As originally established by the EPA Clean Air Mercury Rule (CAMR), coal-fired electric generation units will monitor mercury emissions. In order to determine compliance levels and develop control strategies, utilities need accurate and reliable mercury emissions data. Coal-fired combustion sources may use a sorbent trap monitoring system like the Apex XC-6000EPC as an alternate type of continuous mercury monitoring system. The AutoMerc Sampler system is fully functional as a primary Appendix K system, a back-up monitoring system (redundant or non-redundant) and can be used to perform Reference Method 30B, Relative Accuracy Testing Audit, and System Certification Testing.