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r C 'Vwkglal Tako ies lKc Page 2 Morita Brothers(Charter) Project Mo.: 724.2 December 17,2002 Prop2g2d Direction of Pro!ect The work approved by the County is summarized below: 1. Only one shallow monitoring well (MW-11) will be installed instead of the four proposed. 2. Intermediate wells MW-110 and MW-111 will be installed as proposed; wells MW-108 and MW-109 will be moved west of their proposed locations (approximately half the distance to wells MW-5 and MW-6) as overhead utilities and trees allow. 3. A deep well MW-202 will be installed near MW-2. The new well will be developed and sampled on the day of installation with a 24-hour laboratory turn around time. If the well is non-detect, then two additional deep wells (MW-205 & MW206) will be installed near wells MW-5 & MW-6. If MW-2 is impacted, then three additional deep wells (MW-208, MW-209 & MW-210) will be installed near wells MW-108, MW-109 &MW-110. 4. The deep wells will be screened in the 70-80 feet below grade surface interval. 5. Develop the new monitoring wells. 6. Place the new and existing wells on a quarterly monitoring schedule for a period of one year. 7. Prepare a site characterization report after well installation. 8. Prepare four groundwater monitoring reports. Listed below is a proposed schedule for implementing this project. Proposed Bidding of Project To remain in compliance with the USTCFP, Geological Technics Inc. requested a bid from V&W Drilling to drill and install up to nine groundwater monitoring wells (one shallow, four intermediate and four deep). GTI has found V&W to be very cost effective for three primary reasons: • reasonable charge rate • fast drilling equipment • well trained crew These costs have been included in the attached opinion of cost spreadsheet prepared giving estimated costs for performing the work approved by SJC PHS/EHD. The opinion of cost spreadsheet shows itemized cost for the tasks proposed. In an attempt to make this Pre- Approval flow smoothly, GTI has used the same unit costs for this work that has previously been approved by the USTCFP for other projects. Geological Technics Inc. accepts field support services and lab invoices and adds a 15% overhead fee. GTI then pays these charges. Tentative Schedule for Implementing Work Task Description Schedule • Prepare USTCFP Cost Pre-Approval for work December 2002 • Receive approval of costs from USTCFP January 2003 • Drill, install &develop the 9 MWs February 2003 • Perform a groundwater monitoring event including new wells March 2003 • Prepare a Site Characterization Report&Quarterly Monitoring Report April 2003