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2245 Watertown Road, Orono <br />No Wetland Memo <br />Table 1. Mapped soil types on and near the 2245 Watertown Road site. <br />Approx. <br />Approx. <br />o <br />Symbol <br />Soil Name <br />Acres <br />% of <br />Hydric <br />Hydric Category <br />AOI <br />AOI <br />Lester loam, 6 to 10 <br />Predominantly Non- <br />L22C2 <br />percent slopes, <br />2.1 <br />31.40% <br />2 <br />Hydric <br />moderatel eroded <br />L25A <br />Le Sueur loam, 1 to 3 <br />0.2 <br />3.30% <br />15 <br />Predominantly Non - <br />percent slopes <br />Hydric <br />Shorewood silty clay <br />Predominantly Non- <br />L26B <br />loam, 3 to 6 percent <br />1.5 <br />21.90% <br />5 <br />Hydric <br />slo es <br />L37B <br />Angus loam, 2 to 6 <br />0.1 <br />1.20% <br />5 <br />Predominantly Non - <br />percent slopes <br />Hydric <br />L132A <br />Hamel -Glencoe complex, <br />2.8 <br />42.30% <br />90 <br />Predominantly <br />0 to 2 percent slopes <br />Hydric <br />No Wetland Determination <br />The 2245 Watertown Road site was investigated on October 20, 2022 for the presence and extent <br />of wetland by Kjolhaug Environmental Services (KES). No wetlands were identified or <br />delineated on the property. At the time of the site visit, climatic/precipitation conditions were <br />atypical (dry) based on the gridded database method, and with exception of a couple of brief <br />periods of normal precipitation, conditions for the overall 2022 growing season were dry <br />(Attachment B). <br />The NWI map showed one PEM1A/PFOIA wetland on the site (Figure 3), and the soil survey <br />showed a hydric map unit (Hamel -Glencoe) through the center of the site (Figure 4). Therefore, <br />Area A was investigated for wetland (Figure 2). However, in the field, no wetland was observed. <br />Topography in the area of mapped NWI wetland/hydric soil was not depressional and sloped <br />downhill to the south. <br />Area A was primarily wooded. Species observed included sugar maple, black walnut, crabapple, <br />planted spruce, green ash and mulberry with an understory of common buckthorn, creeping <br />Charlie, common wood sedge, gooseberry, wild chervil, common burdock, bedstraw, stickseed <br />and garlic mustard. Low coverage amounts of reed canary grass were also observed in some <br />parts of the understory, but its overall presence was not associated with depressional areas and <br />appeared to be a function of sunlight/open areas. <br />Furthermore, surface runoff within Area A is drained by an actively eroding gully (Figure 2). <br />According to the landowner, a stable drainage ditch feature was present on this site for more than <br />33 years (the timespan that the landowner has owned the property). However, only recently has <br />the feature begun to excessively erode. It appears that excessive erosion was instigated when <br />Watertown Road was upgraded, and storm sewer (curb and gutter) was installed along <br />Harrington Drive post 2015. This feature appears to now be receiving more water from one <br />concentrated flow point (storm sewer outlet at Watertown Road) resulting in increased erosion <br />and backcutting. <br />0► <br />