All federal and area county and city offices will be closed Monday, Oct. 12, in observance of Columbus Day. Virginia state offices will be open, but Maryland state offices will be closed.

Schools: All schools in Northern Virginia and the District of Columbia will be closed Monday. Schools in suburban Maryland will be open.

Mail: There will be no regular postal service Monday. Special delivery and express mail deliveries will be made.

Liquor: In Virginia, ABC liquor stores will be open. In Montgomery County, liquor dispensaries will be closed. Stores in Prince George's County and the District of Columbia are not required to close.

Refuse: In D.C., Falls Church and Alexandria, regular Monday pickups will be made on Tuesday. Tuesday collections in these jurisdictions will be made on Wednesday. In Falls Church, regular Wednesday collections also will be made on that day. In Alexandria, Wednesday pickups will be made on Thursday and Thursday collections on Friday. The District of Columbia's Supercan collections will be made on regularly scheduled days. Collections in all other areas will be made on regular schedules.

Banks: All banks in Maryland will be closed Monday. In Virginia, banks will be open. Banks in D.C. have the option to close.

Libraries: All libraries in the metropolitan area, except those in Prince George's County, will be closed Monday.

Transportation: Metrobus and Metrorail will operate on Saturday schedules on the holiday, with off-peak fares in effect all day. Metrorail will run four-car trains on all lines.

Parking: General weekday traffic regulations will not be in effect Monday. However, parking meter payments must be made and weekday parking restrictions will be in effect.