calendar year, the carbon intensity with respect to any eligible facility shall be an amount equal to the quotient of— (i) the covered emissions (as determined under paragraph (2)) with respect to such facility, divided by (ii) the total weight (expressed in tons) of covered primary goods produced at such facility during the preceding calendar year. (B) Covered national industry (i) In general For purposes of this subchapter, the carbon intensity with respect to any covered national industry shall be an amount (as determined by the Secretary) equal to the quotient of— (I) an amount equal to the sum of the covered emissions (as determined under paragraph (2)) with respect to all eligible facilities which produce covered primary goods which are included within such industry for calendar year 2025, divided by (II) the total weight (expressed in tons) of covered primary goods within such industry which are produced at all such eligible facilities during such year. (ii) Determination For purposes of this subchapter, the Secretary (in coordination with the relevant parties) may determine which types of eligible facilities (and any related covered primary goods) are included or excluded within a covered national industry, provided that such determination— (I) facilitates a fair comparison of carbon intensities across similar eligible facilities (based on a comparison of the material inputs and outputs of such facilities), and (II) does not meaningfully reduce the scope of greenhouse gas emissions covered by this subchapter. (iii) Excluded facilities In the case of any eligible facility which, pursuant to clause (ii), is excluded from a covered national industry and is not included in any other covered national industry, such facility shall be deemed to not be included in any covered national industry. (C) Petition for specific goods (i) In general In the case of any covered national industry which produces more than 1 covered primary good, a covered entity may file a petition with the Secretary to— (I) determine the