3. Supplemental Specifications.pdf

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

For

CHAMBERS CREEK TRAIL

BRIDGE REPAIR

TRAIL 6E12, MP 2.1

U.S.D.A. FOREST SERVICE

PLUMAS NATIONAL FOREST

Prepared by:

MARCH 2024

3/14/2025

Table of Contents

Table of Contents Preface 101 - Terms¸ Format¸ and Definitions 102 - Bid¸ Award¸ and Execution of Contract 103 - Scope of Work 104 - Control of Work 105 - Control of Material 106 - Acceptance of Work 107 - Legal Relations and Responsibility to the Public 108 - Prosecution and Progress 109 - Measurement and Payment 151 - Mobilization 152 - Construction Survey and Staking 153 - Contractor Quality Control 155 - Schedules for Construction Contracts 156 - Public Traffic 157 - Soil Erosion and Sediment Control 203 - Removal of Structures and Obstructions 210 – Trail Work 571 - Prefabricated Bridges 605 – Underdrains, Sheet Drains, and Pavement Edge Drains

Preface Preface_wo_12_20_2022

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 101.01_National_11_9_2016

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

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

101.03_National_11_9_2016

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.

MP — milepost location ppm — parts per million volume

STA station location

101.04_National_1_22_2020

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

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.

Add Figure 101-1—Illustration of road structure terms:

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 103.00_National_11_9_2016

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

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work 104.00_National_11_9_2016

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

104.06_National_11_9_2016

Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

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 105.02_National_11_1_2016

Add the following to Subsection 105.02(a):

105.02(a) Government-provided sources.

Government-provided sources for this project are identified as follows:

(1) Government-provided mandatory sources.

Pay Item Description Material source number or name Waste Site Location Onsite as Approved by CO

(2) Government-provided optional sources for this project are identified as follows:

Pay Item Description Material source number or name 21001 Trailway Embankment Location Onsite as Approved by CO

105.02_National_7_18_2017

Add the following to Subsection 105.02 (a):

105.02 (a) Government-provided sources.

Complete any pit or quarry development specified for a designated source, even when material is not obtained from the source.

105.02_National_11_1_2016

Add the following to Subsection 105.02c:

105.02(c) Contractor-located sources.

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work shall be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area.

A Forest Service weed specialist will inspect proposed sources to determine weed-free status. Provide the Contracting Officer written notification of proposed material sources 14 days prior to use. Written approval of the specific source will be provided to the contractor by the CO. If weed species are present in the proposed source, appropriate mitigation measures may allow conditional use of the source as required by the Contracting Officer.

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 106.01_National_7_18_2017

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.

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.

106.07_National_11_1_2016

Delete Subsection 106.07.

106.07 Partial and Final Acceptance.

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 108.00_National_11_9_2016

Delete Section 108 in its entirety.

Delete Section 108.

109 - Measurement and Payment 109.00_National_11_9_2016

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

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

Pay Item Level of Precision Linear Foot 1

Exception--Timber, Steel, and concrete Piles 0.1 Station 0.1 Mile 0.01 Square Foot 0.1 Square Yard 1 Each 1 Acre 0.01 Gallon 1 M-Gals. 0.1 Cubic Yard 1

Exception--Structure Excavation; Sheathing Materials; Bedding, Bed Course, and Backfill Materials; Gabions;

0.1

Exception--Concrete; Masonry 0.01 Pound 1 Ton 0.1

Exception--Calcium Chloride;

Sodium Chloride; Hydrated Lime;

Bituminous Materials; Pavements;

Bed Course Materials

0.01

Hour 0.1

MFBM 0.01

Station Yard 1 Cubic Yard Mile 1 Ton Mile 1

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.

151 - Mobilization

Description

151.01_Forest_11_30_2018

Add the following to Subsection 151.01:

151.01

Preparatory work shall include cleaning of all equipment before entering National Forest System Lands. The contractor is required to clean all construction equipment prior to entry on National Forest System Lands. This cleaning shall remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Only construction equipment inspected by the Contracting Officer will be allowed to operate within National Forest System Lands. All subsequent move-ins of equipment shall be treated the same as the initial move-in. Truck beds and dump boxes hauling to the project site must also be cleaned prior to entering the work area.

