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LABORATORIES, INC. <br /> Herst Associates Project: NCYC Reported: 03/03/2008 14:50 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: David Vasbinder <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID: 0802520m04 1 Client Sample Name: Well#4/CYA#4,2122/2008 8:00:OOAM <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units POO MDL Method Date Date/Time Analyst mentlD Dilution BatchlD Bias Quals <br /> t-Butyl alcohol ND ug/L 10 8.6 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 I BRB1714 ND <br /> .......................... ...........11-1—.-.............. ................... <br /> Carbon disulfide ND ug/L 1.0 0.40 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 I BRB1714 ND <br /> ...........---.......---—-------------------------—------------ .........----...................... <br /> trans-1,4-Dichloro-2-butene ND ug/L 5.0 2.0 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> ............... -------- ............. <br /> Diisopropyl ether ND ug/L 0.50 0.18 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> ........... - <br /> —--------- .............. ............ ................................ <br /> Ethanol ND ug/L 250 57 EPA-8260 02/27108 02/28/0816:36 MGC MS-V5 1 BRB1714 ND <br /> -------—---------- ----------............. <br /> Ethyl t-butyl ether ND ug/L 0.50 0.22 EPA-8260 02127/08 02128/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> -—---------------------- ........................... ........... .................. ........ <br /> 2-Hexanone ND ug/L 10 2.5 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> —-----—------------ ---------................—----------------------- <br /> Methyl ethyl ketone ND ug/L 10 1.6 EPA-8260 02/27/08 02128/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> —--------- ........................ <br /> Methyl iodide ND ug/L 2.0 0.42 EPA-8260 02127/08 02/28/08 18:36 MGC MS-V5 1 BRB1714 ND <br /> --—-------------- ---------- ---—------------------............ <br /> Methyl isobutyl ketone ND ug/L 10 3.4 EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 I BRB1714 ND <br /> -----....... ...............................-.............. <br /> Vinyl acetate ND ug/L 10 3.1 EPA-8260 02/27/08 02/28108 18:36 MGC MS-V5 I BRB1714 ND <br /> ..................................... ....... .......... ...... <br /> 1,2-Dichloroethane-d4(Surrogate) 106 % 76-114 (LCL-UCL) EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 I BRB1714 <br /> .......... —----------.11------------ ..................... <br /> Toluene-d8(Surrogate) 100 % 88-110 (LCL-UCL) EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 I BRB1714 <br /> —------------ ---------- .......... —---------------...................... <br /> 4-Bromofluorobenzene(Surrogate) 100 % 86-115 (LCL-UCL) EPA-8260 02/27/08 02/28/08 18:36 MGC MS-V5 1 1311131714 <br /> BC Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation, detachment or third party interpretation. Page 14 of 35 <br /> 4100 Atlas Court*Bakersfield,CA 93 308-(66 1)327-4911 -FAX(661)327-1918-www-bclabs.com <br />