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' F~mnrv 2000 Ha~dm Cid~h Tn~rnn( !rc • 1999 A~vu~rl HybdaAy Rgwrt ~ Pa~,e 1 <br />' 1.0 INTRODUCTION <br />The information assembled in this 1999 Annual Hydrology Report (AHR) includes data colletted from <br />' all hydrologic monitoring sites for the 1999 calendar year at Hayden Gulch Terminal, Ins.'s (HGTI) <br />Hayden Gulch Loadout (I.oadout) facility, Permit No. G92-081. <br />t Locations of the hydrologic monitoring sites are shown on Figure 1, Monitoring Site Location Map. <br />Hydrologic monitoring at the Loadout u performed for surface water, grotmdwater and for National <br />Pollution Discharge Elimination System (NPDES) outfalLs. Water momtoring requirements Eor the <br />' Loadout are found in Tab 13 of the existing, valid Mining Permit. Two surface water sampling sites, <br />HGSDl and HGSD3, are located on Dry Creek upstream and downstream of the primary disturbance <br />area, respectively One groundwater monitoring well, HGDAL3, L completed in Dry Creek alluvium <br />Surface wacer and groundwater monitoring occurred semi-annually, once during June and once during <br />' December. NPDES monitoring occurred weekly, however, samples were only colletted on a monthly <br />base when discharge was present. <br />~J <br /> <br />1 <br />1 <br /> <br />t <br /> <br /> <br /> <br />~- MoabmrryWmsm'P.Q Bas 774018 •SramfoaSpr+g, Q780477 •(970) 979-6160 <br />•,~„~M~~.,~uroa• <br />~"~ <br />