03 SOW and Specs (250714).docx

SECTION C-SPECIFICATIONS

HISTORIC IARGO SPRINGS STAIR and BOARDWALK RENOVATIONS

HURON-MANISTEE NATIONAL FORESTS June 2025

Table of Contents

SECTION C – DESCRIPTION, STATEMENT OF WORK AND SPECIFICATIONS

Iargo Springs Interpretive Site

IOSCO COUNTY, MICHIGAN

PROJECT DESCRIPTION AND LOCATION

1. DESCRIPTION OF WORK

This project consists of site improvements to the Iargo Springs Interpretive Site. This project was originally solicited in 2024. The contract was not awarded at that time. This re-solicitation consists of a modified version of that package. The scope of work for this contract consists of the following: The existing wood stair, from the upper parking area to the lower boardwalk, will be removed and replaced. The upper observation platform decking and railings will be removed and replaced. A stairway and landing near the dam at the lower level will be removed and a railing installed at the end of the remaining landing. An optional bid item will be select boardwalk maintenance.

Please note that this is a Federal Construction project and Davis Bacon wages apply. Please refer to appropriate wage determination.

2. PROJECT LOCATION

Project is located in Iosco County, Michigan.

Driving directions are as follows: From the Huron Shores Ranger Station, travel southeast on south Cedar Street for a few hundred feet. Turn left onto F41 and continue northwest for 3.1 miles. Turn left onto Rea Road, and then turn right after 3.1 miles, where Rea Road turns into Bissonette Road continue Rea Road for another 1.8 miles. Turn right onto East River Road, and continue west for 12.2 miles to reach the parking lot for Iargo Springs, on the north side of River Road, adjacent to Cooke Dam Pond.

3. PERIOD OF PERFORMANCE

The period of performance of this project will be 545 days from the date of the Notice to Proceed. The date for the Notice to Proceed can be negotiated.

Construction of all work items, with the exception of clearing and tree removals, shall be performed efficiently during consecutive workdays. The site will be closed during construction. However, the forest will need sufficient time for public notification. Coordinate the construction schedule with the Government.

The site will be closed to the public during construction. The site will only be closed long term for one recreation season but may be closed intermittently upon Government approval for construction activities such as tree removal.

Bidders are required to provide a project schedule as part of the proposal.

4. ENVIRONMENTAL RESTRICTIONS

No oak trees may be cut between April 15 and July 15 due to the fungus associated with Oak Wilt. The Forest Service is willing to work with the Contractor on a case-by-case basis regarding other clearing needs. Due to the demolition required and the location of the trees needing to be cleared, the Forest Service feels there is minimal impact, if any, on the ability to perform the work around the cutting restrictions.

5. MEASUREMENT AND PAYMENT

BASE BID ITEMS

Bid Item 1: Mobilization

Work to include, but is not limited to, the following:

a. Mobilization of equipment to and from the site.

b. Overhead costs, such as bonding and insurance.

c. Any costs which are not paid under other items of this contract.

Progress payments for mobilization by the lump sum will be paid as follows:

a. Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

b. When 5 percent of the original contract amount is earned from pay items (not including mobilization), 50 percent of the mobilization pay item, or 5 percent of the original contract amount, whichever is less, will be paid.

c. When 10 percent of the original contract amount is earned from pay items (not including mobilization), 100 percent of the mobilization pay item, or 10 percent of the original contract amount, whichever is less, will be paid.

d. Any portion of the mobilization pay item in excess of 10 percent of the original contract amount will be paid after final acceptance.

Bid Item 2: Construction Surveying and Staking

Work to include, but is not limited to, the following:

All surveying and layout work including field staking to ensure that all work is properly located in accordance with the plans and specifications.

Bid Item 3: Soil Erosion & Sedimentation Control

Work to include, but is not limited to, the following:

All Soil Erosion & Sedimentation Control measures required for the project including, but not limited to, items of soil stabilization, stabilized construction access, dust control, silt fence, etc. as well as maintenance and removal of those measures once the site has been stabilized. All measures shall be in accordance with the Contractor's Erosion & Sedimentation Control plan, also included in this bid item, as submitted and approved by the Government. Any final site restoration shall be included in this item as well.

