November 13, 2019: The Low Impact Hydropower Institute has received a complete application for Low Impact Certification of the American Tissue Hydroelectric Project.  LIHI is seeking public comment on this application.  Specifically, we are interested in knowing whether you think the Project meets the LIHI Low Impact Certification Criteria, as revised in the 2nd Edition Handbook.  Please review the program and criteria in LIHI’s revised Handbook and then review the Project’s application materials below.

Comments that are directly tied to specific LIHI criteria (flows, water quality, fish passage, etc.) will be most helpful, but all comments will be considered.  Comments may be submitted to the Institute by e-mail at comments@lowimpacthydro.org with “American Tissue Project Comments” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 329 Massachusetts Avenue, Suite 6, Lexington, MA 02420.  Comments must be received on or before 5 pm Eastern time on January 12, 2020 to be considered.  All comments will be posted to the web site and the applicant will have an opportunity to respond.  Any response will also be posted.

Project Description:

The American Tissue Hydroelectric Project (Project) is located in Kennebec County in southwestern Maine in the town of Gardiner. The Project is located on the Cobbosseecontee Stream, approximately 1 river mile upstream of its confluence with the Kennebec River. The Cobbosseecontee Stream is approximately 11 miles long from its headwaters at Cobbosseecontee Lake. There are five dams on Cobbosseecontee Stream. The Project’s dam is the second-most upstream dam on Cobbosseecontee Stream and is the only dam on the stream that is used for hydroelectric generation.

The Project was recently relicensed by the Federal Energy Regulatory Commission (FERC) (FERC No. 2809) on April 30, 2019 for a 40-year license expiring May 1, 2059.

Dam and downstream fish passage

Bypassed Reach looking downstream

Project Name American Tissue
Owner KEI (Maine) Power Management (III) LLC
State Maine
Location River Mile 1 on Cobbosseecontee Stream
Installed Capacity 1.0 MW
Average Annual Generation 5,430 MWh
Facility Type Run of river
FERC No. 2809

The Project dam was constructed in 1900 and operated as a run-of-river water power facility until 1970, when the powerhouse was destroyed by fire. The remaining dam, penstock, and reservoir were redeveloped which included repairs to the damaged gates, intake and headworks, and a new powerhouse at the site of the old powerhouse. Construction was completed by 1983.

Current Project works include a cut granite, stone masonry, gravity dam with spillway, east and west abutments, an underground steel penstock, a powerhouse containing one turbine generator unit with a total rated capacity of 1.0 MW, a tailrace, a 250-foot-long 12-kilovolt (kV) transmission line with a 4/12 kV step up transformer, and appurtenant facilities. The Project boundary generally includes the impoundment, dam, headrace, powerhouse, and tailrace.

 

 

The American Tissue Project operates as a run-of-river facility with a continuous minimum flow of 10 cfs, or inflow, whichever is less, to the bypass reach; and a flow of 29 cfs released into the bypass reach between June 1 and November 30.

Files: