Washington Administrative Code › Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508) › Chapter 173-340 - Model Toxics Control Act-Cleanup › Part 9 - TABLES › Section 173-340-900 - Tables

Current through Register Vol. 24-14, July 15, 2024
Table 708-1: Toxicity Equivalency Factors for
				  Chlorinated dibenzo-p-dioxins and Chlorinated Dibenzofurans
				  Congeners
CAS Number
Hazardous Substance
Toxicity Equivalency Factor
								(unitless)(1)
Dioxin Congeners
1746-01-6
2,3,7,8-Tetrachloro dibenzo-p-dioxin
1
40321-76-4
1,2,3,7,8-Pentachloro dibenzo-p-dioxin
1
39227-28-6
1,2,3,4,7,8-Hexachloro dibenzo-p-dioxin
0.1
57653-85-7
1,2,3,6,7,8-Hexachloro dibenzo-p-dioxin
0.1
19408-74-3
1,2,3,7,8,9-Hexachloro dibenzo-p-dioxin
0.1
35822-46-9
1,2,3,4,6,7,8-Heptachloro dibenzo-p-dioxin
0.01
3268-87-9
1,2,3,4,6,7,8,9-Octachloro dibenzo-p-dioxin
0.0003
Furan Congeners
51207-31-9
2,3,7,8-Tetrachloro dibenzofuran
0.1
57117-41-6
1,2,3,7,8-Pentachloro dibenzofuran
0.03
57117-31-4
2,3,4,7,8-Pentachloro dibenzofuran
0.3
70648-26-9
1,2,3,4,7,8-Hexachloro dibenzofuran
0.1
57117-44-9
1,2,3,6,7,8-Hexachloro dibenzofuran
0.1
72918-21-9
1,2,3,7,8,9-Hexachloro dibenzofuran
0.1
60851-34-5
2,3,4,6,7,8-Hexachloro dibenzofuran
0.1
67562-39-4
1,2,3,4,6,7,8-Heptachloro dibenzofuran
0.01
55673-89-7
1,2,3,4,7,8,9-Heptachloro dibenzofuran
0.01
39001-02-0
1,2,3,4,6,7,8,9-Octachloro dibenzofuran
0.0003
(1)Source: Van den Berg
								et al. 2006. The 2005 World Health Organization Re-evaluation of Human and
								Mammalian Toxic Equivalency Factors for Dioxins and Dioxin-like
								Compounds.
Toxicological Sciences 2006 93(2):223-241;
								doi:10.1093/toxsci/kfl055.
Table 708-2: Toxicity Equivalency Factors for Minimum
				  Required
Carcinogenic Polyaromatic Hydrocarbons (cPAHs) under
				  WAC 173-340-708(e)
CAS Number
Hazardous Substance
TEF
								(unitless)(1)
50-32-08
benzo[a]pyrene
1
56-55-3
benzo[a]anthracene
0.1
205-99-2
benzo[b]fluoranthene
0.1
207-08-9
benzo[k]fluoranthene
0.1
218-01-9
chrysene
0.01
53-70-3
dibenz[a, h]anthracene
0.1
193-39-5
indeno[1,2,3-cd]pyrene
0.1
(1)Source: Cal-EPA,
								2005. Air Toxics Hot Spots Program Risk Assessment Guidelines, Part II
								Technical Support Document for Describing Available Cancer Potency Factors.
								Office of Environmental Health Hazard Assessment, California Environmental
								Protection Agency. May 2005.
Table 708-3: Toxicity Equivalency Factors for
				  Carcinogenic Polyaromatic Hydrocarbons (cPAHs) that May be Required under WAC
				  173-340-708(8)(e)(v)
CAS Number
Hazardous Substance
TEF
								(unitless)(1)
205-82-3
benzo(j)fluoranthene
0.1
224-42-0
dibenz[a, j]acridine
0.1
226-36-8
dibenz[a, h]acridine
0.1
194-59-2
7H-dibenzo[c, g]carbazole
1
192-65-4
dibenzo[a, e]pyrene
1
189-64-0
dibenzo[a, h]pyrene
10
189-55-9
dibenzo[a, i]pyrene
10
191-30-0
dibenzo[a, l]pyrene
10
3351-31-3
5-methylchrysene
1
5522-43-0
1-nitropyrene
0.1
57835-92-4
4-nitropyrene
0.1
42397-64-8
1,6-dinitropyrene
10
42397-65-9
1,8-dinitropyrene
1
7496-02-8
6-nitrochrysene
10
607-57-8
2-nitrofluorene
0.01
57-97-6
7,12-dimethylbenzanthracene
10
56-49-5
3-methylcholanthrene
1
602-87-9
5-nitroacenaphthene
0.01
(1)Source: Cal-EPA,
								2005. Air Toxics Hot Spots Program Risk Assessment Guidelines, Part II
								Technical Support Document for Describing Available Cancer Potency Factors.
								Office of Environmental Health Hazard Assessment, California Environmental
								Protection Agency. May 2005.
Table 708-4: Toxicity Equivalency Factors for
				  Dioxin-Like Polychlorinated Biphenyls (PCBs)
CAS Number
Hazardous Substance
TEF
								(unitless)(1)
Dioxin-Like PCBs
32598-13-3
3,3',4,4'-Tetrachlorobiphenyl (PCB 77)
0.0001
70362-50-4
3,4,4',5- Tetrachlorobiphenyl (PCB 81)
0.0003
32598-14-4
2,3,3',4,4'-Pentachlorobiphenyl (PCB 105)
0.00003
74472-37-0
2,3,4,4',5-Pentachlorobiphenyl (PCB 114)
0.00003
31508-00-6
2,3',4,4',5-Pentachlorobiphenyl (PCB 118)
0.00003
65510-44-3
2',3,4,4',5-Pentachlorobiphenyl (PCB 123)
0.00003
57465-28-8
3,3',4,4',5-Pentachlorobiphenyl (PCB 126)
0.1
38380-08-4
2,3,3',4,4',5-Hexachlorobiphenyl (PCB 156)
0.00003
69782-90-7
2,3,3',4,4',5'-Hexachlorobiphenyl (PCB 157)
0.00003
52663-72-6
2,3',4,4',5,5'-Hexachlorobiphenyl (PCB 167)
0.00003
32774-16-6
3,3',4,4',5,5'-Hexachlorobiphenyl (PCB 169)
0.03
39635-31-9
2,3,3',4,4',5,5'-Heptachlorobiphenyl (PCB
								189)
0.00003
(1)Source: Van den Berg
								et al. 2006. The 2005 World Health Organization Re-evaluation of Human and
								Mammalian Toxic Equivalency Factors for Dioxins and Dioxin-like Compounds.
								Toxicological Sciences 2006 93(2):223-241; doi:10.1093/toxsci/kfl055.
Table 720-1
Method A Cleanup Levels for
				  Groundwater.a
Hazardous Substance
CAS Number
Cleanup Level
Arsenic
7440-38-2
5 ug/literb
Benzene
71-43-2
5 ug/literc
Benzo(a)pyrene
50-32-8
0.1 ug/literd
Cadmium
7440-43-9
5 ug/litere
Chromium (Total)
7440-47-3
50 ug/literf
DDT
50-29-3
0.3 ug/literg
1,2 Dichloroethane (EDC)
107-06-2
5 ug/literh
Ethylbenzene
100-41-4
700 ug/literi
Ethylene dibromide (EDB)
106-93-4
0.01 ug/literj
Gross Alpha Particle Activity
15 pCi/literk
Gross Beta Particle Activity
4 mrem/yrl
Lead
7439-92-1
15 ug/literm
Lindane
58-89-9
0.2 ug/litern
Methylene chloride
75-09-2
5 ug/litero
Mercury
7439-97-6
2 ug/literp
MTBE
1634-04-4
20 ug/literq
Naphthalenes
91-20-3
160 ug/literr
PAHs (carcinogenic)
See
								benzo(a)pyrened
PCB mixtures
0.1 ug/liters
Radium 226 and 228
5 pCi/litert
Radium 226
3 pCi/literu
Tetrachloroethylene
127-18-4
5 ug/literv
Toluene
108-88-3
1,000 ug/literw
Total Petroleum
								Hydrocarbonsx
[Note: Must also test for and meet cleanup levels
								for other petroleum components--see footnotes!]
Gasoline Range Organics
Benzene present in groundwater
800 ug/liter
No detectable benzene in groundwater
1,000 ug/liter
Diesel Range Organics
500 ug/liter
Heavy Oils
500 ug/liter
Mineral Oil
500 ug/liter
1,1,1 Trichloroethane
71-55-6
200 ug/litery
Trichloroethylene
79-01-6
5 ug/literz
Vinyl chloride
75-01-4
0.2 ug/literaa
Xylenes
1330-20-7
1,000 ug/literbb
Footnotes:
a
Caution on misusing this table.
This
								table has been developed for specific purposes. It is intended to provide
								conservative cleanup levels for drinking water beneficial uses at sites
								undergoing routine cleanup actions or those sites with relatively few hazardous
								substances. This table may not be appropriate for defining cleanup levels at
								other sites. For these reasons, the values in this table should not
								automatically be used to define cleanup levels that must be met for financial,
								real estate, insurance coverage or placement, or similar transactions or
								purposes. Exceedances of the values in this table do not necessarily mean the
								groundwater must be restored to those levels at all sites. The level of
								restoration depends on the remedy selected under WAC
								173-340-350 through
								173-340-390.
b
Arsenic.
