[Code of Federal Regulations]
[Title 40, Volume 24]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR264.1202]
[Page 449-460]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 264_STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT,
STORAGE, AND DISPOSAL FACILITIES--Table of Contents
Subpart EE_Hazardous Waste Munitions and Explosives Storage
Sec. 264.1202 Closure and post-closure care.
(a) At closure of a magazine or unit which stored hazardous waste
under this subpart, the owner or operator must remove or decontaminate
all waste residues, contaminated containment system components,
contaminated subsoils, and structures and equipment contaminated with
waste, and manage them as hazardous waste unless Sec. 261.3(d) of this
chapter applies. The closure plan, closure activities, cost estimates
for closure, and financial responsibility for magazines or units must
meet all of the requirements specified in subparts G and H of this part,
except that the owner or operator may defer closure of the unit as long
as it remains in service as a munitions or explosives magazine or
storage unit.
(b) If, after removing or decontaminating all residues and making
all reasonable efforts to effect removal or decontamination of
contaminated components, subsoils, structures, and equipment as required
in paragraph (a) of this section, the owner or operator finds that not
all contaminated subsoils can be practicably removed or decontaminated,
he or she must close the facility and perform post-closure care in
accordance with the closure and post-closure requirements that apply to
landfills (Sec. 264.310).
Appendix I to Part 264--Recordkeeping Instructions
The recordkeeping provisions of Sec. 264.73 specify that an owner
or operator must keep a written operating record at his facility. This
appendix provides additional instructions for keeping portions of the
operating record. See Sec. 264.73(b) for additional recordkeeping
requirements.
The following information must be recorded, as it becomes available,
and maintained in the operating record until closure of the facility in
the following manner:
Records of each hazardous waste received, treated, stored, or
disposed of at the facility which include the following:
(1) A description by its common name and the EPA Hazardous Waste
Number(s) from part 261 of this chapter which apply to the waste. The
waste description also must include the waste's physical form, i.e.,
liquid, sludge, solid, or contained gas. If the waste is not listed in
part 261, subpart D, of this chapter, the description also must include
the process that produced it (for example, solid filter cake from
production of ----, EPA Hazardous Waste Number W051).
Each hazardous waste listed in part 261, subpart D, of this chapter,
and each hazardous waste characteristic defined in part 261, subpart C,
of this chapter, has a four-digit EPA Hazardous Waste Number assigned to
it. This number must be used for recordkeeping and reporting purposes.
Where a hazardous waste contains more than one listed hazardous waste,
or where more than one hazardous waste characteristic applies to the
[[Page 450]]
waste, the waste description must include all applicable EPA Hazardous
Waste Numbers.
(2) The estimated or manifest-reported weight, or volume and
density, where applicable, in one of the units of measure specified in
Table 1;
Table 1
------------------------------------------------------------------------
Unit of measure Code \1\
------------------------------------------------------------------------
Gallons.................................... G
Gallons per Hour........................... E
Gallons per Day............................ U
Liters..................................... L
Liters per Hour............................ H
Liters per Day............................. V
Short Tons per Hour........................ D
Metric Tons per Hour....................... W
Short Tons per Day......................... N
Metric Tons per Day........................ S
Pounds per Hour............................ J
Kilograms per Hour......................... R
Cubic Yards................................ Y
Cubic Meters............................... C
Acres...................................... B
Acre-feet.................................. A
Hectares................................... Q
Hectare-meter.............................. F
Btu's per Hour............................. I
------------------------------------------------------------------------
\1\ Single digit symbols are used here for data processing purposes.
(3) The method(s) (by handling code(s) as specified in Table 2) and
date(s) of treatment, storage, or disposal.
Table 2_Handling Codes for Treatment, Storage and Disposal Methods
Enter the handling code(s) listed below that most closely represents
the technique(s) used at the facility to treat, store or dispose of each
quantity of hazardous waste received.
1. Storage
S01 Container (barrel, drum, etc.)
S02 Tank
S03 Waste Pile
S04 Surface Impoundment
S05 Drip Pad
S06 Containment Building (Storage)
S99 Other Storage (specify)
2. Treatment
(a) Thermal Treatment--
T06 Liquid injection incinerator
T07 Rotary kiln incinerator
T08 Fluidized bed incinerator
T09 Multiple hearth incinerator
T10 Infrared furnace incinerator
T11 Molten salt destructor
T12 Pyrolysis
T13 Wet air oxidation
T14 Calcination
T15 Microwave discharge
T18 Other (specify)
(b) Chemical Treatment--
T19 Absorption mound
T20 Absorption field
T21 Chemical fixation
T22 Chemical oxidation
T23 Chemical precipitation
T24 Chemical reduction
T25 Chlorination
T26 Chlorinolysis
T27 Cyanide destruction
T28 Degradation
T29 Detoxification
T30 Ion exchange
T31 Neutralization
T32 Ozonation
T33 Photolysis
T34 Other (specify)
(c) Physical Treatment--
(1) Separation of components:
T35 Centrifugation
T36 Clarification
T37 Coagulation
T38 Decanting
T39 Encapsulation
T40 Filtration
T41 Flocculation
T42 Flotation
T43 Foaming
T44 Sedimentation
T45 Thickening
T46 Ultrafiltration
T47 Other (specify)
(2) Removal of Specific Components:
T48 Absorption-molecular sieve
T49 Activated carbon
T50 Blending
T51 Catalysis
T52 Crystallization
T53 Dialysis
T54 Distillation
T55 Electrodialysis
T56 Electrolysis
T57 Evaporation
T58 High gradient magnetic separation
T59 Leaching
T60 Liquid ion exchange
T61 Liquid-liquid extraction
T62 Reverse osmosis
T63 Solvent recovery
T64 Stripping
T65 Sand filter
T66 Other (specify)
(d) Biological Treatment
T67 Activated sludge
T68 Aerobic lagoon
T69 Aerobic tank
T70 Anaerobic tank
T71 Composting
T72 Septic tank
T73 Spray irrigation
T74 Thickening filter
T75 Tricking filter
T76 Waste stabilization pond
T77 Other (specify)
T78-T79 [Reserved]
[[Page 451]]
(e) Boilers and Industrial Furnaces
T80 Boiler
T81 Cement Kiln
T82 Lime Kiln
T83 Aggregate Kiln
T84 Phosphate Kiln
T85 Coke Oven
T86 Blast Furnace
T87 Smelting, Melting, or Refining Furnace
T88 Titanium Dioxide Chloride Process Oxidation Reactor
T89 Methane Reforming Furnace
T90 Pulping Liquor Recovery Furnace
T91 Combustion Device Used in the Recovery of Sulfur Values from Spent
Sulfuric Acid
T92 Halogen Acid Furnaces
T93 Other Industrial Furnaces Listed in 40 CFR 260.10 (specify)
(f) Other Treatment
T94 Containment Building (Treatment)
3. Disposal
D79 Underground Injection
D80 Landfill
D81 Land Treatment
D82 Ocean Disposal
D83 Surface Impoundment (to be closed as a landfill)
D99 Other Disposal (specify)
4. Miscellaneous (Subpart X)
X01 Open Burning/Open Detonation
X02 Mechanical Processing
X03 Thermal Unit
X04 Geologic Repository
X99 Other Subpart X (specify)
[45 FR 33221, May 19, 1980, as amended at 59 FR 13891, Mar. 24, 1994]
Appendixes II-III to Part 264 [Reserved]
Appendix IV to Part 264--Cochran's Approximation to the Behrens-Fisher
Students' t-test
Using all the available background data (nb readings),
calculate the background mean (Xb) and background variance
(sb2). For the single monitoring well under investigation
(nm reading), calculate the monitoring mean (Xm)
and monitoring variance (sm2).
