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1 <br /> SIERRA I-A$ RATOMES ING <br /> 1 <br /> Park Environmental Corporation Sierra Client No I0000-92 Date Sampled: 0989/92 <br /> 2140 Professional Drive,Suite 130 Sierra Project No SP-310.92 Date Received- 1016t/92 <br /> ' Roseville,California 95661 Client Project No. 1125.11 Date Prepared- IOMI-10/06192 <br /> Cllent.Project. Date Analyzed- 10101-10106 <br /> NIA <br /> Sample Preparatlan. EPA Method$030 f <br /> ' Sample Analysis EPA 8020(BTEX) Report Date. .10109192 <br /> ' Matrix/Spike Duplicate Report <br /> Sample Type Liquid <br /> Benzene Toluene Ethylbenzene Xylenes,Total <br /> (Rangel (Range) (Range) (Range) <br /> Matrix Spike 54 61 60 60 <br /> ' Recovery(%) (39-150) (46.148) (32.160) (37-154) + <br /> Matrix Spike Duplicate 49 58 58 58 <br /> Recovery(%) (39-150) (46.148) (32-160) (37-154) <br /> Relative Per-cent 10 6 4 5 <br /> Difference (0-30) (0-30) (0-30) (0-30) <br /> QualLty Control Reference Number G002-100192(L)g2a0011.W-049 <br /> 1 <br />