The following are among requests scheduled to be heard July 22 at a public hearing of the District of Columbia Board of Zoning Adjustment. The meeting will begin at 9 a.m. in Room 9 of the District Building, 1350 Pennsylvania Ave. NW. For more information, call 727-6311.

NORTHEAST

U ST., 132 -- A special exception requested by Chi Mo Yang to change a restaurant with seating to a takeout delicatessen in a residential zone.

NANNIE HELEN BURROUGHS AVE., 4810 -- Variances requested by the D.C. Department of Housing and Community Development to build a medical and office building on vacant land in a mixed-use zone.

NORTHWEST

Q ST., 2230 -- Variances requested by William E. Brock to build an apartment atop an existing garage in a residential zone.

MACARTHUR BLVD., 4434 -- A special exception requested by MACMED Limited Partnership to construct a medical building in a residential zone.

MORRISON ST., 3725-3729 -- A special exception requested by Safeway Stores Inc. to continue to operate an accessory parking lot in a residential zone. Under District regulations, parking lot permits must be renewed periodically.

ONTARIO RD., 2805 -- Variances requested by Mary Lee Stein and Mark Rosenman to build an addition to a single-family house in a residential zone.

25TH ST., 914 -- Variances requested by Milton Carrow to build an addition to a single-family house in a residential zone.

SOUTHEAST

MARTIN LUTHER KING JR. AVE., 3501 -- A special exception requested by Resurrection Baptist Church to operate a child development center for 50 children, ages 2 to 15 years, in a residential zone.