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TABLE 1 Soil Boring and Well Construction Details Stockton Charter Way Commingled Plume 440, 441, and 508 West Charter Way, 1426 and 1444 South Lincoln Street, Stockton, CA TOC Borehole Casing Bentonite Seal Cement Seal Water- Installation Destruction Total Depth Casing Slot Size Screened Interval Filter Pack Interval Location ID Elevation Diameter Diameter Interval Interval Bearing Comments Date Date (feet) (feet bgs) (inches) (inches) Material (inches) (feet bgs) (feet bgs) (feet bgs) (feet bgs) Zone CMW-76 1/18-23/08 12.07 38 14/8 2 SCH.40 PVC 0.010 33-38 31-38 29-31 0-29,0-29 A CMW-7C 1/17-24/08 12.06 60 14/8 2 SCH.40 PVC 0.010 50-60 47.9-60 45.9-47.9 0-43.5,0-45.9 B CMW-8C 07/08/15 11.97 90 8.25 2 SCH.40 PVC 0.010 80-90 77-90 75-77 0-77 C Air Sparge Wells(AS) AS-1 10/31/11 - 44.5 10 2 SCH.40 PVC 0.020 39-41 37-41.5 34-37 0-34 41.5-44.5 ft bgs filled with sluff AS-2 11/04/11 30.5 10 2 SCH.40 PVC 0.020 25-27 23-27.5 20-23,28-30.5 0-20 27.5-28 ft bgs filled with sluff AS-3 10/22/12 39 10 2 SCH.40 PVC 0.020 35-37 33-39 31-33 0-31 AS-4 10/22/12 38 10 2 SCH.40 PVC 0.020 34-36 32-38 30-32 0-30 AS-5 10/23/12 37 10 2 SCH.40 PVC 0.020 31-33 29-35 27-29,35-37 0-27 AS-6 10/18/12 34.5 10 2 SCH.40 PVC 0.020 28-30 26-32 24-26,32-34.5 0-24 AS-7 10/19/12 32 10 2 SCH.40 PVC 0.020 28-30 26-32 24-26 0-24 AS-8 10/17/12 41 10 2 SCH.40 PVC 0.020 30-32 28-34.5 26-28,34.5-41 0-26 AS-9 10/17/12 36 10 2 SCH.40 PVC 0.020 32-34 30-36 28-30 0-28 AS-10 10/23/12 38.5 10 2 SCH.40 PVC 0.020 34-36 32-38.5 30-32 0-30 AS-11 10/19/12 32 10 2 SCH.40 PVC 0.020 28-30 26-32 24-26 0-24 AS-12 10/24/12 37 10 2 SCH.40 PVC 0.020 33-35 31-37 29-31 0-29 Vapor Extraction Wells(VE) VE-1 11/04/11 16.5 10 4 SCH.40 PVC 0.020 11-16 9-16.5 6-9 0-6 VE-2 10/16/12 16 10 4 SCH.40 PVC 0.020 10.5-15.5 10-16 7-10 0-7 VE-3 10/16/12 17 10 4 SCH.40 PVC 0.020 11.5-16.5 11-17 8-11 0-8 VE-4 10/15/12 16 10 4 SCH.40 PVC 0.020 10.5-15.5 10-16 7-10 0-7 VE-5 10/16/12 16 10 4 SCH.40 PVC 0.020 10.5-15.5 10-16 7-10 0-7 VE-6 10/15/12 16 10 4 SCH.40 PVC 0.020 10.5-15.5 10-16 7-10 0-7 Piezometers(PZ) PZ-1 11/04/11 16.5 10 4 SCH.40 PVC 0.020 11-16 9-16.5 5.5-9 0-5.5 PZ-2 11/04/11 16.5 10 4 SCH.40 PVC 0.020 11-16 9-16.5 5.5-9 0-5.5 Cone Penetrometer Test(CPT) CPT-1 07/23/05 73 - - - - - - - CPT-2 07/20/05 87 CPT-3 07/20/05 92 CPT-4 07/19/05 88 CPT-5 07/18/05 60 CPT-6 07/23/05 59 CPT-7 07/23/05 57 CPT-8 07/21/05 100 CPT-9 07/21/05 58 CPT-10 07/23/05 67 Soil Borings(SB,C,and CT) SB-1 02/07/96 41.5 0-41.5 SB-2 02/07/96 41.5 - 0-41.5 C1 05/01/07 44 2.25 0-44 C2 05/02/07 44 2.25 0-44 C3 05/02/07 46 2.25 0-46 C4 05/03/07 46 2.25 0-46 Stockton Charter Way Commingled Plume Soil Boring and Well Construction Details.xls Page 4 of 8 Stantec