Attachment 003 - Technical Specifications.pdf

Forest Service Supplemental Specifications Badger Fire Disaster Relief Water Developments

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 106 – Acceptance of Work 107 – Legal Relations and Responsibility to the Public 108 – Prosecution and Progress 109 – Measurement and Payment 151 – Mobilization 154 – Contractor Sampling and Testing 155 – Schedules for Construction Contracts 171 – Weed and Disease Prevention 201 – Clearing and Grubbing 202 – Additional Clearing and Grubbing 203 – Removal of Structures and Obstructions 207 – Earthwork Geosynthetics 209 – Structure Excavation and Backfill 251 – Riprap 557 – Timber Structures 611 – Water Systems 623 – General Labor 704 – Soil 705 – Rock 717 – Structural Metal 725 – Miscellaneous Material

Attachment 003 - Technical Specifications

Preface

Preface_wo_3_15_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_09_2016

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-14 to Transportation Acquisition Regulations (TAR).

101.03_national_11_09_2016

101.03 Abbreviations.

Add the following to (a) Acronyms:

AGAR

AFPA

FSAR

MSHA

NESC

WCLIB

Agriculture Acquisition Regulations American Forest and Paper Association Forest Service Acquisition Regulations Mine Safety and Health Administration National Electrical Safety Code West Coast Lumber Inspection Bureau

Add the following new subpart (f):

(f) Miscellaneous unit abbreviations.

101.04_forest_1_26_2024

101.04 Definitions.

Delete the following definitions and replace with 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”.

MP milepost (location) ppm parts per million (volume)

STA Station (location)

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.

Plans — (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 Plans 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 Plans — (Timber and Stewardship Contracts) Referred to as “Plans” in FP-14, include Plans, 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.

All references to “Roadbed”, “Roadside”, “Roadway”, and the like herein includes parking lots and trails.

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

Figure 101-1—Illustration of road structure terms.

102 – Bid, Award, and Execution of Contract

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102 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 – Scope of Work

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

104 – Control of Work

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Delete Subsection 104.01, 104.02, and 104.04.

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Add the following new subsection:

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.

106 – Acceptance of Work

106.01_national_07_18_2017

106.01 Conformity with Contract Requirements.

Delete Subsection 106.01 and replace with the following:

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

106.02 Visual Inspection.

Delete Subsection 106.02 and replace with the following:

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.

106.03_forest_1_26_2024

106.03 Certification.

Add the following to the end of this Subsection:

Refer to the following “CSI Spec” Supplemental Specifications for administrative and procedural requirements for preparing and submitting submittals:

Section 013300 – SUBMITTAL PROCEDURES

107 – Legal Relations and Responsibility to the Public

107.05_national_07_18_2017

107.05 Responsibility for Damage Claims.

Delete this entire subsection.

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107.10 Environmental Protection.

Supplement subsection (b) Oil and hazardous substances with the following:

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

Exact time and location of spill including a description of the area involved.

Containment procedures.

Summary of any communications contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

107.11_nat_us_02_17_2005

107.11 Protection of Forests, Parks, and Public Lands:

Add the following new paragraph to the end of this subsection:

Before starting any operations on the project, the Contractor shall prepare & submit a Project Fire Plan, in cooperation with the Contracting Officer, providing for the prevention and control of fires in the project area. The Contractor shall certify compliance with all fire protection and suppression requirements, before beginning operations during the fire period and closed season. Required Tools and Equipment shall be kept currently in serviceable condition and immediately available for initial attack on fires.

108 – Prosecution and Progress

108.00_forest_1_26_2024

108.01 Commencement, Prosecution, and Completion of Work.

Replace this subsection in its entirety with the following:

General work sequence or procedures:

Complete Base Bid work by July 31, 2024 Complete Option Item #1 work by August 31, 2024 Complete Option Item #2 work by October 31, 2024 Complete Option Item #3 work by November 15, 2024

109 – Measurement and Payment

109.00_national_11_09_2016

Delete the following entire Subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

109.01_national_2_22_2019

109.01 Measurement of Work.

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

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 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_09_2016

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Add the following to this subsection:

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

151 – Mobilization

151.01_forest_1_26_2024

151.01 Description

Add the following at the end of the last sentence of this subsection:

Work also includes cleaning of all equipment used at the project site. Clean all construction equipment prior to entry on the project site. Remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Only construction equipment inspected by the Forest Service will be allowed to operate within the project area. Treat subsequent move-ins of equipment the same as the initial move-in. Clean truck beds and dump boxes hauling to the project site prior to entering the work area.

