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24 January 2012 <br /> AGE-NC Project No. 11-2040 <br /> Page 3 of 3 <br /> SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Soil samples will be collected using a 1.25-inch Geoprobe®soil sampling assembly loaded <br /> with four six-inch stainless steel sleeves. Upon sample retrieval, the ends of the second <br /> sleeve will be covered with Teflon® sheets, capped and sealed with tape. <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice <br /> and transported under chain-of-custody procedure to a CDPH-certified laboratory. Each <br /> sample sleeve will be labeled with the boring designation, depth, time, date and sampler's <br /> initials. Additionally, soil sample duplicates will be field-screened for the presence of <br /> volatile organic compounds using an organic vapor meter (OVM), equipped with <br /> photo-ionization detector (PID). <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, <br /> Advanced GeoEnvironmental, Inc. <br /> RdGert ELMarty Rebecca E. N <br /> President Staff Scientist <br /> cc: Mr. Gary Stewart, Community Bank of San Joaquin - SVP/Special Assets <br /> Department <br /> Advanced GeoEnvironmental,Inc. <br />