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 A - Tier 1 Soil Remediation Objectives[a] for Residential Properties

Universal Citation: 35 IL Admin Code ยง A
Current through Register Vol. 48, No. 38, September 20, 2024

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

83-32-9

Acenaphthene

4,700b

---c

570b

2,900

*

67-64-1

Acetone

70,000b

100,000d

25b

25

*

15972-60-8

Alachloro

8e

---c

0.04

0.2

NA

116-06-3

Aldicarbo

78b

---c

0.013

0.07

NA

309-00-2

Aldrin

0.04e

3e

0.5e

2.5

0.94

120-12-7

Anthracene

23,000b

---c

12,000b

59,000

*

1912-24-9

Atrazineo

2700b

---c

0.066

0.33

NA

71-43-2

Benzene

12e

0.8e

0.03

0.17

*

56-55-3

Benzo(a)anthracene

0.9e,w

---c

2

8

*

205-99-2

Benzo(b)fluoranthene

0.9e,w

---c

5

25

*

207-08-9

Benzo(k)fluroanthene

9e

---c

49

250

*

50-32-8

Benzo(a)pyrene

0.09,w

---c

8

82

*

111-44-4

Bis(2-chloroethyl)ether

0.6e

0.2e

0.0004e

0.0004

0.66

117-81-7

Bis(2-ethylhexyl)phthalate

46e

31,000d

3,600

31,000d

*

75-27-4

Bromodichloromethane (Dichlorobromomethane)

10e

3,000d

0.6

0.6

*

75-25-2

Bromoform

81e

53e

0.8

0.8

*

71-36-3

Butanol

7,800b

10,000d

17b

17

NA

85-68-7

Butyl benzyl phthalate

16,000b

930d

930d

930d

*

86-74-8

Carbazole

32e

---c

0.6e

2.8

NA

1563-66-2

Carbofurano

390b

---c

0.22

1.1

NA

75-15-0

Carbon disulfide

7,800b

720d,x

32b

160

*

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

56-23-5

Carbon tetrachloride

5e

0.3e

0.07

0.33

*

57-74-9

Chlordane

1.8 e

72 e

10

48

*

106-47-8

4-Chloroaniline

(p-Chloroanaline)

310b

---c

0.7b

0.7

*

108-90-7

Chlorobenzene (Monochlorobenzene)

1,600b

130b

1

6.5

*

124-48-1

Chlorodibromomethane (Dibromochloromethane)

1,600b

1,300d

0.4

0.4

*

67-66-3

Chloroform

100e

0.3e

0.6

2.9

*

218-01-9

Chrysene

88e

---c

160

800

*

94-75-7

2,4-Do

780b

---c

1.5

7.7

*

75-99-0

Dalapono

2,300b

---c

0.85

8.5

*

72-54-8

DDD

3e

---c

16e

80

*

72-55-9

DDE

2e

---c

54e

270

*

50-29-3

DDT

2e

---g

32e

160

*

53-70-3

Dibenzo(a,h)anthracene

0.09e,f

---c

2

7.6

*

96-12-8

1,2-Dibromo-3-chloropropane

0.46e

11b

0.002

0.002

*

106-93-4

1,2-Dibromoethane

(Ethylene dibromide)

0.0075e

0.17e

0.0004

0.004

0.005

84-74-2

Di-n-butyl phthalate

7,800b

2,300d

2,300d

2,300d

*

95-50-1

1,2-Dichlorobenzene

(o - Dichlorobenzene)

7,000b

560d

17

43

*

106-46-7

1,4-Dichlorobenzene

(p - Dichlorobenzene)

---c

11,000b

2

11

*

91-94-1

3,3'-Dichlorobenzidine

1e

---c

0.007e,f

0.033

1.3

75-34-3

1,1-Dichloroethane

7,800b

1,300b

23b

110

*

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

107-06-2

1,2-Dichloroethane (Ethylene dichloride)

