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F Site.Safety Plan IELD PROCEDURES Tins 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. 1 Drilling and Soil Samnlin:: 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 1 below grade. The soil boring was drilled using a truck-mounted rig using 8-inch-diameter and 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 �l 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. r Soil samples were collected, identified, and evaluated for relative levels of hydrocarbons using a field photoionization 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. Any 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 composited into one sample at the laboratory to evaluate disposal options for the soil. Monitoring-Well Construction Monitoring wells (MW-1 through MW-7) were used to evaluate the ground-water flow direction and whether hydrocarbons were present in the ground water near suspected sources of hydrocarbons and at the margins of the site. Momtoring wells were constructed in the borings with thread-jointed, 4-inch-innerdiameter, Schedule 40 PVC casing No •f D chemical cements, glues, or solvents were used in well construction. The screened portion 0.526mar 31009-4 1 r