B08_Attch_07_NAMA_318722_NPS_Checklists_Amend0002_20230314_0002.pdf

NPS Constructability Checklist National Park Service (NPS) - Denver Service Center (DSC) | 12-09-22

For instructions, see Instructions tab below.

Date: 3-Feb-23 Project Title: Rehabilitate Seawalls and Shoreline Park: NAMA - National Mall and Memorial Parks Completed By: HDR|MNI JV Team

PMIS:

(Project Management Information System)

PMIS 318722

DBB or DB:

(Design-Bid-Build OR Design-Build)

Design-Build

Item Number Project Issues SD Comments Schematic Design

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

PROJECT INTRODUCTION

1 ANY NON-TYPICAL CONTRACT LINE ITEMS OR

MISCELLANEOUS CONTRACT CONCERNS Design-Build Design-Build

RECOMMENDED CONTRACT LENGTH; SEASONAL

BREAKS IN CONTRACT; IDENTIFY CONTRACT TIMING

ISSUES THAT NEED TO BE ADDRESSED; IDENTIFY

SPECIFIC PHASING REQUIREMENTS

Recommend 5 Year Contract, Minimize Time of Year Work Restrictions, Tidal Basin to be Complete by May 2026 and Must be Completed First.

Recommend 5 Year Contract, Minimize Time of Year Work Restrictions, Tidal Basin to be Complete by May 2026 and Must be Completed First.

NPS Constructability Checklist, 02-03-23 | page 1 of 7

Item Number Project Issues SD Comments Schematic Design

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

PERMITTING & COMPLIANCE

External Permit or Approval

LIST REQUIRED GOVERNMENT FURNISHED PERMITS

AND APPROVALS: List by Agency-Type: Example: USACE- CWA404 NWP18. Include contact, and phone number.

USACE - DOEE Joint Nationwide Permit, FAA Letter of No Hazard Determination, NPS Access Permits.

USACE - DOEE Joint Nationwide Permit, FAA Letter of No Hazard Determination

External Permit or Approval

LIST REQUIREMENTS FOR GOVERNMENT FURNISHED

PERMITS: Include inspections, meetings, close out requirements, and drawings.

Permit Applications, RFI Responses, Final Certification Letters.

Permit Applications, RFI Responses, Final Certification Letters.

External Permit or Approval

LIST REQUIRED CONSTRUCTION CONTRACTOR

FURNISHED PERMITS AND APPROVALS

All other building permits and approvals Included in Project Specifications.

Hot work permits, and any necessary approvals from US Coast Guard, FEMA, DOEE (expect 401 Certification), DCRA, DDOT, and DC Water).

Additional building permits and approvals included in Project Specifications. Final list of permits and obtaining the permits is DB RFP contractor's responsibility.

External Permit or Approval

DESCRIBE WHERE AND HOW PERMIT REQUIREMENTS

ARE INCLUDED IN DESIGN PACKAGE: For each permit, describe requirement, specification (section and paragraph) and/or drawing number.

Permit Conditions will be Listed in Permits and Specifications.

Permit Conditions will be Listed in Permits and Specifications.

Internal Compliance

IDENTIFY COMPLIANCE REQUIREMENTS:

SHPO, NEPA, EA: List requirement, status, and date or expected date.

Compliance Requirements TBD and Obtained by DB Contractor.

Compliance work to be completed by Government. Requirements TBD.

Internal Compliance

COMPLETE ALL APPROVALS: Director's, DAB, Congressional Funding issues, estimate within available funds? Adequate time to complete work within project and funding constraints?

To be Completed by DSC, NAMA, or Region. To be Completed by DSC, NAMA, or Region.

General

IDENTIFY REQUIRED SPECIAL INSPECTIONS: List inspecting or approving organization and reason required. TBD TBD

NPS Constructability Checklist, 02-03-23 | page 2 of 7

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

STAGING AND MOBILIZATION

IDENTIFY AREAS FOR STAGING INCLUDING AREAS FOR

PRIME, SUBS, MATERIAL, AND PARKING; IDENTIFY

AREAS FOR CONSTRUCTION CAMP IF APPLICABLE:

List drawing number(s) showing staging area(s).

TB-E: Construction Staging Plan - Sht. 27;

TB-W: Construction Staging Plan - Sht. 70;

WPP: Construction S+C26taging Plan - Shts.

120-121;

TB-E: Construction Staging Plan;

TB-W: Construction Staging Plan;

WPP: Construction Staging Plan;

IDENTIFY TEMPORARY UTILITIES AVAILABLE FOR

CONSTRUCTION: List drawing number or specification section that identifies available utilities-electrical, phone, non-potable and potable water, sanitary-provider, meter needed, and responsible cost party.

No utilities will be provided for DB-Contractor Utilities are available (power, water) from FDR monument area. See Specifications.

IDENTIFY CONSTRUCTION LOGISTICS: List drawing numbers that show traffic control, access restrictions, work hour restrictions, bridges, features, other.

Project Contractor Access Plan: Sheet 18;

TB-E: Traffic Plan - Sht. 27, Construction Staging Plan - Sht. 27; Pedestrian Traffic Signage & Flow Plan - Sht. 28

TB-W: Traffic Plan - Sht. 69, Construction Staging Plan - Sht. 70; Pedestrian Traffic Signage & Flow Plan - Sht. 71

WPP: Traffic Plan - Shts. 118-119, Construction Staging Plan - Shts. 120-121; Pedestrian Traffic Signage & Flow Plan - Shts. 122-123

Project Contractor Access Plan;

TB-E: Traffic Plan, Construction Staging Plan;

Pedestrian Traffic Signage & Flow Plan.

TB-W: Traffic Plan, Construction Staging Plan;

Pedestrian Traffic Signage & Flow Plan.

WPP: Traffic Plan, Construction Staging Plan;

Pedestrian Traffic Signage & Flow Plan.

IDENTIFY IMPACTS TO PARK AND VISITOR

OPERATIONS: List drawing number(s) or specification section(s) that identifies impacts (e.g. Visitor Impacts, Neighborhood-Urban Impacts, Detours, Closures).

Visitors will not be permitted within fenced working areas. Sidewalks will kept open to the extent possible, roadways will remain open except during deliveries and equipment movement, which will be controlled with flagmen.

