CORRESPONDENCE_2002-2010 - Laserfiche WebLink

Home Browse Search

■ Plastic end caps for acetate tubing ■ Mailing labels and markers ■ Chain of custody forms and custody seals ■ Cooler and ice or blue ice ® Packing and duct tape ■ Decontamination equipment (2 Y2 -gallon sprayer, non -phosphate detergent, disposable brush, paper towels, cotton towels, polyethylene sheeting) Burn -ash and soil samples will be collected using direct push equipment. At each sample location direct -push equipment will be used to drive the sampling tool through the cover and waste into native soil beneath the fill. Subsurface waste and soil samples will be collected by visually identifying debris through the clear acetate liner of the sampling tool and cutting out a six-inch section and capping the ends with plastic cap plugs. Upon completion of sampling at a location the hole will be screened using a GMI 422 Gas Surveyor and a measurement taken for CH4, CO2, H2S, CO and 02. The hole will then be filled with native soil and bentonite. After each sample is collected it will be placed in a laboratory -supplied container, labeled, logged on the chain -of -custody document, screened for radioactivity, sealed, and stored in an ice chest that is cooled to 4 degrees Fahrenheit. The coolers will be shipped to ExcelChem via overnight Federal Express shipment. 3.4. Sample Locations Although sampling locations are proposed in Figure 6, exact soil sampling locations will be determined in the field based on accessibility, the presence of unforeseen impedances or other factors. Final soil sample locations will be recorded in the field logbook and staked in the field when sampling is completed. A survey crew will locate each sampling location on the final site map. The map will be provided in a final site investigation and sampling and analysis report. All equipment that comes into contact with potentially contaminated soil/burn ash will be decontaminated in a predesignated area. Disposable equipment intended for one-time use will not be decontaminated, but will be packaged for appropriate disposal. Decontamination will occur prior to and after each use of a piece of equipment. All sampling devices used, including trowels and augers, will be decontaminated by CIWMB staff. The following decontamination procedures for primary contaminant, inorganic (metals): 1. Non -phosphate detergent and tap -water (bottled water) wash, using a brush if necessary 2. Tap -water rinse 3. 0.1 N nitric acid rinse 4. Deionized/distilled water rinse 2x CIWMB 16