ARCHIVED REPORTS XR0001845 - Laserfiche WebLink

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i� Table 2 Tabulation of Soil Boring and Monitoring Well Details Soil Boring or Date Total Drilling Method and Rationale for Summary Monitoring Well Drilled Depth Placement feet bgs) SB 5 08/29/03 165 Hollow stem auger placed to evaluate vertical Soil Boring iermnuited at 16 feet bgs due to contammavon in former UST pit refusal Stgmficant volume of tuned concrete encountered SB 6 08/29/03 515 Hollow stem auger inclined boring to north,under fanner Boring is 42 degrees on inclination Total western dispenser upgradient of UST location depth penetrated is 38 1 feet bgs Significant TPH soil contamination under dispensers to total depth of bong SB 7 08P19103 51 5 Hollow stem auger inclined baring to north,under former Boring is 42 degrees on mdmation Tota[ eastern dispenser upgradient of UST location depth penetrated is 38 2 feet bgs Significant TPH soil contamination under dispensers to total depth of bong SB 8 09102/03 Sl 5 Hollow stem auger upgradient ofUST location,confinns Minor soil petroleum contamination in 30 northern extent of TPH contamination in sail to 46 5 bgs of soil section Groundwater grab sample reported significant concentrations of BTE7�TPH g MTBE and 1 2 DCA SB 9 09MO3 51 5 Hallow stem auger cross or downgradient of UST location, M nor sod petroleum contamination with confirms horizontal extent idermficatton of soil contamination TPH gas and constituents from 30 to 46 5 bgs Groundwater grab sample reported significant concentrations of BTEX and TPH g No MTBE or 1 2 DCA present in groundwater grab sample SB 10 09/03/03 51 5 Hollow stem anger cross or upgradient of UST location, Minor sod petroleum contamination with confirms hanzOnW extent identification of sod contarnmatiou TPH gas from 30 to 46 5 bgs kbnor concentrations of oxygenate compounds at 46 5 bgs Groundwater grab sample reported significant conixntrations of RTF-3, TPH g,and lead scavengers No oxygenates present in groundwater grab sample SB I I(Offset from MW 1) 09/03/03 51 5 Hollow stem auger cross or downgradient from MW 1 No soil petroleum hydrocarbon identification of eastern horizontal extent of soil contamination contamination encountered until 41 5 bgs Sod petroleum hydrocarbon contamination increases from background to significant concentrations from 31 5 to 46 5 bgs Very strong petroleum odor at base of hole Sample from 51 5 bgs not recovered Good chance of continued vertical extent of petroleum hydrocarbon compounds in soil SB 12 09/04/03 51 5 Hollow stem auger upgradtent of UST location identification All soil sample analytical data is ND of horizontal extent of sod contanunanan Boring indicates that soil contaminant mass is south of location Maut\D 1EnwonmeWalTwmuTexacolRgxnUs SAR 1203 wpd