(i) avoiding impacts altogether by not taking a certain action or parts of an action; or;

(ii) when avoidance is not possible, minimizing impacts by limiting the degree or magnitude of the action and its implementation, using appropriate technology, or by taking affirmative steps, such as project redesign, relocation, or timing, to avoid or reduce impacts; and mitigating for the affected functions and values of the critical area;

(i) mitigation location. Unless otherwise provided in this chapter, mitigation for impacts to the functions and values of wetlands, fish and wildlife habitat conservation areas and buffers shall be in-kind and on-site. Off-site mitigation may be approved only in those situations where appropriate and adequate on-site mitigation cannot replace the function(s) of the wetlands, fish and wildlife habitat conservation area(s) or buffers at an equivalent level to the off-site location. Off-site mitigation must occur in the same sub-drainage basin for streams, lakes and wetlands, or drift cell for marine waters;

(ii) mitigation timing. Mitigation shall be completed prior to granting of final building occupancy, or the completion or final approval of any development activity or action requiring a project permit for which mitigation measures have been required, except as set forth in chapter 30.84 SCC; and

(iii) function replacement. Unless otherwise provided in this chapter, functions and values shall be replaced at a one to one ratio;

(i) adhering to the standards and requirements in SCC 30.62A.320(1), .330(1), .340(1) and (2) and .450 as applicable; or by

(ii) adhering to the performance standards in SCC 30.62A.320(2) and (3), .330(2), .340(3) and (4), or .350 and mitigating for impacted functions and values as follows: