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*Where vegetation cover is poor, unhealthy or dominated by weeds and soil pH is '''lower'' than the design/product specification or Acceptance Criteria ranges, corrective action involves amending the soil with ground limestone to raise the pH back to neutrality.
*Where vegetation cover is poor, unhealthy or dominated by weeds and soil pH is '''lower'' than the design/product specification or Acceptance Criteria ranges, corrective action involves amending the soil with ground limestone to raise the pH back to neutrality.
*Where soil pH is '''higher'' than the design/product specification or Acceptance Criteria ranges, corrective action involves amending the soil with sulphur or [[compost]] to lower the pH back to neutrality. Amendments to [[green roof media]] should be prescribed by the designer, product vendor or media supplier.
*Where soil pH is '''higher'' than the design/product specification or Acceptance Criteria ranges, corrective action involves amending the soil with sulphur or [[compost]] to lower the pH back to neutrality. Amendments to [[green roof media]] should be prescribed by the designer, product vendor or media supplier.
[[category:Testing]]
[[category:water quality]]