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MITTELHAUSER <br /> corporation <br /> Unocal Corporation July 1992 <br /> Tracy, California Rev 0 <br /> Quarterly Monitoring & Sampling Report 1745TO02 wkl <br /> TABLE 1 <br /> GROUNDWATER MONITORING DATA <br /> WELL MONITORING ELEVATION AT DEPTH TO POTENTIOMETRIC FREE <br /> NUMBER DATE TOP OF CASING GROUNDWATER SURFACE PRODUCT <br /> (Feet) (Feet, MSL) (Inches) <br /> MW-1 07/12/91 15.34 9.57 5.77 <br /> 12/11191 1534 NR NR -- <br /> 03/13/92 15.34 8.62 672 -- <br /> 06/10/92 1534 954 5 80 -- <br /> MW-2 07112/91 i 14.71 9.13 558 -- <br /> 12/11/91 1471 904 567 -- <br /> 03113192 1471 831 640 -- <br /> 06/10/92 1471 909 562 -- <br /> MW-3 07121191 15.26 988 538 <br /> 12/11/91 1526 982 544 -- <br /> 03/13/92 1526 8.66 660 --- <br /> 06/10/92 1526 967 559 -- <br /> MW-4 07/12/91 14.03 8.65 538 <br /> 12/11/91 1403 859 544 -- <br /> 03/13/92 14.03 7.80 623 - -- <br /> 06/10/92 1403 862 541 -- <br /> NOTES <br /> All measurements are with reference to top of PVC casing of each well <br /> = None Present <br /> NR = Not Recorded <br /> Elevations of wellheads were surveyed by Triple E Engineering, a Licensed <br /> Surveyor, on July 10, 1991 using U S Geological Survey datum <br />