7. Forest Service Supplemental Specifications.pdf

Forest Service Supplemental Specifications (FSSS)

Los Padres National Forest

Los Padres National Forest Retaining Wall Projects Arroyo Seco (19S09) Road &

Romero Camuesa (15N15) Road

Table of Contents

Preface

101 - Terms¸ Format¸ and Definitions

101.01 Meaning of Terms

101.03 Abbreviations

101.04 Definitions

102 - Bid¸ Award¸ and Execution of Contract

Delete Section 102

103 - Scope of Work

Delete Subsections 103.02, 103.03, 103.04, 103.05

104 - Control of Work

Delete Subsections 104.01, 104.02, 104.04

104.06 Use of Roads by Contractor

105 - Control of Material

105.05 Use of Material Found in the Work

106 - Acceptance of Work

106.01 Conformity with Contract Requirements

106.02 Visual Inspection

107 - Legal Relations and Responsibility to the Public

Delete Subsection 107.05

108 - Prosecution and Progress

Delete Section 108

109 - Measurement and Payment

Delete Subsections 109.06, 109.07, 109.08, 109.09

109.01 Measurement of Work

109.02 Measurement Terms and Definitions

152 - Construction Survey and Staking

152.04 General

152.05 Survey and Staking Requirements

Table 152-1 Construction Survey and Staking Tolerances

153 - Contractor Quality Control

153.02 Qualifications

153.03 Quality Control Plan

153.07 Records and control charts

153.04 (2) (a) Submittal Log

155 - Schedules for Construction Contracts

Delete Section 155

157 - Soil Erosion and Sediment Control

157.04 General

201 - Clearing and Grubbing

201.04 Clearing

201.06 Disposal

209 - Structure Excavation and Backfill

209.10 Compacting

302 - Minor Crushed Aggregate

302.04 Placing Crushed Aggregate

302.05 Compacting and Finishing Crushed Aggregate

622 - Rental Equipment

622.01 Description

633 - Permanent Traffic Control

633.02 Material

633.03 General

633.05 (a) Fabrication

703 - Aggregate

703.05 (c) Surface course aggregate. (3) Plastic Index

704 - Soil

704.08 Select Granular Backfill

704.08 Select Granular Backfill. (a) Quality requirements. (2)

704.08 Select Granular Backfill. Table 704-2

705 - Rock .................................................................................................... Error! Bookmark not defined.

705.02 Riprap. Table 705-1. ....................................................................... Error! Bookmark not defined.

Preface Preface_wo_04_01_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 105.05_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.

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 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

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.

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.

N

N

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.

153.07_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.

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

Item No.

Incidental to

Pay Item(s) Description of Submittal Type of

Submittal

Requirement found in Specification No.

/Drawings

Additional Specificatio n References

1 151 Weed Free Material Source Certification

Material Certification FSSS 105

2 151 Hazardous Spill Plan Plan FSSS 107.10

3 154 Contractor Quality Control Plan Plan 153.03

4 157 Soil Erosion and Sediment Control Plan Plan FSSS 157

5 209 Moisture/Density- Foundation Materials Test Results Table 209-1, 209.10 106, FSSS

7 209 Foundation Material - Density Testing Test Results Table 209-1, 209.10 106, FSSS 209

8 255 Gradation & Atterberg Limits – Select Granular Backfill Test Results Table 255-2 FSSS 704

9 255 Moisture/Density- Select Granular Backfill Test Results 209.10

Table 255-2

FSSS 255

10 255 MSE Wall Installation Drawings Manufacturer’ s Drawing 255 Drawings

12 605 Prefabricated Geocomposite Drain

Material Certification 605 Drawings, 13 605 (HDPE) Polyethylene Drain Pipe, Perforated and Non-

Perforated

Material Certification 605 708, Drawings

14 605 Underdrain Granular Backfill Test Results 605 703

15 605 Drain Outlet Riprap Test Results 605 705

16 605 Underdrain Geotextile Material Certification 605 714

Submittal Log

Item No.

