The New York State Department of Environmental Conservation (NYSDEC) Division of Environmental Remediation (DER) issued a program policy focused on the overall sustainability of hazardous waste site cleanups on August 11, 2010. This DER-31/Green Remediation program policy (DER-31) was issued in accordance with 6 New York Codes, Rules and Regulations (NYCRR) Part 375 Environmental Remediation Programs. DER-31 represents one of the first government-issued green and sustainable remediation (GSR) policies in the United States. Consistent with other DER policies, DER-31's provisions are broadly considered to be an expectation/requirement. GSR experts from within AECOM's Remediation Services (RS) Practice Area developed and implemented a GSR program designed to comply with DER-31 provisions and have now broadly incorporated GSR into our New York remediation projects. Lessons learned from this experience in New York have influenced AECOM's global GSR program and implementation procedures and prompted the development of a new GSR tool (GSRxTM) for identifying and assessing GSR best management practices (BMPs), which has also been employed globally. © 2013 Wiley Periodicals, Inc.