Mont. Admin. r. 17.50.1307 - ASSESSMENT MONITORING PROGRAM
(1) An owner
or operator of a Class II or Class IV landfill unit shall conduct assessment
monitoring at that unit as required in ARM
17.50.1306 and this rule.
(2) Within 90 days after being required by ARM
17.50.1306 to establish an assessment
monitoring program, and annually thereafter, the owner or operator shall sample and
analyze the ground water for all constituents identified in Appendix II to 40 CFR
Part 258 (July 1, 2008), set forth below. A minimum of one sample from each
downgradient well must be collected and analyzed during each sampling event. For any
constituent detected in the downgradient wells as a result of monitoring of all
constituents in Appendix II to 40 CFR Part 258 (July 1, 2008), a minimum of four
independent samples from each background and downgradient well must be collected and
analyzed to establish background for the constituent. The owner or operator shall
conduct assessment monitoring for constituents in Appendix II to 40 CFR Part 258
(July 1, 2008) for any subset of wells specified by the department. The department
may exempt an owner or operator of a Class II or Class IV landfill unit from
monitoring a constituent in Appendix II to 40 CFR Part 258 (July 1, 2008) if the
owner or operator makes a written demonstration, approved by the department, that
the exempted constituent is not reasonably expected to be in, or derived from, the
waste contained in the unit.
(3) The
department may specify, and an owner or operator shall comply with, an appropriate
alternate frequency for repeated sampling and analysis of the constituents in
Appendix II to 40 CFR Part 258 (July 1, 2008) required by (2), during the active
life and closure and post-closure care periods of the unit, considering the
following factors:
(a) lithology of the aquifer
and unsaturated zone;
(b) hydraulic
conductivity of the aquifer and unsaturated zone;
(c) ground water flow rates;
(d) minimum distance between upgradient edge of
the Class II or Class IV landfill unit and downgradient monitoring well screen
(minimum distance of travel);
(e)
resource value of the aquifer; and
(f)
nature (fate and transport) of any constituents detected by monitoring required by
this rule.
(4) After obtaining
the results from the initial or subsequent sampling events required in (2), the
owner or operator shall:
(a) within 14 days, place
a notice in the operating record identifying the constituents in Appendix II to 40
CFR Part 258 (July 1, 2008) that have been detected and notify the department that
this notice has been placed in the operating record;
(b) within 90 days, and on at least a semiannual
basis thereafter, resample all wells described in ARM
17.50.1304(1), conduct
analyses for all constituents in Appendix I to 40 CFR Part 258 (July 1, 2008) or in
the alternative list of parameters established in accordance with ARM
17.50.1306(3), and for
those constituents in Appendix II to 40 CFR Part 258 (July 1, 2008) that are
detected by monitoring required by (2), and record their concentrations in the
facility operating record. At least one sample from each background and downgradient
well must be collected and analyzed during these sampling events. If specified by
the department, the owner or operator shall conduct sampling and analyses under this
subsection at an alternative frequency during the active life and closure and the
post-closure care periods of the unit. The alternative frequency may be no less
frequent than annual during the active life of the unit, including closure. The
alternative frequency must be based on consideration of the factors specified in
(3);
(c) establish the background
concentration for each constituent or parameter detected pursuant to (2) or (4)(b);
and
(d) establish the ground water
protection standard for each constituent or parameter detected pursuant to (2) or
(4)(b). The ground water protection standard must be established in accordance with
(8).
(5) If the owner or
operator determines that concentrations of all constituents in Appendix II to 40 CFR
Part 258 (July 1, 2008) are at or below background values, using the statistical
procedures described in ARM
17.50.1305(8), for two
consecutive sampling events, the owner or operator shall submit this determination
to the department for approval and may, if approved, return to detection
monitoring.
