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Current Major Construction Projects
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South 208th Street AC Main Replacement
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This project will replace approximately
1,100 feet of 4 inch asbestos concrete pipe and approximately
7,550 feet of 6' asbestos concrete pipe in South 208th Street
from 107th Ave SE to 96th Ave SE and some associated lines
southwest of 108th Ave SE & South 208th Street. The pipes
were installed in the late 1950's and 1960's and have reached
the end of their useful life. We have had several breaks
in the area and have determined that the pipe is soft and
needs to be replaced. Currently the 6" pipe on South 208th
street is shown in our Comprehensive Plan to be increased
to 12" and most of the associated lines would increase to
8" for better fire flow.
We are currently in the construction
phase and should be completed by April 2010.
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Lift Station 5B Force Main Replacement
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Deficiencies in the existing west sewer
forcemain at the District's Lift Station (LS) #5B necessitated
replacement of the sewer forcemain. The existing 12-inch
ductile iron forcemain was approximately 4,000 feet long
and tied into a gravity system located in SE 196th Street.
The deficiencies in the pipe include severe pitting at the
bottom of the forcemain pipe, causing the pipe integrity
to be compromised. The District decided to replace the 4,000
feet of existing sewer forcemain with 18-inch and 12-inch
HDPE forcemain. The 18-inch HDPE sewer forcemain replacement
Started at existing LS #5B, then west in SE 198th Place,
and then north in 124th Avenue SE to SE 196th Street. At
that point, a 12-inch HDPE sewer forcemain extends west
along SE 196th Street with connection to the existing gravity
sewer manhole located west of 119th Avenue SE.
This project was completed in October
2009.
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Lake Desire Watermain Replacement and Low Pressure Sewer
Installations
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This project began construction in the
June of 2008. The 6" and 8"asbestos concrete water main
around the lake was installed in 1965; it was replaced with
8" ductile iron pipe, new water service lines, valves and
fire hydrants. Along with this replacement, the District
installed a low pressure grinder pump system to convey sewage
to an existing gravity sewer system.
Upon completion of this work the roads
around the lake were overlaid.
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Cascade Vista Phase 1 AC Main Replacement
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This project will replace approximately
10,900 feet of 6 inch AC pipe with 8 inch ductile iron and
approximately 300 ft of 4 inch AC pipe with 4 inch ductile
iron, along with water services, valves and fire hydrants
in the Cascade Vista area. The pipes were installed between
1950 and 1961 and have reached the end of their useful life.
We have had several breaks in the area and have inspected
the pipe at numerous locations. We have determined that
the pipe is soft and needs to be replaced.
This project is starting construction
in January 2010 and should be complete by May 2010.
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