Cleanup level based on
								background concentrations for state of Washington.
c
Benzene.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
d
Benzo(a)pyrene.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61), adjusted to a 1 x
								10-5 risk. If other carcinogenic PAHs are suspected
								of being present at the site, test for them and use this value as the total
								concentration that all carcinogenic PAHs must meet using the toxicity
								equivalency methodology in WAC
								173-340-708(8).
e
Cadmium.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.62).
f
Chromium (Total).
Cleanup level based
								on concentration derived using Equation 720-1 for hexavalent chromium. This is
								a total value for chromium III and chromium VI. If just chromium III is present
								at the site, a cleanup level of 100 ug/l may be used (based on WAC
								246-290-310 and
								40 C.F.R.
								141.62).
g
DDT (dichlorodiphenyltrichloroethane).
Cleanup levels based on concentration derived using Equation 720-2.
h
1,2 Dichloroethane (ethylene dichloride or
								EDC).
Cleanup level based on applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
i
Ethylbenzene.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
j
Ethylene dibromide (1,2 dibromoethane or
								EDB).
Cleanup level based on concentration derived using Equation 720-2,
								adjusted for the practical quantitation limit.
k
Gross Alpha Particle Activity, excluding
								uranium.
Cleanup level based on applicable state and federal law (WAC
								246-290-310 and    40 C.F.R. 141.15
								).
l
Gross Beta Particle Activity, including gamma
								activity.
Cleanup level based on applicable state and federal law (WAC
								246-290-310 and 40 C.F.R. 141.15
								).
m
Lead.
Cleanup level based on
								applicable state and federal law (40 C.F.R.
								141.80).
n
Lindane.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
o
Methylene chloride (dichloromethane).
Cleanup level based on applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
p
Mercury.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.62).
q
Methyl tertiary-butyl ether (MTBE).
Cleanup level based on federal drinking water advisory level (EPA-822-F-97-009,
								December 1997).
r
Naphthalenes.
Cleanup level based on
								concentration derived using Equation 720-1. This is a total value for
								naphthalene, 1-methyl naphthalene and 2-methyl naphthalene.
s
PCB mixtures.
Cleanup level based on
								concentration derived using Equation 720-2, adjusted for the practical
								quantitation limit. This cleanup level is a total value for all PCBs.
t
Radium 226 and 228.
Cleanup level
								based on applicable state and federal law (WAC
								246-290-310 and 40 C.F.R. 141.15
								).
u
Radium 226.
Cleanup level based on
								applicable state law (WAC
								246-290-310).
v
Tetrachloroethylene.
Cleanup level
								based on applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
w
Toluene.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
x
Total Petroleum Hydrocarbons (TPH).
TPH cleanup values have been provided for the most common petroleum products
								encountered at contaminated sites. Where there is a mixture of products or the
								product composition is unknown, samples must be tested using both the NWTPH-Gx
								and NWTPH-Dx methods and the lowest applicable TPH cleanup level must be
								met.
Gasoline range organics
means organic
								compounds measured using method NWTPH-Gx. Examples are aviation and automotive
								gasoline. The cleanup level is based on protection of groundwater for
								noncarcinogenic effects during drinking water use. Two cleanup levels are
								provided. The higher value is based on the assumption that no benzene is
								present in the groundwater sample. If any detectable amount of benzene is
								present in the groundwater sample, then the lower TPH cleanup level must be
								used. No interpolation between these cleanup levels is allowed. The groundwater
								cleanup level for any carcinogenic components of the petroleum [such as
								benzene, EDB and EDC] and any noncarcinogenic components [such as ethylbenzene,
								toluene, xylenes and MTBE], if present at the site, must also be met. See Table
								830-1 for the minimum testing requirements for gasoline releases.
Diesel range organics
means organic
								compounds measured using NWTPH-Dx. Examples are diesel, kerosene, and #1 and #2
								heating oil. The cleanup level is based on protection from noncarcinogenic
								effects during drinking water use. The groundwater cleanup level for any
								carcinogenic components of the petroleum [such as benzene and PAHs] and any
								noncarcinogenic components [such as ethylbenzene, toluene, xylenes and
								naphthalenes], if present at the site, must also be met. See Table 830-1 for
								the minimum testing requirements for diesel releases.
Heavy oils
means organic compounds
								measured using NWTPH-Dx. Examples are #6 fuel oil, bunker C oil, hydraulic oil
								and waste oil. The cleanup level is based on protection from noncarcinogenic
								effects during drinking water use, assuming a product composition similar to
								diesel fuel. The groundwater cleanup level for any carcinogenic components of
								the petroleum [such as benzene, PAHs and PCBs] and any noncarcinogenic
								components [such as ethylbenzene, toluene, xylenes and naphthalenes], if
								present at the site, must also be met. See Table 830-1 for the minimum testing
								requirements for heavy oil releases.
Mineral oil
means non-PCB mineral oil,
								typically used as an insulator and coolant in electrical devices such as
								transformers and capacitors measured using NWTPH-Dx. The cleanup level is based
								on protection from noncarcinogenic effects during drinking water use. Sites
								using this cleanup level must analyze groundwater samples for PCBs and meet the
								PCB cleanup level in this table unless it can be demonstrated that: (1) The
								release originated from an electrical device manufactured after July 1, 1979;
								or (2) oil containing PCBs was never used in the equipment suspected as the
								source of the release; or (3) it can be documented that the oil released was
								recently tested and did not contain PCBs. Method B (or Method C, if applicable)
								must be used for releases of oils containing greater than 50 ppm PCBs. See
								Table 830-1 for the minimum testing requirements for mineral oil
								releases.
y
1,1,1 Trichloroethane.
Cleanup level
								based on applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
z
Trichloroethylene.
Cleanup level based
								on applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61).
aa
Vinyl chloride.
Cleanup level based on
								applicable state and federal law (WAC
								246-290-310 and
								40 C.F.R.
								141.61), adjusted to a 1 x
								10-5 risk.
bb
Xylenes.
Cleanup level based on xylene
								not exceeding the maximum allowed cleanup level in this table for total
								petroleum hydrocarbons and on prevention of adverse aesthetic characteristics.
								This is a total value for all xylenes.
Table 740-1 Method A Soil Cleanup Levels for
				  Unrestricted Land Uses.a
Hazardous Substance
CAS Number
Cleanup Level
Arsenic
7440-38-2
20 mg/kgb
Benzene
71-43-2
0.03 mg/kgc
Benzo(a)pyrene
50-32-8
0.1 mg/kgd
Cadmium
7440-43-9
2 mg/kge
Chromium
Chromium VI
18540-29-9
19 mg/kgf1
Chromium III
16065-83-1
2,000 mg/kgf2
DDT
50-29-3
3 mg/kgg
Ethylbenzene
100-41-4
6 mg/kgh
Ethylene dibromide (EDB)
106-93-4
0.005 mg/kgi
Lead
7439-92-1
250 mg/kgj
Lindane
58-89-9
0.01 mg/kgk
Methylene chloride
75-09-2
0.02 mg/kgl
Mercury (inorganic)
7439-97-6
2 mg/kgm
MTBE
1634-04-4
0.1 mg/kgn
Naphthalenes
91-20-3
5 mg/kgo
PAHs (carcinogenic)
See
								benzo(a)pyrened
PCB Mixtures
1 mg/kgp
Tetrachloroethylene
127-18-4
0.05 mg/kgq
Toluene
108-88-3
7 mg/kgr
Total Petroleum
								Hydrocarbonss
[Note: Must also test for and meet cleanup levels
								for other petroleum components--see footnotes!]
Gasoline Range Organics
Gasoline mixtures without benzene and the total of
								ethylbenzene, toluene and xylene are less than 1% of the gasoline mixture
100 mg/kg
All other gasoline mixtures
30 mg/kg
Diesel Range Organics
2,000 mg/kg
Heavy Oils
2,000 mg/kg
Mineral Oil
4,000 mg/kg
1,1,1 Trichloroethane
71-55-6
2 mg/kgt
Trichloroethylene
79-01-6
0.03 mg/kgu
Xylenes
1330-20-7
9 mg/kgv
Footnotes:
a
Caution on misusing this table.
This
								table has been developed for specific purposes. It is intended to provide
								conservative cleanup levels for sites undergoing routine cleanup actions or for
								sites with relatively few hazardous substances, and the site qualifies under
								WAC 173-340-7491 for an exclusion
								from conducting a simplified or site-specific terrestrial ecological
								evaluation, or it can be demonstrated using a terrestrial ecological evaluation
								under WAC
								173-340-7492 or
								173-340-7493 that the values in
								this table are ecologically protective for the site. This table may not be
								appropriate for defining cleanup levels at other sites. For these reasons, the
								values in this table should not automatically be used to define cleanup levels
								that must be met for financial, real estate, insurance coverage or placement,
								or similar transactions or purposes. Exceedances of the values in this table do
								not necessarily mean the soil must be restored to these levels at a site. The
								level of restoration depends on the remedy selected under WAC
								173-340-350 through
								173-340-390.
b
Arsenic.
