Nansemond Treatment Plant SWIFT Improvements

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"Nansemond Treatment Plant SWIFT Improvements"
Nansemond Treatment Plant Advanced Nutrient Reduction Improvements (ANRI), Phase II
Nansemond SWIFT Facility
Nansemond Recharge Wells (On Site)

HRSD Capital Improvement Program Project (NP013820, GN016380 & GN016381)

HRSD, your regional wastewater treatment utility, is implementing the Sustainable Water Initiative for Tomorrow (SWIFT) Program by constructing the second SWIFT Facility at the Nansemond Treatment Plant to produce a highly-treated water (SWIFT Water®) that meets drinking water standards and is suitable for recharge of the Potomac Aquifer. This Program will help reverse declining groundwater levels, significantly reduce the amount of nutrients such as nitrogen and phosphorus entering the Chesapeake Bay, and may reduce saltwater intrusion and land subsidence, thereby helping to ensure HRSD’s ability to protect public health and the environment in alignment with HRSD’s Promise and Vision.

Advanced Nutrient Reduction Improvements (ANRI):
The first step to producing SWIFT Water® is at the Nansemond Treatment Plant Advanced Nutrient Reduction Improvements (ANRI) project. This project will increase the wastewater treatment capacity to 50 million gallons per day (mgd) and provide a higher quality of wastewater. This additional capacity will accommodate the flow from the Boat Harbor Treatment Plant which is closing in 2025. The Boat Harbor Treatment Plant is being converted to a pump station, which will send flow to the Nansemond Treatment Plant. Once the treatment plant upgrades are completed, the final step in the project will be the construction of the Nansemond SWIFT Facility project.

SWIFT Facility:
The SWIFT facility will provide the improvements necessary to produce SWIFT Water® and deliver it to the recharge wells. From the Nansemond SWIFT Facility, HRSD intends to recharge the Potomac Aquifer with up to 34 million gallons a day (mgd) of SWIFT Water®.

Together, the overall goal of the Nansemond projects is to help support growth and protect future generations. To learn more about SWIFT or to schedule a tour of the SWIFT Research Center (located at HRSD’s Nansemond Treatment Plant in Suffolk, VA), please visit www.hrsd.com/swift/.

Project Cost: Approximately $952,000,000

April 30, 2025

ANRI: Construction for the Advanced Nutrient Reduction Improvements project is ongoing. Construction of electrical duct banks continues for all three new electrical buildings along with installation of electrical gear and interior lighting. The interior walls and channels for Primary Effluent Equalization Tanks and two Aeration Tanks continue to be poured. Channel sections for Chlorine Contact Tank #5 has been poured along with the base slabs and distribution boxes for the Primary Gravity Thickener Tanks. Earthwork for the Flow Control Structure, which will connect the secondary clarifiers to the future SWIFT Facility, is underway.

SWIFT: Design work for the SWIFT Facility is now in progress.

The work will be confined to HRSD property; however, construction traffic will be entering and exiting the site on Armstead Road. Most traffic impacts will begin at College Drive and Interstate 664 heading northwest along College Drive to Armstead Road and then following Armstead Road all the way to the treatment plant. Comprehensive traffic control plans will be implemented to minimize inconvenience.

ANRI:: Construction: Spring 2023 - Fall 2025

SWIFT:: Design: Summer 2024 – Summer 2025
Construction: Fall 2025 – Spring 2029

This project will contribute to the broader Sustainable Water Initiative for Tomorrow (SWIFT) Program, which will add advanced water treatment processes, producing highly-treated water (SWIFT Water®) that meets drinking water standards and is suitable for recharge of the Potomac Aquifer. Once complete, the projects at the Nansemond Treatment Plant will improve the existing plant effluent in addition to producing up to 34 million gallons per day of SWIFT water.

This program will help reverse declining groundwater levels, reduce saltwater intrusion, slow or reduce land subsidence, and significantly reduce the amount of nutrients such as nitrogen and phosphorus entering the Chesapeake Bay, thereby helping to ensure HRSD’s ability to protect public health and the environment for decades to come.

