FLOOD09522

• County: Logan
• Community: Sterling, Atwood
• Basin: South Platte
• Title: Pawnee Creek Flood Mitigation, City of Sterling, Town of Atwood and Logan County
• Date: 7/1/1999
• Prepared For: Logan County
• Prepared By: URS Greiner Woodward Clyde
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

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SEcnONTHREE Affected Environments and Environmental Consequences

3.7.3 Alternative 3 - Pawnee Creek Overflow Cutoff

Noise impacts discussed for Alternative 2 above would also apply to Alternative 3, except that no
construction would occur at Atwood or along Pawnee Creek. Construction activities would be
restricted to daylight hours, and equipment would be equipped with proper mufflers to reduce
construction noise levels.

3.8 PUBLIC SERVICES AND UTILITIES

Public services in the project area include the following:

WaterlSanitary Sewer/Garbage
Natural Gas
Telephone
Electrical Power
Fiber Optics
Emergency Medical Services
Fire Protection
Law Enforcement/Civil Defense

City of Sterling
Colorado Public Service

U. S. West Communications
Colorado Public Service and Highline Electric
AT&T and MCI
Sterling Regional Medical Center
City of Sterling and Sterling Rural Fire District
Logan County and City of Sterling

The electrical and telephone utilities are located above ground in the rights-of way (ROW) of
Highway 6 and UPRR throughout the project area and along CR 24. Fiber optic lines are buried
in the ROW between Highway 6 and the UPRR track throughout the project area (L. O'Toole,
Project Manager, Colorado Department of Transportation, personal communication, 1999). By
law, before starting any construction activities contractors are required to call the Utility
Notification Center of Colorado (800-922-1987) and obtain information on utilities within the
construction area.

3.8.1 Alternative 1 - No Action

With the No Action Alternative, flooding along Pawnee Creek would continue to occur. Public
services and utilities could be disrupted during some flood events. In addition, the fiber optic
lines could be adversely affected if flooding resulted in a breach of the UPRR embankment.

3.8.2 Alternative 2 -Improve Routing of Pawnee Creek Flood Flows (Proposed
Action)

With Alternative 2, construction activities would affect fiber optic lines at Atwood. It would
also affect power, telephone, and fiber optic lines at the Highway 6 and UPRR bridge location
and at the Riverside Cemetery location. As previously stated, the contractor would call the

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