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07 May 2009 <br /> AGE-NC Project No. 09-1688 <br /> Page 3 of 3 <br /> 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 /> BORING ABANDONMENT <br /> All probe borings will be permanently sealed to prevent vertical migration ofpotential contaminants. <br /> Soil borings shall be abandoned by backfilling with portland cement from the total depth to surface <br /> grade. <br /> A boring permit application,permit fee,Master File Record Form,initial oversight fees,and a health <br /> and safety plan are attached. Additionally, prior to mobilization, the area of excavation will be <br /> clearly marked and a utility clearance obtained through Underground Service Alert. <br /> If you have any questions or require further information,please contact our office at(209)467-1006. <br /> No. 7473 <br /> Ally L. Colavita William R. Little '>q\F cnuF�Q�\P <br /> Project Scientist Senior Project Geologist — <br /> California Professional Geologist No. 7473 <br /> cc: Ms. Mila Padilla <br /> Mr. Andy Zarakani <br /> Advanced GeoEnvironmental,Inc. <br />