Mercury Testing - EPA Method 30b

EPA Method 30B is a procedure for measuring total vapor phase mercury (Hg) emissions from coalfired

combustion sources using sorbent trap sampling and an extractive or thermal analytical

technique. Method 30B is designed to measure the mass concentration of total vapor phase Hg in flue gas, including elemental Hg and oxidized forms of Hg, in micrograms per dry standard cubic meter.

Method 30B may also be specified by New Source Performance Standards (NSPS), National Emission Standards for Hazardous Air Pollutants (NESHAP), emissions trading programs, State Implementation Plans (SIPs), and operating permits that require measurement of Hg concentrations in stationary source emissions, either to determine compliance with an applicable emission standard or limit, or to conduct RATAs of Hg CEMS and sorbent trap monitoring systems.

Method 30B is only applicable in low particulate conditions. Therefore the testing is performed on the flue gas after it has passed through all pollution control devices.

Coastal personnel continue to produce excellent Method 30B results, both in accuracy and cost efficiency. We strive to ensure that all testing is completed while factoring in the test's impact on our client's bottom line.

With the onset of MATS testing, Method 30B has become the go to method for assessing the quality of the CEMS data by estimating accuracy, RATA. Contact Coastal for your next Mercury CEMS RATA.