2022-04-04_PERMIT FILE - M2022013 (33)

Home Browse Search

Threatened and Endangered Species Habitat Assessment Two Rivers Parcels-Varra Companies Weld County, Colorado Table 1. Small mammal species captured in the project area,September 2017. Deer Mouse House Mouse Meadow Vole Prairie Vole Sept. 12 Female Adult 5 Juvenile 2 Male Adult 3 Juvenile 3 Unknown 2 Sept. 13 Female Adult 4 1 1 Juvenile 2 Male Adult 7 1 1 Juvenile 2 Unknown 2 1 Sept. 14 Female Adult 1 Juvenile Male Adult 3 Juvenile Unknown 4 1 2 Sept. 15 Female Adult 1 Juvenile 1 Male Adult 6 Juvenile 1 Unknown 2 1 TOTAL 49 5 5 1 Deer mouse captures resulted in 82 percent of the total small mammals captured. House mouse and meadow vole were just over 8 percent of captures each, and the single prairie vole accounted for about 1 percent of the total small mammals captured. During the four nights of trapping, 136 of a total of 720 traps were found closed but empty(18 percent unavailable). On two occasions, a single trap was found open and broken. The large number of closed traps indicates the presence of other predatory mammals in the area. Several raccoon prints were observed on-site. Four other previous trapping surveys were conducted within 2 miles of the project area from 1997 to 2006. A positive trap location was found in June 2001 by Savage& Savage, approximately 1.7 miles southwest of the project area along the South Platte River(Savage and Savage 2001). The other three survey attempts did not result in positive trapping of Preble's (Service 2020). Best Management Practices (BMPs) Incorporated as Part of the Project The following BMPs have been incorporated into the project design to avoid and minimize adverse impacts on Preble's. • Work areas will be stabilized in a manner to prevent or minimize soil erosion. ERO Project#21-266 5 =R0 Resources Corporation