18.40.030 Building site area determined by percolation tests.
(a) In subdivisions requiring soil percolation tests, the Health Department shall exercise adequate control for the protection of public health, and in its recommendation to the Planning Commission minimum requirements will be recommended that are necessary for this protection.
(b) The following shall be the basis for the determination of building site areas in subdivisions requiring soil percolation tests:
|
Building site area |
Soil percolation rate |
|
|---|---|---|
|
(1) |
One-half acre |
One inch per hour |
|
(2) |
One acre |
One-half inch per hour |
|
(3) |
One and one-half acres |
One-quarter inch per hour |
|
(4) |
Three acres |
Less than one-quarter inch per hour |
(c) Each building site in the subdivision shall be subject to the following restrictions:
(1) The minimum distance from any septic tank and lateral field to:
|
(i) |
Water supply |
50 feet |
|
(ii) |
Watercourse |
25 feet |
|
(iii) |
Dwelling or property line |
10 feet |
(2) The minimum distance from water wells and underground storage reservoirs to:
|
(i) |
Watertight cast iron or drain line |
20 feet |
|
(ii) |
Dwelling or property line |
25 feet |
|
(iii) |
Vitrified-clay or concrete sewer line, septic tanks or lateral field |
50 feet |
(d) The Health Department shall approve all site and test locations for the subdivision, and the design of septic tanks and lateral field systems. Prior to the completion of installation of any septic tank and lateral field system, the Health Department shall inspect and approve such installation prior to the issuance of an occupancy permit. (Code 1981 § 41-91. Code 1995 § 134-133.)
Cross References:Planning Commission, Chapter 2.225 TMC.