Condit Dam Removal Condit Dam Removal - Access Washington

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Condit Dam Hydroelectric Project Final Supplemental EIS Table 1-1 (Continued) Summary of Impacts and Mitigation Measures Impacts Mitigation Noise (Continued) • Noise reduction measures should be required during construction, including turning off idling equipment and using the quietest effective back up alarms • Blasting during weather conditions that could exacerbate the noise effects at nearby sensitive receptors should be avoided • Blasting will be managed by a blasting consultant to minimize noise effects. • Nearby sensitive receptors (e.g., residences) should be alerted of the impending blast noise by means of a warning horn or similar device • Blasting operations will not be performed within ¼ mile (1,320 feet) of an occupied dwelling on weekends, legal holidays, or between 8 pm and 8 am on other days Land Use/Critical Areas • Municipal water supply systems could be disrupted by dam removal activities. • Coordinate with the City of White Salmon to protect 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. • Provide temporary pipe to maintain the water supplied by the water line that crosses Northwestern Lake, and replace the line across the reservoir once the sediment has stabilized. • Changed land use opportunities after dam removal will require public See Public Safety below. safety measures Aesthetics and Scenic Resources • Bare sediment exposed on the reservoir slopes will adversely affect scenic resources. • The visual opportunities will be changed by removal of the reservoir, dam, and associated facilities. • Implement the revegetation plan on suitable substrate along the former shoreline and slopes. The revegetation efforts may take several years. The vegetation would be monitored over time. • New visual opportunities will develop. Construct new or enhance existing recreational facilities to facilitate enjoyment of new visual opportunities. Specifically, extend the boat launch at Northwestern Lake Park to access the river. 1-21
Condit Dam Hydroelectric Project Final Supplemental EIS Impacts • Various members of the public could be at risk during dam breaching and sediment stabilization activities. Table 1-1 (Continued) Summary of Impacts and Mitigation Measures Public Safety Mitigation • Implement the Public Safety Plan (PacifiCorp 2004). Key elements of the Public Safety Plan include: issuing a countywide (Klickitat and Skamania Counties) public notice prior to commencement of any major construction activities; and coordinating with local police and fire personnel for potentially hazardous areas and the schedule for blasting and dam breaching. • Standard construction safety practices include isolating the public and workers from direct exposure to hazards including tunnel-driving and dam removal operations. • Any blasting used as part of dam removal activities would be accomplished in areas isolated from the public as described in the Blasting Plan (PacifiCorp 2004). Key elements of the Blasting Plan include: blasting shall be performed only by trained and authorized personnel and in accordance with OSHA safety standards; and signs shall be posted to restrict public trespass within the vicinity of blasting activities. • Just before the final blast that breaches the dam is to be detonated, the White Salmon River would be cleared of people along its banks all the way from the dam to the mouth of the river. • At the same time, access to the river downstream from the Northwestern Lake Bridge would be prevented. This will prevent fishers, boaters, kayakers or other water sports enthusiasts from entering the river and being caught in hazardous waters, facilities, or sediments as the reservoir drains. • The general public would be barred from traversing the reservoir sediments or using the White Salmon River below Northwestern Lake Bridge until after the unstable sediments have been stabilized as described in the Sediment Assessment and Management and Bank Stabilization Plans prepared by PacifiCorp (2004). • Public notices will ensure that the general public is educated about public safety issues, including ones associated with new opportunities for access and recreation. They will also provide information about new conditions to be expected. 1-22
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Page 3 and 4: March 23, 2007 Dear interested part
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Appendix A Memorandum of Agreement
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Appendix C Supplemental Aquatic Res
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Agency and Organization Letters and
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Agency and Organization Letters Con
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Contents Public Meetings Response P
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Contents Individuals Individuals A-
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Condit Dam Removal Condit Dam Removal - Access Washington

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