October 16, 2008 – Federal Register Recent Federal Regulation Documents

The Forest Service is issuing these interim final directives as an amendment to Forest Service Manual 2350, Trail, River, and Similar Recreation Opportunities, and Forest Service Handbook 2309.18, the Trail Management Handbook, to incorporate revisions to the agency's national trail classification system (TCS), consisting of the Trail Classes and Design Parameters. Chapters 30 and 40 in the Trail Management Handbook have not been included in these interim final directives because these chapters do not relate directly to the TCS and Design Parameters and because the agency plans to update them significantly. The comments on these chapters will be addressed in preparation of final directives. The agency is providing a 60-day public comment period on these interim final directives and will review timely comments in developing final directives. Trail Classes are general categories reflecting trail development scale, arranged along a continuum. Managed Uses are the modes of travel that are actively managed and appropriate on a trail, based on its design and management. Designed Use is the Managed Use of a trail that requires the most demanding design, construction, and maintenance parameters and that, in conjunction with the applicable Trail Class, determines which Design Parameters will apply to a trail. The Design Parameters are technical guidelines for the survey, design, construction, maintenance, and assessment of a trail, based on its Designed Use and Trail Class.

We are adopting a new airworthiness directive (AD) for certain Boeing Model 747-400, 747-400D, and 747-400F series airplanes. This AD requires installing an extension tube to the existing pump discharge port of the scavenge pump on the outboard side of the center fuel tank in the main fuel tank 2. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent a fire or explosion in the fuel tank and consequent loss of the airplane.

In accordance with the Agricultural Bioterrorism Protection Act of 2002, we are amending and republishing the list of select agents and toxins that have the potential to pose a severe threat to animal or plant health, or to animal or plant products. The Act requires the biennial review and republication of the list of select agents and toxins and the revision of the list as necessary. This action implements the findings of the second biennial review of the list.