Bid Item 4: Clearing and Grubbing

Work to include, but is not limited to, the following:

The clearing and grubbing required within the construction limits as shown on the plans and adjacent hazard trees.

Bid Item 5: Demolition of the Existing Stairs, Landing, and Boardwalk

Work to include, but is not limited to, the following:

Demolition is to include the complete removal of the wooden stairs, landings, boardwalk, decking, support structure, posts, and foundation from Station 0+00 to the boardwalk designated to remain as indicated by Site Removal Key Note 1 on the Site Demolition Plan. Recycle or dispose of material legally off the project site.

Bid Item 6: Demolition of the Existing Platform and Wooden Retaining Wall

Work to include, but is not limited to, the following:

Demolition is to include the removal of the existing platform, stairs, decking, support structure, posts, foundation and wooden retaining wall as indicated by Site Removal Key Note 3 on the Site Demolition Plan. Recycle or dispose of material legally off the project site. This item also includes the grading/shaping and restoring the disturbed area to a more natural condition.

Bid Item 7: Removal of Existing Deck Boards and Rail on the Observation Platform

Work to include, but is not limited to, the following:

Demolition is to include the removal of the existing decking and railings on the Observation Platform as indicated by Site Removal Key Note 2 on the Site Demolition Plan and the Raised Observation Platform Partial Demolition notes on Sheet C-13. Recycle or dispose of material legally off the project site.

Bid Item 8: Replacement of the Railing System

Work to include, but is not limited to, the following:

Construction of the new railing system for both the Observation Platform and the enclosure of the lower platform as indicated by Site Improvement Key Notes 3 and 5 on the Site Improvements Plan. Work will be in accordance with the plans and details, complete in place.

Bid Item 9: Replacement of the Observation Platform Decking

Work to include, but is not limited to, the following:

Installation of the new decking on the Observation Platform as indicated by Site Improvement Key Note 3 on the Site Improvements Plan. Work will be in accordance with the plans and details, complete in place.

Bid Item 10: Replacement of the Stair and Landing System

Work to include, but is not limited to, the following:

Construction of the new stairway, landings, resting areas, decking, posts, bracing, railings, etc. from Station 0+00 to where the landing ends at the existing boardwalk as indicated by Site Improvement Key Notes 1 and 2 on the Site Improvements Plan. Work will be in accordance with the plans and details, complete in place.

Bid Item 11: Column Foundation

Work to include, but is not limited to, the following:

Installation of the column foundation system for each post including the excavation, compaction, aggregate, concrete, sonotube form, rebar, and connectors as shown in Detail 5 on Sheet C-20, complete in place.

OPTIONAL BID ITEM NO. 1

Optional Bid Item 12: Soil Erosion & Sedimentation Control

Work to include, but is not limited to, the following:

All Soil Erosion & Sedimentation Control measures required for the project including items of soil stabilization, stabilized construction access, dust control, silt fence, etc., as well as maintenance and removal of those measures once the site has been stabilized. All measures shall be in accordance with the Contractor's Erosion & Sedimentation Control plan as submitted and approved by the Government. This item includes only the measures required by the work in Optional Bid Item No. 1.

Optional Bid Item 13: Clearing and Grubbing

Work to include, but is not limited to, the following:

The clearing and grubbing required within the construction limits or causing damage to the boardwalk sections. This item only includes work within Optional Bid Item No. 1.

Optional Bid Item 14: Boardwalk Maintenance

Work to include, but is not limited to, the following:

Optional Bid Item No. 1, Boardwalk Maintenance, consists of maintaining existing boardwalks in locations as directed by the COR in accordance with Section 557 below. This item will be paid in actual quantities by square foot measurement.

Submittals and Notifications Submittal Schedule:

The following required items need to be submitted according to the schedule shown to prevent delays or stoppages of work.

* "For record" assumes that an Item which meets Specifications as written is supplied. Other "equal" products require review and approval by the CO/COR, and may take longer to review.

Notification Schedule:

The following events require an advance written notification to the COR. Notifications may be faxed, mailed, emailed, or hand delivered.

