Any development in wetlands shall provide for the replacement of lost wetlands caused by the project. mitigation shall occur at a ratio of two units of replacement wetlands for each one unit or fraction thereof of lost wetlands (a 2:1 ratio). mitigation should generally be in-kind and on-site; however, alternative wetland community types and mitigation sites may, at the sole option of the city, be considered in lieu of in-kind and on-site mitigation if the latter is not a practical option. If mitigation in this manner is not feasible, then such practices as land banking and wetland enhancement may be considered. All such proposed mitigation shall be reviewed and approved by the city engineer prior to the issuance of a development order for the project. The approved mitigation plan shall become a part of the approved site plan or subdivision plat. mitigation methods, as delineated in the Management and Storage of Surface Waters Handbook of the St. Johns River Water Management District, shall be used, as appropriate.