Arizona Department of Environmental Quality (ADEQ) is currently conducting its the Clean Water Act Triennial Review Rulemaking. The draft rule is make several changes to existing State rules.
ADEQ proposes substantial changes to the following areas of the Rule:
- Definitions [A.A.C. R18-11-101]
- Mixing Zones [A.A.C. R18-11-114]
- Variances [A.A.C. R18-11-122]
- Numeric Water Quality Criteria [18 A.A.C. 11, Art. 1, Appendix A]
- E. Coli Numeric Water Quality Criteria [A.A.C. R18-11-109(A)]
- Site Specific Standard Criteria [A.A.C. R18-11-115]
- Enforcement [A.A.C. R18-11-120]
- Listed Site Specific Standards [18 A.A.C. 11, Art. 1, Appendix C]
ADEQ proposes minor technical corrections or clarifications to:
- Antidegradation [A.A.C. R18-11-107]
- Nutrient Criteria Language [A.A.C. R18-11-109(F)]
- Listed Surface Waters and Designated Uses [18 A.A.C. 11, Art. 1, Appendix B]
ADEQ is not proposing to make changes to the following areas of the RUle in this Triennial Review:
- Selenium Numeric Water Quality Criteria [18 A.A.C. 11, Art. 1, Appendix A]
- Outstanding Arizona Waters [A.A.C. R18-11-112]
- Surface Water Definition [A.A.C. R18-11-101]
- Effluent Dependent Water Definition or Applicability [A.A.C. R18-11-101 & A.A.C. R18-11-113]