B08_Attch_01_NAMA_318722_Design-Build_Project_Scope.pdf

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NATIONAL MALL AND MEMORIAL PARKS

WASHINGTON, DC

SOLICITATION 140P2023R0020

REHABILITATE SEAWALLS AND SHORELINE

PMIS NAMA 318722

DESIGN-BUILD (DB) PROJECT SCOPE

(DB Request for Proposal (RFP))

NATIONAL PARK SERVICE (NPS)

DENVER SERVICE CENTER (DSC)

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TABLE OF CONTENTS

1.0 PROJECT INTRODUCTION

1.1 SCOPE

1.2 NPS/DSC SHAREPOINT PROJECT WEBSITE

1.3 LOCATION

1.4 BACKGROUND

1.5 DESCRIPTION

1.6 SCHEDULE

1.7 NPS CONTACTS & ADDRESS:

2.0 PROJECT REQUIREMENTS

2.1 GENERAL REQUIREMENTS

2.1.1 Scope of Work and Project Summary/Requirements

2.1.2 Definition of Contract Line Items

2.1.3 Progress Payments

2.1.4 Project Meetings

2.1.5 Project Schedule

2.2 DESIGN REQUIREMENTS

2.2.1 DB Design Development (DD) Documents and DB Construction Documents (CD)

2.2.2 Environmental and Sustainability Requirements for Design

2.3 CONSTRUCTION REQUIREMENTS

2.3.1 Environmental and Sustainability Requirements

2.3.2 Schedule of Values

2.3.3 Construction Support

2.3.4 Submittals During Construction

2.3.5 Construction Coordination Notification

2.3.6 Digital Images

2.3.7 Structural Serviceability

2.3.8 Working Hour Restrictions

2.3.9 Temporary Services

2.3.10 Access

2.3.11 Preservation of Adjacent Features

2.3.12 Existing Utilities

2.3.13 Hauling Restrictions

2.3.14 Accident Prevention

2.3.15 Temporary Controls

2.3.16 Field Engineering

2.3.17 Project Close-out

2.3.18 Substantial Completion and Final Inspection

2.3.19 Sample & Template

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2.3.20 Storm Preparedness & Response Plan

2.4 COMPLIANCE AND PERMITTING REQUIREMENTS

2.4.1 Compliance

2.4.2 Regulatory Permitting

3.0 PERFORMANCE REQUIREMENTS

3.1 DESIGN IMPERATIVES

3.2 SUSTAINABILITY

3.3 FACILITY PERFORMANCE

3.4 ELEMENTS AND PRODUCTS

4.0 TECHNICAL REQUIREMENTS

4.1 FIXED DESIGN CRITERIA (DC 0)

4.1.1 Section Includes

4.1.2 Related Requirements

4.1.3 Definitions

4.1.4 Basic Function

4.1.5 Structural Criteria

4.1.6 Foundations

4.2 SITE CRITERIA (DC G)

4.2.1 Section Includes

4.2.2 Excavating and Grading

4.2.3 Erosion and Sediment Controls

4.2.4 Site Clearing

4.2.5 Site Demolition and Relocations

4.2.6 Hazardous Substances, Waste and Remediation

4.2.7 Site Earthwork

4.2.8 Topsoil

4.2.9 Fill and Borrow

4.2.10 Basic Function

4.2.11 Health and Safety Criteria

4.2.12 Structural Criteria

4.3 SITE IMPROVEMENTS CRITERIA (DC G1)

4.3.1 Section Includes

4.3.2 Exterior Site Signage

4.3.3 Wayside Interpretive Sign

4.3.4 Exterior Furnishings

4.3.5 Basic Function

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1.0 PROJECT INTRODUCTION

Park Acronym and PMIS Number: NAMA 318722

Project Title: Rehabilitate Seawalls and Shoreline

Project Drawing Number: 802/177531

1.1 SCOPE

In accordance with terms and conditions of the Contract, the Design-Build (DB) Contractor shall perform the work of this Request for Proposal (RFP) for the National Park Service (NPS) as described below.

Architect-Engineer (DB) Services required in this RFP shall be performed by licensed Architects and Engineers registered in Washington, D.C.

The work of this task order shall be performed in accordance with the Denver Service Center (DSC) Design-Build (DB) Workflows website.

The DB homepage includes links to design phases describing required workflow process from Predesign (PD) through Construction Documents (CD). Each design phase webpage contains links to definitions, forms, templates, samples, and guidelines.

The DB homepage also includes links to the Design Standards and Design Deliverables sections which provide design requirements and criteria that shall be used for completing the work of this contract:

A. Design Standards are arranged by discipline and/or specialty.

B. DB Design Deliverables - Content and Format Requirements:

1. Design phase submission requirements for

a. Technical content

b. Submission format

DB Contractor is required to complete the design of the project to a 100% Final level of completion. The design is currently completed to an approximate 30% design level of completion.

In addition, the Information section has links directly to:

• Definitions: A list of terms relevant to design and construction in National Parks.

• Forms/Templates/Samples/Guidelines: A list of forms, templates, samples, and guidelines used for a typical project.

• Law/Regulations/Polices/Guidance: A list of sources for retrieving laws, regulations, policies, and guidance applicable to NPS projects.

• Quality Assurance (QA) Guideline & Review Checklists: Overview of the DSC QA

Process for reviewing Design Documents.

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In case of conflict between this task order and the DSC DB Workflows website, this task order shall take precedence and shall be used in lieu of conflicting portions.

