An applicant for certification in a specialty in geology shall meet all of the requirements of Section 7841 and, in addition, his seven years of professional geological work shall include one of the following:
(a) A minimum of three years performed under the supervision of a geologist certified in the specialty for which he is seeking certification or under the supervision of a registered civil engineer if the applicant is seeking certification as an engineering geologist or under the supervision of a registered petroleum engineer if the applicant is seeking certification as a petroleum geologist, except that prior to July 1, 1970, professional geological work shall qualify under this subdivision if it is performed under the supervision of a geologist qualified in the specialty for which the applicant is seeking certification or under the supervision of a registered civil engineer if the applicant is seeking certification as an engineering geologist or under the supervision of a registered petroleum engineer if the applicant is seeking certification as a petroleum geologist.
(b) A minimum of five years’ experience in responsible charge of professional geological work in the specialty for which the applicant is seeking certification.