TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE G: WASTE DISPOSAL CHAPTER I: POLLUTION CONTROL BOARD SUBCHAPTER f: RISK BASED CLEANUP OBJECTIVES
PART 742
TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVES
SECTION 742.APPENDIX B TIER 1 ILLUSTRATIONS AND TABLES
Section 742.APPENDIX B Tier 1 Illustrations and Tables
Section 742.TABLE G Tier 1 Soil Gas Remediation
Objectives for the Outdoor Inhalation
Exposure Routea
CAS No.
|
Chemical
Name
|
Residential (mg/m3)
|
Industrial/Commercial (mg/m3)
|
Construction Worker (mg/m3)
|
67-64-1
|
Acetone
|
750,000e
|
750,000e
|
750,000e
|
71-43-2
|
Benzene
|
420c
|
800c
|
1,100c
|
111-44-4
|
Bis(2-chloroethyl)ether
|
1.3c
|
2.4c
|
3.4c
|
75-27-4
|
Bromodichloromethane
|
450,000e
|
450,000e
|
450,000e
|
75-25-2
|
Bromoform
|
1,800c
|
3,500c
|
4,900c
|
71-36-3
|
Butanol
|
29,000e
|
29,000e
|
29,000e
|
78-93-3
|
2-Butanone
(MEK)
|
380,000e
|
380,000e
|
15,000b
|
75-15-0
|
Carbon
disulfide
|
1,500,000e
|
1,500,000e
|
48,000b
|
56-23-5
|
Carbon
tetrachloride
|
290c
|
550c
|
770c
|
108-90-7
|
Chlorobenzene
|
36,000b
|
57,000b
|
3,700b
|
124-48-1
|
Chlorodibromomethane
|
57,000e
|
57,000e
|
150b
|
67-66-3
|
Chloroform
|
110c
|
200c
|
290c
|
95-57-8
|
2-Chlorophenol
|
17,000e
|
17,000e
|
17,000e
|
75-99-0
|
Dalapon
|
1,500e
|
1,500e
|
1,500e
|
96-12-8
|
1,2-Dibromo-3-chloropropane
|
0.14c
|
0.27c
|
0.38c
|
106-93-4
|
1,2-Dibromoethane
|
2.9c
|
5.6c
|
7.9c
|
95-50-1
|
1,2-Dichlorobenzene
|
11,000e
|
11,000e
|
6,700b
|
106-46-7
|
1,4-Dichlorobenzene
|
8,400e
|
8,400e
|
6,400b
|
75-71-8
|
Dichlorodifluoromethane
|
890,000b
|
1,400,000b
|
92,000b
|
75-34-3
|
1,1-Dichloroethane
|
870,000b
|
1,300,000e
|
90,000b
|
107-06-2
|
1,2-Dichloroethane
|
67c
|
130c
|
180c
|
75-35-4
|
1,1-Dichloroethylene
|
520,000b
|
820,000b
|
5,300b
|
156-59-2
|
cis-1,2-Dichloroethylene
|
1,100,000e
|
1,100,000e
|
1,100,000e
|
156-60-5
|
trans-1,2-Dichloroethylene
|
120,000b
|
190,000b
|
12,000b
|
78-87-5
|
1,2-Dichloropropane
|
240c
|
470c
|
110c
|
542-75-6
|
1,3-Dichloropropylene
(cis + trans)
|
1,900c
|
3,700c
|
1,400c
|
123-91-1
|
p-Dioxane
|
16c
|
30c
|
42c
|
100-41-4
|
Ethylbenzene
|
59,000e
|
59,000e
|
8,500b
|
76-44-8
|
Heptachlor
|
0.40c
|
0.76c
|
1.1c
|
118-74-1
|
Hexachlorobenzene
|
0.26c
|
0.28e
|
0.28e
|
77-47-4
|
Hexachlorocyclopentadiene
|
85b
|
140b
|
440b
|
67-72-1
|
Hexachloroethane
|
2,800e
|
2,800e
|
2,800e
|
78-59-1
|
Isophorone
|
3,400e
|
3,400e
|
1,500b
|
98-82-8
|
Isopropylbenzene
(Cumene)
|
30,000e
|
30,000e
|
30,000e
|
7439-97-6
|
Mercuryf
|
22e
|
22e
|
0.62b
|
74-83-9
|
Methyl
bromide
|
12,000b
|
19,000b
|
2,400b
|
1634-04-4
|
Methyl
tertiary-butyl ether
