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deep. One of the piezometers, shown as P-5 on the enclosed <br />sketch, will be sealed at about eight feet so it measures only <br />water in the coal waste material. The other piezometer, shown as <br />P-6 on the enclosed sketch, will be perforated nearly its entire <br />length so it measures all free water in the fill. <br />SCHSDULB <br />The best time to perform the bench repair work is during Septem- <br />ber and October. Delaying the work until late in the year will <br />allow the slump area to dry as much as possible. The delay will <br />also allow the seeding and mulching of the newly disturbed area <br />to be performed soon after the regrading work is completed. <br />Blue Ribbon proposes to perform the repair work in September and <br />October with the regrading work competed not later than the end <br />of October. Seeding and mulching of the area will be done in <br />late October or early November. <br />4 <br />