The DB Contractor remains fully responsible for determining if the standards or provisions cited on the DSC DB Workflows website have been revised or updated. Any such conflicts between the website and the identified standard or provisions shall be brought to the attention of the Contracting Officer (CO).

1.2 NPS/DSC SHAREPOINT PROJECT WEBSITE

Use the NPS/DSC SharePoint Project website to host and manage project communication and documentation until Final Completion. The project website will be used for:

Project directory

A. Project correspondence B. Meeting agendas and minutes C. Contract modifications documentation and logs D. RFI (Request for Information) form and processing E. Task and issue management F. Photo documentation G. Baseline schedule, schedule updates and calendar management H. Submittal form and processing I. Drawing and specification document hosting, viewing, and updating J. Online document collaboration K. Reminder and tracking functions L. Archiving functions M. Notification of submittal and RFI statuses and current responsible party

Submit to CO a list of employees needing access to the NPS/DSC SharePoint Project website.

Department of Interior (DOI) will send these users an invitation to register. Once registered on the DOI website, users will be given access to the project website. For login procedures and other SharePoint information, refer to the DSC Workflows SharePoint Project Website page.

Users are required to have Internet Explorer (IE) version 7 or later and Adobe Acrobat Professional version 9 or later.

1.3 LOCATION

National Mall and Memorial Parks (NAMA/”Park”) – West Potomac Park and Tidal Basin and specifically the four general work areas listed below:

A. Tidal Basin East (TB-E) B. Tidal Basin West (TB-W) C. West Potomac Park - South (WPP-S) D. West Potomac Park - North (WPP-N)

More specific information regarding the location and limits of work areas can be found in Specification Section 01 11 00 – Summary of Work.

https://www.nps.gov/dscw/precon_spproj.htm

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1.4 BACKGROUND

The stone seawalls throughout West and East Potomac Parks were constructed in the late 1800s as part of a land reclamation project on the Potomac River Flats to assist with river navigation and flushing. In the years since their construction, the seawalls have significantly settled due to their construction on top of soft soils. Despite minor repairs and modifications of the seawalls, predominately occurring before 1950, the settlement and deterioration of the walls allows for regular overtopping and inland flooding in select areas of the Tidal Basin and West Potomac Park. Greater areas are overtopped after extreme weather events, threatening historical resources and park infrastructure. Portions of the walkways on either side of the Inlet Bridge are underwater twice daily, creating a hazardous condition for Park visitors. Due to the settlement of the seawalls and adjacent land, and the subsequent decrease in elevation above mean water level, the overtopped areas do not drain effectively or quickly. When the water does recede, the overtopped areas are often littered with wood debris and other trash from the river. Manmade litter, such as trash, plastics, and metal, are mixed into the woody debris which leads to concerns for sanitation and health safety for the Park’s visitors and NPS employees. Significant cost and effort are expended by NPS staff to remove the debris load after overtopping events.

The mortar between the blocks of stone masonry along the southern half of West Potomac Park has eroded completely, and water seeps through these open joints during the normal ebb and flow of the river. When water returns through the open joints, it carries soil material back to the river. Over time, this has led to a significant loss of material and a collapse of the seawall into the river. Riprap has been placed along the shoreline, behind the remnants of the stone wall, to slow down the erosion of the shoreline. The riprap has become an attractive nuisance to visitors who attempt to clammer down the improvised riprap revetment to reach the water.

The Tidal Basin and West Potomac Park experience large numbers of visitors every day of the year with peak visitation during the spring with the blooming of the cherry trees. The current condition of the seawalls affects visitor use and experience because the pedestrian trails in many areas have degraded, creating trip and fall hazards, and are inaccessible because of standing water and mud, and debris left behind from daily flooding. This has led to reduced public access and damage to historic cultural landscapes and Park infrastructure, resulting in negative impacts to visitor use and experience.

The rehabilitation of the seawalls is needed primarily because the existing serviceability deficiencies of the seawalls negatively impacts the experience and safety of park visitors and drowns out vegetation, which negatively affects the landscapes.

NPS intends to rehabilitate portions of the Tidal Basin seawall (TB-E and TB-W) and the entire West Potomac Park seawall (WPP-S and WPP-N) in accordance with the National Environmental Policy Act (NEPA) of 1969 as amended. The rehabilitation includes approximately 6,400 linear feet of seawall that is administered by NPS through NAMA and located in the District of Columbia.

The purpose of the proposed action is to:

A. Restore the historical functional height of the seawalls B. Improve the historical cultural landscape and visitor experience along the shorelines

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C. Minimize soil erosion and safety hazards D. Provide localized mitigation from nuisance flooding. The restoration of the wall height will mitigate localized, nuisance flooding or ponding but will not be part of a larger flood protection system.

NPS intends to contract with a DB Contractor to rebuild and elevate the seawalls to reestablish the historical functional height of the walls to provide 1) a sustainable solution that extends the life cycle of the seawalls and 2) to allow future elevation raises of the wall to respond to changing climate patterns, including flood events of greater height and frequency. The DB Contractor will remove the existing stone seawalls and construct new walls along the historical alignments.

The rehabilitation will reduce flooding during normal tidal and minor flood events and will eliminate loss of fill material from behind the seawalls. Stone from the historical walls will be salvaged and reused in construction of the new walls. The existing sidewalk on top of the seawall along the Tidal Basin will be replaced. Finally, the existing landscaping adjacent to each of the seawall systems will be rehabilitated. Repairs to the surrounding infrastructure will include grading, stormwater control, pedestrian/multi-use paths, curbing, and replacement of any site features (e.g., landscape, trees, benches, etc.) damaged or disturbed during construction.

