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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
$489.51M Total
Expenditures/Funding
$446.21M 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
$489.51M Total
Expenditures/Funding
$446.21M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP113803
Date Last Modified08/23/19
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 FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Planning, Design and Supervision5892506472524538301831488269154870891500
Land00000000000
Site Improvements and Utilities00000000000
Construction3860820328933531894455253324606516277364970669190
Other4450203936405665286616569497193736776060
Total Expenditures4895090433014462085813967803764267912081045836750
FUNDING (000s)
Funding SourceTotalThru FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
WSSC Bonds4895090433014462085813967803764267912081045836750
Total Funding Sources4895090433014462085813967803764267912081045836750
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 21 Request58139
Year First AppropriationFY11
Appropriation FY 22 Request0
Last FY's Cost Estimate433056
Cumulative Appropriation309835
Expenditure / Encumbrances0
Unencumbered Balance309835