Chemical Feeder SOW.docx

United States Coast Guard - Scope of Work

UNITED STATES COAST GUARD

SCOPE OF WORK

Chemical Feeder System Installation for Residential Well Water Systems North View Drive Housing Units - Guilford, CT 06437

1. Purpose The purpose of this Scope of Work (SOW) is to provide all labor, supervision, materials, equipment, tools, testing, startup, commissioning, cleanup, documentation, and warranty support necessary to furnish and install chemical feeder systems for residential private well water systems at the identified U.S. Coast Guard housing units on North View Drive in Guilford, Connecticut. The work is intended to treat existing well water conditions, including nuisance taste/odor concerns identified as a rotten egg smell, and to integrate new chemical injection equipment with the existing well, pressure tank, filtration, and household water treatment components as applicable at each occupied unit.

2. Background and Existing Conditions The existing residential well water systems include a combination of wellheads, pressure tanks, filtration equipment, softening or conditioning equipment, reverse osmosis/point-of-use filtration, piping, controls, and related components. The attached site photos show representative existing conditions, including interior mechanical-space water treatment equipment and exterior wellhead conditions. The Contractor shall field verify each residence, existing piping arrangement, available power, treatment layout, wellhead condition, and installation constraints before installation.

System information from the provided vendor quote identifies existing water characteristics and treatment needs including hardness of 0.00, total dissolved solids of approximately 131.00, raw iron of approximately 1.00, pH of approximately 7.60, and taste/odor concerns noted as a rotten egg smell at the faucet. Bacteria testing was noted as pending on the quote. The Contractor shall not rely solely on this information and shall verify the required treatment configuration, final chemical selection, injection point, dosage setting, and operational requirements for each housing unit prior to startup.

3. Locations The Contractor shall provide chemical feeder system installation at the following occupied residential units:

4. Hours of Operation and Occupied Housing Coordination Standard hours of operation are Monday through Friday, 0800-1500. Work time must be authorized by the COR because the housing units are fully occupied and access will require coordination and confirmation from the resident. The Contractor shall not enter any residence, mechanical space, yard, or associated work area without prior approval from the COR and confirmed resident access. The Contractor shall coordinate daily work sequencing with the COR, maintain a professional presence in occupied housing, protect resident property, and restore each area to a clean and safe condition at the end of each workday.

5. Site Visit Bidders are highly encouraged to conduct a site visit before submitting a proposal. The site visit is intended to allow bidders to verify existing field conditions, access limitations, wellhead locations, interior mechanical spaces, water treatment equipment, electrical availability, required piping changes, installation clearances, drainage considerations, and any conditions that may affect performance of the work. Failure to attend a site visit shall not relieve the Contractor from providing a complete and functional installation.

6. System Description The Contractor shall furnish and install chemical feeder systems and associated treatment components in accordance with the manufacturer requirements, applicable codes, and field-verified conditions.

7. Scope of Work Requirements Conduct a field survey of each unit before installation and confirm the existing system layout, water line routing, pressure tank location, available power, drainage, filter locations, wellhead condition, and interior/exterior access limitations.

Provide a complete chemical feeder system suitable for the well water treatment need at each residence. The final chemical type, concentration, and dosage shall be verified by the Contractor and shall be compatible with drinking water use and applicable ANSI/NSF requirements.

Install the chemical feed pump, solution tank/barrel, control module, tubing, injection point, check valve, isolation valves, fittings, support hardware, and electrical/control connections as needed for a complete and code-compliant system.

Install or integrate the specified carbon filtration equipment where required, including the non-backwashing downflow carbon filter/media tank or approved equivalent, and connect to the existing plumbing system in a neat and serviceable manner.

Provide proper backflow/cross-connection protection for any solution makeup water or related connections. No hose, feed line, or chemical mixing arrangement shall be installed in a manner that can create a cross connection or allow contamination of potable water.

