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The PAMS AutoGC systems collect not only hourly ambient air data but also have Quality Control samples which are outlined in the EPA PAMS Technical Assistance Guidance document (**TAD**). | The PAMS AutoGC systems collect not only hourly ambient air data but also have Quality Control samples which are outlined in the EPA PAMS Technical Assistance Guidance document (**TAD**). | ||
- | | + | * Quality Control Sample Types |
- | - Calibration Verification Standard (CVS) or Continuing Calibration Verification (CCV) Standard | + | |
- | * Required daily | + | |
- | * Used to confirm system response daily; recoveries generally ± 30% specified in the Network configuration | + | |
- | - System Blank (SB) or Method Blank | + | |
- | * Required daily | + | |
- | * Used to determine concentrations of target compounds which may be contributed by the analytical system | + | |
- | - Laboratory Calibration Standard (LCS) or Second Source Calibration Verification (SSCV) Standard | + | |
- | * Required weekly | + | |
- | * Used to confirm original calibration by reference. | + | |
- | - Retention Time Standard (RTS) | + | |
- | * Required weekly | + | |
- | * Used to verify correct target identification by retention time windows in method. | + | |
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- | === Format for Incoming Data - ASCII Text === | ||
- | The output format for data generated by the analytical data system must adhere to a specific ASCII text format to enable MAX to be able to correctly interpret and store the data. Orsat has generated output formats for both the Totalchrom and EZChrom data systems. | ||
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- | ==== Network and Site Configuration ==== | ||
In order to allow the evaluation of these QC samples each data set or //Site// has a definition which incorporates configuration parameters for the //Network// which defines information about incoming data such as a list of target VOCs, which targets will be in the QC samples and their concentrations and control limits. | In order to allow the evaluation of these QC samples each data set or //Site// has a definition which incorporates configuration parameters for the //Network// which defines information about incoming data such as a list of target VOCs, which targets will be in the QC samples and their concentrations and control limits. | ||
- | === Information Required for Network Configuration === | + | |
- Units (default is ppbC) | - Units (default is ppbC) | ||
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Each Site also has unique information to identify it in the database. | Each Site also has unique information to identify it in the database. | ||
- | === Information Required for Site Configuration === | ||
- | - Site name (defined in the incoming ASCII text file as " | ||
- | - Type - designation of data system generating the data, PerkinElmer or EZChrom | ||
- | - Minimum display value - generally 0 | ||
- | - Network assigned to the site | ||
- | - AQS number assigned to the site | ||
- | - POC if necessary | ||
- | - Short name - user entered text field | ||
- | - Formal name - user entered text field | ||
- | - Address, City and Zipcode | ||
- | - Latitude and Longitude | ||
- | - UTC offset | ||
- | - CAMS code (if available) | ||
- | - Interval, units code and method codes required for AQS file generation | ||
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* | * | ||
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**References** | **References** |