You, as the client, will not need to set up the laboratory.
There are four options to consider for on-site analysis:
Establishment of a full blown site laboratory (rarely the best option)
A self-contained towable laboratory unit will be brought to site, where laboratory technicians can conduct the on-site analysis. It is beneficial to have mains power and foul drainage on site but by no means essential
Transportable laboratory equipment can be set up within temporary site accommodation – for example, a cabin that is not currently being used for any other reason on site
Transportable laboratory equipment can, in some instances, be used without having any site-based accommodation
Some applications of on-site analysis do not involve setting up a temporary site facility. For example, some equipment - such as XRF for metals – can be configured to be used hand-held in the field and there is sometimes a place for such basic testing as part of an overall risk management framework. However, it is preferable (or essential for many methods) to have more controlled conditions entailing a site laboratory set up of some description.