40 CFR Appendix IX to Part 264 - Appendix IX to Part 264—Ground-Water Monitoring List

Appendix IX to Part 264—Ground-Water Monitoring List

Ground-Water Monitoring List

Common name 1 CAS RN 2 Chemical abstracts service index name 3
Acenaphthene 83–32–9 Acenaphthylene, 1,2-dihydro-
Acenaphthylene 208–96–8 Acenaphthylene
Acetone 67–64–1 2-Propanone
Acetophenone 98–86–2 Ethanone, 1-phenyl-
Acetonitrile; Methyl cyanide 75–05–8 Acetonitrile
2-Acetylaminofluorene; 2-AAF 53–96–3 Acetamide, N–9H-fluoren-2-yl-
Acrolein 107–02–8 2-Propenal
Acrylonitrile 107–13–1 2-Propenenitrile
Aldrin 309–00–2 1,4:5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-hexahydro-(1α,4α,4aβ,5α,8α,8aβ)-
Allyl chloride 107–05–1 1-Propene, 3-chloro-
4-Aminobiphenyl 92–67–1 [1,1′-Biphenyl]-4-amine
Aniline 62–53–3 Benzenamine
Anthracene 120–12–7 Anthracene
Antimony (Total) Antimony
Aramite 140–57–8 Sulfurous acid, 2-chloroethyl 2-[4-(1,1-dimethylethyl) phenoxy]-1-methylethyl ester
Arsenic (Total) Arsenic
Barium (Total) Barium
Benzene 71–43–2 Benzene
Benzo[a]anthracene; Benzanthracene 56–55–3 Benz[a]anthracene
Benzo[b]fluoranthene 205–99–2 Benz[e]acephenanthrylene
Benzo[k]fluoranthene 207–08–9 Benzo[k]fluoranthene
Benzo[ghi]perylene 191–24–2 Benzo[ghi]perylene
Benzo[a]pyrene 50–32–8 Benzo[a]pyrene
Benzyl alcohol 100–51–6 Benzenemethanol
Beryllium (Total) Beryllium
alpha-BHC 319–84–6 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2α,3β,4β,5β,6β)-
beta-BHC 319–85–7 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2β,3α,4β,5α,6β)-
delta-BHC 319–86–8 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2α,3α,4β,5α,6β)-
gamma-BHC; Lindane 58–89–9 Cyclohexane, 1,2,3,4,5,6-hexachloro-,(1α,2α,3β,4α,5α,6β)-
Bis(2-chloroethoxy)methane 111–91–1 Ethane, 1,1′-[methylenebis(oxy)]bis [2-chloro-
Bis(2-chloroethyl)ether 111–44–4 Ethane, 1,1′-oxybis[2-chloro-
Bis(2-chloro-1-methylethyl) ether; 2,2′-Dichlorodiisopropyl ether 108–60–1 Propane, 2,2′-oxybis[1-chloro-
Bis(2-ethylhexyl) phthalate 117–81–7 1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl)ester
Bromodichloromethane 75–27–4 Methane, bromodichloro-
Bromoform; Tribromomethane 75–25–2 Methane, tribromo-
4-Bromophenyl phenyl ether 101–55–3 Benzene, 1-bromo-4-phenoxy-
Butyl benzyl phthalate; Benzyl butyl phthalate 85–68–7 1,2-Benzenedicarboxylic acid, butyl phenylmethyl ester
Cadmium (Total) Cadmium
Carbon disulfide 75–15–0 Carbon disulfide
Carbon tetrachloride 56–23–5 Methane, tetrachloro-
Chlordane 57–74–9 4,7-Methano-1H-indene, 1,2,4,5,6,7,8,8-octachloro-2,3,3a,4,7,7a -hexahydro-
p-Chloroaniline 106–47–8 Benzenamine, 4-chloro-
Chlorobenzene 108–90–7 Benzene, chloro-
Chlorobenzilate 510–15–6 Benzeneacetic acid, 4-chloro-α-(4-chlorophenyl)-α-hydroxy-, ethyl ester
p-Chloro-m-cresol 59–50–7 Phenol, 4-chloro-3-methyl-
Chloroethane; Ethyl chloride 75–00–3 Ethane, chloro-
Chloroform 67–66–3 Methane, trichloro-
2-Chloronaphthalene 91–58–7 Naphthalene, 2-chloro-