Clearly label chemical containers, feed tubing, injection points, valves, filters, and serviceable components. Labels shall identify the chemical or function of the component and shall remain legible in the mechanical-space environment.

Provide secondary containment or spill control measures for chemical solution storage where required by code, manufacturer guidance, or best practice. Chemical containers shall be protected from damage and placed in a stable, serviceable location.

Provide sampling points as required to verify treated water performance, including raw and treated water sample locations where field conditions allow and where required by the treatment design.

Flush, start up, calibrate, and adjust each system in accordance with manufacturer instructions and site water conditions. Confirm pump operation, dosage settings, control operation, pressure, flow, filtration performance, leaks, and treated water condition prior to turnover.

Repair or replace any disturbed piping, fittings, insulation, supports, fasteners, or minor wall/floor penetrations necessary to complete the work. All disturbed areas shall be left clean, safe, and professional in appearance.

Remove installation debris, packaging, unused materials, and waste from the site daily. Do not dispose of chemicals, flush water, or waste material in a manner that violates Connecticut environmental requirements or local sanitary requirements.

Provide resident-friendly coordination, limit water outages, and notify the COR before any temporary service interruption. Water service shall be restored at the end of each workday unless otherwise authorized by the COR.

8. Environmental, Health, and Connecticut Regulatory Compliance The Contractor shall perform all work in accordance with applicable federal, state, and local requirements, including Connecticut Department of Public Health (CT DPH), Connecticut Department of Energy and Environmental Protection (CT DEEP), local health district requirements, applicable plumbing and building codes, OSHA requirements, and manufacturer installation instructions. At a minimum, the Contractor shall comply with the following:

Private well protection: maintain sanitary wellhead conditions; prevent contamination of the well, pressure tank, piping, and potable water system; keep hazardous chemicals away from the wellhead; and protect the wellhead from damage during work.

Connecticut private well guidance: CT DPH identifies private well owners as responsible for the quality and maintenance of private well systems and recommends proper maintenance, inspection of wellheads, watertight caps, accessible screened vents, and use of appropriately licensed contractors for well/pump/water system work.

Chemical feed design and installation: chemical feed systems shall include properly identified chemical, feed pump, feed line, injection point, check valve/injection device, secondary containment where applicable, sampling taps, and cross-connection protection consistent with CT DPH chemical feed system guidance.

Drinking water treatment chemicals: any chemical used for potable drinking water treatment shall be appropriate for drinking water use and shall be certified/listed to ANSI/NSF Standard 60 or otherwise accepted by the authority having jurisdiction.

Potable water system components: components in contact with drinking water shall be suitable for potable water use and shall comply with applicable ANSI/NSF standards and plumbing code requirements.

Cross-connection prevention: solution makeup water, hose connections, feed lines, bypasses, and service connections shall be arranged to prevent backflow, backsiphonage, or contamination of the potable system.

Spill prevention and disposal: chemical containers, solution tanks, and related materials shall be stored, handled, transported, and disposed of in accordance with SDS requirements, product labels, CT DEEP requirements, and local disposal requirements. No chemical or untreated waste shall be discharged to the ground, storm drain, surface water, or wellhead area.

Testing and verification: any required laboratory testing shall be performed by a CT DPH-approved or certified laboratory when required by regulation, health district direction, or project requirements. Final settings and performance shall be documented for each unit.

Permits and approvals: the Contractor is responsible for obtaining any required permits, notifications, inspections, approvals, or coordination with the local health department, plumbing/building officials, utility providers, or other authorities having jurisdiction before performing regulated work.

9. Safety and Resident Protection Comply with OSHA requirements and maintain safe work practices at all times.

Provide Safety Data Sheets (SDS) for all chemicals proposed for use prior to bringing chemicals onto the property.

Keep work areas secured from residents, children, pets, and unauthorized persons.

Maintain clean walking paths and protect flooring, walls, finishes, landscaping, and personal property.

Immediately report spills, leaks, property damage, unsafe conditions, or water quality concerns to the COR.

