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Hazardous Waste Identification Rule: (HWIR: Waste); Proposed Rule, November 1995
EPA proposed to amend its regulations under the Resource Conservation and Recovery Act (RCRA) by establishing constituent-specific exit levels for low-risk solid wastes that are designated as hazardous because they are listed, or have been mixed with, derived from, or contain listed hazardous wastes. Under this proposal, generators of listed hazardous wastes that meet the self-implementing exit levels would no longer be subject to the hazardous waste management system under Subtitle C of RCRA as listed hazardous wastes. This proposal, commonly referred to as the Hazardous Waste Identification Rule (HWIR), establishes a risk-based "floor" to hazardous waste listings that will encourage pollution prevention, waste minimization, and the development of innovative waste treatment technologies.The Agency also proposed to modify some of the land disposal restriction (LDR) numerical treatment standards listed in Subpart D of 40 CFR Part 268. This notice proposed to cap technology-based treatment standards with the risk-based exit levels which minimize threats to human health and the environment. This notice also took comment on several general approaches and one specific approach for conditional exemptions from subtitle C management. The proposal also contained the Agency's tentative response to a petition for rulemaking submitted by the Chemical Manufacturers Association and the Agency's tentative response to the recommendations made by the Dialogue Committee on Hazardous Waste Identification. This committee was formally chartered in July 1993 in accordance with the Federal Advisory Committee Act (FACA).
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Proposed Rulemaking
- Preamble and proposed regulatory language text (without the tables)
- Preamble tables 1, 2, 3, 4 and
5 (PDF) (6 pp, 215K)
Appendix A to the Preamble
- Tables A-1, A-2, A-3, A-4, and A-5 (PDF) (9 pp, 126K)
Appendix B to the Preamble
- Table B-1: Comparison Between
the Groundwater Modeling Results of 1,000 and 10,000 Years (PDF) (8 pp, 41K)
Appendix C to the Preamble
- Table C-1: Summary of Constituent-Specific Exit Level Development Using Toxicity Benchmarks (PDF) (16 pp, 54K)
- Table C-2: Summary of Constituent-Specific
Exit Level Development Using MCL Numbers (PDF) (16 pp, 57K)
Appendix D to the Preamble
- Table D-1: Comparison Between
the Exit Levels and the Universal Treatment Standards for Purposes of
Minimize Threat (PDF) (6 pp, 35K)
Proposed Appendix X to 40 CFR 261
- Table A: Modeled or Extrapolated Risk-based Exit Levels (PDF) (12 pp, 92K)
- Table B: Quantitation-Based Exit
Levels (PDF) (8 pp, 42K)
Proposed Appendix XI to 40 CFR 261
- Table A: Modeled or Extrapolated Risk-based Conditional Exit Levels (Contingent Management Option 1 Exit Levels) (PDF) (8 pp, 72K)
- Table B: Quantitation-Based Conditional Exit Levels (Contingent Management Option 1 Exit Levels) (PDF) (6 pp, 64K)
- Proposed 268.60 Table 1: Minimize Threat Levels to be added to 40 CFR 268 (PDF) (3 pp, 53K)
- Proposed 268.70 Table 1: Conditional Minimize Threat Levels to be added to 40 CFR 268. (Using Contingent Management Option 1 Levels) (PDF) (3 pp, 55K)