Attachment 05 SP1 SOW Baby Falls DB.pdf

i

SCOPE OF WORK BASIC

CONTRACT

Design-Build Procurement

CONTRACT TYPE [CHECK ONE]

Specific Rate of Pay

Cost Plus Fixed Fee

Lump Sum ii

Contents

SECTION 1 3

1 PROJECT BACKGROUND 3

2 SCOPE OF WORK SUMMARY 4

Base Items: 4 Baby Falls Overlook (GPS: 35.326855, -84.176359) 4

3 CONSULTANT RESPONSIBILITY AND DUTIES 8

4 PROJECT REQUIREMENTS 8

4.1 Phasing Requirements of Baby Falls Overlook: 8

4.2 Technical Specifications: 9

4.3 Submittals and Deliverables: 10

4.4 Additional Design Resources and Requirements: 12

5 WORK PRODUCT COMPLETION 13

6 GOVERNMENT FURNISHED PROPERTY 13

7 PROJECT COSTS 14

8 SUBMITTAL LIST 14

SECTION 2 15

1 CURRENT FOREST SERVICE SPECIFICATIONS AND STANDARDS 15

2 COMPUTER DATA COMPATIBILITY 15

3 PROJECT DESIGN DATA AND STANDARDS 15

SECTION 1

PROJECT SPECIFIC INFORMATION

1 PROJECT BACKGROUND

The Forest Service has identified a need to construct a new overlook, walkway, and river access at the Baby Falls Day Use Area. The project is needed because current access to the vista at Baby Falls is inadequate for sightseers and motorists on Tellico River Road and is causing natural resource damage to the Tellico River riparian area.

Baby Falls Day Use Area is located on the Cherokee National Forest in Tennessee. Table 1 provides the approximate latitude and longitude of the recreation site:

Table 1: Project Location

Location Name Latitude Longitude

DD DD

1 Baby Falls Day Use 35.327531o N 84.176742o W

Figure 1. Baby Falls

Baby Falls Day Use area is located on the southern bank of the Tellico River adjacent to National Forest System Road (NFSR) 210, just upstream from Bald River Falls, a prominent and very popular destination.

Baby Falls Day Use is a small recreation area providing picnicking and water play activities. It also facilitates vehicles turning around in the corridor after viewing Bald River Falls. The Tellico River is popular for trout angling and other outdoor recreation activities.

This project consists of the following:

Prepare Construction Documents Including Construction Ready Plans and specifications for Baby Falls Overlook Construct Overlook and associated infrastructure at Baby Falls

Project Name: Baby Falls Overlook Design-Build

2 SCOPE OF WORK SUMMARY

Base Items:

The Forest Service will provide a site survey, geotechnical investigation, Hydrologic & Hydraulic Analysis, 30% structural calculations, and 30% Preliminary Design for Baby Falls Overlook. The Baby falls Overlook project includes final design with construction ready plans, and construction services.

The design shall adhere to Section 3 Design Requirements. The contractor will provide submittals and final construction documents according to the details of this document. Once accepted, the contractor will construct the improvements according to the plans and specifications of the design.

Baby Falls Overlook (GPS: 35.326855, -84.176359)

Baby Falls Overlook is adjacent to Tellico River Road just upstream of Bald River Falls Bridge. The intended location of the overlook is currently undeveloped but heavily used, eroded, and degraded. It is a popular location to view the falls, access the river, and bring kayaks up the bank after floating Baby Falls. Aesthetic considerations are extremely important to the success of this project, especially as viewed from the river. Natural materials, shapes, and colors should be seen, especially when viewed from below and from the lip of the falls. Bright wood or metal structures, cement footers or walls, bright signs, visibly intrusive foundations, and undersides of structures will be considered undesirable intrusions into the natural scenery. The desire is to use on-site materials as much as possible for the rockwork. Design elements from the new Bald River Falls bridge, including handrails, should be incorporated to tie the two locations together. Visitor experience, from both the perspective of the falls observer and the river user, is also very important. The “fishbowl” effect should be minimized, by aligning viewing opportunities along the road and spread among several smaller viewing sites rather than a single large platform.