Preface

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

101 – Terms, Format, and Definitions

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

101.01 _National_11_9_2016

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations AFPA — American Forest and Paper Association FSAR — Forest Service Acquisition Regulations MSHA — Mine Safety and Health Administration NESC — National Electrical Safety Code WCLIB — West Coast Lumber Inspection Bureau

(f) Miscellaneous unit abbreviations.

101.03_National_11_9_2016

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

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Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation—(Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S. Department of Agriculture.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Utilization Standards — The minimum size and percent soundness of trees described in Public Works contract specifications or Timber Sale and IRTC contract provisions to determine merchantable timber.

Figure 101-1—Illustration of road structure terms.

102 Bid, Award, and Execution of Contract

102.00_National_11_9_2016

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

103.00_National_11_9_2016

104 - Control of Work

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

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Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

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The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material

105.05_National_6_29_2020

105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. Place excess material safely at government-approved location, at no additional cost to government.

106 - Acceptance of Work

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

106.01 _National_7_18_2017

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is more strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive. The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work; providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

1. Sampling method;

2. Number of samples;

3. Sample transport;

4. Test procedures;

5. Testing laboratories;

6. Reporting;

7. Estimated time and costs; and

8. Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

106.02 _National_11_9_2016 Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

107 - Legal Relations and Responsibility to the Public 107.05_National_7_18_2017 Delete Subsection 107.05.

Delete Subsection 107.05.

108 - Prosecution and Progress

Delete Section 108 in its entirety.

Delete Section 108.

108.00_National_11_9_2016

109 - Measurement and Payment

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

109.00_National_11_9_2016

109.01 _National_2_22_2019 Delete the third paragraph and Table 109-1 of Subsection 109.01 and replace with the following:

109.01 Measurement of Work.

Take measurements as described in Subsection 109.02 unless otherwise modified by the Measurement Subsection of the section controlling the work being performed. Table 109-1 indicates the accuracy required for quantities of the various pay units used in the Schedule of Items. Use this guide to determine the decimal placement in the final payment.

Table 109-1 Decimal Accuracy of Quantities for Final Payment

Exception--Calcium Chloride; Sodium Chloride; Hydrated Lime; Bituminous Materials; Pavements;

Bed Course Materials 0.01

109.02 _National_11_9_2016 Add the following sentence to Subsection 109.02(b):

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

Delete Subsection 109.05 last paragraph and substitute the following:

Delete Subsections 109.05 last paragraph and substitute the following.

The quantities listed in the bid schedule are contract quantity. Payment will be made for work performed and accepted or material furnished according to the contract. No adjustment to payments based on contract quantity will be made, except as defined in Subsection 109.02 (b).

152 - Construction Survey and Staking

Add the following to Subsection 152.04(c):

152.04 General

(c) Material.

Use required stake dimensions and materials. Pre-paint the top 2 inches of all stakes and lath, or mark them with plastic flagging. Use designated colors for paint or flagging. Mark all stakes with a stake pencil that leaves a legible imprint, or with waterproof ink.

Do not use aerosol spray paints.

Use moisture-resistant paper for survey notes. Keep notes in books with covers that will protect the contents and retain the pages in numerical sequence.

Make the following changes to Subsection 152.05:

152.05 Survey and Staking Requirements.

Delete Subsection 152.05(d)(2) and replace with the following:

(d) Slope and reference stakes.

(2) Conventional survey methods. When required, locate slope stakes on designated portions of the road. Locate the slope stake catch points and use them to establish clearing limits and slope stake references.

Mark slope stakes with the station, the amount of cut or fill, the horizontal distance to centerline, and the slope ratios.

Place slope reference stakes at least 10 feet outside the clearing limit and mark with the offset distance to the slope stake. Place sight stakes when required.

Prior to clearing and grubbing operations, move the slope stake outside the clearing limit to the slope reference stake. After clearing and grubbing and before excavation, reset the slope stakes in their original position.

Use the designated method to establish the slope stake catchpoint.

Method I—Computed Method. Use the template information shown in the plans or other Government-provided data to calculate the actual location of the catchpoint. The slope stake “catchpoint distance” provided may be used as a trial location to initiate slope staking. Recatch slope stakes on any section that does not match the staking report within the tolerances established in Table 152-2.

Method II—Catchpoint Measurement Method. Determine the location of slope stake catchpoints by measuring the catchpoint distances shown in the plans or other Government-provided data.

