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Notice of Public Comment Period - Draft Air Quality Permit 6264-R2 - Army Corps of Engineers

Friday, May 31, 2019


  Draft Air Quality Permit 6264-R2, U.S. Army Corps of Engineers, Baltimore District, Washington Aqueduct, Operation of an existing 125 kWe diesel-fired emergency generator set at the Dalecarlia Water Treatment Plant, 5900 MacArthur Blvd NW

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 an air quality permit (No. 6264-R2) to the U.S. Army Corps of Engineers, Baltimore District, Washington Aqueduct, to operate one 125 kWe SDMO Industries emergency generator set, powered by a 186 bhp diesel-fired engine, located at the Dalecarlia Water Treatment Plant, 5900 MacArthur Boulevard NW, Washington DC.  The contact person for the facility is Shabir Choudhary, Section Chief, WEE Section, phone number: (202) 764-2771. 

Emergency Generator to be Permitted

Equipment Location


Generator (Engine) Size

Generator Model Number

Engine Serial Number

Permit No.

Dalecarlia WTP

(Admin Building)

5900 MacArthur Boulevard, NW, Washington,  DC 20016

125 kWe (186 hp)




The proposed emission limits are as follows:

a.   Visible emissions shall not be emitted into the outdoor atmosphere from this generator set, 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].

b.     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 annual emissions from the emergency generator set are as follows:


Maximum Annual Emissions (tons/yr)

Carbon Monoxide (CO)


Oxides of Nitrogen (NOx)


Total Particulate Matter (PM Total)


Volatile Organic Compounds (VOCs)


Oxides of Sulfur (SOx)


The application to operate the generator set 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 in issuing the final permit.


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
, DC 20002

[email protected]


No comments or hearing requests submitted after July 1, 2019 will be accepted.


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