Statutes, codes, and regulations
Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTIONPart 742 - TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVESSubpart L - BUILDING CONTROL TECHNOLOGIES
Appendix B - Tier 1 Illustrations and Tables
Table F - Values Used to Calculate the Tier 1 Soil Remediation Objectives for the Soil Component of the Groundwater Ingestion Route

Ill. Admin. Code tit. 35, pt. 742, subpt. L, app B, tbl. F

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Current through Register Vol. 48, No. 49, December 6, 2024
Table F - Values Used to Calculate the Tier 1 Soil Remediation Objectives for the Soil Component of the Groundwater Ingestion Route

GWobj Concentration used to Calculate

Tier 1 Soil Remediation Objectivesa

CAS No.

Chemical Name

Class I

(mg/L)

Class II

(mg/L)

Organics

83-32-9

Acenaphthene

2.0b

10

67-64-1

Acetone

6.3

6.3

15972-60-8

Alachlor

0.002c

0.01c

116-06-3

Aldicarb

0.003c

0.015c

309-00-2

Aldrin

5.0 E-6b

2.5 E-5

120-12-7

Anthracene

10b

50

1912-24-9

Atrazine

0.003c

0.015c

71-43-2

Benzene

0.005c

0.025c

56-55-3

Benzo(a)anthracene

0.0001b

0.0005

205-99-2

Benzo(b)fluoranthene

0.0001b

0.0005

207-08-9

Benzo(k)fluroanthene

0.001b

0.005

50-32-8

Benzo(a)pyrene

0.0002a,c

0.002c

65-85-0

Benzoic Acid

100b

100

111-44-4

Bis(2-chloroethyl)ether

8.0E-5b

8.0E-5

117-81-7

Bis(2-ethylhexyl)phthalate (Di(2-ethylhexyl)phthalate)

0.006a,c

0.06c

75-27-4

Bromodichloromethane

(Dichlorobromomethane)

0.1b

0.1

75-25-2

Bromoform

0.1b

0.01

71-36-3

Butanol

4.0b

4.0

85-68-7

Butyl benzyl phthalate

7.0b

35

86-74-8

Carbazole

0.004b

0.02

1563-66-2

Carbofuran

0.04c

0.2c

75-15-0

Carbon disulfide

4.0b

20

56-23-5

Carbon tetrachloride

0.005c

0.025c

57-74-9

Chlordane

0.002c

0.01c

GWobj Concentration used to Calculate

Tier 1 Soil Remediation Objectivesa

CAS No.

Chemical Name

Class I

(mg/L)

Class II

(mg/L)

106-47-8

4-Chloroaniline (r-Chloroaniline)

0.1b

0.1

108-90-7

Chlorobenzene

(Monochlorobenzene)

0.1c

0.5c

124-48-1

Chlorodibromomethane

(Dibromochloromethane)

0.06b

0.06

67-66-3

Chloroform

0.1b

0.5

95-57-8

2-Chlorophenol (pH 4.9 -7.3)

0.2b

1.0

2-Chlorophenol (pH 7.4 -8.0)

0.2

0.2

218-01-9

Chrysene

0.1b

0.05

94-75-7

2,4-D

0.07c

0.35c

75-99-0

Dalapon

0.2c

2.0c

72-54-8

DDD

0.0004b

0.002

72-55-9

DDE

0.0003b

0.0015

50-29-3

DDT

0.0003b

0.0015

53-70-3

Dibenzo(a,h)anthracene

1.0E-5b

5.0E-5

96-12-8

1,2-Dibromo-3-chloropropane

0.0002c

0.002c

106-93-4

1,2-Dibromoethane

(Ethylene dibromide)

0.00005a,c

0.0005c

84-74-2

Di-n-butyl phthalate

4.0b

20

95-50-1

1,2-Dichlorobenzene

(o - Dichlorobenzene)

0.6c

1.5c

106-46-7

1,4-Dichlorobenzene

(p - Dichlorobenzene)

