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Kennedy/Jenks Consultants 6. Collect soil samples for lithologic logging purposes with a CME continuous coring system in 5-foot increments. 7. Collect soil samples for lithologic logging and chemical and physical analyses by driving a split- spoon drive sampler, in 2.5- to 5-foot increments, below the depth of the auger bit with a rig-mounted hammer. Record the standard penetration resistance. If the sample is pushed rather than driven, be sure to record the push force. 8. Have the soils classified in the field in approximate accordance with the visual-manual procedure of the Unified Soil Classification System (ASTM D-2488-90) and the Munsell Color Classification. 9. Prior to each sampling event, wash the split-spoon drive sampler and brass liners with high purity phosphate-free soap, and rinse them with potable water. 10. At each sampling interval, collect soil in one brass liner for potential laboratory analysis. Cover this sample in Teflon sheets, seal it with plastic caps, and wrap it with silicon tape. Place a completed sample label on the brass liner. Then see that the samples are placed in appropriate containers and stored at approximately 4°C. 11. Complete chain-of-custody forms in the field and transport the samples in insulated containers, at an internal temperature of approximately 4 °C, to the selected laboratory. 1.4 Installation and Testing of Isolation Casing 1. Upon completion of the initial small-diameter boring, use a rotary drill bit of appropriate diameter to ream the boring to a depth (to be determined). Use a bentonite mud mixture, in accordance with standard drilling practice, to maintain hole stability and to minimize infiltration and development of a mud cake on the borehole wall. 2. When reaming is completed, install isolation casing in the boring. Use conductor casing of an appropriate grade of 14-inch diameter steel with a wall thickness of 0.25 inch, per the following specifications: a. Sections are 20, 10, or 5 feet in length. b. Casing sections are beveled or butt-jointed. c. Field joints are arc-welded with 70 percent weld penetration, having a minimum of two passes per circumference. d. Welding rod is compatible with casing material. e. Joints are watertight. f. Casing centralizers are set on the bottom, middle, and top of the total casing length. Centralizers are installed in sets of four, spaced at 900, and attached at the bottom by a tack _ weld. They are flanged 2 inches at the top and bottom to contact the borehole wall. Groundwater Protection Work Plan, The Wine Group SOG 1 Franzia Winery, Ripon, California 2 yusy�o�,c�,ycmwro3oizo.m_»i�mauaw%��coisWm�rm�mcesmisuw�•isouarc.aoc