Attachment 1 - Statement of Work.pdf

DENVER ARTCC

UNDERGROUND UTILITIES REPLACEMENT

AND

PARKING LOT REFURBISHMENT

APRIL 2024

DESIGN BUILD REQUIREMENTS

Prepared by: Federal Aviation Administration ATO Tech Ops Engineering Services

Northwest Mountain EnRoute AJW-2W12B/E

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DENVER ARTCC (ZDV)

UNDERGROUND UTILITIES REPLACEMENT AND

DESIGN BUILD SOW

I. BACKGROUND. The underground mechanical utilities that serve the Denver Air Route Traffic Control Center (ARTCC), ZDV, are aging, with some beyond their expected lifespan and others that were installed when the building was constructed in the early ‘60s. The Bipartisan Infrastructure Law (BIL) provides a unique opportunity to perform lifecycle replacement of these utilities to reduce the risk of failures and ensure uninterrupted facility service. The work includes utility investigations to survey and locate all subsurface utilities in the work areas. Additionally, the Federal Aviation Administration (FAA) will use this opportunity to renovate the facility parking areas and sidewalks.

II. CONTRACT TYPE. This project is a design-build task to provide design-engineering and construction services to complete underground utility infrastructure replacement and refurbish limited facility parking areas and sidewalks in accordance with the requirements provided herein.

III. SCOPE OF WORK. Provide underground utility investigation, site survey, engineering design, subcontractor procurement, and construction to complete the following work.

Provide utility investigation and evaluation to determine extent of replacement based on service life.

Based on investigation results, replace underground site utilities installed prior to the year 2000 and/or with a remaining service life of less than 20 years: gas, storm, sanitary, domestic water, manholes, fire water loop and hydrants.

Refurbish limited facility parking areas and sidewalks.

A. Design Criteria. Conform to the latest edition of the following Codes, Regulations, Orders, Standards, and Policies in effect prior to the project design completion date. Contact the FAA for direction if a conflict exists between applicable regulations, or between regulations and FAA requirements.

FAA Regulations, Orders, Standards, and Policies.

Federal, State, municipal and local Codes.

National Fire Protection Association (NFPA) Codes and Standards.

Occupational Safety and Health Administration (OSHA) Regulations.

Architectural Barriers Act (ABA) Accessibility Standards.

International Building Code International Plumbing Code

B. Design Considerations. Ensure that the design is based on the following conditions.

1. ZDV will remain operational throughout the project, providing continuous Air Traffic Control operations. Ensure that facility operations, security, mechanical systems, and personnel are protected from adverse impacts during the work.

2. Operational Risk Management factors and design considerations to mitigate and minimize the risks to the National Airspace System.

3. Investigate, reconfigure, redesign, and/or relocate underground utilities to minimize future operational risk and improve operational performance.

4. Provide the best utility layout to properly and easily maintain the facility equipment, including ease of access for preventive and corrective maintenance, and replacement.

5. Use past projects as-built data, facility condition assessment, topographical surveys and other documentation included with the solicitation to assist with proposal development and utility investigation. See attachments.

6. Contact the FAA regarding conflicts identified within this task order and document the resulting resolutions.

7. Obtain approval from the Contracting Officer (CO) and/or Contracting Officer’s Representative (COR) to begin each phase of construction. Every phase must be reviewed and approved for acceptance by the by the CO and/or COR.

A Notice to Proceed will be issues to the contractor prior to the start of the onsite construction work.

C. Design Requirements. The Project Design shall include, but is not limited to:

1. General.

a. Project Design requirements apply to the area bounded by the ZDV property line, excluding the FAA Child Care Facility.

b. Provide professional services to develop a comprehensive Project Design, including specifications, drawings, construction cost estimate; and other design documents required herein.

c. Use ProjNet DrChecks application for the project review and coordination process.

d. All review comments generated during the design phases must be addressed and resolved with FAA approval.

e. Comply with FAA drafting standards FAA-STD-002H, Engineering Drawing Preparation & Support. Prepare drawings on ANSI D size sheets. See Attachment 2 - REF FAA Standard FAA-STD-002H.

