Is there guidance on the acceptable accuracy of stack parameters?

We have not established a formal standard for accuracy due to the wide variety of types, locations and applications for the equipment in question. We request that actual measurements be conducted for information such as stack height and diameter if facility plans are not available due to the age of the emissions unit. For taller, inaccessible stacks, this may involve using an inclinometer and a rangefinder. Information such as flow rate and temperature can be taken from design plans, old stack tests, or estimated based on process knowledge.

We do not expect facilities to conduct stack tests to obtain this information.

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1. Who must submit an emissions inventory report?
2. Who submits the emissions inventory report for a source that changed ownership?
3. Do I need to submit an emissions inventory if I did not operate in the previous calendar year?
4. Do I need to submit an emissions inventory if my facility shut down its operations in the previous calendar year?
5. What if some of the information pertaining to my facility is confidential?
6. If my facility doesn't operate all four quarters, why do the seasonal throughput percentages have to sum to 100%?
7. Why are the months listed for Seasonal Operating Percentages December to February, March to May, June to August, and September to November instead of the typical quarterly segments?
8. What should peaking plants enter for start time, hours/day, and days/week?
9. What pollutants must be reported?
10. Are there activities that are exempt from the emissions inventory?
11. Am I required to report fugitive emissions at my facility?
12. Do emissions from light duty vehicles such as security vehicles need to be included in the calculation of fugitive emissions from haul roads?
13. How do I report metals (or metalloids) hazardous air pollutants (HAP) such as chromium?
14. Which compounds are considered volatile organic compounds (VOC)?
15. What compounds are considered glycol ethers?
16. How should facilities report emissions due to malfunctions or upsets?
17. Which emission factor should I use if different factors are listed for volatile organic compounds (VOC), total organic compounds (TOC), and non-methane TOC?
18. Should stack height be measured from the ground or the top of the building?
19. Is there guidance on the acceptable accuracy of stack parameters?
20. What types of particulate matter must be reported?
21. Which Particulate Matter (PM) emission factor should I use?
22. Who pays emissions inventory fees for a source that changed ownership?
23. Is there a fee associated with my Class II Inventory?