"TRB's Airport Cooperative Research Program (ACRP) Report 84: Guidebook for Preparing Airport Emissions Inventories for State Implementation Plans is designed to assist in the preparation of airport emissions inventory component of a State Implementation Plan. The Guidebook offers a basic, intermediate, and advanced approach for preparation of an airport emissions inventory. Each approach is progressively more complex, requiring increasingly detailed input data that generates greater airport specificity and accuracy. The choice of a particular approach is up to the user as a function of the level of response appropriate to a specific airport, the demands of the facility and the surrounding community, and data availability. A CD-ROM, which is included with the print version of the report, contains an Airport Emissions Estimator Tool that applies to the basic approach. In addition, the CD-ROM includes the appendixes that accompany ACRP Report 84 as well as other project-specific material."--Publisher's description.

" TRB's Airport Cooperative Research Program (ACRP) Report 82: Preparing Peak Period and Operational Profiles - Guidebook describes a process and includes software for converting annual airport activity forecasts into forecasts of daily or hourly peak period activity. The two Excel-based software modules are designed to help estimate current and future design day aircraft and passenger operation levels based on user-defined design day parameters. " -- publisher's description

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

"This report presents an evaluation of the current methods used to generate air emissions information from all freight transportation activities and discusses their suitability for purposes such as health and climate risk assessments, prioritization of emission reduction activities (e.g., through State Implementation Plans), and public education. The report is especially valuable for (1) its identification of the state of the practice, gaps, and strengths and limitations of current emissions data estimates and methods and (2) its conceptual model that offers a comprehensive representation of freight activity by all transportation modes and relationships between modes. This report will better inform the near-term needs of public and private stakeholders regarding the quality of emissions data and guide future research that links freight activities with air emissions."--pub. desc.