| ProtocolID | Flag | StatusFlag | Description | FlagType | SourceColumn |
| 2008 | | V0 | Valid Data | Validity | Qualifier |
| 2008 | 1 | V4 | Deviation from a CFR/Critical Criteria Requirement | Quality Assurance Qualifier | Qualifier% |
| 2008 | 1C | V4 | A 1-Point QC check exceeds acceptance criteria but there is compelling evidence that the analyzer data is valid. | Null Data Qualifier | Qualifier% |
| 2008 | 1V | V0 | Data reviewed and validated | Quality Assurance Qualifier | Qualifier |
| 2008 | 2 | V4 | Operational Deviation | Quality Assurance Qualifier | Qualifier% |
| 2008 | 3 | V4 | Field Issue | Quality Assurance Qualifier | Qualifier% |
| 2008 | 4 | V4 | Lab Issue | Quality Assurance Qualifier | Qualifier% |
| 2008 | 5 | V4 | Outlier | Quality Assurance Qualifier | Qualifier% |
| 2008 | 6 | V4 | QAPP Issue | Quality Assurance Qualifier | Qualifier% |
| 2008 | 7 | V4 | Below Lowest Calibration Level | Quality Assurance Qualifier | Qualifier% |
| 2008 | 8 | V4 | QA/QC Unknown. | Quality Assurance Qualifier | Qualifier% |
| 2008 | 9 | V4 | Negative value detected - zero reported | Quality Assurance Qualifier | Qualifier% |
| 2008 | A | V0 | HIGH WINDS | Natural Event | Qualifier% |
| 2008 | AA | M1 | Sample Pressure out of Limits | Null Data Qualifier | Qualifier% |
| 2008 | AB | M1 | Technician Unavaliable | Null Data Qualifier | Qualifier% |
| 2008 | AC | M1 | Construction/Repairs in Area | Null Data Qualifier | Qualifier% |
| 2008 | AD | M1 | Shelter Storm Damage | Null Data Qualifier | Qualifier% |
| 2008 | AE | M1 | Shelter Temperature Outside Limits | Null Data Qualifier | Qualifier% |
| 2008 | AF | M1 | Scheduled but not Collected | Null Data Qualifier | Qualifier% |
| 2008 | AG | M1 | Sample Time out of Limits | Null Data Qualifier | Qualifier% |
| 2008 | AH | M1 | Sample Flow Rate out of Limits | Null Data Qualifier | Qualifier% |
| 2008 | AI | M1 | Insufficient Data (cannot calculate) | Null Data Qualifier | Qualifier% |
| 2008 | AJ | M1 | Filter Damage | Null Data Qualifier | Qualifier% |
| 2008 | AK | M1 | Filter Leak | Null Data Qualifier | Qualifier% |
| 2008 | AL | M1 | Voided by Operator | Null Data Qualifier | Qualifier% |
| 2008 | AM | M1 | Miscellaneous Void | Null Data Qualifier | Qualifier% |
| 2008 | AN | M1 | Machine Malfunction | Null Data Qualifier | Qualifier% |
| 2008 | AO | M1 | Bad Weather | Null Data Qualifier | Qualifier% |
| 2008 | AP | M1 | Vnadalism | Null Data Qualifier | Qualifier% |
| 2008 | AQ | M1 | Collection Error | Null Data Qualifier | Qualifier% |
| 2008 | AR | M1 | Lab Error | Null Data Qualifier | Qualifier% |
| 2008 | AS | M1 | Poor Quality Assurance Results | Null Data Qualifier | Qualifier% |
| 2008 | AT | M1 | Calibration | Null Data Qualifier | Qualifier% |
| 2008 | AU | M1 | Monitoring Waived | Null Data Qualifier | Qualifier% |
| 2008 | AV | M1 | Power Failure | Null Data Qualifier | Qualifier% |
| 2008 | AW | M1 | Wildlife Damage | Null Data Qualifier | Qualifier% |
| 2008 | AX | M1 | Precision Check | Null Data Qualifier | Qualifier% |
| 2008 | AY | M1 | Q C Control Points (zero/span) | Null Data Qualifier | Qualifier% |
| 2008 | AZ | M1 | Q C Audit | Null Data Qualifier | Qualifier% |
| 2008 | B | VE | Stratospheric Ozone Intrusion. | Informational Only | Qualifier% |
| 2008 | BA | M1 | Maintenance/Routine Repairs | Null Data Qualifier | Qualifier% |
| 2008 | BB | M1 | Unable to Reach Site | Null Data Qualifier | Qualifier% |