For a more detailed history of the existing site refer to the Basis of Design Report (BDR) Section 1.

1.5 DESCRIPTION

The schematic design preferred solution is a pile supported concrete slab (relieving platform) which independently supports a concrete wall to eliminate additional loading and potential settlement of the compressible soils below the structure.

The original stones will be salvaged, resized and stacked to create a wall that visually mimics the original stacked stone wall.

Provisions have been included in the compliance and permitting documentation to allow for the use of a temporary cofferdam during construction. Figure 1 below depicts a section of the preferred solution.

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The DB Contractor has the latitude to change any of the following:

A. Pile types and spacing (must avoid disturbance to all utilities and planned improvements) B. Pile cap C. Pre-cast seawall support Z-Section (PC-SS-Z) D. FRP sheet piling cut off wall

The DB Contractor cannot change or eliminate the following requirements:

A. Top of proposed seawall elevations B. Installation of the rehabilitated wall along the historic wall alignments C. Salvage and re-use of existing historic ashlar seawall stone D. Relieving platform concept; must not impose additional loads on subsurface soils beneath sidewalk E. Text in Division 01 through 50 specifications which has been edited and is not apparently open to modification (i.e. open brackets, multiple options, etc.); the intent being that specifications have been developed to a point which establishes minimum project criteria to be carried throughout the design and construction of the project.

Figure 1-1: Schematic Design Preferred Seawall Solution (TB-E shown, representative)

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For a more detailed explanation of the requirements of the design refer to the BDR Sections 3 and 4 and Chapter 4 of this document.

1.6 SCHEDULE

Submit DB Design Development (DD) Documents, DB Construction Documents (CD), and As- Constructed Drawings to the NPS Project Manager (PM).

Complete work in this DB Project Scope according to the schedule referenced in Part I, Section F – Deliveries or Performance in the Project Solicitation Document.

Reference Specification Section 01 11 00 – Summary of Work, Section 1.3 Work Sequencing Criteria for additional requirements.

As-Constructed Drawings:

Complete As-Constructed Drawings no later than 91 calendar days after the Substantial Completion of each area within each the Tidal Basin (TB-E and TB-W) and West Potomac Park.

1.7 NPS CONTACTS & ADDRESS:

Contractual:

Contracting Officer (CO): Aaron Vollbracht, 720-670-1518, aaron_vollbracht@nps.gov Contract Specialist (CS): Bryan Pemberton, 303-987-6747, bryan_pemberton@contractor.nps.gov

Technical:

Project Manager (PM): Brent Nagen, 303-358-0772, brent_nagen@nps.gov Project Specialist (PS): Marcello Arroio, 720-701-0146, marcello_arroiobebiannosimoes@nps.gov Contracting Officer’s Representative (COR): Brent Nagen, 303-358-0772, brent_nagen@nps.gov Alternate Contracting Officer’s Representative (COR): Marcello Arroio, 720-701-0146, marcello_arroiobebiannosimoes@nps.gov

Address:

National Park Service – Denver Service Center 12795 West Alameda Parkway Post Office Box 25287 Denver, Colorado 80225 mailto:aaron_vollbracht@nps.gov mailto:bryan_pemberton@contractor.nps.gov mailto:brent_nagen@nps.gov mailto:marcello_arroiobebiannosimoes@nps.gov mailto:brent_nagen@nps.gov mailto:marcello_arroiobebiannosimoes@nps.gov

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2.0 PROJECT REQUIREMENTS

2.1 GENERAL REQUIREMENTS

2.1.1 Scope of Work and Project Summary/Requirements

The project will consist of the design and construction of:

A. The restoration of approximately 6,400 linear feet of historic seawall which has experienced settlement and loss of fill. The work will generally include rebuilding of the seawalls to prevent future settlement, restore the historic landscaping and provide a level of protection against flooding.

More specific information regarding the work elements, phases and special project requirements.

can be found in Specification Section 01 11 00 – Summary of Work.

The project will include, but not be limited to:

A. Upon award, determine and provide design schedule of work.

B. Review Schematic Design preferred alternative provided in the RFP package.

C. Review site data.

D. Provide additional hydrographic and topographic surveys (if determined necessary by DB team).

E. Perform geotechnical design including supplemental investigations and testing (if determined necessary by DB team).

F. Perform tree location, and DBH and tree canopy field survey and tree assessment by DB

Arborist; provide tree planting plans including tree mitigation required based on newly surveyed tree removals and finalize plans.

G. Perform asbestos sampling and testing program to determine applicable portions of Specification Section 01 35 23 – Safety Requirements can be required by D-B Contractor during construction. NOTE: As of 02/15/23 the NPS is considering performing the sampling, testing and reporting for asbestos and will issue a testing and reporting supplemental data report to the DB Contractors bidding the project. Further instructions on this item will be provided as an addendum to the solicitation package.

H. Complete the design of seawall improvements.

I. Submit DB Design Development and DB Construction Documents for review and approval, as required.

J. Submit list of required permits and obtain outstanding permits listed in the BDR.

K. Provide schedule of construction work.

L. Secure work area and provide for continued access to the Memorials and surrounding areas.

M. Install and maintain temporary construction elements (fencing, staging areas, piers, landing areas, cofferdams, floating debris/silt barriers across Tidal Basin, etc.).

N. Construct seawall improvements.

O. Return work area and adjacent areas to pre-construction condition.

P. Provide as-constructed drawings.

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2.1.2 Definition of Contract Line Items

The contract contains six (6) Contract Line Items (CLINS); five (5) of which are in the Base Bid and one (1) which is a Bid Option. The DB Contractor is expected to provide lump sum (LS) bid prices for each of the separate CLINS 1 through 6.

