CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 51—REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS > SUBPART A—Air Emissions Reporting Requirements (§51.1 to §51.50) > 51.15—What data does my state need to report to EPA?

51.15—What data does my state need to report to EPA?

(a) Pollutants. Report actual emissions of the following (see § 51.50 for precise definitions as required):
(1) Required pollutants for triennial reports of annual (12-month) emissions for all sources and every-year reports of annual emissions from Type A sources:
(i) Sulfur dioxide (SO2 ).
(ii) Volatile organic compounds (VOC).
(iii) Nitrogen oxides (NOX ).
(iv) Carbon monoxide (CO).
(v) Lead and lead compounds.
(vi) Primary PM2.5 . As applicable, also report filterable and condensable components.
(vii) Primary PM10 . As applicable, also report filterable and condensable components.
(viii) Ammonia (NH3 ).
(2) Required pollutants for all reports of ozone season (5 months) emissions: NOX.
(3) Required pollutants for triennial reports of summer day emissions:
(i) NOX.
(ii) VOC.
(4) Required pollutants for every-year reports of summer day emissions: NOX.
(5) A state may, at its option, include estimates of emissions for additional pollutants (such as other pollutants listed in paragraph (a)(1) of this section or hazardous air pollutants) in its emission inventory reports.
(b) Sources. Emissions should be reported from the following sources in all parts of the state, excluding sources located on tribal lands:
(1) Point.
(2) Nonpoint.
(3) Onroad mobile.
(4) Nonroad mobile.
(c) Supporting Information. You must report the data elements in Tables 2a through 2c in Appendix A of this subpart. We may ask you for other data on a voluntary basis to meet special purposes.
(d) Confidential Data. We do not consider the data in Tables 2a through 2c in Appendix A of this subpart confidential, but some states limit release of this type of data. Any data that you submit to EPA under this subpart will be considered in the public domain and cannot be treated as confidential. If Federal and state requirements are inconsistent, consult your EPA Regional Office for a final reconciliation.
(e) Option to Submit Inputs to Emission Inventory Estimation Models in Lieu of Emission Estimates. For a given inventory year, EPA may allow states to submit comprehensive input values for models capable of estimating emissions from a certain source type on a national scale, in lieu of submitting the emission estimates otherwise required by this subpart.