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TABLE 1 <br /> Well Construction and Proposed Well Destruction Details <br /> Chevron Facility#94275 and ARCO Service Station No.2133 <br /> 2905 and 2908 West Benjamin Holt Drive,Stockton,CA <br /> Boring Borehole Casing Cement Seal <br /> Construction Elevation Slot Size' Screened Interval Filter Pack Interval Bentonite Seal Interval Proposed Well Destruction <br /> (TOC feet) s) <br /> Well I.D. Date Depth Diameter Diameter Casing Material Interval(feet _ <br /> (feet bgs) (inches) (inches) (inches) (feet bgs) (feet bgs) (feet bgs) bgs) Method <br /> CHEVRON <br /> Monitoring Wells(MW) <br /> MW-6 3/3/92 2.50 31.5 8 2 PVC 0.020 10-30 8-31.5 6-8 0-6 Over-drill <br /> MW-8 12/13/93 2.26 31.5 8 2 PVC 0.020 10-30 9-31.5 7-9 0-7 Over-drill <br /> MW-1R 3/1/06 3.47 60 6 2 PVC 0.010 5-20 4-23 3-4,23-25 0-3,25-60 Over-drill <br /> MW-2R 2/27/06 4.07 65 6 2 PVC 0.010 5-20 4-23 3-4,23-25 0-3.25-65 Over-drill <br /> MW-3R 2/28/06 4.02 59 6• 2 PVC 0.010 5-20 4-23 3-4,23-25 0-3,25-65- Over-drill <br /> MW-5R 6/5/06 4.49 20 4.25 2 PVC - 5-20 4-20 2-4 0-2 Over-drill <br /> MW-7R 6/5/06 4.13 20 4.25 2 PVC 5-20 4-20 2-4 0-2 Over-drill <br /> g MW-9R 6/5/06 2.76 20 4.25 2 PVC 5-20 4-20 2-4 0-2 Over-drill <br /> MW-10 6/11/07 2.95 20 4.25 2 PVC 0.020 5 20 4-20 2-4 0-2 Pressure-grout <br /> ARCO _ <br /> Monitoring Wells(E,BHD,PR,MW) <br /> E-2 5/24/84 3.92 21.5 3 PVC 6-21 5-21 1-5 0-1 Over-drill <br /> E-3 5/24/84 3.34 25 4 PVC 17-24 5 24 1-5 0-1 Overr drill <br /> E-4 5/24/84 3.32 29.5 3 PVC 5-22 5-22 1-5 0-1 Over-drill <br /> E-5 5/24/84 3.49 21 3' PVC 5-22 3-21 1-3 0-1 Over-drill <br /> E-6 , 5/24/64 2.77 19.5 3 PVC 4.5-19.5 4-19.5. 1-4 F 0-1 Over-drill <br /> E-9 5/30/84 2.60 22.5 3 PVC 5-19.5 4-1,9 0-4 0-0 Over-drill <br /> E-10 5/30/84 2.01 25.25 3 PVC 6-25 7-25 O-7 0-0 Over-drill <br /> 3- <br /> E-11 5/30/84 4.46 24 3 PVC 4-24 3-24 0-3 0-0 Over-drill <br /> E-12 5/30/84 2.99 30 3 PVC 6-23 5-23 0-5 0-0 Over-drill <br /> 13HD-2 1/22/88 1.93 31.5 4 PVC 0.020 8-28 6-28 1-6 0-1 Pressure-grout <br /> PR-1 1/19/88 1.87 31.5 4 PVC 0.020 8-28 6-28 1-6 071Pressure-grout <br /> PR-2 1/19/88 1.72 31.5 4 PVC 0.020 8-28 6-28 1-6 0-1 Pressure-grout <br /> MW-1 10/11/93 2.31 30 10 4 PVC 0.020 10-30 B-30 5-8 0-5 Over-drill <br /> MW-2 10/19/93 2.16 28.5 10 4 PVC 0.020 8.5-28.5 6-28.5 3.5-6 0-3.5 Over-drill <br /> MW-3 12/21/94 3.33 30 10 2 PVC 0.020 9.5-29.5 - - - Over-drill <br /> MW-5 12/22/94 2.01 30 10 2 PVC 0.020 10-30 Over-drill <br /> Well Construction and Proposed Well Destruction details.xls Page 1 of 2 Stantec <br />