More specific information regarding the Contract Line Items can be found in Specification Section 01 27 00 – Definition of Contract Line Items.

2.1.3 Progress Payments

Progress payments will be made based on successful completed and accepted work items listed in the work breakdown structure. Refer to Specification Section 01 32 16 – Construction Schedule for additional information.

2.1.4 Project Meetings

The DB Contractor will be required to conduct both design and construction meetings to facilitate the successful coordination and completion of the work. Refer to Specification Section 01 31 00 – Project Management and Coordination.

2.1.5 Project Schedule

The DB Contractor will be required to fully develop a design and construction project schedule and submit as specified in Specification Section 01 32 16 – Construction Schedule.

2.2 DESIGN REQUIREMENTS

2.2.1 DB Design Development (DD) Documents and DB Construction Documents (CD) Prepare DB Design Development Documents and DB Construction Documents using English System of Weights and Measurements and according to DSC Design Standards and DSC Design Deliverables - Content and Format Requirements for DB Design Development Documents and DB Construction Documents.

List salient characteristics for products and materials specified. Refer to Guide for Specifiers.

Deliverables

A. Submit documents in native and PDF (Portable Document Format) file formats.

B. PDF files shall be unlocked to allow printing and saving.

C. See DB Submittal Requirements, Design Deliverables.

The following deliverables are required (refer to Section 1.6 for schedule):

A. Submit DB Design Development (DD) Documents for Review.

1. Draft DB Design Development Drawings.

2. Divisions 2 through 49 Outline Specifications.

3. Product File.

4. Statement of Structural Tests and Special Inspections.

5. Design Calculations.

B. Submit 100% Draft DB Construction Documents (CD) for Review.

1. 100% Draft DB Construction Drawings.

https://www.nps.gov/dscw/dstandards.htm https://www.nps.gov/dscw/del_designdevelopdb.htm https://www.nps.gov/dscw/del_constructiondb.htm https://www.nps.gov/dscw/loader.cfm?csModule=security/getfile&pageid=242817 https://www.nps.gov/dscw/del_submitformatdb.htm

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2. Divisions 2 through 49 Construction Specifications (Construction Specifications Institute (CSI) MasterFormat 04 Edition). The DB team DB shall utilize and modify the Divisions 2 through 49 Construction Specifications template documents provided and add other specific sections if pertinent to their proposed design solution. Use AIA MasterSpec to generate new specifications.

3. Product File.

4. Statement of Structural Tests and Special Inspections.

5. Design Calculations.

6. Checklists for internal review of drawings, specifications, calculations, and cost estimates.

a. Required documents for each submission are included and complete per contract requirements.

b. Required documents have been through a Quality Control (QC) review. NPS requires documentation and submittal of QC work performed.

7. NPS Review form with responses to DB Design Development Documents review comments.

C. Submit 100% Complete DB Construction Documents (CD) for Final Approval

1. 100% Complete DB Construction Drawings.

2. Divisions 2 through 49 Construction Specifications.

3. Product File.

4. Statement of Structural Tests and Special Inspections.

5. Design Calculations.

6. Checklists for internal review of drawings, specifications, calculations, and cost estimates.

a. Required documents for each submission are included and complete per contract requirements.

b. Required documents have been through a Quality Control (QC) review. NPS requires documentation and submittal of QC work performed.

7. NPS Review form with responses to 100% Draft DB Construction Documents review comments.

D. Submit Complete Stamped and Signed DB Construction Documents (CD).

1. Upon final approval of 100% Complete DB Construction Documents, submit Complete Stamped and Signed DB Construction Documents per following table for NPS archiving and general use.

2. The recipient of the files is TIC (Technical Information Center).

3. Final Construction Drawings shall be printed from native CAD (Computer Aided

Design)/BIM (Building Information Modeling) equivalent software (e.g. AutoCAD .dwg or Revit .rvt). Final Construction Drawings printed from secondary software (e.g. Adobe .pdf) are not acceptable as they often result in off-scale product.

4. DB team to stamp and sign cover sheet.

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2.2.2 Environmental and Sustainability Requirements for Design NPS established environmental and sustainability requirements for project. Notify CO if conflicts arise between performance of work and environmental and sustainability requirements.

NPS does not intend to limit alternative means of achieving these requirements.

For sustainability requirements for design, see Part 3 Performance Requirements and NPS Project Sustainability Checklist. Complete checklist by concisely explaining how each credit/requirement will be met.

2.3 CONSTRUCTION REQUIREMENTS

2.3.1 Environmental and Sustainability Requirements

Specific sustainability requirements generated in design will dictate more stringent environmental requirements for this project. Refer to Part 3 Performance Requirements and NPS Project Sustainability Checklist. General requirements:

A. Site Disturbance: Minimize construction limits of project to reduce impact on site.

B. Toxic Chemicals: Avoid materials that can leach toxic chemicals into ground water. Do not allow toxic chemicals to enter sewers or storm drains or contaminate land or any body of water. Refer to NPS Project Sustainability Checklist for additional requirements.

C. Soil Erosion: Protect against erosion and topsoil depletion according to Stormwater Pollution Prevention Plan (SWPPP).

D. Habitats: Protect natural habitats and ecological systems on facility site as identified in Environmental Assessment (EA).

E. Noise: Minimize noise during construction. Operate power equipment according to local noise restrictions. Refer to Specification Section 01 57 19.12 – Noise and Acoustic Management for additional requirements.

