19.76.050 Low-impact development techniques and facilities.
A. Applicants must locate and design all buildings, streets and pathways, parking areas, and utility easements to promote public safety, ensure compatibility of uses, minimize effective impervious surface, preserve native vegetation, and complement predevelopment site characteristics such as topography, soils, hydrology, and other natural features.
B. General Design Techniques.
1. Applicants must limit clearing and grading to the minimum necessary for construction of permitted uses and associated utilities.
2. Applicants must consider limiting lawn areas, driveways, and roads and locate them in a manner that results in the least disruption to the topography and native vegetation on the site.
3. Applicants must consider clustering lots, dwelling units, or building structures during the conceptual planning stage to preserve open space, reduce total impervious surface area, and minimize development impacts on adjacent critical areas and associated buffers.
C. Projects subject to minimum requirements 1-9 must comply with the following:
1. After the project is complete, there may not be a net increase in impervious surface above the limit on the permit, plat, or site plan without approval from the director.
2. For subdivisions, the maximum impervious surfaces allowed for each lot must be added to the face of the plat.
3. For all other development, the maximum impervious surface allowed for the development must be added to the face of the final, approved site plan.
D. Where native vegetation is used to achieve Stormwater Management Manual Minimum Requirement 6 (Runoff Treatment) or Requirement 7 (Flow Control), the applicant must establish one or more of the following permanent protective mechanisms to ensure that native vegetation is retained:
1. A protective easement dedicated to the City on a form provided by the department;
2. A separate nonbuilding tract owned in common by all lots within the subdivision;
3. Restrictions on the future use of the area recorded on the face of the final plat;
4. An alternative permanent protective mechanism approved by the director.
E. Where an LID stormwater facility is required, the applicant may use that facility to satisfy landscaping requirements so long as the purpose and intent of required landscaping is satisfied and the landscaping does not disrupt the function of LID stormwater facilities. (Ord. 2991 § 1 (Att. A), 2016)