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SEQUOIA ANALYTICAL—SAC . 9169210100 P. 04 <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 * Sacramento, CA 95834 <br /> (915) 921.9600 • FAX (916) 921-0100 <br /> �.,".' ".e'."w 4 ..'�..'`'v'e il'L""'.e'�y,».•"'3^f�'4^-e +�-�-..-. »y'a�•;e v2yd,�:..-o"""'>� �e ",.�1' 'S '�h^i"�w,...."� ' ,.."$T^'..�J..•»a.7 x.`�3{'ds'.°j�R .R.',n <br /> Regis n ronmesrltal Consultants Gleet 1�ro e , 4 i l3o a Ali , Stocfiion <br /> s 1050 Melody Lane, Ste 160 Matroc Water <br /> Roseville, CA 95678 <br /> r Attention Paul Graff QC Sample Goup 304-0844 Reported May 4, 1993 x <br /> ri.°,�`.:."��" �4�+e�*•roes:e."`i..�'*.'�'�":aA"�"•.'�.e7.S �s.i.i5:e.w��N�*3+:[ 5 ��.a,.•,.%�`.". awsro>""S`L..,...�� .. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 602 EPA 602 EPA 602 EPA 602 <br /> Analyst: Chiaravaiioti Chlaravallott Chiaravaliatl Chiaravallotl <br /> Concentration <br /> Spiked. 10 10 10 10 <br /> LCS Batch#: LCSO43093 LCSO43093 LCSO43093 LCSO43093 <br /> Date Prepared. 4/30/93 4/30/93 4/30/93 4/30/93 <br /> Data Arialyzed: 4/30/93 4/30/93 4/30/93 4/30/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 <br /> LCS% <br /> Recovery: 94 95 91 101 <br /> Corltroo umitz; 80-120 $8-120 80.120 80.120 <br /> a e r e �,•A.4.k a. v r i �s ,�a.q.�^,ia r'> f`• k 4'�sfN: <br /> �taa4l.f,�1C� '•oQ'!�?r--��44.4�•4.v yNY.VK".�Q.9.JR 'n�Y{,��s�MLNn!�u� ���'�,i��'�' MFtr .� �•p �y .per{ w•ad.ufyN61 ' ��L <br /> MS/MSD 15 <br /> Batch#: 3040878 3040870 3040878 3040878 <br /> Date Prepared: 4/30/93 4/30/83 4/30/93 4/30/93 <br /> Date Analyzed: 4/30/93 4/30/93 4/30/93 4/30/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 <br /> Matrix Spike <br /> °%Recovery: as as 89 80 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 83 97 96 90 <br /> Relative% <br /> Difference. 90 13 7 6 12 <br /> 10 SEOUDIA ANALYTICAL Please Note <br /> The LCS Is a control sample of known,interferent free matnx that is analyzed using the same reagents, <br /> r !�r} , ` 6muncLcuk. <br /> preparation and analytical me:hods employed for the samples The LCS%recoverydataisused for <br /> X11V c� validation of sample batch results Due to matrix effects,the OC limas for MS/MSD's are adwscry only <br /> Wendy Amundsen land are not used to accept or reject batch results <br /> Laboratory0lrector 3040544 AEG K2> <br />