In any case where a dedication of land for street widening or other public purpose is required as a condition of approval of a minor subdivision, the dedication shall be made by certificate on the parcel map or the subdivider shall cause a separate legal description and Quit Claim Deed, Grant Deed, Grant of Easement, or other legal instrument satisfactory to the City Attorney to be prepared. Such documents shall be submitted to the City Engineer with the parcel map and forwarded to the City Clerk for action by the City Council prior to the recordation of the parcel map.