- Alfa Environmental Remediation Services, Inc.
- Pleasanton - Site assessment, soil groundwater testing, remediation, inspection for asbestos, hazardous materials management, risk assessment, permitting, safety and training programmes, and state reimbursement services. - All Chemical Disposal
- San Jose - Hazardous waste management and transportation; site decontamination and remediation services. - Anton Geological
- Elk - Geological and phase I environmental site assessments throughout the Western U.S. - Applied Marine Sciences
- Livermore - Provides research, monitoring and assessment in marine ecosystems. - ATS Eco-Snow
- Livermore - Provides high-technology manufacturers with noncontact cleaning equipment for a broad range of cleanroom manufacturing applications. - Bayview Environmental Services, Inc.
- San Leandro - Providing asbestos abatement, lead remediation and demolition services. - Cal Inc.
- Vacaville - Providing environmental engineering, remediation and training; and general construction services. - Douglas Engineering
- Concord - Manufacturer of oil skimmers, decanters and other removal equipment for industrial waste water, storm water, and emergency spill response. - Garratt-Callahan Company
- Millbrae - Products and services for cooling towers, closed systems, boilers, steam condensate systems, potable water, and wastewater systems. - Hal Murphree & Associates, Inc.
- San Mateo - Manufacturers representative for chemical storage tanks and air pollution control systems. - Hydrocomp, Inc.
- Redwood City - Develops and distributes continuous hydrologic simulation software and provides consulting, specialising in hydrologic modelling and analysis. - International Medcom
- Sebastopol - Manufacturer of nuclear radiation detection instruments for health, safety, security, science and education. - Kellco Services, Inc.
- Fremont - Lead paint and asbestos inspections, testing, risk assesment, and consulting. - LFR Levine Fricke
- Emeryville - Management, engineering, and consulting firm offering services for air, water, land, and hazardous materials. - Mechanical Environmental Systems Analysis and Adjustment Agency (MESA3)
- San Jose - Providing HVAC testing, adjusting and balancing, and cleanroom performance testing. - Meriter Company
- San Jose - Stainless sampling canisters, portable air sampling systems, heating blankets, high purity components, assemblies and systems. - Micro Analytical Laboratories, Inc
- Emeryville - Independent laboratory, provides analyses and responsive service to the asbestos and lead abatement industry. - Mil-Ram Technology, Inc.
- San Jose - Offering sensors and controllers for monitoring and detecting toxic and combustible gases. - Ozonair International Corporation
- South San Francisco - Manufacturer of ozone systems for water treatment. - pHionics, Inc.
- Martinez - Manufacture water quality sensors and transmitters for process control, groundwater, and data acquisition of parameters such as pH, conductivity, ORP, temperature and specific ions. - Precision Sampling, Inc.
- San Rafael - Provides direct-push sampling services for site characterization and contaminant remediation. - Proud Data Service
- Berkeley - Environmental data management and presentation services with an emphasis on AutoCAD. - Sonoma Technology, Inc.
- Petaluma - Providing regional air quality and meteorological services including research, monitoring, modelling, advisory systems and policy/planning support. - Sustainable Contracting Services Inc.
- San Francisco - Provides general engineering, electrical contracting and environmental services. - Tech Rite
- Danville - Offers stainless steel furniture and supplies for cleanrooms and gown rooms. - Turner Designs, Inc.
- Sunnyvale - Manufacturer of field, laboratory, and online fluorometers, luminometers and monitors for chlorophyll measurement, fluorescent dye studies, biotechnology, and oil in water monitoring. - United Manufacturing International
- Burlingame - Supplier of quality activated carbon to filter and purify air and water and for environmental remediation cleanup. - WaterHealth International
- Napa - The maker of an ultraviolet water disinfection device.
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