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• Water Quality: <br /> Wetland A <br /> Wetland A is a depressional wetland that has a moderate potential to improve water quality as <br /> persistent ungrazed vegetation occupies more than 50 percent of the total wetland area, and the <br /> wetland lacks an outlet. The ability to improve water quality is further supported by the proximity <br /> of the wetland to surrounding land uses that contain septic systems and areas that generate <br /> pollutants, and the site being located in a watershed or local plan identified as important for <br /> maintaining water quality. Wetland A is a relatively small,isolated wetland located in a localized <br /> depression with no outlet.As such,the purchase of mitigation bank credits from the KFMB will <br /> result no net loss in water quality functions within the Cedar-Sammamish watershed.Wetland A <br /> scores 7 out of 9 for water quality. <br /> Wetland B <br /> Wetland B is a depressional wetland that has a moderate potential to improve water quality due <br /> to the lack of an outlet and the proximity to surrounding land uses that contain septic systems <br /> and areas that generate pollutants,and the site being located in a watershed or local plan identified <br /> as important for maintaining water quality. These water quality improvement features are <br /> diminished in that the wetland is actively mowed and maintained and lacks persistent ungrazed <br /> plants. Ponding in the wetland is minimal and covers less than '/4 of the total area. As such, the <br /> purchase of mitigation bank credits from the KFMB will result no net loss in water quality <br /> functions within the Cedar-Sammamish watershed.Wetland B scores 6 out of 9 for water quality. <br /> • Hydrologic: <br /> Wetland A <br /> The primary sources of hydrology for Wetland A are direct precipitation, overland flow from <br /> adjacent uplands, and a seasonally high groundwater table. In general, Wetland A provides <br /> moderate levels of hydrologic functions due to its moderate storage capacity relative to the <br /> contributing basin and lack of a permanently flowing outlet. Additionally, the wetland is located <br /> in a landscape that generates excess runoff and that contains greater than 25 percent cover of <br /> intensive land uses. Hydrologic functions provided by the wetland have increased value to society <br /> due to the presence of flooding issues down-gradient of the wetland. However, these functions <br /> are limited by the relatively shallow depth of storage during wet periods. The wetland has not <br /> been identified as important for flood storage in a regional flood control plan. As such, the <br /> purchase of mitigation bank credits from the KFMB will result in no net loss in hydrologic <br /> functions within the Cedar-Sammamish watershed. Wetland A scores 6 out of 9 for hydrology. <br /> Wetland B <br /> The primary sources of hydrology for Wetland B are direct precipitation, overland flow from <br /> adjacent uplands, and a seasonally high groundwater table. In general, Wetland B provides <br /> moderate levels of hydrologic functions due to its moderate storage capacity relative to the <br /> contributing basin. Additionally,the wetland is located in a landscape that generates excess runoff <br /> and that contains greater than 25 percent cover of intensive land uses. Hydrologic functions <br /> provided by the wetland have increased value to society due to the presence of flooding issues <br /> 1345.0029—Benton Square 8 Soundview Consultants LLC <br /> Conceptual Mitigation Bank Use Plan April 1,2022 <br />