2. Provide utility investigation.

a. Develop a scope of work (SOW) for a utility investigation (UI) consistent with the level of work necessary to support the Project Design.

b. Engage a qualified, licensed Subsurface Utility Engineering (SUE) firm to provide utility designating, locating, and mapping services based on the UI SOW. The firm shall perform the work in accordance with ASCE 3822, Standard Guideline for Investigating and Documenting Existing Utilities and requirements stated herein.

c. Provide UI deliverables that accurately display the location of underground utilities within the project construction area at the appropriate Quality Levels for the Project Design.

d. Determine SUE Quality Levels of the locate information on the sound judgment of the Subsurface Utility Engineer in charge of the project, with considerations for relative congestion of utilities and potential conflict areas.

e. Utility information shall be surveyed, compiled as a distinct level or layer of computer-aided design and drafting drawings and utility report. Provide utility information on project construction drawings at the necessary level of detail for the project.

f. Use standard symbols to SUE to present the information in a logical, easily interpreted format on the deliverables. Include a legend and list of acronyms/initialisms to define symbology used.

g. Mark centerline of single-conduit lines, and outside edges of multi-conduit systems.

h. Indicate utility type and ownership; date of depiction; quality level; end points of any utility data; operational status (e.g., active, abandoned, out of service); line size and condition; number of jointly buried cables; and encasement.

i. Survey surface features of subsurface utility facilities and systems, if such features have not already been surveyed by a registered professional. If previously surveyed, review survey data for accuracy and completeness.

j. Repair all materials and objects at test holes to original condition or better. Use flowable fill in paved areas where proper compaction of replaced soil, bedding, aggregate, etc. is not possible.

k. Perform condition assessments of piping. Inspect utility piping to determine condition and wall thickness.

Utilize video, ultrasonic, visual techniques, or other methods as necessary to determine the feasibility of connection points between new piping and existing piping.

l. If abandoned subsurface utilities of unknown function or status are found, then obtain, record, and depict information on such utilities to a quality level commensurate with the assigned task.

m. Coordinate with local utilities owners (electrical company, city water department, fire department and appropriate municipal organizations) for utility locate permitting, tie-ins, and work outside of ZDV property.

n. Require an SUE UI in the construction contract documents to update the Quality Level data for utilities installed or exposed during the construction.

3. Replace exterior underground site utilities.

a. Replace all system devices (i.e., piping, valves, cleanouts manholes, hydrants, etc.). Provide new system devices, including any additional devices, in accordance with building codes and best practice.

b. Replace the system from a point-of-connection (POC) within the building (if accessible and possible) or at a feasible location nearest the building entrance (where interior POC is not possible). Coordinate with ZDV to determine the POC to ensure limited outdated interior lines are included in the work as recommended by the utility investigation.

c. Based on the results of the utility investigation replace the following utility systems installed prior to the year 2000 and/or with a remaining service life of less than 20 years.

(1) Domestic water piping and backflow preventers.

(2) Sanitary sewer piping and manholes.

(3) Storm water drainage and manholes; including all drainage unable to sustain the flow rate of a 10-year design storm event.

(4) Fire water piping, including underground mains and hydrants.

• Provide fire watch and necessary coordination to minimize the risk to the facility.

(5) Natural gas piping.

• Coordinate replacement to minimize impact to the operations of the facility.

d. Electrical power raceways, duct banks, and conductors; communication lines (i.e., fiber optic, etc.); fuel tanks;

and fuel piping are excluded from the utility replacement work.

4. Refurbish limited facility parking areas and sidewalks.

a. Investigate the existing pavement conditions, including the subbase, drainage, settling, heaving, subsurface water, etc.

b. Include design solutions based on the investigation findings and existing conditions, including replacement of the pavement subbase, subsurface drainage, grading, runoff detention, etc.

c. Repave the West section of the parking lot.

d. Demolish concrete islands in East section of parking lot to achieve proper stormwater runoff.

e. Restore the grade and replace the sidewalk in the settling section on the Northeast side of the Power

Services building.

f. Install bollards around select equipment as defined by the COR.

g. Restripe parking and drive areas affected by the refurbishment.

D. DESIGN SUBMITTAL REQUIREMENTS.

1. Schematic Design (SD) Documents - 10% Submittal.

a. Basis of Design document defining the design intent for each discipline.

b. Basic Civil, Structural, Mechanical, Electrical, etc. design drawings.

c. Outline specification with Table of Contents.

d. Graphic and written information in sufficient detail to demonstration that the design complies with the project requirements and intent.

e. Cover sheet with approval signature block that includes the Position Description, Routing Code, Signature Block, and Date for the following FAA personnel:

(1) ZDV Air Traffic Support Manager - Planning & Requirements, TWDV1-ZDV

(2) ZDV ARTCC District Facilities Manager, WWS1-ZDV

(3) ZDV ARTCC Environmental SSC Manager, WWS12-ZDV

(4) Manager, EnRoute/Flight Service Station Engineering Group, AJW-2W12B

(5) Manager, Construction/Installation, AJW-2W12E

(6) Program Implementation Manager, AJV-C35

2. Interim Design (ID) Documents – 75% Submittal.

a. Updated Basis of Design document stating:

(1) Design intent for each discipline.