Add the following to Subsection 152.05(e):

(e) Clearing and grubbing limits.

Mark the clearing limits with flagging or tags on trees to be left standing, or on lath. Make markings intervisible, and no more than 90 feet apart.

After establishing clearing limits, move the location line stake outside the clearing limits for station identification purposes, and mark it with horizontal distance to location line.

Replace Table 152-1 with the following:

Table 152-1 Construction Survey and Staking Tolerances Table 152-1 Construction Survey and Staking Tolerances (1)

Control points set from existing Government control points- Tolerance Class A ±0.03 feet (±10 millimeters) ±0.01 feet × N (±3 millimeters × N )(2)

(±50 millimeters) ±0.16 feet (±50 millimeters)

(±20 millimeters) ±0.06 feet (±20 millimeters)

(±50 millimeters) ±0.16 feet ±50 millimeters)

(±50 millimeters) ±0.06 feet (±20 millimeters)

(±20 millimeters) ±0.03 feet (±10 millimeters)

(±20 millimeters) ±0.03 feet (±10 millimeters)

(±10 millimeters)(5) ±0.03 feet (±10 millimeters)

(±10 millimeters)(5) ±0.03 feet (±10 millimeters)

(±300 millimeters)

(±50 millimeters) ±0.03 feet (±10 millimeters)

(±50 millimeters) ±0.03 feet (±10 millimeters)

Table 152-1 Construction Survey and Staking Tolerances (continued) (1)

(±20 millimeters) ±0.16 feet × N (±20 millimeters × N )(2)

(±300 millimeters) ±0.50 feet (±150 millimeters)

Centerline points including (PC), (PT), (POT),(POC), and references–Tolerance Class B (7) ±0.16 feet (±20 millimeters) ±0.16 feet (±20 millimeters)

(±50 millimeters) ±0.16 feet ±50 millimeters)

(±150 millimeters) ±0.16 feet (±20 millimeters)

(±600 millimeters)

(±50 millimeters) ±0.16 feet (±10 millimeters)

Roadway finish grade stakes–Tolerance Class B (7) ±0.50 feet (±50 millimeters) ±0.16 feet (±10 millimeters)

(1) At statistical 95 percent confidence level. Tolerances are relative to existing Government control points.

(2) N is the number of instrument setups.

(3) Centerline points: PC - point of curve, PT - point of tangent, POT - point on tangent, POC - point on curve.

(4) Take the cross-sections normal to the centerline ±1 degree.

(5) Bridge control is established as a local network and the tolerances are relative to that network.

(6) Includes paved ditches.

(7) Tolerance Class B for Very Low Volume Roads with an aggregate or native finished surface.

153 - Contractor Quality Control

Delete Subsection 153.02 and replace with the following:

153.02 Qualifications.

Submit the following for approval with the quality control plan:

(a) Quality control manager (QCM).

Furnish a QCM who has at least 2 years’ experience in construction, inspector, quality control and material testing on construction projects of similar type and scope.

(b) Testers.

Provide testers with at least one year experience in the type of sampling and testing required, and with one of the following for the type of sampling and testing performed:

(1) NICET Level II certification in highway material or equivalent state or industry certification;

(2) Certification by a regional certification program (such as Western Alliance for Quality Transportation Construction (WAQTC), Northeast Transportation Technician Certification Program (NETTCP), Southeast Task Force for Technician Training and Qualification (STFTTQ), or Multi Regional Training and Certification (M- TRAC)); or

(3) At least one year employment by an AASHTO accredited laboratory performing equivalent sampling and testing.

Add the following paragraph to the end of Subsection 153.03(b):

153.03 Quality Control Plan.

(b) Quality Control Procedures.

Submit written proposals for approval of alternate AASHTO or State approved test methods. Alternate methods may be allowed based on documented equivalence to the specified method.

Delete Subsection 153.07 and replace with the following:

153.07 Records and control charts.

Maintain complete testing and inspection records by pay item number and make them accessible to the CO.

155 - Schedules for Construction Contracts

Delete Section 155 in its entirety.

Delete Section 155.

156 - Public Traffic

Delete Section 156 in its entirety and replace with the following:

156. – Public Traffic

156.01 Description

This work consists of controlling and protecting public traffic adjacent to and within the project.

