40 CFR Part 63, Subpart NNNNNN, Table 1 to Subpart NNNNNN of Part 63 - HAP Emissions Sources

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View PDF at GPO Pt. 63, Subpt. NNNNNN, Table 1
Table 1 to Subpart NNNNNN of Part 63—HAP Emissions Sources
Process Emissions sources
1. Sodium chromate production a. Ball mill used to grind chromite ore.
b. Dryer used to dry chromite ore.
c. Rotary kiln used to roast chromite ore to produce sodium chromate.
d. Secondary rotary kiln used to recycle and refine residues containing chromium compounds.
e. Residue dryer system.
f. Quench tanks.
2. Sodium dichromate production a. Stack on the electrolytic cell system used to produce sodium dichromate.
b. Sodium dichromate crystallization unit.
c. Sodium dichromate drying unit.
3. Chromic acid production a. Electrolytic cell system used to produce chromic acid.
b. Melter used to produce chromic acid.
c. Chromic acid crystallization unit.
d. Chromic acid dryer.
4. Chromic oxide production a. Primary rotary roasting kiln used to produce chromic oxide.
b. Chromic oxide filter.
c. Chromic oxide dryer.
d. Chromic oxide grinding unit.
e. Chromic oxide storage vessel.
f. Secondary rotary roasting kiln.
g. Quench tanks.
5. Chromium hydrate production a. Furnace used to produce chromium hydrate.
b. Chromium hydrate grinding unit.
As required in § 63.11411(a), you must comply with the requirements of the General Provisions (40 CFR part 63, subpart A) as shown in the following table.

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
      GPO FDSys XML | Text
      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

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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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.

  • 2014-12-12; vol. 79 # 239 - Friday, December 12, 2014
    1. 79 FR 73872 - Phosphoric Acid Manufacturing and Phosphate Fertilizer Production RTR and Standards of Performance for Phosphate Processing; Extension of Comment Period
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      Notice of proposed rulemaking; extension of public comment period.
      Comments. The public comment period for the proposed rule published in the Federal Register on November 7, 2014, (79 FR 66512) is being extended for 30 days to January 21, 2015.
      40 CFR Parts 60 and 63