Laserfiche WebLink
4.0 SDRFACB WATER <br />Trapper Mine monitored one stream site, eight active NPDES <br />discharge sites and one seep associated with an NPDES site during <br />1993. The stream site is Flume Gulch (S1). The NPDES sites were <br />001, 002, 003, 006, 008, 009, 010, and 011. The 10YR/24HR flume <br />(Coyote drainage) and Coyote Dam Seep were also monitored for <br />discharge. The Coyote Dam Seep is below NPDES site 005. Baseline <br />stream site East Pyeatt (S3) is also NPDES site 011. Most sites <br />were visited weekly throughout the year. Plots of flow versus time <br />of the year are presented for those sites monitored by continuous <br />recorders including sites NPDES 001, 002, 003, 006, and Coyote Dam <br />Seep (005). Maps No. 2-1 through 2-3 also show the locations of <br />these surface-water sites. NPDES sites 009 and 011 had no <br />• discharge, therefore no flow data is presented. NPDES sites 012 <br />(Deer Gulch) and 014 (Far East Buzzard) were installed in the fall <br />of 1992 with no discharge observed during 1993. NPDES site 015, <br />Grouse Gulch, was installed in October, 1993. No discharges have <br />been observed. <br />4.1 SDRFACE-WATER FLOW <br />Flow measurements and samples were taken twice during 1993 for <br />Flume Gulch site S1. The 1993 flow data tabulated in Table C-1 is <br />an instantaneous rate associated with a water-quality sample. <br />Figure C-1 presents the flow versus time for NPDES site 001 <br />(Johnson Gulch). Average flow during flow periods was 122.8 gpm. <br />This reflects high spring flows due to snowmelt, wet snow and rain, <br />decreasing to <40 gpm in May and <10 gpm in June. No flows were <br />4-1 <br />