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i <br /> III <br /> II �, <br /> W-2,W-3, <br /> W-5,w-61 FEET BELOW <br /> W-1, W-4 W-7,W-8 W-2A W-26 GROUND SURFACE g <br /> i <br /> o <br /> 10 <br /> 20 <br /> t� <br /> 30 <br /> 50 <br /> B0 C. <br /> 70 <br /> a 8° 80 ,. <br /> e° <br /> 90 .. <br /> EXPLANATION I APPROX. DEPTH TO WATER, OC'-. 1989 x <br /> SHALLOWEST APPROX. DEPTH TO WATER SINCE E <br /> BLANK CA$ING. APR. 1987 (APR. 1987) <br /> SCREENED CASING —-- �-- GREATEST APPROX. DEPTH TO WATER SINCE <br /> r^ •� APA. 1987 (OCT. 1989) <br /> BENTONITCICEMENT GROUT DATE PF MONITORING <br /> INSTALLATION WELT_ NO. <br /> VA BENTONITE SEAL APR. 1987 W-1, W-2, W-3 , <br /> :g <br /> GRAVEL PACK JUL. 1987 W-4, W-5, W-6 <br /> NOV. 1987 W-7, W_8 <br /> JUN. 1988 W-2A, W-2B <br /> Figure 2. Monitoring Well Constructions, Dates and Depths to <br /> Groundwater, April 1987 and October 1989, p, <br /> ARCO Station 434, Lodi, CA <br /> ISI <br /> i <br />