Condit Dam Removal Condit Dam Removal - Access Washington

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Condit Dam Hydroelectric Project Final Supplemental EIS Current zoning by Skamania County (on the west side of reservoir) includes Residential (R2 and R5), along the reservoir shoreline to an area just north of the Condit Dam; Open Space (OS) from the reservoir just north of the dam and along the White Salmon River to the Underwood site; Forest (F-3) along the higher west slopes of the White Salmon River; and Agriculture (AG-1 and AG-2), also along the higher west slopes of the White Salmon River. As noted above for Klickitat County, there are uses permitted outright as well as accessory uses for the zoning classifications. In addition, there are conditional uses allowed, subject to a conditional use permit. The Comprehensive Plan designations include Rural 2 and Conservancy, extending along the west side of the reservoir from the Northwestern Lake Bridge to the Underwood site. These designations also are intended to serve as a guide to the development of the County goals and policies. Skamania County also has development regulations as part of a special management area for the Columbia River Gorge National Scenic Area. The intent of these regulations also is to protect water resources. Zoning classifications include sections requiring conditional use permits for activities that are not a preferred land use within a zone classification. The activity needing a permit requires a public hearing and is reviewed for consistency with the Comprehensive Plan; if it meets the purpose and intent of the zoning classification; if it is compatible with the existing and permitted uses allowed in the zoning classification; and if it conforms with environmental ordinances and any other findings during review. Permit conditions are established on case by a case-by-case basis, depending on the activity. Critical Areas and Shoreline Master Programs Klickitat and Skamania Counties adopted Critical Areas Ordinances in 2003 and 1996, respectively. In addition, both counties have adopted Shoreline Master Programs (the 1996 and 1986 updates, respectively). Klickitat County Critical Areas include wetlands; critical fish/wildlife habitat conservation areas; geologically hazardous areas; aquifer recharge areas; and frequently flooded areas. Under Klickitat County’s Shoreline Master Program, proposed construction activities within 200 feet of a jurisdictional shoreline (such as the reservoir) would require a shoreline substantial development permit. This program lists the proposed action area as a conservancy environment. The purpose and intent of a conservancy environment is to protect, conserve and manage existing natural resources and/or unique, valuable, aesthetic, historic and cultural areas in order to achieve sustained resource utilization and provide recreational opportunities. Skamania County critical areas include watershed protection areas; wetlands, ponds, lakes, rivers, streams and creeks and associated riparian and buffer areas; frequently flooded areas; aquifer recharge areas; fish and wildlife habitat critical areas; geologically hazardous areas; landslide hazard areas; seismic hazard areas; volcanic hazard areas; mine hazard areas; and rockfall hazard areas. Skamania County’s Shoreline Master Program also requires a shoreline substantial development permit for construction activities within 200 feet of a shoreline. This program lists the proposed action area as a conservancy environment. In 4.9-2
Condit Dam Hydroelectric Project Final Supplemental EIS addition, the County lists the lower White Salmon River as a shoreline of state-wide significance. Shorelines of state-wide significance are recognized as deserving consideration beyond that prescribed to other bodies. Wetlands, rivers, buffers, fish and wildlife habitat conservation areas, and geologically hazardous, seismic and landslide hazards are all discussed in more detail in other sections. Volcanic and mine hazard areas are outside the proposed action area. There are no aquifer recharge areas mapped in Klickitat or Skamania Counties in the proposed action area. However, as part of the Shoreline Master Programs, various activities may be reviewed to determine potential effects and may require permits on a case-by-case basis. Although frequently flooded areas are not currently present in most of the project area because of the dam and canyon, floodplains are present. Various activities may be reviewed on a case-by-case basis. 4.9.2 Impacts Pre-Dam Removal and Dam Breaching and Removal Land Use The proposed action would affect land uses along or near the former shoreline both during and after construction. During construction, sites along or near the reservoir would be used for work areas, construction staging, or for disposal. In addition, access roads would be built in several locations. Work areas identified include one around the dam site for dam removal; one along the flowline for its removal; one near the powerhouse to remove the penstock; one near the surge tank for tank removal; one near the tail race to place fill in the area; one near the substation for substation removal and one along the powerline for powerline removal; one near the Big White Fish Ponds to clean the ponds; one near Northwestern Lake Bridge for bridge modifications; one along Northwestern Lake for sediment stabilization, woody debris management, and boat dock and cofferdam removals; and one along the shoreline about 1 mile above the dam to reestablish a water line below the sediment level. Work areas are shown on Figures 3-1 through 3-6 in Chapter 3. Staging areas identified include one adjacent to Powerhouse Road near the dam; one near the Powerhouse Road bend; one in the upland area off of Powerhouse Road for staging and stockpiling; one near the flowline; and one at the Becker site for flowline materials and dam removal equipment. Staging areas and associated access roads are shown on Figures 3-1 through 3-6 in Chapter 3. In the upland staging area, about 7 acres would be located on PacifiCorp’s land near Well No. 2 (City of White Salmon) and near proposed Klickitat County plats (near Tamarack Road). Potential impacts to the well relate to a well setback area (aquifer recharge and protection) and to County subdivision procedures. In addition, a portion of this area (about 2 acres) may be used for concrete storage or disposal. 4.9-3
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Condit Dam Removal Final SEPA Suppl
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March 23, 2007 Dear interested part
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Contents Public Meetings Response P
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