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Marian's Park Rehabilitation
 The
contract for Marian’s Park Pipe Rehabilitation Project was awarded to Buno Construction
at a cost of $680,000.00. Sixty years of use has caused the original concrete pipes to
deteriorate. Most of the old concrete sewer lines were installed in 1947 and 1948. The new
plastic pipe is designed to have a life expectancy that far exceeds the original concrete
pipe.
A total of 3,220 lineal feet of sewer main line will be replaced. In addition, lateral
lines to the properties will be replaced and manholes will either be replaced or
rehabilitated. The entire project is scheduled to be completed in 45 days with an overlay
following in Spring of 2007.
The construction schedule called for a September 18th start, with an open cut along SW
106th St. In addition to open cutting, the District will utilize two trenchless methods:
pipe bursting and pipe lining known as Cure-in-Place Piping. The two trenchless methods
will be utilized throughout most of the project area.
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Evergreen Heights Project
 The
District is trying to acquire a $325,000.00 grant from the Community Development Block
Grant Program to partially fund the Evergreen Heights Project located in the Top Hat area.
The District’s project cost is estimated at $1.3 million dollars and funding will
alleviate some of the cost which is passed along to property owners. The Evergreen Heights
area sits adjacent to King County Housing Authority’s Greenbridge Project and consists
of 110 residents all on septic systems, many failing. The area is similar to an island in
that it is surrounded by sewers. Lying within a critical aquifer recharge area, failing
septic systems subject the aquifer to contamination.
The project will be divided into two phases and constructed over a 2-3 year period. The
first phase will begin in January 2007 with completion by the end of the year. This phase
will involve approximately 3100 lineal feet of new sewer main and 32 manholes to serve 42
properties. The Consortium’s recommendation for block grant funding is due this fall.
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Chelsea Park Pipe Rehabilitation
 The
District recently requested engineering proposals for a pipe rehabilitation project in the
Chelsea Park area. The walls of the concrete sewer pipe have become thin and brittle and
infiltration and inflow surcharges the lines during heavy rain events.
Four proposals were reviewed, with ingenuity weighing heavily in the decision. The
engineering project was awarded to Roth Hill; their proposal was not only the lowest but
utilized ingenuity that enabled what was originally a two year project to be completed in
one year. They propose to rehabilitate a majority of the project utilizing trenchless
methods.
The District will pay for the project with monies received through a Public Works Trust
Fund Loan, a low interest loan designed for rehabilitation projects. The project is
currently in design and will begin sometime in the Spring of 2007. |
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