OMB is
withholding approval at this time. Prior to publication of the
final rule, the agency should provide a summary of any comments
related to the information collection and their response, including
any changes made to the ICR as a result of comments. In addition,
the agency must enter the correct burden estimates. This action has
no effect on any current approvals.
Inventory as of this Action
Requested
Previously Approved
36 Months From Approved
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0
0
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The NESHAP (or MACT rule) for Primary
Aluminum Reduction Plants were promulgated on October 7, 1997 (62
FR 52407) and amended on November 2, 2005 (70 FR 66285) as 40 CFR
part 63, subpart LL (subpart LL). The rule is applicable to
facilities with affected sources associated with the production of
aluminum by electrolytic reduction. The purpose of this information
collection request is to document the expected impacts of proposed
changes to subpart LL that are being developed as part of the risk
and technology review process of the current subpart LL. The
standards promulgated in 1997 and 2005 apply to emissions of
hydrogen fluoride (HF), measured using total fluorides (TF) as a
surrogate, from all potlines and anode bake furnaces, and
polycyclic organic matter (POM, measured as methylene chloride
extractables) from Soderberg potlines, anode bake furnaces, paste
production plants and pitch storage tanks associated with primary
aluminum production. Affected sources under subpart LL are each
potline, each anode bake furnace (except for one that is located at
a facility that only produces anodes for use off-site), each paste
production plant, and each new pitch storage tank. The EPA is
required to review technology-based standards and to revise them
"as necessary (taking into account developments in practices,
processes, and control technologies)" no less frequently than every
8 years, under CAA section 112(d)(6). The EPA is also required to
promulgate standards, if necessary, to provide an ample margin of
safety to protect public health, under CAA section 112(f). Compared
to existing subpart LL, the proposed changes would establish
standards for emissions of POM from prebake potlines, reduce the
POM emission limit for Soderberg potlines, establish a limit for
carbonyl sulfide (COS) emissions from all potlines, and establish a
design standard for emission controls applicable to existing pitch
storage tanks. In addition, the proposed rule would eliminate the
startup, shutdown and malfunction (SSM) exemption, remove the SSM
plan requirement, add provisions to provide an affirmative defense
against civil penalties for exceedances of emission standards
caused by malfunctions, and add a requirement for electronic
submittal of performance tests.
On behalf of this Federal agency, I certify that
the collection of information encompassed by this request complies
with 5 CFR 1320.9 and the related provisions of 5 CFR
1320.8(b)(3).
The following is a summary of the topics, regarding
the proposed collection of information, that the certification
covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a
benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control
number;
If you are unable to certify compliance with any of
these provisions, identify the item by leaving the box unchecked
and explain the reason in the Supporting Statement.
2447ss01.docx
Primary Aluminum Reduction Plants (40 CFR part 63, subpart LL)