| DISTRICT OF COLUMBIA |  |  |  |
| Facilities in the District of Columbia storing the largest amounts of extremely hazardous substances.* |
| Facility Name | City | Maximum amount in a single process (lbs) | Chemical |
1 | BLUE PLAINS WASTEWATER TREATMENT PLANT | WASHINGTON | 180,000 | Chlorine
2 | DALECARLIA WATER TREATMENT PLANT | WASHINGTON | 130,000 | Chlorine
3 | MCMILLAN WATER TREATMENT PLANT | WASHINGTON | 110,000 | Chlorine
| *Extremely hazardous substances as defined by the U.S. Environmental Protection Agency under the Clean Air Act, Section 112(r).
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