F. Waste Management: Employ processes ensuring minimal waste output and in landfills.

Recycling is a requirement of this project. Specific recycling goals were established in NPS Project Sustainability Checklist. Legally dispose materials unsuitable for recycling at public or private dumping areas outside the Park.

COMPLETE STAMPED AND SIGNED

DB CONSTRUCTION DOCUMENTS (CD)

FILE FORMATS

DB Construction Drawings PDF, CAD/BIM, 3-Hard Copies

Divisions 2 through 49 Construction Specifications PDF, MS Word, 3-Hard Copies

Product File PDF, 3-Hard Copies Statement of Structural Tests and Special Inspections PDF , MS Word, 3-Hard

Copies Supplemental Design Reports PDF, 3-Hard Copies Design Calculations PDF, 3-Hard Copies Checklists for internal review of drawings, specifications, calculations, and cost estimates

PDF & MS Excel, 3- Hard Copies

NPS Review form with responses to 100% Complete DB CD review comments

PDF & MS Excel, 3- Hard Copies https://www.nps.gov/dscw/loader.cfm?csModule=security/getfile&pageid=387018 https://www.nps.gov/dscw/loader.cfm?csModule=security/getfile&pageid=387018

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DB Contractor shall designate an on-site party (or parties) responsible for instructing workers and overseeing environmental and sustainability requirements of this project. Distribute copies of environmental and sustainability requirements to Job Site Foreman and each Subcontractor.

Waste Management Plan Prior to scheduled Preconstruction meeting, DB Contractor shall submit draft Waste Management Plan to CO for approval. Develop and implement according to ASTM E1609 and Specification Section 0 74 19 – Construction Waste Management Disposal.

Minimize Construction Impacts:

Implement following mitigation measures to minimize impacts of construction activities:

Soil Erosion: Protect against erosion and topsoil depletion. DB Contractors shall implement and follow the provisions of an approved SWPPP.

Exotic Vegetation and Noxious Weeds: Prevent introduction and minimize spread of exotic vegetation and noxious weeds. Incorporate following procedures:

A. Obtain fill, riprap, or additional topsoil as specified in 31 23 00.00 20 – Excavation and Fill, 31 37 00 – Riprap, and 32 52 00 – Soil, Seed, and Sod, respectively.

B. Use approved native seed and/or plants and revegetate areas disturbed by construction.

Revegetation Plan: Required for this project. For revegetation efforts, use approved native species per plant list provided in Schematic Design Documents and/or native seed and incorporate Park policies regarding vegetation and site restoration.. Policy related to revegetation will be referenced in NPS Management Policies 2006 (Section 9.1.3.2).

Special Status Species: To protect unknown or undiscovered threatened, endangered, or special status species, construction contract will include provisions for these discoveries. DB Contractor should contact Park for direction to evaluate special species at the site.

Visitor Experience: Incorporate following mitigation measures into action alternatives to minimize impacts of construction activities on visitor experience:

Maintain walkways or provide alternative routes to allow passage around the Tidal Basin.

Air and Water Pollution Control: Air quality impacts are expected to be temporary and localized. To minimize these impacts, take following actions:

A. To reduce tailpipe emissions, do not leave construction equipment idling longer than necessary for safety and mechanical reasons.

B. To reduce construction dust, apply water to problem areas. Limit equipment to fenced project area to minimize soil disturbance and dust generation.

C. Take necessary reasonable measures to reduce air and water pollution with material or equipment used during construction. Keep volatile wastes in covered containers.

https://www.nps.gov/policy/mp/policies.html

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D. Storm Water Pollution Prevention Plan (SWPPP): Submit a SWPPP, according to applicable State Water Resources Control Board's (SWRCB) requirements, to CO for approval. Before starting construction, DB Contractor shall implement approved SWPPP.

2.3.2 Schedule of Values

The DB Contractor will be required to fully develop a Schedule of Values and submit as specified in Specification Section 01 32 16 – Construction Schedule.

2.3.3 Construction Support

Staging Areas Designated staging areas are depicted on the Construction Staging Plans. Staging areas shall be for the exclusive use by the contractor for the construction of the contracted scope. Locations of trailer(s), dumpsters, fencing, access gates, parking areas, etc. shall be the responsibility of the contractor. The contractor is responsible for securing, managing, and maintaining staging and construction areas. This includes all required trash and debris removal, pest management, signage, and notifications. Refer to Specification Section 01 50 00 – Temporary Facilities and Controls for specific requirements regarding Pest Control.

Structures: Trailers, Storage, Field Offices, Staging Area and Sheds: Sheds are not to be used for chemical nor waste storage. Prior to use, receive approval from Safety Department. CO to approve location.

DB Contractor's Field Office: Structurally sound construction and weather tight, and outlined in the Specification Section 01 50 00 – Temporary Facilities and Controls. Location to be coordinated between the DB Contractor and NPS before issuing Start Work Notice.

Access to Utilities

A. Water Service – There is an existing source of water nearby the Staging Area, as shown on the drawings. The Contractor will coordinate with the NPS and local utility company in order to determine if it is a feasible source of water. There will be no sub-metering of the water for use of the utility.

B. Electrical Service – There is an existing electrical service nearby the Staging Area, as shown on the drawings. The Contractor will coordinate with the NPS and local utility company in order to determine if it is a feasible source of power. The source will be sub-metered for use of the utility.

Storage Sheds: If used, provide weather tight sheds or other covered facilities for materials subject to weather damage and remove temporary water, sewer, sanitary facilities and electric utilities upon project completion. Sheds are not to be used for chemical nor waste storage.

