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Stantec ` PHASE II ENVIRONMENTAL SITE ASSESSMENT REPORT 2.0 Field Activities 2.1 HEALTH AND SAFETY PROCEDURES 2.1.1 Adherence to the Health and Safety Plan The HASP was prepared in accordance with Cal OSHA and federal regulations (29 CFR 1910.120). The HASP identifies hazards associated with the tasks performed on this project and addresses the appropriate management techniques required to reduce related risks. The HASP was presented to Stantec personnel, subcontractors, and approved visitors to provide them with an awareness to avoid hazards associated with this project. All Stantec personnel and subcontractors present on site had completed the 40-hour Hazardous Waste Operations and Emergency Response (HAZWOPER) training, 29 CFR, Part 1910, Section 120 (EPA, 1988). 2.1.2 Daily Safety Meeting and Safety Awareness Daily safety tailgate meetings, attended by on-site personnel, were held at the beginning of each work day and as changing Site conditions dictated to discuss the scope of work, health and safety related issues during the performance of soil vapor investigation activities, and activities to be completed that day. Discussions were aimed at increasing the awareness and management of hazards and risks associated with each task to be completed on the Site. 2.2 SOIL VAPOR INVESTIGATION 2.2.1 Soil Vapor Borehole and Probe Installation Prior to the field work, the proposed borehole locations were marked with white paint. Underground Services Alert (USA) was contacted on February 28, 2011 to mark the existing utility locations at the Site (USA ticket number 0064734). On March 8, 2011, Stantec personnel advanced a total of 6 boreholes for the temporary soil vapor sampling points (Figure 2). The boreholes were advanced using a concrete saw, a chipping hammer, and a 3.25-inch-diameter hand auger to the maximum depth of approximately 5 feet bgs. The concrete saw and chipping hammer was used to remove the concrete slab in the soil borehole locations SV-1 through SV-5 and the asphalt and base rock at soil borehole SV-6. The hand auger was decontaminated prior to and in between drilling each soil vapor sampling borehole. Soil vapor boreholes SV-1 and SV-2 were placed within the northern warehouse. Soil vapor boreholes SV-3 through SV-5 were placed within the southern warehouse. Soil vapor borehole SV-5 was located adjacent to the former parts washer that was located in the southwest corner of the southern warehouse in the shop portion of the building. iiprojects\calpine\lodi\reportUodi.wrpt.docx 2.1