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Table 1 Summary of VOC Detections at the Northern California Youth Correctional Center CYA-1 Date Bromoform 1,1-Dichloroethane Dichlorodifluoromethane Tetrachloroethene 1,2,4-Trichlorobenzene Trichloroethene Trichlorofluoromethane 7/31/2007 NS NS NS NS NS NS NS 8/16/2007 NS NS NS NS NS NS NS 9/11/2007 NS NS NS NS NS NS NS 10/11/2007 NS NS NS NS NS NS NS 11/19/2007 ND ND 1.6 3.2 ND ND ND 12/13/2007 ND 0.21 J 1.6 3.8 ND 0.49 J 0.42 J 1/17/2008 ND ND ND 3.8 ND 0.56 ND 2/22/2008 ND ND 1.7 4.0 ND 0.51 0.40 J 3/13/2008 ND ND 2.2 4.2 ND 0.55 ND 4/16/2008 ND ND 1.6 3.9 ND 0.56 0.35 J 5/7/2008 ND ND 1.7 3.8 ND 0.54 ND 6/18/2008 ND 0.18 J 1.4 3.3 ND 0.42 J 0.29.1 7/15/2008 ND ND 1.1 2.3 ND 0.29 J ND 8/1/2008 ND 0.18 J 1.5 2.7 ND 0.41J 0.21 J 9/9/2008 ND ND 1.2 2.0 ND ND ND 10/16/2008 ND ND ND 4.6 ND 0.64 ND 11/13/2008 ND 0.25 J 2.0 4.9 ND 0.69 0.43 J 12/9/2008 ND ND 2.6 5.0 ND 0.79 ND 1/20/2009 ND ND 2.2 5.6 ND 0.82 ND 2/5/2009 ND ND 2.2 6.2 ND 0.89 ND 3/17/2009 ND ND 2.5 5.4 ND 0.96 ND 4/15/2009 ND 0.34 J 1.5 6.2 ND 1.0 ND 5/27/2009 ND ND 1.6 4.4 ND 0.71 ND 6/23/2009 ND ND 1.4 3.6 ND 0.56 ND 7/28/2009 ND ND 1.9 3.8 ND 0.57 ND 8/12/2009 0.78 ND 1.1 3.0 ND ND ND 9/11/2009 ND ND 1.9 4.7 ND 0.76 ND 10/1/2009 ND 0.19 J 1.4 4.5 ND 0.70 0.28.1 11/18/2009 ND ND 2.7 5.1 ND 0.88 ND 12/17/2009 ND ND ND 1.8 0.83 ND ND 1/20/2010 ND 0.28 J 2.0 5.7 ND 1.0 0.44.1 Federal MCL 80* - - 5 70 5 - California MCL 80* 5 5 5 5 150 All results presented in ug/L. Federal MCL:Maximum Contamination Level from EPA 816-F-03-016 California MCL:Maximum Contamination Level from California Code of Regulations Title 22§64444 and§64533 ND:Not detected above the method detection limit(MDL). NS:Not sampled due to mechanical failure. 1:Estimated value between the practical quantitation limit(PQL)and MDL. Constituent exceeds Federal and/or California MCL. *Listed MCL is for total trihalomethanes. Constituent-specific MCL not established.