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07 November 2012 <br /> AGE Project No. 11-2216 <br /> Page 3 of 3 <br /> the screen section. <br /> Each groundwater sample is collected into four laboratory supplied 40-ml volatile organic <br /> analysis (VOA) vials and one laboratory supplied 1-liter amber bottle, both without <br /> preservative. Following collection,appropriately sealed and labeled samples will be placed <br /> in a chilled container under ice and transported under chain-of-custody procedure to a <br /> CDPH-certified laboratory and analyzed for the following: <br /> • Total petroleum hydrocarbons(TPH-carbon chain)in accordance with EPA-method <br /> 8015-modified. <br /> • Volatile organic compounds (VOCs) in accordance with EPA-method 826013. <br /> EQUIPMENT DECONTAMINATION <br /> Prior to use, all sampling tools used for sample collection will be thoroughly rinsed with <br /> clean water after being washed with a solution of Alconox. All probing rods will be cleaned <br /> prior to advancement at each probe boring location. <br /> BORING ABANDONMENT <br /> The probe borings will be permanently sealed to prevent vertical migration of potential <br /> contaminants. Each soil boring shall be backfilled to surface grade with neat cement and <br /> covered with concrete. <br /> Please contact our office at 800 511-9300 if you have any questions or require further <br /> information. <br /> Sincerely, �SS�o%AiGFo�o <br /> Advanced GeoEnvironmental, Inc. QQ°\��PM R 41 /11 <br /> , '1 * No. 7473 <br /> W <br /> Robert L. Marty William R. Little <br /> President Senior Project Geologist�F of ca��F° <br /> California Professional Geologist No.7473 <br /> cc: SBS Pacific Properties <br /> Advanced GeoEnvironmental,Inc. <br />