Intent to Modify Air Emission Permit to Central Sandblasting Company

Technical Support Document For Draft Air Emission Permit No. 12300755-102

This technical support document (TSD) is intended for all parties interested in the draft permit and to meet the requirements that have been set forth by the federal and state regulations (40 CFR § 70.7(a)(5) and Minn. R. 7007.0850, subp. 1). The purpose of this document is to provide the legal and factual justification for each applicable requirement or policy decision considered in the preliminary determination to issue the draft permit.

1. General information

1.1 Applicant and stationary source location:

Table 1. Applicant and source address Stationary source/Address (SIC Code: 3479 - Coating, Engraving, and Allied Applicant/Address Services, Not Elsewhere Classified; See NAICS) Central Sandblasting Co Central Sandblasting Company 2299 County Road H 2299 County Road H Mounds View, Minnesota 55112-1517 Mounds View, MN 55112-1517 Contact: Lucas Herbst Metal Finishers Incorporated Phone: 763-786-9040 2297 County Road H Mounds View, MN 55112-1517

1.2 Facility description

Central Sandblasting Company operates a metal sandblasting and coating facility located in Mounds View, Minnesota, and also owns the nearby metal coating facility of Metal Finishers Incorporated. Under New Source Review regulations, the two facilities are being permitted together as a single source because they are both part of the same industrial grouping as defined by Standard Identification Classification (SIC code), they are adjacent next-door facilities, and they are under common ownership. The Central Sandblasting facility consists of two spray booths each operating with two panel filters in series as particulate control, two air makeup units, and cleaning solvent use. The Metal Finishers facility consists of one spray booth operating with a water curtain as particulate control, plus an air makeup unit. There are also several activities that qualify as insignificant under Minnesota Rules, listed in Appendix A of the permit.

The primary pollutants emitted from the existing facility are volatile organic compounds (VOCs), particulate matter, particulate matter less than 10 microns, and particulate matter less than 2.5 microns (PM/PM10/PM2.5), and hazardous air pollutants (HAPs).

1.3 Description of the activities allowed by this permit action This permit action is Major Amendment. Construction is authorized for the spray booth (EQUI 9), panel filters (TREAs 9, 10), and air makeup units (EQUIs 10, 11) being added to Central Sandblasting Co; however, the EQUI 9 spray booth and associated panel filters have already been constructed under a minor amendment application received in 2019 that was ultimately denied, and an enforcement action has been taken which is being resolved in part through this major amendment. The spray booth (EQUI 12), water curtain (TREA 11), and air makeup unit (EQUI 13) from Metal Finishers Inc were previously constructed and operating under air permit # 123000774-001 so no construction is authorized at that facility.

This major amendment adds a new spray booth (EQUI 9) with two associated panel filters (TREAs 9, 10) and two air makeup units (EQUIs 10, 11) to the permit. The units at Metal Finishers Inc are also being added to

Technical Support Document, Permit Number: 12300755-102 Page 1 of 11 the permit (spray booth EQUI 12 with associated water curtain TREA 11, and one air makeup unit EQUI 13); however, these units were previously operating under air permit # 12300774-001 and are not being newly constructed. Three spray booths (EQUIs 4-6) and their associated panel filters (TREAs 1-3, 5-7) have been permanently removed from Central Sandblasting with the installation of the EQUI 9 spray booth.

The MPCA has a combined operating and construction permitting program under Minn. R. ch. 7007. Under that authority, this permit action authorizes construction.

1.4 Description of notifications and applications included in this action

Table 2. Notifications and applications included in this action Date received Application/notification type and description 06/03/2020 Major Amendment (IND20200001)

1.5 Facility emissions:

Table 3. Title I emissions summary (new units at Central Sandblasting Co) (IND20200001)

Unlimited potential Limited potential emissions from the emissions from NSR/112(g) threshold NSR/112(g) review modification the modification for new major source required? Pollutant (tpy) (tpy) (tpy) (yes/no) PM 1441 0.30 250 No

PM10 1441 0.30 250 No

PM2.5 1441 0.30 250 No

NOX 3.92 3.92 250 No

SO2 0.024 0.024 250 No CO 3.30 3.30 250 No Ozone (VOC) 416.6 0.22 250 No Lead 1.96E-5 1.96E-5 250 No

CO2e* 2408 2408 100,000 No Methyl Isobutyl No (already major Ketone 235.9 0.00 10 source for HAPs) No (already major Toluene 175.8 1.33E-5 10 source for HAPs) No (already major Xylene 254.3 0.00 10 source for HAPs) No (already major Total HAPs 400.1 0.074 25 source for HAPs) *Carbon dioxide equivalents as defined in Minn. R. 7007.0100. Note that the existing COMG 2 Precap limits the potential particulate and VOC emissions increases due to the EQUI 9 spray booth; additionally, 40 CFR pt. 63, subp. MMMM requirements incorporated at COMG 3 limits the potential organic HAP emissions increases due to the EQUI 9 spray booth. Unlimited potential HAP emissions reflect worst-case for the specific individual HAP across all coating materials used.

Table 4. Title I emissions summary (units operating at Metal Finishers Inc) (IND20200001)

Technical Support Document, Permit Number: 12300755-102 Page 2 of 11 Unlimited potential Limited potential emissions from the emissions from NSR/112(g) threshold NSR/112(g) review modification the modification for new major source required? Pollutant (tpy) (tpy) (tpy) (yes/no)

PM10 161.7 0.073 250 No

PM2.5 161.7 0.073 250 No

NOX 0.96 0.96 250 No

SO2 0.0058 0.0058 250 No CO 0.81 0.81 250 No Ozone (VOC) 102.8 0.053 250 No Lead 4.80E-6 4.80E-6 250 No

CO2e* 1180 1180 100,000 No Methyl Isobutyl No (already major Ketone 58.2 0.00 10 source for HAPs) No (already major Toluene 43.4 3.26E-5 10 source for HAPs) No (already major Xylene 62.7 0.00 10 source for HAPs) No (already major Total HAPs 98.7 0.018 25 source for HAPs) *Carbon dioxide equivalents as defined in Minn. R. 7007.0100. Note that the existing COMG 2 Precap limits the potential particulate and VOC emissions increases due to the EQUI 12 spray booth; additionally, 40 CFR pt. 63, subp. MMMM requirements incorporated at COMG 3 limits the potential organic HAP emissions increases due to the EQUI 12 spray booth. Unlimited potential HAP emissions reflect worst-case for the specific individual HAP across all coating materials used.

Table 5. Total facility potential to emit summary

Single All

PM PM10 PM2.5 SO2 NOx CO CO2e VOC HAP HAPs tpy tpy tpy tpy tpy Tpy tpy tpy tpy tpy Total Facility 95.4 95.4 95.4 0.03 4.88 4.10 6000 225 225 225 Limited (**) Potential Emissions Total Facility 3.18 3.18 2.64 0.00 0.00 0.00 * 20.87 * Actual Emissions (2019) * Not reported in MN emission inventory. ** Because of the various coatings which the facility could use, three different individual HAPs each have a limited potential to emit of 225 tpy. These are Methyl Isobutyl Ketone, Toluene, and Xylene.

Table 6. Facility classification

Classification Major Synthetic minor/area Minor/area PSD X Part 70 Permit Program X Part 63 NESHAP X

Technical Support Document, Permit Number: 12300755-102 Page 3 of 11 1.6 Changes to permit

The following changes were made with this permit action: • Added a new spray booth (EQUI 9) with two associated panel filters (TREA 9, TREA 10). EQUI 9 is subject to COMG 2 limits and 40 CFR pt. 63, subp. MMMM requirements in COMG 3. TREAs 9 and 10 are subject to COMG 4 and COMG 6 panel filter requirements • Added two air makeup units (EQUI 10, EQUI 11). • Removed three spray booths (EQUIs 4-6) and their associated panel filters (TREAs 1-3, 5-7). • Incorporated operations at the nearby Metal Finishers Inc facility, specifically a spray booth (EQUI 12) with associated water curtain (TREA 11) and one air makeup unit (EQUI 13). EQUI 12 is subject to COMG 2 limits and 40 CFR pt. 63, subp. MMMM requirements in COMG 3. • Corrected 40 CFR pt. 63, subp. MMMM applicability trigger date listed in COMG 3 from January 2, 2007 to October 1, 2008.

2. Regulatory and/or statutory basis

2.1 New source review (NSR) The permit carries forward limits on the facility such that it is a minor source under New Source Review regulations. This permit brings in the operations of Metal Finishers Inc, which is currently operating under an Option D registration permit (#12300774-001), under the permit for Central Sandblasting Company as part of a single source; according to New Source Review regulations, the two facilities are both part of the same industrial grouping as defined by Standard Identification Classification (SIC code), they are adjacent next-door facilities, and they are under common ownership.

2.2 Part 70 permit program The facility is a major source under the Part 70 permit program.

2.3 New source performance standards (NSPS) The Permittee has stated that no New Source Performance Standards apply to the operations at this facility.

2.4 National emission standards for hazardous air pollutants (NESHAP) The facility is an existing major source of HAPs and is subject to 40 CFR pt. 63, subp. MMMM (National Emission Standards for Hazardous Air Pollutants for Surface Coating of Miscellaneous Metal Parts and Products). Note that EQUIs 9 and 12 are being added to facility but applicability under 40 CFR pt. 63, subp. MMMM does not change because per 40 CFR § 63.3882(b)(1), the entire collection at a source is considered subject to the standard and not subject by individual emission units. Additionally, the 40 CFR pt. 63, subp. MMMM applicability date listed in COMG 3 was corrected to October 1, 2008. This is because the EQUI 7 spray booth was installed in October 2007 to trigger major source status for HAPs, and 40 CFR § 63.3881(c)(2) allows one year after the installation trigger (October 2008) to achieve compliance with the standard when it is later than the January 2, 2007 trigger date listed in the rule.

2.5 Compliance assurance monitoring (CAM) The table below lists the sources subject to CAM, the control equipment used, whether the source is a large or other pollutant specific emission unit (PSEU), and the pollutants triggering CAM.

Table 7. CAM summary

Unit Control CAM applicability Pollutant Emission Limitation Basis

Technical Support Document, Permit Number: 12300755-102 Page 4 of 11 Unit Control CAM applicability Pollutant Emission Limitation Basis PM <= 95.0 tpy.

PM10 <= 95.0 tpy.

PM2.5 <= 95.0 tpy. [Title I Condition: Avoid major source under 40 CFR EQUI 9 (Spray TREA 9 Panel filter 52.21(b)(1)(i) and Minn. R. Booth 5) TREA 10 Panel filter Other PM/PM10/PM2.5 7007.3000] PM <= 95.0 tpy.

PM10 <= 95.0 tpy.

PM2.5 <= 95.0 tpy. [Title I Condition: Avoid major EQUI 12 source under 40 CFR (Spray Booth 52.21(b)(1)(i) and Minn. R. MFI) TREA 11 Water curtain Other PM/PM10/PM2.5 7007.3000]

The controlled PM/PM10/PM2.5 PTE of each spray booth exceeds 100 tpy, but because both units are subject to the COMG 2 PM/PM10/PM2.5 emission limits of 95.0 tons per year the spray booths are considered Other PSEUs under CAM.

CAM plans were not submitted for review with this major amendment because both EQUI 9 and EQUI 12 spray booths are considered Other PSEUs under CAM. These CAM plans will need to be submitted for review as part of permit reissuance.

2.6 Regulatory overview

Table 8. Regulatory overview of units affected by the modification/permit amendment

Subject item* Applicable regulations Rationale

COMG 2 (VOC 40 CFR pt. 64 to avoid large Compliance Assurance Monitoring (CAM). Limits on PM, PM10, and and Particulate PSEU PM2.5 emissions to avoid large PSEU classification under CAM.

Coating Limits) Title I Condition: Avoid Prevention of Significant Deterioration (PSD). Limits on PM, PM10, EQUI 9, EQUI 12 major source under 40 CFR PM2.5, and VOC emissions to avoid large PSEU classification under spray booths § 52.21(b)(1)(i) and Minn. CAM. are subject to R. 7007.3000 this group COMG 3 40 CFR pt. 63, subp. National Emission Standards for Hazardous Air Pollutants for Surface (NESHAP MMMM Coating of Miscellaneous Metal Parts and Products. This is an existing MMMM) affected source under this standard. The Permittee is complying with EQUI 9, EQUI 12 the emission rate without controls compliance option. If the spray booths Permittee’s coating operations include high performance or extreme are subject to performance fluoropolymer coatings, the Permittee has the option this group to either comply separately with each subcategory emission limit, or to comply with a facility-specific emission limit as described in 40 CFR § 63.3890(c)(2). The Permittee has rejected the option to claim waste credit in organic HAP emission calculations. COMG 4 40 CFR pt. 64 Compliance Assurance Monitoring (CAM). The panel filters are used (Individual to comply with the Industrial Process Equipment Rule particulate Panel Filter limit, and each spray booth has an uncontrolled PTE greater than 100 Requirements) tpy.

Technical Support Document, Permit Number: 12300755-102 Page 5 of 11 Subject item* Applicable regulations Rationale TREA 9, TREA Title I Condition: Avoid Prevention of Significant Deterioration (PSD). Control efficiency and 10 panel filters major source under 40 CFR other operating parameter requirements to limit PM/PM10/PM2.5 are subject to § 52.21(b)(1)(i) and Minn. PTE below major source classification thresholds under PSD. this group R. 7007.3000 COMG 6 (Panel Minn. R. 7007.0800, subps. Requirement to operate two panel filters in series at EQUI 9 in order Filters w/Hood 2 and 14 to demonstrate compliance with the Industrial Process Equipment Capture) Rule particulate limit. TREA 9, TREA Title I Condition: Avoid Prevention of Significant Deterioration (PSD). Control efficiency and 10 panel filters major source under 40 CFR other operating parameter requirements to limit PM/PM10/PM2.5 are subject to § 52.21(b)(1)(i) and Minn. PTE below major source classification thresholds under PSD. this group R. 7007.3000 EQUI 9 (Spray Minn. R. 7011.0715, subp. Standards of Performance for post-1969 Industrial Process Booth 5) 1 Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the unit was on or after July 9, 1969. EQUI 10 (AMU Minn. R. 7011.0610, subp. Standards of Performance for Direct Heating Equipment. 1) 1 • Construction of the unit was on or after July 9, 1969; • The unit burns gaseous fuel; • The facility is located in the Twin Cities; and • The facility has less than or equal to 250 MMBtu/hr of indirect and direct heating equipment. EQUI 11 (AMU Minn. R. 7011.0610, subp. Standards of Performance for Direct Heating Equipment. 2) 1 • Construction of the unit was on or after July 9, 1969; • The unit burns gaseous fuel; • The facility is located in the Twin Cities; and • The facility has less than or equal to 250 MMBtu/hr of indirect and direct heating equipment. EQUI 12 (Spray Minn. R. 7011.0715, subp. Standards of Performance for post-1969 Industrial Process Booth MFI) 1 Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the unit was on or after July 9, 1969. EQUI 13 (AMU Minn. R. 7011.0610, subp. Standards of Performance for Direct Heating Equipment. MFI) 1 • Construction of the unit was on or after July 9, 1969; • The unit burns gaseous fuel; • The facility is located in the Twin Cities; and • The facility has less than or equal to 250 MMBtu/hr of indirect and direct heating equipment. TREA 11 (Water 40 CFR pt. 64 Compliance Assurance Monitoring (CAM) applies because the water curtain) curtain is used for the EQUI 12 spray booth to comply with the Industrial Process Equipment rule particulate limit, and EQUI 12 has an uncontrolled potential to emit greater than 100 tpy. *Location of the requirement in the permit (e.g., EQUI 1, STRU 2, etc.).

3. Technical information

3.1 Calculations of potential to emit and emissions increase analysis

Attachment 1 to this TSD contains a summary of the PTE of the Facility as well as detailed spreadsheets and supporting information prepared by the MPCA and the Permittee.

Technical Support Document, Permit Number: 12300755-102 Page 6 of 11

For the spray booths (EQUI 9, EQUI 12), unrestricted PTE for the spray booths was calculated by multiplying the highest possible material content for each pollutant, as applied (lb/gal), by the maximum application rate. The Permittee applies coatings either with or without reducers, following the material manufacturer’s recommendations on the type and quantity of reducers used. The Permittee identified the highest material contents under both scenarios (either when adding reducers, or when applying the coatings without reducers), and used the maximum value in calculating the unrestricted PTE. Note that any individual coating material could have different HAP contents, however unrestricted total HAP emissions are limited to the HAP contents of any particular coating being sprayed at a given moment. The COMG 2 VOC emission limit of 225 tons per year also effectively limits the total facility HAP emissions to 225 tons per year, because each HAP used in the coating materials is also a VOC.

Regarding particulate emissions from the spray booths, a transfer efficiency of 45% was assumed for the airless spray guns. Spray booth 5 (EQUI 9) operates under a certified hood and is controlled by two panel filters in series; this results in a capture efficiency of 80%, a control efficiency for PM, PM10, and PM2.5 of >= 85% by each panel filter from the captured portion of the particulate emissions, and an overall control efficiency of 97.8%. The spray booth at Metal Finishers Inc (EQUI 12) operates under a certified hood and is controlled by a water curtain; this results in a capture efficiency of 80%, a control efficiency for PM, PM10, and PM2.5 of >= 85% from the captured portion of particulate emissions, and an overall control efficiency of 68%. Standard control efficiencies were taken from the control equipment rule at Minn. R. 7011.0070 when used with certified hoods. The EQUI 12 spray booth is capable of applying coating either as a liquid at 45% transfer efficiency, or as a powder with an assumed 95% transfer efficiency, but is not capable of applying coating with both methods simultaneously. Under worst-case assumptions, EQUI 12 has the greatest potential to emit when applying liquid coating through airless spray guns.

For the air makeup units (EQUIs 10, 11, 13), PTE was calculated based on the maximum rated heat input for each burner multiplied by criteria and HAP pollutant emission factors from AP-42 Section 1.4 and greenhouse gas emission factors from 40 CFR pt. 98. A heat value of 1,050 BTU/scf was used to determine the natural gas fuel consumption rate at maximum burner capacity for each unit. The insignificant activities at Metal Finishers Inc all operate using natural gas combustion as well, and PTE for these activities was also calculated using the maximum rated heat input, along with emission factors from AP-42 Section 1.4 and 40 CFR pt. 98.

3.2 Monitoring In accordance with the Clean Air Act, it is the responsibility of the owner or operator of a facility to have sufficient knowledge of the facility to certify that the facility is in compliance with all applicable requirements.

In evaluating the monitoring included in the permit, the MPCA considered the following: • The likelihood of the facility violating the applicable requirements. • Whether add-on controls are necessary to meet the emission limits. • The variability of emissions over time. • The type of monitoring, process, maintenance, or control equipment data already available for the emission unit. • The technical and economic feasibility of possible periodic monitoring methods. • The kind of monitoring found on similar units elsewhere.

The table below summarizes the monitoring requirements associated with this amendment.

Technical Support Document, Permit Number: 12300755-102 Page 7 of 11 Table 9. Monitoring

Requirement What is the Subject item* (rule basis) monitoring Why is this monitoring adequate? EQUI 9 (Spray Opacity <= 20%. See COMG 4 and Other limits at COMG 4 and COMG 6 (and associated Booth 5) PM, variable COMG 6 for monitoring) ensure that this applicable requirement is depending on specific being met. These other operational limits give this unit a airflow. monitoring PTEs of 5.92 lb/hr. Applicable rule limit at maximum (Minn. R. airflow is 31.13 lb/hr. 7011.0715) EQUI 10 (AMU Opacity <= 20%. Recordkeeping: This unit uses natural gas only; therefore, the likelihood of 1) PM <= 0.30 monthly fuel violating either of the emission limits is very small. The gr/dscf. records Permittee can demonstrate that these units will continue (Minn. R. to operate such that emissions are well below the 7011.0610) emission limits by only burning natural gas. Design based PTE, using AP-42, is 0.034 lbs/hr of PM compared to the rule limit of 19.49 lbs/hr of PM. EQUI 11 (AMU Opacity <= 20%. Recordkeeping: This unit uses natural gas only; therefore, the likelihood of 2) PM <= 0.30 monthly fuel violating either of the emission limits is very small. The gr/dscf. records Permittee can demonstrate that these units will continue (Minn. R. to operate such that emissions are well below the 7011.0610) emission limits by only burning natural gas. Design based PTE, using AP-42, is 0.034 lbs/hr of PM compared to the rule limit of 19.49 lbs/hr of PM. EQUI 12 (Spray Opacity <= 20%. See TREA 11 for Other limits at TREA 11 (and associated monitoring Booth MFI) PM, variable specific through daily inspections of proper spray nozzle depending on monitoring operation, adequate water level, water recirculation, and airflow. continuous liquid flow across the booth wall) ensure that (Minn. R. this applicable requirement is being met. These other 7011.0715) operational limits give this unit a PTEs of 4.43 lb/hr. Applicable rule limit at maximum airflow is 13.01 lb/hr. EQUI 13 (AMU Opacity <= 20%. Recordkeeping: This unit uses natural gas only; therefore, the likelihood of MFI) PM <= 0.30 monthly fuel violating either of the emission limits is very small. The gr/dscf. records Permittee can demonstrate that these units will continue (Minn. R. to operate such that emissions are well below the 7011.0610) emission limits by only burning natural gas. Design based PTE, using AP-42, is 0.017 lbs/hr of PM compared to the rule limit of 13.01 lbs/hr of PM.

TREA 11 PM/PM10: overall Inspections, Daily inspections as specified in the permit ensure that the (Water curtain) control efficiency O&M, water curtain is operating according to manufacturer >= 68% recordkeeping specifications. Recordkeeping and corrective actions (Minn. R. ensure that the water curtain achieves the control 7011.0070, subp. efficiency specified by the Minnesota Performance 1(A), Title I Standard for Control Equipment on emissions from the Condition: Avoid EQUI 12 spray booth. major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Technical Support Document, Permit Number: 12300755-102 Page 8 of 11 Requirement What is the Subject item* (rule basis) monitoring Why is this monitoring adequate?

PM2.5: overall Inspections, Daily inspections as specified in the permit ensure that the control efficiency O&M, water curtain is operating according to manufacturer >= 68% recordkeeping specifications. Recordkeeping and corrective actions (Title I Condition: ensure that the water curtain achieves the specified Avoid major control efficiency on PM2.5 emissions from the EQUI 12 source under 40 spray booth, which is assumed to be equivalent to the CFR § PM10 control efficiency. 52.21(b)(1)(i) and Minn. R. 7007.3000 *Location of the requirement in the permit (e.g., EQUI 1, STRU 2, etc.).

3.3 Insignificant activities Central Sandblasting Company has several operations which are classified as insignificant activities under the MPCA’s permitting rules. These are listed in Appendix A to the permit. The following insignificant activities are part of operations at Metal Finishers Incorporated and are included in this modification.

The permit is required to include periodic monitoring for all emissions units, including insignificant activities, per EPA guidance. The insignificant activities at this Facility are only subject to general applicable requirements. Using the criteria outlined earlier in this TSD, the following table documents the justification why no additional periodic monitoring is necessary for the insignificant activities affected by this modification. See Attachment 1 of this TSD for PTE information for the insignificant activities.

Table 10. Insignificant activities

General applicable Insignificant activity emission limit Discussion Individual units with Indirect Heating These are 6 natural gas combustion units. Based on the fuels potential emissions less Equipment used and EPA published emissions factors, it is highly unlikely than 2000 lb/year of PM, variable that they could violate the applicable requirement. In addition, certain pollutants depending on airflow most of these units are operated and vented inside a building, Opacity <= 20% (with so testing for PM or opacity is not feasible. Metal Finishers Inc has exceptions) four space heaters (Minn. R. 7011.0515) (0.075 MMBtu/hr each), one furnace (0.1 Direct Heating MMBtu/hr), and one Equipment curing oven (1.5 PM, variable MMBtu/hr). Each unit depending on airflow burns natural gas, with Opacity <= 20% (with a total combined heat exceptions) input capacity of 1.9 (Minn. R. 7011.0610) MMBtu/hr. Some units are indirect heating, and some units are direct heating.

3.4 Permit organization There are a few instances where deviations from the MPCA Tempo Guidance for ordering and grouping of requirements were previously made and kept in the permit. Emissions limit PreCap requirements have been included in COMG 2. An emissions limit PreCap is a limit that applies to existing and future units, as specified at the component group. The applicable requirements of 40 CFR pt. 63, subp. MMMM have been

Technical Support Document, Permit Number: 12300755-102 Page 9 of 11 included in COMG 3. The affected source for this standard is the collection of units that meet the applicability criteria in the standard; therefore, the requirements have been included in a component group containing all of the affected units.

Controls PreCap requirements have been included in COMG 4, COMG 5, and COMG 6. Controls PreCap requirements are permit requirements that apply to existing and future control equipment, as specified at the component group. Although these panel filter requirements apply individually to each applicable panel filter, these requirements were written as a PreCap at the group level so that the Permittee may use the control efficiencies listed in the permit for any future panel filters meeting the requirements of these groups.