(2) All calculations to support design drawings and equipment selections.

(3) Selection cut sheets for selected equipment and material.

(4) Soils report and other pertinent geotechnical information.

(5) Parking lot asphalt core evaluation reports

b. Updated Civil, Structural, Mechanical, Electrical, etc. design drawings with major equipment selections and pertinent structural, mechanical, and electrical provisions. Drawings in sufficient graphic and written detail to demonstration that the design intent complies with the project requirements and design criteria.

c. Updated specifications.

d. Preliminary Commissioning Plan, as applicable.

3. Completed Design (CD) – 100% Submittal:

a. A matrix that indicates completion and incorporation of all agreed and accepted comments from the 75% Design review.

b. Drawings that demonstrate the design complies with all FAA and applicable statutory requirements.

c. Full set of specifications.

d. Updated DDH with code references.

e. Final Commissioning Plan, as applicable.

f. Phasing Plan to implement the work without interruption to facility mission critical functions including

Construction Phasing Plan for each phase of work.

g. Develop a complete proposed/planned schedule outlining major, pre-construction meetings for each phase of work, construction and project close out activities for each phase of work. The schedule must include a suggested period of performance for construction based on the Preliminary Phasing Plan and construction scope of work.

4. Final Design Submittal:

a. The Final Design shall include all items noted above for the Completed Design 100% updated to reflect all accepted comments from the 100% Design Review Phase

b. Drawings and Specifications shall be signed & sealed by licensed professional engineers for their specific disciplines. The Civil Engineering and Structural Engineering drawings shall be signed and sealed specifically by an engineer licensed in the State of Colorado.

E. PRE-CONSTRUCTION SUBMITTALS. Provide pre-construction submittals for each phase of work; approval shall be a collaborative process between the FAA ES Engineering Team, the CO/COR and the facility stakeholders. Design/build contractor must not start work unless directed by the Contracting Officer. All submittals must be coordinated and approved before the start of each phase.

F. DELIVERABLES. Provide deliverables in a reproducible format, in both hard copy and electronic format.

ITEM DELIVERABLE DUE DELIVERED TO ACCEPTANCE CRITERIA

1. Schedule for site survey and all phases of the design effort.

Provide NLT 30 calendar days after award.

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

On time delivery of submittal item for review. FAA will review and respond with review comments within 7 calendar days of receipt.

2. Schematic Design Submittal Package 10%.

No later than (NLT) 45 calendar days after site survey.

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

On time delivery of a complete package for review. FAA will review and respond with review comments within 30 calendar days of receipt.

3. Interim Design Submittal Package 75%. NLT 65 calendar days after SD Review Meeting.

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

On time delivery of a complete package for review. FAA will review and respond with review comments within 30 calendar days of receipt.

4. Completed Design Submittal Package 100%

NLT 45 calendar days after ID Review Meeting

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

On time delivery of a complete package ready for review. FAA will review and respond with review comments within 15 calendar days of receipt.

5. Final Design Submittal Package NLT 25 calendar days after CD Review Meeting

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

On time delivery of a complete package ready for construction.

6. Post-construction submittals must be submitted with as-built information at the completion of each phase of work.

Provide NLT 30 calendar days before CAI for each phase of work.

Contracting Officer, EnRoute Engineering Section, Project Engineer and COR.

These documents must be part of project close out and must be cataloged and organized with operation and maintenance manuals for each phase. Because this project contains several phases of work, each phase must be fully documented before covering all new work.

Distribution of Final “as-built” submittals:

Organization Drawings- Full/Half Size

Specs. Basis of Design

Proposed Construction

Schedule

USB of Each Submittal

Engineering Services 1/1 1 1 1 1

Facility – ZDV 1/1 1 1 1 1

Planning and Requirements 0/1 1 1 1 1

END OF SOW

ATTACHMENTS

1. REF TOPOGRAPHIC SURVEYS

2. REF FAA STANDARD FAA-STD-002H

3. REF DRAWINGS

4. REF FACILITY CONDITION ASSESSMENT