A. Requirement For Hydrogeologic Assessment: The following uses of land shall require a hydrogeologic assessment of the proposed site if the site is located within a high significance aquifer recharge area:
1. Hazardous substance processing or handling.
2. Hazardous waste treatment and storage facility.
3. Disposal of on site sewage for subdivisions, short plats, and commercial and industrial sites.
4. Feedlots.
5. Landfills.
6. Sludge land application sites over forty (40) acres or with an annual application rate of greater than two (2) dry tons of sludge per acre.
B. Contents Of The Hydrogeologic Assessment:
1. The hydrogeologic assessment shall be submitted by a firm with experience in preparing hydrogeologic assessments.
2. The hydrogeologic assessment must show that the use does not pose a threat to the aquifer system and that the proposed use will not cause contaminants to enter the aquifer.
3. Uses requiring a hydrogeologic assessment may be conditioned or denied based upon the city's evaluation of the hydrogeologic assessment. Any project denied a permit based on the city's evaluation shall receive a written explanation of the reason(s) for the denial and an explanation of the measures required, if any, to comply with these regulations.
4. The hydrogeologic assessment shall include, but is not limited to:
a. Information sources.
b. Geologic setting.
c. Background water quality.
d. Location and depth to perched water tables.
e. Recharge potential of the facility site.
f. Groundwater flow direction and gradient.
g. Currently available data on wells within one thousand feet (1,000') of the site.
h. Currently available data on springs within one thousand feet (1,000') of the site.
i. Surface water location and recharge potential.
j. Discussion of the effects of the proposed project on the groundwater resource.
k. Other information as may be required by the city.
C. Impervious Surfaces: Uses located within high significance aquifer recharge areas and that are not required to submit a hydrogeologic assessment shall minimize the extent of impervious surfaces on the site. (1973 Code § 15.24.070)