ARCHIVED REPORTS_2014_1 - Laserfiche WebLink

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� M M M M M M M M M ® ® M M ® ® M HISTORICAL SUMMARY OF ANALYI UNSATURATED ZONE AIR NORTH COUNTY SANITARY LANDFI SG -1 Intermediate Sample Type: Air Sampling Date 1/30/09 7/14/09 1/29/10 8/7/12 Monitoring and Field Parameters Methane Concentration (percent) 0 0 0 0 Carbon Dioxide (percent) 1.2 1.4 1.6 0.2 Oxygen (percent) 17 17 17.4 20.8 Volatile Organic Compounds PPB_ (v Acetone <4.8 5.4 5.5 NR Alpha-Chlorotoluene <1.2 <1.2 <1.2 NR Benzene <1.2 <1.2 <1.2 NR Bromodichloromethane <1.2 <1.2 <1.2 NR Bromoform <1.2 <1.2 <1.2 NR Benzyl Chloride <1.2 <1.2 <1.2 NR Bromomethane <1.2 <1.2 <1.2 NR Carbon Disulfide <1.2 1.4 <1.2 NR 1,3 -Butadiene <1.2 <1.2 <1.2 NR 2-butanone <1.2 1.6 1.5 NR Carbon Tetrachloride <1.2 <1.2 <1.2 NR Chlorobenzene <1.2 <1.2 <1.2 NR Chloroethane <1.2 <1.2 <1.2 NR Chloroform <4.8 <4.7 <4.8 NR Chloromethane <4.8 <4.7 <4.8 NR 3-Chloropropene <4.8 <4.7 <4.8 NR Cumeme <1.2 <1.2 <1.2 NR 1,2-Dibromoethane <1.2 <1.2 <1.2 NR trans-1,4-dichloro-2-butene <1.2 <1.2 <1.2 NR 1,2-Dichloropropane <1.2 <1.2 <1.2 NR Cyclohexane Dibromochloromethane <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 NR NR 1,2 -Dichlorobenzene 1,3 -Dichlorobenzene <1.2 <1.2 <1.2 <1.2 <1.2 <1.2 NR NR 1,4 -Dichlorobenzene Dichlorodifluoromethane (Freon 12) <1.2 1.6 <1.2 6.6 <1.2 4.-8N NR R 1 1-nirh1nrnPthanP <1.2 <1.2 <1.2 NR cis- 1,3-Dichloropropene <1.2 <1.2 <1.2 NK trans- 1,3-Dichloropropene <1.2 <1.2<1.2 NR 1,4 -Dioxane <4.8 <4.7 <4.8 NR