Cleanup level based on direct
								contact using Equation 740-2 and protection of groundwater for drinking water
								use using the procedures in WAC
								173-340-747(4),
								adjusted for natural background for soil.
c
Benzene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures in WAC
								173-340-747(4) and
								(6).
d
Benzo(a)pyrene.
Cleanup level based on
								direct contact using Equation 740-2. If other carcinogenic PAHs are suspected
								of being present at the site, test for them and use this value as the total
								concentration that all carcinogenic PAHs must meet using the toxicity
								equivalency methodology in WAC
								173-340-708(8).
e
Cadmium.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit for soil.
f1
Chromium VI.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
f2
Chromium III.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								Chromium VI must also be tested for and the cleanup level met when present at a
								site.
g
DDT (dichlorodiphenyltrichloroethane).
Cleanup level based on direct contact using Equation 740-2.
h
Ethylbenzene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
i
Ethylene dibromide (1,2 dibromoethane or
								EDB).
Cleanup level based on protection of groundwater for drinking
								water use, using the procedures described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit for soil.
j
Lead.
Cleanup level based on
								preventing unacceptable blood lead levels.
k
Lindane.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit.
l
Methylene chloride (dichloromethane).
Cleanup level based on protection of groundwater for drinking water use, using
								the procedures described in WAC
								173-340-747(4).
m
Mercury.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
n
Methyl tertiary-butyl ether (MTBE).
Cleanup level based on protection of groundwater for drinking water use, using
								the procedures described in WAC
								173-340-747(4).
o
Naphthalenes.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								This is a total value for naphthalene, 1-methyl naphthalene and 2-methyl
								naphthalene.
p
PCB Mixtures.
Cleanup level based on
								applicable federal law  (40
								C.F.R. 761.61). This is a total value for
								all PCBs.
q
Tetrachloroethylene.
Cleanup level
								based on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
r
Toluene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
s
Total Petroleum Hydrocarbons (TPH).
TPH cleanup values have been provided for the most common petroleum products
								encountered at contaminated sites. Where there is a mixture of products or the
								product composition is unknown, samples must be tested using both the NWTPH-Gx
								and NWTPH-Dx methods and the lowest applicable TPH cleanup level must be
								met.
Gasoline range organics
means organic
								compounds measured using method NWTPH-Gx. Examples are aviation and automotive
								gasoline. The cleanup level is based on protection of groundwater for
								noncarcinogenic effects during drinking water use using the procedures
								described in WAC
								173-340-747(6).
								Two cleanup levels are provided. The lower value of 30 mg/kg can be used at any
								site. When using this lower value, the soil must also be tested for and meet
								the benzene soil cleanup level. The higher value of 100 mg/kg can only be used
								if the soil is tested and found to contain no benzene and the total of
								ethylbenzene, toluene and xylene are less than 1% of the gasoline mixture. No
								interpolation between these cleanup levels is allowed. In both cases, the soil
								cleanup level for any other carcinogenic components of the petroleum [such as
								EDB and EDC], if present at the site, must also be met. Also, in both cases,
								soil cleanup levels for any noncarcinogenic components [such as toluene,
								ethylbenzene, xylenes, naphthalene, and MTBE], also must be met if these
								substances are found to exceed groundwater cleanup levels at the site. See
								Table 830-1 for the minimum testing requirements for gasoline releases.
Diesel range organics
means organic
								compounds measured using method NWTPH-Dx. Examples are diesel, kerosene, and #1
								and #2 heating oil. The cleanup level is based on preventing the accumulation
								of free product on the groundwater, as described in WAC
								173-340-747(10).
								The soil cleanup level for any carcinogenic components of the petroleum [such
								as benzene and PAHs], if present at the site, must also be met. Soil cleanup
								levels for any noncarcinogenic components [such as toluene, ethylbenzene,
								xylenes and naphthalenes], also must be met if these substances are found to
								exceed the groundwater cleanup levels at the site. See Table 830-1 for the
								minimum testing requirements for diesel releases.
Heavy oils
means organic compounds
								measured using NWTPH-Dx. Examples are #6 fuel oil, bunker C oil, hydraulic oil
								and waste oil. The cleanup level is based on preventing the accumulation of
								free product on the groundwater, as described in WAC
								173-340-747(10) and assuming a product composition similar to diesel fuel. The soil cleanup
								level for any carcinogenic components of the petroleum [such as benzene, PAHs
								and PCBs], if present at the site, must also be met. Soil cleanup levels for
								any noncarcinogenic components [such as toluene, ethylbenzene, xylenes and
								naphthalenes], also must be met if found to exceed the groundwater cleanup
								levels at the site. See Table 830-1 for the minimum testing requirements for
								heavy oil releases.
Mineral oil
means non-PCB mineral oil,
								typically used as an insulator and coolant in electrical devices such as
								transformers and capacitors, measured using NWTPH-Dx. The cleanup level is
								based on preventing the accumulation of free product on the groundwater, as
								described in WAC
								173-340-747(10).
								Sites using this cleanup level must also analyze soil samples and meet the soil
								cleanup level for PCBs, unless it can be demonstrated that: (1) The release
								originated from an electrical device that was manufactured after July 1, 1979;
								or (2) oil containing PCBs was never used in the equipment suspected as the
								source of the release; or (3) it can be documented that the oil released was
								recently tested and did not contain PCBs. Method B must be used for releases of
								oils containing greater than 50 ppm PCBs. See Table 830-1 for the minimum
								testing requirements for mineral oil releases.
t
1,1,1 Trichloroethane.
Cleanup level
								based on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
u
Trichloroethylene.
Cleanup level based
								on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
v
Xylenes.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								This is a total value for all xylenes.
Table 745-1 Method A Soil Cleanup Levels for Industrial
				  Properties.a
Hazardous Substance
CAS Number
Cleanup Level
Arsenic
7440-38-2
20 mg/kgb
Benzene
71-43-2
0.03 mg/kgc
Benzo(a)pyrene
50-32-8
2 mg/kgd
Cadmium
7440-43-9
2 mg/kge
Chromium
Chromium VI
18540-29-9
19 mg/kgf1
Chromium III
16065-83-1
2,000 mg/kgf2
DDT
50-29-3
4 mg/kgg
Ethylbenzene
100-41-4
6 mg/kgh
Ethylene dibromide (EDB)
106-93-4
0.005 mg/kgi
Lead
7439-92-1
1,000 mg/kgj
Lindane
58-89-9
0.01 mg/kgk
Methylene chloride
75-09-2
0.02 mg/kgl
Mercury (inorganic)
7439-97-6
2 mg/kgm
MTBE
1634-04-4
0.1 mg/kgn
Naphthalene
91-20-3
5 mg/kgo
PAHs (carcinogenic)
See
								benzo(a)pyrened
PCB Mixtures
10 mg/kgp
Tetrachloroethylene
127-18-4
0.05 mg/kgq
Toluene
108-88-3
7 mg/kgr
Total Petroleum
								Hydrocarbonss
[Note: Must also test for and meet cleanup levels
								for other petroleum components--see footnotes!]
Gasoline Range Organics
Gasoline mixtures without benzene and the total of
								ethylbenzene, toluene and xylene are less than 1% of the gasoline
								mixture
100 mg/kg
All other gasoline mixtures
30 mg/kg
Diesel Range Organics
2,000 mg/kg
Heavy Oils
2,000 mg/kg
Mineral Oil
4,000 mg/kg
1,1,1 Trichloroethane
71-55-6
2 mg/kgt
Trichloroethylene
79-01-6
0.03 mg/kgu
Xylenes
1330-20-7
9 mg/kgv
Footnotes:
a
Caution on misusing this table.
This
								table has been developed for specific purposes. It is intended to provide
								conservative cleanup levels for sites undergoing routine cleanup actions or for
								industrial properties with relatively few hazardous substances, and the site
								qualifies under WAC
								173-340-7491 for an exclusion
								from conducting a simplified or site-specific terrestrial ecological
								evaluation, or it can be demonstrated using a terrestrial ecological evaluation
								under WAC
								173-340-7492 or
								173-340-7493 that the values in
								this table are ecologically protective for the site. This table may not be
								appropriate for defining cleanup levels at other sites. For these reasons, the
								values in this table should not automatically be used to define cleanup levels
								that must be met for financial, real estate, insurance coverage or placement,
								or similar transactions or purposes. Exceedances of the values in this table do
								not necessarily mean the soil must be restored to these levels at a site. The
								level of restoration depends on the remedy selected under WAC
								173-340-350 through
								173-340-390.
b
Arsenic.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures in WAC
								173-340-747(4),
								adjusted for natural background for soil.
c
Benzene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4) and
								(6).
d
Benzo(a)pyrene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								If other carcinogenic PAHs are suspected of being present at the site, test for
								them and use this value as the total concentration that all carcinogenic PAHs
								must meet using the toxicity equivalency methodology in WAC
								173-340-708(8).
e
Cadmium.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit for soil.
f1
Chromium VI.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
f2
Chromium III.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								Chromium VI must also be tested for and the cleanup level met when present at a
								site.
g
DDT (dichlorodiphenyltrichloroethane).