There are also emission unit-specific requirements listed at multiple component groups, which is a deviation from the MPCA Tempo Guidance. The Permittee accepted requirements to vent EQUI 9 to panel filters in series, in order to demonstrate compliance with the Industrial Process Equipment Rule (IPER) standard. These requirements have been listed at COMG 2, COMG 4, COMG 5, and COMG 6 following the existing permit setup for PreCap requirement. However, requirements for EQUI 12 were let at the unit level because it is controlled by the TREA 11 water curtain and not panel filters as specified for COMG 5 and COMG 6.

In this permit, federal requirements from NESHAPs are included in two different formats. The requirements for 40 CFR pt. 63, subp. MMMM are incorporated into the permit as individual permit requirements, which has historically been MPCA’s standard practice. However, the requirements for the associated General Provisions in 40 CFR pt. 63, subp. A are included in a different way.

A requirement in Section 5 of the permit lists the citations of all of the applicable parts of the General Provisions along with a reference to the permit appendix where the full text of the General Provisions is included. 40 CFR pt. 63, subp. A is included in Appendix D.

3.5 Comments received

This section to be completed after public notice.

Public Notice Period: [start date] – [end date] EPA Review Period: [start date] – [end date]

4. Permit fee assessment

Attachment 3 to this TSD contains the MPCA’s assessment of Application and Additional Points used to determine the permit application fee for this permit action as required by Minn. R. 7002.0019. The permit action includes one permit application received after the effective date of the rule (July 1, 2009). The action includes the addition of two new spray booths, EQUI 9 and EQUI 12, which are subject to 40 CFR pt. 63, subp. MMMM so 10 points are charged even though the standard considers the entire facility as subject. No points were charged for limits to remain below PSD thresholds because these previously existed in the permit at the COMG 2 PreCap and were not themselves modified by this permit action.

5. Conclusion

Based on the information provided by Central Sandblasting Company the MPCA has reasonable assurance that the proposed operation of the emission facility, as described in the Air Emission Permit No. 12300755-102 and this TSD, will not cause or contribute to a violation of applicable federal regulations and Minnesota Rules.

Staff members on permit team: Jesse Loi (permit engineer) Amrill Okonkwo (peer reviewer)

Technical Support Document, Permit Number: 12300755-102 Page 10 of 11 Jennifer Carlson (enforcement) Curtis Stock (stack testing) Beckie Olson (permit writing assistant) Laurie O'Brien (administrative support)

Tempo Activities: Major Amendment (IND20200001)

Attachments: 1. PTE summary and emissions increase calculation spreadsheets 2. Subject item inventory and requirements report 3. Points calculator

Technical Support Document, Permit Number: 12300755-102 Page 11 of 11 Attachment 1 – PTE summary and emissions increase calculation spreadsheets

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company

Facility Summary (Excluding Insignificant Activities)

Tempo SI ID No.: EQUI 7 EQUI 8 EQUI 9 EQUI 10 Description: Spray Booth 4 Cleaning Solvents Spray Booth 5 Air Make-up Unit 1 Controlled Controlled Controlled Controlled Pollutant Name CAS # Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE (lb/hr) PTE (tpy) (tpy)1 (lb/hr) PTE (tpy) (tpy)1 (lb/hr) PTE (tpy) (tpy)1 (lb/hr) PTE (tpy) (tpy)1 PM 7.40 1441.2 88.0 71.73 1441.2 95.0 3.40E-02 1.49E-01 1.49E-01 PM10 7.40 1441.2 88.0 71.73 1441.2 95.0 3.40E-02 1.49E-01 1.49E-01 PM2.5 7.40 1441.2 88.0 71.73 1441.2 95.0 3.40E-02 1.49E-01 1.49E-01 SO2 2.68E-03 1.18E-02 1.18E-02 NOx 4.47E-01 1.96E+00 1.96E+00 VOC 95.08 416.4 27.0 5.26 23.0 23.0 95.08 416.4 225.0 2.46E-02 1.08E-01 1.08E-01 CO 3.76E-01 1.65E+00 1.65E+00 Lead 2.24E-06 9.79E-06 9.79E-06 CO2 549.28 2405.9 2405.9 CH4 1.04E-02 4.53E-02 4.53E-02 N2O 1.04E-03 4.53E-03 4.53E-03 CO2e 549.85 2408.3 2408.3 4,4-Methylene Diphenyl Diisocyanate 101-68-8 13.04 57.1 27.0 13.04 57.1 57.1 Arsenic Compounds 8.94E-07 3.92E-06 3.92E-06 Benzene 71-43-2 9.39E-06 4.11E-05 4.11E-05 Beryllium Compounds 5.37E-08 2.35E-07 2.35E-07 Cadmium Compounds 4.92E-06 2.15E-05 2.15E-05 Chromium Compounds 6.26E-06 2.74E-05 2.74E-05 Cobalt Compounds 3.76E-07 1.65E-06 1.65E-06 Cumene 98-82-8 1.00 4.4 4.4 1.00 4.4 4.4 Dibutyl Phthalate 84-74-2 4.25 18.6 18.6 4.25 18.6 18.6 Dichlorobenzene 25321-22-6 5.37E-06 2.35E-05 2.35E-05 Ethylbenzene 100-41-4 13.51 59.2 27.0 13.51 59.2 59.2 Ethylene Glycol 107-21-1 2.17 9.5 9.5 2.17 9.5 9.5 Formaldehyde 50-00-0 3.35E-04 1.47E-03 1.47E-03 Glycol Ethers 5.40 23.6 23.6 5.40 23.6 23.6 Hexamethylene Diisocyanate 822-06-0 0.43 1.9 1.9 0.43 1.9 1.9 Manganese Compounds 1.70E-06 7.44E-06 7.44E-06 Mercury Compounds 1.16E-06 5.09E-06 5.09E-06 Methanol 67-56-1 13.68 59.9 27.0 13.68 59.9 59.9 Methyl Isobutyl Ketone 108-10-1 53.87 235.9 27.0 53.87 235.9 225.0 Methyl Methacrylate 80-62-6 2.60 11.4 11.4 2.60 11.4 11.4 N-Hexane 110-54-3 8.05E-03 3.53E-02 3.53E-02 Naphthalene 91-20-3 2.59 11.3 11.3 2.59 11.3 11.3 2.73E-06 1.19E-05 1.19E-05 Nickel Compounds 9.39E-06 4.11E-05 4.11E-05 Polycyclic Organic Matter 3.94E-07 1.73E-06 1.73E-06 Phenol 108-95-2 2.03 8.9 8.9 2.03 8.9 8.9 Selenium Compounds 1.07E-07 4.70E-07 4.70E-07 Styrene 100-42-5 6.30 27.6 27.0 6.30 27.6 27.6 Toluene 108-88-3 40.13 175.8 27.0 40.13 175.8 175.8 1.52E-05 6.66E-05 6.66E-05 Xylene (mixed isomers) 1330-20-7 58.05 254.3 27.0 58.05 254.3 225.0 Total HAPs 91.31 400.0 27.0 91.31 400.0 225.0 8.44E-03 3.70E-02 3.70E-02

Facility Summary Page 1 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting

Facility Summary (Excluding Insignificant Activities)

Tempo SI ID No.: EQUI 11 EQUI 12 EQUI 13 Description: Air Make-up Unit 2 Spray Booth MFI Air Make-up Unit MFI Controlled Controlled Controlled Pollutant Name CAS # Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE (lb/hr) PTE (tpy) (tpy)1 (lb/hr) PTE (tpy) (tpy)1 (lb/hr) PTE (tpy) (tpy)1 PM 3.40E-02 1.49E-01 1.49E-01 33.25 455.1 95.0 1.66E-02 7.29E-02 7.29E-02 PM10 3.40E-02 1.49E-01 1.49E-01 33.25 455.1 95.0 1.66E-02 7.29E-02 7.29E-02 PM2.5 3.40E-02 1.49E-01 1.49E-01 33.25 455.1 95.0 1.66E-02 7.29E-02 7.29E-02 SO2 2.68E-03 1.18E-02 1.18E-02 1.31E-03 5.76E-03 5.76E-03 NOx 4.47E-01 1.96E+00 1.96E+00 2.19E-01 9.59E-01 9.59E-01 VOC 2.46E-02 1.08E-01 1.08E-01 30.02 131.5 131.5 1.20E-02 5.28E-02 5.28E-02 CO 3.76E-01 1.65E+00 1.65E+00 1.84E-01 8.06E-01 8.06E-01 Lead 2.24E-06 9.79E-06 9.79E-06 1.10E-06 4.80E-06 4.80E-06 CO2 549.28 2405.9 2405.9 269.05 1178.4 1178.4 CH4 1.04E-02 4.53E-02 4.53E-02 5.07E-03 2.22E-02 2.22E-02 N2O 1.04E-03 4.53E-03 4.53E-03 5.07E-04 2.22E-03 2.22E-03 CO2e 549.85 2408.3 2408.3 269.33 1179.6 1179.6 4,4-Methylene Diphenyl Diisocyanate 101-68-8 4.12 18.0 18.0 Arsenic Compounds 8.94E-07 3.92E-06 3.92E-06 4.38E-07 1.92E-06 1.92E-06 Benzene 71-43-2 9.39E-06 4.11E-05 4.11E-05 4.60E-06 2.01E-05 2.01E-05 Beryllium Compounds 5.37E-08 2.35E-07 2.35E-07 2.63E-08 1.15E-07 1.15E-07 Cadmium Compounds 4.92E-06 2.15E-05 2.15E-05 2.41E-06 1.06E-05 1.06E-05 Chromium Compounds 6.26E-06 2.74E-05 2.74E-05 3.07E-06 1.34E-05 1.34E-05 Cobalt Compounds 3.76E-07 1.65E-06 1.65E-06 1.84E-07 8.06E-07 8.06E-07 Cumene 98-82-8 0.32 1.4 1.4 Dibutyl Phthalate 84-74-2 1.34 5.9 5.9 Dichlorobenzene 25321-22-6 5.37E-06 2.35E-05 2.35E-05 2.63E-06 1.15E-05 1.15E-05 Ethylbenzene 100-41-4 4.27 18.7 18.7 Ethylene Glycol 107-21-1 0.68 3.0 3.0 Formaldehyde 50-00-0 3.35E-04 1.47E-03 1.47E-03 1.64E-04 7.20E-04 7.20E-04 Glycol Ethers 1.70 7.5 7.5 Hexamethylene Diisocyanate 822-06-0 0.14 0.6 0.6 Manganese Compounds 1.70E-06 7.44E-06 7.44E-06 8.32E-07 3.65E-06 3.65E-06 Mercury Compounds 1.16E-06 5.09E-06 5.09E-06 5.70E-07 2.49E-06 2.49E-06 Methanol 67-56-1 4.32 18.9 18.9 Methyl Isobutyl Ketone 108-10-1 17.01 74.5 74.5 Methyl Methacrylate 80-62-6 0.82 3.6 3.6 N-Hexane 110-54-3 8.05E-03 3.53E-02 3.53E-02 3.94E-03 1.73E-02 1.73E-02 Naphthalene 91-20-3 2.73E-06 1.19E-05 1.19E-05 0.82 3.6 3.6 1.34E-06 5.85E-06 5.85E-06 Nickel Compounds 9.39E-06 4.11E-05 4.11E-05 4.60E-06 2.01E-05 2.01E-05 Polycyclic Organic Matter 3.94E-07 1.73E-06 1.73E-06 1.93E-07 8.46E-07 8.46E-07 Phenol 108-95-2 0.64 2.8 2.8 Selenium Compounds 1.07E-07 4.70E-07 4.70E-07 5.26E-08 2.30E-07 2.30E-07 Styrene 100-42-5 1.99 8.7 8.7 Toluene 108-88-3 1.52E-05 6.66E-05 6.66E-05 12.67 55.5 55.5 7.45E-06 3.26E-05 3.26E-05 Xylene (mixed isomers) 1330-20-7 18.33 80.3 80.3 Total HAPs 8.44E-03 3.70E-02 3.70E-02 28.84 126.3 126.3 4.14E-03 1.81E-02 1.81E-02

Facility Summary Page 2 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company

Facility Summary (Excluding Insignificant Activities)

Emission Unit Total (Excludes IA's) Controlled Pollutant Name CAS # Emission Rate Unrestricted Limited PTE (lb/hr) PTE (tpy) (tpy)1 PM 112.47 3338.0 95.4 (COMG 2 Limit + EQUI 10, EQUI 11 & EQUI 13) PM10 112.47 3338.0 95.4 (COMG 2 Limit + EQUI 10, EQUI 11 & EQUI 13) PM2.5 112.47 3338.0 95.4 (COMG 2 Limit + EQUI 10, EQUI 11 & EQUI 13) SO2 6.68E-03 2.93E-02 2.93E-02 NOx 1.11 4.9 4.9 VOC 225.50 987.7 225.3 (COMG 2 Limit + EQUI 10, EQUI 11 & EQUI 13) CO 0.94 4.1 4.1 Lead 5.57E-06 2.44E-05 2.44E-05 CO2 1367.62 5990.2 5990.2 CH4 2.58E-02 1.13E-01 1.13E-01 N2O 2.58E-03 1.13E-02 1.13E-02 CO2e 1369.03 5996.3 5996.3 4,4-Methylene Diphenyl Diisocyanate 101-68-8 30.19 132.2 102.1 Arsenic Compounds 2.23E-06 9.75E-06 9.75E-06 Benzene 71-43-2 2.34E-05 1.02E-04 1.02E-04 Beryllium Compounds 1.34E-07 5.85E-07 5.85E-07 Cadmium Compounds 1.22E-05 5.36E-05 5.36E-05 Chromium Compounds 1.56E-05 6.83E-05 6.83E-05 Cobalt Compounds 9.35E-07 4.10E-06 4.10E-06 Cumene 98-82-8 2.31 10.1 10.1 Dibutyl Phthalate 84-74-2 9.85 43.2 43.2 Dichlorobenzene 25321-22-6 1.34E-05 5.85E-05 5.85E-05 Ethylbenzene 100-41-4 31.28 137.0 104.9 Ethylene Glycol 107-21-1 5.02 22.0 22.0 Formaldehyde 50-00-0 8.35E-04 3.66E-03 3.66E-03 Glycol Ethers 12.50 54.7 54.7 Hexamethylene Diisocyanate 822-06-0 1.00 4.4 4.4 Manganese Compounds 4.23E-06 1.85E-05 1.85E-05 Mercury Compounds 2.89E-06 1.27E-05 1.27E-05 Methanol 67-56-1 31.68 138.8 105.8 Methyl Isobutyl Ketone 108-10-1 124.74 546.4 225.0 (Limited by COMG 2 VOC limit) Methyl Methacrylate 80-62-6 6.02 26.3 26.3 N-Hexane 110-54-3 2.00E-02 8.78E-02 8.78E-02 Naphthalene 91-20-3 5.99 26.2 26.2 Nickel Compounds 2.34E-05 1.02E-04 1.02E-04 Polycyclic Organic Matter 9.82E-07 4.30E-06 4.30E-06 Phenol 108-95-2 4.70 20.6 20.6 Selenium Compounds 2.67E-07 1.17E-06 1.17E-06 Styrene 100-42-5 14.59 63.9 63.3 Toluene 108-88-3 92.93 407.0 225.0 (Limited by COMG 2 VOC limit) Xylene (mixed isomers) 1330-20-7 134.43 588.8 225.0 (Limited by COMG 2 VOC limit) Total HAPs 211.49 926.3 225.1 (Limited by COMG 2 VOC Limit + EQUI 10, EQUI 11 & EQUI 13)

1. Limited Controlled Emissions - Emission Unit and/or Facility

Operating Limitations, if applicable: The Facility accepts a COMG 2 PM emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 and large PSEU classification under CAM The Facility accepts a COMG 2 PM10 emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 and large PSEU classification under CAM The Facility accepts a COMG 2 PM2.5 emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 and large PSEU classification under CAM The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21 EQUI 7 BACT-equivalent PM emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent PM10 emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent PM2.5 emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent VOC emission limit of less than or equal to 27.0 tons for any 12-month period

Facility Summary Page 3 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting

Facility Summary (Excluding Insignificant Activities)

Pollutant Name CAS #

PM PM10 PM2.5 SO2 NOx VOC CO Lead CO2 CH4 N2O CO2e 4,4-Methylene Diphenyl Diisocyanate 101-68-8 Arsenic Compounds Benzene 71-43-2 Beryllium Compounds Cadmium Compounds Chromium Compounds Cobalt Compounds Cumene 98-82-8 Dibutyl Phthalate 84-74-2 Dichlorobenzene 25321-22-6 Ethylbenzene 100-41-4 Ethylene Glycol 107-21-1 Formaldehyde 50-00-0 Glycol Ethers Hexamethylene Diisocyanate 822-06-0 Manganese Compounds Mercury Compounds Methanol 67-56-1 Methyl Isobutyl Ketone 108-10-1 Methyl Methacrylate 80-62-6 N-Hexane 110-54-3 Naphthalene 91-20-3 Nickel Compounds Polycyclic Organic Matter Phenol 108-95-2 Selenium Compounds Styrene 100-42-5 Toluene 108-88-3 Xylene (mixed isomers) 1330-20-7 Total HAPs

1. Limited Controlled Emissions - Emission Unit and/or Facilit

Operating Limitations, if applicable: The Facility accepts a COMG 2 PM emission limit of less th The Facility accepts a COMG 2 PM10 emission limit of less The Facility accepts a COMG 2 PM2.5 emission limit of less The Facility accepts a COMG 2 VOC emission limit of less t EQUI 7 BACT-equivalent PM emission limit of less than or e EQUI 7 BACT-equivalent PM10 emission limit of less than o EQUI 7 BACT-equivalent PM2.5 emission limit of less than o EQUI 7 BACT-equivalent VOC emission limit of less than or

Facility Summary Page 4 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company

Facility Summary (Including Insignificant Activities)

Combustion IA Total Abrasive Blasting Booths IA Total Facility Total (Including IA's) Controlled Controlled Controlled Pollutant Name CAS # Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE Emission Rate Unrestricted Limited PTE (lb/hr) PTE (tpy) (tpy) (lb/hr) PTE (tpy) (tpy)*** (lb/hr) PTE (tpy) (tpy)*** PM 7.69E-02 3.37E-01 3.37E-01 32.46 142.2 142.2 112.55 3338.3 237.9 PM10 7.69E-02 3.37E-01 3.37E-01 26.97 118.1 118.1 112.55 3338.3 213.8 PM2.5 7.69E-02 3.37E-01 3.37E-01 26.97 118.1 118.1 112.55 3338.3 213.8 SO2 6.07E-03 2.66E-02 2.66E-02 1.27E-02 5.58E-02 5.58E-02 NOx 1.01E+00 4.43E+00 4.43E+00 2.12 9.3 9.3 VOC 5.56E-02 2.44E-01 2.44E-01 225.55 987.9 225.5 CO 0.85 3.7 3.7 1.78 7.8 7.8 Lead 5.06E-06 2.21E-05 2.21E-05 1.06E-05 4.65E-05 4.65E-05 CO2 3906.77 5440.9 5440.9 5274.38 11431.0 11431.0 CH4 7.36E-02 1.03E-01 1.03E-01 9.94E-02 2.15E-01 2.15E-01 N2O 7.36E-03 1.03E-02 1.03E-02 9.94E-03 2.15E-02 2.15E-02 CO2e 1243.49 5446.5 5446.5 2612.51 11442.8 11442.8 4,4-Methylene Diphenyl Diisocyanate 101-68-8 30.19 132.2 102.1 Arsenic Compounds 7440-38-2 2.02E-06 8.86E-06 8.86E-06 4.25E-06 1.86E-05 1.86E-05 Benzene 71-43-2 2.12E-05 9.30E-05 9.30E-05 4.46E-05 1.95E-04 1.95E-04 Beryllium Compounds 7440-41-7 1.21E-07 5.32E-07 5.32E-07 2.55E-07 1.12E-06 1.12E-06 Cadmium Compounds 7440-47-3 1.11E-05 4.87E-05 4.87E-05 2.34E-05 1.02E-04 1.02E-04 Chromium Compounds 7440-47-3 1.42E-05 6.20E-05 6.20E-05 2.97E-05 1.30E-04 1.30E-04 Cobalt Compounds 7440-48-4 8.50E-07 3.72E-06 3.72E-06 1.78E-06 7.82E-06 7.82E-06 Cumene 98-82-8 2.31 10.1 10.1 Dibutyl Phthalate 84-74-2 9.85 43.2 43.2 Dichlorobenzene 25321-22-6 1.21E-05 5.32E-05 5.32E-05 2.55E-05 1.12E-04 1.12E-04 Ethylbenzene 100-41-4 31.28 137.0 104.9 Ethylene Glycol 107-21-1 5.02 22.0 22.0 Formaldehyde 50-00-0 7.59E-04 3.32E-03 3.32E-03 1.59E-03 6.98E-03 6.98E-03 Glycol Ethers 12.50 54.7 54.7 Hexamethylene Diisocyanate 822-06-0 1.00 4.4 4.4 Manganese Compounds 7439-96-5 3.84E-06 1.68E-05 1.68E-05 8.07E-06 3.54E-05 3.54E-05 Mercury Compounds 7439-97-6 2.63E-06 1.15E-05 1.15E-05 5.52E-06 2.42E-05 2.42E-05 Methanol 67-56-1 31.68 138.8 105.8 Methyl Isobutyl Ketone 108-10-1 124.74 546.4 225.0 Methyl Methacrylate 80-62-6 6.02 26.3 26.3 N-Hexane 110-54-3 1.82E-02 7.97E-02 7.97E-02 3.82E-02 1.68E-01 1.68E-01 Naphthalene 91-20-3 6.17E-06 2.70E-05 2.70E-05 5.99 26.2 26.2 Nickel Compounds 7440-02-0 2.12E-05 9.30E-05 9.30E-05 4.46E-05 1.95E-04 1.95E-04 Polycyclic Organic Matter 8.92E-07 3.91E-06 3.91E-06 1.87E-06 8.21E-06 8.21E-06 Phenol 108-95-2 4.70 20.6 20.6 Selenium Compounds 7782-49-2 2.43E-07 1.06E-06 1.06E-06 5.10E-07 2.23E-06 2.23E-06 Styrene 100-42-5 14.59 63.9 63.3 Toluene 108-88-3 2.19E-05 9.61E-05 9.61E-05 92.93 407.0 225.0 Xylene (mixed isomers) 1330-20-7 134.43 588.8 225.0 Total HAPs 1.21E-02 5.31E-02 5.31E-02 211.50 926.4 225.1

***Limited PTE for blasting booths is shown here to be equal to the uncontrolled emissions in order to demonstrate that the NSR major source threshold for PM, PM10, or PM2.5 is never exceeded, regardless of the capture or control of particulate emissions achieved by the air filtering systems at each booth. In practice, nearly all airborne blasting media is captured and contained within each blasting booth.

Facility Summary Page 5 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting

Facility Summary (Including Insignificant Activities)

Pollutant Name CAS #

PM PM10 PM2.5 SO2 NOx VOC CO Lead CO2 CH4 N2O CO2e 4,4-Methylene Diphenyl Diisocyanate 101-68-8 Arsenic Compounds 7440-38-2 Benzene 71-43-2 Beryllium Compounds 7440-41-7 Cadmium Compounds 7440-47-3 Chromium Compounds 7440-47-3 Cobalt Compounds 7440-48-4 Cumene 98-82-8 Dibutyl Phthalate 84-74-2 Dichlorobenzene 25321-22-6 Ethylbenzene 100-41-4 Ethylene Glycol 107-21-1 Formaldehyde 50-00-0 Glycol Ethers Hexamethylene Diisocyanate 822-06-0 Manganese Compounds 7439-96-5 Mercury Compounds 7439-97-6 Methanol 67-56-1 Methyl Isobutyl Ketone 108-10-1 Methyl Methacrylate 80-62-6 N-Hexane 110-54-3 Naphthalene 91-20-3 Nickel Compounds 7440-02-0 Polycyclic Organic Matter Phenol 108-95-2 Selenium Compounds 7782-49-2 Styrene 100-42-5 Toluene 108-88-3 Xylene (mixed isomers) 1330-20-7 Total HAPs

***Limited PTE for blasting booths is shown here to be equal t is never exceeded, regardless of the capture or control of captured and contained within each blasting booth.

