Federal & State Regulations | Subpart NNNNNN - National Emission Standards for Hazardous Air Pollutants for Chemical Manufacturing Area Sources Chromium Compounds

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.

Table 2 to Subpart NNNNNN of Part 63 - Applicability of General Provisions to Subpart NNNNNN

Citation	Subject	Applies	Explanation
63.1(a)(1), (a)(2), (a)(3), (a)(4), (a)(6), (a)(10)-(a)(12), (b)(1), (b)(3), (c)(1), (c)(2), (c)(5), (e)	Applicability	Yes.
63.1(a)(5), (a)(7)-(a)(9), (b)(2), (c)(3), (c)(4), (d)	Reserved	No.
63.2	Definitions	Yes.
63.3	Units and Abbreviations	Yes.
63.4	Prohibited Activities and Circumvention	Yes.
63.5	Preconstruction Review and Notification Requirements	No.
63.6(a), (b)(1)-(b)(5), (b)(7), (c)(1), (c)(2), (c)(5), (e)(1), (e)(3)(i), (e)(3)(iii)-(e)(3)(ix), (f), (g), (i), (j)	Compliance with Standards and Maintenance Requirements	Yes	The startup, shutdown, and malfunction requirements in §63.6(e)(3) apply at new and existing area sources that choose to comply with §63.11410(k)(2) instead of the requirements in §63.11410(k)(1).
63.6(b)(6), (c)(3), (c)(4), (d), (e)(2), (e)(3)(ii), (h)(3), (h)(5)(iv)	Reserved	No.
63.6(h)(1)-(h)(4), (h)(5)(i)-(h)(5)(iii), (h)(6)-(h)(9)	No	Subpart NNNNNN does not include opacity or visible emissions standards or require a continuous opacity monitoring system.
63.7(a), (e), (f), (g), (h)	Performance Testing Requirements	Yes	Subpart NNNNNN requires a performance test for a new source; a test for an existing source is not required under the conditions specified in §63.11410(i).
63.7(b), (c)	Yes/No	Requirements for notification of performance test and for quality assurance program apply to new area sources but not existing area sources.
63.8(a)(1), (a)(2), (b), (c)(1)-(c)(3), (f)(1)-(5)	Monitoring Requirements	Yes.
63.8(a)(3)	Reserved	No.
63.8(a)(4)	No	Subpart NNNNNN does not require flares.
63.8(c)(4)-(c)(8), (d), (e), (f)(6), (g)	No	Subpart NNNNNN establishes requirements for continuous parameter monitoring systems.
63.9(a), (b)(1), (b)(5), (c), (d), (i), (j)	Notification Requirements	Yes.
63.9(e)	Yes/No	Notification of performance test is required only for new area sources.
63.9(b)(2)	Yes.
63.9(b)(3), (h)(4)	Reserved	No.
63.9(b)(4), (h)(5)	No.
63.9(f), (g)	No	Subpart NNNNNN does not include opacity or visible emissions standards or require a continuous opacity monitoring system or continuous emissions monitoring system.
63.9(h)(1)-(h)(3), (h)(6)	Yes.
63.10(a), (b)(1), (b)(2)(xii), (b)(2)(xiv), (b)(3)	Recordkeeping Requirements	Yes.
63.10(b)(2)(i)-(b)(2)(v)	Yes.	Recordkeeping requirements for startups, shutdowns, and malfunctions apply to new and existing area sources that choose to comply with §63.11410(k)(2).
63.10(b)(2)(vi)-(b)(2)(ix), (c)(1), (c)(5)-(c)(14)	Yes/No	Requirements apply to continuous parameter monitoring systems at new area sources but not existing area sources.
63.10(b)(2)(vii)(A)-(B), (b)(2)(x), (b)(2)(xiii)	No.
63.10(c)(2)-(c)(4), (c)(9)	Reserved	No.
63.10(d)(1), (d)(4), (f)	Reporting Requirements	Yes.
63.10(d)(2)	Yes	Report of performance test results applies to new area sources; the results of a previous test may be submitted for an existing area source under the conditions specified in §63.11410(i).
63.10(d)(3)	No	Subpart NNNNNN does not include opacity or visible emissions limits.
63.10(d)(5)	Yes	Requirements for startup, shutdown, and malfunction reports apply to new and existing area sources that choose to comply with §63.11410(k)(2).
63.10(e)(1)-(e)(2), (e)(4)	No	Subpart NNNNNN does not require a continuous emissions monitoring system or continuous opacity monitoring system.
63.10(e)(3)	Yes/No	Semiannual reporting requirements apply to new area sources but not existing area sources.
63.11	Control Device Requirements	No	Subpart NNNNNN does not require flares.
63.12	State Authorities and Delegations	Yes.
63.13	Addresses	Yes.
63.14	Incorporations by Reference	Yes.
63.15	Availability of Information and Confidentiality	Yes.
63.16	Performance Track Provisions	Yes.

Source: 72 FR 38905, July 16, 2007, unless otherwise noted.

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Subpart NNNNNN - National Emission Standards for Hazardous Air Pollutants for Chemical Manufacturing Area Sources Chromium Compounds

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

Table 2 to Subpart NNNNNN of Part 63 - Applicability of General Provisions to Subpart NNNNNN