Memos Date Description and link Dec 19, 2022 Exceptions to the 2023 SLL map (PDF) Dec 19, 2022 Winter load increase start date set for the central, metro, southeast and south SLL zones (PDF) Dec 5, 2022 Winter load increase start date set for the north SLL zone (PDF) Jun 2, 2022 Full-summer overweight permits start date set for the north-central and north SLL zones (PDF) May 23, 2022 Full-summer overweight permits start date set for the central SLL zone (PDF) May 16, 2022 Full-summer overweight permits start date set for the south SLL zone (PDF) May 12, 2022 Full-summer overweight permits start date set for the southeast and metro SLL zones (PDF) Older memos (click Doc Name to sort by ascending or descending date)