Facility Summary Page 6 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company

Paint Data Summary 8/17 - Worst Case Material Contents

No Reducers Reducers Maximum Maximum Worst-Case Material Material Material Content Content Content Pollutant CAS (lb/gal) (lb/gal) (lb/gal) Product Name PM 26.24 24.97 26.24 COROTHANE GALVAPAK Zinc Primer Moisture Cure Urethane 1K, Gray VOC 4.147 4.174 4.174 DIMETCOTE 9 4,4-Methylene Diphenyl Diisocyanate 101-68-8 0.5718 0.5442 0.5718 COROTHANE GALVAPAK Zinc Primer Moisture Cure Urethane 1K, Gray TILE-CLAD High Solids Epoxy, Ultra Deep Base Cumene 98-82-8 0.04375 0.04375 0.04375 TILE-CLAD High Solids Epoxy, Extra White Dibutyl Phthalate 84-74-2 0.1866 0.1782 0.1866 MACROPOXY High Solids Epoxy Coating, Pure White Ethylbenzene 100-41-4 0.5925 0.5925 0.5925 MULTIPRIME 97-680 Ethylene Glycol 107-21-1 0.09510 0.09510 0.09510 PITT-TECH DTM Inhibitive Acrylic Primer - Gray Glycol Ethers N/A 0.2367 0.2261 0.2367 MACROPOXY High Solids Epoxy Coating, Pure White Hexamethylene Diisocyanate 822-06-0 0.01886 0.01863 0.01886 AMERSHIELD WHITE Methanol 67-56-1 0.6000 0.5689 0.6000 CARBOZINC 11 Methyl Isobutyl Ketone 108-10-1 2.363 2.363 2.363 CORCHEM 239 FIRE TUBE COATING Methyl Methacrylate 80-62-6 0.1139 0.1139 0.1139 PITTHANE - White Naphthalene 91-20-3 0.1135 0.1101 0.1135 AMERCOAT 385 CORCHEM 204 HIGH BUILD EPOXY - White Phenol 108-95-2 0.08900 0.08900 0.08900 CORCHEM 204 HIGH BUILD EPOXY - Grey Styrene 100-42-5 0.2736 0.2763 0.2763 KEM 4000 High Solids Acrylic Alkyd Enamel, Ultra Deep Base Toluene 108-88-3 1.760 1.656 1.760 CARBOZINC 859 Xylene (mixed isomers) 1330-20-7 2.546 2.546 2.546 KEM KROMIK Universal Metal Primer (VOC Comp.), Gray Total HAPs 4.005 4.005 4.005 CORCHEM 239 FIRE TUBE COATING

Worst Case Materials MINNESOTA POLLUTION CONTROL AGENCY EC-07 AIR QUALITY PAINTING/COATING CALCULATION FORM 520 LAFAYETTE ROAD Air Quality Permit Program ST. PAUL, MN 55155-4194

Use this form to calculate emissions from painting and coating operations. Attach sheets to show all calculations, and duplicate this form for each booth/operation or attach sheets with equivalent information. Use Form EC-08 to calculate emissions from any fuel-fired curing ovens used in this process. If the painting/coating operation emits Hazardous Air Pollutants (HAPs), fill out Forms EC-13A and/or EC-13B.

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number(s): EQUI 7 Emission Unit Description(s): Spray Booth 4 Stack/Vent Designation Number(s): STRU 4, STRU 5, STRU 6 Control Equipment Identification Number(s): TREA 4, TREA 8 Control Equipment Description(s): Mat or Panel Filters (2 in Series) Application Method: Airless Number of Spray Ports in Booth(s): 1 Flow Rate (gpm) Maximum Coating Application Rate / Port: 0.38 (gpm) Graco RAC 5 Spray Tips Used 211 0.12 Maximum Coating Application Rate: 22.8 (gal/hr) 213 0.18 Minimum Transfer Efficiency (%): 45% (Airless) 215 0.24 Oven Curing, if applicable: N/A 217 0.31 Number of Ovens: 219 0.38 Oven Fuels (if fuel fired): Total Maximum Rated Heat Input of Ovens: (mmBtu/hr)

EU STACK EU STACK EU TOTAL EU TOTAL EU TOTAL Potential-to-Emit Calculations Summary: Maximum Maximum Maximum Maximum Capture Control Control Maximum Allowed Maximum Maximum Limited Pollutant Coating VOC Coating Solids Uncontrolled Uncontrolled Efficiency Efficiency 1 Efficiency 2 Controlled Emission Controlled Controlled Controlled 1 1 2 3 4 4 5 Content Content Emissions Emissions Emissions Rate Emissions Emissions Emissions (lbs/gal) (lbs/gal) (lbs/hr) (tons/yr) (%) (%) (%) (lbs/hr) (lbs/hr) (lbs/hr) (tons/yr) (tons/yr) PM 26.24 329.05 1441.2 100% 85% 85% 7.40 26.32 7.40 32.4 88.0 PM10 26.24 329.05 1441.2 100% 85% 85% 7.40 26.32 7.40 32.4 88.0 PM2.5 26.24 329.05 1441.2 100% 85% 85% 7.40 26.32 7.40 32.4 88.0 VOC 4.17 95.08 416.4 100% 0% 0% 95.08 N/A 95.08 416.4 27.0

1. Maximum Coating Content from Paint Data Calculations

2. Maximum Controlled Emissions - Emission Unit Stack

3. Allowed Emission Rate per Minn. R. 7011.0715 - Emission Unit Stack

4. Maximum Controlled Emissions - Emission Unit Total

5. Limited Controlled Emissions - Emission Unit Based on BACT Analysis

Operating Limitations, if applicable: EQUI 7 BACT-equivalent PM emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent PM10 emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent PM2.5 emission limit of less than or equal to 88.0 tons for any 12-month period EQUI 7 BACT-equivalent VOC emission limit of less than or equal to 27.0 tons for any 12-month period The Facility accepts a COMG 2 PM emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 The Facility accepts a COMG 2 PM10 emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 The Facility accepts a COMG 2 PM2.5 emission limit of less than or equal to 95.0 tons for any 12-month period to avoid major source status under 40 CFR 52.21 The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21

EC-07 Page 1 of 1

EQUI 7 - Criteria MINNESOTA POLLUTION CONTROL AGENCY Permit Application Form EC-13A AIR QUALITY HAZARDOUS AIR POLLUTANTS 520 LAFAYETTE ROAD CALCULATION FORM (VOLATILE HAPS) ST. PAUL, MN 55155-4194

- Duplicate this form as necessary, or attach sheets with equivalent information.

Potential Emissions: Maximum Maximum Maximum Pollution Maximum Maximum Limited Volatile HAP Name CAS Coating HAP Uncontrolled Uncontrolled Control Controlled Controlled Controlled 1 Content Emissions Emissions Efficiency Emissions Emissions Emissions 2 (lb/gal) (lbs/hr) (tons/yr) (%) (lbs/hr) (tons/yr) (tons/yr) 4,4-Methylene Diphenyl Diisocyanate 101-68-8 0.5718 13.04 57.1 0% 13.04 57.1 27.0 Cumene 98-82-8 0.04375 1.00 4.4 0% 1.00 4.4 4.4 Dibutyl Phthalate 84-74-2 0.1866 4.25 18.6 0% 4.25 18.6 18.6 Ethylbenzene 100-41-4 0.5925 13.51 59.2 0% 13.51 59.2 27.0 Ethylene Glycol 107-21-1 0.09510 2.17 9.5 0% 2.17 9.5 9.5 Glycol Ethers N/A 0.2367 5.40 23.6 0% 5.40 23.6 23.6 Hexamethylene Diisocyanate 822-06-0 0.01886 0.43 1.9 0% 0.43 1.9 1.9 Methanol 67-56-1 0.6000 13.68 59.9 0% 13.68 59.9 27.0 Methyl Isobutyl Ketone 108-10-1 2.363 53.87 235.9 0% 53.87 235.9 27.0 Methyl Methacrylate 80-62-6 0.1139 2.60 11.4 0% 2.60 11.4 11.4 Naphthalene 91-20-3 0.1135 2.59 11.3 0% 2.59 11.3 11.3 Phenol 108-95-2 0.08900 2.03 8.9 0% 2.03 8.9 8.9 Styrene 100-42-5 0.2763 6.30 27.6 0% 6.30 27.6 27.0 Toluene 108-88-3 1.760 40.13 175.8 0% 40.13 175.8 27.0 Xylene (mixed isomers) 1330-20-7 2.546 58.05 254.3 0% 58.05 254.3 27.0 Total HAPs 4.005 91.31 400.0 0% 91.31 400.0 27.0

1. Maximum Coating Content from Paint Data Calculations

2. Limited Controlled Emissions - Emission Unit Based on BACT Analysis

Operating Limitations, if applicable: EQUI 7 BACT-equivalent VOC emission limit of less than or equal to 27.0 tons for any 12-month period The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21

EQUI 7 - HAPs MINNESOTA POLLUTION CONTROL AGENCY Permit Application Form EC-12 AIR QUALITY CLEAN-UP MATERIALS 520 LAFAYETTE ROAD CALCULATION FORM ST. PAUL, MN 55155-4194

- Duplicate this form as necessary, or attach sheets with equivalent information. - If the clean-up materials contain Hazardous Air Pollutants (HAPs), fill out and attach form EC-13A.

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number(s): EQUI 8 Emission Unit Description(s): Cleaning Solvents Stack/Vent Designation Number(s): N/A Control Equipment Identification Number(s): N/A Control Equipment Description(s): N/A

Calculations Summary for Clean-Up Materials:

Maximum Actual VOC Maximum Maximum Pollution Maximum Maximum Limited Clean-Up Materials Amount Amount Content Uncontrolled Uncontrolled Control Controlled Controlled Controlled 1 2 Used Used Emissions Emissions Efficiency Emissions Emissions Emissions (gal/yr) (gal/yr) (lbs/gal) (lbs/hr) (tons/yr) (%) (lbs/hr) (tons/yr) (tons/yr) Methyl Ethyl Ketone 6900.0 1380.0 6.68 5.26 23.0 0% 5.26 23.0 23.0

TOTAL: 6900.0 1380.0 5.26 23.0 5.26 23.0 23.0

Operating Limitations, if applicable: The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21

1. Maximum amount used set equal to actual amount used times a safety factor of 5 2. Actual use based upon the average of the previous three calendar years of usage data EC-12 Page 1 of 1

EQUI 8 - Cleaning MINNESOTA POLLUTION CONTROL AGENCY EC-07 AIR QUALITY PAINTING/COATING CALCULATION FORM 520 LAFAYETTE ROAD Air Quality Permit Program ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number(s): EQUI 9 Emission Unit Description(s): Spray Booth 5 Stack/Vent Designation Number(s): STRU 10, STRU 11 Control Equipment Identification Number(s): TREA 9, TREA 10 Control Equipment Description(s): Mat or Panel Filters (2 in Series) Application Method: Airless Number of Spray Ports in Booth(s): 1 Flow Rate (gpm) Maximum Coating Application Rate / Port: 0.38 (gpm) Graco RAC 5 Spray Tips Used 211 0.12 Maximum Coating Application Rate: 22.8 (gal/hr) 213 0.18 Minimum Transfer Efficiency (%): 45% (Airless) 215 0.24 Oven Curing, if applicable: N/A 217 0.31 Number of Ovens: 219 0.38 Oven Fuels (if fuel fired): Total Maximum Rated Heat Input of Ovens: (mmBtu/hr)

EU STACK EU STACK EU TOTAL EU TOTAL EU TOTAL & Potential-to-Emit Calculations Summary: FACILITY TOTAL Maximum Maximum Maximum Maximum Capture Control Control Maximum Allowed Maximum Maximum Limited Pollutant Coating VOC Coating Solids Uncontrolled Uncontrolled Efficiency Efficiency 1 Efficiency 2 Controlled Emission Controlled Controlled Controlled 1 1 2 3 4 4 5 Content Content Emissions Emissions Emissions Rate Emissions Emissions Emissions (lbs/gal) (lbs/gal) (lbs/hr) (tons/yr) (%) (%) (%) (lbs/hr) (lbs/hr) (lbs/hr) (tons/yr) (tons/yr) PM 26.24 329.05 1441.2 80% 85% 85% 5.92 31.13 71.73 314.2 95.0 PM10 26.24 329.05 1441.2 80% 85% 85% 5.92 31.13 71.73 314.2 95.0 PM2.5 26.24 329.05 1441.2 80% 85% 85% 5.92 31.13 71.73 314.2 95.0 VOC 4.17 95.08 416.4 80% 0% 0% 76.06 N/A 95.08 416.4 225.0

1. Maximum Coating Content from Paint Data Calculations

2. Maximum Controlled Emissions - Emission Unit Stack

3. Allowed Emission Rate per Minn. R. 7011.0715 - Emission Unit Stack

4. Maximum Controlled Emissions - Emission Unit Total

5. Limited Controlled Emissions - Emission Unit and/or Facility

EC-07 Page 1 of 1

EQUI 9 - Criteria MINNESOTA POLLUTION CONTROL AGENCY Permit Application Form EC-13A AIR QUALITY HAZARDOUS AIR POLLUTANTS 520 LAFAYETTE ROAD CALCULATION FORM (VOLATILE HAPS) ST. PAUL, MN 55155-4194

- Duplicate this form as necessary, or attach sheets with equivalent information.

Potential Emissions: Maximum Maximum Maximum Pollution Maximum Maximum Limited Volatile HAP Name CAS Coating HAP Uncontrolled Uncontrolled Control Controlled Controlled Controlled 1 Content Emissions Emissions Efficiency Emissions Emissions Emissions (lb/gal) (lbs/hr) (tons/yr) (%) (lbs/hr) (tons/yr) (tons/yr) 4,4-Methylene Diphenyl Diisocyanate 101-68-8 0.5718 13.04 57.1 0% 13.04 57.1 57.1 Cumene 98-82-8 0.04375 1.00 4.4 0% 1.00 4.4 4.4 Dibutyl Phthalate 84-74-2 0.1866 4.25 18.6 0% 4.25 18.6 18.6 Ethylbenzene 100-41-4 0.5925 13.51 59.2 0% 13.51 59.2 59.2 Ethylene Glycol 107-21-1 0.09510 2.17 9.5 0% 2.17 9.5 9.5 Glycol Ethers N/A 0.2367 5.40 23.6 0% 5.40 23.6 23.6 Hexamethylene Diisocyanate 822-06-0 0.01886 0.43 1.9 0% 0.43 1.9 1.9 Methanol 67-56-1 0.6000 13.68 59.9 0% 13.68 59.9 59.9 Methyl Isobutyl Ketone 108-10-1 2.363 53.87 235.9 0% 53.87 235.9 225.0 Methyl Methacrylate 80-62-6 0.1139 2.60 11.4 0% 2.60 11.4 11.4 Naphthalene 91-20-3 0.1135 2.59 11.3 0% 2.59 11.3 11.3 Phenol 108-95-2 0.08900 2.03 8.9 0% 2.03 8.9 8.9 Styrene 100-42-5 0.2763 6.30 27.6 0% 6.30 27.6 27.6 Toluene 108-88-3 1.760 40.13 175.8 0% 40.13 175.8 175.8 Xylene (mixed isomers) 1330-20-7 2.546 58.05 254.3 0% 58.05 254.3 225.0 Total HAPs 4.005 91.31 400.0 0% 91.31 400.0 225.0

1. Maximum Coating Content from Paint Data Calculations

Operating Limitations, if applicable: The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21

EQUI 9 - HAPs MINNESOTA POLLUTION CONTROL AGENCY EXTERNAL COMBUSTION AIR QUALITY CALCULATION FORM 520 LAFAYETTE ROAD ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number: EQUI 10 Emission Unit Description: Air Make-up Unit (AMU) 1 Stack/Vent Identification Number: STRU 12 Control Equipment Identification Number: Control Equipment Description: Maximum Rated Burner Capacity: 4.70 (MM BTU/hr) Primary Fuel Type: Natural Gas Heat Value: 1,050 (BTU/cf) Per MPCA Fuel Consumption Rate: 4,472 (CF/hr) 2-Year Average Actual Annual Fuel Use: (CF)

Calculations Summary - Criteria

Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual Pollutant AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) PM 0.0000076 (Lbs/CF) 3.40E-02 1.49E-01 0% 1.49E-01 1.49E-01 PM10 0.0000076 (Lbs/CF) 3.40E-02 1.49E-01 0% 1.49E-01 1.49E-01 PM2.5 0.0000076 (Lbs/CF) 3.40E-02 1.49E-01 0% 1.49E-01 1.49E-01 SOx 0.0000006 (Lbs/CF) 2.68E-03 1.18E-02 0% 1.18E-02 1.18E-02 NOx 0.0001000 (Lbs/CF) 4.47E-01 1.96E+00 0% 1.96E+00 1.96E+00 VOC 0.0000055 (Lbs/CF) 2.46E-02 1.08E-01 0% 1.08E-01 1.08E-01 CO 0.0000840 (Lbs/CF) 3.76E-01 1.65E+00 0% 1.65E+00 1.65E+00 Lead 5.00E-10 (Lbs/CF) 2.24E-06 9.79E-06 0% 9.79E-06 9.79E-06

Calculations Summary - GHG

Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual Pollutant 40CFR98 Subp C Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr)

CO2 116.98 (Lbs/mmBtu) 549.28 2405.9 0% 2405.9 2405.9

CH4 0.0022 (Lbs/mmBtu) 1.04E-02 4.53E-02 0% 4.53E-02 4.53E-02

N2O 0.0002 (Lbs/mmBtu) 1.04E-03 4.53E-03 0% 4.53E-03 4.53E-03

CO2e 117.10 (Lbs/mmBtu) 549.85 2408.3 0% 2408.3 2408.3

EQUI 10 Page 13 Calculations Summary - HAPs

HAP Name Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual (CAS) AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) Arsenic (7440-38-2) 2.00E-10 (Lbs/CF) 8.94E-07 3.92E-06 0% 3.92E-06 3.92E-06 Benzene (71-43-2) 2.10E-09 (Lbs/CF) 9.39E-06 4.11E-05 0% 4.11E-05 4.11E-05 Beryllium (7440-41-7) 1.20E-11 (Lbs/CF) 5.37E-08 2.35E-07 0% 2.35E-07 2.35E-07 Cadmium (7440-43-9) 1.10E-09 (Lbs/CF) 4.92E-06 2.15E-05 0% 2.15E-05 2.15E-05 Chromium (7440-47-3) 1.40E-09 (Lbs/CF) 6.26E-06 2.74E-05 0% 2.74E-05 2.74E-05 Cobalt (7440-48-4) 8.40E-11 (Lbs/CF) 3.76E-07 1.65E-06 0% 1.65E-06 1.65E-06 Dichlorobenzene (25321-22-6) 1.20E-09 (Lbs/CF) 5.37E-06 2.35E-05 0% 2.35E-05 2.35E-05 Formaldehyde (50-00-0) 7.50E-08 (Lbs/CF) 3.35E-04 1.47E-03 0% 1.47E-03 1.47E-03 Manganese (7439-96-5) 3.80E-10 (Lbs/CF) 1.70E-06 7.44E-06 0% 7.44E-06 7.44E-06 Mercury (7439-97-6) 2.60E-10 (Lbs/CF) 1.16E-06 5.09E-06 0% 5.09E-06 5.09E-06 N-Hexane (110-54-3) 1.80E-06 (Lbs/CF) 8.05E-03 3.53E-02 0% 3.53E-02 3.53E-02 Naphthalene (91-20-3) 6.10E-10 (Lbs/CF) 2.73E-06 1.19E-05 0% 1.19E-05 1.19E-05 Nickel (7440-02-0) 2.10E-09 (Lbs/CF) 9.39E-06 4.11E-05 0% 4.11E-05 4.11E-05 Polycyclic Organic Matter 8.82E-11 (Lbs/CF) 3.94E-07 1.73E-06 0% 1.73E-06 1.73E-06 Selenium (7782-49-2) 2.40E-11 (Lbs/CF) 1.07E-07 4.70E-07 0% 4.70E-07 4.70E-07 Toluene (108-88-3) 3.40E-09 (Lbs/CF) 1.52E-05 6.66E-05 0% 6.66E-05 6.66E-05 Total 8.44E-03 3.70E-02 3.70E-02 3.70E-02

EQUI 10 Page 14 MINNESOTA POLLUTION CONTROL AGENCY EXTERNAL COMBUSTION AIR QUALITY CALCULATION FORM 520 LAFAYETTE ROAD ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number: EQUI 11 Emission Unit Description: Air Make-up Unit (AMU) 2 Stack/Vent Identification Number: STRU 13 Control Equipment Identification Number: Control Equipment Description: Maximum Rated Burner Capacity: 4.70 (MM BTU/hr) Primary Fuel Type: Natural Gas Heat Value: 1,050 (BTU/cf) Per MPCA Fuel Consumption Rate: 4,472 (CF/hr) 2-Year Average Actual Annual Fuel Use: (CF)

Calculations Summary - Criteria

Calculations Summary - GHG

CO2 116.98 (Lbs/mmBtu) 549.28 2405.9 0% 2405.9 2405.9

CH4 0.0022 (Lbs/mmBtu) 1.04E-02 4.53E-02 0% 4.53E-02 4.53E-02

N2O 0.0002 (Lbs/mmBtu) 1.04E-03 4.53E-03 0% 4.53E-03 4.53E-03

CO2e 117.10 (Lbs/mmBtu) 549.85 2408.3 0% 2408.3 2408.3

EQUI 11 Page 15 Calculations Summary - HAPs

EQUI 11 Page 16 MINNESOTA POLLUTION CONTROL AGENCY EC-07 AIR QUALITY PAINTING/COATING CALCULATION FORM 520 LAFAYETTE ROAD Air Quality Permit Program ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number(s): EQUI 12 Emission Unit Description(s): Spray Booth MFI Stack/Vent Designation Number(s): STRU 15 Control Equipment Identification Number(s): TREA 11 Control Equipment Description(s): Water Curtain Application Method: Airless, Powder Number of Spray Ports in Booth(s) (Airless): 1 Number of Spray Ports in Booth(s) (Powder): 2 Flow Rate (gpm) Maximum Coating Application Rate / Port (Airless): 0.12 (gpm) Graco RAC 5 Spray Tips Used 211 0.12 Maximum Coating Application Rate (Airless): 7.2 (gal/hr) Minimum Transfer Efficiency (%) (Airless): 45% (Airless) Maximum Coating Application Rate / Port (Powder): 60 (lb/hr) Maximum Coating Application Rate (Powder): 120 (lb/hr) Minimum Transfer Efficiency (%) (Powder): 95% (Powder) Oven Curing, if applicable: Number of Ovens: 1 Oven Fuels (if fuel fired): Natural Gas Total Maximum Rated Heat Input of Ovens: 1.5 (mmBtu/hr)

EU STACK EU STACK EU TOTAL EU TOTAL EU TOTAL &/OR Potential-to-Emit Calculations Summary (Airless): FACILITY TOTAL Maximum Maximum Maximum Maximum Capture Control Control Maximum Allowed Maximum Maximum Limited Pollutant Coating VOC Coating Solids Uncontrolled Uncontrolled Efficiency Efficiency 1 Efficiency 2 Controlled Emission Controlled Controlled Controlled 1 1 2 3 4 4 5 Content Content Emissions Emissions Emissions Rate Emissions Emissions Emissions (lbs/gal) (lbs/gal) (lbs/hr) (tons/yr) (%) (%) (%) (lbs/hr) (lbs/hr) (lbs/hr) (tons/yr) (tons/yr) PM 26.24 103.91 455.1 80% 85% 0% 12.47 13.01 33.25 145.6 95.0 PM10 26.24 103.91 455.1 80% 85% 0% 12.47 13.01 33.25 145.6 95.0 PM2.5 26.24 103.91 455.1 80% 85% 0% 12.47 13.01 33.25 145.6 95.0 VOC 4.17 30.02 131.5 80% 0% 0% 24.02 N/A 30.02 131.5 131.5

EU STACK EU STACK EU TOTAL EU TOTAL EU TOTAL &/OR Potential-to-Emit Calculations Summary (Powder): FACILITY TOTAL Maximum Maximum Maximum Maximum Capture Control Control Maximum Allowed Maximum Maximum Limited Pollutant Coating VOC Coating Solids Uncontrolled Uncontrolled Efficiency Efficiency 1 Efficiency 2 Controlled Emission Controlled Controlled Controlled 1 1 2 3 4 4 5 Content Content Emissions Emissions Emissions Rate Emissions Emissions Emissions (lbs/gal) (lbs/gal) (lbs/hr) (tons/yr) (%) (%) (%) (lbs/hr) (lbs/hr) (lbs/hr) (tons/yr) (tons/yr) PM N/A 6.00 26.3 80% 85% 0% 0.72 13.01 1.92 8.4 8.4 PM10 N/A 6.00 26.3 80% 85% 0% 0.72 13.01 1.92 8.4 8.4 PM2.5 N/A 6.00 26.3 80% 85% 0% 0.72 13.01 1.92 8.4 8.4 VOC N/A 80% 0% 0%

EU STACK EU STACK EU TOTAL EU TOTAL EU TOTAL &/OR Potential-to-Emit Calculations Summary (Worst Case): FACILITY TOTAL Maximum Maximum Maximum Allowed Maximum Maximum Limited Pollutant Uncontrolled Uncontrolled Controlled Emission Controlled Controlled Controlled 2 3 4 4 5 Emissions Emissions Emissions Rate Emissions Emissions Emissions (lbs/hr) (tons/yr) (lbs/hr) (lbs/hr) (lbs/hr) (tons/yr) (tons/yr) PM 103.91 455.1 12.47 13.01 33.25 145.6 95.0 PM10 103.91 455.1 12.47 13.01 33.25 145.6 95.0 PM2.5 103.91 455.1 12.47 13.01 33.25 145.6 95.0 VOC 30.02 131.5 24.02 N/A 30.02 131.5 131.5

1. Maximum Coating Content from Paint Data Calculations

2. Maximum Controlled Emissions - Emission Unit Stack

3. Allowed Emission Rate per Minn. R. 7011.0715 - Emission Unit Stack

4. Maximum Controlled Emissions - Emission Unit Total

5. Limited Controlled Emissions - Emission Unit and/or Facility

EC-07 Page 1 of 1

EQUI 12 - Criteria MINNESOTA POLLUTION CONTROL AGENCY Permit Application Form EC-13A AIR QUALITY HAZARDOUS AIR POLLUTANTS 520 LAFAYETTE ROAD CALCULATION FORM (VOLATILE HAPS) ST. PAUL, MN 55155-4194

- Duplicate this form as necessary, or attach sheets with equivalent information.

