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f <br /> 'V <br /> FIELD PROCEDURES <br /> 'te afet P n <br /> This plan describes the safety requirements for purging ana sampling groundwater <br /> monitoring wells. The site safety plan is applicable to personnel of Applied GeoSystems <br /> who perform work at the site. A copy of the site safety plan is available for reference by <br /> appropriate parties during the work. The onsite Staff Geologist of Applied G£oSystems acts <br /> as the Site Safety Officer. <br /> round-urate• am lin <br /> 0.01 foot <br /> h a <br /> linst <br /> The static water level in each <br /> tined with Ai onto,:and to tdeioni dhe iwatter before ltuse noe each <br /> electric water-level soup surfzce of water in the well <br /> der well. A clean baanalysis ifrom ler w of hydrocarbons.arbons.sed to obtain a Thep <br /> sample was retrieved and visually examined <br /> for a subjective <br /> for floating product, sheen. color, and clarity. <br /> Approximately 3 well volumes of ground water were purged from the wells using a stainless• <br /> steel electrical submersible pump. The pump,cables,and hoses were cleaned with Alconox <br /> and water before use in each well. The wells were purged until withdrawal was of sufficient <br /> temperature,and electrical conducvity of the watr.as <br /> duration to result in <br /> stabilized meters alibrated to a standard buffer and conductive y standardeThe <br /> measured by portable <br /> wells recovered to more than 90 percent of the static wafer level within 5 minutes of turning <br /> off the pump. The ground water purged from the wells was temporarily stored in 17E,steel. <br /> 55-gallon liquid waste drums approved for this use by the Department of Transpcitation. <br /> n bailer <br /> Before collecting each d ; ier sample. itzed water. Hydrochloe geologist cleaned lric ac dowas added1to <br /> Alconox and rinsed tt withith tap waer and deon <br /> the sample vials as a preservative.n Beach oe formation water then was collected from <br /> f the welll switth the Teti bailer and slowly transferred <br /> the surface of the water <br /> to laboratory-cleaned sample containers. <br /> Ae ortin1, Results of Anal ses <br /> the <br /> oratory <br /> n units <br /> Hydrocarbon constituents in gee maximum amponles arc taminantplevel 1 st d inbTitle 22'of the <br /> of parts per billion (ppb) <br /> California Code Regulations 0, ,750 benzene,srespectively. The action level ene and total established by the <br /> enz <br /> drinking water areb To conform with the <br /> California Department of Health Services for toluene is 100 pp <br /> laboratory reports we report groundwater chemical data in units of ppb. <br /> ` APP1 Vd Ge0SYSM&J77s --- <br />