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Budget Year / Version:  
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Description

The purpose of this program is to plan, design and rehabilitate or replace Large Diameter Water Transmission Mains that have reached the end of their useful life. Condition Assessment and or corrosion monitoring is performed on metallic pipelines, including ductile iron, cast-iron and steel, to identify areas requiring replacement or rehabilitation. The PCCP Inspection and Condition Assessment Program identifies individual pipe sections that require repair or replacement for maintenance purposes to assure the continued safe and reliable operation of the pipeline. The program also identifies mains that require the replacement of an increased number of pipe sections in varying stages of deterioration that are most cost effectively accomplished by the replacement or rehabilitation of long segments of the pipeline for the entire pipeline. Rehabilitation or replacement of these mains provides value to the customer by minimizing the risk of catastrophic failure and ensuring a safe and reliable water supply. The Program includes installation of Acoustic Fiber Topic Monitoring equipment in order to accomplish these goals. *Expenditures for Large Diameter Pipe Rehabilitation Are Expected to Continue Indefinitely.
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Phase

Planning Stage

Status

Active
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Budget Snapshot
$576.38M Total
Expenditures/Funding
$521.86M 6 Year Total
Expenditures/Funding
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Justification

Utility Wide Master Plan, (December 2007); 30 Year Infrastructure Plan (2007). Specific Date: WSSC has approximately 960 miles of larger diameter water main ranging from 16-inch to 96-inch diameter. This includes 350 miles of cast-iron, 225 miles of ductile iron, 35 miles of steel and 350 miles of PCCP. Of the 350 miles of PCCP, 150 miles are 36-inch and larger, and 55 miles or greater than 54-inch or larger. The inspection program includes internal visual and sounding, sonic/ultrasonic and electromagnetic testing to establish the condition of each pipe section and determine if maintenance repair, rehabilitation, or replacement are needed.
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Other

The project scope was developed for the FY 2011 CIP and has a total project cost of $60,000.00. Expenditures are schedule projections shown in Block B above are Order of Magnitude estimates and are expected to change based upon the results of the inspections and condition assessments. Additional costs associated with inspection/monitoring and emergency repairs are included in the operating budget.
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Budget Snapshot
$576.38M Total
Expenditures/Funding
$521.86M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP113803
Date Last Modified05/24/22
Administering AgencyW.S.S.C.
CategoryWSSC
SubCategoryWater Bi-County
Planning AreaCountywide
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Total Expenditures by Cost Element (000s)
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Total Funding by Source (000s)
EXPENDITURES (000s)
Cost ElementsTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
Planning, Design and Supervision6587207240586327607935097641051810528108650
Land00000000000
Site Improvements and Utilities00000000000
Construction4581110423284157833391558844615058339392975851510
Other52400049574744341536821712693911035196010
Total Expenditures5763830545255218584567575015783951033021138541056170
FUNDING (000s)
Funding SourceTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
WSSC Bonds5763830545255218584567575015783951033021138541056170
Total Funding Sources5763830545255218584567575015783951033021138541056170
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 23 Request45675
Year First AppropriationFY11
Appropriation FY 24 Request75015
Last FY's Cost Estimate518952
Cumulative Appropriation429655
Expenditure / Encumbrances0
Unencumbered Balance429655