§ 20.40.040. Conventional onsite soil absorption systems.

A.

If any lots within a subdivision will utilize conventional onsite soil absorption systems and are less than 200,000 square feet, the following requirements must be met and submitted to the planning director:

1.

A soils analysis and report, sealed by a qualified engineer, which meets the requirements of KPB 20.40.100;

2.

A pollution abatement report, sealed by a qualified engineer, which meets the requirements of KPB 20.40.090 if:

a.

Lot size is less than 40,000 square feet; and

b.

There will not be a public water system serving the subdivision lots as described in KPB 20.40.090(C);

3.

A working map depicting:

a.

Ground slopes greater than 20 percent, or 5 percent where a bed system is proposed, and other topographic features as needed by a qualified engineer to meet the design requirements for wastewater disposal as defined in this chapter;

b.

The location of all soils field work, including the location of borings, percolation tests, and test holes;

c.

Each existing water source for a public drinking water system within the subdivision and within 200 feet of the subdivision boundary;

d.

Each existing water source for a private drinking water system within the subdivision or within 100 feet of the subdivision boundary; and

e.

An approximate delineation of the apparent usable initial wastewater disposal area as described in KPB 20.40.040(A)(4);

f.

An approximate delineation of the apparent usable wastewater disposal area for a replacement system;

g.

An approximate location for a well, with the appropriate radius shown;

4.

Documentation from the engineer that:

a.

There is on each lot at least 20,000 square feet of contiguous area suitable for use for an initial and replacement wastewater disposal system. This area can include driveways, and an average single-family residence with associated appurtenances, but excludes dedicated rights-of-way, public access easements, including section line easements, the panhandle portion of flag lots, and existing well protection zones;

b.

The soil types, moisture content (in areas of known or suspected permafrost), soil slopes, distances to downhill terrain breaks, and depths to seasonal high water table and impermeable strata must:

1)

Meet the requirements of soils analysis and report described in KPB 20.40.100;

2)

Be suitable for use in a soil absorption system, as shown by the soils analysis and report;

c.

Separation distances in or from any part of the proposed usable wastewater disposal area must be maintained as required by 18 AAC 72.020; if an area outside the subdivision boundary cannot be visually inspected to determine existence and position of water system sources, the applicant may use existing records as the basis for this information;

5.

Plans for initial and replacement soil absorption systems for each lot that does not contain 20,000 square feet of contiguous suitable area described in KPB 20.40.040(A)(4); the plans shall show the location of the system(s) and must be sealed by a qualified engineer.

B.

Before a final plat is recorded or filed for subdivision under this section, the borough will require the engineer to sign the following note on the final plat:

WASTEWATER DISPOSAL: Soil conditions, water table levels, and soil slopes in this subdivision have been found suitable for conventional onsite wastewater treatment and disposal systems serving single-family or duplex residences and meeting the regulatory requirements of the Kenai Peninsula Borough. Any other type of onsite wastewater treatment and disposal system must be designed by a qualified engineer, registered to practice in Alaska, and the design must be approved by the Alaska Department of Environmental Conservation.

_____
(Signature of) Engineer   License #   Date

( Ord. No. 2014-02, § 1, 2-11-14 )