01_NAMA_318722_DB-RFP_12092022_1.pdf

DRAFT

NATIONAL MALL AND MEMORIAL PARKS

WASHINGTON, DC

SOLICITATION 1443N########

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

DB DESIGN DEVELOPMENT (DD) DOCUMENTS:

100% DRAFT DB CONSTRUCTION DOCUMENTS (CD):

100% COMPLETE DB CONSTRUCTION DOCUMENTS (CD):

COMPLETE STAMPED AND SIGNED DB CONSTRUCTION DOCUMENTS (CD):

CONSTRUCTION:

AS-CONSTRUCTED DRAWINGS:

1.7 NPS CONTACTS & ADDRESS:

1.8 DATA AND MATERIALS PROVIDED BY NPS

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

2.3.20 STORM PREPAREDNESS & RESPONSE PLAN

3.0 PERFORMANCE REQUIREMENTS

3.1 DESIGN IMPERATIVES

3.2 SUSTAINABILITY

3.3 FACILITY PERFORMANCE

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3.4 ELEMENTS AND PRODUCTS

4.0 TECHNICAL REQUIREMENTS

4.1 D.C. 0 FIXED DESIGN CRITERIA

4.1.1 SECTION INCLUDES

4.1.2 RELATED REQUIREMENTS

4.1.3 DEFINITIONS

4.1.4 BASIC FUNCTION

4.1.5 FIELD CONDITIONS

4.1.6 STRUCTURAL CRITERIA

4.1.7 DURABILITY CRITERIA

4.2 DC A - SUBSTRUCTURE CRITERIA

4.2.1 SECTION INCLUDES

4.2.2 RELATED REQUIREMENTS

4.2.3 METHODS OF CONSTRUCTION

4.2.4 FOUNDATIONS

4.2.5 EXCAVATION RETAINING WALLS

4.2.6 BASIC FUNCTION

4.2.7 STRUCTURAL CRITERIA

4.2.8 DURABILITY CRITERIA

4.3 DC B1 - SUPERSTRUCTURE CRITERIA

4.3.1 SECTION INCLUDES

4.3.2 RELATED REQUIREMENTS

4.3.3 SUPERSTRUCTURE

4.3.4 BASIC FUNCTION

4.3.5 STRUCTURAL CRITERIA

4.3.6 DURABILITY CRITERIA

4.4 DC G - SITE CRITERIA

4.4.1 SECTION INCLUDES

4.4.2 RELATED REQUIREMENTS

4.4.3 FIELD CONDITIONS

4.4.4 TEMPORARY EROSION AND SEDIMENTATION BMPS

4.4.6 EROSION AND SEDIMENTATION CONTROLS

4.4.7 SITE CLEARING

4.4.8 SITE DEMOLITION AND RELOCATIONS

4.4.9 ABOVE GROUND SITE DEMOLITION AND PROTECTION OF FEATURES

4.4.10 UNDERGROUND SITE DEMOLITION

4.4.11 HAZARDOUS WASTE REMEDIATION

4.4.12 SITE EARTHWORK

4.4.13 FILL AND BORROW

4.4.14 BASIC FUNCTION

4.4.15 HEALTH AND SAFETY CRITERIA

4.4.16 STRUCTURAL CRITERIA

4.4.17 DURABILITY CRITERIA

4.4.18 OPERATION AND MAINTENANCE CRITERIA

4.5 DC G1 - SITE IMPROVEMENTS CRITERIA

4.5.1 SECTION INCLUDES

4.5.2 RELATED REQUIREMENTS

4.5.3 EXTERIOR SITE SIGNAGE

4.5.4 EXTERIOR FURNISHINGS

4.5.5 BASIC FUNCTION

4.5.6 HEALTH AND SAFETY CRITERIA

4.5.7 STRUCTURAL CRITERIA

5.0 ATTACHMENTS

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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 (A/E) 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 Technical content Submission format

2. 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:

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

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

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

D. 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:

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

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

1.4 BACKGROUND

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 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.

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.

