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WHF Environmental .onsultants, Inc. Sampling Protocol Page: 4 to commencement of sampling. De-ionized water (also provided by the laboratory) will be introduced into the bailer as a final stage of cleaning. This water will then be gently poured into the sample vial to be used as a bailer blank. This blank will be tested if contaminents Ae�Z are found in the well sample. f A travel blank provided by the laboratory willaccompany the.sample vials from the time they are picked up from the lab to the time they are r delivered to the lab. This travel blank will be listed on the Chain of Custody but not analyzed ifresults of the bailer blank are negative. . _ Immediately prior to sampling, water levels and well depth measurements will be taken in the well. The well will be evacuated L. using a stainless steel bladder pump, which does not introduce air into the water column. The pH, temperature, and electrical conductivity of the water will be monitored as the well is.evacuated. These parameters are will be noted on a field log and submitted as a part of the quarterly reports. The instruments used to measure the analytes will be calibrated using known standards for each analyte. . At least 5 well volumes will be evacuated from the well until the above parameters-are stabilized. 'The samples will be transfered from a Teflon bailer into a clean glass vial with a Teflon-lined screw cap. provided by the laboratory. Care will be taken to ensure that no air space exists in the vials by inverting it, to check for bubbles and re- sampling if necessary. The sample will be analyzed within 14 days using EPA methods and holding time protocols.. Water samples collected for analysis will be analyzed using EPA method 602 for ' purgeable aromatics and EPA method 8015 modified for total -.. petroleum hydrocarbons, as referenced in Solid Waste Method SW 846. ! L r