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e Union Ice Co. Sampling I'i010col Page 3 Ground Water SaMIA119 A travel blank provided by the laboratory accompanied the sample vials from the time: they were picked up from the lah to the tir,,e ilcey were delivered to the lab. 'Chic, travel blank was listed on the Chain of Custody and analyzed. All sampling equipment including the pump, bailer, and cables, used by sampling personnel, was disassembled and steam cleaned prior to commencement of sampling. De-ionized or organic-free water (also provided by the laboratory) was then introduced into the pump or bailer as a Final stage of cleaning. This water was then gently poured into sample vials to be used as pump or bailer blanks. This blank was not tested due to the absence of contaminants in the corresponding samples. Immediately prior to sampling, water levels and well depth measurements were taken in all wells at the site. Each well was evacuated using a stainless steel submersibtc pump, which does not introduce air into the watcr column. The pH, temperature, olid electri- cal conductivity of the water was monitored as the well was evacuated. These parame- ters were noted on a field log. Instruments calibrated to known standards were used to monitor these parameters. At least five (5) well volumes were evacuated from each well, until the above parameters were stabilized. Wells that werc de-watered before ` evacuation of Five (5) well volumes was accomplished, were sampled upon 80 percent recovery of the initial water level. 'file wells or other sampling points were sampled in order of the least to the most contaminated, as best known or estimated. The samples were pumped from a stainless steel bladder pump or carefully poured from a Teflon bailer into clean glass vials with Teflon-lined screw caps and half gallon plastic containers provided by the laboratory. Care was taken to ensure that no air space existed in the vials by inverting to check for bubbles and re-sampling, if necessary. The samples were analyzed within 14 days according to their EPA methods. Water samples k� collected for analysis were analyzed by EPA method 602 for purgeable aromatics and halocarbons, and method 5030/modified 8015 for total petroleum hydrocarbons as gasoline.