154 – Contractor Sampling and Testing

154.01_nat_us_05_24_2005

154.01 Description.

Delete the last sentence of the first paragraph.

155 – Schedules for Construction Contracts

155.00_national_11_09_2016

Delete Section 155 in its entirety.

171 – Weed and Disease Prevention

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Description

171.01 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.

Material

171.02 Conform to the following Subsection:

Water 725.01

Construction Requirements

171.03 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.

171.04 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.

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

171.06 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.

171.07 Acceptance. Weed prevention will be evaluated under Subsection 106.02.

Measurement

171.08 Do not measure weed prevention for payment.

Payment

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

201 – Clearing and Grubbing

201.01_forest_1_26_2024

201.01 Description.

This work consists of clearing and grubbing within the disturbance limits for each respective stock water system site and disposing of the clearing and grubbing debris by scattering over the new pipeline trench and at other approved locations onsite as determined by the Contracting Officer.

Contractor shall minimize disturbance to each respective stock water system site.

201.02_forest_1_26_2024

Materials

201.02 Material.

Delete all references to “Tree wound dressing material”.

201.04_forest_1_26_2024

201.04 Clearing.

Delete paragraph (c) and replace with the following:

(c) In areas outside the excavation, embankment, and slope rounding limits, cut stumps to within 6 inches of the ground, measured on the side adjacent to the highest ground.

Delete paragraph (d) and replace with the following:

(d) Do not cut vegetation less than 3 feet tall and less than 3 inches in diameter that is located just beyond the disturbance limits, unless this existing vegetation has the potential of dropping its leaves in the new water troughs.

201.06_forest_1_26_2024

201.06 Disposal.

Delete this entire subsection and replace with the following:

In all instances, the slash shall be placed as flat as practicable on the completed waterline trench and at other approved locations. All logs shall be placed in a manner that will not cause the material to roll towards the new trough or headbox structures.

201.07_forest_1_26_2024

201.07 Acceptance.

Delete the second paragraph of this subsection.

201.08_forest_1_26_2024

201.08 Delete this subsection entirely and replace with the following:

Do not measure clearing and grubbing for payment.

201.09_forest_1_26_2024

201.09

Include all costs associated with the Section 201 Clearing and Grubbing in the unit prices for other items as applicable.

202 – Additional Clearing and Grubbing

202.04_forest_1_26_2024

202.04 Selective Clearing.

Add the following:

Hazard trees, outside the clearing limits but within falling distance of troughs and trough frames will be marked for cutting.

These hazard trees shall be cut and remain outside of the clearing limits. If any hazard tree falls within the clearing limits after being cut, it shall be removed and placed back outside of the clearing limit as flat as possible.

203 – Removal of Structures and Obstructions

203.01_forest_1_26_2024

Description

203.01

Replace this subsection in its entirety with the following:

This work consists of removing and disposing of all existing stock water system infrastructure including but not limited to existing troughs, spring headboxes, piping, valves, fittings, wood posts, concrete chunks, and all other existing structures/obstructions as applicable.

203.04_forest_1_26_2024

203.04 Removing Material.

(b) General.

Add the following to the end of the end of this subsection:

Remove all existing pipes exposed during construction activities. Any existing pipe that will be more than 12 inches below subgrade elevation may remain. All piping that is to remain shall be either sealed with an approved water-tight fitting, or sealed with concrete one and a half times the diameter of the pipe, or to a minimum length of 12 inches.

203.05_forest_1_26_2024

203.05 Disposing of Material.

(a) Remove from project.

Delete the last two sentences of this Subsection.

207 – Earthwork Geosynthetics

207.09_forest_1_26_2024

207.09

Do not measure geosynthetics for payment.

207.10_forest_1_26_2024

207.10

Include all costs associated with Section 207 Earthwork Geosynthetics in the unit prices for the applicable Section 611 pay items.

209 – Structure Excavation and Backfill

209.12_forest_1_26_2024

Measurement and Payment

209.12

Measure only the Section 209 pay items listed in the bid schedule according to Subsection 109.02. When measuring distribution waterline length, measure along the completed trench line surface including the length through tees, bends, valves, or other fixtures as applicable. Do not measure distribution waterline within 2-feet of spring headbox structures or within 10-feet of new rodent-proof daylight drain ends as that piping, trenching, bedding, backfill and compaction is included in those respective pay items. Do not deduct for changes in pipe material type for respective trough waterline connections.

The accepted quantity will be paid at the contract price per unit of measurement for the Section 209 pay item listed in the bid schedule. See Subsection 109.05. Payment will be full compensation for the work prescribed under this Section as follows:

HDPE Distribution Waterline Installation, Trenching, Backfill & Compaction.

