§ 20.3 General provisions.

(a) An applicant shall file an application in accordance with this part for each separate facility for which certification is sought; Provided, That one application shall suffice in the case of substantially identical facilities which the applicant has installed or plans to install in connection with substantially identical properties; Provided further, That an application may incorporate by reference material contained in an application previously submitted by the applicant under this part and pertaining to substantially identical facilities.