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JLN 05 '97 07~32RM DIVihIINERRLS&GEOLOGY <br />•..: 01~t8. '00 00:48 ID:LANIEI~AX3800 <br />POWDEAHORNI <br />COAL COMPANY <br />June O, x997 <br />FAX <br />FHX~ <br />Mr. Larry Routten <br />Colorado Division of Mineralr and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 90203-2273 <br />RE: Outstanding Midterm Review Issues C-91-041 <br />Dear MY. Rautten: <br />P.2i4 <br />Pt]C~ 1 <br />-d. ~ YtlD <br />PYMO,, Calw~ 01610 . <br />(NO) ~OF7L71 <br />Fa'OI701 ~77n <br />Fer our conversation last week, i am sending a list of issues <br />that I stall have with the midterm review for our permit. These <br />issues are listed by numbers that have been carried through the <br />review process. The latest letter being responded to is a letter <br />from pan dated April 25, 1997. Many of the remaining requests in <br />this letter will be taken care Of. The following are the <br />questions that may need mitigation: <br />- 90. I have had non-discharging sumps and berme and other <br />drainage control structures in my permit for years. All of <br />a sudden I am asked how I will dewater one of them. I <br />offered to pump it to another pond once it had settled. It <br />would be a minor amount of wafer, it would be settled prior <br />to pumping and would be pumped at a non-critical period. I <br />donut believe that this scenario would affect the size of <br />the receiving pond. My current thought ie that all of my <br />alternate sediment control structures are or will be listed <br />in my Storm water permit and a statement to that affect <br />co::ld be included in out M&R permit. <br />96. Thies queetiori hag <br />The rRaponae that <br />issue of a person <br />evaluating work w <br />certain amount of <br />to do with headwater design of oulvert. <br />I have~had to my design brings up the <br />without professional certification <br />ith profeeeienal certification. There is a <br />logic and judgement that goes along with <br /> <br />