Attach3.1240LU26Q0020FSSS.pdf

PROJECT SPECIFICATIONS

RILEY PASS URANIUM MINE SITES

2026 BLUFF B MINE WASTE

EXCAVATION PROJECT

Custer Gallatin National Forest

January 2026 https://www.bing.com/images/search?view=detailV2&ccid=VCAUxpC0&id=FD0B50480F85B0D2ABBBA661B3F4F917761EEE77&thid=OIP.VCAUxpC0aTGqk6EkzC_WrQHaID&mediaurl=https://upload.wikimedia.org/wikipedia/commons/thumb/3/30/ForestServiceLogoOfficial.svg/1200px-ForestServiceLogoOfficial.svg.png&exph=1305&expw=1200&q=usfs+logo&simid=608053847592339661&selectedIndex=0

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

103 - Scope of Work

104 - Control of Work

104.06 Use of Roads by Contractor

106 - Acceptance of Work

106.01 Conformity with Contract Requirements

106.02 Visual Inspection

107 - Legal Relations and Responsibility to the Public

108 - Prosecution and Progress

109 - Measurement and Payment

109.01 Measurement of Work

109.02 Measurement Terms and Definitions

151 – Mobilization

151.01 Description

152 – Construction Survey and Staking

152.01 Description

152.02 Qualifications

152.03 Submittals

152.04 General

152.05 Survey and Staking Requirements

155 - Schedules for Construction Contracts

157 – Soil Erosion and Sediment Control

157.02 Material

157.04 General

158 – Construction Water

158.01

158.02 Conform to the Following Subsection

158.03 General

158.04 Acceptance

158.05

158.06

201 – Clearing and Grubbing

201.06 Disposal

204 – Roadway Excavation and Embankment

204.01

204.02 Definitions

204.03

204.04 Preparation for Roadway Excavation and Embankment Construction

204.05 Conserved Topsoil

204.08 Borrow Excavation

204.10 Embankment Construction

204.11 Compaction

204.15 Acceptance

204.16

204.17

206 – Mine Waste Excavation and Consolidation

Description

206.01

206.02 Definitions

206.03 Material

206.04 Mine Waste Excavation and Consolidation

206.05 Construction Compaction

206.07 Temporary Haul Road Construction and Maintenance

206.08 Acceptance

206.09 Measurement

206.12 Payment

301 - Untreated Aggregate Courses

301.03 General

301.05 Compacting

Table 301-1—Acceptance Sampling and Testing Requirements

302 - Minor Crushed Aggregate

302.04 Placing Crushed Aggregate

302.05 Compacting and Finishing Crushed Aggregate

Section 625 – Turf Establishment

625.01 Description

625.03 General

625.04 Preparing Seedbed

625.08 Mulching

625.09 Protecting and Caring for Seeded Areas

625.11 Measurement

Section 703. – Aggregate

703.05 Surface Course Aggregate

Section 713 – Roadside Improvement Material

713.12 Erosion Control Bales, Wattles, Logs, and Rolls

713.17 Temporary Rolled Erosion Control Products

Preface Preface_wo_04_10_2019

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_9_5_2018

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 Contracting Officer 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.

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 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 stricter.

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 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 if 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 Contracting Officer. 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 to 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 Contracting Officer 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 Contracting Officer 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 in its entirety.

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 in its entirety.

Delete Subsections 109.06, 109.07, 109.08, 109.09.

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 fifteen percent (15%) or more.

151 – Mobilization

151.01_01_RPSP_10_19_2022

Add the following to Subsection 151.01:

151.01 Description.

Work also includes providing weed-free equipment to the inspection location and removing and washing all soil off equipment at the end of the project.

Contractor shall clean all seeds, dirt, grease, and debris from equipment prior to mobilizing to the site.

The Contractor shall contact the Contracting Officer at a minimum of seven (7) days in advance of mobilizing equipment and arrange for an offsite weed inspection at a mutually agreed location.

Contractor shall ensure all equipment and vehicles that come in contact with contaminated material, or other solid or liquid hazardous waste shall be decontaminated in an authorized decontamination area as approved by Contracting Officer. The design and construction of the decontamination area includes wastewater collection and storage, and Contractor shall be responsible for any release of wastewater or hazardous substance from the work areas.

Contractor shall also prevent the uncontrolled spread of contaminated materials offsite and outside of the designated work areas. This includes minimizing or preventing tracking of contaminated material from the excavation areas onto access and haul roads. When hauling contaminated material over public rights-of-way, Contractor shall prevent the release of contaminated material from haul vehicles by the use of bed liners, covering loads, and wetting loads, as appropriate. Accidental spills of contaminated material on haul roads shall be removed immediately.

At the end of the project, and prior to moving equipment off the Riley Pass location, the Contractor shall clean all dirt and debris from the equipment.

152 – Construction Survey and Staking

152.00_RPSP_10_21_2022

Add the following to Subsection 152.01:

152.01 Description.

Designs were completed based predominantly on LiDAR survey data from 2021. These LiDAR surface contours are shown as the existing ground contours on the Plans: Protect Government set control points;

Set or reset destroyed control points. Construction staking and quantity measurement surveys shall be performed under the direct supervision of a licensed Professional Land Surveyor for the state in which work is completed.

If UAV surveying is performed, the pilot must have a Part 107 license.

Delete Subsection 152.02 and add the following:

152.02 Qualifications.

Provide technically qualified survey personnel including a licensed Professional Land Surveyor who is licensed in South Dakota.

