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y WIfI'T nvironmental ConSUlta."M Inc. Sampling Protocol page: 2 The cl.ttings from the drilling operation will be containerized on-site during drilling for proper disposition. The proper method of disposal will b: dependent upon results of laboratory analysis. this disposal will be the responsibility of the client unless other arrangements have been made. Well Corwrucliun All materials used in well constriction will be thoroughly cleaned prior to introduction into the boring. A bentonite or cement and bentonite grout will be placed at the bottom of the boring as necessary, After the seal has been allowed to set loll-enough to :support the weight of the casing, a 4- inch diameter Well casing (stainless steel or PVC) with end cap and factory perforations for placement in the saturated zone (taking into account seasonal variation) will be placed in the boring. The screen and filter pack sizes will be as noted in the well construction drawing. The casing and end caps will be threaded or joined by stainless steel screws, no PVC cement will be used. The filter pact:will extend two feet above the perforated zone. A bentonite seal 2- to 3-feet thick will be placed in the annular space above the filter pack followed 'uy a cement grout to the surface. Seal and filter pack elevations may change based on the underlying geology (Figure S). Well Development and Sampling The well will be developed until the .v:al water apl,ei.rs clear of sediment, or until an appropriate number of well volumes (based ii:r, the judgement of the responsible professional) have been evacuated. The water produced during well development will be containerized and left on-site in 55-gallon drums or other suitable containers for disposal as hazardous waste if deemed necessary upon receipt of laboratory results. Disposal will be the responsibility of the client unless other arrangements have been made. The wells will be allowed to stabilize for lwenly-four (24) hours prior to sampling. All soil and ground water samples wilt be properly labeled with date collected, project number, sample coordinator, and sample identification. Field records will document the above information and other significant data, such as names of on-site personnel, sampling methods, date and time of sampling, the number of-well_volutiles removed_before_sampling, preservatives added (if any), and any filtration performed on samples.