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s <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone: (209)384-2930 <br /> Certificate No.2480 Fax: (209)384-1507 <br /> Foothill Engineering Client Project Number:2064 Method:EPA 5030/82608 <br /> 8442 Story Ridge Way Client Project Name:Vogue Cleaners-Stockton Instrument ID:VARIAN MS <br /> Antelope,CA 95843 Lab Reference Number:1110095 Prepared: 10-25-11 <br /> Attn:Mike Vlach Sample Description:Water Analyzed: 10-25-11 <br /> Reported: 10-28-11 <br /> QUALITY CONTROL DATA REPORT <br /> V WMS-0251 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> IL p L /L %R <br /> COMPOUNDS <br /> t-Bu I Alcohol(t-BA) 20 ND { 75 93.1% 27,2-178.4 <br /> Methyl 1-butyl ether MTBE 0.50 ND f 2.5 99.2% 59,7-153.0 <br /> Diiso ro I ether DIPS 0,50 ND t 2.5 95.2% 72,1-129,6 <br /> Ethyl t-Butyl ether ETBE 0.50 ND l 2.5 94.0% 68.1-130,8 <br /> t-Am I methyl ether TAME 0.50 ND f 2.5 100°% 60.2-137A <br /> 1,2-Dichloroethane 1,2-DCA 0.50 ND f 2.5 94.4% 91.2-137.6 <br /> Ethylene dibromide EDB 0.50 ND 2.5 94.8% 69.5-128,9 <br /> Surrogates: <br /> 1,2-131chloroethane-d4 1.0 103% k 10 104% 81.7-12 .4 <br /> Toluene-d8 1,0 98.4% [ 10 97.5% 90.3-112.6 <br /> Spiking MATRIXMATRIX %R °%RPD <br /> Level SPIKE SPIKE DUP Limits <br /> IL %R %R <br /> COMPOUNDS E <br /> t-But I Alcoholft-BA) 75 88.6% f 92.5% 45.1-151.2 4.19% <br /> Meth I t-bu I ether MTBE 2.5 97.6% f 95.6% 70.9-144.1 1.64% <br /> Diiso ro 1 ether DIPS 2.5 102% f 101% 73.6-126.5 0.787% <br /> Ethyl t-Butyl ether ETBE 2.5 91.2% 91.2% 74.8-128.1 0.00% <br /> t-Am I methyl ether AME 2.5 95.2°% f 98.8% 62.5-118.6 3.71% <br /> 1,2-Dichloroethane 1,2-DCA 2.5 96.4°% f 97.60/6 85.4-144.6 1.17% <br /> Ethylene dibromide EDB 2.5 95.2% { 96.0% 73.3-125.1 0.816% <br /> Surrogate; f <br /> 1,2-0ichloroethane-d4 10 104% f 103°% 80.2-126.9 0.965% <br /> Toluene-d8 10 100% [ 96.3% 82.6-114.9 4.17% <br /> The LOS(Laboratory Chock Sample)la a control sample of known,interrerent fre�matrix that is fortified with representative analytes and <br /> analyzed using the same reagents,preparation and analytical methods employed for�the samples. The LCS%recovery is used for validation <br /> of sample batch results. Due to matrix effects,the QC limits and recoveries for MSfMSD's are advisory only and are not used to accept or <br /> reject batch results. <br /> APPROVED BY: <br /> James C.Phiflips/ aboMtory Director or <br /> Clare J_ Cone/La ratory Manager <br />