REP32481

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: TABLE 46A CYPRUS YAMPA VALLEY COAL CORP SUMMARY OF WATER QUALITY DATA
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

TABLE 47A
CYPRUS YANPA VALLEY COAL CORP
SUMMARY OF HATER OUALITT DATA
STATION NUMBER: 69 --- TROUT CREEK BELOW MIDDLE (69)
Average Std Maximum Mininxm Units Count Period
ANIONS
BICARBONATE AS HC03 169.516 47.9 363.560 14.640 MG/L 163 10/80 - 09/96
CARBONATE AS L03 14.359 15.5 86.400 -2.000 MG/L 58 10/80 - 09/96
HYDRO%IDE AS OH -1.778 0.7 0.000 -2.000 MG/L 9 09/94 - 09/96
CHLORIDE NOT APPLICABLE 2.426 3.2 12.000 •3.000 MG/L 129 10/80 - 04/93
SULFATE NOT APPLICABLE 219.685 143.4 704.000 7.000 MG/L 168 10/80 - 09/96
MINOR
FLUORIDE NOT APPLICABLE -0.202 0.3 0.100 -0.500 MG/L 6 10/80 - 04/83
PRIMARY
ARSENIC TOTAL -1.700 3.4 7.000 -5.000 UG/L 10 10/80 - 04/85
BARIUM TOTAL -266.667 57.7 -200.000 -300.000 UG/L 3 10/80 - 10/81
CADMIUM TOTAL -4.900 14.9 21.000 -20.000 UG/L 10 10/80 - 04/85
TOTAL RECOV -0.400 1.0 0.600 -5.000 UG/L 32 06/87 - 09/96
LEAD TOTAL -38.000 136.1 200.000 -200.000 UG/L 10 10/80 - 04/85
MERCURY TOTAL -0.827 1.6 2.000 -5.000 UG/L 11 10/80 - 04/85
TOTAL RECOV -0.138 0.1 0.200 -0.200 UG/L 32 06/87 - 09/96
SELENIUM TOTAL -1.900 2.2 3.000 -5.000 UG/L 10 10/80 - 04/85
TOTAL RECOV -0.813 0.8 3.000 -1.000 UG/L 32 06/87 - 09/96
SILVER TOTAL RECOV -2.000 8.8 0.100 -50.000 UG/L 32 06/87 - 09/96

Report Date: 27-FEB-97 Page: 2 of 3
Report NaaK: NOA020R