A bomb threat last month that closed the Independence Grove Forest Preserve near Libertyville for more than three days resulted in $25,785 in lost revenue for the Lake County Forest Preserve District.
The situation also produced $11,167 in costs to have ranger police on site 24 hours, according to the district.
Independence Grove has a beach, marina and other amenities and is one of the district's most popular preserves. Four letters outlining a threat were sent, including one to the forest preserve district, which prompted the closure.
No explosives were found and no charges have been filed. The U.S. Postal Investigation Service continues to investigate.