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Page 6 <br /> Mr Michael Infurna Jr, Senior RENS <br /> January 20,2004 <br /> concentrations were measured in the groundwater sample collected from <br /> monitoring well MW-2 (see Table 3), but at significantly lower levels compared <br /> to those collected during previous monitoring events The current benzene and <br /> TPHg concentrations in the MW-2 sample were measured at 300 micrograms per <br /> liter (ug/1) and 23,000 ug/l, respectively (compared to 10,000 ug/l and 100,000 <br /> ug/l in April 2003) Current toluene, ethylbenzene and xylenes concentrations also <br /> display large decreases compared to last quarter <br /> Oxygenate compounds were not detected in any of the samples collected from <br /> the monitoring wells However, laboratory detection limits for these oxygenate <br /> compounds remain relatively high in the MW-2 sample due to equipment <br /> interference PESC expects that the laboratory detection limits will be lower in <br /> future MW-2 samples if petroleum concentrations continue to decline <br /> s <br /> Closing <br /> PESC intends to continue quarterly groundwater monitoring at the subject site <br /> The next scheduled round of monitoring will be performed in April 2004 If <br /> petroleum concentrations continue to decrease at the levels seen to date, then <br /> PESC may request that the remediation system be shut down for a quarter <br /> Subsequent to that, PESC will perform groundwater monitoring and assess results <br /> to determine further actions <br /> Sincerely yours, <br /> PHILIP SERVICES CORP <br /> Mark F Milward <br /> i Senior Geological Engineer <br /> 1= 0104MON DOC <br /> Attachment 1 Tables <br /> 2 Figures <br /> 3 Laboratory Analytical Reports <br />