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This guidance document is designed to assist the user in the evaluation of plume visual impact as required by the Prevention of Significant Deterioration (PSD) and visibility regulations of the U.S. Environmental Protection Agency (EPA).

This chapter enumerates the authority, objectives, policy, responsibility, and definitions for planning, construction, reconstruction, operation, and maintenance of forest transportation facilities and for management of motor vehicle use on National Forest System (NFS) lands.

On November 9, 2005, the Forest Service published travel management regulations governing off-highway vehicles and other motor vehicles on national forests and grasslands.

This database contains information on faults and associated folds in the United States that demonstrate geological evidence of coseismic surface deformation in large earthquakes during the Quaternary (the past 1.6 million years).

The objective of these surveys was to investigate the potential presence and distribution of sensitive plant species in the Project Area.

This report presents the results of a site- specific probabilistic seismic hazard analysis (PSHA) and deterministic seismic hazard analysis (DSHA) for the Near West site in southern Arizona.

Topics include land use, demographics, specific industry sectors, the role of non-labor income, the wildland-urban interface, the role of amenities in economic development, and payments to county governments from federal lands.

Phase I Environmental Site Assessment (ESA) for 3,120.16 acres referred to as the Lower San Pedro River parcel in Pinal County, Arizona.

This regulation prescribes the guiding principles, policy, organization, responsibilities, and procedures for implementation of risk-informed dam safety program activities and a dam safety portfolio risk management process with the USACE.