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Attention on contaminants of emerging concern known as PFAS has been growing as state and federal standards continue to evolve. Performing due diligence and drafting deal documents for transactions in this rapidly changing environment pose a variety of technical and legal challenges such as how to address PFAS in light of current ASTM Phase I Environmental Site Assessment standards.

This webinar focuses on navigating these challenges. Ramboll expert Adam Johnston, with King & Spalding's Adam Sowatzka and Brian Stansbury, discuss PFAS and applicable regulations, examine the current standard of care for environmental due diligence, and share practical strategies for managing risk in property transaction documents as well as case studies.


Adam Johnston
Principal | Ramboll
Adam has more than 20 years of experience in environmental consulting on matters of environmental due diligence, regulatory compliance, site investigations and human exposure and risk assessment. He has completed hundreds of environmental due diligence assignments, covering thousands of sites—throughout North America and abroad, in more than 30 countries—for a diverse array of industries, as well as commercial, institutional and multi-family residential properties. He has overseen soil and groundwater investigations associated with due diligence in numerous geographical locations, and under various regulatory frameworks. Additionally, he has overseen regulatory compliance reviews of several hundred industrial operations, for the purposes of due diligence and as part of detailed compliances audits.

Adam Sowatzka
Partner | King & Spalding
Adam has significant experience in assisting clients in the defense of administrative, civil, and criminal proceedings involving permitting and environmental enforcement matters at the federal and state levels.  He is also one of the leaders of the firm’s EH&S Incident Response practice.  With respect to PFAS, Adam fist handled a significant PFAS matter in North Alabama in the late 1990’s involving discharges of PFAS to the Tennessee River and the surrounding areas.  Since that time he has handled dozens of PFAS matters throughout the US.  Adam has been recognized by Chambers USA since 2011 as a leading environmental lawyer in Georgia.  According to Chambers, “Adam Sowatzka is an experienced litigator and is particularly noted for his enforcement expertise. Clients call him ‘a great communicator who is extremely knowledgeable.’” Prior to entering private practice, he was an Associate Regional Counsel with the U.S. Environmental Protection Agency’s Southeastern Regional Office and Vice President and General Counsel of a manufacturing and services subsidiary of Axel Johnson, Inc.  

Brian Stansbury
Partner | King & Spalding
Brian focuses his practice on crisis management, U.S. and international government regulatory and enforcement matters, complex litigation, and environmental-toxic tort litigation.  Brian has represented clients and managed international attorney teams in environmental counseling, product recall, and custom enforcement matters in the U.S., Europe, the Middle East, East Asia, Latin America, and Australia. Brian routinely counsels companies in the wake of catastrophic incidents and other corporate crises and brings a calm, holistic, and solutions-oriented approach to managing and reducing related enforcement and litigation liability. Brian also counsels clients on how best to prepare for or avoid crises. Brian has represented clients researching and pursuing opportunities in the Republic of Cuba, including on issues of FCPA compliance. Brian has represented numerous clients in civil and criminal matters with respect to federal, state, and common law environmental claims arising from alleged groundwater and air contamination in Montana, Florida, South Carolina, Indiana, New York, New Jersey, North Carolina, Pennsylvania, Illinois, California, and Connecticut.