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Goolo�icaf?echnics Inc. <br /> Mot Page 2 <br /> Project No.: 724.2 <br /> June 29, 1999 <br /> Proposed Direction of Project <br /> The work approved by the County is summarized below: <br /> 1. Drill and install two water table monitoring wells to a depth of 45 feet bgs. <br /> 2. Analyze four soil samples from each borehole for the following: <br /> j • Benzene,toluene, ethylbenzene and xylene(BTEX) by EPA method 8020/602. <br /> • Gasoline range petroleum hydrocarbons (TPH-Gas) by't EPA method 5030/8015(m). <br /> • Methyl Tertiary Butyl Ether(MTBE) by.EPA method 8020. <br /> s • In addition, two soil samples will be analyzed for the following oxygenated fuel <br /> compounds (MTBE, DIPE, ETBE, TAME& TBA) by;EPA method 8260. <br /> 3. Develop the two new monitoring wells. <br /> 4. Place the two new wells on a quarterly monitoring schedule with the other three monitoring <br /> wells for a period of one year. Include two monitoring e' ents for testing water samples for ` <br /> the oxygenated fuel compounds by 8260 and dissolved oxygen and oxidation-reduction <br /> . . _potential. . - <br /> 5. Prepare a site.characterization report after well installation and initial monitoring. <br /> 6. Prepare three groundwater monitoring reports. Q <br /> Listed below is a proposed schedule for implementing this project. <br /> Proposed Bidding of Project <br /> To remain in compliance with the USTCFP, Geological Technics Inc. requested a bid from <br /> V&W Drilling to drill and install three groundwater monitoring wells, one deep soil boring and <br /> five shallow soil borings. GTI has found V&W to be very cost effective for three primary <br /> reasons: <br /> + reasonable charge rate <br /> • fast drilling equipment <br /> • well trained crew <br /> These costs have been included in the attached opinion of kcost spreadsheet prepared giving <br /> estimated costs for performing the work approved by SJC kPHS/EHD. The opinion of cost <br /> spreadsheet shows itemized cost for the tasks proposed. In an';attempt to make this Pre-Approval <br /> flow smoothly, GTI has used the same unit costs for this workljthat has previously been approved <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. GTI then pays these charges. <br /> r i� <br /> Tentative Schedule for Implementing Work <br /> Task Descri tp ion Schedule <br /> • Prepare USTCFP Cost Pre-Approval for work June 29, 1999 <br /> • Receive approval of costs from USTCFP July l5, 1999- <br /> Drill, install & develop the 2 MWs Mid August 1999 <br /> • Perform a GW monitoring event Early Sept 1999 <br /> • Prepare a Site Characterization Report Late Sept 1999 <br />