Fort Lupton WCPlan 2007

• Project Type: Water Conservation Plan
• Contract/PO #: OE PDA 07-17
• Applicant: City of Fort Lupton
• Project Name: City of Fort Lupton Water Conservation Plan
• Title: City of Fort Lupton Water Conservation Plan
• Date: 8/1/2007
• County: Weld
• Water Conservation - Doc Type: Complete Plan

CHAPTER 5 - PROFILE OF PROPOSED FACILITIES

Potential Facility Needs

Raw Water StoraGe

Mountain water from the Southern Water Supply Pipeline is gravity fed to the City
WTP via a 20-inch transmission line, owned and operated by NCWCD.
Currently, the City has a right to convey a peak flow equal to 9.6 cfs (6.2 MGD),
of which Hudson owns 1/6th (1.6 cfs or 1.0 MGD). The water is either stored in a
0.5-MG raw water tank at the WTP or fed directly into the WTP feed well. This
0.5 MG, under current max-day demands, represents approximately four hours of
raw water storage. The limited amount of available mountain water storage at
the WTP presents some concern. For example, if the Southern Water Supply
Pipeline experiences a shutdown, break or other emergency along its multi-mile
route, the City of Fort Lupton and Hudson will have a minimal water supply to
feed the plant. This problem will be exacerbated as the treatment plant capacity
is increased, i.e. the amount of emergency-reserve time operators can feed the
system will decrease.

At a minimum, we recommend the WTP have at least two to three days of
mountain water storage capacity to provide a supply of water to residents during
emergencies and routine maintenance of the NCWCD pipeline. The most cost-
effective means to provide this storage is through an online or offline storage
reservoir. To provide three days of storage at 9.6 cfs requires a 60 ac-ft
reservoir. However, there needs to be a sufficient "dead pool" of water in the
reservoir to maintain sufficient water quality. Thus, we recommend the City
prioritize the construction of a 100 ac-ft reservoir at the WTP.

Table 5.1 -100 ac-ft Mountain Water Storage Reservoir, Opinion of Probable Construction
Costs

Item
Mob/Demob and general contract requirements
Miscellaneous demolition and removal
Land Acquisition
Reservoir earthwork, lining, sitework
Telemetry system
Transfer pumps and piping

Quantity
1
1
20
100
1
1

Unit
LS
LS
acres
Ac- ft
LS
LS

Unit Cost
$50,000
$50,000
$20,000
$3,000
$50,000
$200,000

Subtotal
Design and Construction Contingencies (20010)
Contractors Overhead and Profit (15010)
Construction Cost Subtotal
Engineering - Design Phase Services (8010)
Engineering - Construction Phase Services (4010)
Total

Clear Water Solutions, Inc.
City of Fort Lupton
2007 Water Conservation Plan

Item Cost
$50,000
$50,000
$400,000
$300,000
$50,000
$200,000
$1,050,000
$210,000
$157,500
$1,417,500
$113,400
$56,700
$1,587,600

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