1. Metropolitan Council Environmental Services A Clean Water Agency Info Item: Waste Discharge Rules Presented to the Environment Committee September 14, 2010 Keith Buttleman, Asst. General Manager, Environmental Quality Assurance Leo Hermes, Manager, Industrial Waste, Environmental Quality Assurance

2. 2 National Pretreatment Program Clean Water Act; 40 CFR Part 403 Mn Stat 473.504 Minnesota delegated state – Minnesota Rules, chapter 7049 Metropolitan Council: Control Authority for industrial users Council enforces Waste Discharge Rules Program requirements in each plant NPDES Permit; annual MPCA audits

3. 3 Purpose of the Waste Discharge Rules Implement Federal Pretreatment Program Prevent process interference at wastewater treatment plants Minimize pollutant pass-through to receiving waters Avoid residual solids contamination Protect health/safety of treatment plant staff Protect regional wastewater infrastructure

4. 4 Carry out Water Resources Management Policy Plan Maintain federal and state grant/loan eligibility Comply with Clean Water Act Enable plants to meet NPDES/SDS permit requirements Prevent Inflow/Infiltration into MDS Purpose of the Waste Discharge Rules, contd

5. 5 Waste Discharge Rules

6. 6 Need for WDR Additions and Revisions Incorporate New State Pretreatment Rules Incorporate Customer Community requirements Revise to reflect current conditions (examples)

7. 7 Proposed Revisions and Format Change Article I – Customer Community Requirements: Connection and withdrawal provisions (some currently in WDR) Requirements related to customer community sewer operations Remittance of municipal wastewater charges

8. 8 Proposed Revisions and Format Change Article I (contd): Customer community requirements related to MDS facilities SAC administration – customer community administration Information and plan submittal

9. 9 Customer Community Requirements Incorporated in Proposal Direct connections to the MDS Sewer cleaning and maintenance practices Information and plan submittal

10. 10 Highlights of Other Proposed Waste Discharge Rules Revisions Article II - Industrial Discharge Permit: Require information submittal in lieu of permit application Clarification of permit conditions Details added related to MCES monitoring rights and methods Details added for self-monitoring data and report submittal New provisions for electronic data and information submittal

11. 11 Highlights of Other Proposed Waste Discharge Rules Revisions Article III – Specific Programs and Requirements: Clarification of Pollution Prevention and Best Management Practices Clarification of sections on hauled waste and special discharges Incorporation of industrial user SAC provisions Consolidation of all requirements related to payment of fees and charges by customer communities and industrial users Incorporation of dental clinic discharge requirements Incorporation of entry to MDS facilities – security and safety

12. 12 Highlights of Other Proposed Waste Discharge Rules Revisions Article IV – MDS Limitations on Discharges: Clarification of procedures for how we apply limits to hauled waste Clarification of requirements for grease interceptors and other separators Requirement to comply with potential regional FOG control program Clarification of requirements regarding prohibited wastes, including clear water discharges and wastes discharged into sewers to avoid off-site solid waste disposal Article V – Enforcement No significant changes proposed

13. 13 Next Steps for WDR Revisions MC Legal Counsel and MPCA review Adoption for Public Meeting purposes Provide 90 days public notice and conduct public meeting Direct communications with customer communities and industrial permittees Approval by EC and final MC adoption Implementation