Standard Operating Procedure (SOP) for Compliance Monitoring ...

SOP for Compliance Monitoring Using CEMSs
Definition of Terms
Calibration Drift—Calibration drift (zero and span checks) is the value obtained by subtracting the
known standard or reference value from the raw response of a Continuous Emissions Monitoring
System (CEMS).
Continuous Emissions Monitoring System—Equipment used to sample and condition, analyse, and
provide permanent record of emissions or process parameters.
Cylinder Gas Audit—This type of audit is an alternative relative accuracy test of a CEMS to
determine its precision using certified gases. A cylinder gas audit (CGA) applies to gaseous pollutant
or diluent CEMS and is not intended to audit other types of monitors associated with the CEMS such
as flow or temperature monitors.
Data Acquisition and Handling System—Equipment used to record and report the data produced by
an analyser in a CEMS.
Excess Emissions—The amount by which recorded emissions exceed those allowed by regulations,
operating permits, and other applicable requirements.
Excess Emission Report—A report documenting the date, time, and magnitude of each excess
emission episode occurring during the reporting period.
Monitor Malfunction—Any interruption in the collection of data as a result of the failure of any
component of the CEMS to operate within specifications of the manufacturer or performance
specifications.
Monitoring Plan—A plan submitted prior to actual installation of a CEMS that outlines information
such as sampling location and instrument specifications.
Performance Audit—This type of audit is a quantitative evaluation of a CEMS operation.
Relative Accuracy Audit—This type of audit is an abbreviated version of a relative accuracy test
audit, which was originally intended for auditing CEMS that were not designed to accept CGAs.
Relative Accuracy Test Audit—This type of audit is the primary method for determining the
correlation of CEMS data to simultaneously collected reference method test data.
Summary Report—This report is a summary of all monitor and excess emissions information that
occurred during a reporting period.
Systems Audit—This type of audit is a qualitative evaluation of a CEMS operation.
Document Tracking Number: 02.02.203.WP.04
Date of Issue: 14Jun10
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