| 2008 | BC | M1 | Multi-point Calibration | Null Data Qualifier | Qualifier% |
| 2008 | BD | M1 | Auto Calibration | Null Data Qualifier | Qualifier% |
| 2008 | BE | M1 | Building/Site Repair | Null Data Qualifier | Qualifier% |
| 2008 | BF | M1 | Precision/Zero/Span | Null Data Qualifier | Qualifier% |
| 2008 | BG | M1 | Missing ozone data not likely to exceed level of standard | Null Data Qualifier | Qualifier% |
| 2008 | BH | M1 | Interference/co-elution/misidentification | Null Data Qualifier | Qualifier% |
| 2008 | BI | M1 | Lost or damaged in transit | Null Data Qualifier | Qualifier% |
| 2008 | BJ | M1 | Operator Error | Null Data Qualifier | Qualifier% |
| 2008 | BK | M1 | Site computer/data logger down | Null Data Qualifier | Qualifier% |
| 2008 | BL | M1 | QA Audit | Null Data Qualifier | Qualifier% |
| 2008 | BM | M1 | Accuracy check | Null Data Qualifier | Qualifier% |
| 2008 | BN | M1 | Sample Value Exceeds Media Limit | Null Data Qualifier | Qualifier5 |
| 2008 | BR | M1 | Sample Value Below Acceptable Range | Null Data Qualifier | Qualifier% |
| 2008 | C | V0 | VOLCANIC ERUPTIONS | Natural Event | Qualifier% |
| 2008 | CB | V2 | Values have been Blank Corrected. | Quality Assurance Qualifier | Qualifier% |
| 2008 | CC | V5 | Clean Canister Residue | Quality Assurance Qualifier | Qualifier% |
| 2008 | CL | V4 | Surrogate Recoveries Outside Control Limits. | Quality Assurance Qualifier | Qualifier% |
| 2008 | CS | M1 | Laboratory Calibration Standard | Null Data Qualifier | Qualifier% |
| 2008 | D | V0 | SANDBLASTING | Exceptional Event | Qualifier% |
| 2008 | DA | M1 | Aberrant Data (Corrupt Files, Aberrant Chromatography, Spikes, Shifts) | Null Data Qualifier | Qualifier% |
| 2008 | DI | V4 | Sample was diluted for analysis. | Quality Assurance Qualifier | Qualifier% |
| 2008 | DL | M1 |
Detection Limit Analyses | Null Data Qualifier | Qualifier% |
| 2008 | DN | V2 | DNPH peak less than NATTS TAD requirement, reported value should be considered an estimate. | Quality Assurance Qualifier | Qualifier% |
| 2008 | E | V0 | FOREST FIRE | Natural Event | Qualifier% |
| 2008 | EC | M1 | Exceeds Critical Criteria | Null Data Qualifier | Qualifier% |
| 2008 | EH | V2 | Estimated; Exceeds Upper Range | Quality Assurance Qualifier | Qualifier% |
| 2008 | F | V0 | STRUCTURAL FIRE | Exceptional Event | Qualifier% |
| 2008 | FB | V4 | Field Blank Value Above Acceptable Limit | Quality Assurance Qualifier | Qualifier% |
| 2008 | FI | M1 | Filter Inspection Flag | Null Data Qualifier | Qualifier% |
| 2008 | FX | V5 | Filter Integrity Issue. | Quality Assurance Qualifier | Qualifier% |
| 2008 | G | VE | High Pollen Count. | Informational Only | Qualifier% |
| 2008 | H | V0 | CHEMICAL SPILLS & INDUST. ACCIDENTS | Exceptional Event | Qualifier% |
| 2008 | HT | V6 | Sample pick-up hold time exceeded; data questionable | Quality Assurance Qualifier | Qualifier% |
| 2008 | I | V0 | UNUSUAL TRAFFIC CONGESTION | Exceptional Event | Qualifier% |
| 2008 | IA | V0 | African Dust | Informational Only | Qualifier% |
| 2008 | IB | V0 | Asian Dust | Informational Only | Qualifier% |
| 2008 | IC | V0 | Chem. Spills & Indust Accidents | Informational Only | Qualifier% |
| 2008 | ID | V0 | Cleanup After a Major Disaster | Informational Only | Qualifier% |
| 2008 | IE | V0 | Demolition | Informational Only | Qualifier% |
| 2008 | IF | V0 | Fire - Canadian | Informational Only | Qualifier% |
