[Federal Register Volume 83, Number 170 (Friday, August 31, 2018)]
[Rules and Regulations]
[Pages 44485-44498]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-18853]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R05-OAR-2007-1092; FRL-9982-97--Region 5]


Air Plan Approval; Michigan; Minor New Source Review

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is approving certain 
changes to the Michigan State Implementation Plan (SIP). This action 
relates to changes to the Permit To Install (PTI) requirements of Part 
2 of the Michigan Administrative Code (Part 2 Rules). Changes to the 
Part 2 Rules were submitted on November 12, 1993; May 16, 1996; April 
3, 1998; September 2, 2003; March 24, 2009; and February 28, 2017.

DATES: This final rule is effective on October 1, 2018.

ADDRESSES: EPA has established a docket for this action under Docket ID 
No. EPA-R05-OAR-2007-1092. All documents in the docket are listed on 
the www.regulations.gov website. Although listed in the index, some 
information is not publicly available, i.e., Confidential Business 
Information (CBI) or other information whose disclosure is restricted 
by statute. Certain other material, such as copyrighted material, is 
not placed on the internet and will be publicly available only in hard 
copy form. Publicly available docket materials are available either 
through www.regulations.gov or at the Environmental Protection Agency, 
Region 5, Air and Radiation Division, 77 West Jackson Boulevard, 
Chicago, Illinois 60604. This facility is open from 8:30 a.m. to 4:30 
p.m., Monday through Friday, excluding Federal holidays. We recommend 
that you telephone Rachel Rineheart, Environmental Engineer, at (312) 
886-7017 before visiting the Region 5 office.

FOR FURTHER INFORMATION CONTACT: Rachel Rineheart, Environmental 
Engineer, Air Permits Section, Air Programs Branch (AR-18J), 
Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, 
Chicago, Illinois 60604, (312) 886-7017, <a href="/cdn-cgi/l/email-protection#285a41464d404d495a5c065a494b404d44684d5849064f475e"><span class="__cf_email__" data-cfemail="b1c3d8dfd4d9d4d0c3c59fc3d0d2d9d4ddf1d4c1d09fd6dec7">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION: Throughout this document whenever ``we,'' 
``us,'' or ``our'' is used, we mean EPA. This supplementary information 
section is arranged as follows:

I. What is the background of these SIP submissions?
II. What is our response to comments received on the proposed 
rulemaking?
III. What action is EPA taking?
IV. Incorporation by Reference.
V. Statutory and Executive Order Reviews.

I. What is the background of these SIP submissions?

A. What state submissions does this rulemaking address?

    The State of Michigan's minor source PTI rules are contained in 
Part 2 of the Michigan Administrative Code. EPA last approved changes 
to the Part 2 rules in 1982. The Michigan Department of Environmental 
Quality (MDEQ) has submitted several Part 2 revision packages since 
that time; however, EPA has not taken a final action on any of the 
submittals. The following table provides a summary of the various state 
submittals with the most recent version of each section of the Michigan 
Rule highlighted in bold.

----------------------------------------------------------------------------------------------------------------
                                                     State
                   Submittal                    effective date  Submittal date      Rules submitted 336.1xxx
----------------------------------------------------------------------------------------------------------------
1.............................................      04/20/1989      11/12/1993  240, 241.
                                               ----------------                ---------------------------------
                                                    04/17/1992  ..............  201, 283.
                                               ----------------                ---------------------------------
                                                    11/18/1993  ..............  278, 279, 280, 281, 282, 284,
                                                                                 285, 286, 287, 288, 289, 290.
----------------------------------------------------------------------------------------------------------------
2.............................................      07/26/1995      05/16/1996  201, 205, 208 (rescinded), 209,
                                                                                 219, 278, 279, 280, 281, 282,
                                                                                 283, 284, 285, 286, 287, 288,
                                                                                 289, 290.
3.............................................      12/12/1996      04/03/1998  201a, 205.
4.............................................      06/13/1997      08/20/1998  278, 283, 284, 285, 286, 287,
                                                                                 290.
5.............................................      07/01/2003      09/02/2003  201, 201a, 202, 203, 204, 205,
                                                                                 206, 207, 212, 216, 219, 240,
                                                                                 241, 278, 278a, 279
                                                                                 (rescinded), 281, 282, 284,
                                                                                 285, 287, 289, 299.
6.............................................      06/20/2008      03/24/2009  201, 202, 205, 207, 219, 240,
                                                                                 241, 278, 281, 284, 285, 288,
                                                                                 299.
7.............................................      12/20/2016       2/21/2017  278a, 280, 281, 282, 283, 284,
                                                                                 285, 286, 287, 288, 289, 290.
----------------------------------------------------------------------------------------------------------------

    EPA published a proposed approval of all changes, except the public 
notice procedures in Michigan R. 336.1205, on August 15, 2017 (82 FR 
38651), with a 30-day public comment period. EPA reopened the comment 
period twice due to missing files in the docket on regulations.gov. The 
comment period was reopened for an additional 30 days on November 2, 
2017 (82 FR 50853), and an additional 15 days on January 9, 2018 (83 FR 
1003). EPA is taking no action on Michigan R. 336.1205 at this time.

B. Why did the state make these SIP submissions?

    Section 110(a)(2)(C) of Clean Air Act (the Act) requires that each 
SIP include a program to provide for the regulation of construction and 
modification of stationary sources as necessary to assure that the 
National Ambient Air Quality Standards (NAAQS) are achieved. Specific 
elements for an approvable construction permitting plan are found in 
the implementing regulations at 40 CFR part 51, subpart I--Review of 
New Sources and Modifications. Requirements relevant to minor 
construction programs are 40 CFR 51.160-51.164. EPA regulations have 
few specific criteria for state minor new source review (NSR) programs. 
Generally, state programs must set forth legally enforceable procedures 
that allow the state to prevent any planned construction activity that 
would result in a violation of the state's SIP or a national standard.
    The revisions to Part 2 submitted by MDEQ are largely provisions 
that strengthen the already approved minor NSR program adding greater 
detail with respect to applicability, required application material, 
and processing of applications; however, the revisions do include 
changes to waiver provisions

[[Page 44486]]

and the addition of several categories of exemptions from the 
requirement to obtain a PTI.

II. What is our response to comments received on the proposed 
rulemaking?

    EPA received several comments during the public comment process. 
EPA received four anonymous comments that were unrelated to the action, 
and we will not be addressing those comments. EPA received adverse 
comment on the proposed approval from the Sierra Club, the Great Lakes 
Environmental Law Center, the Center for Biological Diversity, and the 
Environmental Law & Policy Center. EPA received a letter from the 
Environmental Law & Policy Center dated September 14, 2017, and a 
letter from the Sierra Club, Great Lakes Environmental Law Center, and 
the Center for Biological Diversity dated September 14, 2017, during 
the original public comment period. Sierra Club and the Great Lakes 
Environmental Law Center provided additional comment during the first 
reopening in a letter dated December 4, 2017. Sierra Club, the Great 
Lakes Environmental Law Center, and the Center for Biological Diversity 
provided additional comments during the second reopening in a letter 
dated January 24, 2018. A summary of the comments received and EPA's 
response follow.

A. Michigan R. 336.1201a General PTIs

    Michigan R. 336.1201a gives the MDEQ the ability to create general 
PTIs. A general permit is a permit document that contains standardized 
requirements that multiple stationary sources can use. It may cover 
categories of emission units or stationary sources that are similar in 
nature. The purpose of a general permit is to ensure the protection of 
air quality while simplifying the permit process for similar minor 
sources. General permits allow the permitting authority to notify the 
public through one notice that it intends to apply those requirements 
to any eligible source that seeks coverage under the permit in the 
future. This minimizes the burden on the reviewing authority's 
resources by eliminating the need to issue separate permits for each 
individual minor source within the source type or category covered by 
the general permit. Use of a general permit also decreases the time 
required for an individual minor source to obtain a preconstruction 
permit because the application process is standardized.
    Michigan R. 336.1201a allows MDEQ to issue general PTIs for 
categories of similar emission units or stationary sources. The rule 
requires the general permits to contain limitations as necessary to 
assure compliance with applicable requirements, and that limitations on 
potential to emit be enforceable as a practical matter. The general 
permits must also identify the criteria by which a stationary source or 
emission unit may qualify for the permit. Finally, the rule requires 
MDEQ to provide for public notice of the general permit.
    Comment 1: While EPA's Title V permitting rules provide for 
issuance of general operating permits, the concept of a general 
construction permit is not consistent with the requirements of Section 
110(a)(2)(C) of the Act or 40 CFR 51.160-51.164.
    EPA Response: EPA disagrees that the lack of a specific allowance 
for general permits under the permit program requirements of section 
110(a)(2)(C) of the Act precludes the use of general permits for 
construction as there is no provision that specifically disallows them. 
In fact, the language in the Act concerning non-major activities simply 
requires ``regulation of the modification and construction of any 
stationary source within the areas covered by the plan as necessary to 
assure that national ambient air quality standards are achieved.'' The 
Act and the implementing regulations at 40 CFR 51.160 are structured to 
allow the implementing authority flexibility in designing a minor 
source program that meets the authority's individual needs while 
assuring protection of ambient air. EPA has a well-established, 
longstanding position that the use of general permits for construction 
of minor sources is appropriate under the Act. The January 25, 1995, 
memorandum ``Options for Limiting Potential to Emit (PTE) of a 
Stationary Source Under Section 112 and Title V of the Clean Air Act,'' 
the January 25, 1995 memorandum, ``Guidance an Enforceability 
Requirements for Limiting Potential to Emit through SIP and Sec.  112 
Rules,'' and the April 14, 1998, memorandum, ``Potential to Emit (PTE) 
Guidance for Specific Source Categories,'' all endorse the use of a 
general permit program approved into the SIP pursuant to section 
110(a)(2)(C) of the Act as a means of effectively establishing 
limitations on the potential to emit of stationary sources. EPA allows 
for the issuance of general permits to minor sources under its own 
Federal Minor NSR Program in Indian Country at 40 CFR 49.156.
    Comment 2: The Michigan Rules do not define ``similar stationary 
sources or emissions units.'' There is no requirement in the rules 
that, to be similar, source or emission units must have similar 
emissions and stack parameters. Sources with different stack parameters 
and emission rates, even though similar sources, could have 
significantly different impact on air pollutant concentrations. 
Furthermore, no definition of ``similar source'' can adequately address 
neighboring sources of air pollution which may cause ambient pollution 
concentrations at or near the levels of a NAAQS.
    EPA Response: We disagree that there is a need to define ``similar 
stationary sources or emissions units'' in this rule. The identified 
terms have their common meaning in the context of the rule. In the case 
of general permits, defining the scope of the stationary source and/or 
emissions units covered by a particular general permit should be done 
when establishing the terms of the general permit. All interested 
parties will have the opportunity to provide input on the 
appropriateness of the scope of a particular general permit during the 
public comment period for that permit. The appropriate time to comment 
is during the public comment period for a particular general permit.
    Comment 3: A general permit would not ensure that a specific new or 
modified source would be prohibited from construction if it would 
interfere with attainment or maintenance of the NAAQS or interfere with 
the control strategy. The impact of a source's emissions on air 
pollutant concentrations is dependent on a myriad of factors including 
topography, other buildings in the vicinity, background pollutant 
concentrations, and neighboring sources of pollution as well as stack 
and plume characteristics.
    EPA Response: We disagree. Michigan R. 336.1207, which requires 
MDEQ to deny an application that would interfere with the attainment or 
maintenance of a NAAQS, would apply to any general permit issued by 
MDEQ. There is still an application process for any source wanting 
coverage under a general permit, and MDEQ does have the authority to 
deny coverage under a general permit to any applicant. The potential 
air quality impacts of a general permit should be considered during the 
development of each general permit. Concerns regarding the adequacy of 
permit terms or application requirements concerning potential impacts 
on air quality are more appropriately raised during the public comment 
period for each general permit developed by MDEQ.
    Comment 4: The concept of a general construction (or operating) 
permit is that one permit can be issued for a source type, and similar 
sources can request and be granted approval to construct and/or operate 
under that

