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MPDS-UNG348-04 <br /> Page 2 of 5 <br /> TABLE L Continued <br /> SUMMARY OF MONITORING DATA <br /> The depth to water level and total well depth measurements were taken from <br /> the top of the well casings <br /> * Monitored only <br /> ** The elevations of the top of the well casings have been surveyed relative <br /> to Mean Sea Level (MSL) , per USC&GS Benchmark P1121 (elevation = 8 95 ft <br /> MSL) Prior to June 8 , 1994 , the well elevations relative to the U S <br /> Geological Survey datum were MW-1 = 15 34 ft , MW-2 = 14 74 ft , MW-3A = Not <br /> Available, and MW-4 = 14 03 ft <br /> N/A = Not Applicable <br />