Disruptions to traffic will be minimal, and in most cases, all lanes of traffic will be maintained. No detours are planned or anticipated, but flagging may be used to help direct traffic as needed. All aspects of the project work may be located within HRSD property. The only impacts to traffic will be due to construction equipment entering and leaving the Nansemond Treatment plant via College Drive, between Interstate 664 and Armstead Road, and Armstead Road from College Drive to the treatment plant.

Work will typically take place Monday through Friday during daylight hours (7 a.m. - 4 p.m.). However, there may be occasions when extended hours, work at night, or weekend work may be necessary.

There should not be any interruptions to the water or sewer service in the area.

The construction will not affect the existing pavement. All construction traffic will be permitted to travel on the public roadway.

Typical construction noises such as equipment engines, back-up alarms, materials being delivered, diesel generators, air compressors, sawing, and associated activities should be anticipated.

The contractor will have offices and tool storage facilities on site for the duration of construction. Equipment that is being installed as part of the work may be stored on the plant for short periods of time before it can be located in its permanent location. There will not be any materials or equipment stored in the public right-of way.

Construction workers will park in designated spaces within HRSD property. No personal or company vehicles will be permitted to park on public streets.

The estimated cost for the project is $952 million. The ANRI Facility is approximately $300 million, the SWIFT facility is approximately $570 million, and the recharge wells are approximately $82 million. These projects are financed at the low interest loans from the U.S. Environmental Protection Agency and Virginia Clean Water Revolving Loan Funds and the wastewater treatment fees paid by HRSD customers.

Regular project updates are posted on the HRSD website at www.hrsd.com/construction-status. You may also sign up at www.hrsd.com/subscriptions to receive an email notification when there are website updates. To learn more about SWIFT or to schedule a tour of the SWIFT Research Center (located at HRSD’s Nansemond Treatment Plant in Suffolk, VA), or take a virtual tour, please visit www.hrsd.com/swift.

: The Managed Aquifer Recharge wells are necessary to convey SWIFT Water^® to the Potomac Aquifer. There is a total of 19 wells required for conveyance, 11 of which are located on HRSD property and 8 within the adjacent community.
: No. The drilling process used to make the borehole for the well uses fluids and is conducted at very low pressures and volumes. The fluids are used to cool the drill bit, help remove the soil cuttings, and keep the borehole open.
: No. The well installation process is completely separate from your water and sewer service provided by the City of Suffolk.
: No. Drilling is conducted using a rotary drill bit, similar to drilling into wood. The drill bit cuts the soil and removes it from the hole; there is no driving hammer used to advance the hole.
: While standing close to the drill rig, the sound can be loud; however, the measurements of sound drop off relatively quickly with distance. At 75 feet from the site, the noise is below the sound of normal city traffic, and at 100 feet from the site, the noise is similar to normal conversation.
: The well sites on HRSD property will be drilled on a 24-hour schedule to shorten the overall construction duration.
: Drilling on a 24-hour schedule, well installation may take approximately 8 months per well. The entire project should be completed in mid-2028.
: The wells will be installed to a total depth of approximately 1,200 feet below the ground surface, with some minor variation at each site. The wells will be designed to interact with the Potomac Aquifer, starting at approximately 400 feet below the ground surface and continuing to the bottom of each well.

Public Information Specialist:: Lisa Bolen
757.460.7000 (Office)

HRSD Project Manager:: Adam Werner

Additional Information:: Projects@hrsd.com

Director of Communications:: Leila Rice, APR
757.460.7056 (Office)

ANRI:

Engineering Consultant Firm: Tetra Tech, Virginia Beach, VA
Engineering Consultant Project Lead: Tracy Lewis, PE

Contractor: Garney Construction, Inc. Virginia Beach, VA
Contractor Field Project Manager: Matt McKinnon

SWIFT:

Engineering Consultant Firm: Tetra Tech, Inc. and Carollo Engineers, Inc.
Engineering Consultant Project Lead: Tracy Lewis, PE (Tetra Tech, Inc.)

Contractor: Garney Construction, Inc. Virginia Beach, VA
Contractor Pre-Construction Manager: Patrick Costello
Contractor Construction Manager: Matt McKinnon