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Pinyon <br /> 2. Methods <br /> Pinyon biologists Mark Fletcher and Tim Merlino visited the site on August I I through 13, 2020, to assess the <br /> study area for biological resources. The weather during the site visit was clear and sunny,and the temperature <br /> was approximately 95' Fahrenheit. <br /> 2.1 Study Area <br /> Pinyon was provided with the boundaries where the maximum extent of project impacts are anticipated to <br /> occur. This area is further referred to in this report as the "study area." <br /> 2.2 Survey Parameters <br /> Pinyon personnel surveyed the study area for biological resources by walking and/or driving throughout the <br /> study area and recording the locations of sensitive habitat features (Figure 2). During the site visit, data were <br /> recorded using tablet-based Collector for ArcGIS paired with a Trimble RI antenna to obtain sub-meter <br /> accuracy. The data were downloaded and mapped in ArcGIS mapping software. Notes and photographs were <br /> taken to record field conditions (Appendix A). <br /> The following activities were completed during the site visit: <br /> • General habitat conditions and land uses were noted. Dominant plant species and plant habitats were <br /> recorded. <br /> • The study area was evaluated for protected species and their habitats, including: <br /> o Federally listed threatened and endangered species, as specified by the USFWS online Information for <br /> Planning and Consultation (IPaC) System (USFWS, 2020). <br /> o State-listed endangered, threatened, and sensitive species, as specified by USGS quadrangle on the <br /> CPW and Colorado Natural Heritage Program (CNHP)websites (CPW, 2019a; CNHP, 2020). <br /> o Migratory birds. <br /> • Potential WUS were mapped/delineated in accordance with the 1987 USACE "Wetland Delineation <br /> Manual'and the 2010 Corps"Regional Supplement to the Corps of Engineers Wetland Delineation Manual: <br /> Great Plains Region (Version 2.0)" (Environmental Laboratory, 1987; USACE, 2010). The boundaries of <br /> the ordinary-high water mark(OHWM)were identified in accordance with the 2014 USACE "A Guide to <br /> Ordinary High Water Mark(OHWM) Delineation for Non-Perennial Streams in the Western Mountains, <br /> Valleys, and Coast Region of the United States" (USACE, 2014). In general, the OHWM was determined <br /> based on the presence of bed and bank, a visible impression on the shoreline, a change in substrate type <br /> or texture, or a change in vegetation. Wetland determination data forms are included in Appendix B. <br /> • Noxious weeds were documented but not mapped. <br /> Biological Resources Report <br /> Thunderbird Property <br /> Pueblo County, Colorado Page 3 <br />