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Matheny Creek AOP Culvert Replacement Project - FSR 2100 MP 6.9

Olympic National Forest Matheny Creek, Jefferson County, WA

Technical Contact: Doug Bladek Phone: (509) 675-0188

Specific Location and current site photos - 47.563579°, -124.038627°

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

For

MATHENY CREEK AOP

CULVERT REPLACEMENT

NFSR 2100 – MP 6.90

U.S.D.A. FOREST SERVICE

OLYMPIC NATIONAL FOREST

Prepared by:

November 2022

11-22-2022

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

152 - Construction Survey and Staking

153 - Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion and Sediment Control

171 - Weed and Disease Prevention

201 - Clearing and Grubbing

203 - Removal of Structures and Obstructions

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

209 - Structure Excavation and Backfill

272 - Geocell Abutment Stabilization

302 - Minor Crushed Aggregate

552 – Structural Concrete

554 - Reinforcing Steel

603 - Structural Plate Structures

633 - Permanent Traffic Control

625 - Turf Establishment

648 - Stream Simulation

704 – Soil

705 – Rock

725 - Miscellaneous Material

Preface Preface_wo_02_26_2021

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_National_3_15_2017

101.01 Meaning of Terms.

Delete all references to the FAR (Federal Acquisition Regulations) in the specifications when incorporating into 2400-6(T) Timber Sale or 2400-13(T) Stewardship contracts.

Add the following paragraph to Subsection 101.01:

101.01_National_11_9_2016

101.01 Meaning of Terms.

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

Add the following to Subsection 101.03:

101.03_National_11_9_2016

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

Make the following changes to Subsection 101.04:

101.04_National_9_5_2018

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_15_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.

103.00_National_11_9_2016

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work

Delete Subsections 104.01, 104.02, and 104.04.

104.00_National_11_15_2016

Delete Subsections 104.01, 104.02, 104.04.

Add the following to Subsection 104.06:

104.06_National_11_9_2016

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.

Add the following to Subsection 105.02(a):

105 - Control of Material

105.02_National_11_1_2016

105.02(a) Government-provided sources.

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

(1) Government-provided sources.

Pay Item Description Material source number or name Waste Site 47°35'55.55"N, 124° 2'34.07"W

Add the following to Subsection 105.02 (a):

105.02_National_7_10_2017

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.

Add the following to Subsection 105.02c:

105.02_National_11_1_2016

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

Delete Subsection 106.01 and replace with the following:

106.01 _National_7_18_2017

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.

107 - Legal Relations and Responsibility to the Public

Add the following to Subsection 107.02:

107.02_National_11_1_2016

107.02 Protection and Restoration of Property and Landscape.

Work within the wetted perimeter of streams will be allowed only as specified in the approved project permits

Delete Subsection 107.05:

107.05_National_7_18_2017

Delete Subsection 107.05.

108 - Prosecution and Progress

Delete Section 108 in its entirety.

108.00_National_11_9_2016

Delete Section 108.

109 - Measurement and Payment

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

109.00_National_11_9_2016

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 0.1 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

Add the following sentence to Subsection 109.02(b):

109.02 _National_11_9_2016

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.

152 - Construction Survey and Staking

Add the following to Subsection 152.04(c):

152.00_National_2_8_2019

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)

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

±0.06 feet (±20 millimeters)

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

±50 millimeters)

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

Retaining walls stakes ±0.06 feet

Curb and gutter stakes ±0.06 feet

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

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

Clearing and grubbing limit stakes- Tolerance Class A

±1.00 feet (±300 millimeters)

Roadway subgrade finish stakes- Tolerance Class A (6)

Roadway finish grade stakes (6) ±0.16 feet

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 × N

(±20 millimeters × N )(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)

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

±50 millimeters)

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

(±150 millimeters)

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

±2.00 feet (±600 millimeters)

Roadway subgrade finish stakes–Tolerance Class B (7)

Roadway finish grade stakes–Tolerance Class B (7)

(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_National_2_8_2019

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_National_2_8_2019

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.