[[Page 44487]]

permit without having to apply for a new construction permit, thereby 
avoiding all of the requirements that are part of the application 
process including public notice and opportunity for comment.
    EPA Response: A source must apply for coverage under a general 
permit, and each general permit must be made available for public 
comment. EPA does not agree that the general permitting process would 
allow a source to avoid any requirements of the application process. As 
noted above, EPA has a well-established position in support of general 
permits for construction and has determined that the notice and comment 
required in the establishment of each general permit meets the public 
notice requirements of 40 CFR 51.161.

B. Michigan R. 336.1202 Waivers of Approval

    Michigan R. 336.1202 provides the MDEQ with the authority to grant 
a waiver from the requirement to obtain a permit prior to commencing 
construction in certain limited circumstances. The PSD provisions of 
the Act prohibit commencement of construction without first obtaining 
the required permit authorizing construction; however, the requirement 
only applies to major sources, and no such restriction is specified 
under the minor NSR program requirements set forth in 40 CFR 51.160. In 
addition, EPA has made determinations which further support that 
limited construction may begin before a permit is issued for minor 
sources. For example, EPA's October 10, 1978, memorandum from Edward E. 
Reich to Thomas W. Devine in Region 1 discusses limited preconstruction 
activities allowed at a site with both PSD and non-PSD sources. This 
memo states that construction may begin on PSD-exempt projects before 
the permit is issued. EPA has established its position that limited 
waivers are acceptable for true minor sources in previous rulemaking. 
(See 68 FR 2217 and 73 FR 12893.) As stated previously, the minor NSR 
provisions at 40 CFR 51.160 require state programs to determine if 
activities would violate an applicable SIP or national standard and to 
prevent construction of an activity that would violate an applicable 
SIP provision or national standard. Michigan R 336.1202(1) requires an 
application for a waiver be submitted to MDEQ and requires MDEQ to act 
on the request within 30 days. Construction may not proceed unless the 
waiver is granted. The rule also indicates that the waiver does not 
guarantee approval of the required PTI and any construction activity 
would be at the owner/operator's risk. Michigan R. 336.1202(2) limits 
the waiver to minor construction activities (i.e., activities not 
subject to prevention of significant deterioration or nonattainment new 
source review requirements), activities that are not considered 
construction or reconstruction under a National Emission Standard for 
Hazardous Air Pollutants of 40 CFR part 63, and activities that are not 
considered construction or modification under a New Source Performance 
Standard of 40 CFR part 61. It is also important to note that the 
approved Part 2 rules currently included in the Michigan SIP already 
have an approved waiver provision. The currently approved waiver 
provision is much broader in scope, and the changes that EPA is 
approving here narrow that scope bringing the MDEQ provisions in line 
with other state programs.
    Comment 1: The commenters object to EPA's approval of waiver 
provisions in general and argue that all of EPA's arguments for 
approval of waiver provisions are flawed and do not in any way justify 
approval.
    EPA Response: EPA has outlined its position on waivers for minor 
source construction in previous rulemakings, as noted above, and will 
not be revisiting this established policy in this rulemaking. EPA finds 
that Michigan R. 336.1202 meets the criteria for approval outlined in 
those rulemakings. Michigan's rule requires application for a waiver 
and requires MDEQ to act upon the application for a waiver within 30 
days. The waiver provision is limited to non-major construction 
activities and the applicant must show a delay in construction would 
result in hardship. Finally, the rule makes it clear that the source 
may not operate until such time a final permit is issued and that 
granting a waiver does not obligate MDEQ to issue a final permit.
    Comment 2: Michigan R. 336.1202 conflicts with EPA regulations 
governing minor source review because it would allow a source to 
circumvent the public participation requirements until after a source 
or modification is constructed.
    EPA Response: EPA's position on limited waiver provisions in minor 
NSR programs has already been established. As discussed above nothing 
in 40 CFR 51.161 requires that the required public notice occur prior 
to the commencement of construction activities for minor sources. MDEQ 
must still adhere to the SIP approved public notice requirements when 
issuing a permit.
    Comment 3: The Michigan waiver provision conflicts with EPA's 
regulations governing major source review because it could apply to 
modified major sources that would otherwise be subject to PSD or 
nonattainment NSR. Although the Michigan waiver provision states that 
it does not apply to ``any activity'' that is subject to major source 
permitting requirements, the definition of ``activity'' under this rule 
is not consistent with the EPA's aggregation policy. By defining 
``activity'' as the ``concurrent and related installation, 
construction, relocation, or modification of any process or process 
equipment,'' MDEQ's definition is inconsistent with the much broader 
policy that EPA has laid out in several policy memos in deciding when 
projects should be aggregated. Importantly, EPA policy does not require 
that projects be concurrently constructed to justify two or more 
projects being related. There are also numerous other factors to take 
into account to determine if two or more projects are related.
    EPA Response: Neither the Act nor current EPA rules specifically 
addresses the basis upon which to aggregate changes for applicability 
purposes. Instead, EPA has developed its aggregation policy through 
statutory and regulatory interpretation and applicability 
determinations. Current EPA policy is generally guided by our analysis 
in memos such as the June 17, 1993 ``Applicability of New Source Review 
Circumvention Guidance to 3M-Maplewood, Minnesota.'' In this memo, EPA 
outlines criteria that a permitting authority might consider in 
determining which activities should be aggregated. The guidance 
suggests that a permitting authority should consider the timing of 
projects, whether or not changes are technically related or dependent 
upon one another, and any economic relationship between activities. EPA 
policy directs permitting authorities to evaluate the timing and 
relatedness of activities for aggregation. Since MDEQ has not defined 
either ``concurrent'' or ``related'', we believe the language can be 
interpreted broadly enough to be consistent with EPA policy. 
Furthermore, the definition of activity here has no bearing on the 
definition of project under the state's PSD and major non-attainment 
NSR program. Applicability for PSD is defined in Michigan's Part 18 
rules and applicability for major non-attainment NSR is defined in 
Michigan's Part 19 rules, and is independent of any applicability 
criteria established in Part 2. If an activity is subject to the Part 
18 or Part 19 requirements either by itself or as part of a larger 
project, it would be excluded from use of the waiver provisions.

