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 Thurston County
 Code of Ordinances
 Title 24. CRITICAL AREAS
 Chapter 24.25. FISH AND WILDLIFE HABITAT CONSERVATION AREAS

  § 24.25.260. On-site sewage disposal systems—Repair/Replacement.  

Latest version.

  • A.

    Failing on-site sewage disposal systems shall be remedied through compliance with Article IV of the Thurston County Sanitary Code and the method that results in the least impact to the important habitat area and associated buffer. Replacement sewage disposal systems shall not be allowed within the riparian habitat area, marine riparian habitat area, or pond buffer unless there is no alternative site available outside of such areas to accommodate the facilities. Clearing of existing vegetation to remedy the failing system shall be limited to the minimum area necessary for the replacement system.

    B.

    If the failing sewage disposal system must be replaced with a new on-site sewage disposal system, when possible, it shall be located on a portion of the site that has been disturbed by development and as far from any water body, priority species habitat, and any documented one-hundred-year channel migration zone as possible (see Chapter 24.20 TCC, Frequently Flooded Areas). The approval authority may require the applicant to demonstrate that due to physical constraints (e.g., topography, soil conditions, or the configuration of the site), another site configuration would not allow the development to occur without intrusion or with less intrusion into the important habitat area and associated buffer than the proposal.

    C.

    If a suitable disturbed area is not available to accommodate the on-site sewage system, it shall be located where it would be least harmful to the important habitat, as determined by the approval authority in consultation with WDFW.

    D.

    Replacement on-site sewage systems and sewer lines shall be consistent with applicable provisions of Article IV of the Rules and Regulations of the Thurston County Board of Health Governing Disposal of Sewage, and the applicable provisions of this chapter.

    E.

    Regular maintenance such as septic pumping, mechanical repairs and inspections are allowed without critical area review permits.

(Ord. No. 14773, § 3(Att. B), 7-24-2012)