Add the following to the end of Subsection 153.04(a)(2):

153.03_National_11_1_2016

At a minimum the contractor shall provide project submittals as shown on the below Submittal Log. 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

151 Weed Free Material Source

Certification Material

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

157 Dewatering and Soil Erosion and Pollution Control Plan

Plan

FSSS 157.04

6 154 Material Moisture/Density Testing Test Results Table 208-1 106

7 154 Culvert Backfill Compaction Testing Test Results 209.11, 209.12 106

Base and Subbase Aggregate Gradation/

302.06

Drawings

9 302 Base and Subbase Aggregate Compaction Testing Test Results 204.15 106

10 403 Composition of Mix Mix Design 403.02 106

11 403 Asphalt Compaction Testing Test Results 403.09 106, 403.12

12 552 Structural Concrete: Mix Design Mix Design 552.03 Drawings

13 552 Structural Concrete: Testing Test Results 552.20 106, Drawings

14 552 Reinforcing Steel Material Certification 709.01 Drawings

15 552 Miscellaneous Material: Grout Material Certification FSSS 725.19 Drawings

16 552 Miscellaneous Material: Grout Product Approval FSSS 725.19 Drawings

17 552 Welder Certification Copy of Certification Sheet 2 of Plans

18 552 Precast Concrete Structures Shop Drawing FSSS 552.20 104, 554

19 552 Precast Concrete Structures:

Industry Certification

Fabrication Certification FSSS 552.20

Precast Concrete Structures: Testing

Test Results

FSSS 552.20

106, 554, 562

Reinforcing Steel

Order List

554.03 554, 709, Drawings

Structural Plate Structures Material

603.04

106, Drawings

Structural Plate Structures Assembly

Instructions

603.04

106, Drawings

Submittal Log

Log No.

Incidental to Pay Item(s)

Description of Submittal

Submittal

Requirement found in

Specification No.

/Drawings

Additional

Specification References

Mulch Material

FSSS 625.07

Streambed Simulation Material

5-day notice prior to construction

705.08

Delete Subsection 153.07 and replace with the following:

153.07_National_2_8_2019

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 and replace with the following.

Section 155.

Contractor is required to submit a construction schedule for approval by the CO at least 30 days prior to beginning the work. The Contractor is also required to update the construction schedule as needed.

156 - Public Traffic

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

156.00_National_2_8_2019

Section 156. – Public Traffic

Description

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

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 15 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. Road 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 roads during construction, give written notice to the Contracting Officer at least 30 days in advance.

Table 156-1 Temporary Road Closures

Road Number

From Terminus

To Terminus

Maximum Consecutive Days of Closure

Minimum Consecutive Days Open

Intersection with

NFSR 2140

Intersection with

NFSR 2160

NA

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

157.01 _0618_us_02_03_2009

157.01 Add the following:

This includes protection of all phases of work during the life of the contract including storm events.

Delete Subsection 157.04 and replace with the following:

157.04_National_11_1_2016

157.04 General.

Thirty (30) days prior to the start of construction, submit a written plan that provides specific sediment control measures to minimize delivery of soil and turbidity into the stream during the construction period including a channel diversion and dewatering plan if dewatering is required. Include the sequence of operations and information on equipment, materials and suppliers. Measures given in the Plans and Supplemental Specifications are minimum requirements, and may be revised only with written approval by the CO.

The turbidity of the water 100-200 feet downstream shall not be visually greater than the turbidity of the water upstream of the project site.

When this turbidity requirement or other erosion control measures are not met, immediately take corrective action.

Cease operations that are causing turbidity and pump or otherwise improve the diversion of the stream around the construction site according to this specification and the Plans until the turbidity requirement can be met. When the interpretation of this requirement is in question, measure turbidity using a turbidity meter as approved by the CO, and provide documentation that operations are in compliance with FAR 52.236-7 Permits and Responsibilities, subsection

107.01 Laws to be Observed and subsection 107.10 Environmental Protection, and subsection 107.11, including but not limited to, the requirements of the National Marine Fisheries Service.

Do not begin work until the necessary controls for that particular phase of work have been implemented. Incorporate all erosion control features into the project at the earliest practicable time, as agreed by the CO.

Operate in a manner that will avoid harm to aquatic organisms whenever possible.