[[Page 44488]]

    Comment 4: The waiver provision also conflicts with EPA regulations 
governing new major source review because it could apply to a source 
that ultimately requests limits on emissions to avoid major source or 
major modification permitting requirements.
    EPA Response: EPA disagrees with the commenter's conclusions. The 
rule prohibits use of the waiver by sources subject to the state's 
major construction permitting programs. Any source that intends to take 
synthetic minor restrictions to avoid major source permitting 
requirements is major until a permit with enforceable restrictions is 
issued, and would be disqualified from the use of the waiver. MDEQ has 
made their position on this issue clear as well. In a public hearing 
report dated February 20, 2003, which is included in attachment F of 
the September 2003 submittal, MDEQ outlines how their rules would 
prevent the use of restrictions that are not part of an enforceable 
permit or order, thus limiting the waiver to true minors.
    Comment 5: The Michigan waiver provision does not meet the 
requirements of the Act or 40 CFR 51.160(a) because it does not require 
the source to submit its plans and specifications for approval before 
MDEQ must act on a request for a waiver. Michigan R. 336.1202 indicates 
that a source's ``pertinent plans and specifications'' can be submitted 
after a waiver is granted and such plans are only required ``as soon as 
is reasonably practical.'' Furthermore, MDEQ's rule is not comparable 
to previously approved waiver provisions in Idaho and Wisconsin because 
both programs require a complete application for construction with an 
application for a waiver.
    EPA Response: While the approvals in Idaho and Wisconsin note the 
submittal of a complete application for construction as additional 
safeguards, EPA disagrees that the submittal of a complete application 
for construction was established as a criterion for approval. Michigan 
R. 336.1202 does require application to MDEQ for a waiver. EPA does not 
agree that a complete application for construction is necessary, and 
the commenter has not provided evidence that MDEQ does not require 
adequate information with the waiver application. A check of MDEQ 
policy does in fact show that a complete application is required with 
an application for a waiver. Section 9-2 of MDEQ's ``Permit to Install 
Workbook'' states that a PTI application must be submitted ``before, or 
with, a construction waiver request.''
    Comment 6: Michigan R. 336.1202 conflicts with the Act and EPA 
regulations governing minor source review because it essentially 
amounts to a director's discretion provision to provide new exemptions 
from the substantive requirements of the permit to install 
requirements. That is because the source does not have to submit 
relevant information about the new or modified source to determine if 
it would interfere with the control strategy or cause or contribute to 
a NAAQS violation until after construction has begun, the new or 
modified source's proposed location and impact on air quality would not 
have to be disclosed to the public until after construction has begun, 
and if the source was planning on requesting enforceable emission 
limitations to avoid major source permitting requirements, no review by 
the MDEQ, the public, or EPA would be done until after construction has 
begun.
    EPA Response: As discussed above, a complete application for a PTI 
is required with an application for a waiver. Because any source 
seeking synthetic minor or netting limitations is considered major 
until such time as a permit with practically enforceable limitations is 
issued, the rule would only allow a waiver for true minor actions. 
Finally, the rule prohibits operation until a final permit is issued, 
and that permit must meet the public notice procedures of the approved 
SIP.

C. Michigan R. 336.1209 Use of Old Permits To Limit Potential to Emit

    Michigan R. 336.1209 allows a source to rely on a permit to install 
or a permit to operate issued by MDEQ before May 6, 1980 (prior to 
approval in the SIP), or issued by Wayne county before a delegation of 
authority to Wayne county pursuant to state statute for the purposes of 
applicability to Michigan R. 336.1210. Michigan R. 336.1210 is the 
state's Title V operating permit program.
    Comment 1: This rule could allow a source to avoid the state's 
Title V requirements by relying on emission limits in permits that the 
state or Wayne County no longer have the ability to enforce due to the 
permit being based on rules that are extremely out of date or no longer 
on the books.
    EPA Response: Changes to rules do not invalidate permits already 
issued. If the permits issued were non-expiring, they are still legally 
binding regardless of changes to the state's permitting rules. EPA sees 
this provision as reaffirming the state's authority to enforce these 
permits.
    Comment 2: The provisions of Michigan Rule 336.1209 that allow 
sources to rely on pre-1980 permits and permit limits may result in 
permits that are inconsistent with EPA's criteria for ``practically 
enforceable'' limits. Those criteria include the requirement that the 
permit expressing the emission limits must identify the methods for 
determining compliance with the limit and require monitoring, 
recordkeeping and reporting. The commenter notes that neither Michigan 
R. 336.1209 or Michigan R. 336.1205(1)(a) specifically require that the 
permit to be used to avoid Title V requirements include these 
compliance assurance requirements.
    EPA Response: Michigan R. 336.1209 requires that the permit contain 
production and/or operational limits consistent with the requirements 
of Michigan R. 336.1205(1)(a). Michigan R. 336.1205(1)(a) requires that 
limits be enforceable as a practical matter. While Michigan R. 
336.1205(1)(a) does provide some detail regarding the types of limits 
that could be used and the timeframes for the limits, EPA does not see 
the language in this rule as defining ``enforceable as a practical 
matter'' and sees nothing in the language that would be inconsistent 
with EPA policy on what makes a limit enforceable as a practical 
matter. Furthermore, the commenter has not described how avoiding an 
operating permit requirement would impact the state's preconstruction 
permitting program.
    Comment 3: EPA has established certain criteria that need to be met 
in order to establish enforceable limits on potential to emit, which 
include among other things EPA and public notice and the opportunity to 
comment on a potential to emit limit. (See 1/25/95 EPA Memo with 
Subject ``Options for Limiting Potential to Emit (PTE) of a Stationary 
Source Under Section 112 and Title V of the Clean Air Act (Act)'' at 3-
4.)
    EPA Response: The reference cited by the commenters is a discussion 
regarding the criteria for SIP approval of a federally enforceable 
state operating permit program (FESOP). As noted in the referenced 
memo, a criterion for approval of a FESOP program is that permits ``be 
issued in a process that provides for review and an opportunity for 
comment by the public and by EPA.'' Michigan R. 336.1209 is not a FESOP 
program, and the criteria for FESOP approval is not an appropriate 
measure for this rule.
    Comment 4: To a large extent, EPA's criteria for creating 
practically enforceable emission limits to avoid major source 
permitting was developed pursuant to the 1987 Court decision United 
States v. Louisiana Pacific, 682 F. Supp. 112(D. Colo. 1987), 682 F.

[[Page 44489]]

Supp. 1141 (D. Colo. 1988). By allowing Michigan sources to rely on 
permits issued well before this Court decision and before May 6, 1980, 
it seems highly doubtful that the Michigan or Wayne County permits upon 
which a source might rely to avoid Title V permitting meet EPA's more 
recent criteria for creating practically enforceable limits on 
potential to emit. Until it is clear that EPA has undertaken a review 
of these older programs and verified as such, as well as verified that 
the state or Wayne County still has authority to enforce such permits, 
EPA must not approve Michigan R. 336.1209 as part of the Michigan SIP.
    EPA Response: The commenter seems to suggest that any limit 
predating the United States v. Louisiana Pacific decision and EPA's 
subsequent guidance could not be enforceable as a practical matter. 
Minor permit programs had been a part of state SIPs for nearly a decade 
before the decision and EPA's subsequent guidance. The fact that the 
EPA and the court found the Louisiana Pacific permit deficient is not 
evidence that all prior permits were somehow deficient. The rule 
requires that the old permit contain limits that are enforceable as a 
practical matter and that the permittee continue to maintain records, 
conduct monitoring, and submit reports to show that the source is in 
compliance with those terms.

D. Michigan R. 336.1278 Exclusion From Exemption and Michigan R. 
336.1278a Scope of Permit Exemptions

    Michigan R. 336.1278 and 336.1278a work together to define the 
scope of the permit exemptions in Michigan R. 336.1280 through 336.1290 
and to ensure that sources choosing to forgo a case-by-case permitting 
decision collect and maintain data necessary to demonstrate that any 
construction related activities qualified for the exemptions. Michigan 
R. 336.1278 excludes major activities subject to either the PSD or 
major non-attainment programs from using the exemptions. This rule also 
affirms that the exemptions only apply to the requirement to obtain a 
construction permit and that all other applicable requirements 
including existing permit limitations must be met. Michigan R. 
336.1278a requires sources using an exemption to maintain records that 
demonstrate the applicability of the exemption including information 
such as a description of equipment installed, date of installation, 
identification of the specific exemption being applied and an analysis 
that the exemption exclusions in Michigan R. 336.1278 do not apply.
    Comment 1: Michigan's PTI regulations are an umbrella permit 
program that apply to new major sources and major modifications as well 
as minor sources and modifications. Many of the PTI exemptions, 
particularly the broadly-worded exemptions in Michigan R. 336.1285, 
could allow otherwise major modifications to escape review, despite the 
limitations in Michigan R. 336.1278 and 336.1278a. Thus, EPA is not 
justified in relying on Michigan R. 336.1278 and R. 336.1278a for 
assurance that all of the PTI exemptions in Michigan R. 336.1280 
through Michigan R. 336.1290 will not allow a project to escape major 
source permitting.
    EPA Response: EPA agrees with the commenter that the provisions in 
Part 2 apply to both minor sources and major modifications. EPA 
disagrees that the PTI regulations exemption would allow major 
modifications to escape review. The commenter is correct to a certain 
extent that the provisions in Part 2 apply to both major and minor 
construction activities. For example, the Part 2 rules do address the 
general requirement to obtain a permit, public notice procedures, and 
grounds for permit denial of all construction permit programs. However, 
the Part 2 rules do not define the applicability criteria for the 
state's PSD and major non-attainment NSR programs. The state's PSD 
rules in Part 18 and major non-attainment NSR rules in Part 19 define 
the specific requirements, including applicability, of those major 
source construction permitting programs. Michigan R. 336.1278 prohibits 
the use of the exemptions if the activity would be subject to PSD or 
major non-attainment permitting requirements. The applicability 
procedures in Part 18 and Part 19 are independently applicable, and 
nothing in Part 2 of the Michigan Rules would alter them; therefore, 
EPA finds that the exclusion in Michigan R. 336.1278 is adequate.
    Comment 2: The specific provisions of Michigan R. 336.1278 fail to 
ensure that projects that should be required to obtain a PSD or major 
non-attainment permit will not be exempt from a PTI pursuant to the 
exemptions in Michigan R. 336.1280 through R. 336.1290 because Michigan 
R. 336.1278(1) does not use the same terms that are used in the PSD or 
non-attainment NSR regulations for identifying what changes may trigger 
NSR review. Specifically, the PSD and nonattainment NSR rules use the 
term ``project'' which is defined as ``a physical change or change in 
the method of operation of an existing major stationary source'' and 
Michigan R. 336.1278 uses the term ``activity.'' Michigan R. 
336.1278(1)(b) defines ``activity'' as ``the concurrent and related 
installation, construction, reconstruction, relocation, or modification 
of any process or process equipment.'' It does not appear that this 
definition encompasses changes in the method of operation of any 
process or process equipment. The commenter also asserts that the 
definition of ``activity'' is inconsistent with EPA's aggregation 
policy because EPA policy does not require that changes be concurrent.
    EPA Response: The MDEQ definition of ``activity'' includes 
``modification of any process or process equipment.'' MDEQ defines 
``modify'' in Michigan R. 336.1113(e). The definition of ``modify'' 
includes physical changes in, or changes in the method of operation of 
an existing process or process equipment. MDEQ has not excluded changes 
in the method of operation as suggested by the commenter. The commenter 
made a similar comment with respect to aggregation in their comments on 
the waiver provision at Michigan R. 336.1202. See EPA's response to 
Comment 3 in Section II.B of this action.
    Comment 3: While Michigan R. 336.1278a(1)(c) does require an 
analysis demonstrating that Michigan R. 336.1278 does not apply to the 
process or process equipment, the rule does not clearly require such 
analysis for modification to process equipment.
    EPA Response: EPA disagrees with this comment. It is clear that the 
``exempt process or exempt process equipment'' in Michigan R. 336.1278a 
is referencing the exempt activity as defined by each of the categories 
of exemptions in Michigan R. 336.1280 through 336.1290. If the exempt 
process or exempt process equipment as defined by a specific exemption 
would include modifications to existing equipment, the facility 
applying the exemption would be required to maintain an analysis that 
the exemption applies to the modification of equipment.
    Comment 4: Michigan R. 336.1278a(1)(c) does not specify how the 
analysis that Michigan R. 336.1278 does not apply should be done. Given 
that the language and terms of Michigan R. 336.1278(1) are not 
consistent with the terms and applicability procedures of the major NSR 
rules, it is imperative that the recordkeeping rule at Michigan R. 
336.1278a(1)(c) specify the applicability procedures in the major PSD 
and non-attainment NSR rules. Given the complex procedures, how they 
differ for new emissions units versus existing emissions units, and the 
fact that Michigan R. 336.1278(1) uses different terminology than the 
major

