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Cumulative Time Series Charts and Statistical Summaries
January 2002 to December 2007

Time Series Charts
The time series charts provided in this section have a different symbol for each level. The recoveries shown on the chart do not include false positive data. A LOWESS, LOcally WEighted Scatterplot Smoothing, (Cleveland and McGill 1984b, Cleveland, 1985) line is used to help observe any patterns of recovery over time.

NOTE: Charts are presented as graphical images. Use the back button on your browser to return to analyte choices. If the graphic is fit to one page and appears in minuscule font you need to perform the following action:

Tools/Internet Options/Advanced - uncheck "Enable Automatic Image Resizing"/Apply/OK then refresh.


Statistical Summaries
There are two tables provided at the bottom of every time series chart that show statistical summaries.

Statistics for the Plotted Points
Description of the OBSP QA recoveries grouped by concentration level. The statistics in the table: mean, median, standard deviation and F-pseudosigma define bias and variability of the OBSP recoveries.

Miscellaneous Statistics for the Samples
Counts (N) of a variety of items.
Plotted - This number equals the total number in the above table.
Estimated Values - There are a number of reasons the laboratory will estimate (E) a result. If there are 100% of the results estimated the analyte is identified as a permanently estimated compound (analyte name in time series chart will be red).
Deleted Values - The laboratory may delete an entire sample or a single analyte for a number of reasons.
Spiked, Censored - A term for those samples that were spiked and correctly reported as less than a reporting level (possibly a raised reporting level) - the expected concentration was at a lower concentration than the censored result provided by the laboratory.
Spiked - The number of times the OBSP has submitted this analyte to the NWQL.
False Negative - The number of times the laboratory reports this analyte as not present in the sample when it is there. If the percentage is greater than 20% we include the occurrence in the OBSP Summaries (Internal access only)
Not Spiked - The number of times the OBSP has submitted a sample to the appropriate schedule, without this analyte.
False Positive - The number of times the laboratory reports this analyte as present when it is not in the sample.
OBSP plans on providing more False positive and false negative information in the future. An example of the statistical summary table is not provided with the time series chart example below. Please use the tables below the example to view time series charts and their respective statistical summaries by clicking on an analyte of your choice.

Data Provisional: Subject to change.

These charts are presented in percent recovery and Organized Numerically by NWQL Schedule (individual lab codes are grouped at the end).
Estimated Analytes are designated with an (E) after the analyte name in the list below.

