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Draft Air Quality Permit 7257 - U.S. Naval Research Laboratory

Friday, June 7, 2019


Draft Air Quality Permit 7257, U.S. Naval Research Laboratory, Construction and operation a dust collector for woodworking operations at Building 57 of the U.S. Naval Research Laboratory, 4555 Overlook Ave 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 Permit No. 7257 to The U.S. Naval Research Laboratory to construct and operate a Downflo Evolution dust collector, identified as B57-DstCol-3, to be located in the West side of Building 57, U.S. Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC.  The contact person for the facility is Keith Hull, Director, Research & Development Services Division, phone number: (202) 767-2232.


The estimated maximum annual emissions from the dust collector are expected to be as follows:


Dust Collector Maximum Annual Emissions



Total Suspended Particulate Matter (TSP)


The proposed dust collector emission limits are as follows:

a.   Total suspended particulate matter (TSP) emissions from the dust collector shall not exceed 0.03 gr/dscf or 1.62 lb/hr. [20 DCMR 603]

b.   Adding diluent air to the gas stream to comply with Condition II(a) is prohibited. [20 DCMR 603.3]

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]

d.   Visible emissions shall not be emitted into the outdoor atmosphere from this equipment. [20 DCMR 201 and 20 DCMR 606.1].

The permit application and supporting documentation, along with the draft permit is 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 draft 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 July 8, 2019 will be accepted.


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