All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: 1. The Contractor will be responsible for preventing migratory birds from nesting on this project until the tentative start date or an approved, earlier, Contractor-requested start date, whichever occurs first, and throughout the duration of this project, in accordance with the Standard Specifications and other provisions contained in the contract. 2. After receipt of the Notice to Proceed, and prior to the date established in the Notice to Proceed, and after notifying the Department, the Contractor may perform any environmentally-related tasks to satisfy environmental commitments or avoid environmental impacts without the charge of working or calendar days.