3. Well_Head_SOW_Guilford_Housing (1).docx

UNITED STATES COAST GUARD

REVISED SCOPE OF WORK (SOW)

Guilford Housing Well Head Cap Replacement and Well Head Extension

20 Northview Dr., Guilford, CT 06437 - Well head extension

1. Purpose The purpose of this revised Scope of Work is to define contractor requirements for the removal, preparation, supplying, and installation of a new sanitary well head cap and an approximately 18-inch vertical well head extension at the identified Coast Guard housing well locations.

The work includes verification of existing well casing conditions, removal of the existing well head cap where required, installation of a compatible well casing/riser extension, installation of a new gasketed and locking sanitary well cap, correction of nearby grade or pad conditions, protection of the potable water source, site restoration, cleanup, and closeout documentation necessary to provide a complete, serviceable, code-compliant, and professionally finished installation.

2. Scope of Work The contractor shall provide all labor, supervision, tools, equipment, transportation, materials, incidentals, testing support, and technical expertise required to complete the work described in this SOW.

Field verify both well locations, casing outside diameter, casing material, existing cap configuration, venting, electrical/control cable entry, pad/grade conditions, and surrounding utilities before ordering materials or starting work.

Remove the existing well head cap at the identified cap replacement location and remove any loose, damaged, non-sanitary, or incompatible components that prevent proper installation.

Install an approximately 18-inch vertical extension to the existing well casing/riser at the identified extension location, or to a height required by applicable state/local code if more restrictive.

Install a new sanitary, vermin-resistant, gasketed, vented, and locking well cap that is properly sized for the final casing/riser diameter and compatible with existing wiring or conduit penetrations.

Provide watertight, structurally sound, and code-compliant connections at all casing extension joints, couplings, or welded/mechanical connection points.

Clean, trim, and restore vegetation immediately around the well head work area to provide safe access, clear visibility, and a finished condition suitable for future inspection and maintenance.

Adjust soil, gravel, concrete, or nearby grade as required to direct stormwater away from the well casing and prevent ponding, surface water intrusion, or erosion at the well head.

Protect all Coast Guard housing structures, lawns, walkways, landscape blocks, utilities, well components, and resident/Government property from damage during all phases of work.

Remove and properly dispose of all removed caps, excess materials, debris, packaging, and waste off Government property.

3. Technical Requirements - Water System/Well Head Protection All well head work shall be completed using accepted potable water well practices and by personnel qualified and licensed, where required, to perform well construction, well modification, or well service work in Connecticut.

Well casing extension material shall match the existing casing material and diameter where practical. If a different compatible material is proposed, the contractor shall submit the proposed material and installation method to the POC for review before installation.

All materials in contact with the potable water well system shall be new, unused, corrosion-resistant, manufacturer-approved for the intended application, and suitable for potable water well service. Components shall meet applicable NSF/ANSI potable water material requirements when applicable.

The finished well head assembly shall prevent insects, rodents, rainwater, lawn runoff, debris, and other contaminants from entering the well casing.

The well cap shall include a screened vent where required and shall include properly sealed electrical or control cable openings. Open or unsealed penetrations are not acceptable.

The contractor shall ensure the casing extension is plumb, rigid, and securely fastened. Final installation shall not allow movement, rocking, open seams, gaps, or exposed unsealed joints.

The contractor shall avoid introducing dirt, grass, insects, tools, sealants, lubricants, pipe cuttings, or other foreign material into the well casing during removal and installation activities.

If the well cap is removed or the well casing is opened during work, the contractor shall maintain temporary sanitary protection over the casing whenever the well is unattended.

If required by code, permit conditions, or industry practice based on field conditions, the contractor shall disinfect the affected well components after work and coordinate any required water service restoration steps with the POC.

The contractor shall notify the POC immediately if the existing casing is cracked, excessively corroded, loose, below required height, improperly sealed, or otherwise unsuitable to support the intended cap or extension installation.

4. Material and Part Information Contractor shall furnish all well caps, casing extension materials, couplings, clamps, gaskets, vents, seals, fasteners, patching materials, gravel/soil restoration materials, and incidental items required for a complete installation.

New well cap shall be sanitary, gasketed, locking, vented/screened as required, vermin-resistant, and sized to fit the final casing/riser diameter.

Casing extension shall be compatible with existing well casing and shall be joined using an approved method such as welding, approved coupling, or manufacturer-approved mechanical connection suitable for well casing service.

Fasteners and hardware exposed to weather shall be corrosion-resistant and appropriate for exterior potable water well applications.

Sealants, if used, shall be approved for potable water well applications and shall be installed in accordance with manufacturer instructions.

Materials shall be suitable for exterior exposure, freeze/thaw conditions, lawn maintenance exposure, and continued service in the Guilford, Connecticut environment.

5. Site Conditions and Existing Photo Documentation The attached photos show existing well head conditions within Coast Guard housing lawn areas, including low-profile sanitary caps, vegetation/overgrowth, nearby landscape/retaining blocks, and sloped grades. The contractor shall use the photos for general awareness only and shall verify all conditions in the field before performing work.

Existing well heads are located in maintained grass areas and shall remain protected from damage by vehicles, mowers, tools, or equipment.

Grass and vegetation around the well heads shall be trimmed back sufficiently to complete the work and provide a clean final condition.

Where block edging or landscape/retaining material is present, the contractor shall not disturb or remove material unless required for the work and approved by the POC.

Final finished grade shall promote positive drainage away from each well head and shall not bury, obstruct, or conceal the cap or casing.

