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M(OBItE <br /> one <br /> LABORATORIES INC <br /> QC Summary <br /> Client Hydro Environmental Technologies <br /> Project Central California Traction Co Matrix soil <br /> Method 8260 1,1-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 X30 X30 <br /> Date Analyzed 7121100 <br /> Spike Level (ug/kg) Soo 500 Soo 500 Soo <br /> Sample Amount 00 00 00 00 00 <br /> MS Amount Found 460 515 510 512 539 <br /> MSD Amount Found 456 521 480 514 537 <br /> MS Recovery 920 1030 1020 1023 1079 <br /> MSD Recovery 91 3 1042 959 1028 1074 <br /> RPD-% 08 12 61 05 04 <br /> Date Analyzed 7/25/00 <br /> Spike Level (ug/kg) 500 500 500 50 0 500 <br /> Sample Amount 00 00 00 00 00 <br /> MS Amount Found 424 49 5 463 495 54 0 <br /> MSD Amount Found 403 493 460 477 51 0 <br /> ARS Recovery 84 8 990 926 989 1079 <br /> MSD Recovery 806 986 920 954 1019 <br /> RPD- % 50 04 06 36 57 <br /> Calibration venfication was within acceptable limits <br /> I <br /> TEG071$00 <br /> Page 7 of 8 <br /> 148 SO VINEWOOO STREET o ESCONDIDO CA 92029 a PHONE (760) 735-3208 FAX {760) 735-2469 <br />