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-� WHF Environmental ronsultants, Inc. "'W Sampling Protocols Page: .3 The laboratory samples will not have bead space and will be immediately sealed in their liners using aluminum foil lined plastic caps that are taped in place. The re- maining sample will be removed from its liner to be used as ars aide to the on-site geologist in logging the material at that depth. Soil samples collected for analysis will be analyzed using EPA iriethod _ TEPH/LUFT for total extractable petroleum hydrocarbons, EPA method 8020 for. BTX&E compounds and EPA method 5030/LUFT tier total petroleuin hydrocarbons-gasoline. Analyses are to be conducted by GeoMonitor. lite., which is a state certified laboratory in Hesperia, California. Ground Water Srunpding _ A laboratory provided travel blank will accompany the sample vials from the time they are picked up from the lab to the time they are deliverers to the lab. This travel blank should be listed on the Chain of Custody but will be analyzed only if all simples contain the same contaminants. All sampling equipment including the pump, bailer, and cables, used by sampling �- personnel, will be disassembled if appropriate and steant-cleaned prier to commencement of sampling. These procedures will also be followed between each well., sampling point, and at the end of the sampling play. De-ionizers 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 be used as pump or bailer blanks. These blanks will be tested only if their corresponding samples are found to contain contaminants. Immediately prior to sampling, water levels and well depth measurements will be taken in all wells at the site. Each well will be evacuated using a stainless steel bladder pump, which does not introduce air into the water column, or a polyethylene disposable bailer. The pH, temperature, and electrical conductivity oll the water will be monitored as the well is evacuated. These parameters will be noted on a field log. Instruments calibrated to known standards will be used to monitor these parameters. At least five (.5) well volumes will be evacuated from each well and more, if necessary, until the above parameters have stabilized. Wells that are de-watered before evacuation of five (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 least to the most