Notify the CO of the intention to dewater the stream, at least 10 days in advance. Do not re-route the stream until approved by the CO. Do not start construction until CO approves of aquatic organism removal. Dewater the stream slowly and incrementally in order to facilitate the fish rescue. The rescue operation will generally take several hours.

Do not release water through the newly constructed simulated streambed until approved by the CO. After approval, release water slowly and incrementally over a period of at least one hour, or as approved by the CO. During this time, treat any water that does not meet the requirements of the turbidity standard stated in this specification.

157.05 Controls and Limitations on Work. Add the following:

Prior to construction, Contracting Officer will delineate critical riparian vegetation areas, wetlands, and other sensitive sites to prevent ground disturbance. Minimize disturbance to existing vegetation along stream.

Where necessary, danger tree removal may be required. Fell danger trees within riparian areas. Where possible, fell trees towards the stream. Dispose of trees as directed by the Contracting Officer.

Confine work within the construction limits marked by the Contracting Officer. Use existing roadways or travel paths whenever reasonable. Minimize the number of new access paths.

Dispose of waste material at approved sites.

When erosion control materials are to be left on site after the project has been completed, construct erosion controls of organic and bio-degradable materials whenever possible.

157.05(b) Add the following:

For the work immediately adjacent to the stream, use sediment control barriers between the work and the stream.

Place sediment barriers prior to construction around sites where significant levels of erosion may enter the stream directly or through road ditches.

Provide straw bales and silt fence for sediment control measures for each channel crossing being constructed concurrently. Use only as needed for sediment control or when specified by the Contracting Officer.

Provide waterproof membrane products to cover all stockpiled material adjacent to a live stream that is subject to erosion or water saturation. Cover stockpiles at the end of each work day and all day during the threat of precipitation or when specified by the Contracting Officer.

157.05(d) Delete the subsection and replace with the following:

Apply temporary turf establishment, mulch and stabilization measures on disturbed areas within three days of the last disturbance. Short-term stabilization measures may include the use of non-native sterile seed mix when native seeds are not available; weed-free certified straw, jute matting, and other similar techniques. Maintain short-term stabilization measures until permanent erosion control measures are effective.

157.05(f) Add the following:

When required by the Contracting Officer, loosen compacted areas, such as access roads, stream crossings, staging, and stockpile areas.

157.10 Diversions. Add the Following:

Construct stream diversion, related appurtenances and measures as follows:

(a) In Stream Work.

(1) Isolate construction area and coordinate with Contracting Officer for aquatic species removal by the Government._ Coordinate aquatic species removal a minimum of 10 working days prior to beginning isolation of construction areas.

(2) Cease project operations under high flow conditions that inundate the project area, except for efforts to avoid or minimize resource damage.

(3) When approved, minimize time in which heavy equipment is in stream channels, riparian areas, and wetlands. Operate heavy equipment in streams only when Contracting Officer determines that such actions are the only reasonable alternative for implementation, or would result in less sediment in the stream channel or damage (short- or long-term) to the overall aquatic and riparian ecosystem relative to other alternatives.

(4) Clean and repair all equipment used in the in-stream work prior to entering the project area.

Remove external oil and grease, along with dirt and mud, prior to construction. Inspect equipment daily for leaks or accumulations of grease, and repair any identified problems prior to entering streams or areas that drain directly to streams or wetlands.

(5) Fuel and service equipment used for in stream or riparian work in an approved staging area outside of riparian zone. When not in use, store vehicles in the staging area.

(b) Stream Bypass Dam and Pipe. Construct a dam of material handling bags, and bypass pipe as shown on the Plans or as approved by the CO. The mining of material from the streambed or floodplain to construct diversions is not permitted. If diversion allows for downstream aquatic species passage, (i.e., is not screened), place diversion outlet in a location to promote safe reentry of aquatic species into the stream channel, preferably into pool habitat with cover.

(l) Primary Bypass Dam. Construct the material handling bag dam in a dry condition by first pumping the stream around the dam. Place temporary cofferdams as needed. Remove rock and other irregularities from the streambed to form smooth bedding for the bypass dam. Place the dam so that water does not seep from the downstream side of the dam; if seepage occurs, improve the dam by adding bags, improving or adding seals, or other means to minimize seepage from the dam. When it is impossible to eliminate seepage, construct a sump and pump clear water to the upstream side of the dam.

