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Mid Coast EngineersRlchardA.Wadsworth <br /> Civil Engineer <br /> ark Civil Engineers and Land Surveyors Stanley O.Nielsen <br /> Land Surveyor <br /> 70 Penn Lane,Suite A - Watsonville,CA 95076 Lee D.vaage <br /> phone: (831)724-2580 Land Surveyor <br /> fax: (831)724.8025 <br /> e-mail: lee@midcoastengineers.com Jeff S.Nielsen <br /> Land Surveyor <br /> June 19, 2014 <br /> Daniel Lescure <br /> Conestoga-Rovers&Associates(CRA) <br /> One Concord Center <br /> 2300 Clayton Road, Suite 920 <br /> Concord, CA 94520 <br /> Re: Former Shell Central Valley Crude Oil Pipelines, Cordes Ranch in the vicinity of 24322 <br /> Hansen Road,Tracy, California: CRA Project 060223-2014,MCE Job No. 01171X6 <br /> Dear Mr. Lescure, <br /> As you requested, on June 17 we surveyed one monitoring well and three soil borings at <br /> the referenced site. Our findings are shown on the attached sheets expressed in State Plane <br /> Coordinates and Latitude/Longitude, and are consistent with our previous surveys of August 10 <br /> and September 10, 2010, and August 16 and December 2,2011. <br /> For the well, a notch was cut in the north rim of the PVC casing(toe) and a cross chiseled <br /> in the north rim of the riser box (tob). A measurement was also taken at ground level (g) <br /> adjacent to the riser. For the borings, readings were made at ground level in the approximate <br /> center of the grout. <br /> Measurements were obtained from conventional <br /> ion with <br /> GPS tecin iques (Code COPS), using control points AA3811 (HPGN1gCA 10ues in c13)band tHS4994 <br /> (MEDA) as published by NGS/NOAA and listed on their website. Latitude and Longitude as <br /> shown were determined from the California Coordinate System, Zone 3, Epoch Date 2010.00, <br /> NAD 83 Datum. The accuracy range of the reported information is +/- 1 cm. GPS equipment is <br /> the Leica Mover(LIROV). <br /> The benchmark used for this survey is NGS AA3811, as mentioned above, a disk on the <br /> north side of the California Aqueduct off Patterson Pass Road. Elevation= 250.4 feet, NAVD <br /> 88 datum. <br /> Please let me know if you have questions or need additional information. <br /> Yours truly, <br /> ee D. Vaage x't No. Gena <br /> b <br /> ti <br /> � CAI. <br />