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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater,CA 95301 Phone: (209)3842930 <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; 10-26-11 <br /> Attn:Michael Vlach Sample Description:Soil Analyzed: 10-26-11 <br /> Analyst: Clari Cone Reported: 10-28-11 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID: VSMS-0261 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> mg/Kgmg/Kg m IK mg/K %R <br /> COMPOUNDS <br /> t-Bu! I Alcohol(t-BAJ 0.80 ND k 3.0 122% 55.3-153 <br /> Meth t-butyl ether MTBE 0.010 ND E 0.10 106% 60.4-137 <br /> Diiso ra I ether DIPE 0.010 ND f 0.10 100% 70.0-130 <br /> Ethyl t-Butyl ether ETBE) 0.010 ND 0.10 97.2% 70.0-130 <br /> t-Am I methyl ether TAME 0.010 ND 0.10 102% 70.0-130 <br /> 1,2-Dichloroethane 1,2-DCA 0.010 ND 0.10 103% 63.6-138 <br /> Ethylene dibromide EDB 0.010 ND E 0.10 104% 66.7-129 <br /> Surro aces: <br /> 1,2-Dichloroethane-d4 0.040 107% I 0.40 112% 59.2-135 <br /> Toluene-d8 0.040 95.2% 0.40 95.8% 62.9-132 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> m /Kg %R %R <br /> COMPOUNDS <br /> t-Butyl Alcohol(t-BA) 3.0 108% 124% 55.3-153 13.5% <br /> Methyl t-butyl ether MTBE 0.10 108% 112% 60.4-137 3.12% <br /> Diiso ro I ether DIPE 0.10 105% E 111% 70.0-130 5.33% <br /> Ethyl t-Butyl ether(ETHE) 0.10 98.8% G 108% .70.0-130 8.50% <br /> t-Am I meth I ether TAME 0.10 102% 110% 70.0-130 7.07% <br /> 1,2-Dichloroethane 1,2-DCA 0.10 103% 108% 63.8-138 4.36%n <br /> Ethylene dibromide EDB 0.10 90.8% E 99.6% 66.7-129 8.76% <br /> Surrogate: <br /> 1,2-Dichloroethane-d4 0.40 108% f 114% 59.2-135 5.49% <br /> Toluene-d8 0.40 93.8% 94.5% 62.9-132 0.743% <br /> The LC8(Lutioratory Chock Sampla)is a control anmple of known,interferent free 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 MSIM�SD's are advisory only and are not used to accept or <br /> reject batch results. <br /> APPROVED BY: <br /> Jam C. as/L boraforyDirector or <br /> ClariJ. Cone/L.0b9fatoryManagar <br />