A. 
Parcels created after the effective date of the ordinance codified in this chapter shall have a minimum size of two acres if using both an on-site wastewater treatment and private well. Parcels connecting to a public water system but requiring the use of on-site wastewater treatment shall have a minimum parcel size of one acre.
B. 
Lot line adjustments and subdivisions to existing parcels currently serviced by on-site wastewater treatment systems shall be prohibited when such actions interfere with the original siting, design, construction, or operation of an existing system including the reserve disposal field area. The applicant for such project may be subject to a system evaluation as defined in Section 6.32.030 of this chapter.
C. 
Parcels created prior to the effective date of the ordinance codified in this chapter that do not meet the one-or two-acre requirement of subsection A, such as those found in the Delta and Rio Linda/Elverta areas, and parcels along the water side of the Garden Highway are exempt from the minimum parcel size requirements described in subsection A.
1. 
At a minimum, new on-site wastewater treatment systems to be installed on undeveloped parcels created prior to the adoption of the ordinance codified in this chapter shall be subject to the rules and regulations in place prior to the adoption of the ordinance codified in this chapter, provided the installation will not pose a public health hazard, or impair surface or groundwater quality.
(SCC 1465 § 2, 2010)
A. 
No parcel shall be improved beyond its capacity to properly absorb sewage effluent by the means provided in this chapter.
B. 
Unless otherwise stated in subsection E, any person proposing to develop property that requires the use of an on-site wastewater treatment system, whether for new construction, remodel, addition or replacement must first obtain approval from the Department. The person proposing such development shall submit to the Department a copy of the general plot plan and a copy of the floor plan for project evaluation. The plans shall comply with Section 6.32.220 of this chapter and may be subject to a plot plan review fee. A site evaluation or system evaluation pursuant to this chapter may be required by the Department prior to plan approval.
C. 
A site evaluation or system evaluation as stated in subsection B, may be waived by the Department for building projects and changes in use if:
1. 
The department has sufficient knowledge of site and soil conditions supporting the use of a new on-site wastewater treatment system; or
2. 
The parcel is currently serviced by an on-site wastewater treatment system, and the Department has sufficient information on file for the system to determine that:
a. 
The existing on-site wastewater treatment system is able to accommodate the potential increase in wastewater flow or wastewater strength, and
b. 
The project will not significantly impact the initial or replacement disposal field areas or restrict access to any serviceable component of the on-site wastewater treatment system including, but not limited to, a septic tank, pump tank, or distribution box.
D. 
Unless otherwise stated in subsection E, a use permit or building permit shall not be issued for a parcel, place of business, or building project requiring the use of a new or existing on-site wastewater treatment system without prior approval from the Department.
E. 
Department approval shall not be required when the building project or change in use does not:
1. 
Increase the existing structure's footprint;
2. 
Add additional bedrooms or increase seating capacity;
3. 
Increase wastewater strength beyond that of domestic strength wastewater;
4. 
Add additional structures or outside fixtures which may impact any component of an existing on-site wastewater treatment system including the reserve disposal field area. Such structures and outdoor fixtures shall include, but are not limited to, garages, barns, sheds, built-in swimming pools, and driveways.
(SCC 1465 § 2, 2010)