HomeMy WebLinkAboutSyrbuJonesAve3 (3)June 5, 2016
Mr. Vyachaslau Syrbu
1917 Jones Avenue NE
Renton, WA 98056
Re: Geotechnical Recommendations
Existing Slope Stabilization
1917 Jones Avenue NE
Renton, Washington
Dear Mr. Syrbu,
As requested by the City of Renton I have evaluated the existing slope that has been covered with fill soils that have experienced recent sliding over the lower retaining wall. It is
understood that new retaining walls will not be allowed due to the steepness of this slope, and that slope conditions must be stabilized to prevent future sliding of the surficial fill
soils.
This report provides recommendations for slope stabilization in lieu of installing a new retaining wall for slope support. The most reasonable option involves removing the existing
fill soils on this slope that has been subject to surficial failure. The native glacial recessional deposits are intact and have not been adversely affected by the downslope movement
of the overlying fill soils.
Depths of fill soils removal on this slope is expected to vary from 3 to 6 feet with most of this fill existing near the top of the slope where the rear yard was extended. Field inspections
will be required to confirm adequate removal of the loose fill soils to expose the medium dense native soils. Landscape planting must be accomplished after placement of a coarse filter
cloth that will provide additional erosion protection to this slope. Please call me if there are any questions.
Respectfully,
Robert M. Pride, P. E.
Principal Geotechnical Engineer
dist: (1) Addressee rmp: SyrbuJonesAve3