HYDRO21896

• Permit No: C1982056
• IBM Index Class Name: Hydrology
• Doc Date: 1/30/2001
• Doc Name: 4th QTR 2000 DMR SUBMITTAL
• From: TWENTYMILE COAL CO
• To: WQCD
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

HARDNESS PARAMETERS BEING TESTED FOR IN-HOUSE CLARIFICATION
Outfall Hardness (mglL)
10/5/00 11 /2/00 12/7/00
001 2126 2181 2190
All testing is being conducted through CTBE Laboratories in Denver, Colorado.
The Hardness value is a calculated result based on dissolved Calcium and Magnesium.