Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 742 - TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVES › Subpart L - BUILDING CONTROL TECHNOLOGIES › Appendix B - Tier 1 Illustrations and Tables › Table H - Tier 1 Soil Gas and Groundwater Remediation Objectives for the Indoor Inhalation Exposure Route - Diffusion and Advectionj

Current through Register Vol. 48, No. 28, July 12, 2024
Qsoil equals 83.33
					 cm3/seca
Soil Gas
Groundwater
CAS No.
Chemical Name
Residential
(mg/m3)
Industrial/
Commercial
(mg/m3)
Residential
(mg/L)
Industrial/
Commercial (mg/L)
67-64-1
Acetone
750,000f
750,000f
1,000,000g
1,000,000g
71-43-2
Benzene
0.37c
2.8c
0.11c
0.41c
111-44-4
Bis(2-chloroethyl)ether
0.014c
0.087c
0.083c
0.43c
75-27-4
Bromodichloromethane
450,000f
450,000f
6,700g
6,700g
75-25-2
Bromoform
11c
52c
3.1c
12c
71-36-3
Butanol
29,000f
29,000f
74,000g
74,000g
78-93-3
2-Butanone (MEK)
6,400b
40,000b
10,000b
48,000b
75-15-0
Carbon disulfide
780b
5,300b
67b
210b
56-23-5
Carbon tetrachloride
0.21c
1.5c
0.020c
0.076c
108-90-7
Chlorobenzene
69b
420b
26b
82b
124-48-1
Chlorodibromomethane
57,000f
57,000f
2,600g
2,600g
67-66-3
Chloroform
0.11c
0.92c
0.07i
0.15c
95-57-8
2-Chlorophenol
17,000f
17,000f
22,000g
22,000g
75-99-0
Dalapone
1,500f
1,500f
900,000g
900,000g
96-12-8
1,2-Dibromo-3-chloropropanee
0.0012c
0.0062c
0.00065c
0.0027c
106-93-4
1,2-Dibromoethane
0.0078c
0.048c
0.0035c
0.014c
95-50-1
1,2-Dichlorobenzene
290b
1,700b
140b
160g
106-46-7
1,4-Dichlorobenzene
1,200b
6,800b
79g
79g
75-71-8
Dichlorodifluoromethane
270b
1,700b
3.0b
9.2b
75-34-3
1,1-Dichloroethane
690b
4,200b
180b
580b
107-06-2
1,2-Dichloroethane
0.099c
0.81c
0.054c
0.22c
75-35-4
1,1-Dichloroethylene
240b
1,600b
24b
74b
156-59-2
cis
-1,2-Dichloroethylene
1,100,000f
1,100,000f
3,500g
3,500g
156-60-5
trans
-1,2-Dichloroethylene
85b
510b
16b
51b
78-87-5
1,2-Dichloropropane
0.31c
2.3c
0.12c
0.48c
542-75-6
1,3-Dichloropropylene (
cis
+
trans
)
0.90c
6.2c
0.14c
0.52c
123-91-1
p-Dioxane
0.22c
2.3c
2.9c
25c
100-41-4
Ethylbenzene
1,3c
9.3c
0.37c
1.4c
76-44-8
Heptachlor
0.0063c
0.032c
0.0025c
0.0096c
118-74-1
Hexachlorobenzene
0.0087c
0.057c
0.0059c
0.0062g
77-47-4
Hexachlorocyclopentadiene
0.58b
2.6b
0.084b
0.26b
67-72-1
Hexachloroethane
2,800f
2,800f
50g
50g
78-59-1
Isophorone
2,900b
3,400f
12,000g
12,000g
98-82-8
Isopropylbenzene (Cumene)
600b
3,500b
2.7b
8.4b
7439-97-6
Mercuryh
0.42b
2.5b
0.053b
0.060g
74-83-9
Methyl bromide
6.9b
42b
1.5b
4.8b
1634-04-4
Methyl tertiary-butyl ether
3,700b
24,000b
1,900b
6,800b
75-09-2
Methylene chloride
5.6c
45c
2.1c
8.2c
91-57-6
2-Methylnaphthalene
530f
530f
25g
25g
95-48-7
2-Methylphenol (o-cresol)
600b
1,800f
26,000g
26,000g
91-20-3
Naphthalene
0.11c
0.75c
0.075c
0.32c
98-95-3
Nitrobenzene
0.077c
0.57c
0.34c
2.0c
621-64-7
n-Nitrosodi-n-propylamine
0.0016c
0.012c
0.044c
0.27c
108-95-2
Phenol
140b
1,300b
28,000b
83,000g
1336-36-3
Polychlorinated biphenyls (PCBs)
---d
---d
---d
---d
100-42-5
Styrene
1,400b
8,500b
310g
310g
127-18-4
Tetrachloroethylene
0.55c
4.0c
0.091c
0.34c
108-88-3
Toluene
6,200b
40,000b
530g
530g
120-82-1
1,2,4-Trichlorobenzene
5.4b
25b
1.8b
5.9b
71-55-6
1,1,1-Trichloroethane
6,600b
41,000b
1,000b
1,300g
79-00-5
1,1,2-Trichloroethane
170,000f
170,000f
4,400g
4,400g
79-01-6
Trichloroethylene
1.5c
12c
0.34c
1.3c
75-69-4
Trichlorofluoromethane
860b
5,600b
26b
82b
108-05-4
Vinyl acetate
250b
1,600b
160b
550b
75-01-4
Vinyl chloride
0.29c
4.8c
0.028c
0.21c
108-38-3
m-Xylene
140b
850b
43b
130b
95-47-6
o-Xylene
120b
790b
40b
130b
106-42-3
p-Xylene
130b
820b
38b
120b
1330-20-7
Xylenes (total)e
140b
840b
30b
93b
Chemical Name and Remediation Objective Notations
a Compliance is determined by
					 meeting either the soil gas remediation objectives or the groundwater
					 remediation objectives. See Sections 742.505 and 742.515.
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 BOL if calculation of Tier 2 or 3
					 remediation objectives is desired.
e Groundwater remediation objective
					 calculated at 25°C. For Dalapon and 1,2-Dibromo-3-chloropropane, the
					 critical temperature (Tc) and enthalpy of vaporization
					 at the normal boiling point (Hv,b) are not available.
					 For Xylenes (total), the enthalpy of vaporization at the normal boiling point
					 (Hv,b) is not available.
f 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.
g The value shown is the
					 solubility of the chemical in water. The solubility of the chemical becomes the
					 remediation objective if the calculated value exceeds the solubility or if
					 there are no toxicity criteria available for the ingestion route of
					 exposure.
h 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.
i The value shown is the
					 Groundwater Remediation Objective listed in Appendix B, Table E.
j Calculated values for the
					 remediation objectives in this table are based on the assumption that the
					 existing or potential building has a full concrete slab-on-grade, though the
					 remediation objectives in this table are also considered protective of
					 occupants of buildings with full concrete basement floors and walls. This table
					 applies only when the existing or potential building has a full concrete
					 slab-on-grade or a full concrete basement floor and walls. Institutional
					 controls under Subpart J are required to use remediation objectives in this
					 table. This table does not apply when the existing or potential building has
					 neither a full concrete slab-on-grade nor a full concrete basement floor and
					 walls, such as a building with an earthen crawl space, an earthen floor, a
					 stone foundation, a partial concrete floor, or a sump. In such cases, site
					 evaluators have the option of excluding the indoor inhalation exposure route
					 under Section 742.312, meeting the building control technology requirements
					 under Subpart L, or proposing an alternative approach under Tier
					 3.