Appendix Table 1-1 

1

Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued[Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above]

Analyte CASRN Pcode Laboratory Method Reporting level1 Units

1,1,1,2-Tetrachloroethane 630-20-6 77562 USGS NWQL GCM66 0.04 μg/L

1,1,1-Trichloroethane 71-55-6 34506 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.03 ʺ

1,1,2,2-Tetrachloroethane 79-34-5 34516 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.14 ʺ

1,1,2-Trichloro-1,2,2-trifluoroethane 76-13-1 77652 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.034 ʺ

1,1,2-Trichloroethane 79-00-5 34511 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.028–0.046 ʺ

1,1-Dichloroethane 75-34-3 34496 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.044 ʺ

1,1-Dichloroethene 75-35-4 34501 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.022 ʺ

1,1-Dichloropropene 563-58-6 77168 USGS NWQL GCM66 0.03–0.04 μg/L

1,2,3,4-Tetramethylbenzene 488-23-3 49999 USGS NWQL GCM66 0.08–0.1 μg/L

1,2,3,5-Tetramethylbenzene 527-53-7 50000 USGS NWQL GCM66 0.08 μg/L

1,2,3-Trichlorobenzene 87-61-6 77613 USGS NWQL GCM66 0.06 μg/L

1,2,3-Trichloropropane 96-18-4 77443 USGS NWQL GCM66 0.12 μg/L

1,2,3-Trimethylbenzene 526-73-8 77221 USGS NWQL GCM66 0.06 μg/L

1,2,4-Trichlorobenzene 120-82-1 34551 TAL-FL GCM75 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.26 ʺ ʺ ʺ ʺ ʺ GCM66 0.08 ʺ

1,2,4-Trimethylbenzene 95-63-6 77222 USGS NWQL GCM66 0.032 μg/L

1,2-Dibromo-3-chloropropane 96-12-8 82625 TAL-FL GCM25 0.7 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.34–0.4 ʺ

1,2-Dibromoethane 106-93-4 77651 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.028–0.05 ʺ

1,2-Dichlorobenzene 95-50-01 34536 TAL-FL GM025 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.2 ʺ ʺ ʺ ʺ ʺ GCM66 0.028 ʺ

1,2-Dichloroethane 107-06-2 32103 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.08 ʺ

1,2-Dichloropropane 78-87-5 34541 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.026 ʺ

1,2-Diphenylhydrazine 122-66-7 82626 USGS NWQL GCM55 0.3 μg/L

1,3,5-Trimethylbenzene 108-67-8 77226 USGS NWQL GCM66 0.032 μg/L

Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.
2 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued [Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above] Analyte CASRN Pcode Laboratory Method Reporting level1 Units 1,3-Dichlorobenzene 541-73-1 34566 TAL-FL GCM75 0.54 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.22 ʺ ʺ ʺ ʺ ʺ GCM66 0.024 ʺ 1,3-Dichloropropane 142-28-9 77173 USGS NWQL GCM66 0.06 μg/L 1,4-Dichlorobenzene 106-46-7 34571 TAL-FL GCM75 0.64 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.22 ʺ ʺ ʺ ʺ ʺ GCM66 0.026 ʺ 2,2-Dichloropropane 594-20-7 77170 USGS NWQL GCM66 0.06 μg/L 2,4,5-Trichlorophenol 95-95-4 77687 TAL-FL GM025 1.3–4.0 μg/L 2,4,6-Trichlorophenol 88-06-2 34621 TAL-FL GM025 1.2–3.7 μg/L ʺ ʺ ʺ USGS NWQL GCM56 0.34 ʺ 2,4-Dichlorophenol 120-83-2 34601 TAL-FL GM025 1.1–3.4 μg/L ʺ ʺ ʺ USGS NWQL GCM56 0.36 ʺ 2,4-Dimethylphenol 105-67-9 34606 TAL-FL GM025 1.7–5.1 μg/L ʺ ʺ ʺ USGS NWQL GCM56 0.8 ʺ 2,4-Dinitrophenol 51-28-5 34616 TAL-FL GM025 14–43.0 μg/L ʺ ʺ ʺ USGS NWQL GCM56 1.4 ʺ 2,4-Dinitrotoluene 121-14-2 34611 TAL-FL GM025 1.2–3.7 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.56 ʺ 2,6-Dinitrotoluene 606-20-2 34626 TAL-FL GM025 2.0–6.3 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.4 ʺ 2-Chloronaphthalene 91-58-7 34581 TAL-FL GM025 0.15–0.46 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.16 ʺ 2-Chlorophenol 95-57-8 34586 TAL-FL GM025 1.4–4.3 μg/L ʺ ʺ ʺ USGS NWQL GCM56 0.26 ʺ 2-Chlorotoluene 95-49-8 77275 USGS NWQL GCM66 0.028 μg/L 2-Ethyltoluene 611-14-3 77220 USGS NWQL GCM66 0.032 μg/L

