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Water quantity and quality will not change due to the project. Water from the Elk River <br />will be directed away from work areas during construction to safeguard its quality, but it <br />will continue to pass through the lake. <br /> <br />b. Identify the route(s) and receiving water bodies for runoff from the site. Estimate the impacts of the <br />runoff an the quality of the receiving waters. (if the runoff may affect a lake consult "EAW Guidelines" <br />about whether a nutrient budget analysis is needed.) <br /> <br />Lake Orono drains via the Elk River to the Mississippi River, which is approximately one <br />mile away. A negligible increase in water quality may result from the project due to an <br />increase in the lake's volume. <br /> <br />19. Water Quality - Wastewaters <br /> <br />a. Describe sources, quantities, and composition (except for normal domestic sewage) of all sanitary and <br />industrial wastewaters produced or treated at the site. <br /> <br />N/A <br /> <br />b. Describe any waste treatment methods to be used and give estimates of the composition after <br />treatment, or if the project involves on-site sewage systems, discuss the suitability of the site conditions for <br />such systems. Identify receiving waters (including ground water) and estimate the impact of the discharge <br />on the quality of the receiving waters. (if the discharge may affect a lake consult "EAW Guidelines" about <br />whether a nutrient budget analysis is needed.) <br /> <br />N/A <br /> <br />e. If wastes will be discharged into a sewer system or pretreatment system, identify the system and <br />discuss the ability of the system to accept the volume and composition of the wastes. Identify any <br />improvements which will be necessary. <br />N/A <br /> <br />20. Ground Water - Potential for Contamination <br /> <br />a. Approximate depth (in feet) to ground water:__ <br /> <br />minimum; __ average. <br /> <br />The minimum and average depth to groundwater at the disposal sites is greater than 6 <br />feet. The depth to ground water for the lake is hard to ascertain because it is an <br />impoundment of surface waters. No ground water seepage back into the lake has been <br />observed during past draw downs so it can be assumed that the natural depth to ground <br />water is the elevation of the Elk River or lower. <br /> <br />b. Describe any of the following site hazards to ground water and also identify them on the site map: <br />sinkholes; shallow limestone formations/karst conditions; soils with high infiltration rates; abandoned or <br />unused wells. Describe measures to avoid or minimize environmental problems due to any of these <br />hazards. <br />None of the hazards described are of concern with this project. <br /> <br /> <br />