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The water used at the loadout site was pumped from wells completed in the Roaring Fork <br />alluvium. The withdrawal of this ground water was small and was covered under a plan <br />of augmentation that minimized impact to the quantity of alluvial ground water. All such <br />withdrawals were suspended with reclamation of the site. Alluvial groundwater regimes <br />have likely been restablished in these highly permeable materials. Flood irrigation has <br />been reestablished on the alluvial valley floor. There has been no evidence of any adverse <br />impacts to the ground water quality at the loadout site. <br />2. Surface Water <br />The determination has been made that there is no impact to Middle Thompson Cteek. <br />Surface disturbances in the Middle Thompson Creek drainage included two flow <br />monitoring flumes, a portal, an air shaft, and roads. The roads have been stabilized, and <br />have been permitted for retention. All of the other disturbances were small, and have been <br />reclaimed. There has been no mine water dischazged to Middle Thompson Creek. Except <br />for flow measurements, there has been no monitoring of surface waters in the Middle <br />Thompson Creek drainage. <br />The determination has been made that there is no impact to the Roaring Fork River from <br />disturbances at the loadout site. The loadout site has been reclaimed. <br />Surface water inflows to North Thompson Creek within the permit azea include the <br />discharges from the portals of both Mine No. 1 and Mine No. 3, surface water runoff <br />from reclaimed disturbed areas, discharge from Mine No. 2, flows from springs and <br />seeps, runoff from undisturbed azeas of the permit, and azeas of watersheds above the <br />permit boundary. Dischazges into North Thompson Creek from the mine portals of Mine <br />No. 1 and Mine No. 3, and runoff from disturbed azeas of the permit, aze subject to the <br />Colorado Division of Public Health and Environment (CDPHE) Permit No. CO-0029599 <br />(CDPS). This permit places some limitations, and requires periodic monitoring, for the <br />following parameters: flow, oil and grease, pH, total suspended solids, total dissolved <br />solids, whole effluent toxicity, potentially dissolved cadmium, potentially dissolved iron, <br />and total recoverable iron. One-time analyses were required upon renewal of the CDPS <br />permit for copper, lead, mercury, nickel, selenium and silver. Monitoring of the <br />discharges is not required for pazameters that aze not identified by the CDPHE as being of <br />concern. <br />Of the water quality standazds that have been established for North Thompson Creek, <br />there has been no testing for dissolved oxygen, fecal coliforms, F. Coli, chlorine, nitrite, <br />asbestos, antimony, beryllium, thallium, and uranium. There was no baseline monitoring <br />for silver. <br />19 <br />