Design-Build Contract Risk Allocation - Design-Build for Water and Wastewater Projects - page 121

biochemical oxygen demand and total suspended solids permit limits. After six
weeks, the facility was also meeting ammonia limits. Since that time, the facility has
shown its ability to meet permit limits with influent temperatures as low as 4.6 °C.

Summary of Schedule Performance

Item Contracted Actual Difference

Start Date May 19, 2008 May 19, 2008 0 days

Treatment Facilities
Substantial Completion
Date

Aug. 19, 2009 Jan. 19, 2009 212 days ahead

of schedule

Solids Handling Facilities
Substantial Completion
Date

Aug. 19, 2009 May 1, 2009 110 days ahead

of schedule

The project experienced excellent cost performance, which was a result of fin-
ishing ahead of schedule as well as excellent field production, efficient scheduling
and sequencing, development of competitive bid packages, and achieving critical
milestones. During execution of the work, the District requested various enhance-
ments to the project. A total of four change orders were executed with two of the
change orders being deductive. The Fairplay Sanitation District finished the project
at essentially the original guaranteed maximum price of $5,051,030 despite having
enhanced the project with what equates to $232,400 of additional work.