Any alternate material or method will be considered for approval on the basis of the objectives in Chapter C1-1.3.2 General and C1-3.3 Design Basis of the District’s Design Manual. The Design Engineer shall make an application to the District in writing citing specific details of why the alternate material and/or method is required for the proposed development and how it meets those objectives. Approval by the District will be in writing and the District’s decision will be final.