US Geological Survey
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Recovery vs Concentration Charts
The Branch of Quality Systems (BQS) operates an Organic Blind Sample Project (OBSP). One of the goals of the project is to document bias and variability for the National Water Quality Laboratory (NWQL) through the use of blind quality assurance (QA) samples. From these summaries, districts can be informed of the NWQL's performance on QA samples that parallel their own environmental samples.

The recovery versus concentration charts provide OBSP recovery inforamtion for every analyte at different concentrations for every method OBSP assesses since January 2001. The charts exhibit a median line. All data is provisional and may change if the OBSP deems necessary.

Note: The OBSP reports may add to the interpretation of the data seen in the time series charts.

A red analyte name is an indication of a permanently estimated compound .
NOTE: Charts are presented as graphical images. Use the back button on your browser to return to analyte choices.


Data Provisional: Subject to change.
Lab Schedule 1319 - Organophosphorus Pesticides, Whole Water Recoverable
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
Carbophenothion 39786GC095 786-19-6
Chlorpyrifos 38932GC089 2921-88-2
Diazinon 39570GC095 333-41-5
Disulfoton (E) 39011GC089 298-04-4
Ethion 39398GC089 563-12-2
Fonofos 82614GC095 944-22-9
Malathion (E) 39530GC095 121-75-5
Parathion 39540GC095 56-38-2
Parathion-methyl 39600GC095 298-00-0
Phorate 39023GC089 298-02-2
S,S,S-Tributylphosphorotrithioate (DEF) 39040GC089 78-48-8
Lab Schedule 1324 - Organochlorine Pesticides by GC, Whole Water Recoverable
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
Aldrin 39330GCE12 309-00-2
Alpha-endosulfan (Endosulfan I) 39388GCE12 959-98-8
Deildrin 39380GCE12 60-57-1
Endrin 39390GCE12 72-20-8
Heptachlor Epoxide 39420GCE12 1024-57-3
Heptachlor 39410GCE12 76-44-8
Lindane 39340GCE12 58-89-9
Mirex 39755GCE12 2385-85-5
p,p'-DDD 39360GCE12 72-54-8
p,p'-DDE 39365GCE12 72-55-9
p,p'-DDT 39370GCE12 50-29-3
p,p'-Methoxychlor 39480GCE12 72-43-5
Lab Schedule 1383 - Semivolatile Compounds (base/neutral/acid - BNA), Whole Water Recoverable
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1,2,4-Trichlorobenzene 34551GCM57 120-82-1
1,2-Dichlorobenzene 34536GCM57 95-50-1
1,2-Diphenylhydrazine 82626GCM55 122-66-7
1,3-Dichlorobenzene 34566GCM57 541-73-1
1,4-Dichlorobenzene 34571GCM57 106-46-7
2,4,6-Trichlorophenol 34621GCM56 88-06-2
2,4-Dichlorophenol 34601GCM56 120-83-2
2,4-Dimethylphenol (Dichlorprop) 34606GCM56 105-67-9
2,4-Dinitrophenol (E) 34616GCM56 51-28-5
2,4-Dinitrotoluene 34611GCM57 121-14-2
2,6-Dinitrotoluene 34626GCM57 606-20-2
2-Chloronaphthalene 34581GCM57 91-58-7
2-Chlorophenol 34586GCM56 95-57-8
2-Nitrophenol 34591GCM56 88-75-5