For any set of data (X1, X2, . . .,
Xn) the mean is calculated by:
[GRAPHIC] [TIFF OMITTED] TC15NO91.174
and the variance is calculated by:
[GRAPHIC] [TIFF OMITTED] TC15NO91.175
where ``n'' denotes the number of
observations in the set of data.
The t-test uses these data summary measures to calculate a t-
statistic (t*) and a comparison t-statistic (tc). The t*
value is compared to the tc value and a conclusion reached as
to whether there has been a statistically significant change in any
indicator parameter.
The t-statistic for all parameters except pH and similar monitoring
parameters is:
[GRAPHIC] [TIFF OMITTED] TR26OC93.011
If the value of this t-statistic is negative then there is no
significant difference between the monitoring data and background data.
It should be noted that significantly small negative values may be
indicative of a failure of the assumption made for test validity or
errors have been made in collecting the background data.
The t-statistic (tc), against which t* will be compared,
necessitates finding tb and tm from standard (one-
tailed) tables where,
tb=t-tables with (nb-1) degrees of freedom, at the
0.05 level of significance.
tm=t-tables with (nm-1) degrees of freedom, at the
0.05 level of significance.
Finally, the special weightings Wb and Wm are
defined as:
[GRAPHIC] [TIFF OMITTED] TC15NO91.176
and so the comparison t-statistic is:
[GRAPHIC] [TIFF OMITTED] TC15NO91.177
The t-statistic (t*) is now compared with the comparison t-statistic
(tc) using the following decision-rule:
If t* is equal to or larger than tc, then conclude that
there most likely has been a significant increase in this specific
parameter.
If t* is less than tc, then conclude that most likely there
has not been a change in this specific parameter.
The t-statistic for testing pH and similar monitoring parameters is
constructed in the same manner as previously described except the
negative sign (if any) is discarded and the caveat concerning the
negative value is ignored. The standard (two-tailed) tables are used in
the construction tc for pH and similar monitoring parameters.
If t* is equal to or larger than tc, then conclude that
there most likely has been a significant increase (if the initial t* had
been
[[Page 452]]
negative, this would imply a significant decrease). If t* is less than
tc, then conclude that there most likely has been no change.
A further discussion of the test may be found in Statistical Methods
(6th Edition, Section 4.14) by G. W. Snedecor and W. G. Cochran, or
Principles and Procedures of Statistics (1st Edition, Section 5.8) by R.
G. D. Steel and J. H. Torrie.
Standard T--Tables 0.05 Level of Significance
------------------------------------------------------------------------
t-values t-values
Degrees of freedom (one- (two-
tail) tail)
------------------------------------------------------------------------
1................................................. 6.314 12.706
2................................................. 2.920 4.303
3................................................. 2.353 3.182
4................................................. 2.132 2.776
5................................................. 2.015 2.571
6................................................. 1.943 2.447
7................................................. 1.895 2.365
8................................................. 1.860 2.306
9................................................. 1.833 2.262
10................................................ 1.812 2.228
11................................................ 1.796 2.201
12................................................ 1.782 2.179
13................................................ 1.771 2.160
14................................................ 1.761 2.145
15................................................ 1.753 2.131
16................................................ 1.746 2.120
17................................................ 1.740 2.110
18................................................ 1.734 2.101
19................................................ 1.729 2.093
20................................................ 1.725 2.086
21................................................ 1.721 2.080
22................................................ 1.717 2.074
23................................................ 1.714 2.069
24................................................ 1.711 2.064
25................................................ 1.708 2.060
30................................................ 1.697 2.042
40................................................ 1.684 2.021
------------------------------------------------------------------------
Adopted from Table III of ``Statistical Tables for Biological,
Agricultural, and Medical Research'' (1947, R. A. Fisher and F.
Yates).
[47 FR 32367, July 26, 1982]
Appendix V to Part 264--Examples of Potentially Incompatible Waste
Many hazardous wastes, when mixed with other waste or materials at a
hazardous waste facility, can produce effects which are harmful to human
health and the environment, such as (1) heat or pressure, (2) fire or
explosion, (3) violent reaction, (4) toxic dusts, mists, fumes, or
gases, or (5) flammable fumes or gases.
Below are examples of potentially incompatible wastes, waste
components, and materials, along with the harmful consequences which
result from mixing materials in one group with materials in another
group. The list is intended as a guide to owners or operators of
treatment, storage, and disposal facilities, and to enforcement and
permit granting officials, to indicate the need for special precautions
when managing these potentially incompatible waste materials or
components.
This list is not intended to be exhaustive. An owner or operator
must, as the regulations require, adequately analyze his wastes so that
he can avoid creating uncontrolled substances or reactions of the type
listed below, whether they are listed below or not.
