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petroleum hydrocarbons may have impacted the subsurface of the subject <br /> property. Therefore, the presence of the former gasoline service station and <br /> presumed storage of petroleum hydrocarbons in USTs is considered a REC. <br /> 4.0 OBJECTIVE <br /> The scope of work is designed to assess if the subject property has been impacted by the <br /> historical use of USTs at the subject property. <br /> 4.1 SCOPE OF WORK <br /> A total of 6 direct push borings (SB-1 through SB-6) are proposed to be performed onsite <br /> for the collection of soil samples. Soil samples are proposed to be collected between 14 <br /> and 16 feet below ground surface (bgs) from each boring. All borings will be continuously <br /> cored and field-screen for contaminants of concern using a photo-ionize detection meter <br /> (PID). All borings will be logged in accordance with standard geologic procedures by a <br /> qualified geologist or engineer. See Figure 3 for a site map with proposed sample <br /> locations. <br /> The investigation will be carried out in accordance with the Tri-Regional Guidelines <br /> under the supervision of a state of California registered Professional Geologist. All <br /> borings will be advanced by a licensed C-57 contractor. <br /> The scope of work has been divided into 4 tasks as follows: <br /> Task 1 Project setup (underground service alert, permits etc.); <br /> Task 2 Soil Boring, Classification, Field Screening, and Sampling; <br /> Task 3 Chemical Analysis; <br /> Task 4 Technical Report; <br /> A summary of each task follows: <br /> 4.1.1 Project Setup <br /> Upon approval of this Work Plan and prior to the initiation of field activities, the <br /> following subtasks will be undertaken: <br /> 1. Obtain boring permits from San Joaquin County Environmental Health <br /> Department <br /> 2. Mark boring locations and clear for underground utilities. <br /> 3. Notify SJCEHD a minimum of 48 hours before scheduled work is to begin <br /> 04117124 A&M ENVIRONMENTAL SERVICES 2 <br /> Work Plan for Site Investigation <br /> 1537 N. Wilson Way, Stockton, CA <br />