Plant 1A is a combination of POPKA with KPA. POPKA is a Kaltim optimization project that was inaugurated on July 7, 1999. POPKA is the first Urea granule factory in Indonesia. After the signing of "Transfer Asset Agreement" on March 13, 2014, Pupuk Kaltim officially took over the operation of PT Kaltim Pacific Ammonia (KPA). The plant uses the Stamicarbon process for Urea and Haldor Topsoe for Ammonia.