Effingham County commissioners have agreed to make adjustments in the stipulations placed on the Effingham Industrial Development Authority for its tracts off Interstate 16. The original stipulations were imposed on the two tracts — a tract of more than 1,500 acres north of I-16 and a tract of 180 acres on the south side of the interstate — eight years ago. They called for the IDA to build a tertiary-level wastewater treatment plant, with a capacity of 100,000 gallons per day more than the anticipated demand, along with maintaining an 800-foot buffer between the plant and adjoining property owners.