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AdvancedGeo <br />Environmental <br />'Ogg. <br />10 April 2017 <br />AGE-NC Project No. 12-2169 <br />Page 2 of 6 <br />2.0. SCOPE OF WORK <br />Due to petroleum-impacted soil documented at the site during the UST removal and <br />previous soil drilling activities, the threat of potential soil-vapor intrusion into the building <br />must be investigated. Therefore, AGE is proposing to drill and sample two soil-vapor <br />borings (SVI-1 and SVI-2) to characterize the potential soil-vapor intrusion to site <br />buildings. The proposed boring locations for SVI-1 and SVI-2 are located to assess soil- <br />vapor near the southern side of the commercial store front building and the eastern side <br />of the auto repair building, where the UST was formerly located. Drilling and field activities <br />will consist of the following tasks: <br />Permitting and pre-field work activities, <br />Drilling of soil borings and collection of soil-vapor samples, <br />Preparation of report of findings. <br />Each of these tasks are discussed below in detail. <br />2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES <br />Applicable drilling permits will be submitted to the San Joaquin County Environmental <br />Health Department (EHD. As required by EHD permitting, a health and safety plan will be <br />prepared in accordance with Occupational Safety and Health Guidance Manual for <br />Hazardous Waste Site Activities (National Institute for Occupational Safety and Health <br />Administration, U.S. Coast Guard and U.S. Environmental Protection Agency). Prior to <br />drilling activities, each proposed drilling location will be clearly marked and a utility <br />clearance obtained through Underground Service Alert. <br />2.2. DRILLING AND SAMPLING <br />AGE proposes to drill two (2) shallow, soil borings (SVI-1 and SVI-2) at the site as part of <br />a soil-vapor investigation and to evaluate potential vapor intrusion. Proposed soil boring <br />locations are illustrated on Figure 2. <br />Based upon laboratory results of soil samples collected during the investigation, AGE <br />proposes the soil boring locations in the following areas: <br />Soil boring SVI-1 will be located adjacent the southeast edge of the commercial <br />building north of the eastern most former UST area. <br />Soil boring SVI-2 will be located near the middle of the eastern side of the auto <br />repair building, edge of former UST area, and approximately 5 feet east of the site <br />building structure.