[[Page 44490]]

source permitting rules, this is a major omission.
    EPA Response: As explained previously, nothing in the Part 2 rules 
impacts applicability under the state's major source permitting rules 
in Part 18 and Part 19. EPA believes that the expectation of Michigan 
R. 336.1278a(1)(c) is clear in that it requires a source applying any 
of the exemptions to maintain an analysis and records that support that 
(1) the project was not major pursuant to the requirements of the 
approved Part 18 or Part 19 programs, and (2) that the process or 
process equipment in question, meets the applicability criteria of 
whichever specific exemption they are claiming as defined by that 
exemption. Michigan very clearly states this in their May 15, 2012, 
letter from Dan Wyant to Susan Hedman. In its explanation of how these 
rules work to limit the scope of the exemptions, MDEQ states ``A source 
must, therefore, first determine if it is excluded from exemption under 
Rule 278 before evaluating whether it is eligible for one of the 
specific exemptions in Rules 280 through 290.'' In other words, major 
source permitting applicability must be determined before consideration 
of the Part 2 exemptions.
    Comment 5: Michigan R. 336.1278a does not clearly require an 
analysis demonstrating that the specific exemption being used applies 
to the activity. Michigan R. 336.1278a must require an analysis 
demonstrating the applicability of an exemption, not just a description 
of the exempt process and an identification of the exemption being 
applied as suggested by Michigan R. 336.1278a(1)(a) and (b).
    EPA Response: Michigan R. 336.1278a(1) states ``To be eligible for 
a specific exemption listed in R 336.1280 to R 336.1291, any owner or 
operator of an exempt process or exempt process equipment must be able 
to provide information demonstrating the applicability of the 
exemption.'' The language in Michigan R. 336.1278a(1)(a) and (b) are 
examples of what that information might be and not an all-inclusive 
list of required information. EPA believes that the intent of the rule 
is clear in that a source opting to use an exemption must keep any data 
required to demonstrate applicability of an exemption. The specifics of 
the necessary data are determined by each exempt category. If the 
exemption is based on size or capacity of a unit, the source must keep 
data on the size of the emission unit. If the exemption is based on the 
type of activity and associated emissions, the source would need to 
maintain records describing the exact nature of the change and an 
analysis of the resulting change in emissions. EPA does not agree that 
further clarification in Michigan R. 336.1278a is necessary.
    Comment 6: The recordkeeping requirements of Michigan R. 336.1278a 
are not sufficient to ensure that activities will not escape major NSR 
permitting and are not adequate to ensure lawful implementation of all 
the permit exemptions. The rule does not clearly require the 
preparation of a demonstration at the time of the exemption. The rule 
does not clearly require that any demonstration be prepared and 
retained, instead it appears that it could be prepared once MDEQ 
requests it. Finally, the commenter objects to the rule only requiring 
submittal of records upon request by MDEQ arguing that the state will 
not be able to ensure proper implementation without upfront approval of 
the use of the exemptions by the state.
    EPA Response: The fact that the Michigan R. 336.1278a(2) has set a 
deadline for responding to a written request by the state does not 
equate to a requirement for no records until such time as the state 
asks. The first requirement of every exemption is ``This rule does not 
apply if prohibited by R 336.1278 and unless the requirements of R 
336.1278a have been met.'' Because Michigan R. 336.1278a(1) requires 
that ``to be eligible'' for an exemption, the owner/operator of a 
source must be able to provide the information in Michigan R. 
336.1278a(1) and each individual exemption requires that those rules 
have been met, the clear intent is that the information demonstrating 
the applicability of the exemption be developed before the change and 
records kept immediately upon implementation. Finally, the commenter 
seems to suggest that only a requirement for upfront permitting 
authority approval is enforceable. 40 CFR 51.160(e) requires the 
state's procedures to ``identify types and sizes of facilities, 
buildings, structures, or installations which will be subject to 
review.'' The application requirements of 40 CFR 51.160(c) only apply 
to those activities subject to review. If the state had established 
blanket tonnage thresholds, we would not expect that projects under 
those thresholds would require a notice to the permitting authority and 
that the permitting authority would affirm that those projects are 
below the threshold. MDEQ has defined the types and sizes of facilities 
subject to review--any construction activity not listed in the 
categories of exemptions. Nothing in the Act or 40 CFR 51.160 would 
require notice or application from a source not subject to review. With 
respect to enforceability, like tonnage thresholds, the exemptions are 
enforced through periodic inspection of facilities.

E. Michigan R. 336.1280-R. 336.1290 PTI Exemptions

    Michigan R. 336.1280-R. 336.1290 define the specific categories of 
exemptions.
1. General comments on Michigan PTI exemptions and MDEQ and EPA 
analysis of exemptions
    Comment 1: In the November 9, 1999, proposed disapproval, EPA 
stated the state ``must demonstrate why these sources need not be 
subject to review in accordance with Alabama Power de minimis or 
administrative necessity criteria.'' EPA indicated such a demonstration 
would likely include ``(1) an analysis of the types and quantities of 
emissions from exempted sources, and (2) an analysis which shows that 
exempting such facilities from permitting review will not interfere 
with maintenance of the NAAQS or applicable control strategy, and 
otherwise fulfills the purposes of the minor NSR regulations.'' With 
respect to assuring that this SIP relaxation won't interfere with 
attainment or maintenance of the NAAQS or otherwise fulfill the 
requirements for minor new source review, EPA is relying on MDEQ's 
submittals from 2003 and 2017 to show that the SIP revision won't 
interfere with attainment or maintenance of the NAAQS. In those 
submittals, MDEQ provided example emission estimates for a select set 
of exemptions but not for all of the exemptions in Michigan R. 
336.1280-336.1290.
    EPA Response: In our review of the 2003 and 2017 submittals, EPA 
did not find any new exemption that was not sufficiently addressed by 
MDEQ to demonstrate non-interference. The commenters have not provided 
any specific examples. We think it is also important to note that in 
1999 EPA did not conclude that any of the new exemptions were in fact a 
relaxation of the existing SIP in the proposed disapproval. EPA's 
finding was that MDEQ had failed to provide the required analysis 
addressing the effect of the changes on the current SIP.
    Comment 2: MDEQ did not document the basis for its emission factors 
used for its emission estimates, and it is not clear that MDEQ has used 
realistic worst case emission factors.
    EPA Response: The commenters did not provide any specific examples 
of undocumented emission factors. In our review of the emission 
estimates

