Washington Administrative Code
Title 246 - Health, Department of
SEWER SYSTEMS
Chapter 246-272B - Large on-site sewage system regulations
Part 5 - CONSTRUCTION REQUIREMENTS
Section 246-272B-05100 - Construction oversight and testing
Universal Citation: WA Admin Code 246-272B-05100
Current through Register Vol. 24-24, December 15, 2024
The design engineer or the engineer's authorized representative shall:
(1) Conduct inspections to:
(a) Verify LOSS construction
and materials conform with approved plans and specifications; and
(b) Collect data for the record
drawings.
(2) Inspect the following:
(a) Poured-in-place sewage
tanks construction;
(b)
Installation of proprietary and public domain treatment and dispersal
components;
(c) Installation of
LOSS components in difficult conditions including, but not limited to, steep
slopes and shallow soils; and
(d)
Placement of sand or other fill material.
(3) Conduct or witness LOSS component testing to verify that all results fall within acceptable limits:
(a) Water tightness testing of all tanks
under WAC
246-272B-05200; and
(b) Pressure testing of all new collection
and conveyance piping according to an acceptable industry standard; and
either
(c) Pressure and flow
testing of the subsurface drip system to verify it functions properly prior to
scheduling a LOSS final inspection by the department; or
(d) Pressure testing of the drainfield to
verify it functions properly prior to scheduling a LOSS final inspection by the
department.
(4) Record baseline pressure and flow information and provide passing results to the department during the final inspection.
Statutory Authority: RCW 70.118B.020. 11-12-035, § 246-272B-05100, filed 5/25/11, effective 7/1/11.
Disclaimer: These regulations may not be the most recent version. Washington may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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