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SIERRA <br /> Table 1 Water Level Data and Well Construction Details - Chevron Service Station #9-6171, 6633 Pacific Avenue, Stockton, <br /> Cahforrua (continued) <br /> Well Date D'1W TOC GWE Product Screen Sand Pack Bentonite/Grout <br /> ID Measured (ft) (ft) (msl) Thickness* Interval Interval Interval <br /> (ft) <----------------feet below grade---------------------------> <br /> i <br /> MW-4 8/29/91 5627 -4326 0 <br /> (cont) 12/6/91 5513 -4212 0 <br /> 3/12/92 5385 -4084 0 <br /> 6/11/92 5526 -4225 0 <br /> MW-5 9/5/90 54 74 1251 -4223 0 49 - 69 46 - 69 0 - 46 <br /> 11/29/90 5502 -4251 0 <br /> 3/14/91 5525 -42 74 0 <br /> 6/6/91 55 11 -4260 0 <br /> 8/29/91 5577 -4326 0 <br /> 12/6/91 54 58 -4207 0 <br /> 3/12/92 53 53 -41 02 0 <br /> 6/11/92 5474 -4223 0 <br /> EXPLANATION NOTES <br /> 17rW=Depth to water TOC elevations were surveyed by Ron Miller, Licensed Land Surveyor <br /> TOC =Top of casing elevation CE#115816 on September 5, 1990 <br /> OWE=Ground water elevation <br /> msi=Measurements referenced relative to mean sea level Monitoring well locations and ground water elevation contours are shown on <br /> Figure 2, (Appendix A) <br /> • Product thickness was measured with an MMC flexi-dip interface probe <br /> 146047 WL <br />