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S E C O R <br /> ATTACHMENT C <br /> FIELD PROCEDURES <br /> Exploratory Drilling <br /> Monitoring well MW-13 was over-drilled using 10-inch hollow-stem auger drilling equipment. No soil <br /> samples were colleted. All down-hole drilling and sampling equipment was steam-cleaned prior to and <br /> following the completion of the soil boring. <br /> Groundwater Monitoring Well Installation and Development <br /> The replacement groundwater monitor well was completed by installing a 2-inch diameter, flush-threaded, <br /> schedule 40 PVC casing with 0.020-inch factory-slotted screens_ Approximately 15 feet of screen was <br /> used to construct the monitor wells. A #3 sand pack was placed in the annular space across the entire <br /> screened interval, extending approximately 2-feet above the top of the screen. A 2-foot bentonite <br /> transition seal was placed atop the sand pack, followed by a neat cement seal, extending from the top of <br /> the bentonite transition seal to the ground surface. The boring logs show well construction details <br /> (Attachment B). <br /> The development procedure for each well consists of swabbing the screen interval and pumping or bailing <br /> approximately ten casing volumes of water from the wells. The well development sheet is included as <br /> Attachment D. <br /> s <br /> Soil Cuttings and Purge Water <br /> Soil cuttings generated during drilling operations were stored onsite in 55-gallon drums onsite pending <br /> characterization. The soil and water will be removed from the site by a licensed disposal contractor(Filter <br /> Recycling Services) and transported to an appropriate disposal or treatment facility for proper disposal. <br /> r <br /> r <br />