Laserfiche WebLink
Mr Ronald Rowe <br /> August 17, 1999 <br /> CAM B R I A <br /> Health and Safety Plan <br /> A ,ite-specific Health and Safety Plan will be prepared for field work <br /> Utility Clearance <br /> Proposed drilling locations will be marked and their locations cleared through Underground <br /> Services Alert (USA) prior to drilling <br /> .Soil Borings <br /> We recommend drilling four soil borings at the site (Figure 1) Two of the borings will be at the <br /> probable hydrocarbon source areas (the former and existing tanks) and two of the borings will be <br /> down-gradient of the former tanks The two borings in the former and existing tank areas will be <br /> drilled to 80 ft depth (the depth indicated by the SJCPHS as the historic low water table during <br /> station operations) and continuously cored <br /> We will collect water samples using a driven grab sampler at ten foot intervals starting at the <br /> current water table This will allow us to profile hydrocarbon concentrations in groundwater <br /> beneath the site and determine whether the existing wells are providing representative data <br /> The two other borings will be drilled to approximately 50 ft and will also be continuously cored <br /> We will collect three water samples from these two borings at ten foot intervals starting at the <br /> current water table <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 will <br /> be selected for chemical analysts based on field screening with an organic vapor meter (OVM) <br /> Samples will be preserved in a cooler with ice for transport to a State of California certified <br /> laboratory <br /> Chemical Analysis <br /> Soil samples will be analyzed for TPHg, benzene, toluene, ethylbenzene and xylenes (BTEX), <br /> and MTBE Ground water samples will be analyzed for TPHg, BTEX and MTBE by EPA <br /> Method 8015/8020, and MTBE and other fuel oxygenates by EPA Method 8260 <br /> 6 <br />