Visitors will not be permitted within fenced working areas. Sidewalks will kept open to the extent possible, roadways will remain open except during deliveries and equipment movement, which will be controlled with flagmen.

IDENTIFY SITE ACCESS ISSUES: List drawing number(s) or specification section(s) that identify issues (e.g. remote and road type constrained sites, weather closure restrictions, road and bridge load limits, road and tunnel height restrictions, crane and helicopter requirements).

Project Contractor Access Plan: Sheet 18;

TB-E: Traffic Plan - Sht. 27; Pedestrian Traffic Signage & Flow Plan - Sht. 28

TB-W: Traffic Plan - Sht. 69; Pedestrian Traffic Signage & Flow Plan - Sht. 71

WPP: Traffic Plan - Shts. 118-119;

Load Restrictions of Inlet Bridge to be included in Specifications.

Project Contractor Access Plan;

TB-E: Traffic Plan; Pedestrian Traffic Signage & Flow Plan.

TB-W: Traffic Plan; Pedestrian Traffic Signage & Flow Plan.

WPP: Traffic Plan.

Load Restrictions of Inlet Bridge to be included in Specifications.

NPS Constructability Checklist, 02-03-23 | page 3 of 7

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

SUBMITTALS

LIST MATERIAL SUBMITTALS ON CRITICAL PATH;

FOR DESIGN-BUILD (DB), LIST MATERIAL SUBMITTALS

REQUIRING GOVERNMENT APPROVAL

Historic rock, piles, trees. Historic rock, quarried rock, piles, trees.

LIST LONG LEAD ITEMS; MATERIAL AND EQUIPMENT

AVAILABILITY CONCERNS, SPECIAL DELIVERY

REQUIREMENTS

Sheet Pile, Micropiles, H-piles, Potomac river stone Sheet Pile, Micropiles, H-piles, quaried rock

17 LIST OF SOLE SOURCE MATERIALS AND GOVERNMENT

FURNISHED MATERIALS OR EQUIPMENT NA NA

SITE LAYOUT / RESOURCE PROTECTION

18 TYPES OF RESOURCE PROTECTION REQUIRED: List where and how requirements are included in design package.

1. Water quality for Tidal Basin and Potomac River (DOEE permit)

2. Tree Protection Shown on the Tree Protection Plan

3. Monument Protection in Specifications Existing Infrastructure

1. Water quality for Tidal Basin and Potomac River (DOEE permit)

2. Tree Protection Shown on the Tree Protection Plan

3. Monument Protection in Specifications Existing Infrastructure

19 ACCURATE SURVEY DATA ON PLANS: BMs, TBMs, TOPO

Benchmarks: Sheet 10;

TB-E: Topo on Shts. 20-23;

TB-W: Topo on Shts. 62-66;

WPP: Topo on Shts. 102-113

Benchmarks;

TB-E: Topographic drawings;

TB-W: Topographic drawings;

WPP: Topographich drawings.

PRELIMINARY SITE INVESTIGATION COMPLETE,

EXISTING CONDITIONS VERIFIED AND INCLUDED IN

PACKAGE

Confirmed. Confirmed.

CONSTRUCTION LIMITS CLEARLY SHOWN AND

DEFINED FOR BOTH ACCESS AND CONSTRUCTION: List where and how requirements are included in design package.

TB-E: Construction Staging Plan - Sht. 27;

TB-W: Construction Staging Plan - Sht. 70;

WPP: Construction Staging Plan - Shts. 120- 121;

Details found in Specifications.

TB-E: Construction Staging Plan;

TB-W: Construction Staging Plan;

WPP: Construction Staging Plan;

Details found in Specifications.

22 SPECIAL SIGNAGE REQUIREMENTS: Describe and list where requirements are included in design package.

Wayfinding, SHPO Historical Sign, Safety, Construction Signs, Project Info, Traffic Control.

Wayfinding, SHPO Historical Sign, Safety, Construction Signs, Project Info, Traffic Control.

LIST WORK SAFETY CONCERNS, LOCATION, AND

NEEDS: Include Height, Weather, Animal, Aerial, Public Accessibility, Security, Confined Space, Pathologic, Atmospheric, and others.

Security area shown on site plan, requirements detailed in Specifications High water, methane, confined space.

Security area shown on site plan, requirements detailed in Specifications High water, methane, confined space.

NPS Constructability Checklist, 02-03-23 | page 4 of 7

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

DEMOLITION

24 ALL EXISTING UTILITIES LOCATED AND ACCURATELY

SHOWN: Describe where shown.

TB-E: Existing Utilities on Shts. 20-23;

TB-W: Topo on Shts. 62-66;

WPP: Topo on Shts. 102-113

TB-E: Existing Utilities on existing plans;

TB-W: Topographic sheets;

WPP: Topographic sheets.

TEMPORARY SYSTEMS REQUIRED: Identify for Park or Public: Access, power, water, sanitary, covered access, exhibit relocation, movement assistance, accessibility.

Specification 01 50 00 - Temporary Facilities and Controls

Specification 01 50 00 - Temporary Facilities and Controls

SALVAGE, RECYCLING, STORAGE, AND DISPOSAL

REQUIREMENTS: Who is removing salvageable equipment and where requirements are included in design package?

Salvaged historical rock and riprap to be removed and reused by the DB contractor.

Salvage and reuse park benches/etc.

Tree debris, concrete, refuse.

Salvaged historical rock and riprap to be removed and reused by the DB contractor.

Salvage and reuse park benches/etc.

Tree debris, concrete, refuse.

27 NOISE / DUST / SAFETY CONCERNS FOR PUBLIC OR

ENVIRONMENT: Describe where included in design package.

Turbidity control within the Tidal Basin and Potomac River (DOEE Permit) Specification Sections:

01 35 23 Safety Requirements;

01 36 00 Accident Prevention;

01 57 19 Temporary Environmental Controls;

01 57 19.12 Noise and Acoustic Management;

Turbidity control within the Tidal Basin and Potomac River (DOEE Permit) Specification Sections:

01 35 23 Safety Requirements;

01 36 00 Accident Prevention;

01 57 19 Temporary Environmental Controls;

01 57 19.12 Noise and Acoustic Management;

CONSTRAINTS ON MEANS AND METHODS: Blasting, Burning, Tidal, Weather, Public Accessibility, Existing structures/features, Holidays and Seasonal, Permitting, other.

