4. The Agency shall not recognise such a water unless the responsible authority of the country in which the water is extracted has certified that–
(a)it is satisfied–
(i)that the requirements in paragraphs 2 and 3 of Part 3 are established; and
(ii)with the evidence given pursuant to sub-paragraph (c) of paragraph 2; and
(b)periodic checks are made to ascertain that–
(i)the water is natural mineral water which complies with paragraph 3 of Section I of Annex I;
(ii)the characteristics of the water are assessed in accordance with–
(aa)the points numbered 1 to 4 set out in paragraph 2(a) of Section I of Annex I;
(bb)the requirements and criteria listed in Part 3; and
(cc)recognised scientific methods; and
(iii)the provisions of Schedule 4 are being applied by the person exploiting the spring.