3275 Walnut Avenue
Signal Hill, CA 90755

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Advanced Technology Laboratories (ATL), DBA of Environmental Treatment & Technology, Inc. has 25 years of experience in environmental testing of Air, Water, Soil, and Sediments for Priority Pollutants using EPA Methods, APHA Methods, and ASTM Methods as approved by the Code of Federal Regulations. ATL is accredited by the following accrediting agencies:





  • DBE – California Unified Certification Program and Caltrans
  • MBE – Caltrans, Public Utilities Commission
  • SBE – California Department of General Services
  • Soil Permit – US Department of Agriculture



  • “Excellence with Integrity” – Excellence is not an act but a habit and Integrity is not just a moral and ethical standard, but a way of life that must be maintained.



  • “To become our Client’s Indispensable Project Team Member for Testing Services”.



  • Customer Satisfaction through the delivery of Exceptional Quality and Unexcelled Customer Service - your PARTNER for quality environmental testing.
  • Provide a Safe and Comfortable working environment for ATL members.
  • Promote Team Member Excellence and work Satisfaction.
  • Ensure sustained growth through training and diversification of our capabilities.


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