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♦ rfl <br /> �PL3 v <br /> C LEARWATER <br /> CROUP INC <br /> Eniren rima-tia! 5,rtiRs <br /> 3 0 FIELD ACTIVITIES <br /> Field work was performed in accordance with Clearwater Field Procedures <br /> (previously submitted) and under the directives and guidelines established by the <br /> PHS/EHD and the Central Valley Regional Water Quality Control Board All <br /> monitoring wells were gauged and sampled on August 20, 1996 <br /> Depth to water was gauged from the survey mark at the top of each well casing <br /> Prior to sampling, all wells were purged of a minimum of three well volumes <br /> Because of an equipment malfunction, the conductivity, temperature and pH were <br /> measured in purge water from MW-6 only Well purging information is presented <br /> in Appendix A <br /> Groundwater samples were collected from the monitoring wells using dedicated <br /> polyethylene bailers Well numbers and sampling information were recorded on <br /> sample labels and documented on a chain-of-custody form The samples were then <br /> placed in a chilled cooler for transport to American Envirorunental Network (AEN), <br /> a state DHS-certified laboratory located in Pleasant Hill, California All groundwater <br /> samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg) by EPA <br /> Method 8015 (5030/GCF1D), for benzene, toluene, ethylbenzene and total xylenes <br /> (BTEX), and methyl tert-butyl ether (MTBE) by EPA Method 8020 <br /> D-101 2Q96 2 September 20,1996 <br /> t <br />