Incidental to

Pay Item(s) Description of Submittal Type of

Submittal

Requirement found in Specification No.

/Drawings

Additional Specificatio n References

17 629 Erosion Control Mat Material Certification 629 713

18 633 Roadway Delineators Material Certification FSSS 718

19 705 Class 1 Riprap Material Certification 705 251

20 302 Aggregate Surfacing Material Certification FSSS 302 703.06

21 714 Reinforcement Geogrid Material Certification 714.04 261

22 714 Geotextile Materials Certification 714.01 252

155 - Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

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.

201 - Clearing and Grubbing 201.04_National_9_10_2018

Construction Requirements

Delete paragraph (c) and replace with the following:

201.04 Clearing

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to maximum stump height shown in table below.

Utilization standards for merchantable timber are listed below. Fall and buck merchantable material into lengths not to exceed _________ feet. Pieces (logs) meet utilization standards when such pieces would have met Utilization Standards if bucking lengths were varied to include such material.

Minimum Utilization Standards

Species Maximum Stump

Height (inches) Length (feet) Diameter1 (inches) % Net Scale2

1 measured at inside bark at small end 2 in % gross scale

201.06_National_2_22_2018

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

201.06 Disposal.

Merchantable timber is Government property.

209 - Structure Excavation and Backfill 209.12_Project_4_1_2022

Delete Subsection 209.12 and replace with the following:

Measurement and Payment

209.12 The accepted quantities will be paid at the contract price per unit of measurement for the Section 209 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

255 – Mechanically Stabilized Earth Walls 255.01_Project_07_01_2020

Description

255.01

Add the following:

This work consists of furnishing and installing a prefabricated welded wire mechanically stabilized earth retaining wall constructed in accordance with these specifications and in reasonable close conformance with the lines, grades, design, and dimensions shown on the Drawings. The retaining walls should also be constructed according to the manufacturer’s specifications. This work also includes backfill and compaction for the retaining walls.

Materials

255.02

Add the following:

Geotextile 714.01 Welded Wire Wall Components 720 Select Granular Backfill 704.08

Hilfiker (or approved equivalent) welded wire retaining wall systems shall be used. All materials shall be approved by the CO in accordance with applicable Sections and Subsections or as shown on the Drawings.

Welded wire fabric for facing shall be formed by a 90-degree bend of the soil wire reinforcement mesh and a prong to interlock with the soil reinfocing mesh above. The mesh shall be shop fabricated of cold drawn steel wire and shall be welded into the finished mesh fabric conforming to the minimum requirements of ASTM A-1064, with a minimum yield strength of 65 ksi (450 MPa). Welded wire shall consist of W9.5 x W4.0 size steel (longitudinal x transverse) or as designated in the drawings.

Construction Requirements

255.03 General

Add the following:

Erect the retaining walls according to the manufacturer’s recommendations and procedures, specifications, tolerances, and Drawings.

Survey according to Section 152 and verify the limits of the wall installation. Prepare and submit installation drawings according to Subsection 104.03. Grade the foundation for a width equal to or exceeding the length of soil reinforcing elements plus 24 inches, or as shown on the drawings.

Where the wall is set on a rocky foundation, place 6 inches of select granular backfill under the reinforcement to provide a level building pad.

Wall construction shall begin at the lowest portion of the excavation or at a location approved by the CO and shown in the Drawings, and each layer shall be placed at grades as shown on the Drawings.

Backfill materials shall be mixed and blended to provide homogeneous material. Provide primary water conditioning, mixing, and blending in stockpiles if necessary. Distribute the backfill in any given zone and lift such that it is free from lenses, pockets, streaks, or layers differing in material type or texture or gradation from the surrounding fill.

302 - Minor Crushed Aggregate 302.04_National_7_18_2017

Add the following to Subsection 302.04 and 302.04(a)

302.04 Placing Crushed Aggregate.

Written approval of the surface is required before placing aggregate.

(a) Roadway aggregate.

For pit run or grid-rolled material, furnish material smaller than the maximum size, no gradation will be required otherwise. After processing on the road, remove all oversize material from the road and dispose as directed by the CO.

