Charles CaldartCharles Caldart (Litigation Director)

Chuck completed his undergraduate studies at the University of Washington in 1970, and received his JD from the University of Washington School of Law in 1974. He earned an M.P.H. from the Harvard University School of Public Health in 1982. Chuck worked at the firm of Miles, Way & Caldart in Olympia, Washington from 1974 to 1983, becoming a partner in 1979, and specializing in civil litigation. He began working as MASSPIRG's Litigation Attorney in 1985, bringing environmental, public health, and constitutional law cases. Chuck is also on the teaching faculty at the Massachusetts Institute of Technology, and has taught environmental law courses at MIT since 1983. He helped found the National Environmental Law Center in 1990.


Josh Kratka (Senior Attorney)

Josh, 1979 graduate of Harvard University, received his JD from Northeastern University School of Law in 1984. He served as a Law Clerk for the Superior Court of Massachusetts until 1986, when he became MASSPIRG's Staff Attorney. At MASSPIRG, he advocated for environmental and consumer protection laws. Josh joined NELC's litigation staff in 1994.



Margaret Nivison (Staff Attorney)

Maggie graduated from Union College in 2009 and graduated cum laude from Georgetown University Law Center in 2017. Before joining NELC, she completed a one-year fellowship with the American Civil Liberties Union of Massachusetts (ACLUM). At ACLUM, she worked on active litigation in state and federal courts to enforce and expand constitutional protections in Massachusetts. She worked as a summer associate at K&L Gates and as a law clerk for the Public Defender Service for the District of Columbia. Before attending law school, she worked as a transplant donation coordinator for a healthcare non-profit.


Matthew Donohue (Staff Attorney)

Matt graduated in 2007 from Skidmore College, and earned his J.D. from Boston College Law School in 2012. There, he advocated for progressive constitutional principles as president of the Boston College chapter of the American Constitution Society, and provided free legal services to low-income families through the school's nonprofit legal clinic. Prior to joining NELC, Matt spent six years at a boutique litigation firm, where he represented individuals suffering from illnesses caused by toxic substance exposure. In so doing, Matt prosecuted complex lawsuits against many of the nation's largest corporations. 


Riena Harker (Paralegal)

Riena graduated cum laude and Phi Beta Kappa from Bowdoin College in 2020 with a dual degree in Biology and Government & Legal Studies. While at school, she designed a series of seminars that culminated in a service-learning trip she led to connect her peers with sustainability and food justice issues in Maine. Before starting at NELC, Riena interned for both the U.S. Environmental Protection Agency and the Environmental Health Strategy Center nonprofit, where she gained experience in environmental policy at the local and national levels.