DEQ permitting restrictions, national holidays and/or weather conditions may influence the timing of treatments throughout the 2011 season. PLM treats each lake according to a schedule or season plan, established with cooperation of the ILIA board. The treatment schedule is approximate. Please watch your shoreline for the posting of the 8.5" X 11", yellow or green signs. The signs will indicate the date of treatment, the products used, and any restrictions on the use of treated water for swimming, watering lawns, etc.