Greenhouse Gas Analysis

During the selection process for the Locally Preferred Alternative, local partner agencies requested an independent review of greenhouse gas emissions analysis conducted by the Columbia River Crossing project.

A panel of independent experts reviewed and evaluated the greenhouse gas emissions analysis presented in the project’s Draft Environmental Impact Statement (EIS). The Greenhouse Gas Emissions Expert Review Panel found the CRC analysis and conclusions to be reasonable. The Panel agreed with the CRC finding that the Locally Preferred Alternative would generate lower greenhouse gas emissions than the no build alternative. Suggestions were provided to refine the calculations for the Final EIS. The Panel’s detailed findings can be found in the Greenhouse Gas Emission Analysis Expert Review Panel Report.

The primary purpose of CRC’s greenhouse gas emissions analysis was to compare alternatives presented in the Draft EIS. The methodology used to calculate greenhouse gas emissions was based on energy consumed during construction and operation of the CRC project and the associated carbon dioxide that results. For example, the combustion of diesel to power buses through the project area emits carbon dioxide and other gases as a byproduct. Carbon dioxide is the primary component of greenhouse gases.

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