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i:enned;rJe n`.cs <br /> Hr. Tom Terrill <br /> Reynolds and Brown <br /> 23 January 1987 <br /> Page Six <br /> Results of the analyses of soil samples are summarized in Table <br /> 1 . 1 . Laboratory reports of soil sample analyses are presented <br /> in Attachment C. Petroleum hydrocarbons were not detected in <br /> any of the soil samples analyzed. Three of the four soil sam- <br /> ples analyzed for volatile gasoline constituents contained <br /> toluene, in concentrations ranging from 13 to 43 ug/Kg (parts <br /> per billion) . <br /> Results of analysis of groundwater samples collected from the <br /> monitor well are presented in Table 1 . 2. Laboratory reports of <br /> these analyses are presented in Attachment C. Neither petroleum <br /> hydrocarbons nor volatile gasoline constituents were detected in <br /> the groundwater samples or the field blanks. <br /> CONCLUSIONS <br /> Based on information derived from the previously described field <br /> investigation and laboratory analyses for this site, the follow- <br /> ing conclusions can be drawn. <br /> 1) Elevated levels of organic vapors were not detected by head- <br /> space analysis of soil samples at the time of collection. <br /> 2) Petroleum hydrocarbons were not detected by laboratory anal- <br /> ysis of soil samples from above and below the water table. <br /> Petroleum hydrocarbons were not detected in the groundwater <br /> sample from well tiY71, although groundwater at the site was <br /> detected within one foot of the tank bottom. <br /> 3 ) Toluene was detected . in three of the four soil samples anal- <br /> yzed for volatile constituents typically found in gasoline. <br /> The concentrations detected ranged from 13 to 43 mg/Kg <br /> (parts per billion ) . <br /> Toluene was not found in the groundwater sample collected <br /> from well MV11 . <br /> 4 ) The toluene detected in soil samples apparently has not been <br /> introduced to soil from leakage of product from the under- <br /> ground tanks , since other typical volatile constituents of <br /> gasoline were not detected in soil samples . The source of <br /> toluene in soil sa-nples cannot be identified from the in <br /> obtained Lrom this investicrtion . -oluene may have <br /> been introduced in soil sam ples -Fran use of erL c=G2s at <br /> t'-e site prior to pavine , or from pr. evicus use of toluene as <br /> that Reynolds and <br /> a solvent at the facility. die tett-,-•end <br /> B=onn investicate the past uses ( if any) a° toluene at the <br /> facility. Ho•,,:e:7er , :,e note that concent_3ticns of toluene <br />