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Section 2 GK 2012 <br /> One significant shortcoming of the current groundwater monitoring network is that the <br /> majority of the monitoring wells are located adjacent to storage and/or disposal ponds and as a <br /> result, have the potential to be influenced by percolated wastewater through localized <br /> mounding. As a result, the existing groundwater monitoring network is likely to provide a <br /> higher groundwater level than what may be found outside the influence of percolated <br /> wastewater mounds. <br /> Data taken from the 2009 groundwater monitoring network, Figure 2-3, shows the <br /> groundwater flow gradient emanating from an apparent mound located roughly near the north <br /> central portion of the WWTF. These flows from the mound appear to be diverging towards the <br /> west, south and southeast toward the river, at gradients ranging from 0.0017 and 0.033. Based <br /> on this assessment of the ground water flow, the north and northeast location of the new <br /> monitoring wells will not be under the direct influence of waste water disposal. <br /> Figure 2-3: 1st Quarter, 2009 Groundwater Elevation Contour Map. <br /> , <br /> CMV <br /> AJ <br /> LLe_ i <br /> 4 <br /> W <br /> �,' ��t�•/'-wry,, f S,y�ryi� l yry <br /> i;r0urKlvkMarNorYk7In94`�i; �'�! �l t* t •��`i�:: ��^ � ' R �r'W�t <br /> ED <br /> Rr,wbmk ih'astewaler Treatrnent and Oispnsai Fadi, r•�,�,r;7"! P ,_ M <br /> ;+ate<,�, # ._ <br /> 0 3?S Ya: <br /> Eco:logic,City of Riverbank 2009 Annual Report <br /> 7 City of Riverbank Waste Water Treatment Facility Background Water Quality Monitoring Well Work Plan <br />