National Physical Laboratory

EPA Method 325 fenceline monitoring

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Introducing a new passive method to monitor emissions at petroleum refineries. US Environment Protection Agency Method 325 requires refineries to continually monitor benzene at fenceline boundaries over an extended period of time.

How NPL can help you

The National Physical Laboratory (NPL) provides a complete solution for EPA Method 325 monitoring: from initial consultancy and set-up through to sample collection and analysis.

We will work closely with you to ensure you are compliant with all requirements of the regulation, and NPL will supply all the required equipment, coordinate sampling and testing, and report results - offering a complete package to save you time and money.

Why choose NPL?

  • Over twenty-five years' experience in environmental monitoring and consultancy
  • Easy to manage mail service to save you time and effort
  • World-class accredited laboratories using the highest quality instrumentation
  • Fast and reliable service
  • A world-leading National Measurement Institute (NMI)
  • Highest ratings in BTEX proficiency testing schemes for over 20 years
  • Experience in undertaking remote European and worldwide boundary fence surveys

Find out more about Method 325


Customer enquiry line: +44 20 8943 8681

Last Updated: 4 May 2016
Created: 5 Oct 2015


Please note that the information will not be divulged to third parties, or used without your permission