General Intent. As a condition to approval and as a condition to continuance of any building, process, installation, production or other use in an industrial district, the applicant shall supply evidence, satisfactory to the Planning Board or to its designated representative, that the proposed building, process, installation, production or other use will conform fully to all the applicable performance standards. As evidence of compliance, the Board may require certification of tests by appropriate government agencies or by recognized testing laboratories, any costs to be borne by the applicant. The Planning Board may require that specific types of equipment, machinery or devices be installed or require specific operating procedures or methods in order to assure compliance with the applicable performance standards.