Sample Name: Q2-1.0-2.0

Sample date: April 24, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 24-Dec
Location Description: Geochronology Core

Contaminants above Illinois EPA soil background level  :

• Aluminum
• Arsenic
• Barium
• Beryllium
• Cadmium
• Chromium
• Copper
• Iron
• Lead
• Manganese
• Silver
• Vanadium
• Zinc

Latitude: +41.3201666      Longitude: -89.2991208

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	19800 mg/kg
Antimony	3.3 mg/kg	<11 mg/kg
Arsenic	11.3 mg/kg	12 mg/kg
Barium	122 mg/kg	202 mg/kg
Beryllium	0.56 mg/kg	1.1 mg/kg
Cadmium	0.5 mg/kg	23 mg/kg
Calcium	5525 mg/kg	18600 mg/kg
Chromium	13 mg/kg	71 mg/kg
Cobalt	8.9 mg/kg	13 mg/kg
Copper	12 mg/kg	115 mg/kg
Iron	15000 mg/kg	31100 mg/kg
Lead	20.9 mg/kg	85 mg/kg
Magnesium	2700 mg/kg	8780 mg/kg
Manganese	630 mg/kg	811 mg/kg
Mercury	0.5 mg/kg	<0.3 mg/kg
Nickel	13 mg/kg	45 mg/kg
Potassium	1100 mg/kg	2440 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<6.5 mg/kg
Silver	0.5 mg/kg	1.6 mg/kg
Sodium	130 mg/kg	930 mg/kg
Thallium	0.42 mg/kg	<4.7 mg/kg
Vanadium	25 mg/kg	37 mg/kg
Zinc	60.2 mg/kg	3410 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.