Remove temporary utility connections. Prior to use, receive approval from Safety Department.

Construction Camp Establishment of a construction camp will not be permitted.

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Construction Zones Before construction activity, use construction barrier, plastic, or portable fencing, as defined in the Specification Section 01 50 00 – Temporary Facilities and Controls and approved by CO, to define construction zone, minimum area required for construction. Clearly state protection measures in construction specifications and instruct workers to avoid conducting activities beyond construction zone.

Protection of Public Use fence, barricade, or other means to block immediate work area and prevent unauthorized entry. Erect and maintain fencing, barricades, lights, signals, and warning signs according to the specifications.

Special Construction Requirements DB Contractor shall protect tree trunks and root systems of trees in, or adjacent to, work areas.

For all trees not designated for clearing/grubbing. That is, protect all trees designated for protection within the work zone in place.

The DB contractor will be allowed to work during special events; however, access and parking may be limited. Contractor to coordinate with the NPS, including reviewing the NPS Calendar of Events website (https://www.nps.gov/nama/planyourvisit/calendar.htm) to identify, and prepare for the various events occurring throughout the year. The DB Contractor’s schedule shall incorporate work impacts due to special event impacts.

Refer to Construction Access Plans, sheets G23.0 and G24.0 in the drawing package for routing of construction vehicles through Tidal Basin and West Potomac Park construction areas.

Parking of Construction Vehicles Limit to within approved staging area(s).

2.3.4 Submittals During Construction

The DB Contractor will be required to provide submittals as specified in Specification Section 01 33 23 – Submittal Procedures.

2.3.5 Construction Coordination Notification

CO provides necessary written notification and/or direction to DB Contractor. An on-site independent Construction Management Representative (CMR) coordinates DB Contractor’s construction efforts with Park Staff’s daily operations and transmits/receives correspondence between DSC and DB Contractor. CMR does not have authority to accept or reject work, authorize changes to contract terms and conditions, or obligate NPS for time or money.

2.3.6 Digital Images

Provide a minimum of twenty-five (25) existing condition images and a minimum of twenty-five

(25) images per week documenting construction for each area (TB-E, TB-W, WPP-S and WPP- N) after work has started in an area. Upload digital images to NPS DSC Project website and identify sets of images with date, location, title, description, and other information pertinent to subject captured in photos.

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Capture digital images documenting construction progress and problems. Post digital images of each work activity weekly or as directed by CO to help facilitate confirmation of completed work.

Digital images completely documenting the completed work areas after the final punch list (project acceptance) shall also be provided. Provide a minimum of twenty-five (25) completed project images which document the extents of the projects. Utilize the Digital Photo Log (link) located on the DSC Workflows website.

2.3.7 Structural Serviceability

Structural Serviceability: as described herein, BDR Section 4 Basis of Design.

General DB Contractor is responsible for quality of work. An independent testing laboratory is responsible for testing and those services shall be paid for by the DB Contractor. Inspect and test work as needed to ensure quality of materials, workmanship, construction, and finish, and to ensure functional performance is in compliance with applicable specifications and drawings.

DB Contractor accepts ultimate responsibility, liability, and duty to control quality of services provided to the Government as stipulated in FAR Part 36.609-2. DB Contractor shall be responsible for professional quality, technical accuracy, and coordination of designs, drawings, specifications, and other services furnished by DB Contractor, their Employees, Agents, Assignees, and Subcontractors under the contract. DB Contractor shall, without additional compensation, correct or revise any errors or deficiencies in its designs, drawings, specifications, and other services.

Refer to Specification Section 01 40 00 – Quality Requirements for full listing of DB Contractor responsibilities.

Use Accessibility Inspection Report (Contractor Quality Control (CQC) & Final) to document compliance with Architectural Barriers Act (ABA) Accessibility Standards. As needed, inspect at various stages of construction ensuring finished product meets guidelines. Complete applicable sections of Accessibility Inspection Report and attach to CMR & CQC Daily Report (Construction Management Representative (CMR) & Contractor Quality Control (CQC)) form (download and complete using Adobe Acrobat).

2.3.8 Working Hour Restrictions

There are no limitations to work hours; however, deliveries to portions of the Tidal Basin-East are limited to weekday hours of 6:00 AM to 10:00 AM unless otherwise approved by CO. No work shall occur on National Park Service (NPS) holidays without prior approval.

2.3.9 Temporary Services

Temporary materials may be new or used but must be adequate in capacity for required usage, must not create unsafe conditions, and must not violate requirements of applicable codes and standards.

https://www.nps.gov/dscw/upload/DigitalPhotoLog_8-24-06.doc https://www.nps.gov/dscw/loader.cfm?csModule=security/getfile&pageid=6109253 https://www.nps.gov/dscw/loader.cfm?csModule=security/getfile&pageid=362820

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Daily Walkthroughs: Daily walk throughs of the site to eliminate slip, trip, and fall hazards;

electrical concerns; storage concerns; and general housekeeping are required and must be documented.

Fire Protection Equipment: Observe and enforce standards of fire prevention. No open fires allowed. Fire extinguishers onsite must have annual certification and monthly inspections. Must have a rating of 2-A:10-B:C and be in good condition. Fire extinguishers must be stored free of blockage, on an approved fire extinguisher stand or bracket. Fire extinguishers cannot be stored on the floor/ground. Personnel onsite must show training on how to operate a fire extinguisher.

All hot work must have a general hot work permit from the Safety Department and an individual permit for each operation. Fire hydrants must have clear access and not be blocked by fencing, equipment, vehicles, or construction material.

