Condit Dam Removal Condit Dam Removal - Access Washington

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Condit Dam Hydroelectric Project Final Supplemental EIS Critical Areas and Shoreline Master Programs Some of the proposed work would occur near or affect Klickitat County Critical Areas or buffers. Along the reservoir, small wetlands are situated along the north and west shoreline in Skamania County between Buck Creek and Mill Creek and near the confluence of Little Buck and Spring Creeks and the reservoir (See Section 4.4). On the south and east sides of the shoreline in Klickitat County there are wetlands upstream of the dam. Other small wetland areas exist downstream of the dam (see Section 4.4). Work would occur near or along the shoreline at various locations along the reservoir and near the White Salmon River downstream from the site. In addition, work at the delta of Mill Creek and at sediment access points and the water pipeline crossing on the north and west shorelines may affect Skamania County Critical Areas or buffers. Sediment that will be deposited at the mouth of the White Salmon River may change flood elevations. No structures in either county are expected to be affected. Post-Removal Management Once the dam has been removed and because of the changed conditions, both counties would need to review land use designations along the former reservoir. In addition, critical areas designations and the Shoreline Management Program would need to be reviewed and perhaps revised. This would result in the redefinition of floodplains and floodplain map revisions under the Federal Emergency Management Agency (FEMA) National Flood Insurance Program (44 CFR, Part 60). 4.9.3 Mitigation Measures PacifiCorp has prepared several plans and proposed construction BMPs to address impacts from the proposed action. Some measures to address impacts to land use and critical areas include: • Protect City of White Salmon Well No. 2 by not conducting work within the well setback area. Provide protection measures around the disposal site to prevent potential long term leaching. • Align access roads to avoid wetlands and minimize impacts to critical area buffers, including well setback (wellhead protection) areas. • Revegetate disturbed areas after construction. • Regrade exposed areas and other bank stabilization measures after construction as part of the Sediment Assessment and Management and Bank Stabilization Plans (PacifiCorp 2004). • Implement the Canyon and Woody Debris Management Plan (PacifiCorp 2004). • Implement the temporary erosion and stormwater control plan during construction. 4.9-4
Condit Dam Hydroelectric Project Final Supplemental EIS 4.9.4 Significant Unavoidable Adverse Impacts If the PacifiCorp Sediment Assessment and Management, Bank Stabilization, and Canyon and Woody Debris Management Plans and other mitigation measures are implemented, no long-term unavoidable significant adverse impacts to land use/critical areas are anticipated. There would be short-term significant unavoidable adverse impacts to sites along or near the reservoir that would be used for work areas, construction staging or for disposal, and from the access roads that would be built in several locations. 4.9-5
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Condit Dam Removal Final SEPA Suppl
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March 23, 2007 Dear interested part
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Condit Dam Hydroelectric Project Fi
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Agency and Organization Letters and
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Contents Public Meetings Response P
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Contents Individuals Individuals A-
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