Gas Transmission Pipeline Expansion

Idaho, Washington, Oregon

ESA Adolfson completed a feasibility study for a major pipeline expansion project for PG&E National Energy Group in Idaho, Washington, and Oregon. The project involved expansion of a 250-mile segment of natural gas pipeline to accomplish pipeline looping. This project also proposed upgrades to six compressor stations and mainline valve stations. ESA Adolfson identified and mapped rare plants, wetlands, streams, noxious weeds, and habitat types using hand-held Global Positioning Systems (GPS). We prepared Geographical Information Systems (GIS) maps in support of the project using GPS data and also prepared technical sections of the Environmental Resource Reports for submittal to the Federal Energy Regulatory Commission (FERC). As part of environmental permitting for the project, ESA Adolfson staff also negotiated preliminary permit conditions with the US Army Corps of Engineers, Bureau of Land Management, and US Forest Service on behalf of PG&E National Energy Group.