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m(061tv <br /> orae <br /> LAE30RATORIES WC <br /> QC Summary <br /> Client Hydro Environmental Technologies <br /> Project Central California Traction Co Matrix soil <br /> Method 8264 '1,1-DCE Benzene TCE Toluene Cl-Benz <br /> Recovery% QC Limits 60-120) (60-120) (60-120) (60-120) (60-120) <br /> RPD-% QC Limas <30 <30 <30 <30 <30 <br /> Date Analyzed 7119100 <br /> Spike Level (ug/kg) 500 500 500 500 500 <br /> Sample Amount 00 00 00 00 00 <br /> MS Amount Found 431 509 461 503 533 <br /> MSD Amount Found 472 523 482 520 569 <br /> MS Recovery 861 1019 923 1006 1066 <br /> MSD Recovery 94 3 1046 964 103 9 1139 <br /> RPD-% 91 26 43 32 66 <br /> Date Anal ed 7120100 <br /> Spike Level (ug/kg) 500 500 500 500 500 <br /> Sample Amount 00 00 00 00 00 <br /> ARS Amount Found 41 8 496 460 504 51 8 <br /> MSD Amount Found 471 525 497 534 559 <br /> MS Recovery 837 993 921 1008 1036 <br /> MSD Recovery 943 104 9 995 106 8 1119 <br /> RPD- % 119 55 77 57 77 <br /> Date Anal _ed 7120/00 <br /> Spike Level (ug/kg) 500 500 500 500 500 <br /> Sample Amount 00 00 00 00 00 <br /> MS Amount Found 550 482 496 467 448 <br /> MSD Amount Found 538 508 517 501 51 0 <br /> MS Recovery 1100 964 992 934 896 <br /> MSD Recovery 1076 1016 1034 1002 1020 <br /> RPD - % 22 53 41 70 129 <br /> Calibration verification was within acceptable limits <br /> TEGO71800 <br /> Page 6 of 8 <br /> 148 SO VINEWOOD STREET o ESCONDIDO CA 92029 PHONE (760) 735-3208 o FAX (760) 735-2469 <br />