03. PDB_MHMV080002_Demo Sub3 and Rebuild Sub10_Scope of Services_19Oct2026.pdf

SCOPE OF SERVICES

Progressive Design-Build (PDB)

DEMO SUBSTATIONS 3, REBUILD SUBSTATIONS 10 AND DISTRIBUTION SYSTEM

MHMV 080002

19 October 2026

KIRTLAND AIR FORCE BASE

NEW MEXICO

TABLE OF CONTENTS

1. PURPOSE

2. DESCRIPTION OF NEED

3. COST MODELING

4. RISK MANAGEMENT

5. PROJECT SCHEDULE

6. ATTACHMENTS

Demo Substations 3, Rebuild Substations 10 And Distribution System

MHMV080002

Scope of Services

1. PURPOSE

The purpose of this Scope of Services is to provide a detailed project scope and technical redesign requirements for the Demolition of Substations 3 and 10 and construct a new Substation 10 at an adjacent location to include Distribution Systems. This project is located on the Southern boundary of Kirtland Air Force Base (KAFB).

Offerors shall use the information contained herein as information for their qualifications package.

2. DESCRIPTION OF NEED

To replace these obsolete facilities and establish long-term grid resilience, the project entails designing and constructing a modern, consolidated Substation 10 rated at 12/16/20 MVA (46 kV to 12.47 kV). The infrastructure scope encompasses installing a new 46 kV transmission tap engineered to 69 kV physical and electrical standards, enclosing the facility within an Anti- Terrorism/Force Protection (AT/FP)-compliant masonry wall and climate-controlled switchgear building, and converting the entire downstream distribution network from 4.16 kV to an underground 12.47 kV concrete-encased duct bank system. The new configuration will replace obsolete switches and pad-mounted transformers, provide advanced metering, and establish vital tie capacities to support mission-critical facilities, the expanding Air Force Safety Center complex, and the future 5,000 kVA Zia Park development.

Under this PDB, the Design-Build (D/B) Team shall refresh, field-validate, and update the Government’s existing 100% Design package to include specifications, calculations, analysis, and design analysis to incorporate all current codes, standards, and any previously omitted requirements prior to construction.

2.1. Project Goals

The primary goal of the Demo Substation 3, Rebuild Substation 10 and Distribution System project is to safely decommission and demolish Substations 3 and 10 and design, construct, and commission a modern, consolidated Substation 10 rated at 10,000 KVA (10/12/14 MVA).

This infrastructure upgrade will replace aged, unserviceable assets with a resilient, high-capacity substation and an underground distribution backbone designed to eliminate single points of failure and modernize base electrical infrastructure.

A fundamental goal is the complete voltage conversion of the downstream distribution network from 4.16 kV to an underground 12.47 kV system utilizing concrete-encased duct banks, new 500 kcmil (MCM) A-l feeders, precast vaults, and upgraded pad-mounted transformers equipped with secondary connection pedestals. The project aims to eliminate operational bottlenecks and provide adequate electrical capacity to support major current and future mission initiatives, specifically integrating the 5,000 kVA projected demand for the Zia Park development.

The project is dedicated to maintaining absolute continuity of operations throughout all phases of design, construction, and cutover. The goal is to construct, test, and energize the new substation, the 46 kV transmission tap (constructed to 69 kV standards), and primary distribution routes before taking current and substations facilities offline. This phased approach will ensure zero unscheduled power interruptions to mission-critical base facilities and tenant commands, specifically safeguarding operations at Sandia National Laboratories, Lovelace Medical facilities, and the New Mexico Air National Guard complex.

The project will establish an integrated, fault-tolerant electrical grid by incorporating robust tie-ins with existing substations, including normally open ties to Circuit 1A-1, the Air Force Inspection and Safety Center (AFISC)/Safety Substation, and Substations 22/23. Siting exterior 69 kV tap switches with load-break interrupters, medium-voltage bypass switches, modern microprocessor-based relay protection (SEL relays), automated load tap changing (LTC), and a bus-stabilizing 1,200 kVAR capacitor bank will provide operational flexibility, safe maintenance isolation, and long-term grid stability.

Project to comply with all applicable federal, state, and local laws; statutes; Executive Orders; Department of Defense/Air Force manuals, handbooks, regulations, guidance, and policies. Project to comply with Whole Building Design Guide (WBDG), Unified Facility Criteria (UFC), and all related libraries. The primary criteria are the Air Force Criteria from the Documents Library. The Unified Facilities Guide Specifications (UFGS) is the mandatory starting point for all specifications, and shall not be deleted, materially modified, or made less stringent without Government approval.