2-Methyl-4,6-dinitrophenol 534-52-1 34657 USGS NWQL GCM56 0.76 μg/L

2-Methylnaphthalene 91-57-6 30194 TAL-FL GM025 0.2–0.63 μg/L

2-Naphthylamine 91-59-8 78118 TAL-FL GM025 1.4–4.3 μg/L

2-Nitrophenol 88-75-5 34591 TAL-FL GM025 1.9–5.7 μg/L

 ʺ ʺ ʺ USGS NWQL GCM56 0.4 ʺ

3,3ʹ-Dichlorobenzidine 91-94-1 34631 TAL-FL GM025 1.9–5.7 μg/L

 ʺ ʺ ʺ USGS NWQL GCM55 0.42 ʺ

3-Chloropropene 107-05-1 78109 USGS NWQL GCM66 0.08 μg/L

3-Nitroaniline 99-09-2 78300 TAL-FL GM025 1.4–4.3 μg/L
Appendix Table 1-1 

3

Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued[Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above]

Analyte CASRN Pcode Laboratory Method Reporting level1 Units

4-Bromophenyl phenyl ether 101-55-3 34636 TAL-FL GM025 0.18–0.54 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.24 ʺ

4-Chloro-3-methylphenol 59-50-7 34452 TAL-FL GM025 1.9–6.0 μg/L

 ʺ ʺ ʺ USGS NWQL GCM56 0.55 ʺ

4-Chloroaniline 106-47-8 30343 TAL-FL GM025 1.8–5.4 μg/L

4-Chlorophenyl phenyl ether 7005-72-3 34641 TAL-FL GM025 1.0–3.1 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.34 ʺ

4-Chlorotoluene 106-43-4 77277 USGS NWQL GCM66 0.042 μg/L

4-Isopropyltoluene 99-87-6 77356 USGS NWQL GCM66 0.06 μg/L

4-Nitroaniline 100-01-6 30196 TAL-FL GM025 1.9–5.7 μg/L

4-Nitrophenol 100-02-7 34646 TAL-FL GM025 3.1–9.7 μg/L

 ʺ ʺ ʺ USGS NWQL GCM56 0.51 ʺ

Acenaphthene 83-32-9 34205 TAL-FL GM025 0.19–0.57 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.28 ʺ

Acenaphthylene 208-96-8 34200 TAL-FL GM025 0.14–0.43 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ

Acetone 67-64-1 81552 TAL-FL GCM25 3.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 3.4 ʺ

Acetophenone 98-86-2 62811 TAL-FL GM025 0.16–0.49 μg/L

Acrylonitrile 107-13-1 34215 USGS NWQL GCM66 0.8 μg/L

Anthracene 120-12-7 34220 TAL-FL GM025 0.17–0.51 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.39 ʺ

Atrazine 1912-24-9 39630 TAL-FL GM025 0.23–0.71 μg/L

Benzaldehyde 100-52-7 81554 TAL-FL GM025 0.39–1.2 μg/L

Benzene 71-43-2 34030 TAL-CO GCM25 0.065 μg/L

 ʺ ʺ ʺ TAL-FL GCM25 0.3–0.34 ʺ ʺ ʺ ʺ USGS NWQL GCM66 0.026 ʺ

Benzo[a]anthracene 56-55-3 34526 TAL-FL GM025 0.16–0.49 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.26 ʺ

Benzo[a]pyrene 50-32-8 34247 TAL-FL GM025 0.19–0.57 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.33 ʺ

Benzo[b]fluoranthene 205-99-2 34230 TAL-FL GM025 0.19–0.6 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ

