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Richard A Wadsworth <br /> Mid Coast Engineers Civil Engineer <br /> r. Civil Engineers and Land Surveyors Stanley O NielsenLand Surveyor <br /> 70 Penny Lane, Suite A - Watsonville, CA 95076 Lee D Vaage <br /> phone (831)724-2580 Land Surveyor <br /> fax (831) 724-8025 Jeff Nelsen <br /> e-mail lee@midcoastengineers com Land Surveyor <br /> March 12, 2003 <br />' Debbie Arnold <br /> KHM Environmental Management, Inc <br /> 6284 San Ignacio Avenue, Suite E <br />' San Jose, CA 95119 <br /> Re Shell-branded Service Station, 2375 West Grant Line Road, Tracy, California; KHM <br />' Project C81-2375 Grant, MCE Job No 03042 <br /> Dear Ms Arnold, <br />' As you requested, on March 7 we surveyed four monitoring wells located at the <br /> referenced site Our findings are listed on the attached sheets, expressed in State Plane <br />' Coordinates and Latitude/Longitude <br /> . A notch was cut in the north rim of the PVC casing (TOC) and a cross chiseled in the <br />' north rim of the box (TOB) <br /> Measurements were obtained from conventional survey techniques in combination with <br />' GPS techniques (Code CGPS), using control points HSO455 (F 192 RESET 1939) and AE9889 <br /> (FINCK) as published by NGS/NOAA and listed on their web site Latitude and Longitude as <br /> shown were determined from the California Coordinate System, Zone 3, NAD 83 Datum The <br /> Iaccuracy range of the reported information is +/- 5mm GPS equipment is the Trimble 5700 <br /> system (Code T57) <br />' The benchmark used for this survey is HSO455, a bench mark disk stamped "F 192 1935 <br /> RESET 1939" in a 24 inch concrete pipe culvert 2 3 miles northwest along the Southern Pacific <br /> Company railroad from the station at Tracy Elevation= 35 01 feet,NGVD 29 <br /> Please let me know if you have questions or need additional information <br /> Yours truly, <br /> Lee D Vaage ft 5029 <br />