It is possible for potentially incompatible wastes to be mixed in a
way that precludes a reaction (e.g., adding acid to water rather than
water to acid) or that neutralizes them (e.g., a strong acid mixed with
a strong base), or that controls substances produced (e.g., by
generating flammable gases in a closed tank equipped so that ignition
can not occur, and burning the gases in an incinerator).
In the lists below, the mixing of a Group A material with a Group B
material may have the potential consequence as noted.
Group 1-A
Acetylene sludge
Alkaline caustic liquids
Alkaline cleaner
Alkaline corrosive liquids
Alkaline corrosive battery fluid
Caustic wastewater
Lime sludge and other corrosive alkalies
Lime wastewater
Lime and water
Spent caustic
Group 1-B
Acid sludge
Acid and water
Battery acid
Chemical cleaners
Electrolyte, acid
Etching acid liquid or solvent
Pickling liquor and other corrosive acids
Spent acid
Spent mixed acid
Spent sulfuric acid
Potential consequences: Heat generation; violent reaction.
Group 2-A
Aluminum
Beryllium
Calcium
Lithium
Magnesium
Potassium
Sodium
Zinc powder
Other reactive metals and metal hydrides
Group 2-B
Any waste in Group 1-A or
1-B
Potential consequences: Fire or explosion; generation of flammable
hydrogen gas.
[[Page 453]]
Group 3-A
Alcohols
Water
Group 3-B
Any concentrated waste in Groups 1-A or 1-B
Calcium
Lithium
Metal hydrides
Potassium
SO2 Cl2, SOCl2, PCl3,
CH3 SiCl3
Other water-reactive waste
Potential consequences: Fire, explosion, or heat generation;
generation of flammable or toxic gases.
Group 4-A
Alcohols
Aldehydes
Halogenated hydrocarbons
Nitrated hydrocarbons
Unsaturated hydrocarbons
Other reactive organic compounds and solvents
Group 4-B
Concentrated Group 1-A or 1-B wastes
Group 2-A wastes
Potential consequences: Fire, explosion, or violent reaction.
Group 5-A
Spent cyanide and sulfide solutions
Group 5-B
Group 1-B wastes
Potential consequences: Generation of toxic hydrogen cyanide or
hydrogen sulfide gas.
Group 6-A
Chlorates
Chlorine
Chlorites
Chromic acid
Hypochlorites
Nitrates
Nitric acid, fuming
Perchlorates
Permanganates
Peroxides
Other strong oxidizers
Group 6-B
Acetic acid and other organic acids
Concentrated mineral acids
Group 2-A wastes
Group 4-A wastes
Other flammable and combustible wastes
Potential consequences: Fire, explosion, or violent reaction.
Source: ``Law, Regulations, and Guidelines for Handling of Hazardous
Waste.'' California Department of Health, February 1975.
---------------------------------------------------------------------------
\1\ These include counties, city-county consolidations, and
independent cities. In the case of Alaska, the political jurisdictions
are election districts, and, in the case of Hawaii, the political
jurisdiction listed is the island of Hawaii.
[46 FR 2872, Jan. 12, 1981]
Appendix VI to Part 264--Political Jurisdictions \1\ in Which Compliance
With Sec. 264.18(a) Must Be Demonstrated
Alaska
Aleutian Islands
Anchorage
Bethel
Bristol Bay
Cordova-Valdez
Fairbanks-Fort Yukon
Juneau
Kenai-Cook Inlet
Ketchikan-Prince of Wales
Kodiak
Lynn Canal-Icy Straits
Palmer-Wasilla-Talkeena
Seward
Sitka
Wade Hampton
Wrangell Petersburg
Yukon-Kuskokwim
Arizona
Cochise
Graham
Greenlee
Yuma
California
All
Colorado
Archuleta
Conejos
Hinsdale
Mineral
Rio Grande
Saguache
Hawaii
Hawaii
Idaho
Bannock
Bear Lake
Bingham
Bonneville
Caribou
Cassia
Clark
Franklin
Fremont
Jefferson
Madison
Oneida
Power
Teton
Montana
Beaverhead
Broadwater
Cascade
Deer Lodge
Flathead
Gallatin
Granite
Jefferson
Lake
Lewis and Clark
Madison
Meagher
Missoula
Park
Powell
Sanders
[[Page 454]]
Silver Bow
Stillwater
Sweet Grass
Teton
Wheatland
Nevada
All
New Mexico
Bernalillo
Catron
Grant
Hidalgo
Los Alamos
Rio Arriba
Sandoval
Sante Fe
Sierra
Socorro
Taos
Torrance
Valencia
Utah
Beaver
Box Elder
Cache
Carbon
Davis
Duchesne
Emery
Garfield
Iron
Juab
Millard
Morgan
Piute
Rich
Salt Lake
Sanpete
Sevier
Summit
Tooele
Utah
Wasatch
Washington
Wayne
Weber
Washington
Chelan
Clallam
Clark
Cowlitz
Douglas
Ferry
Grant
Grays Harbor
Jefferson
King
Kitsap
Kittitas
Lewis
Mason
Okanogan
Pacific
Pierce
San Juan Islands
Skagit
Skamania
Snohomish
Thurston
Wahkiakum
Whatcom
Yakima
Wyoming
Fremont
Lincoln
Park
Sublette
Teton
Uinta
Yellowstone National
Park
[46 FR 57285, Nov. 23, 1981; 47 FR 953, Jan. 8, 1982]
Appendixes VII-VIII to Part 264 [Reserved]
Appendix IX to Part 264--Ground-Water Monitoring List \1\
Ground-Water Monitoring List \1\
----------------------------------------------------------------------------------------------------------------
Suggested
Common name \2\ CAS RN \3\ Chemical abstracts service index methods PQL ([mu]
name \4\ \5\ g/L) \6\
----------------------------------------------------------------------------------------------------------------
Acenaphthene............................. 83-32-9 Acenaphthylene, 1,2-dihydro-.... 8100 200
........... 8270 10
Acenaphthylene........................... 208-96-8 Acenaphthylene.................. 8100 200
........... 8270 10
Acetone.................................. 67-64-1 2-Propanone..................... 8240 100
Acetophenone............................. 98-86-2 Ethanone, 1-phenyl-............. 8270 10
Acetonitrile; Methyl cyanide............. 75-05-8 Acetonitrile.................... 8015 100
2-Acetylaminofluorene; 2-AAF............. 53-96-3 Acetamide, N-9H-fluoren-2-yl-... 8270 10
Acrolein................................. 107-02-8 2-Propenal...................... 8030 5
........... 8240 5
Acrylonitrile............................ 107-13-1 2-Propenenitrile................ 8030 5
........... 8240 5
Aldrin................................... 309-00-2 1,4:5,8-Dimethanonaphthalene, 8080 0.05
1,2,3,4,10,10-hexachloro- 8270 10
1,4,4a,5,8,8a-hexahydro-
(1[alpha],4[alpha], 4a[beta],
5[alpha],8[alpha],8a[beta])-
Allyl chloride........................... 107-05-1 1-Propene, 3-chloro-............ 8010 5
........... 8240 100
4-Aminobiphenyl.......................... 92-67-1 [1,1'-Biphenyl]- 4-amine........ 8270 10
Aniline.................................. 62-53-3 Benzenamine..................... 8270 10
Anthracene............................... 120-12-7 Anthracene...................... 8100 200
........... 8270 10
Antimony................................. (Total) Antimony........................ 6010 300
........... 7040 2,000
........... 7041 30
Aramite.................................. 140-57-8 Sulfurous acid, 2-chloroethyl 2- 8270 10
[4-(1,1-dimethylethyl)phenoxy]-
1-methylethyl ester.
