C150243 Contract

• Contract/PO #: C150243
• Contractor Name: Aurora, City of
• Contract Type: Loan
• Water District: 0
• County: Adams
• Bill Number: SB 07-122
• Loan Projects - Doc Type: Contract Documents

Construction Staging Areas
A construction staging area for the Segment 3 pipeline alignxnent will be provided at the
northeast corner near the intersection of Jewell Avenue and Monaghan Road. The site was
selected for construction staging because it is not farmed and has paved road access
midway along the alignment.
Existing Land Use and Future Development
Land use along the 8.8-mile Segment 3 corridor from the PS-3 site to the ARWPF is mostly
undeveloped with some adjacent dry land agriculture. The Monaghan Road alignment
crosses four proposed subdivisions (Trails at First Creek, Sand Creek Ranch, Eastern Hills,
and Coal Creek Reserve), which have been annexed into the City and which have submitted
preliminary development plans. The annexation agreements require the developer to
dedicate ROW prior to development, eliminating the need for easement acquisition for
construction of Segment 3 along part of the Monaghan alignment.
Development along the Monaghan Road corridor is not expected for another four to eight
years and is not expected to affect construction of the pipeline.
Special Crossings
In addition to the USACE jurisdictional crossing at Coal Creek, two other special crossings
are included in Segment 3. Monaghan Road and Quincy Avenue will be constructed as
trenchless crossings to maintain traffic safety during construction. Local geotechnical
conditions indicate that these crossings are technically feasible.
Conveyance System Cost Estimates
Construction cost estimates prepared at the 90%design level, and design costs encumbered
by Aurora Water for the conveyance system, are listed by bid package in Table 1 below.
TABLE 1. Construction Cost Estimates and Encumbered Design Costs for PWP Pipelines and Pump Stations
Bid Package E— Pumping Stations 1, 2 and 3
Bid Package G— Conveyance Pipeline Segment 1
Bid Package H— Conveyance Pipeline Segment 2
Bid Package I— Conveyance Pipeline Segment 3
Total
Construction Cost
Original
Estimate
$87,800,000
$115, 900,000
$82,300,000
$51,300,000
$337,300,000
After Value
Engineering
$57,800,000
$75,900,000
$62,300,000
$41,300,000
Encumbered
Design Cost
$4,181,604
$2,640,734
$2,545,093
$1,726,837
$237,300,000 $12,502,306
Aurora Water and the Program Management team continue to value engineer these
elements of the PWP, to determine if revisions to design criteria could further reduce the
cost of the pipeline and pumping stations without compromising the long-term
functionality and reliability of the system. Depending on which if any additional value
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