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March 10, 2003 NOA Environmental Project Number:LE03-063 Page 9 W equipment will be steam cleaned prior to use. Cleaning will be conducted in such a manner so as to contain the water,which will be placed in appropriate drums,labeled, sealed,and stored on site prior to disposal in an appropriate manner. The soil borings will be advanced by a truck-mounted drill rig equipped with a hollow-stem auger. Drilling fluids will not be used while advancing the borings. Sampling will be conducted by means LA of a driven split-spoon sampler containing a clean two inch diameter stainless steel sleeve. it is anticipated that two stainless steel sleeves containing soil will be retrieved during each sampling drive(or interval). One soil sample from each interval will be remanded to the custody of a California Certified Laboratory. The other soil sample from each interval will be field analyzed for odor and discoloration as described above under sampling location. Results of the field analysis will be tabulated and presented in a technical report_ Based upon the "headspace" test results and field observations any sample with apparent contamination may be subjected to laboratory analysis at the discretion of the site supervisor. A - sample from the first, second, or third sample interval below the level believed to be contaminated may be analyzed to facilitate assessment of the vertical extent of contamination. Disposal of Contaminated or Potentially Contaminated Material During Drilling Operations V If auger cuttings(bulk soils generated during the drilling operation.)produced during the advancement of the boring to their terminal depth are found to be contaminated, they will be placed in approved drums which will be sealed, labeled, and stored on site prior to disposal which will be conditional upon analytical results. Soil Sam le Handling Methods Following all soil sample retrieval, aluminum foil will be placed over both ends of each stainless steel V sleeve. Both ends of the sleeves will then be sealed with a tight fitting plastic cap and secured with adhesiveless tape and labeled. All soil samples will be preserved on ice and maintained at a temperature ofapproximately 4 degrees Celsius to limit the volatilization of any contaminants present. The soil samples will be transported under chain of custody to a California Certified Laboratory for analysis. All soil samples will be remanded to the custody of a California Certified Laboratory within 24 hours of retrieval. Each sample will be tested pursuant to USEPA Test Method 8015 for Total Petroleum Hydrocarbons (TPI) as Diesel and Gasoline and BTE&X. Water_Sampling One grab sample will be taken from the existing storm water pond on the site_ This sample will be collected in a clear acrylic bailer, preserved on ice, and remanded through due chain of custody to LN Sequoia Analytical Laboratories of Sacramento, where it will be tested pursuant to USEPA Test Method 8015 for TPH-d, TPH-g, and BTE&X.