Sample Name: SP3-SD1

Sample date: October 9, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 0 - 4 in
Location Description: DePue Lake Shoreline Seep Sediment

Contaminants above Illinois EPA soil background level  :

• Cadmium
• Copper
• Lead
• Zinc

Latitude: +41.3212421      Longitude: -89.3084054

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	3160 mg/kg
Antimony	3.3 mg/kg	<19 mg/kg
Arsenic	11.3 mg/kg	5.7 mg/kg
Barium	122 mg/kg	55 mg/kg
Beryllium	0.56 mg/kg	0.3 mg/kg
Cadmium	0.5 mg/kg	1.8 mg/kg
Calcium	5525 mg/kg	240000 mg/kg
Chromium	13 mg/kg	6.4 mg/kg
Cobalt	8.9 mg/kg	4 mg/kg
Copper	12 mg/kg	28 mg/kg
Iron	15000 mg/kg	9730 mg/kg
Lead	20.9 mg/kg	58 mg/kg
Magnesium	2700 mg/kg	116000 mg/kg
Manganese	630 mg/kg	374 mg/kg
Mercury	0.5 mg/kg	<0.26 mg/kg
Nickel	13 mg/kg	9 mg/kg
Potassium	1100 mg/kg	623 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<11 mg/kg
Silver	0.5 mg/kg	0.43 mg/kg
Sodium	130 mg/kg	<1600 mg/kg
Thallium	0.42 mg/kg	<8.0 mg/kg
Vanadium	25 mg/kg	11 mg/kg
Zinc	60.2 mg/kg	1410 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.