(6) If the owner or operator
determines, using the statistical procedures in ARM
17.50.1305(8), that
the concentration of a constituent in Appendix II to 40 CFR part 258 (July 1, 2008)
is above background, but that all concentrations are below the ground water
protection standard established under (8), the owner or operator shall submit this
determination to the department for approval and shall continue assessment
monitoring in accordance with this rule, unless notified otherwise by the
department.
(7) If the owner, operator,
or department determines, using the same statistical procedures as required in ARM
17.50.1305(8), that,
in any sampling event required in this rule, there has been a statistically
significant increase above the ground water protection standard established under
(8) in the concentration of a constituent in Appendix II to 40 CFR part 258 (July 1,
2008), the owner or operator shall, within 14 days, place a notice in the operating
record identifying each constituent in Appendix II to 40 CFR part 258 (July 1, 2008)
that has exceeded the ground water protection standard and notify the department and
all appropriate local government officials that the notice has been placed in the
operating record. The owner or operator shall either:
(a) comply with (7)(a)(i) through (iv), as
follows:
(i) characterize the nature and extent of
the release by installing additional monitoring wells as necessary;
(ii) install at least one additional monitoring
well at the facility boundary in the direction of contaminant migration and sample
this well in accordance with (4)(b);
(iii) notify all persons who own the land or
reside on the land that directly overlies any part of the plume of contamination, if
contaminants have migrated off-site if indicated by sampling of wells in accordance
with (7)(a); and
(iv) initiate an
assessment of corrective measures as required by ARM
17.50.1308, within 90 days;
or
(b) demonstrate that a
source other than a Class II or Class IV landfill unit caused the contamination, or
that the statistically significant increase resulted from error in sampling,
analysis, statistical evaluation, or from natural variation in ground water quality.
A report documenting this demonstration must be certified by a qualified ground
water scientist and submitted to the department for approval and placed in the
operating record. If the demonstration is approved, the owner or operator shall
continue monitoring in accordance with the assessment monitoring program required by
this rule, and may return to detection monitoring if the concentrations of all of
the constituents in Appendix II to 40 CFR Part 258 (July 1, 2008) are at or below
background levels as specified in (5). Until the department approves a
demonstration, the owner or operator shall comply with (7), including initiating an
assessment of corrective measures.
(8) The owner or operator shall establish a ground
water protection standard for each constituent in Appendix II to 40 CFR Part 258
(July 1, 2008) and parameter in the alternative list in ARM
17.50.1306(3) detected
in the ground water. The ground water protection standard must be:
(a) for a constituent for which a maximum
contaminant level (MCL) has been promulgated under Montana ground water quality
standards, the MCL for that constituent;
(b) for a constituent for which an MCL has not
been promulgated, the background concentration for the constituent established from
wells in accordance with ARM
17.50.1304(1)(a);
(c) for a constituent for which the background
level is higher than the MCL identified under (8)(a) or health based levels
identified under (9)(a), the background concentration; or
(d) for a constituent or parameter in the
alternative list in ARM
17.50.1306(3) for
which a ground water quality standard has been established pursuant to (9), that
ground water quality standard.
(9) If the department believes a standard is
needed for a constituent or parameter in the alternative list in ARM
17.50.1306(3) for
which an MCL or ground water quality standard has not been established by Montana
law or rule, the department shall propose the adoption of a ground water quality
standard for that constituent or parameter. The ground water quality standard
proposed must be health-based and set at an appropriate level that satisfies the
following criteria:
(a) the level is derived in a
manner consistent with EPA guidelines for assessing the health risks of
environmental pollutants (51 FR 33992, 34006, 34014, 34028, Sept. 24,
1986);
(b) the level is based on
scientifically valid studies conducted in accordance with the Toxic Substances
Control Act Good Laboratory Practice Standards ( 40 CFR Part 792) or equivalent
requirements;
(c) for carcinogens, the
level represents a concentration associated with an excess lifetime cancer risk
level, due to continuous lifetime exposure, within the
1×10-4 to 1×10-6
range; and
(d) for systemic toxicants,
the level represents a concentration to which the human population, including
sensitive subgroups, could be exposed to on a daily basis that is likely to be
without appreciable risk of deleterious effects during a lifetime. For purposes of
this subchapter, systemic toxicants include toxic chemicals that cause effects other
than cancer or mutation.
