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Work Plan—Soil Boring Installation Page 2 Malott's Honda Yamaha Project 328.2 August 27, 2001 2.1 Field Work The field work associated with this work plan will consist of mobilizing to the site with a Geo-Probe drilling rig and advancing four soil borings at designated locations for the purpose of obtaining soil and groundwater samples. 2.1.1 Geo-Probe Soil Borings A group of four Geo-Probe soil borings will be advanced to a depth sufficient to penetrate the surface of groundwater. This is estimated to lie at a depth of about 10 feet. The borings, designated S13-1, SB-2, S13-3, & SB-4 will be located at designated sites as shown on the attached site map. Soil samples will be collected at 5-foot intervals in each boring and at the base of each boring. A groundwater sample will also be collected from the base of each boring. The soil borings will be drilled using 1.5" outside diameter Geo-Probe drilling equipment owned and operated by V & W Drilling (C-57 License #720904). The borings will be advanced to the groundwater surface estimated to be at a depth of about 15 to 20 feet below grade. Upon reaching total depth in each boring and collecting a final soil and groundwater sample,the boring will be filled to grade with neat cement. The Geo-Probe is a truck mounted drilling system that uses direct push methodology to collect soil and groundwater samples. Four foot long by 1.5 inch diameter stainless steel rods are pushed or hammered into the ground using a hydraulic ram or the hydraulically actuated hammer mounted on the ram. Soil samples are collected using a 1.5 foot long by 1.5 inch inside diameter drive sampler lined with a plastic sample sleeve. This device is activated by removing a retaining bolt from the top of the device by inserting rods through the hollow stem of the probe rods. Removing this retaining bolt allows the drive point to retract through the sampling tube and a sample to be collected. 2.1.2 Geology A detailed log will be made of each boring. The information to be noted include such data as sample depths, soil / sediment type and description (color, texture, composition, hardness, moisture content, and post-depositional changes that have occurred in the sediments), and horizons of detectable contamination(detected by field methods). 2.2 Soil Sampling and Analyses The soil sample collection procedure will be as follows. Upon retrieval, the end of each plastic sample tube removed from the coring device and possibly submitted for laboratory analysis will be sealed with Teflon sheets, capped with plastic end caps, secured with tape, labeled and placed in a cooler at 4° Celsius for transport to the laboratory using Chain of 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 Modesto, Ca 95356 Fax: (209)569-0295