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M(MBRIE <br /> on <br /> LABORATORIES INC <br /> QC Surr>,mallyy <br /> 1 <br /> Client Hydro Environmental Technologies <br />' Project Central Califomia Traction Co Matrix soil <br /> Method 8260 9,9-DCE Benzene TCE Toluene CI-Benz <br />' Recovery % QC Limits (60-120) (60-120) (60-120) (60-120) (60-120) <br /> RPD- % QC Limits <30 <30 <30 <30 <30 <br />' Date Analyzed 7119100 <br /> Spike Level (ug/kg) 500 500 500 500 50 0 <br /> Sample Amount 00 00 00 00 00 <br />' MS Amount Found 431 509 461 503 533 <br /> MSD Amount Found 472 523 482 52 0 569 <br />' MS Recovery 861 101 9 923 1006 1066 <br /> MSD Recovery 943 1046 964 1039 1139 <br /> RPD- % 91 26 43 32 66 <br />' Date Analyzed 7/20100 <br /> Spike Level (ug/kg) 500 500 500 500 500 <br /> Sample Amount 00 00 00 00 0 0 <br /> MS 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 1035 <br /> MSD Recovery 943 1049 995 1068 1119 <br />' RPD- % 11 9 55 77 57 77 <br /> Date Analyzed 7120100 <br />' Spike Level (ug/kg) 500 500 500 500 500 <br /> Sample Amount 00 00 00 00 00 <br /> MS Amount Found 550 4112 4116 467 4411 <br />' MSD Amount Found 538 508 51 7 501 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 /> i <br /> TEG071800 <br />' Page 6 of 8 <br /> 148 SO VINEWOOD STREET e ESCONDIDO CA 92029 e PHONE (7601 735 3205 e FAX (760) 735-2469 <br />