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Stack Testing
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Source Testing for Air Emissions
Air emissions are dynamic in nature and typically once past the source, dilute rapidly in the air body to very small concentrations. Source measurement provides the best opportunity to sample the emissions and calculate the rates of discharge prior to this dilution.
Source testing may be required for the following reasons;
1. Demonstrate compliance with government regulations
2. Obtain data for the design of control equipment
3. Validate air pollution control equipment guarantees
4. Process optimization
5. Use in developing emissions inventory
Many methods have been developed over the years to measure the flux of contaminants from individual sources, both process and fugitive.
REFERENCE METHODS (Compliance testing)
In general the reference methods, at least for North America, and for many other parts of the world, have come to be those developed, tested and issued by the US EPA under the Federal Register. Most jurisdictions will accept these methods as adequate for compliance testing. CTI is able to provide our clients with all aspects of the EPA approved testing protocols. Because of the exact nature of these protocols this type of testing tends to more expensive than less rigorous methods and hence finds greatest usage in compliance proving situations with legal and regulatory overtones
Methods include but are not limited to;
1. Method 5 and 17 Particulate emissions
2. Method 29 Metals emissions
3. Modified Method 5 Dioxin and Furan Emissions
4. TOC to Toxics and Organics
NON REFERENCE METHODS (Engineering Measurements);
Perhaps as importantly, we recognise and are able to provide alternate levels of testing where compliance testing is not required. These, less rigorous, but often as accurate, methods can produce economical measurements from sources where estimation is not possible nor practicable and can often be presented to regulatory authorities as acceptable emissions estimates in situations that have not come to compliance crisis.
Non reference test methods can be selected to measure particulate matter, metals, gases and organic vapours.
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