...NEW YORK (S&P Global Ratings) May 3, 2016--S&P Global Ratings today assigned its 'A-/A-2' issue-level rating to the Public Finance Authority's proposed issuance of about $143 million in solid waste disposal refunding revenue bonds. Payment on the proposed bonds will be payable pursuant to a proposed guarantee agreement, to be dated May 1, 2016, between the issuer of the bonds and Waste Management Inc. The bonds are expected to consist of about $38 million series 2016A-1 due 2025, $40 million series 2016A-2 due 2027, $55 million series 2016A-3 due 2029, and $10 million series 2016A-4 due 2033. All other ratings on Waste Management are unchanged, including the 'A-' corporate credit rating. The outlook remains stable. For our complete corporate credit rating rationale, see our report published Oct. 1, 2015 on RatingsDirect. RELATED CRITERIA AND RESEARCH Related Criteria + Methodology And Assumptions: Liquidity Descriptors For Global Corporate Issuers, Dec. 16, 2014 + Key Credit Factors For...