04/25/2001 Environmental Board Minutes

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ENVIRONMENTAL BOARD MEETING APRIL 25, 2001 Trehus questioned the status of the Environmental Audit Worksheet. Mr. Payton responded the draft went to the City Consultant for review. He noted the square footage of the building would be revised and stated the project would be published in a professional journal in June as a forum for response and comment. Mr. Payton added there was a 3.62 wet and fill mitigation underway near the golf course. The surveying areas have been delineated for the expansion of the wetland areas. Trehus stated that the Board wanted to preserve upland, and he sees the mitigation plan as a net loss for the City. Mr. Payton responded the site was a part of the Anoka County Park System so the question was posed to the County for options on wetland mitigation. Vice Chair Mach inquired if it was common practice to go to the County level. Mr. Payton answered the wetland impact and mitigation was all under the jurisdiction of the Rice Creek Watershed District. Trehus questioned the number of acres in the proposed expansion. Mr. Payton pointed out the basin was 3.62 acres at the Target site, so they were working with the watershed district to complete up to 25% of the park. He indicated that 2.5 to,3,,;aCcxs were fairly yt�s�:}w ii+ small and there were other potential sites for mitigation. Mr. Payton advised that rock finds results found arrowheads in the motocross area and shovT'samples confirmed 1977 or 1978 field review reports noting the area for the potentiatsite. Donlin agreed the findings concluded there was archeologcal'`significance because it was a travel path for Native Americans through the Chain"hof Laks., Slue inquired about the consultants who obtained the records from 197,or 1978. Mr.Payton answered they were ot acquired by the document team. "` Donlin questioned the validity of the findings b'dcause of their bias implied by the firms' funding. Mr. Payton explained the consultants were a reputable and well known company that would not falsify information Donlin asked for confirmation ithaeRyanTwould be up front with the City on the results of the study. Mr. Payton assured the Board that it would be honest with the findings. Trehus inquired aboutithewater volumes of the basins. Mr. Payton noted the red areas of the map werefthehinfltration:�areas. He noted that John Powell suggested depressing the Southwest and Noxtlwest areas, because the numbers would remain the same. The Southeast had been removed in the newest plan. Trehus quqstione45 e size of the site, and the movement of the water as to where it was going and the volumes. Mr. Payton responded the site was a little less than 48 acres. The storage volume for the wet component was 13.5 acre feet. The requirement is 5.5 acres. Any two inch rainfall events would be able to go out of a two inch diameter tube. 2