Arsenic.................................. (Total) Arsenic......................... 6010 500
........... 7060 10
........... 7061 20
Barium................................... (Total) Barium.......................... 6010 20
........... 7080 1,000
[[Page 455]]
Benzene.................................. 71-43-2 Benzene......................... 8020 2
........... 8240 5
Benzo[a]anthracene; Benzanthracene....... 56-55-3 Benz[a]anthracene............... 8100 200
8270 10
Benzo[b]fluoranthene..................... 205-99-2 Benz[e]acephenanthrylene........ 8100 200
........... 8270 10
Benzo[k]fluoranthene..................... 207-08-9 Benzo[k]fluoranthene............ 8100 200
........... 8270 10
Benzo[ghi]perylene....................... 191-24-2 Benzo[ghi]perylene.............. 8100 200
........... 8270 10
Benzo[a]pyrene........................... 50-32-8 Benzo[a]pyrene.................. 8100 200
........... 8270 10
Benzyl alcohol........................... 100-51-6 Benzenemethanol................. 8270 20
Beryllium................................ (Total) Beryllium....................... 6010 3
........... 7090 50
........... 7091 2
alpha-BHC................................ 319-84-6 Cyclohexane, 1,2,3,4,5,6- 8080 0.05
hexachloro-,(1[alpha],
2[alpha],3[beta],
4[alpha],5[beta],6[beta])-
........... 8250 10
beta-BHC................................. 319-85-7 Cyclohexane, 1,2,3,4,5,6- 8080 0.05
hexachloro-,(1[alpha],2[beta],
3[alpha],4[beta],
5[alpha],6[beta])-
........... 8250 40
delta-BHC................................ 319-86-8 Cyclohexane, 1,2,3,4,5,6- 8080 0.1
hexachloro-,(1[alpha],2[alpha],
3[alpha],
4[beta],5[alpha],6[beta])-
........... 8250 30
gamma-BHC; Lindane....................... 58-89-9 Cyclohexane, 1,2,3,4,5,6- 8080 0.05
hexachloro-,(1[alpha],
2[alpha], 3[beta],
4[alpha],5[alpha],6[beta])-
........... 8250 10
Bis(2-chloroethoxy)methane............... 111-91-1 Ethane, 1,1'-[methylenebis 8270 10
(oxy)]bis [2-chloro-.
Bis(2-chloroethyl)ether.................. 111-44-4 Ethane, 1,1'-oxybis[2-chloro-... 8270 10
Bis(2-chloro-1-methylethyl) ether; 2,2'- 108-60-1 Propane, 2,2'-oxybis[1-chloro-.. 8010 100
Di- chlorodiisopropyl ether. 8270 10
Bis(2-ethylhexyl) phthalate.............. 117-81-7 1,2-Benzenedicarboxylic acid, 8060 20
bis(2-ethylhexyl)ester. 8270 10
Bromodichloromethane..................... 75-27-4 Methane, bromodichloro-......... 8010 1
8240 5
Bromoform; Tribromomethane............... 75-25-2 Methane, tribromo-.............. 8010 2
8240 5
4-Bromophenyl phenyl ether............... 101-55-3 Benzene, 1-bromo-4-phenoxy-..... 8270 10
Butyl benzyl phthalate; Benzyl butyl 85-68-7 1,2-Benzenedicarboxylic acid, 8060 5
phthalate butyl phenylmethyl ester. 8270 10
Cadmium.................................. (Total) Cadmium......................... 6010 40
........... 7130 50
........... 7131 1
Carbon disulfide......................... 75-15-0 Carbon disulfide................ 8240 5
Carbon tetrachloride..................... 56-23-5 Methane, tetrachloro-........... 8010 1
8240 5
Chlordane................................ 57-74-9 4,7-Methano-1H-indene, 8080 0.1
1,2,4,5,6,7,8,8-octachloro- 8250 10
2,3,3a,4,7,7a- hexahydro-.
p-Chloroaniline.......................... 106-47-8 Benzenamine, 4-chloro-.......... 8270 20
Chlorobenzene............................ 108-90-7 Benzene, chloro-................ 8010 2
........... 8020 2
........... 8240 5
Chlorobenzilate.......................... 510-15-6 Benzeneacetic acid, 4-chloro- 8270 10
[alpha]-(4-chlorophenyl)-
[alpha]-hydroxy-, ethyl ester.
