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1 <br /> ' SIERRA LABORATORIES INC <br /> 1 � <br /> Park Environmental Corporation Sierra Client No 10000-92 Date Sampled. 09/15/93 <br /> ' 4231 Pacific Street,Suite 7 Sierra Project No SP-775 93 Date Received 09117/93 <br /> Rocklin,California 95677 Client Project No 5007 J3 Date Prepared 09/28/93 <br /> i <br /> Client Project, Date Analyzed 0988193 <br /> ' USA 110 i <br /> Sample Preparatlon. EPA Method 5030 i <br /> Sample Analysis, EPA 8020(BTEX) Report Date. .69f30/93 <br /> 1 <br /> Matrix/Spike Duplicate Report <br /> ' Sample Type Liquid <br /> Benzene Toluene lth)IbEnxine Xylenes,Total <br /> (Range) (Range) (R11gL) (Raoge)i <br /> ' Matrix Spike 70 83 74 75 <br /> Recovery(%) (39-150) (46 148) (32 16u) (37 154) <br /> ' Matrix Spike Duplicate 76 87 80 82 <br /> Recovery 1%) (39-150) (46-148) (32-160) (37-154) <br /> Relative Per-cent 9 5 8 9 <br /> Difference (0-30) (0 30) (0-30) (0-30) <br /> Quality Control Reference Number G001-092893-glb00022 15I 152 <br /> 1 <br /> i 1 <br />