40 CFR 63.621 - Definitions.

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There are 7 Updates appearing in the Federal Register for 40 CFR 63. View below or at eCFR (GPOAccess)
§ 63.621 Definitions.
Terms used in this subpart are defined in the Clean Air Act, in § 63.2, or in this section as follows:
Diammonium and/or monoammonium phosphate process line means any process line manufacturing granular diammonium and/or monoammonium phosphate by reacting ammonia with phosphoric acid which has been derived from or manufactured by reacting phosphate rock and acid.
Equivalent P 2O5 feed means the quantity of phosphorus, expressed as phosphorous pentoxide, fed to the process.
Equivalent P 2O5 stored means the quantity of phosphorus, expressed as phosphorus pentoxide, being cured or stored in the affected facility.
Exceedance means a departure from an indicator range established for monitoring under this subpart, consistent with any averaging period specified for averaging the results of the monitoring.
Fresh granular triple superphosphate means granular triple superphosphate produced within the preceding 72 hours.
Granular triple superphosphate process line means any process line, not including storage buildings, manufacturing granular triple superphosphate by reacting phosphate rock with phosphoric acid.
Granular triple superphosphate storage building means any building curing or storing fresh granular triple superphosphate.
Research and development facility means research or laboratory operations whose primary purpose is to conduct research and development into new processes and products, where the operations are under the close supervision of technically trained personnel, and where the facility is not engaged in the manufacture of products for commercial sale in commerce or other off-site distribution, except in a de minimis manner.
Total fluorides means elemental fluorine and all fluoride compounds, including the HAP hydrogen fluoride, as measured by reference methods specified in 40 CFR part 60, appendix A, Method 13 A or B, or by equivalent or alternative methods approved by the Administrator pursuant to § 63.7(f).

Title 40 published on 2014-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-11-25; vol. 79 # 227 - Tuesday, November 25, 2014
    1. 79 FR 70102 - National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Texas
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      Direct final rule; delegation of authority.
      This rule is effective on January 26, 2015 without further notice, unless EPA receives relevant adverse comment by December 26, 2014. If EPA receives such comment, EPA will publish a timely withdrawal in the Federal Register informing the public that this rule will not take effect.
      40 CFR Part 63

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United States Code

Title 40 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 63 after this date.

  • 2015-01-15; vol. 80 # 10 - Thursday, January 15, 2015
    1. 80 FR 2067 - National Emission Standards for Hazardous Air Pollutants: Secondary Aluminum Production; Extension of Comment Period
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      Supplemental notice of proposed rulemaking; extension of public comment period.
      Comments. The public comment period for the supplemental proposed rule published in the Federal Register on December 8, 2014 (79 FR 72874), is being extended for 15 days to February 6, 2015, in order to provide the public additional time to submit comments and supporting information.
      40 CFR Part 63