Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 742 - TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVES
Subpart L - BUILDING CONTROL TECHNOLOGIES
Appendix A - General
Table I - Chemicals Whose Tier 1 Class Groundwater Remediation Objective Exceeds the 1 in 1,000,000 Cancer Risk Concentration

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

Chemical

Class I Groundwater Remediation Objective (mg/L)

1 in 1,000,000 Cancer Risk Concentration (mg/L)

ADL (mg/L)

Aldrin

0.014

0.000005

0.014

Benzo(a)pyrene

0.0002

0.000012

0.00023

Bis(2-chloroethyl)ether

0.01

0.000077

0.01

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

0.006

0.0061

0.0027

Carbon Tetrachloride

0.005

0.00066

0.0001

Chlordane

0.002

0.000066

0.00014

DDD

0.014

0.00023

0.014

DDE

0.01

0.00023

0.01

DDT

0.006

0.00023

0.006

Dibenzo(a,h)anthracene

0.0003

0.000012

0.0003

1,2-Dibromo-3-chloropropane

0.0002

0.000061

0.001

1,2-Dibromoethane

0.00005

0.00002

0.001

3,3'-Dichlorobenzidine

0.02

0.00019

0.02

1,2-Dichloroethane

0.005

0.00094

0.0003

Dieldrin

0.009

0.0000053

0.009

2,6-Dinitrotoluene

0.00031

0.0001

0.00031

Heptachlor

0.0004

0.000019

0.013

Heptachlor epoxide

0.0002

0.0000094

0.015

Hexachlorobenzene

0.00006

0.000053

0.00006

Alpha-HCH

0.00011

0.000014

0.000111

Tetrachloroethylene

0.005

0.0016

0.0004

Toxaphene

0.003

0.000077

0.00086

Vinyl chloride

0.002

0.000045

0.0002

Ionizable Organics

N-Nitrosodi-n-propylamine

0.0018

0.000012

0.0018

Pentachlorophenol

0.001

0.00071

0.000076

2,4,6-Trichlorophenol

0.01

0.007

0.01

Inorganics

Arsenic

0.05

0.000057

0.001

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