b'STAATSOLIE MAATSCHAPPIJ SURINAME N.V.NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 2021 (Continued)4.11 IMPAIRMENT TESTING OF OTHER NON-CURRENT ASSETSTheGrouphasassessedtherecoverableamountofitscash-generatingunitasperthemethodologydescribedinthesummaryofsignificantaccountingpolicies(section2.3)andthescenarioconsistentwithitsviewofdevelopingtheoilreservesinthecurrentfieldsinthecomingyears,investmentstrategyandfutureprices.Themainassumptionsaredescribedbelow:a)FuturepricedevelopmentIn2021,inviewofthesituationinthecommoditymarkets,thesocialandeconomicconsequencesoftheCOVID-19pandemic,theGrouprevieweditsexpectationsoffutureoilprices.Itshouldbenotedthattheseestimatesweremadeinanenvironmentofhighuncertainty,markedbythescenariosemergingfromtheCOVID-19crisis.Fortheimpairmentassessmentofthelong-livedassetsfromtheGroup,thelongtermPirareferencepricewasusedfortheproductbasket:US$/bbl 2022-2045 2022 2023 2024 2025 2026 2027-2045Crude: 64.71 91.99 73.32 63.40 58.6 54.12 63.72Gasoline: 85.24 94.87 85.69 83.23 77.75 75.74 85.71USLD: 88.07 92.97 85.41 83.82 78.86 77.24 89.23b)DiscountratesThepost-taxdiscountrateof10.75%usedbyStaatsolieistheweightedaveragecostofcapital(WACC)aftertax.Thisrateseekstoreflectcurrentmarketassessmentsregardingthetimevalueofmoneyandthespecificrisksofthebusiness.Therefore,thediscountrateused,considerstherisk-freerate,thecountryrisk,thecurrencyinwhichthecashflowsaregeneratedandthemarket,credit,andbusinessrisk.TheWACCconsidersbothdebtandequity(weighted50%).Applyingapre-taxWACCdiscountrate15.19%tothecashflowprojectionsprovidesthesameresult.c)ImpairmentreversalIn2021theimpairmentof2020wasreversedfortheGroupsassetsinthestatementoffinancialposition:(X US$ 1,000)Oil,Explorationandproducingproperties 6,444Refiningproperties 9,224Otherpropertyplantandequipment 206 15,874 160 STAATSOLIE 2021 ANNUAL REPORT'