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°ter <br /> WA <br /> r_ FPlan May 17, 1992 <br /> o. 2130, Stockton, California AGS 30003-1W <br /> FIELD PROCEDURES <br /> Safety 1 <br /> The site safety plan dated May 1, 1991 (Appendix B), describes the basic safety <br /> requirements for the drilling of soil borings at the work site and is updated for propane <br /> for the vapor-extraction test. The safety plan is applicable to personnel and <br /> subcontractors of Applied GeoSystems. The Applied GeoSystems' geologist will be the <br /> Site Safety Officer. Personnel at the site will be informed of the contents of the site <br /> safety plan before work begins. A copy of the plan will be kept at the work site and will <br /> be available for reference by appropriate parties during the work. An Emergency Route <br /> Map (Plate P-1S) is included in Appendix B. <br /> 'I • o ureses <br /> Before drilling,we will acquire a permit from the S3PHS for drilling a maximum of <br /> seven soil borings. Applied GeoSystems will contact Underground Service Alert at least <br /> 48 hours before drilling to delineate public utility lines at the site. Before drilling, we <br /> will hand auger each borehole to 3 to 5 feet below grade. <br /> We will observe a licensed we <br /> ll driller drill four 8-inch-diameter soil borings near the <br /> existing gasoline tank cavity three 10-inch-diameter soil borings north of the station <br /> buildinA truckmounted rig equipped with hollow-stem augers will be used. The <br /> drilling will be performed under the guidance of a field geologist. The earth materials <br /> will_be-logged-using-visual-and-manual-methods asArilled-using-the:Unified-Soil--- ----- -- ---------— -- <br /> Classification System. A photoionization detector (PID) will be used to evaluate soil <br /> samples for gasoline hydrocarbons. held instruments such as the P'ID are., useful for <br /> i <br /> 6 <br /> .4pe'/led GeoSystems <br />