The location of old stockpiles and the quantities of chemicals in them are largely unknown. While some countries have established inventories of pesticide stockpiles, there are still large gaps in information because leaks and poor labeling make it difficult to identify stockpiled chemicals. The same applies to aging infrastructure and equipment such as electrical transformers and capacitors that are at or near the end of their useful lives and may leak dangerous chemicals such as PCBs. In all regions there is a lack of adequate destruction capacity for POPs. UNEP is now conducting a study to identify destruction capacities worldwide.
POPs are difficult to eliminate and are often destroyed by powerful incinerators.
It is clear too that illegal cross-border trade is a growing problem. Enforcement is often weak and national legislation can be inconsistent, thereby providing an incentive for black market traders. In addition to highlighting the problems facing developing countries, the workshops pointed the way to a number of solutions. In many cases, establishing coordinating committees involving various ministries and NGOs will be a vital starting point. National profiles need to be developed to provide an overview of how chemicals are manufactured, used, and disposed in each country.