Laserfiche WebLink
• SECOR _ --- . <br /> Mrs. Kristi Shelton <br /> April 17, 2008 <br /> Page 4 <br /> WORK PLAN FOR CONFIRMATION SOIL BORINGS <br /> To determine soil impacts beneath the site, the proposed scope of work includes the installation <br /> of confirmation borings adjacent to U-1, U-2, U-5, U-c, and T-11 as indicated on Pacific <br /> Environmental Group, Inc. soil concentration map (Figure 2). A detailed description of the <br /> proposed work is summarized below: <br /> Health and Safety Plan. As required by the Occupational Safety and Health Administration <br /> (OSHA) Standard "Hazardous Waste Operations and Emergency Response' guidelines (29 <br /> CFR 1910.120), and by California Occupational Safety and Health Administration (Cal-OSHA) <br /> "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8, Section <br /> 5192), SECOR will prepare a site-specific Health and Safety Plan (HASP) prior to the <br /> commencement of fieldwork. The site-specific HASP will be reviewed by field staff and <br /> contractors before beginning field operations at the site. <br /> Permitting. Permits for the advancement of the soil borings will be obtained from San Joaquin <br /> County prior to beginning work. <br /> Utility Clearance. Prior to installation of the soil borings at this location, the presence of utilities <br /> in the area of the proposed borings will be evaluated by marking the location of the boring in <br /> white paint or other method, and clearing the area through Underground Service Alert (USA). <br /> Additionally, SECOR will hire a private utility locator to evaluate the proposed boring location for <br /> possible underground utilities. <br /> Soil Borings. SECOR personnel will install five confirmation borings adjacent to U-1, U-2, U-5, <br /> U-C, and T-11 as indicated on Pacific Environmental Group, Inc.'s Soil Concentration Map - <br /> Figure 3 included in the Figures section. These borings will be hand augured to a depth of five <br /> feet bgs and the first sample will be taken at this interval. The boring will then be advanced to <br /> just above the water table and a second sample will be taken at this interval. Depth to water at <br /> this site during the last monitoring event (First Quarter 2007) ranged from 8.14 to 9.51 feet. <br /> Soil Sample Collection and Analysis. Soil samples for chemical analysis will be collected at <br /> the 5 foot interval and directly above the water table. Samples submitted for chemical analysis <br /> will be sent under chain-of-custody documentation to a California state-certified laboratory. At <br /> least two samples per boring will be analyzed for TPHd, TPHg, BTEX, fuel oxygenates MtBE, <br /> DIPE, TAME, EtBE, TBA, 1, 2-DCA, EDB, and ethanol by EPA Method 8260B. <br /> Soil Disposal. Soil cuttings generated during boring installation activities will temporarily be <br /> stored in California DOT approved 55-gallon steel drums on-site pending characterization and <br /> disposal. The drums containing soil will be removed by Belshire and transported for proper <br /> disposal. <br /> Report. Following the completion of boring installation, SECOR will submit a report <br /> documenting the findings. The report will include soil boring logs, soil analytical results, chain- <br /> of-custody documentation, conclusions, and recommendations for future work if needed. <br /> SECOR International incorporated <br />