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• � 4 1� f <br /> 1 <br /> SIERRA <br /> Table 5 Water Level Data and Well Construction Details - Chevron Service Station 49-6171, 6633 Pacific Avenue, Stockton, <br /> California. (continued) <br /> Well Date DTW TOC GWE Product Screen Sand Pack Bentonite/Grout <br /> ID Measured (ft) (ft) (msl) Thickness* Interval Interval Interval <br /> (ft} <----------------feet below grade---------------------------> <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 5474 1251 -4223 0 49 - 69 46 - 69 0 - 46 <br /> 11/29/90 5502 -4251 0 <br /> 3/14/91 5525 -4274 0 <br /> 6/6/91 55 11 -4260 0 <br /> 8/29/91 5577 -4326 0 <br /> 12/6/91 5458 -4207 0 <br /> 3/12/92 5353 -4102 0 <br /> 6/11/92 5474 -4223 0 <br /> MW-6 --- --- --- --- --- 50- 70 48 - 70 0 - 48 <br /> EXPLANATION NOTES <br /> DTW= Depth to water TOC elevations were surveyed by Ron Miller Licensed Land Surveyor, <br /> TOC =Top of casing elevation CE#15816 on September 5, 1990 <br /> GWE=Ground water elevation <br /> msl=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 ilexi-dip interface probe <br /> 14604T WL <br />