Sample Name: K2-4.0-6.0

Sample date: April 14, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 4-6 feet
Location Description: Chemistry Core

Contaminants above Illinois EPA soil background level  :

• Aluminum
• Barium
• Beryllium
• Cadmium
• Chromium
• Copper
• Iron
• Lead
• Mercury
• Selenium
• Silver
• Thallium
• Zinc
• Cyanide

Latitude: +41.3198944      Longitude: -89.3125916

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	9340 mg/kg
Antimony	3.3 mg/kg	<8.5 mg/kg
Arsenic	11.3 mg/kg	6.1 mg/kg
Barium	122 mg/kg	167 mg/kg
Beryllium	0.56 mg/kg	0.59 mg/kg
Cadmium	0.5 mg/kg	1.9 mg/kg
Calcium	5525 mg/kg	20000 mg/kg
Chromium	13 mg/kg	16 mg/kg
Cobalt	8.9 mg/kg	7.5 mg/kg
Copper	12 mg/kg	21 mg/kg
Iron	15000 mg/kg	17900 mg/kg
Lead	20.9 mg/kg	30 mg/kg
Magnesium	2700 mg/kg	8970 mg/kg
Manganese	630 mg/kg	501 mg/kg
Mercury	0.5 mg/kg	0.2 mg/kg
Nickel	13 mg/kg	19 mg/kg
Potassium	1100 mg/kg	1150 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	5 mg/kg
Silver	0.5 mg/kg	1.4 mg/kg
Sodium	130 mg/kg	707 mg/kg
Thallium	0.42 mg/kg	0.53 mg/kg
Vanadium	25 mg/kg	21 mg/kg
Zinc	60.2 mg/kg	233 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.