Prior to initial move-in, the Contractor shall make all construction equipment available for inspection by the Contracting Officer at an agreed upon location. The Contractor shall provide the Contracting Officer at least 72 hours advance notification when equipment is ready for inspection.

152 - Construction Survey and Staking 152.00_National_12_12_2016

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)

Staking Phase Horizontal Vertical

Control points set from existing Government control points- Tolerance Class A

±0.03 feet (±10 millimeters)

±0.01 feet × N

(±3 millimeters × N )(2)

Mapping, topography, and cross-section Points- Tolerance Class A

±0.16 feet (±50 millimeters)

±0.16 feet (±50 millimeters)

Centerline points (3) including (PC), (PT), (POT),(POC), and references- Tolerance Class A

±0.06 feet (±20 millimeters)

±0.06 feet (±20 millimeters)

Slope-stake and slope-stake references- Tolerance Class A (4)

±0.16 feet (±50 millimeters)

±0.16 feet ±50 millimeters)

Culverts, ditches, and minor drainage structures stakes- Tolerance Class A

±0.16 feet (±50 millimeters)

±0.06 feet (±20 millimeters)

Retaining walls stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Curb and gutter stakes ±0.06 feet (±20 millimeters)

±0.03 feet (±10 millimeters)

Bridge substructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Bridge superstructures stakes ±0.03 feet (±10 millimeters)(5)

±0.03 feet (±10 millimeters)

Clearing and grubbing limit stakes- Tolerance Class A

±1.00 feet (±300 millimeters)

Roadway subgrade finish stakes- Tolerance Class A (6)

±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

Roadway finish grade stakes (6) ±0.16 feet (±50 millimeters)

±0.03 feet (±10 millimeters)

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

Staking Phase Horizontal Vertical

Control points set from existing Government control points –Tolerance Class B (7)

±0.16 feet (±20 millimeters)

±0.16 feet ×

(±20 millimeters × )(2)

Mapping, topography, and cross-section points–Tolerance Class B (7)

±1.00 feet (±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)

Slope-stake and slope-stake references– Tolerance Class B (7)

±0.50 feet (±50 millimeters)

±0.16 feet ±50 millimeters)

Culverts, ditches, and minor drainage structures stakes–Tolerance Class B (7)

±0.50 feet (±150 millimeters)

±0.16 feet (±20 millimeters)

Clearing and grubbing limit stakes–Tolerance Class B (7)

±2.00 feet (±600 millimeters)

Roadway subgrade finish stakes–Tolerance Class B (7)

±0.50 feet (±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.

152.02_Forest_11_21_2019

N

N

Add the following to Subsection 152.05:

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 152-1.

Method II – Projected Catchpoint L-line reference. Stake information such as amount of cut or fill shall be provided in the government-provided staking notes. Slope stake catchpoints shall be located by measuring distances from the established centerline (L-line) location. Measurements and stake locations shall be along the cross section line perpendicular to the centerline (L-line) alignment. If field conditions do not match staking data stake according to method I.

153 - Contractor Quality Control 153.02_National_11_1_2016

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.

153.03_National_11_1_2016

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.

153.10_Regional_5_31_2018

Add the following Subsection:

153.04 (2) (a) Submittal Log At a minimum the contractor shall provide project submittals as shown on the Submittal Log below. Submittal requirements are listed in the Standard Specifications, Supplemental Specifications, and Plans.

Submittal Log

Log No.

Incidental to Pay Item(s) Description of Submittal

Type of Submittal

Requirement found in Specification No.

/Drawings

Additional Specification References

1 151 Weed Free Material Source Certification

Material Certification FSSS 105.02(c)

2 151 Spill Prevention, Control, and Countermeasure (SPCC) Plan Plan 107.10

3 151 Contractor Quality Control Plan Plan 153.02

4 151 Traffic Control Plan Plan FSSS 156.03

5 157 Dewatering and Soil Erosion and Pollution Control Plan Plan FSSS 157.04 Drawings

6 203 Bridge Removal and Disposal Plan Plan 203.05(d)(1)

7 203 Hazardous Material Disposal Certification Certification 203.05(d)(2)

8 552 Structural Concrete: Mix Design Mix Design 552.03 Drawings

19 552 Structural Concrete: Testing Test Results 552.20 106, Drawings

10 552 Reinforcing Steel (Specified Under 554, Paid Under 552)