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 1319 - Organophosphorus Pesticides, Whole Water Recoverable
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
Carbophenothion 39786B 786-19-6
Chlorpyrifos 38932A 2921-88-2
Diazinon 39570B 333-41-5
Disulfoton 39011A 298-04-4
Ethion 39398B 563-12-2
Fonofos 82614C 944-22-9
Malathion 39530B 121-75-5
Parathion 39540B 56-38-2
Parathion-methyl 39600B 298-00-0
Phorate 39023A 298-02-2
S,S,S-Tributylphosphorotrithioate (DEF) 39040A 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 39330C 309-00-2
Alpha-endosulfan (Endosulfan I) 39388C 959-98-8
Chlordane, Technical mix 39350B 57-74-9
Deildrin 39380C 60-57-1
Endrin 39390C 72-20-8
Heptachlor Epoxide 39420C 1024-57-3
Heptachlor 39410C 76-44-8
Lindane 39340C 58-89-9
Mirex 39755B 2385-85-5
p,p'-DDD 39360C 72-54-8
p,p'-DDE 39365C 72-55-9
p,p'-DDT 39370C 50-29-3
p,p'-Methoxychlor 39480B 72-43-5
Toxaphene 39400B 8001-35-2
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 34551A 120-82-1
1,2-Dichlorobenzene 34536A 95-50-1
1,2-Diphenylhydrazine 82626A 122-66-7
1,3-Dichlorobenzene 34566A 541-73-1
1,4-Dichlorobenzene 34571A 106-46-7
2,4,6-Trichlorophenol 34621A 88-06-2
2,4-Dichlorophenol 34601A 120-83-2
2,4-Dimethylphenol (Dichlorprop) 34606A 105-67-9
2,4-Dinitrophenol 34616A 51-28-5
2,4-Dinitrotoluene 34611A 121-14-2
2,6-Dinitrotoluene 34626A 606-20-2
2-Chloronaphthalene 34581AA 91-58-7
2-Chlorophenol 34586A 95-57-8
2-Nitrophenol 34591A 88-75-5
3,3'-Dichlorobenzindine 34631A 91-94-1
4,6-Dinitro-2-methylphenol 34657A 534-52-1
4-Bromophenylphenylether 34636A 101-55-3
4-Chloro-3-methylphenol 34452A 59-50-7
4-Chlorophenyl phenyl ether 34641B 7005-72-3
4-Nitrophenol 34646A 100-02-7
Acenaphthene 34205A 83-32-9
Acenaphthylene 34200A 208-96-8
Anthracene 34220A 120-12-7
Benz[a]anthracene 34526A 56-55-3
Benzidine - Insufficient Data 39120A 92-87-5
Benzo[a]pyrene 34247A 50-32-8
Benzo[b]fluoranthene 34230A 205-99-2
Benzo[ghi]perylene 34521A 191-24-2
Benzo[k]fluoranthene 34242A 207-08-9
bis(2-Chloroethoxy)methane 34278A 111-91-1
Bis(2-Chloroethyl)ether 34273A 111-44-4
bis(2-chloroisopropyl) ether 34283A 108-60-1
Bis(2-Ethylhexyl) phthalate 39100A 117-81-7
Butylbenzyl phthalate 34292A 85-68-7
Chrysene 34320A 218-01-9
Dibenz[a,h]anthracene 34556A 53-70-3
Diethyl phthalate 34336A 84-66-2
Dimethyl phthalate 34341A 131-11-3
Di-n-butyl phthalate 39110A 84-74-2
Di-n-octyl phthalate 34596A 117-84-0
Fluroranthene 34376A 206-44-0
Fluorene 34381A 86-73-7
Hexachlorobenzene 39700A 118-74-1
Hexachlorobutadiene 39702A 87-68-3
Hexachlorocyclopentadiene 34386A 77-47-4
Hexachloroethane 34396A 67-72-1
Indeno[1,2,3-cd]pyrene 34403A 193-39-5
Isophorone 34408A 78-59-1
Naphthalene 34696A 91-20-3
Nitrobenzene 34447A 98-95-3
n-Nitrosodimethylamine 34438A 62-75-9
n-Nitrosodi-n-propylamine 34428A 621-64-7
N-Nitrosodiphenylamine 34433A 86-30-6
Pentachlorophenol 39032A 87-86-5
Penanthrene 34461A 85-01-8
Phenol 34694A 108-95-2
Pyrene 34469A 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 34572A 106-46-7
17-beta-Estradiol 62053A 50-28-2
1-Methylnaphthalene 62054A 90-12-0
2,6-Dimethylnaphthalene 62055A 581-42-0
