Cosmopolitan
Engineering Group was selected
for the predesign and design of the South Magnolia
Outfall Replacement Project for King County. The
project included construction of 870 linear feet
of 36-inch-diameter RCP outfall pipe to replace
two existing failed CSO outfalls. Two underwater
reconnaissance dives were performed to evaluate
the condition of the existing outfalls. After
the contract was awarded, the County decided to
fast track the project for construction in summer
1999. In order to meet the revised schedule, the
project was separated into pipe purchase and pipe
installation contracts, requiring preparation
of two separate sets of contract documents.
Landscape
Architecture Element |
Project
tasks included predesign analysis of outfall terminus
point, hydraulic analysis, evaluation of pipeline
materials, design, preparation of contract drawings
and technical specifications, permit assistance
for both upland and marine construction, preparation
of estimates of probable construction costs, review
of submittals, and assistance during construction.
The project included removal of two existing failed
outfalls in the intertidal zone to enhance the
public beach. |
| Project
elements: |
|
Alternatives
evaluation |
|
Hydraulic
analysis |
|
Water
quality evaluation |
|
Sensitive
area evaluation |
|
Permit
assistance |
|
Value
engineering |
Project
accomplishments: |
|
Water
quality analysis |
|
Fast-track
schedule |
|
Separate pipe procurement and installation
contracts |
|
Minimized
impacts to sensitive areas |
|
Enhanced
existing public use areas |
|
Construction
engineering services |
|
