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® = 111= ® M <br /> LABORATORIES, INC. <br /> Herst Associates Project: NCYC Reported: 03/20/2008 12:48 <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 /> Quality Control Repo recision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type Sample PD Result Result Added Units RPD Recove RPD Recovery Lab Quals <br /> Benzene BRC0903 Matrix Spike 0803471.18 0 29.640 25.000 ug/L 119 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 31.030 25.000 ug/L 4.1 124 20 70-130 <br /> ---- -..- ----- -------..--...- <br /> Bromodichloromethane BRC0903 Matrix Spike 0803471-18 0 30.510 25.000 ug/L 122 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 30.960 25.000 ug/L 1.6 124 20 70-130 <br /> -... - .....-- ._..._..__ <br /> Chlorobenzene BRC0903 Matrix Spike 0803471-18 0 30.370 25.000 ug/L 121 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 31.020 25.000 ug/L 2.4 124 20 70-130 <br /> Chloroethane BRC0903 Matrix Spike 0803471-18 0 30.380 25.000 ug/L 122 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 31.320 25.000 ug/L 2.4 125 20 70-130 <br /> _.._..- -.........- - - -... ----...- ...- ...._ ._... -.__-_...- -- _..- ... -._. ._. <br /> 1,4-Dichlorobenzene BRC0903 Matrix Spike 0803471-18 0 29.690 25.000 ug/L 119 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 30.490 25.000 ug/L 2.5 122 20 70-130 <br /> -_..__.........._._.. -_. __.._. _.-... -_..- ---- _.-... <br /> 1,1-Dichloroethane BRC0903 Matrix Spike 0803471-18 0 30.070 25.000 ug/L 120 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 31.380 25.000 ug/L 4-9 126 20 70-130 <br /> 1,1 Dichloroethene BRC0903 Matrix Spike 0803471-18 0 29.900 25.000 ug/L 120 70-130 <br /> Matrix Spike Duplicate0803471-18 0 30.980 25.000 ug/L 3.3 124 20 70-130 <br /> Toluene BRC0903 Matrix Spike 0803471-18 0 30.870 25.000 ug/L 123 70-130 <br /> Matrix Spike Duplicate 0803471-18 0 31.200 25.000 ug/L 1.6 125 20 70-130 <br /> -.. --- ........ .. .... �..� -----._ .......... - <br /> Trichloroethene BRC0903 Matrix Spike 0803471-18 0 28.290 25.000 ug/L 113 70-130 <br /> Matrix Spike Duplicate 0803471-•18 0 28.910 25.000 ug/L 2.6 116 20 70-130 <br /> _-...-.......................-.- -. -_. -- <br /> 1,2-Dichloroethane-d4(Surrogate) BRC0903 Matrix Spike 0803471-18 ND 10.810 10.000 ug/L 108 76-114 <br /> Matrix Spike Duplicate0803471-18 ND 10.230 10.000 ug/L 102 76-114 <br /> ............_-_.-__......__.-- - ... -.-...... , --- ---------- _ ....._-.__-. -- - -- - .... ...._._ .- _.- ... -..-_.-...._ -- - _ <br /> Toluene-d8(Surrogate) BRC0903 Matrix Spike 0803471-18 ND 10.150 10.000 ug/L 102 88-110 <br /> Matrix Spike Duplicate 0803471-18 ND 10.140 10.000 ug/L 101 88-110 <br /> .... ........ _..-_..___._..-.__ . ._ .. - - _. _..__._...---. --- -._._ ...._.._._. __.. _._ <br /> 4-Bromofluorobenzene(Surrogate) BRC0903 Matrix Spike 0803471-18 ND 9.9900 10.000 ug/L 99.9 86-115 <br /> Matrix Spike Duplicate 0803471-18 ND 9.7700 10.000 ug/L 97.7 86-115 <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,lne,assumes no responsibility for report alteration,separation, detachment or third party interpretation. page 33 of 38 <br /> 4100 Atlas Court•Bakersfield,CA 93308 •(661)327-4911 ^FAX(661)327-1918 .www.bclabs.com <br />