PERMFILE68454

• Permit No: C1981071
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 13 SEDCAD RUNS POND M
• Media Type: D
• Archive: No

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CERTIFICATION
I, MICHAEL W. LUDLOW, A REGISTERED PROFESSIONAL ENGINEER IN THE STATE OF
COLORADO, DO HEREBY CERTIFY THAT THE POND M 10 AND 25 YEAR RUN SEDCAD+
MODELING CALCULATIONS FOR CYPRUS YAMPA COAL COMPANY ARE TRUE AND
CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF BASED UPON MY INQUIRY OF
RICHARD MILLS.
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MICHAEL W. ~ O ;~a~a DATE
P.E. NO. 24046 °'~ 'P •'•••••• '~ ~* ~~~
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pppROVED rlnv z 1 187
TR 97-37
3/7/97