Financial report
186
course of the ownership transformation process. The revalued amount at 31 December 2006
was EUR 8.7 million, representing 47% of the invested assets. The value of the provision is
reduced annually by the same percentage of the value of the accumulated depreciation of the
invested assets. The balance of the reserved assets at the end of 2022 is EUR 2.7 million and
at the end of 2021 EUR 3.1 million.
II. The rehabilitation of the high embankment barrier at the Za Travnikom waste disposal facility
was originally budgeted at €7 million, based on the cost estimate for the rehabilitation of the
barrier at the Bukovžlak non-hazardous waste landfill (ONOB). Following the establishment of
the provision, some urgent measures were carried out in recent past years (dewatering of the
backwaters on the eastern flank - Phase I, construction of a reinforcement embankment on
the second berm of the barrier), and in the following years we mainly expanded and renewed
the network of piezometers for technical observation and drilled some exploratory boreholes.
Based on the results of the observation boreholes, the condition of the barrier body was found
to be better than estimated at the time of the establishment of the provision and there was
no need for additional establishment of the provision at the end of 2021. In 2022, on the basis
of the work carried out by the contractors, we spent EUR 64,949. The surveys carried out and
the regular technical observation at the moment indicate two measures needed: drainage
arrangements on the eastern side of the barrier and reinforcement with drainage on the
western side of the barrier, but these are not critical. Based on a rough estimate of the cost of
the necessary works, we increased the provision by EUR 579,782. This brings the balance of
the provision as at 31 December 2022 to EUR 888,133 and at the end of 2021 to EUR 373,300.
To give a better idea of the reason for the occasional restatement of the long-term provisions,
we provide the following explanations. It is a fact that the barriers at Za Travnikom and
Bukovžlak are constructed as earth barriers, built of different materials, which partly represent
old burdens. They hold back and contain millions of tonnes of material, making removal
physically impossible. The barriers are exposed to natural phenomena (precipitation, drainage,
underground water flows, etc.) and are constantly tending towards entropy. As a diligent and
legally obliged operator, we carry out regular technical observation and all the required
monitoring. We react to the findings by taking the measures deemed necessary by the experts
to prevent the risk of harmful emissions or damage from materialising. Cinkarna has set up a
permanent project team, which, in addition to its own employees, includes experts from the
Chair of Geotechnical Engineering (KGT) at the Faculty of Civil and Geodetic Engineering of the
University of Ljubljana and the design company Hydrosvet d.o.o. The project team meets on a
regular basis to review the agreed work and to discuss any new developments. The expert
findings form the basis for assessing the adequacy of the provisions made.
III. For the rehabilitation of the Bukovžlak non-hazardous waste landfill (ONOB), a long-term
provision of EUR 5 million was originally made in 2011 on the basis of a rough estimate. In
2017, at the time of the project preparation, the need for an additional provision of EUR 1
million became apparent. At that time, the specific implementation technique required was
already known, as were the installation materials. The balance at the end of 2019, after partial
utilisation, was EUR 4.5 million. Investigations into the impact of contamination due to
embedded old burdens (CDM Smith, KGT) showed the need for a sealing curtain on the north-
east side of the ONOB barrier and the rehabilitation of the C1 drainage under the high
embankment of the Bukovžlak barrier. In 2023, the designer was asked to revise the estimate
as at 31 December 2022, covering the necessary additions and subtractions to the
implemented facility, design supervision, geodetic monitoring, necessary measurements and
quality control of the installed materials. At the same time, the timeframe for completion of
all the works was estimated and, accordingly, an adjustment for expected inflation was taken
into account. Together with the drainage facility C1 and the sealing curtain, the amount of
funds still needed for the rehabilitation of ONOB is therefore EUR 8,541,868 (EUR 6,187,523