The purpose of this contract is the construction of tertiary level Waste Water Treatment Plants for city of Brus and city of Blace each with a capacity of 10,500 PE under the FIDIC 1999 Yellow Book Conditions of Contract (Lot 1). Works are divided in 2 sections. Section 1 covers construction of wastewater treatment plant for city of Brus, and section 2 covers construction of wastewater treatment plant for city of Blace.AndThe construction and reconstruction of sewage and stormwater collectors in the city of Brus and in the city of Blace under the FIDIC 1999 Red Book Conditions of Contract (Lot 2). Works is divided into 2 sections.