Project Coversheet

User InputsMPCA InputReserved Optional (yellow) (peach) (gray) (blue) MPCA Document: MPCA Standardized Air Modeling (SAM) Spreadsheet [version 09097] Submittal Date: Apr. 15, 2009 Facility Name: Marathon Petroleum Company LLC - St. Paul Park Refinery Facility Address: 301 St. Paul Park Road City,County,State: St. Paul Park, Washington county, MN Project Title: MPC Boiler Replacement Project Preparer (Name): Preparer (Company

): Preparer (Phone): Preparer (Email): Reviewer (Name): Melissa Sheffer Reviewer (Company

): Minnesota Pollution Control Agency Reviewer (Phone): 651-757-2718 Reviewer (Email): Melissa.Sheffer@pca.state.mn.us Project Description (50 words or less):

General Site Information: User InputsExamples: Facility Id Number (8-digit Id; zero if unassigned): "00000000" Proposed Facility

Abbreviation Code (3 character FAC Id; $$$=Placeholder): "TRY" Standardized Air Modeling (SAM) Stage Number (N) and Revision Number (.n): SAM-N.n Supplemental Spreadsheets -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did use the Standardized Mobile Source spreadsheet (SMSnnnnn.xls) [road/tailpile emis.]: I will/did use the Standardized Data Visualization spreadsheet (SDVnnnnn.xls) [pictures/images]: SAM Learning Curve -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did read SAM Stage 0 (SMS Readme): I will/did read SAM Stage 0 (SMS Instructions): I will/did read SAM Stage 0 (SMS Guidance): I will/did read SAM Stage 0 (SMS Coordinates): I will/did read SAM Stage 0 (SMS Source Ids): I will/did read SAM Stage 0 (SMS Facility Abbreviation Codes [FAC]): I will/did read SAM Stage 0 (Miscellaneous Sources - Primer): I will/did read SAM Stage 0 (Directory of Files - Primer): I will/did read SAM Stage 0 (MPCA FAR Data): I will/did read SAM Stage 0 (SAM Bacground Values): SMS Learning Curve -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did read SMS Stage 0 (Paved Roads - Primer): I will/did read SMS Stage 0 (Paved Areas - Primer): I will/did read SMS Stage 0 (Unpaved Roads - Primer): I will/did read SMS Stage 0 (Unpaved Areas - Primer): I will/did read SMS Stage 0 (MnROAD Aggregate Profile): I will/did read SMS Stage 3 (Paved Roads - Stage 3 Guide): I will/did read SMS Stage 3 (UNPVD Roads - Stage 3 Guide): Submittal Purpose (Applicability ) -- Answer with Yes, No, or NA (not applicable) User Inputs OK? Air Emission Risk Analysis (AERA): Environmental Assessment Worksheet (EAW): Environmental Impact Statement (EIS): Prevention of Significant Deterioration (PSD) Permit: State Implementation Plan (SIP) Revision: State Sy nthetic-Minor Permit: State Title V (Part 70) Permit: Other (eg. Capped Permits, Special Studies, Net Impact Changes < SIL Values):

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PSD Increment (Applicability ) -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did contact MPCA regarding PSD minor source baseline dates: The PSD minor source baseline date has been triggered in this county for NOX: The PSD minor source baseline date has been triggered in this county for SO2: The PSD minor source baseline date has been triggered in this county for PM10: Dispersion Models -- Version number or NA (not applicable) User Inputs OK? AERMOD Version (e.g. 07026): AERMAP Version (e.g. 09040): AERMET Version (e.g. 06341): AERSURFACE Version (e.g. 08009): BPIP-PRIME Version (e.g. 04274): CALPUFF Version (e.g. xxxxx): RASS Version (e.g. xxxxx): VISCREEN Version (e.g. xxxxx): Other (explain): Check http://www.dnr.state.mn.us/maps/landview.html for these items: User Inputs OK? Project site approximate UTM Easting Coordinates (meters, NAD83, zone 15 extended): Project site approximate UTM Northing Coordinates (meters, NAD83, zone 15 extended): Meteorology

-- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did use the latest version of MPCA pre-processed meteorological data: If yes, enter the MPCA ZIP Filename Prefix (e.g., RS440925): If no, explain (e.g. AERSCREEN; onsite meteorological data). Background (BKG) -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did exclude FAR Sources* but add conservative BKG values: I will/did include FAR Sources* and add MPCA FAR BKG values: * First-Approximation Run (FAR) sources Future Growth (FG) -- Answer with Yes, No, or NA (not applicable) User Inputs OK? NAAQS&MAAQS analyses will retain FG of at least 10 percent: The PSD increment analyses will retain FG of at least 10 percent: NAAQS&MAAQS analyses will retain FG of at least 25 percent: The PSD increment analyses will retain FG of at least 25 percent: See "Permit Language Regarding Re-modeling Decision Table" (page 7) The visibility

