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NRCS soils data, and a pond management report prepared for the City of Mounds View <br />(Environmental Specialists 1959). <br />The 1991 aerial photo shows the pond as having a sharply -defined shoreline and little to no <br />vegetation. A large area of shrub Carr/wet forest was present in 1991 and remains in place today. This <br />may be a remnant of historic wetland left unaltered. By 2003, the pond vegetation had grown in <br />considerably, with a tree -lined bank, vegetated shoreline, and nearly complete coverage of floating <br />vegetation, This is suggestive of vegetative succession occurring within a pond that was constructed <br />in the recent past. <br />The National Wetland Inventory recognizes two separate emergent (herbaceous) wetlands within the <br />pond that range from seasonally flooded to semi-pemianently flooded. <br />The United States Department of Agriculture Natural Resources Conservation Service Soil Data Mart <br />for Ramsey County was consulted for review of'onsite soil properties. The hydric sail rating was <br />generated from the United States Department of Agriculture Natural Resources Conservation Service <br />Soil Survey Geographic Database (USDA MRCS SSVRGO) using the Soil Data Viewer `Hydric <br />Rating by Map Unit' option. The resources revealed that the areas of the pond that appeared to be <br />native, historic wetlands are underlain by (540) Seelyeville Muck and (543) Markey Muck, which are <br />100% hydric soils. These are very poorly drained, frequently ponded, depressional soils with organic <br />content (muck) of about 62 to 70 percent. This information lends to further support to the pond <br />having been constructed in a natural wetland. But these sources also revealed that there are areas that <br />may have been excavated in upland soils ((158B) Zimmerman loamy fine sand, 0 to 6% slopes) or <br />soils that may have been historically wetlands prior to urban development ((] 027) Udorthents, wet <br />substratum). <br />As a result of the aerial photography review and other available data, it is concluded that Silver View <br />Pond was mostly, but not necessarily entirely, constructed out of historic wetlands. It appears that <br />dredging occurred to (a) connect two historically separate wetlands, (b) expand storage capacity <br />outside the limits of the historic wetlands, and (c) create open water for aesthetics. A summary of the <br />wetland evaluation is shown in Table 5. This conclusion was further confirmed in the city's 1989 <br />pond management report, where it states that Silver View Pond was excavated in 1982 and goes on to <br />say that 82% of the current pond configuration was originally wetland. <br />P: Mn1s 2 MN h?14621082 :Sil%er Vie hind Asses,,wvpv Work ices Rerov Siker Vi" Pond AIse stn7enI-I inat doo, 15 <br />