In a cooperative effort, the Federal Highway Administration (FHWA), the Colorado Department of Transportation (CDOT), and the City and County of Denver (CCD) have prepared this Environmental Assessment (EA) for a proposed new interchange on Interstate 70 (I-70) with Central Park Boulevard (CPB) in Denver, Colorado. The proposed project will create new access to I-70, constituting a Federal Action subject to the National Environmental Policy Act (NEPA). This EA evaluates the socioeconomic and environmental impacts of the project as well as the traffic impacts to I-70 at the proposed interchange location.
Round-leaf four o'clock (Oxybaphus rotundifolius) is a medium-tall plant in the Nyctaginaceae (Four o'clock Family) that is restricted to barren shale outcrops of the Smoky Hill Member of the Niobrara Formation in sparse shrublands or woodlands and is considered to be imperiled at a global and state level. One of the biggest conservation issues for this imperiled plant species is the lack of awareness of its existence and status. Avoiding or minimizing impacts to this species during road maintenance activities will effectively help to conserve its habitat and is unlikely to confer substantial impacts on road maintenance goals and projects.
Businesses performing Printing, Coating, and Dyeing of Fabrics and Other Textiles in Colorado are subject to very specific and often complex State and Federal air quality requirements that exist above and beyond reporting and permitting requirements common to other surface coating operations. Specific requirements for Printing, coating, and dyeing of fabrics and other textiles covered in this fact sheet include Colorado Air Regulation No. 7 and Federal Maximum Achievable Control Technology Standards (MACT).
All highway and related transportation system air quality studies within the jurisdiction of the Department of Highways shall conform to the procedure, format and content described in these guidelines. The guidelines shall be included in all consultant agreements for environmental assessments, environmental impact statements and air quality studies and shall further be a part of all agreements with and binding upon any sub-consultants conducting air quality studies.
Total Maximum Daily Load (TMDL) is used to determine the maximum amount of a pollutant that a water body may receive and still maintain water quality standards. The mainstem of Silver Creek from a point immediately below the Town of Ricos water supply diversion to the confluence with the Dolores River is included in the 2006 303(d) list for exceeding the Aquatic Life use standards for zinc and cadmium.
Surveys of the Colorado River near Grand Junction, Colorado show that populations of Colorado squawfish (Ptychocheilus lucius) and razorback sucker (Xyrauchen texanus) are small and continue to decline. A potentially important factor in their decline is a reduction in the amount of available habitat. The fish are most commonly found in habitats of complex channel which may be affected by bank stabilizing activities and regulation of the river flow. Areas with channel complexity provide important habitats for the fish in both their adult and larval life stages. Adult fish apparently prefer these areas because they provide a range of habitats for feeding shelter and reproduction.
