[Terr_]

IANAL, but:

1. It seems the plaintiff is the Southern Environmental Law Center, which makes a lot more sense when the issue is violations of environmental law. The NAACP is supporting, and I can imagine that there are some consistent overlaps between what the two groups are concerned with, given that where people pollute in the south correlates to where certain ethnicities can afford (or were allowed) to buy property and live.

2. Certain laws (in this case probably the Clean Air Act) creates a category of "citizen suits", or "private right of action". While that doesn't totally eliminate "I am harmed" standing, it does means you don't need to "the one whose laws were harmed." In other words, it means you can sue for a violation of federal law instead of being stuck waiting for the federal Department of Justice to care.