Laws & Regulations
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Puerto Rico SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Puerto Rico SIP
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Water Quality Standards Regulations: California
California water quality standards that are EPA-approved or in effect for Clean Water Act purposes.
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How to Apply
How to Apply
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Equivalency Recommendation Process
Equivalency Recommendation Process
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Cement Sector Information
Learn about environmental resources for the cement and concrete sector.
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Concrete Sector Information
Learn about environmental resources for the concrete and cement sector.
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Actions under TSCA Section 5
This provides an overview of and links to the different types of regulatory actions EPA takes under the Toxic Substances Control Act Section 5.
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Montana NPDES Permits
NPDES water permits issued by EPA in Montana.
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Clean Water Act Hazardous Substance Facility Response Plans
The Hazardous Substance Spills Planning Regulations covers the new rulemaking effort under Clean Water Act section 311(j)(5): planning for a worst case discharge of CWA hazardous substances.
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Solvent Substitutions Reported to TRI
Description of how to use TRI data to help identify opportunities for solvent substitution, including an interactive Qlik table with summary information from TRI comments.
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Toolkit Reference Document for Requirements Related to Hazardous Waste Treatment, Storage and Disposal Facilities (TSDFs)
This document was developed to facilitate stakeholders' understanding of RCRAs permitting requirements.
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Texas SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Texas SIP
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Full Text of the Conformity Regulations - 40 CFR part 93
THis page provides links to the general conformity regulations
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EPA Proposes Revisions to the General Conformity Regulations
On this page federal Register announcement of the proposed revisions to the General Conformity Regulations.
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Transportation Conformity Regulations and the General Conformity Regulations
The Transportation Conformity Regulation apply to highways and mass transit.
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Final Fine Particle Pollution De Minimis Threshold Rates for General Conformity Applicability
On this page Federal Register announcement of the Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability.
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Importing Ozone-Depleting Substances
Provides information on rules for importing ozone-depleting substances.
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Modeling Clarification Memorandum for Secondary Pollutants and Nitrogen Dioxide
Memo for using modeling to demonstrate general conformity
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Additional Environmental Protection Agency (EPA) Views on Outer Continental Shelf Decommissioning Activities at the Chevron U.S.A. Inc. Gail and Grace Platforms
This letter provides EPA’s views regarding the applicability of the Outer Continental Shelf (OCS) regulations and requirements under section 328 of the Clean Air Act (CAA or Act) to the decommissioning activities of an offshore drilling platform.
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Survey of Flexible Piping Systems
Learn about flexible piping systems and underground storage tanks (USTs).