Environmental Assessment for Equitrans, LP's Ohio Valley Connector Project under CP15-41.

Federal Energy Regulatory Commission Office of Energy Projects, Division of Gas-Environment & Engineering ENVIRONMENTAL ASSESSMENT REPORT Name of Applicant: Equitrans, L.P. (Equitrans) Date Filed: 12/22/14 and 5/5/15 Docket No: CP15-41-000 and CP15-41-001 Type: Section 7(c) Construction of Facilities Cost: $415,502,168 Facilities: Equitrans' Ohio Valley Connector Project involves construction of about 37.0 miles of new natural gas pipeline and auxiliary facilities in Wetzel and Marshall Counties, West Virginia and Monroe County, Ohio to provide 850,000 dekatherms per day of firm natural gas transportation service. Two new compressor stations would also be constructed, including the 15,000 horsepower Corona Compressor Station in Wetzel County, West Virginia and the 21,000 horsepower Plasma Compressor Station in Monroe County, Ohio. Environmental Impact -- Conclusions: Categorical Exclusion Deficiency Letter Required Environmental Comments Required EA/EIS Required X Environment Complete No NOI Required NOI Required Environmental Considerations or Comments: See the attached environmental assessment. Date: Approved by Branch Chief: Date: MA-3A045 /0/03/2045 Federal Energy Regulatory Commission Office of Energy Projects October 2015 Equitrans, LP Docket Nos. CP15-41-000 CP15-41-001 Ohio Valley Connector Project Environmental Assessment Washington, DC 20426 Cooperating Agency US Army Corps of Engineers TABLE OF CONTENTS EQUITRANS, LP OHIO VALLEY CONNECTOR PROJECT A. PROPOSED ACTION ........................................................................................................ 1 4.1 Pipeline Facilities ......................................................................................... 9 4.2 Aboveground and Appurtenant Facilities................................................... 11 5.1 Pipeline Facilities ....................................................................................... 14 5.2 Aboveground Facilities .............................................................................. 19 5.3 Laydown/Contractor Yards ........................................................................ 19 5.4 Access Roads .............................................................................................. 19 7.1 General Pipeline Construction Procedures ................................................. 22 7.2 Special Pipeline Construction Procedures .................................................. 25 7.3 Aboveground Facility Construction Procedures ........................................ 32 7.4 Environmental Compliance Inspection and Monitoring ............................ 32 7.5 Operations and Maintenance ...................................................................... 33 B. ENVIRONMENTAL ANALYSIS ................................................................................... 37 1.1 Geology ...................................................................................................... 37 1.2 Soils ........