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Federal Register / Vol. 86, No. 87 / Friday, May 7, 2021 / Proposed Rules
Solutions, Hexion Inc., INEOS Joliet, INEOS Styrolution America LLC, Polynt Composites USA, Akzo Nobel, AbbVie, LyondellBasell, Exxon Mobil Oil Corp., Citgo Petroleum, Koppers Inc., and Stepan Co.
Ester in Bedford Park, IL, Hexion in Bedford Park, IL, INEOS Styrolution America LLC in Channahon, IL, and Polynt in Carpentersville, IL are not subject to RACT because the PTE VOC
from each of these sources is less than 100 TPY.
The second INEOS source, INEOS
Joliet, is also located in Channahon, IL.
The supporting documentation provided by INEOS Joliet indicates that some of the wastewater streams are hard piped to two emission points. These two emission points are a storage tank vent and an anaerobic flare, each of which has a federally enforceable permitted limit of 0.44 TPY. The remaining wastewater streams at this source are directed through open sewers to the wastewater treatment system. After considering the federally enforceable permitted limit, EPA calculated the total PTE VOC to be 41.1 TPY, which is below the 100 TPY non-CTG threshold.
Akzo Nobel is located in Morris, IL
and has two wastewater emission units.
One unit is classified as an insignificant activity less than 0.1 pounds per hour and less than 0.44 TPY and the other unit is required by a SIP-approved rule to route its VOC emissions to an afterburner that achieves at least 85
percent control. After considering this federally enforceable control, the total PTE VOC from wastewater at Akzo Nobel was determined to be less than 1
TPY.
AbbVie in North Chicago, IL
demonstrated RACT equivalence. Most of its wastewater is taken off site for treatment. The remaining VOCcontaining wastewater streams are well controlled at the on-site wastewater treatment plant. The requirements to conduct pretreatment are federally enforceable through its Discharge Control Document, which was issued by the publicly owned treatment works as required by its National Pollutant Discharge Elimination System permit issued by Illinois EPA. A comparison of controlled and uncontrolled emissions demonstrated approximately 98 percent control of VOC from their wastewater operations. EPA concluded that AbbVie is well controlled and that this level of control represents RACT.
LyondellBasell is subject to the Miscellaneous Organic Chemical Manufacturing NESHAP and Benzene Waste Operations NESHAP BWON.
After considering these applicable NESHAPs, the EPA calculated the total
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PTE VOC to be 20.38 TPY, which is below the 100 TPY non-CTG threshold.
Both Exxon Mobil Oil Corporations Joliet Refinery and Citgo Petroleums Lemont Refinery demonstrated that potential VOC emissions from sources at each facility not subject to a CTG are below the 100 TPY non-CTG threshold for moderate areas. Both refineries are subject to the BWON NESHAP 40 CFR
61, subpart FF. After considering BWON restrictions, the PTE VOC from refinery wastewater was calculated to be 75.3 TPY, which is below the 100 TPY
non-CTG threshold. This value was derived from BWON NESHAPs 6.0
megagrams per year benzene limit and EPAs technology review in support of the recent amendments to the Petroleum Refinery Sector Rule.
Koppers in Cicero, IL submitted a modeling demonstration for the wastewater system at the plant.
Environmental Resources Management, Inc. modeled the Koppers wastewater treatment plant using a Toxchem model to predict the annual PTE VOC. The total PTE VOC at Koppers was estimated to be 2.25 TPY, which is far below the 100 TPY non-CTG threshold.
Stepan Co. in Elwood, IL applied for a construction permit that provides operational limits on throughput from upstream processes into the wastewater stream. The operational limits on throughput are on the masses of methanol and other VOC compounds in the wastewater, which contribute to the VOC wastewater emissions.
Biodegradation is also required to meet the effluent limitation in the federally enforceable National Pollutant Discharge Elimination System permit.
After considering the application of biodegradation provided by the three aeration tanks at Stepan Co., the operational limits result in a potential to emit VOC of 97.8 TPY, which is below the 100 TPY non-CTG threshold. EPA is proposing to approve this construction permit as a revision to the Illinois SIP, making the throughput limits federally enforceable.
Based on the information that Illinois provided, we agree that that these sources either demonstrated RACT
equivalence or are below the 100 TPY
non-CTG major source threshold for moderate areas. Therefore, the VOC
RACT SIP submittals for the Illinois portion are approvable as meeting the moderate VOC RACT requirements of section 182b2 of the CAA.
IV. What action is EPA taking?
EPA is proposing to approve negative declarations, a VOC RACT certification, and the Stepan Co. construction permit submitted by Illinois as meeting the
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CAA section 182b2 moderate RACT
requirements for the Illinois portion under the 2008 8-hour ozone NAAQS.
V. Incorporation by Reference In this rule, EPA is proposing to include in a final EPA rule regulatory text that includes incorporation by reference. In accordance with requirements of 1 CFR 51.5, EPA is proposing to incorporate by reference the Illinois construction permit for Stepan Companys Millsdale Plant, issued October 30, 2020, as described in section III. of this preamble. 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.
VI. Statutory and Executive Order Reviews Under the CAA, the Administrator is required to approve a SIP submission that complies with the provisions of the CAA and applicable Federal regulations.
42 U.S.C. 7410k; 40 CFR 52.02a.
Thus, in reviewing SIP submissions, EPAs role is to approve state choices, provided that they meet the criteria of the CAA. 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:
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;
Does not impose an information collection burden under the provisions of the Paperwork Reduction Act 44
U.S.C. 3501 et seq.;
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.;
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. 1044;
Does not have federalism implications as specified in Executive Order 13132 64 FR 43255, August 10, 1999;
Is not an economically significant regulatory action based on health or safety risks subject to Executive Order 13045 62 FR 19885, April 23, 1997;

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