Cleanup level based on protection of groundwater for drinking water use, using
								the procedures described in WAC
								173-340-747(4).
h
Ethylbenzene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
i
Ethylene dibromide (1,2 dibromoethane or
								EDB).
Cleanup level based on protection of groundwater for drinking
								water use, using the procedures described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit for soil.
j
Lead.
Cleanup level based on direct
								contact.
k
Lindane.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4),
								adjusted for the practical quantitation limit.
l
Methylene chloride (dichloromethane).
Cleanup level based on protection of groundwater for drinking water use, using
								the procedures described in WAC
								173-340-747(4).
m
Mercury.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
n
Methyl tertiary-butyl ether (MTBE).
Cleanup level based on protection of groundwater for drinking water use, using
								the procedures described in WAC
								173-340-747(4).
o
Naphthalenes.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
								This is a total value for naphthalene, 1-methyl naphthalene and 2-methyl
								naphthalene.
p
PCB Mixtures.
Cleanup level based on
								applicable federal law  (40
								C.F.R. 761.61). This is a total value for
								all PCBs. This value may be used only if the PCB contaminated soils are capped
								and the cap maintained as required by
								40 C.F.R.
								761.61. If this condition cannot be met, the
								value in Table 740-1 must be used.
q
Tetrachloroethylene.
Cleanup level
								based on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
r
Toluene.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedure described
								in WAC 173-340-747(4).
s
Total Petroleum Hydrocarbons (TPH).
TPH cleanup values have been provided for the most common petroleum products
								encountered at contaminated sites. Where there is a mixture of products or the
								product composition is unknown, samples must be tested using both the NWTPH-Gx
								and NWTPH-Dx methods and the lowest applicable TPH cleanup level must be
								met.
Gasoline range organics
means organic
								compounds measured using method NWTPH-Gx. Examples are aviation and automotive
								gasoline. The cleanup level is based on protection of groundwater for
								noncarcinogenic effects during drinking water use using the procedures
								described in WAC
								173-340-747(6).
								Two cleanup levels are provided. The lower value of 30 mg/kg can be used at any
								site. When using this lower value, the soil must also be tested for and meet
								the benzene soil cleanup level. The higher value of 100 mg/kg can only be used
								if the soil is tested and found to contain no benzene and the total of
								ethylbenzene, toluene and xylene are less than 1% of the gasoline mixture. No
								interpolation between these cleanup levels is allowed. In both cases, the soil
								cleanup level for any other carcinogenic components of the petroleum [such as
								EDB and EDC], if present at the site, must also be met. Also, in both cases,
								soil cleanup levels for any noncarcinogenic components [such as toluene,
								ethylbenzene, xylenes, naphthalene, and MTBE], also must be met if these
								substances are found to exceed groundwater cleanup levels at the site. See
								Table 830-1 for the minimum testing requirements for gasoline releases.
Diesel range organics
means organic
								compounds measured using method NWTPH-Dx. Examples are diesel, kerosene, and #1
								and #2 heating oil. The cleanup level is based on preventing the accumulation
								of free product on the groundwater, as described in WAC
								173-340-747(10).
								The soil cleanup level for any carcinogenic components of the petroleum [such
								as benzene, and PAHs], if present at the site, must also be met. Soil cleanup
								levels for any noncarcinogenic components [such as toluene, ethylbenzene,
								xylenes and naphthalenes], also must be met if these substances are found to
								exceed the groundwater cleanup levels at the site. See Table 830-1 for the
								minimum testing requirements for diesel releases.
Heavy oils
means organic compounds
								measured using NWTPH-Dx. Examples are #6 fuel oil, bunker C oil, hydraulic oil
								and waste oil. The cleanup level is based on preventing the accumulation of
								free product on the groundwater, as described in WAC
								173-340-747(10) and assuming a product composition similar to diesel fuel. The soil cleanup
								level for any carcinogenic components of the petroleum [such as benzene, PAHs
								and PCBs], if present at the site, must also be met. Soil cleanup levels for
								any noncarcinogenic components [such as toluene, ethylbenzene, xylenes and
								naphthalenes], also must be met if found to exceed the groundwater cleanup
								levels at the site. See Table 830-1 for the minimum testing requirements for
								heavy oil releases.
Mineral oil
means non-PCB mineral oil,
								typically used as an insulator and coolant in electrical devices such as
								transformers and capacitors, measured using NWTPH-Dx. The cleanup level is
								based on preventing the accumulation of free product on the groundwater, as
								described in WAC
								173-340-747(10).
								Sites using this cleanup level must also analyze soil samples and meet the soil
								cleanup level for PCBs, unless it can be demonstrated that: (1) The release
								originated from an electrical device that was manufactured after July 1, 1979;
								or (2) oil containing PCBs was never used in the equipment suspected as the
								source of the release; or (3) it can be documented that the oil released was
								recently tested and did not contain PCBs. Method B or C must be used for
								releases of oils containing greater than 50 ppm PCBs. See Table 830-1 for the
								minimum testing requirements for mineral oil releases.
t
1,1,1 Trichloroethane.
Cleanup level
								based on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
u
Trichloroethylene.
Cleanup level based
								on protection of groundwater for drinking water use, using the procedures
								described in WAC
								173-340-747(4).
v
Xylenes.
Cleanup level based on
								protection of groundwater for drinking water use, using the procedure in WAC
								173-340-747(4).
								This is a total value for all xylenes.
Table 747-1 Soil Organic Carbon-Water Partitioning
				  Coefficient (Koc) Values: Nonionizing
				  Organics.
Hazardous Substance
Koc
								(ml/g)
ACENAPHTHENE
4,898
ALDRIN
48,685
ANTHRACENE
23,493
BENZ(a)ANTHRACENE
357,537
BENZENE
62
BENZO(a)PYRENE
968,774
BIS(2-CHLOROETHYL)ETHER
76
BIS(2-ETHYLHEXYL)PHTHALATE
111,123
BROMOFORM
126
BUTYL BENZYL PHTHALATE
13,746
CARBON TETRACHLORIDE
152
CHLORDANE
51,310
CHLOROBENZENE
224
CHLOROFORM
53
DDD
45,800
DDE
86,405
DDT
677,934
DIBENZO(a,h)ANTHRACENE
1,789,101
1,2-DICHLOROBENZENE (o)
379
1,4-DICHLOROBENZENE (p)
616
DICHLOROETHANE-1,1
53
DICHLOROETHANE-1,2
38
DICHLOROETHYLENE-1,1
65
trans-1,2 DICHLOROETHYLENE
38
DICHLOROPROPANE-1,2
47
DICHLOROPROPENE-1,3
27
DIELDRIN
25,546
DIETHYL PHTHALATE
82
DI-N-BUTYLPHTHALATE
1,567
EDB
66
ENDRIN
10,811
ENDOSULFAN
2,040
ETHYL BENZENE
204
FLUORANTHENE
49,096
FLUORENE
7,707
HEPTACHLOR
9,528
HEXACHLOROBENZENE
80,000
ALPHA-HCH (ALPHA-BHC)
1,762
-HCH (-BHC)
2,139
-HCH (LINDANE)
1,352
MTBE
11
METHOXYCHLOR
80,000
METHYL BROMIDE
9
METHYL CHLORIDE
6
METHYLENE CHLORIDE
10
NAPHTHALENE
1,191
NITROBENZENE
119
PCB-Arochlor 1016
107,285
PCB-Arochlor 1260
822,422
PENTACHLOROBENZENE
32,148
PYRENE
67,992
STYRENE
912
1,1,2,2,-TETRACHLOROETHANE
79
TETRACHLOROETHYLENE
265
TOLUENE
140
TOXAPHENE
95,816
1,2,4-TRICHLOROBENZENE
1,659
TRICHLOROETHANE -1,1,1
135
TRICHLOROETHANE-1,1,2
75
TRICHLOROETHYLENE
94
o-XYLENE
241
m-XYLENE
196
p-XYLENE
311
Sources:
Except as noted below, the source of the
								Koc values is the 1996
EPA Soil Screening
								Guidance: Technical Background Document
. The values obtained from this
								document represent the geometric mean of a survey of values published in the
								scientific literature. Sample populations ranged from 1-65. EDB value from
ATSDR Toxicological Profile
(TP 91/13). MTBE value from
USGS Final Draft Report on Fuel Oxygenates
(March 1996).
								PCB-Arochlor values from 1994
EPA Draft Soil Screening
								Guidance
.
Table 747-2
Predicted Soil Organic Carbon-Water Partitioning
				  Coefficient (Koc) as a Function of pH: Ionizing
				  Organics.
