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2018 Biological Resources Inventory Report <br /> 3 Water depletions in the North Platte River,South Platte River,and Laramie River basins may affect the species and/or critical habitat <br /> associated with the Platte River in Nebraska. <br /> 4 USFWS(2010) <br /> 5 CNHP(2015a) <br /> 6 CNHP(2015b) <br /> 2.2.1.4 State Listed Species <br /> CPW's threatened and endangered list includes state listed endangered and threatened species (CPW <br /> 2017). This list includes amphibians, birds, fish, and mammals. Table 4 summarizes the state listed <br /> species that were evaluated for presence within the Project and the status and the likelihood of <br /> occurrence in the study area. Species identified with a potential to occur in Table 4 are described in <br /> further detail below. Species of concern do not have any regulatory protection in Colorado, and impacts to <br /> these species will be minimized to the extent practicable using best management practices and <br /> avoidance measures. <br /> Table 4: <br /> State Listed Species and Their Likelihood of Occurrence Within the Project Area <br /> Taxonomic Common State <br /> Group Name Scientific Name Statue Likelihood of Occurrence within the Project Areal <br /> Amphibiansz Boreal Toad Bufo boreas SE Unlikely to occur.Habitat includes mountain lakes,ponds, <br /> meadows,and wetlands in subalpine forests,which do not occur in <br /> the Project area.Adults often feed in meadows and forest openings <br /> near water but sometimes in drier forest habitats.This species <br /> habitat is exclusively in the mountains of Colorado to the west of <br /> the Project area and typically above 8,500 feet above mean sea <br /> level. <br /> Birds' Burrowing Owl Athene cunicularia ST Moderate potential to occur in Project area.Burrowing Owls are <br /> known to utilize prairie dog colonies for habitat.Three potential <br /> prairie dog colonies were documented within the Project area <br /> (Figure 1). <br /> Least Tern Sterna antillarum SE Unlikely to occur.Breeds in the southern and eastern portion of the <br /> state,generally in the La Junta—Lamar area outside the Project <br /> area.Habitat consists of sandy hills and rooftops large rivers in the <br /> great plains and the Atlantic coast. <br /> Lesser Prairie Tympanuchus ST Unlikely to occur.Occupies the grasslands of Texas,Oklahoma, <br /> Chicken pallidicintus New Mexico,Kansas,and southeastern Colorado,outside the <br /> Project area. <br /> Mexican Strix occidentalis ST Unlikely to occur.Habitat consists of mature mixed-conifer,pine- <br /> Spotted Owl lucida oak,and riparian forest in canyon habitat.These habitat <br /> components are not present in the Project area. <br /> Plains Sharp- Tympanuchus SE Unlikely to occur.Occurs in native grassland habitats with shrub <br /> Tailed Grouse 1 phasianellus jamesii cover or grain fields that do not occur in or around the Project area. <br /> Piping Plover Charadrius melodus ST Unlikely to occur.The study area is outside typical breeding and <br /> circumcinctus wintering distribution.Occurs in the Platte River watershed <br /> downstream in Nebraska. <br /> Southwestern Empidonax trailhi SE Unlikely to occur.The tudy area is outside typical distribution. <br /> Willow extimus Breeding distribution in Colorado is limited to the southwestern <br /> Flycatcher portion of the state in riparian forests. <br /> Whooping Grus americana SE Unlikely to occur.The study area is outside typical distribution. <br /> Crane I I Occurs in the Platte River watershed downstream in Nebraska. <br /> 10 Tucson South Sand and Gravel Mine—Brighton,Colorado <br />