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2.04.11 <br />Appendix A of the DOI- BLM- CO -S050- 2013 -0010 environmental assessment <br />summarizes the threatened and endangered species in the Spruce Stomp <br />lease by application (LBA) review area (COC- 75916) as follows: <br />USFWS (2012) identified 12 species as endangered, threatened, or <br />candidate under the Endangered Species Act (ESA) that may occur in Delta <br />County. In addition to federally - listed species, the USFS and BLM identified <br />19 other species as sensitive with the potential to occur within the general <br />area of the LBA tract. <br />One endangered, threatened, or candidate species (Greenback cutthroat <br />trout) is present in the LBA tract. No other T & E species are likely to be <br />present in the LBA tract. There are numerous BLM and USFS sensitive <br />species that may be present in or near the LBA tract. They include the <br />following: <br />American marten <br />Spotted bat <br />Townsend's bid eared bat <br />Fringed m otis <br />Hoary bat <br />Big free - tailed bats <br />American peregrine falcon <br />Bald Eagle <br />Northern goshawk <br />Flammulated owl <br />Purple Martin <br />Olive -sided flycatcher <br />Lewis's woodpecker <br />Colorado River cutthroat trout <br />Northern leopard frog <br />Milk Snake <br />Midget faded rattlesnake <br />Miller Ecological Consultants, Inc. (MEC), working under the direction of <br />Bowie, conducted sampling at five locations along West Fork Terror Creek in <br />2012. This effort produced density estimates of 563 +/- 35 fish /mile and 352 <br />+/- 35 adult fish /mile at a lower West Fork Terror Creek sampling location <br />and 1,319 +/- 47 fish /mile and 600 +/- 14 adult fish /mile at an upper West <br />Fork Terror Creek sampling location. MEC also sampled fish at three <br />locations not previously sampled by the USFS. These locations had similarly <br />high fish density measurements. <br />MEC also collected cutthroat trout fin clips for analysis of mtDNA sequence. <br />Based on this analysis, the cutthroat trout population in West Fork Terror <br />Creek has approximately 94 percent purity as GB- lineage cutthroat trout. <br />Concurrent with the preparation of this report, an article was published in the <br />Journal of Molecular Ecology that further examines the historic genetic <br />diversity and ranges of cutthroat trout populations in Colorado (Metcalf, <br />2012). This research identifies that the only existing population of greenback <br />cutthroat trout is located in the Arkansas River watershed. Further, the fish <br />previously assigned to the GB- lineage were found to share genetic <br />PR -14 2.04-118- 06/14 <br />