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' D-TEK Analytical Laboratories,Inc. <br /> 9020 Keatamor Derive,Suite 205 <br /> San Diego,CA 92121 <br /> 858 966AS40 FAX 858 566-4342 <br /> ' QUALITY CONTROL DATA REPORT <br /> Date: 10/28/05 <br /> ' Alm, Mr. Greg Ttjlrian <br /> Date Extracted: 10/19/05 <br /> Date Analyzed: October 20,2005 <br /> ' Analysis Method: ERA 8141A <br /> Log#: 05-4760 to 054763 <br /> Method Blank <br /> No target analytes were detected in the method blank. <br /> Laboratory Control Sam le <br /> Compound 'QC DUP RPD <br /> % Recovery Limits %Recovery %R.PD Limits <br /> ' Diazinon 110 40-130 103 7 30 <br /> Methyl Parathion 110 40-130 105 5 30 <br /> Dursban(Chlatpyrifos) 124 40-130 109 13 30 <br /> Gardona(Stirophos) 94 40-130 84 11 30 <br /> ' SURROGATE RECOVERIES <br /> (Tributylphosphate) <br /> 1 Log# ]Percent Recovery: <br /> Method Blank 76 <br /> 05-4760 80 <br /> 05-4761 64 <br /> ' 05-4762 62 <br /> 05-4763 60 <br /> LCS 96 <br /> 1.CS Dap 90 <br /> n <br /> ' QC limits: 50 to 170% <br /> Ellen Atienza <br /> operations Manager <br /> 01)A[-IIY CONTROL'LCMIROLDGY <br /> I.CS-LABORATORY CONTROL SAKI PI.c. Reported as %recovery of an independent standard vur led thrnugh all sarrtplc <br /> preparation prneedurm to verify mcihnd performance.Acceptable range is based nn historical labowM ennuul data and FPA <br /> ' requirements. Any out-ofaunlwl QC.data is clawfly indicated. <br /> Spike-envirunmenlal sampic is matrix spiked with method cumpounds and site rcwrtlly of conccntr�r�oa spiked into sstrrple is <br /> cahculattd• Reported us 16 recovery. Acceptable range rcir •'Nornni Matrix Camped'is based an historical laboratory control d.ta. <br /> Any uut-of-eontrel Qu data is cicsrly indicated. <br /> ' Surralgatca-C4"'pounds rcM5cn1a1ive Of It Smupuf cutrtpoundx. surrugales arc slriked+ntu environmental samples and%T,ecnvcry <br /> of eoneerttration spiked is calculated and teponcd. Acceptable range varies dq=ding on sample matrix and analysis melhod. Any <br /> Out-of•coniml%,X'dao is clesrly indicatod. <br /> Page 1 <br />