PERMFILE136830

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 4/7/1994
• Doc Name: WEST PIT POND TR 25 AS BUILT SURVEY
• Section_Exhibit Name: Exhibit 7 Deleted by TR56 9/2/04
• Media Type: M
• Archive: Yes

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DO CONSTRUCTION CERTIFICATION
1, Douglas Steve Cowan, a Registered Prafesslonal Engineer in the State of
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Colorado, in accordance with 2 CCR 407 -2. Section 4.05.6(7). certify that the ,
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West Pit Pond Dom was inspected by mt daring construction. 1 certify that the
embankment and spillway were buiti In accordance with the submitted design
drawings..
Construction of this dam was begun on October 13, 1993 and was completed on +
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February 16, 1994. During constructlon, this dam was inspected daily to insure
compliance with prudent construction methods. Compaction was accomplished by
laying fill material in thin horizontal kryeirs and compacting with a front —end +
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loader and /or vibratory sheepsfoot roller. Modified Proctor densities were
determined by a qualified laboratory using methods outlined to ASTM procedure 4
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D698 -91 Method B Compacted density and moisture content of the placed fill ;
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material was monitored using a nuclear density probe in substantial accordance -
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with ASTM D2992 and D3017 to ensure adequate compaction.
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