Payment for this pay item includes installing Government-furnished 2-inch diameter, SDR 11 HDPE waterline, including all required cutting, heat fusion welding, etc. to facilitate the installation, and all required trenching, bedding, backfill and compaction, where shown on the Plans.

Payment for all other required structure excavation and backfill work under this Section shall be included in the associated Section 611 pay items listed in the bid schedule.

251 – Riprap

251.08_forest_1_26_2024

251.08

Do not measure riprap for payment.

251.09_forest_1_26_2024

251.09

Include all costs associated with Section 251 Riprap in the unit prices for the applicable Section 611 pay items.

557 – Timber Structures

557.21_forest_1_26_2024

557.21

Do not measure treated timber structures and associated connecting hardware for payment.

557.22_forest_1_26_2024

557.22

Include all costs associated with Section 557 Timber Structures in the unit prices for the applicable Section 611 pay items.

611.00_forest_1_26_2024

Delete Section 611 in its entirety and replace with the following:

611 – Water Systems

611.01 This work consists of installing new stock water systems in accordance with the Plans, these specifications, and as staked. Water system work includes 1) connecting new HDPE distribution waterline to existing spring headbox structures; 2) installing new Government-furnished corrugated HDPE spring headbox structures; 3) installing new spring headbox supply infiltration trenches; 4) installing new Government-furnished metal sheep and metal cattle troughs including all galvanized steel pipe connections between troughs and to new HDPE distribution waterline, new treated timber trough posts, supports, lumber, and other associated appurtenant items; and 5) installing new rodent-proof daylight drains at new spring headbox locations and at locations below all new trough sites for sake of system overflow and draining.

Refer to the following “CSI Spec” Supplemental Specifications for detailed water system component and installation requirements:

Section 221100 – WATER DISTRIBUTION SYSTEMS Section 221102 – CURB VALVES AND BOXES

Material

611.02 Conform to the following Subsections:

Minor Concrete Structures 601 Bedding Material 704.02 Backfill Material 704.03 Corrugated Polyethylene Drainage Tubing 708.04 (1)Geotextile 714, Table 714-1 (2)Treated Structural Timber and Lumber 716.03 Bentonite 725.19

(1)New geotextile fabric shall be a separation type meeting the minimum requirements noted under Table 714-1 as a Class 2, non-woven, with Type A hydraulic properties.

(2)New treated structural timber and lumber shall be Hem-Fir / Douglas Fir – Larch meeting grading rules agency WWPA, WCLIB.

611.03 General. Conform to the standards of APWA, the AWWA, International Building Code and local/agency plumbing and safety codes.

Install new geotextile separation fabric according to Section 207.

Excavate for new spring headboxes, troughs, daylight drains, infiltration trenches, and all galvanized steel pipe according to Section 209. Bed the pipe according to Subsection 209.08(b). Backfill according to Subsection 209.09 and use extreme care when placing material over the top of pipes to avoid damage. Also remove rocks and hard lumps from the backfill layer to a depth of 12” above the top of pipe.

Hand place new riprap material under and around new rodent-proof daylight drains according to Section 251.

Install new treated structural timber posts, lumber, and associated hardware according to Section 557.

611.04 Aprons. Concrete valve lid aprons shall be constructed where denoted on the respective Water Details in the Plans.

611.05 Acceptance. Materials, installation, and all related excavation, bedding, and backfill will be evaluated under Subsections 106.02 and 106.04.

611.06 Measure the Section 611 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable:

Do not measure excavation, bedding, backfill, geotextile fabric, riprap, treated structural timber, lumber and associated connecting hardware, or minor structure concrete separately for any of the Section 611 pay items.

611.07 The accepted quantities will be paid at the contract price per unit of measurement for the Section 611 pay items listed in the bid schedule. See Subsection 109.05.

Payment will be full compensation for the work prescribed under the Section as follows:

Spring Headbox Construction Complete. Payment for this pay item includes installing a Government-furnished corrugated HDPE pipe headbox structure including all required excavation, backfill and compaction, field perforating new headbox structure to receive water, furnishing and placing a separation geotextile fabric around outside and bottom of this new headbox structure to keep debris out, furnishing/installing new galvanized steel pipe/fittings for overflow, overflow connection to new rodent-proof drain including required trenching, bedding, backfill, and compaction, new rodent-proof drain construction including riprap placement, and new water distribution supply up to and including HDPE/GSP transition fitting, furnishing/installing new curb valve, valve extension and other required pipe/fittings for water distribution supply closure, furnishing/installing water-tight boots or other approved adaptors/connectors for all pipe penetrations to new headbox structure, furnishing/installing bentonite dam at headbox structure outlet side to prevent water loss, and performing all other required work to render a new spring headbox structure as shown on the Plans.

