1980-10-20_REVISION - M1977493 - Laserfiche WebLink

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(10, 868 feet above sea level) . At this elevation, any seepage from the lake would move into Precambrian metamorphic and granitic rock units and Tertiary igneous rocks. All of these rock units are crystalline and have very low porosity and permeability; therefore , seepage from the lake would probably remain localized . Should the water level be higher , seepage would move into Paleozoic sedimentary rocks . These units do not contain any aquifers, and seepage would move into the north-plunging Kokomo syncline. This syncline would again tend to localize the water . Water seeping into the lake from the area of the surrounding natural pyritic halo will probably have a pH of 5 to 6. No known aquifers exist in rock units exposed to the glory hole; therefore , water seepage into the lake should be relatively slow, and natural filtration and dilution should occur . With time, depletion of the pyritic halo and dilution by rain and snowmelt should bring the pH of the lake water toward a more neutral value. It is unlikely that the lake will initially support a diverse aquatic community. However , as the pH increases , a varied aquatic community might be capable of developing , especially with the aid of man. The lake should pose no more hazard to man and wildlife than any other natural lake in steep and precipitous terrain . 9. Q. How is or will groundwater be monitored in the area to insure that seepage is not causing contamination? A. Groundwater is not monitored at the present time. Climax presently contracts with an independent laboratory to monitor the quality of all surface and industrial waters flowing from the Climax property. If low quality groundwater were to surface , this monitoring program would presumably detect it. 10. Q. Who will provide for the operation and maintenance of the reservoirs , tunnels, interceptor canals , control structures , -11-