p-Chloro-m-cresol........................ 59-50-7 Phenol, 4-chloro-3-methyl-...... 8040 5
........... 8270 20
Chloroethane; Ethyl chloride............. 75-00-3 Ethane, chloro-................. 8010 5
8240 10
Chloroform............................... 67-66-3 Methane, trichloro-............. 8010 0.5
........... 8240 5
2-Chloronaphthalene...................... 91-58-7 Naphthalene, 2-chloro-.......... 8120 10
8270 10
2-Chlorophenol........................... 95-57-8 Phenol, 2-chloro-............... 8040 5
........... 8270 10
4-Chlorophenyl phenyl ether.............. 7005-72-3 Benzene, 1-chloro-4-phenoxy-.... 8270 10
Chloroprene.............................. 126-99-8 1,3-Butadiene, 2-chloro-........ 8010 50
........... 8240 5
Chromium................................. (Total) Chromium........................ 6010 70
[[Page 456]]
........... 7190 500
........... 7191 10
Chrysene................................. 218-01-9 Chrysene........................ 8100 200
........... 8270 10
Cobalt................................... (Total) Cobalt.......................... 6010 70
........... 7200 500
........... 7201 10
Copper................................... (Total) Copper.......................... 6010 60
........... 7210 200
m-Cresol................................. 108-39-4 Phenol, 3-methyl-............... 8270 10
o-Cresol................................. 95-48-7 Phenol, 2-methyl-............... 8270 10
p-Cresol................................. 106-44-5 Phenol, 4-methyl-............... 8270 10
Cyanide.................................. 57-12-5 Cyanide......................... 9010 40
2,4-D; 2,4-Dichlorophenoxyacetic acid.... 94-75-7 Acetic acid, (2,4- 8150 10
dichlorophenoxy)-.
4,4'-DDD................................. 72-54-8 Benzene 1,1'-(2,2- 8080 0.1
dichloroethylidene) bis[4- 8270 10
chloro-.
4,4'-DDE................................. 72-55-9 Benzene, 1,1'- 8080 0.05
(dichloroethenylidene) bis[4- 8270 10
chloro-.
4,4'-DDT................................. 50-29-3 Benzene, 1,1'-(2,2,2- 8080 0.1
trichloroethylidene) bis[4- 8270 10
chloro-.
Diallate................................. 2303-16-4 Carbamothioic acid, bis(1- 8270 10
methylethyl)- , S- (2,3-
dichloro-2-propenyl) ester.
Dibenz[a,h]anthracene.................... 53-70-3 Dibenz[a,h]anthracene........... 8100 200
........... 8270 10
Dibenzofuran............................. 132-64-9 Dibenzofuran.................... 8270 10
Dibromochloromethane; 124-48-1 Methane, dibromochloro-......... 8010 1
Chlorodibromomethane 8240 5
1,2-Dibromo-3-chloropropane; DBCP........ 96-12-8 Propane, 1,2-dibromo-3-chloro-.. 8010 100
8240 5
........... 8270 10
1,2-Dibromoethane; Ethylene dibromide.... 106-93-4 Ethane, 1,2-dibromo-............ 8010 10
8240 5
Di-n-butyl phthalate..................... 84-74-2 1,2-Benzenedicarboxylic acid, 8060 5
dibutyl ester. 8270 10
o-Dichlorobenzene........................ 95-50-1 Benzene, 1,2-dichloro-.......... 8010 2
........... 8020 5
........... 8120 10
........... 8270 10
m-Dichlorobenzene........................ 541-73-1 Benzene, 1,3-dichloro-.......... 8010 5
........... 8020 5
........... 8120 10
........... 8270 10
p-Dichlorobenzene........................ 106-46-7 Benzene, 1,4-dichloro-.......... 8010 2
........... 8020 5
........... 8120 15
........... 8270 10
3,3'-Dichlorobenzidine................... 91-94-1 [1,1'-Biphenyl]- 4,4'- diamine, 8270 20
3,3'-dichloro-.
trans-1,4-Dichloro-2-butene.............. 110-57-6 2-Butene, 1,4-dichloro-, (E)-... 8240 5
Dichlorodifluoromethane.................. 75-71-8 Methane, dichlorodifluoro-...... 8010 10
8240 5
1,1-Dichloroethane....................... 75-34-3 Ethane, 1,1-dichloro-........... 8010 1
........... 8240 5
1,2-Dichloroethane; Ethylene dichloride.. 107-06-2 Ethane, 1,2-dichloro-........... 8010 0.5
8240 5
1,1-Dichloroethylene; Vinylidene chloride 75-35-4 Ethene, 1,1-dichloro-........... 8010 1
8240 5
trans-1,2-Dichloroethylene............... 156-60-5 Ethene, 1,2-dichloro-, (E)-..... 8010 1
8240 5
2,4-Dichlorophenol....................... 120-83-2 Phenol, 2,4-dichloro-........... 8040 5
........... 8270 10
2,6-Dichlorophenol....................... 87-65-0 Phenol, 2,6-dichloro-........... 8270 10
1,2-Dichloropropane...................... 78-87-5 Propane, 1,2-dichloro-.......... 8010 0.5
8240 5
cis-1,3-Dichloropropene.................. 10061-01-5 1-Propene, 1,3-dichloro-, (Z)-.. 8010 20
8240 5
trans-1,3-Dichloropropene................ 10061-02-6 1-Propene, 1,3-dichloro-, (E)-.. 8010 5
8240 5
[[Page 457]]
Dieldrin................................. 60-57-1 2,7:3,6-Dimethanonaphth [2,3- 8080 0.05
b]oxirene, 3,4,5,6,9,9- 8270 10
hexachloro- 1a,2,2a,3,6,6a,7,7a-
octahydro-,
(1a[alpha],2[beta], 2a[alpha],
3[beta],6[beta],6a[alpha],7[bet
a],7a[alpha])-
Diethyl phthalate........................ 84-66-2 1,2-Benzenedicarboxylic acid, 8060 5
diethyl ester. 8270 10
O,O-Diethyl O-2-pyrazinyl 297-97-2 Phosphorothioic acid, O,O- 8270 10
phosphorothioate; Thionazin diethyl O-pyrazinyl ester.
Dimethoate............................... 60-51-5 Phosphorodithioic acid, O,O- 8270 10
dimethyl S-[2-(methylamino)-2-
oxoethyl] ester.
p-(Dimethylamino)azobenzene.............. 60-11-7 Benzenamine, N,N-dimethyl-4- 8270 10
(phenylazo)-.
7,12-Dimethylbenz[a]anthracene........... 57-97-6 Benz[a]anthracene, 7,12-dimethyl- 8270 10
.
3,3'-Dimethylbenzidine................... 119-93-7 [1,1'-Biphenyl]-4,4'-diamine, 8270 10
3,3'-dimethyl-.
alpha, alpha-Dimethylphenethylamine...... 122-09-8 Benzeneethanamine, 8270 10
[alpha],[alpha]-dimethyl-.
