A longtime associate of University of the District of Columbia President Robert L. Green who received $37,000 in consulting fees paid by UDC was paid $10,000 as a consultant to the D.C. government in late 1983, university and D.C. government officials confirmed yesterday.

Cassandra A. Simmons, a faculty member at Michigan State University, where Green was a dean before going to UDC, was hired by then-D.C. secretary Dwight S. Cropp to provide technical assistance for the District's international sister cities program. Cropp became a vice president at UDC in February 1984, several months after Simmons worked for him in the District building.

Cropp said yesterday that Simmons came "highly recommended" and worked for approximately one month as a consultant in his office. He declined to say who had recommended Simmons.

Green was out of town yesterday, and his spokesman, Gilbert Maddox, could not be reached for comment.

In a report to the UDC trustees last week, Green said Simmons was a former colleague whom he hoped to recruit to a permanent position at UDC. His report said she had received six contracts totaling $17,200 from the university since he took office in September 1983. In addition, The Washington Post reported last month that Simmons was paid $20,000 in 1984 for a study she produced for the D.C. Department of Public Works with two other consultants. Simmons was hired by the public works department and paid with funds transferred from UDC, according to records obtained by The Post from the university and the agency.

Simmons, reached at her home in East Lansing, Mich., yesterday, said that she does not remember details of her study on sister cities. "It was quite a while ago," she said. "As I remember it was Bangkok and the other sister city is Dakar Senegal."

Grace C. Iverson, a consultant from Michigan hired three times by Green, was paid $375 in December 1983 for work on a cooperative sister city program between UDC, the D.C. public schools, Bangkok and Dakar, according to documents obtained by The Post.

Iverson, an official with the Lansing, Mich., public schools, and Simmons worked together on several UDC consulting projects, according to records released to The Post under the D.C. Freedom of Information Act.

Since August 1983, Simmons has received payments from various District agencies in at least four different ways.

She has been paid as a consultant at UDC, as a UDC payroll employe for one month, as a consultant to the public works department paid for with university funds and as a consultant to the D.C. secretary, an arm of Mayor Marion Barry's administration, paid for with District funds.

Cropp said that Simmons produced a report on the sister cities project.

He said he was unaware at the time he hired her that she also had been a consultant at UDC.

Simmons said yesterday, "I am sure I was awarded the contracts on the merit of my experience."

A draft audit by D.C. Auditor Otis Troupe said Green spent more than $2,000 of UDC funds on flowers for associates and relatives. The Post reported that one unidentified associate in the audit who received flowers was Simmons.

Simmons said yesterday that she could not recall whether Green had sent her flowers. "I had major surgery, abdominal surgery," she said. "I received flowers from many of my colleagues."

In his report to the trustees, Green said he hired 11 former associates from Michigan and paid them a total of $87,166 in consulting fees.

One consultant, Arthur Dudley, a vocational rehabilitation specialist in Lansing, is a relative of Green's by marriage. He received $1,136 in travel and fees for two days of consulting in 1984.