(Editor's note: In the press release dated Jan. 27, 2000, KeySpan Gas East Corp.'s medium-term notes were incorrectly referred to as a medium-term note program. The $400 million medium-term notes are a drawdown from the $600 million shelf registration senior unsecured debt securities that was assigned a preliminary rating in the same press release. A corrected version follows below.) NEW YORK (Standard&Poor's CreditWire) Jan. 28, 2000--Standard&Poor's today assigned its preliminary rating of single-'A' to KeySpan Gas East Corp.'s $600 million Rule 415 shelf registration senior unsecured debt securities. In addition, Standard&Poor's assigned a final rating of single-'A' to KeySpan Gas East's $400 million fixed-rate medium-term notes that are being issued from this shelf registration.