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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
$786.48M Total
Expenditures/Funding
$734.91M 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.
Budget Snapshot
$786.48M Total
Expenditures/Funding
$734.91M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP113803
Date Last Modified11/02/22
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 FY22Est FY23Total 6 YearsFY 24FY 25FY 26FY 27FY 28FY 29Beyond 6 Years
Planning, Design and Supervision634030692156482767382918812954910310118470
Land00000000000
Site Improvements and Utilities00000000000
Construction6515770399536116246444177693842111111151377981363660
Other7149704689668087212859893021206314811148220
Total Expenditures78647705156373491479326945821023251327271629191630350
FUNDING (000s)
Funding SourceTotalThru FY22Est FY23Total 6 YearsFY 24FY 25FY 26FY 27FY 28FY 29Beyond 6 Years
WSSC Bonds78647705156373491479326945821023251327271629191630350
Total Funding Sources78647705156373491479326945821023251327271629191630350
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 23 Request45675
Year First AppropriationFY11
Appropriation FY 24 Request79326
Last FY's Cost Estimate576383
Cumulative Appropriation475330
Expenditure / Encumbrances0
Unencumbered Balance475330