2.1.1. Progressive Design-Build (PDB) Project Goals for Demo Substation 3, Rebuild

Substation 10 And Distribution System.

2.1.1.1. Streamline Schedule Execution and Mission Readiness

Utilize the flexible PDB framework to streamline the design and construction timeline. Early collaboration is critical to ensure the facility captures all the requirements from User and KAFB Key stakeholders.

2.1.1.2. Facilitate Early Risk Mitigation and Technical Integration Leverage the integrated D/B team's expertise early in the design phase to identify and resolve technical challenges. This includes proactively mitigating risks associated with determining and deconflicting Department of Defense codes, regulations, and standards to include UFC and KAFB Installation Facilities Standards (IFS), KAFB Low and Medium-Voltage Electrical Design and Equipment Requirements. Also, seamless integration of UFC, KAFB IFS, and code requirements for design and construction.

2.1.1.3. Ensure Fiscal Certainty and Cost Optimization

Work transparently and collaboratively with Government stakeholders during project development to align the facility's scope and advanced capabilities within the $27.8M. The progressive nature of the contract allows for continuous, joint cost-modeling to achieve an optimal and agreeable price prior to the start of construction.

2.2. Scope of Services

The scope of this project is to design and construct a new outdoor Unit Substation 10 rated at 10,000 KVA, 46 KV – 12.47 KV at KAFB, utilizing the provided preliminary drawings as a mandatory engineering baseline. This comprehensive effort involves preparing a final design and executing the demolition of the existing 3.75 MVA Unit Substation 3, including its associated 4-feeder 4.16 KV outdoor metal clad switchgear and high-side 46 KV gang-operated air break switch, and replacing the existing 5 MVA Unit Substation 10. The existing 4,160-volt distribution system currently served by both Substations 3 and 10 will be upgraded to a modern, underground 12,470-volt distribution system connected directly to the new 10 MVA Unit Substation 10. All design, utility extensions, site preparation, vertical construction, equipment integration, and demolition activities must be executed in strict accordance with the KAFB IFS, UFC, the general provisions defined in Attachment A:

Engineering and Construction Requirements, and the conceptual project drawings.

Project will include, but is not limited to, the following elements:

2.2.1. Project Phasing

2.2.1.1. All work shall be planned to minimize interference and interruption with the User’s mission. Contractor shall develop a phasing and outage plan with input from the facility Users to minimize outage duration and impact on the User’s mission. The phasing plan shall include a clear delineation of demolition and installation activities per sections/zones before progressing to subsequent phases. Crucially, the outage and phasing plan must demonstrate how continuous operational redundancy will be maintained for the Safety Substation (currently backed up by Substation 3) and Substation 23 (currently backed up by Substation 10) throughout the transition period.

Contractor shall be flexible in coordinating work near any scheduled outages, missions, or other construction activities that may disrupt or interfere with the User’s mission. This flexibility is essential to ensure minimal disruption to ongoing operations and to maintain a productive working environment for all stakeholders involved.

2.2.2. Civil

2.2.2.1. When possible, reuse existing conduits/duct banks for routing of new conductors. Prior to reusing any existing conduit pathways, the Contractor must field-verify, proof, and mandrel-test the ducts to ensure structural integrity and adequate physical fill capacity for the new 12.47kV insulated conductors. Where new duct banks are required, all conductors are to be placed in concrete encased duct banks except crossing major roadways or airfields where open cut is not permitted. Where new ducts are required that cross major roadways or flight line jack and bore (directional drilling) shall be utilized to minimize disruptions to daily operations.

2.2.2.2. New underground duct banks shall be routed to avoid existing underground utilities and minimize road crossings.

2.2.2.3. The underground duct bank system shall be installed 36” below grade and marked with magnetic warning tape.

2.2.2.4. The duct shall be two-cell, with 5” polyvinyl chloride (PVC) conduit and duct spacers installed.

2.2.2.5. Parking lot areas will be open cut and rebuilt to match existing.

2.2.2.6. Contractors shall trench as needed to install conductors and required equipment.

2.2.2.7. The trench shall be backfilled in lifts and compacted systematically to protect the high-voltage lines and prevent future ground sinking.

2.2.3. Structural

2.2.3.1. Demolition Work

Contractor shall be permitted to cut poles a minimum of 2 feet below grade.

Any poles demolished per this means must be shown on as-built drawings to reflect GIS (Geospatial/mapping data). Coordinate with KAFB GIS/Mapping office for location of the below grade reminisce of the poles.