302.05_National_6_11_2020

Replace the first paragraph of subsection 302.05(a) with the following:

302.05 Compacting and Finishing Crushed Aggregate

(a) Roadway aggregate. Unless otherwise specified compact according to method 2. Finish surface according to Subsection 301.06.

605 – Underdrains, Sheet Drains, and Pavement Edge Drains 605.05_Project_7_01_2020

Delete the first two paragraphs and substitute the following:

605.05 Placing Geocomposite Sheet Drain.

The prefabricated drain shall be installed in accordance with the manufacturer's directions and as shown on the Drawings. When backfilling, care shall be taken to not damage the prefabricated drain. The excavation backfill slope shall be free of all protruding rocks greater than three inches and roots. The surface to receive the prefabricated drain assembly shall be prepared so that it has a uniform surface. Rocks larger than three inches shall not be placed closer than six inches from the prefabricated drain.

Couplers, tees, crosses and other fittings shall be joined securely with the pipe and prevented from coming apart by at least one complete wrap of two-inch-wide duct tape at each joint.

Any portion of the prefabricated drain damaged during installation shall be removed and replaced.

Delete the second sentence of second paragraph and substitute:

Overlap geotextile a minimum of 12 inches in the direction of water flow.

Delete the last paragraph.

622 - Rental Equipment 622.01_Regional_5_1_2018

Add the following to Subsection 622.01

622.01 Description

Work is to correct minor site discrepancies not noted in the contract documents that occurred between award of contract and implementation of work needed to result in a complete project. Examples of work may include:

a. Excavating and placing embankment,

b. Slide removal,

c. Drainage and roadway repair,

d. Haul and placement of material such as rocks, logs, or debris, or

e. Sign or gate installation

633 - Permanent Traffic Control 633.00_National_11_8_2016

Delete the first sentence of Subsection 633.02 and replace with the following:

633.02 Material.

Conform to the MUTCD, USDA Forest Service EM-7100-15, and the following Section and Subsections:

Make the following changes to Subsection 633.03:

633.03 General.

Delete the first paragraph of Subsection 633.03 and replace with the following:

Furnish and install permanent traffic control devices according to the MUTCD, USDA Forest Service EM- 7100-15 and permanent traffic control plans. Provide traffic control devices that are crashworthy.

Add the following sentence to Subsection 633.03:

Sign panel layout proofs shall be approved by the CO prior to ordering.

Add the following to Subsection 633.05(a):

633.05 (a) Fabrication.

(3) Protective Overlay Film. When specified, cover the entire face of a sign with a clear high-performance, solvent-resistant, ultraviolet-stabilized, pressure-sensitive adhesive, protective overlay film. Use 3M Scotchlite Premium Protective Overlay Film Series 1160 or approved equivalent.

(4) Edge Film. When specified, edge film shall be 3 inches wide vinyl film that is pressure-sensitive, premium quality, clear, and ultraviolet-resistant.

703 - Aggregate 703.05_National_7_18_2017

Delete Subsection 703.05(c)(3) and Replace with the following:

703.05 (c) Surface course aggregate. (3) Plastic Index

(3) Plastic Index, AASHTO T 90

If the percent passing the No. 200 sieve is less than 12% 2 to 9 If the percent passing the No. 200 sieve is greater than 12% Less than 2

704 - Soil 704.08_National_11_8_2016

Make the following changes to Subsection 704.08:

704.08 Select Granular Backfill.

Delete Subsection 704.08(a)(2)

704.08 Select Granular Backfill. (a) Quality requirements. (2)

Delete Table 704-2 and replace with the following:

704.08 Select Granular Backfill. Table 704-2

Table 704-2 Select Granular Backfill Gradation

Sieve Size

Percent by Mass Passing Designated Sieve

(AASHTO T 27 & AASHTO T 11)

4 inch (100 mm) 100 No. 40 (425 µm) 0 – 30 No. 200 (75 µm) 0.0 – 8.0