Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 742 - TIERED APPROACH TO CORRECTIVE ACTION OBJECTIVES
Subpart L - BUILDING CONTROL TECHNOLOGIES
Appendix A - General
Table G - Concentrations of Inorganic Chemicals in Background Soils

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

Chemical Name

Counties Within Metropolitan Statistical Areas (mg/kg)

Counties Outside Metropolitan Statistical Areas (mg/kg)

Aluminum

9,500

9,200

Antimony

4.0

3.3

Arsenic

13.0

11.3

Barium

110`

122

Beryllium

0.59

0.56

Cadmium

0.6

0.50

Calcium

9,300

5,525

Chromium

16.2

13.0

Cobalt

8.9

8.9

Copper

19.6

12.0

Cyanide

0.51

0.50

Iron

15,900

15,000

Lead

36.0

20.9

Magnesium

4,820

2,700

Manganese

636

630

Mercury

0.06

0.05

Nickel

18.0

13.0

Potassium

1,268

1,100

Selenium

0.48

0.37

Silver

0.55

0.50

Sodium

130

130.0

Sulfate

85.5

110

Sulfide

3.1

2.9

Thallium

0.32

0.42

Vanadium

25.2

25.0

Zinc

95.0

60.2

BOARD NOTE: Counties within Metropolitan Statistical Areas: Boone, Champaign, Clinton, Cook, DuPage, Grundy, Henry, Jersey, Kane, Kankakee, Kendall, Lake, Macon, Madison, McHenry, McLean, Menard, Monroe, Peoria, Rock Island, Sangamon, St. Clair, Tazewell, Will, Winnebago and Woodford.

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