Documents or information that must be retained are as follows: • copies of the SBA and or AWA(s), original surveys or assessments carried out prior to the publication of these Standards, • details of the competent person/persons that undertook the SBA and AWA(s), • copies of the design works/plans including who undertook design/planning, • other data, information, records that relate to assessment and remediation including but not limited to, building warrant for works (if applicable), contractors/sub-contractors carrying out relevant works, schedule of works, proof of materials used in works/remediation, and completion certificate, • photographs, records and information gathered from visits to the site by the Assessor and or the commissioning party.