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Proposed Air Quality Permits 6867 and 6868 - Skanska Jay Dee JV


Proposed Air Quality Permits 6867 and 6868 – Skanska Jay Dee JV, Two 1,303 kW non-emergency natural gas fired generator sets for the DC Water First Street Tunnel Project at the intersection of First Street NW and Channing St. NW

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 permits (#6867 and #6868) to Skanska Jay Dee JV to construct and operate two identical Cummins model QSK60G natural gas fired non-emergency generator sets, to be located at the McMillan Reservoir site in Washington, DC. The units will be used as part of the DC Water First Street Tunnel project.  The contact person for the applicant is Bianca Messina, Engineer, at (917) 299-1855.

Generators to be Permitted

Equipment Location 


Generator Size

Engine Size 

Permit Nos.

Intersection of First Street NW and Channing Street NW

2507 First Street NW Washington, DC 20001

1,303 kW

1,747 bhp

6867 and 6868

The proposed emission limits are as follows:

a.   Emissions from these units shall not exceed those in the following table. [20 DCMR 209 (for NOx), 40 CFR 60.4233(e) and Subpart JJJJ, Table 1 (for non-emergency spark ignition natural gas units manufactured after July 1, 2010)]:

Pollutant Emission Limits (g/HP-hr)







aNote that this is a streamlined emission limit.  40 CFR 60, Subpart JJJJ indicates a limit of 1.0 g/HP-hr, but based on the applicant’s evaluation pursuant to 20 DCMR 209, it was determined that an emission limit of 0.6 g/HP-hr was appropriate and is therefore included here as the more stringent requirement.

bNote that per 40 CFR 60.4244(f), this VOC limit excludes formaldehyde.

b.   Visible emissions shall not be emitted into the outdoor atmosphere from the generator engines, 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 emissions from the two generator sets are as follows:


Emission Rate (lb/hr)

Each Unit

Maximum Annual Emissions (tons/yr)

Each Unit

Maximum Annual Emissions (tons/yr)

Both Units Combined

Carbon Monoxide (CO)




Oxides of Nitrogen (NOx)




Total Particulate Matter

(PM, Total)




Volatile Organic Compounds (VOCs)




Sulfur Dioxide (SOx)




Total Hazardous Air Pollutants (HAPs)




The application to construct and operate the generator sets and the draft permits 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 postmarked after June 30, 2014 will be accepted.

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