Benzo[g,h,i]perylene 191-24-2 34521 USGS NWQL GCM57 0.38 μg/L

Benzo[k]fluoranthene 207-08-9 34242 TAL-FL GM025 0.35–1.1 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ
4 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued [Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above] Analyte CASRN Pcode Laboratory Method Reporting level1 Units Benzyl n-butylphthalate 85-68-7 34292 TAL-FL GM025 2.5–7.7 μg/L ʺ ʺ ʺ USGS NWQL GCM57 1.8 ʺ Biphenyl 92-52-4 64172 TAL-FL GM025 0.19–0.57 μg/L bis(2-chloroethyl)ether 111-44-4 34273 TAL-FL GM025 1.9–5.7 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ bis(2-chloroisopropyl) ether 39638-32-9 34283 TAL-FL GM025 1.9–5.7 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.14 ʺ bis-2-chloroethoxymethane 111-91-1 34278 TAL-FL GM025 0.22–0.69 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.24 ʺ bis-2-ethylhexylphthalate 117-81-7 39100 TAL-FL GM025 6.5–20 μg/L ʺ ʺ ʺ USGS NWQL GCM57 2.0 ʺ Bromobenzene 108-86-1 81555 USGS NWQL GCM66 0.022 μg/L Bromochloromethane 74-97-5 77297 USGS NWQL GCM66 0.06 μg/L Bromodichloromethane 75-27-4 32101 TAL-FL GCM25 0.5 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.034 ʺ Bromoethene 593-60-2 50002 USGS NWQL GCM66 0.12 μg/L Bromomethane 74-83-9 34413 TAL-FL GCM25 0.73–0.91 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.2 ʺ Caprolactam 105-60-2 64173 TAL-FL GM025 1.9–5.7 μg/L Carbazole 86-74-8 77571 TAL-FL GM025 0.56–1.7 μg/L Carbon disulfide 75-15-0 77041 TAL-FL GCM25 0.5 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.04–0.08 ʺ Chlorobenzene 108-90-7 34301 TAL-FL GCM25 0.5 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.016–0.026 ʺ Chloroethane 75-00-3 34311 TAL-FL GCM25 0.63 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.06 ʺ Chloromethane 74-87-3 34418 TAL-FL GCM25 0.53 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.14 ʺ

Chrysene 218-01-9 34320 TAL-FL GM025 0.27–0.83 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.33 ʺ

cis-1,2-dichloroethene 156-59-2 77093 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.022 ʺ

cis-1,3-dichloropropene 10061-01-5 34704 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.1 ʺ

Cyclohexane 110-82-7 81570 TAL-FL GCM25 0.5 μg/L

Dibenzo[a,h]anthracene 53-70-3 34556 TAL-FL GM025 0.26–0.8 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.42 ʺ
Appendix Table 1-1 

5

Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued[Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above]

Analyte CASRN Pcode Laboratory Method Reporting level1 Units

Dibenzofuran 132-64-9 81302 TAL-FL GM025 0.93–2.9 μg/L

Dibromochloromethane 124-48-1 32105 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.12 ʺ

Dibromomethane 74-95-3 30217 USGS NWQL GCM66 0.05 μg/L

Dichlorodifluoromethane 75-71-8 34668 TAL-FL GCM25 0.79 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.1 ʺ

Dichloromethane 75-09-2 34423 TAL-FL GCM25 0.81–1.0 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.038–0.04 ʺ

Diesel range organics na 04585 TAL-FL GCI01 40.0–50 μg/L

Diesel range organics (C10-C36) na 63746 TAL-CO GCI01 0.052–0.068 mg/LDiethyl ether 60-29-7 81576 USGS NWQL GCM66 0.08–0.1 μg/L

Diethyl phthalate 84-66-2 34336 TAL-FL GM025 0.24–0.74 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.61 ʺ

Diisopropyl ether 108-20-3 81577 USGS NWQL GCM66 0.06 μg/L

Dimethyl phthalate 131-11-3 34341 TAL-FL GM025 0.93–2.9 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.36 ʺ

Di-n-butyl phthalate 84-74-2 39110 TAL-FL GM025 0.29–0.89 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 2.0 ʺ

Di-n-octyl phthalate 117-84-0 34596 TAL-FL GM025 0.17–0.51 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.6 ʺ

Dissolved organic carbon na 00681 USGS OCRL COMB4 0.7 mg/LEthyl methacrylate 97-63-2 73570 USGS NWQL GCM66 0.14–0.2 μg/L