Potential Emissions: Maximum Maximum Maximum Pollution Maximum Maximum Limited Volatile HAP Name CAS Coating HAP Uncontrolled Uncontrolled Control Controlled Controlled Controlled 1 Content Emissions Emissions Efficiency Emissions Emissions Emissions (lb/gal) (lbs/hr) (tons/yr) (%) (lbs/hr) (tons/yr) (tons/yr) 4,4-Methylene Diphenyl Diisocyanate 101-68-8 0.5718 4.12 18.0 0% 4.12 18.0 18.0 Cumene 98-82-8 0.04375 0.32 1.4 0% 0.32 1.4 1.4 Dibutyl Phthalate 84-74-2 0.1866 1.34 5.9 0% 1.34 5.9 5.9 Ethylbenzene 100-41-4 0.5925 4.27 18.7 0% 4.27 18.7 18.7 Ethylene Glycol 107-21-1 0.09510 0.68 3.0 0% 0.68 3.0 3.0 Glycol Ethers N/A 0.2367 1.70 7.5 0% 1.70 7.5 7.5 Hexamethylene Diisocyanate 822-06-0 0.01886 0.14 0.6 0% 0.14 0.6 0.6 Methanol 67-56-1 0.6000 4.32 18.9 0% 4.32 18.9 18.9 Methyl Isobutyl Ketone 108-10-1 2.363 17.01 74.5 0% 17.01 74.5 74.5 Methyl Methacrylate 80-62-6 0.1139 0.82 3.6 0% 0.82 3.6 3.6 Naphthalene 91-20-3 0.1135 0.82 3.6 0% 0.82 3.6 3.6 Phenol 108-95-2 0.08900 0.64 2.8 0% 0.64 2.8 2.8 Styrene 100-42-5 0.2763 1.99 8.7 0% 1.99 8.7 8.7 Toluene 108-88-3 1.760 12.67 55.5 0% 12.67 55.5 55.5 Xylene (mixed isomers) 1330-20-7 2.546 18.33 80.3 0% 18.33 80.3 80.3 Total HAPs 4.005 28.84 126.3 0% 28.84 126.3 126.3

1. Maximum Coating Content from Paint Data Calculations

Operating Limitations, if applicable: The Facility accepts a COMG 2 VOC emission limit of less than or equal to 225 tons for any 12-month period to avoid major source status under 40 CFR 52.21

EQUI 12 - HAPs MINNESOTA POLLUTION CONTROL AGENCY EXTERNAL COMBUSTION AIR QUALITY CALCULATION FORM 520 LAFAYETTE ROAD ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number: EQUI 13 Emission Unit Description: Air Make-up Unit (AMU) MFI Stack/Vent Identification Number: STRU 16 Control Equipment Identification Number: Control Equipment Description: Maximum Rated Burner Capacity: 2.30 (MM BTU/hr) Primary Fuel Type: Natural Gas Heat Value: 1,050 (BTU/cf) Per MPCA Fuel Consumption Rate: 2,190 (CF/hr) 2-Year Average Actual Annual Fuel Use: (CF)

Calculations Summary - Criteria

Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual Pollutant AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) PM 0.0000076 (Lbs/CF) 1.66E-02 7.29E-02 0% 7.29E-02 7.29E-02 PM10 0.0000076 (Lbs/CF) 1.66E-02 7.29E-02 0% 7.29E-02 7.29E-02 PM2.5 0.0000076 (Lbs/CF) 1.66E-02 7.29E-02 0% 7.29E-02 7.29E-02 SOx 0.0000006 (Lbs/CF) 1.31E-03 5.76E-03 0% 5.76E-03 5.76E-03 NOx 0.0001000 (Lbs/CF) 2.19E-01 9.59E-01 0% 9.59E-01 9.59E-01 VOC 0.0000055 (Lbs/CF) 1.20E-02 5.28E-02 0% 5.28E-02 5.28E-02 CO 0.0000840 (Lbs/CF) 1.84E-01 8.06E-01 0% 8.06E-01 8.06E-01 Lead 5.00E-10 (Lbs/CF) 1.10E-06 4.80E-06 0% 4.80E-06 4.80E-06

Calculations Summary - GHG

CO2 116.98 (Lbs/mmBtu) 269.05 1178.4 0% 1178.4 1178.4

CH4 0.0022 (Lbs/mmBtu) 5.07E-03 2.22E-02 0% 2.22E-02 2.22E-02

N2O 0.0002 (Lbs/mmBtu) 5.07E-04 2.22E-03 0% 2.22E-03 2.22E-03

CO2e 117.10 (Lbs/mmBtu) 269.33 1179.6 0% 1179.6 1179.6

EQUI 13 Page 19 Calculations Summary - HAPs

HAP Name Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual (CAS) AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) Arsenic (7440-38-2) 2.00E-10 (Lbs/CF) 4.38E-07 1.92E-06 0% 1.92E-06 1.92E-06 Benzene (71-43-2) 2.10E-09 (Lbs/CF) 4.60E-06 2.01E-05 0% 2.01E-05 2.01E-05 Beryllium (7440-41-7) 1.20E-11 (Lbs/CF) 2.63E-08 1.15E-07 0% 1.15E-07 1.15E-07 Cadmium (7440-43-9) 1.10E-09 (Lbs/CF) 2.41E-06 1.06E-05 0% 1.06E-05 1.06E-05 Chromium (7440-47-3) 1.40E-09 (Lbs/CF) 3.07E-06 1.34E-05 0% 1.34E-05 1.34E-05 Cobalt (7440-48-4) 8.40E-11 (Lbs/CF) 1.84E-07 8.06E-07 0% 8.06E-07 8.06E-07 Dichlorobenzene (25321-22-6) 1.20E-09 (Lbs/CF) 2.63E-06 1.15E-05 0% 1.15E-05 1.15E-05 Formaldehyde (50-00-0) 7.50E-08 (Lbs/CF) 1.64E-04 7.20E-04 0% 7.20E-04 7.20E-04 Manganese (7439-96-5) 3.80E-10 (Lbs/CF) 8.32E-07 3.65E-06 0% 3.65E-06 3.65E-06 Mercury (7439-97-6) 2.60E-10 (Lbs/CF) 5.70E-07 2.49E-06 0% 2.49E-06 2.49E-06 N-Hexane (110-54-3) 1.80E-06 (Lbs/CF) 3.94E-03 1.73E-02 0% 1.73E-02 1.73E-02 Naphthalene (91-20-3) 6.10E-10 (Lbs/CF) 1.34E-06 5.85E-06 0% 5.85E-06 5.85E-06 Nickel (7440-02-0) 2.10E-09 (Lbs/CF) 4.60E-06 2.01E-05 0% 2.01E-05 2.01E-05 Polycyclic Organic Matter 8.82E-11 (Lbs/CF) 1.93E-07 8.46E-07 0% 8.46E-07 8.46E-07 Selenium (7782-49-2) 2.40E-11 (Lbs/CF) 5.26E-08 2.30E-07 0% 2.30E-07 2.30E-07 Toluene (108-88-3) 3.40E-09 (Lbs/CF) 7.45E-06 3.26E-05 0% 3.26E-05 3.26E-05 Total 4.14E-03 1.81E-02 1.81E-02 1.81E-02

EQUI 13 Page 20 AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company

Minn. R. 7011.0715 - Standards of Performance for Post-1969 Industrial Process Equipment (IPER)

EQUI 7 (Spray Booth 4)

IPER via Mass Throughput: Minn. Rules 7011.0730 Table 1 Maximum Maximum Emissions Throughput (lbs/hr) Emissions (lbs/hr) (Tons/Year) 329 1.17 5.1

IPER via Volumetric Flowrate: Minn. Rules 7011.0735 Table 2

Volumetric Flowrate Emissions Maximum Emissions Maximum Emissions (DSCFM < 1,000,000) (gr/DSCF) (lbs/hr) (Tons/Year) 62,400 0.049 26.32 115.28

IPER Emission Limit: 26.32 #/hr

7011.0715 Max PM 0.30 gr/scf

7011.0715 Max PM 160.46 lbs/hr

PM Limit 26.32 lbs/hr Note: This limit applies to ONLY what is going up the stack;

EQUI 9 (Spray Booth 5)

IPER via Mass Throughput: Minn. Rules 7011.0730 Table 1 Maximum Maximum Emissions Throughput (lbs/hr) Emissions (lbs/hr) (Tons/Year) 329 1.17 5.1

IPER via Volumetric Flowrate: Minn. Rules 7011.0735 Table 2

Volumetric Flowrate Emissions Maximum Emissions Maximum Emissions (DSCFM < 1,000,000) (gr/DSCF) (lbs/hr) (Tons/Year) 80,000 0.045 31.13 136.37

IPER Emission Limit: 31.13 #/hr

7011.0715 Max PM 0.30 gr/scf

7011.0715 Max PM 205.71 lbs/hr

PM Limit 31.13 lbs/hr Note: This limit applies to ONLY what is going up the stack;

EQUI 12 (Spray Booth MFI)

IPER via Mass Throughput: Minn. Rules 7011.0730 Table 1 Maximum Maximum Emissions Throughput (lbs/hr) Emissions (lbs/hr) (Tons/Year) 104 0.57 2.5

IPER via Volumetric Flowrate: Minn. Rules 7011.0735 Table 2

Volumetric Flowrate Emissions Maximum Emissions Maximum Emissions (DSCFM < 1,000,000) (gr/DSCF) (lbs/hr) (Tons/Year) 22,000 0.069 13.01 56.98

IPER Emission Limit: 13.01 #/hr

7011.0715 Max PM 0.30 gr/scf

7011.0715 Max PM 56.57 lbs/hr

PM Limit 13.01 lbs/hr Note: This limit applies to ONLY what is going up the stack;

IPER Calculator MINNESOTA POLLUTION CONTROL AGENCY EXTERNAL COMBUSTION AIR QUALITY CALCULATION FORM 520 LAFAYETTE ROAD ST. PAUL, MN 55155-4194

AQ Facility ID No.: 12300755 AQ File No.: 4424 Facility Name: Central Sandblasting Company Emission Unit Identification Number: Shop 2 Air Makeup Unit Minn Rule 7007.1300 Subp. 4 Emission Unit Description: Insignificant Activity Stack/Vent Identification Number: Control Equipment Identification Number: Control Equipment Description: Maximum Rated Burner Capacity: 6.74 (MM BTU/hr) Primary Fuel Type: Natural Gas Heat Value: 1,050 (BTU/cf) Per MPCA Fuel Consumption Rate: 6,418 (CF/hr) 2-Year Average Actual Annual Fuel Use: (CF)

Calculations Summary - Criteria

Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual Pollutant AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) PM 0.0000076 (Lbs/CF) 4.88E-02 2.14E-01 0% 2.14E-01 2.14E-01 PM10 0.0000076 (Lbs/CF) 4.88E-02 2.14E-01 0% 2.14E-01 2.14E-01 PM2.5 0.0000076 (Lbs/CF) 4.88E-02 2.14E-01 0% 2.14E-01 2.14E-01 SOx 0.0000006 (Lbs/CF) 3.85E-03 1.69E-02 0% 1.69E-02 1.69E-02 7007.1300 PTE < 25% NOx 0.0001000 (Lbs/CF) 6.42E-01 2.81E+00 0% 2.81E+00 2.81E+00 Subp 5 Subp 5 VOC 0.0000055 (Lbs/CF) 3.53E-02 1.55E-01 0% 1.55E-01 1.55E-01 Threshold Threshold CO 0.0000840 (Lbs/CF) 5.39E-01 2.36E+00 0% 2.36E+00 2.36E+00 (tons/yr) Lead 5.00E-10 (Lbs/CF) 3.21E-06 1.41E-05 0% 1.41E-05 1.41E-05 0.0100 YES

Calculations Summary - GHG

CO2 116.98 (Lbs/mmBtu) 788.33 3452.9 0% 3452.9 3452.9

CH4 0.0022 (Lbs/mmBtu) 1.49E-02 6.51E-02 0% 6.51E-02 6.51E-02

N2O 0.0002 (Lbs/mmBtu) 1.49E-03 6.51E-03 0% 6.51E-03 6.51E-03

CO2e 117.10 (Lbs/mmBtu) 789.15 3456.5 0% 3456.5 3456.5

Calculations Summary - HAPs

HAP Name Emission Factors Emission Emission Maximum Actual Pollution Maximum Limited Actual 7007.1300 PTE < 25% (CAS) AP-42 1.4 (07/98) & Factor Rate Uncontrolled Uncontrolled Control Controlled Controlled Controlled Subp 5 Subp 5 Fire SCC 10300603 Units Emissions Emissions Efficiency Emissions Emissions Emissions Threshold Threshold (lbs/hr) (tons/yr) (tons/yr) (%) (tons/yr) (tons/yr) (tons/yr) (tons/yr) Arsenic (7440-38-2) 2.00E-10 (Lbs/CF) 1.28E-06 5.62E-06 0% 5.62E-06 5.62E-06 0.0050 YES Benzene (71-43-2) 2.10E-09 (Lbs/CF) 1.35E-05 5.90E-05 0% 5.90E-05 5.90E-05 2.0000 YES Beryllium (7440-41-7) 1.20E-11 (Lbs/CF) 7.70E-08 3.37E-07 0% 3.37E-07 3.37E-07 0.0080 YES Cadmium (7440-43-9) 1.10E-09 (Lbs/CF) 7.06E-06 3.09E-05 0% 3.09E-05 3.09E-05 0.0100 YES Chromium (7440-47-3) 1.40E-09 (Lbs/CF) 8.99E-06 3.94E-05 0% 3.94E-05 3.94E-05 5.0000 YES Cobalt (7440-48-4) 8.40E-11 (Lbs/CF) 5.39E-07 2.36E-06 0% 2.36E-06 2.36E-06 0.1000 YES Dichlorobenzene (25321-22-6) 1.20E-09 (Lbs/CF) 7.70E-06 3.37E-05 0% 3.37E-05 3.37E-05 N/A Formaldehyde (50-00-0) 7.50E-08 (Lbs/CF) 4.81E-04 2.11E-03 0% 2.11E-03 2.11E-03 2.0000 YES Manganese (7439-96-5) 3.80E-10 (Lbs/CF) 2.44E-06 1.07E-05 0% 1.07E-05 1.07E-05 0.8000 YES Mercury (7439-97-6) 2.60E-10 (Lbs/CF) 1.67E-06 7.31E-06 0% 7.31E-06 7.31E-06 0.0100 YES N-Hexane (110-54-3) 1.80E-06 (Lbs/CF) 1.16E-02 5.06E-02 0% 5.06E-02 5.06E-02 10.0000 YES Naphthalene (91-20-3) 6.10E-10 (Lbs/CF) 3.92E-06 1.71E-05 0% 1.71E-05 1.71E-05 10.0000 YES Nickel (7440-02-0) 2.10E-09 (Lbs/CF) 1.35E-05 5.90E-05 0% 5.90E-05 5.90E-05 1.0000 YES Polycyclic Organic Matter 8.82E-11 (Lbs/CF) 5.66E-07 2.48E-06 0% 2.48E-06 2.48E-06 0.0100 YES Selenium (7782-49-2) 2.40E-11 (Lbs/CF) 1.54E-07 6.75E-07 0% 6.75E-07 6.75E-07 0.1000 YES Toluene (108-88-3) 3.40E-09 (Lbs/CF) 2.18E-05 9.56E-05 0% 9.56E-05 9.56E-05 10.0000 YES Total 1.21E-02 5.31E-02 5.31E-02 5.31E-02

IA - 1 AQ Facility ID No.: 12300755 AQ File No.: 4424 0.1 Facility Name: Central Sandblasting Company

Insignificant Activities - Minn. R. 7007.1300, subp. 3(F) Criteria Pollutants GHG

Pollutant CO NOx SO2 PM/PM10 VOC Lead CO2 CH4 N2O CO2e Minn. R. 7007.1300, subp. 3(F) Threshold (tpy) 2.00E+00 1.00E+00 1.00E+00 1.00E+00 1.00E+00 1.00E+03 Natural Gas External Combustion Emission Factor (lb/mmscf) 84 100 0.6 7.6 5.5 5.00E-04 --- Natural Gas Combustion Emission Factor (lb/mmBtu) 8.00E-02 9.52E-02 5.71E-04 7.24E-03 5.24E-03 4.76E-07 1.17E+02 2.20E-03 2.20E-04 117 Maximum Rated Burner IA Unit Description Type Capacity (mmBtu/hr) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) 2 Shop 2 IR Tube Space Heater Space Heater 0.125 4.38E-02 5.21E-02 3.13E-04 3.96E-03 2.87E-03 2.61E-07 6.40E+01 1.21E-03 1.21E-04 6.41E+01 3 Shop 2 IR Tube Space Heater Space Heater 0.125 4.38E-02 5.21E-02 3.13E-04 3.96E-03 2.87E-03 2.61E-07 6.40E+01 1.21E-03 1.21E-04 6.41E+01 4 Shop 2 IR Tube Space Heater Space Heater 0.125 4.38E-02 5.21E-02 3.13E-04 3.96E-03 2.87E-03 2.61E-07 6.40E+01 1.21E-03 1.21E-04 6.41E+01 5 Shop 1 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 6 Shop 1 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 7 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 8 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 9 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 10 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 11 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 12 Shop 3 IR Tube Space Heater Space Heater 0.175 6.13E-02 7.30E-02 4.38E-04 5.55E-03 4.02E-03 3.65E-07 8.97E+01 1.69E-03 1.69E-04 8.98E+01 13 Shop 3 Rooftop Heating Unit Furnace 0.1 3.50E-02 4.17E-02 2.50E-04 3.17E-03 2.29E-03 2.09E-07 5.12E+01 9.66E-04 9.66E-05 5.13E+01 14 Shop 3 Rooftop Heating Unit Furnace 0.1 3.50E-02 4.17E-02 2.50E-04 3.17E-03 2.29E-03 2.09E-07 5.12E+01 9.66E-04 9.66E-05 5.13E+01 15 MFI IR Space Heater Space Heater 0.075 2.63E-02 3.13E-02 1.88E-04 2.38E-03 1.72E-03 1.56E-07 3.84E+01 7.24E-04 7.24E-05 3.85E+01 16 MFI IR Space Heater Space Heater 0.075 2.63E-02 3.13E-02 1.88E-04 2.38E-03 1.72E-03 1.56E-07 3.84E+01 7.24E-04 7.24E-05 3.85E+01 17 MFI IR Space Heater Space Heater 0.075 2.63E-02 3.13E-02 1.88E-04 2.38E-03 1.72E-03 1.56E-07 3.84E+01 7.24E-04 7.24E-05 3.85E+01 18 MFI IR Space Heater Space Heater 0.075 2.63E-02 3.13E-02 1.88E-04 2.38E-03 1.72E-03 1.56E-07 3.84E+01 7.24E-04 7.24E-05 3.85E+01 19 MFI Rooftop Heating Unit Furnace 0.105 3.68E-02 4.38E-02 2.63E-04 3.33E-03 2.41E-03 2.19E-07 5.38E+01 1.01E-03 1.01E-04 5.39E+01 20 MFI Curing Oven Oven 1.5 5.26E-01 6.26E-01 3.75E-03 4.76E-02 3.44E-02 3.13E-06 7.69E+02 1.45E-02 1.45E-03 7.69E+02

Number Maximum Rated Burner of Units Capacity (mmBtu/hr) CO NOx SO2 PM/PM10 VOC Lead CO2 CH4 N2O CO2e Space Heaters (total) 15 2.075 7.27E-01 8.66E-01 5.19E-03 6.58E-02 4.76E-02 4.33E-06 1.06E+03 2.00E-02 2.00E-03 1.06E+03 Furnaces (total) 3 0.305 1.07E-01 1.27E-01 7.63E-04 9.67E-03 7.00E-03 6.36E-07 1.56E+02 2.95E-03 2.95E-04 1.56E+02 Ovens (total) 1 1.5 5.26E-01 6.26E-01 3.75E-03 4.76E-02 3.44E-02 3.13E-06 7.69E+02 1.45E-02 1.45E-03 7.69E+02 Minn. R. 7007.1300, subp. 3(F) Total: 19 3.88 1.36E+00 1.62E+00 9.71E-03 1.23E-01 8.90E-02 8.09E-06 1.99E+03 3.75E-02 3.75E-03 1.99E+03

IA - 2 to 20 Page 23 AQ Facility ID No.: 12300755 AQ File No.: 4424 0.1 Facility Name: Central Sandblasting Company

Insignificant Activities - Minn. R. 7007.1300, subp. 3(F) Hazardous Air Pollutants (HAPs) Arsenic Beryllium Cadmium Chromium Cobalt Pollutant Compounds Benzene Compounds Compounds Compounds Compounds Dichlorobenzene Formaldehyde Minn. R. 7007.1300, subp. 3(F) Threshold (tpy) Natural Gas External Combustion Emission Factor (lb/mmscf) 2.00E-04 2.10E-03 1.20E-05 1.10E-03 1.40E-03 8.40E-05 1.20E-03 7.50E-02 Natural Gas Combustion Emission Factor (lb/mmBtu) 1.90E-07 2.00E-06 1.14E-08 1.05E-06 1.33E-06 8.00E-08 1.14E-06 7.14E-05 Maximum Rated Burner IA Unit Description Type Capacity (mmBtu/hr) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) 2 Shop 2 IR Tube Space Heater Space Heater 0.125 1.04E-07 1.10E-06 6.26E-09 5.74E-07 7.30E-07 4.38E-08 6.26E-07 3.91E-05 3 Shop 2 IR Tube Space Heater Space Heater 0.125 1.04E-07 1.10E-06 6.26E-09 5.74E-07 7.30E-07 4.38E-08 6.26E-07 3.91E-05 4 Shop 2 IR Tube Space Heater Space Heater 0.125 1.04E-07 1.10E-06 6.26E-09 5.74E-07 7.30E-07 4.38E-08 6.26E-07 3.91E-05 5 Shop 1 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 6 Shop 1 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 7 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 8 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 9 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 10 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 11 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 12 Shop 3 IR Tube Space Heater Space Heater 0.175 1.46E-07 1.53E-06 8.76E-09 8.03E-07 1.02E-06 6.13E-08 8.76E-07 5.48E-05 13 Shop 3 Rooftop Heating Unit Furnace 0.1 8.34E-08 8.76E-07 5.01E-09 4.59E-07 5.84E-07 3.50E-08 5.01E-07 3.13E-05 14 Shop 3 Rooftop Heating Unit Furnace 0.1 8.34E-08 8.76E-07 5.01E-09 4.59E-07 5.84E-07 3.50E-08 5.01E-07 3.13E-05 15 MFI IR Space Heater Space Heater 0.075 6.26E-08 6.57E-07 3.75E-09 3.44E-07 4.38E-07 2.63E-08 3.75E-07 2.35E-05 16 MFI IR Space Heater Space Heater 0.075 6.26E-08 6.57E-07 3.75E-09 3.44E-07 4.38E-07 2.63E-08 3.75E-07 2.35E-05 17 MFI IR Space Heater Space Heater 0.075 6.26E-08 6.57E-07 3.75E-09 3.44E-07 4.38E-07 2.63E-08 3.75E-07 2.35E-05 18 MFI IR Space Heater Space Heater 0.075 6.26E-08 6.57E-07 3.75E-09 3.44E-07 4.38E-07 2.63E-08 3.75E-07 2.35E-05 19 MFI Rooftop Heating Unit Furnace 0.105 8.76E-08 9.20E-07 5.26E-09 4.82E-07 6.13E-07 3.68E-08 5.26E-07 3.29E-05 20 MFI Curing Oven Oven 1.5 1.25E-06 1.31E-05 7.51E-08 6.88E-06 8.76E-06 5.26E-07 7.51E-06 4.69E-04

Number Maximum Rated Burner Arsenic Beryllium Cadmium Chromium Cobalt of Units Capacity (mmBtu/hr) Compounds Benzene Compounds Compounds Compounds Compounds Dichlorobenzene Formaldehyde Space Heaters (total) 15 2.075 1.73E-06 1.82E-05 1.04E-07 9.52E-06 1.21E-05 7.27E-07 1.04E-05 6.49E-04 Furnaces (total) 3 0.305 2.54E-07 2.67E-06 1.53E-08 1.40E-06 1.78E-06 1.07E-07 1.53E-06 9.54E-05 Ovens (total) 1 1.5 1.25E-06 1.31E-05 7.51E-08 6.88E-06 8.76E-06 5.26E-07 7.51E-06 4.69E-04 Minn. R. 7007.1300, subp. 3(F) Total: 19 3.88 3.24E-06 3.40E-05 1.94E-07 1.78E-05 2.27E-05 1.36E-06 1.94E-05 1.21E-03

IA - 2 to 20 Page 24 AQ Facility ID No.: 12300755 AQ File No.: 4424 0.1 Facility Name: Central Sandblasting Company

