Acknowledgement of receipt (07/17/07) of judgment from Clerk, United States Court of Appeals for the Eighth Circuit received.

JUDGMENT ISSUED.

Adjudged to be AFFIRMED. Thomas, J., delivered the opinion for a unanimous Court. (orders list)

Argued. For petitioner: Thomas G. Hungar, Deputy Solicitor General, Department of Justice, Washington, D.C. For respondent: Owen T. Armstrong, Jr., Milwaukee, Wis.; and Jay D. Geck, Deputy Solicitor General, Olympia, Wash. (for Washington, et al., as

Reply of petitioner United States filed. (Distributed)

Motion of Washington, et al. for leave to participate in oral argument as amici curiae and for divided argument GRANTED. (orders list)

Brief amici curiae of Association of California Water Agencies, et al. filed. (Distributed)

Brief amicus curiae of James Kotrous filed. (Distributed)

Brief amicus curiae of United States Conference of Mayors filed. (Distributed)

Brief of respondent Atlantic Research Corporation filed. (Distributed)

Brief amici curiae of Natural Resources Defense Council, et al. filed. (Distributed)

Brief amicus curiae of Lockheed Martin Corporation filed. (Distributed)

Brief amicus curiae of City of New York filed. (Distributed)

Brief amici curiae of Superfund Settlements Project, et al. filed. (Distributed)

Brief amici curiae of Former Administrator Carol M. Browner, et al. filed. (Distributed)

Brief amicus curiae of Aviall Services, Inc. filed. (Distributed)

Brief amici curiae of Washington, et al. filed. (Distributed)

Brief amicus curiae of Consolidated Edison Company of New York, Inc. filed. (Distributed)

Brief amici curiae of E.I. Du Pont De Nemours and Company, et al. filed. (Distributed)

Brief amicus curiae of Metropolitan Water Reclamation District of Greater Chicago filed. (Distributed)

Brief amici curiae of Ford Motor Company and General Motors Corporation filed. (Distributed)

Motion of Washington, et al. for leave to participate in oral argument as amici curiae and for divided argument filed.

CIRCULATED.

Record received from U.S.D.C. for Western District of Arkansas. (1 envelope)

Brief amicus curiae of Reading Company filed.

Brief amici curiae of Cooper Industries, LLC, et al. filed.

Brief amicus curiae of Huron Valley Steel Corporation filed.

Brief of petitioner United States filed.

Joint appendix filed.

Record received from U.S.C.A. for 8th Circuit. (1 envelope)

SET FOR ARGUMENT ON Monday, April 23, 20007.

Petition GRANTED. (orders list)

Reply of petitioner United States filed. (Distributed)

DISTRIBUTED for Conference of January 19, 2007.

Brief of respondent Atlantic Research Corporation in support filed.

Response Requested . (Due January 8, 2007)

DISTRIBUTED for Conference of January 5, 2007.

Brief amicus curiae of Aviall Services, Inc. filed.

Petition for a writ of certiorari filed. (Response due November 24, 2006)

United States, Petitioner, represented by Paul D. Clement

United States, Petitioner, represented by Thomas G. Hungar

Atlantic Research Corporation, Respondent, represented by O. Thomas Armstrong Jr.

Atlantic Research Corporation, Respondent, represented by Frank L. Steeves

Association of California Water Agencies, et al., Amicus Curiae, represented by Paul S. Weiland

Aviall Services, Inc., Amicus Curiae, represented by Richard Faulk

City of New York, Amicus Curiae, represented by Leonard J. Koerner

Consolidated Edison Company of New York, Inc., Amicus Curiae, represented by Stephen B. Kinnaird

Cooper Industries, LLC, et al., Amicus Curiae, represented by Dale Edward Stephenson

E.I. Du Pont De Nemours and Company, et al., Amicus Curiae, represented by Mark I. Levy

Ford Motor Company and General Motors Corporation, Amicus Curiae, represented by John McGahren

Former Administrator Carol M. Browner, et al., Amicus Curiae, represented by Joel M. Gross

Huron Valley Steel Corporation, Amicus Curiae, represented by Jack D. Shumate

James Kotrous, Amicus Curiae, represented by Jacqueline Leigh McDonald

Lockheed Martin Corporation, Amicus Curiae, represented by Miguel A. Estrada

Metropolitan Water Reclamation District of Greater Chicago, Amicus Curiae, represented by Harvey M. Sheldon

Natural Resources Defense Council, et al., Amicus Curiae, represented by Jerry S. Phillips

Reading Company, Amicus Curiae, represented by James C. Martin

Superfund Settlement Project, et al., Amicus Curiae, represented by Michael W. Steinberg

United States Conference of Mayors, Amicus Curiae, represented by Paul E. Gutermann

Washington, et al., Amicus Curiae, represented by Jay Douglas Geck