Jack E. Aalseth, 57, founder and retired board chairman and chief executive officer of ERC International of Fairfax, died Sept. 5 at a hospital in Fort Lauderdale, Fla., after a heart attack. He lived in McLean.

He came to Washington and founded the Evaluation Research Corp. in 1976. He built ERC into a major professional services firm before it was acquired earlier this year by the Ogden Corp. Mr. Aalseth retired from his company posts at that time.

During his years at the helm, the company's professional services included defense contracting and biomedical research and development. The company also started the ERC Environmental and Energy Services Co., which it largely owned. ERC was sold to Ogden for a reported $80 million.

Mr. Aalseth had served on the boards of ESI Industries and the Madison Bank of Virginia. He also had served as a director of the Washington USO and the International Policy Board of the Privatization Council. He was a founder of the Professional Services Council, a nonprofit group supporting the American service industry.

Mr. Aalseth was born in Clark, S.D., and received a bachelor's degree in physics from the University of California at San Diego. He served in the Marine Corps from 1950 to 1954, spending part of that time in Hawaii.

Before coming here, he had worked in California. He had been an engineer with General Dynamics and the Lockheed Co.'s missile and space division, worked for United Testing Laboratories, then founded a technology services firm that was bought by the Planning Research Corp. He also had developed a marina and boat brokerage business.

His marriage to Lois Aalseth ended in divorce.

Survivors include his wife, Miki, of McLean; two children by his first marriage, Jacqueline Aalseth Helm and Craig B. Aalseth, both of San Diego; two stepchildren, Katie Rigger of McLean and Kurt Rigger of Fairfax; his parents, Oliver and Margaret Aalseth of Cabot, Ark.; and two grandchildren.

MAN MOHAN VARMA

Howard University Professor

Man Mohan Varma, 58, an engineering professor at Howard University since moving here in 1966, died of a brain tumor Sept. 6 at Georgetown University Hospital. He lived in Silver Spring.

At the time of his death, Dr. Varma was a distinguished professor of civil engineering at Howard. Before that, he had been an associate professor and professor of bio-environmental engineering at the university.

He was an authority on the health effects caused by certain environmental contaminants in water. He was the author of more than 100 technical papers and articles and had reviewed articles for such publications as the Journal of Water Pollution and the Environmental Health Journal.

Dr. Varma had been a consultant to the World Health Organization as well as governments in the Caribbean and the Middle East. He had been a Fulbright Scholar and a visiting professor at Harvard University. He also had lectured in China.

He was a member of the Water Pollution Control Federation and the American Water Works Association. He was the recipient of a 1985 prize from an Italian scientific group.

Dr. Varma, who was a native of India, came to this country in 1956. He received a bachelor's degree in civil engineering from Auburn University, master's degrees from both Iowa State University and Oklahoma State University, and a doctorate in environmental engineering from the University of Oklahoma. Before moving here, he had taught at the University of Oklahoma and Tufts University.

Survivors include his wife, Kiran, and two sons, Mohid and Umang, all of Silver Spring; a brother; and five sisters.

SUSAN W. GAYLOR

Air Force Lieutenant Colonel

Susan W. Gaylor, 52, a retired Air Force lieutenant colonel who had served in Vietnam in 1971 and 1972, died of cancer Sept. 8 at a hospital in Richmond. She had homes in Fairfax Station and Madison, Va.

Col. Gaylor spent 22 years in the Air Force before retiring from active duty in 1981. In Vietnam, she had been plans and program chief of the second aerial port group.

From 1977 until retiring from the Air Force, she had taught management and logistics at the Industrial College of the Armed Forces here. Before that, she had served on the staff here of the Military Traffic Management Command.

Her decorations included the Bronze Star, the Meritorious Service Medal and the Air Force Commendation Medal.

Col. Gaylor was a native of Buffalo and a graduate of Ithaca College in New York. She received a master's degree in aerospace operations management from the University of Southern California.

She had attended St. Mary's Catholic Church in Fairfax.