2-Chlorophenol 95–57–8 Phenol, 2-chloro-
4-Chlorophenyl phenyl ether 7005–72–3 Benzene, 1-chloro-4-phenoxy-
Chloroprene 126–99–8 1,3-Butadiene,2-chloro-
Chromium (Total) Chromium
Chrysene 218–01–9 Chrysene
Cobalt (Total) Cobalt
Copper (Total) Copper
m-Cresol 108–39–4 Phenol, 3-methyl-
o-Cresol 95–48–7 Phenol, 2-methyl-
p-Cresol 106–44–5 Phenol, 4-methyl-
Cyanide 57–12–5 Cyanide
2,4-D; 2,4-Dichlorophenoxyacetic acid 94–75–7 Acetic acid, (2,4-dichlorophenoxy)-
4,4′-DDD 72–54–8 Benzene 1,1′-(2,2-dichloroethylidene) bis[4-chloro-
4,4′-DDE 72–55–9 Benzene, 1,1′-(dichloroethenylidene) bis[4-chloro-
4,4′-DDT 50–29–3 Benzene, 1,1′-(2,2,2-trichloroethylidene) bis[4-chloro-
Diallate 2303–16–4 Carbamothioic acid, bis(1-methylethyl)- , S- (2,3-dichloro-2-propenyl) ester
Dibenz[a,h]anthracene 53–70–3 Dibenz[a,h]anthracene
Dibenzofuran 132–64–9 Dibenzofuran
Dibromochloromethane; Chlorodibromomethane 124–48–1 Methane, dibromochloro-
1,2-Dibromo-3-chloropropane; DBCP 96–12–8 Propane, 1,2-dibromo-3-chloro-
1,2-Dibromoethane; Ethylene dibromide 106–93–4 Ethane, 1,2-dibromo-
Di-n-butyl phthalate 84–74–2 1,2-Benzenedicarboxylic acid, dibutyl ester
o-Dichlorobenzene 95–50–1 Benzene, 1,2-dichloro-
m-Dichlorobenzene 541–73–1 Benzene, 1,3-dichloro-
p-Dichlorobenzene 106–46–7 Benzene, 1,4-dichloro-
3,3′-Dichlorobenzidine 91–94–1 [1,1′-Biphenyl]-4,4′-diamine, 3,3′-dichloro-
trans-1,4-Dichloro-2-butene 110–57–6 2-Butene, 1,4-dichloro-, (E)-
Dichlorodifluoromethane 75–71–8 Methane, dichlorodifluoro-
1,1-Dichloroethane 75–34–3 Ethane, 1,1-dichloro-
1,2-Dichloroethane; Ethylene dichloride 107–06–2 Ethane, 1,2-dichloro-
1,1-Dichloroethylene; Vinylidene chloride 75–35–4 Ethene, 1,1-dichloro-
trans-1,2-Dichloroethylene 156–60–5 Ethene, 1,2-dichloro-, (E)-
2,4-Dichlorophenol 120–83–2 Phenol, 2,4-dichloro-
2,6-Dichlorophenol 87–65–0 Phenol, 2,6-dichloro-
1,2-Dichloropropane 78–87–5 Propane, 1,2-dichloro-
cis-1,3-Dichloropropene 10061–01–5 1-Propene, 1,3-dichloro-, (Z)-
trans-1,3-Dichloropropene 10061–02–6 1-Propene, 1,3-dichloro-, (E)-
Dieldrin 60–57–1 2,7:3,6-Dimethanonaphth [2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aα,2β,2aα,3β,6β;,6aα,7β,7aα)-
Diethyl phthalate 84–66–2 1,2-Benzenedicarboxylic acid, diethyl ester
O,O-Diethyl O-2-pyrazinyl phosphorothioate; Thionazin 297–97–2 Phosphorothioic acid, O,O-diethyl O-pyrazinyl ester
Dimethoate 60–51–5 Phosphorodithioic acid, O,O-dimethyl S-[2-(methylamino)-2-oxoethyl] ester
p-(Dimethylamino)azobenzene 60–11–7 Benzenamine, N,N-dimethyl-4-(phenylazo)-
7,12-Dimethylbenz[a]anthracene 57–97–6 Benz[a]anthracene, 7,12-dimethyl-
3,3′-Dimethylbenzidine 119–93–7 [1,1′-Biphenyl]-4,4′-diamine, 3,3′-dimethyl-
alpha, alpha-Dimethylphenethylamine 122–09–8 Benzeneethanamine, α,α-dimethyl-
2,4-Dimethylphenol 105–67–9 Phenol, 2,4-dimethyl-
Dimethyl phthalate 131–11–3 1,2-Benzenedicarboxylic acid, dimethyl ester
m-Dinitrobenzene 99–65–0 Benzene, 1,3-dinitro-
