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Mr Edward C Ralston November 10, 1993 <br /> Page Number 2 <br /> well will be completed to a depth between 20 and 25 feet below the ground surface <br /> Each well will be completed with 15 feet of 0 02 inch slotted casing <br /> The well screen will be surrounded by a sand filter pack that will extend one foot <br /> above the screen interval One foot of bentonite will be placed above the sand The <br /> remainder of the annular space around the well casing will be filled to the surface with <br /> neat cement The wellhead will be enclosed in a locking, flush-mounted, traffic-rated <br /> well box Soils generated from the drilling activity will be stockpiled onsite on <br /> visqueen pending laboratory analysis for disposal <br /> The well will be developed using a bailer, surge block, or pump at least 72 hours after <br /> the time of installation Development water will be temporarily stored onsite a 55- <br /> gallon DOT-approved drum for subsequent analysis and disposal In addition, <br /> Mittelhauser will survey the elevation of the top of the well relative to the three other <br /> wells at the site which have already been surveyed to a common datum Following <br /> the well installation, development, and surveying, groundwater samples will be <br /> obtained from the well for laboratory analysis during the regular quarterly monitoring <br /> program at the site <br />*d The field work will begin as soon as Mittelhauser obtains a permit for the well from <br /> the San Joaquin County Public Health Services, and schedules a driller with a C-57 <br /> license for the drilling and well installation It is anticipated that the well installation <br /> will be completed in 1 day A brief well installation report, which will contain a boring <br /> log and well construction diagram, will be submitted approximately 2 weeks after <br /> completion of the field work <br /> If you have any questions or comments regarding the proposed work, please give us <br /> a call at (510) 416-2902 <br /> Sincerely, <br /> MITTELHAUSER CORPORATION <br /> Steven W Pierce Da id J Blunt <br /> Senior Hydrogeologist Geoscience Manager, RG #4516 <br /> SWP DJBI <br /> P216BLO27 WP <br /> Attachment Figure 1 , Site Location Map <br /> Figure 2, Site Plan <br /> cc Mr Harlin Knoll, San Joaquin County Public Health Services <br />