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Well Construction Details <br /> Former Unocal Station No 5098 <br /> 5400 and 5606 Pacific Avenue <br /> Stockton, California <br /> Well Depth to Blank Screened Hydrostratigraphic Sand Bentonite Cement) <br /> Number Bottom Casing Interval Unit Pack Seal Grout <br /> tbs (ft bs (ft bgs) (ft bgs) lbs (ft bgs) <br /> Vapor Extraction and Combination Wells J <br /> -VEW-1A - `26 0 to 10 - 10t025 - _ 8 to 26 s~ 6 to 8 0 to 6 <br /> VEW-1 B - 66 - r" 0 to 25 ; -25 to 40 - A- - _ T 23 to 41-- - - --21 to 23 - '-Oto 21- - <br /> `40 to 64 64 to 65 B 62 to 66 41 to 62 <br /> VEW-2 36 0 to 15 15 to 35 A 13 to 36 10 to 13 0 to 10 <br /> VEW-2B 51 O'to 35 35 t65-0 LL A-' 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 A 38 to 51 31 to 38 <br /> VEW-4 51 Oto 20 20 to 30 -- 18 to 31 16 to 18 Oto 16 <br /> 30 to 40 40,to 50 A 38 to 51 31 to 38 ' <br /> VEW-5 51 Oto 20 20 to 30 — 18 to 31 16 to 18 Oto 16 <br /> 30 to 40 40 to 50 A 38 to 51 31 to 38 <br /> VEW-6 60 Oto 10 10 to 30 — 9to31 7to9 Oto7 , <br /> T� 0 to 55 55 to 60 B 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 /> 0to545 _ 545to595 __ B 53 to 595 465to53 <br /> VEW-8 60 0to10 10 to 30 — 9to31 7to9 0to7 <br /> 0to545 545to595 B 52 to 595 47 to 52 <br /> VEW-9 60 _ _ Oto 10 10 to 30 -- '' 95to31- '-7to95 - Oto7 ' <br /> O to 54 5 54 5 to 59 5 B 53 to 59 5 47 25 to 53 <br /> VEW 10 60 0to10 10 to 30 -- 9to31 75to9 0to75 <br /> Oto 545 545to595 B 52 to 595 48 to 52 <br /> VEVV-1 1 60 0 to 10 1 in to ;n 1 Q to '41 1 7 to 4 n to 7 <br /> _ Oto 545 545to595 B 525to595 475to525 <br /> -VEW-12 60 --O-to 10 --10 to 30 -- 9 to 31 6 to 9 0 to 6 - <br /> 0 to 55 55 to 60 B 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 /> -- _. T-O to 55_-- ..-55 to 6O T_ 52 to 60 _—47 to 52 _ --_ ,— <br /> '°bgs= below ground surface <br /> ' Destroyed in July 2004 MW-9R replaced MW-9 <br /> Hydrostratigraphic Units screened approximately as follows <br /> A= 25 to 45 feet below grade surface {bgs} <br /> B = 45 to 65 feet bgs <br /> C = 85 to 90 feet bgs <br /> D = 97 to 103 feet bgs <br /> --= Screened above the upper hydrostratigraphic unit <br /> 06940-293 2 of 2 ENSR Corporation <br />