Special site design considerations:

o Stream Simulation channel design is required to restore the site to natural stream form and function. A pedestrian walkway at least 6 feet wide extending from the existing walkway at Baby Falls Day Use site approximately 240 feet to the site of the proposed overlook. This walkway should provide protection to pedestrians from vehicular traffic on FSR 210 using barriers or grade separation.

o An accessible secondary overlook approximately located at 35.326855, -84.176359.

o Approximately 110 feet of handrail or other restriction extending from north of the secondary overlook to the proposed location of the main overlook.

Commented [BY1]: Is this necessary o A main overlook sited at approximately 35.3266914, -84.1762092. Steps from the walkway to this overlook are allowable, and this landing should provide room for small groups. This landing will have a handrail.

o Rustic rock steps will lead down to a landing made of rough stones located at approximately

35.3266454, -84.1762481. Rough steps will continue down to the edge of the river to allow for water access.

o Road and walkway stabilization measures may be necessary for approximately 50 feet of the walkway between the secondary overlook and the main overlook. A slight narrowing or realignment of FSR 210 may also be considered as part of the project if advantageous to cost and construction.

o Any route up to the road from below the falls should ensure sufficient space to carry and turn a 12-foot boat on either shoulder, and any railings do not prevent shoulder-carrying a boat.

Ideally the route will allow kayakers to carry their boats out of the water without having to walk directly through the viewing areas.

Any trees between the river and road should be maintained to the maximum extent possible.

Figure 2. Overview Map of Design Features

Figure 3. View of Baby Falls from secondary overlook location

Figure 4: View of proposed main overlook and water access location

Figure 6. Plan View of Proposed Preferred Design of Baby Falls Overlook

Figure 5. View of area of potential road stabilization measures

Figure 7. Elevation View of Proposed Preferred Design of Baby Falls Overlook

3 CONSULTANT RESPONSIBILITY AND DUTIES

The Consultant is responsible for:

Professional services and deliverables required to assist the Cherokee National Forest with design, and implementation of the project, utilizing a design-build procurement process.

Designer must be a professional engineer or work under the direct supervision of a professional engineer licensed in the State of Tennessee. Engineers/designers must be qualified by education and experience to design all aspects of the project.

4 PROJECT REQUIREMENTS

4.1 Phasing Requirements of Baby Falls Overlook:

4.1.1 Phase 1: Preliminary Site Investigation:

Task completed.

4.1.2 Phase 2: Preliminary Design (30%):

Task completed.

4.1.3 Phase 3: Intermediate Design (80%):

Based on the results of the Forest Service review of the Preliminary Design, revise the design to within eighty percent (80%) of the final design. Refine all relevant and necessary design aspects. Submit the Intermediate Design to the Forest Service for review; document and address all comments and questions received from the Forest Service and revise the designs accordingly. This phase includes an updated project design report with discussion of decision points, cost estimate and project schedule.

Contractor shall schedule a virtual meeting with the Forest Service to discuss concepts and designs prior to commencement of Forest Service 80% review.

4.1.4 Phase 4: Final Design:

Based on the results of the Forest Service review of the Intermediate Design, revise the designs to within ninety-five percent (95%) of the final design. Finalize all relevant and necessary design aspects with the Forest Service in a final review. Document and address all comments and questions received from the Forest Service and revise the designs accordingly.

Contractor shall schedule a field meeting with the Forest Service to discuss final plans and specifications prior to commencement of Forest Service 95% review.

Upon approval of 95% plans, provide all final submittals and deliverables, including but not limited to 100% plans, drawings, specifications, and estimates to the Forest Service, including signatures and professional seals as applicable. Provide documentation of engineering design, analysis data, and correspondence to the Forest Service. Acceptance of the design will be in writing after comments from 95% review have been incorporated and all other requirements have been met.

4.1.5 Phase 5: Construction:

Contractor shall be available for consultation to Forest Service for a set number of hours over the duration of design implementation.