3,3'-Dichlorobenzindine (E) 34631GCM55 91-94-1
4,6-Dinitro-2-methylphenol (E) 34657GCM56 534-52-1
4-Bromophenylphenylether 34636GCM57 101-55-3
4-Chloro-3-methylphenol 34452GCM56 59-50-7
4-Chlorophenyl phenyl ether 34641GCM57 7005-72-3
4-Nitrophenol (E) 34646GCM56 100-02-7
Acenaphthene 34205GCM57 83-32-9
Acenaphthylene 34200GCM57 208-96-8
Anthracene 34220GCM57 120-12-7
Benz[a]anthracene 34526GCM57 56-55-3
Benzidine (E) - Insufficient data has been collected for this compound. 39120GCM55 92-87-5
Benzo[a]pyrene 34247GCM57 50-32-8
Benzo[b]fluoranthene 34230GCM57 205-99-2
Benzo[ghi]perylene 34521GCM57 191-24-2
Benzo[k]fluoranthene 34242GCM57 207-08-9
bis(2-Chloroethoxy)methane 34278GCM57 111-91-1
Bis(2-Chloroethyl)ether 34273GCM57 111-44-4
bis(2-chloroisopropyl) ether 34283GCM57 108-60-1
Bis(2-Ethylhexyl) phthalate 39100GCM57 117-81-7
Butylbenzyl phthalate 34292GCM57 85-68-7
Chrysene 34320GCM57 218-01-9
Dibenz[a,h]anthracene 34556GCM57 53-70-3
Diethyl phthalate 34336GCM57 84-66-2
Dimethyl phthalate 34341GCM57 131-11-3
Di-n-butyl phthalate 39110GCM57 84-74-2
Di-n-octyl phthalate 34596GCM57 117-84-0
Fluroranthene 34376GCM57 206-44-0
Fluorene 34381GCM57 86-73-7
Hexachlorobenzene 39700GCM57 118-74-1
Hexachlorobutadiene (E) 39702GCM57 87-68-3
Hexachlorocyclopentadiene (E) 34386GCM57 77-47-4
Hexachloroethane (E) 34396GCM57 67-72-1
Indeno[1,2,3-cd]pyrene 34403GCM57 193-39-5
Isophorone 34408GCM57 78-59-1
Naphthalene 34696GCM57 91-20-3
Nitrobenzene 34447GCM57 98-95-3
n-Nitrosodimethylamine 34438GCM57 62-75-9
n-Nitrosodi-n-propylamine (E) 34428GCM57 621-64-7
N-Nitrosodiphenylamine 34433GCM57 86-30-6
Pentachlorophenol (E) 39032GCM56 87-86-5
Penanthrene 34461GCM57 85-01-8
Phenol 34694GCM56 108-95-2
Pyrene 34469GCM57 129-00-0
Lab Schedule 1433 - Waste Water Compounds by GCMS, Filtered
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1,4-Dichlorobenzene (E) 34572GCM37 106-46-7
1-Methylnaphthalene 62054GCM37 90-12-0
2,6-Dimethylnaphthalene 62055GCM37 581-42-0
2-Methylnaphthalene 62056GCM37 91-57-6
3-beta-Coprostanol (E) 62057GCM37 360-68-9
3-Methyl-1(H)-indole (Skatole) 62058GCM37 83-34-1
3-tert-Butyl-4-hydroxy anisole (BHA) (E) 62059GCM37 25013-16-5
4-Cumylphenol 62060GCM37 599-64-4
4-n-Octylphenol 62061GCM37 1806-26-4
4-tert-Octylphenol 62063GCM37 136-85-6
5-Methyl-1H-benzotriazole 62062GCM37 140-66-9
Acetophenone 62064GCM37 98-86-2
Acetyl hexamethyl tetrahydronaphthalene (AHTN) 62065GCM37 21145-77-7
Anthracene 34221GCM37 120-12-7
Anthraquinone 62066GCM37 84-65-1
Benzo[a]pyrene 34248GCM37 50-32-8
Benzophenone 62067GCM37 119-61-9
beta-Sitosterol (E) 62068GCM37 83-46-5
beta-Stigmastanol (E) 62086GCM37 19466-47-8
Bisphenol A (E) 62069GCM37 80-05-7
Bromacil 04029GCM37 314-40-9
Bromoform (E) 34288GCM37 75-25-2
Caffeine 50305GCM37 58-08-2
Camphor 62070GCM37 76-22-2
Carbaryl (E) 82680GCM37 63-25-2
Carbazole 62071GCM37 86-74-8
