Deliverable D1.1 is the "Project Guidelines Document (PGD)" of the LIFE22-NAT-EL-LIFE MareNatura project: It is an internal document that sets the structure, communication channels, methods and reporting periodicity internally and to EC, as well as the procedures for conflict solving. It also contains: i) the "Quality Assurance Plan (QAP)" aimed at establishing a proactive process of planning, implementing, and monitoring the quality actions and processes throughout the project in order to ensure the high quality of the deliverables and the overall project quality, and ii) a Guide on "Green Public Procurement (GPP)" aiming to facilitate the use of GPP procedures for (a) the purchase of equipment and consumables and their use in the project, (b) office operation and (c) implementation in project actions. Being a living document, the PGD may change depending on the project's needs.