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0 0 <br />Page 13 of 24 <br />Bab <br />alscience <br />nvironmental Quality Control - LCS/LCS Duplicate <br />rw aboratories, Inc. <br />Conestoga -Rovers & Associates Date Received: N/A <br />19449 Riverside Drive, Suite 230 Work Order No: 08-04-2322 <br />Sonoma, CA 95476-6955 Preparation: EPA 3050B <br />Method: EPA 60108 <br />Project: 3515 Navy Drive, Stockton, CA <br />Date Date LCS/LCSD Batch <br />Quality Control Sample ID Matrix Instrument rinpaicu •••�•,•------- <br />..a-, nI nnl In v74 Solid ICP 5300 05103108 05/04/08 080503L06 <br />RPD- Relative Percent Difference, CL - Control Limit <br />7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />LCS %REC <br />LCSD %REC <br />%REC CL <br />RPD <br />RPD CL Qualifiers <br />Parameter <br />110 <br />110 <br />80-120 <br />0 <br />0-20 <br />Antimony <br />92 <br />80-120 <br />3 <br />0-20 <br />Arsenic <br />95 <br />108 <br />108 <br />80-120 <br />1 <br />0-20 <br />Barium <br />101 <br />101 <br />80-120 <br />0 <br />0-20 <br />Beryllium <br />108 <br />80-120 <br />0 <br />0-20 <br />Cadmium <br />108 <br />104 <br />80-120 <br />0 <br />0-20 <br />Chromium <br />104 <br />109 <br />80-120 <br />0 <br />0-20 <br />Cobalt <br />108 <br />105 <br />80-120 <br />-1 <br />0-20 - <br />Copper - - <br />105 <br />117 <br />80-120 <br />2 <br />0-20 <br />Lead <br />120 <br />105 <br />80-120 <br />1 <br />0-20 <br />Molybdenum <br />106 <br />80-120 <br />0 <br />0-20 <br />113 <br />113 <br />Nickel <br />101 <br />100 <br />80-120 <br />1 <br />0-20 <br />Selenium <br />101 <br />101 <br />80-120 <br />0 <br />0-20 <br />Silver <br />104 <br />103 <br />80-120 <br />1 <br />0-20 <br />Thallium <br />102 <br />102 <br />80-120 <br />0 <br />0-20 <br />Vanadium <br />108 <br />108 <br />80-120 <br />0 <br />0-20 <br />Zinc <br />RPD- Relative Percent Difference, CL - Control Limit <br />7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />