Mark D. Harrison

Mark D. Harrison is an attorney at Harrison, Temblador, Hungerford & Guernsey LLP in Sacramento, California. His practice focuses on natural resource development, mining, land use permitting, CEQA, NEPA, and air and water quality regulation. Harrison represents mining, land development, and construction companies, along with public entities and trade associations. He helps clients navigate complex regulatory processes, obtain project approvals and permits, and defend important land use and natural resource rights when disputes arise.

Harrison earned his J.D. from the University of California, Davis School of Law in 1989 after receiving a B.A. with honors in Rhetoric from the University of California, Berkeley in 1984. His education provided a foundation for legal analysis, regulatory advocacy, and litigation. This background supports his work on environmental review, governmental approvals, vested rights, and other matters involving the intersection of land use regulation, natural resource development, and environmental law.

Harrison has substantial experience helping mining and construction interests obtain reclamation plan approvals, operating permits, environmental clearances, and state and federal authorizations. He served as lead counsel in Hansen Bros. Enterprises v. County of Nevada, a California Supreme Court case involving vested mining rights. He has also represented local governments in land use matters and trade organizations in litigation involving air toxics regulation, handling cases from early planning and administrative proceedings through court resolution.

Mark D. Harrison regularly speaks at mining and trade association conferences on water quality, air regulation, vested mining rights, and dispute resolution. He has also written on land use permitting, Proposition 65, environmental insurance coverage, and toxic cleanup. Harrison participates in CalCIMA, the National Stone, Sand & Gravel Association, the State Bar of California’s Environmental Law Section, and other professional groups, combining regulatory knowledge with long-standing involvement in California’s mining and environmental law community.

Law Office Affiliations

• Attorney, Harrison Temblador Hungerford & Guernsey
• Member, State Bar of California, Environmental Law Section
• Member, Sacramento County Bar Association, Environmental Law and Administrative Law Sections
• Member, Federal Bar Association

Licensed State

• California

Education

• University of California, Davis, School of Law
  Juris Doctor (JD)
• University of California
  Bachelor of Arts (BA)