Hazardous Substance
Koc Value
								(ml/g)
pH = 4.9
pH = 6.8
pH = 8.0
Benzoic acid
5.5
0.6
0.5
2-Chlorophenol
398
388
286
2-4-Dichlorophenol
159
147
72
2-4-Dinitrophenol
0.03
0.01
0.01
Pentachlorophenol
9,055
592
410
2,3,4,5-Tetrachlorophenol
17,304
4,742
458
2,3,4,6-Tetrachlorophenol
4,454
280
105
2,4,5-Trichlorophenol
2,385
1,597
298
2,4,6-Trichlorophenol
1,040
381
131
Source:
1996
EPA Soil Screening Guidance: Technical
								Background Document
. The predicted Koc values
								in this table were derived using a relationship from thermodynamic equilibrium
								considerations to predict the total sorption of an ionizable organic compound
								from the partitioning of its ionized and neutral forms.
Table 747-3 Metals Distribution Coefficients
				  (Kd).
Hazardous Substance
Kd
								(L/kg)
Arsenic
29
Cadmium
6.7
Total Chromium
1,000
Chromium VI
19
Copper
22
Mercury
52
Nickel
65
Lead
10,000
Selenium
5
Zinc
62
Source:
Multiple sources compiled by the department of
								ecology.
Table 747-4 Petroleum EC Fraction Physical/Chemical
				  Values.
Fuel
Fraction
Equivalent
Carbon
Number1
Water
Solubility2
(mg/L)
Mol.
Wt.3
(g/mol)
Henry's
Constant4
(cc/cc)
GFW5
(mg/mol)
Density6
(mg/l)
Soil Organic
Carbon-Water
Partitioning
Coefficient
Koc7
								(L/kg)
ALIPHATICS
EC 5 - 6
5.5
36.0
81.0
33.0
81,000
670,000
800
EC > 6 - 8
7.0
5.4
100.0
50.0
100,000
700,000
3,800
EC > 8 - 10
9.0
0.43
130.0
80.0
130,000
730,000
30,200
EC > 10 - 12
11.0
0.034
160.0
120.0
160,000
750,000
234,000
EC > 12 - 16
14.0
7.6E-04
200.0
520.0
200,000
770,000
5.37E+06
EC > 16 - 21
19.0
1.3E-06
270.0
4,900
270,000
780,000
9.55E+09
EC > 21 - 34
28.0
1.5E-11
400.0
100,000
400,000
790,000
1.07E+10
AROMATICS
EC > 8 - 10
9.0
65.0
120.0
0.48
120,000
870,000
1,580
EC > 10 - 12
11.0
25.0
130.0
0.14
130,000
900,000
2,510
EC > 12 - 16
14.0
5.8
150.0
0.053
150,000
1,000,000
5,010
EC > 16 - 21
19.0
0.51
190.0
0.013
190,000
1,160,000
15,800
EC > 21 - 34
28.0
6.6E-03
240.0
6.7E-04
240,000
1,300,000
126,000
TPH COMPONENTS
Benzene
6.5
1,750
78.0
0.228
78,000
876,500
62.0
Toluene
7.6
526.0
92.0
0.272
92,000
866,900
140.0
Ethylbenzene
8.5
169.0
106.0
0.323
106,000
867,000
204.0
Total Xylenes8
								(average of 3)
8.67
171.0
106.0
0.279
106,000
875,170
233.0
n-Hexane9
6.0
9.5
86.0
74.0
86,000
659,370
3,410
MTBE10
50,000
88.0
0.018
88,000
744,000
10.9
Naphthalenes
11.69
31.0
128.0
0.0198
128,000
1,145,000
1,191
Sources:
1
Equivalent Carbon Number.
Gustafson,
								J.B. et al.,
Selection of Representative TPH Fractions Based on Fate
								and Transport Considerations. Total Petroleum Hydrocarbon Criteria Working
								Group Series
, Volume 3 (1997) [hereinafter
Criteria Working
								Group
].
2
Water Solubility.
For aliphatics and
								aromatics EC groups,
Criteria Working Group.
For TPH
								components except n-hexane and MTBE,
1996 EPA Soil Screening Guidance:
								Technical Background Document
.
3
Molecular Weight.
Criteria
								Working Group.
4
Henry's Constant.
For aliphatics and
								aromatics EC groups,
Criteria Working Group.
For TPH
								components except n-hexane and MTBE,
1996 EPA Soil Screening Guidance:
								Technical Background Document
.
5
Gram Formula Weight (GFW).
Based on
								1000 x Molecular Weight.
6
Density.
For aliphatics and aromatics
								EC groups, based on correlation between equivalent carbon number and data on
								densities of individual hazardous substances provided in
Criteria
								Working Group.
For TPH components except n-hexane and MTBE,
1996 EPA Soil Screening Guidance: Technical Background
								Document.
7
Soil Organic Carbon-Water Partitioning
								Coefficient.
For aliphatics and aromatics EC groups,
Criteria
								Working Group.
For TPH components except n-hexane and MTBE,
1996 EPA Soil Screening Guidance: Technical Background
								Document.
8
Total Xylenes.
Values for total
								xylenes are a weighted average of m, o and p xylene based on gasoline
								composition data from the
Criteria Working Group
(m = 51% of
								total xylene; o = 28% of total xylene; and p = 21% of total xylene).
9
n-Hexane.
For values other than
								density,
Criteria Working Group
. For the density value,
Hawley's Condensed Chemical Dictionary,
11th ed., revised by
								N. Irving Sax and Richard J. Lewis (1987).
10
MTBE.
USGS Final Report on
								Fuel Oxygenates
(March 1996).
Table 747-5
Residual Saturation Screening Levels for
				  TPH.
Fuel
Screening Level (mg/kg)
Weathered Gasoline
1,000
Middle Distillates
(e.g., Diesel No. 2 Fuel Oil)
2,000
Heavy Fuel Oils
(e.g., No. 6 Fuel Oil)
2,000
Mineral Oil
4,000
Unknown Composition or Type
1,000
Note:
The residual saturation screening levels for
								petroleum hydrocarbons specified in Table 747-5 are based on coarse sand and
								gravelly soils; however, they may be used for any soil type. Screening levels
								are based on the presumption that there are no preferential pathways for NAPL
								to flow downward to groundwater. If such pathways exist, more stringent
								residual saturation screening levels may need to be established.
Table 749-1 Simplified Terrestrial Ecological
				  Evaluation - Exposure Analysis Procedure under WAC
				  173-340-7492(2)(a)(ii).a
Estimate the area of contiguous (connected)
								undeveloped land on the site or within 500 feet of any area of the site to the
								nearest 1/2 acre (1/4 acre if the area is less than 0.5 acre). "Undeveloped
								land" means land that is not covered by existing buildings, roads, paved areas
								or other barriers that will prevent wildlife from feeding on plants,
								earthworms, insects or other food in or on the soil.
1) From the table below, find the number of points
								corresponding to the area and enter this number in the box to the right.
Area (acres)
Points
0.25 or less
4
0.5
5
1.0
6
1.5
7
2.0
8
2.5
9
3.0
10
3.5
11
4.0 or more
12
2) Is this an industrial or commercial
								property?
See WAC
								173-340-7490(3)(c).
								If yes, enter a score of 3 in the box to the right. If no, enter a score of
								1.
3) Enter a score in the box to the right for the
								habitat quality of the site, using the rating system shown
								belowb. (High = 1, Intermediate = 2, Low = 3)
4) Is the undeveloped land likely to attract
								wildlife? If yes, enter a score of 1 in the box to the right. If no, enter a
								score of 2. See footnote c.
5) Are there any of the following soil contaminants
								present:
Chlorinated dibenzo-p-dioxins/dibenzofurans, PCB
								mixtures, DDT, DDE, DDD, aldrin, chlordane, dieldrin, endosulfan, endrin,
								heptachlor, benzene hexachloride, toxaphene, hexachlorobenzene,
								pentachlorophenol, pentachlorobenzene? If yes, enter a score of 1 in the box to
								the right. If no, enter a score of 4.
6) Add the numbers in the boxes on lines 2 through
								5 and enter this number in the box to the right. If this number is larger than
								the number in the box on line 1, the simplified terrestrial ecological
								evaluation may be ended under WAC
								173-340-7492(2)(a)(ii).
Footnotes:
a
It is expected that this habitat evaluation will be
								undertaken by an experienced field biologist. If this is not the case, enter a
								conservative score (1) for questions 3 and 4.
b
Habitat rating system. Rate the quality of the
								habitat as high, intermediate or low based on your professional judgment as a
								field biologist. The following are suggested factors to consider in making this
								evaluation:
Low: Early successional vegetative stands;
								vegetation predominantly noxious, nonnative, exotic plant species or weeds.
								Areas severely disturbed by human activity, including intensively cultivated
								croplands. Areas isolated from other habitat used by wildlife.
High: Area is ecologically significant for one or
								more of the following reasons: Late-successional native plant communities
								present; relatively high species diversity; used by an uncommon or rare
								species; priority habitat (as defined by the Washington department of fish and
								wildlife); part of a larger area of habitat where size or fragmentation may be
								important for the retention of some species.
Intermediate: Area does not rate as either high or
								low.
c
Indicate "yes" if the area attracts wildlife or is
								likely to do so. Examples: Birds frequently visit the area to feed; evidence of
								high use by mammals (tracks, scat, etc.); habitat "island" in an industrial
								area; unusual features of an area that make it important for feeding animals;
								heavy use during seasonal migrations.
