In reviewing applications for site plan, subdivision and/or variance approval, the Board shall determine whether any existing nonconforming conditions involving the subject property will exacerbate, intensify, alter, affect or in some way result in a significant impact on the proposed use, structure or land. If the Board finds that no substantial impact or detriment will result, the Board shall so state in its findings of fact in the resolution for the application, without the need for such existing nonconforming conditions to meet the criteria established by N.J.S.A. 40:55D-34, 36, 51a, 51b, 70c and 70d and this ordinance for variances or exceptions, as applicable. If the Board finds that substantial impacts or detriments will result, however, the application shall not be approved unless and until the applicant agrees to mitigate or eliminate such impacts or detriments. The foregoing shall not be construed to alter the review procedures nor the criteria for granting variances or exceptions for violations proposed by the development or existing illegally on the subject property.