1997-04-24_REVISION - M1977493 (17)

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TABLE 4 Comparison of Total Metals to Leachable Metals Eagle Park Reservoir Bottom Material Analytical Results Sampling Event: November 6, 1996 Adjusted pH Final pH Percent Cr Percent Cu Percent Mn Sample of Original after Total Cr Leached Cr Leached Total Cu Leached Cu Leached Total Mn Leached Mn Leached ID Lixiviant Mixing (mg/kg) (mg/L) (mg/kg) (mg/kg) (mg/L) (mg/kg) (mg/kg) (mg/L) (mg/kg) ST-02 7.90 *** 15.0 0.004 B 0.03 29.0 0.050 B 0.17 304 1.470 0.48 ST-04 7.60 6.0 _ 18.0 0.005 B 0.03 51.0 0.060 0.12 _ 176 16.700 9.49 ST-05 7.60 7.0 20.0 0.004 B 0.02 29.0 0.050 B 0.17 144 1.940 ND ST- 11 7.50 6.6 _ 16.0 0.014 B 0.09 25.0 0.050 B _ 0.20 140 6.190 ND ST- 14 7.50 7.0 11.0 0.015 B 0.14 16.0 0.040 B 0.25 325 6.960 ND ST- 14a 7.90 7.0 13.0 0.015 B 0.12 21.0 0.050 B 0.24 444 7.280 1.64 ST- 15 _ 7.90 6.9 12.0 0.015 B 0.13 _ 20.0 0.060 0.30 186 8.240 4.43 _ ST- 15a 7.90 6.8 12.0 0.016 B 0.13 21.0 _0.070 0.33 _ 176 7.920 4.50 _ ST- 16___ 7.90 6.8 8.0 0.018 B _ 0.23 9.0 0.005 U _ ND 84.4 0.110 0.13 _ ST- 17 8.00 ___7.0____ 13.0 _ 0.017 B _ 0.13 22.0 0.050 _ 0.23 _214 1.110 ND _ ST- 19 8.00 6.9 14.0 0.017 B 0.12 _ 48.0 0.050 B 0.10 82.9 0.760 0.92 ST-24 8.00 1 6.8 9.0 1 0.016 B 0.18 1 15.0 1 0.050 1 0.33 1 66.2 1 0.520 1 0.79 Noteso Cr=Chromium; Cu=Copper; Mn=Manganese ND=Not Detected. Percent of metal leached was not calculated for non-detects in leachate. *** =Final pH was not taken due to laboratory error. U=Analyte was not detected at the method detection limit(MDL). Value presented for statistical purposes is the MDL divided by two.. B=Analyte concentration detected at a value between the MDL and practical quantitation limit(PQL). D:\PROJECTS\6102,001\RES BOT3.XLS[12/18/96] _ Page I of I