01/31/2001 Environmental Board Minutes

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ENVIRONMENTAL BOARD MEETING JANUARY 31, 2001 APPOINTMENT OF CHAIR/VICE CHAIR It was decided that Scott Lanyon would continue as Chair, and that Dave Mach would be the Vice Chair. Kukonen moved to approve the appointments of Chair and Vice Chair. Grundhofer seconded the motion. Motion carried unanimously. PROJECT REVIEW A. Ryan/Target Project Submittal (Item 1-01) — Asleson explained that the green sheet was to help recall previous information relevant to present discussion. There was no green sheet given for this item, because a formal submittal had been received. Asleson read the background section of the agenda sheet item 1-01. Several plans have been submitted including formal project submittal, a grading plan, a tree inventory and preservation/restoration plan, surface water infiltration proposals, a landscape plan, and a lighting plan. No response from the Rice Creek Watershed District has been received. An Environmental Assessment Worksheet (EAW) still needed to be completed and the wetland mitigation area is still yet to be determined. Asleson asked for comments or recommendations from the Board. Chair Lanyon stated that the Board did not know the recommendationstle Watershed District had discussed. The tree inventory was the most important e'oricern for the Board, specifically where the tamarack trees would be planted. .-.i i•. Grundhofer asked if the size of the trees had been determined. Asleson answered that the trees would be two inches in diameter. Chair Lanyon noted that until the Board.had comments and or recommendations from the Watershed District the Board could not make any recommendations. Asleson confirmed that no comments were received in is office from the Watershed District. Chair Lanyon pointed out that other species had encroached in the area. Asleson addressed'the surface water flow, stating concerns about the efficiency of installed infiltration tubes iii the low area before it leaves the site. ic, Y�yF ,heat!, Donlin inquired about the preparation of the area, if they were going to grade and drill. Asleson asked_John Johnson if he could make some general comments about the subject. is .,,r:_ ,h, ':;iS"yY" John Johnson, Civil Engineer, stated that the infiltration tubes were typically 15'x 2'x 3' and worked like a drain field in situations where there was above normal rain and below 100 year rain. The concern was that the ponds would not work as well over time, because of build up of sediment. The infiltration tubes are installed by building trenches with a backhoe, then covering them up. 2