Benefits and Challenges of Design-Build - Design-Build for Water and Wastewater Projects - page 22

economically and environmentally viable through the use of sound design practices
and the use of sustainable materials.
This facility was constructed in a sensitive wetlands habitat. Minimizing the
project footprint, beyond conventional site evaluation methods, became an integral
part of the design. To achieve the tightest footprint, the design reused as many exist-
ing facilities as possible and also incorporated many vertical features. For instance,
normally ozone treatment requires large covered concrete structures for contact time.
The design converted two existing pipelines into the ozone contact system. This
reduced the environmental impact of construction in a sensitive habitat, streamlined
permitting, and cut project costs. CH2M HILL also partnered with the UV vendors
to design the first vertical equipment configuration.
In 2006, SPU and CH2M HILL were recognized by the National Council for
Public-Private Partnership for their use of best practices and approaches as related
to public-private partnerships.