All holes shall be backfilled and leveled to the existing grade.

Contractor shall completely demolish and remove all concrete equipment pads, piers, dead-end structural foundations, and physical footings associated with the decommissioned Substation 3 and Substation 10 sites.

All structural demolition debris must be hauled off-base and disposed of in accordance with applicable environmental regulations. Resulting excavations must be backfilled with structural fill, compacted in systematic lifts, and graded to match the surrounding terrain.

2.2.3.2. New Renovation Work

Provide design and install wooden poles, corner poles, super structure, or guy wires where required. All newly installed power poles shall be designed to carry the maximum of the calculated design loads, the power poles are to be sized utilizing the National Electrical Safety Code (NESC) strength reduction factor for the applicable grade of pole utilized. The site-specific design requirements are to be obtained by the American Society of Civil Engineers (ASCE) 7 hazard tool. Electrical poles are to be a direct plant install designed and constructed to support all the applicable design loads and meet the requirements of the International Building Code (IBC) 21 Section 1807.3 Embedded poles and posts. The use of guy wire is permitted for lateral stability. Medium voltage transformer concrete pads shall be required; precast concrete pads are acceptable.

2.2.3.3. Geotechnical Analysis

A geotechnical analysis shall be performed for new construction. The report must at a minimum provide the applicable requirements set forth in the IBC Section 1803. The Contractor shall provide the geotechnical engineer with additional items as needed to include in the report required to support and or aide in the Designer of Record (DoR) design assumptions.

The DoR must follow the guidelines for the foundation recommendations provided by the geotechnical engineer for the specific soils encountered during the soils analysis.

The geotechnical report will need to provide recommendations on the amount/depth of soil from the surface that should not be considered adequate for structural support based on, but not limited to, soil erosion, frost depth, etc. The structural design depth must be based on this recommendation.

2.2.4. Electrical

2.2.4.1. Demolition Work

Removal of existing substation equipment including transformer & switchgear, capacitor bank, dead-end structure, foundations, chain link fence. Feeders: Wood poles, insulators, hardware, conductors some underground (UG), and other replaced components.

2.2.4.2. New Renovation Work

The new 10 MVA, 4-feeder, 12.47 KV Unit Substation 10 shall utilize high-side switching and interrupting devices featuring a 46 KV high-side SF6 circuit breaker. All newly constructed 46kV components must be designed to meet 69kV rated insulation class requirements for future grid compatibility. In alignment with the conceptual plans, the substation shall be enclosed by a reinforced block wall and metal gate equipped with safety and maintenance lighting, while meeting all applicable AT/FP standards. To ensure safe operations and maintainability, the primary switchgear must be housed in a weather-protected, environmentally controlled interior enclosure that allows maintenance personnel to operate and service the equipment completely sheltered from ambient weather conditions. The new substation must be fully sited, and all associated 46kV power lines must be routed and installed in accordance with the project drawings.

2.2.4.3. In upgrading the distribution system, all transformers should be evaluated and upgraded to meet the new voltage configurations. All transformers will need to be equipped with AF approved electric meters. These meters will need to be connected to the communications network so that they can communicate meter readings to the front-end unit. The connections and equipment for the service entrance to the New Mexico Air National Guard complex must also be evaluated and upgraded to ensure that it meets the requirements of the new Substation 10 configuration. Consideration should be given to the potential development of the Zia Park Area, and the new electrical configuration should be designed to handle the proposed additions.

Electrical service entrances related to this distribution system should also be upgraded to match the new configuration. The sectionalizers currently used to de-energize transformers for maintenance should also be removed and switches should be installed so that equipment can be easily and safely de-energized.

2.2.4.4. A connection should be made between the Substation 3 lines and the AFSIC switch. This switch and transformer shall be field verified and evaluated and suitable replacement will be required. A connection also needs to be made to the existing Substation 1A. When these connections are made, phasing and rotation should be considered to ensure that the Substation 10 configuration will be able to work with the configuration of the existing substations. The existing Substation 3 provides redundancy to the Safety Substation, and the existing Substation 10 provides redundancy to Substation 23. A 69kV switch should be placed on the outside of the new Substation 10 to reduce outages. Another medium voltage switch should be installed directly outside of the substation to allow for the substation to be bypassed for maintenance. The development of the Zia Park area needs to be considered during design to ensure that the new Substation 10 will have adequate capacity to handle the expected load. The safety center is expanding to include a 340k SF facility that will require a new 4 MVA load to a 7.5 MVA transformer and some of this new load may need to be transferred to Substation 3/10; this shall be evaluated during design. The new Substation 10 design must account for being able to support Substation 23 or the safety center for both the existing and planned future loads.

