The Director of an approved State may allow discounting of closure cost estimates in Sec. 258.71(a), post-closure cost estimates in Sec. 258.72(a), and/or corrective action costs in Sec. 258.73(a) up to the rate of return for essentially risk free investments, net of inflation, under the following conditions:
(a) The State Director determines that cost estimates are complete and accurate and the owner or operator has submitted a statement from a Registered Professional Engineer so stating;
(b) The State finds the facility in compliance with applicable and appropriate permit conditions;
(c) The State Director determines that the closure date is certain and the owner or operator certifies that there are no foreseeable factors that will change the estimate of site life; and
(d) Discounted cost estimates must be adjusted annually to reflect inflation and years of remaining life. [61 FR 60339, Nov. 27, 1996]
Sec. Appendix I to Part 258--Constituents for Detection Monitoring ------------------------------------------------------------------------
Common name \1\ CAS RN \2\------------------------------------------------------------------------Inorganic Constituents:
(1) Antimony.......................... (Total)
(2) Arsenic........................... (Total)
(3) Barium............................ (Total)
(4) Beryllium......................... (Total)
(5) Cadmium........................... (Total)
(6) Chromium.......................... (Total)
(7) Cobalt............................ (Total)
(8) Copper............................ (Total)
(9) Lead.............................. (Total)
(10) Nickel........................... (Total)
(11) Selenium......................... (Total)
(12) Silver........................... (Total)
(13) Thallium......................... (Total)
(14) Vanadium......................... (Total)
(15) Zinc............................. (Total)Organic Constituents:
(16) Acetone.......................... 67-64-1
(17) Acrylonitrile.................... 107-13-1
(18) Benzene.......................... 71-43-2
(19) Bromochloromethane............... 74-97-5
(20) Bromodichloromethane............. 75-27-4
(21) Bromoform; Tribromomethane....... 75-25-2
(22) Carbon disulfide................. 75-15-0
(23) Carbon tetrachloride............. 56-23-5
(24) Chlorobenzene.................... 108-90-7
(25) Chloroethane; Ethyl chloride..... 75-00-3
(26) Chloroform; Trichloromethane..... 67-66-3
(27) Dibromochloromethane; 124-48-1
Chlorodibromomethane.
(28) 1,2-Dibromo-3-chloropropane; DBCP 96-12-8
(29) 1,2-Dibromoethane; Ethylene 106-93-4
dibromide; EDB.
(30) o-Dichlorobenzene; 1,2- 95-50-1
Dichlorobenzene.
(31) p-Dichlorobenzene; 1,4- 106-46-7
Dichlorobenzene.
(32) trans-1, 4-Dichloro-2-butene..... 110-57-6
(33) 1,1-Dichlorethane; Ethylidene 75-34-3
chloride.
(34) 1,2-Dichlorethane; Ethylene 107-06-2
dichloride.
(35) 1,1-Dichloroethylene; 1,1- 75-35-4
Dichloroethene; Vinylidene chloride.
(36) cis-1,2-Dichloroethylene; cis-1,2- 156-59-2
Dichloroethene.
(37) trans-1, 2-Dichloroethylene; 156-60-5
trans-1,2-Dichloroethene.
(38) 1,2-Dichloropropane; Propylene 78-87-5
dichloride.
(39) cis-1,3-Dichloropropene.......... 10061-01-5
(40) trans-1,3-Dichloropropene........ 10061-02-6
(41) Ethylbenzene..................... 100-41-4
(42) 2-Hexanone; Methyl butyl ketone.. 591-78-6
(43) Methyl bromide; Bromomethane..... 74-83-9
(44) Methyl chloride; Chloromethane... 74-87-3
(45) Methylene bromide; Dibromomethane 74-95-3
(46) Methylene chloride; 75-09-2
Dichloromethane.
(47) Methyl ethyl ketone; MEK; 2- 78-93-3
Butanone.
(48) Methyl iodide; Idomethane........ 74-88-4
(49) 4-Methyl-2-pentanone; Methyl 108-10-1
isobutyl ketone.
(50) Styrene.......................... 100-42-5
(51) 1,1,1,2-Tetrachloroethane........ 630-20-6
(52) 1,1,2,2-Tetrachloroethane........ 79-34-5
(53) Tetrachloroethylene; 127-18-4
Tetrachloroethene; Perchloroethylene.
(54) Toluene.......................... 108-88-3
(55) 1,1,1-Trichloroethane; 71-55-6
Methylchloroform.