In the years since their construction, the seawalls have significantly settled and been compromised, leading to overtopping in some sections twice daily during normal tidal conditions, which does not dissipate in a timely manner because of poor drainage. 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. When water covers the sidewalk areas, it makes those pathways inaccessible as well. The failing seawalls, standing water, and debris are concerns for visitor safety. 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.

Greater areas are overtopped after extreme weather events, threatening historical resources and park infrastructure. The deteriorated sidewalks around the Tidal Basin seawall, on either side of the inlet bridge, create a hazardous condition for park visitors. Because of the abovementioned settlement and subsequent decrease in elevation above mean water level, none of the overtopped areas drain effectively or quickly. When the water does recede, the overtopped areas are often littered with large wood debris and other trash from the river. Along the Potomac River seawalls, debris often collides with and damages the seawalls and accelerates failures. Much of the debris is human-made and is a sanitation and health safety concern for the Park’s visitors and

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NPS employees. Significant cost is expended by NPS staff to remove the debris load after overtopping events.

The mortar between the blocks of stone masonry in West Potomac Park has eroded completely in some areas, 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.

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 storms of greater intensity 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 stage 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 BDR Section 1.

1.5 DESCRIPTION

The 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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Figure 1 – Preferred Seawall Solution

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

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

The DB Contractor cannot change or eliminate the following requirements:

Top of proposed seawall elevations Proposed wall alignment Installation of the rehabilitated wall along the historic wall alignments Salvage and re-use of existing stone Relieving platform concept; must not impose additional loads on subsurface soils behind seawall

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

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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 RFP according to the following schedule:

DB Design Development (DD) Documents:

Submit DB Design Development Documents no later than 261 calendar days after award.

NPS Reviewers will complete submittal reviews no later than 20 calendar days after DB Contractor submits DB Design Development Documents.

100% Draft DB Construction Documents (CD):

Continue work on 100% Draft DB Construction Documents during DB Design Development Documents review. After receiving DB Design Development review comments, address and incorporate comments in 100% Draft DB Construction Documents.

Submit 100% Draft DB Construction Documents and responses to NPS Review form with responses to DB Design Development Documents no later than 95 calendar days after submitting DB Design Development Documents.

Complete NPS Review no later than 20 calendar days after receiving 100% Draft DB Construction Documents.

100% Complete DB Construction Documents (CD):

Submit 100% Complete DB Construction Documents and NPS Review form with responses to 100% Draft DB Construction Documents review comments no later than 84 calendar days after submitting 100% Draft DB Construction Documents.

Complete NPS review no later than 20 calendar days after receiving 100% Complete DB Construction Documents.

Complete Stamped and Signed DB Construction Documents (CD):

Submit Complete Stamped and Signed DB Construction Documents and NPS Review form with responses to 100% Complete DB Construction Documents review comments no later than 21 calendar days after receiving NPS review comments.

Construction:

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Construction begins when CO issues DB Start Work Notice.

Complete construction of the following work areas no later than 157 calendar days after award of contract.

Tidal Basin East (TB-E) Tidal Basin West (TB-W)

Complete construction of the following work areas no later than 1012 calendar days after award of contract.

West Potomac Park - South (WPP-S) West Potomac Park - North (WPP-N)

Reference Specification Section 01 11 00 Summary of Work, Section 1.3 Work Sequencing Criteria for additional requirements regarding specific work area completion dates requirements (milestone completions) not described above.

As-Constructed Drawings:

Complete As-Constructed Drawings no later than 91 calendar days after Substantial Completion within each the Tidal Basin 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): Name, Phone Number, and E-mail Address Alternate Contracting Officer’s Representative (COR): Name, Phone Number, and E-mail Address

Address:

National Park Service – Denver Service Center 12795 West Alameda Parkway Post Office Box 25287 Denver, Colorado 80225

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1.8 DATA AND MATERIALS PROVIDED BY NPS

NPS provides to the DB Contractor the following data and materials, copies of which are attached and incorporated by reference into this RFP as provided in Section 5 – Attachments.

