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., Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 96W FAX(415) 364-9233 <br /> i' 404 N Wiget Larne Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9613 <br /> Analytical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> xlt v t d+r n` a .t "4'� `' w "1'tI w`t•'Y c~" ~r� n Ffs. <br /> ++] Jh Fn <br /> ugro West, Inc Y `r Client Project it) Shell,w420 West ifetdemaun .ane,Lodi, CA' <br /> w <br /> 1050 Melody Lane, Ste 160 Matra Soil <br /> Roseville, CA 95678 <br /> Attention Davld L Poulsen CSC Sample Group 508-0481 Reported Aug 21, 1995 <br /> ,r 4 Y•YY - w ti`�, ~!"Jµ � o lY~+]txs',.:ir� f rh�y„ +}t,fn � �t.�;��nM=,c nS~ L.� <br /> ♦ � ^ r ~3 .�A .v>♦.(t n «n f].~ 4f 4Y w...`]~ ~ ♦r....4]�.t� . ...]~ .�v � } ~�Y�.�r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst. C Chapman C Chapman C Chapman C Chapman <br /> Concentration <br /> Spiked: 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg <br /> LCS Batch#. LCS081595 LCSOB1595 LCS481595 LCSM595 <br /> Date Prepared: 8/15/95 8/15/95 8/15/95 8/15/95 <br /> Date Analyzed. 8/15/95 8/15/95 8/15/95 8/15/95 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS % <br /> Recovery. 111 112 110 104 <br /> Control Llrri(ts` 80-120 80-120 80-120 80.120 <br /> � � rr] .Yn„.vrt Y. .�h�.Vr< e5rw yn i�w � r,✓,•'"`�4 c'w.ra��,.~...,y�� �,...w.y N,,t ,,.�y., .e�.a�24..,.,��.x�{M1rr� ,w. �yr.4,.�� <br /> ` •vv} +r, n ��n✓✓~ v♦ v�r r rrG�dvv..er r vi+ n+ti ..r w ..vryC r { L)7,v...ev J rh i"r+n vw WY?f�.v2..n.w.rAr Y vtx vv avn ra?ram.•ry u,..vvC4w.v'-..�i�� vC{r n'�C k v <br /> MS/MSD <br /> Batch# BS081596 BS081595 BS081595 85081595 <br /> Date Prepared. 8/15/95 8/15/95 8/15/95 8/15/95 <br /> Date Analyzed. 8/15/95 8/15/95 8/15/95 8/15/95 <br /> instrument 1.1) #' GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> %Recovery. 140 100 95 92 <br /> Matnx Spike <br /> Duplicate % <br /> Recovery: 108 108 105 101 <br /> Relative % <br /> Difference. 77 77 10 9 3 <br /> QUOTA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matnx effects,the QC limits for MS/M80's are advisory only <br /> inda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 5080481 FUG c3> <br /> 63 <br />