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21 Technology Drive <br />Irvine, CA 92618 <br />949.727.9336 PHONE <br />949.727.7399 Fax <br />www.TRCsolutions.com <br />December 21, 2007 <br />City of Santa Ana <br />P.O. Box 1988 <br />Santa Ana, California 92702 <br />ATTN: MINDY LY <br />SITE: SANTA ANA FIRE STATION NO. 6 <br />950 WEST MACARTHUR BOULEVARD <br />SANTA ANA, CALIFORNIA <br />RE: COST PROPOSAL TO PERFORM QUARTERLY GROUNDWATER <br />MONITORING AND WELL SAMPLING, FIRST QUARTER 2008 <br />THROUGH FOURTH QUARTER 2008 <br />Dear Ms. Ly: <br />TRC submits this cost proposal to perform quarterly groundwater sampling activities at the <br />above referenced site. <br />PROPOSED ACTIVITIES <br />• Conduct four (quarterly) gauging and sampling events of ten Groundwater <br />Monitoring Wells, MW -1 through MW -1o. <br />• Analyze groundwater samples from Monitoring Wells MW -1 through MW -10 for <br />total petroleum hydrocarbons as gasoline (TPH -G) and total petroleum <br />hydrocarbons as diesel (TPH -D) using EPA Method 8015M, and for full scan <br />volatile organic compounds (VOCs), including oxygenates, using EPA Method <br />826oB. Analysis for TPH -D was added to the sampling criteria per CRWQCB. <br />• Disposal of non - hazardous purged groundwater. <br />• Prepare four quarterly groundwater monitoring reports summarizing the results of <br />fluid level gauging and groundwater sampling activities. Reports will include <br />tabulated data, figures and findings from quarterly sampling events. <br />