WORK PLANS - Laserfiche WebLink

Home Browse Search

Mr. Michael J. Infurna Jr. December 9, 2005 Page 2 SCOPE OF WORK SECOR proposes the following scope of work to evaluate the former location for potential impacts: Task 1 Mark locations of known underground utilities and contact Underground Service Alert to mark various agency sub surface utilities. Prepare site specific health and safety plan. Task 2 Hand auger four borings to a depth of approximately five feet below ground surface (bgs). Collect up to two soil samples per boring at the approximate depths of two and five feet bgs. Analyze samples for total petroleum hydrocarbons as gasoline (TPHg), total extractable petroleum hydrocarbons quantified as diesel (TPHd) and as motor oil (TPHmo), benzene, toluene, ethylbenzene, and total xylenes (BTEX), and MTBE at a state-certified analytical laboratory. Task 3 Prepare a summary report which will include sampling methods and handling procedures, a table of results, analytical lab reports, a map of final soil sample locations, a discussion of the results, and conclusions and recommendations. FIELD INVESTIGATION Following clearance of subsurface utilities, the four borings will be hand augered to depths of five feet bgs with a clean hand auger, which will be decontaminated between boring locations. Auger cuttings and decon-fluids will be containerized in DOT-rated drums and retained onsite for appropriate disposal based on analytical results. Discrete in-place soil samples will be collected in new brass sample sleeves with a clean impact sampler at the depths of two and five feet bgs. The samples will be field screened with a photoionizing detector (PID) and recorded on field forms. The samples sleeves will be immediately covered with Teflon sheets and plastic end caps, labeled, recorded on a chain-of-custody form, and placed into a cooler with ice for transport under chain of custody protocol to a state-certified analytical laboratory. A minimum of one selected sample per boring will be analyzed in accordance with the following analytical program: • TPHg, BTEX, and MTBE with U.S. Environmental Protection Agency (EPA) Methods 8015M/8020, and r . TPHd and TPHmo with EPA Method 8015M. 1`•i The results of the investigation will be summarized in a brief letter report including a tabular listing of sample identification numbers and sample depths, analytical data and PID readings, copies of the laboratory analytical reports and chain of custody forms, and a map of the actual sample locations. The report will describe the sampling methods utilized, the f sample handling procedures, and a narrative describing the sample results. The report will lAPG&E\PM\work plan PZ Il.doc I