Dalecarlia Backwash Water Tanks Improvements
Closed Pre-Solicitation Posted
A newer solicitation was posted. See the latest solicitation from .
- Solicitation number
- W912DR21B0008
- Agency
- ENDIST Baltimore US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- No set-aside
Opportunity facts
- NAICS code
- 237110 Water and Sewer Line and Related Structures Construction
- Place of performance
- Washington DC 20016 USA
Notice details come from SAM.gov. Updated .
About this opportunity
This pre-solicitation notice is for construction services for improvements to the Dalecarlia Backwash Water Tanks at the Washington Aqueduct in Washington D.C. The procuring agency is the U.S. Army Corps of Engineers, Baltimore District. The project consists of modifications to supply and waste backwash facilities including construction of drain structures, waterproofing membranes, tank corrosion protection replacements, and electrical and valve replacements. The acquisition will be a 100% total small business set-aside, firm-fixed price construction contract awarded to the lowest priced responsive, responsible bidder. The estimated contract value is $2.7 million and the period of performance is approximately 292 calendar days.
The NAICS code is 237110 for water and sewer line and related structures construction, size standard $39.5 million. The solicitation is anticipated to be issued on or around December 31, 2020 with bids due approximately 30 days later. The Washington Aqueduct provides potable water to over one million people in D.C. and Northern Virginia through its Dalecarlia and McMillan water treatment plants. The project aims to restore infrastructure, improve reliability, and address sanitary deficiencies for the dual media filters and associated backwash water storage tanks and pumping systems at the Dalecarlia WTP.
Notice text
2 versions
Update #2 · Latest ·
PreSolicitation Notice
Project: Dalecarlia Backwash Water Tanks Improvements
Solicitation#:
This is a Pre-Solicitation synopsis notice for firm-fixed price (FFP), Construction services for Dalecarlia Backwash Water Tanks Improvements at the Washington Aqueduct in Washington, DC.
For Information Only: This Synopsis is ONLY A NOTIFICATION that a solicitation is anticipated. All questions regarding this SYNOPSIS must be submitted in writing via email to: Airron.D.Wiggins@usace.army.mil
1. Contract Information: The estimated contract value is $3,600,000.00.
2. Place of Performance: Washington Aqueduct
3901 Donaldson Place, NW
Washington, DC 20016
3. Socio-Economic Category: 100% Total Small Business Set-aside
4. The resulting contract is anticipated to be awarded on or about May 1, 2021 and will have a period of performance of approximately 258 calendar days.
5. Evaluation Information: Award will be made to the lowest responsible, responsive bidder.
6. Submission Information: The estimated solicitation issue date for solicitation W912DR21B0008 is on or about March 31, 2020. Bids are anticipated to be due approximately 30 days from issuance of solicitation.
The U.S. Army Corps of Engineers, Baltimore District (NAB), has been tasked to solicit for and award construction services for Backwash Water Tanks Improvements at the Washington Aqueduct in Washington, DC. The proposed project will be a competitive, firm-fixed-price, contract procured in accordance with FAR 14, Sealed Bidding, via an Invitation for Bid (IFB). Total Small Business set-aside and NAICS 237110, size standard of $39.5 million.
The Washington Aqueduct provides potable water to approximately one million people in the District of Columbia and Northern Virginia. As part of the water treatment and supply system, the Washington Aqueduct maintains and operates the Dalecarlia and McMillan Water Treatment Plants (WTPs).
As part of the water treatment and supply system, the Dalecarlia Water Treatment Plant (WTP) operates dual media filters for water filtration and purification purposes. When the filters are in use, the pressure loss across the media gradually increases and eventually the filter must be cleaned (backwashed) in order to continue functioning within the specified water quality limits. During the filter backwash process, high volumes of water are used to fluidize the filter media and release the trapped solids. At the Dalecarlia WTP, there are two wash water storage tanks known as the Underground Tank and the Elevated Tank, respectively. Wash water is supplied to the wash water storage reservoirs through an altitude valve, located in the Dalecarlia Pumping Station, which simultaneously supplies water to each of the tanks through 24” and 30” cast iron water mains. Wastewater from the backwash process is recycled to the Dalecarlia Forebay via a subsurface Backwash Recovery Pumping Station (BWPRS). The BWPRS operates two centrifugal pumps, which are critical to the Dalecarlia WTP environmental permitting compliance.
