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01 February 2012 <br /> AGE-NC Project No. 11-2049 <br /> Page 3 of 4 <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 /> GRAB GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> For the collection of grab ground water samples, soil probe borings will be advanced to the <br /> top of the ground water table as identified by collection of a saturated soil sample. Once <br /> ground water has been encountered, a Geoprobe push-driven water sampling device will <br /> be advanced into the water-bearing zone. Grab ground water samples will be collected <br /> using a Geoprobe Screen Point 15 Ground Water Sampler TM (GWS) fitted with a new <br /> one-half inch 0.010-inch slotted temporary well screen. Ground water samples will be <br /> extracted using inertial action by lowering Teflon tubing through the hollow center of the <br /> push rods into the screen section. Each ground water sample will be collected into four <br /> laboratory supplied 40-ml volatile organic analysis(VOA)vials and one laboratory supplied <br /> 1-liter amber bottle, both without preservative. Following collection, appropriately sealed <br /> and labeled samples will be placed in a chilled container under ice and transported under <br /> chain-of-custody procedure to a CDPH-certified laboratory. Each sample container will be <br /> labeled with the boring designation, time, date and sampler's initials. <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 asphalt patch or concrete. <br /> Advanced GeoEnvironmental,Inc. <br />