The following were among actions taken at Tuesday's meeting of the Montgomery County Council. For more information, call 251-7900.

SILVER SPRING DEBATE -- The council agreed to postpone all discussion of the future of downtown Silver Spring until September. At a breakfast preceding the council session, Council President Rose Crenca urged County Executive Sidney Kramer and the council to delay discussion of plans for a major redevelopment project until citizens' concerns could be fully heard.

Developer Lloyd Moore has proposed a $250 million commercial-residential project at Georgia Avenue and Colesville Road. But civic groups have objected, citing the possibility of increased traffic.

By law, the County Council must approve a new growth policy by June 30, but Crenca said that "it looks suspicious" if the council takes action when many people are away on summer vacation. The Silver Spring issue is among the most controversial aspects of the policy. The council plans to approve the policy on time, but is expected to amend it after decisions on Silver Spring.

The public debate over Silver Spring has centered on traffic problems and the preservation of Art Deco structures.

The county's Adequate Public Facilities Ordinance prohibits officials from approving development that would outstrip services, including roads. The annual growth policy spells out the criteria and procedures to be used in testing development proposals for the adequacy of public facilities.

RADON TESTING -- Following the introduction last week of her bill requiring that old and new houses to be tested for radon, Council President Crenca introduced a resolution urging County Executive Kramer to have all public buildings in the county tested.

In the resolution, Crenca also called for immediate steps to be taken to correct any "undesirable" radon levels discovered by the tests. Crenca called for testing to start in the elementary schools.

Radon, which is produced through the decay of uranium, emanates from soil and rock and can enter a building through small cracks and openings in concrete or wall-floor joints. Health experts say that long-term exposure to the radioactive gas is associated with a risk of lung cancer.

Resolutions are not enforceable as legislation, but are intended to send a message to the county executive about the panel's stance in an issue.

Among other proposals included in Crenca's resolution: Consider offering free radon testing of low-income housing. Assign to the county Department of Environmental Protection the role of coordinating county efforts on radon. "See that appropriate action is taken" to ensure that all new public construction incorporates improvements to assure "low" radon levels.