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Mounds View Ardan Park Ponds <br /> enhance germination for many native broadleaf wildflowers. Other than monitoring establishment, no <br /> other grow-in maintenance activities are needed other than weed spot treatments while the herbaceous <br /> plants establish in woodland and lowland hardwood areas. <br /> Lawn areas planned for conversion to native plantings will require site preparation prior to seeding. Site <br /> preparation may involve a combination of broadcast spraying with a non-selective herbicide such as <br /> glyphosate to kill the existing sod, and light soil scarification. Mowing will be required during the first <br /> growing season after seeding to aid establishment of the native seedlings. Establishment monitoring will <br /> determine whether mowing of the entire planting is needed during the second growing season. At a <br /> minimum, spot weed mowing and spot herbaceous weed treatments should be anticipated for grow-in <br /> maintenance for native ground cover establishment during the second and third growing seasons. <br /> 4.1.5 NATIVE PLUG PLANTING <br /> Native plug planting can supplement seeding in select areas. Plugs are sometimes the best option for <br /> species that are not otherwise available as seed. Pond shoreline areas that need quicker vegetation <br /> cover should be considered for plugs. Watering should be planned as a contingency if sufficient rainfall is <br /> lacking during the first growing season. Plug planting should be done in late spring or in the fall. <br /> 4.2 Cost Estimates <br /> The following cost estimates are based on typical best management practices for conducting the activities <br /> described above, including site preparation (if needed), follow-up treatments and grow-in maintenance. <br /> For activities that should be implemented for at least 3 years as part of the initial restoration process, the <br /> costs are inclusive for that timespan. Additional costs related to potential erosion control materials and <br /> installation, tree inventory/marking, and native plug, shrub, or tree plantings are not included. <br /> Table 3 Vegetation Restoration Cost Estimates <br /> Activity Approximate Acres Subtotal <br /> Cost($)/Acre Cost($) <br /> Tree removal (lump sum) N/A 2.7 $10,000 <br /> Invasive shrub control (3 years) $5,500 2.7 $14,850 <br /> Herbaceous invasive spot treatments—woodland & $2,500 2.7 $6,750 <br /> lowland hardwoods (3 years) <br /> Native seeding—woodland & lowland hardwoods; $1,800 2.7 $4,860 <br /> includes seed & seeding 2 times <br /> Native seeding—lawn to natives (3 years); includes $4,500 1.0 $4,500 <br /> site preparation, native seed mix, seeding, grow-in <br /> maintenance <br /> Total 3.7 $40,960 <br /> Project <br /> ® Number: <br /> 193806462 14 <br />