Survivors include her husband, retired Air Force Col. Ray Gaylor of Madison and Fairfax Station; four adopted children, Adam Wright of Charlottesville, Paul Wright of Madison, and Sarah and Kathryn Wright, both of Centreville; her parents, Angelo and Gertrude Tasca, and a sister, Bridget Webb, all of North Tonawanda, N.Y.; and two brothers, Paul Tasca of San Diego and Peter Tasca of North Tonawanda.

CHARLES J. MOLTZ

Cartographer and Draftsman

Charles Joseph Moltz, 67, a retired cartographer and draftsman with the U.S. Geological Survey in Washington, died Sept. 7 at Sacred Heart Hospital in Pensacola, Fla. He had diabetes.

Mr. Moltz, who lifed in Gulf Breeze, Fla., was born in Richmond. He grew up in Washington and graduated from Gonzaga College High School. He attended American University and the Columbia Technical Institute.

During World War II, he served in the Army in Europe and was wounded in action.

In 1948, he went to work for the Geological Survey. He retired in 1977 and moved to Florida. He was a former resident of Clarksburg.

Survivors include his wife, Janet P. Moltz, whom he married in 1943, of Gulf Breeze; a son, Robert P. Moltz of Potomac; six sisters, Dorothy Jackson of Pensacola, Lorraine Wuerschmidt of Springfield, Mary Lou Brezina of Edgewater, Betty Smandra of Annapolis, Carolyn Kettner of Clinton and Beverly Kahl of Beltsville; six brothers, Michael A. and George Edward Moltz, both of Riverdale, Montgomery B. Moltz of Silver Spring, Robert Lee Moltz of College Park, Colin Moltz of Ocean City, Md., and Preston Moltz of Edgewater; and two grandchildren.

EDWIN L. STOLL

Public Relations Executive

Edwin L. Stoll, 75, a longtime Washington public relations official who retired in 1985 as corporate affairs director of the National Housing Partnership, died Sept. 8 at Manor Care nursing home in Potomac. He had a brain tumor.

In 1946, he settled here and joined the National Association of Real Estate Boards, which became the National Association of Realtors. He was named public relations director of the association in 1955, then in 1970 was named staff vice president for public affairs and Washington office director.

He joined the National Housing Partnership later in the 1970s. In recent years, he had written magazine articles on real estate.

Mr. Stoll, who had lived in Potomac for the last 25 years, was a native of Illinois. He received a journalism degree from the University of Illinois in 1937. After that, he was a reporter for the Chicago Tribune before serving with the Army during World War II.

He was a public relations officer with Gen. Mark Clark's Fifth Army in Italy during the war. He was stationed at the Pentagon when he retired from active duty in 1946 as a lieutenant colonel.

Mr. Stoll was a member of Pilgrim Lutheran Church in Bethesda and had been an officer of the Washington chapter of the Public Relations Society of America. He was a member of the National Press Club, the National Association of Real Estate Editors, Kenwood Country Club and the Square Foot Luncheon Club.

Survivors include his wife of 40 years, Sally Y., of Potomac; two daughters, Cynthia S. Gordon of Gaithersburg, and Melissa V. Stoll of Silver Spring; a brother, Robert D., of Demarest, N.J.; and two grandchildren.

DARRELL E. MACKIERNAN

Teacher in D.C. Schools

Darrell E. Mackiernan, 78, who taught English in the D.C. Public Schools for 27 years before retiring in 1972, died of leukemia Sept. 8 at Suburban Hospital. She lived in Silver Spring.

Mrs. Mackiernan began her career at Stuart Junior High School in 1945, then transferred to Alice Deal Junior High in the mid-1960s. She taught there until retiring.

She also raised standard schnauzers. She was a past president, secretary and treasurer of the Potomac Valley Standard Schnauzer Club. She had helped found the club in 1962.

Mrs. Mackiernan, who came here in 1943, was a native of Maine. She was a 1934 graduate of the University of Maine and received a master's degree in English from George Washington University in 1948. She had taught school in Maine and Massachusetts before moving here. During World War II, she had worked for the YWCA here and done volunteer work for the USO.

Her husband, Douglas S. Mackiernan, whom she married in 1941, died in 1948. Her survivors include a daughter, Gail B. Mackiernan of Silver Spring.