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13 August 2003 <br /> AGE-NC Project No 02-0962 <br /> Page 5 of 5 <br /> volatile organic compounds using an organic vapor meter(OVM), equipped with photo-ionization <br /> detector(PID) m <br /> t <br /> 4 3 GRAB GROUND WATER SAMPLING PROCEDURES <br /> The soil boring will be advanced to the flop of the ground water table, as Identified by collection of <br /> a saturated soil sample, to collect a grab ground water sample Once ground water has been <br /> encountered, a hydropunch-equivalent water sampling device will be driven two to three feet Into <br /> the water-bearing zone Groundwater samples will be collected w3 ith a hydropunch-equivalent water <br /> sampling assembly fitted with one-Inch diameter 0 010-inch slotted temporary well screen Each <br /> ground water sample will be extracted by lowering a bailer through the hollow center of the drive <br /> rods and Into the screen section Depending on subsurface and drilling conditions,grab ground water <br /> samples may also be collected directly through the augers using a new disposable bailer <br /> Ground water samples will be collected into laboratory supplied containers Ground water samples <br /> for BTEX, TPH-g/d, fuel oxygenating compound, and lead scavenger compound analyses will be <br /> collected Into laboratory-supplied, 40-m1 VOA vials contairung 0 5-ml of hydrochloric acid as <br /> preservative and 1-L amber bottles without sample preservative Following collection the samples <br /> will be appropriately labeled,placed on Ice and kept in a cooler until delivered to the laboratory for <br /> analysis Chain-of-custody protocols will be used to document sample custody transfer from the field <br /> to the analytical laboratory�A chain-of-custody form will accompany the samples <br /> 4 4 EQUIPMENT DECONTAMINATION <br /> ' r <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 /> i <br /> 4 5 BORING ABANDONMENT <br /> All probe borings will be permanently sealed to prevent vertical migration of potential contaminants <br /> Soil borings shall be abandoned by backfilling with portland cement utilizing a tremie pipe from the <br /> total depth to surface grade <br /> Advanced GeoEnvironmental,Inc. <br /> e Y <br /> r <br />