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Table 6. Water quality data at NPDES Outfall 010 for the period of January 1, 2014 - December 31, 2018 Location Date Flow N GPM pH, Field N S.U. oil &Iron Grease Y / N TR MG/L TDS, Lab N MG/L Copper PD UG/L Selenium PD UG/L Selenium* TR UG/L TSS* N MG/L NPDES10 1/9/2014 17.14 8.21 N 0.11 2850 < 0.5 0.3 0.3 NPDES10 2/13/2014 15.87 8.14 N 0.18 2740 < 10 < 3 0.4 NPDES10 3/21/2014 37.62 7.71 N 0.36 1350 < 0.5 0.5 0.5 NPDES10 4/8/2014 1333.34 7.88 N 0.17 2100 <0.5 0.4 0.5 < 10 NPDES10 5/16/2014 83.71 8.08 N 0.08 2110 < 0.5 0.4 0.3 NPDES10 6/18/2014 13.95 8.05 N 0.18 2190 < 0.5 0.3 0.3 NPDES10 7/17/2014 3.03 7.44 N 0.08 2460 < 1 < 0.2 0.4 NPDES10 8/4/2014 16.58 7.66 N 0.14 2590 < 1 0.3 0.3 NPDES10 9/12/2014 14.3 7.69 N 0.22 2560 < 1 0.3 0.2 NPDES10 10/14/2014 17.58 7.97 N 1 0.15 2570 < 0.5 1 0.3 0.3 NPDES10 11/1/2014 16.22 8.14 N 0.17 2530 < 0.5 0.3 0.3 NPDES10 12/1/2014 18.07 7.92 N 0.08 2390 < 1 0.3 0.2 NPDES10 1/15/2015 23.8 8.1 N 0.05 2520 < 0.5 0.3 0.2 NPDES10 2/10/2015 36.8 8.04 N 0.06 2050 < 1 0.3 0.3 NPDES10 3/10/2015 23.2 7.94 N 0.08 2210 < 1 0.4 0.3 NPDES10 4/27/2015 39.4 8.21 N 0.11 2410 < 1 0.5 0.7 < 5 NPDES10 5/26/2015 67.05 6.96 N 1 0.06 2190 < 1 < 0.2 0.4 NPDES10 6/15/2015 43.47 7.79 N 0.09 2270 < 0.5 0.3 0.3 1 6 NPDES10 7/6/2015 31.4 7.44 N < 0.02 2460 < 1 0.3 0.3 NPDES10 8/4/2015 29.1 7.91 N 0.03 2550 < 1 0.6 0.3 NPDES10 9/11/2015 8.5 7.77 N 0.05 2630 < 1 0.3 0.3 NPDES10 10/12/2015 2.7 7.75 N 0.09 2690 < 1 0.3 < 0.2 NPDES10 11/2/2015 7.8 8.13 N 0.08 2700 < 1 < 0.2 < 0.2 NPDES10 12/9/2015 44 8.13 N 0.05 2720 < 1 < 0.2 0.3 NPDES10 1/12/2016 38.35 7.83 N 0.15 2680 < 0.5 0.4 0.4 NPDES10 2/3/2016 21.82 7.19 N 0.05 2760 < 1 149 < 0.5 NPDES10 3/3/2016 17.87 7.04 N 0.17 2560 < 0.5 0.7 0.3 NPDES10 4/6/2016 6 7.7 N 0.2 1820 0.6 0.7 0.7 NPDES10 5/3/2016 208.33 7.73 N 0.05 1790 0.7 0.5 0.5 NPDES10 6/21/2016 15.3 7.21 N 0.1 2340 < 1 0.3 0.3 NPDES10 7/5/2016 31.1 7.48 N 0.09 2350 < 1 < 0.2 0.3 NPDES10 8/1/2016 45.9 7.7 N 0.09 2500 < 0.5 < 0.2 0.3 NPDES10 9/6/2016 18.23 7.68 N 0.18 2630 < 1 0.3 < 0.2 NPDES10 10/4/2016 71.44 8.04 N 0.21 2570 < 1 0.5 0.3 NPDES10 11/2/2016 60.17 7.79 N 0.19 2540 < 0.5 0.3 0.3 NPDES10 12/5/2016 58.5 8.41 N 0.14 2620 < 1 0.3 0.3 NPDES10 1/17/2017 58.02 7.67 N 0.16 2480 < 1 < 0.2 0.3 NPDES10 2/1/2017 56.55 7.61 N 0.15 2530 < 1 0.8 0.3 NPDES10 3/14/2017 58.71 8.04 N 0.63 1600 1 1.3 1.7 NPDES10 4/5/2017 51.75 8.01 N 0.19 2510 < 0.5 0.3 0.4 < 5 NPDES10 5/2/2017 78.2 7.99 N 0.11 2380 < 1 0.4 0.4 NPDES10 6/12/2017 16.9 7.85 N 0.19 2390 < 0.8 1.4 0.3 NPDES10 7/26/2017 15.1 7.71 N 0.09 2750 < 0.8 < 0.2 < 0.2 NPDES10 8/9/2017 18.7 7.67 N 0.11 2870 < 0.4 0.3 0.3 NPDES10 9/3/2017 0.8 7.97 N 0.12 2860 < 0.8 0.4 < 0.2 NPDES10 10/17/2017 23.5 8.17 N 0.16 2960 < 0.8 0.3 0.3 NPDES10 11/27/2017 24.1 7.99 N 0.11 2860 < 0.8 0.3 0.3 NPDES10 12/11/2017 22.3 7.77 N 0.13 3090 < 0.8 < 0.2 0.3 NPDES10 1/3/2018 22.9 7.57 N 0.14 3240 < 0.8 0.3 0.4 NPDES10 2/1/2018 23.1 7.91 N 0.17 2890 < 0.4 13.3 0.7 NPDES10 3/2/2018 23.2 8.29 N 0.16 2540 < 0.8 1.4 0.7 NPDES10 4/24/2018 27.1 8.24 N 0.15 2290 < 0.8 0.3 0.4 NPDES10 5/21/2018 25.5 8.23 N 0.11 2390 3.9 0.5 0.3 NPDES10 6/4/2018 25.2 8.31 N 0.12 2330 10.4 < 0.2 < 0.2 NPDES10 7/30/2018 1 7.96 N 0.38 3020 < 0.8 0.3 0.3 NPDES10 8/8/2018 1 8.14 N 0.1 3050 4.8 1.3 0.3 NPDES10 9/4/2018 0.9 8.22 N 0.27 3080 < 0.8 4 < 0.2 NPDES10 10/1/2018 0 NPDES10 11/19/2018 1.1 8.47 N 0.07 3300 < 2 < 0.2 < 0.2 NPDES10 12/3/2018 1.3 8.02 N 0.07 3330 < 2 1.8 0.4 Daily Max 6.5 - 9.0 10 Report Report Report Report - NPDES Monthly Avg. NA NA 1 Report Report Report Yampa Segment 13i Standards - Acute 6.5 - 9.0 - 50 18.4 Yampa Segment 13i Standards - Chronic 1 29 TM** - Agricultural Use Standards - 200 20 Note *TSS and Total Recoverable Selenium do not have NPDES monitoring requirements at this outfall ** A current condtions temporary modification is in place for the Segment 13i chronic selenium standard. Bold Analyte exceeds the NPDES limit or Agricultural Use standard