On the day that lawyer Stanton J. Gildenhorn will clean a park in Rockville, Montgomery County Council member Bruce Adams will plant 1,000 trees and Betty Mae Kramer, the wife of the county executive, will sing for residents of a nursing home.

Those activities are part of a community service day to encourage volunteerism being planned for Oct. 17 by a newly formed organization of civic, business, religious and government leaders.

"With our county growing and with more and more families having two members in the work force, it is harder and harder to get volunteers to help in the work of the community," said Kramer, wife of County Executive Sidney Kramer and chairwoman of the nonprofit group that was announced yesterday at a Rockville news conference.

The Montgomery County Community Service Partnership Inc. is the idea of council member Adams, who described it as "a support group for volunteers." The group has a paid coordinator and a board of directors of leading citizens and it will identify and publicize major areas where residents can contribute community service, Adams said. The group is not intended to replace any existing organization, he said.

One reason people with families often don't volunteer is that both parents work and they want to spend their free time with their children, Adams said, "so why not develop some projects where whole families can be involved. It would be good for the community and it would be good for the families."

The group also hopes to establish a volunteer center where organizations could share such things as copying machines or phones. Adams also sees the group as an "issues think tank" that can come up with answers to problems.

As its premier initiative, the partnership will sponsor what it hopes will be an annual Community Service Day on Oct. 17, Kramer said. She said that more than 1,000 volunteers will join in.