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Draft Air Quality Permit 7239 - U.S. Immigration and Customs Enforcement

Friday, April 12, 2019


Draft Air Quality Permit 7239, U.S. Immigration and Customs Enforcement, Construction and operation of a 2,000 kWe natural gas-fired emergency generator set, 500 12th Street SW

Notice is hereby given that, pursuant to 20 DCMR §210, the Air Quality Division (AQD) of the Department of Energy and Environment (DOEE), located at 1200 First Street NE, 5th Floor, Washington, DC, intends to issue a permit (No. 7239) to U.S. Immigration and Customs Enforcement to operate one Cummins 2,000 kWe natural gas-fired emergency generator set with a 2,826 bhp engine located at 500 12th Street SW, Washington DC 20536.  The contact person for the facility is Thomas Brokaw, Unit Chief, NCR Facilities, phone number: (202) 425-7207. 

Emergency Generator to be Permitted

Equipment Location 


Generator (Engine) Size


Serial No.

Permit No.


500 12th Street SW
Washington DC

2,000 kWe (2,826 hp)



The proposed emission limits are as follows:

a.   Emissions from this unit shall not exceed those in the following table [40 CFR 60.4233(e) and Subpart JJJJ, Table 1]:

Pollutant Emission Limits1


ppmvd at 15% O2













1The Permittee may choose to comply with the emission standards in this table in units of either g/HP-hr or ppmvd at 15 percent O2.

2For purposes of this requirement, when calculating emissions of VOCs, emissions of formaldehyde should not be included.

b.   Visible emissions shall not be emitted into the outdoor atmosphere from this generator, except that discharges not exceeding forty percent (40%) opacity (unaveraged) shall be permitted for two (2) minutes in any sixty (60) minute period and for an aggregate of twelve (12) minutes in any twenty-four hour (24 hr.) period during start-up, cleaning, adjustment of combustion controls, or malfunction of the equipment [20 DCMR 606.1].

c.   An emission into the atmosphere of odorous or other air pollutants from any source in any quantity and of any characteristic, and duration which is, or is likely to be injurious to the public health or welfare, or which interferes with the reasonable enjoyment of life or property is prohibited. [20 DCMR 903.1]

The estimated maximum emissions from the emergency generator engine are as follows:


Maximum Annual Emissions (tons/yr)

Carbon Monoxide (CO)


Oxides of Nitrogen (NOx)


Total Particulate Matter (PM Total)


Volatile Organic Compounds (VOCs)


Sulfur Dioxide (SOx)


The application to operate the generator engine and the draft permit and supporting documents are available for public inspection at AQD and copies may be made available between the hours of 8:15 A.M. and 4:45 P.M. Monday through Friday. Interested parties wishing to view these documents should provide their names, addresses, telephone numbers and affiliation, if any, to Stephen S. Ours at (202) 535-1747.

Interested persons may submit written comments or may request a hearing on this subject within 30 days of publication of this notice. The written comments must also include the person’s name, telephone number, affiliation, if any, mailing address and a statement outlining the air quality issues in dispute and any facts underscoring those air quality issues. All relevant comments will be considered before taking final action on the permit application.


Comments on the proposed permit and any request for a public hearing should be addressed to:


Stephen S. Ours    
Chief, Permitting Branch - Air Quality Division

Department of Energy and Environment
1200 First Street NE, 5th Floor

Washington DC 20002

[email protected]


No comments or hearing requests submitted after May 13, 2019 will be accepted.

For more information, please contact Stephen S. Ours at (202) 535-1747.