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i <br /> • 1 <br /> • Eggirrman's Hydraulic Gar -3 - August 25, 2011 <br /> l a <br /> Remediation Summary <br /> • Free Product: No free product was documented throughout the life of this case <br /> • . Soil Excavation: An unknown volume of impacted soil was removed and disposed <br /> offsite in 1987 <br /> • In-Situ Soil Remediation: No soil remediation has been conducted <br /> Groundwater•Remediation: Ozone infusion proposed I' <br /> - f <br /> General Site Conditions n is <br /> • Geology and Hydrogeology: The Site is underlain'by interbedded and intermixed sand, <br /> silt and clay. The depth to groundwater varies seasonally between 37 to 40 feet bgs and <br /> the groundwater gradient is northeast at approximately 0.0015 feet/foot. <br /> • Groundwater Trends: There are more than 9 years of groundwater monitoring data for <br /> this Site. 1,2 DCA trends are shown below, source area (MW-2), near down gradie-nt, <br /> (MW-7) and far down gradienQMW-8) o t:. - n: <br /> 1,2-DICHLOROETHANE Results for MW2 <br /> 100r <br /> 7 -44'-V. _2 <br /> so <br /> so <br /> 10 Z + y..._ .... .. <br /> +-=..1,2-DICHLOROETHANE Trend- i 1 <br /> 1,2-DICHLOROETHANE Results for MW7 <br /> 140 1 1 <br /> -j- <br /> 100- <br /> 60 <br /> 00 <br /> } 40.7. ' _. i�.. ... .. .. <br /> 20 <br /> ,a.- - - - .0 <br /> : <br /> r....-._. 1,2-DICHLOROETHANE --.•Trend I I <br /> ' I <br /> I 1 ' <br /> 1,2-DICHLOROETHANE Results for MW8 <br /> 3. <br /> 1 � <br /> 0.5 <br /> O. ...:�•m`... I. ... .j.. ._` �,. ..ice' I 31 <br /> 40Ifs 1 <br /> C�i,2-DICHLOROETHANE�-Trend <br /> I <br />