4.2 Technical Specifications:

4.2.1 Engineering Design – Applicable Design Standards and Specifications:

Engineering design shall attempt to maximize construction and cost efficiencies. The final determination of size and geometry shall be made in consultation with the Forest Engineer, Forest Landscape Architect, and Contracting Officer, or their designated representatives. Engineering design shall conform to the following standards and specifications, in addition to applicable engineering standards, regulations, and best practices:

i) 2009 AASHTO LRFD Guide Specifications for the Design of Pedestrian Bridges, 2nd Edition with 2015 Interim Revisions, or current version.

ii) Forest Service Built Environment Image Guide

iii) Forest Service Outdoor Recreation Accessibility Guidelines

iv) Forest Service Special Project Specifications, current version

v) Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects

(FP-14), as applicable

vi) Forest Service standard trail drawings

4.3 Submittals and Deliverables:

4.3.1 General Requirements:

The Design Firm work products include:

An initial project overview field visit with contractor, design firm, and Forest Service project implementation team is required. Contractor shall schedule this meeting within 10 days of award of the task order. Field visits for each of the grouped projects is not required to occur at one time. Four formal interim checkpoints will be required. Review will not begin until a full submission is received. A comment review meeting will be scheduled at the end of each review.

i) Submit all documentation to the Contracting Officer or the Contracting Officer’s designated representative.

ii) All submittals must be complete before review. Partial submittals will not be reviewed.

iii) Submittals provided by the Contractor shall be in an electronic format approved by the

Forest Service. Transmit submittals to the Forest Service via email or other method approved by the Government.

iv) Scale design drawings for clear and legible plotting on 11-inch by 17-inch paper.

v) Topographic surveys, designs and drawings shall be completed in Autodesk Civil 3d and submitted to the FS in both Autodesk Civil 3d (*.dwg) and Adobe PDF (*.pdf) format with all objects included in their unexploded state.

vi) For topographic survey data, provide ASCII files containing the coordinates for every network point set and found (P,N,E,Z,D).

vii) Once submitted, all designs and drawings become the property of the Forest Service to modify and utilize as determined by the Forest Service.

4.3.2 List of Submittals and Deliverables by Phase:

The Contractor shall return the following items for each phase:

Phase 3: Intermediate Design (80%) Submittals:

An 80% review with updated project design report that includes decision points, cost estimate and project schedule. All Project Plan Sheets including any details and Specifications to be complete. (14-day review period)

1. 80% Drawings and Specifications

a. In addition to requirements of 60%, Structure details, general notes, soil and erosion control and other miscellaneous details should be incorporated.

b. Road Cross Sections

c. Excavation Estimates

d. Clearing Limits

e. Roadway Typical Detail

f. Temporary Traffic Control

g. Sign Plan

h. Dewatering Plan

i. Final Stream Profile and Cross Sections

j. Stream Restoration Extents – Upstream & Downstream

k. Stream Bedform Design including key constructed features, habitat, and roughness features.

l. Stream Simulation Details

m. Revegetation Plan

2. Final Structural and Geotechnical Calculations

3. Final Forest Service Supplemental Specifications

Deliverables: Intermediate Design, including:

(i) Revised Plans;

(ii) Drawings;

(iii) Engineering Calculations;

(iv) Quantities;

(v) Draft Project Specifications

Phase 4: Final Design (95% & 100%)

Submittals: Responses to Forest Service comments received from Phase 3 review

A 95% final review will include a field review of the final plans and specifications and will include final design report complete with final cost estimate and project implementation schedule. (10-day review period) 100% Final Plans: Acceptance of the design will be in writing after comments from 95% review have been incorporated and all other requirements have been met.

o Provide Temporary traffic control Sediment Erosion control, Safety, Spill

Prevention, and other required plans as required by the contract and specifications.

o The engineer shall supply the FS with electronic copies of all calculations, plans, and specifications prior to each review.

o Designs and drawings shall be completed in Autodesk Civil 3d and submitted to the FS in both Autodesk Civil 3d (*.dwg) and Adobe PDF (*.pdf) format with all objects included in their unexploded state.

o Plan sheet size shall be 11” x 17” unreduced.

o Once submitted, all designs and drawings become the property of the FS to modify and utilize as determined by the FS.

o Final As-Built Survey and Plans including location of known utilities.

