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1 <br /> TS2-T2-12-W 12 West end of tank;ltwo feet below tank bottom. Soil <br /> had gray discoloration on excavation floor only, with a <br /> strong diesel/hea�, end hydrocarbon odor. PID = 1,100 <br /> ppm. Sidewallsi appeared to be clean. Soil type well <br /> graded sand. <br /> i <br /> TS2-T2-GW 13 Collected below Tank 2,strong petroleum hydrocarbon <br /> odor, no sheen visible. <br /> TS2-SP2-E Collected from east end of stockpile 2. <br /> TS2-SP2-W Collected from west end of stockpile 2. <br /> i <br /> NOTES: <br /> Alison Youngblood, PHS/EHD regulator <br /> Dave Barboza,Tracy Fire Dept Battalion Chief <br /> Generator EPA ID CAC 002360583 <br /> Transporter of rinsate: American Valley Waste Oil, EPA ID CAL 000827878 <br /> Manifest ffs for tank rinsate:Tank 120958403,Tank 2, 4 <br /> Destination of tank rinsate: Thorpe Oil to arrange. <br /> Transporter of tanks: Thorpe Oil <br /> Tank tracking#s: Tank 1: 39-515589;Tank 2: 39-515591 <br /> Destination of Tanks: Schnitzer Steel, Rancho Cordova, CA. Ii <br /> h <br /> 6/11/01 <br /> ,i <br /> Tank 1 was uncovered and inerted by placing the appropriate amount of dry ice inside the tank. <br /> The lower explosive level (LEL) for gasoline and oxygen;content was then monitored. When <br /> LEL and oxygen levels were within safe limits, excavation of Tank i resumed. During excavation <br /> of Tank 1, another UST of unknown contents (Tank 2, aprox 1,000 G) was discovered west of Tank 1. <br /> Tank 1 excavation dim 24 feet x 11 feet x 10 feet in east/west trend. Soil samples were collected from the <br /> eastern and western floors of the pit approximately 2 feet below thetankbottom. Soil was impacted and had <br /> gray discoloration Product was evident in impacted soil. Moderate to high diesel and heavy end petroleum <br /> hydrocarbon odor was evident along excavation floor; sidewalls appeared to be clean. Water was present in <br /> tank pit, which may have possibly been introduced from tank cleaiz ng activities. PHS/EHD requested two <br /> discrete stockpile samples in lieu of collecting two composite samples. Stockpile samples were collected <br /> from east and west ends. Stockpile.volume was aprox 58 yds. Water was present in the tank pit. Upon <br /> discussion with PHS/EHD, it was decided to collect water samples after the removal of the second tank. <br /> Subsequent to the removal ofTank I and associated sampling activities,Tank 2 was uncovered,however, the <br /> tank was not removed due to the inability to obtain vac truck for rinsate at such short notice. Tank 2 will be <br /> removed at later date. Analysis:TPHd,TPHg,gasoline oxygenates,BTEX,total lead. <br /> i <br /> 2 of 2 <br /> Ij <br />