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Seep Inventory and Monitoring Program <br /> Page 5 <br /> 1. Tracer Monitoring - Cont'd <br /> e) Eureka Gulch at EC 34 will be sampled annually <br /> during low flow conditions (probably September or <br /> October) for field and normal sample parameters. <br /> f) The American Tunnel flow before treatment will be <br /> sampled monthly for field and normal sample <br /> parameters. <br /> g) The Terry Tunnel portal will be inspected for flow <br /> quarterly, when accessible. Existence of flow will <br /> trigger a bulkhead inspection. <br /> h) The mine pool water at the American Tunnel bulkhead <br /> will be sampled annually through the 1" pipe. The <br /> sample will be analyzed for water characterization <br /> sample parameters and field parameters except flow. <br /> 2. Bulkhead Inspection: <br /> a) The Terry Tunnel bulkhead will be inspected <br /> annually. At this time, the pressure gauge will <br /> also be read. If the mine pool surface rises above <br /> 11,600 feet in elevation the inspection interval <br /> will become semi-annual. <br /> b) The American Tunnel bulkhead and tunnel will be <br /> inspected weekly after valve closure for the first <br /> month, monthly for the next five months and then <br /> quarterly thereafter. Pressure readings from the <br /> installed gauge will be read during each <br /> inspection. <br /> The tracer monitoring and bulkhead inspection schedule will <br /> remain in effect until two years after leveling off of the <br /> rate of rise of the mine pool as outlined in B.I.3. <br /> III . Cement Creek Conjunctive Flow <br /> SGC will submit to the DMG a plan to characterize conjunctive <br /> flow (surface flow plus groundwater flow in the alluvium) <br /> within the Cement Creek drainage in the vicinity of the <br /> Sunnyside Mine within 30 days of TR-14 approval. <br /> B - 6 <br />