Chlorpyrifos 38933GCM37 2921-88-2
Cholesterol (E) 62072GCM37 57-88-5
Cotinine (E) 62005GCM37 486-56-6
Diazinon 39572GCM37 333-41-5
d-Limonene (E) 62073GCM37 5989-27-5
Fluoranthene 34377GCM37 206-44-0
Hexadydrohexamethylcyclopentabenzopyran (HHCB) 62075GCM37 1222-05-5
Indole 62076GCM37 120-72-9
Isoborneol 62077GCM37 124-76-5
Isophorone 34409GCM37 78-59-1
Isopropylbenzene (Cumene) (E) 62078GCM37 98-82-8
Isoquinoline 62079GCM37 119-65-3
Menthol 62080GCM37 89-78-1
Metalaxyl 50359GCM37 57837-19-1
Methyl salicylate 62081GCM37 119-36-8
Metolachlor 39415GCM37 51218-45-2
N,N-diethyl-meta-toluamide (DEET) 62082GCM37 134-62-3
Naphthalene 34443GCM37 91-20-3
Nonylphenol, diethoxy- (total) (E) 62083GCM37 26027-38-2
Octylphenol, diethoxy- (E) 61705GCM37 26636-32-8
Octylphenol, monoethoxy- (E) 61706GCM37 26636-32-8
para-Nonylphenol (total) (E) 62085GCM37 84852-15-3
p-Cresol 62084GCM37 106-44-5
Pentachlorophenol (E) 34459GCM37 87-86-5
Phenanthrene 34462GCM37 85-01-8
Phenol 34466GCM37 108-95-2
Prometon 04037GCM37 1610-18-0
Pyrene 34470GCM37 129-00-0
Tetrachloroethylene (E) 34476GCM37 127-18-4
Tri(2-butoxyethyl)phosphate (E) 62093GCM37 78-51-3
Tri(2-chloroethyl)phosphate 62087GCM37 115-96-8
Tributyl phosphate 62089GCM37 126-73-8
Triclosan 62090GCM37 3380-34-5
Triethyl citrate (ethyl citrate) 62091GCM37 77-93-0
Triphenyl phosphate 62092GCM37 115-86-6
Tris(dichlorisopropyl)phosphate 62088GCM37 13674-87-8
Lab Schedule 2001 - Pesticides determinations by SPE and GCMS, Filtered
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
2,6-Diethylaniline 82660GCM35 579-66-8
Acetochlor 49260GCM33 34256-82-1
Alachlor 46342GCM35 15972-60-8
alpha-HCH 34253GCM35 319-84-6
Atrazine 39632GCM35 1912-24-9
Azinphos-methyl (E) 82686GCM35 86-50-0
Benfluralin 82673GCM35 1861-40-1
Butylate 04028GCM35 2008-41-5
Carbaryl (E) 82680GCM35 63-25-2
Carbofuran (E) 82674GCM35 1563-66-2
Chlorpyrifos 38933GCM35 2921-88-2
cis-Permethrin 82687GCM35 54774-45-7
Cyanazine 04041GCM35 21725-46-2
Dacthal 82682GCM35 1861-32-1
Deethylatrazine (Desethyl atrazine) (CIAT) (E) 04040GCM35 6190-65-4
Desulfinylfipronil 62170GCM31 not assigned
Desulfinlfipronil Amide (E) 62169GCM31 not assigned
Diazinon 39572GCM35 333-41-5
Dieldrin 39381GCM35 60-57-1
Disulfoton (E) 82677GCM35 298-04-4
EPTC 82668GCM35 759-94-4
Ethalfluralin 82663GCM35 55283-68-6
Ethoprophos 82672GCM35 13194-48-4
Fipronil (E) 62166GCM31 120068-37-3
Fipronil Sulfide 62167GCM31 120067-83-6
Fipronil Sulfone 62168GCM31 120068-36-2
Fonofos 04095GCM35 944-22-9
Lindane 39341GCM35 58-89-9
Linuron 82666GCM35 330-55-2
Malathion 39532GCM35 121-75-5
Metolachlor 39415GCM35 51218-45-2
Metribuzin 82630GCM35 21087-64-9
Molinate 82671GCM35 2212-67-1
Napropamide 82684GCM35 15299-99-7
p,p^-DDE 34653GCM35 72-55-9
Parathion 39542GCM35 56-38-2
Parathion-methyl 82667GCM35 298-00-0
Pebulate 82669GCM35 1114-71-2
Pendimethalin 82683GCM35 40487-42-1
