Noah Perch-Ahern is a preeminent environmental and energy attorney and maintains a national practice involving complex litigation, regulatory counsel, transactional matters, and project development.
Having not only deep knowledge across the field of environmental law but also wide-ranging experience advising clients in various practice areas, Noah employs his skills and knowledge in a variety of contexts. He has significant litigation experience and has tried jury and bench trials. At the same time, Noah regularly helps clients devise solutions to difficult regulatory problems, represents clients in administrative proceedings and enforcement matters, assists with deals and development projects, and represents clients in energy-related transactions and industrial and real estate acquisitions.
Noah has played a key role in a variety of high stakes matters, including cost recovery and tort actions involving Superfund sites, constitutional litigation, public utility litigation, appellate litigation, environmental remediation projects, portfolio deals concerning electric generation facilities, landfills, and downstream petroleum assets, development projects related to renewable energy projects and industrial expansion, and compliance, permitting, and enforcement matters concerning air quality, water quality, hazardous waste, and energy and utility regulation.
Noah has counseled clients concerning all of the major federal environmental statutes, including CERCLA, RCRA, the Clean Water Act, the Clean Air Act, and NEPA, and has also advised clients concerning various state environmental statutes and regulations around the country, including regulatory programs related to climate change and cap-and-trade, coastal regulations, Brownfield laws, water rights, and land use regulations such as CEQA. A significant portion of Noah’s work involves complex air quality matters and sophisticated regulatory challenges.
Noah’s accomplishments have been professionally recognized in Chambers USA, Super Lawyers, and Benchmark Litigation.
Publications
Tox of the Town
South Coast AQMD Aims to Keep WAIRE Mitigation Program Rollout “Simple,” But Details Still in Flux
May 14, 2026
Article
SB 1046 Highlights California’s Need for Additional Composting Capacity and Streamlined Review of Organics Recovery Projects
January 2, 2025
Environmental Partner Noah Perch-Ahern authored an article for January's issue of Waste Advantage Magazine. He discussed how California Senate Bill 1383, aimed at reducing methane and other emissions through green waste diversion, has faced challenges in implementation due to insufficient composting facilities and stringent permitting requirements under laws like CEQA. Excerpt SB 1383 was an ambitious piece of legislation that continues to make California a leader in environmental progress. However, local governments are facing challenges to comply. SB 1046 and the completion of CalRecycle’s PEIR will hopefully go a long way towards fixing those issues.
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