Laserfiche WebLink
assigned a wetland type.This basin,however,exhibits the same vegetation conditions as that of both <br /> Basins 1 and 2 described above. <br /> SER has determined that Basins 1 and 2 should be reclassified as (P-) type wetlands exhibiting <br /> emergent (-EM-) vegetation with a saturated (-B-) moisture regime that is ditched (-d) or Type 2 <br /> (PEMBd)wetlands. SER would classify Basin 3 as a Type 2(PEMBd)wetland as well,based on the <br /> same conditions as described above for Basins 1 and 2. <br /> For a comparison of Type 2 and Type 3 wetlands, refer to the Circular 39 description of these two <br /> types published by the Fish and Wildlife Service. Also,below is an excerpt from a technical paper, <br /> written by Frank Svoboda, that offers a clarification of the Cowardin classification and Circular 39 <br /> Wetland Types 1, 1L, 2, 3 and 7. The full version of this paper is found in Attachment B of this <br /> letter. <br /> Type 2—Inland Fresh Meadows <br /> Inland fresh meadows(Type 2)wetlands have soil that is usually without standing water during most <br /> of the growing season but is waterlogged to within at least a few inches of its surface. Vegetation <br /> includes grasses,rushes,sedges,and various broad-leaved plants.In northern environments,typical <br /> species representatives are carex, rushes, redtop, reedgrasses, mannagrasses, prairie cordgrass and <br /> mints. Meadows may be present in shallow lake basins, sloughs, farmland "sags" or may border <br /> shallow marshes on the landward side. <br /> Table 4(Cowardin et al p.28)includes within its description of Type 2 wetlands as fen and northern <br /> sedge meadow. The water regime is described as saturated (B). This description, as used by some <br /> plant ecologists and wetland scientists,is specifically limiting and at least in some instances does not <br /> suggest that reed canary grass dominated wetlands would fall into this category. <br /> Type 3—Inland Shallow Fresh Marshes <br /> Inland shallow fresh marshes (Type 3) wetlands have a soil substrate that is usually waterlogged <br /> during the growing season and at some times may be covered with as much as 6 inches or more of <br /> water. Common vegetation includes grasses,bulrushes, spikerushes,and various other marsh plants <br /> such as cattails, arrowheads,pickerelweed, and smartweeds. Common representatives in the North <br /> include reed,whitetop,rice cutgrass,carex and giant burreed.Type 3 marshes may nearly fill shallow <br /> lake basins or sloughs or may border deep marshes on the landward side. They may also occur as <br /> seep areas in agricultural fields resulting from failing drain tile systems or where sand seams are near <br /> the surface on hillside slopes. <br /> Cowardin et al (Table 4, pg 28) describes the water regime as either seasonally flooded (C) or <br /> semipermanently flooded (F). The accurate categorization of Type 3 wetlands is most critical since <br /> seasonally flooded wetlands containing reed canary grass are eligible for larger de minimus fills(up <br /> to 10,000 square feet) than cattail marshes (only 400 square feet). <br />