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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 Smith Technology Corporation 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 Smith Technology acts as the Site Safety Officer. Drilling Methods Before drilling begins, Smith Technology notifies Underground Service Alert so that approximate locations of underground utility lines and structures can be marked. The soil borings are started by hand-angering or probing to a depth of 3 to 5 feet to minimize the possibility of damaging underground utilities. Borings are drilled with a CME 55 or similar drill rig equipped with continuous-flight, hollow- stem augers. The augers are steam-cleaned before use in each boring to minimize cross- contamination of the borings. The drill cuttings are stored in Department of Transportation (DOT) 55-gallon drums or stockpiled onsite and covered with plastic pending disposal at an appropriate disposal facility. Soil Sampling in Borings Soil samples for analysis and identification are collected at approximately 5-foot intervals from the borings during drilling. Soil samples are collected by advancing the boring to a point just above the sampling depth and then driving a California-modified, split-spoon sampler containing clean brass sleeves through the hollow center of the auger into the soil. The sampler is driven 18 inches with a standard 140-pound hammer repeatedly dropped 30 inches. The number of blows needed to drive the sampler each successive 6 inches is counted and recorded to evaluate the relative consistency of the soil. Sampling equipment is cleaned between each use with an industrial non-phosphate soap and clean tap water. Soil Sample Labeling and Handling The soil samples selected for possible laboratory analysis are removed from the sampler and quickly sealed in their brass sleeves with Teflon tape and plastic caps. The respective sample containers are labeled in the field with the job number, sample location and depth, and date, and promptly placed in iced storage for transport to the laboratory. Chain of Custody Records are initiated in the field by the technician and accompany the samples to a laboratory certified by the State of California to perform the requested analyses. SHELLS\FLDMTHDS.doc 1