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26 September 2014 <br /> AGE Project No. 13-2675 <br /> Page 6 of 6 <br /> EQUIPMENT DECO NTA MINATIO N/WASTE MANAGEMENT <br /> Prior to use, all non-disposable sampling tools used for sample collection will be <br /> thoroughly rinsed with clean water after being washed with a solution of Alconox. Any <br /> soil or water waste generated during field activities will be containerized in properly <br /> labeled DOT-approved 55-gallon drums, and stored on-site in an area lacking public <br /> access. Disposal alternatives will be evaluated based on results of soil and water <br /> analysis. <br /> BORING ABANDONMENT <br /> All soil borings will be permanently sealed to prevent vertical migration of potential <br /> contaminants. Soil borings shall be abandoned by backfilling with cement grout from the <br /> total depth to surface grade. Borings advanced below the groundwater table will be <br /> abandoned with grout utilizing tremie procedures. The top three to six inches of the <br /> boring abandonments will be completed flush to surface grade with native soils or <br /> concrete. The SJCEHD will be notified for grout inspection at least 48 hours prior to <br /> conducting grouting procedures. <br /> If you have any questions or require further information, please contact our office at <br /> (800) 511-9300. <br /> Sincerely, <br /> Advanced GeoE nv ironfm.e_q- . <br /> ;4Qo\PN 4 �c�� <br /> mQ N <br /> No 8574 <br /> Brian W. Millman \� Daniel Villanueva <br /> Senior Project Geologist°Tq Ct70_F_C� Project Geologist <br /> California Professional Ge61- '' t'#8574 <br /> Advanced GeoEnvironmcntal,Inc. <br />