Specification Sections:

02 22 13 Vibration Monitoring;

01 50 00 Temporary Facilities and Controls;

01 57 19 Temporary Environmental Controls.

Specification Sections:

02 22 13 Vibration Monitoring;

01 50 00 Temporary Facilities and Controls;

01 57 19 Temporary Environmental Controls.

HAZARDOUS MATERIAL CONSIDERATIONS DEMO

METHODS AND DISPOSAL STATE AND LOCAL

REQUIREMENTS: Describe hazardous materials being addressed, how, and where in design package.

No known hazmat. Methane encountered during geotechnical drilling. See Specifications.

ARCHEOLOGICAL MONITORING REQUIREMENTS:

Describe what is needed and where in design package.

Identify who provides monitor.

Specification Sections:

01 35 00 Archeological Protection;

01 35 91 Historic Preservation Treatment.

Specification Sections:

01 35 00 Archeological Protection;

01 35 91 Historic Preservation Treatment.

NPS Constructability Checklist, 02-03-23 | page 5 of 7

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

CONSTRUCTION

MATERIAL, EQUIPMENT, LABOR AVAILABILITY FOR

REMOTE SITES: Describe issues and where included in design package.

Urban ,location with capable local contractors. Urban, location with capable local contractors.

SITE ACCESS RESTRICTIONS TO CONSTRUCTION

OPERATIONS IF DIFFERENT OR MORE SUBSTANTIAL

THAN ITEMS 12 AND 14

Load Restrictions of Inlet Bridge to be included in Specifications.

Load Restrictions of Inlet Bridge to be included in Specifications.

ANTICIPATED WEATHER CONSIDERATIONS,

CONSTRUCTION SEASON, OPTIMUM TIME TO

ADVERTISE, RECOMMENDED CONTRACT LENGTH

Construction to occur year-round. Bidding time set by award date requirements.

Weather Related Allowances located in Specification Section: 01 57 19 Temporary Environmental Controls.

Construction to occur year-round. Bidding time set by award date requirements.

Weather Related Allowances located in Specification Section: 01 57 19 Temporary Environmental Controls.

PARK / CONCESSION IMPOSED RESTRICTIONS

INCLUDED IN DESIGN PACKAGE AND IMPACTS ON

SCHEDULE & COST

TBD, unknown TBD, unknown

DESCRIBE FULL SCOPE OF WORK FOR LOCAL UTILITY

COMPANIES AND CONSTRUCTION CONTRACTOR FOR

EACH UTILITY

No permanent utilities planned. NPS-owned small storm drains to be rebuilt in place Temporary Construction Specification: 01 50 00 Temporary Facilities and Controls

No permanent utilities planned. NPS-owned small storm drains to be rebuilt in place Temporary Construction Specification: 01 50 00 Temporary Facilities and Controls

DESCRIBE DISRUPTION REQUIREMENTS FOR UTILITY

CONNECTIONS, CLOSURES, AND MAXIMUM

ALLOWABLE INTERRUPTIONS: Describe where addressed in design package.

Temporary Construction Specification: 01 50 00 Temporary Facilities and Controls

Temporary Construction Specification: 01 50 00 Temporary Facilities and Controls

37 SPECIFIC PHASING REQUIREMENTS: Detail what and where provided in design package.

Tidal Basin is priority. West Potomac Park is secondary. Outlined in Specification Section 01 11 00 Summary of Work.

Tidal Basin is priority. West Potomac Park is secondary. Outlined in Specification Section 01 11 00 Summary of Work.

DESCRIBE SPECIALIZED MATERIALS/INSTALLATION

METHODS CERTIFICATIONS/TRAINING REQUIREMENTS;

DETAIL GOVERNMENT REQUIRED SPECIALTY

SERVICES OR INSPECTIONS: List requirements.

Certified Arborist, Tree Planting Specification Sections:

01 56 39 Tree Protection;

32 05 33 Landscape Establishment;

32 93 00 Exterior Plants.

Certified Arborist, Tree Planting Specification Sections:

01 56 39 Tree Protection;

32 05 33 Landscape Establishment;

32 93 00 Exterior Plants.

COORDINATION WITH PARK OR CONCESSIONAIRE ON

BENEFICIAL OCCUPANCY: Grand opening, fixed completion dates, etc.

May 2026 US Anniversary, Tidal Basin. May 2026 US Anniversary, Tidal Basin.

ADJACENT or CONCURRENT CONTRACTS

COORDINATION / OVERLAPS ON CONCURRENT OR

FUTURE CONTRACTS

DC Water's Potomac River Tunnel Project, Long Bridge Project.

DC Water's Potomac River Tunnel Project, Long Bridge Project.

41 VALUE ENGINEERING POTENTIAL Design-Build team to value engineer design . Design-Build team to value engineer design .

NPS Constructability Checklist, 02-03-23 | page 6 of 7

DD or RFP Comments Design Development (DBB)

OR Request for Proposal (DB)

CD or RFP Resolution Construction Documents (DBB)

OR Request for Proposal (RFP)

PROJECT CLOSEOUT

42 TRAINING REQUIREMENTS, CERTIFICATIONS SPECIFIED NA NA

43 OPERATION & MAINTENANCE (O&M) REQUIREMENTS

NA, Parks to handle vegetation maintenance per Vegetation/Close Out Specification Sections:

01 78 23 Operation and Maintenance;

01 56 39 Tree Protection;

32 05 33 Landscape Establishment;

32 93 00 Exterior Plants.

NA, Parks to handle vegetation maintenance per Vegetation/Close Out Specification Sections:

01 78 23 Operation and Maintenance;

01 56 39 Tree Protection;

32 05 33 Landscape Establishment;

32 93 00 Exterior Plants.

LIST PERMITS NEEDING CLOSURE AND POINTS OF

CONTACT: Describe requirement; include specification and/or drawing location for each.

TBD

USACE / DOEE Joint Permit Closure

TBD

USACE / DOEE Joint Permit Closure

45 POST CONSTRUCTION REQUIREMENTS Long Term Maintenance Needs. Long Term Maintenance Needs.

46 LIST LONG TERM MAINTENANCE NEEDS AND LOCATION

IN THE DESIGN PACKAGE. NA, NPS to maintain storm drains. NA, NPS to maintain storm drains.

