NEW YORK (S&P Global Ratings) Aug. 28, 2018--S&P Global Ratings today assigned its 'B' issue-level rating and '6' recovery rating to Covanta Holding Corp.'s proposed $334.6 million senior unsecured tax-exempt bonds. The '6' recovery rating indicates our expectation for negligible (0%-10%; rounded estimate: 5%) recovery in the event of a default. The company intends to use the net proceeds from this issuance to refinance its existing Series 2012 tax-exempt bonds issued by the Niagara Area Development Corporation and Massachusetts Development Finance Agency. Unlike the 2012 Series Notes that are being refinanced, which we rate 'BB-', the new tax-exempt bonds will not have a guarantee from Covanta Energy LLC. As of June 30, 2017, Covanta had about $2.4 billion of total