As part of a Highways Agency initiative, survey and testing specialists HTS have undertaken Type 2 surveys to more than 300 structures within the M25 sphere.

 Term contractors Carillion have instigated a rolling programme to test bridges, tunnels, gantries and carriageways. 

 HTS engineers agree with the client which parts of a structure should be tested - this may be drains, sealants, permanent formwork, fillers - anywhere where there is considered to be a risk of asbestos. 

A sample is removed in accordance with UKAS accredited sampling procedures and taken away for testing by a laboratory accredited to undertake asbestos testing. 

Sample removal may take the form of drilling, boring, or removal of lump of material such as mastic .  A report is then compiled for inclusion in the client's asbestos register.