Phorate 82664GCM35 298-02-2
Prometon 04037GCM35 1610-18-0
Propachlor 04024GCM35 1918-16-7
Propanil 82679GCM35 709-98-8
Propargite 82685GCM35 2312-35-8
Propyzamide (Pronamide) 82676GCM35 23950-58-5
Simazine 04035GCM35 122-34-9
Tebuthiuron 82670GCM35 34014-18-1
Terbacil (E) 82665GCM35 5902-51-2
Terbufos 82675GCM35 13071-79-9
Thiobencarb 82681GCM35 28249-77-6
Triallate 82678GCM35 2303-17-5
Trifluralin 82661GCM35 1582-09-8
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
Lab Schedule 2033 - NAWQA ACT/ULUG Selected, Filtered Pesticides and Degradates (LS2003 plus 20 compounds)
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1-Naphthol (E) 49295GCM39 90-15-3
2,6-Diethylaniline 82660GCM35 579-66-8
2-Chloro-2,6-diethylacetanilide 61618GCM39 6967-29-9
2-Ethyl-6-methylaniline (E) 61620GCM39 24549-06-2
3,4-Dichloroaniline (E) 61625GCM39 95-76-1
3,5-Dichloroaniline 61627GCM39 626-43-7
4-Chloro-2-methylphenol (E) 61633GCM39 1570-64-5
Acetochlor 49260GCM33 34256-82-1
Alachlor 46342GCM35 15972-60-8
alpha-Endosulfan (endosulfan I) 34362GCM39 959-98-8
Atrazine 39632GCM35 1912-24-9
Azinphos-methyl 82686GCM35 86-50-0
Azinphos-methyl-oxon 61635GCM39 961-22-8
Benfluralin 82673GCM35 1861-40-1
Carbaryl (E) 82680GCM35 63-25-2
Carbofuran (E) 82674GCM35 1563-66-2
Chlorpyrifos 38933GCM35 2921-88-2
Chlorpyrifos, oxygen analog (E) 61636GCM39 5598-15-2
cis-Permethrin 82687GCM35 54774-45-7
cis-Propiconazole (E) - not tested by OBSP at this time 79846GCM40 000-02-12
Cyanazine 04041GCM35 21725-46-2
Cyfluthrin (E) 61585GCM39 68359-37-5
Cyhalothrin (E) 61595GCM39 91465-08-6
Cypermethrin (E) 61586GCM39 52315-07-8
Dacthal 82682GCM35 1861-32-1
Deethylatrazine (Desethyl atrazine) (2-chloro-4-isopropylamino-6-s-triazine) (E) 04040GCM35 6190-65-4
Desulfinylfipronil 62170GCM29 000-03-08
Desulfinylfipronil amide - Insufficient data has been collected for this compound. 62169GCM29 000-03-09
Diazinon 39572GCM35 333-41-5
Diazinon, oxygen analog 61638GCM14 962-58-3
Dichlorovos (Dichlorvos) (E) 38775GCM39 62-73-7
Dicrotophos (E) 38454GCM39 141-66-2
Dieldrin 39381GCM35 60-57-1
Dimethoate (E) 82662GCM40 60-51-5
Disulfoton (E) 82677GCM35 298-04-4
Disulfoton sulfone 61640GCM39 2497-06-5
Endosulfan sulfate 61590GCM39 1031-07-8
EPTC 82668GCM35 759-94-4
Ethion 82346GCM40 563-12-2
Ethion monoxon (E) - Insufficient data has been collected for this compound. 61644GCM39 17356-42-2
Ethoprophos 82672GCM35 13194-48-4
Fenamiphos 61591GCM39 22224-92-6
Fenamiphos sulfone 61645GCM39 31972-44-8
Fenamiphos sulfoxide (E) 61646GCM39 31972-43-7
Fipronil 62166GCM29 120068-37-3
Fipronil sulfide 62167GCM29 120067-83-6
Fipronil sulfone 62168GCM29 120068-36-2
Fonofos 04095GCM35 944-22-9
Hexazinone 04025GCM39 51235-04-2
Iprodione (E) 61593GCM39 36734-19-7
Isofenphos 61594GCM39 25311-71-1
Malaoxon 61652GCM39 1634-78-2
Malathion 39532GCM35 121-75-5
