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i <br /> Page 3 <br /> Cwtogiral Technics Inc.. <br /> Sinclair Trucking <br /> Project No.: 1030.2 <br /> August 8,2003 <br /> 2. GeoProbe Investigation Part One <br /> • Drill and install up to ten (10) GeoProbe boreholes to —20 total depth <br /> 4 . Collect soil samples at 5-foot intervals <br /> • Close borings with a cement grout <br /> 3. GeoProbe Investigation Part Two <br /> • Drill and install two (2) GeoProbe boreholes to a depth of 15-feet b gs and collect <br /> discrete groundwater sample <br /> • Drill and install two (2) GeoProbe_boreholes to a depth of 10-feet bgs (next to boreholes <br /> f described above) and collect discrete groundwater sample <br /> } Collect soil samples continuously in the 15-foot boreholes <br /> • . Close borings with a cement grout <br /> 4. Perform groundwater monitoring. <br /> • Purge and sample the six (6) monitoring wells and one (1) domestic well on a quarterly <br /> { basis for one year. <br /> 1 Submit the quarterly groundwater samples to Sherwood labs for: <br /> ❑ BTEX, TPH-G (EPA 8021B) <br /> Li MTBE (EPA 8021B)—Positive result confirmed by-EPA method 8260 <br /> Proposed Bidding of Project <br /> 1. To remain in compliance with the USTCFP, Geological Technics Inc. requested V&W <br /> Drilling to prepare estimates for drilling and installing the groundwater monitoring wells. <br /> We have found V&W to be very cost effective for three primary reasons: <br /> • reasonable charge rate <br /> • fast drilling equipment <br /> • ' well trained crew <br /> 2. We have found that Sherwood Labs,-'Hilmar, CA to be both cost effective and currently in <br /> compliance with AB2886 mandated electronically deliverable format requirements.. <br /> 3. Thompson-Hysell Engineers has established control points for this site when they surveyed <br /> the existing monitoring wells, which reduces costs for additional site visits. We have found <br /> : Thompson-Hysell to be cost effective and in compliance with the requirements outlined in <br /> AB2886. <br /> :. These costs have been included in our budget-spreadsheet prepared giving estimated costs for <br /> performing the work approved by SJC-EHD. The budget spreadsheet shows itemized costs for <br /> the tasks proposed in the attached action plan. : In an attempt to make this Pre-Approval flow <br /> smoothly, we have used the same unit costs for this work that have previously been approved <br /> 1 <br /> by the USTCFP for other projects. <br /> Geological Technics Inc. accepts field .support services and lab invoices and adds a 15% <br /> overhead fee. <br /> E <br /> f. <br /> i <br />