Attach_4_Addendum_No__2___New_Work_Items_for_2026_Re-Solicitation.pdf

Rehabilitate Hurricane Ridge Water System Addendum No. 2 – New Work Items for 2026 Re-Solicitation

This Addendum No. 2 – New Work Items for 2026 Re-Solicitation modifies the original design intent by adding new work to the original (2025) stamped drawings and specifications, including but not limited to: a written description of each new item, new or revised specification sections, new or revised drawings or drawing details, guidance on how to incorporate pricing for new work into existing contract line items, and similar.

No separate CLIN is assigned for these Addendum items; all costs shall be incorporated into the lump sum for CLIN 001, Water Distribution System Replacement.

A. Fire Hydrant Assembly (New Work)

1. DESCRIPTION OF WORK

The Contractor shall furnish all labor, materials, equipment, excavation, backfill, testing, and appurtenances necessary to install a new fire hydrant assembly at the location shown on the Addendum drawings. Work includes, but is not limited to:

1. Installation of one complete dry-barrel fire hydrant assembly, including hydrant shoe connection, auxiliary gate valve, valve box, thrust restraint, and bollard protection.

2. Installation of a removable fiberglass hydrant marker for snow conditions.

3. Adjustments to surrounding pavement striping, accessible parking, loading zone, crosswalk, and associated signage to meet accessibility requirements.

4. Installation of accessible curb ramps or blended transitions in conformance with applicable federal accessibility standards.

5. Performance of a hydrant flow test witnessed by the Contracting Officer’s Representative (COR).

6. Bagging and securing the hydrant until the water system is accepted and placed into service.

All work shall be completed in accordance with these specifications, the Addendum drawings, applicable codes, and manufacturer recommendations.

2. TECHNICAL SPECIFICATIONS

2.1 Fire Hydrant

1. Standard and Configuration Fire hydrant shall meet AWWA C502 – Dry-Barrel Fire Hydrants with the following characteristics:

o 5¼-inch main valve opening o Two (2) 2½-inch hose nozzles, National Standard Thread o One (1) 4-inch pumper nozzle with Pacific Coast Thread (PCT) equipped with a “Storz” fire-department connection o Storz coupling shall be compatible with 5-inch hose and shall conform to NFPA 1963, Chapter 6, latest edition o 6-inch mechanical joint shoe connection o Minimum bury depth: 42 inches

2. Acceptable Products o Mueller Centurion A-423 o Clow F-2500 o M&H 929 o Or approved equal

3. Elevation and Clearance Requirements o Centerline of lowest hydrant outlet shall be not less than 18 inches above finished grade.

o Provide and maintain 36 inches of clear space around the full hydrant circumference per NFPA 1.

o Orient pumper port to face the paved roadway.

4. Snow-Visibility Marker Provide a removable fiberglass hydrant marker:

o “Hydrafinder Fire Hydrant Marker” by RoDon Corp International, or approved equal o Minimum length: 8 feet o Include reflective yellow tape or bands for visibility

2.2 Bollard Protection

Provide two (2) Type 2 concrete-filled steel bollards positioned at the southeast and southwest corners of the hydrant installation, outside the 36-inch NFPA clearance envelope. Install bollards per the details provided in the Addendum drawings.

2.3 Pavement Striping, Accessible Parking, and Signage

Modify existing pavement striping to provide:

1. One 96-inch-wide accessible van-parking space and one 96-inch-wide access aisle, centered on the hydrant location.

2. Access aisle shall be clearly marked with diagonal striping to indicate no parking.

3. Install crosswalk striping connecting the access aisle to the temporary trailer facilities.

4. Install new accessibility signage on the north side of the sidewalk:

o International Symbol of Accessibility o “Van Accessible” designation o Bottom edge of sign mounted a minimum of 60 inches above grade

All pavement markings and signage shall conform to the MUTCD, ABAAS, and NPS requirements.

2.4 Accessible Curb Ramps

At the head of the access aisle, install accessible curb ramps or a blended transition through the concrete sidewalk:

• Provide a “cut-through” or ramped surface as indicated on the Addendum drawings.

• Design and construction shall comply with applicable federal accessibility standards (ABAAS) including slope, width, landings, detectable warnings (if required), and cross-slope tolerances.

• Ensure accessible travel routes are maintained in all directions.

2.5 Auxiliary Hydrant Valve

Install one 6-inch gate valve on the hydrant lead:

• Locate in the designated no-parking/loading zone of the asphalt (approximately 2–3 feet off the concrete sidewalk curb).

• Provide valve box, cover, and riser components per the specifications.

• Ensure valve is fully operable and accessible after paving and striping adjustments.

2.6 Hydrant Flow Testing

Conduct one hydrant flow test to determine available fire flow (gpm) and pressure:

• Perform testing in accordance with AWWA M17 and local fire-flow test standards.