(56) 1,1,2-Trichloroethane............ 79-00-5
(57) Trichloroethylene; 79-01-6
Trichloroethene.
(58) Trichlorofluoromethane; CFC-11... 75-69-4
(59) 1,2,3-Trichloropropane........... 96-18-4
(60) Vinyl acetate.................... 108-05-4
(61) Vinyl chloride................... 75-01-4
(62) Xylenes.......................... 1330-20-7------------------------------------------------------------------------\1\ Common names are those widely used in government regulations,
scientific publications, and commerce; synonyms exist for many
chemicals.\2\ Chemical Abstract Service registry number. Where ``Total'' is
entered, all species in the ground water that contain this element are
included. [70 FR 34555, June 14, 2005; 70 FR 44150, Aug. 1, 2005]
Sec. Appendix II to Part 258--List of Hazardous Inorganic and Organic
Constituents ------------------------------------------------------------------------
Chemical abstracts
Common name \1\ CAS RN \2\ service index name \3\------------------------------------------------------------------------Acenaphthene.................... 83-32-9...... Acenaphthylene, 1,2-
dihydro-Acenaphthylene.................. 208-96-8..... AcenaphthyleneAcetone......................... 67-64-1...... 2-PropanoneAcetonitrile; Methyl cyanide.... 75-05-8...... AcetonitrileAcetophenone.................... 98-86-2...... Ethanone, 1-phenyl-2-Acetylaminofluorene; 2-AAF.... 53-96-3...... Acetamide, N-9H-fluoren-
2-yl-Acrolein........................ 107-02-8..... 2-PropenalAcrylonitrile................... 107-13-1..... 2-PropenenitrileAldrin.......................... 309-00-2..... 1,4:5,8-
Dimethanonaphthalene,
1,2,3,4,10,10-
hexachloro-
1,4,4a,5,8,8a-
hexahydro-
(1,4,4a,5,8,8a)-Allyl chloride.................. 107-05-1..... 1-Propene, 3-chloro-4-Aminobiphenyl................. 92-67-1...... [1,1'-Biphenyl]-4-amineAnthracene...................... 120-12-7..... AnthraceneAntimony........................ (Total)...... AntimonyArsenic......................... (Total)...... ArsenicBarium.......................... (Total)...... BariumBenzene......................... 71-43-2...... BenzeneBenzo[a]anthracene; 56-55-3...... Benz[a]anthracene
Benzanthracene.Benzo[b]fluoranthene............ 205-99-2..... Benz[e]acephenanthrylen
eBenzo[k]fluoranthene............ 207-08-9..... Benzo[k]fluorantheneBenzo[ghi]perylene.............. 191-24-2..... Benzo[ghi]peryleneBenzo[a]pyrene.................. 50-32-8...... Benzo[a]pyreneBenzyl alcohol.................. 100-51-6..... BenzenemethanolBeryllium....................... (Total)...... Berylliumalpha-BHC....................... 319-84-6..... Cyclohexane,
1,2,3,4,5,6-hexachloro-
,(1[alpha],2[alpha],3[
beta],4[alpha],5[beta]
,6[beta])-beta-BHC........................ 319-85-7..... Cyclohexane,
1,2,3,4,5,6-hexachloro-
,(1[alpha],2[beta],3[a
lpha],4[beta],5[alpha]
,6[beta])-delta-BHC....................... 319-86-8..... Cyclohexane,
1,2,3,4,5,6-hexachloro-
,(1[alpha],2[alpha],3[
alpha],4[beta],5[alpha
],6[beta])-gamma-BHC; Lindane.............. 58-89-9...... Cyclohexane,
1,2,3,4,5,6-
hexachloro-
,(1[alpha],2[alpha],
3[beta],
4[alpha],5[alpha],6[be
ta])-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-
Dichloroethyl ether. chloro-Bis(2-chloro-1-methylethyl) 108-60-1..... Propane, 2,2'-oxybis[1-
ether; 2,2'-Dichlorodiisopropyl chloro-
ether; DCIP, See footnote 4.Bis(2-ethylhexyl) phthalate..... 117-81-7..... 1,2-Benzenedicarboxylic
acid, bis(2-
ethylhexyl)esterBromochloromethane; 74-97-5...... Methane, bromochloro-
Chlorobromethane.Bromodichloromethane; 75-27-4...... Methane, bromodichloro-
Dibromochloromethane.Bromoform; Tribromomethane...... 75-25-2...... Methane, tribromo-4-Bromophenyl phenyl ether...... 101-55-3..... Benzene, 1-bromo-4-
