Minutes - Parks and Recreation Commission - 12/12/1996

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related to the actual minerals in the water. Phosphorus level testing was done with results showing a lower rate up stream to a higher rate down stream (.227, .4275, .6365). The high level phosphorus reading can cause water to have an odor. An explanation was offered for possible causes of a high level reading. Soil sampling can be done in the Spring. The following are present in the water: ammonium, nitrate (no concerns), and in-vivo chlorophyl. Terrestrial Characteristics (Dan Wheeler) There are four types of turtles, and seven types of toads and frogs. Insects are found at the bottom of the stream, but are not indicative of any conclusions. They can be used to do testing in the future. The DNR was contacted about the possibility of stocking the Brook with fish. Factors relating to the Brook being too shallow and temperature variables do not make the Brook a successful location for stocking. There were six types of current land use identified: single family (54.89%); vacant agriculture (18.87%); improved agriculture (15.00%); exempt property (6.32%); commercial (3.14%); and utilities (.24%). Wildlife, vegetation, and soils were the three factors considered in studying development of the area. The dry oak forest, oak woodland brush land, and willow swamp were identified as the three types of vegetation. As well there is reed canary grass and prickly ash - both non-native invasive plants. Boundaries were considered when conducting soil sampling. The north/south boundaries were established as obvious property, and the east/west were established using Armstrong Boulevard and Highway ~47. Soil samples conducted show the area to be suitable for trail development. There are two types of soil: Hubbard Nymore; and Zimmerman Isanti. (Nymore is the most appropriate for trail development.) Trail Development (Gunars Ogrins) The three qualities of a trail for consideration of the study were wideness, functional ability, and stability. Four trail surfaces were considered. Those surfaces and corresponding monetary information were provided as follows: 1) Crushed Limestone ~ $31,900 plus additional options of $6,400 for a total of $38,300. 2) Asphalt ~ $42,800 plus additional options of $6,400 for a total of $49,200. 3) Helbrial Pier Shaf~ ~ $426,000 plus additional options for a total of $647,000. This surface is currently being used by the DNR and was the suggested option of students who conducted the study. Additional benefits of this surface were presented. 4) Low Maintenance Trail ~ approximately $6,000. The proposed location of the trail would entail a total of 4.5 miles. Placement of the trail is recommended for the south side of the Brook. Trail Maintenance (Dave Myers) Maintenance of a winter trail was discussed. There were three criteria used in maintenance assessment of such a trail: inexpensiveness; easily accessible; and efficiency in grooming. Park and Recreation Commission/December 12, 1996 Page 3 of 9