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District of Columbia Water and Sewer Authority (DC Water), Proposed Air Quality Permits for Two Boilers at Blue Plains Central Maintenance Facility



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, Washington, DC, intends to issue air quality permits (#6422 and #6423) to the District of Columbia Water and Sewer Authority (DC Water), to construct and operate two identical 6.123 MMBTU/hr (150 hp) Cleaver Brooks natural gas fired steam boilers.  The emission units are to be located at the Blue Plains Central Maintenance Facility, 5000 Overlook Avenue SW, Washington DC. The contact person for the facility is Meena Gowda, Principal Counsel, at (202) 787-2628.

Emissions Change:  Because the two boilers to be installed are replacing similar, but older and slightly larger equipment, no emissions increases are expected.  Potential annual emissions from the proposed equipment are as follows:

Table 1 –Central Maintenance Facility Boiler Emissions:


 Emissions per boiler





Particulate Matter (PM) (Total)1




Sulfur Oxides (SOx)




Nitrogen Oxides (NOx)




Volatile Organic Compounds (VOC)




Carbon Monoxide (CO)




(1) Total PM is the sum of the filterable PM and condensable PM. 

The proposed overall emission limits for the equipment are as follows:

  1. Each of the two (2) identical 6.123 million BTU per hour Cleaver Brooks natural gas –fired boilers identified as C7-2 and C8-2, shall not emit pollutants in excess of those specified in the following table [20 DCMR 201]:



Short-Term Limit

(Natural Gas) (lb/hr)

Carbon Monoxide (CO)


Oxides of Nitrogen (NOx)


Particulate Matter < 10 microns (PM10)


Volatile Organic Compounds (VOC)


Sulfur Dioxide (SO2)


b.   Visible emissions shall not be emitted into the outdoor atmosphere from the boilers, 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]

d.   Particulate matter emissions from each boiler shall not exceed 0.114 pound per million BTU. [20 DCMR 600.1]

The permit applications and supporting documentation, along with the draft permits and the Department’s analyses of the applications are available for public inspection at AQD and copies may be made 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 permits 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


No written comments postmarked after January 7, 2013 will be accepted.

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