C150187 Grant Request

• Contract/PO #: C150187
• Contractor Name: Young Creek Reservoir Company
• Contract Type: Loan
• Water District: 40
• County: Delta
• Loan Projects - Doc Type: Feasibility Study

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SMITH WILLIAMS CONSULTANTS, INC.
304 Inverness Way South • Suite 490 • Englewood, Colorado 80112 -5828
Phone: [phone] • Fax: [phone] • www.goswc.com
January 3, 2007
Mr. Jason Ward
Division of Water Resources
Department of Natural Resources
1540 East Niagara
Post Office Box 456
Montrose, Colorado 81402
Re: Young Creek Reservoir 1 -2 Rehabilitation
Construction and Maintenance Progress Report
Dear Mr. Ward:
Project 1007
In October of 2005, remediation activities were completed at the Young Creek Reservoir 1 -2
located in the Grand Mesa within Delta County, Colorado. This letter summarizes the completed
construction activities and resultant seepage monitoring through 2006. This letter was not issued
at the terminus of construction due to the fact that surveying could not be completed as a result
of inclement weather. Survey was completed in the fall of 2006.
As you know, Smith Williams issued a letter to your office in August of 2005 delineating the
seepage analysis results and remedial work to be completed on the Young Creek Reservoir. The
analysis was completed to assess the seepage conditions within the dam and underlying rock
foundation. Based upon the results, it was determined that the reservoir was not in eminent
danger and remediation activities could commence to repair surficial damage to the reservoir
impoundment and install a more rigorous seepage monitoring system.
Remediation activities completed include the following:
■ Stripping vegetation on the downstream toe of the reservoir to facilitate identification
of seepage outlet points
■ Channelizing the seepage to several low points where three 12 -inch deep, 90- degree
V -notch weirs were installed to monitor seepage collection outfalls as outlined in the
design report
■ Removing riprap on the dam face and groin areas to identify potential "sink holes"
■ Repairing existing "sink holes" on the left flank of the reservoir based upon the detail
submitted to your office by Knight Piesold and Company on October 10, 2001
The owner's representative Hans Reusch oversaw the construction activities, completed by
Pioneer Excavating, and verified that construction was completed in accordance with the design
specifications. Smith Williams was also on site periodically during construction to review the
SAPROJECTS \1007 - young creek \h5 - construction report\construction report 1 -3 -07 (f nal )2.doc