Lake Treatment
2009 Proposed Aquatic Invasive Species Controlled Treatment As approved by our Board of Directors at a special meeting Jan. 22, 2009, the Wisconsin Department of Natural Resources (WDNR) has given conditional approval for the Association¹s controlled chemical treatment plan of EWM on North and South Twin Lakes. Approximately mid to late May, up to 5.8 acres EWM on North Twin will be treated with the aquatic herbicide Navigate 2-4 D and up to 161.2 acres EWM on South Twin will be treated with Dow DMA 4 a liquid aquatic herbicide. This treatment supports our approved Aquatic Plant Management Plan for North and South Twin Lakes. The US Army Corps will be involved in the monitoring of the application and evaluation of the AIS Treatment on North and South Twin Lakes as part of a research project they are conducting in conjunction with the Wisconsin Department of Natural Resources. It is important to note that any riparian owners who use the lake water for irrigation or drinking water purposes refrain from doing so for a period of time. Past studies show this time period to be 7 14 days. Liquid 2,4-D sample states a waiting period of no sooner that 10 days and up to 21 days. After the 2009 treatment is completed, information will be posted on the Association¹s website so as to inform that you can begin to use the lake water for irrigation or drinking water. Any additional water restrictions during the day of treatment will be posted at the boat landing and along the shoreline of the treatment areas. Attached is a copy of the map of the proposed treatment areas. Wisconsin Law requires all riparian property owners within 150 feet of the proposed granular and 1200 feet of the liquid treatment areas be sent a copy of the Controlled Treatment Permit prior to the date of treatment. This documentation was sent by mail. The actual day of treatment in May will be determined depending upon the pre-treatment survey completed and the lake¹s water temperature. Once the date has been finalized we will post that date on our NSTLRA Website. www.nstrla.org Questions should be submitted to: NSTRLA P.O. Box 163 Phelps, WI 54554