Table 749-2 Priority Contaminants of Ecological Concern
				  for Sites that Qualify for the Simplified Terrestrial Ecological Evaluation
				  Procedure.a
Priority contaminant
Soil concentration (mg/kg)
Unrestricted
land useb
Industrial or
commercial site
METALSC
Antimony
See note d
See note d
Arsenic III
20 mg/kg
20 mg/kg
Arsenic V
95 mg/kg
260 mg/kg
Barium
1,250 mg/kg
1,320 mg/kg
Beryllium
25 mg/kg
See note d
Cadmium
25 mg/kg
36 mg/kg
Chromium (total)
42 mg/kg
135 mg/kg
Cobalt
See note d
See note d
Copper
100 mg/kg
550 mg/kg
Lead
220 mg/kg
220 mg/kg
Magnesium
See note d
See note d
Manganese
See note d
23,500 mg/kg
Mercury, inorganic
9 mg/kg
9 mg/kg
Mercury, organic
0.7 mg/kg
0.7 mg/kg
Molybdenum
See note d
71 mg/kg
Nickel
100 mg/kg
1,850 mg/kg
Selenium
0.8 mg/kg
0.8 mg/kg
Silver
See note d
See note d
Tin
275 mg/kg
See note d
Vanadium
26 mg/kg
See note d
Zinc
270 mg/kg
570 mg/kg
PESTICIDES
Aldicarb/aldicarb sulfone (total)
See note d
See note d
Aldrin
0.17 mg/kg
0.17 mg/kg
Benzene hexachloride (including lindane)
10 mg/kg
10 mg/kg
Carbofuran
See note d
See note d
Chlordane
1 mg/kg
7 mg/kg
Chlorpyrifos/chlorpyrifos-methyl (total)
See note d
See note d
DDT/DDD/DDE (total)
1 mg/kg
1 mg/kg
Dieldrin
0.17 mg/kg
0.17 mg/kg
Endosulfan
See note d
See note d
Endrin
0.4 mg/kg
0.4 mg/kg
Heptachlor/heptachlor epoxide (total)
0.6 mg/kg
0.6 mg/kg
Hexachlorobenzene
31 mg/kg
31 mg/kg
Parathion/methyl parathion (total)
See note d
See note d
Pentachlorophenol
11 mg/kg
11 mg/kg
Toxaphene
See note d
See note d
OTHER CHLORINATED ORGANICS
Chlorinated dibenzofurans (total)
3E-06 mg/kg
3E-06 mg/kg
Chlorinated dibenzo-p-dioxins (total)
5E-06 mg/kg
5E-06 mg/kg
Hexachlorophene
See note d
See note d
PCB mixtures (total)
2 mg/kg
2 mg/kg
Pentachlorobenzene
168 mg/kg
See note d
OTHER NONCHLORINATED ORGANICS
Acenaphthene
See note d
See note d
Benzo(a)pyrene
30 mg/kg
300 mg/kg
Bis (2-ethylhexyl) phthalate
See note d
See note d
Di-n-butyl phthalate
200 mg/kg
See note d
PETROLEUM
Gasoline Range Organics
200 mg/kg
12,000 mg/kg except that the concentration shall
								not exceed residual saturation at the soil surface.
Diesel Range Organics
460 mg/kg
15,000 mg/kg except that the concentration shall
								not exceed residual saturation at the soil surface.
Footnotes:
a
Caution on misusing these chemical concentration
								numbers. These values have been developed for use at sites where a
								site-specific terrestrial ecological evaluation is not required. They are not
								intended to be protective of terrestrial ecological receptors at every site.
								Exceedances of the values in this table do not necessarily trigger requirements
								for cleanup action under this chapter. The table is not intended for purposes
								such as evaluating sludges or wastes.
This list does not imply that sampling must be
								conducted for each of these chemicals at every site. Sampling should be
								conducted for those chemicals that might be present based on available
								information, such as current and past uses of chemicals at the site.
b
Applies to any site that does not meet the
								definition of industrial or commercial.
c
For arsenic, use the valence state most likely to
								be appropriate for site conditions, unless laboratory information is available.
								Where soil conditions alternate between saturated, anaerobic and unsaturated,
								aerobic states, resulting in the alternating presence of arsenic III and
								arsenic V, the arsenic III concentrations shall apply.
d
Safe concentration has not yet been established.
								See WAC 173-340-7492(2)(c).
Table 749-3
Ecological Indicator Soil Concentrations
								(mg/kg) for Protection of Terrestrial Plants and
								Animalsa.
For chemicals where a value is not
								provided, see footnote b.
Note:
These values represent soil
								concentrations that are expected to be protective at any MTCA site and are
								provided for use in eliminating hazardous substances from further consideration
								under WAC
								173-340-7493(2)(a)(i).
								Where these values are exceeded, various options are provided for demonstrating
								that the hazardous substance does not pose a threat to ecological receptors at
								a site, or for developing site-specific remedial standards for eliminating
								threats to ecological receptors. See WAC
								173-340-7493(1)(b)(i),
								173-340-7493(2)(a)(ii) and
								173-340-7493(3).
Hazardous
								Substanceb
Plantsc
Soil
								biotad
Wildlifee
METALSf:
Aluminum (soluble salts)
50
Antimony
5
Arsenic III
7
Arsenic V
10
60
132
Barium
500
102
Beryllium
10
Boron
0.5
Bromine
10
Cadmium
4
20
14
Chromium (total)
42g
42g
67
Cobalt
20
Copper
100
50
217
Fluorine
200
Iodine
4
Lead
50
500
118
Lithium
35g
Manganese
1,100g
1,500
Mercury, inorganic
0.3
0.1
5.5
Mercury, organic
0.4
Molybdenum
2
7
Nickel
30
200
980
Selenium
1
70
0.3
Silver
2
Technetium
0.2
Thallium
1
Tin
50
Uranium
5
Vanadium
2
Zinc
86g
200
360
PESTICIDES:
Aldrin
0.1
Benzene hexachloride (including lindane)
6
Chlordane
1
2.7
DDT/DDD/DDE (total)
0.75
Dieldrin
0.07
Endrin
0.2
Hexachlorobenzene
17
Heptachlor/heptachlor epoxide (total)
0.4
Pentachlorophenol
3
6
4.5
OTHER CHLORINATED ORGANICS:
1,2,3,4-Tetrachlorobenzene
10
1,2,3-Trichlorobenzene
20
1,2,4-Trichlorobenzene
20
1,2-Dichloropropane
700
1,4-Dichlorobenzene
20
2,3,4,5-Tetrachlorophenol
20
2,3,5,6-Tetrachloroaniline
20
20
2,4,5-Trichloroaniline
20
20
2,4,5-Trichlorophenol
4
9
2,4,6-Trichlorophenol
10
2,4-Dichloroaniline
100
3,4-Dichloroaniline
20
3,4-Dichlorophenol
20
20
3-Chloroaniline
20
30
3-Chlorophenol
7
10
Chlorinated dibenzofurans (total)
2E-06
Chloroacetamide
2
Chlorobenzene
40
Chlorinated dibenzo-p-dioxins (total)
2E-06
Hexachlorocyclopentadiene
10
PCB mixtures (total)
40
0.65
Pentachloroaniline
100
Pentachlorobenzene
20
OTHER NONCHLORINATED ORGANICS:
2,4-Dinitrophenol
20
4-Nitrophenol
7
Acenaphthene
20
Benzo(a)pyrene
12
Biphenyl
60
Diethylphthalate
100
Dimethylphthalate
200
Di-n-butyl phthalate
200
Fluorene
30
Furan
600
Nitrobenzene
40
N-nitrosodiphenylamine
20
Phenol
70
30
Styrene
300
Toluene
200
PETROLEUM:
Gasoline Range Organics
100
5,000 mg/kg except that the concentration shall not
								exceed residual saturation at the soil surface.
Diesel Range Organics
200
6,000 mg/kg except that the concentration shall not
								exceed residual saturation at the soil surface.
Footnotes:
a
Caution on misusing ecological indicator
								concentrations. Exceedances of the values in this table do not necessarily
								trigger requirements for cleanup action under this chapter. Natural background
								concentrations may be substituted for ecological indicator concentrations
								provided in this table. The table is not intended for purposes such as
								evaluating sludges or wastes.
This list does not imply that sampling must be
								conducted for each of these chemicals at every site. Sampling should be
								conducted for those chemicals that might be present based on available
								information, such as current and past uses of chemicals at the site.
b
For hazardous substances where a value is not
								provided, plant and soil biota indicator concentrations shall be based on a
								literature survey conducted in accordance with WAC
								173-340-7493(4) and calculated using methods described in the publications listed below in
								footnotes c and d. Methods to be used for developing wildlife indicator
								concentrations are described in Tables 749-4 and 749-5.
c
Based on benchmarks published in
Toxicological Benchmarks for Screening Potential Contaminants of
								Concern for Effects on Terrestrial Plants: 1997 Revision
, Oak Ridge
								National Laboratory, 1997.
d
Based on benchmarks published in
Toxicological Benchmarks for Potential Contaminants of Concern for
								Effects on Soil and Litter Invertebrates and Heterotrophic Process
,
								Oak Ridge National Laboratory, 1997.
e
Calculated using the exposure model provided in
								Table 749-4 and chemical-specific values provided in Table 749-5. Where both
								avian and mammalian values are available, the wildlife value is the lower of
								the two.
f
For arsenic, use the valence state most likely to
								be appropriate for site conditions, unless laboratory information is available.
