10/10/1979 P&Z Minutes - Laserfiche WebLink

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67 Page 6 Planning and Zoning Commission October 10, 1979 It was shown on the county plan as a local street and although Metro and the 1974 plan had not shown it as a collector, it would fall within the rural resi- dential area, and would function as a collector. Mr. Heath felt that Bald Eagle Blvd. would also primarily serve as a collector, and Mr. Short noted that White Bear township was upgrading this from a local street, as shown on the Metro plan, to a collector. He had overlooked it because it represented'such a small area, as well as County Rd 54, but felt they would be' logical to add, along with Elmcrest as well.' Mr. Short indicated he would review these to see if they are viable as collectors, and if not, will show them as proposed collectors. The 1974 plan had shown an existing category and a proposed cat- egory, and perhaps the updated thoroughfare plan could do this as well with the proposed interchanges and proposed collectors. Birch' Street, Holly, and Centerville Road were listed as minor arterials in the 1974 plan,'and as collectors in the Metro plan; Mr. Short 'recommended these be collector status, again reflecting the change in terminology rather than function. County Rd J was shown as a collector in the Metro plan, and in view'of the considerations previously discussed, Mr. Short recommended it be upgraded to a minor arterial. Elm Street was not shown as anything other than a local street except in the 1974'county plan, which showed it as a minor arterial. Mr. Short recommended this be classified as a collector. Mr. Short will refine the update on the thoroughfare plan and add some descriptions and so forth, and have it reduced' to a handout for the next meeting. A two minute recess was taken, after which Mr. Gotwald reviewed the wetlands map he had prepared, copies of which were available for each member. The map showed the major wetlands, basically identified by water and cattails. These had been taken from the USGS map and verified and modified by field trips. Mr.Gotwald had been careful to show only the actual wetlands, as in some cases the areas shown on the USGS map were not wetlands, but low flat plains which,, although within a foot or two of ground water, could be altered by a developer. Average elevations had been shown, with anything below that elevation designated wetland therefore not developable. The existing ponding areas were shown, and as a. -result of development, there were 25 to 30 ponds, representing about 40 acres of land. Two additional things not on the map yet would be shown. The boundary of Anoka County Open Space would be indicated, and no wetlands or elevations .:iT within that would be shown. In addition, each pond on the map would show a bottom elevation and a high water elevation. All additional ponds as a result of development would be added as well. All county ditches and drainage ditches would also be shown as a dashed line. Mr. Gotwald read a suggested statement he had prepared to accompany the map, which was required as a part of the Compre- hensive Plan process. Mr. Short indicated that the restrictive soils map would also fit into the statement. As a result of a question on botton elevations, Mr. Gotwald indicated that Rice Creek Watershed by state law controlled the fact that every time a piece of land was developed or platted, that it provided some ponding. Under their criteria, ponding would have to provide the difference between the existing runoff, that is, in its natural state, and runoff after it was developed. This amount of water had to be ponded, or held back for a period of 24 hours based on a 100-year storm (2 ft in 24 hours). These ponds then , become the responsibility of the local community to maintain. In response to a question from Mr. Heath on centralized ponding, Mr. Gotwald indicated it would be no real problem in the southern area because the ponds were overflowing into the larger wetland areas, which were a part of the county ditch system; however, the situation in the northwest area posed more of. a problem. Eventually a piece of marginal land would have to be set aside there to provide contralized ponding.