Sample Name: SP6-SD1

Sample date: October 9, 2007
Operable Unit: 5
Sample Type: soil
Sample Depth: 0 - 6 in
Location Description: DePue Lake Shoreline Seep Sediment

Contaminants above Illinois EPA soil background level  :

• Barium
• Cadmium
• Chromium
• Copper
• Lead
• Mercury
• Thallium
• Zinc

Latitude: +41.3220822      Longitude: -89.3046955

Metal Contaminants:

Contaminant	Background Level	Amount Detected
Aluminum	9200 mg/kg	3190 mg/kg
Antimony	3.3 mg/kg	<19 mg/kg
Arsenic	11.3 mg/kg	4.6 mg/kg
Barium	122 mg/kg	323 mg/kg
Beryllium	0.56 mg/kg	0.35 mg/kg
Cadmium	0.5 mg/kg	26 mg/kg
Calcium	5525 mg/kg	119000 mg/kg
Chromium	13 mg/kg	16 mg/kg
Cobalt	8.9 mg/kg	3.5 mg/kg
Copper	12 mg/kg	48 mg/kg
Iron	15000 mg/kg	11000 mg/kg
Lead	20.9 mg/kg	153 mg/kg
Magnesium	2700 mg/kg	4960 mg/kg
Manganese	630 mg/kg	505 mg/kg
Mercury	0.5 mg/kg	0.14 mg/kg
Nickel	13 mg/kg	9.8 mg/kg
Potassium	1100 mg/kg	398 mg/kg
Phosphorus	(No background)	NT mg/kg
Selenium	0.37 mg/kg	<11 mg/kg
Silver	0.5 mg/kg	0.45 mg/kg
Sodium	130 mg/kg	<1610 mg/kg
Thallium	0.42 mg/kg	1.6 mg/kg
Vanadium	25 mg/kg	9.6 mg/kg
Zinc	60.2 mg/kg	1950 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.