Condit Dam Removal Condit Dam Removal - Access Washington

Condit Dam Hydroelectric Project
Final Supplemental EIS
staging areas also would be used for a temporary office trailer, equipment parts and supplies
storage, equipment and vehicle parking, equipment fueling, and an explosives magazine.
Staging areas include sites adjacent to Powerhouse Road next to the dam. SA-2 is occupied
by a private residence (which would have to be purchased) and SA-1 is occupied by a shed
owned by PacifiCorp. Disposal areas (e.g., SA-3 and SA-5) may temporarily double as
staging areas. Additional small flat areas adjacent to access roads would also be used as
staging areas (for example, SA-4 adjacent to the flowline to be removed). At the primary
sites, preparation would include removal of existing buildings, some grading, and laying an
all-weather surface with gravel. Smaller sites would require clearing of vegetation, grading,
and gravelling.
The concrete to be removed from the dam and surge tank would either be recycled or buried
and covered on SA-3, the 8-acre site a few thousand feet upstream of the dam and owned by
PacifiCorp. About 7 acres of SA-3 would be available for use, as the site is subject to City of
White Salmon well-setback limitations for the water supply well located at the eastern end of
the parcel. The 2 to 3 acres nearest to the lake are proposed for temporary storage or
permanent disposal. This section would need to be cleared of forest vegetation. Topsoil
would be removed and stockpiled, probably between the disposal location and an adjacent
residence. Some additional redistribution of earth would likely be necessary to facilitate
disposal and covering of the concrete. When work on this parcel is complete, the area would
be graded to naturally drain to the west (as before) and the entire site would be revegetated.
Concrete recycling, the preferred disposal method, would occur at a site not yet identified
that is assumed to have the following characteristics. The recycling site would be
independent of the Condit project and would have or would acquire its own permits. For
analysis purposes, the site is assumed to be within 30 miles of Condit Dam and would require
hauling the concrete on SR 14 and SR 141. Any concrete crushing would occur at the
recycling site.
A temporary disposal/storage area for the wood from the wood-stave flowline and penstock
would be established on property owned by the Becker family located a few hundred feet
east of the flowline (SA-5). The site is a grass field that may be used as is or graded to
accommodate stacking the treated lumber staves and loading them onto trucks to go to the
recycling site. The driveway (AR-13) would require upgrading to accommodate truck traffic.
The wood may go to a facility to be remilled for use in other wood-stave pipelines or
remilled as lumber. The steel from the flowline hoops and other facility components may be
temporarily stored at the Becker site or staging locations before it is hauled away for
recycling.
At the conclusion of the proposed action, all temporarily disturbed areas, including the
staging areas, would be regraded and revegetated consistent with the proponent’s
revegetation plan.
3.1.2 Access Roads
Access roads throughout the project area are necessary to perform the removal operations
defined by the Settlement Agreement and the associated reclamation and monitoring
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