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Page 1 of 1 <br /> Table 4 <br /> Domestic Well Analytical Data <br /> ARCO Service Station#595 <br /> 6100 N Highway 99,Stockton,CA <br /> Ethyl- Xylenes <br /> Well Date TPHg Benzene Toluene benzene (total) MtBE <br /> Number Sampled (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> DW-1 2/1/2002 <50 <0 50 <0 50 <0 50 <0 50 <2 5<0 50 <br /> 4/11/2002 -----------Not Sampled----------_--___—___ <br /> 7/16/2002 -----Not Sampled-------------_--____—_ <br /> 10/2/2002 ------------ -----Not Sampled--------------------- <br /> 1/17/2003 -------------------------------Not Sampled- <br /> 4/4/2003 <br /> ampled-4/4/2003 ---------------Not Sampled <br /> 7/22/2003 -------- ------Not Sampled----- <br /> 10/1/2003 -- --- Not Sampled---- <br /> 1/7/2004 – --- ---------------Not Sampled---- -- <br /> 41212004 Not Sampled--------------— <br /> DW-2 2/1/2002 <50 <0 50 <0 50 <0 50 <0 50 <2 51<0 50 <br /> 4/11/2002 <50 <0 50 <0 50 <0 50 <0 50 <2 51<0 50 <br /> 7/16/2002 <50 <0 50 <0 50 <0 50 <0 50 <2 51<O 50 <br /> 10/2/2002 <50 <0 50 <0 50 <0 50 <0 50 <2 51<O 50 <br /> 1/17/2003 <50 <0 50 <0 50 <0 50 <0 50 <2 5/<O 50 <br /> . 4/4/2003 <50 <0 50 <0 50 <0 50 <0 50 –<0 50 <br /> 7/22/2003 <50 <0 50 <0 50 <0 50 <0 50 --<O 50 <br /> 117/2004 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 412/2004 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tert-butyl ether by EPA Method 8020/8260 <br /> DW=Domestic Well <br /> ppb=parts per billion <br /> <=below given laboratory detection limit <br /> (a)Samples analyzed past hold time,results may still be used for their intended purpose <br /> (b)Laboratory reports sample result with a possible high bias due to the continuing calibration verification <br /> falling outside acceptance criteria <br /> ProjectslARCO15951ReportslTables12004-gwtables595-DW1 and DW-2 As <br />