|
1,200,000e
|
1,200,000e
|
23,000b
|
75-09-2
|
Methylene
chloride
|
6,100c
|
12,000c
|
5,100b
|
91-57-6
|
2-Methylnaphthalene
|
530e
|
530e
|
530e
|
95-48-7
|
2-Methylphenol
(o-cresol)
|
1,800e
|
1,800e
|
410b
|
91-20-3
|
Naphthalene
|
560b
|
620e
|
5.8b
|
98-95-3
|
Nitrobenzene
|
6.5c
|
12c
|
10b
|
621-64-7
|
n-Nitrosodi-n-propylamine
|
0.056c
|
0.11c
|
0.15c
|
108-95-2
|
Phenol
|
1,500e
|
1,500e
|
79b
|
1336-36-3
|
Polychlorinated
biphenyls (PCBs)
|
---d
|
---d
|
---d
|
100-42-5
|
Styrene
|
34,000e
|
34,000e
|
16,000b
|
127-18-4
|
Tetrachloroethylene
|
360c
|
690c
|
970c
|
108-88-3
|
Toluene
|
140,000e
|
140,000e
|
50,000b
|
120-82-1
|
1,2,4-Trichlorobenzene
|
1,000b
|
1,600b
|
110b
|
71-55-6
|
1,1,1-Trichloroethane
|
870,000e
|
870,000e
|
89,000b
|
79-00-5
|
1,1,2-Trichloroethane
|
170,000e
|
170,000e
|
170,000e
|
79-01-6
|
Trichloroethylene
|
1,700c
|
3,300c
|
1,500b
|
75-69-4
|
Trichlorofluoromethane
|
2,100,000b
|
3,400,000b
|
220,000b
|
108-05-4
|
Vinyl
acetate
|
160,000b
|
250,000b
|
1,600b
|
75-01-4
|
Vinyl
chloride
|
780c
|
3,000c
|
3,000b
|
108-38-3
|
m-Xylene
|
52,000e
|
52,000e
|
3,100b
|
95-47-6
|
o-Xylene
|
41,000e
|
41,000e
|
2,600b
|
106-42-3
|
p-Xylene
|
55,000e
|
55,000e
|
3,300b
|
1330-20-7
|
Xylenes
(total)
|
49,000e
|
49,000e
|
2,900b
|
Chemical Name and Remediation
Objective Notations
a For
the outdoor inhalation exposure route, it is acceptable to determine compliance
by meeting either the soil or soil gas remediation objectives. The soil
remediation objectives for the outdoor inhalation route are located in Appendix
B, Tables A and B.
b Calculated
values correspond to a target hazard quotient of 1.
c Calculated
values correspond to a cancer risk level of 1 in 1,000,000.
d PCBs
are a mixture of different congeners. The appropriate values to use for the
physical/chemical and toxicity parameters depend on the congeners present at
the site. Persons remediating sites should consult with IEPA Bureau of Land
(BOL) if calculation of Tier 2 or 3 remediation objectives is desired.
e The
value shown is the Cvsat value of the chemical in soil
gas. The Cvsat of the chemical becomes the remediation
objective if the calculated value exceeds the Cvsat value
or if there are no toxicity criteria available for the inhalation route of
exposure.
f Value
for the inhalation exposure route is based on Reference Concentration for
elemental Mercury (CAS No. 7439-97-6). Inhalation remediation objectives only
apply at sites where elemental Mercury is a contaminant of concern.
(Source: Added at 37 Ill.
Reg. 7506, effective May 15, 2013)
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