2011-06-30_REVISION - M1981302 ‎(14)‎

• Permit No: M1981302
• IBM Index Class Name: Revision
• Doc Date: 6/30/2011
• Doc Name: As-Built Drawings of Perimeter Levee- Apps. A,C,D & E.
• From: The Regents of Univ. of Colorado
• To: DRMS
• Type & Sequence: TR8
• Email Name: MAC
• Media Type: D
• Archive: No

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March 12, 2008
Flatiron Companies
and University of Colorado
P.O. Box 229
Boulder, Colorado 80305
Attention: Mr. Ed McDowell
Subject: Geotechnica! Engineering Consultation
University Levee (aka: Levee at Dee pe Farm Pit)
Boulder, Colorado
CTL I T Project No.: FC04266- 145 -L2
Flatiron Companies and
University of Colorado:
The University Levee (aka: Levee at Deepe Farm Pit) is a part of the flood
control system that is in place at certain locations along South Boulder Creek. The
undersigned discussed the Levee with Mr. Les Botham, PE, CCE of Leonard Rice
Engineers on February 12, 2008.
We learned the levee has been divided into three reaches for discussion. The
most upstream reach is where the 100 -year flood contacts the levee. Further, the
about 970 feet of the crest of this upstream reach that is just upstream of the location
where Dry Creek Ditch No. 2 falls away from the toe of the levee is slightly lower than
desired for freeboard reasons. The levee maintenance plan proposes to have an
average thickness of approximately one foot of compacted fill placed to restore the
crest to its desired elevation.
Leonard Rice Engineers has drawn and provided profiles and cross sections
for the reach in question. Left Hand Excavating is the earthwork contractor preferred
for the construction. Robert M. Sayre, Professional Land Surveyor, will provide the
construction staking and surveying at the end of construction to confirm the finished
width and elevation of the completed crest meet the project specification
requirements. CTL I Thompson, Inc. will provide the observation and testing during
construction to confirm the compacted fill placed is placed according to the project
specifications.
The profile along the centerline of the levee and the required configuration of
the completed crest are shown on Exhibit I attached. The requirements for placing
the compacted fill to be added to the levee are Exhibit II attached. "Density Tests"
during construction are referenced in Item 10, "Construction Staking and Finished
Grade Surveying" are referenced in Item 12, "Reporting of Field Density Tests" are
referenced in Item 15, "Confirmation Regarding Completed Fill" is referenced in Item
15, and "Confirmation Regarding Completed Grade Elevations" is referenced in Item
17 of the specifications.
351 Linden Street I Suite 140 I Fort Collins, Colorado 80524
Telephone: [phone] Fax: [phone]