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Cutting and removal <br />Excavation <br />An MN DNR permit will be required to <br />execute any of these options. A"do <br />nothing" option should also be considered. <br />MANAGEMENT OPTIONS FOR BENNETT LAKE <br />Bennett Lake has multiple, systemic management challenges and will i�kely require a <br />considerable commitment of reso�rces to achieve noticeable improvemcnts in water quality. The <br />options presented below are made based on what we know about the system now (Table 5.5). It <br />may make sense for the City to pursue Phase 1 management optians now, but consider a more <br />detailed technical assessment of the iake and its watershed to evaivate the specific costs, benefits, <br />and feasibility of structural measures to decrease the pollutant loading to the lake. Outside <br />sources of funding ta support this effort may be available Ehrough MPCA's Clean Water <br />Partnership Probram and the Grass Lake Watershed Managennent Organization. <br />Table 5.5 -- Nlanageme�t options matrix for Bennett �.ake <br />Activity Phase Estimated Cost Comments <br />Targeted street- 1 $15Q/street mile Sweep direct drainage In March/early <br />sweeping April, June, October/Novcmber, <br />remainder of drainage as budget allows <br />Soil phosphorus 1 $400-6Q0 in Top priority are maintained areas of <br />testing analytical costs Central Par�C and residential areas in airect <br />for 50-$0 draina�e. Other areas as funds and time <br />sazn les ailow. <br />Promotion of no- 1 $500 Target areas where soil tests show no P <br />phosphorus necessary. Can work through vendors <br />fertilizer use ancl/or volunteer grou s. <br />Stockina af 1 N/A Cor�tinue working with MN DNR to stock <br />piscivorous fish large predatory fish in ordcr to try to <br />reduce numbcr of small fish that feed an <br />lar�e zooplankton. Grazing on albae by <br />larae zaoplankton can help keep algal <br />blooms in check. <br />In-lake monitorir�g 1 $15 -$1,000/yr Monitonng should be conductcd bi- <br />weekly throughout May-September <br />period. Go with continued monitorinQ by <br />Capitol Regions Watershed District <br />(CRtiVD}, if ossible. If not, low cosi <br />City af Roseville �� <br />I'arks Ncatc�rrrl Resorrrce rLla�ia�enrent <br />