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ameO <br /> of SVE/AS at Shop 10 to remediate a similar petroleum hydrocarbon release suggests that this <br /> technology can be successfully applied at this site. <br /> Before a full scale SVE/AS system can be designed, a more detailed evaluation of the extent <br /> Y 9 <br /> of petroleum hydrocarbon impacts in the source area is necessary so that the AS/SVE wells <br /> can be properly located (laterally and vertically)to effectively deliver air to the areas of highest <br /> petroleum hydrocarbon impacts. In addition to further source area characterization, AMEC <br /> recommends that an AS pilot test be conducted to confirm that air can be effectively delivered <br /> to the subsurface to promote biodegradation and volatilization of contaminants in the source <br /> area and to develop Site specific AS design parameters. <br /> 3.0 PROPOSED FIELD ACTIVITIES <br /> As discussed in the previous section, AMEC is proposing conduct an investigation within the <br /> source area to determine the location of the remaining petroleum hydrocarbon mass in soil <br /> and groundwater. AMEC will then use this information to locate an AS well and a series of <br /> observation wells in the area of highest petroleum impacts to facilitate an AS pilot test. The <br /> following subsections present the investigation objectives, pre-field activities, Site <br /> characterization field activities, and rationale and approach for installing the new wells. The AS <br /> pilot test activities are then presented in Section 4.0. <br /> 3.1 SITE INVESTIGATION OBJECTIVES <br /> The objectives of the Site Investigation are as follows: <br /> 1. Better characterize the lateral and vertical,extent of petroleum hydrocarbons in the <br /> source area; and <br /> 2. Identify the area of highest petroleum hydrocarbon impacts for installation of the AS <br /> pilot test well. <br /> L.i 3.2 PRE-FIELD ACTIVITIES <br /> Pre-field activities will include development of a health and safety plan, procurement of permits <br /> and property access, and underground utility clearance. <br /> 3.2.1 Health and Safety Plan <br /> AMEC will prepare a Site-specific health and safety plan (HSP)to protect the public and Site <br /> personnel during the investigation and pilot test fieldwork. The HSP will include health and <br /> safety precautions for known and potential physical and chemical hazards anticipated for the <br /> field effort. A map of the route to the nearest hospital and material safety data sheets (MSDS), <br /> LAMEC Geomatrix, Inc. <br /> P:\Project\14000s\14443_Caltrans\TO 10\11000_PLANSWS WP_March 2010\HS WP.doc 5 <br />