phenoxy-Butyl benzyl phthalate; Benzyl 85-68-7...... 1,2-Benzenedicarboxylic
butyl phthalate. acid, butyl
phenylmethyl esterCadmium......................... (Total)...... CadmiumCarbon disulfide................ 75-15-0...... Carbon disulfideCarbon tetrachloride............ 56-23-5...... Methane, tetrachloro-Chlordane....................... See footnote 4,7-Methano-1H-indene,
5. 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-
-(4-chlorophenyl)-
-hydroxy-, ethyl ester.p-Chloro-m-cresol; 4-Chloro-3- 59-50-7...... Phenol, 4-chloro-3-
methylphenol. methyl-Chloroethane; Ethyl chloride.... 75-00-3...... Ethane, chloro-Chloroform; Trichloromethane.... 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)...... ChromiumChrysene........................ 218-01-9..... ChryseneCobalt.......................... (Total)...... CobaltCopper.......................... (Total)...... Copperm-Cresol; 3-Methylphenol........ 108-39-4..... Phenol, 3-methyl-o-Cresol; 2-Methylphenol........ 95-48-7...... Phenol, 2-methyl-p-Cresol; 4-Methylphenol........ 106-44-5..... Phenol, 4-methyl-Cyanide......................... 57-12-5...... Cyanide2,4-D; 2,4-Dichlorophenoxyacetic 94-75-7...... Acetic acid, (2,4-
acid. 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]anthraceneDibenzofuran.................... 132-64-9..... DibenzofuranDibromochloromethane; 124-48-1..... Methane, dibromochloro-
Chlorodibromomethane.1,2-Dibromo-3-chloropropane; 96-12-8...... Propane, 1,2-dibromo-3-
DBCP. chloro-1,2-Dibromoethane; Ethylene 106-93-4..... Ethane, 1,2-dibromo-
dibromide; EDB.Di-n-butyl phthalate............ 84-74-2...... 1,2-Benzenedicarboxylic
acid, dibutyl estero-Dichlorobenzene; 1,2- 95-50-1...... Benzene, 1,2-dichloro-
Dichlorobenzene.m-Dichlorobenzene; 1,3- 541-73-1..... Benzene, 1,3-dichloro-
Dichlorobenzene.p-Dichlorobenzene; 1,4- 106-46-7..... Benzene, 1,4-dichloro-
Dichlorobenzene.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; CFC 12. 75-71-8...... Methane,
dichlorodifluoro-1,1-Dichloroethane; Ethyldidene 75-34-3...... Ethane, 1,1-dichloro-
chloride.1,2-Dichloroethane; Ethylene 107-06-2..... Ethane, 1,2-dichloro-
dichloride.1,1-Dichloroethylene; 1,1- 75-35-4...... Ethene, 1,1-dichloro-
Dichloroethene;Vinylidene chloride cis-1,2- 156-59-2..... Ethene, 1,2-dichloro-
Dichloroethylene; cis-1,2- (Z)-
Dichloroethene.trans-1,2-Dichloroethylene; 156-60-5..... Ethene, 1,2-dichloro-,
trans-1,2-Dichloroethene. (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-1,3-Dichloropropane; 142-28-9..... Propane, 1,3-dichloro-
Trimethylene dichloride.2,2-Dichloropropane; 594-20-7..... Propane, 2,2-dichloro-
Isopropylidene chloride.1,1-Dichloropropene............. 563-58-6..... 1-Propene, 1,1-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-,
(1a[alpha],2[beta],2a[
alpha],3[beta],6[beta]
,6a[alpha],7[beta],7a[
alpha])-Diethyl phthalate............... 84-66-2...... 1,2-Benzenedicarboxylic
acid, diethyl esterO,O-Diethyl O-2-pyrazinyl 297-97-2..... Phosphorothioic acid,
phosphorothioate; Thionazin. O,O-diethyl O-
pyrazinyl ester.Dimethoate...................... 60-51-5...... Phosphorodithioic acid,
O,O-dimethyl S-[2-
(methylamino)-2-
oxoethyl] esterp-(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- 122-09-8..... Benzeneethanamine,
Dimethylphenethylamine. [alpha],[alpha]-
dimethyl-2,4-Dimethylphenol; m-Xylenol... 105-67-9..... Phenol, 2,4-dimethyl-Dimethyl phthalate.............. 131-11-3..... 1,2-Benzenedicarboxylic
acid, dimethyl esterm-Dinitrobenzene................ 99-65-0...... Benzene, 1,3-dinitro-4,6-Dinitro-o-cresol; 4,6- 534-52-1..... Phenol, 2-methyl-4,6-
