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GEoSYNTEc CONsuLTANTS <br /> Ms Amy Terrell <br /> 1 February 2005 <br /> Page 2 <br /> 1 <br />' San Jose, California, performed all fieldwork Blaine Tech's report, including field <br /> procedures and sampling logs, is provided in Attachment 1 <br />' GROUNDWATER ELEVATIONS <br /> As required by the MRP, depth to groundwater was measured in monitoring wells <br /> MW-2, MW-4, MW-5, and MW-6 during the 4th quarter 2004 monitoring event Table <br /> 1 summarizes the depth to groundwater measured during this and previous sampling <br /> events <br /> ANALYTICAL RESULTS <br /> 'Keystone Laboratories of Newton, Iowa, analyzed groundwater samples collected <br /> from monitoring wells MW-2 and MW-6 for the suite of bioremediation parameters <br /> 10 including volatile organic compounds (EPA Method 8260B), permanent gases (ASTM <br /> Method D1945), metabolic acids (by HPLU V), conventional chemistry parameters, <br /> and total and dissolved metals Analytical results for the 4th quarter 2004 sampling <br /> event .xe summarized in Table 2 The analytical laboratory report is provided in <br /> Attachment 2 <br /> Monitoring well MW-2 is located immediately downgradient of the pilot study test <br /> plot and monitoring well MW-6 is located in the center of the test plot Observations <br /> related to monitoring the pilot study are summarized below <br /> ♦ In MW-2, the concentration of 1,2-DCP for the first time has been <br /> detected in the single digits at 8 6 micrograms per liter (pg/L) 1,2,3- <br /> TCP remains below detection <br />' ♦ In MW-6, 1,2-DCP was detected near pre-injection concentrations <br /> 1,2,3-TCP was not detected for the first time since the pilot study began <br /> ♦ Ammonia concentrations in MW-2 and MW-6 are roughly unchanged <br /> • P 1PRJ2003REM\WF51VER\MONF14Q04\OAK04078 doc <br /> R <br />