4,6-Dinitro-o-cresol 534–52–1 Phenol, 2-methyl-4,6-dinitro-
2,4-Dinitrophenol 51–28–5 Phenol, 2,4-dinitro-
2,4-Dinitrotoluene 121–14–2 Benzene, 1-methyl-2,4-dinitro-
2,6-Dinitrotoluene 606–20–2 Benzene, 2-methyl-1,3-dinitro-
Dinoseb; DNBP; 2-sec-Butyl-4,6-dinitrophenol 88–85–7 Phenol, 2-(1-methylpropyl)-4,6-dinitro-
Di-n-octyl phthalate 117–84–0 1,2-Benzenedicarboxylic acid, dioctyl ester
1,4-Dioxane 123–91–1 1,4-Dioxane
Diphenylamine 122–39–4 Benzenamine, N-phenyl-
Disulfoton 298–04–4 Phosphorodithioic acid, O,O-diethyl S-[2-(ethylthio)ethyl]ester
Endosulfan I 959–98–8 6,9-Methano-2,4,3- benzodioxathiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide,(3α,5aβ,6α,9α,9aβ)-
Endosulfan II 33213–65–9 6,9-Methano-2,4,3- benzodioxathiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide, (3α,5aα,6β,9β,9aα)-
Endosulfan sulfate 1031–07–8 6,9-Methano-2,4,3- benzodioxathiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3,3-dioxide
Endrin 72–20–8 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-,1a,2,2a,3,6,6a,7,7a-octahydro-, (1aα,2β,2aβ,3α,6α,6aβ,7β, 7aα)-
Endrin aldehyde 7421–93–4 1,2,4- Methenocyclopenta[cd] pentalene-5-carboxaldehyde, 2,2a,3,3,4,7-hexachlorodecahydro-,(1α,2β,2aβ,4β,4aβ,5β,6aβ,6bβ,7R*)-
Ethylbenzene 100–41–4 Benzene, ethyl-
Ethyl methacrylate 97–63–2 2-Propenoic acid, 2-methyl-, ethyl ester
Ethyl methanesulfonate 62–50–0 Methanesulfonic acid, ethyl ester
Famphur 52–85–7 Phosphorothioic acid, O-[4-[(dimethylamino)sulfonyl]phenyl]-O,O-dimethyl ester
Fluoranthene 206–44–0 Fluoranthene
Fluorene 86–73–7 9H-Fluorene
Heptachlor 76–44–8 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-
Heptachlor epoxide 1024–57–3 2,5-Methano-2H-indeno[1,2-b] oxirene, 2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a,-hexahydro-, (1aα,1bβ,2α,5α,5aβ,6β,6aα)
Hexachlorobenzene 118–74–1 Benzene, hexachloro-
Hexachlorobutadiene 87–68–3 1,3-Butadiene, 1,1,2,3,4,4-hexachloro-
Hexachlorocyclopentadiene 77–47–4 1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-
Hexachloroethane 67–72–1 Ethane, hexachloro-
Hexachlorophene 70–30–4 Phenol, 2,2′-methylenebis[3,4,6-trichloro-
Hexachloropropene 1888–71–7 1-Propene, 1,1,2,3,3,3-hexachloro-
2-Hexanone 591–78–6 2-Hexanone
Indeno(1,2,3-cd)pyrene 193–39–5 Indeno[1,2,3-cd]pyrene
Isobutyl alcohol 78–83–1 1-Propanol, 2-methyl-
Isodrin 465–73–6 1,4,5,8-Dimethanonaphthalene,1,2,3,4,1 0,10-hexachloro-1,4,4a,5,8,8a hexahydro-(1α, 4α, 4aβ, 5β, 8β, 8aβ)-
Isophorone 78–59–1 2-Cyclohexen-1-one, 3,5,5-trimethyl-
Isosafrole 120–58–1 1,3-Benzodioxole, 5-(1-propenyl)-
Kepone 143–50–0 1,3,4-Metheno-2H-cyclobuta-[cd]pentalen-2-one, 1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-
Lead (Total) Lead
Mercury (Total) Mercury
Methacrylonitrile 126–98–7 2-Propenenitrile, 2-methyl-
Methapyrilene 91–80–5 1,2,Ethanediamine,N,N-dimethyl-N′-2-pyridinyl-N′-(2-thienylmethyl)-
Methoxychlor 72–43–5 Benzene, 1,1′-(2,2,2,trichloroethylidene)bis [4-methoxy-
