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Mr Donald Kirk September 22, 1997 Page 5 Presumed fill pipe, and boring USTIS was drilled a the fill pipe approximately 20 feet west of The location of UST2 is near the southeast corner of th within a fenced electrical transformer area Evidencee warehouse building, reports of a former gas pump used for fueling forklifts of nthhl U�included feet square concrete pad with a filled circular pattern j wall, and a crimped 2-inch diameter s area, a 2 feet by z p in the middle along the ground near the pad This i e metal pipe sticking one foot out of the Again,metal objects in the P cnl y have been the of this feature vent pipe for the tank determination of the tank's exact location or to orientation prevented geophysical reported that the electrical transformer and g physical concrete pad ereein taileinz d employee approximately five years ago Because it was not ossibl mounted Geoprebe rig Inside the fenced area, the two soil borings,the truck- UST25,were drilled just outside the fence (as shown I were continuously cored from the surface to a orings, UST2N and n Figure 2) The boreholes ground water was encountered pproxlmately $ feet bgs, where first Attachment B Drilling logs for the borings are presented as ERM Preserved USTIN and U TIS,land frompls from approximately 7 to 7 5 feet dee I �i UST2N and UST2S, for laboratory approximately 6 5 to 7 feet dee in borP n boreholes sample was field screened for relative concentrations At the time of collection, each s photoionization detector PID ntrations of organic vapors usinga along with a strong hydrocarbon odor,readi gs up to 53$ arts re detected insoils collected fromion p7 to S feet in boxing USTIN PID readings 36 feet bgs in boring USTIN No significantg ppm were detected In soils from detected in soils from organic vapors or PID readings were and degraded hydrocarbon odor were eing USTIS PID ectedreadiI gs up to 335 ppm (at 6 feet bgs) vapors u to 503 detected in soils from UST2N Organic P Ppm (at 8 feet bgs) and degraded hydrocarbon odor were detected in soils from boring UST2S ERM submitted a total of four soil samples from the locations to the laboratory, where they were presumed former UST diesel, and for BTEX Hydrocarbon detections n soil for TPH as gasoline and (Attachment A) Laboratory reports and chain of custody summarized in Table I and ground water samples are presented as Attachment documentation for sol] around the presumed former UST locations show u C TPH soli results diesel and/or motor oil range from I,IOQ to show unknown hydrocarbons in the hydrocarbons in the gasoline range were detected In UST2N-7 Ug/kg (ppb) Unknown and UST2S-7 No VO soil samples USTIN-7, laboratory reporting limits In any of Using EPA Alesethod 8260 were detected above r ethylbenzene and total xylenes y samples, although the VOCs the samples ng EPA Method 8020 were defected In some of