• All testing shall be witnessed by the COR.

• Submit a test report including residual pressure, static pressure, flow rate, and pitot readings. Unsatisfactory test results shall be corrected by the Contractor at no additional cost to the Government.

2.7 Hydrant Bagging

Hydrant shall remain bagged or otherwise secured from use until:

• The hydrant installation has been accepted by the COR,

• All pressure, leakage, and flow tests are complete, and

The water system is fully commissioned and approved for service.

3. DRAWINGS

B. Conduit Extension for Future Electrical Service (New Work)

1. DESCRIPTION OF WORK

The Contractor shall furnish all labor, materials, equipment, excavation, backfill, surface restoration, and appurtenances required to install a new underground conduit extension to support future electrical service by others. Work includes connection to an existing conduit, installation of new conduit and sweeps within the water line trench, surface penetrations and restoration, and installation of a new H-20 rated electrical vault at the location shown on the Addendum drawings.

The conduit will serve as a future electrical pathway only. No conductors, terminations, grounding, splicing, or electrical equipment are included in this contract.

2. TECHNICAL SPECIFICATIONS

2.1 Existing Conduit Tie-In

1. Locate and expose the existing 1-inch PVC conduit at the tie-in point indicated on the drawings; conduit extends approximately 36 feet from the south concrete sidewalk curb and terminates approximately 11 feet from the northern concrete sidewalk curb. It is marked with a steel pin set into the asphalt.

2. Cut into the existing conduit and install one long-radius 90-degree sweep to redirect the pathway east into the water line trench.

3. Provide all required fittings, adapters, and couplings to create a continuous, code-compliant, watertight pathway.

2.2 New Conduit Installation

1. Install approximately 120 linear feet of conduit at 24-inch depth within the water line trench along the alignment shown on the drawings. Locate new conduit for future electrical service at least 6” above new conduit for tank level well pump control within the trench, per drawing details.

2. Conduit material shall be rigid PVC conduit (Schedule 40 minimum; Schedule 80 where subject to physical damage).

3. Maintain minimum 8-inch separation from the HDPE water main and 6-inch separation from other utilities in the trench.

4. Install detectable marking tape above the conduit, per drawing details. Note that only one run of detectable marking tape is required where the two electrical conduits are stacked in the trench.

5. Install one long-radius 90-degree sweep and up to 12 linear feet to bring the conduit to its termination point at new vault set in concrete sidewalk.

6. Bends shall comply with specification requirements limiting the total pathway to no more than the equivalent of three 90-degree bends between pull points.

7. Provide a 200-lb minimum rated pull rope in the conduit to facilitate future conductor installation.

2.3 Surface Penetration and Restoration

1. Install the second sweep and conduit extension by cutting through existing asphalt pavement and concrete curb and sidewalk to reach the vault location. Vault shall be located near the south (road-side) edge of the concrete sidewalk, adjacent to the seasonally installed Bunny Tow operating system pole.

2. Set vault flush with the concrete sidewalk surface; sawcut concrete to clean edges.

Restore concrete sidewalk and curb matching existing depth, finish, slope tolerances, and accessibility requirements.

3. Restore asphalt pavement to existing thickness, grade, and finish in accordance with the trenching and surface restoration specifications.

4. Maintain safe pedestrian and vehicle access during construction.

2.4 Electrical Vault

1. Furnish and install one underground electrical vault, minimum 24 inches by 24 inches, sized to accommodate the incoming conduit and future electrical work.

Vault shall be suitable for installation within a sidewalk and shall meet SCTE 77 Tier 8 load rating for occasional nondeliberate vehicular traffic.

2. Vault shall comply with applicable governing standards for underground enclosures, including:

o NEMA 250 o UL 50 / UL 50E o SCTE 77, Tier 8 or higher

3. Install vault with gravel bedding for drainage, set level to finished grade, and flush with surrounding concrete sidewalk.

4. Provide final sweeps, conduit terminators, or sleeves suitable for PVC as required.

5. Interior of vault shall be clean, dry, and free of debris at turnover.

2.5 Limits of Work

1. Contractor shall install empty conduit only.

2. No conductors, grounding, terminations, splices, controls, equipment, or electrical devices are included.

3. All future electrical work in this pathway will be performed by others.

2.6 Cleaning and Acceptance

1. Clean the interior of the installed conduit to remove all debris and moisture prior to acceptance.

2. Demonstrate conduit continuity to the COR through mandrel or pull-rope test.

3. Restore all surfaces, appurtenances, and disturbed areas to original or better condition.

3. DRAWINGS

Existing electrical vault and conduit

New electrical vault in sidewalk adjacent to seasonal Bunny

Tow pole

New electrical sweeps and conduit in water line trench