Stephen Mikesell, M.A., is a senior architectural historian managing large consulting projects in New Mexico, Washington and Ohio. His experience includes overseeing complex survey and evaluation studies and handling the most complex Section 106 compliance efforts. He has also prepared analytic tools for historic bridges and military properties in California and is author of the book Historic Highway Bridges of California. Previously, Mikesell was the deputy state historic preservation officer in California and a partner in JRP Historical Consulting Services.

Antero Rivasplata is a technical director who specializes in CEQA compliance and general plan preparation with ICF International. He has worked as either project manager or CEQA adviser on a variety of projects, including CEQA-NEPA documents for transportation projects, EIRs for general plan updates and NEPA documents for federal and local agencies. He is a co-author of the 2012 update of the CEQA Deskbook published by Solano Press, a member of the American Planning Association, the American Institute of Certified Planners and the Association of Environmental Professionals, as well as the editor for its quarterly publication Environmental Assessor.