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Ms. Mary Kay Wyland April 20, 1995 Page 5 Page 2, Paragraph 5 On the south side of Holly Drive West, in the northeast corner of the project, is a 0.64 -acre wetland, known as Basin D, which is saturated at a depth of 16-18 inches. The house pads affecting this wetland in Block 5, Lots 39-42 have backyard gradient levels ranging from 909-916 feet. Although this particular wetland does not have a culvert into it, the water runoff from these homesites will flow downhill into Basin D. Basin D's gradient on its western side is 906 feet and decreases to 904 feet on its eastern side --- where it 17ows into the adjacent landowner's 30 -acre parcel (1210 Holly Drive) whose gradient levels gradually decrease to 900 feet --- thereby causing potential off-site ponding and flooding. Basin D is a small portion of a large wetland complex which also includes Basins F and G. "[he proposed development slightly reduces the drainage area to this portion of the wetland and will therefore reduce the volume of water entering the wetland at this point. Any runoff to Basin D will be spread over the entire area of the large basin and will not increase existing water levels. Page 2, Paragraph 6 Ori this same side of the project is the 3.03 -acre wetland identified as Basin G, which is saturated at a depth of 8-10 inches with scattered areas of standing water. This basin is adjacent to Cedar Lake which is listed on the DNR's Protected Water Inventory as Protected Water #12P. On the north end of Basin G is a holding pond located in Block 5, Lots 29, 30, 36, 37 --- which directly adjoins Basin G. Road G has a culvert draining excess water into this holding pond. There is another culvert draining excess water from Roads E & F, into a holding pond located in Block 5, Lots 24-26 on the south end of Basin G. There is an outgoing culvert from this pond, draining directly into Basin G. Since both Basin G and the adjoining 30 -acre parcel (1210 Holly Drive) have the same gradient level of 896 feet, there is potential off-site ponding and flooding onto this property, along with residential contaminants into Cedar Lake. Pond 7, adjacent to Basin G will remove over 92 percent of the total suspended solids and over 66 percent of the total phosphorus in the runoff directed to it. These removals are consistent with the requirements of the City of Lino Lakes and the NURP to protect the quality of receiving waters. The outlet structure on Pond 7 will maintain discharge rates to the adjacent wetland at a rate no greater than those under the undeveloped condition. Page 3, Paragraph 1 On the far southern boundary of this project, is a 2.54 -acre wetland, identified as Basin F which is saturated at a depth of 8-10 inches. Although there are no culverts into Basin F homesites on Block 5, Lots 2,9,12-17, 19,20 have backyard gradient levels ranging from 905-912 feet -- and water runoff will flow downhill from them into Basin F. Both Basin F and the adjacent property owner's 20 -acre parcel have a gradient level of 900 - feet -- thereby causing potential off-site ponding and flooding. Basin F is a small portion of a large wetland complex that also includes Basins D and G. The proposed development slightly reduces the drainage area to this portion of the wetland and will reduce the volume of water entering the wetland at this point. Any runoff to Basin F will be spread over the entire area of the large basin and will not increase existing water levels.