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Business Details
40 Years
experience
Environmental Health Testing Services in Hayward, CA
Established in 1986, we are a leading environmental health consulting firm specializing in asbestos, lead, and mold testing. Our team of certified professionals delivers accurate assessments and actionable reports to residential and commercial clients across Northern California. With over 30 years of experience, we maintain industry-leading accreditations and prioritize transparency, scientific rigor, and client education.

Our founders pioneered asbestos certification programs and have served as expert witnesses in environmental cases. We operate state-accredited laboratories, adhere to Cal-OSHA and EPA standards, and focus on empowering clients with clear, actionable data to address hazardous materials safely.
Services
Asbestos Testing Lead Inspection Mold Detection Environmental Consulting Sample Analysis
Details
  • Year established: 1986
Highlights and features
  • Certified consultants with 30+ years of environmental testing experience
  • NVLAP-accredited laboratory partnerships for accurate sample analysis
  • Transparent reporting with actionable remediation recommendations
  • Pioneers in asbestos certification programs and regulatory compliance
  • Serving Northern California's residential and commercial sectors since 1986
Associations and certifications
  • NVLAP
  • DPH
What people say
High quality inspection Expertise and integrity Patient explanations Actionable reports Professional team
Services
Asbestos Testing
Our certified consultants conduct comprehensive asbestos inspections using EPA-compliant methods. We collect bulk samples for PLM analysis in NVLAP-accredited labs, providing detailed reports with abatement recommendations. Services include commercial building assessments, residential testing, and regulatory compliance documentation.
Lead Inspection
State-certified inspectors perform lead paint hazard assessments using XRF technology and lab-confirmed sampling. We identify lead sources in pre-1978 structures, generate risk assessment reports, and develop mitigation plans for residential and institutional properties across California.
Mold Detection
Certified inspectors use moisture mapping and air sampling to identify mold growth. We analyze spore counts in DPH-accredited labs, differentiate between allergenic and toxic species, and provide remediation protocols for residential and commercial properties affected by water damage.
Sample Analysis
We coordinate chemical analysis of environmental samples through partnered laboratories. Services include PLM for asbestos fibers, flame atomic absorption for lead content, and microbial culturing for mold identification. Results are delivered with plain-language interpretations within 3-5 business days.
Environmental Consulting
Our consultants develop asbestos management plans, lead abatement specifications, and mold remediation protocols. We provide expert witness testimony, regulatory compliance guidance, and training programs for property managers and construction professionals across California.
People
Ryan T Compton
President & CEO
Certified Asbestos Consultant with over 10 years of environmental inspection experience. Oversees daily operations and technical fieldwork for 1,000+ completed projects. Maintains active involvement in California regulatory developments.
Scott Compton
Founder
Industry pioneer with 50+ years in environmental safety. Founded HMA in 1986 and developed UC Berkeley's asbestos certification program. Recognized expert witness in 40+ environmental cases with extensive legislative advisory experience.
Questions
What hazardous materials do you test for?
We specialize in asbestos, lead-based paint, and mold testing. Our services include laboratory analysis, on-site inspections, and regulatory compliance documentation for residential and commercial properties.
How long has HMA been in business?
Hazardous Materials Assessment has provided environmental consulting services since 1986. Our team collectively holds over 80 years of industry experience with continuous regulatory compliance updates.
Are your consultants certified?
Yes, our consultants hold California state certifications as Asbestos Consultants and Lead Inspectors/Assessors. We maintain active participation in continuing education and regulatory advisory committees.
What areas do you serve?
We primarily serve Northern California including the Bay Area, Peninsula, Marin, South Bay, and Central Valley regions. Sample analysis services are available statewide through our lab network.
How quickly do you provide test results?
Asbestos and lead test results are typically available within 3-5 business days. Mold analysis follows similar timelines, with written reports issued the same day lab results are received.
Do you offer emergency testing services?
While we don't provide 24/7 emergency services, we prioritize urgent cases and offer expedited sample analysis options for time-sensitive projects and regulatory deadlines.
Reviews (1)
Portia Monberg
Jun 27, 2020 Report
Fantastic service. I really can't say enough good things about Ryan from HMA. He came out to our house and did an extremely detailed inspection. He was so patient with all of my questions. I never felt rushed and he is incredibly knowledgeable. His final report was very detailed, professional and easy to understand. So happy I found him to help me.