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.
The statements that 90% of top lenders use FICO Scores and FICO Scores are used in 90% of credit decisions are based on a third-party study of all versions of FICO Scores sold to lenders, including but not limited to scores based on FICO Score 8. Base FICO Scores (including the FICO Score 8) range from 300 to 850.