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5 � <br /> Mr. Paul Fry�'"� s4"pe <br /> NWE Project 05-001500 <br /> July 31, 1998 <br /> Page 5 of 7 <br /> TABLE 2 <br /> Groundwater Sample Analytical Results <br /> 735 North Main Street,Manteca,CA <br /> (concentrations in micrograms per Liter[approximately equivalent to parts per billion]) <br /> Groundwater Date Depth TPHg' TPHm' BTEX' VOCs' MTBE' <br /> Sample Sample (feet <br /> Location Collected below <br /> grade) <br /> W-1 7/16/98 20 50 <100 <0.50 ND' <5.0 <br /> W-2 7/16/98 20 <50 <100 <0.50 ND <5.0 <br /> W-3 7/16/98 20 <50 <100 <0.50 ND — <5.0 <br /> TPHg' = Total petroleum hydrocarbons as gasoline. <br /> TPHm' = Total petroleum hydrocarbons as motor oil <br /> BTEX' = Benzene,toluene,ethylbenzene,and xylene. <br /> VOCs' = For a complete listing of volatile organic compounds analytes and <br /> detection limits,see attachment B. <br /> MTBE' = Methyl tevtiary butyl ether, <br /> ND = Not detected above laboratory detection limits. <br /> A. review of the analytical results of groundwater samples collected from the. <br /> subjeci Property indicates. <br /> • TPHg, TPHm, BTEX, 1!1'rBE, and VOCs were not deiec,ied bo <br /> groundwater samples collected at three selected locations on the s'ubiect <br /> Property. <br /> SUMMARY AND CONCLUSIONS <br /> NWE advanced three soil borings to a depth of 20 feet bgs at selected locations <br /> beneath the subject Property. Soil and groundwater samples were collected from <br /> each boring. Below the surface asphalt at the site, soil boring SB-1 (generally <br /> representative of site soil units) encountered brown, sandy loam, sandy clay, and <br /> minor gravel to a depth of 20 feet bgs. Groundwater was encountered at a depth <br /> of 20 feet bgs. Neither organic odors nor staining were detected in the soil <br /> samples collected from borings SB-1 through SB-3, with the exception of soil <br /> sample SB-313, which indicated a low level of organic vapors. <br /> Analysis of three soil samples collected at depths ranging from 5 to 20 feet below <br /> grade at the subject Property indicated no detectable concentrations of TPHg, <br /> TPHm, BTEX, MTBE, and VOCs. <br /> Analysis of three groundwater samples collected at a depth of 20 feet below grade <br /> at the subject Property indicated no detectable concentrations of TPHg; TPHm, <br /> BTEX, MTBE, and VOCs. <br />