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Sail Map�dobod ah CountrArea, Washington <br />Sill Lake Playpmun4 <br />Map Unit Legend <br />Map Unit3ymbol <br />Map Unix Name <br />Acres In AN <br />Percent of AN <br />5 <br />Alkali Urban land <br />co ninth 2 W 8 meant <br />Slopes <br />215 <br />59.9% <br />e3 <br />water <br />144 <br />40.1% <br />Tools for Area of Indianian <br />35.8 <br />100.044 <br />CS) Web Soil Survey (WSS), the project area is comprised of Alderwood-Urban land complex, two to <br />1t percent slopes. This soil is in the hydrologic soil group B, is classified as "moderately well drained," and <br />Ksat of the most restrictive layer is approximately 0.00 to 0.06 inches/hour. <br />brief geotechnical report (dated 12/04/2022, written by Materials Testing & Consulting, Inc.), was submittec <br />the City of Everett for an adjacent project ("Silver Lake Trail"). The boring logs indicate that native soils <br />-site are primarily gravel and or sand with varying degrees of silt. Borings were advanced to 15-23 inches <br />It groundwater was only encountered at boring TP-7 at a depth of 18 inches. While the on -site soil <br />fssification appears suitable for exploring infiltration based BMPs, the presence of silt combined with <br />served signs of erosion, sedimentation, channelization, and perched stormwater, make further exploration <br />on the limiting Ksat, the silt content noted in the boring logs, and Perteet's on -site observations, <br />t does not recommend infiltration Bi to meet MR 5. The proposed impacts do not result in flow <br />or water quality treatment thus a detailed geotechnical investigation is not deemed necessary or <br />Iriate at this time. <br />UiNatural Resources Web soil survey V612022 <br />Conservation service National Coope2tive soil survey Page 3 of 3 <br />