BEAVERHEAD-DEERLODGE NF Klatt Dam Breach

Z- Klatt Dam Breach on the Madiosn Ranger District of the Beaverhead-Deerlodge National Forest
Project Location: Klatt Dam (also known as Kelly Reservoir) is located in the Wall Creek drainage in the Gravelly Range Mountains approximately 27 air miles south of Ennis, MT; longitude 111d 45.920' W, latitude 44d 57.774' N; T10S, R1W, S18.

Scope of Contract: This project is to breach the Klatt Dam (also known as Kelly Reservoir). The dam is an earthen dam located in the Gravelly Range Mountains. The dam has been abandoned since 1982. The dam has a height of 21 feet and has an 18-inch diameter CMP outlet pipe 134 feet in length. The breach will create a notch in the dam embankment the full height of the dam. In the tentative design, the bottom of the notch will be at the invert of the outlet pipe and will create a 12 foot wide channel. The side slopes of the channel will be at a 2 H: 1 V slope. Excavated material would be disposed by spreading on-site adjacent to the dam. Erosion control measures and disposal of the CMP outlet pipe will be included in the contract.  
There is currently natural dead pool storage upstream of the dam. This natural impoundment will be maintained. On-site rock will be placed, as necessary, to prevent head cutting of the new channel.

Prebid Tour: No tour is scheduled, however, Prospective Offerors are strongly encouraged to inspect the project site to satisfy themselves regarding conditions that may affect the cost of contract performance and access.

Access to the Project Site for Pre-Bid Purposes: Klatt dam is accessed by FS Road #933, then North Fork Wall Creek Trail #6027, then Kelly Reservoir Trail #6418. Area travel restrictions prohibit motorized use on trails #6027 and #6418 from September 10 to May 15. FS Road #933 is closed to motorized use from December 2 to May 15. Prospective Offerors shall comply with current Beaverhead-Deerlodge NF travel management regulations.

Access to the Project Site During Construction: After award of the contract, the successful Offeror will be given authorization to access the site with motorized equipment via trails #6027 and #6418 as follows: a single trip in and out at the beginning and end of the project with up to two pieces of heavy equipment; the track width of the equipment shall not exceed 10 feet; a single daily trip in and out each day that work is being performed by an ATV/UTV; ATV/UTV width shall not exceed 60 inches.

All logs, debris, and rocks moved to allow access shall be placed back while exiting the project to return the trail tread to its current width. All constructed features such as water bars or drain dips that are damaged shall be returned to their current condition.
Construction Magnitude: Less than $25,000

Anticipated Bidding Period: It is anticipated that quotes will be solicited for this project in February and/or March, 2017.

Anticipated Period of Performance: It is anticipated that the period of performance will be between May 15 and September 1, 2017.