The Bladensburg Town Council at its Sept. 10 meeting approved construction of a park to commemorate Peter Carnes, a 17th-century Bladensburg resident who sent up the world's first hot-air balloon. The Maryland-National Park and Planning Commission has approved $120,000 in state and county funding for the project. The one-acre park will be in front of the Peace Cross at Baltimore Avenue and Annapolis Road. The park will include landscaped shrubs in the shape of a giant balloon. Construction is expected to begin next spring. CITY OF COLLEGE PARK

The College Park City Council at its Sept. 11 meeting voted to send a letter to Gov. William Donald Schaefer and members of the Prince George's County state and local delegations on behalf of the city's Youth and Family Services Bureau, whose state funding recently was abated. State officials halted funding after the bureau refused to sign an agreement with the state to disclose, upon request, the names of juveniles seeking counseling. State officials said they have no plans to request any specific information but believe they should have access to such information in case a situation warrants it.

Bureau employees, who are licensed social workers, called the request unethical and an invasion of privacy. Current federal privacy laws restrict information that doctors and other therapeutic workers may be forced to release without prior authorization by the patient..

Seventy-five percent of the bureau's budget, or $107,000, has been funded by the state. College Park, which previously provided 25 percent of the bureau's funding, has taken over complete financial responsibilty until the issue is resolved. Counseling services run by Bowie and Greenbelt also have refused to sign the agreement and consequently have temporarily lost their funding. Counseling agencies of 25 other municipalities in the county have agreed to the disclosure policy. TOWN OF EDMONSTON

The Edmonston Town Council at its Sept. 10 meeting began planning a Community Development Block Grant proposal. The town applies annually for the federal funds to fund its street repairs and general maintenance. Council members have not yet determined how much money the town will need. Edmonston received a $41,000 block grant last year. Block grant proposals in the county are due Oct. 5. CITY OF LAUREL

The Laurel City Council will meet at 8 p.m. Aug. 24 at City Hall, 350 Municipal Square. For more information, call 725-5300. TOWN OF RIVERDALE

The Riverdale Town Council at its Sept. 10 meeting voted to make traffic on 46th Street near Calvert Road one way southbound. Council members took the action because residents on 46th Street had complained of excessive traffic caused by the closing of Calvert Road a year ago for construction of the Metro Green Line. The traffic change will go into effect in about two weeks.

In other business, council members agreed to establish a search committee to find a replacement for former police chief Alfred T. Barcenas, who was fired Aug. 22 by Mayor Ann Ferguson. Ferguson said Barcenas was fired from the $34,000-a-year job as head of the 13-member force because she was disappointed with his management. Capt. Don Hollin was appointed acting police chief until a new head is chosen, which may take one or two months, town officials said.

Two elected officials from Poland attended the council meeting after spending the day touring Riverdale with Ferguson. The officials, members of the international group Democracy in Action, are in the United States as guests of County Executive Parris N. Glendening to observe how municipalities operate. TOWN OF UPPER MARLBORO

The Upper Marlboro Town Commission at its Sept. 11 meeting adopted an ordinance excluding any homeowner whose property tax is $2 or less from having to pay the tax. The town adopted the ordinance to avoid spending money in assessing and billing for small tax bills. Upper Marlboro's property tax rate is 65 cents per $100 of assessed value. According to town officials, there are two properties in Upper Marlboro whose tax bills have been $2 or less.