2,4-Dimethylphenol....................... 105-67-9 Phenol, 2,4-dimethyl-........... 8040 5
........... 8270 10
Dimethyl phthalate....................... 131-11-3 1,2-Benzenedicarboxylic acid, 8060 5
dimethyl ester. 8270 10
m-Dinitrobenzene......................... 99-65-0 Benzene, 1,3-dinitro-........... 8270 10
4,6-Dinitro-o-cresol..................... 534-52-1 Phenol, 2-methyl-4,6-dinitro-... 8040 150
........... 8270 50
2,4-Dinitrophenol........................ 51-28-5 Phenol, 2,4-dinitro-............ 8040 150
........... 8270 50
2,4-Dinitrotoluene....................... 121-14-2 Benzene, 1-methyl-2,4-dinitro-.. 8090 0.2
........... 8270 10
2,6-Dinitrotoluene....................... 606-20-2 Benzene, 2-methyl-1,3-dinitro-.. 8090 0.1
........... 8270 10
Dinoseb; DNBP; 2-sec-Butyl- 4,6- 88-85-7 Phenol, 2-(1-methylpropyl)-4,6- 8150 1
dinitrophenol dinitro-. 8270 10
Di-n-octyl phthalate..................... 117-84-0 1,2-Benzenedicarboxylic acid, 8060 30
dioctyl ester. 8270 10
1,4-Dioxane.............................. 123-91-1 1,4-Dioxane..................... 8015 150
Diphenylamine............................ 122-39-4 Benzenamine, N-phenyl-.......... 8270 10
Disulfoton............................... 298-04-4 Phosphorodithioic acid, O,O- 8140 2
diethyl S-[2- 8270 10
(ethylthio)ethyl]ester
Endosulfan I............................. 959-98-8 6,9-Methano-2,4,3- 8080 0.1
benzodioxathiepin, 8250 10
6,7,8,9,10,10-hexachloro-
1,5,5a,6,9,9a-hexahydro-, 3-
oxide,
(3[alpha],5a[beta],6[alpha],9[a
lpha],9a[beta])-.
Endosulfan II............................ 33213-65-9 6,9-Methano-2,4,3- 8080 0.05
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- 8080 0.5
benzodioxathiepin, 8270 10
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- 8080 0.1
b]oxirene, 3,4,5,6,9,9- 8250 10
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- 8080 0.2
Methenocyclopenta[cd]pentalene- 8270 10
5-carboxaldehyde, 2,2a,3,3,4,7-
hexachlorodecahydro-,
(1[alpha],2[beta],
2a[beta],4[beta],
4a[beta],5[beta],6a[beta],6b[be
ta],7R*)-
Ethylbenzene............................. 100-41-4 Benzene, ethyl-................. 8020 2
........... 8240 5
Ethyl methacrylate....................... 97-63-2 2-Propenoic acid, 2-methyl-, 8015 10
ethyl ester. 8240 5
........... 8270 10
Ethyl methanesulfonate................... 62-50-0 Methanesulfonic acid, ethyl 8270 10
ester.
Famphur.................................. 52-85-7 Phosphorothioic acid, O-[4- 8270 10
[(dimethylamino)sulfonyl]phenyl
]-O,O-dimethyl ester.
Fluoranthene............................. 206-44-0 Fluoranthene.................... 8100 200
........... 8270 10
Fluorene................................. 86-73-7 9H-Fluorene..................... 8100 200
........... 8270 10
Heptachlor............................... 76-44-8 4,7-Methano-1H-indene, 8080 0.05
1,4,5,6,7,8,8-heptachloro- 8270 10
3a,4,7,7a-tetrahydro-..........
Heptachlor epoxide....................... 1024-57-3 2,5-Methano-2H-indeno[1,2- 8080 1
b]oxirene, 2,3,4,5,6,7,7- 8270 10
heptachloro-1a,1b,5,5a,6,6a,-
hexahydro-,
(1a[alpha],1b[beta],2[alpha],5[
alpha],5a[beta],6[beta],6a[alph
a])
Hexachlorobenzene........................ 118-74-1 Benzene, hexachloro-............ 8120 0.5
........... 8270 10
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Hexachlorobutadiene...................... 87-68-3 1,3-Butadiene, 1,1,2,3,4,4- 8120 5
hexachloro-. 8270 10
Hexachlorocyclopentadiene................ 77-47-4 1,3-Cyclopentadiene, 1,2,3,4,5,5- 8120 5
hexachloro-. 8270 10
Hexachloroethane......................... 67-72-1 Ethane, hexachloro-............. 8120 0.5
........... 8270 10
Hexachlorophene.......................... 70-30-4 Phenol, 2,2'-methylenebis[3,4,6- 8270 10
trichloro-.
Hexachloropropene........................ 1888-71-7 1-Propene, 1,1,2,3,3,3- 8270 10
hexachloro-.
2-Hexanone............................... 591-78-6 2-Hexanone...................... 8240 50
Indeno(1,2,3-cd)pyrene................... 193-39-5 Indeno[1,2,3-cd]pyrene.......... 8100 200
8270 10
Isobutyl alcohol......................... 78-83-1 1-Propanol, 2-methyl-........... 8015 50
Isodrin.................................. 465-73-6 1,4,5,8- 8270 10
Dimethanonaphthalene,1,2,3,4,10
,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- 8090 60
trimethyl-. 8270 10
Isosafrole............................... 120-58-1 1,3-Benzodioxole, 5-(1-propenyl)- 8270 10
.
Kepone................................... 143-50-0 1,3,4-Metheno-2H-cyclobuta- 8270 10
[cd]pentalen-2-one,
1,1a,3,3a,4,5,5,5a,5b,6-
decachlorooctahydro-
Lead..................................... (Total) Lead............................ 6010 40
........... 7420 1,000
........... 7421 10
Mercury.................................. (Total) Mercury......................... 7470 2
Methacrylonitrile........................ 126-98-7 2-Propenenitrile, 2-methyl-..... 8015 5
........... 8240 5
Methapyrilene............................ 91-80-5 1,2,Ethanediamine, N,N-dimethyl- 8270 10
N'-2- pyridinyl- N'-(2-
thienylmethyl)-.
Methoxychlor............................. 72-43-5 Benzene, 1,1'- 8080 2
(2,2,2,trichloroethylidene)bis[ 8270 10
4-methoxy-.
