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i <br /> Ar <br /> d <br /> A.Vorster/5 October 1990 5 <br /> installation, soil samples will be collected for analysis according to recent Regional Board Staff <br /> Recommendations. Following the installation of the proposed monitor wells,the new monitor wells <br /> and existing wells will be surveyed relative to mean sea level to determine or confirm top of casing <br /> elevations. These elevations will be used to determine groundwater elevations and groundwater flow <br /> direction. After the new monitor wells are developed, they will be sampled for analysis according <br /> to_recent Regional Board Staff Recommendations. The laboratory results will be evaluated in <br /> conjunction with previously collected data, and a technical report will be prepared and submitted <br /> to Chevron Pipe Line Company. <br /> - i <br /> We appreciate your interest in the. proposed investigative work, and would like to request your <br /> timely review of this workplan since we hope to schedule the drilling and installation of the monitor <br /> well for early November 1990. If you have any questions or comments please call us at (415) <br /> 457-7595. <br /> Sincerely, <br /> Western Geologic Resources, Inc. <br /> . I <br /> Kathleen A. Isaacson_ <br /> Senior 9PQ4Vgist <br /> Th mas J. Echol <br /> Senior Geologies ,CL <br /> CRG No. 4564 <br /> 34 <br /> KAI/THE-va <br /> cc: Doug Christia on Pipe Line Com,zany <br /> t <br /> J. T. Wilson, Es sb <br /> 3'a.. afe HeRo ' & May <br /> yj"k y <br /> T. Holson - Chevr 'eil,iCy ny <br /> { <br /> • I <br /> i <br /> I <br /> i <br /> I <br /> 107w1000.va <br /> i <br /> F <br />