2-Methylnaphthalene 62056A 91-57-6
3-beta-Coprostanol 62057A 360-68-9
3-Methyl-1(H)-indole (Skatole) 62058A 83-34-1
3-tert-Butyl-4-hydroxy anisole (BHA) 62059A 25013-16-5
4-Cumylphenol 62060A 599-64-4
4-n-Octylphenol 62061A 1806-26-4
4-tert-Octylphenol 62063A 136-85-6
5-Methyl-1H-benzotriazole 62062A 140-66-9
Acetophenone 62064A 98-86-2
Acetyl hexamethyl tetrahydronaphthalene (AHTN) 62065A 21145-77-7
Anthracene 34221A 120-12-7
Anthraquinone 62066A 84-65-1
Benzo[a]pyrene 34248A 50-32-8
Benzophenone 62067A 119-61-9
beta-Sitosterol 62068A 83-46-5
beta-Stigmastanol 62086A 19466-47-8
Bisphenol A 62069A 80-05-7
Bromacil 04029E 314-40-9
Bromoform 34288A 75-25-2
Caffeine 50305B 58-08-2
Camphor 62070A 76-22-2
Carbaryl 82680F 63-25-2
Carbazole 62071A 86-74-8
Chlorpyrifos 38933F 2921-88-2
Cholesterol 62072A 57-88-5
Cotinine 62005A 486-56-6
Diazinon 39572F 333-41-5
d-Limonene 62073A 5989-27-5
Equilenin 62074A 517-09-9
Estrone 62484A 53-16-7
Ethynyl estradiol 62052A 57-63-6
Fluoranthene 34377A 206-44-0
Hexadydrohexamethylcyclopentabenzopyran (HHCB) 62075A 1222-05-5
Indole 62076A 120-72-9
Isoborneol 62077A 124-76-5
Isophorone 34409A 78-59-1
Isopropylbenzene (Cumene) 62078A 98-82-8
Isoquinoline 62079A 119-65-3
Menthol 62080A 89-78-1
Metalaxyl 50359B 57837-19-1
Methyl salicylate 62081A 119-36-8
Metolachlor 39415F 51218-45-2
N,N-diethyl-meta-toluamide (DEET) 62082A 134-62-3
Naphthalene 34443A 91-20-3
Nonylphenol, diethoxy- (total) 62083A 26027-38-2
Octylphenol, diethoxy- 61705A 26636-32-8
Octylphenol, monoethoxy- 61706A 26636-32-8
para-Nonylphenol (total) 62085A 84852-15-3
p-Cresol 62084A 106-44-5
Pentachlorophenol 34459A 87-86-5
Phenanthrene 34462A 85-01-8
Phenol 34466A 108-95-2
Prometon 04037F 1610-18-0
Pyrene 34470A 129-00-0
Tetrachloroethylene 34476A 127-18-4
Tri(2-butoxyethyl)phosphate 62093A 78-51-3
Tri(2-chloroethyl)phosphate 62087A 115-96-8
Tributyl phosphate 62089A 126-73-8
Triclosan 62090A 3380-34-5
Triethyl citrate (ethyl citrate) 62091A 77-93-0
Triphenyl phosphate 62092A 115-86-6
Tris(dichlorisopropyl)phosphate 62088A 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 82660D 579-66-8
Acetochlor 49260D 34256-82-1
Alachlor 46342D 15972-60-8
alpha-HCH 34253D 319-84-6
Atrazine 39632D 1912-24-9
Azinphos-methyl 82686D 86-50-0
Benfluralin 82673D 1861-40-1
Butylate 04028D 2008-41-5
Carbaryl 82680D 63-25-2
Carbofuran 82674D 1563-66-2
Chlorpyrifos 38933D 2921-88-2
cis-Permethrin 82687D 54774-45-7
Cyanazine 04041D 21725-46-2
Dacthal 82682D 1861-32-1
Deethylatrazine (Desethyl atrazine) 04040D 6190-65-4
Desulfinylfipronil 62170B Not Assigned
Desulfinlfipronil Amide 62169B Not Assigned
Diazinon 39572D 333-41-5
Dieldrin 39381D 60-57-1
Disulfoton 82677D 298-04-4
EPTC 82668D 759-94-4
Ethalfluralin 82663D 55283-68-6
Ethoprophos 82672D 13194-48-4
Fipronil 62166B 120068-37-3
Fipronil Sulfide 62167B 120067-83-6
Fipronil Sulfone 62168B 120068-36-2
Fonofos 04095D 944-22-9
Lindane 39341D 58-89-9
Linuron 82666D 330-55-2
Malathion 39532D 121-75-5
Metolachlor 39415D 51218-45-2
Metribuzin 82630D 21087-64-9
Molinate 82671D 2212-67-1
Napropamide 82684D 15299-99-7
p,p^-DDE 34653D 72-55-9
Parathion 39542D 56-38-2
