Iowa DNR Risk Based Corrective Action

Risk Based Corrective Action

8LTM35

Sources

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Groundwater Sources

Chemical	MW/BH	Date	X (ft)	Y (ft)	Conc. (μg/L)
Benzene	MW-16	8/13/2003	106.0	37.0	4440.00
Toluene	MW-16	9/2/2004	106.0	37.0	7950.00
Ethylbenzene	MW-16	8/13/2003	106.0	37.0	4310.00
Xylene	MW-16	8/13/2003	106.0	37.0	14000.00
TEH-Diesel	MW-3A	9/11/2002	122.0	53.0	<5000.00
TEH-Waste Oil	MW-3A	9/11/2002	122.0	53.0	<5000.00

Soil Sources

Chemical	MW/BH	Date	X (ft)	Y (ft)	Elevation (ft)	Conc. (mg/kg)
Benzene	SBMW16R	3/10/2011	109.0	37.0	989.50	11.80
Toluene	SBMW16R	3/10/2011	109.0	37.0	989.50	15.70
Ethylbenzene	SBMW16R	3/10/2011	109.0	37.0	989.50	66.00
Xylene	SBMW16R	3/10/2011	109.0	37.0	989.50	185.00
TEH-Diesel	MW-3A	9/10/2002	122.0	53.0	990.20	24.70