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on the west side of the clarifier. Soil samples were collected at 5-foot intervals, <br /> starting at the 5-foot depth. The boring locations are shown on Figure 3, Boring <br /> Location Map (Appendix I). <br /> Prior to the start of drilling operations, a Tailgate Health and Safety meeting was <br /> conducted by the Project Manager to discuss potential health and safety risks and <br /> the appropriate precautions required to reduce such risks. All field personnel <br /> present signed the Attendance List in the Health and Safety Plan (Appendix III). <br /> Pacific OnSite Services, Inc. of Los Angeles, California performed the drilling <br /> under the supervision of a CRC Registered Geologist. Pacific OnSite Services <br /> used a Geoprobe system for advancing the borings by coring. The Geoprobe is <br /> a van-mounted hydraulically-powered drilling and coring mechanism. <br /> The Geoprobe system of coring consisted of a conical piston tip and cutting shoe <br /> mounted on a 1-inch outside diameter hollow probe rods. The probe rods were <br /> lined with two (2) feet of 0.96 inch diameter by 6-inch long brass liners (tube) <br /> in which soil samples were collected. The probe rod assembly was literally <br /> "pushed" into the soil by the hydraulically-powered machine. When the probe <br /> tip encountered resistance to the "push" due to rocks or compacted material, <br /> penetration was achieved by driving with a percussion hammer until the desired <br /> sampling point was reached. A piston stop-pin at the trailing end of the sampler <br /> was removed by means of extension rods after the sampler was driven to the <br /> desired depth. This enabled the piston tip to retract into the sample tube as it was <br /> displaced by the soil sample being taken. The tool string was then pulled out and <br /> the sample liners extracted. <br /> The second sample tube was retained, the ends of the tube covered with teflon <br /> material and plastic caps, labeled, double-bagged in plastic bags, placed on ice <br /> in a portable cooler and entered into a chain of custody form. A portion of each <br /> soil from the bottom sample tube was placed in a sealable plastic bag, <br /> disaggregated inside the bag to release any volatile organics that may be present, <br /> and field-screened using a PID. PID readings were recorded on the boring logs. <br /> The soil samples were collected and logged by a California Registered Geologist. <br /> Soil descriptions were in accordance with the Unified Soil Classification System <br /> (USCS) as outlined in the American Society of Testing Materials (ASTM) D2487. <br /> Logs of the borings are included in this report as Appendix V. <br /> Two (2) soil borings (HA1 and HA2) were hand augered to a depth of 5 feet on <br /> January 31, 1995. These borings were placed within a 5-foot distance from <br /> boring B1 to further investigate the occurrence of phenol in boring B1 at 5 feet <br /> bgs. After hand augering to a depth of 5 feet bgs, soil samples were obtained <br /> using a hand-held drive sampler provided with a 2-inch diameter by 6-inch long <br /> brass tube liner. The protocol for sample retrieval and preparation observed for <br /> the Geoprobe sampling were also followed for the hand auger samples. <br /> CRC Environmental Risk Management,Inc. Project 82100-247-5 <br /> American Savings Bank 1888 Lockheed Court <br /> February 13, 1995 4 Stockton,California <br />