ARCHIVED REPORTS XR0006437 - Laserfiche WebLink

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"Arum Working to Restore Nature FIELD PROCEDURES Site Safety Placa This plan describes the safety requirements for field work performed at the site The site safety plan is applicable to personnel of RESNA Industries Inc 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 Inc. acts as the Site Safety Officer Drilling-Soil Borings We contacted Underground Service Alert at least 48 hours before drilling to delineate public utility lines at the site Before drilling, we hand augered each borehole to 3 to 5 feet below grade A licensed well driller drilled the borings using a truck-mounted drill rig equipped with 8- inch-outside-diameter by 4-1/4-inch-inside-diameter and 10-inch-outside-diameter by 6-1/4- inch-inside-diameter, continuous-flight, hollow-stem augers The drilling was performed under the guidance of a field geologist 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 just above the sampling depth and 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 The earth materials were logged using visual and manual methods as drilled using the Unified Soil Classification System A photoionization detector (PID) was used to evaluate soil samples for gasoline hydrocarbons. Field instruments such as the PID are useful for indicating relative levels of gasoline hydrocarbon vapors but do not detect the concentration of gasoline hydrocarbons present with the same precision as laboratory analyses Subjective evidence of gasoline hydrocarbons such as soil discoloration or obvious odor was noted Sample Labeling and Handling Soil samples selected for possible laboratory analysis were removed from the sampler and quickly sealed in their brass sleeves with aluminum foil, plastic caps, and Teflon tape The respective sample containers were labeled in the field with the job number, sample location, depth if applicable, and date, and promptly placed in iced storage for transport to the laboratory Chain of Custody Records were initiated in the field by the geologist and accompanied the samples to a laboratory certified by the State of California to perform the analyses requested • 1215bnn/123020 01