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s <br /> APPENDIX B <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 plan 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 /> Before drilling, EMCON hand-augered each borehole to 3 to 5 feet below grade A <br /> licensed well driller drilled the borings using a truck-mounted drill rig equipped with <br /> 8-inch-diameter hollow-stem augers The drilling was performed under the guidance of a <br /> field geologist During drilling, soil samples were collected at 5-foot or other appropriate <br /> Intervals using a California-modified, split-spoon sampler equipped with clean brass <br /> sleeves Samples were collected by drilling the borings to a point just above the sampling <br /> depth and then driving the sampler into the soil through the hollow center of the auger <br /> The sampler was driven 18 inches with a standard 140-pound hammer dropped 30 inches <br /> The number of blows required to drive the sampler each successive 6-inch interval was <br /> counted and recorded on the field boring log 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 photoionization detector (PID) was used to <br /> evaluate soil samples for gasoline hydrocarbons Field instruments, such as the PID, are <br /> useful for 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 analysis were removed from the sampler and <br /> quickly sealed in their brass sleeves with aluminum foil, plastic caps, and Teflon`s tape <br /> The respective sample containers were labeled in the field with the job number, sample <br /> sAC\K\2611CLOS 1JRE-951dms 1 B-1 Rev 0 7/18/97 <br /> 22611-100 001 <br />