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4-2 <br />Prior to grout injection, Uranine dye was injected in hole G-1 below the 73.2 <br />feet depth on July 28, 1982. Approximately 600 gallons of dye were injected <br />during a 36 minute period. No trace of the dye was ever found in recovered <br />drill core or in downstream seep areas. <br />Actual grout injections were conducted with the following grouting procedure: <br />o Packer grout rock in 5 foot intervals with cement <br />grout (using Portland Cement Type II) from the bottom <br />of the hole to bottom of casing. , <br />o Begin grouting with 4:1 mixture (4 parts water to 1 <br />part cement by volume), then use 3:1, 2:1 and 1:1 or <br />less until refusal. <br />x <br />o Pull casing in 2 to 5 foot increments and grout below <br />bottom of casing in stages up to, base of embankment <br />fill or to zones which took no grout, <br />o Withdraw casing and fill abandoned hole with grout. <br />t- <br />A program of chemical grout was initiated in G-5 at station 5+60 to test its <br />effectiveness. Celtlte 55-03 terraset chemical grout, a silicate based <br />chemical grout produced by Celtlte, Inc., of Cleveland, Ohio was used. The <br />chemical grout program is described in more detail in Section 4.2. <br />i <br />4.2 GROUT TAKES <br />Grout holes through the embankment ranged in depth from 116.5 feet (G-1) to <br />139.6 feet (G-5) below the crest. Throughout the entire grouting program, <br />1,488 bags of Portland cement were mixed and used which includes 51 bags to <br />' <br />fill up the holes after completion of the grouting. Total grout take in bags <br />of cement for each hole is as follows: <br />Boring Bags of Cement Used <br />G-1 126 <br />• G-2 173 <br />G-3 271 <br />