implementation of antidegradation policies for indiana waters
TRANSCRIPT
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Implementation of Antidegradation
Policies for Indiana Waters
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Outline What Are the Components of Water Quality Standards? What Are Current Antidegradation Policies for Indiana? What Are the GLI Antidegradation Rule Components? Proposed Approach How Will the Default Antidegradation Effluent Limits Be
Determined? Is There a De Minimus? What Are the Requirements for a New/Increased
Discharge? What Information is Required in Part 1 of the
Antidegradation Application? When is Part 1 of the Antidegradation Application
Considered to be Complete? What Information is Required in Part 2 of the
Antidegradation Application? When is Part 2 of the Antidegradation Application
Considered to be Complete? How Will the Public Be Notified About the Process? Water Quality Project in an OSRW Summary Flow Chart
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What Are the Components of Water Quality Standards?
Designated Uses (40 CFR §131.10)
fishing, recreation, drinking Criteria (40 CFR §131.11)
protects designated uses narrative or numeric
Antidegradation Policy (40 CFR §131.12)
3 tiers Tier 1: maintain existing uses Tier 2: protection of high quality
waters (HQWs)
• Tier 2.9: Indiana Outstanding State Resource Waters (OSRWs) & Exceptional Use Waters (EUWs)
• limited degradation Tier 3: ONRWS; no degradation
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What Are Current Antidegradation Policies for Indiana?
1970s – IDEM adopted antidegradation policy for all waters as part of the WQS
1997- IDEM adopted antidegradation implementation procedures for the Great Lakes Basin ONLY as part of GLI initiative
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What Are the GLI Antidegradation Rule Components?
De Minimus Background Concentration Total Loading Capacity Unused Loading Capacity Economic Review Health Risk Review Treatment Technology Analysis Pollution Prevention / Alternatives Analysis Affordability Analysis
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Proposed Approach
Applicable to all surface waters new/increased discharges that result in new/increased
permit limits
Technology based Default antidegradation effluent limits
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How Will the Default Antidegradation Effluent Limits Be Determined?
Determined based on the most stringent of: Water Quality Based Effluent Limit (WQBEL)
calculated using no in-stream dilution OR Best Available Treatment (BAT)
best professional judgment of the state in accordance with 327 IAC 5-5-2 (BPJ/BAT);
Greater protection than current regulations
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Is There a De Minimus?
High Quality Waters: projected effluent limit is equal to or less than the default antidegradation effluent limit
Outstanding State Resource Waters: projected effluent limit is equal to or less than the ambient water quality
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What Are the Requirements for a New/Increased Discharge?
1. Determine that discharge doesn’t qualify as non-significant lowering
2. Satisfactory completion of ‘Necessary & Social/Economic’ tests (Antideg. Application Part 1)
3. If default antideg. limit(s) accepted, proceed to permitting For OSRWs, implement water quality project/pay fee
4. If default antideg. limit(s) not accepted, complete treatment alternatives analysis (Antideg. Application Part 2)
5. If treatment alternatives analysis is acceptable, permitting proceeds with alternate limits
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What Information is Required in Part 1 of the Antidegradation Application?
1. Facility Information
2. Wastewater Characterization
3. The Necessary Demonstration
4. Social/Economic Benefits Demonstration
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When is Part 1 of the Antidegradation Application Considered to be Complete?
Part 1 is complete when IDEM receives a letter from permittee accepting default antideg.
limit(s).
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What Information is Required in Part 2 of the Antidegradation Application?
• Wastewater Treatment/Control Alternatives Analysis
analysis of end-of-pipe treatment methods compare pollutant removal/reduction compare cost to install and operate
evaluation of Alternatives Analysis
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When is Part 2 of the Antidegradation Application Considered to be Complete?
Part 2 is complete when IDEM receives a letter from permittee accepting alternate limit(s).
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How Will the Public Be Notified About the Process?
By information on an IDEM website providing notice of a complete antideg. application.
This information will also be available through electronic notification.
By public noticing of a draft permit after the applicant has successfully completed the requirements for the Necessary and Social/Economic tests AND either accepts default antideg. limits OR successful completion of treatment alternatives analysis.
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Water Quality Project in an OSRW
Applicants choosing to implement a water quality improvement project, must submit the proposed project to IDEM for concurrence approval show adequate demonstration that project will result in an overall
improvement to the water quality in the OSRW demonstrate cooperation with local communities implementation of project will be included in the permit as a
schedule of compliance
Public notice and participation May not use a water quality improvement project that is
being planned/implemented due to other regulatory requirements or the settlement of an enforcement action
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Summary Flow Chart
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Questions??