Methyl bromide; Bromomethane 74–83–9 Methane, bromo-
Methyl chloride; Chloromethane 74–87–3 Methane, chloro-
3-Methylcholanthrene 56–49–5 Benz[j]aceanthrylene, 1,2-dihydro-3-methyl-
Methylene bromide; Dibromomethane 74–95–3 Methane, dibromo-
Methylene chloride; Dichloromethane 75–09–2 Methane, dichloro-
Methyl ethyl ketone; MEK; 78–93–3 2-Butanone
Methyl iodide; Iodomethane 74–88–4 Methane, iodo-
Methyl methacrylate 80–62–6 2-Propenoic acid, 2-methyl-, methyl ester
Methyl methanesulfonate 66–27–3 Methanesulfonic acid, methyl ester
2-Methylnaphthalene 91–57–6 Naphthalene, 2-methyl-
Methyl parathion; Parathion methyl 298–00–0 Phosphorothioic acid, O,O-dimethyl O-(4-nitrophenyl) ester
4-Methyl-2-pentanone; Methyl isobutyl ketone 108–10–1 2-Pentanone, 4-methyl-
Naphthalene 91–20–3 Naphthalene
1,4-Naphthoquinone 130–15–4 1,4-Naphthalenedione
1-Naphthylamine 134–32–7 1-Naphthalenamine
2-Naphthylamine 91–59–8 2-Naphthalenamine
Nickel (Total) Nickel
o-Nitroaniline 88–74–4 Benzenamine, 2-nitro-
m-Nitroaniline 99–09–2 Benzenamine, 3-nitro-
p-Nitroaniline 100–01–6 Benzenamine, 4-nitro-
Nitrobenzene 98–95–3 Benzene, nitro-
o-Nitrophenol 88–75–5 Phenol, 2-nitro-
p-Nitrophenol 100–02–7 Phenol, 4-nitro-
4-Nitroquinoline 1-oxide 56–57–5 Quinoline, 4-nitro, 1-oxide
N-Nitrosodi-n-butylamine 924–16–3 1-Butanamine, N-butyl-N-nitroso-
N-Nitrosodiethylamine 55–18–5 Ethanamine, N-ethyl-N-nitroso-
N-Nitrosodimethylamine 62–75–9 Methanamine, N-methyl-N-nitroso-
N-Nitrosodiphenylamine 86–30–6 Benzenamine, N-nitroso-N-phenyl-
N-Nitrosodipropylamine;Di-n-propylnitrosamine 621–64–7 1-Propanamine, N-nitroso-N-propyl-
N-Nitrosomethylethalamine 10595–95–6 Ethanamine, N-methyl-N-nitroso-
N-Nitrosomorpholine 59–89–2 Morpholine, 4-nitroso-
N-Nitrosopiperidine 100–75–4 Piperidine, 1-nitroso-
N-Nitrosopyrrolidine 930–55–2 Pyrrolidine, 1-nitroso-
5-Nitro-o-toluidine 99–55–8 Benzenamine, 2-methyl-5-nitro-
Parathion 56–38–2 Phosphorothioic acid, O,O-diethyl-O-(4-nitrophenyl) ester
Polychlorinated biphenyls; PCBs See footnote 4 1,1′-Biphenyl, chloro derivatives
Polychlorinated dibenzo-p-dioxins; PCDDs See footnote 5 Dibenzo[b,e][1,4]dioxin, chloro derivatives
Polychlorinated dibenzofurans; PCDFs See footnote 6 Dibenzofuran, chloro derivatives
Pentachlorobenzene 608–93–5 Benzene, pentachloro-
Pentachloroethane 76–01–7 Ethane, pentachloro-
Pentachloronitrobenzene 82–68–8 Benzene, pentachloronitro-
Pentachlorophenol 87–86–5 Phenol, pentachloro-
Phenacetin 62–44–2 Acetamide, N-(4-ethoxyphenyl)
Phenanthrene 85–01–8 Phenanthrene
Phenol 108–95–2 Phenol
p-Phenylenediamine 106–50–3 1,4-Benzenediamine
Phorate 298–02–2 Phosphorodithioic acid, O,O-diethyl S- [(ethylthio)methyl] ester
2-Picoline 109–06–8 Pyridine, 2-methyl-
Pronamide 23950–58–5 Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)-
Propionitrile; Ethyl cyanide 107–12–0 Propanenitrile
Pyrene 129–00–0 Pyrene
