Sample Name: K3-0-0.5

Sample date: April 24, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 0-6
Location Description: Geochronology Core

Contaminants above Illinois EPA soil background level  :

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

Latitude: +41.3181979      Longitude: -89.3125475

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	16100 mg/kg
Antimony	3.3 mg/kg	<17 mg/kg
Arsenic	11.3 mg/kg	9 mg/kg
Barium	122 mg/kg	175 mg/kg
Beryllium	0.56 mg/kg	0.87 mg/kg
Cadmium	0.5 mg/kg	18 mg/kg
Calcium	5525 mg/kg	40400 mg/kg
Chromium	13 mg/kg	40 mg/kg
Cobalt	8.9 mg/kg	13 mg/kg
Copper	12 mg/kg	127 mg/kg
Iron	15000 mg/kg	26000 mg/kg
Lead	20.9 mg/kg	94 mg/kg
Magnesium	2700 mg/kg	10500 mg/kg
Manganese	630 mg/kg	799 mg/kg
Mercury	0.5 mg/kg	0.38 mg/kg
Nickel	13 mg/kg	31 mg/kg
Potassium	1100 mg/kg	2560 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	9.6 mg/kg
Silver	0.5 mg/kg	1.1 mg/kg
Sodium	130 mg/kg	1370 mg/kg
Thallium	0.42 mg/kg	6.9 mg/kg
Vanadium	25 mg/kg	29 mg/kg
Zinc	60.2 mg/kg	2800 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.