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Kennedy/Jenks Consultants <br /> cover the top of the porous ceramic cup. From the top of the ceramic cup to the top of the <br /> sampler assembly, the borehole will be backfilled with pebble- and rock-free soil cuttings, <br /> tamping to ensure compaction. At the top of the lysimeter, a 6-inch to 1-foot bentonite plug <br /> using 3/8" bentonite chips will be installed to protect against channeling of water down the hole. <br /> The remainder of the hole will be backfilled from the top of the bentonite plug to ground surface <br /> using soil cuttings that are free of rocks and pebbles. Refer to Figure 9 of Appendix B for typical <br /> installation schematic. Note that Figure 9 of Appendix B has a bottom bentonite seal that is not <br /> proposed for this installation. <br /> The access tubes (pressure/vacuum and sample hoses)will be terminated in a concrete christy <br /> box, offset approximately 5 feet from the location of the borehole. Access tubes will run inside a <br /> conduit of SCH 40 PVC from the top of the lysimeter assembly to the christy box, where they <br /> will be terminated. One christy box will be used for each lysimeter. <br /> 6.2.4 Lysimeter Sampling <br /> After allowing the moisture from the lysimeter installation to equilibrate for a minimum of <br /> 48 hours, the lysimeter will be sampled following the manufacturer's recommendations. <br /> Following the initial sampling, the new lysimeters will be incorporated into Musco's routine <br /> semi-annual lysimeter sampling schedule. <br /> Work Plan for Improved Detection Monitoring Program Page 19 <br /> Musco Family Olive Company, Tracy, California <br /> ,w-g,.,Wm,oy.W Mom400_m..W.U9 . ftV.W_27 d.WI da .,Veport_text-09-26.doc <br />