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Project 1 - Domestic Water Well <br /> JJW Geosciences will deactivate the well and remove the test nipple from the well head to allow <br /> downhole access. A small diameter bailer will be used to collect a sample from the upper surface <br /> of the water table. No purging is proposed. <br /> Our cost estimate assumes that there will be adequate clearance between the downhole pump <br /> and the well casing to allow for collection of the water sample. Should the pump and associated <br /> piping need to be removed for sample collection, additional costs beyond those specified in the <br /> accompanying Cost Estimate Worksheet will be incurred. Oftentimes, due to the weight of the <br /> pump and associated piping, a hydraulically-equipped pump truck is necessary to remove the <br /> pump and piping. <br /> The single domestic well sample will be shipped to a State of California certified analytical <br /> laboratory for analysis for total coliform and petroleum hydrocarbons via EPA methods 524.2 and <br /> 8260. <br /> Included in this Project task will be a review of Department of Water Resources well logs to <br /> determine casing size, depth, and screened intervals of the on-site domestic well. Costs for <br /> downhole videotaping of the casing, if needed, are not included in our bid. We can provide a cost <br /> estimate for downhole videotaping should the well log data prove insufficient. <br /> Project 2 --Contaminated Soil Disposal and Site Backfilling and Repaving <br /> Approximately 150 cubic yards of contaminated soil will be re-excavated from the excavation and <br /> disposed at Forward, Inc. landfill in Stockton. Should additional overexcavation be necessary, the <br /> costs will be billed on a time and materials basis in accordance with the enclosed 1998 Fee <br /> Schedule. <br /> Following removal of the contaminated soil, clean import soil will be brought in to backfill the <br /> excavation. The import soil will be compacted during backfilling. The backfilled excavation will <br /> be repaved with asphalt. Included in our cost estimate is saw-cutting of the existing paverrrent <br /> edges to allow for uniform matching of the new asphalt with the existing asphalt. <br /> Project 3 -Soil and Groundwater Investigation <br /> Two exploratory soil borings are proposed to be advanced in the locations specified in the RFB. <br /> The borings are proposed to be advanced to depths of approximately 80 feet each. Both borings <br /> will be continuously cored and logged for lithology. Soil samples will be collected for laboratory <br /> analysis at five foot vertical intervals and at changes in lithology. <br /> A groundwater grab sample is proposed to be collected from each boring. A HydroPunch tip and <br /> screen will be used to collect the groundwater samples. Following sample collection, the <br /> boreholes will be backfilled with a cement grout delivered via tremie pipe. <br /> r;, <br />