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( brought .to grade within the bucket of' the -backhoe bucket . <br /> i 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 withdrawn <br /> hen'withdrawn and its ends covered with aluminum foil ; fitted 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 Total7Petroleum 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 /> T.a b l e 3 # r <br /> Analytical Results of Soil Samples Acquired from <br /> Exploratory Trenches- Excavated on February 22 , 1994 <br /> 275 Grant Line Road, Tracy , CA <br />' Sample -Date <br /> & Depth of TPH-D TPH-G B T - E X TOG <br /> Sample ( ft ) . (.ppm) (ppm) (ppm) (ppm) <br /> ----------------------------------------------------------- <br /> --- -----ND N . D . N.D.' <br /> - ---- --N. D. T N . D. I3 <br /> - -- <br /> Bldg Tr/8 . 5 N .D . - <br /> F <br /> BT North/8 ' N. D . N . D . - N . D . N.'D. N .D.• N. D . N .D. <br /> 1 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'. b . N',D . N .D . N . D. N . D ." <br /> I BT South/8 ' . N . D . N .D. ' N .D. N :D. N`. D. N . D. A 91 <br /> i --------------------------- -------------- -------------- <br /> Method - <br /> Detection 1 . 0. 1 . 0 5 . 0 5 . 0 5 . 0 5 .0 10. <br /> Limit <br /> -------------------------- _ - ---- . -- ----_-----_--------- 4 <br /> Bldg Tr . . . Building Trench h <br /> TPH-D . . . Total Petroleum Hydrocarbons as Diesel <br /> TPH-G . : . Total Petroleum Hydrocarbons as Gasoline <br /> BTEX . . . Benzene, toluene, ethylbenzene, total xylenes <br /> TOG . . . Total'-' Oil' and Grease <br /> ppm. . . Part8 per million <br /> ppb . . . Parts per billion ( 1 -ppm = 1 , 000 ppb) : <br /> Page 6 <br /> a _ - <br />