A. Where existing approved community interim treatment and disposal facility capacities are available, extension of and connection of collection sewers to the existing facilities may be required. Sewer systems so constructed shall be dedicated to the city. The systems shall be maintained and operated by the department of public works of the city. A monthly sewer service charge shall be levied as provided for in Chapter 13.16.

B. Where approved existing community interim facilities are not available, and yet where soil permeability will permit subsurface disposal of settled sewage effluent in conformance with the standards of the Thurston County health department or where there is some other means of safe disposal of effluent, as approved by the director of public works of the city, the State Department of Ecology, the State Health Department and the Thurston County health department construction of sewerage systems utilizing interim means of treatment and disposal which meet design criteria and construction standards may be required. All collection sewers, permanent pumping stations and all other sewer appurtenances shall conform with the applicable basin sewerage general plan. The systems shall be dedicated to and maintained and operated by the city, for which service a monthly sewer service charge shall be levied as provided for in Chapter 13.16 of the Lacey Municipal Code. Plans must be submitted to the Lacey director of public works for approval before construction of an interim sewer system, and these plans must include written approval of the Thurston County health department and the Washington State Department of Ecology.

C. Interim individual waste water disposal units (septic tanks) may be permitted where soil conditions will allow conformance with Thurston County health department standards for subsurface disposal; provided there is concurrent construction of, or provision for, a collection sewer (dry sewer) which meets prescribed design criteria for future extension and connection to a major drainage basin sewerage system together with construction of the building sewer to the property line. Subject to other zoning restrictions, the minimum lot size permitted under this condition of development will be twelve thousand square feet.

Where it is deemed by the director of public works of the city to be impractical, uneconomical or otherwise imprudent to require concurrent construction of the above required collection sewer system, the payment of all applicable sewerage general facilities charges as may be established by the city council, shall constitute adequate provision for the required collection sewer system. Operation and maintenance of an interim individual waste water disposal system shall be the responsibility of the owner. (Ord. 877 §3 (part), 1990; Ord. 281 (part), 1973).