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1 <br /> APPENDIX A <br />' FIELD PROCEDURES <br /> Site Safety Plan <br />' This plan describes the safety requirements for field work performed at the site The site <br /> safety plan is applicable to personnel of EMCON who perform the field work A copy of <br /> the site safety pian is available for reference by appropriate parties during the work The <br /> on-site representative of EMCON acts as the Site Safety Officer <br /> Drilling Soil Borings <br /> We contacted Underground Service Alert at least 48 hours before drilling to delineate <br /> public utility lines at the site Before drilling, we hand augured each borehole to 3 to 5 feet <br /> below grade A licensed well driller drilled the borings using a truck-mounted dnll rig <br /> equipped with 6 25-inch, 8-inch, or 10-inch-diameter hollow-stem augers The drilling was <br /> performed under the guidance of a field geologist During drilling, soil samples were <br /> collected at 5-foot or other appropriate intervals using a Califorma-modified, split-spoon <br />' sampler equipped with clean brass sleeves Samples were collected by drilling the boring <br /> to a point just above the sampling depth and then driving the sampler into the soil through <br /> the hollow center of the auger The sampler was driven 18 inches with a standard <br />' 140-pound hammer dropped 30 inches The number of blows required to dnve the <br /> sampler each successive 6-mch interval was counted and recorded on the field bonng log <br /> to give an indication of soil consistency <br />' The earth materials were logged using visual and manual methods as drilled using the <br /> Unified Soil Classification System A phototonization detector (PID) was used to evaluate <br />' soil samples for gasoline hydrocarbons Field instruments, such as the PID, are useful for <br /> indicating relative levels of gasoline hydrocarbon vapors but do not detect the <br /> concentration of gasoline hydrocarbons present with the same precision as laboratory <br />' analyses Subjective evidence of gasoline hydrocarbons, such as soil discoloration or <br /> obvious odor, was noted <br /> Sample Labeling and Handling <br /> Soil samples selected for possible laboratory analysts were removed from the sampler and <br /> quickly sealed in their brass sleeves with aluminum foil, plastic caps, and Teflon& tape <br />' SAC\N IPJO\OF9MF900020 4cs-95 PAS 2 A-l Rev 0 $/22/95 <br />