Sample Name: F4-6.0-8.0

Sample date: April 14, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 6-8 feet
Location Description: Chemistry Core

Contaminants above Illinois EPA soil background level  :

• Cadmium
• Copper
• Thallium

Latitude: +41.3162659      Longitude: -89.3237417

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	6160 mg/kg
Antimony	3.3 mg/kg	NT mg/kg
Arsenic	11.3 mg/kg	7.8 mg/kg
Barium	122 mg/kg	74 mg/kg
Beryllium	0.56 mg/kg	0.38 mg/kg
Cadmium	0.5 mg/kg	0.57 mg/kg
Calcium	5525 mg/kg	53100 mg/kg
Chromium	13 mg/kg	12 mg/kg
Cobalt	8.9 mg/kg	5.9 mg/kg
Copper	12 mg/kg	14 mg/kg
Iron	15000 mg/kg	14100 mg/kg
Lead	20.9 mg/kg	9.5 mg/kg
Magnesium	2700 mg/kg	21700 mg/kg
Manganese	630 mg/kg	465 mg/kg
Mercury	0.5 mg/kg	<0.14 mg/kg
Nickel	13 mg/kg	15 mg/kg
Potassium	1100 mg/kg	988 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<4.4 mg/kg
Silver	0.5 mg/kg	0.12 mg/kg
Sodium	130 mg/kg	170 mg/kg
Thallium	0.42 mg/kg	1.1 mg/kg
Vanadium	25 mg/kg	15 mg/kg
Zinc	60.2 mg/kg	60 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.