than once. (5) Petition With respect to any product, the petition described in paragraph (1) shall include— (A) the applicable HTS code with respect to such product, (B) the eligible entities and the percentage of domestic production represented by such eligible entities, and (C) proposed methods for determination of the pollution intensity with respect to such product. (6) Pollution intensity For purposes of paragraph (5)(C), the proposed methods shall— (A) satisfy the applicable requirements under section 4693, (B) utilize existing pollution intensity values for any covered component part, covered contributing part, or covered transforming part contained in the product, and (C) at the election of the petitioner, for purposes of achieving an accurate calculation of pollution intensity, include additional methods to determine the pollution intensity of any component part or transforming part which is not included under subparagraph (B). (7) Implementation (A) In general Not later than 30 days after the date on which the petition described in paragraph (1) was received by the Secretary, the Secretary shall determine whether the domestic production requirement under such paragraph is satisfied with respect to the product to be included as a covered product. (B) Inclusion as covered product For purposes of subparagraph (A), if the Secretary determines that the domestic production requirement under paragraph (3) is satisfied with respect to the product— (i) such product shall be included as a covered product for purposes of this subchapter, (ii) the inclusion of such product as a covered product shall be published in the Federal Register, and (iii) such product shall be subject to the rulemaking process under section 4698(d). (C) Determination of pollution intensity Subsequent to any determination under subparagraph (B) to include a product as a covered product for purposes of this subchapter, the Board shall— (i) review the proposed methods for determination of the pollution intensity with respect to such product