The county Board of Zoning Appeals has approved requests in two cases.

Genstar Stone Products Co. of Hunt Valley requested a conditional use to extract limestone and a variance waiving the setback requirements of 200 feet at 1060 Medford Road.

The board approved the request because Genstar owns the surrounding property and the extraction of limestone is "reasonable and appropriate."

Larry R. Green requested an enlargement of an existing auto repair shop, classified as a non-conforming use, by construction ofa detached garage to be located to the rear of the shop.

The board approved the request, saying that the shop predates the adoption ofthe zoning ordinance in 1965. Also, previous enlargements of the business had been conditionally authorized.