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i <br /> Page 2 <br /> January 9 , 1996 <br /> All elevations are mean sea level , USC&GS 1929 datum Elevations <br /> were determined from a USC&GS bench mark "TRACY 1943" , being a <br /> bronze disc set in 10" square concrete post located in a small <br /> triangular landscape plot at the southwest corner of the Tracy High <br /> School athletic field having an elevation of 47 . 86 feet An <br /> elevation survey loop was run from this found bench mark to the <br /> City of Tracy centerline monument at 10th & E Streets and closed <br /> back to bench mark "Tracy" . Error of closure was 0 01 feet . <br /> Elevation of 49 . 40 feet was determined for the City of Tracy <br /> centerline monument at 10th & E Street and was used to determine <br /> the elevations of above monitoring wells <br /> Larry N. McDowell , p L. S No 4566 <br /> L'F CALSF���\� <br /> attachment <br /> i <br /> I <br /> I <br /> I <br /> I <br />