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