analyses will retain some FG: Ambient Air -- Answer with Yes, No, or NA (not applicable) User Inputs OK? I will/did assume fencing for some on-site property: I will/did assume fencing for some nearby facilities: I will/did include flagpole receptors within 2 miles: I will/did follow MPCA Guidance for Ambient Receptors (Summary ) below MPCA Guidance for Ambient Receptors (Summary): Facility Fence Line(s) = 10 meter spacing (all modeling) Facility Property Line(s) = 25 meter spacing (all modeling) Facility Unfenced Areas = 25 meter spacing (PSD, SIP, and campus-like facility Title V modeling) Offsite Areas = 100m spacing out to 2km (Title V and MERCE/cumulative potential effects modeling). Offsite Areas = 100m spacing out to 2km; 500m spacing for 2-5km; 5000m spacing for 5-50km (PSD). Offsite Areas = 100m spacing out to 2km; 500m spacing for 2-5km; 5000m spacing for 5-50km (SIP). Public Roadway Ambient Air Exclusion Areas: within 5m to 15m from edge of nearest traffic lane: 5m for low ADT (<500 ADT); 10m for medium ADT (500-3000 ADT); 15m for high ADT (>3000 ADT). (Reference: PSD ambient monitoring siting criteria for TSP & PM10 and Average Daily Traffic [ADT]) Remaining Future Growth Levels (High, Med., Low, and No/None) based on Percent-of-Standard Criteria: "NA" if not applicable. "Pending" if pending or incomplete. High Growth if user followed MPCA modeling guidance and predicted impacts in percent of standard < 75% Med. Growth if user followed MPCA modeling guidance and predicted impacts in percent of standard≥75% Low Growth if user followed MPCA modeling guidance and predicted impacts in percent of standard≥ 90% No Growth if user ignored MPCA modeling guidance or if predicted impacts in percent of standard≥ 100% See "Permit Language Regarding Re-modeling Decision Table" on page 7 of this worksheet.

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Summary Report for Significant Impact Level (SIL) Modeling -- Class II Areas Did the user satisfactorily follow MPCA modeling guidance? N/A SIL Values (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO 2,000 - 500 - - - NOX - - - - 1.0 - PM2.5 (option 3) - - - 1.2 0.3 - PM10 - - - 5.0 1.0 - SO2 25.0 25.0 - 5.0 1.0 - SO2 (Northern MN) - 25.0 - - - - Other Predicted Impacts (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO - - - - NOX - - - - - PM2.5 - - - - PM10 - - - - SO2 - - SO2 (Northern MN) - - - - - Other Percent of SIL Values: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO - - - - NOX - - - - - PM2.5 - - - - PM10 - - - - SO2 - - SO2 (Northern MN) - - - - - Other Do refined modeling: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO - - - - NOX - - - - - PM2.5 - - - - PM10 - - - - SO2 - - SO2 (Northern MN) - - - - - Other Summary Report for Significant Impact Area (SIA) Distances -- Class II Areas SIA Distances (meters): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO - - - - NOX - - - - - PM2.5 - - - - PM10 - - - - SO2 - - SO2 (Northern MN) - - - - - Other

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Summary Report for NAAQS/MAAQS Modeling and Remaining Future Growth Did the user satisfactorily follow MPCA modeling guidance? Yes Minnesota Ambient Air Quality Standards (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO 35,000 - 10,000 - - - NOX - - - - 100 - PM2.5 - - - 35 15 - PM10 - - - 150 50 - SO2 1,300 1,300 - 365 60 - SO2 (Northern MN) - 915 - - - - Pb 0.15 Other Predicted Impacts excluding Monitored Background Concentrations (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO NA - NA - - - NOX - - - - NA - PM2.5 - - - NA NA - PM10 - - - NA NA - SO2 1,127.5 619.7 - 272.8 55.1 - SO2 (Northern MN) - NA - - - - Pb NA Other Monitored Background Concentrations (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO - - - - NOX - - - - - PM2.5 - - - - PM10 - - - - SO2 56.0 34.0 - 17.0 4.0 - SO2 (Northern MN) - - - - - Pb Other Predicted Impacts including Monitored Background Concentrations (μg/m3): Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO NA - NA - - - NOX - - - - NA - PM2.5 - - - NA NA - PM10 - - - NA NA - SO2 1183.5 653.7 - 289.8 59.1 - SO2 (Northern MN) - NA - - - - Pb Other Percent of Standard: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other CO NA - NA - - - NOX - - - - NA - PM2.5 - - - NA NA - PM10 - - - NA NA - SO2 91% 50% - 79% 98% - SO2 (Northern MN) - NA - - - - Pb Other Remaing Future Growth based on Percentage of Standard: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other Lowest Growth CO NA - NA - - - NOX - - - - NA - PM2.5 - - - NA NA - PM10 - - - NA NA - SO2 Low GrowthHigh Growth - Med. GrowthLow Growth - Low Growth SO2 (Northern MN) - NA - - - - Pb Other

