A district court held that a property owner may go forward with its CERCLA claims against several retail stores in connection with contamination stemming from the property, but dismissed the owner's RCRA claims.

A California appellate court held that California's Commission on State Mandates erred in ruling that certain requirements set forth in a municipal stormwater sewer permit for Los Angeles County constituted unfunded state mandates subject to reimbursement under the state constitution.

A district court denied industry groups' motion to intervene in a CAA citizen suit concerning EPA's alleged failure to review the ozone NAAQS in a timely manner.