Material Certification 709.01 Drawings

11 552 Reinforcing Steel (Specified Under 554, Paid Under 552) Order List 554.03 554, 709, Drawings

12 552 Reinforcing Steel (Specified Under 554, Paid Under 552)

Production Certification 554.10 554, Drawings

13 571 Steel Bridges: Design Calculations & Shop Drawings

Calculations & Plan FSSS 571.04

14 571 Steel Bridges: Certification structural steel, fasteners and hardware Certifications FSSS 571.05

15 571 Steel Bridges: Timber Material Certification

Fabrication Certification FSSS 571.05

16 571 Steel Bridges: AISC Steel Certification Fabrication Certification FSSS 571.05

17 571 Steel Bridges: Bridge Welding Certifications Certifications FSSS 571.05

18 571 Steel Bridges: List of bridge components, hardware and fasteners Materials List FSSS 571.05

19 571 Steel Bridges: Erection instructions and drawings Plan FSSS 571.05

20 622 Helicopter Transport Plan Plan Drawings

153.07_National_11_1_2016

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 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

156 - Public Traffic 156.00_National_2_5_2019

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

Section 156. – PUBLIC TRAFFIC Description

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

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Permanent Traffic Control 633

Traffic Signing and Marking Material 718

Concrete Barriers and Precast Guardwalls 618

Temporary plastic fence 710.11

Construction Requirements

156.03 General. Accommodate traffic according to MUTCD, approved traffic control plan and this section. Perform work in a manner that ensures safety and convenience of the public. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. Delays may not exceed 30 minutes at any one time followed by an open period of no less than 10 minutes. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

Submit traffic control plan at least 30 days prior to intended use. Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a traffic control plan has been approved.

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.

If the Contractor agrees in writing to allow public traffic to use a new road being constructed prior to completion, it will be considered an existing road for traffic control purposes.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

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

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

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

(d) Relocate temporary traffic control devices as necessary.

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

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

(g) Keep temporary traffic control devices clean.

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

(i) When required, use flaggers certified by the American Traffic Safety Services Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retroreflective sheeting on flagger paddles.

Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Trail segments may be closed as shown in Table 156-1. The maximum consecutive days of closure shall be followed by a minimum number of consecutive days open to traffic as shown. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing trails during construction, give written notice to the Contracting Officer at least 10 days in advance.

Table 156-1 Temporary Trail Closures

Trail Number

From Terminus

To Terminus

Maximum Consecutive Days of Closure

Minimum Consecutive Days Open

6E12 Trailhead MP 2.1 7 N/A

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 157.04_National_11_1_2016

Delete Subsection 157.04 and replace with the following:

157.04 General.

Thirty (30) 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 work until the necessary controls for that particular phase of work have 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.

Delete the first two paragraphs and replace with the following:

Submit a Dewatering Plan along with a Soil Erosion and Pollution Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the CO for approval.

Reflect in the Dewatering Plan and Soil Erosion and Pollution Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

(c) The location and type of temporary controls to be implemented during construction. The following pollution prevention measures are a requirement for endangered species protection:

i. All equipment will be inspected for leaks prior to commencing work each day and any identified problems corrected before equipment is allowed to operate.

ii. Fueling, maintenance and staging of equipment will occur in designated areas away from water bodies.

iii. A spill containment kit will be available onsite at all times during construction, and proper notification procures will be in place in the event of a hazardous release.

iv. Absorbent pads will be placed beneath fuel tanks during fueling and maintenance. Pads will also be placed under any pumps while operating.

(d) For work in stream channels with running water a detailed dewatering plan is required. The following dewatering, fish salvage, and turbidity control measures are a requirement for endangered species protection:

i. All instream work must be completed during the designated instream fisheries work window.

ii. The Contracting Officer shall be notified at least 72 hours in advance of commencing dewatering and re-watering activities.

iii. The Contractor shall coordinate and participate in the fish salvage operations in cooperation with the Contracting Officer’s fisheries biologist(s). The Contracting Officer will provide fisheries biologists and capture equipment to lead the fish salvage effort. The Contractor shall provide pumps, equipment, labor and resources during the fish salvage operations to ensure fish passage and flow conditions per the Drawings and specifications.