Metalaxyl 61596GCM39 57837-19-1
Methidathion (Supracide) 61598GCM39 950-37-8
Metolachlor 39415GCM35 51218-45-2
Metribuzin 82630GCM35 21087-64-9
Molinate 82671GCM35 2212-67-1
Myclobutanil 61599GCM39 88671-89-0
Oxyfluorfen 61600GCM39 42874-03-3
Paraoxon-methyl (E) 61664GCM39 950-35-6
Parathion-methyl 82667GCM35 298-00-0
Pendimethalin 82683GCM35 40487-42-1
Phorate 82664GCM35 298-02-2
Phorate oxon (E) 61666GCM39 2600-69-3
Phosmet (Imidan) (E) 61601GCM39 732-11-6
Phosmet oxon (E) 61668GCM39 3735-33-9
Prometon 04037GCM35 1610-18-0
Prometryn 04036GCM39 7287-19-6
Propanil 82679GCM35 709-98-8
Propargite 82685GCM35 2312-35-8
Propyzamide (Pronamide) 82676GCM35 23950-58-5
Simazine 04035GCM35 122-34-9
Tebuconazole - not tested by OBSP at this time 62852GCM14 107534-96-3
Tebuthiuron 82670GCM35 34014-18-1
Tefluthrin (E) 61606GCM39 79538-32-2
Terbufos 82675GCM35 13071-79-9
Terbufos-O-analogue sulfone 61674GCM39 56070-15-6
Terbuthylazine 04022GCM39 5915-41-3
Thiobencarb 82681GCM35 28249-77-6
trans-Propiconazole (E) - not tested by OBSP at this time 79847GCM40 not assigned
Tribufos (S,S,S-Tributylphosphorotrithioate (DEF)) (E) 61610GCM39 78-48-8
Trifluralin 82661GCM35 1582-09-8
Lab Schedule 2060 - Polar Pesticides and Metabolites by SPE and HPLC/MS, Filtered
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
2,4-D 39732LCM29 94-75-7
2,4-D methyl ester 50470LCM29 1928-38-7
2,4-DB (E) 38746LCM29 94-82-6
2-Hydroxy-4-isopropylamino-6-ethylamino-s-triazine {OIET} {2-Hydroxyatrazine} (E) 50355LCM29 2163-68-0
3(4-chlorophenyl)-1-methyl urea 61692LCM29 5352-88-5
3-Hydroxycarbofuran 49308LCM29 16655-82-6
Acifluorfen 49315LCM29 50594-66-6
Aldicarb (E) 49312LCM29 116-06-3
Aldicarb sulfone (E) 49313LCM29 1646-88-4
Aldicarb sulfoxide (E) 49314LCM29 1646-87-3
Atrazine 39632LCM29 1912-24-9
Bendiocarb 50299LCM29 22781-23-3
Benomyl 50300LCM29 17804-35-2
Bensulfuron-methyl 61693LCM29 83055-99-6
Bentazon (E) 38711LCM29 25057-89-0
Bromacil (E) 04029LCM29 314-40-9
Bromoxynil (E) 49311LCM29 1689-84-5
Caffeine 50305LCM29 58-08-2
Carbaryl 49310LCM29 63-25-2
Carbofuran 49309LCM29 1563-66-2
Chloramben, methyl ester (E) 61188LCM29 7286-84-2
Chlorimuron ethyl (E) 50306LCM29 90982-32-4
Clopyralid 49305LCM29 1702-17-6
Cycloate (E) 04031LCM29 1134-23-2
Dacthal monoacid 49304LCM29 887-54-7
2-Chloro-4-isopropylamino-6-amino-s-triazine {CIAT} {Deethylatrazine} {Desethyl atrazine} (E) 04040LCM29S 6190-65-4
Chlordiamino-s-triazine {CAAT} {Deethyldeisopropylatrazine} (E) 04039LCM29 3397-62-4
2-Chloro-6-ethylamino-4-amino-s-triazine {CEAT} {Deisopropylatrazine} (E) 04038LCM29 1007-28-9
Dicamba 38442LCM29 1918-00-9
Dichloroprop (Dichlorprop) 49302LCM29 120-36-5
Dinoseb 49301LCM29 88-85-7
Diphenamid 04033LCM29 957-51-7
Diuron 49300LCM29 330-54-1
Fenuron 49297LCM29 101-42-8
Flumetsulam (E) 61694LCM29 98967-40-9
Fluometuron 38811LCM29 2164-17-2