2.2.4.5. Electrical System Analysis & EasyPower Modeling: The DoR shall receive, update, and maintain EasyPower electrical analysis model to reflect all new and modified infrastructure. Deliverables shall include fully updated and validated calculations complying with all UFC’s to include UFC 3-501-01:

Load Analysis, Short-Circuit Fault Calculations for all buses, Protective Device Time-Current Coordination Study utilizing a fuse-blowing coordination philosophy with at least 2 cycles separation, Arc Flash Hazard Analysis, and System Voltage Drop Computations.

2.3. PDB Methodology

The selected D/B shall execute a PDB methodology that emphasizes open-book collaboration, early risk reduction, and cost transparency.

Design advancement will be tied to cost-model maturity and risk mitigation rather than design percentages.

To achieve this, the D/B will progressively develop the project design, from concept to a documented Basis of Design and into construction. Throughout this process, a transparent cost model shall be maintained and updated. A comprehensive risk register shall be developed to track technical, cost, and schedule risks, with mitigation strategies created in partnership with the Government. A baseline project schedule shall also be established, outlining all major milestones from design through commissioning. The D/B shall develop the project design through progressive stages including:

• Conceptual Design

• Preliminary Design Development up to 65% design to start developing the

Guaranteed Maximum Price (GMP)

• Basis of Design documentation

• Finalization of design

Design advancement shall be progressed by Government review, cost model updates, and risk evaluation rather than fixed design percentage thresholds alone.

Design development shall include coordination with User, Government stakeholders, and technical authorities and KAFB High Voltage Shop.

2.3.1. Phase-1 (Validation, Preconstruction, and Design Services)

The D/B shall support the Government in achieving the following objectives:

• Confirm project scope and performance requirements

• Develop the Basis of Design

• Develop project from conceptual to 65% design to start developing the GMP

• Validate project budget and schedule

• Identify and actively retire project risks

• Establish a mutually agreeable construction price based on validated design and cost model maturity by KAFB Time on Target (TOT) date of May 2027 or sooner.

Delivery of the following key documents is required to determine the GMP:

• 65% Basis of Design Report

• 65% Design Plans and Specs

• Owner and D/B shall agree on Final Project Scope Requirements

• Cost Estimate/ Estimated Cost for Construction

• Owner and the D/B shall agree on the Final Contract Price/GMP prior to commencing

Phase 2.

• The Final Contract Price/GMP shall be agreed upon by KAFB TOT date of May 2027 or sooner.

• Construction Schedule

• Risk Register Design Development

• Conceptual Design (35%): D/B shall submit a conceptual design package that will include as applicable:

o Drawings include basic floor plans, rough architectural and structural sections and details, preliminary mechanical and electrical equipment and distribution system layouts, developed elevations, schedules and tables, completed Life/Safety data sheet, and IBC and UFC code analysis, and any other information required to clearly illustrate and describe the design.

• Preliminary Design (65%): D/B shall submit a preliminary design package that will be the basis for negotiating the GMP. Package shall include the delivery of the key documents to determine GMP.

o Drawings to include final basic floor plans, developed architectural and structural sections and details, detailed mechanical and electrical equipment and distribution system layouts, detailed elevations, schedules, tables, completed Life/Safety data sheet, and IBC and UFC code analysis, and any other information required to clearly illustrate and describe the design.

• Pre-Final Design (95%): Pre-final design package shall include, as applicable, the following incorporating responses to all Government review comments and backcheck comments from previous submittals.

o Contract drawings to include all floor plans, sections, details, elevations, completed schedules and tables, Life/Safety data sheet, and general notes as required to include the basis for design clearly defined on the first sheet of each discipline.

• Final Design (100%): Final design shall include all drawings, specifications, Design Analysis Report (DAR) with all comments and corrections incorporated.

o The design by the DoR at this level shall be a complete, back checked, and fully corrected set of construction documents. All final drawings shall be sealed, stamped, signed, and dated by a project architect/engineer/principal of the firm registered in architecture and/or engineering as appropriate.

2.3.2. Phase-2 (Final Project Scope and Construction)

Owner and D/B agree on the final project scope and cost. Modification to the Contract to complete the construction phase.

