14.36.180 Wellhead protection area standards for new uses.
The following standards for new uses within designated wellhead protection areas are established to minimize risk to potable water supplies.
A. The following uses shall be prohibited within the designated one-year time of travel zone:
1. Land spreading disposal facilities (as defined by Chapters 13-304 and 173-308 WAC--disposed above agronomic rates);
2. Direct groundwater recharge or surface percolation using reclaimed water (as defined under RCW 90.46.010);
3. Animal operations with over two hundred animal units. For purposes of this section, one animal unit is the equivalent number of livestock and/or poultry as defined by the U.S. Department of Agriculture Natural Resource Conservation Service Animal Waste Field Handbook;
4. Petroleum products refinement, reprocessing, and storage (except underground storage of heating oil or agricultural fueling in quantities less than one thousand one hundred gallons for consumptive use on the parcel where stored), and liquid petroleum products pipelines;
5. Retail gas stations and non-retail fueling stations, and mobile on-site fueling of commercial or residential vehicles;
6. Automobile wrecking and salvage yards;
7. Dry cleaning and garment care facilities, excluding drop-off only facilities, that utilize solvents (including but not limited to perchloroethylene (PERC), trichloroethylene (TCE), toluene, methyl ethyl ketone (MEK), glycol ethers, liquid silicone, liquid carbon dioxide, or brominated solvents) as part of their service;
8. Deep underground injection control (UIC) wells that extend below an upper confining layer and discharge stormwater into the underlying vadose zone;
9. Asphalt and asphalt recycling plants, and cement concrete plants; and
10. Machine shops, metal finishing/fabricating, metal plating and electroplating.
B. The following uses shall be prohibited within the designated one-, five- and ten-year time of travel zones:
1. Landfills (municipal sanitary solid waste and hazardous waste), demolition (inert), and wood waste;
2. Chemical/hazardous waste manufacturing, reprocessing, transfer, storage and disposal facilities;
3. Wood and wood products preserving; and
4. Retail gas stations and non-retail fueling stations without attendant (i.e., operated with no attendant on site to respond to fuel spills related to the dispensing of gasoline or equipment failure).
C. The following uses may be restricted on a case-by-case basis in the designated five-year time of travel zone:
1. Deep underground injection control (UIC) wells that extend below an upper confining layer and discharge stormwater into the underlying vadose for a production well that is rated as having a higher susceptibility to contamination, by the water system or by the Washington State Department of Health. (Ord. 1638 §16, 2023; Ord. 1505 §44 (part), 2017).