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Task Z Health and Safety Plan <br /> A site-specific Health and Safety Plan will be prepared for field work <br /> Task 3 Utility Clearance <br /> Proposed drilling locations will be marked and their locations cleared through Underground <br /> Services Alert (USA) prior to drilling <br /> Task 4 Soil Borings <br /> Three exploratory borings are proposed along the eastern boundary of the site in locations <br /> shown on Plate 2 for collection of soil and ground water samples The borings will be drilled <br /> using hollow stem auger drilling techniques Soil samples will be collected at 5-foot intervals to a <br /> total depth of 60 feet below grade (fbg), which is the historic ground water low based on San <br /> Joaquin County Flood Control District maps The boring proposed in the former tank area will <br /> be continuously cored <br /> A Cambria geologist will supervise the drilling and describe encountered soils using the Unified <br /> Soil Classification System (USCS) Selected soil samples will be properly sealed, labeled, and <br /> entered onto a chain-of-custody record for chemical and physical property analysis Samples <br /> will be selected for chemical analysis based on field screening with an organic vapor meter <br /> (OVM) Samples will be preserved in a cooler with ice for transport to a State of California <br /> certified laboratory <br /> Discreet ground water samples will be collected at 5-foot intervals from first encountered ground <br /> water to the total depth of the boring <br /> Task S Chemical Analysis <br /> Soil samples will be analyzed for Total Purgeable Petroleum Hydrocarbons (TPPH) according to <br /> EPA Method 8015 (modified), BTEX and methyl-tertiary-butyl-ether (MTBE) compounds <br /> according to EPA Method 8020, and oxygenates according to EPA Method 8260 <br /> Ground water samples will be analyzed for TPPH, TEPH, BTEX, MTBE, and oxygenates <br /> 375 3 <br />