These rules, regulations and standards shall be considered the minimum requirements for the protection of the public health, safety and welfare of the citizens of the Township of River Vale. Any action taken by the Joint Planning Board under the terms of this Part 8 shall give primary consideration to the above-mentioned matters and to the welfare of the entire community. However, if the subdivider or his agent can clearly demonstrate that, because of peculiar conditions pertaining to his land, the literal enforcement of one or more of these regulations is impracticable or will exact undue hardship, the Joint Planning Board may permit such variance or variances as may be reasonable and within the general purpose and intent of the rules, regulations and standards established by this Part 8.