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Clayton <br /> ENVIRONti1ENTAL <br /> CONSULTANTS <br /> Work Plan <br /> for <br /> Further Subsurface Investigation <br /> at <br /> Navy Drive <br /> Stockton, California <br /> Clayton Project No. 57789.00 <br /> September 8, 1994 <br /> 1.0 INTRODUCTION <br /> Clayton Environmental Consultants, Inc. was retained by City of Stockton to develop and <br /> implement a work plan for subsurface investigations along the proposed sewer project <br /> along Navy Drive in Stockton, California (Figure 1). This project was authorized by City <br /> of Stockton Project Manager, Mr. Wayne Smith. <br /> 2.0 SCOPE OF WORK <br /> The purpose of this investigation is to determine if the soil and groundwater beneath or <br /> near the proposed sewer line has been impacted by petroleum hydrocarbons. The scope of <br /> this work plan is based on the information and bid requirements provided by Mr. Smith on <br /> July 25, 1994. <br /> 2.1 HEALTH AND SAFETY PLAN <br /> Before commencing the field activities A health and safety plan will be prepared for the <br /> work outlined in this work plan. The health and safety plan will be in accordance with <br /> the requirements of Title 29 of the Code of Federal Regulations, Section 1910.120 (29 <br /> CFR 1910.120) and California Occupational Safety and Health Administration <br /> (Cal/OSHA) General Industry Safety Order (GISO) 5192. <br /> 2.2 BOREHOLE DRILLING AND MONITORING WELLS INSTALLATION <br /> Clayton will install six monitoring wells (MW-1 through MW-6) along the proposed <br /> location of the sewer line to monitor the soil and groundwater for the presence of <br /> petroleum hydrocarbons and metals. The proposed monitoring wells will be placed along <br /> Navy Drive. The locations of the proposed monitoring wells are shown in Figure 2. <br /> During the drilling of the monitoring wells, a Clayton geologist will log the soil <br /> characteristics in the field using the Unified Soil Classification System. Distinguishing <br /> features such as color, odor, and relative soil moisture content will be noted. Drilling <br /> activities will be conducted in accordance with the Regional Water Quality Control Board <br /> (RWQCB) guidelines and Clayton's Drilling, Well Construction, and Sampling Protocols <br /> for Borehole/Monitoring Well Installation (Appendix), under the supervision of a civil <br /> engineer or a geologist registered in the State of California. <br /> 1 <br /> ACTI V E\,57789-00.W PN <br />