Parathion-methyl 82667D 298-00-0
Pebulate 82669D 1114-71-2
Pendimethalin 82683D 40487-42-1
Phorate 82664D 298-02-2
Prometon 04037D 1610-18-0
Propachlor 04024D 1918-16-7
Propanil 82679D 709-98-8
Propargite 82685D 2312-35-8
Propyzamide (Pronamide) 82676D 23950-58-5
Simazine 04035D 122-34-9
Tebuthiuron 82670D 34014-18-1
Terbacil 82665D 5902-51-2
Terbufos 82675D 13071-79-9
Thiobencarb 82681D 28249-77-6
Triallate 82678D 2303-17-5
Trifluralin 82661D 1582-09-8
Lab Schedule 2003 - NAWQA ACT/ULUG Selected, Filtered Pesticides and Degradates
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 77562D 630-20-6
1,1,1-Trichloroethane 34506E 71-55-6
1,1,2,2-Tetrachloroethane 34516D 79-34-5
1,1,2-Trichloroethane 34511E 79-00-5
1,1,2-Trichlorotrifluoroethane 77652D 76-13-1
1,1-Dichloroethane 34496E 75-34-3
1,1-Dichloroethylene 34501E 75-35-4
1,1-Dichloropropene 77168D 563-58-6
1,2,3,4-Tetramethylbenzene 49999A 488-23-3
1,2,3,5-Tetramethylbenzene 50000A 527-53-7
1,2,3-Trichlorobenzene 77613D 87-61-6
1,2,3-Trichloropropane 77443D 96-18-4
1,2,3-Trimethylbenzene 77221A 526-73-8
1,2,4-Trichlorobenzene 34551F 120-82-1
1,2,4-Trimethylbenzene 77222D 95-63-6
1,2-Dibromo-3-chloropropane 82625F 96-12-8
1,2-Dibromoethane 77651G 106-93-4
1,2-Dichlorobenzene 34536F 95-50-1
1,2-Dichloroethane 32103E 107-06-2
1,2-Dichloropropane 34541E 78-87-5
1,3,5-Trimethylbenzene 77226D 108-67-8
1,3-Dichlorobenzene 34566E 541-73-1
1,3-Dichloropropane 77173D 142-28-9
1,4-Dichlorobenzene 34571F 106-46-7
2,2-Dichloropropane 77170D 594-20-7
2-Butanone 81595B 78-93-3
2-Chlorotoluene 77275D 95-49-8
2-Hexanone 77103B 591-78-6
3-Chloropropene 78109A 107-05-1
4-Chlorotoluene 77277D 106-43-4
4-Isopropyl-1-methylbenzene (Cymene) 77356D 99-87-6
4-Methyl-2-pentanone 78133B 108-10-1
Acetone 81552B 67-64-1
Acrylonitrile 34215B 107-13-1
Benzene 34030E 71-43-2
Bromobenzene 81555D 108-86-1
Bromochloromethane 77297D 74-97-5
Bromodichloromethane 32101E 75-27-4
Bromoethene 50002A 593-60-2
Bromoform 32104E 75-25-2
Bromomethane 34413D 74-83-9
Butylbenzene 77342D 104-51-8
Carbon disulfide 77041B 75-15-0
Chlorobenzene 34301E 108-90-7
Chloroethane 34311D 75-00-3
Chloroform 32106E 67-66-3
Chloromethane 34418D 74-87-3
cis-1,2-Dichloroethylene 77093E 156-59-2
cis-1,3-Dichloropropene 34704D 10061-01-5
Dibromochloromethane 32105E 124-48-1
Dibromomethane 30217D 74-95-3
Dichlorodifluoromethane 34668D 75-71-8
Dichloromethane 34423E 75-09-2
Diethyl ether 81576A 60-29-7
Diisopropyl ether 81577A 108-20-3
Ethyl methacrylate 73570A 97-63-2
Ethyl tert-butyl ether 50004A 637-92-3
Ethylbenzene 34371E 100-41-4
Hexachlorobutadiene 39702E 87-68-3
Hexachloroethane 34396B 67-72-1
Isopropylbenzene (Cumene) 77223D 98-82-8
m- and p-Xylene 85795D 000-01-10
Methyl acrylate 49991A 96-33-3
Methyl acrylonitrile 81593A 126-98-7
Methyl iodide 77424A 74-88-4
Methyl methacrylate 81597A 80-62-6
n-Propylbenzene 77224D 103-65-1
Naphthalene 34696E 91-20-3
o-Ethyl toluene 77220A 611-14-3
o-Xylene 77135D 95-47-6
sec-Butylbenzene 77350D 135-98-8
Styrene 77128E 100-42-5
tert-Butyl methyl ether 78032D 1634-04-4
tert-Butylbenzene 77353D 98-06-6
tert-Pentyl methyl ether 50005A 994-05-8
