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2.5 2014 Hydrological Data <br />Hydro- Engineering Inc.'s collation of the 2014 hydrological data for Trapper Mine is submitted as Section <br />2.5, following this discussion, and addresses: <br />a. Groundwater ............................................. ............................... <br />Sections 2.0 -3.6 <br />(1) <br />Groundwater level figures and tables ............................ <br />Appendix A <br />(2) <br />Groundwater quality figures and tables ........................ <br />Appendix B <br />(3) <br />Piezometric surface maps for the major aquifers........... <br />Maps 2 -1 thru 2 -3 <br />(4) <br />Springs data .................................... ............................... <br />Appendix B <br />b. Surface water ........................................... ............................... <br />Sections 4.0 -5.3 <br />(1) <br />Surface -water quality figures and tables ........................ <br />Appendix C <br />(2) <br />Flow measurement figures .............. ............................... <br />Appendix C <br />(3) <br />Flow vs TSS vs time figures ............ ............................... <br />Appendix C <br />(4) <br />Conductivity vs flow vs time figures ............................... <br />Appendix C <br />c. Observed impacts on the hydrologic systems ......................... Section 6.0 <br />Included with the 2014 Hydrology Report is an index sheet to keep the basic well data and aquifer <br />information available to the reader. This index is to be used as the reference and also a "bookmark" as <br />the section is reviewed. <br />2.6 Trends <br />Hydro- Engineering's Section 6.0 discusses the observed impacts on the hydrologic systems of Trapper <br />Mine. Six surface water monitoring sites experienced discharge during 2014. Peak flows occurred at <br />most sites in early March and April. Snowmelt was gradual during the month of February. A second <br />surge occurred in early April when the site experienced a significant snow event. Hydro- Engineering's <br />Section 6.0 discussion provides details concerning 2014 trends. Overall, Trapper continues to have little <br />effect on the local hydrologic regime. <br />2.7 Spoil Spring Sampling (2014) <br />Trapper conducted spoil spring sampling throughout the permit area during 2014. Data from this <br />monitoring is presented in the 2014 Annual Hydrology Report Appendix B Table B -2. Spring and Seep <br />locations are shown on Map M52 in the mine permit. Only those springs with flows exceeding 5 gpm are <br />sampled for full suite analysis in accordance with the approved monitoring program. <br />2.8 WET Testing Results <br />In 2014, two NPDES outfalls had Acute WET tests performed as required by NPDES Permit CO- 0032115 <br />at site 011 and 020. In all cases the discharges showed no acute toxicity to the test species. Summaries <br />for the tests conducted during 2014 are included in Appendix C of Section 2.5. In accordance with our <br />NPDES permit only those drainages that receive pit dewatering or spoil spring contributions are required <br />to undergo WET testing. <br />GCR 3/15 <br />M VWNUALRPIDRMSI4RPTWNNUAL HYDROLOGY RPTS <br />