About Sage Institute
SII maintains a staff of multi-disciplined professionals, with established expertise in master planning, land use analysis, CEQA/NEPA documentation, biological surveys, construction monitoring, and Geographic Information Systems (GIS). We also have over 25 years of specialized experience with school facilities needs assessments, demographic projection modeling, public finance, school district asset management and public policy negotiation services.

SII maintains two offices in California: Our southern California office is located in Westlake Village and our central coast office is located in Atascadero.

Joel Kirschenstein, President
Dr. Kirschenstein, the Company President, has over 25 years of experience with successful planning, organizing, political advocacy and negotiation of public policy and regulatory compliance endeavors. In addition Dr. Kirschenstein has testified before State and Federal agencies and State and Federal Courts as an expert witness.

Jason Kirschenstein, Vice President, CPESC #5594
Jason Kirschenstein serves as the Principal Biologist for Sage Institute, Inc. (SII). Mr. Kirschenstein is highly trained and experienced in regulatory permitting and consultations, environmental impact analysis, general and special-status wildlife and vegetation surveys, mitigation planning and monitoring, and Geographic Information System (GIS) applications. Mr. Kirschenstein is also well versed in the planning process, and has successfully performed as an integral member of planning and design teams where he has provided biological and regulatory compliance insight for local agencies, utility companies, and private development projects.

David Wolff, Vice President, Certified Wetland Scientist
David Wolff serves as the Principal Ecologist for Sage Institute, Inc. (SII) and is a Certified Professional Wetland Scientist with over 30 years of professional experience.  Mr. Wolff has special expertise in both flora and fauna, including terrestrial, freshwater aquatic, estuarine, and marine environments. He is knowledgeable in many bioregions of California including Southern California coastal, inland, and desert regions, central coastal & inland areas, Great Valley, and Sierra Nevada foothills.  Along with his regional and landscape-scale resources planning experience, he is also an accomplished wetland scientist, botanist, and wildlife biologist well versed in endangered species issues.  Throughout his career, David Wolff has conducted studies, prepared reports, obtained regulatory compliance permits, monitored construction projects and, and managed projects and staff for a diverse group of projects and clients.