NY -- Standard&Poor's CreditWire 9/18/97 -- Standard&Poor's today assigned its single-`A'-plus rating to California Health Facilities Finance Authority's $90.3 million health care revenue bonds series 1997C dated Sept. 1, 1997, issued for Sutter Health. The bonds are expected to receive a triple-`A' rating based on bond insurance. The single-`A'-plus rating on Sutter Health is based on strong market position, very good balance sheet strength, and good financial performance. Proceeds from this issue will be used to refund the Berkeley Health Facilities Financing Authority's Alta Bates Medical Center series 1992A bonds, which were recently upgraded (to single-`A'-plus from triple-`B'-plus) to reflect its inclusion into the Sutter Health obligated group. Sutter Health has aggressively grown into a sizable