Any site plan involving a new building, addition to an existing building or change in the exterior design or appearance of an existing building, an application for a fence or wall as provided in Section 22-33, Fences and Walls, and any application for a sign permit provided in Section 22-42, Signs, may be referred to the Design Review Committee for review and recommendation. The Design Review Committee shall render a written report with suggested recommendations to the Planning Board, or the Subdivision and Site Plan Committee, if appropriate, within thirty (30) days of receipt of the site plan. In making its report, the Design Review Committee shall utilize the design standards set forth herein and in Chapter XXXIII, Subdivision and Site Plan. The applicant or his representative may appear before the Planning Board and be heard with respect to the submission. The Planning Board may also authorize the applicant to meet with the Design Review Committee. After the completion of its review, the Planning Board shall approve or disapprove the submission, stating its findings and the reasons for its action. Approval may be conditioned upon the applicant's adoption of specified changes in his submission. A copy of the Board's findings and official action shall be given to the applicant. Whenever a site plan requires approval by the Board of Adjustment, the same procedures set forth in this section shall be followed by the Design Review Committee and the Board of Adjustment. If necessary, a member of the Design Review Committee shall appear before the Board of Adjustment to testify as to the design review report.