(10)
In proposing a ground water quality standard under (9), the department shall
consider the following:
(a) multiple contaminants
in the ground water;
(b) exposure
threats to sensitive environmental receptors; and
(c) other site-specific exposure or potential
exposure to ground water.
Appendix II to 40 CFR Part 258 (July 1, 2008)
List of Hazardous Inorganic and Organic Constituents
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| Acenaphthene | 83-32-9 | Acenaphthylene, 1,2-dihydro- |
| Acenaphthylene | 208-96-8 | Acenaphthylene |
| Acetone | 67-64-1 | 2-Propanone |
| Acetonitrile; Methyl cyanide | 75-05-8 | Acetonitrile |
| Acetophenone | 98-86-2 | Ethanone, 1-phenyl- |
| 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 |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| Aldrin | 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-amine |
| Anthracene | 120-12-7 | Anthracene |
| Antimony | Antimony | |
| Arsenic | Arsenic | |
| Barium | 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 | Beryllium | |
| alpha-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[ALPHA],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[BETA])- |
| Bis(2-chloroethoxy)methane | 111-91-1 | Ethane, 1,1'-[methylenebis (oxy)]bis [2-chloro- |
| Bis(2-chloroethyl)ether; Dichloroethyl ether | 111-44-4 | Ethane, 1,1'-oxybis[2-chloro- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| Bis(2-chloro-1-methylethyl) ether; 2,2'-Dichlorodiisopropyl ether; DCIP, See footnote 4 | 108-60-1 | Propane, 2,2'-oxybis[1-chloro- |
| Bis(2-ethylhexyl) phthalate | 117-81-7 | 1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl)ester |
| Bromochloromethane; Chlorobromethane | 74-97-5 | Methane, bromochloro- |
| Bromodichloromethane; Dibromochloromethane | 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 | Cadmium | |
| Carbon disulfide | 75-15-0 | Carbon disulfide |
| Carbon tetrachloride | 56-23-5 | Methane, tetrachloro- |
| Chlordane | See footnote 5 | 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--(4-chlorophenyl)--hydroxy-, ethyl ester. |
| p-Chloro-m-cresol; 4-Chloro-3-methylphenol | 59-50-7 | Phenol, 4-chloro-3-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 | Chromium |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| Chrysene | 218-01-9 | Chrysene |
| Cobalt | Cobalt | |
| Copper | Copper | |
| m-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 | 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; EDB | 106-93-4 | Ethane, 1,2-dibromo- |
| Di-n-butyl phthalate | 84-74-2 | 1,2-Benzenedicarboxylic acid, dibutyl ester |
| o-Dichlorobenzene; 1,2-Dichlorobenzene | 95-50-1 | Benzene, 1,2-dichloro- |
| m-Dichlorobenzene; 1,3-Dichlorobenzene | 541-73-1 | Benzene, 1,3-dichloro- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| p-Dichlorobenzene; 1,4-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; CFC 12 | 75-71-8 | Methane, dichlorodifluoro- |
| 1,1-Dichloroethane; Ethyldidene chloride | 75-34-3 | Ethane, 1,1-dichloro- |
| 1,2-Dichloroethane; Ethylene dichloride | 107-06-2 | Ethane, 1,2-dichloro- |
| 1,1-Dichloroethylene; 1,1-Dichloroethene; | 75-35-4 | Ethene, 1,1-dichloro- |
| Vinylidene chloride cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene | 156-59-2 | Ethene, 1,2-dichloro-(Z)- |
| trans-1,2-Dichloroethylene; trans-1,2-Dichloroethene | 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- |
| 1,3-Dichloropropane; Trimethylene dichloride | 142-28-9 | Propane, 1,3-dichloro- |
| 2,2-Dichloropropane; Isopropylidene chloride | 594-20-7 | Propane, 2,2-dichloro- |
| 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])- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| 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, [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 ester |
| m-Dinitrobenzene | 99-65-0 | Benzene, 1,3-dinitro- |
| 4,6-Dinitro-o-cresol; 4,6-Dinitro-2-methylphenol | 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 |