Tetrachloroethylene 34475E 127-18-4
Tetrachloromethane 32102E 56-23-5
Tetrahydrofuran 81607A 109-99-9
Toluene 34010E 108-88-3
trans-1,2-Dichloroethylene 34546E 156-60-5
trans-1,3-Dichloropropene 34699D 10061-02-6
trans-1,4-Dichloro-2-butene 73547A 110-57-6
Trichloroethylene 39180E 79-01-6
Trichlorofluoromethane 34488D 75-69-4
Vinyl chloride 39175E 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 49295C 90-15-3
2,6-Diethylaniline 82660D 579-66-8
2-Chloro-2,6-diethylacetanilide 61618A 6967-29-9
2-Ethyl-6-methylaniline 61620A 24549-06-2
3,4-Dichloroaniline 61625A 95-76-1
3,5-Dichloroaniline 61627A 626-43-7
4-Chloro-2-methylphenol 61633A 1570-64-5
Acetochlor 49260D 34256-82-1
Alachlor 46342D 15972-60-8
alpha-Endosulfan (endosulfan I) 34362A 959-98-8
Atrazine 39632D 1912-24-9
Azinphos-methyl 82686D 86-50-0
Azinphos-methyl-oxon 61635A 961-22-8
Benfluralin 82673D 1861-40-1
Carbaryl 82680D 63-25-2
Carbofuran 82674D 1563-66-2
Chlorpyrifos 38933D 2921-88-2
Chlorpyrifos, oxygen analog 61636A 5598-15-2
cis-Permethrin 82687D 54774-45-7
cis-Propiconazole 79846A 000-02-12
Cyanazine 04041D 21725-46-2
Cyfluthrin 61585A 68359-37-5
Cyhalothrin 61595A 91465-08-6
Cypermethrin 61586A 52315-07-8
Dacthal 82682D 1861-32-1
Deethylatrazine (Desethyl atrazine) (2-chloro-4-isopropylamino-6-s-triazine) 04040D 6190-65-4
Desulfinylfipronil 62170A 000-03-08
Desulfinylfipronil amide 62169A 000-03-09
Diazinon 39572D 333-41-5
Diazinon, oxygen analog 61638A 962-58-3
Dichlorovos (Dichlorvos) 38775A 62-73-7
Dicrotophos 38454A 141-66-2
Dieldrin 39381D 60-57-1
Dimethoate 82662F 60-51-5
Disulfoton 82677D 298-04-4
Disulfoton sulfone 61640A 2497-06-5
Endosulfan sulfate 61590A 1031-07-8
EPTC 82668D 759-94-4
Ethion 82346B 563-12-2
Ethion monoxon 61644A 17356-42-2
Ethoprophos 82672D 13194-48-4
Fenamiphos 61591A 22224-92-6
Fenamiphos sulfone 61645A 31972-44-8
Fenamiphos sulfoxide 61646A 31972-43-7
Fipronil 62166A 120068-37-3
Fipronil sulfide 62167A 120067-83-6
Fipronil sulfone 62168A 120068-36-2
Fonofos 04095D 944-22-9
Hexazinone 04025B 51235-04-2
Iprodione 61593A 36734-19-7
Isofenphos 61594A 25311-71-1
Malaoxon 61652A 1634-78-2
Malathion 39532D 121-75-5
Metalaxyl 61596A 57837-19-1
Methidathion (Supracide) 61598A 950-37-8
Metolachlor 39415D 51218-45-2
Metribuzin 82630D 21087-64-9
Molinate 82671D 2212-67-1
Myclobutanil 61599A 88671-89-0
Oxyfluorfen 61600A 42874-03-3
Paraoxon-methyl 61664A 950-35-6
Parathion-methyl 82667D 298-00-0
Pendimethalin 82683D 40487-42-1
Phorate 82664D 298-02-2
Phorate oxon 61666A 2600-69-3
Phosmet (Imidan) 61601A 732-11-6
Phosmet oxon 61668A 3735-33-9
Prometon 04037D 1610-18-0
Prometryn 04036B 7287-19-6
Propanil 82679D 709-98-8
Propargite 82685D 2312-35-8
Propyzamide (Pronamide) 82676D 23950-58-5
Simazine 04035D 122-34-9
Tebuconazole 62852A 107534-96-3
Tebuthiuron 82670D 34014-18-1
Tefluthrin 61606A 79538-32-2
Terbufos 82675D 13071-79-9
Terbufos-O-analogue sulfone 61674A 56070-15-6
Terbuthylazine 04022D 5915-41-3
Thiobencarb 82681D 28249-77-6
trans-Propiconazole 79847A 000-02-02
Tribufos (S,S,S-Tributylphosphorotrithioate (DEF)) 61610A 78-48-8
Trifluralin 82661D 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 39732D 94-75-7
