No noise that is related to the activities within any veterinary or animal hospital shall be discernible at any time from any point outside of the building where such activities are conducted, nor in any other area of the portions of adjoining spaces within said building, occupied by others, that are a part of the said shopping center. The applicant shall provide expert testimony from a licensed professional engineer or architect, experienced in acoustical design, certifying that the proposed construction will comply with this provision. Once said facility is in full operation, the applicant shall retain such an expert to conduct on site testing to confirm compliance with this condition.