Coordinate any water shutoff, pressure release, electrical work, or system disinfection with the COR before work begins.

10. Submittals Manufacturer cut sheets for the chemical feed pump, control module, solution tank/barrel, tubing, injection/check valve, carbon filter/media tank, media, fittings, and major appurtenances.

SDS and product information for all proposed chemicals.

ANSI/NSF Standard 60 documentation for drinking water treatment chemicals and applicable potable water component certifications.

Proposed installation layout or schematic for a typical unit, including injection point, feed line routing, chemical solution tank location, sampling points, valves, filter location, and power/control requirements.

Proposed schedule and resident access plan for all nine addresses.

Proof of applicable licenses, registrations, or certifications required for well, plumbing, water treatment, or electrical work in Connecticut.

Startup checklist and final system settings for each unit.

11. Quality Control and Acceptance Each installation shall be inspected by the Contractor for leaks, pressure concerns, secure mounting, proper labeling, proper tubing routing, chemical containment, and safe operation before turnover.

The Contractor shall demonstrate system operation to the COR or COR-designated representative, including chemical feed operation, filter configuration, bypass/valve function, shutdown procedure, and normal service requirements.

The Contractor shall provide written confirmation that each unit was installed, started up, calibrated, and left operational.

Final acceptance will be based on completion of all required installations, successful operation, cleanup, documentation, warranty information, and correction of all deficiencies identified by the COR.

12. Warranty The Contractor shall provide all manufacturer warranties for installed equipment and materials and shall provide a minimum one-year workmanship warranty from the date of Government acceptance, unless a longer warranty is provided by the manufacturer or required by the final contract. Warranty coverage shall include repair or replacement of defective materials, failed components, leaks caused by installation defects, improper fittings, tubing failures caused by workmanship, and correction of startup or calibration deficiencies. The Contractor shall provide warranty contact information, response procedures, and documentation for each system at turnover.

13. Deliverables Completed installation at all nine North View Drive housing units listed in this SOW.

Resident/unit access log or completion log identifying work completed at each address.

Manufacturer manuals, warranty documents, SDS, startup settings, and maintenance instructions.

Final photo documentation of each completed installation.

Written certification that pricing information from the quote was not included in the SOW and that all installed systems are complete, operational, and ready for normal use.

14. Regulatory References Used for Drafting The Contractor shall verify the current version of all applicable regulations and requirements before performing work. References used in preparing this SOW include:

Connecticut Department of Public Health, Private Well Water Systems in Connecticut - Best Management Practice Checklist.

Connecticut Department of Public Health, Private Wells Program guidance, including local health department authority, private well testing, and action level resources.

Connecticut Department of Public Health, Chemical Feed System Project Application and Liquid Chemical Feed System Design and Installation Guidelines references, including NSF Standard 60, feed system components, cross-connection protection, sampling, and chlorine feed CT concepts where applicable.

Appendix A - Existing Site Conditions Photos The following photos are included for reference only and represent existing system conditions observed at the housing locations. The Contractor shall field verify all conditions before installation.

Photo 1: Existing interior well water treatment equipment, pressure tank, controls, softener/conditioning equipment, and associated piping.

Photo 2: Existing Culligan Aqua-Cleer reverse osmosis/advanced drinking water cartridges and related point-of-use filtration components.

Photo 3: Existing GE whole-house filter housing and piping connections.

Photo 4: Exterior wellhead condition with visible casing, cap, conduit, and surrounding grade/vegetation.

Photo 5: Exterior wellhead cap and conduit connection detail showing corrosion and gasket/fastener areas requiring protection during work.

Photo 6: Exterior wellhead and surrounding lawn/grade condition requiring protection and clear access during work.

Photo 7: Existing Culligan pressure/storage tank or related treatment component in mechanical space.

Photo 8: Exterior wellhead condition near occupied housing and landscaping, including access constraints and surrounding grade.

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