Deliverables: Final Engineering Design, including:

(i) Plans;

(ii) Drawings;

Commented [MBFCT2]: Do we still want a 95%?

Commented [BY3R2]: Yes. Just to make sure the comments from 80% design were incorporated prior to calling it 100%

(iii) Calculations;

(iv) Quantities;

(v) Project Specifications

Design Documentation, including:

(i) Topographic Surveys;

(ii) Geotechnical Reports;

(iii) Hydrology Calculations and HEC-RAS Analyses for final designs;

(iv) Design documentation and correspondence supporting the engineering design

Phase 5: Construction Services

Deliverables: Installation and Construction of Baby Falls Overlook

4.4 Additional Design Resources and Requirements:

4.4.1 Design:

o Projects should adhere to the requirements of Forest Service Handbooks – 7709.56 Road Preconstruction Handbook and 7709.56b_Transportation Structures Handbook.

https://cms.fs.usda.gov/directives/list o Project limits both within the stream channel and along the roadway shall be sufficient to provide a transition into the newly reconstructed segment. Any vertical/horizontal modifications that are required to satisfy the construction is to be considered incidental to the work.

o Hydraulic Modeling and Analysis to be performed:

Hec-RAS, WinXSPro, and/or HY-8 Bed mobility and key pieces stability analyses (Appendix E, USDA FS Stream

Simulation) Bank Stability Analysis: U.S. Army Corps of Engineers. 1994 Engineering Design of

Flood Control Channels. EM-1110-2-1601. Washington D.C.

https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/ em_1110-2-1601.pdf o Design structures according to AASHTO LRFD Bridge Design Specifications current edition, supplements thereto and manufacturer recommendations. Example https://aashtojournal.org/2020/05/08/aashto-issues-updated-lrfd-bridge-design-guide/ o Provide a schedule of items for proposed work at each project site according to the sample provided.

o Prepare a structure engineering and foundation investigation report according to 7709.56b Transportation Structures Handbook, Chapter 14 Project Engineering Report and Chapter 31.3 Foundation Investigation Report. Example Provided.

o Design structures with HL-93 Live Load and appropriate dead loads.

o Existing structures shall be removed and disposed of legally off forest property.

o Provide any permanent traffic control (i.e., object markers, permanent signage) as required by project design.

o Design temporary traffic control measures at the appropriate scale for each project. (Advance

Commented [BY4]: Since it is not a road does this apply?

Commented [BY5]: Was this already completed?

Commented [BY6]: I don’t think this is necessary or applicable https://cms.fs.usda.gov/directives/list https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/em_1110-2-1601.pdf https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/em_1110-2-1601.pdf https://aashtojournal.org/2020/05/08/aashto-issues-updated-lrfd-bridge-design-guide/ warning signs, etc.)

o Forest Service standard trail bridge designs may be found here:

https://www.fs.usda.gov/managing-land/trails/trail-management-tools/trailplans#collapse960

4.4.2 Roadway elements: the following roadway elements are required.

o On National Forest Roads Surface course rock grading shall be of 6” depth grading ‘B’ or ‘C’ depending on road gradient.

o Base course rock is not required except as needed for impact panel approaching new structure or in naturally wet areas identified in field data collection. Base Coarse rock should be grading ‘O’ and minimum of B” depth.

o Unless otherwise stated in specific project requirements, clearing is 7’ from the edge of road and whatever is necessary for removal and replacement of structures.

o Project road listed is a double lane road.

Minimum traveled way width is 18’. Travel-way must account for turnouts and curve widening.

5 WORK PRODUCT COMPLETION

All submittals must be accepted by the CO or their delegated representative.

Construction may begin on an individual Contract Line Item (CLIN) once design for that line is accepted. Some CLINs may be in design phase while others have progressed to construction. A pre-construction site meeting is required prior to any site work on a location.

