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• Kennedy/Jenks Consultants <br /> i <br /> I <br /> 6. Collect soil samples for lithologic logging purposes with a CME continuous coring system in <br /> 5-foot increments. <br /> 7. Collect soil samples for lithologic logging and chemical and physical analyses by driving a split- <br /> spoon drive sampler, in 2.5-to 5-foot increments, below the depth of the auger bit with a <br /> rig-mounted hammer. Record the standard penetration resistance. If the sample is pushed <br /> rather than driven, be sure to record the push force. <br /> I <br /> 8. Have the soils classified in the field in approximate accordance with the visual-manual <br /> procedure of the Unified Soil Classification System (ASTM D-2488-90) and the Munsell Color <br /> Classification. <br /> 9. Prior to each sampling event, wash the split-spoon drive sampler and brass liners with high <br /> purity phosphate-free soap, and rinse them with potable water. <br /> 10. At each sampling interval, collect soil in one brass liner for potential laboratory analysis. Cover <br /> this sample in Teflon sheets, seal it with plastic caps, and wrap it with silicon tape. Place a <br /> completed sample label on the brass liner. Then see that the samples are placed in appropriate <br /> containers and stored at approximately 4°C. <br /> 11. Complete chain-of-custody forms in the field and transport the samples in insulated containers, <br /> at an internal temperature of approximately 4 °C, to the selected laboratory. <br /> 1.4 Installation and Testing of Isolation Casing <br /> 1. Upon completion of the initial small-diameter boring, use a rotary drill bit of appropriate diameter <br /> to ream the boring to a depth (to be determined). Use a bentonite mud mixture, in accordance <br /> with standard drilling practice, to maintain hole stability and to minimize infiltration and <br /> development of a mud cake on the borehole wall. <br /> 2. When reaming is completed, install isolation casing in the boring. Use conductor casing of an <br /> appropriate grade of 14-inch diameter steel with a wall thickness of 0.25 inch, per the following <br /> specifications: <br /> a. Sections are 20, 10, or'5 feet in length. <br /> b. Casing sections are beveled or butt-jointed. <br /> c. Field joints are arc-welded with 70 percent weld penetration, having a minimum of two <br /> passes per circumference. <br /> d. Welding rod is compatible with casing material. <br /> e. Joints are watertight. <br /> f. Casing centralizers are set on the bottom, middle, and top of the total casing length. <br /> Centralizers are installed in sets of four, spaced at 900, and attached at the bottom by a tack <br /> weld. They are flanged 2 inches at the top and bottom to contact the borehole wall. <br /> , <br /> Monitoring Well Installation Work Plan SOG 1 <br /> Page 2 <br /> Delicato Family Vineyards, Manteca, California <br /> i <br /> g.Usyrouabtlmin�pb107R1765007.�deFc+ro10&MiM+v,bM xAW%Wr i=av:ukufhA mv.doc <br />