Vehicles and Equipment: Provide one fire extinguisher on each vehicle or piece of equipment.

Extinguishers shall have a minimum UL (Underwriters Laboratory) rating of 2-A:10-B:C. A capable and qualified person shall be placed in charge of fire protection. Responsibilities shall include locating and maintaining fire protective equipment and establishing and maintaining safe torch cutting and welding procedures.

Hazard Control: Take necessary precautions to prevent fire during construction. Do not store flammable or combustible liquids in existing structures. Provide adequate ventilation during use of volatile or noxious substances.

Spark Arresters: Equip gasoline or diesel powered equipment, used in potential forest or grass fire locations, with spark arresters approved by U. S. Forest Service. CO will issue written determinations of areas and periods of potential fire hazard. Locate internal combustion equipment so exhausts discharge well away from combustible materials. Locate service areas a minimum of 50 feet from buildings. Shut down equipment before refueling.

Smoking, Tobacco, Vaping, and Marijuana Use: Smoking, vaping, and/or chewing of tobacco/ marijuana are prohibited inside buildings and onsite.

Welding: Cutting by torch or welding shall be performed only when adequate fire protection is provided. Hot work permits are required for all hot work through the NAMA safety department and individual hot work permits for the operation are required.

Electricity and Lighting: There is an existing electrical service nearby the Staging Area, as shown on the drawings. The Contractor will coordinate with the NPS and local utility company in order to determine if it is a feasible source of power. The source will be sub-metered for use of the utility.

Lighting levels for the constructions must be within the limits stated in OSHA 1926.56.

Electrical Cords: All outdoor electrical shall be rated for outdoor use. Daisy changing of electrical lines is not allowed. Extension cords cannot be used for permanent wiring, ground plug cannot be removed, must be inspected daily, cannot be repaired/show overload, damage, and

02-03-2023 | Page 19 of 31 must be stored after use properly. Power distribution box (GFCI) rated for use outdoors are permitted for use. Lock out tag out (LOTO) procedures must be followed and included in the Safety Plan.

Water: There is an existing source of water nearby the Staging Area, as shown on the drawings.

The Contractor will coordinate with the NPS and local utility company in order to determine if it is a feasible source of water. There will be no sub-metering of the water for use of the utility.

Sanitary Facilities: Provide and maintain temporary toilet facilities according to State Health Department and NPS regulations. Provide separate accessible facilities for men and women with privacy locks. Enclosures shall be weatherproof, sight proof, and of sturdy construction.

Completely remove sanitary facilities on completion of work. Sanitary handwashing facilities are required and must be maintained daily.

2.3.10 Access

The DB contractor will be allowed to work during special events; however, access and parking may be limited. Contractor to coordinate with the NPS, including reviewing the NPS Calendar of Events website (https://www.nps.gov/nama/planyourvisit/calendar.htm) to identify, and prepare for the various events occurring throughout the year. The DB Contractor’s schedule shall incorporate work impacts due to special event impacts.

Coordinate construction efforts with CO towards minimal impact to the work of NPS personnel and to the visiting public.

During construction of scheduled facilities, DB Contractor shall have continuous access to the site.

2.3.11 Preservation of Adjacent Features

Confine operations to work limits of project. Prevent damage to natural surroundings. Restore damaged areas outside work limits, repair or replace damaged trees and plants, at no additional expense to NPS.

Provide temporary barriers to protect existing trees, plants, and root zones that will remain in place. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with CO and remove roots and branches interfering with construction. To prevent damage, carefully supervise excavation, grading, backfilling, and other construction operations near trees and plants.

Provide temporary barriers for protection to adjacent cultural resources, including the Japanese Lantern on Tidal Basin West and the First Air Mail Marker on West Potomac Park South.

2.3.12 Existing Utilities

Minimize service disruptions. DB Construction Contractor shall coordinate with local utility companies. Arrange disruptions at least 1 week (7 calendar days) in advance with NPS and get approval from CO.

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Construction procedures shall include preventing accidental disruptions to facilities outside project limits by investigating existing utilities and protection during construction. Accidental disruptions shall be remedied at no cost to NPS.

2.3.13 Hauling Restrictions

Comply with legal and local load restrictions.

2.3.14 Accident Prevention

Accident Prevention Program: Refer to Specification Section 01 35 23 – Safety Requirements for specific requirements and submittals regarding the Accident Prevention Program.

2.3.15 Temporary Controls

Weather Protection: When inclement weather is expected, provide temporary protection for areas where elements have been removed or have not been re-installed.

Hurricane season begins June 1 and terminates November 30. If hurricane threatens area, coordinate with the NPS and secure and close construction work areas within the Park at least 24 hours before anticipated storm landfall. An approved Hurricane Preparedness and activation plan will be required to be developed and submitted by the DB Contractor and approved by the CO prior to beginning any field construction work.

2.3.16 Field Engineering

DB Construction Contractor shall set initial construction stakes establishing lines, slopes, grades, reference points, base lines and bench marks, as required. DB Contractor shall execute work according to these stakes and perform additional staking necessary.

Preserve existing survey control used for this project. Controls destroyed by DB Construction Contractor shall be replaced at their expense. Any re-staking required for the project due to disturbance of original staking/controls will be at the Contractor’s expense.

2.3.17 Project Close-out

The DB Contractor will be required to follow Project Close-out procedures as specified in Specification Section 01 77 00 – Closeout Procedures.

2.3.18 Substantial Completion and Final Inspection

The DB Contractor will be required to follow Substantial Completion and Final Inspection procedures as specified in Specification Section 01 77 00 – Closeout Procedures.

