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AWAMAkNAM Working to Restore Nature Siteafe This site safety plan describes the basic safety requirements for the drilling project at the work site The site safety plan is applicable to personnel of RESNA Industries (RESNA) and to subcontractors of RESNA RESNA personnel and subcontractors of RESNA scheduled to perform work at the site were informed of the contents of the site safety plan before work began A copy of the site safety plan was kept at the work site and was available for reference by appropriate parties during the work The representative of RESNA acted as the Site Safety Officer. Drilline and Soil Sampling RESNA contacts Underground Service Alert to delineate public utility lines at the site before initiating drilling Before drilling, the borehole locations are hand-augered 3 to S feet below grade The soil borings are drilled using a truck-mounted rig using 8-, 10-, and 12-inch-diameter hollow-stem augers The drilling is performed under the guidance of a field geologist, and the earth materials are logged as drilled using the Unified Soil Classification System During drilling, soil samples are collected at 5-foot or other appropriate intervals using a California-modified, split-spoon sampler equipped with clean brass sleeves Samples are taken by driving the sampler into the soil through the hollow center of the auger The sampler is 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 is counted and recorded on the field boring log to give an indication of soil consistency Soil samples are collected, identified, and evaluated for relative levels of hydrocarbons using a field photoionization detector Field instruments such as the photoionization detector 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 is noted Soil samples collected for laboratory analyses are accompanied by a Chain of Custody Record that is initiated by the geologist at the site and is completed as the samples are collected Soil samples collected for possible chemical analyses are promptly sealed with aluminum foil, plastic caps, and tape They are then labeled and placed in iced storage for transport to the analytical laboratory Well Construction The wells are constructed using clean 2-, 4-, or 6-inch-inner-diameter, thread-jointed, Schedule 40 polyvinyl chloride (PVC) casing No chemicals, glues, or solvents are used in 31009.10