A General

Section 742.APPENDIX A   General Section 742.TABLE G   Concentrations of Inorganic Chemicals in Background Soils 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.