Casandra Williams, CAC, DPH, CIEC, CEICC

CEO, CFO, Owner

Professional Experience

Casandra Williams, co-founded A-Tech Consulting, Inc. in 2002, as the Chief Financial Officer and business development administrator. Throughout her tenure at A-Tech Consulting, Inc. Ms. Williams has continued her education and development in the environmental field and has obtained numerous certifications and accreditations in the industry. Ms. Williams has managed thousands of projects including; HUD level inspections, airport soundproofing inspections, AHERA school reinspections, volatile organic compound testing, carbon monoxide mitigation, radon testing, construction safety and health management, hospital related infection control in construction management, confined space permitting, water loss restoration monitoring and fire burn-out restoration management.

Ms. Williams’ current focus is on hospital related infection prevention and control. Her prior experience in the hospital industry gives her an inside familiarity with infectious control issues and is a nationally ACAC-Certified Environmental Infection Control Consultant. She has extensive experience with creating Infection Control Risk Assessments (ICRA) and implementing them for best practices for both routine hospital operation and hospital construction projects. Ms. Williams understands the growing concern with nosocomial infection, including; Legionella pnuemophelia, MRSA, Tuberculosis, Pneumonia and mold exposure related illnesses and the best practices that need to be implemented to prevent outbreaks. Ms. Williams’ multi-dimensional approach to environmental projects and her expansive knowledge base, allows her to provide clients with superior quality and depth of service that is scarce in the environmental industry.


  • Business Administration/Business Development
  • Client Relations/Accounts Management
  • Project Management/Monitoring
  • Infection Control Risk Assessments, Protocol Development and Monitoring
  • OSHA Safety Training and Safety Planning
  • Radon Measurement Provider
  • Asbestos, Lead and Mold Management Plans and Operation and Maintenance Manuals
  • Environmental Surveys/Inspections (Asbestos/Lead/HAZMAT)
  • Emergency Response Plans
  • Microbial and Indoor Air Quality Investigations
  • Indoor Environment Quality Assessments

Certifications and Registrations

  • Council-Certified ACAC Indoor Environmental Consultant #1306023
  • Council-Certified ACAC Environmental Infectious Control Consultant #1404017
  • AARST-NRPP and California Registered Residential Measurement Provider-Radon #109102
  • Certified Asbestos Consultant (CAC) # 05-3892- California Occupational Safety & Health Administration
  • Certified Lead Project Monitor #3671-Department of Public Health
  • Certified Lead Inspector/Assessor-#3671-Department of Public Health

Short Courses / Symposiums

  • Certified AHERA Building Inspector
  • Certified AHERA Building Management/Planner
  • Certified AHERA Project Designer
  • Certified Competent Person/Advisor for Practices & Procedures in Asbestos Abatement
  • Certified Lead Paint Inspection System & Radiation Safety on Radiation Monitoring Device
  • NIOSH 582– Air Fiber Analysis
  • Mold Remediation/Inspection Certification – 40 Hours Intensive Training
  • Certified Confined Space Supervisor
  • OSHA 30 Hour Construction Safety Training
  • Thermography Training for Building Inspections


  • Institute for Real Estate Management-Orange County Chapter (IREM)
  • Southern California American Industrial Hygiene Association (SCAIHA)
  • California Society for Healthcare Engineering, Inc. (CSHE)
  • National Association of Women Business Owners-Orange County Chapter (NAWBO)
  • National Association of Women in Construction-Orange County Chapter (NAWIC)