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IRichard A Wadsworth <br /> Mid Coast Engineers Civil Engineer <br /> StaN O Neelsen <br /> Civil Engineers and Land Surveyors Land <br /> Surveyor + <br /> I �_]l� 70 Penny Lane, Suite A - Watsonville, CA 85076 Les D Vaage <br /> phone (831)724-2580 Land Surveyor <br /> I fax (831)724-8025 Jeff S Nielsen <br /> e-mail lee@midcoastengineers com Land Surveyor <br /> March 11, 2003 ! <br /> F <br /> I <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 Stations, 2320 North El Dorado, Stockton, California; KHM <br /> Project C81-2320 El Dorado, MCE Job No 03041 <br /> Dear Ms Arnold, <br /> I As ou requested, on March 7 we surveyed four momtoz7ng wells located at the <br /> Y <br /> referenced site Our findings are listed on the attached sheets, expressed in State Plane <br /> ICoordinates and Latitude/Longitude <br /> A notch was cut in the north nm of the PVC casing (TOC) and a cross chiseled in the <br /> Inorth nm of the box (TOB) <br /> Measurements were obtained from conventional survey techniques in combination with <br /> IGPS techniques (Code CGPS), using control points HS4489 (Q 1413) and HS4763 <br /> (STOCKTON SOUTHWEST BASE) as published by NGS/NOAA and listed on their web site <br /> Latitude and Longitude as shown were determined from the California Coordinate System, Zone <br /> 3, NAD 83 Datum The accuracy range of the reported information is +/- 5mm GPS equipment <br /> is the Trimble 5700 system(Code T57) <br /> IThe benchmark used for this survey is City of Stockton BM#25, a brass disk marking <br /> COS monument stamped "2S-1" in monument box in the crosswalk on the east side of Pacific <br /> Avenue at the approximate centerline of Wynandotte Street Elevation = 9 52 feet, NGVD 29, <br /> (COS 1996 ADJ) <br /> IPlease let me know if you have questions or need additional information <br /> Yours truly, <br /> No $029 <br /> I Lee D Vaage , <br /> I <br />