Ethyl methyl ketone 78-93-3 81595 TAL-FL GCM25 2.4 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 1.6 ʺ

Ethylbenzene 100-41-4 34371 TAL-CO GCM25 0.1 μg/L

 ʺ ʺ ʺ TAL-FL GCM25 0.5 ʺ ʺ ʺ ʺ USGS NWQL GCM66 0.036 ʺ

Fluoranthene 206-44-0 34376 TAL-FL GM025 0.13–0.4 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ

Fluorene 86-73-7 34381 TAL-FL GM025 0.14–0.43 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.33 ʺ

Gasoline range organics na 49892 TAL-CO GCI02 4.0 μg/L

Gasoline range organics (C6–C10) na 67990 TAL-FL GC155 18.0–50 μg/L

Hexachlorobenzene 118-74-1 39700 TAL-FL GM025 0.16–0.49 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.3 ʺ

Hexachlorobutadiene 87-68-3 39702 USGS NWQL GCM57 0.24 μg/L

 ʺ ʺ ʺ ʺ GCM66 0.06–0.08 ʺ
6 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued [Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above] Analyte CASRN Pcode Laboratory Method Reporting level1 Units Hexachlorocyclopentadiene 77-47-4 34386 TAL-FL GM025 2.1–6.6 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.5 ʺ Hexachloroethane 67-72-1 34396 TAL-FL GM025 1.1–3.4 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.24 ʺ ʺ ʺ ʺ ʺ GCM66 0.14–0.22 ʺ Indeno[1,2,3-cd]pyrene 193-39-5 34403 TAL-FL GM025 0.22–0.69 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.38 ʺ Iodomethane 74-88-4 77424 USGS NWQL GCM66 0.26 μg/L Isobutyl methyl ketone 108-10-1 78133 TAL-FL GCM25 1.8 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.32 ʺ Isophorone 78-59-1 34408 TAL-FL GM025 0.54–1.7 μg/L ʺ ʺ ʺ USGS NWQL GCM57 0.26 ʺ Isopropylbenzene 98-82-8 77223 TAL-FL GCM94 0.53 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.042 ʺ

m- plus 

p-Cresol 65794-96-9 65195 TAL-FL GM025 1.7–5.1 μg/L

m- plus 

p-Xylene 179601-23-1 85795 USGS NWQL GCM66 0.08 μg/L

Methyl acetate 79-20-9 77032 TAL-FL GCM25 2.1 μg/L

Methyl acrylate 96-33-3 49991 USGS NWQL GCM66 0.56–0.8 μg/L

Methyl acrylonitrile 126-98-7 81593 USGS NWQL GCM66 0.26 μg/L

Methyl methacrylate 80-62-6 81597 USGS NWQL GCM66 0.22 μg/L

Methyl tert-butyl ether 1634-04-4 78032 TAL-FL GCM25 0.74 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.1 ʺ

Methyl tert-pentyl ether 994-05-8 50005 USGS NWQL GCM66 0.06 μg/L

Methylcyclohexane 108-87-2 77100 TAL-FL GCM25 0.5 μg/L

Naphthalene 91-20-3 34696 TAL-FL GM025 0.14–1.0 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.22 ʺ ʺ ʺ ʺ ʺ GCM66 0.18 ʺ

n-Butyl methyl ketone 591-78-6 77103 TAL-FL GCM25 3.1 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.4–0.46

n-Butylbenzene 104-51-8 77342 USGS NWQL GCM66 0.08 μg/L

Nitrobenzene 98-95-3 34447 TAL-FL GM025 0.75–2.3 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.26 ʺ

N-Nitrosodimethylamine 62-75-9 34438 USGS NWQL GCM57 0.24 μg/L

N-Nitrosodi-n-propylamine 621-64-7 34428 TAL-FL GM025 1.9–5.7 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.4 ʺ

N-Nitrosodiphenylamine 86-30-6 34433 TAL-FL GM025 0.2–0.63 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.28 ʺ
Appendix Table 1-1 

7

Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued[Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above]

Analyte CASRN Pcode Laboratory Method Reporting level1 Units

n-Propylbenzene 103-65-1 77224 USGS NWQL GCM66 0.036 μg/L

o-Cresol 95-48-7 77152 TAL-FL GM025 1.9–5.7 μg/L

Oil and grease na 00552 TAL-FL GRV30 0.00018–2.1 mg/LOil range organics (C28–C35) na 68082 TAL-FL GC158 40.0–50 μg/L