[[Page 44491]]

provided, MDEQ has used emission factors from AP-42 or other EPA 
documents, manufacturer's data, stack testing, information from past 
state permitting actions, data from the Michigan Air Emission Reporting 
System, mass balance, or some combination of these sources to estimate 
emissions. The data used is clearly documented by MDEQ for each 
estimate. There are a few exemptions that do not result in emissions of 
any criteria pollutant or any pollutant at all. In those circumstances, 
MDEQ has provided an explanation of why those processes would not 
result in emissions of a pollutant regulated under section 110 of the 
Act. For example, Michigan R. 336.1285(2)(ii) exempts ``fuel cells that 
use phosphoric acid, molten carbonate, proton exchange membrane, or 
solid oxide or equivalent technologies.'' In their analysis, MDEQ does 
not provide an emission calculation, but provides an explanation for 
why no emissions of criteria pollutants are expected from this 
technology. EPA finds that MDEQ has used appropriate sources for 
emission factors and that the commenters have provided no evidence 
supporting their claims.
    Comment 3: EPA's proposed approval of these exemptions fail to 
fulfill the purpose of the minor NSR regulations. The December 31, 
2002, major source permitting rule revisions significantly revised and 
limited applicability to major source permitting for modifications at 
major sources. In justifying that rulemaking, EPA cited to state's 
minor NSR rules as providing the needed oversight of modifications at 
existing major source in the cases where modifications at major sources 
could more readily be considered minor modifications. For example, EPA 
stated in the preamble to the 2002 rules that it anticipated a ``large 
majority of the projects that are not major modifications may 
nonetheless be required to undergo a permit action through States' 
minor NSR permit programs'' and stated that such programs could provide 
an opportunity to ensure that the permitting authority agrees with a 
source's emission projections.
    EPA Response: EPA disagrees that the MDEQ minor NSR permitting 
program will not address ``a large majority of the projects that are 
not major modifications.'' In the 2002 rulemaking, EPA did not state 
that every change that was no longer subject to the major source 
permitting requirements due to NSR Reform would be picked up by the 
state minor NSR programs, and statements in the preamble to NSR Reform 
are not evidence that the Michigan minor NSR program is not part of a 
program serving the intended purpose of section 110(a)(2)(C) of the Act 
to prevent construction that would interfere with attainment and 
maintenance of the NAAQS. MDEQ has been implementing these exemptions 
for over a decade and EPA is not aware of a NAAQS violation resulting 
from their use and the commenters have not presented any specific 
evidence that they could result in a violation.
2. Rule Specific Comments
a. Michigan R. 336.1285(2)(a) PTI Exemptions
    Michigan R. 336.1285(2)(a) exempts ``routine maintenance, parts 
replacement, or other repairs that are considered by the department to 
be minor, or relocation of process equipment within the same 
geographical site not involving any appreciable change in the quality, 
nature, quantity, or impact of the emission of an air contaminant 
therefrom.'' The rule also includes examples of changes that would be 
covered by the exemption. These examples help to define the scope of 
changes MDEQ intended the exemption to cover. EPA specifically noted 
concerns with this exemption in a November 9, 1999, proposed 
disapproval. This exemption is part of the approved SIP. Michigan had 
made some fairly minor changes such as changing the word ``commission'' 
to ``Department.'' The only substantive change was the addition of the 
word ``routine.'' Because it might be interpreted as defining ``routine 
maintenance, repair and replacement'' under the major source permitting 
rules, EPA was concerned that the ambiguity might lead to sources 
inappropriately applying the exemption to major source permitting. 
There have been significant changes to the structure of MDEQ's major 
source permitting rules since 1999. At that time, PSD permits were 
issued pursuant to a delegation of 40 CFR 52.21 through the general 
requirements of the Part 2 rules. The state's major non-attainment 
permitting rules were also included in Part 2 at that time. MDEQ now 
has a SIP approved PSD program, and the major source permitting 
requirements have been moved to separate sections of the Michigan 
Administrative Code. The PSD rules are in Part 18 and the major NSR 
rules are in Part 19. EPA believes the previously listed concerns are 
effectively addressed by the requirements of Michigan R. 336.1278 and 
336.1278a in conjunction with the move of major source applicability 
criteria to separate rule sections.
    Comment 1: The terms ``minor'' and ``appreciable'' are vague, 
undefined terms that are subject to varying interpretations. Given that 
the facilities will be making the determinations of whether an activity 
can be exempt under Michigan R. 336.1285(2)(a) and not MDEQ, the 
likelihood of wide and varying interpretations of this provision are 
great, and thus the limitations of this exemption are unenforceable. 
The minor NSR provisions for SIPs at 40 CFR 51.160(a) and (e) require 
the state to clearly define the sizes and types of sources subject to 
review and to do so through legally enforceable procedures, and MDEQ 
has not done so.
    EPA Response: EPA disagrees that the cited terms make the 
limitations unenforceable. We believe that the terms, in context, have 
their common meanings, and that MDEQ has satisfactorily described the 
intent of these rules. For example, the state's interpretation of 
``appreciable'' as stated in their May 15, 2012, letter is the common 
definition of the word, ``capable of being perceived or measured.'' A 
change in emissions that is capable of being measured is actually a 
fairly restrictive limitation. EPA also believes that the state has 
developed adequate policy for their permitting program and exemptions 
to minimize the likelihood of misuse. More importantly, on page 11 of 
the document ``Response to the United States Environmental Protection 
Agency's May 12, 2014, Need for Additional 110(l) Analysis,'' included 
in the 2017 submittal, MDEQ has clearly indicated that this exemption 
``is in no way intended to define routine maintenance, repair and 
replacement,'' and confirm their adherence to current EPA policy on the 
matter.
    Comment 2: The fact that this rule allows ``relocation of process 
equipment within the same geographical site is extremely problematic, 
as any relocation of a source of air emission can change that source's 
impact on air quality and can negate any prior air quality analyses 
that have been done for the source.
    EPA Response: This is language that has already been approved into 
the Michigan SIP, and is not open for comment through this action.
    Comment 3: This rule could be considered to redefine ``routine 
maintenance, repair, and replacement'' under the major source PSD and 
nonattainment NSR rules. This was a concern raised by EPA, to which 
MDEQ responded to in part that its ``Part 2 exemptions are designed for 
use by small emitting sources.'' However,

[[Page 44492]]

nothing in the PTI rules or exemptions limit those permit requirements 
to ``small emitting sources.'' Indeed, the PTI program encompasses PSD 
and nonattainment NSR requirements and activities at existing major 
source subject to PTI requirements.
    EPA Response: As stated previously, EPA believes the additional 
restrictions included in Michigan R. 336.1278 and R. 336.1278a have 
adequately addressed these concerns. MDEQ clearly requires that a 
source first determine that a change is not subject to major source 
permitting requirements prior to implementing any of the listed 
exemptions. Furthermore, MDEQ has confirmed their adherence to current 
EPA guidance on routine maintenance, repair and replacement in the 2017 
submittal as described above.
    Comment 4: While Michigan R. 336.1285(2)(a) gives examples of the 
types of parts replacement it considers to be ``minor,'' some of those 
examples could be construed as allowing component replacement that 
should not be considered routine. Specifically, Michigan provides 
examples that include replacement of fans, pumps, or motors ``that do 
not alter the operation of the source,'' replacement of boiler tubes, 
replacement of engines, compressor or turbines ``as part of a normal 
maintenance program.''
    EPA Response: See response to comment 3 above.
b. Michigan R. 336.1285(2)(b) PTI Exemptions
    Michigan R. 336.1285(2)(b) exempts ``changes in a process or 
process equipment which do not involve installing, constructing, or 
reconstructing an emission unit and which do not involve any meaningful 
change in the quality and nature or any meaningful increase in the 
quantity of the emission of an air contaminant therefrom.''
    Comment 1: This rule has vague, undefined terms such as ``any 
meaningful change,'' ``quality'' or ``nature'' of emissions, and ``any 
meaningful increase in the quantity of emissions.'' It is unclear from 
the rule how changes are to be evaluated and the criteria upon which 
``meaningful'' would be judged. This provision is clearly not 
enforceable and thus does not meet the minor NSR provisions of 40 CFR 
51.160(a) and (e) to clearly define the sizes and types of sources 
subject to review and to do so through legally enforceable procedures.
    EPA Response: EPA disagrees that the cited terms make the 
limitations unenforceable. We believe that the terms, in context, have 
their common meanings, and that that MDEQ has satisfactorily described 
the intent of these rules. In its May 15, 2012, letter, MDEQ states 
that ``meaningful'' would be defined as ``having meaning or purpose.'' 
In the context of a minor construction permitting program that would 
include a change that would result in an increase that could interfere 
with the NAAQS or increment. The rule also lists examples of changes 
that could be allowed by the rule such as a change in supplier of a 
particular raw material. While EPA agrees that there is some ambiguity 
in the term ``meaningful,'' the examples in the rule itself are 
adequate to appropriately narrow the scope of the exemption.
    Comment 2: Many of the examples of the types of changes identified 
in the rule that might be allowable are concerning and could allow a 
modification that should be reviewed for major NSR applicability. The 
fact that the rule limits changes to those which do not involve 
installing, constructing, or reconstructing an emission unit is not 
sufficiently protective given that the exemption still allows modifying 
an emissions unit. While the provisions of the rule are vague and 
subject to interpretation, the examples given in the rule of the types 
of process changes that could be exempt from a PTI show that emission 
increases could occur without review. EPA itself recognized this when 
it requested MDEQ complete an analysis under Section 110(l) of the Act.
    EPA Response: EPA's request for an analysis under section 110(l) of 
the Act was in no way an indication that EPA believed this exemption 
would allow major modifications to go unpermitted. States are obligated 
to provide an analysis under Section 110(l) for any changes to coverage 
under the approved SIP. As discussed previously in this action, EPA is 
satisfied that the changes that MDEQ has made to Michigan R. 336.1278 
and 336.1278a, will prevent the use of the exemptions for actions that 
are subject to major construction permitting requirements. Major NSR 
and/or PSD applicability must be determined pursuant to Michigan Rules 
Part 18 and Part 19 before the exemptions in Part 2 can be applied.
c. Michigan R. 336.1285(2)(c) PTI Exemptions
    Michigan R. 336.1285(2)(c) exempts the following changes from minor 
construction permitting:
    ``Changes in a process or process equipment that do not involve 
installing, constructing, or reconstructing an emission unit and that 
involve a meaningful change in the quality and nature or a meaningful 
increase in the quantity of the emission of an air contaminant 
resulting from any of the following:
    (i) Changes in the supplier or supply of the same type of virgin 
fuel, such as coal, no. 2 fuel oil, no. 6 fuel oil, or natural gas.
    (ii) Changes in the location, within the storage area, or 
configuration of a material storage pile or material handling 
equipment.
    (iii) Changes in a process or process equipment to the extent that 
such changes do not alter the quality and nature, or increase the 
quantity, of the emission of the air contaminant beyond the level which 
has been described in and allowed by an approved permit to install, 
permit to operate, or order of the department.''
    Comment 1: EPA apparently decided no increase in emissions would 
occur with this exemption; however, it is clear that actual emissions 
could increase with this exemption. Further, if there are no allowable 
emissions limits described for a pollutant or emissions unit in a 
permit or MDEQ order, then it appears even allowable emissions could 
increase under this exemption. Changes in types of coal burned can 
significantly increase emissions and therefore could actually impact 
the NAAQS.
    EPA Response: EPA disagrees with the commenter. Michigan R. 
336.1285(2)(c)(i) is limited to a change in supplier or supply of the 
same type of fuel. EPA would not expect state minor NSR programs create 
limits on the supplier of a raw material and the potential impact on 
emissions from a change in supplier is minimal. Nothing in this rule 
would allow a facility to change the type of fuel combusted as 
suggested by the commenter. Michigan R. 336.1285(2)(c)(ii) only allows 
moving storage piles or equipment within the existing storage area. A 
change in the location of equipment and storage piles should have no 
impact on the quantity of emissions; furthermore, when modelling impact 
on NAAQS from a storage area, total emissions from the storage area are 
modeled as an area source. Specific locations of piles or handling 
equipment are not modeled. Because the rule limits changes to the 
existing storage area, we would not expect an impact on the NAAQS with 
these types of changes either. Finally, Michigan R. 336.1285(2)(c)(iii) 
specifically excludes changes that would increase the quantity of 
emissions beyond that already allowed in a permit or order issued by 
MDEQ. Therefore, a change in the type of fuel combusted that results in 
an increase in emissions, as suggested by the