Connect to Existing Spring Headbox. Payment for this pay item includes connecting to the existing distribution waterline supply, to as close to the existing spring headbox as possible but no closer than two feet away, with approved fittings/adaptors as required.

Payment also includes required excavation, backfill, and compaction.

_________ - Trough System Complete. Payment for this pay item includes installing Government-furnished metal troughs in various configurations as shown on the Plans, including performing all required site leveling/grading, furnishing/installing treated structural timber, lumber, and associated connecting hardware for trough support system, and furnishing/installing all galvanized steel pipe/fittings/valves/valve extensions and concrete aprons, and HDPE/GSP transition fittings for trough water supply, overflow, and draining. Payment also includes all required trenching, bedding, backfill and compaction.

Spring Headbox Infiltration Trench & Backfill. Payment for this pay item includes installing new infiltration trenches including all excavation, backfill, perforated HDPE pipe having integral filter sock, fittings as required, clean washed drain rock, geotextile separation fabric placed in “burrito-wrap”, and all other required appurtenances to render a new infiltration trench as shown on the Plans.

Rodent Proof Daylight Drain. Payment for this pay item includes furnishing/installing galvanized steel pipe, HDPE/GSP transition fitting, other fittings as required, long suction strainer, riprap, and all other required appurtenances, including required trenching, bedding, backfill and compaction, as shown on the Plans. No separate payment will be made for Rodent Proof Daylight Drains that connect to new spring headbox structures.

623 – General Labor

623.01_forest_1_26_2024

623.01

Delete this subsection in its entirety and replace with the following:

This work consists of furnishing workers and all required hand tools necessary to perform cleanup and finishing/restoration duties at each respective site.

623.02_forest_1_26_2024

623.02 Workers and Equipment

Delete the last paragraph under this subsection in its entirety and replace with the following:

Remove all construction debris from each site and dispose of off forest. Ensure new troughs are rendered clean and free of any dirt or other deleterious material.

Ensure all disturbance areas are raked to render smooth/uniform and matching adjacent terrain/contours. Ensure material placed in/around of new troughs is graded evenly to match trough sides and adjacent supporting treated timber.

Ensure any rocks or other woody debris that exist are spread out and scattered to match the existing terrain.

704 – Soil

704.08_national_11_8_2016

704.08 Select Granular Backfill.

Delete Subsection 704.08(a)(2)

Delete Table 704-2 and replace with the following:

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

705 – Rock

705.02_national_7_18_2017

705.02 Riprap. Table 705-1.

Add the following Class to Table 705-1 in Subsection 705.02:

Table 705-1 Gradation Requirements for Riprap (1)

Class % of Rock Equal or Smaller by Count, DX

Range of Intermediate Dimensions, (2) inches (millimeters)

Range of Rock Mass, (3) pounds (kilograms)

100 6 – 8 (150 –200) 17 – 41 (8 – 19) 85 5 – 6 (150 – 150) 10 – 17 (5 – 8) 50 2 – 5 (50 – 125) 0.6 – 10 (0.3 – 5) 15 0 – 2 (0 – 50) 0 – 0.6 (0 – 0.3)

717 – Structural Metal

717.07_nat_us_08_05_2009

717.07 Galvanized Coatings.

Add the following:

Furnish hot-dipped galvanized hardware and fasteners conforming to AASHTO M 232 and mechanically galvanized hardware and fasteners conforming to AASHTO M 298.

Repair damaged galvanized surfaces by power or hand tool cleaning, followed by 2 brush applications of zinc rich 2 component paint meeting FS TT-P-641, FS TT-P-1046A or MIL-P-21035. Single component brush or spray-on zinc or galvanizing compounds are not permitted. A source for TT-P-641 paint is Far West Paint Company, Tukwila, WA 206-244-8844.

725 – Miscellaneous Material

725.19_national_11_7_2016

Add the following Subsection 725.19.

725.19 Bentonite. Furnish bentonite as sodium montmorillonite (sodium bentonite) in the form of a powder that meets the following requirements:

(a) Colloid content by AASHTO T88 is 60 percent minimum.

(b) Sieve analysis in accordance with AASHTO T27 on a dry, unwashed, pulverized sample yields the following:

i) A minimum of 95% passing the No. 4 sieve.

ii) A minimum of 15 percent passing the No. 200 sieve.