Bulgaria's gas transmission system operator Bulgartransgaz said on Friday that it has decided to launch a tender for the construction of a new 484 km gas pipeline from compressor station Nova Provadia, which will be located some 50 km away from the Black Sea coast city of Varna, to the border with Serbia. The project has an estimated value of 2.29 billion levs ($1.3 billion/1.2 billion euro), VAT excluded, according to data published by the energy ministry last month. The deadline for submitting offers is February 15, Bulgartransgaz said on its website. The decision is to be published by the Public Procurement Agency.