NPS Constructability Checklist, 02-03-23 | page 7 of 7

NAMA 318722

ATTACHMENT 9

NPS 100% COMPLETE QA REVIEW

COMMENTS & RESPONSES

NPS DSC Quality Assurance (QA) Review Comments Form National Park Service (NPS) - Denver Service Center (DSC) | 7-14-22

See worksheets (tabs) at the bottom of this form for QA Statements and individual review comments.

Park Acronym / Name: NAMA - National Mall and Memorial Parks PMIS #: 318722

(Project Management Information System Number)

Project Title: Rehabilitate Seawalls and Shoreline (Phase I)

Region: National Capital PEPC #: 107662 (Planning Environment & Public Comment Number)

DSC Path to Submittals on SharePoint or Q drive-paste in gray field to the right:

Submittal files must be unzipped.

Project Team X Design Phase / Milestone

Project Manager (PM): Brent Nagen DBB (Design-Bid-Build)

PM Email: brent_nagen@nps.gov DB (Design-Build)

Project Specialist (PS): Marcello Arroio PD (Predesign) - 100% Draft

PS Email: marcello_arroiobebiannosimoes@nps.gov SD (Schematic Design) - 100% Draft

Design & Construction Branch Chief (D&C BC): Paula Aldrich DB RFP (Request for Proposal) - 100% Draft

D&C BC Email: Paula_Aldrich@nps.gov X DB RFP (Request for Proposal) - 100% Complete

Contracting Officer (CO): Aaron Vollbracht DD (Design Development)

CO Email: aaron_vollbracht@nps.gov CD (Construction Documents) - 100% Draft

Contract Specialist (CS): Bryan Pemberton CD (Construction Documents) - 100% Complete

CS Email: bryan_pemberton@nps.gov Critical Comments

Architect/Engineer (AE) Prime -or- HDR MN NPS JV Division 1 Specifications (Div 1 Specs) Construction Submittal

Construction Contractor (Division 1): Other:

X Solicitation Method (Contracting Method)

Non-Competitive (Sole Source, Sole Source-8a, Service Disable, HUBZone, Women-Owned Small Business) Project Dates

X Full & Open (Competitive Negotiation) Construction FY (Fiscal Year): 2023/24

Limited Competition (Competitive Negotiation-HUBZone, Competitive 8a, Small Business Set-Aside, Proposed Award Date: 9/15/2023

Women-Owned Small Business) Proposed Midpoint of Construction Date: 08/01/2025 and 12/15/2025

Full & Open (Seal Bid-Low Price) QA Due Date: 1/26/2023

X Funding

LIC (Line Item Construction) *1 - Net Funding (Appropriation FY) = $109,993,204.92

X LRF (Legacy Restoration Funding) *2 - Other or additional Funds (Award FY) = $30,284,800.00

FLREA (Federal Lands Recreation Enhancement Act) *3 - Total Net Funds (Award FY) = $140,278,004.92

PDC (Park Direct Charge) *4 - (Minus) Funds Going to Other Contracts/Purposes = $0.00

Other: *5 - Total Funding Available for Construction Award (Award FY) = $140,278,004.92

QA Completed & Posted Date: 1/26/23 Complete

Federal Acquisition Regulation (FAR) 52.236-23 Responsibility of the Architect-Engineer Contractor

RESPONSIBILITY OF THE ARCHITECT-ENGINEER CONTRACTOR (APR 1984)

(a) The Contractor shall be responsible for the professional quality, technical accuracy, and the coordination of all designs, drawings, specifications, and other services furnished by the Contractor under this contract.

The Contractor shall, without additional compensation, correct or revise any errors or deficiencies in its designs, drawings, specifications, and other services.

(b) Neither the Government’s review, approval or acceptance of, nor payment for, the services required under this contract shall be construed to operate as a waiver of any rights under this contract or of any cause of action arising out of the performance of this contract, and the Contractor shall be and remain liable to the Government in accordance with applicable law for all damages to the Government caused by the Contractor’s negligent performance of any of the services furnished under this contract.

Cover - QA Review Comments page 1 of 29

NPS DSC QA Review Comments Form - QA Review, 7-14-22

Quality Assurance (QA) review comments shall apply to issues throughout review set with identical or similar concerns. No attempt is made to identify all occurrences.

The Construction Contractor's own Quality Control (QC) shall ensure review comments identified with Critical Comment below are thoroughly resolved prior to subsequent submittals.

Definitions of QA Summary Statements:

No Comment: No review comments for this submittal.

Refer to Comments: Refer to comments on the corresponding discipline worksheets (tabs) below.

Use the following 3 for 100% Complete design phases only: Construction Documents (CD) - 100% Complete and DB RFP (Design-Build Request for Proposal) - 100% Complete :

No Exceptions Taken: All previous comments have been addressed.

Exceptions as Noted: The comments identified are unresolved. No further QA review will be performed by the DSC Technical Branch. DSC Project Managers (PM) and DSC Design

& Construction Branch Chiefs are responsible for resolving these comments.

Critical Comment: These comments require resolutions. Comments identify concerns with code, NPS policy, and/or Government liability.

Discipline: QA Summary Statements:

Cultural Resource (CR) GC, no exceptions taken, 1/23/2023

Natural Resource (NR) KTJ 1/25/2023 Refer to Comments

Permitting (PERMIT) cde 1/25/2023 No Exceptions Taken

Architecture-Contemporary (AR-C)

Architecture-Preservation + Accessibility (AR-PR+A)

Civil (Site) + Environmental Engineering (CE+ENV) LRT 1/13/2023 Exceptions As Noted - Refer to Highlighted Comments

Constructability (CONSTRUCT) KAK 1/17/2023 Critical Comments: Refer to Comments

Electrical Engineering + Lighting (EE+L)

Estimating (EST) SRF1/23/23 Approved

Fire Protection Engineering (FPE)

Landscape Architecture & Accessibility (LA+A) TEG 1/18/2023 Critical Comments: Refer to Comments

Mechanical Engineering (ME)

Safety Engineering + Health & Life Safety (SFE+HLS)

Structural Engineering (SE) SDS 1/26/2023 No Exceptions Taken

Project Manager (PM)

Project Specialist (PS) MA 1/25/2023, minor comments

Park

Region

Fire Code Official (FCO)

