Title 7 DNREC 

1100 Air Quality Management Section 

1142 Specific Emission Control Requirements 

11/11/2009 

2.0 Control of NOx Emissions from Industrial Boilers and Process Heaters at 

Petroleum Refineries 

2.1 Purpose 

The purpose of Section 2.0 of this regulation is to reduce NOx emissions from 

Delaware's large industrial boilers and process heaters that are located at petroleum 

refineries. 

Under the 8-hour ozone national ambient air quality standard (NMOS), the 

state of Delaware is part of the Philadelphia-Wilmington-Atlantic City, PA-DE-MD-NJ 

moderate non-attainment area (NM). The entire NM, including Delaware, is 

required by the Clean Air Act (CM) to attain the 8-hour ozone NMOS by 2010. After 

attainment, the area must maintain compliance with the NMOS. By implementing 

Section 2.0 of this regulation, NOx emission reductions from the affected boilers and 

heaters shall contribute to (1) attainment and maintenance of the 8-hour ozone 

standard, and (2) improvement of the ambient air quality, in both Delaware and the 

entire NM. 

Additionally, New Castle County of Delaware is a part of the PhiladelphiaWilmington-Camden, PA-DE-NJ NM for the annual fine particulate matter (PM2.5) 

NMOS, and is required by the CM to attain the NMOS by 2010. Since NOx is a 

significant precursor to PM2.5 formation, reducing NOx emissions will also assist in 

attainment and maintenance of the PM2.5 standard. 

2.2 Applicability and Compliance Dates 

2.2.1 Section 2.0 of this regulation applies to any industrial boiler or process 

heater with a maximum heat input capacity of equal to or greater than 200 

million BTUs per hour (mmBTUlHour) (except for any Fluid Catalytic Cracking 

Unit carbon monoxide (CO) boiler), which is operated or permitted to operate 

within a petroleum refinery facility on the effective date of this section. This 

comprises the following nine (9) units at the Delaware City refinery: 

2.2.1.1 Crude Unit Vacuum Heater (Unit 21-H-2); 

2.2.1.2 Crude Unit Atmospheric Heater (Unit 21-H-701); 

2.2.1.3 Fluid Coking Unit Carbon Monoxide boiler (Unit 22-H-3); 

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2.2.1.4 Steam Methane Reformer Heater (Unit 37 -H-1 ); 

2.2.1.5 Continuous Catalyst Regenerator Reformer Heater (Unit 42-H1,2,3); 

2.2.1.6 Boiler 1 (Unit 80-1); 

2.2.1.7 Boiler 2 (Unit 80-2); 

2.2.1.8 Boiler 3 (Unit 80-3); 

2.2.1.9 Boiler 4 (Unit 80-4). 

2.2.2 The requirements of Section 2.0 of this regulation are in addition to all 

other state and federal requirements. 

2.2.3 The following units shall be in compliance with the requirements of 

Section 2.0 of this regulation on and after July 11, 2007: Crude Unit 

Atmospheric Heater (Unit 21-H-701), Steam Methane Reformer Heater (Unit 

37 -H-1) and Boiler 2 (Unit 80-2). 

2.2.4 The following units shall be in compliance with the requirements of 

Section 2.0 of this regulation as soon as practicable, but not later than: 

2.2.4.1 December 31, 2008: Boiler 1 (Unit 80-1) and Crude Unit 

vacuum Heater (Unit 21-H-2). 

2.2.4.2 May 1, 2011: Boiler 3 (Unit 80-3) and Boiler 4 (Unit 80-4). 

2.2.4.3 December 31, 2012: Continuous Catalyst Regenerator 

Reformer Heater (Unit 42-H-1, 2, 3). 

2.3 Standards. 

The owner or operator of any industrial boiler or process heater identified in 

Section 2.2.1 of this regulation shall meet the applicable NOx emission limitation 

identified in the following sections: 

2.3.1 For the Fluid Coking Unit Carbon Monoxide boiler (Unit 22-H-3), 

Reserved. 