								Where soil conditions alternate between saturated, anaerobic and unsaturated,
								aerobic states, resulting in the alternating presence of arsenic III and
								arsenic V, the arsenic III concentrations shall apply.
g
Benchmark replaced by Washington state natural
								background concentration.
Table 749-4 Wildlife Exposure Model for Site-specific
				  Evaluations.a
Plant
KPlant
Plant uptake coefficient (dry weight basis)
Units: mg/kg plant/mg/kg soil
Value: chemical-specific (see Table 749-5)
Soil biota
Surrogate receptor: Earthworm
BAFWorm
Earthworm bioaccumulation factor (dry weight
								basis)
Units: mg/kg worm/mg/kg soil
Value: chemical-specific (see Table 749-5)
Mammalian predator
Surrogate receptor: Shrew
								(
Sorex
)
PSB (shrew)
Proportion of contaminated food (earthworms) in
								shrew diet
Units: unitless
Value: 0.50
FIRShrew, DW
Food ingestion rate (dry weight basis)
Units: kg dry food/kg body weight - day
Value: 0.45
SIRShrew, DW
Soil ingestion rate (dry weight basis)
Units: kg dry soil/kg body weight - day
Value: 0.0045
RGAFSoil, shrew
Gut absorption factor for a hazardous substance in
								soil expressed relative to the gut absorption factor for the hazardous
								substance in food.
Units: unitless
Value: chemical-specific (see Table 749-5)
TShrew
Toxicity reference value for shrew
Units: mg/kg - day
Value: chemical-specific (see Table 749-5)
Home range
0.1 Acres
Avian predator
Surrogate receptor: American robin (
Turdus
								migratorius
)
PSB (Robin)
Proportion of contaminated food (soil biota) in
								robin diet
Unit: unitless
Value: 0.52
FIRRobin, DW
Food ingestion rate (dry weight basis)
Units: kg dry food/kg body weight - day
Value: 0.207
SIRRobin, DW
Soil ingestion rate (dry weight basis)
Units: kg dry soil/kg body weight - day
Value: 0.0215
RGAFSoil, robin
Gut absorption factor for a hazardous substance in
								soil expressed relative to the gut absorption factor for the hazardous
								substance in food.
Units: unitless
Value: chemical-specific (see Table 749-5)
TRobin
Toxicity reference value for robin
Units: mg/kg - day
Value: chemical-specific (see Table 749-5)
Home range
0.6 Acres
Mammalian herbivore
Surrogate receptor: Vole
								(
Microtus
)
PPlant, vole
Proportion of contaminated food (plants) in vole
								diet
Units: unitless
Value: 1.0
FIRVole, DW
Food ingestion rate (dry weight basis)
Units: kg dry food/kg body weight - day
Value: 0.315
SIRVole, DW
Soil ingestion rate (dry weight basis)
Units: kg dry soil/kg body weight - day
Value: 0.0079
RGAFSoil, vole
Gut absorption factor for a hazardous substance in
								soil expressed relative to the gut absorption factor for the hazardous
								substance in food.
Units: unitless
Value: chemical-specific (see Table 749-5)
TVole
Toxicity reference value for vole
Units: mg/kg - day
Value: chemical-specific (see Table 749-5)
Home range
0.08 Acres
Soil concentrations for wildlife
								protectionb
(1) Mammalian predator:
SCMP =
								(TShrew)/[(FIRShrew, DW x
								PSB (shrew) x BAFWorm) +
								(SIRShrew, DW x RGAFSoil,
								shrew)]
(2) Avian predator:
SCAP =
								(TRobin)/[(FIRRobin, DW x
								PSB (Robin) x BAFWorm) +
								(SIRRobin, DW x RGAFSoil,
								robin)]
(3) Mammalian herbivore:
SCMH =
								(TVole)/[(FIRVole, DW x
								PPlant, vole x KPlant) +
								(SIRVole, DW x RGAFSoil,
								vole)]
Footnotes:
a
Substitutions for default receptors may be made as
								provided for in WAC
								173-340-7493(7).
								If a substitute species is used, the values for food and soil ingestion rates,
								and proportion of contaminated food in the diet, may be modified to reasonable
								maximum exposure estimates for the substitute species based on a literature
								search conducted in accordance with WAC
								173-340-7493(4).
Additional species may be added on a site-specific
								basis as provided in WAC
								173-340-7493(2)(a).
The department shall consider proposals for
								modifications to default values provided in this table based on new scientific
								information in accordance with WAC
								173-340-702(14).
b
Use the lowest of the three concentrations
								calculated as the wildlife value.
Table 749-5 Default Values for Selected Hazardous
				  Substances for use with the Wildlife Exposure Model in Table
				  749-4.a
Toxicity reference value (mg/kg -
								d)
Hazardous Substance
BAFWorm
KPlant
Shrew
Vole
Robin
METALS:
Arsenic III
1.16
0.06
1.89
1.15
Arsenic V
1.16
0.06
35
35
22
Barium
0.36
43.5
33.3
Cadmium
4.6
0.14
15
15
20
Chromium
0.49
35.2
29.6
5
Copper
0.88
0.020
44
33.6
61.7
Lead
0.69
0.0047
20
20
11.3
Manganese
0.29
624
477
Mercury, inorganic
1.32
0.0854
2.86
2.18
0.9
Mercury, organic
1.32
0.352
0.27
0.064
Molybdenum
0.48
1.01
3.09
2.36
35.3
Nickel
0.78
0.047
175.8
134.4
107
Selenium
10.5
0.0065
0.725
0.55
1
Zinc
3.19
0.095
703.3
537.4
131
PESTICIDES:
Aldrine
4.77
0.007b
2.198
1.68
0.06
Benzene hexachloride (including lindane)
10.1
7
Chlordane
17.8
0.011b
10.9
8.36
10.7
DDT/DDD/DDE
10.6
0.004b
8.79
6.72
0.87
Dieldrin
28.8
0.029b
0.44
0.34
4.37
Endrin
3.6
0.038b
1.094
0.836
0.1
Heptachlor/heptachlor epoxide
10.9
0.027b
2.857
2.18
0.48
Hexachlorobenzene
1.08
2.4
Pentachlorophenol
5.18
0.043b
5.275
4.03
OTHER CHLORINATED ORGANICS:
Chlorinated dibenzofurans
48
1.0E-05
Chlorinated dibenzo-p-dioxins
48
0.005b
2.2E-05
1.7E-05
1.4E-04
PCB mixtures
4.58
0.087b
0.668
0.51
1.8
OTHER NONCHLORINATED ORGANICS:
Benzo(a)pyrene
0.43
0.011
1.19
0.91
Footnotes:
a
For hazardous substances not shown in this table,
								use the following default values. Alternatively, use values established from a
								literature survey conducted in accordance with WAC
								173-340-7493(4) and approved by the department.
KPlant:
Metals (including metalloid elements): 1.01
Organic chemicals: KPlant =
								10(1.588-(0.578log
								  Kow)),
where log Kow is the
								logarithm of the octanol-water partition coefficient.
BAFWorm:
Metals (including metalloid elements): 4.6
Nonchlorinated organic chemicals:
log Kow < 5: 0.7
log Kow > 5: 0.9
Chlorinated organic chemicals:
log Kow < 5: 4.7
log Kow > 5: 11.8
RGAFSoil
(all receptors): 1.0
Toxicity reference values (all receptors): Values
								established from a literature survey conducted in accordance with WAC
								173-340-7493(4).
Site-specific values may be substituted for default
								values, as described below:
KPlant
Value from a literature survey conducted in
								accordance with WAC
								173-340-7493(4) or from empirical studies at the site.
BAFWorm
Value from a literature survey conducted in
								accordance with WAC
								173-340-7493(4) or from empirical studies at the site.
RGAFSoil
(all receptors): Value established from a
								literature survey conducted in accordance with WAC
								173-340-7493(4).
Toxicity reference values (all receptors): Default
								toxicity reference values provided in this table may be replaced by a value
								established from a literature survey conducted in accordance with WAC
								173-340-7493(4).
b
Calculated from log Kow
								using formula in footnote a.
Table 830-1
Required Testing for Petroleum Releases.