3. COST MODELING

The D/B shall develop a transparent, open-book, progressively refined cost model throughout Phase 1 (the Design Phase). The cost model shall progress from a Class 5 estimate at conceptual design, to a Class 3 estimate during design development, and shall finalize as a Class 1 estimate upon final submittal of the Phase 1 deliverables to establish the GMP.

Cost estimates shall be updated continuously as design develops.

The cost model shall serve as the primary basis for negotiating the final construction price.

The D/B shall provide:

• Major cost drivers and scope sensitivity analysis

• Construction cost estimates by system and discipline

• Escalation assumptions and market validation

• Contingency analysis tied to quantified risks

• Subcontractor and trade-level pricing validation where available

• Clear reconciliation between successive estimate updates

4. RISK MANAGEMENT

4.1. Risk Register

The D/B shall support development and continuous maintenance of a live, jointly managed risk register. The risk register shall identify:

4.1.1. Project Specific Technical Risks

4.1.1.1. Challenges associated with the phasing and outage plan with a clear delineation of installation and demolition. Flexible in coordinating work near any scheduled outages, missions, or other construction activities that may disrupt or interfere with the User’s mission. This flexibility is essential to ensure minimal disruption to ongoing operations and to maintain a productive working environment for all stakeholders involved.

4.1.1.2. New infrastructure shall be installed prior to the demolition of the existing infrastructure. It should be noted that several buildings related to this project are mission critical, including Sandia National Labs and Lovelace Medical facilities. Prior to construction, the buildings listed as mission critical or located within these areas shall be notified and the appropriate actions taken to minimize any downtime or interference to the operation of these facilities.

4.1.2. Cost and Market Escalation Risks

4.1.2.1. Supply chain volatility for specialized/long-lead materials, availability of local labor, disruption due to installation security/access of construction vehicles.

4.1.3. Schedule Risks

4.1.3.1. Delays that threaten construction completion, delays due to unforeseen site conditions.

4.2. Mitigation Strategies

Strategies shall be developed collaboratively with the Government and shall include:

4.2.1. Project-Specific Strategies

4.2.1.1. Develop construction phasing for outages, installation of electrical equipment, and demolition with less interference in affecting mission critical buildings. Diligent field investigating throughout the life of the project to allow for accurate design drawings, materials, and equipment needed for a complete project.

4.2.2. Risk Retirement Actions Tied to Design Decisions

4.2.2.1. Finalizing optimal outage phasing, sequencing the installation of electrical equipment, understanding current infrastructure layouts, and demolishing existing infrastructure.

4.2.3. Cost Impacts of Risks (Quantified Where Possible)

4.2.3.1. Continuously modeling the financial and schedule impacts of long-lead material delays within the open-book cost model and collaboratively allocating appropriate contingencies to absorb market volatility without exceeding the $27.8M estimate.

5. PROJECT SCHEDULE

The D/B shall develop and continuously update a baseline integrated master schedule including:

5.1. Project-Specific Schedule Elements

5.1.1. Critical path tracking outages, phasing, sequencing on installation, field investigation, and demolishing of existing infrastructure.

5.2. Design Milestones Tied to Decision Gates

5.2.1. Field investigation to understand the current infrastructure, finalization of electrical load calculations, and sequencing of installation.

5.3. Construction Sequencing and Phasing

5.3.1. Phased logistics plans demonstrate how construction and materials delivery will occur without impeding KAFB installation activity and any possible concurrent construction activities (if applicable).

5.4. Long-Lead Procurement Strategy and Release Timing

5.4.1. Procurement schedules for specialized critical-path materials and electrical systems.

5.5. Commissioning, Validation, and Turnover Activities

5.5.1. Dedicated schedule durations for full systems integration and testing prior to

Government acceptance.

Schedule updates shall be integrated with cost model updates and risk register changes.

6. ATTACHMENTS

6.1. Refer to Attachments for design requirements and additional details. D/B shall verify and validate all Attachment.

• Attachment - 100% Drawings Demo Sub3 - Rebuild Sub10 MHMV080002

• Attachment - Specifications Demo Sub3 - Rebuild Sub10 MHMV080002

• Attachment - Design Analysis Demo Sub3 - Rebuild Sub10 MHMV080002

6.2. Refer to the following documents for KAFB project requirements.

• Attachment Engineering and Construction Requirements

• Attachment KAFB Low and Medium-Voltage Electrical Design and Equipment

Requirements

• Attachment Guidance for GIS Data and As-Builts

• Attachment Env. AF813_MHMV200009 Sub9_MHMV120009

Sub24_MHMV080002 Sub10