| 2008 | IG | V0 | Fire - Mexico/Central America | Informational Only | Qualifier% |
| 2008 | IH | V0 | Fireworks | Informational Only | Qualifier% |
| 2008 | II | V0 | High Pollen Count | Informational Only | Qualifier% |
| 2008 | IJ | V0 | High Winds | Informational Only | Qualifier% |
| 2008 | IK | V0 | Infrequent Large Gatherings | Informational Only | Qualifier% |
| 2008 | IL | V0 | Other | Informational Only | Qualifier% |
| 2008 | IM | V0 | Prescribed Fire | Informational Only | Qualifier% |
| 2008 | IN | V0 | Seismic Activity | Informational Only | Qualifier% |
| 2008 | IO | V0 | Stratospheric Ozone Intrusion | Informational Only | Qualifier% |
| 2008 | IP | V0 | Structural Fire | Informational Only | Qualifier% |
| 2008 | IQ | V0 | Terrorist Act | Informational Only | Qualifier% |
| 2008 | IR | V0 | Unique Traffic Disruption | Informational Only | Qualifier% |
| 2008 | IS | V0 | Volcanic Eruptions | Informational Only | Qualifier% |
| 2008 | IT | V0 | Wildfire-U. S. | Informational Only | Qualifier% |
| 2008 | IU | V0 | Wildland Fire Use Fire-U. S. | Informational Only | Qualifier% |
| 2008 | J | V0 | Construction/Demolition | Informational Only | Qualifier% |
| 2008 | K | V0 | Agricultural Tilling | Informational Only | Qualifier% |
| 2008 | L | V0 | Highway Construction | Informational Only | Qualifier% |
| 2008 | LB | V4 | Lab blank value above acceptable limit | Quality Assurance Qualifier | Qualifier% |
| 2008 | LJ | V2 | Identification Of Analyte Is Acceptable; Reported Value Is An Estimate | Quality Assurance Qualifier | Qualifier% |
| 2008 | LK | V4 | Analyte Identified; Reported Value May Be Biased High | Quality Assurance Qualifier | Qualifier% |
| 2008 | LL | V4 | Analyte Identified; Reported Value May Be Biased Low | Quality Assurance Qualifier | Qualifier% |
| 2008 | M | V0 | REROUTING OF TRAFFIC | Exceptional Event | Qualifier% |
| 2008 | MB | M1 | Method Blank (Analytical) | Null Data Qualifier | Qualifier% |
| 2008 | MC | M1 | Module End Cap Missing | Null Data Qualifier | Qualifier% |
| 2008 | MD | V4 | Value between MDL and IDL | Quality Assurance Qualifier | Qualifier% |
| 2008 | MS | VS | Value reported is 1/2 MDL substituted. | Quality Assurance Qualifier | Qualifier% |
| 2008 | MX | V4 | Matrix Effect. | Quality Assurance Qualifier | Qualifier% |
| 2008 | N | V0 | SANDING/SALTING OF STREETS | Exceptional Event | Qualifier% |
| 2008 | ND | M1 | No Value Detected | Quality Assurance Qualifier | Qualifier% |
| 2008 | NS | V5 | Influenced by nearby source | Quality Assurance Qualifier | Qualifier% |
| 2008 | O | V0 | INFREQUENT LARGE GATHERINGS | Exceptional Event | Qualifier% |
| 2008 | P | V0 | Roofing Operations | Informational Only | Qualifier% |
| 2008 | PQ | V4 | Values Between PQL And MDL. | Quality Assurance Qualifier | Qualifier% |
| 2008 | Q | V0 | PRESCRIBED BURNING | Exceptional Event | Qualifier% |
| 2008 | QP | V6 | Pressure Sensor Questionable. | Quality Assurance Qualifier | Qualifier% |
| 2008 | QT | V6 | Temperature Sensor Questionable. | Quality Assurance Qualifier | Qualifier% |
| 2008 | QV | M1 | Quality Control Multi-point Verification | Null Data Qualifier | Qualifier% |
| 2008 | QX | V4 | Does not meet QC criteria | Quality Assurance Qualifier | Qualifier% |
| 2008 | R | V0 | CLEAN UP AFTER A MAJOR DISASTER | Exceptional Event | Qualifier% |
| 2008 | RA | V0 | African Dust | Natural Event Qualifier | Qualifier% |
