For several years now, we have had a fruitful partnership with MOL Petrolkémia Zrt., and previous works recently manifested in a new assignment – this time, we had to take part in an electronic bidding procedure to secure the deal. Ultimately, we edged out the competition, and were tasked with rebuilding the reservoir complex for secondary biological treatment, which was initially constructed by the company’s legal predecessor, Közmű-és Mélyépítő Vállalat (Public Utility and Civil Engineering Company). Primarily, the facility provides buffer storage capacities for purified wastewater and industrial water from MOL Petrolkémia. It also has an important role in chemical safety by preventing high concentrations of potential pollutants from reaching the Tisza river, while the reservoirs also serve as a possible point of intervention in case of emergency situations. The contract was signed in May 2019, and the client scheduled the deadline to 6 January 2020 – by that date, we had wrapped up the works, and the technical handover had also been completed without any glitches.

We did not face any issues while pushing on with the works, partly because the first phase of the same job was also carried out by Colas Alterra four years ago. Interim variations were also minimal, without even affecting the price. As the single hindering factor, MOL Petrolkémia enforces very strict work and environmental criteria when it comes to performing activities at the facility. All personnel working on the area – including subcontractors – must participate in a training course and pass an exam beforehand. After receiving the daily go-ahead for works, air quality must be measured continuously by monitoring personnel, and compliance with this requirement was checked on a regular basis. Besides the company in general, the small team led by site manager Ferenc Gulyás and foreman Elek Garda can be especially proud of the high quality of the reservoirs, as well as our subcontractor for earthworks, Thermál Építő Kft., and our partner in waterproofing, Geofólia Kft.