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Riverstone SouthEAWDraft December 2020 <br />b)Other Surface Waters.Describe any anticipated physical effects or alterations to surface water <br />features (lakes, streams, ponds, intermittent channels, county/judicial ditches) such as draining, <br />filling, permanent inundation, dredging, diking, stream diversion, impoundment, aquatic plant <br />removal and riparian alteration. Discuss direct and indirect environmental effects from physical <br />modification of waterfeatures. Identify measures to avoid, minimize, or mitigate environmental <br />effects to surface water features, including in-water Best Management Practices that are <br />proposed to avoid or minimize turbidity/sedimentation while physically altering the water <br />features. Discuss how the project will change the number or type of watercraft on any water <br />body, including current and projected watercraft usage. <br />The proposed project is not expected to affect other surface water features such as lakes, streams, <br />ponds, intermittent channels, or county/judicial ditches. The Mississippi River is located 650 to 780 <br />feet southwest of the site. The project will not have physical effects on the Mississippi River, will <br />not directly affect the number of watercraft on the river,and willtreat stormwater runoff prior to <br />discharge tothe river. <br />12.Contamination / Hazardous Materials / Wastes <br />a.Pre-project site conditions -Describe existing contamination or potential environmental hazards on or in <br />close proximity to the project site such as soil or ground water contamination, abandoned dumps, closed <br />landfills, existing or abandoned storage tanks, and hazardous liquid or gas pipelines. Discuss any <br />potential environmental effects from pre-project site conditions that would be caused or exacerbated by <br />project construction and operation. Identify measures to avoid, minimize or mitigate adverse effects from <br />existing contamination or potential environmental hazards. Include development of a Contingency Plan <br />or Response Action Plan. <br />About70% of theproject area has been in agricultural usesince at least the 1930sand the remaining <br />30% has been in woodland and grassland. The project area does not include any known pipelines, <br />transmission lines, or registered storage tanks. The site is not known to include environmental <br />hazards and the agricultural land use history suggests a low potential for environmental <br />contamination. The project area is not known to include previous building sites, disposal areas, <br />storage tanks, pipelines, or utility corridors. <br />Carlson McCain completed a Phase I Environmental Site Assessment (Phase I ESA) for the property <br />in August2020, and did not identifyevidence ofrecognized environmental conditions or historical <br />recognized environmental conditions in their assessment. <br />The Phase I ESA reported that the site contained no buildings, and recognized thatthe past <br />agricultural land use generally involveduse of pesticides and herbicides, some of which can persist <br />in the environment. However, no evidence of bulk storage or improper application of agricultural <br />chemicals was identified. Theconclusions and summary from the Phase I ESAare included in <br />Appendix D. <br />(WIMN) interactive websites did not identify any potential contamination sites, environmental <br />18 <br /> <br />