Mr. Negrón-Navas has been active in environmental law since 1978, when he developed and chaired the Environmental Practice Group for one of Puerto Rico´s major law firms.  His extensive experience, knowledge of the law, understanding of how administrative agencies work, and his negotiation skills help clients manage and mitigate risk and liability. His practice extends to all areas of federal and state environmental laws and regulations.

Mr. Negrón-Navas has successfully negotiated multiple permit and enforcement action cases with the Environmental Protection Agency (EPA) pertaining to CWA, CAA, RCRA, CERCLA, and with the Puerto Rico Environmental Quality Board (EQB) pertaining to the Puerto Rico Environmental Public Policy Act and the regulations promulgated thereunder.

He has represented multinational companies in land acquisitions, environmental impact reviews, construction, operations, expansions, consolidations and divestitures. He has ample experience on the environmental permit and liability implications of asset and stock purchase acquisitions.

Mr. Negrón-Navas has experience counseling corporate clients, industrial firms, real estate developers, government entities, lenders and financial institutions.  He has advised a diverse number of businesses, including chemical, pharmaceutical, manufacturing, electronics, food processing, printing, brewing, rum distilling, petroleum, energy, and waste management. He has advised developers, operators and suppliers in the electric energy industry on renewable energy. He has counseled public and private power producers, energy-focused financial institutions, a private water utility and represented a consortium of industries in the creation of a private public partnership that provided for the financing, design, construction and operation of a regional secondary wastewater plant.  

Mr. Negrón-Navas is the Editor-in-Chief of the three editions of the "Puerto Rico Environmental Law Handbook", published by Government Institutes, Inc., and the “Guidelines for Compliance with Environmental Law in Puerto Rico”, published by the Puerto Rico Manufacturer’s Association.