7. Where an ozone-enriched air treatment has been authorised pursuant to paragraph 4, the person carrying out the treatment must, for the purpose of enabling the district council to assess whether the conditions in paragraph 4(a) and (b) continue to be satisfied—N.I.
(a)permit representatives of the district council to examine the method of treatment and place of treatment and take samples for analysis; and
(b)provide such information related to the treatment as is requested by the district council.