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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415) 364-9600 FAX(415)364-9233 <br /> RESNA 4 Clienf Project ID W486-1, Pd&E Stockton Service Center f V h �ry x ry <br /> 1710 Main Street Matrix Sol[ <br /> Escalon, CA 95320 <br /> Attention Lois Frantz QC Sample Group 3C42201 Reported Mar 11, 1993 <br /> ,. x r M1 .. • .}+ c.+ xx ry ,.,.,. ,.wx rx Y.,ryr•v. t.t+ ,. ,. vov �.c'nr• ,•:�•� Y <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Total Extractable <br /> i <br /> Petroleum <br /> Hydrocarbons <br /> Method: EPA 8015 <br /> Analyst: C Lee <br /> Concentration <br /> Spiked. 15 <br /> LCS Batch#. DBLKo31os3ss <br /> Date Prepared: 3/10/93 <br /> Date Analyzed 3/10/93 <br /> Instrument LD #: GCHP-4[NJ A <br /> LCS% <br /> Recovery 80 <br /> Control Limits: 50-150 <br /> ..n .v.L» ♦rx4 r pt!}ti 6Y ]n 4�`..x vMi+}^'9r�'r ♦ L 06+v M1, n�.rfH+At-0L vbvh.v}�+n x r <br /> �Cvv♦ .-.-,. x. ♦ vl.R ....,.4,3+G�a+v AY+S. + .,.xo Y84.+] x. v rY v +uar +. eavx v .- ,..�i.J. .x. <br /> MS/MSD <br /> Batch#: D9303-030-01 ` <br /> Date Prepared: 3/9/93 <br /> Date Analyzed 3/9/93 <br /> Instrument I D#: GCHP-5 INJ B <br /> Matrix Spike <br /> %Recovery: 16 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 67 <br /> Relative% <br /> Difference: 29 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matnx that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data is used tar <br /> valiclationotsample batch results Due to matrix effects,the QC limits for MS/MSUs are advisory only <br /> proec /� and are not used to accept or reject batch results <br /> t <br /> e all, <br /> Manager 3c42201 WAT <a> <br />