Gasoline Range Organics (GRO)
								(1)
Diesel Range Organics (DRO) (2)
Heavy Oils (DRO) (3)
Mineral Oils (4)
Waste Oils and Unknown Oils (5)
Volatile Petroleum Compounds
Benzene
X 
								(6)
X 
								(7)
X 
								(8)
Toluene
X 
								(6)
X 
								(7)
X 
								(8)
Ethyl benzene
X 
								(6)
X 
								(7)
X 
								(8)
Xylenes
X 
								(6)
X 
								(7)
X 
								(8)
n-Hexane
X 
								(9)
Fuel Additives and Blending
								Compounds
Dibromoethane, 1-2 (EDB); and Dichloroethane, 1-2
								(EDC)
X 
								(10)
X 
								(8)
Methyl tertiary-butyl ether (MTBE)
X 
								(11)
X 
								(8)
Total lead other additives
X 
								(12)
X 
								(8)
Other Petroleum Components
Carcinogenic PAHs
X 
								(13)
X 
								(13)
X 
								(8)
Naphthalenes
X 
								(14)
X 
								(14)
X 
								(14)
X 
								(14)
Other Compounds
Polychlorinated Biphenyls (PCBs)
X 
								(15)
X 
								(15)
X 
								(8)
Halogenated Volatile Organic Compounds
								(VOCs)
X 
								(8)
Other
X 
								(16)
X 
								(16)
X 
								(16)
X 
								(16)
X 
								(16)
Total Petroleum Hydrocarbons
								Methods
TPH Analytical Method for Total TPH (Method A
								Cleanup Levels) (17)
NWTPH-Gx
NWTPH-Dx
NWTPH-Dx
NWTPH-Dx
NWTPH-Gx & NWTPH-Dx
TPH Analytical Methods for TPH fractions (Methods B
								or C) (17)
VPH
EPH
EPH
EPH
VPH and EPH
Use of Table 830-1:
An "X" in the box means that
				  the testing requirement applies to groundwater and soil if a release is known
				  or suspected to have occurred to that medium, unless otherwise specified in the
				  footnotes. A box with no "X" indicates (except in the last two rows) that, for
				  the type of petroleum product release indicated in the top row, analyses for
				  the hazardous substance(s) named in the far-left column corresponding to the
				  empty box are not typically required as part of the testing for petroleum
				  releases. However, such analyses may be required based on other site-specific
				  information. Note that testing for Total Petroleum Hydrocarbons (TPH) is
				  required for every type of petroleum release, as indicated in the bottom two
				  rows of the table. The testing method for TPH depends on the type of petroleum
				  product released and whether Method A or Method B or C is being used to
				  determine TPH cleanup levels. See WAC
				  173-340-830 for analytical
				  procedures.
The footnotes to this table are important for understanding
				  the specific analytical requirements for petroleum releases.
Footnotes:
(1) The following petroleum products are common examples of
				  GRO: automotive and aviation gasolines, mineral spirits, stoddard solvents, and
				  naphtha. To be in this range, 90 percent of the petroleum components need to be
				  quantifiable using the NWTPH-Gx; if NWTPH-HCID results are used for this
				  determination, then 90 percent of the "area under the TPH curve" must be
				  quantifiable using NWTPH-Gx. Products such as jet fuel, diesel No. 1, kerosene,
				  and heating oil may require analysis as both GRO and DRO depending on the range
				  of petroleum components present (range can be measured by NWTPH-HCID). (See
				  footnote 17 on analytical methods.)
(2) The following petroleum products are common examples of
				  DRO: Diesel No. 2, fuel oil No. 2, light oil (including some bunker oils). To
				  be in this range, 90 percent of the petroleum components need to be
				  quantifiable using the NWTPH-Dx quantified against a diesel standard. Products
				  such as jet fuel, diesel No. 1, kerosene, and heating oil may require analysis
				  as both GRO and DRO depending on the range of petroleum components present as
				  measured in NWTPH-HCID.
(3) The following petroleum products are common examples of
				  the heavy oil group: Motor oils, lube oils, hydraulic fluids, etc. Heavier oils
				  may require the addition of an appropriate oil range standard for
				  quantification.
(4) Mineral oil means non-PCB mineral oil, typically used as
				  an insulator and coolant in electrical devices such as transformers and
				  capacitors.
(5) The waste oil category applies to waste oil, oily wastes,
				  and unknown petroleum products and mixtures of petroleum and nonpetroleum
				  substances. Analysis of other chemical components (such as solvents) than those
				  listed may be required based on site-specific information. Mixtures of
				  identifiable petroleum products (such as gasoline and diesel, or diesel and
				  motor oil) may be analyzed based on the presence of the individual products,
				  and need not be treated as waste and unknown oils.
(6) When using Method A, testing soil for benzene is
				  required. Furthermore, testing groundwater for BTEX is necessary when a
				  petroleum release to groundwater is known or suspected. If the groundwater is
				  tested and toluene, ethyl benzene or xylene is in the groundwater above its
				  respective Method A cleanup level, the soil must also be tested for that
				  chemical. When using Method B or C, testing the soil for BTEX is required and
				  testing for BTEX in groundwater is required when a release to groundwater is
				  known or suspected.
(7)(a) For DRO releases from other than home heating oil
				  systems, follow the instructions for GRO releases in Footnote (6). (b) For DRO
				  releases from typical home heating oil systems (systems of 1,100 gallons or
				  less storing heating oil for residential consumptive use on the premises where
				  stored), testing for BTEX is not usually required for either groundwater or
				  soil. Testing of the groundwater is also not usually required for these
				  systems; however, if the groundwater is tested and benzene is found in the
				  groundwater, the soil must be tested for benzene.
(8) Testing is required in a sufficient number of samples to
				  determine whether this chemical is present at concentrations of concern. If the
				  chemical is found to be at levels below the applicable cleanup level, then no
				  further analysis is required.
(9) Testing for n-hexane is required when VPH analysis is
				  performed for Method B or C. In this case, the concentration of n-hexane should
				  be deleted from its respective fraction to avoid double-counting its
				  concentration. n-Hexane's contribution to overall toxicity is then evaluated
				  using its own reference dose.
(10) Volatile fuel additives (such as dibromoethane, 1 - 2
				  (EDB) (CAS# 106-93-4) and dichloroethane, 1 - 2 (EDC) (CAS# 107-06-2)) must be
				  part of a volatile organics analysis (VOA) of GRO contaminated groundwater. If
				  any is found in groundwater, then the contaminated soil must also be tested for
				  these chemicals.
(11) Methyl tertiary-butyl ether (MTBE) (CAS# 1634-04-4) must
				  be analyzed in GRO contaminated groundwater. If any is found in groundwater,
				  then the contaminated soil must also be tested for MTBE.
(12)(a) For automotive gasoline where the release occurred
				  prior to 1996 (when "leaded gasoline" was used), testing for lead is required
				  unless it can be demonstrated that lead was not part of the release. If this
				  demonstration cannot be made, testing is required in a sufficient number of
				  samples to determine whether lead is present at concentrations of concern.
				  Other additives and blending compounds of potential environmental significance
				  may need to be considered for testing, including: tertiary-butyl alcohol (TBA);
				  tertiary-amyl methyl ether (TAME); ethyl tertiary-butyl ether (ETBE); ethanol;
				  and methanol. Contact the department for additional testing recommendations
				  regarding these and other additives and blending compounds. (b) For aviation
				  gasoline, racing fuels and similar products, testing is required for likely
				  fuel additives (especially lead) and likely blending compounds, no matter when
				  the release occurred.
(13) Testing for carcinogenic PAHs is required for DRO and
				  heavy oils, except for the following products for which adequate information
				  exists to indicate their absence: Diesel No. 1 and 2, home heating oil,
				  kerosene, jet fuels, and electrical insulating mineral oils. The carcinogenic
				  PAHs include benzo(a)pyrene, chrysene, dibenzo(a,h)anthracene,
				  indeno(1,2,3-cd)pyrene, benzo(k)fluoranthene, benzo(a)anthracene, and
				  benzo(b)fluoranthene.
(14)(a) Except as noted in (b) and (c), testing for the
				  noncarcinogenic PAHs, including the "naphthalenes" (naphthalene,
				  1-methyl-naphthalene, and 2-methyl-naphthalene) is not required when using
				  Method A cleanup levels, because they are included in the TPH cleanup level.
				  (b) Testing of soil for naphthalenes is required under Methods B and C when the
				  inhalation exposure pathway is evaluated. (c) If naphthalenes are found in
				  groundwater, then the soil must also be tested for naphthalenes.
(15) Testing for PCBs is required unless it can be
				  demonstrated that: (1) The release originated from an electrical device
				  manufactured for use in the United States after July 1, 1979; (2) oil
				  containing PCBs was never used in the equipment suspected as the source of the
				  release (examples of equipment where PCBs are likely to be found include
				  transformers, electric motors, hydraulic systems, heat transfer systems,
				  electromagnets, compressors, capacitors, switches and miscellaneous other
				  electrical devices); or, (3) the oil released was recently tested and did not
				  contain PCBs.
(16) Testing for other possible chemical contaminants may be
				  required based on site-specific information.
(17) The analytical methods NWTPH-Gx, NWTPH-Dx, NWTPH-HCID,
				  VPH, and EPH are methods published by the department of ecology and available
				  on the department's internet web site:
http://www.ecy.wa.gov/programs/tcp/cleanup.html
.
Statutory Authority:
					 RCW
					 70.105D.030(2). 07-21-065
					 (Order 06-10), § 173-340-900, filed 10/12/07, effective 11/12/07.
					 Statutory Authority:
					 Chapter
					 70.105D RCW. 01-05-024
					 (Order 97-09A), § 173-340-900, filed 2/12/01, effective 8/15/01.
Reviser's note: The brackets and enclosed material in the
					 text of the above section occurred in the copy filed by the
					 agency.