Except for §311.67 of this title (relating to Nutrient Control), this subchapter applies to discharges into the water quality areas of Lakes Worth, Eagle Mountain, Bridgeport, Cedar Creek, Arlington, Benbrook, and Richland-Chambers. Section 311.61 and §311.66 of this title (relating to Definitions; and More Stringent Requirements, respectively) also apply to the Benbrook Lake watershed. Section 311.67 of this title only applies to discharges to the Benbrook Lake watershed and Benbrook Lake water quality area.