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fl <br /> y.. <br /> it <br /> c <br /> 02 <br /> Ccmuftants <br /> I . <br /> 2.0 E <br /> FIELD ACTIVITIFs <br /> ! A" 2.1 QUARTERLY GROUNDWATER MONITORING QUARTER ENDING <br /> � s l!)ECEMBFR 199i. <br /> Groundwater samples were collected by WCC on December 31, 1991 from monitoring wells <br /> MW-1, MW-2, and MW-3. To complete this task, WCC first sounCad each well to <br /> ✓1 <br /> d-termine the depts) to water from the top of the chrsty box., well volume, and the presence <br /> of free product (ifany). <br /> Monitoring wells TxW-1, MW-2,and MW-3, were <br /> then sampled for TI H,STEX, total lead <br /> � <br /> end fecal coliform. To complete this task, the wells were purger] a minimum of three well <br /> casings volumes with a dedicated Teflon bailer. The purged water from each well was <br /> placed in 55 gallon drums. The"water temperature, pH, and specific conductance were <br /> measured and were recorded on the water sample logs presented in Appendix A. These ' <br /> results are tabulated in Table 3 Groundwater samples were then collected from each well yl <br /> ►n with a clean Teflon`bail10R1 . er. The water samples were Collected in three labeled laboratory <br /> prepared 40-m1 clear glass vials sealed with Teflon lined septa,250-m1 clear tall wide mouth <br /> E <br /> 4 glass jars with Teflon=lined closures, and a 50 ml 1'1algene' bottIe. . The:filled sample <br /> t <br /> containers were place,in an ice sliest with frozen blue ice: A travel blank/equiprnentb]ank, <br /> (designated as MW-24)and a blind duplicate sample of MW-3desi nated MW-23)were <br /> Lr ti" as <br /> g <br /> also included. The samples were submitted to Matrix.and Anlab for analysis under chain-of- <br /> custody. The samples were analyzed for TFH by EPA method 5030, `13TEX by EPA <br /> r <br /> method 8020,total lead by EPA method 7420,and'fecill coliform 6y Standard Method`9921. - <br /> 91 <br /> , <br /> RIVART.OR"02-20-sz 2-1 <br /> i <br />