Organics (C8–C36) na 68081 TAL-FL GC158 40.0–50 μg/L

o-Xylene 95-47-6 77135 USGS NWQL GCM66 0.032 μg/L

Pentachlorophenol 87-86-5 39032 TAL-FL GM025 2.7–8.3 μg/L

 ʺ ʺ ʺ USGS NWQL GCM56 0.6 ʺ

Phenanthrene 85-01-8 34461 TAL-FL GM025 0.15–0.46 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.32 ʺ

Phenol 108-95-2 34694 TAL-FL GM025 1.3–4.0 μg/L

 ʺ ʺ ʺ USGS NWQL GCM56 0.28 ʺ

Pyrene 129-00-0 34469 TAL-FL GM025 0.16–0.49 μg/L

 ʺ ʺ ʺ USGS NWQL GCM57 0.35 ʺ

sec-Butylbenzene 135-98-8 77350 USGS NWQL GCM66 0.034 μg/L

Styrene 100-42-5 77128 TAL-FL GCM25 1.0 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.03–0.042 ʺ

tert-Butyl ethyl ether 637-92-3 50004 USGS NWQL GCM66 0.032 μg/L

tert-Butylbenzene 98-06-6 77353 USGS NWQL GCM66 0.06 μg/L

Tetrachloroethene 127-18-4 34475 TAL-FL GCM25 0.5–0.58 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.026 ʺ

Tetrachloromethane 56-23-5 32102 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.052–0.06 ʺ

Tetrahydrofuran 109-99-9 81607 USGS NWQL GCM66 1.4 μg/L

Toluene 108-88-3 34010 TAL-CO GCM25 0.17 μg/L

 ʺ ʺ ʺ TAL-FL GCM25 0.7 ʺ ʺ ʺ ʺ USGS NWQL GCM66 0.018 ʺ

trans-1,2-dichloroethene 156-60-5 34546 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.018 ʺ

trans-1,3-dichloropropene 10061-02-6 34699 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.14 ʺ

trans-1,4-Dichloro-2-butene 110-57-6 73547 USGS NWQL GCM66 0.36 μg/L

Tribromomethane 75-25-2 32104 TAL-FL GCM25 0.58 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.1 ʺ

Trichloroethene 79-01-6 39180 TAL-FL GCM25 0.5 μg/L

 ʺ ʺ ʺ USGS NWQL GCM66 0.022 ʺ
8 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill Appendix Table 1-1. Methods, reporting levels, and laboratories used for chemical analysis for the Deepwater Horizon oil spill, Gulf of Mexico, 2010: organic contaminants in water.—Continued [Method codes are from the National Water Information System (NWIS) database, and are defined in Table 1-6. Abbreviations: CASRN, Chemical Abstracts Services Registry Number; na, not applicable; NWQL, National Water Quality Laboratory, Denver, Colorado; OCRL, Organic Carbon Research Laboratory, Boulder, Colorado; pcode, parameter code from the U.S. Geological Survey NWIS database; TAL-CO, TestAmerica Laboratory, Denver, Colorado; TAL-FL, TestAmerica Laboratory, Pensacola, Florida; USGS, U.S. Geological Survey; μg/L, microgram per liter; mg/L, milligram per liter; ʺ, cell is identical to the cell immediately above] Analyte CASRN Pcode Laboratory Method Reporting level1 Units Trichlorofluoromethane 75-69-4 34488 TAL-FL GCM25 0.5–0.52 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.06–0.08 ʺ Trichloromethane 67-66-3 32106 TAL-FL GCM25 0.5–0.6 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.03 ʺ Vinyl chloride 75-01-4 39175 TAL-FL GCM25 0.5 μg/L ʺ ʺ ʺ USGS NWQL GCM66 0.06 ʺ Xylene (all isomers) 1330-20-7 81551 TAL-CO GCM25 0.19 μg/L ʺ ʺ ʺ TAL-FL GCM25 1.6 ʺ

1Range in reporting levels for that analyte, analyzed by that method and laboratory. Reporting level is defined as the concentration, set by a laboratory, and used for reporting analytical results that are 

determined to be less than the detection level.