Methyl bromide; Bromomethane............. 74-83-9 Methane, bromo-................. 8010 20
8240 10
Methyl chloride; Chloromethane........... 74-87-3 Methane, chloro-................ 8010 1
8240 10
3-Methylcholanthrene..................... 56-49-5 Benz[j]aceanthrylene, 1,2- 8270 10
dihydro-3-methyl-.
Methylene bromide; Dibromomethane........ 74-95-3 Methane, dibromo-............... 8010 15
8240 5
Methylene chloride; Dichloromethane...... 75-09-2 Methane, dichloro-.............. 8010 5
8240 5
Methyl ethyl ketone; MEK................. 78-93-3 2-Butanone...................... 8015 10
8240 100
Methyl iodide; Iodomethane............... 74-88-4 Methane, iodo-.................. 8010 40
8240 5
Methyl methacrylate...................... 80-62-6 2-Propenoic acid, 2-methyl-, 8015 2
methyl ester. 8240 5
Methyl methanesulfonate.................. 66-27-3 Methanesulfonic acid, methyl 8270 10
ester.
2-Methylnaphthalene...................... 91-57-6 Naphthalene, 2-methyl-.......... 8270 10
Methyl parathion; Parathion methyl....... 298-00-0 Phosphorothioic acid, O,O- 8140 0.5
dimethyl O-(4-nitrophenyl) 8270 10
ester.
4-Methyl-2-pentanone; Methyl isobutyl 108-10-1 2-Pentanone, 4-methyl-.......... 8015 5
ketone. 8240 50
Naphthalene.............................. 91-20-3 Naphthalene..................... 8100 200
........... 8270 10
1,4-Naphthoquinone....................... 130-15-4 1,4-Naphthalenedione............ 8270 10
1-Naphthylamine.......................... 134-32-7 1-Naphthalenamine............... 8270 10
2-Naphthylamine.......................... 91-59-8 2-Naphthalenamine............... 8270 10
Nickel................................... (Total) Nickel.......................... 6010 50
........... 7520 400
o-Nitroaniline........................... 88-74-4 Benzenamine, 2-nitro-........... 8270 50
m-Nitroaniline........................... 99-09-2 Benzenamine, 3-nitro-........... 8270 50
p-Nitroaniline........................... 100-01-6 Benzenamine, 4-nitro-........... 8270 50
Nitrobenzene............................. 98-95-3 Benzene, nitro-................. 8090 40
........... 8270 10
o-Nitrophenol............................ 88-75-5 Phenol, 2-nitro-................ 8040 5
........... 8270 10
p-Nitrophenol............................ 100-02-7 Phenol, 4-nitro-................ 8040 10
........... 8270 50
4-Nitroquinoline 1-oxide................. 56-57-5 Quinoline, 4-nitro-, 1-oxide.... 8270 10
N-Nitrosodi-n-butylamine................. 924-16-3 1-Butanamine, N-butyl-N-nitroso- 8270 10
N-Nitrosodiethylamine.................... 55-18-5 Ethanamine, N-ethyl-N-nitroso-.. 8270 10
[[Page 459]]
N-Nitrosodimethylamine................... 62-75-9 Methanamine, N-methyl-N-nitroso- 8270 10
N-Nitrosodiphenylamine................... 86-30-6 Benzenamine, N-nitroso-N-phenyl- 8270 10
N-Nitrosodipropylamine; Di-n- 621-64-7 1-Propanamine, N-nitroso-N- 8270 10
propylnitrosamine. propyl-.
N-Nitrosomethylethylamine................ 10595-95-6 Ethanamine, N-methyl-N-nitroso-. 8270 10
N-Nitrosomorpholine...................... 59-89-2 Morpholine, 4-nitroso-.......... 8270 10
N-Nitrosopiperidine...................... 100-75-4 Piperidine, 1-nitroso-.......... 8270 10
N-Nitrosopyrrolidine..................... 930-55-2 Pyrrolidine, 1-nitroso-......... 8270 10
5-Nitro-o-toluidine...................... 99-55-8 Benzenamine, 2-methyl-5-nitro-.. 8270 10
Parathion................................ 56-38-2 Phosphorothioic acid, O,O- 8270 10
diethyl-O-(4-nitrophenyl) ester
Polychlorinated biphenyls; PCBs.......... See Note 7 1,1'-Biphenyl, chloro 8080 50
derivatives. 8250 100
Polychlorinated dibenzo-p-dioxins; PCDDs. See Note 8 Dibenzo[b,e][1,4]dioxin, chloro 8280 0.01
derivatives.
Polychlorinated dibenzofurans; PCDFs..... See Note 9 Dibenzofuran, chloro derivatives 8280 0.01
Pentachlorobenzene....................... 608-93-5 Benzene, pentachloro-........... 8270 10
Pentachloroethane........................ 76-01-7 Ethane, pentachloro-............ 8240 5
........... 8270 10
Pentachloronitrobenzene.................. 82-68-8 Benzene, pentachloronitro-...... 8270 10
Pentachlorophenol........................ 87-86-5 Phenol, pentachloro-............ 8040 5
........... 8270 50
Phenacetin............................... 62-44-2 Acetamide, N-(4-ethoxyphenyl)... 8270 10
Phenanthrene............................. 85-01-8 Phenanthrene.................... 8100 200
........... 8270 10
Phenol................................... 108-95-2 Phenol.......................... 8040 1
........... 8270 10
p-Phenylenediamine....................... 106-50-3 1,4-Benzenediamine.............. 8270 10
Phorate.................................. 298-02-2 Phosphorodithioic acid, O,O- 8140 2
diethyl S- [(ethylthio)methyl] 8270 10
ester
2-Picoline............................... 109-06-8 Pyridine, 2-methyl-............. 8240 5
........... 8270 10
Pronamide................................ 23950-58-5 Benzamide, 3,5-dichloro-N-(1,1- 8270 10
dimethyl-2-propynyl)-.
Propionitrile; Ethyl cyanide............. 107-12-0 Propanenitrile.................. 8015 60
8240 5
Pyrene................................... 129-00-0 Pyrene.......................... 8100 200
........... 8270 10
Pyridine................................. 110-86-1 Pyridine........................ 8240 5
........... 8270 10
Safrole.................................. 94-59-7 1,3-Benzodioxole, 5-(2-propenyl)- 8270 10
.
