16.18D.040 Activities allowed in critical aquifer recharge areas.
The following activities may not require submission of a critical area report for critical aquifer recharge areas:
A. Construction of structures and improvements, including additions, resulting in less than five percent or two thousand five hundred square feet (whichever is greater) total site impervious surface area that does not result in a change of use or increase the use of a hazardous substance.
B. Development and improvement of parks, recreation facilities, open space, or conservation areas resulting in less than five percent total site impervious surface area that do not increase the use of a hazardous substance.
C. On-site domestic septic systems releasing less than fourteen thousand five hundred gallons of effluent per day and that are limited to a maximum density of one system per one acre.1 (Ord. 1104-15 § 1 (Att. A)).
1Maximum density of septic systems is based on Guidance Document for the Establishment of Critical Aquifer Recharge Area Ordinances, by the Washington State Department of Ecology, 2000, Publication No. 97-30.