2.3.19 Sample & Template

A. Project Waste Management Plan Worksheet Sample - included with Division 1 Specifications

B. Submittal List with Review Estimate Template - included with Division 1 Specifications

2.3.20 Storm Preparedness & Response Plan

Submit written Storm Preparedness and Response Plan for all equipment in the event of a severe climatic event. Natural disasters and weather events which may affect the site include but are not

02-03-2023 | Page 21 of 31 limited to earthquakes, floods, extreme heat, hurricanes, lightening safety, tornados, and winter weather. The Natural Hazard Checklist and applicable hazard considerations for this site and outlined scope of work are provided in the supplied report “Climate Change and Natural Hazards” dated August, 2022. The Plan shall be inclusive of all contractors and subcontractors onsite.

At a minimum, the Storm Preparedness and Response Plan shall include:

A. Monitoring Protocol B. Threshold criteria for hazard-based orders:

1. Water level elevation triggers

2. Forecasted weather events (hurricanes, blizzard, etc.)

3. Acute weather events (lightning storms, heavy downpour, etc.)

a. Pre-Event Planning:

i. Identification of emergency response team, roles & responsibilities.

ii. Communication responsibilities.

iii. List of actions to be taken under various climatic triggers and responsible parties.

◦ Securing of equipment (land-based & floating)

◦ Removal of near water equipment and any identified temporary storage areas

◦ Ceasing of construction operations (such as, but not limited to, pile installation, dewatering, etc.)

◦ Evacuation plan

b. Post-Event Recovery:

i. Identification of critical operations required to resume construction.

ii. Systems restart procedures.

iii. Personal and equipment recall/reactivation instructions.

2.4 COMPLIANCE AND PERMITTING REQUIREMENTS

2.4.1 Compliance

The Environmental Assessment is underway and will be completed by the time of Contract award. Compliance with Section 106 of the National Historic Preservation Act, National Capital Planning Commission and US Commission of Fine Arts is also underway and anticipated to be completed by the time of Contract award. Compliance with Section 7 of the Endangered Species Act is underway and continued consultation will be required prior to construction.

The Design Build Contractor is responsible for surveying the project area to confirm the presence or absence of submerged aquatic vegetation (SAV) prior to construction.

2.4.2 Regulatory Permitting

The Design Build Contractor is responsible for Scoping, Planning, and Acquisition of all the permits required to build and operate the project with the exception of those listed in the table under column NPS/JV in Basis of Design Report, Section 2.1, which are anticipated to be completed by the time of award. The Contractor will work collaboratively with the integrated design team (DSC and the Park) to ensure that the project meets all DOI, NPS, and Park requirements.

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Should the Design Build Contractor elect to modify permits or other approvals already obtained by NPS, the Design Build Contractor shall be responsible for preparing all exhibits and documentation necessary to support any modification request, and shall be responsible for any associated costs and schedule implications.

Permit Scoping:

a. Review permit scoping completed to date;

b. The DB Contractor shall make a determination and identify which permits are required based on documents provided by NPS. The table in the Basis of Design Report, Section

2.1 includes permits and approvals that the NPS/JV Team has negotiated, along with those that will be the responsibility of the DB Contractor. Note that the table is not all inclusive. Depending on the DB Contractor’s construction means and methods, additional permits or approvals may be required;

c. In case there is insufficient information to make a definitive determination for a particular permit, the DB Contractor shall communicate to the CO what information is required to make that determination, along with the steps necessary to obtain this information, upon which the CO will provide direction; and

d. The DB Contractor shall provide a list of all appropriate permits (Permit List) for NPS to review within 60 days of contract award/notice to proceed.

3.0 PERFORMANCE REQUIREMENTS

3.1 DESIGN IMPERATIVES

Use in all stages of design and construction processes:

1. Appropriate Design Solutions for Park Use and Maintenance Capabilities o see definition on DSC Workflows Definitions A page

2. Compliance Consistency Reviews o see definition on DSC Workflows Definitions C page

3. Constructability Strategies o see definition on DSC Workflows Definitions C page

4. Integration of Facilities into the Park Environment (Management Policies 2006)

5. Quality Control o see definition on DSC Workflows Definitions Q page

6. Risk Analysis o see definition on DSC Workflows Definitions R page

7. Scope and Budget Consistency Reviews o see definition on DSC Workflows Definitions S page

8. Sustainable Design Practices o see definition on DSC Workflows Definitions S page

9. Universal Design Principles o see definition on DSC Workflows Definitions U page

10. Value-Based Decision-Making Methodology o see definition on DSC Workflows Definitions V page https://www.nps.gov/dscw/definitionsdc_a.htm https://www.nps.gov/dscw/definitionsdc_c.htm https://www.nps.gov/dscw/definitionsdc_c.htm https://www.nps.gov/policy/mp/policies.html#_Toc157232993 https://www.nps.gov/dscw/definitionsdc_q.htm https://www.nps.gov/dscw/definitionsdc_r.htm https://www.nps.gov/dscw/definitionsdc_s.htm https://www.nps.gov/dscw/definitionsdc_s.htm https://www.nps.gov/dscw/definitionsdc_u.htm https://www.nps.gov/dscw/definitionsdc_v.htm

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3.2 SUSTAINABILITY

Sustainability requirements for NPS projects are included in a variety of documents - Federally legislated requirements, Executive Orders (EOs), and Department of Interior (DOI) and NPS policies. NPS Project Sustainability Checklist template is used to identify project specific sustainability requirements and document continued compliance with those requirements.