Supplemental Environmental Assessment for the James J. Rowley Training Center Master Plan, 2017 Update November 2017 Prepared for Department of Homeland Security/ United States Secret Service JAMES J. ROWLEY TRAINING CENTER MASTER PLAN, 2017 UPDATE SUPPLEMENTAL ENVIRONMENTAL ASSESSMENT Responsible Agency: U.S. Secret Service Abstract: The U.S. Secret Service (USSS) has prepared this Supplemental Environmental Assessment (SEA) for the James J. Rowley Training Center (RTC) Master Plan 2017 Update, located in Prince George’s County, Maryland. The project includes the construction of new facilities, the renovation of existing facilities, the consolidation of facilities into precincts, infrastructure expansion, and security upgrades. This SEA considers the environmental effects of implementing a No Action (No Build) Alternative and an Action Alternative. For information concerning this document contact: Communications Center, SAF Attn: Thomas Franklin 245 Murray Lane, SW, Bldg. T-5 Washington, DC 20223 [email protected] Supplemental EA for the James J. Rowley Training Center Master Plan TABLE OF CONTENTS Introduction ....................................................................................................................................................................................................... 1 Project Location ............................................................................................................................................................................ 2 Purpose and Need for the Action ........................................................................................................................................ 2 History of the RTC ........................................................................................................................................................................ 4 Existing Facilities ........................................................................................................................................................................... 4 Public and Agency Involvement ........................................................................................................................................... 5 Issues and Impact Topics ........................................................................................................................................................ 5 Alternatives ....................................................................................................................................................................................................... 7 Actions Common to Both Alternatives ............................................................................................................................. 9 Alternative A: No Action Alternative ................................................................................................................................. 13 Alternative B: Action Alternative ........................................................................................................................................ 13 Alternative Considered But Dismissed .......................................................................................................................... 14 Affected Environment and Environmental Consequences................................................................................................... 21 Methodology of Affected Environment and Environmental Consequences ............................................. 23 Land Use and Planning Policies ......................................................................................................................................... 24 Socioeconomics, Environmental Justice, and Protection of Children .......................................................... 33 Historic and Archaeological Resources ........................................................................................................................ 38 Roadways and Traffic Patterns .......................................................................................................................................... 39 Parking ............................................................................................................................................................................................ 45 Public Transit ............................................................................................................................................................................... 46 Topography, Drainage, and Soils ...................................................................................................................................... 48 Water Resources ....................................................................................................................................................................... 53 Vegetation ..................................................................................................................................................................................... 65 Wildlife ............................................................................................................................................................................................. 72 Noise ................................................................................................................................................................................................ 74 Air Quality ....................................................................................................................................................................................... 76 Utilities ............................................................................................................................................................................................. 81 Stormwater Management ..................................................................................................................................................... 83 Sustainability ................................................................................................................................................................................ 85 Hazardous Materials ................................................................................................................................................................ 87 Coastal Zone Management .................................................................................................................................................. 89 Summary of Impacts................................................................................................................................................................ 91 Cumulative Impacts.................................................................................................................................................................. 99 Table of Contents i Supplemental EA for the James J. Rowley Training Center Master Plan References ...................................................................................................................................................................................................102 List of Preparers ........................................................................................................................................................................................106 Notification List ..........................................................................................................................................................................................110 Figures Figure 1: Project Location .......................................................................................................................................................................... 3 Figure 2: Existing Site Plan...................................................................................................................................................................... 15 Figure 3: 2012 RTC Master Plan .......................................................................................................................................................... 16 Figure 4: Proposed 2017 RTC Master Plan Update .................................................................................................................. 17 Figure 5: Comparison of 2012 RTC Master Plan and 2017 Master Plan Update....................................................... 18 Figure 6: Comparison of Existing Conditions, 2012 RTC Master Plan, and 2017 RTC Master Plan Update ..... .............................................................................................................................................................................................................................. 19 Figure 7: RTC Soil Types, Locations, and Existing and Proposed Hardscape ............................................................. 51 Figure 8: Wetlands and Waters Delineated within the RTC (2016) .................................................................................... 57 Figure 9: Impacts on Wetlands and Waters within the RTC .................................................................................................. 67 Figure 10: Vegetation Plan for Alternative A ................................................................................................................................