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Proposed Air Quality Permit 7126 - District of Columbia Water and Sewer Authority

Friday, September 15, 2017

PUBLIC NOTICE

Proposed Air Quality Permit 7126, District of Columbia Water and Sewer Authority (DC Water), Construction and operation of a 250 kWe diesel-fired emergency generator set at the Blue Plains Wastewater Treatment Plant, 5000 Overlook Avenue SW

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 No. 7126 to the District of Columbia Water and Sewer Authority (DC Water) to construct and operate one (1) 250 kWe MTU emergency generator set as listed below, to be located at the Blue Plains wastewater treatment plant (WWTP), 5000 Overlook Avenue SW, Washington DC 20032. The contact person for the facility is Meena Gowda, Principal Counsel, at (202) 787-2628.

The emergency generator set below is to be permitted:

Equipment Location

Address

Generator (Engine) Size

Permit No.

Blue Plains Wastewater Treatment Plant (WWTP),

South of TDPS

5000 Overlook Ave. SW

Washington DC 20032

250 kWe (418 hp)

7126

The proposed emission limits are as follows:

a.   Emissions from the generator set shall not exceed those found in the following table as measured using the procedures set forth in 40 CFR 89, Subpart E for NMHC, NOx, and CO and 40 CFR 89.112(c) for PM [40 CFR 60.4205(b), 40 CFR 60.4202(a), and 40 CFR 89.112(a)-(c)]:

Pollutant Emission Limits (g/kW-hr)

NMHC+NOx

CO

PM

4.0

3.5

0.20

b.   Visible emissions shall not be emitted into the outdoor atmosphere from this generator set, 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].

Note that 20 DCMR 606 is subject to an EPA-issued call for a State Implementation Plan (SIP) revision (known as a “SIP call”) requiring the District to revise 20 DCMR 606. See “State Implementation Plans: Response to Petition for Rulemaking; Restatement and Update of EPA’s SSM Policy Applicable to SIPs; Findings of Substantial Inadequacy; and SIP Calls To Amend Provisions Applying to Excess Emissions During Periods of Startup, Shutdown and Malfunction”, 80 Fed. Reg. 33840 (June 12, 2015). It is likely that this federal action will result in changes to the requirements of 20 DCMR 606. Any such changes, once finalized in the DCMR, will supersede the language of Condition II(b) as stated above.

c.   In addition to Condition II(b), exhaust opacity, measured and calculated as set forth in 40 CFR 86, Subpart I, shall not exceed [40 CFR 60.4205(b), 40 CFR 60.4202(a), and 40 CFR 89.113]:

1.   20 percent during the acceleration mode;

2.   15 percent during the lugging mode;

3.   40 percent during the peaks in either the acceleration or lugging modes. Note that this condition is streamlined with the requirements of 20 DCMR 606.1.

d.   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 emergency generator set are as follows:

Pollutant

Maximum Annual Emissions (tons/yr)

Carbon Monoxide (CO)

0.10

Oxides of Nitrogen (NOx)

0.79

Total Particulate Matter (PM Total)

0.02

Volatile Organic Compounds (VOC)

0.03

Sulfur Dioxide (SO2)

0.001

The application to construct and operate the emergency generator set 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

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

Washington, DC 20002


[email protected]


No comments or hearing requests submitted after October 16, 2017 will be accepted.


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