Public agencies that build major projects must publish every public comment they receive and a written reply. This paper studies one such record: Appendix H of the 2012 environmental review for LA Metro's Westside Subway Extension. The volume contains 1,676 distinct comment-and-reply exchanges across 3,119 pages. Because pairs often span multiple pages and every cited excerpt is character-checked at the page it sits on, the analysis is run at the pair-by-page row, yielding 2,668 in-scope rows. A corpus-scale lexical coding of all 2,668 rows is combined with a close reading of eight pairs in the densest theme. Fifty-seven percent of replies redirected commenters to decisions the agency had already made; 37 percent translated public concerns into technical language; only 2 percent of comments arrived as personal or moral arguments. The agency listens substantively but on its own terms.