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ti <br /> Table I Well Search Summary <br /> Well Number/Name Date Drilled Depth Perforations ft Seal Thickness Use Current Status <br /> Old City Ball Well Aug, 1928 130.140, 160-180 180- assumed mm 5D ft municip Assumed active <br /> T2S,R5E 2BC1 200 <br /> City of Tracy 19297 and July 120-124,127-130,145- assumed min 50 ft domes/in Assumed active <br /> Wainwright#1 1931?reported 149, 162-166,192-197 unicip <br /> T2S 5E 28A1 <br /> tJncoin Park Oct, 1948 Eighteen perf intervals assumed nun 50 ft municip Assumed active <br /> T25 R5E 2101 G1 below 127 ft <br /> City of Tracy#2 Sept 1948 23 pert intervals below 85 reported yes,assumed municip Assumed active <br /> T2S R5E 21 J 1 ft total depth=880 ft min 50 ft <br /> Half Moon Fruit&Pro April, 1954 85438, 103-105, 116- No imga Unknown <br /> T2s,R5E,27F80(1) 121,126-13.2 195-151, <br /> 15B-163,207-223 <br /> PG&E Carpenter RD April, 1988 Not recorded yes Cement Not Unknown <br /> T2S R5E 28G stated <br /> City of Tracy Norris T2S, Feb, 1926 Not recorded total yes municrp Unknown <br /> R5E,21M1 =432 ft <br /> Tracy Elem School T2S, July, 1951 74436,53D,935,545-549, yes domes/ Active? <br /> R5E 21 K1 565568 municip <br /> • Tracy High Well Date Unknown Unknown Yes? Ground Inacative <br /> T2S R5E 21 S1 I Well <br /> domes-domestic or City water use, nidus -industrial, irngat- irrigation, municip-municipal <br /> Discussion <br /> Groundwater flow observed at the site and in the central Tracy region is northerly The "Lincoln" Well is <br /> located about 1900-feet downgradient of the site There are no reported occurrence of contaminants in <br /> routine sampling at the Lincoln Well One City well (Wainwright) is located roughly 1100-feet east and <br /> side-gradient of the site The remaining wells are either near the radius perimeter or bevond the <br /> penmeter <br /> These wells are all screened or perforated into deeper aquifers in the area where groundwater yields are <br /> very large for the use The municipal wells are seated through the shallow aquifer zone The historic <br /> high and low groundwater elevations observed at the site are 41 51 and 37 86 respectively These <br /> groundwater levels have remained consistent for this slightly confined aquifer and appear typical for <br /> shallow, thin near surface aquifers The site aquifer (uppermost water bearing zone occurs between <br /> about 11-to 22-feet, and the aquifer is underlain by an extensive aquitard Also, recent excavation work <br /> has removed a "pocket of contamination at the site near MW-1 <br />