Kitsap County Board of Health Ordinance 2008A-01 - Kitsap Public ...

Kitsap County Board of Health Ordinance 2008A-01, Amended June 7, 2011
Onsite Sewage System and General Sewage Sanitation Regulations
5. Treatment Component Tank or Vessel Requirements.
a) Treatment components shall have a minimum liquid capacity, or design
size, to meet the daily design capacity for the proposed development;
b) The selection of treatment components shall meet the minimum level of
treatment performance as required by Table 3 in Section 10.E.; and
c) The selection of treatment components shall meet the intended use of the
proposed development.
d) Treatment component tanks or vessels shall be designed to meet the
construction requirements in Section 12.D.5.
6. Soil Dispersal Components.
a) All soil dispersal components shall meet the following requirements:
(1) Consist of enough designated area to enable the construction of 100
percent-sized primary and reserve areas based upon the type of soil
dispersal component utilized, and include the required setback
distances between trenches or beds of the same system;
(2) Be orientated with the natural soil contours (i.e., perpendicular to the
direction of slope) such that the infiltrative surface can be constructed
level to within a tolerance of plus or minus one inch (excluding drip
irrigation);
(3) Be located a minimum of five (5) feet away from the nearest sewage
tank or vessel;
(4) Be located at least 30 inches away from the nearest distribution box;
(5) Distribution boxes shall be located at least 30 inches from the nearest
sewage tank or vessel;
(6) A minimum of six (6) inches of sidewall must be located in native,
undisturbed soil, except for serial distribution configurations where a
minimum 12 inches of sidewall must be located in original
undisturbed soil, as measured on the down-slope side of the trench;
(7) The infiltrative surface may not be deeper than three (3) feet below
the finished grade, except under special conditions approved by the
Health Officer. In such instances, the depth of such system shall not
exceed ten feet from the finished grade;
(8) Include a layer of suitable cover material between six (6) and 24
inches, with a finished grade that will divert surface water away from
the soil dispersal component;
- 37 -