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i <br /> GeoloBuuC?ethnus Inc. Page 5 <br /> Soil Boring Installation Work Plan <br /> Cutter Lumber Site <br /> 3422 S El Dorado,Stockton <br /> Project No 443 2 <br /> November 3, 1995 <br /> 2 Remove the pump and equipment from the water well. Sound the well to <br /> determine its total depth and then survey the well with a down-hole television <br /> camera to determine the condition of the casing and the completion method <br /> and the location of the screened interval. <br /> 2.1 Soil Boring Installation <br /> Geological Technics Inc proposes to install a total of four soil borings to a depth of <br /> 20 feet. As shown on the Site Sketch Map, the borings will be located in the <br /> approximate locations of the former above ground tanks, the pump island and in two <br /> of the most likely sites of the former underground tank(s) <br /> The soil bonngs will be drilled using 3.25 inch outside diameter hand auger <br /> equipment. Soil cuttings will be stockpiled or containenzed in DOT approved 55 <br /> gallon drums, labeled, and stored on site until their proper disposition can be <br /> arranged. Soil samples will be collected for geological and analytical evaluation at <br /> five foot intervals Soil samples will be collected using a 2 0 inch diameter coring <br /> tube and contained in two by six inch brass liners. All soil samples will be sealed with <br /> ,. aluminum foil, capped, labeled and placed in a cooler at 4° Celsius for transport to <br /> the laboratory following Chain of Custody protocol <br /> I Because every soil sample collected will not be submitted for laboratory analysis, a <br /> screening process will be used to gather additional information through field <br /> observation noting sediment type, especially gram size and clay content; moisture <br /> content, visible evidence of contamination, i e., color change due to reduction of iron <br /> or discoloration from hydrocarbons and other pollutants, and the readings above <br /> background on a organic vapor meter (OVM) The OVM is a field portable photo <br /> ionization detector that uses a 10 0 eV Iamp to detect compounds with ionization <br /> potential below 10 0 eV (hydrocarbon range) <br /> The soil borings will be closed as follows after the last soil sample has been <br /> collected, 25 pounds of bentonite will placed at the bottom of each boring and <br /> hydrated with clean tap water Neat cement will be used to close the remaining <br /> length of each boring <br /> I <br />