iv. Work area isolation and fish capture activities will occur during periods of the coolest air and water temperatures possible, normally early in the morning, and during conditions appropriate to minimize mortality for the species present. Electrofishing during cooler water temperatures would reduce the stress levels of salmonids.

v. Flows will be completely diverted around the instream work site through a combination of pumping and/or pre-approved, alternative methods and returned to the channel below the project area. Pump screen openings shall not exceed 3/32 or 0.0938 inches (2.38 mm). If the diversion inlet is not screened, the diversion outlet will be placed in a location that facilitates safe reentry of fish into the stream channel.

vi. Flow diversion structures will be constructed with sand bags covered with plastic sheeting. Cofferdams, portable bladder dams, or other technologies constructed of non-erodible material may also be used to contain stream flow.

vii. Once channel rehabilitation is complete, the streambed will be washed and sediment-laden water within the isolation area should be pumped to the forest floor and not allowed to return to the stream.

Once the isolated streambed is washed, water will be slowly released back into the channel to minimize sediment suspension, reaching full streamflow over a period of at least one hour.

(e) For work in stream channels without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

203 - Removal of Structures and Obstructions

Add the following to Subsection 203.03:

203.03 Salvaging Material.

Add the following to the last paragraph:

As shown on the drawings or at a location approved by the CO.

203.04_National_11_2_2016

Make the following changes to Subsection 203.04(b):

203.04 (b) General.

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

Remove structures and obstructions in the roadbed to 12 inches (300 millimeters) below subgrade elevation. Remove structures and obstructions outside the roadbed to 12 inches (300 millimeters) below finished ground or to the natural stream bottom.

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

When abandoning an existing culvert pipe, remove the upstream and downstream portion of the culvert to within 12 inches (300 millimeters) of the subgrade or embankment slope. Ensure the abandoned pipe is at least 48 inches (1200 millimeters) from a new culvert or structure. Seal the abandoned culvert ends with a tight-fitting plug of concrete at least 6 inches (150 millimeters) thick. Ensure the structure does not entrap water.

203.05_National_9_10_2018

Add the following to Subsection 203.05:

203.05 Disposing of Material.

(e) Windrowing Construction Slash. Place construction slash outside the roadway in neat, compacted windrows approximately parallel to and along the toe line of embankment slopes. Do not permit the top of the windrows to extend above subgrade. Use construction equipment to matt down all material in a windrow to form a compact and uniform pile. Construct breaks of at least 15 feet at least every 200 feet in a windrow. Do not place windrows against trees.

(f) Scattering. Scatter construction slash in designated areas without damaging trees. Limb all logs. Place logs and stumps away from trees, positioned so they will not roll, and are not on top of one another. Limb and scatter other construction slash to reduce slash concentrations. When scattering for erosion control, place construction slash as flat as practicable on the completed slope.

(g) Chipping. Use an approved chipping machine to chip slash longer than 3 feet. Deposit chips on embankment slopes or outside the roadway to a loose depth less than 6 inches. Minor amounts of chips or ground woody material may be permitted within the roadway if they are thoroughly mixed with soil and do not form a layer.

(h) Debris Mat. Use tree limbs, tops, cull logs, split stumps, wood chunks, and other debris to form a mat upon which construction equipment is operated. Place stumps upside down and blend stumps into the mat.

(i) Decking. Remove brush from designated log deck areas. Limb and top logs.

Logs not meeting the Utilization Standards described in Subsection 201.04(c) shall be cut to lengths less than 8 feet and decked in designated log deck location.

Merchantable timber not associated with an existing timber sale shall be cut to length meeting the Utilization Standards described in Subsection 201.04(c).

Deck logs so that logs are piled parallel to one another; can be removed by standard log loading equipment; will not damage standing trees; will not interfere with drainage, and will not roll. Keep logs in log decks free of brush and soil.

(j) Removal to designated locations. Remove construction slash to designated locations.

(k) Piling. Pile construction slash in designated areas. Place and construct piles so that if the piles are burned, the burning will not damage remaining trees. Keep piles free of dirt from stumps.

