NY -- Standard&Poor's CreditWire 3/10/98 -- Standard&Poor's today assigned its single-'B' rating to Tucson Electric Power Co.'s, a wholly-owned unit of unrated UniSource Energy, aggregate $200 million of unsecured debt, issued by the Industrial Development Authority in Apache County, Ariz. The proceeds are expected to refund the aggregate $200 million of pollution control revenue bonds 1981 series A and B. The bonds are issued in three series as follows: -- $83.7 million pollution control revenue bonds 1998 series A, due March 1, 2028; -- $99.8 million pollution control revenue bonds 1998 series B due March 1, 2033; and -- $16.5 million industrial development revenue bonds 1998 series C due March 1, 2026. The company's corporate credit
