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HYDRO22500
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HYDRO22500
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Entry Properties
Last modified
8/24/2016 8:43:33 PM
Creation date
11/20/2007 3:03:04 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980003
IBM Index Class Name
Hydrology
Doc Date
1/14/1993
Doc Name
H-G COAL CO PN C-80-003 TR-060 FOUR SEDIMENT POND CERTIFICATIONS AND AS BUILT MAPS
From
H-G COAL CO
To
DMG
Permit Index Doc Type
PROF POND CERTIFICATIONS
Media Type
D
Archive
No
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CERTIFICATION <br />On January 12, 1993 I reviewed the as-built survey of the 001 <br />Explosives Storage Area Pond to determine its compliance with CMLRD <br />Rule 4.05.6(3)(d) requiring that this pond be fitted with two <br />separate spillways separated by an elevation difference of at least <br />one foot. <br />I am a registered Professional Engineer in the State of Colorado <br />and am experienced in the design and supervision of earthen <br />construction. I have reviewed the certified survey of this <br />structure performed by Peter Epp (Colorado P.L.S. No. 14815) on <br />December 22, 1992. I have also reviewed the previous as-built <br />certification by Jerry E. Snider (Colorado P.E. No. 17570) dated <br />April 14, 1986. In addition to the above, I have discussed the <br />modification made in 1992 with Juan. P. Garcia who supervised the <br />actual modification. This modification to bring this structure in <br />compliance with CMLRD Rule 4.05.6(3)(d) was to add a 6" CMP at an <br />elevation 1' below the original 18" CMP spillway. The 6" CMP is <br />now the primary spillway and the 18" CMP is now the emergency <br />spillway. <br />I hereby certify this modification as bringing this structure into <br />compliance with CMLRD Rule 4.05.6(3)(d). <br />_ ~i~/ <br />Robert G. Trumbly, Jr. <br />Colorado Y.E. No. 16957 <br />_/-~3-y <br />Date <br />
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