Imazaquin (E) 50356LCM29 81335-37-7
Imazethapyr (E) 50407LCM29 81335-77-5
Imidacloprid 61695LCM29 138261-41-3
Linuron 38478LCM29 330-55-2
MCPA 38482LCM29 94-74-6
MCPB (E) 38487LCM29 94-81-5
Metalaxyl 50359LCM29 57837-19-1
Methiocarb (E) 38501LCM29 2032-65-7
Methomyl (E) 49296LCM29 16752-77-5
Metsulfuron methyl (E) 61697LCM29 74223-64-6
Neburon 49294LCM29 555-37-3
Nicosulfuron (Accent) (E) 50364LCM29 111991-09-4
Norflurazon 49293LCM29 27314-13-2
Oryzalin 49292LCM29 19044-88-3
Oxamyl 38866LCM29 23135-22-0
Picloram 49291LCM29 1918-02-1
Propham 49236LCM29 122-42-9
Propiconazole (Tilt) 50471LCM29 60207-90-1
Propoxur (E) 38538LCM29 114-26-1
Siduron 38548LCM29 1982-49-6
Sulfometuron methyl 50337LCM29 74222-97-2
Tebuthiuron 82670LCM29 34014-18-1
Terbacil (E) 04032LCM29 5902-51-2
Triclopyr 49235LCM29 55335-06-3
Lab Schedule 2080 - Pharmaceuticals by HPLC-MS, Water, Filtered
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1,7-Dimethylxanthine 6203000021 611-59-6
Acetaminophen 6200000021 103-90-2
Albuterol 6202000021 18559-94-9
Caffeine 5030500059 58-08-2
Carbamazepine 6279300021 298-46-4
cis-Diltiazem-HCl 6200800021 33286-22-5
Codeine 6200300021 76-57-3
Cotinine 6200500059 486-56-6
Diphenhydramine-HCl 6279600021 147-24-0
Fluoxetine-HCl 6201100021 59333-67-4
Nifedipine-oxidized 6200400021 not assigned
Ranitidine-HCl - Insufficient data collected for this compound. 6201900021 71130-06-8
Sulfamethoxazole 6202100021 723-46-6
Thiabendazole 6280100021 148-79-8
Trimethoprim 6202300021 738-70-5
Warfarin 6202400021 81-81-2
Lab Schedule 4024 - Gasoline Oxygenates, Un-acidified, Wat, Unfiltered
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
Acetone 81552GCM60 67-64-1
Diisopropyl Ether 81577GCM60 108-20-3
Ethyl Tert-Butyl Ether 50004GCM60 637-92-3
Methyl Acetate 77032GCM60 79-20-9
Tert-Amyl Alcohol 77073GCM60 75-85-4
Tert-Butyl Alcohol 77035GCM60 75-65-0
Tert-Butyl Methyl Ether (MTBE) 78032GCM60 1634-04-4
Tert-Pentyl Methyl Ether 50005GCM60 994-05-8
Lab Schedule 2503 - NAWQA Carbon Forms - Total, Inorganic, Organic from Bed Material
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
Inorganic Sediment Carbon 49270COUL2 not assigned
Organic Sediment Carbon 4927100057 not assigned
Total Sediment Carbon 4927200040 not assigned
Lab Code 114 - Total Organic Carbon, Whole Water Recoverable
Choose the link below Parameter CAS#
TOC 00680 OX009 not assigned

Lab Code 2125 - Oil and Grease

Choose the link below Parameter CAS#
Oil and Grease 00556 00101 not assigned

Lab Code 2322 - Phenol, Total Recoverable

Choose the link below Parameter CAS#
Phenol 32730 00088 not assigned

Lab Code 2612 - Dissolved Organic Carbon, Filtered, Sulfuric Acid Preserved

Choose the link below Parameter CAS#
DOC 00681 OX006 not assigned

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Questions/Comments?  dbeaty@usgs.gov