156.02 Material

Conform to the MUTCD and the following Sections and Subsections:

Construction Requirements

156.03 General

Accommodate traffic according to MUTCD. Perform work in a manner that ensures safety and convenience of the public. Keep existing roads open to all traffic during improvement work, and maintain them in a condition that will adequately accommodate traffic. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

Post construction signs and traffic control devices in conformance with MUTCD and Forest Service EM 7100-15. All required signs will be in place and approved prior to beginning work on project.

156.04 Temporary Traffic Control

Install and maintain temporary traffic control devices adjacent to and within the project as required and in accordance with the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install required traffic control devices before the start of construction operations.

(b) Install only those traffic control devices needed for each stage or phase.

(c) Relocate temporary traffic control devices as necessary.

(d) Remove devices that no longer apply to the existing conditions.

(e) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(f) Keep temporary traffic control devices clean.

(g) Remove all temporary traffic control devices upon contract completion or when approved.

156.05 Temporary Closures.

Recreation site may be closed during construction phases. The maximum consecutive days the site may be closed to public traffic shall be 271. Maintain traffic control devices during closure period. Appropriate barricades and signs will be erected and maintained.

Prior to closing the site during construction, give written notice to the CO/COR at least 10 business days in advance.

156.06 Acceptance.

Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment 156.07 Do not measure Public Traffic for payment. Payment for contract work is provided indirectly. See Subsection 109.05.

157 - Soil Erosion and Sediment Control

Delete Subsection 157.04 and replace with the following:

157.04 General.

Ten (10) days prior to the start of construction, submit a written plan according to subsection 104.03 with all necessary permits that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Do not begin on any particular phase of work until the necessary controls for that work item has been implemented. Do not modify the type, size, or location of any control without approval.

When erosion control measures are not functioning as intended, take corrective action to eliminate or minimize pollutants in storm water discharges from the project.

170 – Weed Disease Prevention

170. – Weed Disease Prevention Description This work consists of washing and treating construction equipment to remove seeds, plants, and plant fragments from equipment before and after the equipment is used on National Forest System Lands.

General Requirements Use a high-pressure washing system to wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt and debris from construction equipment.

Measurement & Payment Weed Disease Prevention will not be measured or paid for separately. Payment for work associated with this item shall be included in payment for Mobilization.

201 - Clearing and Grubbing

Construction Requirements

Delete the first sentence of Subsection 201.06 and replace the following:

201.06 Disposal.

Merchantable timber is Government property, and shall be bucked into firewood size pieces, and stacked on site, as directed by the COR.

203 - Removal of Structures and Obstructions

Delete Subsection 203.04(a) and replace with the following:

203.04 (a) Submittals Submit a removal plan at least 21 days prior to beginning any removal items. Include the following:

(1) Methods and equipment to be used;

(2) Measures to be used for protecting the environment, public, adjacent property, and workers;

(3) Methods to keep debris out of the waterway

Delete Subsection 203.04(b) and replace with the following:

203.04 (b) General Saw cut sidewalks, curbs, pavements, and structures when partial removal is required.

Construct structurally adequate debris shields to contain debris within the construction limits. Do not allow debris to enter waterways, travel lanes open to public traffic, or areas designated not to be disturbed.

Handle material with lead paint contamination according to Subsection 563.05.

Raze and remove buildings, foundations, pavements, culverts, sidewalks, curbs, fences, structure, and other obstructions interfering with the work and not designated to remain.

204 - Excavation and Embankment

Delete Section 204 in its entirety and replace with the following.

204. — EXCAVATION AND EMBANKMENT

204.00_National_11_4_2016

Description

204.01 This work consists of excavating material and constructing embankments. This work also includes furnishing, hauling, stockpiling, placing, disposing, sloping, shaping, compacting, and finishing earthen and rocky material.

204.02 Definitions.

(a) Excavation. Excavation consists of the following:

(1) Roadway excavation. Material excavated from within the right-of-way or easement areas, except subexcavation covered in Subsection 204.02(a)(2) and structure excavation covered in Sections 208 and

209. Roadway excavation includes all material encountered regardless of its nature or characteristics.

(2) Subexcavation. Material excavated from below subgrade elevation in cut sections or from below the original ground-line in embankment sections. Subexcavation excludes the work required by Subsection

204.05 or 204.06.

