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.1 1,111,11111111111 <br /> March 9, 19as AGS 038009-1 <br /> Fire Engine Company No. 21 Stockton, California <br /> S=� <br /> wrench to open. The possibility of either well vandalism or <br /> �., accidental disturbance is reduced. <br /> MONITORING WELL SAMPLING <br /> The wells will be developed prior to water sampling by swabbing, <br /> air jetting, surge pumping, or other suitable method. Following <br /> ground-water recovery to static conditions and an initial water <br /> level measurement, the wells will be sampled using a Teflon <br /> bailer cleaned with Alconox and deionized water. The bailer will <br /> be used first to obtain a sample from the surface of the water in <br /> the well prior to purging. Any subjective evidence of product <br /> detected in the wells will be recorded. <br /> If no floating product is observed in the wells, a formation <br /> water sample will be collected after purging operations. <br /> Approximately three to four well volumes of water will be purged <br /> from the wells prior to sampling using a submersible pump. If <br /> floating product is encountered in a well, the well will not be <br /> purged or sampled. <br /> The water samples will be sealed in laboratory-cleaned glass <br /> vials with Teflon-lined lids, labeled, and immediately placed in <br /> Aw iced storage. Chain of Custody Records will be initiated by the <br /> 13 <br /> .4pp/�ed Geo�ystrms <br />