Liquid samples that present low contamination levels will be stored temporarily in order to pour them afterwards into a sewage system. Those highly contaminated samples which might correspond to non aqueous phase liquid (NAPL) will be managed as hazardous waste and treated accordingly. This kind of waste will be temporarily stored in air-tight and secure deposits until they are transported to appropriate elimination installations. Before transporting, a liquid waste, it is necessary to check that barrels or containers are tightly sealed. Loading should be performed in a vertical position with seals up. Transport of waste should follow, as mentioned already before, regulations accepted along the whole planned trip, including intermodal transportation and in case no specific regulation is applicable the European Agreement concerning International Carriage of Dangerous Goods by Roads or the corresponding railway or maritime agreement can be of guidance.
In any case, before a waste producer needs to move the generated waste to a treatment installation, an acceptance document from the correspondent waste manager is required. Industrial waste should be managed by an authorized company.
If hazardous waste has to be exported, an authorization from the destination and transit countries is required. Furthermore, a Control and Monitoring Document should be prepared jointly by the waste manager and producer for every hazardous waste type and the responsibility and title deed of the waste should be identified at every step of the transport process.
Finally, the forwarder should have the necessary vehicle documentation and a civil responsibility insurance in order to cover any possible risk due to transport of hazardous waste.