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08 December 2008 <br /> AGE-NC Project No. 07-1537 <br /> Page 4 of 4 <br /> center of the push rods into the screen section. Appropriately sealed and labeled samples will be <br /> placed in a chilled containerunder ice and transported under chain-of-custody procedure to a CDPH- <br /> certified laboratory. Each sample container will be labeled with the boring designation, time, date <br /> and sampler's initials. <br /> 3.4. EQUIPMENT DECONTAMINATION <br /> Prior to use,all sampling tools used for sample collection will be thoroughly rinsed with clean water <br /> after being washed with a solution of Alconox. All probing rods will be cleaned prior to <br /> advancement at each probe boring location. <br /> 3.5. BORING ABANDONMENT <br /> The probe boring will be permanently sealed to prevent vertical migration of potential contaminants. <br /> The soil probe boring shall be abandoned by backfilling with portland cement from the total depth <br /> to surface grade. <br /> Advanced GeoEnvironmental,Inc. <br />