Make the additional following changes to Subsection 203.05:

203.05 Disposing of Material.

Modify the following:

(a) Remove from project. Add the following:

All materials designated for removal become the property of the Contractor and are to be disposed of by removing off of Forest Service Lands in accordance with all local, state and federal requirements. Treated timber shall be removed from the site. Hardware shall be removed from the site.

(b) Burn. Delete this section.

(c) Bury. Delete this section.

Add the following:

(l) Placing Slash on Embankment Slopes. Place construction slash on completed embankment slopes or scatter as directed by the CO to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Priority for use of available slash is for: (1) covering final rehab of staging area; (2) embankment of finished trail; (3) adjacent to stream on loose soil. All slash material not suitable for embankment slopes shall be scattered in staging area or outside of project boundary.

(m) Untreated Timber. Untreated timber shall be sawn and placed in burn piles, as directed by CO.

210 – Trail Work Description

210.01 Work. This work consists of constructing trail bridge approaches, including excavation and embankment.

Includes excavation, embankment, and backfill construction required to shape and finish the trailbed, backslopes and fill slopes. Use all suitable material salvaged from the excavation meeting Subsection 704.06, Unclassified Borrow for embankment construction and backfill.

Materials

210.02 Conform to the following Subsections:

Unclassified Borrow 704.06

Construction Requirements

210.03 Trail Approach Excavation and Embankment. Minor deviations in vertical alignment will be permitted 10 feet from either end of the bridge as long as the transition from the end of the bridge is smooth and approved by the CO.

Such adjustments shall not be considered as changes.

Conserve and use all suitable material for specified work. Conserve excess excavated rock suitable for specified project work and use in place of materials from designated sources.

Remove all duff and debris from within trailway limits and uniformly spread outside the clearing limits, not more than 4 inches in depth (unless otherwise SHOWN ON THE PLANS). Do not obstruct drainage from the trail surface.

Place excess and unsuitable excavation beyond the downslope edge of the trailbed. Do not obstruct drainage and spread to a depth not exceeding 4 inches. This includes any material removed in the grubbing operation and deposited in the same area.

Place rocks over 4 inches in greatest dimension not used in construction beyond the hinge point on the downslope side.

Place rocks so that the tops are at least 6 inches lower than the trailbed surface. Ensure that no blockage of drainage or creation of a windrow effect occurs.

210.05 Trailway Excavation and Embankment. Construct embankments with suitable compacted material. Fill holes, and cut high points to provide a uniform trailbed finish. Compact all disturbed soil within the trailbed area.

Remove any rock within or above the backslopes that is unstable. Use or dispose of rock in accordance with Subsection 203.03.

Leave the finished slope in a uniform and roughened condition.

210.06 Compaction. Place material in horizontal layers not exceeding 6 inches prior to compaction except when the material contains rock more than 4 inches in diameter, in which case layers may be of sufficient thickness to accommodate the material involved. Adjust the moisture content of the material to a moisture content suitable for compaction. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases.

210.07 Trailbed Finish. Fill holes with suitable material, compact, and cut high points to provide a uniform trailbed finish.

Measurement

210.08 Measure the Section 210 items listed in the bid schedule according to Subsection 109.02.

Payment

210.09 The accepted quantities will be paid at the contract price per unit of measurement for the Section 210 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

571 - Prefabricated Bridges

Add the following Section 571:

Description

571.01 Work.

571.01 This work consists of designing, fabricating, and delivering a prefabricated modular bridge superstructure.

Materials

571.02 Requirements.

Furnish materials that meet the requirements specified in the following sections of the Federal Highway Administration Standard Specifications for Construction of Road and Bridges on Federal Highway Projects (FP-14).

Structural Metal 717

Steel Structures 555

Timber Structures 557

Material for Timber Structures 716

Concrete compressive strength, structural steel tensile strength, finish and designation, timber species, grade, and treatment, and other material specifications shall be as shown on the Plans or if not listed in the Plans, take them from the manufacturer’s drawings, and have them approved by the CO prior to fabrication.

571.03 Design Requirements.

Design in accordance with the AASHTO “LRFD Guide Specifications for Design of Pedestrian Bridges”, December 2009 edition. In addition to the AASHTO specified loading, the bridges shall be designed for a for 310 psf snow load with concurrent 20 psf skier live load with load factors as specified in the Forest Service Handbook.