| 2008 | RB | V0 | Asian Dust | Natural Event Qualifier | Qualifier% |
| 2008 | RC | V0 | Chem. Spills & Indust. Accidents | Exceptional Event Qualifier | Qualifier% |
| 2008 | RD | V0 | Cleanup After a Major Disaster | Exceptional Event Qualifier | Qualifier% |
| 2008 | RE | V0 | Demolition | Exceptional Event Qualifier | Qualifier% |
| 2008 | RF | V0 | Fire - Canadian | Natural Event Qualifier | Qualifier% |
| 2008 | RG | V0 | Fire - Mexico/Central America | Natural Event Qualifier | Qualifier% |
| 2008 | RH | V0 | Fireworks | Exceptional Event Qualifier | Qualifier% |
| 2008 | RI | V0 | High Pollen Count | Natural Event Qualifier | Qualifier% |
| 2008 | RJ | V0 | High Winds | Natural Event Qualifier | Qualifier% |
| 2008 | RK | V0 | Infrequent Large Gatherings | Exceptional Event Qualifier | Qualifier% |
| 2008 | RL | V0 | Other | Exceptional Event Qualifier | Qualifier% |
| 2008 | RM | V0 | Prescribed Fire | Exceptional Event Qualifier | Qualifier% |
| 2008 | RN | V0 | Seismic Activity | Natural Event Qualifier | Qualifier% |
| 2008 | RO | V0 | Stratospheric Ozone Intrusion | Natural Event Qualifier | Qualifier% |
| 2008 | RP | V0 | Structural Fire | Exceptional Event Qualifier | Qualifier% |
| 2008 | RQ | V0 | Terrorist Act | Exceptional Event Qualifier | Qualifier% |
| 2008 | RR | V0 | Unique Traffic Disruption | Exceptional Event Qualifier | Qualifier% |
| 2008 | RS | V0 | Volcanic Eruptions | Natural Event Qualifier | Qualifier% |
| 2008 | RT | V0 | Wildfire-U. S. | Natural Event Qualifier | Qualifier% |
| 2008 | RU | V0 | Wildland Fire Use Fire-U. S. | Natural Event Qualifier | Qualifier% |
| 2008 | S | VE | Seismic Activity. | Informational Only | Qualifier% |
| 2008 | SA | M1 | Storm Approaching | Null Data Qualifier | Qualifier% |
| 2008 | SC | M1 | Sampler Contamination | Null Data Qualifier | Qualifier% |
| 2008 | SQ | V4 | Values Between SQL and MDL | Quality Assurance Qualifier | Qualifier% |
| 2008 | SS | VS | Value substituted from secondary monitor. | Quality Assurance Qualifier | Qualifier% |
| 2008 | ST | M1 | Calibration Verification Standard | Null Data Qualifier | Qualifier% |
| 2008 | SV | M1 | Sample Volume out of limits. | Null Data Qualifier | Qualifier% |
| 2008 | SX | V4 | Does Not Meet Siting Criteria | Quality Assurance Qualifier | Qualifier |
| 2008 | T | V0 | UNKNOWN | | Qualifier% |
| 2008 | TB | V4 | Trip Blank Value Above Acceptable Limit | Quality Assurance Qualifier | Qualifier% |
| 2008 | TC | M1 | Component Check & Retention Time Standard | Null Data Qualifier | Qualifier% |
| 2008 | TS | M1 | Holding Time Or Transport Temperature Is Out Of Specs. | Null Data Qualifier | Qualifier% |
| 2008 | TT | V5 | Transport Temperaure is Out of Specs. | Quality Assurance Qualifier | Qualifier% |
| 2008 | U | V0 | SAHARA DUST | Natural Event | Qualifier% |
| 2008 | V | V0 | Validated Value | Quality Assurance Qualifier | Qualifier% |
| 2008 | VB | V4 | Value below normal; no reason to invalidate | Quality Assurance Qualifier | Qualifier% |
| 2008 | W | V4 | Flow Rate Average out of Spec. | Quality Assurance Qualifier | Qualifier% |
| 2008 | X | V4 | Filter Temperature Difference out of Spec. | Quality Assurance Qualifier | Qualifier% |
| 2008 | XX | M1 | Experimental Data | Null Data Qualifier | Qualifier% |
| 2008 | Y | V4 | Elapsed Sample Time out of Spec. | Quality Assurance Qualifier | Qualifier% |
| 2008 | Z | VE | Other event. | Informational Only | Qualifier% |