| DQ |
QC results not applicable because of sample matrix |
| DR |
Spiked amount less than five times background level |
| DS |
Batch Quality Assurance data from another project |
| DT |
Method detection limit elevated |
| DU |
Insufficient sample quantity for matrix spike/dup matrix spike |
| DV |
Corr. coef. for Method of Standard Addition is less than 0.995 |
| DW |
Sample result is less than reported value |
| DX |
Value < lowest standard (MQL), but > than MDL |
| DY |
Compound identified is an analysis at a secondary dilution factor |
| DZ |
The positive result is an atypical pattern for diesel analysis |
| E |
EPA Flag - Analyte exceeded the concentration range of the GC/MS |
| EA |
The positive result is an atypical pattern for gasoline analysis |
| EB |
Value is estimated |
| EC |
Value determined by the Method of Standard Addition |
| ED |
Concentration of total analyte ND; therefore this analyte is ND |
| EF |
Compound quantitated at a different dilution |
| EG |
Compound quantitated at a 2x dilution factor |
| EH |
Compound quantitated at a 5x dilution factor |
| EI |
Compound quantitated at a 10x dilution factor |
| EJ |
Compound quantitated at a 20x dilution factor |
| EK |
Compound quantitated at a 50x dilution factor |
| EL |
Compound quantitated at a 100x dilution factor |
| EM |
Compound quantitated at a 200x dilution factor |
| EN |
Compound quantitated at a 500x dilution factor |
| EO |
Compound quantitated at a 1000x dilution factor |
| EP |
Compound quantitated at > 1000x dilution factor |
| EQ |
Holding time is 28 days by anal. NO3-NO2 on pres. split & sub NO2 |
| ER |
Thiocyanate not analyzed separately, free CN+SCN below RL free C |
| ES |
Value undetected at the MDL |
| ET |
Sample was extracted past end of recommended max. holding time |
| EU |
LCS is outside of acceptance limits. MS/MDS are acceptable, no correction |
| EV |
Modified method; see narrative |
| EW |
Surr. recovery outside of acceptance limits, spike recov. accept. |
| EX |
Matrix spike diluted to not detectable during analysis |
| EY |
Result exceeds normal dynamic range; reported as a min. est. |
| EZ |
Peak coelution, sample concentration may be artificially high |
| F1 |
MS and/or MSD recovery exceeds control limits |
| FA |
Peak coelution, sample concentration may be artificially low |
| FB |
QC ion deviation > 20% relative to labeled std. used for quant. |
| FC |
Quantitative interference |
| FD |
Interferences affect 10% or more of the total PCDD/PCDF peak area |
| FE |
Carbon-labeled int. std. with s/n ratio of < 10:1 |
| FF |
S/N ratio 10:1 for the int. std. and assoc. analytes |
| FG |
Results rejected due to int. std. rec. outside QC limits |
| FH |
Results are valid even though int. std. rec. outside QC limits |
| FI |
Analyte in field sample and associated blank |
| FJ |
Total DPE contribution to the total PCDF value > 10% |
| FK |
EMPC values could be overestimated due to coelution |
| FL |
Int. std. ion-abundance ratio measured out of accept. range |
| FM |
Poorly resolved GC peak(s) |
| FN |
Large closely eluting peak cannot be separated from result |
| FO |
Est. maximum possible concentration (EMPC) |
| FP |
Extractable hydrocarbons |
| FQ |
Gasoline range organics calculated as JP-4 jet fuel |
| FR |
Diesel range organics, calculated as JP-4 jet fuel |
| FS |
Diesel range organics, as diesel |
| FT |
Methanol extraction |
| FU |
Heated purge |
| FV |
Purge volume 5 mL |
| FW |
Purge volume 25 mL |
| FX |
Analyte present in the instrument blank |
| FY |
Chromatogram not typical of calibration standard |
| FZ |
Identified by MS only; based on 1:1 response w/ internal stnd. |
| GA |
Components not separable by this method; quantified together |
| GB |
Matrix spike recovery not within control limits |
| GC |
Second column confirmation performed |
| GD |
Secondary column result |
| GE |
Post-digestion spike out of control limits |
| GF |
Sample absorbance is less than 50% of spike absorbance |
| GG |
Analytical results not reliable for this common lab contaminant |
| GH |
Reporting limit must be considered an approximation |
| GI |
Analyte confirmed by GC/MS |
| GJ |
Result determined using SIM mode |
| GK |
Quantitated as an isomer pair |
| GL |
2,3,7,8-TCDF results have been confirmed on a DB-225 column |
| GM |
Result calc. by avg. response factor from init. calib. curve |
| GN |
Surrogate recovery is outside of control limits |
| GO |
Result est. below lower calib. limit but above target limit |
| GP |
Duplicate analysis not within control limits |
| GQ |
Post-digest. spike recov. 40% - 85% due to matrix interference |
| GR |
Internal standard recovery is outside method recovery limit |
| GS |
Reporting limit(s) raised: high level target analyte in sample |
| GT |
Post-digestion spike recovery <40% due to matrix interference |
| GU |
>10% breakthrough in second carbon col. due to matrix effects |
| GV |
Result detected is below the lowest standard and above zero |
| GW |
Post-digestion spike recovery between 115%-150% |
| GX |
All reporting limits raised due to high conc. dissolved solids |
| GY |
Analyte assoc. with sample processing & analysis in lab environ. |
| GZ |
Secondary ion used for quantitation |
| H |
A holding time violation has occurred. |
| HA |
Quantit. of unknown hydrocarbon(s) in sample based on diesel |
| HB |
Quantit. of unknown hydrocarbon(s) in sample based on gasoline |
| HC |
Analyte is this compound or an isomer |
| HD |
Chromat. profile inconsistent with pattern(s) of ref. fuel stnds. |
| HE |
Extract was run through separation method; see case narrative |
| HF |
SW3630B clean-up method performed |
| HG |
Result exceeds calib. range, but not lab's; considered valid |
| HH |
Result exceeds linear range; concentration may be understated |
| HI |
SW3611B clean-up method performed |
| HJ |
Blank spike recovery not within control limits |