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found to be present at a depth of 30 feet in any of the borings, then those boring will be <br /> completed as groundwater monitoring wells, up to a maximum of six wells. Soil samples from <br /> the borings and groundwater samples from the wells will be analyzed for benzene, toluene, <br /> ethylbenzene and xylene (BTEX) and total petroleum hydrocarbons, gasoline fraction (TPH-G). <br /> Three of the borings and/or well samples will also be analyzed for TPH, diesel fraction <br /> (TPH-D). A report of findings will be prepared and presented to the EHD. <br /> Cost Estimate_fot GASI Scope of Work <br /> Because the investigatory approach recommended by GASI is very open-ended, the scope of <br />+ services and the resulting costs of the initial phase of the investigation could be highly variable. <br /> For example, the minimum level of effort is completion and sampling of six soil boring which <br /> is a rather modest program. However, a maximum scope, using the GASI approach, could <br /> include the installation of six monitoring wells which can be two to three times the cost of the <br /> minimum program. <br /> f To provide you with a responsive quotation, we have provided cost estimates for the GASI scope <br /> of work in terms of unit prices for various tasks. We have then assembled a total cost estimate <br /> from those unit costs into two packages which we believe represent a minimum level of effort <br /> and a likely scope of effort for the investigation. <br /> Unit Costs Estimates <br /> • Install, sample and abandon one bore hole to 40 feet <br /> Without Diesel Analysis $ 2,650 <br /> With Diesel Analysis $ 3,025 <br /> • Convert one borehole to a monitor well to 60 feet, take additional <br /> soil samples and one groundwater sample and analyze for the <br /> required parameters <br /> Without Diesel Analysis $ 4,380 <br /> With Diesel Analysis $ 4,865 <br /> • Prepare one project report covering only soil boring activities $ 6,586 <br /> • Prepare one project report covering soil boring and <br /> groundwater investigation activities $ 6,905 <br /> Com site uotation for Minimum Sco f—W-p <br /> • Install six borings <br /> (3 w/Diesel Analysis @ $3,025) $ 9,075 <br /> (3 wo/Diesel Analysis @ $2,650) $ 7,950 <br /> • Complete one soil investigation project report $ 6.586 <br /> Total Estimate $23,611 <br /> vROPOSA Rco." 2 <br />