Insignificant Activities - Minn. R. 7007.1300, subp. 3(F) Hazardous Air Pollutants (HAPs) Manganese Mercury Nickel Polycyclic Selenium Total Pollutant Compounds Compounds N-Hexane Naphthalene Compounds Organic Matter Selenium Toluene HAPs Minn. R. 7007.1300, subp. 3(F) Threshold (tpy) --- Natural Gas External Combustion Emission Factor (lb/mmscf) 3.80E-04 2.60E-04 1.80E+00 6.10E-04 2.10E-03 8.82E-05 2.40E-05 3.40E-05 --- Natural Gas Combustion Emission Factor (lb/mmBtu) 3.62E-07 2.48E-07 1.71E-03 5.81E-07 2.00E-06 8.40E-08 2.29E-08 3.24E-08 --- Maximum Rated Burner IA Unit Description Type Capacity (mmBtu/hr) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) PTE (tpy) 2 Shop 2 IR Tube Space Heater Space Heater 0.125 1.98E-07 1.36E-07 9.39E-04 3.18E-07 1.10E-06 4.60E-08 1.25E-08 1.77E-08 9.83E-04 3 Shop 2 IR Tube Space Heater Space Heater 0.125 1.98E-07 1.36E-07 9.39E-04 3.18E-07 1.10E-06 4.60E-08 1.25E-08 1.77E-08 9.83E-04 4 Shop 2 IR Tube Space Heater Space Heater 0.125 1.98E-07 1.36E-07 9.39E-04 3.18E-07 1.10E-06 4.60E-08 1.25E-08 1.77E-08 9.83E-04 5 Shop 1 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 6 Shop 1 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 7 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 8 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 9 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 10 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 11 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 12 Shop 3 IR Tube Space Heater Space Heater 0.175 2.77E-07 1.90E-07 1.31E-03 4.45E-07 1.53E-06 6.44E-08 1.75E-08 2.48E-08 1.38E-03 13 Shop 3 Rooftop Heating Unit Furnace 0.1 1.59E-07 1.08E-07 7.51E-04 2.54E-07 8.76E-07 3.68E-08 1.00E-08 1.42E-08 7.86E-04 14 Shop 3 Rooftop Heating Unit Furnace 0.1 1.59E-07 1.08E-07 7.51E-04 2.54E-07 8.76E-07 3.68E-08 1.00E-08 1.42E-08 7.86E-04 15 MFI IR Space Heater Space Heater 0.075 1.19E-07 8.13E-08 5.63E-04 1.91E-07 6.57E-07 2.76E-08 7.51E-09 1.06E-08 5.90E-04 16 MFI IR Space Heater Space Heater 0.075 1.19E-07 8.13E-08 5.63E-04 1.91E-07 6.57E-07 2.76E-08 7.51E-09 1.06E-08 5.90E-04 17 MFI IR Space Heater Space Heater 0.075 1.19E-07 8.13E-08 5.63E-04 1.91E-07 6.57E-07 2.76E-08 7.51E-09 1.06E-08 5.90E-04 18 MFI IR Space Heater Space Heater 0.075 1.19E-07 8.13E-08 5.63E-04 1.91E-07 6.57E-07 2.76E-08 7.51E-09 1.06E-08 5.90E-04 19 MFI Rooftop Heating Unit Furnace 0.105 1.66E-07 1.14E-07 7.88E-04 2.67E-07 9.20E-07 3.86E-08 1.05E-08 1.49E-08 8.25E-04 20 MFI Curing Oven Oven 1.5 2.38E-06 1.63E-06 1.13E-02 3.82E-06 1.31E-05 5.52E-07 1.50E-07 2.13E-07 1.18E-02

Number Maximum Rated Burner Manganese Mercury Nickel Polycyclic Selenium Total of Units Capacity (mmBtu/hr) Compounds Compounds N-Hexane Naphthalene Compounds Organic Matter Selenium Toluene HAPs Space Heaters (total) 15 2.075 3.29E-06 2.25E-06 1.56E-02 5.28E-06 1.82E-05 7.63E-07 2.08E-07 2.94E-07 1.63E-02 Furnaces (total) 3 0.305 4.83E-07 3.31E-07 2.29E-03 7.76E-07 2.67E-06 1.12E-07 3.05E-08 4.33E-08 2.40E-03 Ovens (total) 1 1.5 2.38E-06 1.63E-06 1.13E-02 3.82E-06 1.31E-05 5.52E-07 1.50E-07 2.13E-07 1.18E-02 Minn. R. 7007.1300, subp. 3(F) Total: 19 3.88 6.15E-06 4.21E-06 2.91E-02 9.87E-06 3.40E-05 1.43E-06 3.88E-07 5.50E-07 3.05E-02

IA - 2 to 20 Page 25 Potential to Emit Calculation Abrasive Blasting:

Facility Name Central Sandblasting Facility Description Unit 1 - Shop 3 Date 10/16/2017

GUN 1

Enter the Internal Nozzle Diameter 3/8 (#6 Nozzle) inches Enter the Nozzle Pressure 100 Max psig

Determine the flow rate: Using the values above and the chart below, determine the flow rate of abrasive material through the gun. Flow Rate (lb of abrasive/hr) of Abrasive through the nozzle*

Internal Nozzle Diameter (in) Nozzle Pressure (psig)

30 40 50 60 70 80 90 100 1/8 28 35 42 49 55 63 70 77 3/16 65 80 94 107 122 135 149 165 1/4 109 138 168 195 221 255 280 309 5/16 205 247 292 354 377 420 462 507 3/8 285 355 417 477 540 600 657 720 7/16 385 472 560 645 755 820 905 940 1/2 503 615 725 835 945 1050 1160 1265 5/8 820 990 1170 1336 1510 1680 1850 2030 3/4 1140 1420 1670 1915 2160 2400 2630 2880 1 2030 2460 2900 3340 3780 4200 4640 5060

Flow rate (from the chart above): 720

Select the type of Abrasive Material Steel Shot

The flow rates in the above chart are for sand. If you are using steel or aluminum oxide as your abrasive blast material, the spreadsheet will automatically convert the flow rate listed in the blue box above to these other abrasive material types.

Sand Aluminum Oxide Grit Steel (flow rate of sand x (flow rate of sand x (density of aluminum (density of steel/density (lb of abrasive/hour) oxide/density of sand))* of sand))* If needed, correct the flow rate from Sand to Aluminum Oxide or Steel: 720 1164 3542

PTE - Unit 1 Shop 3 Page 26 Potential to Emit Potential to Emit (PTE) (PTE) for Gun 1 (in Calculate Maximimun Emissions (Potential to Emit) Emission Rate for Gun 1 (in lbs) tons)***

(flow rate x emission emission rate x 8,760 Insignificant PTE in lbs/2000 lb Flow Rate of Gun(1) Emission Factor(2) factor) hours/year Activity (3) per ton (lb pollutant/ lb of (tons Pollutant (lb abrasive/hr) abrasive) (lb pollutant/hour) (lb pollutant/year) (lbs/year) pollutant/year) PM 3542 0.004 14.168 124111.7 2,000 62.1 PM10/PM2.5 3542 0.0034 12.0428 105494.9 2,000 52.7

1 Enter the flow rate of the gun based on the abrasive material used.

2 Pick your emission factors from the choices below. Emission Factors for PM (lb PM/lb PM10 (lb PM10/lb of Abrasives* abrasive) Abrasive)** Sand 0.041 0.029 Grit 0.010 0.007 Steel Shot 0.004 0.0034 Other 0.01 0.01

3 Per MN Rule 7007.1300, Subpart 3.F, individual emission units at a stationary source, each of which have a potential to emit the following pollutants in amounts less then 4000 pounds per year of carbon monoxide and 2000 pounds per year each of SO2, NOx, VOC, PM, and PM10 are considered insignificant activities. These do not need to be counted toward the PTE calculation unless there are other significant sources of emissions at the site.

* Flow rates, material densities, and emission factors for abrasives taken from STAPPA/ALAPCO Abrasive Blasting guidance (5/91) ** PM10 emissions derived from STAPPA/ALAPCO PM10 factors which were based on the amount of PM generated: sand = 0.7 lbs PM10 per lb of PM; grit= 0.7 lb PM10 per lb of PM; Steel shot = 0.86 lb PM10 per lb of PM For "Other", assume PM10=PM *** To determine if a permit is needed, add up all potential emissions from the facility. For example, if you are able to operate two blasting guns at the same time, or if you also have a paint spraying booth or other source of emissions at your facility, include these as well. Your total Potential to Emit should be below the levels referenced in the All About Air Permits website noted above.

PTE - Unit 1 Shop 3 Page 27 Potential to Emit Calculation Abrasive Blasting:

Facility Name Central Sandblasting Facility Description Unit 2 - Shop 3 Date 10/16/2017

GUN 1

Enter the Internal Nozzle Diameter 3/8 (#6 Nozzle) inches Enter the Nozzle Pressure 100 Max psig

Determine the flow rate: Using the values above and the chart below, determine the flow rate of abrasive material through the gun. Flow Rate (lb of abrasive/hr) of Abrasive through the nozzle*

Internal Nozzle Diameter (in) Nozzle Pressure (psig)

Flow rate (from the chart above): 720

Select the type of Abrasive Material Steel Shot

PTE - Unit 2 Shop 3 Page 28 Potential to Emit Potential to Emit (PTE) (PTE) for Gun 1 (in Calculate Maximimun Emissions (Potential to Emit) Emission Rate for Gun 1 (in lbs) tons)***

1 Enter the flow rate of the gun based on the abrasive material used.

PTE - Unit 2 Shop 3 Page 29 Potential to Emit Calculation Abrasive Blasting:

Facility Name Central Sandblasting Facility Description Unit 3 - Shop 1 Date 10/16/2017

GUN 1

Enter the Internal Nozzle Diameter 1/4 (#4 Nozzle) inches Enter the Nozzle Pressure 80 Max psig

Determine the flow rate: Using the values above and the chart below, determine the flow rate of abrasive material through the gun. Flow Rate (lb of abrasive/hr) of Abrasive through the nozzle*

Internal Nozzle Diameter (in) Nozzle Pressure (psig)

Flow rate (from the chart above): 255

Select the type of Abrasive Material Grit

PTE - Unit 3 Shop 1 Page 30 Potential to Emit Potential to Emit (PTE) (PTE) for Gun 1 (in Calculate Maximimun Emissions (Potential to Emit) Emission Rate for Gun 1 (in lbs) tons)***

(flow rate x emission emission rate x 8,760 Insignificant PTE in lbs/2000 lb Flow Rate of Gun(1) Emission Factor(2) factor) hours/year Activity (3) per ton (lb pollutant/ lb of (tons Pollutant (lb abrasive/hr) abrasive) (lb pollutant/hour) (lb pollutant/year) (lbs/year) pollutant/year) PM 412 0.01 4.12 36091.2 2,000 18.0 PM10/PM2.5 412 0.007 2.884 25263.8 2,000 12.6

1 Enter the flow rate of the gun based on the abrasive material used.

PTE - Unit 3 Shop 1 Page 31

Attachment 2 – Subject item inventory and facility requirements

List of SIs

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: IND20200001 (Major Amendment)

Details for: SI Category: None SI Type: All

Agency Interest Name Subject Item ID Subject Item Designation Subject Item Description

Central Sandblasting ACTV2 Null All IAs Company

AISI26591 Null Null

VOC and Particulate COMG2 Null Coating Limits NESHAP MMMM: Surface COMG3 Null Coating of Miscellaneous .. Individual Panel Filter COMG4 Null Requirements Panel Filters w/ Total COMG5 Null Enclosure Panel Filters w/ Hood COMG6 Null Capture

EQUI7 Null Spray Booth 4

EQUI8 Null Cleaning Solvents

EQUI9 Null Spray Booth 5

EQUI10 Null AMU 1

EQUI11 Null AMU 2

EQUI12 Null Spray Booth MFI

EQUI13 Null AMU MFI

STRU4 Null Spray Booth 4 South Stack

STRU5 Null Spray Booth 4 Center Stack

STRU6 Null Spray Booth 4 North Stack List of SIs

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: IND20200001 (Major Amendment)

Details for: SI Category: None SI Type: All

Agency Interest Name STuRbjUe5ct Item ID NSuubllject Item Designation Spubrajeyc Bt oItoetmh 4D Ceescnrtieprt iSotnack Central Sandblasting Company STRU6 Null Spray Booth 4 North Stack

STRU7 Null Shop 1

STRU8 Null Shop 2

STRU9 Null Shop 3

STRU10 Null Spray Booth 5 East Stack

STRU11 Null Spray Booth 5 West Stack

STRU12 Null AMU 1 Stack

STRU13 Null AMU 2 Stack

STRU14 Null Shop MFI

STRU15 Null Spray Booth MFI Stack

STRU16 Null AMU MFI Stack

TFAC1 12300755 Central Sandblasting Co

TREA4 Null 058 - Mat or panel ﬁlter

TREA8 Null 058 - Mat or panel ﬁlter

TREA9 Null 058 - Mat or panel ﬁlter

TREA10 Null 058 - Mat or panel ﬁlter

TREA11 Null 086 - Water curtain List of SIs

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: IND20200001 (Major Amendment)

Details for: SI Category: None SI Type: All

Agency Interest Name TSRubEjAe1c0t Item ID NSuubllject Item Designation 0Su5b8j -e Mcta It eomr p Daenseclr ﬁiplteiorn Central Sandblasting Company TREA11 Null 086 - Water curtain Insigniﬁcant air emissions activity

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: IND20200001 (Major Amendment)

Details for: SI Category: Activity SI Type: Insigniﬁcant Air Emissions Activity

Agency Interest Na.. Activity ID Subject Ite.. Subject Item Type Description Subject Item ID Subject Ite.. Subject Ite.. Status Desc.. Sub Attribute Description

Central Sandblasting IND20200001 Activity Insigniﬁcant Air Emissions Activity ACTV2 Null All IAs Active / Minn. R. 7007.1300, subp. 3(E) Company Existing

Minn. R. 7007.1300, subp. 3(F)

Minn. R. 7007.1300, subp. 3(G)

Minn. R. 7007.1300, subp. 4

Minn. R. 7008.4110 Component Group (Members)

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: Component Group SI Type: Air Component Group

Agency Interest Name Subject Item ID Subject Item Designation Subject Item Description Group Member ID (padded)

Central Sandblasting COMG2 Null VOC and Particulate EQUI7 Company Coating Limits

EQUI8

EQUI9

EQUI12

COMG3 Null NESHAP MMMM: Surface EQUI7 Coating of Miscellaneous Metal Parts and Products EQUI8

EQUI9

EQUI12

COMG4 Null Individual Panel Filter TREA4 Requirements

TREA8

TREA9

TREA10

COMG5 Null Panel Filters w/ Total TREA4 Enclosure

TREA8

COMG6 Null Panel Filters w/ Hood TREA9 Capture

TREA10 PTE by subject item

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: All SI Type: All l a i t ) s d r n e n h e t o / i t i s ) ) ) o s m r r r b s i P l y y y i

( L / / /

d l l s s s m e a a n n n E i i t

l t o o o t c i t t t a n n r ( ( ( e u e t t t t s c o o Subject Item Subject Item Type Subject Item e r A P P Category Description Description Subject Item ID Designation Subject Item Description Pollutant n U Component Group Air Component Group COMG2 Null VOC and Particulate HAPs - Total 0 0 225 Coating Limits Methyl isobutyl ketone (4.. 0 0 225 Particulate Matter 0 0 95 PM < 2.5 micron 0 0 95 PM < 10 micron 0 0 95 Toluene 0 0 225 Volatile Organic Compoun.. 0 0 225 Xylenes, Total 0 0 225 Equipment Furnace EQUI10 Null AMU 1 1,4-Dichlorobenzene (par.. 5.37e-06 2.35e-05 2.35e-05 Arsenic compounds 8.94e-07 3.92e-06 3.92e-06 Benzene 9.39e-06 4.11e-05 4.11e-05 Beryllium Compounds 5.37e-08 2.35e-07 2.35e-07 Cadmium compounds 4.92e-06 2.15e-05 2.15e-05 Carbon Dioxide 549.28 2,405.86 2,405.86 Carbon Dioxide Equivalent 549.85 2,408.35 2,408.35 Carbon Monoxide 0.376 1.645 1.645 Chromium compounds 6.26e-06 2.74e-05 2.74e-05 Cobalt compounds 3.76e-07 1.65e-06 1.65e-06 Formaldehyde 0.000335 0.00147 0.00147 HAPs - Total 0.00844 0.037 0.037 Hexane 0.00805 0.0353 0.0353 Lead Compounds 2.24e-06 9.79e-06 9.79e-06 Manganese compounds 1.7e-06 7.44e-06 7.44e-06 Mercury Compounds 1.16e-06 5.09e-06 5.09e-06 Methane 0.0104 0.0453 0.0453 Naphthalene 2.73e-06 1.19e-05 1.19e-05 Nickel compounds 9.39e-06 4.11e-05 4.11e-05 Nitrogen Oxides 0.447 1.959 1.959 Nitrous Oxide 0.00104 0.00453 0.00453 Particulate Matter 0.034 0.149 0.149 PM < 2.5 micron 0.034 0.149 0.149 PM < 10 micron 0.034 0.149 0.149 Polycyclic organic matter 3.94e-07 1.73e-06 1.73e-06 Selenium compounds 1.07e-07 4.7e-07 4.7e-07 Sulfur Dioxide 0.003 0.012 0.012 Toluene 1.52e-05 6.66e-05 6.66e-05 Volatile Organic Compoun.. 0.025 0.108 0.108 EQUI11 Null AMU 2 1,4-Dichlorobenzene (par.. 5.37e-06 2.35e-05 2.35e-05 Arsenic compounds 8.94e-07 3.92e-06 3.92e-06 Benzene 9.39e-06 4.11e-05 4.11e-05 Beryllium Compounds 5.37e-08 2.35e-07 2.35e-07 Cadmium compounds 4.92e-06 2.15e-05 2.15e-05 Carbon Dioxide 549.28 2,405.9 2,406.9 Carbon Dioxide Equivalent 549.85 2,408.3 2,409.3 Carbon Monoxide 0.376 1.645 1.645 Chromium compounds 6.26e-06 2.74e-05 2.74e-05 Cobalt compounds 3.76e-07 1.65e-06 1.65e-06 Formaldehyde 0.000335 0.00147 0.00147 HAPs - Total 0.00844 0.037 0.037 Hexane 0.00805 0.0353 0.0353 Lead Compounds 2.24e-06 9.79e-06 9.79e-06 Manganese compounds 1.7e-06 7.44e-06 7.44e-06 Mercury Compounds 1.16e-06 5.09e-06 5.09e-06 Methane 0.0104 0.0453 0.0453 Naphthalene 2.73e-06 1.19e-05 1.19e-05 Nickel compounds 9.39e-06 4.11e-05 4.11e-05 Nitrogen Oxides 0.447 1.959 1.959 Nitrous Oxide 0.00104 0.00453 0.00453 Particulate Matter 0.034 0.149 0.149 PM < 2.5 micron 0.034 0.149 0.149 PM < 10 micron 0.034 0.149 0.149 Polycyclic organic matter 3.94e-07 1.73e-06 1.73e-06 Selenium compounds 1.07e-07 4.7e-07 4.7e-07 Sulfur Dioxide 0.003 0.012 0.012 Toluene 1.52e-05 6.66e-05 6.66e-05 0.025 0.108 0.108 PTE by subject item

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: All SI Type: All l a i t ) s d r n e n h e t o / i t i s ) ) ) o s m r r r b s i P l y y y i

( L / / /

d l l s s s m e a a n n n E i i t

l t o o o t c i t t t a n n r ( ( ( e u e t t t t s c o o Subject Item Subject Item Type Subject Item e r A P P Category Description Description Subject Item ID Designation Subject Item Description Pollutant n Sulfur Dioxide U Equipment Furnace EQUI11 Null AMU 2 Toluene 1.52e-05 6.66e-05 6.66e-05 Volatile Organic Compoun.. 0.025 0.108 0.108 EQUI13 Null AMU MFI 1,4-Dichlorobenzene (par.. 2.63e-06 1.15e-05 1.15e-05 Arsenic compounds 4.38e-07 1.92e-06 1.92e-06 Benzene 4.6e-06 2.01e-05 2.01e-05 Beryllium Compounds 2.63e-08 1.15e-07 1.15e-07 Cadmium compounds 2.41e-06 1.06e-05 1.06e-05 Carbon Dioxide 269.05 1,178.4 1,179.4 Carbon Dioxide Equivalent 269.33 1,179.6 1,180.6 Carbon Monoxide 0.184 0.806 0.806 Chromium compounds 3.07e-06 1.34e-05 1.34e-05 Cobalt compounds 1.84e-07 8.06e-07 8.06e-07 Formaldehyde 0.000164 0.00072 0.00072 HAPs - Total 0.00414 0.0181 0.0181 Hexane 0.00394 0.0173 0.0173 Lead Compounds 1.1e-06 4.8e-06 4.8e-06 Manganese compounds 8.32e-07 3.65e-06 3.65e-06 Mercury Compounds 5.7e-07 2.49e-06 2.49e-06 Methane 0.00507 0.0222 0.0222 Naphthalene 1.34e-06 5.85e-06 5.85e-06 Nickel compounds 4.6e-06 2.01e-05 2.01e-05 Nitrogen Oxides 0.219 0.959 0.959 Nitrous Oxide 0.000507 0.00222 0.00222 Particulate Matter 0.017 0.073 0.073 PM < 2.5 micron 0.017 0.073 0.073 PM < 10 micron 0.017 0.073 0.073 Polycyclic organic matter 1.93e-07 8.46e-07 8.46e-07 Selenium compounds 5.26e-08 2.3e-07 2.3e-07 Sulfur Dioxide 0.001 0.006 0.006 Toluene 7.45e-06 3.26e-05 3.26e-05 Volatile Organic Compoun.. 0.012 0.053 0.053 Solvent Equipment EQUI8 Null Cleaning Solvents Volatile Organic Compoun.. 6.11 26.7 0 Spray Booth/Coating EQUI7 Null Spray Booth 4 Cumene (Isopropylbenzen.. 0.998 4.37 4.37 Line Dibutyl phthalate (Di-n-bu.. 4.25 18.6 18.6 Ethylbenzene 13.5 59.2 27 Ethylene glycol 2.17 9.5 9.5 Glycol ethers 5.4 23.6 23.6 HAPs - Total 91.4 400 0 Hexamethylene-1,6-diisoc.. 0.43 1.88 1.88 Methanol 13.7 59.9 27 Methyl isobutyl ketone (4.. 53.9 236 0 Methylene diphenyl diisoc.. 13 57.1 27 Naphthalene 2.59 11.4 11.4 Particulate Matter 7.4 1,440 0 Phenol 2.03 8.89 8.89 PM < 2.5 micron 7.4 1,440 0 PM < 10 micron 7.4 1,440 0 Styrene 6.3 27.6 27 Toluene 40.1 176 0 Volatile Organic Compoun.. 95.1 416 0 Xylenes, Total 58 254 0 EQUI9 Null Spray Booth 5 Cumene (Isopropylbenzen.. 1 4.37 4.37 Dibutyl phthalate (Di-n-bu.. 4.25 18.63 18.63 Ethylbenzene 13.51 59.17 59.17 Ethylene glycol 2.17 9.5 9.5 Glycol ethers 5.4 23.63 23.63 HAPs - Total 91.31 399.96 0 Hexamethylene-1,6-diisoc.. 0.43 1.88 1.88 Methanol 13.68 59.92 59.92 Methyl isobutyl ketone (4.. 53.87 235.93 0 Methyl methacrylate 2.6 11.38 11.38 Methylene diphenyl diisoc.. 13.04 57.1 57.1 Naphthalene 2.59 11.33 11.33 Particulate Matter 71.73 1,441 0 Phenol 2.03 8.89 8.89 71.73 1,441 0 71.73 1,441 0 6.3 27.59 27.59 40.13 175.76 0 950.8 416.4 0 58.05 254.25 0 PTE by subject item

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment) 1 4.37 4.37 4.25 18.63 18.63 Details for: 13.51 59.17 59.17 SI Category: All 2.17 9.5 9.5 5.4 23.63 23.63 SI Type: All 91.31 399.96 0

0.43 l 1.88 1.88 a i t ) s d r

13.68 n 59.92 59.92 e n h e t o / i t i s ) ) ) o 53.87 235.93 0 s m r r r b s i P l y y y i

( L / / /

d l l s s s 2.6 11.38 11.38 m e a a n n n E i i t

l t o o o t c i t t t a n 13.04 57.1 n 57.1 r ( ( ( e u e t t t t s c o o Subject Item Subject Item Type Subject Item 2.59 e 11.33 11.33 r A P P Category Description Description Subject Item ID Designation Subject Item Description Pollutant n Particulate Matter 71.73 U 1,441 0 Equipment Spray Booth/Coating EQUI9 Null Spray Booth 5 Phenol 2.03 8.89 8.89 Line PM < 2.5 micron 71.73 1,441 0 PM < 10 micron 71.73 1,441 0 Styrene 6.3 27.59 27.59 Toluene 40.13 175.76 0 Volatile Organic Compoun.. 950.8 416.4 0 Xylenes, Total 58.05 254.25 0 EQUI12 Null Spray Booth MFI Cumene (Isopropylbenzen.. 0.32 1.4 1.4 Dibutyl phthalate (Di-n-bu.. 1.34 5.9 5.9 Ethylbenzene 4.27 18.7 18.7 Ethylene glycol 0.68 3 3 Glycol ethers 1.7 7.5 7.5 HAPs - Total 28.84 126.3 0 Hexamethylene-1,6-diisoc.. 0.14 0.6 0.6 Methanol 4.32 18.9 18.9 Methyl isobutyl ketone (4.. 17.01 74.5 0 Methyl methacrylate 0.82 3.6 3.6 Methylene diphenyl diisoc.. 4.12 18 18 Naphthalene 0.82 3.6 3.6 Particulate Matter 33.25 455.1 0 Phenol 0.64 2.8 2.8 PM < 2.5 micron 33.25 455.1 0 PM < 10 micron 33.25 455.1 0 Styrene 1.99 8.7 8.7 Toluene 12.67 55.5 0 Volatile Organic Compoun.. 30.02 131.5 0 Xylenes, Total 18.33 80.3 0 SI - SI relationships

