Potential impacts of the alternatives under consideration are presented in the AA/DEIS along with information on their benefits and costs. This document also proposes ways to avoid or reduce the possible impacts that could result from the alternatives under consideration. In addition, the AA/DEIS estimates the capital and operating and maintenance costs, the ridership, and cost effectiveness of each alternative. The AA/DEIS for the Purple Line follows the relevant FTA’s guidelines.
The AA/DEIS was available for public review for 90 days from October 17, 2008 to January 14, 2009. During this time, the Maryland Department of Transportation Maryland Transit Administration (MDOT MTA) held a series of public meetings and accepted and recorded public comments on the document and the project. The State of Maryland considered the public comments in making the decision on which alternative it selected. The Preferred Alternative was selected by Governor O'Malley in August 2009.
AA/DEIS Document
AA/DEIS Document
36.33 MB
Executive Summary
702.19 KB
AA/DEIS Document by Chapter
Table of Contents
58.77 KB
Executive Summary
720.53 KB
Chapter 1 - Purpose and Need
1.57 MB
Chapter 2 - Alternatives Considered
3.18 MB
Chapter 3 - Transportation and Traffic
747.05 KB
Chapter 4 - Environmental Resources, Impacts, and Mitigation
24.63 MB
Chapter 5 - Costs and Funding
122.69 KB
Chapter 6 - Evaluation of Alternatives
125.69 KB
Glossary and Acronyms
119.79 KB
List of Recipients
84.95 KB
List of Preparers
120.75 KB
AA/DEIS Technical Reports
Air Quality Technical Report
4.84 MB
Architectural History Technical Report
6.76 MB
Capital Cost Estimating Methodology Technical Report
1.07 MB
Conceptual Plans Technical Report
63.84 MB
BRT Alternatives: Low Investment Option
11.54 MB
BRT Alternatives: Medium Investment Option
13.36 MB
BRT Alternatives: High Investment Option
19.75 MB
LRT Alternatives: Low Investment Option
24.41 MB
LRT Alternatives: Medium Investment Option
14.69 MB
LRT Alternatives: High Investment Option
19.75 MB
Definition of Alternatives Technical Report
5.35 MB
Energy Technical Report
427.51 KB
Geotechnical Data Technical Report
83.43 MB
Hazardous Materials Technical Report
8.91 MB
Natural Resources Technical Report
29.65 MB
Noise and Vibration Technical Report
1.37 MB
Operating and Maintenance Cost Estimate Technical Report
490.42 KB
Preliminary Section 4(f) Evaluation Technical Report
6.18 MB
Public Outreach and Coordination Technical Report
41.12 MB
Socioeconomic Technical Report
14.66 MB
Traffic Analysis Technical Report
8.15 MB
Travel Demand Forecasting Technical Report
1.26 MB