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' 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 safety <br />' plan is applicable to personnel of EMCON who perform the field work A copy of the site safety <br /> plan is available for reference by appropriate parties during the work. The on-site representative <br /> of EMCON acts as the Site Safety Officer <br /> 1 <br /> Drilling Soil Borings <br />' EMCON contacted Underground Service Alert at least 48 hours before drilling to delineate public <br /> utility lines at the site Before drilling, we hand augured each borehole to 3 to 5 feet below grade <br /> A licensed well driller drilled the borings using a truck-mounted drill ng equipped with <br /> 8-inch-diameter hollow-stem augers The drilling was performed under the guidance of a field <br /> geologist During drilling, soil samples were collected at 5-foot or other appropriate intervals <br />' using a California-modified, split-spoon sampler equipped with clean brass sleeves Samples were <br /> collected by drilling the boring to a point dust above the sampling depth and then driving the <br /> sampler into the soil through the hollow center of the auger The sampler was driven 18 inches <br />' with a standard 140-pound hammer dropped 30 inches The number of blows required to drive <br /> the sampler each successive 6-inch interval was counted and recorded on the field boring log to <br /> give an indication of soil consistency <br />' The earth materials were logged using visual and manual methods as drilled using the Unified Soil <br /> Classification System A flame ionization detector (FID) was used to evaluate soil samples for <br />' gasoline hydrocarbons Field instruments such as FIDs are useful for indicating relative levels of <br /> gasoline hydrocarbon vapors but do not detect the concentration of gasoline hydrocarbons present <br />' with the same precision as laboratory analyses Subjective evidence of gasoline hydrocarbons such <br /> as soil discoloration or obvious odor was noted <br />' Sample Labeling and Handling <br />' Soil samples selected for possible laboratory analysis were removed from the sampler and quickly <br /> sealed in their brass sleeves, plastic caps, and Teflon' tape The respective sample containers were <br /> labeled in the field with the fob number, sample location, depth if applicable, and date, and <br /> 5A('\N\PJ2\2605�26051010 IBS 971,cib 2 A-1 Emcon <br />' 22605,101 001 Rev 0,8/4/97 <br />