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ICF KRIS l Task 2: Site Health and Safety Plan Preparation As required by federal law, a Health and Safety Plan addressing potential concerns for workers at the Site will be prepared and reviewed with ICF-Kaiser field personnel and subcontractors prior to the initiation of fieldwork. Task 3: Permitting and Utility Clearance Permits for drilling the proposed soil'borings will be obtained from the San Joaquin County Department of Public Works prior to conducting this field work. The soil boring.locations will be checked for the presence of utility lines and,subsurface structures, to the extentpossible, prior to'drilling,"using geophysical•techniques provided by a professional locating service. Underground Service Alert (USA) will also bo-'notified prior to the initiation of field work, so the location of public utilities in the vicinity of drilling can be identified. Task 4: Soil Sampling Soil Borings - Soil samples will be.collected from two proposed boring locations in the vicinity of the former Tank 4 excavation area (Figure 1). One boring will be advanced near the former location of Tank 4.where strong odors were detected by Mary Meays of the San Joaquin County Environmental Health Division during re-excavation in the former Tank 4 vicinity. Due to the reported laboratory detection of 16 mg/kg total xylenes in the excavation sample "East-20 feet North," a second boring will be advanced near the eastern excavation limits for Tank 4. This boring will be advanced at a slant angle of 20 degrees-to obtain samples beneath the Ice Plant building, located just eastof the former excavation area. Both borings will be advanced to depths of approximately.40 feet. However, if field observations aiid.screening of soil samples with a ,photoionization detector indicate significant petroleum hydrocarbon concentrations at 40 feet, then deeper soil samples-will be obtained. I Stock iled Soil To assess hydrocarbon concentrations within the stockpiled soil originating froth the Tank 4 excavation', ten soil samples will be obtained at 3-foot and 5-foot depths within the soil stockpiled at the Union Ice Company facility at 1320 West Weber Avenue using a hand -operated drive sampler (slam hammer). Soil Sampling Methods - Soil samples will be collected from the borings drilled by'hollow-stem augen method using a modified California_sampler. Samples from,the stockpiled soil will be obtained using the manual drive sampler. All samples will,-be.collected in clean brass liners. After collection, each brass liner will be sealed, labeled and immediately placed in a chilled cooler for transportation to a laboratory.. Strict chain-of-custody procedures will be followed during sample collection'and delivery to the laboratory. All sampling tools will be cleaned with Alconox (a laboratory-grade detergent) prior to use at each location. All drilling equipment will be steam-cleaned prior to each use. After completion of soil boring sampling, the borings will be abandoned in accordance with San County Joaquin CDepartment of Public Works guidelines. Waste soils and water produced by the q tY p drilling and sampling activities will be placed in 55-gallon drums and labelled appropriately by ICF jmhinioeiceldawsompm 2