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Proposed Air Quality Permit 6973 - Arnold & Porter LLP

Friday, April 17, 2015

PUBLIC NOTICE

Proposed Air Quality Permit 6973, Arnold & Porter LLP, One 250 kWe natural gas fired emergency generator set at 601 Massachusetts Avenue NW

Notice is hereby given that, pursuant to 40 C.F.R. Part 51.161, D.C. Official Code §2-505, and 20 DCMR §210, 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 Permit #6973 to Arnold & Porter LLP to operate one Generac 250 kWe natural gas-fired emergency generator set with a 379.1 bhp natural gas-fired engine, located at 1601 Massachusetts Avenue NW, Washington, DC. The contact person for the facility is Thomas Alburtus at (213) 792-9151.

Emergency Generator to be Permitted

Equipment Location  Address

Generator (Engine) Size

Engine Serial Number

Permit No.

601 Massachusetts Ave. NW
Washington, DC 20002

250 kWe (379.1 bhp)

G914B004476

6973

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 Limits (g/HP-hr)

NOx

CO

VOC

2.0

4.0

1.0

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 annual emissions from the generator engine (assuming 500 hours per year of operation) are as follows:

Pollutant

Maximum Annual Emissions (tons/yr)

Carbon Monoxide (CO)

0.1109

Oxides of Nitrogen (NOx)

0.00627

Total Particulate Matter , PM (Total)

0.00656

Volatile Organic Compounds (VOCs)

0.0796

Sulfur Dioxide (SOx)

0.0039

The application to construct and 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 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

[email protected]

No written comments or hearing requests postmarked after May 18, 2015 will be accepted.

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