The federal brownfields statute defers jurisdiction of such sites to the state so that, in effect, the brownfields agreement is the agreement that governs the liability from the state and federal level.
The maximum FICO score is 850 (minimum 300). Another common credit score is the VantageScore; the maximum is 990 (minimum 501). There are other credit scores, from the credit bureau and other third-parties. If you purchase one of these scores, the score provider will give you the scale for that score.
Even Ulzheimer, a nationally renowned credit expert who has worked at FICO and Equifax, has never personally gotten a perfect FICO score. He once got a 990 VantageScore, which in a previous version of the scoring model was the highest possible score. (In its third-generation scoring model, VantageScore changed its score range to 300-850.). I don't obsess about it, he says.