The purpose of a Type 1 asbestos survey is to locate the presence and extent of any suspect asbestos-containing materials and assess their condition. Any material which can reasonably be expected to contain asbestos must be presumed to contain asbestos. Where a material appears highly likely to contain asbestos, a strong presumption is made. Sampling and analysis is deferred until a later time (eg. prior to demolition or major refurbishment) and additional management costs may be incurred for some non-asbestos-containing materials. All reasonably accessible areas are inspected (eg above false ceilings and inside risers, service ducts, lift shafts, etc) or must be presumed to contain asbestos.