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TABLE 2 ANALYTICAL RESULTS OF GROUNDWATER SAMPLES RALPH'S SQUARE - BUI 2122 South Airport Way, Stockton, California (u9/1) Sample ID Date TPH-g Benzene Toluene Total MTBE TBA DIPE ETBE TAME EDB 1,2 -DCA Benzel- Xylenes 01/29/15 <50 <0.5 <0.5 <0.5 <0.5 <1 <10 <1.0 <1.0 <1.0 <0.5 <0.5 08/25/15 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 04/28/16 <50 <0.5 <0.5 <0.5 <1 <0.5 <10 <1 <1 <1 <1 <0.5 MW -16 09/07/16 <50 <0.5 <0.5 <0.5 <1 <0.5 <10 <1 <1 <1 <1 <0.5 (30-50) 01/30/17 <50 <0.3 <0.3 <0.5 <0.5 <0.5 <10 <0.5 <0.5 <0.5 <0.5 <0.5 08/23/17 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 <0.5 <0.5 <0.5 <0.5 <0.5 03/15/18 <50 <1 <1 <1 <3 <3 <50 <5 <5 <5 <1 <1 01/29/15 <50 <0.5 <0.5 <0.5 <0.5 <1 <10 <1.0 <1.0 <1.0 <0.5 <0.5 08/25/15 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <2 <0.5 <0.5 <0.5 <0.5 <0.5 MW -17 04/28/16 <50 <0.5 <0.5 <0.5 <1 <0.5 <10 <1 <1 <1 <1 <0.5 (30-50) 01/30/17 <50 <0.3 <0.3 <0.5 <0.5 <0.5 <10 <0.5 <0.5 <0.5 <0.5 <0.5 08/23/17 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <2.0 <0.5 <0.5 <0.5 <0.5 <0.5 03/15/18 <50 <1 <1 <1 <3 <3 <50 <5 <5 <5 <1 <1 Notes: pgA: micrograms per liter NA: not analyzed NS: not sampled TPH-g: total petroleum hydrocarbons quantified as gasoline DIPE: di -isopropyl ether ETBE: ethyl tertiary -butyl ether MTBE: methyl tertiary -butyl ether TAME: tertiary -amyl methyl ether TBA: tertiary -butyl alcohol EDB: 1,2-dibromoethane 1.2 -DCA: 1, 2 -di chloroetha ne