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f <br /> GETTLER-RYAN INC. <br /> FIELD METHODS AND PROCEDURES <br /> Site Safety Plan <br /> Field work performed by Gettler-Ryan Inc (G-R) is conducted in accordance with G-R's <br /> Health and Safety Plan and the Site Safety Plan. G-R personnel and subcontractors who <br /> perform work at the site are briefed on the contents of these plans pnor to initiating site <br /> work The G-R geologist or engineer at the site when the work is performed acts as the <br /> Site Safety Officer G-R utilizes a photoionization detector (PID) to monitor ambient <br /> conditions as part of the Health and Safety Plan <br /> Collection of Soil Samples <br /> Soil borings are dnlled by a California-licensed well driller A G-R geologist is present <br /> to observe the drilling, collect soil samples for description, physical testing, and chemical <br /> analysis, and prepare a log of the exploratory soil bonng Soil samples obtained with a <br /> GeoprobO ng are collected from the soil boring with a split-barrel sampling device fitted <br /> with 1-inch-diameter, clean brass tubes The GeoprobO drives the sampling device <br /> approximately 24 inches, and the filled sampler is then retrieved from the boring The <br /> encountered soils are described using the Unified Soil Classification System (ASTM 2488- <br /> 84) and the Munsell Soil Color Chart or GSA Rock Color Chart <br /> After removal from the sampling device, soil samples for chemical analysis are covered on <br /> both ends with teflon sheeting or aluminum foil, capped, labeled, and place in a cooler with <br /> blue ice for preservation. A chain-of-custody form is initiated in the field and accompanies <br /> the selected soil samples to the analytical laboratory Samples are selected for chemical <br /> analysis based on <br /> a. depth relative to underground storage tanks and existing ground surface <br /> b depth relative to known or suspected groundwater <br /> c presence or absence of contaminant migration pathways <br /> d presence or absence of discoloration or staining <br /> e presence or absence of obvious gasoline hydrocarbon odors <br /> f presence or absence of organic vapors detected by headspace analysis <br /> A-1 <br />