Trusted Source for Environmental Testing Since 1979
From emissions testing to landfill well monitoring to fenceline monitoring: ESS has your environmental testing needs covered
Partners in Industrial Environmental Maintenance
ESS’ environmental maintenance contracts can help your facility with anything from CEMS maintenance to leak checks and tuning
Global Solution Provider
With offices across the globe, our multilingual staff is ready to assist
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Our Services

ESS is a full-service environmental consulting agency specializing in environmental air testing and control since 1979. With offices across the globe, our multilingual staff can help you tackle even your most challenging environmental concerns. Our international insights give ESS the industry edge, allowing us to adapt to a changing industrial landscape.

Air Quality Measurement & Engineering

  • Emissions Testing / Stack Testing
  • Environmental Air Testing
  • Ambient Air Monitoring
  • Indoor Air & Industrial Hygiene
  • Remediation
  • Forensic Analysis
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Industrial Maintenance & Tuning

  • CEMS/CAMS Integration & Maintenance
  • Boiler Tuning
  • Part 60 & Part 75 Audits
  • Opacity Audits
  • LDAR
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Environmental Program Reporting

  • ERT & CEDRI Reporting 
  • ECMPS XML EDDs
  • e-GGRT
  • CEMS Monitoring Plan Review 
  • Third-Party Stack Test Report Review

Industry News

Drinking Water Contaminate List to Include PFAS

On July 12, 2021 the EPA published a draft list of current drinking water contaminants that may occur in public water systems and are not currently regulated. The Draft Contaminant Candidate list 5 (CCL 5) includes three chemical groups: per- and polyfluoroalkyls substances (PFAS), cyanotoxins, and disinfection byproducts (DBPs).

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Opacity Audits and Preventative Maintenance

ESS is the experienced team when it comes to source emissions whether you need stack testing, monitoring systems maintenance and audits, or monitoring and control equipment commissioning. For more than 40 years ESS has provided annual opacity audits by 40 CFR 60 Appendix B Performance Specification 1 (40CFR60 PS-1).

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EPA to Release National Air Toxics Data Annually

Since 2002 the EPA has released the national air toxics data and risk assessment every 3-4 years. The goal of this change to policy announced on June 23rd, 2021 is to provide communities with more complete information about their air quality in a timely manner.

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Industries Served