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S Y TUAT l ON: <br /> On August 11, 1988, a 10, 000--gallon gasoline tank was <br /> removed from this site at the location shown on the attached site <br /> plan. <br /> Soil samples were taken at the East and West end of the tank <br /> hole. The results of TPH, TBX test are as follows and laboratory <br /> test results are attached, <br /> Sample # Location TPH B T X EB V LEAD <br /> PPM PPB PPB PPB PPB PPB PPM <br /> 1 East End @ 17 ' <10 <1.0 «.0 <1.0 <1.0 <1.0 <0.05 <br /> 2 West End @ 15 ' <10 220 4 5 <1.0 <1.0 <0.05 <br /> PPM = Parts Per Million <br /> PPB = Parts Per Billion <br /> The laboratory reports are in conflict with field <br /> conditions. Sample No. 1 has to be Sample No. 2, and No. 2 has <br /> to be Sample No. 1. The east end of the tank hole at 17 ' is the <br /> contaminated cite. <br /> . The tank was thoroughly inspected for leaks . No holes in <br /> the tank were found. Three locations on the tank indicated <br /> corrosion. The corroded areas were each about 1/2" in diameter <br /> and had corroded about 80% through the steel plane. One corroded <br /> spot was at the west end of the tank, one near the center and one <br /> at the east end. There was no indication of leakage at any of <br /> these locations . Other than these three small spots, the tank <br /> appeared to be in excellent condition_ <br /> Based on tank hole inspection and tank inspection it is <br /> assumed that the soils contamination at the east end of the tank <br /> is due to overfill . The fill and vent were both at the east end <br /> of the tank. The dispenser was a suction type pump located at <br /> the center of the tank. The tank was manufactured in 1951. <br /> PROPOSAL <br /> I <br /> This tank site is in the area of an ongoing investigation <br /> from a prior spill. The existing open tank hole is in the <br /> traveled way of Teichert ' s yard and presents some danger in its <br /> open condition. <br /> The proposal is to move in excavating equipment large enough <br /> to evacuate the. contaminated soil or to a depth of 30'+. <br /> Excavated soil will be stockpiled on site for aeration at a later <br /> date. After the contaminated soils is removed the tank hole will <br /> be backfilled. <br /> -2- <br /> V000 NQS QNV INHHOTRI 9SZT999 XVJ VZ:91 TO/£0/TT <br />