Variances may be granted in the regulations set forth herein by the Planning Board if it deems such action essential in view of unusual topographic conditions or other special circumstances, provided, however, that any variance being requested does not conflict with the general purpose and intent of these regulations. Before reaching a decision on variances from regulations involving streets, utilities, or drainage prescribed herein or in Chapter 931, Engineering Regulations, Public Infrastructure Improvements, the Planning Board shall obtain the recommendation of the Director of the Department of Community Development thereon. When the Planning Board's decision differs from the recommendation of the Director of the Department of Community Development, the final determination shall be made by the Commission. To secure a variance, the applicant shall make a written request to the Planning Board explaining fully the reasons therefor and submit same with the Phase I plan, defined in Section 1205.02(c) and 1205.02(d), or as soon as possible after Phase I submission. Action by the Planning Board on such a request will be taken as part of general action on the Phase I plan.