Tab 4 SOW Revised 2.pdf

Wallops Flight Facility Chlorinator Upgrade SOW

NASA Wallops Flight Facility 34200 Fulton Street

Wallops Island, Virginia

1.0 STATEMENT OF WORK

Goddard Space Flight Center’s Wallops Flight Facility operates a public drinking water system. A community waterworks is located on the Main Base The system utilizes a liquid sodium hypochlorite for disinfection and are currently operating with a single chlorine injection point to chlorinate raw well water prior to a ground‐based water storage tank. The water system is also coupled with extensive fire suppression systems and water age is an operational issue with the current chlorination systems. The current chlorination system has also experienced several failures and require updating and renovation to eliminate failure points.

NASA is seeking services provide installation and commissioning of equipment for improvements for a public drinking water system.

The purpose of this project is to upgrade the existing chlorination station and chlorine monitoring for the Wallops drinking water system. The chlorination stations will facilitate the disinfection of water to ensure the delivery of safe drinking water to the public and help reduce the formation of disinfection byproducts through improvements to the chlorine dosing control.

1.1 MAIN BASE CHLORINATION SYSTEM

Include necessary services to provide replacement of chlorination equipment for the Wallops Flight

Facility Main Base drinking water system.

Ensure compliance with applicable Virginia Waterworks Regulations and applicable codes and standards.

1.1.1 Replace existing dosing station

Install new Grundfos pre‐engineered duplex dosing skid or equal to include two digital diaphragm dosing pumps with stepper motors, remote start/stop, analog inputs, analog outputs, relay outputs, graphical display, flow control monitoring and switch control panel to replace existing chlorine dosing pump system.

Inspect and secure or replace all upstream and downstream chlorine dosing lines and remove abandoned components.

Connect dosing skid to existing (Johnson Controls) building supervisory control device to provide monitoring, and alarming.

Provide flow‐paced chlorine dosing using existing well flowmeter signal.

Replace existing automatic chlorine analyzer system with new Hach Cl‐17s and SC4500 digital controller or equal.

1.1.2 Bulk chemical storage equipment

Install 55 gallon drum chlorine containment system to include portable ramp for material handling and secondary spill containment with integrated scale connected to NASA building automation system and local display.

1.1.3 Training and Commissioning

Perform witness testing, commissioning, and calibration of the chlorination station components.

Provide training and documentation on the operation and maintenance of the chlorination stations to the designated personnel.

Purchase for government pump service kit for each installed chlorine pump.

2.0 Design

Follow all applicable codes and regulations, including AWWA standards, Virginia Department of

Environmental Quality regulations, and NASA standards.

2.1 Deliverables

2.1.1 Preliminary Deliverables

Functional description of alarms, controls, and backups

Cut sheets for all proposed equipment

2.1.2 Installation Deliverables

Systems tested and functional

Close‐out submittals

Punch list 100% complete

Areas cleaned and finished

Commissioning Plan

O&M manuals

Warranty and other documentation

3.0 Reviews and Meetings

3.1.1 Kick‐Off Meeting

The Contractor shall coordinate and conduct a Kick‐off meeting within two (2) weeks following contract award. The contractor should plan for a virtual Kickoff Meeting through Microsoft Teams. The meeting will be used for introductions, a Statement of Work review, development of an action plan to enable completion of tasks to meet the project milestones, and any other general discussions. The Contractor shall submit Kick‐off meeting minutes within two (2) business days following the Kick‐off meeting via the submittal process to include a summary of the discussions and action items.

3.1.2 Training

The contractor shall conduct onsite training to designated personnel for all aspects of system operation, including calibration, and adjustments.

3.1.3 Commissioning closeout meeting

The contractor shall attend a follow up meeting 90 days after operation begins to evaluate system performance in maintaining chlorine residuals in the water distribution system.

4.0 SAFETY AND SECURITY

The Contractor shall submit for approval by the government a safety plan prior to any work conducted.

Contractor shall assure that any job hazards are identified and discussed in a job hazard analysis prior conducting the associated work.

5.0 GEOGRAPHICAL LOCATION REQUIREMENT

This project is in response to regulatory violations with the Virginia Department of Health related to chlorine residual control and is a critical aspect to the functioning of the potable water system.

Contractor must be located within a 1 hour travel distance to Wallops Flight Facility to allow for prompt support during commissioning and warranty periods.

6.0 EXISTING WATER SYSTEM DETAILS

Main Base system

Waterworks Operation Permit Class 5 Community Waterworks

Max anticipated daily water demand

60,000 gpd

Disinfectant Liquid Sodium hypochlorite (12.5%)

Required free chlorine at entry point

0.29 mg/l

Current Max chlorine delivery rate

90 ml/min

7.0 PERIOD OF PERFORMANCE 10/01/23– 6/1/24