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S E C ® R <br /> . Conceptual Site Model RS <br /> March 24, 2004 <br /> Page 6 <br /> ,v <br /> grease (TOG) During field activities conducted in March of 1995, groundwater was first <br /> encountered between approximately 30 feet bgs and 35 feet bgs <br /> s <br /> MW-1 Soil samples collected from 5 feet bgs to 35 feet bgs were submitted for chemical <br /> analysis in MW-1 Analytical results for MW-1 indicated concentrations for all analytes were ; <br /> below laboratory reporting limits in all samples submitted with the exception of benzene <br /> reported at a concentration of 0 034 mg/kg (25 feet bgs) y <br /> MW-2 Soil samples were collected from 15 feet bgs, 30 feet bgs, and 35 feet bgs in MW-2 <br /> Analytical results for soil samples collected from MW-2 were reported below laboratory <br /> reporting limits for all analytes <br /> MW-3 Soil samples collected from 10 feet bgs to 35 feet bgs were submitted for chemical a <br /> analysis in MW-3 Analytical results for MW-,3 from 25 feet bgs to 35 feet bgs reported <br /> benzene, toluene, ethyl-benzene, and total xylenes (BTEX) and TPHg ranging from 0 011 <br /> mg/kgte4imee at 25 feet bgs)to 250 mg/kg (TPHg at 35 feet bgs), respectively \y <br /> k <br /> SB-1 Soil samples collected from 10 feet bgs to 35 feet bgs were submitted for chemical <br /> analysis Petroleum hydrocarbons were detected in samples collected from 20 feet bgs to <br /> 35 feet bgs ranging from 0 015 mg/kg (benzene at 20 feet bgs)to 28 mg/kg (TPHg at 35 feet 4 <br /> bgs) <br /> 41.2 September 1996, USTs, Hydraulic Hoists, Product Dispensers, and Product Lines <br /> Removal <br /> During the excavation and removal of USTs, hydraulic hoists, product dispensers, associated <br /> product lines and limited over-excavation sidewall and bottom soil samples were collected Select <br /> sod samples were analyzed for petroleum hydrocarbons <br /> 4 1.2 1 UST Excavation and Over-Excavation Soil Analytical Results <br /> Soil samples were collected from beneath the USTs (T1 through T6) at approximately 15 feet bgs, <br /> excavation sidewall (TXS1 through TXS6) ranging from approximately 14 feet bgs to 16 feet bgs, <br /> excavation bottom (TXB1, TXB2, and TX133) at 17 feet bgs and 18 feet bgs Soil samples collected <br /> in the vicinity of the USTs indicated the presence of petroleum hydrocarbons at low levels Soil <br /> beneath the site along the western property boundary was not delineated laterally and vertically <br /> 4 12 2 Product Dispenser Soil Analytical Results <br /> Soil samples collected adjacent to the former dispenser islands and product lines (P1 through P7) <br /> ranged from approximately 1 5 feet bgs. to 4 5 feet bgs, dispenser islands and product line over- <br /> excavation sidewall (PXS1, PXS2, and PXS3) samples were collected at approximately 5 feet bgs <br /> and 6 feet bgs, and dispenser island and product line excavation bottom (PXB1 through PX137) sod <br /> samples were collected at 6 feet bgs and 7 feet bgs Soil samples collected in the vicinity of the <br /> former dispenser islands and product lines indicated the presence of petroleum hydrocarbons above <br /> laboratory reporting limits, with the exception of P2 Dispenser island and product line over- <br /> excavation samples indicated the presence of petroleum hydrocarbons above laboratory reporting <br /> I1Clicvro(i19203.i1REPC)PTSICSMICSM 92033 (REV B) doc <br />