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173-240-030  <<  173-240-035 >>   173-240-040

PDFWAC 173-240-035

Restrictions—Subsurface disposal systems.

Domestic wastewater facilities using subsurface sewage treatment and disposal, as defined in WAC 173-240-020(5), are prohibited except under those extraordinary circumstances where no other reasonable alternatives exist and: Providing that
(1) The facility is owned, operated, and maintained by a public entity, except as noted in WAC 173-240-104; and
(2) Adequate facility construction oversight is provided by the public entity; and
(3) The proposed project is consistent with local health and land use rules; and
(4) Loading rates do not exceed 1,570 gallons per day per acre of gross land area in medium sands or finer grained soils and may not exceed 900 gallons per day per acre of gross land in coarser grained soils or other soils where conditions do not provide for adequate treatment. For the purposes of this section gross land area is defined as the contiguous land area of a proposed development that might include the centerline of adjoining road or street right-of-ways.
[Statutory Authority: RCW 90.48.110. WSR 00-15-021 (Order 00-09), § 173-240-035, filed 7/11/00, effective 8/11/00. Statutory Authority: Chapters 43.21A and 90.48 RCW. WSR 83-23-063 (Order DE 83-30), § 173-240-035, filed 11/16/83.]
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