2.3.2 For the Steam Methane Reformer (SMR) Heater (Unit 37-H-1), 

Reserved. 

2.3.3 For Boiler 1 (Unit 80-1), Boiler 3 (Unit 80-3) and Boiler 4 (Unit 80-4), 

0.015Ib/mmBTU, on a 24-hour rolling average basis. 

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2.3.4 For any unit not covered by 2.3.1, 2.3.2, or 2.3.3, 0.04 Ib/mmBTU, on 

a 24-hour rolling average basis. 

2.3.5. The standards set out in 2.3 of this regulation shall not apply to the 

start-up and shutdown of equipment when emissions from such equipment 

during a start-up and shutdown are addressed in an operation permit issued 

pursuant to the provisions of §2 of Regulation 1102. 

2.4 Monitoring Requirements. Compliance with the NOx emission standards 

specified in 2.3.1, 2.3.2, and 2.3.4 of this regulation shall be determined based on 

CEM data collected in accordance with the appropriate requirements set forth in 40 

CFR, Part 60, Appendix B, Performance Specification 2, and the QA/QC 

requirements in 40 CFR Part 60, Appendix F. 

2.5 Recordkeeping and Reporting Requirements 

2.5.1 Not later than 180 days after the effective date of Section 2.0 of this 

regulation, any person subject to Section 2.0 of this regulation shall develop, 

and submit to the Department, a schedule for bringing the affected emission 

unites). identified in Section 2.2.4, into compliance with the requirements of 

Section 2.3 of this regulation. Such schedule shall include, at a minimum, all of 

the following: 

2.5.1.1 The method by which compliance will be achieved. 

2.5.1.2 The dates by which the affected person plans to complete the 

following major increments of progress, as applicable: 

2.5.1.2.1 Completion of engineering; 

2.5.1.2.2 Submission of permit applications; 

2.5.1.2.3 Awarding of contracts for construction and/or 

installation; 

2.5.1.2.4 Initiation of construction; 

2.5.1.2.5 Completion of construction; 

2.5.1.2.6 Commencement of trial operation; 

2.5.1.2.7 Initial compliance testing; 

2.5.1.2.8 Submission of compliance testing reports; 

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2.5.1.2.9 Commencement of normal operations (in full 

compliance). 

2.5.2 Any person subject to Section 2.0 of this regulation shall submit to the 

Department an initial compliance certification by September 10, 2007 for units 

identified in Section 2.2.3 of this regulation and, for units identified in Section 

2.2.4, by the compliance date specified in Section 2.2.4. The initial compliance 

certification shall include, at a minimum, all of the following information: 

2.5.2.1 The name and the location of the facility; 

2.5.2.2 The name, address and telephone number of the person 

responsible for the facility; 

2.5.2.3 Identification of the subject source(s); 

2.5.2.4 The applicable standard; 

2.5.2.5 The method of compliance; 

2.5.2.6 Certification that each subject source is in compliance with the 

applicable standard. 

2.5.3 Any person subject to Section 2.0 of this regulation shall, for each 

occurrence of excess emissions above the standards of Section 2.3 of this 

regulation, within thirty (30) calendar days of becoming aware of such 

occurrence, supply the Department with the following information: 

2.5.3.1 The name and location of the facility; 

2.5.3.2 The subject source(s) that caused the excess emissions; 

2.5.3.3 The time and date of first observation of the excess emissions; 

2.5.3.4 The cause and expected duration of the excess emissions; 

2.5.3.5 The estimated rate of emissions (expressed in the units of the 

applicable emission limitation) and the operating data and calculations 

used in determining the magnitude of the excess emissions; 

2.5.3.6 The proposed corrective actions and schedule to correct the 

conditions causing the excess emissions. 

2.5.4 Any person subject to Section 2.0 of this regulation shall maintain all 

information necessary to determine and demonstrate compliance with the 

requirements of this section for a minimum period of five (5) years. Such 

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information shall be immediately made available to the Department upon 

verbal and written request. 

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