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For questions or information regarding air emissions factors or air emissions inventories, contact the Info CHIEF Help Desk at info.chief@epa.gov

Mailing Address:
US EPA
Office of Air Quality Planning and Standards (OAQPS)
Info CHIEF Help Desk
Mail Code D243-05
Research Triangle Park, NC 27711

Phone: (919) 541-1000

| Office of Air Quality Planning & Standards | Technology Transfer Network |
| Clearinghouse for Inventories & Emissions Factors |

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