This is a weekly summary of selected prime contracts recently awarded by the federal government to companies and other vendors in Maryland.

Maryland contracts

NUS Corp. in Gaithersburg won a $130,000,000 contract from the Navy to provide long-term environmental action for the Northern Division and Chesapeake Division, Naval Facilities Engineering Command.

Wartsila Diesel Inc. in Chestertown won a $9,602,464 contract from the Navy to supply electric wire, power and distribution equipment.

ERC BioServices Corp. in Gaithersburg won a $2,357,884 contract from the National Heart, Lung and Blood Institute to provide maintenance of a blood specimen repository.

Protective Security Inc. in Beltsville won a $1,500,000 contract from the General Services Administration to provide an alarm and signal system.

International Data Products Corp. in Gaithersburg won a $1,251,740 contract from the Department of Energy to supply automated data processing hardware and software.

Comprehensive Health Services in Rockville won a $647,012 contract from the U.S. Postal Service to provide medical services.

Xeta International Inc. in Indian Head won a $645,984 contract from the Navy to provide technical services.

Werres Corp. in Rockville won a $508,598 contract from the Air Force for a small parts handling system.

McDonnell Landscape Maintenance Inc. in Bethesda won a $432,596 contract from the Army to provide landscaping at Fort

Belvoir, Va.

Tektronix Inc. in Gaithersburg won a $400,008 contract from the Department of Transportation to supply oscilloscopes, amplifiers, digitizers and other equipment.

Barton, Duer and Koch in Cheverly won a $334,389 contract from the General Services Administration to supply xerographic paper.

Wilmer Manufacturing Co. in Beltsville won a $291,660 contract from the Defense Electronics Supply Center to furnish a signal light.

Williams and Heintz Map Corp. in Capitol Heights won a $288,651 contract from the Government Printing Office to provide printing services.

Banks Contracting Inc. in Baltimore won a $139,700 contract from the Army for a tourmobile shelter at Arlington National Cemetery, Arlington, Va.

Computer Data Systems Inc. in Rockville won a $134,020 contract from the Pension Benefit Guaranty Corp. to provide payroll and travel services.

Alleghany Printing in Timonium won a $122,016 contract from the Government Printing Office to supply forms.

Viereck Co. in Columbia won a $105,947 contract from NASA to " supply four wire-cutting electrical discharge machines.