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CAMBRIA <br /> Because these constituents have not previously been detected in these wells, Cambria <br /> recommends that they be added on an annual basis. According to this proposed revision, wells <br /> MW-1 through MW-4 would be analyzed quarterly for TPHg, BTEX, and MTBE and annually <br /> for the other fuel oxygenates (TBA, TAME, ethyl tertiary butyl ether, and di-isopropyl ether). If <br /> SJCEHD concurs with this recommendation, we will implement the revised sampling scope <br /> beginning with the fourth quarter 2004 sampling event. <br /> Schedule <br /> Cambria is prepared to begin field work upon approval of the work plan by SJCEHD and receipt <br /> of the appropriate permit. Cambria will notify SJCEHD of the field schedule at least 48 hours <br /> (two working days)prior to commencing field work. <br /> Closing <br /> If you have any questions regarding the scope of work outlined in this work plan, please call <br /> Aubrey Cool at(510)420-3336. <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> Aubrey K. Cool, RG �<vV JOREY K cpo c'N <br /> Project Geologist <br /> RG 7659 • <br /> NO. 7659 <br /> 9�of cA0F°tea <br /> Attachments <br /> Figure 1. Site Vicinity/Receptor Survey Map <br /> Figure 2. Site Plan/Proposed Well Location Map <br /> cc: Ms. Karen Petryna, Shell Oil Products US, 20945 S. Wilmington Ave., Carson, CA 90810 <br /> Mr. James Barton,Regional Water Quality Control Board, 11020 Sun Center Drive, #200, <br /> Rancho Cordova, CA 95670 <br /> 1359 6 <br />