Agreements National Seal Co., Aurora, Ill., has agreed to distribute HDPE drainage pipe manufactured by Poly Pipe Industries, Gainesville, Texas.

Komatsu Ltd. of Japan and Cummins Engine Co. Inc., Columbus, Ind., have reached an agreement in principle to establish a cooperative business relationship to develop diesel engines.

Contracts The Metropolitan Government of Nashville and Davidson County, Tenn., have awarded a five-year contract to American Ash Recycling Corp., Jacksonville, Fla., to process municipal solid waste ash from the Nashville Thermal Transfer Corp. waste-to-energy plant.

Expansions Toter Inc. will expand its manufacturing fa-cilities in Statesville, N.C., and Sanger, Calif., and construct a new office building at its Statesville, N.C., headquarters.

New Facility Mitsubishi Fuso Truck of America Inc., Bridgeport, N.J., has opened mini-part distribution centers in Jacksonville, Fla., and Sac-ramento, Calif.

Waste Alternatives Inc., a turn-key post-consumer plastics recycling operation, has opened in Ocala, Fla.

The David J. Joseph Co., Cincinnati, has opened a MSW ferrous processing facility in West Palm Beach, Fla.

New Group The Poly-styrene Packaging Council Inc., Washington, D.C., a trade association that specializes in government relations and communications for the poly-styrene food service and protective packaging industry, is joining with the Society of the Plastics Industry Inc., a Wash-ington, D.C., plastics industry trade association.

New Name SEC Donohue, Greenville, S.C., has changed its name to RUST Environment & Infrastructure Inc.

New Office Vapex En-vironmental Technologies Inc., a subsidiary of Envirogen Inc., has opened a branch office in Lawrenceville, N.J.

The World Environment Center, New York, has opened an office in Prague, Czech Re-public, Czechoslovakia.

Haley & Aldrich Inc., Boston, has opened a Cleveland office to provide environmental consulting services and geotechnical engineering in the Great Lakes Region.

ICF Kaiser Engineers, Oak-land, Calif., has opened a Houston office to provide environmental management and engineering consulting services to industrial facilities.