7e

0.4e

0.02

0.1

*

75-35-4

1,1-Dichloroethylene

3,900b

290b

0.06

0.3

*

156-59-2

cis-1,2-Dichloroethylene

780b

1,200d

0.4

1.1

*

156-60-5

trans-1,2-Dichloroethylene

1,600b

3,100d

0.7

3.4

*

78-87-5

1,2-Dichloropropane

9e

15b

0.03

0.15

*

542-75-6

1,3-Dichloropropene (1,3-Dichloropropylene, cis + trans)

6.4e

1.1e

0.004e

0.02

0.005

60-57-1

Dieldrinn

0.04e

1e

0.004e

0.02

0.603

84-66-2

Diethyl phthalate

63,000b

2,000d

470b

470

*

105-67-9

2,4-Dimethylphenol

1,600b

---c

9b

9

*

121-14-2

2,4-Dinitrotoluene

0.9e

---c

0.0008e,f

0.0008

0.250

606-20-2

2,6-Dinitrotoluene

0.9e

---c

0.0007e,f

0.0007

0.260

117-84-0

Di-n-octyl phthalate

1,600b

10,000d

10,000d

10,000d

*

115-29-7

Endosulfano

470b

---c

18b

90

*

145-73-3

Endothallo

1,600b

---c

0.4

0.4

NA

72-20-8

Endrin

23b

---c

1

5

*

100-41-4

Ethylbenzene

7,800b

400d

13

19

*

206-44-0

Fluoranthene

3,100b

---c

4,300b

21,000

*

86-73-7

Fluorene

3,100b

---c

560b

2,800

*

76-44-8

Heptachlor

0.1e

0.1e

23

110

0.871

1024-57-3

Heptachlor epoxide

0.07e

5e

0.7

3.3

1.005

118-74-1

Hexachlorobenzene

0.4e

1e

2

11

*

319-84-6

alpha-HCH (alpha-BHC)

0.1e

0.8e

0.0005e

0.003

0.0074

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

58-89-9

gamma-HCH (Lindane)n

0.5e,x

---c

0.009

0.047

*

77-47-4

Hexachlorocyclopentadiene

550b,x

10b

400

2,200d

*

67-72-1

Hexachloroethane

78b

---c

0.5b

2.6

*

193-39-5

Indeno(1,2,3-c,d)pyrene

0.9e,w

---c

14

69

*

78-59-1

Isophorone

15,600b

4,600d

8b

8

*

72-43-5

Methoxychloro

390b

---c

160

780

*

74-83-9

Methyl bromide

(Bromomethane)

110b

10b,x

0.2b

1.2

*

75-09-2

Methylene chloride

(Dichloromethane)

85e

13e

0.02e

0.2

*

95-48-7

2-Methylphenol

(o - Cresol)

3,900b

---c

15b

15

*

91-20-3

Naphthalene

1,600 b

170b,x

12 b

18

*

98-95-3

Nitrobenzene

39b

92b,x

0.1b

0.1

0.26

86-30-6

N-Nitrosodiphenylamine

130e

---c

1e

5.6

*

621-64-7

N-Nitrosodi-n-propylamine

0.09e

---c

0.00005e

0.00005

0.0018

108-95-2

Phenol

23,000b

---c

100b

100

*

1918-02-1

Picloramo

5,500b

---c

2

20

NA

1336-36-3

Polychlorinated biphenyls (PCBs)n

1h

---c,h

---h

---h

*

129-00-0

Pyrene

2,300b

---c

4,200b

21,000

*

122-34-9

Simazineo

390b

---c

0.04

0.37

NA

100-42-5

Styrene

16,000b

1,500d,x

4

18

*

127-18-4

Tetrachloroethylene

(Perchloroethylene)

