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I <br /> 09 June 2000 , <br /> AGE-NC Proj ect No. 98-0497 <br /> Page 9 of 10 <br /> bottom of the bailer by lifting up on the check valve. - <br /> 4.4.4. -Sample Handling <br /> Groundwater samples will be collected into laboratory- upp lied containers. Ground water samples . <br /> for BTEX,TPH-g, and fuel oxygenates analyses Will be: ollected into 40-m1 VOA.vials containing <br /> 0.5 ml of hydrochloric acid as preservative. Samples for PH-d analysis will be collected into 1-liter. <br /> amber glass containers without a preservative. Followin or collection,the samples will be placed ori <br /> ice and kept in a cooler until delivered to the laboratory f r analysis.Chain-of-custody protocols will <br /> be used to document sample custody transfer-from the field to the analytical laboratory.A chain-of- <br /> custody form will accompany the samples. <br /> 4.5. EQUIPMENT DECONTAMINATION _ <br /> All sampling tools used for sample collection will be tho roughly washed with a solution of Alconox <br /> and rinsed with,clean water prior to each sampling local ion. All probing rods will be cleaned prior. <br /> to advancement at each probe boring location. Hollow- tem augers will be steam,=cleaned prior to <br /> each boring. . <br /> 4.6. BORING ABANDONMENT <br /> All soil borings not completed as monitoring wells, if py, will be permanently sealed to prevent <br /> vertical migration of potential contaminants: Soil borings shall'be abandoned by backfilling with <br /> bentonite or cement-bentonite slurry from the:total dep1h to surface grade. The PHS-EHD will be <br /> notified for grout inspection at least 72-h6urs prior to conducting grouting procedures. <br /> 4.7. SENSITIVE RECEPTOR SURVEY <br /> A search for potential ground water conduits and recept s within a 2,000-foot radius of the site will <br /> consist of the following: <br /> • A search of driller's water well logs on file with the Department of Water Resources; . <br /> A reconnaissance of visually observable potenti al receptors; <br /> • A search for Cityfor Stockton municipal well l�catioris with Cal-Water; - <br /> • A search for.San Joaquin County water well locations with PHS-EHD; <br /> Advanced GeoEnvironmental,'Inc. <br />