Natural Resource Stewardship & Science (NRSS)

Public Health (PH)

Other-1

Other-2

QA Statements - QA Review Comments page 2 of 29

QA Review - Cultural Resource NPS DSC QA Review Comments Form, 7-14-22

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Greg Cody

Date Reviewed: 1/23/2023

Drawing # or

Specification Section # QA Comment Response

1 No review comments.

Cultural Resource Specialist QA Review page 3 of 29

QA Review - Natural Resource NPS DSC QA Review Comments Form, 7-14-22

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Kaetlyn Jackson

Date Reviewed: 1/25/2023

Drawing # or

Specification Section # QA Comment Response

3.1a Project Program , Current description is outdated. Suggest using language that is in the EA, deleting the current bullets and adding a bullet for Northern Long-Eared Bat: "On November 29, 2022 the USFWS published a final rule to reclassify the northern long-eared bat as endangered under the Endangered Species Act. On January 26, 2023, the USFWS published that they are delaying the effective date of a final rule published on November 30, 2022, reclassifying the northern long-eared bat as an endangered species. The effective date of the final rule amending 50 CFR part 17, published November 30, 2022, at 87 FR 73488, is delayed until March 31, 2023. Additional consultation with FWS related to the Northern Long-Eared Bat will be needed."

Revised to include this text: "On November 30, 2022 the USFWS published a final rule to reclassify the northern long-eared bat as endangered under the Endangered Species Act. The bat faces extinction due to the range-wide impacts of white-nose syndrome, a deadly disease affecting cave-dwelling bats across the continent. On January 26, 2023, the USFWS published that the effective date of the final rule amending 50 CFR part 17, published November 30, 2022, at 87 FR 73488, is delayed until March 31, 2023. Additional consultation with USFWS related to the northern long-eared bat will be needed."

3.1a Project Program, A time-of-year restriction for the protection of spawning anadromous fishes that prohibits in-water construction activities, including cofferdam installation, between February 15 and June 15 of any year may be imposed from February 15 to June 15 of any year to receive a not likely to adversely affect determination from NMFS."

Revised to reflect suggested edit.

Natural Resource Specialist QA Review page 4 of 29

QA Review - Permitting

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Chris Enyedy . 303-969-2699 . christian_enyedy@nps.gov . CPESC (Certified Professional in Erosion and Sediment Control)

Date Reviewed: 1/25/2023

Drawing # or

Specification Section # QA Comment Response

1 No Exceptions Taken

Permitting QA Review page 5 of 29

QA Review - Architecture-Contemporary

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Michael Olinger . 303-969-2386 . michael_olinger@nps.gov . RA (Registered Architect)

Date Reviewed:

Drawing # or

Specification Section # QA Comment Response

Architecture QA Review page 6 of 29

QA Review - Architecture-Preservation + Accessibility

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Paul Woodruff . 720-670-2791 . paul_woodruff@nps.gov . RA (Registered Architect)

Date Reviewed:

Drawing # or

Specification Section # QA Comment Response

Preservation Architecture Accessibility QA Review page 7 of 29

QA Review - Civil (Site) + Environmental Engineering

PMIS #: 318722

Reviewer: Lawrence Torrez; PE, Legacy LEED AP, CPSWQ 303-815-3331 Lawrence_Torrez@nps.gov

Date Reviewed: Draft RFP Review - 12/14/2022; Final RFP Review - 1/13/2023

Drawing # or

Specification Section # QA Comment Response

100% Draft RFP Review - 12/14/2022

1 RFP

Part 4.4.2.C: Section DC G2 - Site Services Criteria is referenced, however, this Section is not provided.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Addressed

No Action

2 Project Program No Review Comments No Action

3 Basis of Design Report No Review Comments No Action

G06.0

(Tidal Basin - East)

Overall Site Plan: Please provide a Scale for the Overall Site Plan.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Addressed

No Action

G32.0 thru G34.0

(Tidal Basin - East)

Please clarify why these "Placeholders" are included in the RFP Drawings if the Erosion and Sediment Control Plan will be developed by the DB Team after award of the DB Contract.

A/E Response: These were included to emphasize the requirement.

1/13/2023 QA Response: Comment Addressed

No Action

G35.0 thru G37.0

(Tidal Basin - East)

Please clarify why these "Placeholders" are included in the RFP Drawings if the Storm Water Management Plan will be developed by the DB Team after award of the DB Contract.

A/E Response: These were included to emphasize the requirement.

1/13/2023 QA Response: Comment Addressed

No Action

C05.1

(Tidal Basin - East)

Please add "Labels" to each Cross-Section (similar to Section TB-E 1011+00) or indicate "Typical" on each Label on

TB-E 1011+00.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Not Addressed for Each Cross-Section

Labeled each section

C11.1

(Tidal Basin - East)

Please add "Labels" to each Cross-Section (similar to Section TB-E 1011+00) or indicate "Typical" on each Label on

TB-E 1011+00.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Addressed

No Action

C04.2

(Tidal Basin - West)

Please add "Labels" to each Cross-Section.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Not Addressed for Each Cross-Section

Labeled each section

C09.2

(Tidal Basin - West)

Please add "Labels" to each Cross-Section.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Addressed

No Action

Civil Engineering QA Review page 8 of 29

PMIS #: 318722

Reviewer: Lawrence Torrez; PE, Legacy LEED AP, CPSWQ 303-815-3331 Lawrence_Torrez@nps.gov

Date Reviewed: Draft RFP Review - 12/14/2022; Final RFP Review - 1/13/2023

Drawing # or

Specification Section # QA Comment Response

11 Tidal Basin West

If the Team decides that "Placeholders" for the Erosion and Sediment Control Plan and Storm Water Management Plan are required for the Tidal Basin - East (reference Comments 12-13 above), will these same "Placeholders" be added for Tidal Basin - West?

A/E Response: TB-W sheets are also included.

1/13/2023 QA Response: Comment Addressed

No Action

C12.3 - C14.3

(West Potomac Park)

Please add "Labels" to each Cross-Section.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Not Addressed for Each Cross-Section

Labeled each section

C27.3 - C29.3

(West Potomac Park)

Please add "Labels" to each Cross-Section.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Not Addressed for Each Cross-Section

Labeled each section

14 West Potomac Park

If the Team decides that "Placeholders" for the Erosion and Sediment Control Plan and Storm Water Management Plan are required for the Tidal Basin - East (reference Comments 12-13 above), will these same "Placeholders" be added for West Potomac Park?

