Section 368.220  A1 Factor (Overall Use Support Assessment)

A1 is a factor that evaluates inland lakes based on their overall use support assessment rating. The possible degrees of use support assessment are Full, Full/Threatened, Partial/Minor impairment, Partial/Moderate impairment, or Nonsupport.  Priority points for the A1 factor are allocated as follows (0-100 points possible):

This factor will be calculated by the Agency using the data for the lake and methodology set out in the most recent Illinois Water Quality Report, "Illinois Assessment of Water Resource Conditions", produced by the Agency pursuant to Section 305(b) of the Federal Water Pollution Control Act (33 USC 1315(b)). See the "Illinois Assessment of Water Resource Conditions 1994-1995," IEPA/BOW/96-060(a) and (b) (September 1996) for further information.