2,4-D methyl ester 50470A 1928-38-7
2,4-DB 38746C 94-82-6
2-Hydroxy-4-isopropylamino-6-ethylamino-s-triazine {OIET} {2-Hydroxyatrazine} (E) 50355A 2163-68-0
3(4-chlorophenyl)-1-methyl urea 61692A 5352-88-5
3-Hydroxycarbofuran 49308C 16655-82-6
3-Ketocarbofuran 50295A 16709-30-1
Acifluorfen 49315C 50594-66-6
Aldicarb 49312C 116-06-3
Aldicarb sulfone (E) 49313C 1646-88-4
Aldicarb sulfoxide 49314C 1646-87-3
Atrazine 39632F 1912-24-9
Bendiocarb 50299A 22781-23-3
Benomyl 50300A 17804-35-2
Bensulfuron-methyl 61693A 83055-99-6
Bentazon (E) 38711C 25057-89-0
Bromacil 04029D 314-40-9
Bromoxynil 49311C 1689-84-5
Caffeine 50305A 58-08-2
Carbaryl 49310C 63-25-2
Carbofuran 49309D 1563-66-2
Chloramben, methyl ester 61188C 7286-84-2
Chlorimuron ethyl 50306A 90982-32-4
Chlorothalonil (E) 49306C 1897-45-6
Clopyralid 49305C 1702-17-6
Cycloate 04031C 1134-23-2
Dacthal monoacid 49304C 887-54-7
2-Chloro-4-isopropylamino-6-amino-s-triazine {CIAT} {Deethylatrazine} {Desethyl atrazine} 04040F 6190-65-4
Chlordiamino-s-triazine {CAAT} {Deethyldeisopropylatrazine} 04039A 3397-62-4
2-Chloro-6-ethylamino-4-amino-s-triazine {CEAT} {Deisopropylatrazine} 04038B 1007-28-9
Dicamba 38442C 1918-00-9
Dichloroprop (Dichlorprop) 49302C 120-36-5
Dinoseb 49301C 88-85-7
Diphenamid 04033B 957-51-7
Diuron 49300C 330-54-1
Fenuron 49297C 101-42-8
Flumetsulam (E) 61694A 98967-40-9
Fluometuron 38811C 2164-17-2
Imazaquin (E) 50356A 81335-37-7
Imazethapyr (E) 50407A 81335-77-5
Imidacloprid 61695A 138261-41-3
Linuron 38478C 330-55-2
MCPA 38482C 94-74-6
MCPB 38487C 94-81-5
Metalaxyl 50359A 57837-19-1
Methiocarb 38501C 2032-65-7
Methomyl 49296C 16752-77-5
Metsulfuron methyl 61697A 74223-64-6
Neburon 49294C 555-37-3
Nicosulfuron (Accent) (E) 50364A 111991-09-4
Norflurazon 49293C 27314-13-2
Oryzalin 49292C 19044-88-3
Oxamyl 38866D 23135-22-0
Picloram 49291C 1918-02-1
Propham 49236C 122-42-9
Propiconazole (Tilt) 50471A 60207-90-1
Propoxur 38538C 114-26-1
Siduron 38548A 1982-49-6
Sulfometuron methyl 50337A 74222-97-2
Tebuthiuron 82670F 34014-18-1
Terbacil 04032B 5902-51-2
Tribenuron-methyl (E) 61159A 101200-48-0
Triclopyr 49235C 55335-06-3
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 81552C 67-64-1
Diisopropyl Ether 81577C 108-20-3
Ethyl Tert-Butyl Ether 50004C 637-92-3
Methyl Acetate 77032A 79-20-9
Tert-Amyl Alcohol 77073A 75-85-4
Tert-Butyl Alcohol 77035A 75-65-0
Tert-Butyl Methyl Ether 78032E 1634-04-4
Tert-Pentyl Methyl Ether 50005E 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 49270E not assigned
Organic Sediment Carbon NA- not assigned
Total Sediment Carbon 49272B not assigned
Lab Code 114 - Total Organic Carbon, Whole Water Recoverable
Choose the link below Parameter CAS#
TOC 00680 A not assigned

Lab Code 2125 - Oil and Grease

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

Lab Code 2322 - Phenol, Total Recoverable

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

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

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

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Questions/Comments?  dbeaty@usgs.gov