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TABLE 1 Well Construction and Proposed Well Destruction Details Chevron Facility#94275 and ARCO Service Station No.2133 2905 and 2908 West Benjamin Holt Drive,Stockton,CA Boring Borehole Casing V Cement Well I.D. S Construction Elevation Depth Diameter Diameter Casing Material Slot Size Screened Interval Filter Pack Interval Bentonite Seal Interval Interval(feet Proposed Well Destruction Date (TOC feet) (feet bgs) (inches) - (inches) (inches) (feet bgs) (feeYbgs) (feet bgs) bgs) Method Remediation Wells(R,V,S) R-1 7/24/84 - 42 12 PVC - 9-35 8-40 - - Over-dell V-1 10/13/93 1.94 24 10 4 PVC 0.030 4-24 3-24 273 0-2 Over-drill V-2 10/12/93 1.47 25 10 4 PVC 0.030 4-24 3-25 2-3 0-2 Over-drill V-3 10/12/93 1.56 25 10 4 PVC Ot030 4-24 3-25 2-3 0-2 Over-drill V-4 10/14/93 2.24 25 10 4 PVC 0.030 4-24 3-24 273 0-2 Over-drill V-5 10/18/93 3.26 25 10 4 PVC 0.030 4.5-24.5 `3.25 2-3 0-2 Over-drill ti V-6 10/14/93 2.34 23 10 4 , PVC 0.030 . 3-23 2-23 1-2 0-1 Over-drill V-7 10/15/93 2.16 25 10 4 PVC 0.030 4-24 3-24 2-3 0-2Over-drill V-8 8/15/94 21.5 10 2 PVC '0.030 6-21 5-21 3-5 20-3 Over-drill' V-9/S-7 8/15/94 31.5 - 1 PVC 0.020 6-21/27.5-30 5-21/26.5-30 35/21-26.5 0-3 Over-drill V-10/S-8 8/16/94 31.5 - 2/1 PVC 0.020 6-21/27.5-30 5-21/26.5-30 3-5/21-26.5 0-3 Over-drill V-11 8/15/94 2.95 21.5. 10 2 PVC 0.030 .5-21 421 2-4 0.2 Over-drill V-12 8/16/94 1.21 21.5 - 2 PVC 6-21 5-21 -35 0-3 Over-drill S-1 10/12/93' 0.90 25 1 PVC Sch.40 0.020 22-24 19-25 14-19 0-14 Over-drill S-2 10/13/93 1.75 25 1 PVC Sch.40 0.020 2325 20-25 15-20. 0-15 Over-drill. S-3 10/15/93 2.30 25 1 PVC Sch.40, 0.020 2325 19-25 12-19 0-12 Over-drill S-4 10/15/93: 1.39 24.5 6 1 PVC'Sch.40 0.020 22-24 18.5-24 15.5-18.5 0.15.5 Over-drill S-5 10/18/93 2.58 24.5 6 1 PVC Sch.40 0.020 20-22 19-24 15-19 0-15 Over-drill S-6 10/19/93 • 4.25 -25 1 PVC Sch.40 r 0.020 2325• 20-25 16-20 0-16 Over-drill S-9 8/16/94 1.73 30 1 PVC Sch.40 0.020 27.5.3D 26.5-30 21-26.5 0-21 Over-drill Soil Borings AS-8 2/23/06 65 6 . . 0-61- AS-9 2/24/06 67.5 6 - 0-65 8 AS-10 2/27/06 63 6 0-63 AS-1-1 3/2/06 25 6 - 0-25 Notes: bgs=below ground surface TOC=top of casing PVC=polyvinyl chloride - -- s Sch.=Schedule - • - - _ ._ .. - . Filter Pack is with#3 sand =Not Available/Not Applicable Elevations are in US survey feet Well Construction and Proposed Well Destruction details.xls Page 2 of 2 Stantec i