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Most Current Recovery vs Concentration Charts for NWQL LS 2021


The recovery versus concentration charts provide OBSP recovery information for every analyte at different concentrations for every schedule OBSP assesses.

The black line on the chart describes the median recovery of the data.


The charts and data that you might secure from this U.S. Geological Survey (USGS) web page (identified as "OBSP") have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.
*Lab Schedule 2021 - NAWQA 85 Volatile Organic Compounds by GCMS, Whole Water Recoverable
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1,1,1,2-Tetrachloroethane 77562GCM66 630-20-6
1,1,1-Trichloroethane 34506GCM66 71-55-6
1,1,2,2-Tetrachloroethane 34516GCM66 79-34-5
1,1,2-Trichloroethane 34511GCM66 79-00-5
1,1,2-Trichlorotrifluoroethane 77652GCM66 76-13-1
1,1-Dichloroethane 34496GCM66 75-34-3
1,1-Dichloroethylene 34501GCM66 75-35-4
1,1-Dichloropropene 77168GCM66 563-58-6
1,2,3,4-Tetramethylbenzene 49999GCM66 488-23-3
1,2,3,5-Tetramethylbenzene 50000GCM66 527-53-7
1,2,3-Trichlorobenzene 77613GCM66 87-61-6
1,2,3-Trichloropropane 77443GCM66 96-18-4
1,2,3-Trimethylbenzene 77221GCM66 526-73-8
1,2,4-Trichlorobenzene 34551GCM66 120-82-1
1,2,4-Trimethylbenzene 77222GCM66 95-63-6
1,2-Dibromo-3-chloropropane 82625GCM66 96-12-8
1,2-Dibromoethane 77651GCM66 106-93-4
1,2-Dichlorobenzene 34536GCM66 95-50-1
1,2-Dichloroethane 32103GCM66 107-06-2
1,2-Dichloropropane 34541GCM66 78-87-5
1,3,5-Trimethylbenzene 77226GCM66 108-67-8
1,3-Dichlorobenzene 34566GCM66 541-73-1
1,3-Dichloropropane 77173GCM66 142-28-9
1,4-Dichlorobenzene 34571GCM66 106-46-7
2,2-Dichloropropane 77170GCM66 594-20-7
2-Butanone 81595GCM66 78-93-3
2-Chlorotoluene 77275GCM66 95-49-8
2-Hexanone 77103GCM66 591-78-6
3-Chloropropene (E) 78109GCM66 107-05-1
4-Chlorotoluene 77277GCM66 106-43-4
4-Isopropyl-1-methylbenzene (Cymene) 77356GCM66 99-87-6
4-Methyl-2-pentanone 78133GCM66 108-10-1
Acetone 81552GCM66 67-64-1
Acrylonitrile 34215GCM66 107-13-1
Benzene 34030GCM66 71-43-2
Bromobenzene 81555GCM66 108-86-1
Bromochloromethane 77297GCM66 74-97-5
Bromodichloromethane 32101GCM66 75-27-4
Bromoethene 50002GCM66 593-60-2
Bromoform 32104GCM66 75-25-2
Bromomethane (E) 34413GCM66 74-83-9
Butylbenzene 77342GCM66 104-51-8
Carbon disulfide 77041GCM66 75-15-0
Chlorobenzene 34301GCM66 108-90-7
Chloroethane 34311GCM66 75-00-3
Chloroform 32106GCM66 67-66-3
Chloromethane (E) 34418GCM66 74-87-3
cis-1,2-Dichloroethylene 77093GCM66 156-59-2
cis-1,3-Dichloropropene 34704GCM66 10061-01-5
Dibromochloromethane 32105GCM66 124-48-1
Dibromomethane 30217GCM66 74-95-3
Dichlorodifluoromethane (E) 34668GCM66 75-71-8
Dichloromethane 34423GCM66 75-09-2
Diethyl ether 81576GCM66 60-29-7
Diisopropyl ether 81577GCM66 108-20-3
Ethyl methacrylate 73570GCM66 97-63-2
Ethyl tert-butyl ether 50004GCM66 637-92-3
Ethylbenzene 34371GCM66 100-41-4
Hexachlorobutadiene 39702GCM66 87-68-3
Hexachloroethane 34396GCM66 67-72-1
Isopropylbenzene (Cumene) 77223GCM66 98-82-8
m- and p-Xylene 85795GCM66 not assigned
Methyl acrylate 49991GCM66 96-33-3
Methyl acrylonitrile 81593GCM66 126-98-7
Methyl iodide (E) 77424GCM66 74-88-4
Methyl methacrylate 81597GCM66 80-62-6
n-Propylbenzene 77224GCM66 103-65-1
Naphthalene 34696GCM66 91-20-3
o-Ethyl toluene 77220GCM66 611-14-3
o-Xylene 77135GCM66 95-47-6
sec-Butylbenzene 77350GCM66 135-98-8
Styrene 77128GCM66 100-42-5
tert-Butyl methyl ether 78032GCM66 1634-04-4
tert-Butylbenzene 77353GCM66 98-06-6
tert-Pentyl methyl ether 50005GCM66 994-05-8
Tetrachloroethylene 34475GCM66 127-18-4
Tetrachloromethane 32102GCM66 56-23-5
Tetrahydrofuran 81607GCM66 109-99-9
Toluene 34010GCM66 108-88-3
trans-1,2-Dichloroethylene 34546GCM66 156-60-5
trans-1,3-Dichloropropene 34699GCM66 10061-02-6
trans-1,4-Dichloro-2-butene 73547GCM66 110-57-6
Trichloroethylene 39180GCM66 79-01-6
Trichlorofluoromethane 34488GCM66 75-69-4
Vinyl chloride 39175GCM66 75-01-4

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