Pyridine 110–86–1 Pyridine
Safrole 94–59–7 1,3-Benzodioxole, 5-(2-propenyl)-
Selenium (Total) Selenium
Silver (Total) Silver
Silvex; 2,4,5-TP 93–72–1 Propanoic acid, 2-(2,4,5- trichlorophenoxy)-
Styrene 100–42–5 Benzene, ethenyl-
Sulfide 18496–25–8 Sulfide
2,4,5-T; 2,4,5-Trichlorophenoxyacetic acid 93–76–5 Acetic acid, (2,4,5-trichlorophenoxy)-
2,3,7,8-TCDD; 2,3,7,8-Tetrachlorodibenzo-p-dioxin 1746–01–6 Dibenzo[b,e][1,4]dioxin, 2,3,7,8-tetrachloro-
1,2,4,5-Tetrachlorobenzene 95–94–3 Benzene, 1,2,4,5-tetrachloro-
1,1,1,2-Tetrachloroethane 630–20–6 Ethane, 1,1,1,2-tetrachloro-
1,1,2,2-Tetrachloroethane 79–34–5 Ethane, 1,1,2,2-tetrachloro-
Tetrachloroethylene; Perchloroethylene; Tetrachloroethene 127–18–4 Ethene, tetrachloro-
2,3,4,6-Tetrachlorophenol 58–90–2 Phenol, 2,3,4,6-tetrachloro-
Tetraethyl dithiopyrophosphate; Sulfotepp 3689–24–5 Thiodiphosphoric acid ([(HO)2 P(S)]2 O), tetraethyl ester
Thallium (Total) Thallium
Tin (Total) Tin
Toluene 108–88–3 Benzene, methyl-
o-Toluidine 95–53–4 Benzenamine, 2-methyl-
Toxaphene 8001–35–2 Toxaphene
1,2,4-Trichlorobenzene 120–82–1 Benzene, 1,2,4-trichloro-
1,1,1-Trichloroethane; Methylchloroform 71–55–6 Ethane, 1,1,1-trichloro-
1,1,2-Trichloroethane 79–00–5 Ethane, 1,1,2-trichloro-
Trichloroethylene; Trichloroethene 79–01–6 Ethene, trichloro-
Trichlorofluoromethane 75–69–4 Methane, trichlorofluoro-
2,4,5-Trichlorophenol 95–95–4 Phenol, 2,4,5-trichloro-
2,4,6-Trichlorophenol 88–06–2 Phenol, 2,4,6-trichloro-
1,2,3-Trichloropropane 96–18–4 Propane, 1,2,3-trichloro-
O,O,O-Triethyl phosphorothioate 126–68–1 Phosphorothioic acid, O,O,O-triethyl ester
sym-Trinitrobenzene 99–35–4 Benzene, 1,3,5-trinitro-
Vanadium (Total) Vanadium
Vinyl acetate 108–05–4 Acetic acid, ethenyl ester
Vinyl chloride 75–01–4 Ethene, chloro-
Xylene (total) 1330–20–7 Benzene, dimethyl-
Zinc (Total) Zinc

1 Common names are those widely used in government regulations, scientific publications, and commerce; synonyms exist for many chemicals.

2 Chemical Abstracts Service registry number. Where “Total” is entered, all species in the ground water that contain this element are included.

3 CAS index names are those used in the 9th Cumulative Index.

4 Polychlorinated biphenyls (CAS RN 1336–36–3); this category contains congener chemicals, including constituents of Aroclor-1016 (CAS RN 12674–11–2), Aroclor-1221 (CAS RN 11104–28–2), Aroclor-1232 (CAS RN 11141–16–5), Aroclor-1242 (CAS RN 53469–21–9), Aroclor-1248 (CAS RN 12672–29–6), Aroclor-1254 (CAS RN 11097–69–1), and Aroclor-1260 (CAS RN 11096–82–5).

5 This category contains congener chemicals, including tetrachlorodibenzo-p-dioxins (see also 2,3,7,8-TCDD), pentachlorodibenzo-p-dioxins, and hexachlorodibenzo-p-dioxins.

6 This category contains congener chemicals, including tetrachlorodibenzofurans, pentachlorodibenzofurans, and hexachlorodibenzofurans.

[70 FR 34582, June 14, 2005, as amended at 70 FR 44151, Aug. 1, 2005]