Sample Name: S1-4.0-6.1

Sample date: April 15, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 4-6.1 feet
Location Description: Chemistry Core

Contaminants above Illinois EPA soil background level  :

• Iron
• Manganese
• Thallium

Latitude: +41.3219647      Longitude: -89.294589

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	6690 mg/kg
Antimony	3.3 mg/kg	<7.1 mg/kg
Arsenic	11.3 mg/kg	5 mg/kg
Barium	122 mg/kg	77 mg/kg
Beryllium	0.56 mg/kg	0.46 mg/kg
Cadmium	0.5 mg/kg	0.3 mg/kg
Calcium	5525 mg/kg	55500 mg/kg
Chromium	13 mg/kg	12 mg/kg
Cobalt	8.9 mg/kg	8.5 mg/kg
Copper	12 mg/kg	12 mg/kg
Iron	15000 mg/kg	15600 mg/kg
Lead	20.9 mg/kg	9 mg/kg
Magnesium	2700 mg/kg	22800 mg/kg
Manganese	630 mg/kg	681 mg/kg
Mercury	0.5 mg/kg	<0.12 mg/kg
Nickel	13 mg/kg	18 mg/kg
Potassium	1100 mg/kg	736 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<4.1 mg/kg
Silver	0.5 mg/kg	<1.2 mg/kg
Sodium	130 mg/kg	234 mg/kg
Thallium	0.42 mg/kg	0.96 mg/kg
Vanadium	25 mg/kg	18 mg/kg
Zinc	60.2 mg/kg	36 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.