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28 August 2006 <br /> AGE-NC-Project No. 98-0497 <br /> Page 2 of 2 <br /> Depth to ground water measurements will'be taken daily from wells MW-1 through'MW-5 to <br /> estimate draw down-effects of the ground water,rem val. -Grab ground, water' samples will be <br /> collected directly from the purged water discharge after three well casing volumes of water have <br /> been removed from well MW=I,then once daily and j ust prior to completion of purging.Two weeks <br /> after completion of the batch removal event,MW-1 will be sampled once again to measure the short <br /> term effects of the batch removal on the dissolved TP -d mass. <br /> = Ground water samples will be properly.labeled,placed n a chilled container and transported under <br /> chain of custody to Cal Tech'Environmental Laboratori c s(C TEL),a State of California Department <br /> of Health Services-certified-analytical.laboratory-to be malyzed for: <br /> • Total petroleum hydrocarbon_s quantified as.dies l(TPH-d)in accordance with EPA Method <br /> 80,15M; and <br /> • Benzene, toluene, ethylbenzene, arid totalxyle es (BTEX) by EPA Method 8260B. <br /> Upon completion of.field work and receipt of final laboratory analyses, a report will be prepared <br /> describing the work performed and will include findings, conclusions and applicable <br /> recommendations. All laboratory reports for sample analyses, testing methods'laboratory quality <br /> assurance/quality control.(QA/QC) reports,;and samp e chain of custody documentation will be <br /> included with the report..After completion of the reportadditional purging/disposal events maybe <br /> scheduled to further-mitigate the dissolved TPH-d.mas s,around-MW-1. <br /> If you have any-questions or,comments, please contact our office at (209) 467-1006. <br /> Sincerely, <br /> Advanced GeoEnvironmental,.Inc. <br /> A ' AA lot <br /> 3 <br /> EyrFe L. Fisher William R. Little <br /> Project Geologist. S nior Project Geologist <br /> C lifornia Professional Geolog. <br /> cc: Mr. Daniel Folcher, Vineland Construction Co <br /> Advanced GeoEnvironmental,Inc. <br />