12e

11e

0.06

0.3

*

108-88-3

Toluene

16,000b

650d,x

12

29

*

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

8001-35-2

Toxaphenen

0.6e

89e

31

150

*

120-82-1

1,2,4-Trichlorobenzene

780b

3,200b,x

5

53

*

71-55-6

1,1,1-Trichloroethane

---c

1,200d

2

9.6

*

79-00-5

1,1,2-Trichloroethane

310b

1,800d

0.02

0.3

*

79-01-6

Trichloroethylene

58e

5e

0.06

0.3

*

108-05-4

Vinyl acetate

78,000b

1,000b,x

170b

170

*

75-01-4

Vinyl chloride

0.46e

0.28e

0.01

0.07

*

108-38-3

m-Xylene

16,000b

420d,x

210

210

*

95-47-6

o-Xylene

16,000b

410d,x

190

190

*

106-42-3

p-Xylene

16,000b1

460d,x

200

200

*

1330-20-7

Xylenes (total)

16,000b

320d,x

150

150

*

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/kg)

Class II

(mg/kg)

ADL

(mg/kg)

Ionizable Organics

65-85-0

Benzoic Acid

310,000b

---c

400b,i

400i

*

95-57-8

2-Chlorophenol

390b

53,000d

4b,i

4i

*

120-83-2

2,4-Dichlorophenol

230b

---c

1b,i

1i

*

51-28-5

2,4-Dinitrophenol

160b

---c

0.2b

0.2

3.3

88-85-7

Dinosebo

78b

---c

0.34b,i

3.4i

*

87-86-5

Pentachlorophenol

3e,j

---c

0.03i

0.14i

*

93-72-1

2,4,5-TP (Silvex)

630b

---c

11i

55i

*

95-95-4

2,4,5-Trichlorophenol

7,800b

---c

270b,i

1,400i

*

88-06-2

2,4,6 Trichlorophenol

58e

200e

0.2e,i

0.77i

0.66

Exposure Route-Specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/L)

Class II

(mg/L)

ADL

(mg/kg)

Inorganics

7440-36-0

Antimony

31b

---c

0.006m

0.024m

*

7440-38-2

Arsenicl,n

t

750e

0.05m

0.2m

*

7440-39-3

Barium

5,500b

690,000b

2.0m

2.0m

*

7440-41-7

Beryllium

160b

1,300e

0.004m

0.5m

*

7440-42-8

Boron

16,000b

---g

2.0m

2.0m

*

7440-43-9

Cadmiuml,n

78b, r

1,800e

0.005m

0.05m

*

16887-00-6

Chloride

---c

---c

200m

200m

*

7440-47-3

Chromium, total

230 b

270e

0.1m

1.0m

*

16065-83-1

Chromium, ion, trivalent

120,000 b

---c

---g

---g

*

18540-29-9

Chromium, ion, hexavalent

230 b

270e

---

---

*

7440-48-4

Cobalt

4,700b

---c

1.0m

1.0m

*

7440-50-8

Coppern

2,900b

---c

0.65m

0.65m

*

57-12-5

Cyanide (amenable)

1,600b

---c

0.2q,m

0.6q,m

*

7782-41-4

Fluoride

4,700b

---c

4.0m

4.0m

*

15438-31-0

Iron

---c

---c

5.0m

5.0m

*

7439-92-1

Lead

400k

---c

0.0075m

0.1m

*

7439-95-4

Magnesiumn

325,000

---c

---c

---c

*

7439-96-5

Manganese

1,600b,v

69,000b,x

0.15m

10.0m

*

7439-97-6

Mercuryl,n,s

23b

10b

0.002m

0.01m

*

7440-02-0

Nickell

1,600b

13,000e

0.1m

2.0m

*

14797-55-8

Nitrate as Np

130,000b

---c

10.0q,m

100q

*

Exposure Route-specific Values for Soils

Soil Component of the Groundwater Ingestion Exposure Route Values

CAS No.