0.075c

0.375c

91-94-1

3,3'-Dichlorobenzidine

0.0002b

0.001

75-34-3

1,1-Dichloroethane

4.0b

20

107-06-2

1,2-Dichloroethane

(Ethylene dichloride)

0.005c

0.025c

75-35-4

1,1-Dichloroethylene

0.007c

0.035c

156-59-2

cis-1,2-Dichloroethylene

0.07c

0.2c

156-60-5

trans-1,2-Dichloroethylene

0.1c

0.5c

120-83-2

2,4-Dichlorophenol

0.1b

0.1

78-97-5

1,2-Dichloropropane

0.005c

0.025c

542-75-6

1,3-Dichloropropene

(1,3-Dichloropropylene, cis + trans)

0.0005b

0.0025

GWobj Concentration used to Calculate

Tier 1 Soil Remediation Objectivesa

CAS No.

Chemical Name

Class I

(mg/L)

Class II

(mg/L)

60-57-1

Dieldrin

5.0E-6b

2.5E-5

84-66-2

Diethyl phthalate

30b

30

105-67-9

2,4-Dimethylphenol

0.7b

0.7

51-28-5

2,4-Dinitrophenol

0.04b

0.04

121-14-2

2,4-Dinitrotoluene

0.0001b

0.0001

606-20-2

2,6-Dinitrotoluene

0.0001

0.0001

88-85-7

Dinoseb

0.007c

0.07c

117-84-0

Di-n-octyl phthalate

0.7b

3.5

115-29-7

Endosulfan

0.2b

1.0

145-73-3

Endothall

0.1c

0.1c

72-20-8

Endrin

0.002c

0.01c

100-41-4

Ethylbenzene

0.7c

1.0c

206-44-0

Fluoranthene

1.0b

5.0

86-73-7

Fluorene

1.0b

5.0

76-44-8

Heptachlor

0.0004c

0.002c

1024-57-3

Heptachlor epoxide

0.0002c

0.001c

118-74-1

Hexachlorobenzene

0.001b

0.005

319-84-6

alpha-HCH (alpha-BHC)

1.0E-5b

5.0E-5

58-89-9

gamma-HCH (Lindane)

0.0002c

0.001c

77-47-4

Hexachlorocyclopentadiene

0.05c

0.5c

67-72-1

Hexachloroethane

0.007

0.035

193-39-5

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

0.0001b

0.0005

78-59-1

Isophorone

1.4

1.4

72-43-5

Methoxychlor

0.04c

0.2c

74-83-9

Methyl bromide (Bromomethane)

0.05b

0.25

1634-04-4

Methyl tertiary-butyl ether

0.07

0.07

75-09-2

Methylene chloride (Dichloromethane)

0.005c

0.05c

95-48-7

2-Methylphenol (o-Cresol)

2.0b

2.0

91-20-3

Naphthalene

0.14

0.22

98-95-3

Nitrobenzene

0.02b

0.02

GWobj Concentration used to Calculate

Tier 1 Soil Remediation Objectivesa

86-30-6

N-Nitrosodiphenylamine

0.02b

0.1

621-64-7

N-Nitrosodi-n-propylamine

1.0E-5b

1.0E-5

87-86-5

Pentachlorophenol

0.001a,c

0.005c

108-95-2

Phenol

0.1c

0.1c

1918-02-1

Picloram

0.5c

5.0c

1336-36-3

Polychlorinated biphenyls (PCBs)

---

---

129-00-0

Pyrene

1.0b

5.0

122-34-9

Simazine

0.004c

0.04c

100-42-5

Styrene

0.1c

0.5c

93-72-1

2,4,5-TP (Silvex)

0.05c

0.25c

127-18-4

Tetrachloroethylene (Perchloroethylene)