A. ATT A – Project Program B. ATT B – Basis of Design Report (BDR) C. ATT C – Approved Schematic Design Preferred Alternative Documents D. ATT D – Project Specifications E. ATT E – Contract Price Schedule F. ATT F – Geotechnical

i. West Potomac Park: Geotechnical Data Report (GDR)

ii. Tidal Basin: Geotechnical Data Report (GDR)

G. ATT G – Constructability Checklist H. ATT H – NPS Sustainability Checklist

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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:

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.

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

B. Review site data.

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

D. Perform geotechnical design including supplemental investigations and testing.

A. 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.

B. Complete the design of seawall improvements.

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

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

E. Provide schedule of construction work.

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

G. Install and maintain temporary construction elements (fencing, staging areas, piers, landing areas, cofferdams, etc.)

H. Construct seawall improvements.

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

J. Provide as-constructed drawings.

2.1.2 Definition of Contract Line Items

The information provided below is general in nature. 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.

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CLIN 5 is specific to the seawall area designated as WPP-N beginning at Station WPP 3024+38.46 and progressing north. The DB Contractor shall indicate a proposed ending wall station to define the length and limits of rehabilitated wall to be constructed for a Lump Sum value equal to, or less than, the maximum available project funds ($109,993,000), inclusive of CLINS 1 through 5.

If the D-B Contractor can complete the entire project (to the ending wall alignment station designated as WPP 3046+72 indicated in the plan set) for the maximum available project funds, a proposed ending Station of 3046+72 shall be indicated in CLIN 5.

If the DB Contractor cannot complete the entire project within CLIN 5 for the maximum available project funds, then CLIN 6 stationing and Lump Sum pricing shall be proposed by the contractor. CLIN 6, Option A is specific to the seawall area designated as WPP-N beginning at the proposed ending wall station noted by the DB Contractor in CLIN 5 and progressing north to the ending wall alignment station designated at WPP 3046+72 indicated in the plan set. This CLIN shall be priced by the DB Contractor to present a best value Lump Sum proposal to complete the remainder of the seawall section in WPP-N.

More specific information regarding the Contract Line Items can be found in Specification Section 01 27 00 – Definition of Contract Line Items AND in the Contract Price Schedule – Design-Build in Section 5 - Attachments of the DB RFP.

2.1.3 Progress Payments

Following award of the Contract, the DB Contractor will be required to generate and submit a detailed Schedule of Values which is separated into a work breakdown structure (major work items) which correspond to the major CLIN items listed in the RFP and the Contract Price Schedule – Design Build template attached in Section 5.

Progress payments will be made based on successful completed and accepted work items listed in the work breakdown structure.

The Schedule of Values will be due within 30 Calendar Days following the award of the Contract.

Design Phase - Progress payments will be based on submission, review, and acceptance of design deliverables.

Construction Phase - Progress payments will be based on percentage of work completed on items and values listed in the approved schedule of values. Actual construction completed and in place will form basis for payment. DB Contractor shall verify percent complete under direction of the CO Representative unless CO waives this requirement in a specific instance. DB Contractor shall make computations for payment based on Government’s verification of work completed and in place for periods which progress payments are requested.

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DB Contractor shall furnish to CO originals of field notes and other records relating to basis for payment. CO shall use as necessary to determine final amount of progress payments. DB Contractor shall retain copies of material furnished to CO.

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 for additional requirements not listed below.

Design Meeting After award of contract and acceptance of Performance and Payment bonds, the CO will arrange a meeting with DB Contractor. The meeting agenda shall include the following as a minimum:

A. Areas available for use by DB Contractor B. Access requirements of the Park C. Design schedule (See 2.1.5 Schedule) D. Environmental and sustainability requirements E. Natural and Cultural Resource Protection F. Payments to DB Contractor G. Review and emphasize Park needs and design objectives.

H. Modifications during design I. Schedule of Values J. Submittals during design

Preconstruction Meeting Submit following Part 2 Project Requirement deliverables a minimum of one week prior to Preconstruction Meeting:

A. Accident Prevention Program (APP) B. DB Contractor’s Commissioning Plan (CCP) C. Evidence of liability insurance coverage and workman’s compensation for DB Contractor and Subcontractors D. Historic Preservation Treatment Program E. Letter designating Project Superintendent F. List of required permits G. List of Subcontractors for project (same as proposal) H. Project Schedule with construction portion fully developed I. Quality Control Plan J. Schedule of Values K. Storm Water Pollution Prevention Plan (SWPPP) Submittal process L. Waste Management Plan (See Section 2.3) M. Storm Preparedness and Response Plan (See Section 2.3) N. Written statements from Subcontractors certifying compliance with applicable labor standard clauses.

