Editors' Summary: In this Dialogue, Mr. Want describes the CERCLA amendments passed by the House Committee on Energy and Commerce's Subcommittee on Commerce, Transportation, and Tourism. At press time, the full committee was proceeding with markup, but the committee version was not expected to differ substantially from the subcommittee bill, with one notable exception. On July 18, the Committee approved by voice vote an amendment, sponsored by Rep. Wyden (D-Or.), that would require EPA to start 540 cleanups within six years, or give Congress a detailed explanation for its failure.The Committee had rejected the day before a similar, but more stringent amendment offered by Rep. Florio (D-N.J.), chairman of the Subcommittee.