A/E Response: WPP sheets are also included to emphasize the need and requirement to the D-B Contractor

1/13/2023 QA Response: Comment Addressed

No Action

15 Section 023213

Subsurface Drilling and Sampling: Please complete this Section. There are several "Blanks" throughout this specification section.

A/E Response: ADDRESSED

1/13/2023 QA Response: Comment Addressed

No Action

16 Section 024100

Part 2.1.C: This Part is incomplete.

A/E Response: Modified to specify minimum requirements for fill material sampling and testing; ea. 50CY for non structural and ea. 25CY for structural.

1/13/2023 QA Response: Comment Addressed

No Action

17 Section 033000

Part 3.14.3.3: This Part is incomplete.

A/E Response: Found blanks in 3.13 and filled in with testing criteria

1/13/2023 QA Response: Comment Addressed

No Action

18 Section 311100

Part 3.3.1: This Part is incomplete.

A/E Response: Re: saleable timber - assumed that KTR will remove and dispose.

1/13/2023 QA Response: Comment Addressed

No Action

19 Section 312300.00

Parts 2.4, 2.4.2, 2.4.3, 3.11.1.1, 3.11.1.2, 3.12, 3.12.2: These Parts are incomplete.

A/E Response: Specifications are intentionally left blank in some areas to allow the D-B Contractor choices during design. The specification has been reviewed and bracketed text remains intentionally to allow due diligence and creativity of the contractor.

1/13/2023 QA Response: A/E Response Acknowledged (The DSC Project Manager and DSC Project Specialist should be made aware that this is the methodology chosen by the A/E).

JV Team and NPS Team discussed the approach during the 100% Complete RFP presentation in Washington, DC on January 12, 2023. No further editing or action taken by the JV team.

Civil Engineering QA Review page 9 of 29

PMIS #: 318722

Reviewer: Lawrence Torrez; PE, Legacy LEED AP, CPSWQ 303-815-3331 Lawrence_Torrez@nps.gov

Date Reviewed: Draft RFP Review - 12/14/2022; Final RFP Review - 1/13/2023

Drawing # or

Specification Section # QA Comment Response

20 Technical Specifications

Perform a Quality Control Review of all Technical Specifications to ensure all Sections are complete.

A/E Response: Comment acknowledged by JV; QC performed prior to subsequent submittal.

1/13/2023 QA Response: Comment Addressed

No Action

21 Geotechnical Data Report No Review Comments No Action

Constructability

Checklist No Review Comments No Action

Sustainability

Checklist No Review Comments No Action

End of Review Comments

Civil Engineering QA Review page 10 of 29

QA Review - Constructability

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Krystal Krull . 303-987-6730 . krystal_krull@nps.gov

Date Reviewed: 8/23/2022-PD Review; 11/15/2022-SD Review; 12/13/2022: 100% Draft CD Review; 1/12/2023: 100% RFP Complete

Drawing # or

Specification Section # QA Comment Response

Thank you for the preliminary work that was provided as part of this submittal. The information provided was very comprehensive. It is appreciated.

11/15/2022: THANK YOU AGAIN FOR THE AMOUNT OF EFFORT SHOWN FOR THE WORK SO FAR. IT IS

ACKNOWLEDGED AND APPRECIATED.

12/13/2022: Closed, Thank you again.

No Action

Access routes-both road and foot/material/ equipment traffic, staging, existing utility capabilities, water restrictions, will need to be very clear for the CD's, given the location. Please be clear to identify storage and stockpile-(meaning refuse and demo) locations as well as limitations to Contractor parking and equipment and proposed fueling location. Thank you 11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. LOOKING FORWARD TO THE

DRAWINGS AND THANK YOU FOR THE ATTENTION. THANK YOU

12/13/2022: Comment still applies for next submittal, based on response. How does the information not provided work into the requirements in 01 11 00, 1.3.A.3? The parking, stockpile, etc. will also affect visitor access won't it?

Based on what is written in 1.3.A.3, this information should be needed as well. Thank you for the efforts so far...

Thank you

1/13/2023: CLOSED, BASED ON RESPONSE. THANK YOU FOR THE FOLLOW UP.

No Action

Please consider how salvage…and the possibility of salvage not yielding enough material for reconstruction…will be addressed. It will be critical to make sure that there is enough material to perform the work one way or another. Multiple or sole sources will need to be identified for acceptable material. Thank you

11/15/2022: COMMENT WILL APLLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/13/2022: Comment still applies, based on response. Thank you for the detailed response....however, it still doesn't fully address the question. What happens if there is not enough salvage stone? Is this virtually impossible based on the amount to be salvaged, or does the project come to a halt? Thank you for the consideration.

1/17/2023: PLEASE SIMPLY CONFIRM THAT THERE ARE KNOWN LOCATIONS FOR SOURCING ACCEPTABLE STONE. THIS IS NEEDED TO MAKE SURE THAT THE DB IS NOT STUCK WITH PLAYING "WHICH ROCK" WHEN

TRYING TO MEET THE PROPOSED CONTRACT DURATION. THANK YOU

Addressed with additional wording and clarification in Spec Section 04 20 00; per JV and NPS team meeting discussion held on 01/31/23 with Krystal Krull, Marcello B., Brent N

Please take the time to consider what precautions and safety procedures should be provided in case there were to be what seems to be a relatively normal event of above average moisture. The comment is not trying to say, plan for the impossible.

This is simply a question about additional "planned" protection regarding above average precipitation during the construction.

Reviewer will gladly discuss...and thank you for the consideration.

11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/14/2022: Closed, Based on Response. Thank you for the consideration and implementation.

No Action

Please make sure that location is considered with respect to technical requirements and that geotechnical investigation is a part of the next submittal or that requirements for Contractor provided geotechnical investigation is very clear. This aspect represents a significant amount of risk. Thank you

11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/13/2022: Closed, Based on submittal. Thank you

No Action

Please review the Department of the Interior Automated Controls Design Standard on the Workflows Website, and discuss with the Park with regard to any communications, automation, SCADA, etc. Any information obtained during this conversation should be integrated into the project needs. Please be aware that the impact can be substantial. This aspect may not apply in any way but given the unknown, it is better to simply call out the question and the response may be that there are no systems that apply. Thank you

11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/14/2022: Closed, Based on Response. Thank you for the follow up.

