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storage of water. Due to the dense assemblage of invasives and low species diversity, the <br /> vegetation within the wetland provides limited resources such as food, water, thermal cover and <br /> hiding cover in close proximity, which wildlife species need to thrive. Roads and residential <br /> development surrounding the subject property on all sides disturb the continuity of the corridor. <br /> The disturbed nature of the corridor and isolation of the wetland limits its ability to provide <br /> valuable wildlife habitat. Therefore, based on the evidence on-site this wetland provides a low <br /> value for this function. <br /> 3.3.2 City of Mukilteo CAMP Wetland 2 <br /> Hydrologic Function <br /> Wetland 2 is located in a topographic depression and is surrounded by gentle slopes. Wetland 2 is <br /> forested with a dense shrub and herbaceous layer in its understory. Wetland 2 does not have a <br /> visible outlet from the subject property, and due to its size and large volume of permanent <br /> flooded area visible in aerial photography, it is expected there is no outlet. In general, wetlands <br /> with no outlets store more amounts of water than depressional wetlands with restricted or <br /> unrestricted outlets. This wetland collects and temporarily stores precipitation as well as runoff <br /> from the surrounding area during storm events. Additionally, Wetland A has good cover of rigid <br /> plants that could reduce the velocity of surface flows during these events. The geomorphic <br /> position of Wetland A is such that it can provide high water storage capacity in its depressional <br /> areas. Based on its geomorphic position, and ability to attenuate surface water flows, Wetland A <br /> provides a high value for this function. <br /> Water Quality <br /> This wetland provides some water quality benefits as water moves through the system. Since this <br /> wetland is a depression with no outlet, the residence time is high. Depressional wetlands improve <br /> water quality by allowing sediment to settle out of the sequestered stormwater due to the <br /> reduction in flow velocity. This sediment is often ionically bonded to pollutants such as <br /> phosphorous. However, less than a quarter of the wetland is seasonally flooded. Seasonally <br /> flooded depressional areas provide the aforementioned functions most effectively because of their <br /> ability to contribute live storage. The presence of dense, uncut, herbaceous vegetation allows this <br /> wetland to perform an increased bio-filtration function. However, the wetland's location in a low- <br /> density rural area, and its small distribution of seasonally flooded areas, limits its ability to <br /> provide a high value for water quality. Subsequently, these conditions allow the wetland to <br /> provide a moderate value of Water Quality function. <br /> Wildlife Habitat <br /> Wetland A has good potential to perform a wildlife habitat function. The wetland has high <br /> structural complexity and is composed of forested and scrub-shrub vegetation. There is high <br /> species diversity, and multiple hydroperiods. The vegetation within the wetland provides <br /> resources such as food, water, thermal cover and hiding cover in close proximity, which wildlife <br /> species need to thrive. Roads and residential development surrounding the subject property is <br /> low, therefore the continuity of the corridor is maintained. Therefore, based on these conditions <br /> this wetland provides a high value for this function. <br /> Mundorf-8th St 12 Critical Area Study & <br /> WRI#16233 Mitigation Plan <br /> Mauch 2016 <br />