Crystal Lake Treatment Scheduled Tuesday, May 20

On Tuesday, May 20th, Hey and Associates, Inc. will be conducting the annual spring beach herbicide treatment at both Main Beach and West Beach swimming areas in Crystal Lake. Both swimming areas are to be treated with Navigate™, a granular form of a selective aquatic herbicide to control submersed aquatic vegetation. A granular formulation of Cutrine Plus™, an algaecide used to treat a type of algae called Chara (also known as Muskgrass or Skunkweed), that is found growing in the shallower areas of each swimming area, will also be applied.

Water use restrictions are as follows:

Do not use water from treated areas for irrigation, sprays or for potable (drinking) water for a period of 21 days

Do not swim in treated water for a minimum of 24 hours after the application date (see above)

There are no restrictions on using water from treated areas for fishing after this application. For more information contact Hey and Associates, Inc. at 847-740-0888.

Lake Treatment For Crystal Lake

On Tuesday, May 29 an area of Crystal Lake will be treated with an herbicide to control invasive aquatic plants. Hey and Associates, the company working with the Crystal Lake Park District on the management of Crystal Lake, will be treating the area in the north cove of the west end between the inlet channel and the point. A granular aquatic herbicide called Hydrothol 191 will be applied to the standing crop of Curlyleaf Pondweed and the emerging Eelgrass.

Treatment of Eurasian Water Milfoil was successfully completed approximately two weeks ago. There are no swimming or fishing restrictions associated with the Hydrothol 191 herbicide application. The complete list of restrictions is as follows:

• Water Use Restrictions for Hydrothol 191:
• Active Ingredients: Dimethylalkylamine salt of endothall
• Weight % Active Ingredient: 11.2, EPA Reg. No. 4581-172-82695
• Restriction Time Frame (# of days)
• Human Drinking 7-25 days
• Human Swimming 0 days
• Human Fish Consumption 0 days
• Animal Drinking 7-25 days
• Turf Irrigation 7-25 days
• Forage Irrigation 7-25 days
• Food Crop Irrigation 7-25 days