6. Operators and undertakings established in the Union shall compare source-level quantification of methane emissions and site-level measurement of methane emissions. If there are statistically significant discrepancies between the source-level quantification and the site-level measurement of methane emissions, operators and undertakings shall:
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(a)
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notify without delay the competent authorities before the end of the reporting period;
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(b)
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carry out a reconciliation process as soon as possible and inform the competent authority about the results of the reconciliation process, including any evidence and supporting documents as necessary, no later than the next reporting period.
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The reconciliation process shall address possible reasons for the discrepancies, including at least the accuracy and appropriateness of the technologies and the methods used for source-level quantification and site-level measurement of methane emissions, or any data uncertainties in the results due to the selected methods, technologies or extrapolation of results.
For the purposes of the reconciliation process, the operators and undertakings shall consider additional source-level quantification or site-level measurements in order to provide the necessary evidence to explain the reasons for the discrepancies. Based on the results of the reconciliation process, operators and undertakings shall implement subsequent adjustments in numerical terms in source-level quantification or site-level measurements, where appropriate.
If the competent authorities consider that the information provided by the operator or undertaking pursuant to point (b) of the first subparagraph does not adequately explain the reasons for the discrepancies, the competent authorities may request the operator or undertaking to provide additional information or to take additional action.