(3) Borrow excavation. Material used for embankment construction that is obtained from outside the roadway prism. Borrow excavation includes unclassified borrow, and topping.

(b) Embankment construction. Embankment construction consists of placing and compacting roadway or borrow excavation. This work includes:

(1) Preparing foundation for embankment;

(2) Constructing roadway embankments;

(3) Benching for side-hill embankments;

(4) Constructing dikes, ramps, mounds, and berms; and

(5) Backfilling subexcavated areas, holes, pits, and other depressions.

(c) Conserved topsoil. Excavated material conserved from the roadway excavation and embankment foundation areas that is suitable for growth of grass, cover crops, or native vegetation.

(d) Waste. Excess and unsuitable roadway excavation and subexcavation that cannot be used.

Material

204.03 Conform to the following Subsections:

Construction Requirements

204.04 Preparation for Roadway Excavation and Embankment Construction. Clear the area of vegetation and obstructions according to Sections 201 and 203.

Road pioneering, slash disposal, and grubbing of stumps may proceed concurrently with excavation and embankment. Maintain drainage during pioneering operations.

204.05 Conserved Topsoil. When designated, conserve topsoil from roadway excavation and embankment foundation areas. Stockpile conserved topsoil in low windrows immediately beyond the rounding limits of cut and embankment slopes or in other approved locations. Separate conserved topsoil from other excavated material. When designated, place conserved topsoil on completed slopes according to Section 624.

204.06 Roadway Excavation. Excavate as follows:

(a) Rock cuts. Blast rock according to Section 205. Excavate rock cuts to 6 inches (150 millimeters) below subgrade within the roadbed limits. Backfill to subgrade with topping or other suitable material. Compact the material according to Subsection 204.11.

(b) Earth cuts. Scarify earth cuts to 6 inches (150 millimeters) below subgrade within the roadbed limits. Compact the scarified material according to Subsection 204.11.

(c) Pioneer Roads. Conduct excavation and placement operations so material to be treated under Section 201 will not be incorporated into the roadway unless specified in the slash treatment method. Maintain drainage during pioneering operations.

Remove snow and ice in advance of the work and deposit beyond the roadway limits in a manner that will not waste material or generate sediment. Do not incorporate snow and ice into embankments. Place snow or ice in a manner to prevent resource damage.

(d) Drainage Feature. Drainage feature includes construction of all ditches, minor channel changes, drainage dips, catch basins, surface water deflectors, and other minor drainage structures. Compact the material according to Subsection 204.11. Excavate on a uniform grade between control points.

Do not disturb material and vegetation outside the construction limits. Retrieve material deposited outside the construction limits. Dispose of unsuitable or excess excavation material according to Subsection 204.14. Replace shortage of suitable material caused by premature disposal of roadway excavation.

Shape to drain and compact the work area to a uniform cross-section at the end of each day's operations.

204.07 Subexcavation. Excavate material to the required limits. Dispose of unsuitable material according to Subsection 204.14. Take cross-sections according to Section 152. Backfill subexcavated area with suitable material in horizontal layers not exceeding 12 inches (300 millimeters) in compacted thickness and compact according to Subsection 204.11. Prevent unsuitable material from mixing with suitable backfill material.

204.08 Borrow Excavation. Use suitable roadway excavation in embankment construction. Do not use borrow excavation when it results in excess roadway excavation. Deduct excess borrow excavation from the total borrow excavation quantity.

Obtain borrow source approval according to Subsection 105.02. Develop and restore borrow sources according to Subsections 105.03 and 105.06. Do not excavate beyond the established limits. When applicable, shape the borrow source to permit accurate measurements when excavation is complete.

204.09 Preparing Foundation for Embankment Construction. Prepare foundation for embankment construction as follows:

(a) Embankment over natural ground. Remove topsoil and break up the ground surface to a minimum depth of 6 inches (150 millimeters) by plowing or scarifying. Compact the ground surface according to Subsection 204.11.

