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• • s <br />Table 2 <br />Summary of Surface Water Monitoring Sites <br />for the Nucla Mine <br />Site Name Drainage <br />(Computer No.) (See Exhibit 1) Type of F1 ow Measurement and Remarks <br /> <br />SW-N1 Upper Tuttle Draw Flow = cross section x velocity* <br />(SA0001) ~ <br />SW-N2 Lower West Return Monitoring discontinued 11/80 <br />(SA0002) Ditch <br />r <br />SW-N3 <br />Loner Tuttle Draw <br />Flow = cross section x velocity* <br />(SA0003) <br />SW-N4 Lower East Return Monitoring discontinued 11/BO <br />(SA0004) Ditch <br />SW-NS Mid-Lower West Same site as NPDES 001(DA0001) <br />(SA0005) Return Ditch <br />SW-N6 Mid West Return Flow = cross section x velocity* or portable cut-throat flume <br />(SA0006) Ditch <br />*Marsh-McBirney flow meter used when possible on all velocity measurements. <br />