Disclaimer

Last updated July 2026.

Not professional advice

The information on this website is general in nature and is not engineering, environmental, legal, financial or medical advice for any specific property or situation. Radon, vapor intrusion and methane conditions vary from building to building and cannot be assessed from a web page. Do not make decisions about a specific property based on this site alone.

Health information

Statements about radon and health risk reflect published positions of the U.S. Environmental Protection Agency, the California Department of Public Health and the Los Angeles County Department of Public Health. We are a contractor, not a health authority. For health questions, consult those agencies or a physician.

Regulatory currency

Lender policies, agency requirements and building codes referenced here change, sometimes quickly. The multifamily radon requirements described on this site changed materially in 2025 and could change again. Always confirm current requirements directly with the agency, lender, or jurisdiction with authority over your project.

Testimonials

Testimonials appearing on this site are illustrative composites intended to describe typical engagements, published pending verified customer reviews. They do not depict specific identified customers and results described are not a guarantee of outcome on any other project.

Pricing

Prices and ranges shown are estimates and are not offers. Actual pricing follows a site visit and appears only in a written proposal.

External links

Links to government and agency websites are provided for reference. We do not control that content and are not responsible for it.

Contact

Call (213) 845-6500 with any questions about this disclaimer.