[[Page 44493]]

commenter, would be excluded from the use of this exemption.
    Comment 2: It must be pointed out that the exemptions in Michigan 
R. 336.1285(2)(c), being based essentially on a comparison of 
allowable-to-allowable emission increases, is based on an entirely 
inconsistent emissions increase approach than the major source 
permitting rules. The Courts have previously found that allowable-to-
allowable emissions test are not authorized under major source 
permitting programs.
    EPA Response: As previously discussed in this document, nothing in 
these rules impact applicability under major source permitting 
programs. MDEQ clearly requires that a source first determine that a 
change is not subject to major source permitting requirements prior to 
implementing any of the listed exemptions. With respect to requirements 
for applicability under minor NSR programs, the requirements of section 
110(a)(2)(C) and 40 CFR 51.160 do not expressly require the use of any 
particular applicability test, and therefore do not prohibit the use of 
an allowable-to-allowable or actual-to-actual test.
    Comment 3: Michigan R. 336.1285(2)(c)(ii) could readily allow a 
source to violate terms of an existing permit (including a major source 
PSD or non-attainment NSR permit) by allowing changes in the location 
or configuration of a material storage pile or material handling 
equipment. Any air modeling analysis that was done for such a source 
would have considered the location of material handling emissions in 
relation to publicly accessible land and roads. Given that fugitive 
emissions from material handling and/or storage piles have in many 
cases been modeled to cause or contribute to violations of the NAAQS or 
PSD increments for particulate matter (PM), particulate matter with an 
aerodynamic diameter less than or equal to 10 microns (PM<INF>10</INF>) 
and particulate matter with an aerodynamic diameter less than or equal 
to 2.5 microns (PM<INF>2.5</INF>), this cannot be considered as 
protective of the NAAQS.
    EPA Response: Michigan R. 336.1278(4) states that the exemptions 
only apply to the requirement to obtain a PTI and ``do not exempt any 
source from complying with any other applicable requirement or existing 
permit limitation.'' Therefore, no exemption in Michigan R. 336.1280 
through 336.1290 would allow a source to violate terms of an existing 
permit as suggested by the commenter. Furthermore, as discussed above, 
the exemption limits relocation of equipment and piles to within the 
existing storage area. Due to the way in which emissions from storage 
areas are addressed in a modeling analysis this would result in no 
impact on previous modeling.
d. Michigan R. 336.1285(2)(d)-(f)
    Michigan R. 336.1285(2)(d) exempts the replacement or 
reconstruction of air pollution control equipment with equivalent or 
more efficient control equipment. Michigan R. 336.1285(2)(e) exempts 
the installation of control equipment required by a National Emission 
Standard for Hazardous Air Pollutants. Michigan R. 336.1285(2)(f) 
exempts the installation and construction of air pollution control 
equipment that does not result in a significant increase in a pollutant 
from the pollution controls.
    Comment 1: EPA did not require a section 110(l) analysis for 
Michigan R. 336.1285(d); however, this provision could allow for the 
replacement of existing controls with controls that could create a new 
source of emissions. For example, if a scrubber is installed at a unit 
utilizing dry sorbent injection for sulfur dioxide (SO<INF>2</INF>) 
control, the scrubber would add sources such as lime delivery and 
storage for scrubber waste disposal. EPA should not have excluded this 
provision from the requirement for a section 110(l) analysis.
    EPA Response: See EPA response to comments on the 110(l) analysis 
in Section II. F. below.
e. Michigan R. 336.1285(2)(g)-(mm)
    Comment: Michigan R. 336.1285(2)(g)-(mm) provide for 33 specific 
and diverse exemptions from the PTI requirements. There are certain 
activities that seem as if they could be significant sources of air 
emissions, especially because a company could claim multiple PTI 
exemptions from these activities.
    EPA Response: As explained previously, EPA believes the limiting 
language in Michigan R. 336.1278 and 336.1278a is sufficient to ensure 
that projects subject to major construction permitting requirements are 
excluded from the use of the exemptions. EPA has also previously 
addressed the definition of activity in the rule and believes that the 
rule requires the appropriate aggregation of multiple small changes 
when making applicability decisions.
f. Michigan R. 336.1280-336.1284 and Michigan R. 336.1286-336.1290
    Comment: There are certain activities in Michigan R. 336.1280 
through 336.1284 and Michigan R. 336.1286 through 336.1290 that seem as 
if they could be significant sources of air emissions, especially 
because a company could claim multiple PTI exemptions from these 
activities.
    EPA Response: As explained previously, EPA believes the limiting 
language in Michigan R. 336.1278 and 336.1278a is sufficient to ensure 
that projects subject to major construction permitting requirements are 
excluded from the use of the exemptions. EPA has also previously 
addressed the definition of activity in the rule and believes that the 
rule requires the appropriate aggregation of multiple small changes 
when making applicability decisions.

F. Comments Concerning the 110(l) Demonstration

    EPA received several comments regarding the 110(l) analysis 
provided by MDEQ. Section 110(l) of the CAA states that ``[t]he 
Administrator shall not approve a revision of a plan if the revision 
would interfere with any applicable requirement concerning attainment 
and reasonable further progress or any other applicable requirement of 
this chapter.'' 42 U.S.C. 7410(l). EPA does not interpret section 
110(l) to require a full attainment or maintenance demonstration before 
any changes to a SIP may be approved. Generally, a SIP revision may be 
approved under section 110(l) if EPA finds it will at least preserve 
status quo air quality. See Kentucky Resources Council, Inc. v. EPA, 
467 F.3d 986 (6th Cir. 2006); GHASP v. EPA, No. 06-61030 (5th Cir. Aug. 
13, 2008); see also, e.g., 70 FR 53 (Jan. 3, 2005), 70 FR 28429 (May 
18, 2005) (proposed and final rules, upheld in Kentucky Resources, 
which discuss EPA's interpretation of section 110(l).
    In considering the new exemptions in Michigan R. 336.1280 through 
Michigan R. 336.1290, EPA examined the emission projections provided by 
MDEQ in the 2003 and 2017 submittals, the structure of the existing SIP 
permitting rules and the structure of each new exemption, and in some 
cases conservative air quality analysis (modeling or qualitative 
analysis in the case of ozone) provided in the 2017 submittal. MDEQ's 
currently approved permitting SIP generally requires a PTI for any 
change resulting in an increase in a regulated pollutant unless the 
particular change falls into one of the categories of exemptions 
contained in Michigan R. 336.1280 through Michigan R. 336.1290. MDEQ's 
revisions expand the exempt categories. Several of the exempt 
categories would have no associated emissions of criteria pollutants. 
Several other categories of