Selenium................................. (Total) Selenium........................ 6010 750
........... 7740 20
........... 7741 20
Silver................................... (Total) Silver.......................... 6010 70
........... 7760 100
Silvex; 2,4,5-TP......................... 93-72-1 Propanoic acid, 2-(2,4,5- 8150 2
trichlorophenoxy)-.
Styrene.................................. 100-42-5 Benzene, ethenyl-............... 8020 1
........... 8240 5
Sulfide.................................. 18496-25-8 Sulfide......................... 9030 10,000
2,4,5-T; 2,4,5-Trichlorophenoxyacetic 93-76-5 Acetic acid, (2,4,5- 8150 2
acid. trichlorophenoxy)-.
2,3,7,8-TCDD; 2,3,7,8-Tetrachlorodibenzo- 1746-01-6 Dibenzo[b,e][1,4]dioxin, 2,3,7,8- 8280 0.005
p- dioxin tetrachloro-.
1,2,4,5-Tetrachlorobenzene............... 95-94-3 Benzene, 1,2,4,5-tetrachloro-... 8270 10
1,1,1,2-Tetrachloroethane................ 630-20-6 Ethane, 1,1,1,2-tetrachloro-.... 8010 5
8240 5
1,1,2,2-Tetrachloroethane................ 79-34-5 Ethane, 1,1,2,2-tetrachloro-.... 8010 0.5
8240 5
Tetrachloroethylene; Perchloroethylene; 127-18-4 Ethene, tetrachloro-............ 8010 0.5
Tetrachloroethene. 8240 5
2,3,4,6-Tetrachlorophenol................ 58-90-2 Phenol, 2,3,4,6-tetrachloro-.... 8270 10
Tetraethyl dithiopyrophosphate; Sulfotepp 3689-24-5 Thiodiphosphoric acid ([(HO)2 8270 10
P(S)]2 O), tetraethyl ester
Thallium................................. (Total) Thallium........................ 6010 400
........... 7840 1,000
........... 7841 10
Tin...................................... (Total) Tin............................. 7870 8,000
Toluene.................................. 108-88-3 Benzene, methyl-................ 8020 2
[[Page 460]]
........... 8240 5
o-Toluidine.............................. 95-53-4 Benzenamine, 2-methyl-.......... 8270 10
Toxaphene................................ 8001-35-2 Toxaphene....................... 8080 2
........... 8250 10
1,2,4-Trichlorobenzene................... 120-82-1 Benzene, 1,2,4-trichloro-....... 8270 10
1,1,1-Trichloroethane; Methylchloroform.. 71-55-6 Ethane, 1,1,1-trichloro-........ 8240 5
1,1,2-Trichloroethane.................... 79-00-5 Ethane, 1,1,2-trichloro-........ 8010 0.2
........... 8240 5
Trichloroethylene; Trichloroethene....... 79-01-6 Ethene, trichloro-.............. 8010 1
........... 8240 5
Trichlorofluoromethane................... 75-69-4 Methane, trichlorofluoro-....... 8010 10
8240 5
2,4,5-Trichlorophenol.................... 95-95-4 Phenol, 2,4,5-trichloro-........ 8270 10
2,4,6-Trichlorophenol.................... 88-06-2 Phenol, 2,4,6-trichloro-........ 8040 5
8270 10
1,2,3-Trichloropropane................... 96-18-4 Propane, 1,2,3-trichloro-....... 8010 10
8240 5
O,O,O-Triethyl phosphorothioate.......... 126-68-1 Phosphorothioic acid, O,O,O- 8270 10
triethyl ester.
sym-Trinitrobenzene...................... 99-35-4 Benzene, 1,3,5-trinitro-........ 8270 10
Vanadium................................. (Total) Vanadium........................ 6010 80
........... 7910 2,000
........... 7911 40
Vinyl acetate............................ 108-05-4 Acetic acid, ethenyl ester...... 8240 5
Vinyl chloride........................... 75-01-4 Ethene, chloro-................. 8010 2
........... 8240 10
Xylene (total)........................... 1330-20-7 Benzene, dimethyl-.............. 8020 5
........... 8240 5
Zinc..................................... (Total) Zinc............................ 6010 20
........... 7950 50
----------------------------------------------------------------------------------------------------------------
\1\ The regulatory requirements pertain only to the list of substances; the right hand columns (Methods and PQL)
are given for informational purposes only. See also footnotes 5 and 6.
\2\ Common names are those widely used in government regulations, scientific publications, and commerce;
synonyms exist for many chemicals.
\3\ Chemical Abstracts Service registry number. Where ``Total'' is entered, all species in the ground water that
contain this element are included.
\4\ CAS index names are those used in the 9th Cumulative Index.
\5\ Suggested methods refer to analytical procedure numbers used in the EPA publication, SW-846, ``Test Methods
for Evaluating Solid Waste'', Third Edition. Analytical details can be found in SW-846 and in documentation on
file at the Agency. The packed column gas chromatography methods 8010, 8020, 8030, 8040, 8060, 8080, 8090,
8110, 8120, 8140, 8150, 8240, and 8250 were promulgated methods through Update IIB of SW-846 and, as of Update
III, the Agency has replaced these methods with ``capillary column GC methods'', as the suggested methods.
\6\ Practical Quantitation Limits (PQLs) are the lowest concentrations of analytes in ground waters that can be
reliably determined within specified limits of precision and accuracy by the indicated methods under routine
laboratory operating conditions. The PQLs listed are generally stated to one significant figure. CAUTION: The
PQL values in many cases are based only on a general estimate for the method and not on a determination for
individual compounds; PQLs are not a part of the regulation.
\7\ 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). The PQL shown is an average value for PCB congeners.
\8\ This category contains congener chemicals, including tetrachlorodibenzo-p-dioxins (see also 2,3,7,8-TCDD),
pentachlorodibenzo-p-dioxins, and hexachlorodibenzo-p-dioxins. The PQL shown is an average value for PCDD
congeners.
\9\ This category contains congener chemicals, including tetrachlorodibenzofurans, pentachlorodibenzofurans, and
hexachlorodibenzofurans. The PQL shown is an average value for PCDF congeners.
[52 FR 25947, July 9, 1987, as amended at 62 FR 32462, June 13, 1997]
[[Page 461]]