Significant trees in areas in wetlands, fish and wildlife conservation areas, frequently flooded areas, geologically hazardous areas as defined in CEMC Chapter 18.01, and in the required landscaped buffer adjacent to I-90, shall be preserved. “Significant trees” are defined as existing healthy trees which, when measured four feet above grade, have a minimum diameter of eight inches for evergreen trees, or twelve inches for deciduous trees. Significant trees shall be identified by a tree survey prepared by the applicant and shall be preserved to the maximum extent possible. During construction, the applicant shall use accepted preservation techniques to protect significant trees designated for retention.