[[Page 44494]]

exemptions contain production and operation restrictions and function 
as a permit by rule. Where the exemption did not contain enforceable 
limitations on production and operation, and projected emission 
increases were greater than 10 tons per year of a criteria pollutant, 
MDEQ provided an air quality analysis. MDEQ and EPA have evaluated the 
impacts of the proposed revisions, and determined that they do not 
interfere with attainment of any NAAQS or any other CAA requirement 
because the use of the exemption provides the same level of control 
measures as the control measures that would be included in an 
individual construction permit, the exemption would result in little or 
no increase in emissions of a criteria pollutant, or MDEQ has provided 
a suitable air quality analysis demonstrating no interference with 
attainment, reasonable further progress, or any other requirement of 
the Act.
    Comment 1: It appears that MDEQ and EPA assumed that, if emission 
increases were less than the major source modification significance 
levels, then the increase could not interfere with attainment or 
maintenance of the NAAQS.
    EPA Response: EPA agrees that major source modification 
significance levels alone would be insufficient to demonstrate non-
interference. As explained elsewhere in this action, MDEQ's non-
interference demonstration took into account factors in addition to the 
significance levels, i.e., emission projections, the structure of the 
existing SIP permitting rules and the structure of each new exemption, 
and in some cases conservative air quality analysis (modeling or 
qualitative analysis in the case of ozone) provided in the 2017 
submittal. When evaluating the effect of the new exemptions, MDEQ and 
EPA first considered the level of control required by the current SIP. 
A permit issued under the currently approved SIP does not explicitly 
require an air quality analysis be performed. The currently approved 
program ensures the establishment of control measures in the permit. A 
number of the exemptions are structured as prohibitory rules and as 
such include control measures that are similar to the control measures 
that would be included in an individual permit. These may include 
restrictions on production and operation, restrictions on size of 
equipment, required control technology, or limits on raw materials 
used, in order to qualify for the exemption. Under these circumstances, 
EPA finds that these prohibitory rules, or permits by rule, preserve 
the status quo of the existing SIP. For other exemptions, MDEQ has 
demonstrated that the exemption will not result in an increase in 
emissions or have the potential to emit a criteria pollutant at all. If 
the exemption has no associated criteria pollutant emissions, no 
further analysis is necessary. For exemptions that could result in 
small increases in criteria pollutants, generally less than 10 tons per 
year, MDEQ has presented an analysis of the observed impacts from 
eliminating the individual permit requirement. MDEQ has reviewed the 
state emissions inventory to determine the amount and magnitude of 
emissions from the sources that are being exempted, and they have 
reviewed data from monitors within the state. MDEQ has not found that 
moving away from an individual permit for these smaller exempted 
sources have resulted in violations of the NAAQS. EPA has reviewed 
MDEQ's analysis and agrees that no NAAQS violations would result from 
these small emissions increases. Furthermore, the commenter has not 
cited any example of an individual permit for these exempt categories 
that would have established any additional control measures. Finally, 
for the single exemption that would relax the current SIP and would 
result in an increase of a criteria pollutant greater than 10 tons per 
year, MDEQ provided a conservative modeling analysis demonstrating that 
exempting from permitting sources of that type and size would be 
unlikely to result in a violation of the NAAQS. EPA has also reviewed 
this modeling analysis and agrees that it supports MDEQ's conclusion.
    Comment 2: The impact of an activity's emissions on air pollutant 
concentrations is dependent on a myriad of factors including but not 
limited to stack height, temperature, velocity, topography, other 
buildings in the vicinity, and background pollutant concentrations; 
therefore, no specific ton per year level of emissions can be 
considered as protection of the NAAQS in all locations, and especially 
for short term average NAAQS.
    EPA Response: EPA agrees that it is not possible to set a single 
ton per year threshold for all situations that would prevent 
interference. EPA disagrees that the rules set such a ton per year 
threshold. As discussed elsewhere, tons per year was only one of the 
factors MDEQ utilized to demonstrate non-interference. As previously 
stated, EPA does not interpret section 110(l) to require a full 
attainment or maintenance demonstration before any changes to a SIP may 
be approved.
    Comment 3: MDEQ failed to evaluate emissions for the worst-case 
scenario under each exemption. This is especially true for the broad 
exemptions of Michigan R. 336.1285 where MDEQ just gave examples of 
emission estimates for certain exemptions.
    EPA Response: There are a few exemptions where MDEQ did not provide 
a worst-case analysis; however, in those cases, MDEQ has provided real 
world examples of how the exemptions have been applied and the 
resulting emissions increases that are representative of the larger 
projects that would likely use the exemption. For example, for Michigan 
R. 336.1285(2)(b)(i)(H), which exempts lengthening a paint drying oven 
to allow for longer curing time, the emission estimates provided by 
MDEQ are based on an actual project at a major auto manufacturer.
    Comment 4: MDEQ failed to evaluate the cumulative emissions 
increases that could be exempt for a single source relying on multiple 
exemptions (such as adding several oil-fired equipment of less than 20 
MMBtu/hour pursuant to Michigan R. 336.1282(2)(b)).
    EPA Response: MDEQ has provided projected increases from each of 
the exemptions, and EPA has found the analysis provided by MDEQ to be 
reasonable. With respect to the specific example provided by the 
commenter, the fuel burning exemption at Michigan R. 336.1282(2)(b) is 
structured as a prohibitory rule. The limitations imposed by the rule 
are equivalent to the types of limitations that would be included in a 
permit under the currently approved SIP. Moving from an individual 
permit system to a permit by rule system would preserve the status quo 
of the existing SIP.
    Comment 5: EPA did not require a Section 110(l) analysis for 
Michigan R. 336.1285(2)(d) which allows for replacement of an air 
pollution control equipment with equivalent or more efficient 
equipment. However, this provision could allow an increase in 
emissions--for example, if a scrubber is installed at a unit utilizing 
dry sorbent injection for SO<INF>2</INF> control, the scrubber would 
add sources such as lime delivery and storage and for waste disposal. 
Thus, EPA should not have exempted this rule from a 110(l) analysis.
    EPA Response: EPA did not exempt this rule from 110(l) 
requirements. EPA did determine that no additional analysis beyond the 
analysis of the exemption included with the 2003 submittal was 
necessary. As discussed above, EPA does not interpret 110(l) as 
requiring a full attainment or maintenance demonstration. The exemption 
is limited to the replacement

[[Page 44495]]

of existing controls with identical or more efficient controls. Some 
form of add-on control technology must already exist to use this 
exemption. In the example provided by the commenter, where a source 
replaced a dry flue gas desulfurization unit with a wet flue gas 
desulfurization unit, both the existing controls and the new controls 
would have used lime in the process. The facility would have already 
had sources associated with lime delivery and storage, and both 
controls result in waste material.
    Comment 6: While EPA required a 110(l) analysis for Michigan R. 
336.1285(2)(e) and (f), MDEQ simply evaluated the emission increase 
from a couple of examples and did not estimate worst case emissions.
    EPA Response: EPA believes that the examples selected by MDEQ are 
representative of the types of changes that would actually use the 
exemptions.
    Comment 7: EPA and MDEQ have not demonstrated that permit 
exemptions for activities with emission increases less than PSD 
significance levels will not interfere with attainment or maintenance 
of the NAAQS and will otherwise be consistent with the requirements of 
the Act.
    EPA Response: EPA's conclusion that the changes to exempt 
categories will not interfere with attainment or maintenance of the 
NAAQS is not based on the assumption that increases less than the PSD 
significance thresholds will not impact the NAAQS. As discussed above, 
EPA does not interpret section 110(l) to require a full attainment or 
maintenance demonstration before any changes to a SIP may be approved. 
In considering the new exemptions in Michigan R. 336.1280 through 
Michigan R. 336.1290, EPA examined the emission projections provided by 
MDEQ in the 2003 and 2017 submittals, the structure of the existing SIP 
permitting rules and the structure of each new exemption, and in some 
cases conservative air quality analysis (modeling or qualitative 
analysis in the case of ozone) provided in the 2017 submittal.
    Comment 8: MDEQ's modeling demonstrates that emission increases at 
levels much lower than the PSD significance levels could threaten 
attainment of the NAAQS and that other contributing factors such as 
stack characteristics and background concentration of an area must also 
be taken into account. Furthermore, because the modeling performed 
shows modeled concentrations near the 24-hour PM<INF>2.5</INF> NAAQS, 
MDEQ's modeling demonstrates that Michigan R. 336.1285(p) could result 
in a violation of a NAAQS.
    EPA Response: The modeling submitted in support of Michigan R. 
336.1285(2)(p) is sufficiently conservative to demonstrate that the 
exemption is unlikely to result in a violation of a NAAQS. While the 
modeled concentration for larger tower dryers when combined with a 
conservative background are approaching the 24-hour PM<INF>2.5</INF> 
NAAQS, this type of equipment is uncommon in the state of Michigan and 
would be located in rural areas where background concentrations tend to 
be lower. The more common column dryers would have a significantly 
lower impact on PM<INF>2.5</INF> concentrations.
    Comment 9: EPA cannot justify approving Michigan's minor source 
review exemptions based on how such activities were previously 
permitted by MDEQ.
    EPA Response: As stated above EPA does not interpret section 110(l) 
to require a full attainment or maintenance demonstration before any 
changes to a SIP may be approved. When evaluating the effect of any new 
exemption, EPA must first consider the level of control required by the 
current SIP. In this case, the evaluation concerns the effect of the 
individual construction permit issued as required by the currently 
approved permitting rules. A permit issued under the currently approved 
SIP does not explicitly require an air quality analysis be performed. 
What is assured under the currently approved program is the 
establishment of control measures in the permit. A number of the 
exemptions are structured as prohibitory rules and include control 
measures that are similar to the control measures that would be 
included in an individual permit. These may include restrictions on 
production and operation, restrictions on size of equipment, required 
control technology, or limits on raw materials used. Under these 
circumstances, EPA finds that these prohibitory rules, or permits by 
rule, preserve the status quo of the existing SIP.
    Comment 10: In the proposed approval EPA states, ``where an 
exemption could result in an increase of a regulated pollutant in 
amounts greater than 10 tons per year, MDEQ provided modeling, or in 
the case of ozone, a qualitative analysis to demonstrate that the 
emissions that could result from the exempt categories would have no 
significant impact on compliance with the NAAQS.'' A modeling analysis 
was only included for Michigan R. 336.1285(2)(p), yet a review of 
Attachment H to the 2003 submittal shows several categories with 
estimates exceeding 10 tons per year. Specifically, the commenter has 
identified the fuel burning equipment exemptions in Michigan R. 
336.1282(2)(b).
    EPA Response: EPA disagrees to the extent that the commenter is 
suggesting that a demonstration of non-interference requires modeling 
for all exemptions. As previously discussed, the fuel burning 
exemptions in Michigan R. 336.1285(b) are structured as permits by rule 
and contain enforceable restrictions on capacity and raw materials 
which are equivalent to the controls that would be included in a permit 
under the currently approved SIP. Moving from an individual permit 
system to a permit by rule system would preserve the status quo of the 
existing SIP. The only exemption that relaxes the current SIP 
permitting requirements with a resulting increase greater than 10 tons 
per year is the grain handling exemption at Michigan R. 336.1285(p), 
for which MDEQ provided a modeling analysis showing that the revision 
would not interfere with attainment of the NAAQS.