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After 100% Complete DB Construction Documents are approved (or completed portions of DB Construction Documents necessary for fast tracking the project), and before start of construction, CO will arrange on-site Preconstruction meeting with DB Contractor. Meeting agenda will include the following as a minimum:

A. Accident reporting B. Construction schedule C. Correspondence procedures D. Jobsite safety E. Labor standards F. Lines of Authority G. Modifications H. NPS/DSC SharePoint Project website I. Park Rules and Regulations J. Payroll reports K. Progress payments L. Resolution to comments provided by NPS on the Part 2 Project Requirements M. Roles and responsibilities N. Schedule of Values O. Submittal process A. Archeological Resources Protection Requirements B. Environmental and sustainability requirements for the Project, required tracking for sustainability (related submittals), and use of NPS Project Sustainability Checklist.

C. Saturdays, Sundays, holidays and night work.

D. Traffic control.

Progress Meetings DB Contractor shall participate in weekly telephone conference calls with CO and other project team members with updates to following meeting agenda items:

A. Approval of minutes of previous meetings.

B. Modifications C. Review of off-site fabrication and delivery.

D. Requests for Information (RFI) and issues.

E. Schedule update. (Provide updated CPM (Critical Path Method) schedule prior to meeting.)

F. Status of Project Record Drawings and O&M (Operation & Maintenance) Manuals.

G. Submittal status.

H. Work in progress and projected one (1) month look ahead.

I. Other business relating to work.

2.1.5 Project Schedule

General: DB Contractor shall upload project schedule to NPS/DSC SharePoint Project website and provide two (2) color copies after award and before the design meeting. Schedule shall include detailed design phase with design deliverable submission dates, review periods, and summary construction schedule with important milestones included for both phases.

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Fully develop construction portion of project schedule and submit to CO on NPS/DSC SharePoint Project website before Preconstruction meeting or construction begins. Update project schedule monthly throughout contract period until project substantial completion. Status date of each schedule update shall be 10 days before progress payment request date.

Construction work cannot begin until Government approval is obtained for either:

A. Entire set of 100% Complete DB Construction Documents.

B. Fast track construction: 100% Complete DB Construction Documents affecting work to be constructed.

Purpose: Project schedule ensures adequate planning, coordinating, scheduling, and reporting of DB Contractor’s design and construction activities. Project schedule will assist DB Contractor and CO to monitor work progress, evaluate proposed changes, and process DB Contractor's monthly progress payment requests.

Software: Latest version of Microsoft Project, Primavera Project Planner, SureTrak, or approved equal.

Schedule Development: Project schedule shall cover entire contract period. Late finish date is same as contract’s established completion date.

The Project Schedule shall logically and directly relate to the order of the Contract Price Schedule (CLINs) and the Schedule of Values of which progress payments will be based.

DB Contractor shall use Critical Path Method (CPM) and limit the use, to the maximum extent possible, of lead or lag durations between schedule activities. DB Contractor's project schedule shall consist of procurement activities (including mobilization, submittal, and fabrication and delivery of key and long-lead procurement items) and construction activities.

DB Contractor's project schedule shall consist of, but not be limited to, the following for each activity:

A. Identify activities and numbers numerically (maximum 5-digit). Number activities in increments of 10.

B. Concisely describe work represented by activity (maximum 48 characters). Avoid using non-standard abbreviations.

C. Activity duration shall be in whole calendar days with maximum duration 21 calendar days each, unless otherwise approved by CO, except for non-construction activities including mobilization, shop drawing and sample submittals, fabrication of materials, delivery of materials and equipment, and concrete curing.

DB Contractor shall ensure project schedule includes own work and Subcontractor work.

