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I-93 EXIT 4A INTERCHANGE STUDY DERRY-LONDONDERRY

DRAFT ENVIRONMENTAL IMPACT STATEMENT

Prepared for

Town of Derry Town of Londonderry 14 Manning Street 268 B Mammoth Road Derry, NH 03038 Londonderry, NH 03053

U.S. Department of Transportation,

Federal Highway Administration Lead Agency

Prepared by

Maine • New Hampshire • Vermont

and

Woodlot Alternatives, Inc. Topsham, ME 04086

July 2007

Draft Environmental Impact Statement I-93 Exit 4A Interchange Study

List of Figures Figure No. Description 1-1 Regional Location Study Area 1-2 Study Area 1-3 Street Map 2.2-1 First Draft of Alternative Corridors – April 22, 1999 2.2-2 Second Draft of Alternative Corridors – May 25, 1999 2.2-3 Initial Corridor Alternatives – June 16, 1999 2.3-1 Initial Corridor Alternatives – Resource Constraints 2.3-2 Remaining Corridor Alternatives – October 7, 1999 2.4-1 Remaining Corridor Alternatives – October 26, 1999 2.4-2 Remaining Corridor Alternatives – November 17, 1999 2.5-1 Reasonable Range of Alternatives – Build Alternatives 2.5-2a Alternative A – 1 of 2 2.5-2b Alternative A – 2 of 2 2.5-2c Typical Road Section for Build Alternatives 2.5-3a Alternative B – 1 of 2 2.5-3b Alternative B – 2 of 2 2.5-4a Alternative C – 1 of 2 2.5-4b Alternative C – 2 of 2 2.5-5a Alternative D – 1 of 2 2.5-5b Alternative D – 2 of 2 2.5-6a Alternative F – 1 of 2 2.5-6b Alternative F – 2 of 2 3.1-1 Study Area Roadways 3.1-2 Crash History, 2000-2005 3.1-3 Traffic Count Locations 3.1-4 2005 AM Peak Hour Traffic on Local Roads 3.1-5 2005 PM Peak Hour Traffic on Local Roads 3.1-6 2005 AM Peak Hour Traffic on I-93 and at Exits 4 and 5 3.1-7 2005 PM Peak Hour Traffic on I-93 and at Exits 4 and 5 3.3-1 Surface Water Resources 3.3-2 Groundwater Resources 3.3-3 Floodplains 3.4-1 Soils 3.4-1a Soils Series 3.4-2 Farmlands 3.4-3 Wetland Resources 3.4-4 Prime Wetlands 3.4-5 Plant Communities 3.4-6 Wildlife Resources 3.6-1 Noise Measurement Locations 3.8-1 Archaeological Resource Constraints 3.8-2 Historic Architectural Resources 3.8-3 Broadway and Birch Street Historic Districts 3.9-1 Regional Context of Socio-Economic Study Area