6 GOVERNMENT FURNISHED PROPERTY

The Government will provide the following items:

(i) Templates for plans and/or example plan sets, as applicable

(ii) Reference images of similar structures to demonstrate desired style and materials

(iii) One (1) set of Forest Service Special Project Specifications, to be edited by the Contractor to remove requirements that do not apply to the design

(iv) Flood Study Report for Selected Sites (Recreation Areas) Southern Region – National Forest

Lands, November 2015

(v) Surveys and geotechnical reports completed for Bald River Falls Bridge replacement project

(vi) Plan set for the replacement of Bald River Falls Bridge from which to pull railing designs and other design elements https://www.fs.usda.gov/managing-land/trails/trail-management-tools/trailplans#collapse960 https://www.fs.usda.gov/managing-land/trails/trail-management-tools/trailplans#collapse960

7 PROJECT COSTS

The price of the task order is estimated to be between $900,000 and $1,400,000.

8 SUBMITTAL LIST

(Submittals are samples, drawings (red lines), analysis, product data sheets, cut sheets, warranties, required permits, etc.)

The following shall be submitted on this project:

Title Referenced By Specification No.

Time of Government Approval after Submittal

Traffic Plan FSSS 156 & Traffic Control Clause

2 Weeks

Safety Plan Safety Clause 2 Weeks Hazardous Spill Plan FAR 52.223-3 & FSSS 107 2 Weeks Contractor Quality Control Plan FP-14 153.03 2 Weeks Soil and Erosion Control Plan FSSS 157 2 Weeks Construction Schedule 52.236-15 2 Weeks Concrete Mix Design FSSS 552.03 2 Weeks Precast Concrete Test Results FSSS 552.09 2 Weeks PCI or NPCA Plant Certification FSSS 552.09 2 Weeks

(INSERT APPLICABLE TITLE, REFERENCE, AND TIME)

SHOP DRAWINGS

The following shop drawings shall be submitted on this project:

Title Referenced By Specification No.

Time of Government Approval after Submittal

Stone Veneer – Visual approval of stone prior to construction. Contractor to contact the COR & schedule a meeting for site approval to occur a minimum of 2 weeks prior to use in construction.

FP-14 106.02

Scheduled Visual Site Approval required.

Prefabricated structures. FP-14 104.03, FAR Clause 52.236-21

2 Weeks

MATERIAL CERTIFICATIONS AND TESTING REPORTS

The following material certifications and/or testing reports shall be submitted on this project:

Title Referenced By Specification No.

Culvert Materials Certifications FP-14 106.02, 106.03, 602,707 Aggregate Gradations and Test Reports FP-14 and FSSS 301 Sign Structure Materials Certifications FP-14 106.02, 106.03

SECTION 2

REFERENCE ITEMS NEEDED BY THE CONSULTANT

1 CURRENT FOREST SERVICE SPECIFICATIONS AND STANDARDS

The design firm shall utilize Forest Service adopted standards and specifications, manuals, software, and electronic file formats.

o FHWA Specifications (FP-14) with FS Supplemental Specifications shall be used for transportation improvements. Non-Transportation site improvement specifications shall be approved by the CO.

o Any modification to or deviation from standard specifications or FS provided standard detail drawings shall be reviewed and approved by the CO. Review and approval shall occur within 2 weeks of receipt.

o Ensure that the requirements of any planning and permitting documents are incorporated into the design and specifications.

o Incorporate all project specific specifications, such as equipment washing and spill control as required.

2 COMPUTER DATA COMPATIBILITY

The data format Forest Service presently utilizes which Design Firm shall be required to use for submitting site design data is: Autodesk Civil 3d o Submit electronic versions of plans for final review in .pdf and Autodesk Civil 3d format (current version), unless an alternate format is approved.

o Submit electronic specifications file in Microsoft Word, 8-1/2”x11” format for all reviews and after final review.

o Once submitted, all designs and drawings become the property of the FS to modify and utilize as determined by the FS.

3 PROJECT DESIGN DATA AND STANDARDS

Construction Materials/Methods:

The materials and methods specified for construction will be selected to minimize the initial construction and long-term maintenance cost. Non-typical construction materials and methods must be approved in writing by the CO.