Default worst-case VOC Values?

We have an international project for which all of the paints and coatings used are proven compliant, except one latex wall primer. The product was intended to be a compliant product by a major paint company. However, although the international distributor provided the required data confirming compliance, we have just discovered the distributor is no longer endorsed by that company and have no other way to confirm the VOC content. Is there a worst-case default value we could use in order to undertake budget method calculations? We would undoubtedly be able to comply. We just need a number upon which to base our calculations.