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AQS Codes and Descriptions
Unless indicated otherwise, links on this page are to Excel spreadsheets created with Discoverer.
- Agency Codes*
- listed numerically (No Tribes) (9/27/07, 170K)
- listed within states (No Tribes) (9/27/07, 233K)
- Tribal Agencies (9/27/07, 30K)
- City names (by state) (163 pp, 377K, About PDF)
- Collection Frequency Codes (9/27/07, 10K)
- CMSAs (9/27/07, 8K)
- MSAs - sorted by code (9/27/07, 41K)
- Monitor Types (9/27/07, 6K)
- Sample Duration Codes (9/27/07, 22K)
- Protocols with Sampling Methodologies
- All Pollutants (11/27/07, 2799K) Criteria Pollutants only (11/27/07, 211K)
- CORE HAPs only (08/01/07, 460K)
- HAPS only (08/01/07, 873K)
- IMPROVE Carbon (08/01/07, 46K)
- IMPROVE Speciation (08/01/07, 130K)
- MET only (08/01/07, 97K)
- PAMS only (08/01/07, 883K)
- PAMS VOC only (08/01/07, 760K)
- PM10 Speciation (08/01/07, 180K)
- PM Coarse (08/01/07, 27K)
- PM2.5 Cont NONRefs (08/01/07, 58K)
- PM2.5 Mass and QA (08/01/07, 85K)
- Speciation Cation/Anion (08/01/07, 37K)
- Speciation (08/01/07, 238K)
- Speciation Carbon (08/01/07, 42K)
- Speciation Metals (08/01/07, 137K)
- UATMP Carbonyl (08/01/07, 151K)
- UATMP VOC (08/01/07, 771K)
- all pollutants (parameters) by codes (9/27/07, 166K)
- all pollutants by description (9/27/07, 165K)
- parameters with CAS numbers** (9/27/07, 142K)
(Null Data codes are included with all the Qualifier codes in the new format.)
*Agency Codes are unique to the agency within AQS. If an agency you need already exists, but is not shown for your state, contact NADG to have your state added to the list of states that can use that agency code.
**All parameter codes used by AQS do not have CAS numbers. This table lists only those with CAS numbers.