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The southern portion of Fourth Lake Forest Preserve near Lindenhurst, IL contains a 200-acre cattail-dominated marsh. The Lake County Forest Preserves is developing a controlled burn management plan for a 60-acre portion of this cattail marsh. In order to implement this plan, a 30 feet wide by 6700 feet long burn break is to be installed by herbicide-killing all vegetation within the alignment and reducing dead stem heights to less than 12 inches. Dead stem heights can be reduced by compaction or mowing/cutting dead biomass.