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' SIERRA LABORATORIES INC <br /> I <br /> Park Environmental Corporation Sierra Client No 10000-92 Date Sampled. 091992 <br /> i <br /> 2140 Professional Drive,Suste 130 Sierra Project Nio SP-310-92 Date Received- 1QIDil92 <br /> ' Roseville,California 95661 Client Project Yo. 11.5 II Date Prepared 10101-10/06/92 <br /> s <br /> Client Project. Date Analyzed- 10/01-10/06 <br /> NIA <br /> ' Sample Preparation. FPA Method 5030 Sample Analysts 8015-M as Gasoline Report Date .10109192 <br /> ' Matrix/Spike Duplicate Report <br /> Sample Type Solid <br /> ' TPH Gasoline (Range) <br /> ' Matrix Spike 109 (50.150) <br /> Recovery(%) <br /> Matrix Spike Duplicate 105 (50-150) <br /> Recovery(%) <br /> Relative Per-cent 3 (0-30) <br /> Dtfference <br /> 1 <br /> Quality Control Reference Number G002-100192(S)g2a0011-037-038 <br /> I <br /> 1 <br />