06/27/2007 Env Bd Packet - Laserfiche WebLink

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• into the groundwater are not infiltrating anything other than possible contaminants to the ground water. Adequate separation (3 ") must be shown between the pond bottom and the ordinary high ground water. • A number of wetland, erosion and sediment control, administrative, findings and stipulations as outlined in the CAPROC Attachment. Land Cover The Wessel property is far enough to the West part of Lino Lakes to still be considered to be in the Anoka County sand plain, but close enough to the big woods land type to start seeing Maple Basswood Forest. The Wessel Property vegetation classification consists of: saturated Aspen forest, cattail marsh, cattail marsh - seasonally flooded, long grasses on upland soils, Maple- Basswood forest, mixed emergent marsh- seasonally flooded, seasonally flooded non - native dominated emergent vegetation, short grasses and mixed trees with 4 -10% impervious cover, short grasses on upland soils, short grasses with 28 -50% impervious cover. Rare and Unique Feature Search There are no recorded rare plants or animals on this site. This includes National Heritage plants or animals, or modeled Blandings Turtle habitat areas. Again, there is enough indication that there could be rare plants on part of the property, and the property should be surveyed to verify the presence or absence of rare plants. The area on the Wessel property that would be of concern is indicated on Attachment 10. This area is an area of the property that contains flood plain overlapping Isanti wet soils. Wetland -type rare plants are consistently found in Lino Lakes in this type of eco- system. Wetlands The Routine Assessment wetland report describes the types, amounts and locations of wetlands on the Wessel property. The report also suggests mitigation of affected wetlands on the site. The Moon Marsh site contains 14.18 acres of wetland. According to the Hult report, there are 3.9 acres of Type 3 wetland and 10.2 acres of type 2 wetlands on the site. Mr. Wessel is proposing a 2 for 1 mitigation of which half would be public value credits in the form of rain - gardens. Suggested mitigation includes bmp's use during construction and, a SWPPP, and the establishment of an upland buffer around the wetland mitigation basin and natural wetlands to protect their function and value. Suggest placing the buffer of the western most wetland in conservation easement since this forms part of the City Greenway system (Attachment 11). New wetlands constructed on the site as well as buffer areas should be planted with the City native seed mix.