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i' <br /> H2qGEOLo <br /> A GRPUND WATER CONSULTANCY <br /> t <br /> E <br /> Local Oversight Program March 19, 200 . <br /> San Joaquin County 1� �Ir �,�U <br /> G�ECL <br /> Department of Health Services <br /> ��U ti , <br /> P.O. Box 2009 <br /> Stockton; CA 95201ENVIRONMENI HLA- JH <br /> MAR 2 7 Z002 <br /> PERMIT/SERVICH <br /> 'RE: First Quarter, 2002 Groundwater Monitoring Report- Underground Storage Case <br /> Former Cheaper! #37, 15 Grant Line Road, Tracy, San Joaquin County <br /> i - <br /> Dear Local Oversight Program; <br /> This First Quarter, 2002 Groundwater Monitoring Report is submitted by H2OGEOL on <br /> behalf of The Customer Company for the former Cheaper! Store#37, 15 Grant Line <br /> Road in Tracy, San Joaquin County, California. The site location is shown on Figure 1 <br /> i l and is now More for Less 437. The First Quarter, 2002 groundwater monitoring event # <br /> occurred on February 24, 2002. 1 <br /> 1.0 POTENTIOIVIETRIC SURFACE <br /> Depth to water in each monitoring well was measured to +/- 0.01 feet using a Solinst <br /> Model water Ievel meter between 13:30 and 13:36 on February 24, 2002. The depths to <br /> water were converted to potentiometric surface elevation by subtracting the measured <br /> r depths to water from the casing top elevations derived from the well survey performed in <br /> 1995 by Benc mark Consultants.The depth to water, casing top elevations, and <br /> potentiometric surface elevations are presented in Table 1. All available previous.water <br /> level measurements are summarized in Table C1 in Attachment C. <br /> Figure 2 is a map showing the approximate potentiometric surface for the monitoring <br /> wells at the site on February 24, 2002. Table 2 lists the slope(gradient)'and direction{.pf <br /> gradient of the potentiometric surface for each of the triangles°with a well;at each apex. <br /> The site average gradient of the po�Mtiometric surface was 0.0024 feet per foot The site <br /> average gradient direction was oriented N 17.9°W. <br /> All available previous potentiometric surface sloe <br /> p p p (gradient)and direction of gradient } <br /> information are summarized in Table C2 in Attachment C. <br /> P.O.Box 2165 ■ Livermore,California 94551-2165 ■ (925)373-9211 <br />