The Town of North Hempstead is considering adopting a law that would further restrict the use of motorized leaf blowers during certain months of the year. The June 16 public hearing drew a large crowd that overflowed the town board room, a crowd that included a huge group of gardeners and landscapers.

According to the proposed legislation, the law is being considered because the town board has received numerous complaints concerning the noise and air pollution caused by leaf blowers, machines that many feel are unnecessary, except, possibly, for spring and fall clean-ups. The proposal is to ban the use of such leaf blowers from May 15 to Sept. 30.

Opening the hearing, Town Supervisor May Newburger first stated that there would be no decision at the hearing. The hearing would be continued until July 14, in order to allow for more research and further input. The Supervisor also asked that each side present only two or three speakers.

First, those against the legislation spoke, starting with Pat Vogues, president of the Nassau/Suffolk Landscape Gardeners Association, a group of 1500 members with over 300 ''hard working, taxpaying'' members working in North Hempstead. ''We are here because we are very, very concerned,'' he said. Mr. Vogues stated that his association had worked out agreements with many towns and he is certain that this can be accomplished in North Hempstead

When Town Councilman Anthony D'Urso asked if any new research would be presented, Mr. Vogues assured that they would be prepared with anything requested by July 14.

Town Councilman Angelo Ferrara assured that the board wants to ''protect residents and businesses.''

Albert Callabrese, vice president of the North Hempstead Contractors Association, expressed confidence that ''working together in concert,'' they would be able to develop a plan that would be acceptable to everyone.

Gardener Andrew Handler reported that he conducts his own seminars each year, and he would like to be able to force companies to make quieter blowers.

When asked if the town had done an environmental impact study, Supervisor Newburger said that they had not, but that the town had looked at other such EIS documents in other areas, and the current blowers do go beyond the decibel where the noise is ''destructive to people.'' She also said that California claims that leaf blowers even contribute to smog.

When one gardener questioned whether the town had conducted an economic study, the Supervisor said that she had talked to officials in a number of municipalities where leaf blowers were restricted and all said that the local gardeners still work in the area.

However, one gardener did explain that using a broom, instead of a blower, would take ''1000 times longer.'' He spoke of restrictions hurting gardeners economically---with health plans, ''feeding the kids,'' and sending children to college. ''This is America; we have a right to earn money,'' stated Mr. Callabrese. His claim was that the proposed restrictions would restrict gardeners' earning power.

Representing Echo, the primary manufacturer of two-cycle engines, George Olsen reported that the company has quieter, 65 decibel blowers. He said that in Huntington, the law calls for 70 decibels, and Echo has that too. Echo, he said, is phasing out loud blowers. As for polluting the air, Mr. Olsen said that all such machines must pass EPA testing.

Port Washington resident Steve Schulman said that he was speaking for over 300 residents, and they all think that the proposed law is unfair, and ''punitive.''

Speaking in support of restricting months of use for leaf blowers, Eric Pomerantz said that ''other towns'' report that the restrictions do not cut into incomes. He also dealt with the pollution issue, and he added that loud noise from the gardening machinery ''...will cause gardeners to go deaf, because otherwise they would go insane.''

Great Neck Estates Mayor Larry Nadel, whose village has passed leaf blower restrictions, said that if he knew 18 months ago what he knows now, he would have passed the law immediately. He said that the Estates law has been in effect ''one summer and two days,'' and the village is ''quiet and clean...beautiful and pristine as ever.'' Mayor Nadel also noted that the law has been followed ''with the least amount of enforcement...the landscapers conformed like gentlemen...prices were not raised because they worked smarter.''

New Hyde Park resident Alan Franklin spoke in support of the legislation, calling the leaf blowers ''a public nuisance and a health hazard.'' He spoke of the machines coming with instructions for operators to use ear protection, and he spoke of the leaf blowers blowing ''contaminants'' into the air. Mr. Franklin asked that the leaf blowers be banned 12 months of the year.

Mr. Franklin and Mayor Nadel also commented about the frequency (whistle) of the sound, and not just decibels.

When Councilman James O'Connor questioned the noise of other machinery such as power mowers, Supervisor Newburger said that they are now trying to address what most people find severe and intrusive, and so they started with the power blowers.

The hearing was continued until July 14.