Ms. Barter is an Oregon-based water lawyer and policy expert with more than a decade of combined non-profit, private sector, and federal experience. A strategic and pragmatic advisor, she has spent her career working to create balance among complex environmental, agricultural, municipal, and cultural water needs. In helping clients through wicked water challenges, Ms. Barter also draws on her background in coalition facilitation, conservation program implementation, natural resource management, and environmental science. She is a former chair of the Oregon State Bar’s Environmental and Natural Resources Section, a frequent speaker at conferences and legislative hearings

Ms. Bayer is a seasoned environmental attorney, regulatory specialist, and litigator at Tonkon Torp, where she serves as Chair of the firm’s Environmental & Natural Resources Practice Group. Her practice is focused on representing clients facing environmental issues related to regulatory compliance, site contamination, and business transactions. Clients value Ms. Bayer’s deep understanding of complex environmental challenges and her ability to provide creative solutions for the best possible outcome. She is adept at approaching her practice through a combination of science and law. No matter what issue her clients face, she puts their best interests first and provides practical advice and counsel all along the way.

Ms. Bayer has significant legal and technical experience remediating contaminated property and managing all stages of environmental litigation. She guides landowners through the appropriate steps when they suspect their property may be contaminated, assists clients with reporting obligations, works with consultants to ensure proper documentation of investigation and cleanup activities, and helps recover costs from responsible parties. Ms. Bayer also regularly assists businesses nationwide in complying with Extended Producer Responsibility laws.

She has represented clients from a variety of industries at some of the largest Superfund sites in the country. Ms. Bayer has experience obtaining stormwater, wastewater, and air emissions permits, negotiating settlements and resolving non-compliance issues with regulatory agencies, and transferring permits to new entities following change in ownership. When buying or selling a piece of potentially contaminated property, understanding environmental risk is key to avoiding major issues down the road. She works with environmental consultants and transactional attorneys to identify and appropriately shift environmental risk so that her clients can close their business transactions with peace of mind. 

Mr. Greene represents clients on matters related to the clean energy transition in the Northwest, providing advice to nonprofits, trade associations, and electricity generators, among others. Prior to joining Sanger Greene, Mr. Greene spent several years at Renewable Northwest, finishing as the organization’s Deputy Director. In that role he supervised work on regulatory matters such as utility resource planning and procurement, and on policy matters including clean energy legislation and renewable energy siting. He has engaged with all Northwest investor-owned utilities’ recent integrated resource plans, worked on the development of Oregon’s and Washington’s competitive procurement rules, helped to negotiate utility voluntary renewable energy programs, participated in writing and passing Oregon’s 100% clean electricity law (HB 2021), engaged deeply with the implementation of Washington’s Clean Energy Transformation Act, and advocated before the Federal Energy Regulatory Commission on matters related to Open Access Transmission Tariffs, particularly with regard to interconnection processes. He also helped to write and pass a suite of clean energy siting laws in Oregon and Washington, has served on several Oregon and Washington agency advisory committees relating to energy siting, and has authored amicus briefs on siting and permitting law before the Oregon Court of Appeals and Oregon Supreme Court.

Before working at Renewable Northwest, Mr. Greene served as a staff attorney in the Providence, Rhode Island office of the Conservation Law Foundation, where he appeared before the Rhode Island Public Utilities Commission and Energy Facility Siting Board, as well as various state and federal courts; earlier in his career, he worked in the Law Department for the City of Providence, Rhode Island and represented indigent clients at Rhode Island Legal Services. Mr. Greene earned a B.A. in Latin from Carleton College and a J.D. from Roger Williams University, graduating cum laude from both institutions and finishing law school with an award for Natural Resources Law. Following law school, he clerked for the Honorable O. Rogeriee Thompson on the United States Court of Appeals for the First Circuit. More recently, Mr. Greene has completed significant coursework in Electrical Engineering at Portland State University. 

Mr. Jaeger’s teaching includes graduate and undergraduate courses in environmental and resource economics, institutional economics, and sustainability. His research has a policy focus in the areas of environmental and resource economics, agriculture ,and sustainability with an emphasis on interdisciplinary research on human-natural systems. His work has involved the economics of water, climate change, fisheries and conservation, land use and land use change,  environmental taxation, the “environmental Kuznets curve”, and agriculture. Previously he taught for 12 years at Williams College. He has been a Visiting Fellow at the European University Institute, Florence Italy in 2016, a Fulbright Scholar at the University of Venice, Italy, and the University of Strasbourg, France 2023-24. He has also taught at the University of Washington and the University of Oregon.

Growing up in southwestern Oregon, Mr. Matteo spent seven summers from high school through college working on a blueberry farm near Roseburg. This work experience, his rural background, and his coursework at OSU led him to pursue a legal career serving the natural resource industries. Before attending OSU, Mr. Matteo served as a state officer for the Oregon Future Farmers of America (FFA) Association, and he continues to be involved with the FFA in Oregon.

Mr. Sanger’s legal and consulting practice focuses on energy, administrative, and public utility law. He represents energy trade associations, municipalities, electric cooperatives, irrigation districts, end-use industrial and commercial consumers, investor owned natural gas and water utilities, and renewable and cogeneration electricity producers. Mr. Sanger advises hydro, biomass, geothermal, wind, solar, cogeneration, and other electricity generators on a wide variety of transactional matters, including negotiating power purchase agreements, interconnection agreements, wholesale power sales, resource development and sales, and other matters. He has a lengthy background representing end[1]use industrial, commercial, and irrigation customers in all facets of retail rates and service quality. Mr. Sanger represents clients in energy and utility matters before state and federal courts, state public utility commissions, the Federal Energy Regulatory Commission, and the Bonneville Power Administration. Mr. Sanger is also an adjunct instructor at Lewis and Clark Law School, and in Portland Community College’s Paralegal Program. Mr. Sanger graduated from Lewis and Clark Law School in Portland, Oregon in 2000 with cum laude honors and an Environmental Law Certificate, and from World College Institute of New College of California in 1995 with a bachelor’s degree in the Humanities with an emphasis in International Environmental Studies.

Ms. Siltanen is a land and natural resources attorney, with a practice focused on land use, permitting, and water rights law. She helps commercial, industrial, and residential clients entitle their projects and defend their land use entitlements against challenges before the Oregon Land Use Board of Appeals and Oregon Court of Appeals. She also helps water suppliers and water users acquire, change, and protect their water rights. Ms. Siltanen has counseled private individuals, clients in natural resources industries, including agribusinesses and energy companies, and municipal and special district water providers on matters related to water supply and compliance with water right laws and regulations. She also regularly advises property owners and prospective buyers regarding water rights associated with agricultural, commercial, and industrial properties.