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3. All plumbing penetrations into the containment will <br /> incorporate the use of 90 degrees baffles to prevent <br /> water transmission along the outside of the pipe. <br /> LS-1 1 Mixing: Each six-inch layer of compacted thickness shall be <br /> I mechanically mixed while incorporating the required amounts of <br /> water, soil stabilizer and seepage inhibitor. The desired goal is a <br /> ONwell mixed, uniform soil, water and emulsion mixture. The water <br /> and emulsion shall be applied by volumetrically controlled <br /> methods that will supply the correct quantity to produce a <br /> completed soil mixture. The quantities of soil stabilizer and <br /> seepage inhibitor to be used are to be recommended by the <br /> material manufacturer. The mixing should be accomplished by <br /> discing with an offset type disc sufficiently weighted to produce <br /> full mixing to a depth of six inches, or other mixing approved <br /> methods. Multiple passes in a criss-cross pattern will be <br /> required to incorporate the water, emulsions and soil into a <br /> uniform mixture. <br /> LS- 12 Spreading: Each successive membrane layer shall be spread on <br /> the subgrade of previous layer to the required thickness. <br /> Immediately prior to spreading the treated material, the subgrade <br /> or previous layer shall be moistened and kept moist but not <br /> excessively wet. Equipment for spreading the membrane shall be <br /> operated in such a manner as to produce a smooth uniform <br /> surface. <br /> LS- 13 Compaction: Each six-inch layer shall be compacted to at least <br /> 97F at plus or minus 29 of optimum moisture as determined by <br /> ASTM Method D-698A. The surface shall then be smoothed, and <br /> final compaction reached with a rubber tire or smooth steel <br /> wheeled vibratory roller. Final grade to be plus or minus one- <br /> tenth of a foot. Hand compaction will be necessary around all <br /> structures (i.e., pipes, pads, etc). <br /> 1. The membrane shall be kept moist with seepage <br /> inhibitor solution until membrane is flooded or covered <br /> with a protective layer of soil. <br /> 2. Membrane shall be kept moist until containment is filled <br /> LS- 3 <br />