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HYDROLOGIC MONITORING PLAN <br />SOUTHFIELD MINE AND LOADOUT <br />GROUNDWATER SURFACE WATER AND IN-MINE MONITORING <br />I. Surface Drainage Flow Sampling <br />A. Monitoring locations <br />Magpie Creek in diversion adjacent to mine <br />Newlin Creek near GEC Pits <br />Second Alkali Creek near MW-65 <br />Oak Creek near Sedimentation Pond L-2 <br />B. Sampling Frequency and Procedure <br />1. Water quality and flow data will be collected at the <br />Newlin Creek and Oak Creek monitoring locations quarterly. <br />2. Magpie Creek is an ephemeral drainage. Water samples will <br />be collected on an opportunistic basis. A crest stage <br />gage and bottle sample have been installed to measure peak <br />flows and collect water samples during significant flow <br />events. <br />3. Second Alkali Creek is an ephemeral drainage. Water <br />samples will be collected on a opportunistic basis. A <br />crest stage gauge and bottle sampler will be installed to <br />measure peak flows and collect water samples during <br />significant flow events. <br />C. Samp ling Procedure <br />1. The following information will be provided on each sample <br /> bottle label: <br /> - Station/Well designation <br /> - Date and time <br /> - Bottle number <br /> - Analysis code <br /> - Individuals initials <br />2. Samples will be collected in such a manner as to minimize <br /> physical disturbance at the sample point. <br />3. Sampling devices will be cleaned prior to use and samples <br /> will be placed in clean sample containers which will be <br /> sealed at the sampling site. <br />4. Samples will be placed in a cooler with ice immediately <br /> after collection and will be shipped within 24 hours to a <br /> laboratory for analysis. <br />