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Proposed Air Quality Permit 6999 - Cassidy Turley Commercial Real Estate Services

Friday, December 11, 2015


Proposed Air Quality Permit 6999, Cassidy Turley Commercial Real Estate Services, Inc. d/b/a Cushman & Wakefield, One existing 500 kWe diesel-fired emergency generator set at 10 G Street NE

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 Department of Energy and Environment (DOEE), located at 1200 First Street NE, 5th Floor, Washington, DC, intends to issue Permit #6999 to Cassidy Turley Commercial Real Estate Services, Inc. d/b/a Cushman & Wakefield to operate one Caterpillar 500 kWe diesel-fired emergency generator set with a 749 bhp engine at APA Ten G LLC, located at 10 G Street, NE Washington, DC 20002. The contact person for the facility is Todd Wise, Chief Engineer, at (202) 607-7710. 

Emergency Generator to be Permitted

Equipment Location 


Generator/ Engine Size

Engine Model/ Serial Number

Permit No.


10 G Street NE Washington, DC

10 G Street NE Washington, DC 20002

500 kWe/

749 hp

3412/ 81Z19486


The proposed emission limits are as follows:

a.   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]

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 emissions from the 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)


Oxides of Sulfur (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 John C. Nwoke at (202) 724-7778.

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:

John C. Nwoke
Environmental Engineer, Permitting Branch - Air Quality Division

Department of Energy and Environment
1200 First Street NE, 5th Floor
Washington, DC 20002

[email protected]

No written comments or hearing requests postmarked after January 11, 2016 will be accepted.

For more information, please contact John C. Nwoke at (202) 724-7778.