Sample Name: SD-E 1-1.8

Sample date: October 8, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 12-21.6
Location Description: Supplemental

Contaminants above Illinois EPA soil background level  :

• Arsenic
• Barium
• Cadmium
• Copper
• Lead
• Mercury
• Silver
• Thallium
• Zinc
• Cyanide

Latitude: +41.3212061      Longitude: -89.3080251

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	3790 mg/kg
Antimony	3.3 mg/kg	<8.4 mg/kg
Arsenic	11.3 mg/kg	13 mg/kg
Barium	122 mg/kg	527 mg/kg
Beryllium	0.56 mg/kg	0.45 mg/kg
Cadmium	0.5 mg/kg	46 mg/kg
Calcium	5525 mg/kg	12100 mg/kg
Chromium	13 mg/kg	11 mg/kg
Cobalt	8.9 mg/kg	4.1 mg/kg
Copper	12 mg/kg	118 mg/kg
Iron	15000 mg/kg	11500 mg/kg
Lead	20.9 mg/kg	326 mg/kg
Magnesium	2700 mg/kg	4430 mg/kg
Manganese	630 mg/kg	215 mg/kg
Mercury	0.5 mg/kg	0.36 mg/kg
Nickel	13 mg/kg	13 mg/kg
Potassium	1100 mg/kg	433 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<4.9 mg/kg
Silver	0.5 mg/kg	2.6 mg/kg
Sodium	130 mg/kg	<696 mg/kg
Thallium	0.42 mg/kg	1.2 mg/kg
Vanadium	25 mg/kg	11 mg/kg
Zinc	60.2 mg/kg	3800 mg/kg

Notes: A value of NT indicates that this sample was not tested for a particular contaminant. A value of ND indicates that the contaminant was not detected in the test that was done for it.