No Action

Consider if there will be multiple substantial completions- how the sites will be broken down to be accepted when completed.

It is important to proclaim this in the Summary of Work. It will also be important to identify how final acceptance will take place. Will the expectation be video representation from Contractor hired divers or will there be separate Government inspection- which is not normal. These costs need to be part of the estimate. Thank you 11/15/2022:COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. PLEASE CONTINUE TO WORK

THROUGH THE ACCEPTANCE AND INSPECTION REQUIREMENTS. THANK YOU

12/14/2022: Closed, Based on response. Thank you for the work.

Construction QA Review page 11 of 29

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Krystal Krull . 303-987-6730 . krystal_krull@nps.gov

Date Reviewed: 8/23/2022-PD Review; 11/15/2022-SD Review; 12/13/2022: 100% Draft CD Review; 1/12/2023: 100% RFP Complete

Drawing # or

Specification Section # QA Comment Response

Show limits of work clearly and provide guidance on stockpile locations, height, maintenance, as needed. Access routes, visitor/security fencing will be important as well as clarity regarding salvage locations. Thank you 11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. LOOKING FORWARD TO

SEEING THE DRAWINGS. THANK YOU

12/14/2022: Comment still applies per comment 2. These two comments can be combined but represent similar items. In this case....stockpile height and maintenance takes a large consideration as well as identifying salvage staging. Thank you

1/17/2023: CLOSED, BASED ON RESPONSE. THANK YOU.

No Action

Dewatering requirements will be important at least from an expectation and installation perspective as well as water handling.

It would seem that this could also apply to debris containment and pollution control needs for the construction operations.

Thank you 11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU FOR THE

CONSIDERATION.

12/14/2022: Comment still applies for next submittal. Please provide specific expectation/requirements so the Contractor can effectively bid...and more importantly, so the area is protected Thank you

1/17/2023: CLOSED, BASED ON RESPONSE. THANK YOU

No Action

10 overall comment

Please make sure that the Contractor is required to provide all inspection and certification for completion as part of the CD's, Thank you

11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/14/2022: Comment still applies, based on submittal. There are incorrect references, insufficient testing requirements, in the technical specifications. Thank you 1/12/2023: COMMENT STILL APPLIES. THE SPECIFICATIONS PROVIDE CONFUSING DIRECTION AND INCORRECT DIRECTION IN MULTIPLE AREAS. THE "OWNER" WILL NOT BE PROVIDING TESTING, AND SPECIFICATION SECTIONS NEED TO BE VERY CLEAR....NOT PROVIDING CONFLICTING INFORMATION ON QUALITY CONTROL....WHEN REFERRING TO TESTING. THE SECTIONS SHOULD BE CLEAR, CONCISE, AND DIRECT THE CONTRACTOR TO PERFORMANCE REQUIREMENTS, MATERIAL NEEDS, TESTING REQUIREMENTS, FREQUENCY, AND SUBMITTAL OF TESTING RESULTS. THANK YOU Corrected all instances of testing to direct Contractor to be wholly responsible for testing. Reviewed BDR, Specifications, and

RFP.

11 overall comment

Please make sure to address any compaction/backfill requirements as well as testing needs. Thank you 11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU FOR THE WORK

SO FAR.

12/14/2022: Comment still applies, based on submittal. Recognizing the need for the Contractor to provide geotechnical services, it is still necessary to state what the end product requirements need to be....or at least what the testing should prove. Reviewer will gladly answer questions....and the comment is not intended to be ornery.

The area....requires a unique amount of consideration to ensure the future. Doing this work as a DB presents a unique circumstance to all. Thank you in advance.

1/17/2023: CLOSED, BASED ON THE SUBMITTAL. THANK YOU

No Action

12 overall comment

Please provide a Park or location specific weather/evacuation/emergency procedure. This is critical in establishing good pricing and good procedure in case of unexpected events and material/work security. The simple practice of providing the information means the Contractor is aware and needs to plan for the unexpected.

11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU

12/14/2022: Comment still applies, based on submittal. Thank you

1/17/2023: CLOSED, BASED ON SUBMITTAL. THANK YOU

No Action

13 overall comment

Working hours, noise restrictions, turbidity, and testing will be very important for the work. Given recent inflation characteristics, there will be a good amount of discussion about specificity of design vs. obligation timing, vs. design necessity. The reality is that there isn't likely a "right" answer. This is an NPS asset and that should be important to all parties. The key will be to provide the best estimate possible. Acceptance needs will also end up being critical. Consider these issues when creating the Contract Line Items and consider if unit pricing may be beneficial in containing cost.

Reviewer will gladly assist. Thank you 11/15/2022: COMMENT WILL APPLY FOR NEXT SUBMITTAL, BASED ON RESPONSE. THANK YOU FOR THE WORK

SO FAR.

12/14/2022: Comment will still apply, based on submittal. Thank you

1/17/2023; CLOSED, BASED ON SUBMITTAL. THANK YOU

Construction QA Review page 12 of 29

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Krystal Krull . 303-987-6730 . krystal_krull@nps.gov

Date Reviewed: 8/23/2022-PD Review; 11/15/2022-SD Review; 12/13/2022: 100% Draft CD Review; 1/12/2023: 100% RFP Complete

Drawing # or

Specification Section # QA Comment Response

14 NEW COMMENTS 12/14/2022

Please continue to coordinate specific Park information and specification sections into the specifications. Current submittal references specifications not included, unclear requirements for security and security facilities, additional information that should be provided, and technical specifications that need more attention. Thank you

1/17/2023: CLOSED, BASED ON SUBMITTAL. THANK YOU

No Action

Thank you for the work so far. Please continue to coordinate the information so that solicitation can provide an accurate and coherent set of bids. Thank you for the work that has been completed. At this point it is just important to represent what is known, unknown, where the Contractor can and can't be, the expectations for security, safety, the end result of the work, and how the work will be performed. Reviewer will gladly discuss and answer questions. Thank you.

1/17/2023: CLOSED, BASED ON SUBMITTAL. THANK YOU FOR THE FOLLOW UP.

