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4A crosses the CMZ and 100-year floodplain <br />of the Cie Elum River near the south end of <br />Cie Elum Lake. Alternative 4A crosses the Cie <br />Elum River 100-year floodplain near its eastern <br />terminus. Alternative 5 is within the Yakima <br />River floodplain and CMZ near Cie Elum. <br />3.4.4 Environmental Species <br />Act (ESA) Listed Species and <br />Critical Habitat <br />The endangered and threatened species and <br />critical habitats criteria assess the alternatives <br />for impacts to ESA listed species and critical <br />habitats that may be impacted by the <br />proposed alternatives. The potential presence <br />of ESA listed species and designated critical <br />habitat adjacent to each alternative is shown in <br />Table 3-7. <br />All alternatives, with the exception of <br />Alternative 6 (no build alternative), may <br />affect bull trout and steelhead because there <br />would likely be in -water work associated with <br />construction in rivers and streams that support <br />these species. Alternatives 4a and 5 would <br />likely have the greatest potential for long term <br />impacts to butt trout and steelhead because <br />these alternatives require new bridge crossings <br />over the Cie Elum River and Yakima River, <br />respectively. Alternatives 1 through 3 provide <br />the greatest potential for improving water <br />crossings which could have longterm beneficial <br />effects for these species. <br />Construction noise may affect terrestrial <br />species associated with these Alternatives; <br />however, this cannot be analyzed until an <br />action area is defined and field surveys occur <br />to assess potential habitat for ESA listed <br />species during future assessments. <br />Species <br />Species that are potentially present within or <br />adjacent to the proposed alignment of each <br />CHAPTER 3: EXISTING CONDITIONS IN THE STUDY AREA <br />alternative are listed in Table 3-7. Additionally, <br />sensitive areas such as breeding buffers occur <br />for northern spotted owl within the study <br />areas for Alternatives 1 through 4a. <br />Critical Habitat <br />Alternatives 1 through 3 cross the Yakima River, <br />which is critical habitat for steelhead and bull <br />trout (Appendix B, Map 4A). Alternative 4A <br />passes through northern spotted owl critical <br />habitat and terminates near the Cie Elum <br />River (Appendix B, Map 4C). Alternative 4B also <br />passes through northern spotted owl critical <br />habitat and terminates near the Cie Elum River <br />(Appendix B, Map 4C). Alternative 5 adds new <br />crossings over the Yakima River but does not <br />pass through northern spotted owl critical <br />habitat. <br />3.4.5 Historical Sites, Parks, <br />and Recreational Facilities <br />Figure 3-3 provides the general location <br />for historical sites, as well as parks and <br />recreational facilities. These resources are <br />listed below. In addition to the following <br />resources, a more in-depth analysis was <br />performed which explores the geologic, <br />historic, cultural, and ethnographic setting <br />in the study area. This report is included in <br />Appendix C. <br />Cultural Sites <br />A preliminary review of the Department of <br />Archaeology and Historic Preservation's (DAHP) <br />resources database revealed at least 60 <br />previously recorded archaeological resources <br />within 0.5 miles of the 15.5-mile segment <br />of 1-90. In addition, the DAHP's statewide <br />predictive model indicates that the majority of <br />the highway segment under study lies within <br />an area with a very high risk of containing <br />archaeological features and/or materials. <br />VOLUME I: FEASIBILITY REPORT 1-90 Corridor - Easton to Cle Elunn Feasibility Study 1 45 <br />