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1 <br />' sample and the lids The samples were labeled with the sample point identification, <br /> preservative added, if any, date, time and EAI project number, and immediately placed <br /> into an ice chest chilled using frozen blue and crushed ice The samples were kept chilled <br /> until delivered to the laboratory for analytical testing All samples were logged on a chain <br /> of custody record form (see Appendix B) <br />' 23 SAMPLING EQUIPMENT CLEANING PROTOCOL <br /> The submersible pump and hose system (Equipment), used only to purge the wells <br /> prior to sampling, was decontaminated between each event using the following <br /> proced u re <br />' ■ The Equipment was flushed with tap water, <br /> The Equipment was washed to a solution of Alconox detergent and tap <br /> water, and <br />' ■ The Equipment was flushed with tap water <br />' 24 EFFLUENT HANDLING <br /> All effluent generated during purging, sampling and equipment decontamination <br /> activities was sealed in labeled 55-gallon drums The drums are stored on the <br />' Montgomery Ward site pending proper disposal <br /> n n 3.0 MONITORIIN WELL SURVEY m <br /> Kier and Wright Civil Engineers and Surveyors, Inc , California licensed land <br /> surveyors, were retained by Montgomery Ward and Unocal Corporation to survey well <br /> locations and elevations with respect to mean sea level of the wells associated with both <br /> the Montgomery Ward and the Unocal site These wells were surveyed on June 29, 1993, <br />' in conjunction with the quarterly monitoring activities The elevation of all the wells were <br /> surveyed to the City of Stockton Benchmark No 14 (elevation = 10 95 feet Mean Sea <br /> Level), located on the east side of Pacific Avenue at the approximate center Ione of Yokuta <br />' Road (See Appendix C) <br />' 4.0 ANALWICAL TESTING. A ry <br /> The samples were delivered for analytical testing to Calscience Environmental <br /> Laboratories, Inc , a state certificate hazardous waste testing laboratory (Certificate #257) <br /> The samples were tested for halogenated volatile organic compounds using EPA Method <br /> 601, benzene, toluene, xylenes and ethylbenzene using EPA Method 602, and total <br /> petroleum hydrocarbons as gasoline using modified EPA Method 8015 The results of the <br /> testing are shown on Table 2 The laboratory reports are contained in Appendix D <br /> Project No 1232 2 ENVIRONMENTAL AUDIT, INC <br />