The project consists of modifying both the supply and waste backwash facilities to restore their infrastructure, improve reliability and address sanitary deficiencies to include: construction of a drain outlet structure, the installation of a subsurface waterproofing membrane, the replacement of tank corrosion protection system, the installation of new electrical switchgears, variable speed drives, transfer switches, etc., the rehabilitation of altitude valves and the replacement of valves, actuators and actuator control systems.
Update #1 ·
PreSolicitation Notice
Project: Dalecarlia Backwash Water Tanks Improvements
Solicitation#:
This is a Pre-Solicitation synopsis notice for firm-fixed price (FFP), Construction services for Dalecarlia Backwash Water Tanks Improvements at the Washington Aqueduct in Washington, DC.
For Information Only: This Synopsis is ONLY A NOTIFICATION that a solicitation is anticipated. All questions regarding this SYNOPSIS must be submitted in writing via email to: Airron.D.Wiggins@usace.army.mil
1. Contract Information: The estimated contract value is $2,700,000.00.
2. Place of Performance: Washington Aqueduct
3901 Donaldson Place, NW
Washington, DC 20016
3. Socio-Economic Category: 100% Total Small Business Set-aside
4. The resulting contract is anticipated to be awarded on or about February 28, 2021 and will have a period of performance of approximately 292 calendar days.
5. Evaluation Information: Award will be made to the lowest responsible, responsive bidder.
6. Submission Information: The estimated solicitation issue date for solicitation XXXXXXXXXXXX is on or about December 31, 2020. Bids are anticipated to be due approximately 30 days from issuance of solicitation.
The U.S. Army Corps of Engineers, Baltimore District (NAB), has been tasked to solicit for and award construction services for Backwash Water Tanks Improvements at the Washington Aqueduct in Washington, DC. The proposed project will be a competitive, firm-fixed-price, contract procured in accordance with FAR 14, Sealed Bidding, via an Invitation for Bid (IFB). Total Small Business set-aside and NAICS 237110, size standard of $39.5 million.
The Washington Aqueduct provides potable water to approximately one million people in the District of Columbia and Northern Virginia. As part of the water treatment and supply system, the Washington Aqueduct maintains and operates the Dalecarlia and McMillan Water Treatment Plants (WTPs).
As part of the water treatment and supply system, the Dalecarlia Water Treatment Plant (WTP) operates dual media filters for water filtration and purification purposes. When the filters are in use, the pressure loss across the media gradually increases and eventually the filter must be cleaned (backwashed) in order to continue functioning within the specified water quality limits. During the filter backwash process, high volumes of water are used to fluidize the filter media and release the trapped solids. At the Dalecarlia WTP, there are two wash water storage tanks known as the Underground Tank and the Elevated Tank, respectively. Wash water is supplied to the wash water storage reservoirs through an altitude valve, located in the Dalecarlia Pumping Station, which simultaneously supplies water to each of the tanks through 24” and 30” cast iron water mains. Wastewater from the backwash process is recycled to the Dalecarlia Forebay via a subsurface Backwash Recovery Pumping Station (BWPRS). The BWPRS operates two centrifugal pumps, which are critical to the Dalecarlia WTP environmental permitting compliance.
The project consists of modifying both the supply and waste backwash facilities to restore their infrastructure, improve reliability and address sanitary deficiencies to include: construction of a drain outlet structure, the installation of a subsurface waterproofing membrane, the replacement of tank corrosion protection system, the installation of new electrical switchgears, variable speed drives, transfer switches, etc., the rehabilitation of altitude valves and the replacement of valves, actuators and actuator control systems.
Notice history
| Notice | Type | Posted |
|---|---|---|
| Dalecarlia Backwash Water Tanks Improvements | Solicitation | |
| Dalecarlia Backwash Water Tanks Improvements | Pre-Solicitation |
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