No Action

Please briefly consider if there are special requirements from the Contractor for acceptance. Are there any special inspections, videos, or approvals needed? Thank you in advance.

1/17/2023: CLOSED, THANK YOU FOR THE FOLLOW UP.

No Action

18 NEW COMMENTS 1/16/2023

Where are the project reports included? They are not fully referred to in Specification Section 01 11 00, but they are referenced in part. The reports need to be part of the Solicitation. Thank you no action required, per 01/31/23 mtg with K. Krull. Provided direction to location of requested files - Solicitation, Part III, Section J

20 END OF COMMENTS

Construction QA Review page 13 of 29

QA Review - Electrical Engineering + Lighting

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Marie Fitzpatrick . 303-969-2759 . marie_fitzpatrick@nps.gov . PE (Professional Engineer)

Date Reviewed:

Drawing # or

Specification Section # QA Comment Response

Electrical Engineering QA Review page 14 of 29

QA Review - Estimating

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer:

Date Reviewed:

Drawing # or

Specification Section # QA Comment Response

1 Contract Price Schedule An updated estimate has not been provided - Cost for each area of work match the final approve budget submitted No action

Contract Price Schedule

The price schedule separates the WPP North wall into CLIN 05 and Clin 06 - to allow for flexibility in awarding the project within budget.

No action

RFP

The RFP and the Contract Price Schedule match the approved budget and provide a reasonable bid methodology - I recommend moving forward with the bid.

No action

Estimating QA Review page 15 of 29

QA Review - Fire Protection Engineering

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Joe Carruth . 720-926-7020 . joseph_carruth@nps.gov . PE (Professional Engineer)

Date Reviewed:

Drawing # or

Specification Section # QA Comment Response

Fire Protection Engineering QA Review page 16 of 29

QA Review - Landscape Architecture + Accessibility

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Tom Gardner . 303-641-7299 . thomas_gardner@nps.gov . RLA (Registered Landscape Architect), LEED AP ND (Leadership in Energy & Environmental Design Accredited Professional Neighborhood Development)

Date Reviewed: Draft SD Review 11/21/2022, Draft RFP Review 12/26/2022, Complete RFP 1/18/2023

Drawing # or

Specification Section # QA Comment Response

1 NPS Universal Design

Please see DSC Workflows, DBB1.0 Predesign (PD), 1.9 Predesign Deliverables, Accessibility Requirements (ABA). The PD deliverable shall include a completed NPS Universal Design and Accessibility Scoping Form for ABAAS Facilities.

Ultimately this form is included as an attachment to Specification Section 014000 Quality Requirements. Form can be found here: https://www.nps.gov/dscw/ds-accessibility-universal-design.htm

Response: The NPS Universal Design and Accessibility Scoping Form will be included in Specification Section 014000

2022_1121 QA Response: Comment Open.

Response: The form and the accessible route diagram has been included in the Appendix of the Basis of Design Report.

2022_1226 QA Response: Comment Addressed.

No action.

2 NPS Universal Design

Proposed paving slopes should comply with DSC Accessible Route Design Standards, Located here:

https://www.nps.gov/dscw/ds-accessibility-universal-design.htm

Response: Agreed. Paving slopes will comply with DSC Accessible Route Design Standards.

2022_1121 QA Response: Comment Closed.

No action.

3 NPS Universal Design

For future design submittals please include an Accessibility Plan to identify project universal design and accessibility goals.

Include site plan with accessible routes with slope requirements; accessible routes, turning space, maneuvering space and reach ranges shown. In addition the plan should note accessible signage and wayfinding elements.

Response: Agreed. Accessibility plan will be included.

2022_1121 QA Response: Comment Open.

Response: The form and the accessible route diagram has been included in the Appendix of the Basis of Design Report.

2022_1226 QA Response: Comment Addressed.

No action.

Landscape Architecture Accessibility QA Review page 17 of 29

QA Review - Landscape Architecture + Accessibility

Park Acronym / Name: NAMA - National Mall and Memorial Parks

PMIS #: 318722

Reviewer: Tom Gardner . 303-641-7299 . thomas_gardner@nps.gov . RLA (Registered Landscape Architect), LEED AP ND (Leadership in Energy & Environmental Design Accredited Professional Neighborhood Development)

Date Reviewed: Draft SD Review 11/21/2022, Draft RFP Review 12/26/2022, Complete RFP 1/18/2023

Drawing # or

Specification Section # QA Comment Response

4 General Comment

Recommend retaining an arborist to assess and evaluate the condition and value of the existing trees to be impacted by the proposed improvements prior to the commencement of construction.

Response: Coordination with NPS Arborist to evaluate and value of the existing trees to be impacted by the proposed work.

An arborist evaluation was not part of the current project scope. If NPS Arborist can provide the evaluation and value for each tree the replacement calculations can be incorporated into these plans. Alternatively, a note can be added to the plans to state "Contractor to retain arborist to evaluate and value existing trees to be impacted in coordination with NPS Arborist.

Contractor responsible for finalizing replacement calculations."

2022_1121 QA Response: Comment Addressed.

No action.

02-1 - 02-9 Slope Analysis & 05-8 - 05-11 Vegetation Plan and Key Map Construction Impact Analysis

Understanding that these are preliminary sections the impact upon the existing tree plantings appears to be significant. Are there any proposed strategies to maintain the existing grades at the base of the trees such as tree wells?

Response: Trees within the project grading area will be removed and replaced. All grading will be modified for storm water considerations. Adding protection wells at each tree would be unsightly and not consistent with the goal of reestablishing the pattern of trees and character and landform of the cultural landscape. Tree wells would trap water flowing toward the river which would have a negative impact to preserving trees. Therefore tree wells are not recommended.

2022_1121 QA Response: Comment Closed.

No action.

Vegetation Plan and Key Map Construction Impact Analysis

Please include a tree protection detail with future design submittals.

Response: Agreed. A tree protection detail will be included in the DB RFP.

2022_1121 QA Response: Comment Addressed. Tree protection detail included on Sheet L36.3 West Potomac Park Tree Protection Details.

No action.

7 2022_1121 Draft SD Review Comments

8 C07.1 General Comment

Please label proposed percent slopes on Grading and Drainage Plans for future design submissions.

Response: The slopes are defined by the Grading Plan in the 100% Draft…