ARCHIVED REPORTS_XR0009069 - Laserfiche WebLink

Home Browse Search

Plate VI is a generalized map of the propert�f showing the location of the UST in relation to other featire=_" It was Used to fuel company vehicles and other equipment. It had been tested for integrity in September , 1990, and was shown to be tight . 1t was In good condition when removed, rhe associateo piping ano fuel dispenser did not show any evidence of laaks or severe corrosion. Tank disposition tracking records are attacl-hea as Exhibit 8 , and the tank tightness test records are shown ter,, Exhibit C. SUMMARY OF PRIOR WORK: On October 19, 1992, Jam Thorpe Oil , Inc_ Q T0, ) filed an Appli- cation for Underground Storage Tank Closure Permit to remove a 1 ,000 gallon UST gasoline tank at the site., �Exhibst A. ) As noteo above, the tank had been tested on 9-28-199() by J10, and was found to be within allowable tolerances After receiving County approval , JTO removes ane -_ank . disper =ir,c u-11t !, associated piping on 11-2-1992. Whila e<cavating on the north wail , a small lease of gray-colorec clay was noted at abOU- 2- 5 Leet depth , just below the fill material . It had a hvdrocar bon odor , but it was not aetermined whether the co�or was dL.e to contamination , or was the natural soil color. T"o soil samples were taken from beneath the removed UST at depths of 9. 5 9-, 10 feet bgl ; (see Plate VII) and two c:') composite samples were taken from the removes spoil . The apparent area of contamination was not sampled. Required tests were for BTEX , EDD, TFH-G, and total lead. Laboratory analysis of the soil samples taken from beneath the UST and the spoil pile revealed that BTEk , TPH-G, and EDB were below detection limits. Total Lead was below detection limits in the two samples from beneath the tank , but was measured at z. O mg/kg in the composite spoil pile sample The sample was thea retested for soluble lead , (STLC; ) which sho"eo that no soluolelln-l- was present in the sample. Refer to Table I and Exhibit D for more details. The small amount of apparent contaminat-ion noted on the north wall of the former tank site was of concern to the County EHD staff , and verbal permission was given to e„cay.ate aoditional soil in a northerly direction to see If it couid be removed. On November 11 , 1992, JTO removed appro, imately 25 cubic yards o-f spoil In a circular area to the north of the removed UST, •,ent stat}- '-, fuel dispenser. The petroleum sizielling gray colored clay was stili present at eaistance of about 10 feet , on the north °y east walls at a depth of about 4 feet. At this time , true Count,, J