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AZ <br /> Site Safe <br /> Working To Restore Nature <br /> Plan <br /> This plan describes the safety requirements for drilling, purging, and sampling ground-water <br /> monitoring wells The site safety plan is applicable to personnel of RESNA Industries <br /> (RESNA) who perform work at the site A copy of the site safety plan is available for <br /> reference by appropriate parties during the work The onsite Staff Geologist or Technician <br /> of RESNA act as the Site Safety Officer <br /> Drillina and Soil Sampling <br /> RESNA contacts Underground Service Alert to delineate public utility lines at the site <br /> before initiating drilling Before drilling, the borehole locations are hand-augered 3 to 5 <br /> feet below grade The soil borings are drilled using a truck-mounted rig using 8-, 10-, and <br /> 12-inch-diameter hollow-stem augers for soil borings and borings converted into two-inch <br /> monitoring wells A 10-inch-diameter auger is used for the pumping test well The drilling <br /> is performed under the guidance of a field geologist, and the earth materials are logged as <br /> drilled using the Unified Soil Classification System <br /> During drilling, soil samples are collected at 5-foot or other appropriate intervals using a <br /> California-modified, split-spoon sampler equipped with clean brass sleeves Samples are <br /> taken by driving the sampler into the soil through the hollow center of the auger The <br /> sampler is driven 18 inches with a standard 140-pound hammer dropped 30 inches The <br /> number of blows required to drive the sampler each successive 6-inch interval is counted <br /> and recorded on the field boring log to give an indication of soil consistency <br /> Soil samples are collected, identified, and evaluated for relative levels of hydrocarbons using <br /> a field photolonization detector Field instruments such as the photoionization detector are <br /> useful for indicating relative levels of hydrocarbon vapors but do not detect the <br /> concentration of hydrocarbons present with the same precision as laboratory analyses Any <br /> additional subjective evidence such as soil discoloration or obvious product order is noted <br /> Soil samples collected for laboratory analyses are accompanied by a Chain of Custody <br /> Record that is initiated by the geologist at the site and is completed as the samples are <br /> collected Soil samples collected for possible chemical analyses are promptly sealed with <br /> aluminum foil, plastic caps, and tape They are then labeled and placed in iced storage for <br /> transport to the analytical laboratory <br /> Water Sampling With a Hydropunch <br /> The borings are advanced to dust above ground water and a Hydropunch sampling device <br /> is driven into ground water Groundwater samples are then collected from the Hydropunch <br /> sampling device The water samples are analyzed on 2-hour turnaround, analytical results <br /> are used to confirm the placement of the monitoring wells <br /> 38032-10 <br />