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s • <br /> April 13, 1983 <br /> Project 116-1.3 <br /> - 4 - <br /> During December, 1982, 100 cu. yds. of FMC waste and an estimated 600 <br /> gallons of leachate were placed in storage in an embankment enclosure on <br /> the north end of Group 1 Trench #2. The embankment surrounding the waste <br /> has successfully contained both the solid and liquid material. The <br /> prescribed analysis of the leachate is shown on Table 4 below. The sump <br /> pipes in Group 1 Trenches #1, #2 and #3 are checked monthly and were <br /> found to be dry. <br /> TABLE 4 - LEACHATE ANALYSIS (mg/1) <br /> North end of Trench 2 <br /> January February March <br /> Date 2/7/83 3/8/83 4/4/83 <br /> Volume (gals-est) 600 700 800 <br /> EC. (mmhos/cm) 10,786 9,738 11,519 <br /> TDs 8,090 7,304 8,639 <br /> Hardness (total) 453 198 535 <br /> pH 11.7 11.6 11.6 <br /> HCO-3 Nil 8.0 Nil <br /> Cl 60 1,630 1,630 <br /> Fe <0.05 <0.05 <0-05 <br /> CO3 552 352 368 <br /> As 0.01 0.01 0.01 <br /> SO4 364 372 408 <br /> _., Cr (total) 0.07 0.075 0.128 <br /> Cr+6 <0.025 <0.025 <0-025 <br /> Cr+3 0.07 0.075 0.128 <br /> Zn <0.01 <0.01 <0.01 <br /> Ni 0.19 0.30 0.65 <br /> Cd <0.001 <0.001 <0.001 <br /> GBetacAssociates - a <br />