Figure No. Description 3.9-2 Socio-Economic Study Area Detail 3.10-1 Parks, Recreation and Conservation Lands 3.11-1 Potential Petroleum, Hazardous Materials, and Solid Waste Sites 4.1-1 2020 AM Peak Hour – No-Build Alternative Traffic on Local Roads 4.1-2 2020 PM Peak Hour – No-Build Alternative Traffic on Local Roads 4.1-3 2020 AM Peak Hour – Alternative A Traffic on Local Roads 4.1-4 2020 PM Peak Hour – Alternative A Traffic on Local Roads 4.1-5 2020 AM Peak Hour – Alternative B Traffic on Local Roads 4.1-6 2020 PM Peak Hour – Alternative B Traffic on Local Roads 4.1-7 2020 AM Peak Hour – Alternative C Traffic on Local Roads 4.1-8 2020 PM Peak Hour – Alternative C Traffic on Local Roads 4.1-9 2020 AM Peak Hour – Alternative D Traffic on Local Roads 4.1-10 2020 PM Peak Hour – Alternative D Traffic on Local Roads 4.1-11 2020 AM Peak Hour – Alternative F Traffic on Local Roads 4.1-12 2020 PM Peak Hour – Alternative F Traffic on Local Roads 4.1-13 2025 AM Peak Hour – No-Build Alternative Traffic on I-93 and at Exits 4 and 5 4.1-14 2025 PM Peak Hour – No-Build Alternative Traffic on I-93 and at Exits 4 and 5 4.1-15 2025 AM Peak Hour – Alternative A Traffic on I-93 and at Exits 4, 4A, and 5 4.1-16 2025 PM Peak Hour – Alternative A Traffic on I-93 and at Exits 4, 4A, and 5 4.1-17 2025 AM Peak Hour – Alternative B Traffic on I-93 and at Exits 4, 4A, and 5 4.1-18 2025 PM Peak Hour – Alternative B Traffic on I-93 and at Exits 4, 4A, and 5 4.1-19 2025 AM Peak Hour – Alternative C Traffic on I-93 and at Exits 4, 4A, and 5 4.1-20 2025 PM Peak Hour – Alternative C Traffic on I-93 and at Exits 4, 4A, and 5 4.1-21 2025 AM Peak Hour – Alternative D Traffic on I-93 and at Exits 4, 4A, and 5 4.1-22 2025 PM Peak Hour – Alternative D Traffic on I-93 and at Exits 4, 4A, and 5 4.1-23 2025 AM Peak Hour – Alternative F Traffic on I-93 and at Exits 4, 4A, and 5 4.1-24 2025 PM Peak Hour – Alternative F Traffic on I-93 and at Exits 4 and 5 4.3-1 Modeled Stormwater Discharge Locations – No-Build Alternative 4.3-2 Modeled Stormwater Discharge Locations – Alternative A 4.3-3 Modeled Stormwater Discharge Locations – Alternative B 4.3-4 Modeled Stormwater Discharge Locations – Alternative C 4.3-5 Modeled Stormwater Discharge Locations – Alternative D 4.3-6 Modeled Stormwater Discharge Locations – Alternative F 4.4 Wetland Functions and Values Symbols Key 4.4-1 Wetland Impacts and Functional Evaluation for Alternative A 4.4-2 Wetland Impacts and Functional Evaluation for Alternative A 4.4-3 Wetland Impacts and Functional Evaluation for Alternative B 4.4-4 Wetland Impacts and Functional Evaluation for Alternative B 4.4-5 Wetland Impacts and Functional Evaluation for Alternative C 4.4-6 Wetland Impacts and Functional Evaluation for Alternative C 4.4-7 Wetland Impacts and Functional Evaluation for Alternative D 4.4-8 Wetland Impacts and Functional Evaluation for Alternative D 4.4-9 Wetland Impacts and Functional Evaluation for Alternative F 4.4-10 Potential Mitigation Site Locations

Draft Environmental Impact Statement I-93 Exit 4A Interchange Study

List of Figures Figure No. Description 4.4-11 Potential Mitigation Site #1 4.4-12 Potential Mitigation Sites #2 and #3 4.4-13 Potential Mitigation Sites #4 and #5 4.4-14 Cover Type Evaluation for Alternative A 4.4-15 Cover Type Evaluation for Alternative A 4.4-16 Cover Type Evaluation for Alternative B 4.4-17 Cover Type Evaluation for Alternative B 4.4-18 Cover Type Evaluation for Alternative C 4.4-19 Cover Type Evaluation for Alternative C 4.4-20 Cover Type Evaluation for Alternative D 4.4-21 Cover Type Evaluation for Alternative D 4.4-22 Cover Type Evaluation for Alternative F 4.6-1 Noise Impacted Receptors for Alternative A 4.6-2 Noise Impacted Receptors for Alternative A 4.6-3 Noise Impacted Receptors for Alternative B 4.6-4 Noise Impacted Receptors for Alternative B 4.6-5 Noise Impacted Receptors for Alternative C 4.6-6 Noise Impacted Receptors for Alternative C 4.6-7 Noise Impacted Receptors for Alternative D 4.6-8 Noise Impacted Receptors for Alternative D 4.6-9 Noise Impacted Receptors for Alternative F 4.6-10 Noise Impacted Receptors for Alternative F 4.8-1 Archaeological Resources 4.8-2 Impacted Historic Resources – Alternatives C and D 4.9-1 Change in Land Development – 1974 to 1998 Socio-Economic Area 4.10-1 Impacted Parks – Alternatives B and C 4.11-1 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative A 4.11-2 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative A 4.11-3 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative B 4.11-4 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative B 4.11-5 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative C 4.11-6 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative C 4.11-7 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative D 4.11-8 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative D 4.11-9 Potential Petroleum, Hazardous Materials Sites, and Solid Waste Sites for Alternative F