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a <br /> II. SCOPE OF WORK <br /> INTRODUCTION <br /> The work effort described below responds to the County's Request for <br /> Proposal dated October 15, 1986. <br /> TASK 1 - Installation of Ground-Water Monitoring Wells <br /> Four ground-water monitoring wells will be installed at the site in <br /> accordance with the "Ground Water Monitoring Program" prepared by <br /> J. H. Kleinfelder & Associates, dated July 7, 1986. The final well <br /> locations will be selected in the field with the assistance of the site <br /> operator to choose locations that will be protected and will not inter- <br /> fere with operations. The locations will be surveyed prior to drilling <br /> and reference stakes will be installed to facilitate accurate measure- <br /> ment of water levels. <br /> The wells will be drilled using an air-rotary drilling rig. Samples <br /> will be collected at 10-foot depth intervals to log the materials <br /> encountered, and the intervening materials will be logged from cut- <br /> tings. A geologist will log the encountered materials according to the <br /> Unified Soil Classification System. Logs on pertinent forms will be <br /> prepared for submittal to the Department of Water Resources. The work <br /> will be performed under the direct supervision of a registered geologist <br /> pursuant to the requirements of Subchapter 15. <br /> Drilling will be interrupted at 50-foot depth intervals for about <br /> 30 minutes to check for water. Drilling will be resumed if no water is <br /> detected in the well . <br /> When water is encountered, the sampling frequency will be increased to <br /> 5-foot intervals to better identify aquifer materials. If no imperme- <br /> able zone is encountered 40 feet below the water table, the well will be <br /> installed to that depth. If a confined or semi-confined condition is <br /> PRA 8607-37A 3 <br /> Emcon Associates <br />