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• September 15, 1993 Working To Restore Nature <br /> • A Teichert & Son, Tracy, California <br /> FIELD PROCEDURES <br /> Site Safety Plan <br /> • <br /> This plan describes the safety requirements for field work performed at the site The site <br /> safety plan is applicable to personnel of RESNA Industries who perform the field work A <br /> copy of the site safety plan is available for reference by appropriate parties during the work <br /> The onsite representative of RESNA Industries acts as the Site Safety Officer <br /> • <br /> Drilling and Soil Samplin <br /> RESNA Industries contacted Underground Service Alert to delineate public utility lines at <br /> the site before initiating drilling Before drilling, the borehole location was hand-augered <br /> • 3 to S feet below grade <br /> The soil boring was drilled using a truckmounted rig using 8-inch-diameter and 10-inch- <br /> diameter hollow-stem augers The drilling was performed under the guidance of a field <br /> geologist, and the earth materials were logged as drilled using the Unified Soil Classification <br /> • System. <br /> During drilling, soil samples were collected at 5-foot or other appropriate intervals using a <br /> California-modified, split-spoon sampler equipped with clean brass sleeves Samples were <br /> collected by drilling the boring to a point immediately above the sampling depth, then <br /> driving the sampler into the soil through the hollow center of the auger The sampler was <br /> • driven 18 inches with a standard 140-pound hammer dropped 30 inches The number of <br /> blows required to drive the sampler each successive 6-inch interval was counted and <br /> recorded on the field boring log to give an indication of soil consistency <br /> Soil samples were collected, identified, and evaluated for relative levels of hydrocarbons <br /> • using a field photoionization detector (PID) Field instruments such as the PID are useful <br /> for indicating relative levels of hydrocarbon vapors but do not detect the concentration of <br /> hydrocarbons present with the same precision as laboratory analyses Any additional <br /> subjective evidence such as soil discoloration or obvious product order was noted <br /> ! Soil cuttings generated during drilling were stored at the site on and covered with plastic <br /> sheeting Four soil samples were collected from drill cuttings and composite into one <br /> sample at the laboratory to evaluate disposal options for the soil <br /> 0• <br /> 0803gtak <br /> 123009-1 <br />