Emission decision.

The article discusses BNSF Railway's planned $1.5 billion complex in California and the potential impact of state environmental regulations on the project. The California Air Resources Board (CARB) is requesting a waiver from the US Environmental Protection Agency (EPA) to fully implement a new mandate for cleaner locomotives. However, the rail industry argues that the pace of the phase-out of diesel locomotives is too fast, making the project infeasible. The article also mentions the concerns of California environmental regulators about the health impact of locomotive emissions and the potential complications of regulating emissions across state and national borders. [Extracted from the article]