 0-2.5 On Site PVC Extraction MW-11 08/12/98 11.72 16.5 8 2 PVC 0.01 4-14 3-16.5 2.5-3 0-2.5 Off Site Pressure Grout MW-12 08/12/98 12.72 16.5 8 2 PVC 0.01 4-14 3-16.5 2.5-3 0.2.5 Off Site Overdrill MW-13 05/29/02 15.23 21.0 8 2 PVC 0.02 6-20.5 5-21 3-5 0-3 Off Site PVC Extraction MW-14 05/29/02 14.29 21.0 8 2 PVC 0.02 5-20.5 4.5-21 3-4.5 0-3 Off Site PVC Extraction MW-15 05/28/02 14.64 21.0 8 2 PVC 0.02 5-20.5 4-21 2-4 0-2 Off Site PVC Extraction MW-16 05/28/02 15.60 21.5 8 2 PVC 0.02 5-19.5 4-21.5 2-4 0-2 Off Site PVC Extraction MW-17 05/28/02 13.50 20.0 8 2 PVC 0.02 5-19.5 4-20 2-4 0-2 Off Site PVC Extraction MW-18 12/10/02 12.13 20.0 8 2 PVC 0.02 5-19.5 4.5-20 3.5-4.5 1-3.5 Off Site PVC Extraction MW-19 12/10/02 12.86 20.0 8 2 PVC 0.02 5-19.5 4-20 3-4 1-3 Off Site PVC Extraction MW-20 12/10/02 12.47 20.0 8 2 PVC 0.02 5-19.5 4-20 3-4 1-3 Off Site Pressure Grout MW-21 12/10/02 11.97 20.0 8 2 PVC 0.02 5-19.5 4-20 3-4 1-3 Off Site Pressure Grout MW-22 08/26/05 12.26 22.5 8 2 PVC 0.02 7-22 5-22 3-5 1-3 Off Site Pressure Grout MW-23 05/19/05 10.98 22.5 8 2 PVC 0.02 7-22 5-22 3-5 1-3 Off Site PVC Extraction MW-24 05/19/05 11.84 22.5 8 2 PVC 0.02 7-22 5-22 3-5 1-3 Off Site Pressure Grout CC-WS 12/1998 14.20 11.5 NA 6 PVC 0.02 NA NA NA NA On Site Overdrill Remediation Wells VP-1 1/27/2011 NA 5.3 12 0.125 PVC NA NA 3-5.3 3-1.5 1.5-1.0 On Site Overdrill VP-2 1/27/2011 NA 5.4 12 0.125 PVC NA NA 3-5.4 3.1.5 1.5-1.0 On Site Overdrill VP-3 1/27/2011 NA 5.5 12 0.125 PVC NA NA 3-5.5 3-1.5 1.5-1.0 On Site Overdrill Well Construction and Destruction Details 1 of 2 ATC Project Number 52.75118.1751