Dinitro-2-methylphenol. 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- 88-85-7...... Phenol, 2-(1-
dinitrophenol. methylpropyl)-4,6-
dinitro-Di-n-octyl phthalate............ 117-84-0..... 1,2-Benzenedicarboxylic
acid, dioctyl esterDiphenylamine................... 122-39-4..... Benzenamine, N-phenyl-Disulfoton...................... 298-04-4..... Phosphorodithioic acid,
O,O-diethyl S-[2-
(ethylthio)ethyl]
esterEndosulfan I.................... 959-98-8..... 6,9-Methano-2,4,3-
benzodiox-athiepin,
6,7,8,9,10,10-
hexachloro-
1,5,5a,6,9,9a-
hexahydro-, 3-oxide,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,
(3[alpha],5a[alpha],6[
beta],9[beta],
9a[alpha])-
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-
dioxideEndrin.......................... 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-,
(1a[alpha],
2[beta],2a[beta],
3[alpha],6[alpha],6a[b
eta],7[beta],7a[alpha]
)-Endrin aldehyde................. 7421-93-4.... 1,2,4-Methenocyclo-
penta[cd]pentalene-5-
carboxaldehyde,2,2a,3,
3,4,7-
hexachlorodecahydro-
(1[alpha],2[beta],2a[b
eta],4[beta],4a[beta],
5[beta],6a[beta],6b[be
ta],7R*)-Ethylbenzene.................... 100-41-4..... Benzene, ethyl-Ethyl methacrylate.............. 97-63-2...... 2-Propenoic acid, 2-
methyl-, ethyl esterEthyl methanesulfonate.......... 62-50-0...... Methanesulfonic acid,
ethyl esterFamphur......................... 52-85-7...... Phosphorothioic acid, O-
[4-
[(dimethylamino)sulfon
yl]phenyl]-O,O-
dimethyl esterFluoranthene.................... 206-44-0..... FluorantheneFluorene........................ 86-73-7...... 9H-FluoreneHeptachlor...................... 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-
,(1a[alpha],1b[beta],2
[alpha],5[alpha],5a[be
ta],6[beta],6a[alpha])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-Hexachloropropene............... 1888-71-7.... 1-Propene, 1,1,2,3,3,3-
hexachloro-2-Hexanone; Methyl butyl ketone. 591-78-6..... 2-HexanoneIndeno(1,2,3-cd)pyrene.......... 193-39-5..... Indeno[1,2,3-cd]pyreneIsobutyl 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-(1[alpha],
4[alpha],
4a[beta],5[beta],8[bet
a],8a[beta])-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)...... LeadMercury......................... (Total)...... MercuryMethacrylonitrile............... 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,trichloroethyli
dene)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-Methyl ethyl ketone; MEK; 2- 78-93-3...... 2-Butanone
Butanone.Methyl iodide; Iodomethane...... 74-88-4...... Methane, iodo-Methyl methacrylate............. 80-62-6...... 2-Propenoic acid, 2-
methyl-, methyl esterMethyl methanesulfonate......... 66-27-3...... Methanesulfonic acid,
methyl ester2-Methylnaphthalene............. 91-57-6...... Naphthalene, 2-methyl-Methyl parathion; Parathion 298-00-0..... Phosphorothioic acid,
methyl. O,O-dimethyl4-Methyl-2-pentanone; Methyl 108-10-1..... 2-Pentanone, 4-methyl-
isobutyl ketone.Methylene bromide; 74-95-3...... Methane, dibromo-
Dibromomethane.Methylene chloride; 75-09-2...... Methane, dichloro-
Dichloromethane.Naphthalene..................... 91-20-3...... Naphthalene1,4-Naphthoquinone.............. 130-15-4..... 1,4-Naphthalenedione1-Naphthylamine................. 134-32-7..... 1-Naphthalenamine2-Naphthylamine................. 91-59-8...... 2-NaphthalenamineNickel.......................... (Total)...... Nickelo-Nitroaniline; 2-Nitroaniline.. 88-74-4...... Benzenamine, 2-nitro-m-Nitroaniline; 3-Nitroaniline.. 99-09-2...... Benzenamine, 3-nitro-p-Nitroaniline; 4-Nitroaniline.. 100-01-6..... Benzenamine, 4-nitro-Nitrobenzene.................... 98-95-3...... Benzene, nitro-o-Nitrophenol; 2-Nitrophenol.... 88-75-5...... Phenol, 2-nitro-p-Nitrophenol; 4-Nitrophenol.... 100-02-7..... Phenol, 4-nitro-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; N- 621-64-7..... 1-Propanamine, N-
