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SECOR wwwsecor com <br /> INTERNATIONAL 3017 Kilgore Road,Suite 100 <br /> S E C C) R INCORPORATED Rancho Cordova,CA 95670 <br /> 916-861-0400 rel <br /> 916-861-0430 Fm <br /> • <br /> May 1, 2006 <br /> Mr. Mark Clardy <br /> California Regional Water Quality Control Board — Central Valley Region <br /> 11020 Sun Center Drive, #200 <br /> Rancho Cordova, California 95670 <br /> RE: First Quarter 2006 Groundwater Monitoring and Remedial Summary Report <br /> Stockton Terminals Technical Committee Facilities <br /> Port of Stockton <br /> Stockton, California <br /> SECOR Project No.: 770T.43673.012.0002 <br /> Dear Mr. Clardy: <br /> On behalf of the Stockton Terminals Technical Committee (STTC), SECOR International <br /> Incorporated (SECOR) submits this report for the first quarter 2006 monitoring event at the <br /> site reference above. The work was completed in accordance with the California Regional <br /> Water Quality Control Board - Central Valley Region's (CRWQCB-CVR) Monitoring and <br /> Reporting Program (MRP) No. R5-2004-0823, which is summarized in Table 1 and included <br /> in Appendix A. This report presents a brief site background, groundwater elevation and <br /> • analytical results, a discussion of groundwater analytical trends, and the status of <br /> remediation for first quarter 2006. <br /> As required by MRP No. R5-2004-0823, this report includes the following: <br /> • An aerial view site plan and groundwater contour maps for the A, B, C, and D <br /> zones; <br /> • Isoconcentration maps for total petroleum hydrocarbons as gasoline, total petroleum <br /> hydrocarbons as diesel, benzene, and methyl tertiary butyl ether for the A, B, C, and <br /> D groundwater zones; <br /> • Table showing well construction details; <br /> • Tables showing historical groundwater flow directions and horizontal and vertical <br /> gradients; <br /> • Cumulative data tables summarizing the water quality analytical results and depth to <br /> groundwater measurements, and <br /> • Copies of the laboratory analytical reports. <br /> • <br /> I:\STTC-Stockton\Reports\QMRS\STTC 2006\1 Q2006 STTC Cover Letter.doc SECOR Intemational Incorporated <br />