For the European Commission, STELLA managed the Malta Environmental Approximation Project (MEAP). MEAP's goal was to develop and provide a realistic programme for the transposition, implementation, and enforcement of the EU environmental acquis. Implementing EU environmental legislation in Malta had significant administrational and institutional changes and required significant financial commitments in terms of investments, operation and maintenance costs, costs of enforcement, inspection and monitoring, etc. STELLA has identified four environmental sectors for which the approximation of the acquis will result in the largest investments: water supply and wastewater treatment, waste management, air pollution control, and industrial pollution control. In each of these sectors, STELLA has identified the cost components and established the frameworks to calculate total investment and annualised costs.