NEW YORK (Standard&Poor's CreditWire) Oct. 28, 1999--Standard&Poor's today assigned its double-'A' rating to Oak Park Village, Ill.'s $5.5 million GO corporate purpose bonds series 1999 dated Nov. 1, 1999, due Nov. 1, 2002-2009. The bonds are scheduled to sell Nov. 1, 1999. The rating is based on the village's: -- Participation in the Chicago metropolitan area's deep and diverse economy, -- High wealth levels, -- Strong finances with good reserves, and -- Moderate debt burden. Oak Park (population 54,600), located eight miles west of downtown Chicago, is a home-rule community. Founded at the end of the 19th century and incorporated in 1902, the village is 4.6 square miles in area and is landlocked by Chicago on