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Taj Bahadod Page 6 of 9 December 23,2014 only occur following a dramatic climatic calamity not experienced in the past several thousands of years. The data presented on cross section A-A' indicates that monitoring well MW-2R penetrates the deepest into the Mehrten Formation. It penetrates the Mehrten to an elevation of approximately 0 ft, msl. Monitoring well MW-5 penetrates the Mehrten to an elevation of approximately 25 ft, msl. New double screened monitoring well MW-6 will likely encounter the same material observed in the boring log of MW-5, but penetrate to an elevation of approximately 0 ft, msl. Based on the boring log for monitoring well MW-2R, which penetrated to that same elevation, it is my professional opinion that the same continuous sandstone unit of Mehrten Formation will be encountered at that depth,as have all of the other wells at the site. It is also my professional opinion that the lower screened interval of MW-6 will monitor the first encountered groundwater within the same sandstone unit, when the groundwater levels at the site drop below their present levels. Screen Separation in MW-6 The two discrete screened intervals in MW-6 allow for the continuous monitoring of this well when the water level in the Mehrten drops. The portion of the sandstone unit open to the lower screened interval at MW-6 is hydraulically separated from the upper screened interval by a bentonite seal in the borehole. This bentonite seal prevents groundwater exposed to the upper screened interval to penetrate deeper through the borehole into lower screened interval. An inflatable packer will be placed between the two screens to prevent water from the lower screen to be collected by the sampling pump, thus diluting the sample collected from "first encountered groundwater". When the water level in this continuous sandstone unit drops below the upper screen,the packer will be removed and the sampling pumped lowered to the lower screen. This process can be reversed if climatic and/or groundwater extraction conditions change. VOCs in Groundwater Groundwater well MW-3 is the only monitoring well at the site where volatile organic compounds(VOC)have been detected. VOC detections at MW-3 have been intermittent,the most recent sample collected from MW-3 during the third quarter 2014 monitoring event was free of VOC detections. The data presented in the semiannual monitoring reports describe the non-uniform detections of VOCs at MW-3 and present an interpretation for their appearance and disappearance based upon surface activities. The current spate of detections is believed to be derived from the installation of an impermeable liner over a portion of the waste in Module 1. It is our professional opinion that this liner has caused increased migration of landfill gas (LFG) into the vadose zone of the Mehrten Formation and this LFG is the carrier medium for VOCs. MW-6 Design.docx