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Project schedule shall show sequence and interdependence of activities required for complete performance of work and shall be cost and resource loaded. DB Contractor shall ensure work sequences are logical and project schedule shows a coordinated work plan. Proposed durations assigned to each activity shall be DB Contractor's best estimate of time required to complete activity, considering scope and resources planned. Resource loading of each activity shall list personnel by labor category and equipment type, and capacity proposed to complete activity in duration shown. Include permit requirements and constraints. Consider and include seasonal weather conditions in planning and scheduling of work influenced by high or low ambient temperatures and wind and/or precipitation, to ensure completion of work within contract time.

Project Schedule Updates

Monthly updates: Monthly updates of project schedule shall be an integral part and basic element of estimate upon which progress payments shall be made under this contract. If, in judgment of CO, DB Contractor fails or refuses to provide schedule of values and complete schedule update or revision as specified hereinafter, DB Contractor shall be deemed to have not provided required information upon which progress payment may be made and shall be subject to retainage of a portion of the payment.

Narrative: Include in report:

A. Brief description actual progress made during update period.

B. Actual and potential delaying activities.

C. Impediments to progress.

D. Issues related to inclement weather.

E. Progress toward established milestones.

F. Project float (total float for the project, not free float per activity or fragment).

G. Brief description of work anticipated to be performed in next month.

H. Identify minor revisions to schedule for evaluation and accepted or rejected.

As work progresses, indicate Actual Completion percentage for each activity. If schedule update shows late finish date after contract completion date, at a minimum, include the following in narrative with submission:

A. Known delays.

B. Actions taken to get back on schedule.

C. Pending modifications.

D. Impediments or constraints affecting progress.

Progress Payments: Update currently accepted construction schedule monthly. If DB Contractor fails to provide monthly updates or revisions to currently accepted construction schedule, a portion of monthly payment may be retained until updates/revisions are made.

Time Impact Analysis for Contract Modifications, Changes, Delays, and Contractor Requests Requirements: When contract modifications or changes are initiated, delays are experienced, or DB Contractor revises project schedule, DB Contractor shall submit to CO a written time impact analysis illustrating influence of each modification, change, delay, or DB Contractor’s request on the contract time.

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A. Time Extensions: Activity delays shall not automatically mean an extension of contract time is warranted or due to DB Contractor. It is possible that modification, change, or delay will not affect existing critical activities or cause non-critical activities to become critical. A modification, change, or delay may result in only absorbing a part of available total float that may exist within an activity chain of the project schedule, thereby not effecting the contract time. Time extensions will be granted according with terms of contract.

B. Float: Float is not for exclusive use or benefit for NPS or DB Contractor. Extension of contract time is granted only to extent the equitable time adjustments to activity or activities affected by modification, change, or delay exceeds total (positive or zero) float available on a particular activity.

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.

2. Divisions 2 through 49 Construction Specifications (Construction Specifications Institute

(CSI) MasterFormat 04 Edition). The DB team A/E 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. Hold points for testing, submittals, materials, etc. have been underlined and italicized within the specification template documents to indicate that no changes will be accepted for those portions of the specifications. Use AIA MasterSpec to generate new specifications.

3. Product File.

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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. A/E team to stamp and sign cover sheet.

COMPLETE STAMPED AND SIGNED

DB CONSTRUCTION DOCUMENTS (CD)

FILE FORMATS

DB Construction Drawings PDF & CAD/BIM Divisions 2 through 49 Construction Specifications PDF & Microsoft Word Product File PDF Statement of Structural Tests and Special Inspections PDF & Microsoft Word Supplemental Design Reports PDF Design Calculations PDF Checklists for internal review of drawings, specifications, calculations, and cost estimates

PDF & Microsoft Excel

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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.

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.

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 as required in contract documents. Plan shall include, but not be limited to:

A. List of recycling facilities, reuse facilities, municipal solid waste landfills, and other disposal area(s) to be used. Include name, location, and phone number.

B. List of proposed materials to be reused or recycled.

C. List of materials that cannot be recycled or reused with explanation or justification.

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

PDF & Microsoft Excel

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D. Storage and collection methods of waste and recyclables, handling procedures, and means of keeping recyclables free of contamination.

