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Site Location and <br />Number Elevation <br />YSG5 <br />NPDES10 <br />NPDESII <br />NPDESI2 <br />NPDESI3 <br />NPDESI4 <br />YSPG1 <br />YSPG2 <br />YSPG3 <br />Grassy Creek <br />below Scotchmans Gulch <br />6550 Feet <br />(6N87W28DAD) <br />Annand Draw Tributary <br />to Grassy Creek <br />6780 feet <br />(5N87W8ABD) <br />Tributary to Grassy Creek <br />7000 ft. <br />(5N87W16CAD) <br />Tributary to Sage Creek <br />7258 ft. <br />(5N87W19BAA) <br />Tributary to Sage Creek <br />7380 ft. <br />(5N87W19CAA) <br />Tributary to Sage Creek <br />7400 ft. <br />(5N87W19DBC) <br />Pond 012 Basin <br />7250 feet <br />(5N87W19BAA) <br />Pond 012 Basin <br />7268 feet <br />(5N87W19ABB) <br />Pond 012 Basin <br />7338 feet <br />(5N87W19ABA) <br />TABLE 9 (cont.) <br />Period of <br />Operation <br />Comments <br />10/96 -present No instrumentation <br />Monitor discharges from both Seneca II and Yoast <br />Mines on Grassy Creek <br />Constructed 8/96 1.5 €t. i4ele-(1.6 €t. ''ep) ^___`a__ f__-_ i4th <br />Install 3 -ft H -flume in 2015 <br />Constructed 10/97 1.0 ft. wide (1.5 ft. deep) Parshall flume with <br />continuous flow recorded <br />Constructed 9/99 1.0 ft. wide (1.5 ft. deep) Parshall flume with <br />continuous flow recorder <br />Constructed 12/03 2' H -flume with continuous flow recorder <br />Constructed 9/01 3' H -flume with continuous flow recorder <br />N/A Spring w/water rights aka Yoast Spring #1, now <br />inundated by Y1 (012) Pond <br />N/A Spring w/water rights aka Yoast Spring #2. Per water <br />rights document, this is a stock pond at the YSS3 site (see <br />above). Will be replaced by NPDESI2 pond. <br />06/91-08/93 Clearwell spring w/water rights aka Yoast Spring #3, former <br />water supply to Valora Ranch. Sample site was exposed <br />waterline approx. 700 ft. west (downstream) of clear well. <br />Removed by mining. <br />