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. W <br /> WHF Environmental Consultants, Inc.. <br /> Sampling Protocol <br /> Page 3 <br /> Groundwater Samplitig <br /> A travel blank provided by the 9aborato.ry accompanied the sample vials from the time <br /> they were picked tip from the lab to the time they were delivered to the lab. This travel <br /> F blank was listed on the Chain of Custody and analyzed only if the pump blank was <br /> poitive. <br /> All sampling equipment including the pump, bailer, and cables, used by sampling <br /> personnel, was disassembled and steam cleaned prior to commencement of sampling. 5 <br /> De-ionized or organic-free water (also provided by the laboratory) was then introduced <br /> j into the pump or bailer as a final stage of cleaning. This water was then gently poured <br /> into sample vials to be used as pump or bailer blanks. This blank was not tested due to { <br /> _the absence of contarninarts in the corresponding samples ony if the water sample <br /> tested positive. <br /> r <br /> Immediately prior to sampling, waterlevelsand well depth measurements were take, in , <br /> all wells at the site. Each well was evacuated using a stainless steel submersible pump, <br /> which does not introduce air into the water.cOlulnn. The pH, ternperature, and <br /> electri-cal conductivity of the water was monitored as the well was evacuated. These pararre- <br /> ters were noted on a field log. instruments calibrated to known standards were used to <br />'— monitor these parameters. At least five (5) well volumes were evacuated from each <br /> well, until the above parameters were stabilized. N ells that were de-watered before <br /> evacuation of five (5) well. volumes was accomplished, were sampled upon 80 percentJ. <br /> recovery of the initial. water level. The wells or other sampling points were sampled in <br /> order of the least to the most contaminated, as best known or-estimated. The samples <br /> m were pumped from a stainless steel bladder pump or carefully poured from a Teflon <br /> bailer into clean glass vials with Teflon-lined screw caps and half gallon plastic <br /> containers provided by the laboratory. Care was taken to ensure that no air .space <br /> existed in the vials by inverting to check for bubbles and re-sampling,-Jf necessary..The <br /> samples were analyzed within 14 days according to their EPA methods. Water samples. . <br /> collected for analysis were analyzed by EPA method 601 and 602 for volatile organics <br /> w and halocarbons, and method TEPH-LUPT for total petroleuria liydrocaibons as diesel. <br />_ r <br /> ,r <br /> a -- <br />