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TABLE 4 <br /> WELL CONSTRUCTION DETAILS <br /> Wards and Unocal Wells <br /> VAPOR EXTRACTION AND COMBINATION WELLS Page 2 oft <br /> Well Depth to Blank Screened Sand Bentonite Cement/ <br /> Number Bottom Casing Interval Pack Seal Grout <br /> (in feet bgs*) (in feet bgs) (in feet bgs) (in feet bgs) (in feet bgs) (in feet bgs) <br /> VEW-lA 26 0 to 10 10 to 25 8 to 26 6 to 8 0 to G <br /> VEW-1B 66 0 to 25 25 to 40 23 to 41 21 to 23 0 to 21 <br /> 40 to 64 64 to 65 62 to 66 41 to 62 <br /> VEW-2 36 0 to 15 15 to 35 13 to 36 10 to 13 0 to 10 <br /> VE7W-2B 51 0 to 35 35 to 50 33 to 51 31 to 33 0 to 31 <br /> VEW-3 51 0 to 20 20 to 30 18 to 31 16 to 18 0 to 16 <br /> 30 to 40 40 to 50 38 to 51 31 to 38 <br /> VEW-4 51 0 to 20 20 to 30 18 to 31 16 to 18 0 to 16 <br /> 30 to 40 40 to 50 38 to 51 31 to 38 <br /> VEW-S 51 Oto 20 20 to 30 18 to 31 16 to 18 Oto 16 <br /> 30 to 40 40 to 50 38 to 51 31 to 38 <br /> VEW-6 60 0 to 10 10 to 30 9 to 31 7 to 9 0 to 7 <br /> 0 to 55 55 to 60 53 to 60 47 to 53 <br /> VEW-7 60 0 to 10 10 to 30 9 to 31 7 to 9 0 to 7 <br /> Oto 545 545to595 53 to 595 465to53 <br /> VEW-8 60 0 to 10 10 to 30 9 to 31 7 to 9 0 to 7 <br /> 0 to 54 5 54 5 to 59 5 52 to 59 5 47 to 52 <br /> VEW-9 60 Oto 10 10 to 30 95to31 7to95 Oto? <br /> Oto 545 545to595 53 to 595 4725to53 <br /> VEW-10 60 0to10 10 to 30 9to31 75to9 0to75 <br /> Oto 545 545to595 52 to 595 48 to 52 <br /> VEW-11 60 1 Oto 10 10 to 30 9to31 7to4 10to7 <br /> 0to545 545to595 525to595 475to525 <br /> VEW-12 60 0 t 10 10 to 30 9to31 6to9 0to6 <br /> 0 to 55 55 to 60 53 to 60 48 to 53 <br /> VEW-13 60 0 to 15 15 to 30 14 to 31 11 to 14 Oto 11 <br /> 0 to SS 55 to 60 52 to 60 1 47 to 52 <br /> NOTES <br /> *bgs-below ground surface <br /> N 1232 WELLDETA1L ENVIRONMENTAL AUDIT,INC pq <br />