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. , Report Number 40 <br /> QC Report Laboratory Control Sample(LCS) Date 12/19/2005 <br /> Project Name 7-Eleven Store #14117 <br /> Project Number 77EL.14117.05 <br /> LCS <br /> LCS Percent <br /> Spike Analysis Date Percent Recov <br /> Parameter Level Units Method Analyzed Recov Limit <br /> Benzene 400 ug/L EPA 8260E 12/15/05 945 70-130 <br /> Toluene 400 ug/L EPA 82608 12/15/05 99 8 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 12/15/05 988 70-130 <br /> Methyl-t-Butyl Ether 400 ug/L EPA 8260E 12/15/05 94 5 70-130 <br /> Benzene 400 ug/L EPA 8260B 12/17/05 976 70-130 <br /> Toluene 400 ug/L EPA 8260B 12/17/05 104 70-130 <br /> Tert-Butanol 200 uglL EPA 8260B 12/17/05 102 70-130 <br /> Methyl-t-Butyl Ether 400 ug/L EPA 8260B 12/17/05 960 70-130 <br /> Benzene 400 ug/L EPA 8260E 12/16/05 97 8 70-130 <br /> Toluene 400 ug/L EPA 8260B 12/16/05 100 70-130 <br /> Tert-Butanol 200 ug/L EPA 8260B 12/16105 94 2 70-130 <br /> Methyl-t-Butyl Ether 400 ug/L EPA 8260B 12/16/05 103 70-130 <br /> KIFF ANALYTICAL, LLC Approved By J4 KifF <br /> 11 <br /> *27gri 9nd St q,iitA nnn nnvic (-A QriAlR 5in-9W-ARnn <br />