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r <br /> r <br /> MES H. WELCH <br /> June 29, 1988 <br /> Project No. 88-06-20 1941 Mitchell Read, Suite J, C t2O9}3-4489 <br /> t Mr. Ray Kablanow <br /> Geological Technics <br /> 2601 River Road <br /> Modesto, CA 95351 <br /> is Dear Mr. Kablanow: <br /> Yesterday our field Survey Crew visited the Tracy Beacon Station <br /> at the northwest corner of Bessie and Eleventh Streets and <br /> i � <br /> i measured elevations on three existing monitoring wells, as re- <br /> ` quested. The City of Tracy Public Works supplied us with a local <br /> benchmark located at the southeast corner of Bessie St. and <br /> - highland Ave. , said point being the top of a fire hydrant with <br /> an elevation of 47.49 feet above mean sea level, with City datum <br /> being the' same as E7SGS datum. The elevations we measured are as <br /> follows: <br /> Monitoring <br /> Well No. 1-50.11 , north rim of surface box <br /> _. 99.71 , top of 2" pipe casing <br /> (typical, at lock side) <br /> Monitoring Well No. 2=48.60, north rim of surface box <br /> 48.40, top of 2" pipe casing <br /> Monitoring Well No. 3-49.01 , north rim of surface box <br /> 48.74, top of 2" pipe casing <br /> We trust this information satisfies your needs. If any further <br /> information is needed regarding the project, please contact us. <br /> Cor dXally,./� DS <br /> UR�Fp <br /> James H. Welch, L.5. , C.R. <br /> - JHW:tt No.4841 <br /> encl O9-3a <br /> OF CA! <br /> yy <br /> p; LAND SURVEYORICIVIL ENGINEER <br /> LAND DEVELOPMENT ! SUBDIVISIONS I PROPERTY SURVEYS ! CONSTRUCTION <br />