Nitroso-N-dipropylamine; Di-n- nitroso-N-propyl-
propylnitrosamine.N-Nitrosomethylethalamine....... 10595-95-6... Ethanamine, N-methyl-N-
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) esterPentachlorobenzene.............. 608-93-5..... Benzene, 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...... PhenanthrenePhenol.......................... 108-95-2..... Phenolp-Phenylenediamine.............. 106-50-3..... 1,4-BenzenediaminePhorate......................... 298-02-2..... Phosphorodithioic acid,
O,O-diethyl S-
[(ethylthio)methyl]
esterPolychlorinated biphenyls; PCBs. See footnote 1,1'-Biphenyl, chloro
6. derivativesPronamide....................... 23950-58-5... Benzamide, 3,5-dichloro-
N-(1,1-dimethyl-2-
propynyl)-Propionitrile; Ethyl cyanide.... 107-12-0..... PropanenitrilePyrene.......................... 129-00-0..... PyreneSafrole......................... 94-59-7...... 1,3-Benzodioxole, 5-(2-
propenyl)-Selenium........................ (Total)...... SeleniumSilver.......................... (Total)...... SilverSilvex; 2,4,5-TP................ 93-72-1...... Propanoic acid, 2-
(2,4,5-
trichlorophenoxy)-Styrene......................... 100-42-5..... Benzene, ethenyl-Sulfide......................... 18496-25-8... Sulfide2,4,5-T; 2,4,5- 93-76-5...... Acetic acid, (2,4,5-
Trichlorophenoxyacetic acid. trichlorophenoxy)-2,3,7,8-TCDD; 2,3,7,8- 1746-01-6.... Dibenzo[b,e][1,4]dioxin
Tetrachlorodibenzo- p-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; 127-18-4..... Ethene, tetrachloro-
Tetrachloroethene;
Perchloroethylene.2,3,4,6-Tetrachlorophenol....... 58-90-2...... Phenol, 2,3,4,6-
tetrachloro-Thallium........................ (Total)...... ThalliumTin............................. (Total)...... TinToluene......................... 108-88-3..... Benzene, methyl-o-Toluidine..................... 95-53-4...... Benzenamine, 2-methyl-Toxaphene....................... See footnote Toxaphene
7.1,2,4-Trichlorobenzene.......... 120-82-1..... Benzene, 1,2,4-
trichloro-1,1,1-Trichloroethane; 71-55-6...... Ethane, 1,1,1-trichloro-
Methylchloroform.1,1,2-Trichloroethane........... 79-00-5...... Ethane, 1,1,2-trichloro-
Trichloroethylene; 79-01-6...... Ethene, trichloro-
Trichloroethene.Trichlorofluoromethane; CFC-11.. 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 estersym-Trinitrobenzene............. 99-35-4...... Benzene, 1,3,5-trinitro-
Vanadium........................ (Total)...... VanadiumVinyl acetate................... 108-05-4..... Acetic acid, ethenyl
esterVinyl chloride; Chloroethene.... 75-01-4...... Ethene, chloro-Xylene (total).................. See footnote Benzene, dimethyl-
8.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\ This substance is often called bis(2-chloroisopropyl) ether, the
name Chemical Abstracts Service applies to its noncommercial isomer,
propane, 2,2[sec]-oxybis[2-chloro-(CAS RN 39638-32-9).\5\ Chlordane: This entry includes alpha-chlordane (CAS RN 5103-71-9),
beta-chlordane (CAS RN 5103-74-2), gamma-chlordane (CAS RN 5566-34-7),
and constituents of chlordane (CAS RN 57-74-9 and CAS RN 12789-03-6).\6\ 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).\7\ Toxaphene: This entry includes congener chemicals contained in
technical toxaphene (CAS RN 8001-35-2), i.e., chlorinated camphene.\8\ Xylene (total): This entry includes o-xylene (CAS RN 96-47-6), m-
xylene (CAS RN 108-38-3), p-xylene (CAS RN 106-42-3), and unspecified
xylenes (dimethylbenzenes) (CAS RN 1330-20-7). [70 FR 34556, June 14, 2005; 70 FR 44150, Aug. 1, 2005]