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Proposed Air Quality Permit 6806 – United States Postal Service Headquarters

PUBLIC NOTICE

Proposed Air Quality Permit 6806 – United States Postal Service Headquarters – L’Enfant Plaza, One existing 750 kW diesel fired emergency generator set at 475 L’Enfant Plaza SW

Notice is hereby given that, pursuant to 40 C.F.R. Part 51.161, and D.C. Official Code §2-505, the Air Quality Division (AQD) of the District Department of the Environment (DDOE), located at 1200 First Street NE, 5th Floor, Washington, DC, intends to issue air quality permit #6806 to operate one (1) 750 kW diesel-fired emergency generator set at the United States Postal Service Headquarters – L’Enfant Plaza property located at 475 L’Enfant Plaza Southwest, Washington DC 20260. The contact person for the facility is Stephen Hurley, Manager, Facility Services, at (202) 268-2092.

The proposed emission limits are as follows:

a.   Visible emissions shall not be emitted into the outdoor atmosphere from the 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]

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 emissions from the Emergency Generator are as follows:

Pollutant

Maximum Annual Emissions (tons/yr)

Carbon Monoxide (CO)

2.07

Oxides of Nitrogen (NOx)

6.50

Total Particulate Matter , PM (Total)

0.19

Sulfur Dioxide (SOx)

1.00

Volatile Organic Compounds (VOCs)

0.17

The permit application and supporting documentation, along with the draft permit 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 public 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

District Department of the Environment
1200 First Street NE, 5th Floor
Washington, DC 20002

Stephen.Ours@dc.gov

No written comments or hearing requests postmarked after January 6, 2014 will be accepted.

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