| 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-benzodiox-athiepin, 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide, |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| 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-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-, (1a[ALPHA], 2[BETA],2a[BETA], 3[ALPHA],6[ALPHA],6a[BETA],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[BETA],4[BETA],4a[BETA],5[BETA],6a[BETA],6b[BETA],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-,(1a[ALPHA],1b[BETA],2[ALPHA],5[ALPHA],5a[BETA],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- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| Hexachloropropene | 1888-71-7 | 1-Propene, 1,1,2,3,3,3-hexachloro- |
| 2-Hexanone; Methyl butyl ketone | 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-(1[ALPHA], 4[ALPHA], 4a[BETA],5[BETA],8[BETA],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 | Lead | |
| Mercury | 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- |
| Methyl ethyl ketone; MEK; 2-Butanone | 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 |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| 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 |
| 4-Methyl-2-pentanone; Methyl isobutyl ketone | 108-10-1 | 2-Pentanone, 4-methyl- |
| Methylene bromide; Dibromomethane | 74-95-3 | Methane, dibromo- |
| Methylene chloride; Dichloromethane | 75-09-2 | Methane, dichloro- |
| 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 | Nickel | |
| o-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-Nitroso-N-dipropylamine; Di-n-propylnitrosamine | 621-64-7 | 1-Propanamine, N-nitroso-N-propyl- |
| 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- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| 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 |
| Pentachlorobenzene | 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 | 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 |
| Polychlorinated biphenyls; PCBs | See footnote 6 | 1,1'-Biphenyl, chloro derivatives |
| 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 |
| Safrole | 94-59-7 | 1,3-Benzodioxole, 5-(2- propenyl)- |
| Selenium | Selenium | |
| Silver | 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- |
| Common name1 | CAS RN2 | Chemical abstracts service index name3 |
| 1,1,2,2-Tetrachloroethane | 79-34-5 | Ethane, 1,1,2,2-tetrachloro- |
| Tetrachloroethylene; Tetrachloroethene; Perchloroethylene | 127-18-4 | Ethene, tetrachloro- |
| 2,3,4,6-Tetrachlorophenol | 58-90-2 | Phenol, 2,3,4,6-tetrachloro- |
| Thallium | Thallium | |
| Tin | Tin | |
| Toluene | 108-88-3 | Benzene, methyl- |
| o-Toluidine | 95-53-4 | Benzenamine, 2-methyl- |
| Toxaphene | See footnote 7 | 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; 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 ester |
| sym-Trinitrobenzene | 99-35-4 | Benzene, 1,3,5-trinitro- |
| Vanadium | Vanadium | |
| Vinyl acetate | 108-05-4 | Acetic acid, ethenyl ester |
| Vinyl chloride; Chloroethene | 75-01-4 | Ethene, chloro- |
| Xylene (total) | See footnote 8 | Benzene, dimethyl- |
| Zinc | Zinc |
1Common names are those widely used in government regulations, scientific publications, and commerce; synonyms exist for many chemicals.
2Chemical Abstracts Service registry number.
3CAS index names are those used in the 9th Cumulative Index.
4This substance is often called bis(2-chloroisopropyl) ether, the name Chemical Abstracts Service applies to its noncommercial isomer, propane, 2,2"-oxybis[2-chloro-(CAS RN 39638-32-9).
5Chlordane: 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).
6Polychlorinated 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).
7Toxaphene: This entry includes congener chemicals contained in technical toxaphene (CAS RN 8001-35-2), i.e., chlorinated camphene.
8Xylene (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).
Notes
AUTH: 75-10-204, MCA; IMP: 75-10-204, 75-10-207, MCA
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