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( KLE/NFELOER <br /> r,RnI � ki. Rmn.sowl;o,,,. <br /> Sample <br /> Location Sample Location <br /> No. <br /> S- 1A Farthest upstream sample location on Potter Creek (approx . 200 feet <br /> upstream of S1 <br /> Discharge of the drainage that cuts across Norman's Nursery property from <br /> S-1 the south to the north and enters Potter Creek after the new Basin A near the <br /> northeastern portion of the nursery property <br /> D-2 Discharge from Basin A <br /> S-2 Potter Creek monitoring location approximately 750 feet upstream of the <br /> discharge from Basin B <br /> S-3 I Basin B <br /> D-1 Discharge from Basin B (S-3) <br /> S-4 Potter Creek under the east side of the Escalon Bellota Road Bridge <br /> Duarte Runoff entering Norman 's property from the south <br /> Runoff <br /> The following table lists the position of the the gate valves for the discharge from Basin B d <br /> throughout the fourth quarter of 2012. <br /> Date Basin B Gate Valve Position <br /> October 1 through November 27 , <br /> Closed <br /> 2012 <br /> November 28 through December <br /> Open <br /> 31 , 2012 <br /> 5 . 2.2 Chemical Analysis of Surface Water <br /> During the third quarter of 2012, the surface water monitoring locations were monitored in <br /> accordance with the MRP. <br /> The Duarte property is located south of Norman's Nursery and is an active vineyard . Runoff <br /> water from the Duarte property was collected during 3 of the 12 weekly monitoring events of <br /> the fourth quarter. Nitrate as N was detected in each of the samples with concentrations <br /> ranging from 2. 7 to 5.4 mg/l . <br /> Surface water samples were also collected from sample locations S1A, S1 , S2, S4 , D1 , and <br /> D2 during 3 of the 12 weekly monitoring events and from location S-3 during 9 of the 12 <br /> 117226. E02/ST013R0176 Page 26 of 40 January 31 , 2013 <br /> Copyright 2013 Kleinfelder <br />