Arnold & Porter

Arnold & Porter is widely renowned for market-leading expertise at the district, trial, and appellate court levels with coverage across Washington DC, New York, and Los Angeles, among others. The group is notable for its climate change and energy transition practice, with work ranging from greenhouse gas emissions to advising on the regulation of automobiles. The practice is co-led from DC by Jonathan Martel, who chiefly focuses on the Clean Air Act, and Allison Rumsey, a key name at the firm for clients on regulatory enforcement actions, class actions, and citizen suit lawsuits at the state and federal level. The firm has a number of key practitioners based out of the DC office, including Michael Daneker, who handles a wide array of disputes from CERCLA litigation to natural resource damage claims, and Elissa Preheim, who has deep knowledge of PFAS and toxic tort matters. Another name in the DC office is Lauren Daniel, an expert on CERCLA, Oil Pollution Act, and Clean Water Act. Splitting his time between New York and New Jersey, Jeffrey Talbert has been active advising on contaminated sites nationally, with previous experience on CERCLA and Superfund sites.