G. Comments Concerning the Docket

    Approximately a week before the end of the first comment period for 
this rulemaking, EPA was informed of issues with the electronic docket 
at regulations.gov. The docket incorrectly linked to numerous unrelated 
documents. Additionally, upon review, EPA noted that certain documents 
related to the rulemaking were not present. The interested parties 
requested that the docket be fixed and that EPA extend the comment 
period. Because of the lack of time remaining on the comment period, 
EPA was unable to extend the comment period, and informed the 
interested parties that EPA would address the docket issues and reopen 
the comment period for an additional 30 days. The comments received 
after the close of the first comment period noted the docket issues in 
the comments. EPA added missing information to the docket in September 
2017 and published a notice reopening the comment period for 30 days on 
November 2, 2017.
    In comments received during the first reopening, commenters noted 
that the electronic file for the September 2003 submittal from MDEQ was 
missing an attachment. The missing information was added to the 
electronic docket in November of 2017, and the interested parties were 
informed that EPA would reopen the comment period for a second time for 
a period of 15 days. The second reopening of the comment period was 
published on January 9, 2017. EPA believes that the correction of the

[[Page 44496]]

electronic docket and the two notices reopening the comment period for 
the rulemaking address all comments related to missing information in 
the docket.
    The comments received during the first reopening also noted that 
EPA had included copies of several MDEQ policy documents to the docket. 
The commenters noted that if EPA is proposed to approve any of these 
documents as part of the SIP, EPA must issue a revised proposed 
rulemaking making clear to the public which documents it is proposing 
to approve. EPA is not approving these documents into the SIP and the 
summary of documents EPA is incorporating into the SIP in Section VI 
``Incorporation by Reference'' in the proposed rulemaking is correct. 
The policy documents were added because EPA thought they would be of 
interest to the public. EPA is not relying on these documents to 
support approval of the rules, and there is no need to re-propose based 
on the addition of these documents to the docket as suggested by the 
commenters.

III. What action is EPA taking?

    EPA is approving all changes submitted by MDEQ except for changes 
to Michigan R 336.1205 which includes provisions for public notice. EPA 
will not be taking any action with respect to the changes in public 
notice and will be addressing Michigan R 336.1205 in a separate action. 
The already approved public notice procedures will remain in the SIP 
until EPA takes action on Michigan R 336.1205.

IV. Incorporation by Reference

    In this rule, EPA is finalizing regulatory text that includes 
incorporation by reference. In accordance with requirements of 1 CFR 
51.5, EPA is finalizing the incorporation by reference of the Michigan 
Regulations described in the amendments to 40 CFR part 52 set forth 
below. EPA has made, and will continue to make, these documents 
generally available through www.regulations.gov and at the EPA Region 5 
Office (please contact the person identified in the For Further 
Information Contact section of this preamble for more information). 
Therefore, these materials have been approved by EPA for inclusion in 
the State implementation plan, have been incorporated by reference by 
EPA into that plan, are fully federally enforceable under sections 110 
and 113 of the Act as of the effective date of the final rulemaking of 
EPA's approval, and will be incorporated by reference in the next 
update to the SIP compilation.\1\
---------------------------------------------------------------------------

    \1\ 62 FR 27968 (May 22, 1997).
---------------------------------------------------------------------------

V. Statutory and Executive Order Reviews

    Under the Act, the Administrator is required to approve a SIP 
submission that complies with the provisions of the Act and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, EPA's role is to approve state choices, 
provided that they meet the criteria of the Act. Accordingly, this 
action merely approves state law as meeting Federal requirements and 
does not impose additional requirements beyond those imposed by state 
law. For that reason, this action:
    <bullet> Is not a significant regulatory action subject to review 
by the Office of Management and Budget under Executive Orders 12866 (58 
FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 2011);
    <bullet> Is not an Executive Order 13771 (82 FR 9339, February 2, 
2017) regulatory action because SIP approvals are exempted under 
Executive Order 12866;
    <bullet> Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
    <bullet> Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
    <bullet> Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
    <bullet> Does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
    <bullet> Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
    <bullet> Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
    <bullet> Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the Act; and
    <bullet> Does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where EPA or an Indian tribe has 
demonstrated that a tribe has jurisdiction. In those areas of Indian 
country, the rule does not have tribal implications and will not impose 
substantial direct costs on tribal governments or preempt tribal law as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000).
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. EPA will submit a report containing this action and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2).
    Under section 307(b)(1) of the Act, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by October 30, 2018. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this action for the purposes of judicial review nor 
does it extend the time within which a petition for judicial review may 
be filed, and shall not postpone the effectiveness of such rule or 
action. This action may not be challenged later in proceedings to 
enforce its requirements. (See section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Incorporation by reference, Intergovernmental relations, Lead, Nitrogen 
dioxide, Ozone, Particulate matter, Reporting and recordkeeping 
requirements, Sulfur oxides, Volatile organic compounds.

    Dated: August 21, 2018.
Cathy Stepp,
Regional Administrator, Region 5.

    40 CFR part 52 is amended as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for part 52 continues to read as follows:


[[Page 44497]]


    Authority: 42 U.S.C. 7401 et seq.

0
2. In Sec.  52.1170, the table in paragraph (c) is amended by revising 
the entries under the heading ``Part 2. Air Use Approval'' to read as 
follows:


Sec.  52.1170  Identification of plan.

* * * * *
    (c) * * *

                                        EPA-Approved Michigan Regulations
----------------------------------------------------------------------------------------------------------------
                                                        State
     Michigan citation                Title           effective      EPA approval date           Comments
                                                         date
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
                                            Part 2--Air Use Approval
----------------------------------------------------------------------------------------------------------------
R 336.1201.................  Permits to install....    6/20/2008  08/31/2018, [Insert
                                                                   Federal Register
                                                                   citation].
R 336.1201a................  General permits to        7/01/2003  08/31/2018, [Insert
                              install.                             Federal Register
                                                                   citation].
R 336.1202.................  Waivers of approval...    6/20/2008  08/31/2018, [Insert
                                                                   Federal Register
                                                                   citation].
R 336.1203.................  Information required..    7/26/1995  08/31/2018, [Insert
                                                                   Federal Register
                                                                   citation].
R 336.1204.................  Authority of agents...    7/26/1995  08/31/2018, [Insert
                                                                   Federal Register
                                                                   citation].
R 336.1206.................  Processing of             7/26/1995  08/31/2018, [Insert
                              applications for                     Federal Register
                              permits to install.                  citation].
R 336.1207.................  Denial of permits to      6/20/2008  08/31/2018, [Insert
                              install.                             Federal Register
                                                                   citation].
R 336.1209.................  Use of old permits to     7/26/1995  08/31/2018, [Insert
                              limit potential to                   Federal Register
                              emit.                                citation].
R 336.1212.................  Administratively          7/26/1995  08/31/2018, [Insert
                              complete                             Federal Register
                              applications;                        citation].
                              insignificant
                              activities;
                              streamlining
                              applicable
                              requirements;
                              emissions reporting
                              and fee calculations.
R 336.1216.................  Modifications to          7/26/1995  08/31/2018, [Insert
                              renewable operating                  Federal Register
                              permits.                             citation].
R 336.1219.................  Amendments for change     6/20/2008  08/31/2018, [Insert
                              of ownership or                      Federal Register
                              operational control.                 citation].
R 336.1221.................  Construction of           7/17/1980  1/12/1982, 47 FR 1292.
                              sources of
                              particulate matter,
                              sulfur dioxide, or
                              carbon monoxide in or
                              near nonattainment
                              areas; conditions for
                              approval.
R 336.1240.................  Required air quality      6/20/2008  08/31/2018, [Insert
                              models.                              Federal Register
                                                                   citation].
R 336.1241.................  Air quality modeling      6/20/2008  08/31/2018, [Insert
                              demonstration                        Federal Register
                              requirements.                        citation].
R 336.1278.................  Exclusion from            6/20/2008  08/31/2018, [Insert
                              exemption.                           Federal Register
                                                                   citation].
R 336.1278a................  Scope of permit          12/20/2016  08/31/2018, [Insert
                              exemptions.                          Federal Register
                                                                   citation].
R 336.1280.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; cooling                  Federal Register
                              and ventilating                      citation].
                              equipment.
R 336.1281.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; cleaning,                Federal Register
                              washing, and drying                  citation].
                              equipment.
R 336.1282.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; furnaces,                Federal Register
                              ovens, and heaters.                  citation].
R 336.1283.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; testing                  Federal Register
                              and inspection                       citation].
                              equipment.
R 336.1284.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions;                          Federal Register
                              containers.                          citation].
R 336.1285.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions;                          Federal Register
                              miscellaneous.                       citation].
R 336.1286.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; plastic                  Federal Register
                              processing equipment.                citation].
R 336.1287.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; surface                  Federal Register
                              coating equipment.                   citation].
R 336.1288.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; oil and                  Federal Register
                              gas processing                       citation].
                              equipment.
R 336.1289.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; asphalt                  Federal Register
                              and concrete                         citation].
                              production equipment.
R 336.1290.................  Permit to install        12/20/2016  08/31/2018, [Insert
                              exemptions; emission                 Federal Register
                              units with limited                   citation].
                              emissions.
R 336.1299.................  Adoption of standards     6/20/2008  08/31/2018, [Insert
                              by reference.                        Federal Register
                                                                   citation].
 

[[Page 44498]]

 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
[FR Doc. 2018-18853 Filed 8-30-18; 8:45 am]
 BILLING CODE 6560-50-P


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