Reply To: MRV Forum Day 3
1) Calculate the sample size of supplying farms considering the following scenarios:
a. High risk area, total of 67 suppliers. = sample size 8.18 (use square root)
b. Medium risk, total of 49 suppliers = sample size 9,8 – use 20% (but for medium-risk regions reduce 15% of the suppliers that should be accessed (rounding upwards), 8,5 sample 9
c. Low risk area, total of 144 suppliers = sample size 12 – use square root (but for for low-risk regions reduce 30% of the suppliers that should be accessed (rounding upwards). 8,4 sample 9
One should consider the risk of the region the suppliers are located as a discount factor applies: For very high-risk and high-risk regions the values indicated in Table 1 of ANNEX A shall be used; for medium-risk regions reduce 15% of the suppliers that should be accessed (rounding upwards), and for low-risk regions reduce 30% of the suppliers that should be accessed (rounding upwards).
For suppliers (a), (b) and (c) above, what cross-checking would be done for those suppliers not selected for the site visit?
The auditor must cross check public lists or official lists of environmental embargoes or crimes; slave and child labour; conflicts with indigenous or traditional communities; and deforestation.
2) Why is the sampling of supplier relevant in the ProTerra MRV and how should non-compliances be addressed? Please give a concrete, practical example of a non-compliance and expected corrective action.
Correct sampling is important to provide confidence in the consistent application of the Standard requirements throughout the supply chain. Systemic non-conformities means that there is a failure in the management system to consistently address the requirement of the Standard.
NC Water use on the farm is not monitored. CA: Implement a monitoring system and identify opportunities for reduction, ensure compliance through out the supply chain.