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: All SI Type: All

Subject Item Category Subject Item Type Subject Item Subject Item Related Subject Related Subject Item Start Date (Related End Date (Related Description Description Subject Item ID Designation Description Relationship Item ID % Flow Type Description Subject Item) Subject Item)

Equipment Furnace EQUI10 Null AMU 1 sends to STRU12 100 Stack/Vent 12/2/2019 Null

EQUI11 Null AMU 2 sends to STRU13 100 Stack/Vent 12/2/2019 Null

EQUI13 Null AMU MFI sends to STRU16 100 Stack/Vent 1/1/2014 Null

Spray EQUI7 Null Spray Booth is controlled TREA4 100 058-Mat or Panel Filter 1/15/2008 Null Booth/Coating 4 by Line TREA8 100 058-Mat or Panel Filter 9/1/2017 Null

sends to STRU4 33.4 Stack/Vent 1/15/2008 Null

STRU5 33.3 Stack/Vent 1/15/2008 Null

STRU6 33.3 Stack/Vent 1/15/2008 Null

EQUI9 Null Spray Booth is controlled TREA9 100 058-Mat or Panel Filter 12/2/2019 Null 5 by

TREA10 100 058-Mat or Panel Filter 12/2/2019 Null

sends to STRU10 50 Stack/Vent 12/2/2019 Null

STRU11 50 Stack/Vent 12/2/2019 Null

is controlled 086-Water Curtain (Use EQUI12 Null Spray Booth TREA11 100 1/1/2014 Null by for Water Wash Paint Bo.. MFI

sends to STRU15 100 Stack/Vent 1/1/2014 Null

058 - Mat or is controlled Treatment 058-Mat or Panel TREA4 Null TREA8 100 058-Mat or Panel Filter 9/1/2017 Null panel ﬁlter in series by Filter 058 - Mat or is controlled TREA9 Null TREA10 100 058-Mat or Panel Filter 12/2/2019 Null panel ﬁlter in series by Emission Units 1

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: None SI Type: Furnace, Solvent Equipment, Spray Booth/Coating Line

Subject Item Max Design Max Design Type Subject Item Subject Item Max Design Capacity Units Capacity Units Construction Operation Modiﬁcation Description Subject Item ID Designation Description Manufacturer Model Capacity (numerator) (denominator) Material Start Date Start Date Date

million British Furnace EQUI10 Null AMU 1 Rupp Air RAM 36 4.7 hours Fuel 10/21/2019 12/2/2019 Null thermal units

million British EQUI11 Null AMU 2 Rupp Air RAM 36 4.7 hours Fuel 10/21/2019 12/2/2019 Null thermal units

Global Finishing million British EQUI13 Null AMU MFI CFA-25 2.3 hours Fuel 11/1/2013 1/1/2014 Null Solutions thermal units

Solvent Cleaning EQUI8 Null N/A N/A 8008 gallons years Solvents 3/9/2009 3/9/2009 Null Equipment Solvents

Spray Booth Global Finishing Spray Booth/ EQUI7 Null DDG-2617PDT-40-S 22.8 gallons hours Coating 10/1/2007 1/15/2008 Null 4 Solutions Coating Line

Spray Booth Global Finishing EQUI9 Null DDG-3216PDT-5-S 22.8 gallons hours Coating 10/21/2019 12/2/2019 Null 5 Solutions

Spray Booth Global Finishing EQUI12 Null WWDCG-161112-S 7.2 gallons hours Coating 11/1/2013 1/1/2014 Null MFI Solutions Buildings, General

Agency Interest: Central Sandblasting Company Agency Interest ID: 26591 Activity: IND20200001 (Major Amendment)

Details for: SI Category: Structure SI Type: Building

Subject Item Type Subject Item Subject Item Units Units Units Description Subject Item ID Designation Description Height (height) Length (length) Width (width)

Building STRU7 Null Shop 1 21 feet 80 feet 80 feet

STRU8 Null Shop 2 27.5 feet 150 feet 60 feet

STRU9 Null Shop 3 26.5 feet 230 feet 80 feet

STRU14 Null Shop MFI 30 feet 160 feet 40 feet Stack/Vent, General

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: Structure SI Type: Stack/Vent

Subject Item Stack Discharge Flow Rate/Temp Type Subject Item Subject Item Stack Height Diameter Stack Length Stack Width Stack Flow Rate Temperature Information Description Subject Item ID Designation Description (feet) (feet) (feet) (feet) (cubic ft/min) (°F) Source Discharge Direction Spray Booth 4 Upwards with no cap on Stack/Vent STRU4 Null 40 3.5 Null Null 20800 70 Manufacturer South Stack stack/vent Spray Booth 4 Upwards with no cap on STRU5 Null 40 3.5 Null Null 20800 70 Manufacturer Center Stack stack/vent Spray Booth 4 Upwards with no cap on STRU6 Null 40 3.5 Null Null 20800 70 Manufacturer North Stack stack/vent Spray Booth 5 Upwards with no cap on STRU10 Null 35 3.5 Null Null 40000 70 Manufacturer East Stack stack/vent Spray Booth 5 Upwards with no cap on STRU11 Null 35 3.5 Null Null 40000 70 Manufacturer West Stack stack/vent

STRU12 Null AMU 1 Stack 25 Null 3.5 3.5 40000 160 Manufacturer Downward

STRU13 Null AMU 2 Stack 25 Null 3.5 3.5 40000 160 Manufacturer Downward

Spray Booth MFI Upwards with no cap on STRU15 Null 40 3 Null Null 22000 70 Manufacturer Stack stack/vent

STRU16 Null AMU MFI Stack 12.5 Null 5 2.7 22000 160 Manufacturer Horizontally Other Control Equipment

Agency Interest: None Agency Interest ID: 26591 Activity: None (Major Amendment)

Details for: SI Category: Treatment SI Type: 058-Mat or Panel Filter & 086-Water Curtain (Use for Water Wash Paint Booth)

Subject Item Capture Other Other operating Type Subject Item Subject Item Installation Pollutant Efficiency Destruction Collect Subject to Large or Efficiency operating parameters Description Subject Item ID Designation Description Manufacturer Model Start Date Controlled (%) Efficiency (%) CAM? Other PSEU? Basis parameters? description Particulate 058-Mat or TREA4 Null 058 - Mat or Chemco Mfg 48YROLLT12 1/15/2008 80 85 Yes Other Other No Null Matter Panel Filter panel filter PM < 2.5 80 85 Yes Other Other No Null micron PM < 10 80 85 Yes Other Other No Null micron Particulate TREA8 Null 058 - Mat or Chemco Mfg 48YROLLT12 9/1/2017 100 85 Yes Other Other No Null Matter panel filter PM < 2.5 100 85 Yes Other Other No Null micron PM < 10 100 85 Yes Other Other No Null micron Particulate Control TREA9 Null 058 - Mat or Chemco Mfg 48YROLLT12 10/21/2019 80 85 Yes Other No Null Matter Equipment .. panel filter PM < 2.5 80 85 Yes Other Other No Null micron PM < 10 Control 80 85 Yes Other No Null micron Equipment .. Particulate Control TREA10 Null 058 - Mat or Chemco Mfg 48YROLLT12 10/21/2019 100 85 Yes Other No Null Matter Equipment .. panel filter PM < 2.5 100 85 Yes Other Other No Null micron PM < 10 Control 100 85 Yes Other No Null micron Equipment .. Particulate Control 086-Water TREA11 Null 086 - Water Global Finishing WWDCG-16.. 11/1/2013 80 85 Yes Other No Null Matter Equipment .. Curtain (Use curtain Solutions for Water PM < 2.5 80 85 Yes Other Other No Null Wash Paint micron Booth) PM < 10 Control 80 85 Yes Other No Null micron Equipment .. SI Id Sequence Requirement Permit Appendices: This permit contains appendices as listed in the permit Table of Contents. The Permittee shall comply with all requirements contained in Appendix A. Insignificant Activities and General Applicable Requirements, Appendix B. Maximum Contents of Materials and Capacity Information, Appendix C. 40 CFR pt. 63, subp. MMMM Equations, and Appendix D. 40 CFR pt. 63, subp. A (General Provisions). [Minn. R. 7007.0800, TFAC 1 1240 subp. 2(A) & (B)] The Permittee must comply with Minn. Stat. 116.385. The Permittee may not use trichloroethylene at its permitted facility after June 1, 2022, including in any manufacturing, processing, or cleaning processes, except as described in Minn. Stat. 116.385, subd. 2(b) and 4. This is a state-only requirement and is not enforceable by the U.S. Environmental Protection Agency (EPA) Administrator and citizens under the Clean Air Act. [Minn. Stat. TFAC 1 1245 116.385]

PERMIT SHIELD: Subject to the limitations in Minn. R. 7007.1800, compliance with the conditions of this permit shall be deemed compliance with the specific provision of the applicable requirement identified in the permit as the basis of each condition. Subject to the limitations of Minn. R. 7007.1800 and 7017.0100, subp. 2, notwithstanding the conditions of this permit specifying compliance practices for applicable requirements, any person (including the Permittee) may also use other credible evidence to establish compliance or noncompliance with applicable requirements.

This permit shall not alter or affect the liability of the Permittee for any violation of applicable requirements TFAC 1 1260 prior to or at the time of permit issuance. [Minn. R. 7007.1800(A)(2)] The Permittee shall comply with National Primary and Secondary Ambient Air Quality Standards, 40 CFR pt. 50, and the Minnesota Ambient Air Quality Standards, Minn. R. 7009.0010 to 7009.0090. Compliance shall be demonstrated upon written request by the MPCA. [Minn. R. 7007.0800, subp. 2(A) & (B), Minn. R. 7009.0020- TFAC 1 1300 7009.0090, Minn. Stat. 116.07, subd. 4a(a)] Circumvention: Do not install or use a device or means that conceals or dilutes emissions, which would otherwise violate a federal or state air pollution control rule, without reducing the total amount of pollutant TFAC 1 1380 emitted. [Minn. R. 7011.0020] Air Pollution Control Equipment: Operate all pollution control equipment whenever the corresponding process equipment and emission units are operated. [Minn. R. 7007.0800, subp. 16(J), Minn. R. 7007.0800, subp. 2(A) & TFAC 1 1390 (B)] Operation and Maintenance Plan: Retain at the stationary source an operation and maintenance plan for all air pollution control equipment. At a minimum, the O & M plan shall identify all air pollution control equipment and control practices and shall include a preventative maintenance program for the equipment and practices, a description of (the minimum but not necessarily the only) corrective actions to be taken to restore the equipment and practices to proper operation to meet applicable permit conditions, a description of the employee training program for proper operation and maintenance of the control equipment and practices, and the records kept to demonstrate plan implementation. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, TFAC 1 1400 subp. 16(J)]

Operation Changes: In any shutdown, breakdown, or deviation the Permittee shall immediately take all practical steps to modify operations to reduce the emission of any regulated air pollutant. The Commissioner may require feasible and practical modifications in the operation to reduce emissions of air pollutants. No emissions units that have an unreasonable shutdown or breakdown frequency of process or control equipment shall be TFAC 1 1410 permitted to operate. [Minn. R. 7019.1000, subp. 4] Fugitive Emissions: Do not cause or permit the handling, use, transporting, or storage of any material in a manner which may allow avoidable amounts of particulate matter to become airborne. Comply with all other TFAC 1 1420 requirements listed in Minn. R. 7011.0150. [Minn. R. 7011.0150]

Noise: The Permittee shall comply with the noise standards set forth in Minn. R. 7030.0010 to 7030.0080 at all times during the operation of any emission units. This is a state only requirement and is not enforceable by the TFAC 1 1430 EPA Administrator or citizens under the Clean Air Act. [Minn. R. 7030.0010-7030.0080] Inspections: The Permittee shall comply with the inspection procedures and requirements as found in Minn. R. TFAC 1 1440 7007.0800, subp. 9(A). [Minn. R. 7007.0800, subp. 9(A)] The Permittee shall comply with the General Conditions listed in Minn. R. 7007.0800, subp. 16. [Minn. R. TFAC 1 1450 7007.0800, subp. 16] SI Id Sequence Requirement Performance Testing: Conduct all performance tests in accordance with Minn. R. ch. 7017 unless otherwise TFAC 1 1460 noted in this permit. [Minn. R. ch. 7017] Performance Test Noﬁcaons and Submials:

Performance Test Noﬁcaon and Plan: due 30 days before each Performance Test Performance Test Pre-test Meeng: due seven days before each Performance Test Performance Test Report: due 45 days aer each Performance Test

The Notification, Test Plan, and Test Report must be submitted in a format specified by the commissioner. TFAC 1 1470 [Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1-4, Minn. R. 7017.2035, subps. 1-2] Limits set as a result of a performance test (conducted before or after permit issuance) apply until superseded as stated in the MPCA's Notice of Compliance letter granting preliminary approval. Preliminary approval is based on formal review of a subsequent performance test on the same unit as specified by Minn. R. 7017.2025, subp. 3. The limit is final upon issuance of a permit amendment incorporating the change. [Minn. R. 7017.2025, TFAC 1 1480 subp. 3]

Monitoring Equipment Calibration - The Permittee shall either:

1. Calibrate or replace required monitoring equipment every 12 months; or 2. Calibrate at the frequency stated in the manufacturer's specifications.

For each monitor, the Permittee shall maintain a record of all calibrations, including the date conducted, and any corrective action that resulted. The Permittee shall include the calibration frequencies, procedures, and manufacturer's specifications (if applicable) in the Operations and Maintenance Plan. Any requirements TFAC 1 1490 applying to continuous emission monitors are listed separately in this permit. [Minn. R. 7007.0800, subp. 4(D)] Operation of Monitoring Equipment: Unless noted elsewhere in this permit, monitoring a process or control equipment connected to that process is not necessary during periods when the process is shutdown, or during checks of the monitoring systems, such as calibration checks and zero and span adjustments. If monitoring records are required, they should reflect any such periods of process shutdown or checks of the monitoring TFAC 1 1500 system. [Minn. R. 7007.0800, subp. 4(D)]

Recordkeeping: Retain all records at the stationary source, unless otherwise specified within this permit, for five (5) years from the date of monitoring, sample, measurement, or report. Records which must be retained at this location include all calibration and maintenance records, all original recordings for continuous monitoring instrumentation, and copies of all reports required by the permit. Records must conform to the requirements TFAC 1 1510 listed in Minn. R. 7007.0800, subp. 5(A). [Minn. R. 7007.0800, subp. 5(C)]

Recordkeeping: Maintain records describing any insignificant modifications (as required by Minn. R. 7007.1250, subp. 3) or changes contravening permit terms (as required by Minn. R. 7007.1350, subp. 2), including records TFAC 1 1520 of the emissions resulting from those changes. [Minn. R. 7007.0800, subp. 5(B)]

If the Permittee determines that no permit amendment or notification is required prior to making a change, the Permittee must retain records of all calculations required under Minn. R. 7007.1200. For expiring permits, these records shall be kept for a period of five years from the date the change was made or until permit reissuance, whichever is longer. The records shall be kept at the stationary source for the current calendar year of operation and may be kept at the stationary source or office of the stationary source for all other years. The TFAC 1 1530 records may be maintained in either electronic or paper format. [Minn. R. 7007.1200, subp. 4] SI Id Sequence Requirement

Shutdown Notifications: Notify the Commissioner at least 24 hours in advance of a planned shutdown of any control equipment or process equipment if the shutdown would cause any increase in the emissions of any regulated air pollutant. If the owner or operator does not have advance knowledge of the shutdown, notification shall be made to the Commissioner as soon as possible after the shutdown. However, notification is not required in the circumstances outlined in items A, B, and C of Minn. R. 7019.1000, subp. 3.

At the time of notification, the owner or operator shall inform the Commissioner of the cause of the shutdown and the estimated duration. The owner or operator shall notify the Commissioner when the shutdown is over. TFAC 1 1610 [Minn. R. 7019.1000, subp. 3]

Breakdown Notifications: Notify the Commissioner within 24 hours of a breakdown of more than one hour duration of any control equipment or process equipment if the breakdown causes any increase in the emissions of any regulated air pollutant. The 24-hour time period starts when the breakdown was discovered or reasonably should have been discovered by the owner or operator. However, notification is not required in the circumstances outlined in items A, B, and C of Minn. R. 7019.1000, subp. 2.

At the time of notification or as soon as possible thereafter, the owner or operator shall inform the Commissioner of the cause of the breakdown and the estimated duration. The owner or operator shall notify TFAC 1 1620 the Commissioner when the breakdown is over. [Minn. R. 7019.1000, subp. 2]

Notification of Deviations Endangering Human Health or the Environment: As soon as possible after discovery, notify the Commissioner or the state duty officer, either orally or by facsimile, of any deviation from permit TFAC 1 1630 conditions which could endanger human health or the environment. [Minn. R. 7019.1000, subp. 1]

Notification of Deviations Endangering Human Health or the Environment Report: Within two working days of discovery, notify the Commissioner in writing of any deviation from permit conditions which could endanger human health or the environment. Include the following informaon in this wrien descripon: 1. the cause of the deviaon; 2. the exact dates of the period of the deviaon, if the deviaon has been corrected; 3. whether or not the deviaon has been corrected; 4. the ancipated me by which the deviaon is expected to be corrected, if not yet corrected; and 5. steps taken or planned to reduce, eliminate, and prevent reoccurrence of the deviation. [Minn. R. 7019.1000, TFAC 1 1640 subp. 1]

The Permittee must submit a semiannual deviations report : Due semiannually, by the 30th of January and July. The first semiannual report submitted by the Permittee must cover the calendar half-year in which the permit is issued. The first report of each calendar year covers January 1 - June 30. The second report of each calendar year covers July 1 - December 31. Submit this on form DRF-2 (Deviation Reporting Form). If no deviations have TFAC 1 1650 occurred, submit the signed report certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(B)(2)] Application for Permit Amendment: If a permit amendment is needed, submit an application in accordance with the requirements of Minn. R. 7007.1150 through Minn. R. 7007.1500. Submittal dates vary, depending on the type of amendment needed.

Upon adoption of a new or amended federal applicable requirement, and if there are three or more years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [Minn. R. 7007.0400, TFAC 1 1670 subp. 3, Minn. R. 7007.1150 - 7007.1500]

Extension Requests: The Permittee may apply for an Administrative Amendment to extend a deadline in a permit by no more than 120 days, provided the proposed deadline extension meets the requirements of Minn. R. 7007.1400, subp. 1(H). Performance testing deadlines from the General Provisions of 40 CFR pt. 60 and pt. 63 are examples of deadlines for which the MPCA does not have authority to grant extensions and therefore do TFAC 1 1680 not meet the requirements of Minn. R. 7007.1400, subp. 1(H). [Minn. R. 7007.1400, subp. 1(H)] SI Id Sequence Requirement

The Permittee must submit a compliance certification : Due annually, by the 31st of January (for the previous calendar year). Submit this on form CR-04 (Annual Compliance Certification Report). This report covers all deviations experienced during the calendar year. If no deviations have occurred, submit the signed report TFAC 1 1700 certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(D)]

Within 15 days of a request from the Commissioner, the Permittee must provide a complete summary of all performance tests required at the facility including the subject item, pollutant, most recent test date (if TFAC 1 1703 applicable), and the date of the next test in an approved format. [Minn. R. 7007.0800, subp. 16(L)] The Permittee shall submit an application for permit reissuance : Due 180 calendar days before Permit TFAC 1 1720 Expiration Date. [Minn. R. 7007.0400, subp. 2] Emission Inventory Report: due on or before April 1 of each calendar year following permit issuance. Submit in a TFAC 1 1730 format specified by the Commissioner. [Minn. R. 7019.3000-7019.3100] TFAC 1 1740 Emission Fees: due 30 days after receipt of an MPCA bill. [Minn. R. 7002.0005-7002.0085] This permit establishes limits on the facility to keep it a minor source under New Source Review. The Permittee cannot make any change at the source that would make the source a major source under New Source Review until a permit amendment has been issued. This includes changes that might otherwise qualify as insignificant modifications and minor or moderate amendments. [Title I Condition: Avoid major modification under 40 CFR 52.21(b)(2) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. TFAC 1 4090 R. 7007.3000]

The Permittee shall submit an annual report by the 31st of January. The report shall describe the changes made at the Facility during the previous calendar year using the latest MPCA application forms. The report shall include information for any new, modified, or replaced Subject Items. The report shall document the PM, PM < 10 micron, PM < 2.5 micron, and VOC 12-month rolling sum calculations for the previous calendar year as described in COMG 2 and EQUI 7. The report shall be submitted with the annual Compliance Certification required by this permit. As part of the Annual Report, the Permittee shall verify and certify that the Facility has TFAC 1 4100 maintained minor source status for New Source Review. [Minn. R. 7007.0800, subp. 2(A)]

Equipment Labeling: The Permittee shall permanently affix a unique number to each emissions unit for tracking purposes. Each number shall correlate the unit to the appropriate Subject Item number used in this permit. The number can be affixed by placard, stencil, or other means. The number shall be maintained so that it is readable and visible at all times from a safe distance. If equipment is added, it shall be given a new unique number; TFAC 1 4110 numbers from replaced or removed equipment shall not be reused. [Minn. R. 7007.0800, subp. 2(A)] Equipment Inventory: The Permittee shall maintain a written list of all emissions units and control equipment on site. The Permittee shall update the list to include any replaced, modified, or new equipment prior to making the change.

The list shall correlate the units to the Subject Item numbers used in this permit and shall include the data on GI- 04, GI-05B, GI-05C, and GI-05F. The date of construction shall be the date the change was made for replaced, TFAC 1 4120 modified, or new equipment. [Minn. R. 7007.0800, subp. 2(A)]

The Permittee shall limit emissions of Particulate Matter <= 95.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described later in this permit.

If the Permittee replaces any existing PM-emitting coating equipment, adds new PM-emitting coating equipment, or modifies the existing equipment, such equipment is subject to this permit limit as well as all of the requirements of COMG 2. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable.

Solids contents for each material shall be determined as described under the Material Content requirement in COMG 2. [Minn. R. 7007.0800, subp. 2(A), avoid lrg PSEU 40 CFR pt. 64, Minn. R. 7017.0200, Title I Condition: COMG 2 1 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement

The Permittee shall limit emissions of PM < 10 micron <= 95.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described later in this permit.

If the Permittee replaces any existing PM10-emitting coating equipment, adds new PM10-emitting coating equipment, or modifies the existing equipment, such equipment is subject to this permit limit as well as all of the requirements of COMG 2. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable.

Solids contents for each material shall be determined as described under the Material Content requirement in COMG 2. [Minn. R. 7007.0800, subp. 2(A), avoid lrg PSEU 40 CFR pt. 64, Minn. R. 7017.0200, Title I Condition: COMG 2 2 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall limit emissions of PM < 2.5 micron <= 95.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described later in this permit.

If the Permittee replaces any existing PM2.5-emitting coating equipment, adds new PM2.5-emitting coating equipment, or modifies the existing equipment, such equipment is subject to this permit limit as well as all of the requirements of COMG 2. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable.

Solids contents for each material shall be determined as described under the Material Content requirement in COMG 2. [Minn. R. 7007.0800, subp. 2(A), avoid lrg PSEU 40 CFR pt. 64, Minn. R. 7017.0200, Title I Condition: COMG 2 3 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall limit emissions of Volatile Organic Compounds <= 225 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described later in this permit.

All VOC-emitting equipment at the Facility is subject to this limit except for insignificant activities as detailed in Appendix A of this permit. If the Permittee replaces any existing VOC-emitting equipment, adds new VOC- emitting equipment, or modifies the existing equipment, such equipment is subject to this permit limit as well as all of the requirements of COMG 2. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. The Permittee is not required to complete VOC calculations described in Minn. R. 7007.1200, subp. 2. A permit amendment will still be needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit.

VOC contents for each VOC-containing material shall be determined as described under the Material Content requirement in COMG 2. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. COMG 2 4 7007.3000] The Permittee shall vent emissions from all COMG 2 spray booths, including existing, modified, or new spray booths, to panel filters meeting the permit requirements for COMG 4. [Title I Condition: Avoid major source COMG 2 6 under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] EQUI 9 shall vent to control equipment meeting the requirements of COMG 4 and COMG 6. [Title I Condition: COMG 2 7 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] EQUI 7 shall vent to control equipment meeting the requirements of COMG 4 and COMG 5. [Title I Condition: COMG 2 8 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain the total quantity of all coatings and other VOC and solids-containing materials used at the facility. This shall be based on COMG 2 9 purchase records. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement

Particulate Matter: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement of this permit; 2) The Parculate Maer emissions for the previous month using the formulas speciﬁed in this permit; and 3) The 12-month rolling sum Particulate Matter emissions for the previous 12-month period by summing the COMG 2 10 monthly Particulate Matter emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

Particulate Matter: Monthly Calculation. The Permittee shall calculate Particulate Matter emissions from the spray booths using the following equations:

Particulate Matter (tons/month) = S(1-CE)(1-TE) S = (A1 x B1) + (A2 x B2) + (A3 x B3) + .....

