United States
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North Carolina's Implementation of Visibility Impact Assessment Requirements for New Major Stationary Sources and Major Modifications Subject to Clean Air Act Prevention of Significant Deterioration Requirements
This document may be of assistance in applying the New Source Review (NSR) air permitting regulations including the Prevention of Significant Deterioration (PSD) requirements. This document is part of the NSR Policy and Guidance Database.
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J.R. Simplot Company's Don Siding Plant and Issues Related to Aggregation, Debottlenecking and Projected Actual Emissions
This document may be of assistance in applying the New Source Review (NSR) air permitting regulations including the Prevention of Significant Deterioration (PSD) requirements. This document is part of the NSR Policy and Guidance Database.
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Review of De minimis Emissions - Sanctions
This document may be of assistance in applying the New Source Review (NSR) air permitting regulations including the Prevention of Significant Deterioration (PSD) requirements.
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Interpreting "Adjacent" for New Source Review and Title V Source Determinations in All Industries Other Than Oil and Gas
This document is part of the NSR and Title V Policy and Guidance Databases
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Good Samaritan Remediation of Abandoned Hardrock Mines Program
An overview of the new Good Samaritan Remediation of Abandoned Hardrock Mines Program
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Maps of States with Water Reuse Regulations or Guidelines
Maps summarizing the states with current state-level regulations or specifications relating to certain water reuse sources and/or uses.
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Decision on Use of ASTM Method D7575
Documents for implementing use of ASTM Method D7575 for measurement of oil and grease in wastewater
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Other Support Documents for CWA Methods
General support documents for the CWA analytical methods program that are not analyte-specific
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Oil and Grease Measurements - Frequent Questions
Questions regarding use of EPA method 1664A for measurement of oil and grease in water
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Effluent Guidelines Plan Support Documents
Miscellaneous support documents for Effluent Guidelines Plan
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Cyanide Measurements: Questions and Answers
Questions and answers about cyanide measurements in Clean Water Act analytical methods (40 CFR Part 136).
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Methods Update Rule Support Documents
Supporting documents for Methods Update Rules (Final May 2021; Final - August 2017); amendments to 40 CFR Part 136
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Other Clean Water Act Test Methods: Biosolids
Methods for analysis of chemical pollutants in biosolids (municipal sewage sludge). These methods are not approved under 40 CFR Part 136, but may be of interest to regulated entities, permitting authorities and the public.
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2016 Effluent Guidelines Plan Documents
Supporting documentation for EPA's Effluent Guidelines Plan
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Aluminum Forming Effluent Guidelines Documents
Support documents for Aluminum Forming Effluent Guidelines regulations
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Soap and Detergent Manufacturing Effluent Guidelines Documents
Support documents for Soap and Detergent Manufacturing Effluent Guidelines regulations (40 CFR Part 417)
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Ferroalloy Manufacturing Effluent Guidelines Documents
Support documents for Ferroalloy Manufacturing Effluent Guidelines and Standards
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Steam Electric Power Generating Effluent Guidelines - 2024 Final Rule
Final rule and support documents for the Steam Electric Power Generating category (40 CFR Part 423).
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Applicability of NSR Requirements to the Henkel Corporation
This document is part of the Title V Policy and Guidance Database.
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Applicability of EPA's PSD Regulations to Floating Seafood Processors
This document is part of the Title V Policy and Guidance Database.