Chemical Name

Ingestion

(mg/kg)

Inhalation

(mg/kg)

Class I

(mg/L)

Class II

(mg/L)

ADL

(mg/kg)

7723-14-0

Phosphorusn

---g

---c

---c

---c

*

7440-09-7

Potassiumn

---g

---c

---c

---c

*

7782-49-2

Seleniuml,n

390b

---c

0.05m

0.05m

*

7440-22-4

Silver

390b

---c

0.05m

---

*

7440-23-5

Sodiumn

---g

---c

---c

---c

*

14808-79-8

Sulfate

---c

---c

400m

400m

*

7440-28-0

Thallium

6.3b,u

---c

0.002m

0.02m

*

7440-62-2

Vanadium

550b

---c

0.049m

0.1m

*

7440-66-6

Zincl

23,000b

---c

5.0m

10m

*

"*" Indicates that the ADL is less than or equal to the specified remediation objective.

NA means not available; no PQL or EQL available in USEPA analytical methods.

Chemical Name and Soil Remediation Objective Notations

a Soil remediation objectives based on human health criteria only.

b Calculated values correspond to a target hazard quotient of 1.

c No toxicity criteria available for the route of exposure.

d Soil saturation concentration (C[sat]) = the concentration at which the absorptive limits of the soil particles, the solubility limits of the available soil moisture, and saturation of soil pore air have been reached. Above the soil saturation concentration, the assumptions regarding vapor transport to air and/or dissolved phase transport to groundwater (for chemicals which are liquid at ambient soil temperatures) have been violated, and alternative modeling approaches are required.

e Calculated values correspond to a cancer risk level of 1 in 1,000,000.

g Chemical-specific properties are such that this route is not of concern at any soil contaminant concentration.

h40 CFR 761 contains applicability requirements and methodologies for the development of PCB remediation objectives. Requests for approval of a Tier 3 evaluation must address the applicability of 40 CFR 761.

i Soil remediation objective for pH of 6.8. If soil pH is other than 6.8, refer to Appendix B, Tables C and D of this Part.

j Ingestion soil remediation objective adjusted by a factor of 0.5 to account for dermal route.

k A preliminary remediation goal of 400 mg/kg has been set for lead based on Revised Interim Soil Lead Guidance for CERCLA Sites and RCRA Corrective Action Facilities, OSWER Directive #9355.4 -12.

l Potential for soil-plant-human exposure.

m The person conducting the remediation has the option to use: (1) TCLP or SPLP test results to compare with the remediation objectives listed in this Table; (2) where applicable, the total amount of contaminant in the soil sample results to compare with pH specific remediation objectives listed in Appendix B, Table C or D of this Part (see Section 742.510 ); or (3) the appropriate background value listed in Appendix A, Table G. If the person conducting the remediation wishes to calculate soil remediation objectives based on background concentrations, this should be done in accordance with Subpart D of this Part.

n The Agency reserves the right to evaluate the potential for remaining contaminant concentrations to pose significant threats to crops, livestock, or wildlife.

o For agrichemical facilities, remediation objectives for surficial soils which are based on field application rates may be more appropriate for currently registered pesticides. Consult the Agency for further information.

p For agrichemical facilities, soil remediation objectives based on site-specific background concentrations of Nitrate as N may be more appropriate. Such determinations shall be conducted in accordance with the procedures set forth in Subparts D and I of this Part.

q The TCLP extraction must be done using water at a pH of 7.0.

r Value based on dietary Reference Dose.

s Value for Ingestion based on Reference Dose for Mercuric chloride (CAS No. 7487-94-7); value for Inhalation based on Reference Concentration for elemental Mercury (CAS No. 7439-97-6). Inhalation remediation objective only applies at sites where elemental mercury is a contaminant of concern.

t For the ingestion route for arsenic, see 742.Appendix A, Table G.

u Value based on Reference Dose for Thallium sulfate (CAS No. 7446-18-6).

v Value based on Reference Dose adjusted for dietary intake.

w For sites located in any populated area as defined in Section 742.200, Appendix A, Table H may be used.

x The remediation objectives for these chemicals must also include the construction worker inhalation objective in Appendix B, Table B.

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