E. Describe means of transporting recyclable materials and estimate frequency of emptying bins.

F. Identity person or persons responsible for ensuring project recycling goals are achieved.

G. Revise and resubmit Plan per CO. Approval of DB Contractor’s Plan does not relieve DB

Contractor of complying with applicable environmental regulations.

Progress Documentation: Supplemental to Waste Management Plan, document solid waste disposal, diversion, and cost/revenue analysis, and submit completed worksheet monthly. See Project Waste Management Plan Worksheet Sample, included with Division 1 Specifications, and report totals to date for column headings.

Prior to commencement of work, schedule and conduct meeting with CO. Discuss proposed Waste Management Plan and develop mutual understanding of details of environmental protection.

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.

Vegetation Salvage and 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:

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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.

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. (See Specification Section 01 57 23 – Temporary Storm Water Pollution Prevention.) Before starting construction, DB Contractor shall implement approved

SWPPP.

Cultural Resources: An NPS Archeological Monitor will be present at work site. If archeological resources are discovered at project site while Archeological Monitor is absent, immediately stop work in vicinity of discovery and report discovery to CO.

2.3.2 Schedule of Values

After contract award and before Design Meeting, submit schedule of dollar value based on Contract Price Schedule. Breakdown each lump-sum item into component parts of design deliverables or construction work for which progress payments may be requested. Total costs for component parts of work shall equal contract line item amount for that lump-sum item. CO may request data to verify accuracy of dollar values. Include mobilization, general condition costs, overhead, and profit in total dollar value of unit price item and in component parts of work for each lump-sum item, as described below. Do not include mobilization, general condition costs, overhead, or profit as separate items.

Total cost of items shall equal contract sum. Schedule of Values will form basis for progress payments.

Before first progress payment is processed, DB Contractor and CO shall agree on an acceptable Schedule of Values. The project schedule shall fully incorporate the schedule of values and the schedule of values shall fully incorporate the project 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.

Structures: Trailers, Storage, Field Offices, Staging Area and Sheds: CO to approve location.

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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 determined by 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 and to identify the potential cost 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 and to identify the potential cost 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. Remove temporary utility connections.

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

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.

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.

Special Construction Requirements 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.

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Parking of Construction Vehicles Limit to existing roads in legally designated areas and within approved staging area(s).

2.3.4 Submittals During Construction

Construction Submittals: Contractor to complete the NPS Submittal List and Review Estimate Template as part of the DD and CD documents and identify for approval by the government, which submittals will be Action Submittals and which will be Informational Submittals.

Construction Submittal Types

Action Submittals: Written, graphic information, and physical samples that require Government’s responsive action.

A. Product Data: Collect information in single submittal for each element of construction and type of product or equipment.

B. Shop Drawings: Prepare project-specific information, drawn accurately to scale. Do not base Shop Drawings on reproductions of Contract Documents or standard printed data [unless submittal of CAD (Computer Aided Design)/BIM (Building Information Modeling) Drawings is otherwise permitted].

C. Samples: Submit Samples of kind, color, pattern, and texture for reviewing characteristics with other elements and comparing between submittal and actual component as delivered and installed.

D. Construction Materials: DB Contractor is encouraged to submit, for approval, products made of recycled or environmentally responsible material. NPS will make every effort to approve these materials.

Informational Submittals: Written information not requiring Government’s responsive action.

Submittals may be rejected for not complying with requirements.

A. Prepare and submit Informational Submittals required by individual Specification Sections.

B. Informational submittals include, but are not limited to, Coordination Drawings LEED™ Submittals Product Data, Certificates, Test reports, Manufacturer’s instructions, Division 01 Management Plans, etc.

Contractors Review

Review each submittal for coordination with other work of contract and compliance Contract Documents. Note corrections and field dimensions.

General Submittal Procedures

Prepare and submit submittals shown in Part 4.0 Technical Requirements. See individual technical sections for details on requirements for each.

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CO reserves the right to require submittals in addition to those identified in individual sections.

Coordination: Coordinate submittal preparation and processing with construction activity performance. Review for legibility, accuracy, completeness, and compliance with Contract Documents.

1. Coordinate each submittal with fabrication, purchasing,…