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3 <br /> Illi <br /> 0 <br /> plug to isolate the perforated interval from cementing <br /> k operations . The upper portion of theft well will be cemented <br /> from the bentonite plug to the surface with cement grout, <br /> using direct displacement and/or a tremie pipe if - needed . <br /> The monitoring wells will be completed using a protective <br /> box at the surface, cemented in place,; with a removable 4 <br /> cover. The pipe top will 'be capped with ' a locking cap for <br /> protection. <br /> l i', I <br /> During boring operations , all cutting �wili be described by a Ir <br /> registered geologist . Samples will be} taken every 51 , comm- <br /> encing at 51 below ground level . Thi s w iT1 ensure that the <br /> entire vadose zone, which has contained water at any time in <br /> recent years, will be sampled and tasted. Samples will be <br /> collected using a 2'' split spoon sampler with 2" X 4" (or <br /> similar) brass collection tubes. Duplicate samples w; ll be <br /> provided for EHD/RWQCB if desired. Th'e soil samples will be <br /> examined and described. The collectedisamples will be capped <br /> with foil , sealed with plastic end Caps and duct tape , lab- <br /> eled and placed in an ice chest for transportation to a cer- <br /> tified laboratory. Chain-of-custody forms) will be used for <br /> transferal of samples and their temperature will be measured <br /> when received at the lab. All sampling equipment will either <br /> be obtained: as a package from a certifie&. lab or brought to <br /> the site by labcratory personnel . A copy ` of the laboratory <br /> QA/QC manual will be supplied with the} sample results . <br /> All borehole equipment will be cleaned between wells and at 1 <br /> other appropriate times with a three step wash and rinse <br /> process using either ,TSP or a similarlI ndustrial cleaner. <br /> At a convenient time after the wells at-e installed, standing 5 <br /> water levels will be recorded using an electric probe type <br /> water and product level recorder, both in the monitoring t <br /> wells and the current water well . The wellheads elevations, <br /> at least with respect to each other,1� will be surveyed in <br /> order to establish accurate well head °'elevations . <br /> The wells will be developed by bailing at least '5 casing <br /> volumes of the standing water column,11 using an appropriate <br /> size PVC bailer with a either a Teflon or, similar ball and <br /> seat. When the water level has returned to about 3/4 of its <br /> standing level , bailer samples will jibe taken. The bailer <br /> will be cleansed as noted above between uses in each well . <br /> All samples' will be collected in stleril'e jars and vials <br /> supplied by the testing lab. Chain-of-Custody forms , ice <br /> chests etc . as noted above wild be used . The laboratory will <br /> be instructed to supply both sampled'blanks and duplicate <br /> containers for spike samples if needed: The methods used for <br /> spike calibration and equipment calibration will be <br /> described in the laboratory manual . <br /> All samples , both soil and water, will be tested for BTEX <br /> and TPH-G. The laboratory will be instructed t:) use . the <br /> T <br /> 1 4 <br />