A. 
Aquifer recharge areas consist of areas that provide a source of potable water and contribute to stream discharge during periods of low flow, as defined in Chapter 20.20 SMC.
B. 
The primary purpose of aquifer recharge area regulations is to protect aquifer recharge areas by providing for regulation of land use activities that pose a risk of potential aquifer contamination and to minimize impacts through the application of strict performance standards.
(Ord. 856 § 2 (Exh. B), 2019)
A. 
Aquifer recharge areas shall be designated and classified based on the soil and ground water conditions and risks to surface water during periods of low hydrology. Classification depends on the combined effects of hydrogeological susceptibility to contamination and contaminant loading potential, and includes upland areas underlain by soils consisting largely of silt, clay or glacial till, upland areas underlain by soils consisting largely of sand and gravel, wellhead protection areas, and areas underlain by soils consisting largely of sand and gravel in which there is a predominantly downward or lateral component to ground water flow.
B. 
At the time of adoption of the amendments to the critical areas of this Master Program, through Ordinance No. 856, there were no identified critical aquifer recharge areas within the city.
(Ord. 856 § 2 (Exh. B), 2019)
Subject to the required permits, the following land uses and activities shall require implementation of best management practices (BMPs) as established by the Department of Ecology:
A. 
Land uses and activities that involve the use, storage, transport, or disposal of significant quantities of chemicals, substances, or materials that are toxic, dangerous, or hazardous, as those terms are defined by State and Federal regulations;
B. 
On-site community sewage disposal systems;
C. 
Underground storage of chemicals;
D. 
Petroleum pipelines;
E. 
Solid waste landfills; and/or
F. 
Stormwater management, including infiltration, and ground water recharge.
(Ord. 856 § 2 (Exh. B), 2019)
Any uses or activities that seek to be located in an aquifer recharge area, as defined within this subchapter, which involve the use, storage, transport, or disposal of significant quantities of chemicals, substances, or materials that are toxic, dangerous, or hazardous, as those terms are defined by State and Federal regulations, shall comply with the following additional standards:
A. 
Underground storage of chemicals, substances or materials that are toxic, hazardous, or dangerous is discouraged.
B. 
Any chemicals, substances or materials that are toxic, hazardous, or dangerous shall be segregated and stored in receptacles or containers that meet State and Federal standards.
C. 
Storage containers shall be located in a designated, secured area that is paved and able to contain leaks and spills, and shall be surrounded by a containment dike.
D. 
Secondary containment devices shall be constructed around storage areas to retard the spread of any spills and a monitoring system should be implemented.
E. 
A written operations plan shall be developed, including procedures for loading/unloading liquids and for training of employees in proper materials handling.
F. 
An emergency response/spill cleanup plan shall be prepared and employees properly trained to react to accidental spills.
G. 
Any aboveground storage tanks shall be located within a diked containment area on an impervious surface. The tanks shall include overfill protection systems and positive controls on outlets to prevent uncontrolled discharges.
H. 
Development should be clustered and impervious surfaces limited where possible.
I. 
No waste liquids or chemicals of any kind shall be discharged to storm sewers.
J. 
All development shall implement best management practices (BMPs) for water quality, as approved by the City, including the standards contained within the adopted stormwater manual, such as biofiltration swales and use of oil-water separators, and BMPs appropriate to the particular use proposed.
(Ord. 856 § 2 (Exh. B), 2019)