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YP KIF Environmental Consultants, Mc. Sampling,Protocol w Page: 4 'y arf lab. This travel blank should be listed on the Chain of Custody but will be analyzed only if all samples contain the same contaminants. All sampling equipment including the pump, bailer, and cables, used by sampling personnel, will be disassembled, if appropriate, and steam-cleaned prior to commencement of sampling. These procedures will also be followed between each well, sampling point, and at the end of the sampling clay. De- ionized or organic-free water (also provided by the laboratory) will then be introduced into the pump or bailer as a final stage of cleaning. This water will then be pumped or gently poured into sample vials to he used as pump or bailer blanks. These blanks will be tested only if their corresponding samples are found to contain containinants. Immediately prior to sampling, water levels an,] well depth measurements will be taken in all wells at the site. Each well will be evacuated using a stainless steel bladderpump, which does not introduce air into the water column, or a Teflon bailer. The pH, temperature, and electrical conductivity of the water will be monitored as the well is evacuated. These parameters will he noted ort a field log. Instruments calibrated to known standards will be used to monitor these parameters. At least 5 well volumes will he evacuated from each well, and more, if necessary, until the above parameters have stabilized, `yells that are de-watered before evacuation of 5 well volumes has been accomplished will be sampled upon 80 percent recovery of the initial water level. The wells or other sampling points will be sampled in order of the]cast to the most contaminated, as best known or estimated. The samples will be pumped from a stainless steel bladder I}ump 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 will be taken to ensure that no air space exists in the vials by inverting to check for bubbles and re-sampling if necessary. The samples will be analyzed or extracted within 14 days according to their EPA methods. )Vater samples collected for analysis will be analyzed by LPA tuethod 642 for pus,cable aromatics and halocarbons, and total petroleum hydrocarbons, as referenced in Solid Waste Method SW 846.