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Phase II Work Plan 304 E. Weber Avenue Page 2 3.1 SITE PREPARATION Condor will complete soil boring permit applications and obtain the required permits from the San Joaquin County Environmental Health Department (SJCEHD) prior to the fieldwork. Condor will coordinate all field activities with the SJCEHD. The proposed boring locations will be marked with white paint and Underground Service Alert (USA) will be notified at least 48 hours in advance of the fieldwork to locate and identify underground utilities in and near the work area. 3.2 HEALTH AND SAFETY REQUIREMENTS Prior to initiating fieldwork at the Site, a tailgate safety meeting will be held and field personnel will familiarize themselves with the Site-specific Health and Safety (H&S) Plan, which will be discussed and presented for their signatures. The H&S Plan pertains to field activities and includes information such as potential hazards encountered at the Site, personal protective equipment, and directions and telephone numbers to the nearest emergency medical services and hospital. A copy of the H&S Plan is attached. Personnel working at the Site will have completed 40 hours of classroom training (OSHA 29 CFR 1920.120, HAZWOPER) and 24 hours of supervised field training concerning hazards that may be encountered at hazardous waste sites. Additionally, field personnel working at the Site will participate in a medical monitoring program. 3.3 DIRECT PUSH BORING PROCEDURES At least 12 direct push borings will be advanced within the property. The proposed boring locations are shown on Figure 3. All of the borings will be advanced to approximately 40 feet bgs or to first encountered groundwater. A groundwater sample will be collected from each boring. The direct push borings will be hydraulically advanced using a 2-inch diameter conical bit. The bit and associated push rods will be thoroughly cleaned before each boring is advanced. The bit and rods will be cleaned using laboratory-grade, non-phosphate detergent and deionized water and double rinsed with deionized water. Upon completion of the borings and sampling, the borings will be grouted with neat cement to surface using a tremie pipe. Continuous core soil samples will be collected from the boring with a 1.75-inch outside diameter (0.D.), 4-foot long core barrel fitted with a clean, single use, polyethylene liner. The soil sampling equipment will be cleaned prior to collecting the sample using laboratory-grade, non-phosphate detergent and deionized water and double rinsed with deionized water. During the sampling, the core barrel will be driven in 4-foot intervals. The sample liner will be extracted from the core barrel and used for geologic logging and field observations. The soil samples will be logged according to the Unified Soil Classification System (USCS). Portions of the soil samples will be placed in polyethylene bags and checked with a photoionization detector (Pa) for the presence of volatile hydrocarbons. Geologic logs will be prepared containing field observations including soil type, estimated moisture content, KID measurements, and the presence of staining or odor. Soil samples will be collected from the borings for laboratory analyses at 5-foot intervals beginning at approximately 0.5 foot bgs, or wherever contaminated soil is identified, for up to seven soil samples per boring. Up to 84 samples will be collected from the borings with an additional six samples to be collected if warranted. Soil cuttings from each boring will be placed in a 55-gallon drum, sealed, labeled, and left on-site to await disposal pending results of the laboratory analyses. CONDOR