(2) Bypass Dam Impermeable Membrane. Place an impermeable membrane within or on the upstream side of the dam and entrenched in the streambed as shown on the Plans or approved by the CO. When approved by the CO, a small amount of granular bentonite may be used along the edges of the membrane to minimize seepage between the membrane and the streambed. Cut a hole in the membrane to fit the bypass pipe and seal the membrane to the bypass pipe or the bypass pipe collar using gaskets, adhesive strips or other approved methods.

(3) Bypass pipe. Place bypass pipe as shown on the Plans or approved by the CO. Place the upstream invert of the pipe at the lowest point in the stream channel as practical. Install joints and elbows as shown on the Plans and as needed to accommodate the site layout. Use watertight seals meeting the requirements of Subsection 712.03. Do not place backfill until the pipe joints have been approved by the CO. Allow water to pass through pipe only after a downstream splash apron has been prepared in a manner that will protect the stream from scour and turbidity, and protect fish from harm. Construct the bypass in a manner that avoids injury to aquatic organisms.

(4) Material handling bags. Use only clean sand or coarse concrete aggregate in the bags. Loosely fill and tamp the bags in place to minimize seepage between, under, and around the bags.

(5) Bypass Pipe Collar. Install and maintain a leak-proof pipe collar as shown on the Plans or approved by the CO.

(6) Sediment Retention Pond. Provide a pond immediately downstream of the construction area capable of collecting and holding all seepage, drainage, and sediment not captured in stream diversion.

Provide sufficient storing capacity to enable a sump pump to transfer the water, sediment and turbidity to a suitable treatment facility or area. Construct a downstream cofferdam to create a sediment retention pond when none is available immediately downstream of the project, when it is too small to use or to prevent water from entering the work area.

(c) Pumps. Install pumps as required to re-route stream around construction site and dewater foundations.

When failure of a pump would result in movement of sediment or turbidity beyond the work area, provide a back-up pump that is readily available. When adjacent stream crossing projects are constructed concurrently, provide a minimum of one extra pump on site for the largest discharge site. Use the pumps for installing and removing the gravity bypass pipes and dams, at other times to facilitate construction operations, and during storms to supplement the gravity bypass. Pumps must have fish screens if used in streams where aquatic species are present and be operated in accordance with National Marine Fisheries Service (NMFS) aquatic species screen criteria. Equip the pump with approved screens, appropriate suction and discharge hoses, fittings and flow regulation equipment as needed. Insure that the pumps are clean, free of leaks and that the oil used as lubricant in the pump seal systems is food grade mineral oil. Install and operate pumps in a manner that will avoid impingement of small fish against the intake screens.

(1) Pump intakes. Use one of the following methods of screening on all draft hoses:

i. Perforated Plate; screen openings shall not exceed 3/32 or 0.0938-inches.

ii. Profile Bar Screen; the narrowest dimension in the screen openings shall not exceed 0.0689-inches in the narrowest direction.

iii. Woven Wire Screen; screen openings shall not exceed 3/32 or 0.0938-inches the narrow direction.

Check intakes frequently and clean as needed with wire brushing, flushing, or any other acceptable method.

(2) Sump Pumps. Supply pumps capable of dewatering the structure foundation and sediment retention pond. Insure that pumps are clean and free of leaks. Remove sediment and turbidity in the Sump Pump discharge water prior to re-entering the stream.

(d) Sump Water Discharge. Discharge sump water as shown on the Plan or as approved by the CO. Apply one or more methods to remove sediment from sediment-laden water. Apply additional methods as needed to eliminate increase in downstream turbidity. Use the following methods as needed:

(1) Natural Vegetation/Soil Dispersal and Filtration. Discharge sump water onto areas of ground most advantageous for dispersal and filtration of sediment, e.g. flat heavily vegetated soil. When single point discharge does not function adequately, discharge water into a perforated pipe or series of pipes laid approximately level so that the brown water disperses over a wide area.

