Inspection Fees. The approval of site plans, subdivisions and planned developments shall be contingent upon the deposit of a certified check or money order with the Borough Clerk in the amount determined below to cover the cost of engineering inspection. The engineering inspection fee deposit shall be based upon the Engineer's estimate of all standard outside improvements including landscaping, but not including lighting, signs, fencing, etc. Inspection fees in an amount not to exceed, except for extraordinary circumstances, the greater of $500 or 5% of the cost of the improvements as indicated in the approval cost estimate of improvements approved by the Municipal Engineer.