The Trail Bridge shall be designed as an H-Section configuration Truss structure having one (1) diagonal per panel and where the floor beams are placed up inside the trusses and attached to the truss verticals. Fabricate the top and bottom chords and diagonals from square or rectangular tubing. Provide a bridge width of six (6) feet measured from inside face of structural elements at the deck level. Provide a height of 54” from the top of the deck to the top of the top chord at the end of the truss. Provide exterior safety rails spaced as shown on the Plans.

Fabricate truss members and bracing components from high strength, low alloy, atmospheric corrosion resistant steel.

Blast clean all exposed surfaces of steel in accordance with Steel Structures Painting Council Surface Preparation Specifications No. 7 Brush-Off Blast Cleaning, SSPC-SP7 latest edition. Fabricate steel components in a fabricating plant that is certified for “Intermediate Bridges (IBR)” under the American Institute of Steel Construction (AISC) Quality Certification Program.

Design bridge in a modular fashion with each module weighing no more than 5000 lbs to help ensure versatility in helicopter transportation options.

Acceptable suppliers are:

1.) Contech Engineering Solutions, LLC 8301 State Hwy 29 N Alexandria, MN 56308

(800) 328 2047

2.) Bridge Brothers Inc.

225 Pumpkintown Hwy Building 19th

Pickens, SC 29671

(866) 806 0847

Alternate fabricators meeting this specification are also acceptable.

The final design shall be prepared by a licensed professional engineer whose signed seal shall be on all the drawings and calculations that are submitted for review.”

571.04 Design Drawings.

When furnishing a prefabricated bridge superstructure, submit design drawings, calculations, or shop drawings at least 21 days in advance of the start of fabrication to allow time for review and correction of any changes and approval by the CO. Include plan, elevation, and section views of the modular bridge superstructure, dimensions of all components, welding and connection details, and general and specific notes regarding design and construction.

Construction

571.05 Performance.

Notify the CO at least 14 days before delivering the bridge.

The supplier will not be responsible for unloading the bridge at the site.

Furnish all tools, devices, special equipment, and material needed for installation in well-marked watertight containers suitable for long-term, outdoor storage.

As applicable, furnish the following items for approval prior to delivery of the bridge component:

(a) Supplier or inspection agency certification of wood species and grade of all timber and a conformance certificate for all sawn and glued laminated members.

(b) Certification by an approved inspection and testing agency of wood treatment, listing method of treatment, type of preservative, retention, and penetration. Supplier certification is permitted if each piece is stamped or branded with a legible American Wood Preservers Bureau quality mark.

(c) Certification of structural steel, fasteners, and hardware.

(d) Certification of galvanizing process used.

(e) Steel fabricator certification that steel fabrication and quality control meet the requirements of the AISC Code of Standard Practice; and that all welding meets the requirements of ANSI/AASHTO/AWS D 1.5 Bridge Welding Code.

(f) A complete list of all bridge components, hardware, and fasteners.

(g) Complete erection instructions and drawings. Provide drawings that are black line, of reproducible quality, on ANSI sheet size B. Furnish the same information in an approved electronic format.

Mark each major component of the bridge superstructure with the same serial number. Ensure that the marking is permanent and clearly visible on each component, both when stacked in storage and when erected on a bridge site.

When required, assemble bridge superstructure prior to delivery to assure proper fit-up of all components. Notify the CO of the assembly 2 weeks before assembly.

571.06 Acceptance. Furnish a production certification for timber, including glued-laminated lumber, and fabricated steel. Furnish a certification for all wood treatment, structural steel, fasteners, hardware, galvanizing processes, and non-pressure epoxy grout.

605 – Underdrains, Sheet Drains, and Pavement Edge Drains

Make the following changes to Subsection 605.04(a):

605.04(a) Standard underdrain.

Delete the first paragraph of Subsection 605.04(a) and replace with the following:

Position the geotextile filter, without stretching, in contact with the backwall and the ground behind the wall. Overlap the joints at least 24 inches (600 millimeter) with the upstream geotextile filter placed over the downstream geotextile filter.

Delete the third paragraph of Subsection 605.04(a) and replace with the following:

Place granular backfill to a minimum height of 24 inches (600 millimeter) below the top of the backwall and compact. Do not displace the collector pipe. Place and compact the remainder of the granular backfill material according to Section 209.