(2) Silt Bag Filtration. Discharge sump water into one or more silt bags. Silt bags are constructed of Mirafi 180N (or approved equal) with sewn seam strengths of90% efficiency according to ASTM D4632.

Construct bag to hold and filter sump water. Place silt bag(s) on level ground having layer of straw one foot thick minimum.

(3) Settling Basin. Discharge sump water into one or more basins. The basins may be pre-manufactured tanks, folding tanks, geotextile or membranes placed over a sandbag or weed-free straw berm, or other similar basins designed to separate sediment from the water.

(4) Suspended Sediment Coagulation Agent. When other methods do not function adequately, add an approved coagulation agent to water prior to discharging the water onto natural vegetation, silt bag, or settling basin. Use a flocculation agent such as Chitisan-based Stonn-Klear Gel-Floc, or approved equal.

Use suspended sediment coagulation agent according to manufacturer's recommendations.

(e) Stream Re-Watering. Monitor downstream during rewatering to prevent stranding of aquatic organisms below the construction site. Ensure that concrete is sufficiently cured or dried before coming into contact with stream flow.

157.15 Maintenance & Cleanup. Add the following:

When removing sandbags, spread sand away from the waterway; if coarse concrete aggregate meeting the requirements of Subsection 703.02 is used in the sandbags, the gravel may be distributed evenly across the waterway.

Remove geotextile and other non-biodegradable materials used in dewatering and sediment control operations from Government property, unless otherwise approved by the CO.

171 - Weed and Disease Prevention

171.00_nat_us_03_30_2005

This work consists of washing and treating construction equipment to remove seeds, plants, and plant fragments from the equipment before the equipment is used on National Forest System lands.

Conform to the following Subsection:

Water 725.01

General. Notify the CO in writing at least 15 days before moving any construction equipment onto National Forest System lands. Construction equipment does not include cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas outside of National Forest System lands.

Perform all work at a location designated on the plans or other locations approved in writing. Provide the CO with an opportunity to monitor the washing and inspection.

Equipment. Use a high pressure washing system.

For work on National Forest System lands, use a washing system that traps all wash water and either stores it for removal from National Forest System lands or recycles the water for continued use. If the equipment recycles the water, provide adequate filters for seed removal. Dispose of the filter material and removed seeds in an approved manner. Do not mix soaps, detergents, or other chemicals with the wash water.

For work at a commercial washing facility, use an approved facility.

Washing. Wash the sides, tops, and undercarriages of all construction equipment. Remove all seeds, plants, plant fragments, dirt, and debris from the construction equipment.

Inspection. Inspect the washed construction equipment, including the undercarriage, to ensure that the washing removed the dirt, debris, and seeds from the construction equipment. Rewash the construction equipment as necessary or as directed.

Acceptance. Weed prevention will be evaluated under Subsection 106.02.

Measurement

Do not measure weed prevention for payment.

Payment

Include all costs associated with the Section 171-Weed Prevention in the unit price for Section 151-Mobilization.

201 - Clearing and Grubbing

Delete and replace Subsection 201.04(d) with the following:

201.04_National_11_8_2016

201.04(d) Clearing.

(d) Trim tree branches that extend over the road surface and shoulders to attain a clear height of 15 feet. Trim tree limbs as near flush with the trunk as practicable.

Add the following paragraph to Subsection 201.04:

201.04_National_11_2_2016

201.04 Clearing.

(e) Do not cut vegetation less than 3 feet in height and less than 3 inches in diameter that is within the clearing limits but beyond the roadway and not in a decking area and that does not interfere with sight distance along the road unless otherwise designated.

201.06 Disposal. Delete this subsection and substitute the following:

201.06_National_11_2_2016

Merchantable timber is the Government’s property. Limb and deck merchantable timber on site as directed by the CO.

Delete this subsection 201.08 and replace with the following:

201.08. Do not measure clearing and grubbing for payment.

203 - Removal of Structures and Obstructions 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.

Add the following to Subsection 203.05:

203.05_National_10_31_2019

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 30 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.

204 - Excavation and Embankment

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

204.00_National_2_8_2019

Section 204. — Excavation and Embankment

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.