ARCHIVED REPORTS_XR0002991 - Laserfiche WebLink

Home Browse Search

1• TABLE 2 Fuel Oxygenates Analytical Data • ARCO Service Station No. 548 1612 Hammer Lane, Stockton, California Well TBA MtBE DIPE ETBE TAME 1,2-DCA Ethanol Number Date pg/L pg/L pg/L Eig/L pg/L _Ng/L N L VW-5D 12/13/2001 <50[3] 67[3] <5.0[3] <5.0[3] <5.0[3] 83[3] NA 3/12/2002 890 <2.5[3] <2.5[3] <2.5[3] <2.5[3] <2.5[3] NA 9/9/2002 290 <5 <5 <5 <5 <5 NA 12/4/2002 <4,000 <100 <100 <100 <100 <100 NA 3/3/2003 <200 <5 <5 <5 <5 <5 <1000(a) 6/3/2003 <40 <1.0 <2.0 <2.0 <2.0 <1.0 <200 9/18/2003 Not Sampled 12/8/2003 Not Sampled Notes: O)iygenates analyzed by USEPA Method 8260. < <=Below detection limit for analytical methods used. (a) (a)5/23/03 Revised analytical report replaces the 3126103 report to correct the reporting limit for Ethanol from 40 ug/L to 100 ug/L. 1,2-DCA 1,2-DCA=1,2-Dichloroethane DIPE DIPE=Di-isopropyl ether. EtBE ETRE=Ethyl Tert butyl ether. MtBE MtBE=Methyl tort-butyl ether. mg1L mglL=micrograms per liter. NA NA=not analyzed. TAME TAME=Tert amyl methyl ether. TBA TBA=Teri butyl alcohol. [1]This sample was analyzed outside EPA recommended holding time. 12]The opening calibration verification standard was outside acceptance limits by<30/6. Although the Lab Control Sample verified the accuracy of this batch,this should be considered in evaluating the data for its intended purpose. [3]The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits. [4]The sample was diluted due to the presence of high levels of target analytes resulting in elevated reporting limits. Beginning third quarter 2002,the data quality analyses are presented in the text. Data Qualifier Definitions: U The analyte was analyzed for,but was not detected above the sample reporting limit. J The analyte was positively identified;the associated numerical value is the approximate concentration of the analyte in the sample. N The analysis indicates the presence of an analyte for which there is presumptive evidence to make a"tentative identification." NJ The analysis indicates the presence of an analyte that has been`tentatively identified'and the associated numerical value represents its approximate concentration. UJ The analyte was not detected above the reported sample reporting limit. However,the reported reporting limit is approximate and may or may not represent the actual limit of quantitation necessary to accurately and precisely measure the analyte in the sample. R The sample results are rejected due to identification or other analytical issues. ND Not detected above reported detection limit K:IWprocessW5 BP ARC01005481Quarterlyl4 QTR 0410548 OMR 4003 Page 4 014