Nutrients and soil amendments in the amounts determined by soil tests shall be applied to the redistributed surface soil layer so that it supports the postmining land use approved by the Commission and meets the revegetation requirements of §§12.555-12.560 of this title (relating to Revegetation: General Requirements, to Revegetation: Use of Introduced Species, to Revegetation: Timing, to Revegetation: Mulching and Other Stabilizing Practices, to Revegetation: Grazing, and to Revegetation: Standards for Success). All soil tests shall be performed by a qualified laboratory using standard methods approved by the Commission.