...a series of mainly preliminary studies (subject to revision) with the following titles: Impact of Long 4 Percent Grade / Total Removal of Elevated Structure vs. Staged Construction / Venting of Decked-over Depression / Aided Ramps / Preliminary Traffic Noise Predictions for Central Artery Alternates / Preliminary L 10 Predictions for Central Artery Alternates (see memo dated 13 March 1974 for L 50 Predictions) / Traffic Usage Central Artery Southeast Expressway Ramps / Central Artery Comparison of High Level vs. Low Level Profiles North Street to Charles River / Review of I-93 - Mystic Bridge Central Artery Connections in Charlestown Proposed By Bill Lamb of the Sierra Club / 9-page Report of Ventilation Requirements for Central Artery, Rail Connection / Technical Memo #12: Relationship of Depressed Artery to North Terminal Proposals / Technical Memo #13: History of the Central Artery / Technical Assistance Primer # 1: A Quick Review of Historic Preservation and Environmental Law Affecting Transportation Projects Funded with Federal Assistance / Cross-Boston Tunnel, Proposed by Arthur Hall; attached is an article "Environmental Issues in European Transportation" which is an overview on the state-of-the-art in transportation planning; this item was in the BRA collection...