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Page 6 <br /> contamination. Soil excavated from the trench near the <br /> western property boundary shown no evidence of <br /> contamination. Excavated soil was placed atop 6 mil <br /> polyethylene sheeting and covered with the sheeting <br /> Soil samples were obtained at the direction of Ms. Mary <br /> Meays of the San Joaquin County Public Health Services <br /> Agency Environmental Health Division (PHS/EHD) Each <br /> sample was obtained from a consolidated block of soil <br /> brought to grade within the bucket of the backhoe bucket <br /> After removing the top few inches of soil from the portion <br /> of the bucket to be sampled, a 1 . 9 inch diameter by 6 .0 <br /> inch long clean brass tube was driven into the soil until <br /> it was completely filled with material The tube was then <br /> withdrawn and its ends covered with aluminum foil , fitted <br /> with plastic caps, and sealed with duct tape. Each tube <br /> was then labeled and placed into an iced, insulated <br /> container for transportation to Priority Environmental Labs <br /> of Milpitas under chain of custody Certified analyses <br /> were subsequently performed for Total Petroleum Hydro- <br /> carbons as as Diesel (TPH-D) using EPA Methods 3550/8015, <br /> Total Petroleum Hydrocarbons as Gasoline (TPH-G) , benzene, <br /> toluene, ethylbenzene, and total xylenes (BTEX) using EPA <br /> Methods 5030/8015-8020 , and Oil and Grease (TOG) using SM <br /> • 5520 D&F The results of these analyses are summarized in <br /> the following table: <br /> Table 3 <br /> Analytical Results of Soil Samples Acquired from j <br /> Exploratory Trenches Excavated on February 22 , 1994 <br /> 275 Grant Line Road, Tracy, CA <br /> I <br /> Sample Date <br /> & Depth of TPH-D TPH-G B T E X TOG <br /> Sample (ft) (ppm) (ppm) (ppm) (ppm) <br /> _-----------------------------------------------------r------ <br /> Bldg Tr/8 . 5 N.D N. D. N.D. N.D . N .D. N .D. 13 <br /> BT North/8 ' N.D. N.D N.D. N.D N.D. N D. N D. <br /> BT Center/3 ' N.D. N.D N.D. N.D. N.D N .D N.D <br /> BT Center/8 ' N D. N D. N.D N .D. N.D. N D. N D. <br /> BT South/8 ' N D. N.D N .D. N.D. N.D. N.D. 91 <br /> ---------------------------------------------------------- <br /> Method <br /> Detection 1 .0 1 0 5 .0 5 .0 5 . 0 5 .0 10 <br /> . Limit-------------------------------------------------------- <br />