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' �.-. as-� .: - �'• -'s- ,rx ssofe� ::=-r t.. _ _ .��-. sa�n��,� r <br /> The Beverage Source wnc <br /> "-210 2 i 99-5030 <br /> May 25, 1955 <br /> GGROUNDWATER SAMPLING <br /> prior to sampling, the monitoring wells were purged using hand <br /> bailing methods until stabilization of pH and conductivity <br /> occurred. The stabilization of pH and conductivity indicates the <br /> presence of representative formation water within the well <br /> casing. <br /> Subsequent to the purging process, groundwater samples were <br /> obtained from each monitoring well. The groundwater samples <br /> were obtained using an EPA approved TeflonTM sampler and placed V <br /> in 40 milliliter (ml) glass vials with TeflonTM septum caps in a <br /> manner such that no air was trapped inside. The samples were <br /> labeled and placed on ice in an insulated cooler along with the <br /> appropriate Chain-of-Custody forms and delivered to GT Environ- <br /> mental. Laboratories in Concord, California, for analyses. The <br /> groundwater samples were analyzed for TPH using EPA Method 413.1 ; <br /> TPH as gasoline and BTEY using modified EPA Method 602; and for <br /> ANAs using EPA 'Method 610. Groundwater sampling was conducted in <br /> accordance with GTI SOPS 9, 10, is and 12 (see Appendix II) . <br /> S_-TE CONDITIONS <br /> ::DROGEOLOGv <br /> . . <br /> -he si--e is t-e no=h ce.--ai Z:or__v.. c; :tea, San <br /> Jcauuin Valla y zowCgrGp iV in Ona vic-n:ty or she size is <br /> relatively =1az, j-'te 21e az`_O is appro::amatelV ^� fee (i�MSan <br /> Sea Level Datum) . The Mokel,zmn e River flows :c the wes z a 'a <br /> r l <br /> ... .. .iv- vl w.l- S_.. Vtlr'•..�CC�wa-..'i., �.._S.� ' �� ... <br /> underlain by 10w lying d-ace-n.e deposits consist-ing <br />