Where: S = total solids used in tons/month; CE = overall control efficiency, as a fraction. For spray booths with certified hoods, this shall be 0.680 for single panel filter operation, and 0.782 for two panel filters operating in series. For spray booths operating in a total enclosure, this shall be 0.850 for single panel filter operation, and 0.978 for two panel filters operating in series; TE = transfer efficiency, as a fraction. This shall be 0.45 for all airless spray guns, and 0.95 for powder application; A# = amount of each solids-containing material sprayed, in tons/month; and COMG 2 11 B# = weight percent solids in A#, as a fraction. [Minn. R. 7007.0800, subps. 4-5] PM < 10 micron: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement of this permit; 2) The PM10 emissions for the previous month using the formulas speciﬁed in this permit; and 3) The 12-month rolling sum PM10 emissions for the previous 12-month period by summing the monthly PM10 COMG 2 12 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

PM < 10 micron: Monthly Calculation. The Permittee shall calculate PM10 emissions from the spray booths using the following equations:

PM10 (tons/month) = S(1-CE)(1-TE) S = (A1 x B1) + (A2 x B2) + (A3 x B3) + .....

Where: S = total solids used in tons/month; CE = overall control efficiency, as a fraction. For spray booths with certified hoods, this shall be 0.680 for single panel filter operation, and 0.782 for two panel filters operating in series. For spray booths operating in a total enclosure, this shall be 0.850 for single panel filter operation, and 0.978 for two panel filters operating in series; TE = transfer efficiency, as a fraction. This shall be 0.45 for all airless spray guns, and 0.95 for powder application; A# = amount of each solids-containing material sprayed, in tons/month; and COMG 2 13 B# = weight percent solids in A#, as a fraction. [Minn. R. 7007.0800, subps. 4-5] SI Id Sequence Requirement PM < 2.5 micron: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement of this permit; 2) The PM2.5 emissions for the previous month using the formulas speciﬁed in this permit; and 3) The 12-month rolling sum PM2.5 emissions for the previous 12-month period by summing the monthly COMG 2 14 PM2.5 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

PM < 2.5 micron: Monthly Calculation. The Permittee shall calculate PM2.5 emissions from the spray booths using the following equations:

PM2.5 (tons/month) = S(1-CE)(1-TE) S = (A1 x B1) + (A2 x B2) + (A3 x B3) + .....

Where: S = total solids used in tons/month; CE = overall control efficiency, as a fraction. For spray booths with certified hoods, this shall be 0.680 for single panel filter operation, and 0.782 for two panel filters operating in series. For spray booths operating in a total enclosure, this shall be 0.850 for single panel filter operation, and 0.978 for two panel filters operating in series; TE = transfer efficiency, as a fraction. This shall be 0.45 for all airless spray guns, and 0.95 for powder application; A# = amount of each solids-containing material sprayed, in tons/month; and COMG 2 15 B# = weight percent solids in A#, as a fraction. [Minn. R. 7007.0800, subps. 4-5] Volale Organic Compounds: Monthly Recordkeeping -- VOC Emissions. By the 15th of the month, the Permiee shall calculate and record the following: 1) The total usage of VOC-containing materials for the previous calendar month using the daily usage records. This record shall also include the VOC and solids contents of each material as determined by the Material Content requirement of this permit; 2) The VOC emissions for the previous month using the formulas speciﬁed in this permit; and 3) The 12-month rolling sum VOC emissions for the previous 12-month period by summing the monthly VOC COMG 2 16 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5] Volatile Organic Compounds: Monthly Calculation -- VOC Emissions. The Permittee shall calculate VOC emissions using the following equation:

VOC (tons/month) = (A1 x B1) + (A2 x B2) + (A3 x B3) + .....

where: A# = amount of each VOC-containing material used, in tons/month; and COMG 2 17 B# = weight percent VOC in A#, as a fraction. [Minn. R. 7007.0800, subps. 4-5]

Material Content. VOC and Solids (PM, PM<10 microns, and PM<2.5 microns) contents in coating materials shall be determined by the Safety Data Sheet (SDS) or the Material Safety Data Sheet (MSDS) provided by the supplier for each material used. If a material content range is given on the SDS or the MSDS, the highest number in the range shall be used in all compliance calculations. If there is information provided in the Regulatory Section of the SDS, the highest number in the range of that section may be used. When using the MSDS as the basis of calculating particulate emissions, the conservative assumption is made that PM consists entirely of PM less than 10 microns or less than 2.5 microns. Other alternative methods approved by the MPCA may be used to determine the VOC and solids contents. The Commissioner reserves the right to require the Permittee to determine the VOC and solids contents of any material, according to EPA or ASTM reference methods. If an EPA or ASTM reference method is used for material content determination, the data obtained shall supersede the COMG 2 18 SDS or the MSDS. [Minn. R. 7007.0800, subps. 4-5] SI Id Sequence Requirement

Maximum Contents of Materials: The Permittee assumed certain worst-case contents of materials when determining the short term potential to emit of units in COMG 2. These assumptions are listed in Appendix B of this permit. Changing to a material that has a higher content of any of the given pollutants is considered a change in method of operation that must be evaluated under Minn. R. 7007.1200, subp. 3 to determine if a COMG 2 4160 permit amendment or notification is required under Minn. R. 7007.1150. [Minn. R. 7005.0100, subp. 35a]

The facility is an existing affected source that applies general use coatings, high performance coatings, and extreme performance fluoropolymer coatings to miscellaneous metal products. The compliance date for 40 CFR Part 63, subpart MMMM for this facility is October 1, 2008.

The Permittee must meet the notification requirements in 40 CFR Section 63.3910 according to the dates specified in that section and in 40 CFR pt. 63, subp. A. Some of the notifications must be submitted before the compliance dates described in paragraphs (a) through (c) of 40 CFR Section 63.3883. [40 CFR 63.3881(a)(1), (2), COMG 3 1 (3), and (6), 40 CFR 63.3883(b), 40 CFR 63.3883(d), Minn. R. 7011.8090]

The affected source is the collection of all of the items listed below that are used for surface coating of miscellaneous metal parts and products within each subcategory.

1) All coang operaons as deﬁned in 40 CFR Secon 63.3981;

2) All storage containers and mixing vessels in which coatings, thinners and/or other additives, and cleaning materials are stored or mixed;

3) All manual and automated equipment and containers used for conveying coatings, thinners and/or other addives, and cleaning materials; and

4) All storage containers and all manual and automated equipment and containers used for conveying waste COMG 3 2 materials generated by a coating operation. [40 CFR 63.3882(b), Minn. R. 7011.8090] For each general use coating operation, the Permittee shall limit HAPs - Organic <= 2.6 pounds per gallon coating solids 12-month rolling average (pounds organic HAPs emitted/gallon of coating solids) used during each 12-month compliance period.

General use coating has the meaning given in 40 CFR Section 63.3981. [40 CFR 63.3890(b)(1), Minn. R. COMG 3 3 7011.8090] For each high performance coating operation, the Permittee shall limit HAPs - Organic <= 27.5 pounds per gallon coating solids 12-month rolling average (pounds organic HAPs emitted/gallon of coating solids) used during each 12-month compliance period.

High performance coating has the meaning given in 40 CFR Section 63.3981. [40 CFR 63.3890(b)(2), Minn. R. COMG 3 4 7011.8090] For each extreme performance fluoropolymer coating operation, the Permittee shall limit HAPs - Organic <= 12.4 pounds per gallon coating solids 12-month rolling average (pounds organic HAPs emitted/gallon of coating solids) used during each 12-month compliance period.

Extreme performance fluoropolymer coating has the meaning given in 40 CFR Section 63.3981. [40 CFR COMG 3 5 63.3890(b)(5), Minn. R. 7011.8090]

If the Permittee's surface coating operations meet the applicability criteria of more than one of the subcategory emission limits specified in paragraphs (a) or (b) of 40 CFR Section 63.3890, the Permittee may comply separately with each subcategory emission limit or comply with a facility-specific emission limit as described in COMG 3 6 40 CFR Section 63.3890(c)(2). [40 CFR 63.3890(c), Minn. R. 7011.8090] SI Id Sequence Requirement

The Permittee may calculate and comply with a facility-specific emission limit as described in 40 CFR Section 63.3890(c)(2)(i) through (iii). If the Permittee elects to comply using the facility-specific emission limit alternative, then compliance with the facility-specific emission limit and the emission limitations in 40 CFR pt. 63, subp. MMMM for all surface coating operations constitutes compliance with 40 CFR pt. 63, subp. MMMM and other applicable surface coating NESHAP. In calculating a facility-specific emission limit, the Permittee must include coating activities that meet the applicability criteria of the other subcategories and constitute more than 1 percent of total coating activities. Coating activities that meet the applicability criteria of other surface coating NESHAP but comprise less than 1 percent of coating activities need not be included in the determination of predominant activity but must be included in the compliance calculation. [40 CFR COMG 3 7 63.3890(c)(2), Minn. R. 7011.8090]

(i) The Permittee is required to calculate the facility-specific emission limit for the facility when the Permittee submits the notification of compliance status required in 40 CFR Section 63.3910(c), and on a monthly basis aerward using the coang data for the relevant 12-month compliance period.

(ii) The Permittee shall use Equation 1 of 40 CFR Section 63.3890 to calculate the facility-specific emission limit for the surface coating operations for each 12-month compliance period. Equation 1 of 40 CFR Section 63.3890 COMG 3 8 is provided in Appendix C to this permit. [40 CFR 63.3890(c)(2)(i) and (ii), Minn. R. 7011.8090]

Based on the current and expected operations of the affected source, this permit only includes the emission rate without add-on controls option specified in 40 CFR Section 63.3891(b). If the Permittee later chooses to switch to or add one or both of the other compliance options allowed in the standard, the Permittee shall comply with all applicable portions of 40 CFR pt. 63, subp. MMMM for those options. In addition, the Permittee shall apply for a permit amendment, as appropriate (e.g., to add applicable NESHAP language, installation of an COMG 3 9 oxidizer, etc.). [40 CFR 63.3891, Minn. R. 7007.1150, Minn. R. 7011.8090]

The Permittee must include all coatings (as defined in 40 CFR Section 63.3981), thinners and/or other additives, and cleaning materials used in the affected source when determining whether the organic HAP emission rate is equal to or less than the applicable emission limit in 40 CFR Section 63.3890 ("HAP emission limit"). To make this determination, the Permittee must use at least one of the three compliance options listed in paragraphs (a) through (c) of 40 CFR Secon 63.3891.

As stated earlier, this permit only includes the requirements associated with emission rate without add-on controls opon speciﬁed in 40 CFR Secon 63.3891(b).

Even so, the Permittee may apply any of the compliance options to an individual coating operation, or to multiple coating operations as a group, or to the entire affected source. The Permittee may use different compliance options for different coating operations, or at different times on the same coating operation. The Permittee may employ different compliance options when different coatings are applied to the same part, or when the same coating is applied to different parts. However, the Permittee may not use different compliance options at the same time on the same coating operation. If the Permittee switches between compliance options for any coating operation or group of coating operations, the Permittee must document this switch as required by 40 CFR Section 63.3930(c), and the Permittee must report it in the next semiannual compliance report listed COMG 3 10 elsewhere in this permit. [40 CFR 63.3891, Minn. R. 7011.8090]

Emission rate without add-on controls option. The Permittee shall demonstrate that, based on the coatings, thinners and/or other additives, and cleaning materials used in the coating operation(s), the organic HAP emission rate for the coating operation(s) is less than or equal to the HAP emission limit, calculated as a rolling 12-month emission rate and determined on a monthly basis. The Permittee must meet all the requirements of 40 CFR Sections 63.3950, 63.3951, and 63.3952 to demonstrate compliance with the emission limit using this COMG 3 11 option. [40 CFR 63.3891(b), Minn. R. 7011.8090]

For any coating operation(s) on which the Permittee uses the emission rate without add-on controls option, the COMG 3 12 Permittee is not required to meet any operating limits. [40 CFR 63.3892(a), Minn. R. 7011.8090] SI Id Sequence Requirement

For any coating operation(s) on which the Permittee uses the emission rate without add-on controls option, the COMG 3 13 Permittee is not required to meet any work practice standards. [40 CFR 63.3893(a), Minn. R. 7011.8090]

The Permiee must be in compliance with the emission limitaons as speciﬁed below:

1) Any coating operation(s) for which the Permittee uses the emission rate without add-on controls option, as speciﬁed in 40 CFR Secon 63.3891(b), must be in compliance with the HAP emission limit at all mes.

2) The Permittee must always operate and maintain the affected source according to the provisions in 40 CFR COMG 3 14 Section 63.6(e)(1)(i). [40 CFR 63.3900(a)(1), 40 CFR 63.3900(b), Minn. R. 7011.8090]

The Permittee must complete the initial compliance demonstration for the initial compliance period according to the requirements of 40 CFR Section 63.3951. The initial compliance period begins on 1/2/07 and ends on 1/31/08.

The Permittee must determine the mass of organic HAP emissions and volume of coating solids used each month and then calculate an organic HAP emission rate at the end of the initial compliance period. The initial compliance demonstration includes the calculations according to 40 CFR Section 63.3951 and supporting documentation showing that during the initial compliance period the organic HAP emission rate was equal to or COMG 3 15 less than the HAP emission limit. [40 CFR 63.3950, Minn. R. 7011.8090]

The Permittee may use the emission rate without add-on controls option for any individual coating operation, for any group of coating operations in the affected source, or for all the coating operations in the affected source. The Permittee must use either the compliant material option or the emission rate with add-on controls option for any coating operation in the affected source for which the Permittee does not use this option. To demonstrate initial compliance using the emission rate without add-on controls option, the coating operation or group of coang operaons must meet the applicable HAP emission limit.

The Permittee must conduct a separate initial compliance demonstration for each general use coating operaon. The Permiee must meet all the requirements of 40 CFR Secon 63.3951.

When calculating the organic HAP emission rate, do not include any coatings, thinners and/or other additives, or cleaning materials used on coating operations for which the Permittee uses the compliant material option or the emission rate with add-on controls opon.

The Permittee does not need to redetermine the mass of organic HAP in coatings, thinners and/or other additives, or cleaning materials that have been reclaimed on-site (or reclaimed off-site if the Permittee has documentation showing that they received back the exact same materials that were sent off-site) and reused in the coating operation for which the Permittee uses the emission rate without add-on controls option. If the Permittee uses coatings, thinners and/or other additives, or cleaning materials that have been reclaimed onsite, the amount of each used in a month may be reduced by the amount of each that is reclaimed. That is, the amount used may be calculated as the amount consumed to account for materials that are reclaimed. [40 CFR COMG 3 16 63.3951, Minn. R. 7011.8090] SI Id Sequence Requirement

Mass Fraction of HAP: The Permittee shall determine the mass fraction of organic HAP for each coating, thinner and/or other addive, and cleaning material used during each month by using one of the following opons:

1) The Permittee may use Method 311 (appendix A to 40 CFR pt. 63) for determining the mass fraction of organic HAP. Use the procedures specified in 40 CFR Section 63.3941(a)(1)(i) and (ii) when performing a Method 311 test;

2) For coatings, the Permittee may use Method 24 (appendix A to 40 CFR Part 60) to determine the mass fraction of nonaqueous volatile matter and use that value as a substitute for mass fraction of organic HAP. For reactive adhesives in which some of the HAP react to form solids and are not emitted to the atmosphere, the Permittee may use the alternative method contained in appendix A to 40 CFR pt. 63, subp. PPPP, rather than Method 24. The Permittee may use the volatile fraction that is emitted, as measured by the alternative method in appendix A to subpart PPPP, as a substute for the mass fracon of organic HAP;

3) The Permittee may use an alternative test method for determining the mass fraction of organic HAP as COMG 3 17 speciﬁed in 40 CFR Secon 63.3941(a)(3; [40 CFR 63.3951(a), Minn. R. 7011.8090]

4) The Permittee may rely on information other than the three options given above, such as manufacturer's formulation data, if it represents each organic HAP that is present at 0.1 percent by mass or more for OSHA- defined carcinogens as specified in 29 CFR Section 1910.1200(d)(4) and at 1.0 percent by mass or more for other compounds. For reactive adhesives in which some of the HAP react to form solids and are not emitted to the atmosphere, the Permittee may rely on manufacturer's data that expressly states the organic HAP or volatile matter mass fraction emitted. If there is a disagreement between such information and results of a test conducted according to the three other options, then the test method results will take precedence unless, after consultation, the Permittee can demonstrate to the satisfaction of the Agency that the formulation data are correct; or

5) Solvent blends may be listed as single components for some materials in data provided by manufacturers or suppliers. Solvent blends may contain organic HAP which must be counted toward the total organic HAP mass fraction of the materials. When test data and manufacturer's data for solvent blends are not available, the Permittee may use the default values for the mass fraction of organic HAP in these solvent blends listed in Table 3 or 4 of 40 CFR pt. 63, subp. MMMM. If these tables are used, the Permittee must use the values in Table 3 for all solvent blends that match Table 3 entries according to the instructions for Table 3, and the Permittee may use Table 4 only if the solvent blends in the materials used do not match any of the solvent blends in Table 3 and the Permittee knows only whether the blend is aliphatic or aromatic. However, if the results of a Method 311 (appendix A to 40 CFR pt. 63) test indicate higher values than those listed on Table 3 or 4, the Method 311 results will take precedence unless, after consultation, you demonstrate to the satisfaction of the Agency the COMG 3 17 formulation data are correct. [40 CFR 63.3951(a), Minn. R. 7011.8090] SI Id Sequence Requirement

Volume Fraction of Solids: The Permittee shall determine the volume fraction of coating solids (gallon of coating solids per gallon of coating) for each coating used during each month by one of the methods given below. If test results obtained according to item 1 below do not agree with the information obtained under items 3 or 4 below, the test results will take precedence unless, after consultation, the Permittee can demonstrate to the sasfacon of the Agency that the formulaon data are correct.

1) The Permiee may use ASTM methods as speciﬁed in 40 CFR Secon 63.3941(b)(1);

2) The Permittee may use an alternative test method for determining the solids content of each coating as speciﬁed in 40 CFR Secon 63.3941(b)(2);

3) The Permittee may obtain the volume fraction of coating solids for each coating from the supplier or manufacturer; or

4) The Permittee may determine the volume fraction of coating solids using the equation in 40 CFR Section COMG 3 18 63.3941(b)(4). [40 CFR 63.3951(b), Minn. R. 7011.8090]

Density: The Permittee shall determine the density of each liquid coating, thinner and/or other additive, and cleaning material used during each month from test results using ASTM Method D1475-98, "Standard Test Method for Density of Liquid Coatings, Inks, and Related Products" (incorporated by reference, see 40 CFR Section 63.14), information from the supplier or manufacturer of the material, or reference sources providing density or specific gravity data for pure materials. If the Permittee is including powder coatings in the compliance determination, determine the density of powder coatings, using ASTM Method D5965-02, "Standard Test Methods for Specific Gravity of Coating Powders" (incorporated by reference, see 40 CFR Section 63.14), or information from the supplier. If there is disagreement between ASTM Method D1475-98 or ASTM Method D5965-02 test results and other such information sources, the test results will take precedence unless, after consultation the Permittee demonstrates to the satisfaction of the Agency that the formulation data are correct. If the Permittee purchases materials or monitor consumption by weight instead of volume, the Permittee does not need to determine material density. Instead, the Permittee may use the material weight in place of the combined terms for density and volume in Equations 1A, 1B, 1C, and 2 of 40 CFR Section 63.3951. Equations 1A, 1B, 1C, and 2 of 40 CFR Section 63.3951 are provided in Appendix C to this permit. [40 CFR COMG 3 19 63.3951(c), Minn. R. 7011.8090]

Volume: The Permittee shall determine the volume (gallons) of each coating, thinner and/or other additive, and cleaning material used during each month by measurement or usage records. If the Permittee purchases materials or monitors consumption by weight instead of volume, the Permittee does not need to determine the volume of each material used. Instead, the Permittee may use the material weight in place of the combined terms for density and volume in Equations 1A, 1B, and 1C of 40 CFR Section 63.3951. Equations 1A, 1B, and 1C COMG 3 20 of 40 CFR Section 63.3951 are provided in Appendix C to this permit. [40 CFR 63.3951(d), Minn. R. 7011.8090] SI Id Sequence Requirement The mass of organic HAP emissions is the combined mass of organic HAP contained in all coatings, thinners and/or other additives, and cleaning materials used during each month. The Permittee shall calculate the following:

1) Calculate the mass of organic HAP emissions using Equaon 1 of 40 CFR Secon 63.3951.

2) Calculate the lb organic HAP in the coatings used during the month using Equation 1A of 40 CFR Section 63.3951.

3) Calculate the lb of organic HAP in the thinners and/or other additives used during the month using Equation 1B of 40 CFR Secon 63.3951.

4) Calculate the lb organic HAP in the cleaning materials used during the month using Equation 1C of 40 CFR Secon 63.3951.

Equations 1, 1A, 1B, and 1C of 40 CFR Section 63.3951 are provided in Appendix C to this permit. [40 CFR COMG 3 21 63.3951(e), Minn. R. 7011.8090]

The Permittee shall determine the total volume of coating solids used, gallons, which is the combined volume of coating solids for all the coatings used during each month, using Equation 2 of 40 CFR Section 63.3951. Equation COMG 3 22 2 of 40 CFR Section 63.3951 is provided in Appendix C to this permit. [40 CFR 63.3951(f), Minn. R. 7011.8090]

The Permittee shall calculate the organic HAP emission rate for the compliance period, lb organic HAP emitted per gallon coating solids used, using Equation 3 of 40 CFR Section 63.3951. Equation 3 of 40 CFR Section 63.3951 COMG 3 23 is provided in Appendix C to this permit. [40 CFR 63.3951(g), Minn. R. 7011.8090]

To demonstrate continuous compliance, the organic HAP emission rate for each compliance period, determined according to 40 CFR Section 63.3951(a) through (g), must be less than or equal to the HAP emission limit. A compliance period consists of 12 months. Each month after the end of the initial compliance period described in 40 CFR Section 63.3950 is the end of a compliance period consisting of that month and the preceding 11 months. The Permittee must perform the calculations in 40 CFR Section 63.3951(a) through (g) on a monthly basis using data from the previous 12 months of operation. If the Permittee is complying with a facility-specific emission limit under 40 CFR Section 63.3890(c), the Permittee must also perform the calculation using Equation 1 in 40 CFR Section 63.3890(c)(2) on a monthly basis using the data from the previous 12 months of operation. Equation 1 of 40 CFR Section 63.3890 is provided in Appendix C to this permit. [40 CFR 63.3952(a), Minn. R. COMG 3 24 7011.8090]

If the organic HAP emission rate for any 12-month compliance period exceeded the HAP emission limit, this is a deviation from the emission limitation for that compliance period and must be reported as specified in 40 CFR COMG 3 25 Sections 63.3910(c)(6) and 63.3920(a)(6). [40 CFR 63.3952(b), Minn. R. 7011.8090] HAPs - Organic: Monthly Recordkeeping -- Organic HAP Emissions.

By the 15th of the month, the Permiee shall calculate and record the following:

1) The total mass of organic HAP emissions for the coatings, thinners and/or other additives, and cleaning materials used in the previous month calculated using Equations 1, 1A, 1B, 1C, and 2 of 40 CFR Section 63.3951;

2) The total volume of coating solids used in the previous month calculated using Equation 2 of 40 CFR Section 63.3951; and

3) The 12-month organic HAP emission rate for the previous 12-month period calculated using Equation 3 of 40 CFR Secon 63.3951.

Equations 1, 1A, 1B, 1C, 2, and 3 of 40 CFR Section 63.3951 are provided in Appendix C to this permit. [Minn. R. COMG 3 26 7007.0800, subps. 4-5] SI Id Sequence Requirement

The Permittee must collect and keep records of the data and information specified below. Failure to collect and keep these records is a deviaon from the applicable standard.

