RestCon Environmental provides indoor air quality investigations for both residential and commercial clients throughout the Sacramento and Bay Areas. In addition to onsite investigations, RestCon provides virtual consultations to clients all over the world. We are unique in that we specialize in working with healthcare professionals on medically important investigations and have a clientele that is predominantly doctor-referred. RestCon offers one of the most innovative approaches to mold testing, with two of the most trusted environmental consultants in the industry.

Our Indoor Environmental Consultants

John Banta, CIH, B.A., Environmental Health Scientist

John Banta, CIH, B.A., Environmental Health Scientist

John is certified by the American Board of Industrial Hygiene as a Certified Industrial Hygienist with a Bachelors Degree in Environmental Health Science and 35 years of experience in Indoor Environmental Quality. For the last 27 years John has specialized in mold and water damage problems in buildings. He conducted investigations and supervised crews in water damage, flood and mold remediation throughout the United States. He trained workers in restoring water damaged buildings, contaminated water clean-ups, mold remediation and worker health and safety programs throughout the United States and Canada as well as England, Australia and New Zealand. John currently specializes in medically important investigations with 85% of his clients referred to him by their physician.

John is the co-author of the book titled Prescriptions for a Healthy House, 4th Edition: A Practical Guide for Architects, Builders and Homeowners and author of Extreme Weather Hits Home, Protecting Your Buildings from Climate Change. John’s upcoming book Mold Controlled is about recovering buildings from mold and other water damage organisms, finding, avoiding and fixing problems.


Boni Passmore, Ph.D., Environmental Scientist

Boni Passmore, Ph.D., Environmental Scientist

Boni has a doctorate in Biochemistry and Biophysics from the University of California at Davis, with over 40 years of experience conducting biological research, including research in the field of plant pathology. Dr. Passmore has designed and conducted several independent research projects, trained graduate students, and visiting scientists, and written and edited articles for peer reviewed scientific journals. For the last 20+ years, Boni has served as RestCon Environmental’s Lab Director in addition to conducting field investigations to determine cause and extent of biological, chemical, and smoke contaminants in residential and office buildings. Boni has been instrumental in the design and implementation of sampling strategies, as well as the development of reports and remediation protocols. Boni currently specializes in medically important investigations with most of her clients being referred to her by their physician.