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i <br /> "AMA <br /> RR <br /> 29, 1992 <br /> Former Unocal Station No. 2859, Stockton, California <br /> The boring will take approximately 4 hours to drill, and the well will take approximately 2 <br /> hours to install. Two subcontractor personnel will operate the drill rig, and a geologist from <br /> RESNA will be present at the site during drilling. The well will also be developed to <br /> remove sediment from the well and then sampled by a geologist from RESNA. Each of <br /> these tasks will take approximately 3 hours and will be conducted on separate days. We <br /> anticipate the well will be developed and sampled within 4 days following the drilling. <br /> Every effort will be made to keep the work area clean and to restore the area to the <br /> original condition when the work is completed. We will contact your lessee to coordinate <br /> drilling operations and to discuss which days of the week are most convenient for the lessee. <br /> y <br /> We. tentatively plan to construct this monitoring well in February 1992. Upon receipt of <br /> your consent, we will contact the lessee to schedule a date for our work, and we will inform <br /> you of that date. <br /> Depending on the findings of this phase of the investigation, the well may require periodic <br /> f monitoring or groundwater sampling. A geologist from RESNA may periodically need to <br /> gain access to the monitoring well for data acquisition for approximately 1 year, or as <br /> required by regulatory agencies. After data from the well are no longer needed, the well <br /> will be properly destroyed by drilling it out with an 8-inch-diameter auger and backfilling <br /> the borehole with neat cement. The ground surface will then be restored to resemble the <br /> surrounding ground material. <br /> have included two copies of Unocal's Standard Access Indemnification Agreement and <br /> We p g <br /> a prepaid return envelope. Please signify your authorization for RESNA and our <br /> subcontractors right of access to the referenced property by signing in the designated space <br /> and returning one of the Agreements to us. We appreciate your cooperation in this matter. <br /> We will contact you at least 48 <br /> 0123bbro <br /> 38012-10 2 <br />