1) A copy of each notification and report that the Permittee submitted to comply with 40 CFR pt. 63, subp. MMMM, and the documentaon supporng each noﬁcaon and report;

2) Data used in the calculation of the facility-specific emission limit for each 12-month compliance period included in the semi-annual compliance reports;

3) A current copy of information provided by materials suppliers or manufacturers, such as manufacturer's formulation data, or test data used to determine the mass fraction of organic HAP and density for each coating, thinner and/or other additive, and cleaning material, and the volume fraction of coating solids for each coating. If the Permittee conducted testing to determine mass fraction of organic HAP, density, or volume fraction of coating solids, the Permittee must keep a copy of the complete test report. If the Permittee uses information provided to the Permittee by the manufacturer or supplier of the material that was based on testing, the Permittee must keep the summary sheet of results provided to the Permittee by the manufacturer or supplier. The Permittee are not required to obtain the test report or other supporting documentation from the manufacturer or supplier; [40 CFR 63.3930(a)-(b), 40 CFR 63.3930(c)(1) and (c)(3), 40 CFR 63.3930(d)-(g), 40 CFR COMG 3 27 63.3930(j), 40 CFR 63.3952(d), Minn. R. 7011.8090]

4) For each compliance period, the records specified below: - A record of the coating operations on which the Permittee used each compliance option and the time periods (beginning and ending dates and times) for each option the Permittee used; and - A record of the calculation of the total mass of organic HAP emissions for the coatings, thinners and/or other additives, and cleaning materials used each month using Equations 1, 1A, 1B, 1C, and 2 of 40 CFR Section 63.3951; the calculation of the total volume of coating solids used each month using Equation 2 of 40 CFR Section 63.3951; and the calculation of each 12-month organic HAP emission rate using Equation 3 of 40 CFR Section 63.3951. Equations 1, 1A, 1B, 1C, 2, and 3 of 40 CFR Section 63.3951 are provided in Appendix C to this permit.

5) A record of the name and volume of each coating, thinner and/or other additive, and cleaning material used during each compliance period;

6) A record of the mass fraction of organic HAP for each coating, thinner and/or other additive, and cleaning material used during each compliance period unless the material is tracked by weight;

7) A record of the volume fraction of coating solids for each coating used during each compliance period;

8) The density for each coating, thinner and/or other additive, and cleaning material used during each compliance period; and

9) The Permittee must keep records of the date, time, and duration of each deviation. [40 CFR 63.3930(a)-(b), 40 CFR 63.3930(c)(1) and (c)(3), 40 CFR 63.3930(d)-(g), 40 CFR 63.3930(j), 40 CFR 63.3952(d), Minn. R. COMG 3 27 7011.8090] SI Id Sequence Requirement

The Permittee's records must be in a form suitable and readily available for expeditious review, according to 40 CFR Section 63.10(b)(1). Where appropriate, the records may be maintained as electronic spreadsheets or as a database.

As specified in 40 CFR Section 63.10(b)(1), the Permittee must keep each record for 5 years following the date of each occurrence, measurement, maintenance, correcve acon, report, or record.

The Permittee must keep each record on-site for at least 2 years after the date of each occurrence, measurement, maintenance, corrective action, report, or record according to 40 CFR Section 63.10(b)(1). The Permittee may keep the records off-site for the remaining 3 years. [40 CFR 63.3931, 40 CFR 63.3952(d), Minn. R. COMG 3 29 7011.8090]

The Permittee shall submit a semiannual compliance report: Due semiannually, by the 31st of January and July. The first semiannual compliance report submitted by the Permittee shall cover the calendar half-year in which the permit is issued. The first report of each calendar year covers January 1 - June 30. The second report of each calendar year covers July 1 - December 31. The semiannual compliance report shall contain the information COMG 3 30 specified in COMG 3 of this permit. [40 CFR 63.3920(a)(1)(i), (ii), and (iii), Minn. R. 7011.8090]

Content of Semiannual Compliance Report: At a minimum, the report shall include:

1) Company name and address;

2) Statement by a responsible official with that official's name, title, and signature, certifying the truth, accuracy, and completeness of the content of the report;

3) Date of report and beginning and ending dates of the reporting period. The reporting period is the 6-month period ending on June 30 or December 31. Note that the information reported for each of the 6 months in the reporng period will be based on the last 12 months of data prior to the date of each monthly calculaon;

4) Identification of the compliance option or options specified in 40 CFR Section 63.3891 that the Permittee used on each coating operation during the reporting period. If the Permittee switched between compliance options during the reporting period, the Permittee must report the beginning and ending dates for each option the Permiee used; [40 CFR 63.3920(a)(3)(i)-(v) and (vii), 40 CFR 63.3920(a)(4) and (6), 40 CFR 63.3952(c), Minn. COMG 3 31 R. 7011.8090] SI Id Sequence Requirement

5) If the Permittee used the emission rate without add-on controls or the emission rate with add-on controls compliance option (40 CFR Section 63.3891(b) or (c)), the calculation results for each rolling 12-month organic HAP emission rate during the 6-month reporting period;

6) If the Permittee used the facility-specific emission limit alternative (40 CFR Section 63.3890(c)(2)), include the calculation of the facility-specific emission limit for each 12-month compliance period during the 6-month reporting period;

7) If there were no deviations from the applicable HAP emission limit, the semiannual compliance report must include a statement that there were no deviations from the emission limitations during the reporting period; and

8) If there was a deviation from the applicable HAP emission limit, the semiannual compliance report must contain the following information: - The beginning and ending dates of each compliance period during which the 12-month organic HAP emission rate exceeded the applicable HAP emission limit; - The calculations used to determine the 12-month organic HAP emission rate for the compliance period in which the deviation occurred. The Permittee must submit the calculations for Equations 1, 1A, 1B, 1C, 2, and 3 of 40 CFR Section 63.3951. The Permittee does not need to submit background data supporting these calculations (e.g., information provided by materials suppliers or manufacturers, or test reports); and - A statement of the cause of each deviation.[40 CFR 63.3920(a)(3)(i)-(v) and (vii), 40 CFR 63.3920(a)(4) and (6), COMG 3 31 40 CFR 63.3952(c), Minn. R. 7011.8090]

The Permiee must comply with all applicable requirements of 40 CFR pt. 63, subp. A as follows:

40 CFR 63.1(a); 40 CFR 63.1(b)(1); 40 CFR 63.1(b)(3); 40 CFR 63.1(c)(1); 40 CFR 63.1(c)(5); 40 CFR 63.1(e); 40 CFR 63.2; 40 CFR 63.3; 40 CFR 63.4(a)-(c); 40 CFR 63.5(a)-(b); 40 CFR 63.5(d)-(f); 40 CFR 63.6(a)-(c); 40 CFR 63.6(e)(1); 40 CFR 63.6(f)(2)-(3); 40 CFR 63.6(g); 40 CFR 63.6(i); 40 CFR 63.6(j); 40 CFR 63.7(a)(1); 40 CFR 63.7(a)(3); 40 CFR 63.7(f); 40 CFR 63.8(b); 40 CFR 63.8(f)(1)-(5); 40 CFR 63.9(a)-(d); 40 CFR 63.9(h); 40 CFR 63.9(i); 40 CFR 63.9(j); 40 CFR 63.10(a)(5); 40 CFR 63.10(a)(6); 40 CFR 63.10(a)(7); 40 CFR 63.10(b)(1); 40 CFR 63.10(b)(2)(vi)-(xii); 40 CFR 63.10(b)(2)(xiv); 40 CFR 63.10(b)(3); 40 CFR 63.10(c)(1)-(6); 40 CFR 63.10(c)(9)-(15); 40 CFR 63.10(d)(1)-(2); 40 CFR 63.10(d)(4); 40 CFR 63.10(f); 40 CFR 63.12; 40 CFR 63.13; 40 CFR 63.14; and 40 CFR 63.15.

A copy of 40 CFR pt. 63, subp. A is included in Appendix D. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 63.3901, 40 CFR pt. 63, subp. A, 40 CFR pt. 63, subp. MMMM(Table 2), Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150-1500, Minn. R. 7011.7000, Minn. R. COMG 3 32 7011.8090, Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100] The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Particulate Matter >= 85 percent control efficiency. [Minn. R. 7011.0070, subp. 1(A), Title I Condition: Avoid COMG 4 4130 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 85 percent control efficiency. [Minn. R. 7011.0070, subp. 1(A), Title I Condition: Avoid major COMG 4 4140 source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 2.5 micron >= 85 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) COMG 4 4150 and Minn. R. 7007.3000] The Permittee shall vent emissions from all COMG 2 spray booths, including existing, modified, or new spray booths, to panel filters meeting the permit requirements for COMG 4. [Title I Condition: Avoid major source COMG 4 4160 under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Panel filters operating in a total enclosure shall meet the requirements of COMG 4 and COMG 5. Panel filters operating with hood capture shall meet the requirements of COMG 4 and COMG 6. [Title I Condition: Avoid COMG 4 17280 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement Panel filters controlling EQUI 7 (TREA 4 and TREA 8) shall be operated in series according to the requirements of COMG 4 17310 COMG 5. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2] Panel filters controlling EQUI 9 (TREA 9 and TREA 10) shall be operated in series according to the requirements COMG 4 17340 of COMG 6. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2]

If the Permittee replaces any existing panel filter, adds new panel filters, or modifies the panel filters listed in COMG 4, such equipment is subject to all of the requirements of COMG 4. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. [Title I Condition: Avoid COMG 4 17360 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Daily Inspections: At least once per 24-hour period, the Permittee shall visually inspect the condition of the panel filter with respect to alignment, saturation, tears, holes and any other matter that may affect the filter's performance. The Permittee shall record the time and date of each inspection and any actions resulting from the inspection. [40 CFR 64.3, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR COMG 4 17365 52.21(b)(1)(i) and Minn. R. 7007.3000] Periodic Inspections: The Permittee shall inspect the control equipment components as required by the manufacturing specifications. The Permittee shall maintain a written record of these inspections. [40 CFR 64.3, COMG 4 17366 Minn. R. 7017.0200] Corrective Actions: The Permittee shall take corrective action as soon as possible if the panel filter or any of its components are found during the inspecons to need repair.

Corrective actions shall include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the panel filter. The Permittee shall keep a record of the type and date of any corrective action taken for the panel filter. [40 CFR COMG 4 17367 64.7(d)] The Permittee shall operate and maintain the panel filter in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. COMG 4 17368 [Minn. R. 7007.0800, subp. 14] Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing inspection requirements, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. COMG 4 17369 7017.0200]

As required by 40 CFR Section 64.9(a)(2), for the Semi-Annual Deviations Report required by this permit and/or the Notification of Deviations Endangering Human Health and the Environment required by this permit, as applicable, the Permittee shall include the following related to the monitoring identified as required by 40 CFR pt. 64: 1) Summary information on the number, duration, and cause of excursions or exceedances, as applicable, and the corrective action taken; and 2) Summary information on the number, duration, and cause COMG 4 17370 for monitor downtime incidents. [40 CFR 64.9(a)(2), Minn. R. 7017.0200]

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 85 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 97.8 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 5 4130 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 85 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 97.8 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 5 4140 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 85 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 97.8 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 5 4150 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Panel filters controlling EQUI 7 (TREA 4 and TREA 8) shall be operated in series. [Minn. R. 7007.0800, subp. 14, COMG 5 4170 Minn. R. 7007.0800, subp. 2]

If the Permittee replaces any existing panel filter, adds new panel filters, or modifies the panel filters listed in COMG 5, such equipment is subject to all of the requirements of COMG 4 and COMG 5. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. [Title I COMG 5 4180 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 68 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 78.2 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 6 1 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 68 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 78.2 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 6 2 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 68 percent control efficiency. When operating two panel filters in series, the Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 78.2 percent control efficiency. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2, Title I COMG 6 3 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Panel filters controlling EQUI 9 (TREA 9 and TREA 10) shall be operated in series. [Minn. R. 7007.0800, subp. 14, COMG 6 14 Minn. R. 7007.0800, subp. 2]

If the Permittee replaces any existing panel filter, adds new panel filters, or modifies the panel filters listed in COMG 6, such equipment is subject to all of the requirements of COMG 4 and COMG 6. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable. [Title I COMG 6 16 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

Hood Certification and Evaluation: The Permittee shall maintain the most current record of the hood evaluation and certification on site. The control device hood must be evaluated by a testing company as specified in Minn. R. 7011.0072, subp. 2(A) and must conform to the design and operating requirements listed in Minn. R. 7011.0072, subps. 2(B) and 3. The hood certification must address how cross-drafts are accommodated in the design (e.g., higher face velocity, oversized hood, etc.) and the Permittee shall certify this as specified in Minn. R. 7011.0072, subps. 2 and 3. [Minn. R. 7007.0800, subp. 2, Title I Condition: Avoid major source under 40 CFR COMG 6 17 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement

Annual Hood Evaluation: The Permittee shall measure and record at least once every 12 months the fan rotation speed, fan power draw, or face velocity of each hood, or other comparable air flow parameter that was measured during the most recent hood certification to verify the hood design and operation parameters meet or exceed the parameters measured during the most recent hood evaluation conducted according to Minn. R. 7011.0072, subps. 2 & 3 as required by Minn. R. 7011.0072, subp. 4. The Permittee shall maintain a copy of the annual evaluations on site for 5 years. [Minn. R. 7007.0800, subp. 2, Title I Condition: Avoid major source under COMG 6 18 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall limit emissions of Particulate Matter <= 88.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described in EQUI 7, using the formulas speciﬁed in COMG 2.

Solids contents for each material shall be determined as described under the Material Content requirement in COMG 2. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. EQUI 7 1 7007.3000] The Permittee shall limit emissions of PM < 10 micron <= 88.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described in EQUI 7, using the formulas specified in COMG 2.

Solids contents for each material shall be determined as described under the Material Content requirement in COMG 2. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. EQUI 7 2 7007.3000] The Permittee shall limit emissions of PM < 2.5 micron <= 88.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described in EQUI 7, using the formulas speciﬁed in COMG 2.

The Permittee shall limit emissions of Volatile Organic Compounds <= 27.0 tons per year 12-month rolling sum to be calculated by the 15th day of each month for the previous 12-month period as described in COMG 2.

VOC contents for each VOC-containing material shall be determined as described under the Material Content requirement in COMG 2. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and EQUI 7 4 Minn. R. 7007.3000] EQUI 7 5 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 7 6 7011.0715, subp. 1(A)] Transfer efficiency. The Permittee shall use a coating application method with at least 45 percent transfer efficiency. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. EQUI 7 8 7007.3000] The Permittee shall vent emissions from EQUI 7 to control equipment meeting the requirements of TREA 4 whenever EQUI 7 operates. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and EQUI 7 15 Minn. R. 7007.3000] Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain the total quantity of all coatings used from EQUI 7. This shall be based on purchase records. [CAAA of 1990, Title I EQUI 7 17 Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement

Particulate Matter: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material from EQUI 7 for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement in COMG 2 of this permit; 2) The Particulate Matter emissions for the previous month using the formulas specified in COMG 2 of this permit; and 3) The 12-month rolling sum Particulate Matter emissions for the previous 12-month period by summing the EQUI 7 19 monthly Particulate Matter emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

PM < 10 micron: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material from EQUI 7 for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement in COMG 2 of this permit; 2) The PM10 emissions for the previous month using the formulas specified in COMG 2 of this permit; and 3) The 12-month rolling sum PM10 emissions for the previous 12-month period by summing the monthly PM10 EQUI 7 20 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

PM < 2.5 micron: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of each solids-containing material from EQUI 7 for the previous calendar month using the daily usage records. This record shall also include solids contents of each material as determined by the Material Content requirement in COMG 2 of this permit; 2) The PM2.5 emissions for the previous month using the formulas specified in COMG 2 of this permit; and 3) The 12-month rolling sum PM2.5 emissions for the previous 12-month period by summing the monthly EQUI 7 21 PM2.5 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

Volatile Organic Compounds: Monthly Recordkeeping. By the 15th of the month, the Permittee shall calculate and record the following: 1) The total usage of VOC-containing materials from EQUI 7 for the previous calendar month using the daily usage records. This record shall also include the VOC and solids contents of each material as determined by the Material Content requirement in COMG 2 of this permit; 2) The VOC emissions for the previous month using the formulas specified in COMG 2 of this permit; and 3) The 12-month rolling sum VOC emissions for the previous 12-month period by summing the monthly VOC EQUI 7 4170 emissions data for the previous 12 months. [Minn. R. 7007.0800, subps. 4-5]

Recordkeeping of coating application method: The Permittee shall maintain records documenting the transfer EQUI 7 19650 efficiency of each coating application method used in EQUI 7. [Minn. R. 7007.0800, subps. 4-5] EQUI 8 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 8 3690 7011.0715, subp. 1(A)] EQUI 9 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 9 3690 7011.0715, subp. 1(A)] Opacity <= 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. EQUI 10 3450 [Minn. R. 7011.0610, subp. 1(A)(2)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 10 3460 7011.0610, subp. 1(A)(1)] EQUI 10 3512 Fuel type: Natural gas only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 10 3517 The Permittee shall keep records of fuel purchases showing fuel types. [Minn. R. 7007.0800, subp. 5] SI Id Sequence Requirement Opacity <= 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. EQUI 11 3450 [Minn. R. 7011.0610, subp. 1(A)(2)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 11 3460 7011.0610, subp. 1(A)(1)] EQUI 11 3512 Fuel type: Natural gas only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 11 3517 The Permittee shall keep records of fuel purchases showing fuel types. [Minn. R. 7007.0800, subp. 5] EQUI 12 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 12 3690 7011.0715, subp. 1(A)] The Permittee shall vent emissions from EQUI 12 to control equipment meeting the requirements of TREA 11 whenever EQUI 12 operates. [Minn. R. 7011.0075, subp. 1, Title I Condition: Avoid major source under 40 CFR EQUI 12 19660 52.21(b)(1)(i) and Minn. R. 7007.3000] Opacity <= 20 percent opacity except for one six-minute period per hour of not more than 60 percent opacity. EQUI 13 3450 [Minn. R. 7011.0610, subp. 1(A)(2)] Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. EQUI 13 3460 7011.0610, subp. 1(A)(1)] EQUI 13 3512 Fuel type: Natural gas only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 13 3517 The Permittee shall keep records of fuel purchases showing fuel types. [Minn. R. 7007.0800, subp. 5] The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 85 percent control efficiency. [CAAA of 1990, Title I Condition: Avoid major source TREA 4 16440 under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 85 percent control efficiency. [CAAA of 1990, Title I Condition: Avoid major source under TREA 4 16445 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 85 percent control efficiency. [CAAA of 1990, Title I Condition: Avoid major source under TREA 4 16450 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall vent emissions from EQUI 7 to TREA 4 whenever EQUI 7 operates, and operate and maintain TREA 4 at all times that any emissions are vented to TREA 4. The Permittee shall document periods of non- operation of the control equipment TREA 4 whenever EQUI 7 is operating. [CAAA of 1990, Title I Condition: TREA 4 16460 Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] If the Permittee replaces TREA 4, the replacement control must meet or exceed the control efficiency requirements of TREA 4 as well as comply with all other requirements of TREA 4, COMG 4, and COMG 5. Prior to making such a change, the Permittee shall apply for and obtain the appropriate permit amendment, as applicable.

If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR-05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [CAAA of 1990, Title I Condition: Avoid major source under 40 CFR TREA 4 16461 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall meet the monitoring and recordkeeping requirements of COMG 4. [Minn. R. 7007.0800, TREA 4 17290 subp. 14, Minn. R. 7007.0800, subp. 2] The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 68 percent control efficiency. [Minn. R. 7011.0070, subp. 1(A), Title I Condition: Avoid TREA 11 80 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 68 percent control efficiency. [Minn. R. 7011.0070, subp. 1(A), Title I Condition: Avoid TREA 11 90 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] SI Id Sequence Requirement The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 68 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR TREA 11 100 52.21(b)(1)(i) and Minn. R. 7007.3000]

The Permittee shall vent emissions from EQUI 12 to TREA 11 whenever EQUI 12 operates, and operate and maintain TREA 11 at all times that any emissions are vented to TREA 11. The Permittee shall document periods of non-operation of the control equipment TREA 11 whenever EQUI 12 is operating. [Title I Condition: Avoid TREA 11 16440 major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

If the Permittee replaces TREA 11, the replacement control must meet or exceed the control efficiency requirements of TREA 11 as well as comply with all other requirements of TREA 11. Prior to making such a change, the Permiee shall apply for and obtain the appropriate permit amendment, as applicable.

As required by 40 CFR Section 64.9(a)(2), for the Semi-Annual Deviations Report required by this permit and/or the Notification of Deviations Endangering Human Health and the Environment required by this permit, as applicable, the Permittee shall include the following related to the monitoring identified as required by 40 CFR pt. 64: 1) Summary information on the number, duration, and cause of excursions or exceedances, as applicable, and the corrective action taken; and 2) Summary information on the number, duration, and cause TREA 11 16460 for monitor downtime incidents. [40 CFR 64.9(a)(2), Minn. R. 7017.0200]

The Permittee shall maintain records of monitoring data, monitor performance data, corrective actions taken, and other supporting information required to be maintained. The Permittee may maintain records on alternative media, such as microfilm, computer files, magnetic tape disks, or microfiche, provided that the use of such alternative media allows for expeditious inspection and review, and does not conflict with other TREA 11 16470 applicable recordkeeping requirements. [40 CFR 64.9(b), Minn. R. 7017.0200] The Permittee shall operate and maintain the water curtain in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA TREA 11 17310 staff. [Minn. R. 7007.0800, subp. 14]

Daily Inspections: At least once per 24-hour period, the Permittee shall visually inspect the condition of the water curtain with respect to spray nozzles for proper operation (no clogged nozzles), the water level being maintained to adequately filter exhaust air according to manufacturer specifications, water recirculating according to manufacturer specifications, the water curtain having continuous liquid flow across the booth wall, potential water leaks from any part of the curtain, and any other matter that may affect the water curtain's performance. The Permittee shall record the time and date of each inspection and any actions resulting from the inspection. [40 CFR 64.3, 40 CFR 64.9(b), Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 TREA 11 17340 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Periodic Inspections: The Permittee shall inspect the control equipment components as required by the manufacturing specifications. The Permittee shall maintain a written record of these inspections. [40 CFR 64.3, TREA 11 17360 Minn. R. 7017.0200] SI Id Sequence Requirement Corrective Actions: The Permittee shall take corrective action as soon as possible if the water curtain or any of its components are found during the inspections to need repair. This shall include, but is not limited to, the following: clogged spray nozzles, the water level falling below manufacturer specifications to adequately filter exhaust air, the water curtain not continuously flowing across the booth wall, and water leaks from any part of the curtain.

Hood Certification and Evaluation: The Permittee shall maintain the most current record of the hood evaluation and certification on site. The control device hood must be evaluated by a testing company as specified in Minn. R. 7011.0072, subp. 2(A) and must conform to the design and operating requirements listed in Minn. R. 7011.0072, subps. 2(B) and 3. The hood certification must address how cross-drafts are accommodated in the design (e.g., higher face velocity, oversized hood, etc.) and the Permittee shall certify this as specified in Minn. R. 7011.0072, subps. 2 and 3. [Minn. R. 7007.0800, subp. 2(A), Title I Condition: Avoid major source under 40 TREA 11 17400 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

Annual Hood Evaluation: The Permittee shall measure and record at least once every 12 months the fan rotation speed, fan power draw, or face velocity of each hood, or other comparable air flow parameter that was measured during the most recent hood certification to verify the hood design and operation parameters meet or exceed the parameters measured during the most recent hood evaluation conducted according to Minn. R. 7011.0072, subps. 2 & 3 as required by Minn. R. 7011.0072, subp. 4. The Permittee shall maintain a copy of the annual evaluations on site for 5 years. [Minn. R. 7007.0800, subp. 2(A), Title I Condition: Avoid major source TREA 11 17410 under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000] Attachment 3 – Points Calculator

Points Calculator

1) AI ID No.: 26591 Total Points 35 2) Facility Name: Central Sandblasting Company 3) Small business? y/n? n 4) Air Project Tracking Numbers (including all 6688 5) Date of each Application Received: 6/3/2020 6) Final Permit No. 12300755-102 7) Permit Staff Jesse Loi Total Total Application Type Air Project Tracking No. Tempo Activity ID Qty. Points Points Additionl Cost Details Administrative Amendment 1 0 $ -

Minor Amendment 4 0 $ - Applicability Request 10 0 $ - Moderate Amendment 15 0 $ - Major Amendment 6688 IND20200001 1 25 25 $ 7,125.00 Individual State Permit (not reissuance) 50 0 $ - Individual Part 70 Permit (not reissuance) 75 0 $ -

Additional Points Modeling Review 15 0 $ - BACT Review 15 0 $ - LAER Review 15 0 $ - CAA section 110(a)(2)(D)(i)(I) Review (i.e., 10 0 $ - Transport Rule/CAIR/CSAPR) Part 75 CEM analysis 10 0 $ - NSPS Review 10 0 $ - NESHAP Review 6688 IND20200001 1 10 10 $ 2,850.00 MMMM Case-by-case MACT Review 20 0 $ - Netting 10 0 $ - Limits to remain below threshold 10 0 $ - Plantwide Applicability Limit (PAL) 20 0 $ - AERA review 15 0 $ - Variance request under 7000.7000 35 0 $ - Confidentiality request under 7000.1300 2 0 $ - EAW review 0 Part 4410.4300, subparts 18, item A; and 29 15 0 $ - Part 4410.4300, subparts 8, items A & B; 10, items A to C; 35 0 $ - 16, items A & D; 17, items A to C & E to G; and 18, items B & C Part 4410.4300, subparts 4; 5 items A & B; 13; 15; 16, 70 0 $ - items B & C; and 17 item D Add'l Points 10

NOTES: Points are charged for the addition of EQUI 9 and EQUI 12 spray booths as new units subject to NESHAP MMMM, even though the standard considers the entire facility subject rather than by unit. No points charged for existing COMG 2 PreCap limits to avoid PSD as they were not modified.

(DQ Points)