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------------------ <br /> f <br /> Sequoia �'T: 680 Chesapeake Deva Redwood C1ty,GAS (41S) 164.9600 FAX(4111)164.9288 <br /> 404 N.W flet Lane Wdnut Creek,CA 94598 (310) 988-9600 FAX(510)988.9671 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,G 95814 (916) 921.9600 FAX(916)921.0100 <br /> + : e,�\~,�\\\��.����ti\\\\����.��::���; <iir.���: , : •�;�r: �:�:���iiirYr<r f� \\\\\��.�f �\\��•r�ffiriw: ;�:�r-•:�:<:�f��rJ�r, �: �iJifyHif.�iiJ�i�: ,n�iJ��i,��; <br /> eo' trate as ants G Tent roject f' �AL, osc0. 1 <br /> 3164 Gold Camp Dr., Suite 240 Matrix: Sop <br /> Rancho Cordova, CA 95670 <br /> Attention. Greg Gurss DC Sample Group 7050335-0336 Reported: May 21, 1997:[., <br /> \:'•..f.;:n;�:.�:;:i:.r F:.w.r::rl.�r.s:?'Y l /+r i:\•:•:•;:%: :/;: <br /> Sy.:::.:....:::...... .v:::.:, .., :,•:++. •::...::r::..w:+ :rr:•r•m•r•::::::.�:::.::.:�::.:::::.;?;rr:r.y};::r.r{:.r;•;'{SCt:??'+4:i•%?: :•kk ti \:if�'+:�. --:..... ........ .: :.:....:./ //:r:....,.../ -:.... <br /> .,r r +• / .,,,M;g;`.t\:.?;}s. \.�\�..., rr,r h f.:: //r.. ?' ...\\\\� \\ '..r:}`-.. .....--, / /J////./ rr„ <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 2,4-Dinitro- Ponta- <br /> Acenaphthene 4-Nitrophenol toluene chlorophenol Pyrene <br /> Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst: 1. Dalvand I. Dalvand I.Dalvand I.Dalvand 1.Dalvand <br /> Concentration <br /> Spiked: 2500 ug/kg 5000 ug/kg 2500 ug/kg 5000 ug/kg 2500 ug/kg <br /> LCS Batch#: LCS051997 LCS051997 LCS051997 LOS051997 LCS051997 <br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Instrument I.D.#: GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> LCS % <br /> Recovery: 92 88 88 116 108 <br /> 3 Control Limits: 31-137 11-114 28-89 17-109 35-142 <br /> M........... <br /> :Q�•::.k};..: <br /> .............i <br /> -: is.;:.:' <br /> MS/MSD <br /> Batch #: 7050421 7050421 7050421 7050421 7050421 <br /> Date Prepared: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/19/97 05/19/97 05/19/97 05/19/97 05/19/97 <br /> Instrument LD.#: GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> Matrix Spike <br /> % Recovery: 96 74 92 95 116 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 108 84 96 100 120 <br /> Relative % <br /> Difference: 12 13 4.3 2.0 3.4 <br /> SEQUOIA ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> M. FR.1C.ip, o preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> ' Edana M. Fruciano and are not used to accept or reject batch results. <br /> Project Manager/Sacramento Labora ory Page 2 of 2 <br /> 7050335.GSI <18> <br /> n°D+� <br />