0.005c

0.025c

108-88-3

Toluene

1.0c

2.5c

8001-35-2

Toxaphene

0.003c

0.015c

120-82-1

1,2,4-Trichlorobenzene

0.07c

0.7c

71-55-6

1,1,1-Trichloroethane2

0.2c

1.0c

79-00-5

1,1,2-Trichloroethane

0.005c

0.05c

79-01-6

Trichloroethylene

0.005c

0.025c

95-95-4

2,4,5-Trichlorophenol (pH 4.9-7.8)

4.0b

20

2,4,5-Trichlorophenol (pH 7.9 -8.0)

4.0

4.0

88-06-2

2,4,6-Trichlorophenol (pH 4.9-6.8)

0.008b

0.04

2,4,6-Trichlorophenol (pH 6.9 -8.0)

0.008

0.008

108-05-4

Vinyl acetate

40b

40

75-01-4

Vinyl chloride

0.002c

0.01c

1330-20-7

Xylenes (total)

10.0c

10.0c

GWobj Concentration used to Calculate

Tier 1 Soil Remediation Objectivesa

CAS No.

Chemical Name

Class I

(mg/L)

Class II

(mg/L)

Inorganics

7440-36-0

Antimony

0.006c

0.024c

7440-38-2

Arsenic

0.05c

0.2c

7440-39-3

Barium

2.0c

2.0c

7440-41-7

Beryllium

0.004c

0.5c

7440-42-8

Boron

2.0c

2.0c

7440-43-9

Cadmium

0.005c

0.05c

7440-70-2

Calcium

---

---

16887-00-6

Chloride

200c

200c

7440-47-3

Chromium, total

0.1c

1.0c

18540-29-9

Chromium, ion, hexavalent

---

---

7440-48-4

Cobalt

1.0c

1.0c

7440-50-8

Copper

0.65c

0.65c

57-12-5

Cyanide

0.2c

0.6c

7782-41-4

Fluoride

4.0c

4.0c

15438-31-0

Iron

5.0c

5.0c

7439-92-1

Lead

0.0075c

0.1c

7439-95-4

Magnesium

---

---

7439-96-5

Manganese

0.15c

10.0c

7439-97-6

Mercury

0.002c

0.01c

7440-02-0

Nickel

0.1c

2.0c

14797-55-8

Nitrate as N

10.0c

100c

7723-14-0

Phosphorus

---

---

7440-09-7

Potassium

---

---

7782-49-2

Selenium

0.05c

0.05c

7440-22-4

Silver

0.05c

---

7440-23-5

Sodium

---

---

14808-79-8

Sulfate

400c

400c

7440-28-0

Thallium

0.002c

0.02c

7440-62-2

Vanadium

0.049

0.1

7440-66-6

Zinc

5.0c

10c

Chemical Name and Groundwater Remediation Objective Notations

a The Equation S17 is used to calculate the Soil Remediation Objective for the Soil Component of the Groundwater Ingestion Route; this equation requires calculation of the Target Soil Leachate Concentration (Cw) from Equation S18: Cw = DF x GWobj.

b Value listed is the Water Health Based Limit (HBL) for this chemical from Soil Screening Guidance: User's Guide, incorporated by reference at Section 742.210. The HBL is equal to the non-zero MCLG (if available); the MCL (if available); or, for carcinogens, a cancer risk of 1.0E-6, and for noncarcinogens is equal to a Hazard Quotient of 1.0. NOTE: These GWobj concentrations are not equal to the Tier 1 Groundwater Remediation Objectives for the Direct Ingestion of Groundwater Component of the Groundwater Ingestion Route, listed in Section 742.Appendix B, Table E.

c Value listed is also the Groundwater Quality Standard for this chemical pursuant to 35 Ill. Adm. Code 620.410 for Class I Groundwater or 35 Ill. Adm. Code 620.420 for Class II Groundwater.

Ill. Admin. Code tit. 35, pt. 742, subpt. L, app B, tbl. F

Amended at 31 Ill. Reg. 4063, effective February 23, 2007