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� li"�► %"'M Working to Restore Nature FIELD PROCEDURES Site Safety Plan This plan describes the safety requirements for field work performed at the site The site safety plan is applicable to personnel of RESNA Industries who perform the field work A copy of the site safety plan is available for reference by appropriate parties during the work The onsite representative of RESNA Industries acts as the Site Safety Officer Drillinu and Soil Sampling RESNA contacted Underground Service Alert to delineate public utility lines at the site before initiating drilling Before drilling, the borehole location was hand-augered 3 to 5 feet below grade The soil boring was drilled using a truck-mounted rig using 10-inch-diameter hollow-stem augers The drilling was performed under the guidance of a field geologist, and the earth materials were logged as drilled using the Unified Soil Classification System During drilling, soil samples were collected at 5-foot or other appropriate intervals using a California-modified, split-spoon sampler equipped with clean brass sleeves Samples were collected by drilling the boring to a point immediately above the sampling depth, then driving the sampler into the soil through the hollow center of the auger The sampler was driven 18 inches with a standard 140-pound hammer dropped 30 inches The number of blows required to drive the sampler each successive 6-inch interval was counted and recorded on the field boring log to give an indication of soil consistency Soil samples were collected, identified, and evaluated for relative levels of hydrocarbons using a field phototonization detector (PID) Field instruments such as the PID are useful for indicating relative levels of hydrocarbon vapors but do not detect the concentration of hydrocarbons present with the same precision as laboratory analyses Additional subjective evidence such as soil discoloration or obvious product order was noted Soil cuttings generated during drilling were stored at the site on and covered with plastic sheeting Four soil samples were collected from drill cuttings and composite into one sample at the laboratory to evaluate disposal options for the soil Sampling of Drill Cuttings Drill cuttings were sampled by scraping 6 to 12 inches of soil off the stockpile surface A sample was then collected by driving a hand-operated percussion sampler, equipped with a clean brass sleeve, into the stockpiled soil Four soil samples were collected from the drill cuttings and composite into one sample for laboratory analyses The soil samples selected for possible laboratory analysis were removed from the sampler and quickly sealed in their 1117shoo/123013 01