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-2- %%./ <br /> 3. Four to six additional samples will be taken to characterize <br /> the rest of the site. The borings for these samples will be <br /> drilled in a grid pattern to be determined in the field. Depths <br /> of these samples will also be determined in the field. The <br /> samples will either be taken in the capillary fringe or be <br /> collected between three and five feet below grade. <br /> Final locations and depths for all samples may be modified in the <br /> field dependent on topography, subsurface structures or geology. <br /> - Drilling will be completed by hollow stem augers and soil <br /> samples will be collected using a split-spoon sampler . The <br /> sampler will be scrubbed between borings with a trisodium <br /> phosphate (TSP) solution or other suitable detergent and rinsed <br /> in clean tap water . <br /> - Soils will be logged by a California registered geologist or <br /> geotechnical engineer. These samples will be analyzed for diesel. <br /> Soil samples will be sealed, placed on ice and shipped to a <br /> certified analytical laboratory for analysis. Samples will be <br /> accompanied by chain of custody documentation. <br /> A written report will be prepared summarizing the work performed <br /> and the laboratory findings. <br /> It shall be the client ' s responsibility to locate all underground <br /> pipes, cables and other underground structures prior to drilling. <br /> Prior to the commencement of any field work a permit must be <br /> obtained from San Joaquin County. The estimate below does not <br /> include charges by the County for permit review. The county <br /> charges $35/hour for the review process ; they estimate <br /> approximately 5 hours (including a field visit) and may take up <br /> to three weeks. To expedite this process we may request priority <br /> review at $52. 50/hour which will reduce the time to approximately <br /> one week. The County will be asked to bill you directly for <br /> this work. It is possible that the County may require some extra <br /> work or analyses that have not been included in the above scope <br /> of work. This will be determined during the permit review <br /> process . <br /> This proposal assumes that the holes can be backfilled with the <br /> drill cuttings. if bentonite or cement plugs are required this <br /> may require extra time or material costs. N6 _ �o_o y hRti� i,El <br /> 5JC P3 , y -6-90 ZQ_ <br /> TIMETABLE <br /> Work can commence within one week of receiving your signed <br /> authorization to proceed (subject to driller availability) . <br /> Laboratory <br /> )I turn-around time is usuallytendays. The written <br /> Nb-5 GN Z <br />