(b) Embankments over an existing asphalt, concrete, or gravel road surface. Scarify gravel roads to a minimum depth of 6 inches (150 millimeters). Scarify or pulverize asphalt and concrete roads to 6 inches (150 millimeters) below the pavement. Reduce particles to a maximum size of 6 inches (150 millimeters) and produce a uniform material. Compact the surface according to Subsection 204.11.

(c) Embankment across ground not capable of supporting equipment. Dump successive loads of embankment material in a uniformly distributed layer to construct the lower portion of the embankment. Limit the layer thickness to the minimum depth necessary to support the equipment.

(d) Embankment on an existing slope steeper than 1V:3H. Cut horizontal steps in the existing slope to a sufficient width to accommodate placement and compaction operations and equipment. Step the slope as the embankment is placed and compacted in layers. Begin each step at the intersection of the original ground and the vertical cut of the previous step.

204.10 Embankment Construction. Incorporate only suitable roadway excavation material into the embankment. When the supply of suitable roadway excavation is exhausted, furnish unclassified borrow to complete the embankment. Obtain written approval before beginning construction of embankments over 6 feet (2 meters) high at subgrade centerline. Construct embankments as follows:

(a) General. At the end of each day's operations, shape to drain and compact the embankment surface to a uniform cross-section. Eliminate ruts and low spots that could hold water.

During all stages of construction, route and distribute hauling and leveling equipment over the width and length of each layer of material.

Compact embankment side slopes with a tamping foot roller, by walking with a dozer, or by over-building the fill and then removing excess material to the final slope line. For slopes 1V:1¾H or steeper, compact the slopes as embankment construction progresses.

(b) Embankment within the roadway prism. Place embankment material in horizontal layers not exceeding 12 inches (300 millimeters) in compacted thickness. Incorporate oversize boulders or rock fragments into the 12-inch (300-millimeter) layers by reducing them in size or placing them individually as required below. Compact each layer according to Subsection 204.11 before placing the next layer.

Material composed predominately of boulders or rock fragments too large for 12-inch (300-millimeter) layers may be placed in layers up to 24 inches (600 millimeters) thick. Incorporate oversize boulders or rock fragments into the 24-inch (600-millimeter) layer by reducing them in size or placing individual rock fragments and boulders greater than 24 inches (600 millimeters) in diameter as follows:

(1) Reduce rock to less than 48 inches (1200 millimeters) in the largest dimension;

(2) Distribute rock within the embankment to prevent nesting;

(3) Place layers of embankment material around each rock to a depth not greater than that permitted above. Fill voids between rocks; and

(4) Compact each layer according to Subsection 204.11(a) before placing the next layer.

(c) Embankment outside of roadway prism. When placing embankment outside the staked roadway prism, place material in horizontal layers not exceeding 24 inches (600 millimeters) in compacted thickness. Compact each layer according to Subsection 204.11.

204.11 Compaction. Compact the embankment using one of the following methods as specified.

(a) Placement Method 1. Use AASHTO T 27 to determine the quantity of material retained on a No. 4 (4.75- millimeter) sieve. Compact as follows:

(1) More than 80 percent retained on a No. 4 (4.75-millimeter) sieve. Adjust the moisture content to a level suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Compact each layer of material full width with one of the following and until there is no visible evidence of further consolidation:

(a) Four roller passes of a vibratory roller having a minimum dynamic force of 40,000 pounds (180 kilonewtons) impact per vibration and a minimum frequency of 1000 vibrations per minute;

(b) Eight roller passes of a 20-ton (20-metric ton) compression-type roller; or

(c) Eight roller passes of a vibratory roller having a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration and a minimum frequency of 1000 vibrations per minute.

Increase the compactive effort for layers deeper than 12 inches (300 millimeters) as follows:

· For each additional 6 inches (150 millimeters) or fraction thereof, increase the number of roller passes in Subsection 204.11(a)(1)(a), by four passes; or

· For each additional 6 inches (150 millimeters) or fraction thereof, increase the number of roller passes in Subsection 204.11(a)(1)(b) and (c), by eight passes.

(2) 50 to 80 percent retained on a No. 4 (4.75-millimeter) sieve. Classify the material according to AASHTO M 145. Adjust the moisture content of material classified A-1 through A-5 to a moisture content suitable for compaction.