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Table 2 <br /> Summary of Surface Water Monitoring Sites <br /> for Nucla and Nucla East Mines, <br /> Montrose County, Colorado <br /> Site Name Drainage <br /> Mine (Computer No.) (See Exhibit 7-8) Type of Flow Measurement and Remarks <br /> Nucla 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 /> rn SW-N3 Lower Tuttle Draw Flow = cross section x velocity <br /> (SA0003) <br /> SW-N4 Lower East Return Monitoring discontinued 11/80 <br /> (SA0004) Ditch <br /> SW-N5 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 />