MN Wetland class/Ident/delineation-2012

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The soils at sample point 2-1 UP consisted of an initial 12 inches of 10YR 3/1 silt loam followed by a second horizon that was from 12-26 inches and was a 10YR 3/1 silt clay loam. The third horizon was from 26-32 inches and consisted of 10YR 5/1 sandy clay loam with 10 percent 10YR 5/8 redoximorphic concentrations in the matrix. The soils at sample point 2-1 WET consisted of an initial 8 inches of 10YR 2/1 silt clay loam followed by 8-20 inches of 10YR 2/1 silt clay loam. The third horizon and final horizon was from 20-30 inches and had a 10YR 5/1 fine sandy clay loam texture with 20 percent 10 YR 5/8 redoximorphic concentrations in the matrix. Hydric soil indicator Al2 (Thick Dark Surface) was observed at the wetland sample point. Wetland hydrology was observed at sample point 2-1 WET. Indicators B6 (Surface Soil Cracks) and D2 (Geomorphic Position)were present. Detailed soils, vegetation, and hydrology data for the delineated jurisdictional wetlands are provided in the data sheets of the Technical Documents section. DISCUSSION The site was previously delineated on August 30, 2010 by Brian Burgner of Svoboda Ecological Resources. Four wetlands were identified at the time. In October 2012, SER was asked to complete a MNRAM for three of the four wetlands which were not mapped on the Orono and Minnehaha Creek Watershed District wetland inventory maps and consequently lacked wetland management classifications. During the field visit to collect data for the completion of the MNRAM analysis, SER decided to re-evaluate the wetlands previously delineated. The reason for this was two-fold. A revised version of the regional supplement data forms and guidance manual were released just after the previous delineation was completed. Also, in June 2012 a new, far more comprehensive national wetland hydrophytic plant status list was released which is now mandatory to use. Given these changes and the need for the MNRAM, we felt that it was prudent to reassess the wetland type and boundary in order to more accurately complete the MNRAM assessment. It has been our experience over the past several months in using the revised manual and data forms as well as the revised national hydrophytic plant list that wetland type and boundary determinations can be more accurately made than with the past versions. For this reason we felt it prudent to re-evaluate the prior delineation. The re-delineation resulted in only two wetlands on the property instead of four. Previous Wetlands 1 and 3 no longer meet wetland criteria. Wetlands 2 and 4 continue to satisfy wetland criteria but the boundaries have changed to some extent. SER completed all on-site delineations based on the three required technical criteria as outlined by the 1987 Manual and the current version of the Midwest Regional Supplement: the presence of hydric soils, a predominance of hydrophytic vegetation, and indicators of wetland hydrology Svoboda Ecological Resources Charles Cudd Builders Project Number: 2010-027 4 Orono,MN