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Summary Report for PSD Class II Increment Modeling and Remaining Future Growth Did the user satisfactorily follow MPCA modeling guidance? N/A PSD Class II Increment Ceilings (μg/m3): Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - 25 - SO2 512 512 - 91 20 - PM10 - - - 30 17 - PM2.5 (option 1) - - - 9 4 -

Predicted Impacts for PSD Class II Increments (μg/m3): Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

Percent of Standard: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

Remaining Future Growth based on Percentage of Standard: Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other Lowest Growth NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

PM2.5 Class II Increment values as of date have not been placed by the EPA

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Summary Report for PSD Class I Increment Modeling and Remaining Future Growth Did the user satisfactorily follow MPCA modeling guidance? N/A PSD Class I Increment Ceilings (μg/m3): Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - 2.5 - SO2 25 25 - 5 2 - PM10 - - - 8 4 - PM2.5 (option 1) - - - 2 1 -

Predicted Impacts for PSD Class I Increments (μg/m3): Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

Percent of Standard: Criteria Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

Remaining Future Growth based on Percentage of Standard: Increment Pollutants 1-Hour 3-Hour 8-Hour 24-Hour Annual Other Lowest Growth NOX - - - - - SO2 - - PM10 - - - - PM2.5 - - - -

PM2.5 Class I Increment values as of date have not been placed by the EPA

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Reserved for MPCA Use -- Summary Report for Permit Re-modeling Clauses Did the user satisfactorily follow MPCA modeling guidance? Permit Language Regarding Re-modeling Decision Table

PSD Low GrowthMed. GrowthHigh Growth No Limits 100% - 90%90% - 75% < 75% No Permit AmendmentSubmittal at reissuanceDoes not

trigger modeling *Does not

trigger modeling Minor SubmittalDoes not trigger modeling *Does not

trigger modeling Major / Moderate SubmittalSubmittalDoes not trigger modeling PSD Low GrowthMed. GrowthHigh Growth Limits 100% - 90%90% - 75% < 75% No Permit AmendmentSubmittalDoes not trigger modeling *Does not

trigger modeling Minor SubmittalDoes not trigger modeling *Does not

trigger modeling Major / Moderate SubmittalSubmittalDoes not trigger modeling Non-PSD Low GrowthMed. GrowthHigh Growth Limits 100% - 90%90% - 75% < 75% No Limits No Permit AmendmentSubmittal at reissuance*Does not

trigger modeling *Does not

trigger modeling Does not

trigger modeling Minor Submittal*Does not trigger modeling *Does not

trigger modeling Does not

trigger modeling Major / Moderate Submittal*Submittal*Does not trigger modeling Does not

trigger modeling Some things to consider in deciding on when to re-evaluate and/or when to submit and/or require MPCA approval: -- How likely

the facility

is to make modifications that would increase the PTE of the pollutant(s) that was/were modeled; -- Does the facility

make routine changes to units/sources that have low emissions but poor dispersion (e.g., heat recovery, fugitives); -- Was the modeled required by a rule or was the decision to complete it based on policy or some case-by-case decision; -- How well do the operating assumptions used in the modeling resembling how the facility actually operates; Any permit team recommendation on this issue shall be documented in the permit technical support document and shall include a discussion of the above factors. * The default level of modeling is as stated; however, individual permit teams may -- Does the permit already prohibit the facility

from increasing -- Does the facility

have a wide range of letter grades for one pollutant.

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Reserved for MPCA Use -- Summary Report of Submittal Dates by Stage Number (N) and Submittal Number (.n) SAM Stage Number (N)Submittal1Submittal2Submittal3Submittal4Submittal5Submittal6Approved SAM Stage 0 1/1/2009? SAM Stage 1 SAM Stage 2 SAM Stage 3 SAM Stage 4 SAM Stage 5 SAM Stage 6 SAM Stage 7 SMS Stage Number (N)Submittal1Submittal2Submittal3Submittal4Submittal5Submittal6Approved SMS Stage 0 SMS Stage 1 SMS Stage 2 SMS Stage 3 SMS Stage 4 SMS Stage 5 SMS Stage 6 SMS Stage 7 Picture Spreadsheets Submittal1Submittal2Submittal3Submittal4Submittal5Submittal6Approved SDVnnnnn.xls or MY_PIX1.xls MY_PIX2.xls MY_PIX3.xls MY_PIXn.xls Reserved for MPCA Use -- Summary Report of Key Communications (correspondance, discussions, etc.) Summary of key communications between MPCA, Company, Consultant, EPA, FLM, Tribes, etc.

Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Date Topic Links to Old Permits (e.g., IBM-Rochester below): http://www.pca.state.mn.us/air/permits/issued/10900006-008-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-007-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-006-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-005-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-004-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-003-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-002-aqpermit.pdf http://www.pca.state.mn.us/air/permits/issued/10900006-001-aqpermit.pdf Reserved for MPCA Use -- MPCA Recommendations: Issue permit with appendix of modeling parameters used. Issue permit with additional modeling conditionals (list): Revise permit application (explain): Return permit application (explain):

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