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23 April 2001 <br /> AGE-NC Project No 96-0229 <br /> Page 7 of 7 <br /> the specified zone, then withdrawn approximately three feet to expose an Inlet screen The Interior <br /> of the sampling tool fills with water and a 1-Inch outer diameter(O D ) stainless steel bailer will be <br /> lowered and utilized to extract a ground water sample Grab ground water samples will be collected <br /> in Intervals of porous and permeable material All rinseate generated during drilling activities will <br /> be containerized in properly labeled DOT-approved 55-gallon drums, and was stored on-site in an <br /> area Iacking public access <br /> Following sample collection, the samples will be placed in laboratory-supplied containers and <br /> transported under chain-of-custody to a DHS-certified laboratory <br /> Proposed soil boring locations are Illustrated on Figure 2 Following borehole advancement,portland <br /> cement(grout mix)will be utilized to backfill each borehole utilizing a tremie pipe The PHS-EHD <br /> will be notified at least 48 hours in advance of field work and given the opportunity to Inspect the <br /> grout mix prior to backfilling activities <br /> 4 2 EQUIPMENT DECONTAMINATION <br /> SAll sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution of Alconox All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting each boring <br /> 43 SAMPLE HANDLING <br /> Ground water samples will be collected into laboratory supplied containers Ground water samples <br /> for TPH-g, BTEX and fuel oxygenate(EPA 8260) analyses will be collected into 40-m1 VOA vials <br /> containing 0 5 ml of hydrochloric acid as preservative Following collection the samples will be <br /> appropriately labeled and placed on ice and kept In a cooler until delivered to the laboratory for <br /> analysis Cham-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 /> Advanced GeoEnvaron mental,Inc <br />