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<br />4.0 SORFACE WATER <br />Trapper Mine monitored one stream site, eight active NPDES <br />discharge sites and one seep associated with an NPDES site during <br />1991. The stream site is Flurne 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 Seer is below NPDES site 005, where no <br />effluent discharge tock place in 1991. Baseline stream site East <br />Pyeatt (S3) is also NPDES site 011. Most sites were visited weekly <br />throughout the year. Plots of flow versus time of the near are <br />presented for those sites monitored by continuous recorders <br />• including sites NPDES 001. 002. 006 and Coyote Dam Seep. No plot <br />is shown for CeYOte (005) as there was no discharge. Mans Ne. 2-1 <br />through 2-3 also show the location of these surface-water sites. <br />NPDES sites 003, 009, 011 and 013 had no discharge, therefore no <br />flow data is presented. NPDES sites 008 and 010 only discharged <br />once, in April. NPDES sites 012 (Deer Gulch) and 014 (Far East <br />Buzzard) were installed in the FAll of 199'? with no discharge <br />observed. NPDES sites 004 and 007 have been dropped from the <br />monitoring program after regulatory approvals. <br />4.1 SORFACE-WATER FLOW <br />Flew measurements snd samnles were taken twice rluring 19°1 for <br />Flume Gulch site S1. Data is tabulated in Appendix C. <br />• Eieure C-1 presents the flew versus *_ime for NPDES site 001 <br />(Johnson Gulch), Average flew during the period was 20.4 gpm with <br />4_1 <br />