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oF-DMATRIX <br /> TABLE 4 <br /> WELL SURVEYING AND GROUNDWATER ELEVATION DATA <br /> U.S. Can/Welty Road <br /> Vernalis, California <br /> Depth to Thickness of <br /> Top-of-Casing Water Below Water Level Separate Phase <br /> Elevation' Top-of-Casing Elevation Petroleum <br /> Well Northing Lasting (feet,MSL) Date (feet) (feet,MSL) (feet) <br /> MW-1 2053098.2 6333463.6 104.42 6/1/99 31.62 72.80 0.02 <br /> 5121102 NM' NM 0.01 <br /> MW-2 2053439.5 6333177.2 103.11 611199 30.12 72.99 0.02 <br /> 5121102 32.44 70.67 sheen' <br /> MW-3 2053030.1 6333523.4 104.21 611199 31.30 72.91 none <br /> 5/21/02 33.74 70.47 none <br /> MW-4 2052746.6 6333543.3 105.32 6/1/99 32.23 73.09 none <br /> 5/21/02 34.81 70.51 none <br /> WFSMW-1 NAS NA 105.31 611/99 NM NM NM <br /> 5121102 34.56 70.75 none <br /> Notes: <br /> i Wellhead elevations and groundwater elevations were based on the National Geodetic Vertical Datum of 1929 (NGVD29). The horizontal <br /> datum is based on the North American Datum of 1983 (NAD83). The benchmark used was United States Coast and Geodetic Survey brass <br /> disk with NGS designation"M-745"(PID Number MS0037),elevation of 104,18 feet(NGVD29), <br /> z Monitoring well elevation in feet above mean sea level(MSL) based on benchmark elevation surveyed by RGA, July 1998, <br /> 3 NM=Not measured. <br /> Immeasurable sheen noted in well. <br /> 5 Not available <br /> i:\doc_safe16000s16447.0011reporUus can tbls.xls <br />