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HYDRO27550
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HYDRO27550
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Entry Properties
Last modified
8/24/2016 8:46:58 PM
Creation date
11/20/2007 8:08:07 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981024
IBM Index Class Name
Hydrology
Doc Date
8/6/1991
Doc Name
CERTIFICATAION OF SEDIMENTATION POND 3 COLO COAL MINE 1 C-81-024
From
MLRD
To
KAISER STEEL RESOURCES
Permit Index Doc Type
PROF POND CERTIFICATIONS
Media Type
D
Archive
No
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~ --- _ _ <br />~~~ 1~~'~~I~~I'I~I~' <br />STATE OF COLORADO <br />MINED LAND RECLAMATION DIVISION of ~o~ <br />Department of Natural Resources a`~ ,4> <br />1313 Sherman St.. Room 215 "~e <br />Denver, CO 80203 ~ C ~ G ~ <br />303 866-3567 • • rY„~ 6 • • <br />FA x: 303 832-8106 <br />Roy Romer. <br />Governor <br />Fretl R. 8ania. <br />Divivon Director <br />August 6, 1991 <br />Kaiser Steel Resources <br />c/o Mr. Mike Keegan <br />Star Route No. 3 <br />P.O. Box 52A <br />Pagosa Springs, Colorado 81147 <br />SUBJECT: Certification of Sedimentation Pond No. 3 <br />Colorado Coal Mine No. 1, C-81-024 <br />Dear Mr. Keegan: <br />I have been assigned the responsibility of lead specialist for the CCMC No. 1 <br />Mine. I am a hydrologist and have worked in the coal section of the Division <br />for the last five years. <br />I inspected CCMC No. 1 both in June, 1991 and July, 1991. During both <br />inspections, the primary focus was the sediment control system. I was aware <br />that the location of the primary and secondary spillways on Pond B were out of <br />compliance with the design last spring, and that Mike Kolin had recertified <br />the pond in early May, 1991 following some remediation work. <br />I find the certification wanting. Construction of the Pond B embankment <br />apparently proceeded with little reference to the design. Consequently, <br />it is the certifying engineer's responsibility to prove that the as-built <br />configuration can handle the anticipated flows. Mr. Kolin appears to have <br />verified what was constructed, but he has not noted that his observations <br />differ dramatically from the design. I am enclosing a copy of our guidelines <br />for certification for your use and the use of your consulting engineer. <br />Please revise the certification and prove that the pond and the ditch between <br />Ponds A & B can handle the flows in a non-erosive manner. Please document the <br />sizing, depth and installation of the rip-rap. I am also concerned that the <br />outfall of Pond A will also not handle the flow where it currently goosenecks <br />to flow west and then south. Please check that area, too. <br />
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