The Environment Agency’s concerns centre on potentially polluting substances that can be associated with infrastructure e.g. pipes and tanks that may have residue products within them, concrete with adhered asbestos etc…. Other excavated infrastructure can be reused under the DoW CoP on the Site of Origin and receiver sites within a Cluster. If fully complied with the Aggregates Protocol allows for inert materials to be used at any site, including those currently not within the scope of the DoW CoP.