6. Unit/Site Occupancy, Access, and Coordination The work is located on U.S. Coast Guard housing property. Work shall not commence until access has been coordinated and authorized by the POC.

The POC will coordinate directly with the contractor regarding access, scheduling, and the authorized work window.

This SOW covers two well locations: 5 Northview Dr., Guilford, CT 06437 for well head cap replacement, and 20 Northview Dr., Guilford, CT 06437 for well head extension.

The contractor shall not coordinate directly with tenants or other Coast Guard personnel unless specifically authorized by the POC.

The contractor shall maintain safe access for residents and shall secure tools, materials, and work areas to prevent trip hazards or unauthorized access during the work.

7. Standards, References, and Compliance All work shall comply with applicable federal, state, and local laws, codes, regulations, manufacturer instructions, permit requirements, and accepted industry standards for potable water wells, well head protection, and well construction/modification.

The contractor shall maintain all licenses, certifications, registrations, accreditations, permits, insurance, and qualifications required to perform well head work at the project location. Copies shall be provided with the quote/bid or upon request.

The contractor shall comply with Coast Guard site security, safety, access control, and property protection requirements while working on Government property.

Any proposed deviation from this SOW, material substitution, schedule change, or change in installation method shall be submitted to and approved by the POC prior to execution.

The contractor is responsible for determining whether state or local well notification, permit, or completion reporting is required and shall provide confirmation to the POC when applicable.

8. Work Hours, Utilities, and Service Disruption Normal work hours are 8:00 AM to 3:00 PM, Monday through Friday, excluding Federal holidays, unless otherwise approved in advance by the POC.

Any work outside normal work hours shall be requested in advance and approved by the POC before performance.

Work shall be planned and performed to minimize disruption to Coast Guard operations and nearby housing residents.

If water, electrical, pump controls, or other utilities must be secured or modified temporarily, the contractor shall coordinate the requirement with the POC in advance and shall not secure utilities without approval.

Any planned potable water service interruption shall be minimized and communicated to the POC prior to work.

9. Safety, Environmental, and Site Protection The contractor shall perform all work in a safe manner and comply with applicable OSHA requirements and Coast Guard site safety requirements.

The contractor shall protect the potable water source from contamination throughout the work. Tools, materials, and hands/gloves shall be kept clean when working around open casing or cap components.

The contractor shall control soil, vegetation, dust, and debris so that foreign material is not introduced into the well casing or adjacent drainage areas.

The contractor shall protect lawns and finished surfaces from rutting, staining, fuel/oil leakage, and equipment damage. Any contractor-caused damage shall be corrected at no additional cost to the Government.

No fuel, chemicals, solvents, adhesives, lubricants, or debris shall be staged or disposed of in a manner that could impact the well, soil, stormwater, housing areas, or Government property.

The contractor shall maintain a clean and safe work area and remove tools, equipment, trash, debris, and materials from the site at the end of each workday unless otherwise approved by the POC.

10. Quality Assurance and Acceptance Completed work is subject to POC inspection and acceptance. Work shall be complete, serviceable, safe, sanitary, clean, and professionally finished before final acceptance.

Final well head cap shall be secure, locking, properly seated, gasketed, vented/screened as required, and free of visible gaps or open penetrations.

Casing extension shall be vertical/plumb, properly joined, structurally stable, and finished to the required height above surrounding grade or pad.

Final grade or surface patching shall shed water away from the casing and shall not create ponding around the well head.

All disturbed areas shall be restored to a neat condition and free of construction debris.

The contractor shall correct deficiencies, workmanship concerns, improper joints, loose caps, inadequate extension height, poor grading, damaged lawn areas, or other nonconforming work identified by the POC at no additional cost to the Government.

11. Project Completion and Closeout Upon completion, the contractor shall notify the POC that the site is ready for inspection.

The site shall be returned to at least the same level of cleanliness and order as found prior to the start of work, with all project-related debris and removed materials disposed of off site by the contractor.

No on-site storage will be available unless specifically authorized in writing by the POC.

At completion, the contractor shall provide product data for installed well cap and casing extension materials, warranty information, care/maintenance instructions, and a brief completion summary.

The completion summary shall include the final measured well head height above finished grade/pad, materials used, installation method, any disinfection or service restoration steps performed, and any notable issues encountered.

12. Photo Documentation Requirements The contractor shall submit photo documentation of existing conditions prior to work at each well location.

The contractor shall submit work-in-progress photos showing casing extension installation, cap installation, and any grade/pad adjustment work.

The contractor shall submit final photos showing completed well head assembly, finished height, cap condition, and surrounding grade or restoration condition.

Photos shall be clear, date-stamped if possible, and provided to the POC as part of closeout.

USCG Guilford Housing Well Head SOW Appendix A - Existing Conditions Photographs The following photographs are included as visual documentation of the existing well head conditions and surrounding site conditions. Photographs are for reference only; the contractor shall field verify all dimensions and conditions.

Photo 1 - Existing well head protection ring and sanitary cap area near housing unit. Existing vegetation and low surrounding grade require cleanup and restoration during work.

Photo 2 - Existing well head with blue sanitary cap adjacent to CMU landscape/retaining block area. Contractor shall verify casing height, cap condition, and drainage away from the casing.

Photo 3 - Low-profile well head condition within grassed area. Well head extension and final grade shall maintain positive drainage and protect against surface water intrusion.

Photo 4 - Existing well head condition on sloped housing site. Contractor shall protect lawn areas, restore disturbed surfaces, and ensure the finished assembly is visible and serviceable.

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