Add the following to Subsection 152.03:

152.03 Submittals.

Include staking activities in the construction schedule submitted, according to C-5 Submittals. Include the dates and sequence of each staking activity. Surveying submittals shall include raw survey data, tin surfaces, and comparison numbers between prework surveys and finished grade surveys.

Add the following to Subsection 152.04:

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 mark 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.

(d) Closely coordinate with Contractor and Contracting Officer so delays in the excavation of contaminated soils, and other site work caused by Surveyor, are minimized. Contractor may have to plan to perform excavation and other work in multiple areas to avoid delays.

(e) If surveys performed to identify surfaces are performed using an Unmanned Aerial Vehicle (UAV), the following shall apply:

1. The maximum elevation the UAV may attain during survey is 300 feet above ground level.

2. Minimum camera resolution is 16 megapixels.

3. Minimum GSD is 3.97 cm.

Add the following to Subsection 152.05:

152.05 Survey and Staking Requirements.

(c) Include survey data for a distance of 100 feet beyond all disturbance limits.

(d) Ground Control/Check Points for UAV surveying.

Set the following number of ground control/check points:

1. 2 acres or less – 4 points.

2. 2 to 5 acres – 6 points.

3. 5 to 10 acres – 8 points.

4. Larger areas – check points approximately located on a maximum 450 feet square grid pattern.

(e) For surveys performed to identify surfaces either for pay quantities, or any other reason, provide survey submittals for each survey event, including a description of what was surveyed, a .CSV and .XML file of each surveyed surface, a map of the boundary of each surveyed surface, a cut/fill report of each surveyed surface and survey notes. Provide all survey submittals within four (4) business days of each respective surveying event. At a minimum, surveys shall be conducted for the following surfaces:

1. Existing Ground – Survey entire project disturbance boundary area post clearing and grubbing, prior to mine waste excavation.

2. Mine Waste Excavation and Consolidation – Survey following mine waste excavation and placement of embankment consolidation.

(f) Provide topographic maps and 3D scans with the following:

1. One-foot contour intervals,

2. Provide maps in Autodesk AutoCAD format and PDF format.

3. Provide orthographic images georeferenced to the site coordinate system.

(g) Perform additional calculations to verify accuracy of the Government-furnished data. Provide notification of apparent errors in furnished data within four (4) business days. The Contractor shall complete a survey of all areas to be disturbed and compare those surfaces to the existing design, LiDAR data, and existing control points prior to initiating work. The results of the surveys shall be submitted to the Contracting Officer within four (4) business days. Before beginning construction, notify the Contracting Officer of any survey discrepancies with the design.

Contractor shall stake all disturbance limits based on the Plans prior to construction. Contractor shall obtain the disturbance limits in electronic files from the Contracting Officer. At a minimum, initial staking prior to any clearing, grubbing, or excavation shall consist of staking road alignments, grading limits, disturbance limit, and temporary access routes.

(h) Vertical Accuracy for UAV survey.

1. Bare Ground and rock covered areas – 2.5 inches.

2. Vegetated ground cover – 3 inches to 6 inches.

3. Low lying shrubs – omit from final topography.

Report Fundamental Vertical Accuracy (FVA) using National Data Elevation Program (NDEP) methodology and the following statement: Tested (meters, feet) Fundamental Vertical Accuracy at 95 percent (%) confidence level in [type of terrain from above] using RMSEz*1.9600.

(i) Horizontal Accuracy for UAV survey.

1. Required horizontal accuracy is 1.5 inches.

2. Report horizontal accuracy using methods of NDEP.

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

157.00_RPSP_10_21_2022

Add the following to Subsection 157.02:

157.02 Material.

Provide erosion and sediment control materials from a certified noxious weed free source.

Delete Subsection 157.04 in its entirety and replace with the following:

157.04 General.

Fourteen (14) days prior to the start of construction, submit a written plan according to Subsection 104.03 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.

158 – Construction Water

158.00_RPSP_10_21_2022

Delete Section 158 in its entirety and replace with the following:

Description

158.01

This work consists of furnishing and applying water for the dust control caused by work on haul roads and in work areas within the National Forest System Land boundary, and for compaction moisture where required.

Material

158.02 Conform to the Following Subsection.

Water 725.01(c)

Construction Requirements

158.03 General.

Provide an adequate water supply and apply water uniformly across the traveled way and in work areas as necessary to control dust on National Forest roads, on temporary haul routes, and within the construction area. Apply water as needed to material to meet compaction specifications in Section 204.

Uniformly apply water using pressure-type distributors, pipelines equipped with spray systems, or hoses with nozzles.

158.04 Acceptance.

Water will be evaluated under Subsection 106.02. Furnishing and applying water will be evaluated under Subsection 106.02.

Measurement 158.05

Measure the Section 158 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable:

When measuring water for dust control by volume or mass, measure by metering. Submit daily metering tickets to the Contracting Officer.

Payment 158.06

The accepted quantities will be paid at the contract price per unit measurement for the Section 158 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

201 – Clearing and Grubbing

201.00_RPSP_10_21_2022

Delete Subsection 201.06 and replace with the following:

201.06 Disposal.

Provide temporary stockpiles of trees, woody debris, brush, and stumps within the construction disturbance limits and adjacent to the project work sites. Brush, tops, and limbs shall be scattered in approved locations in openings away from standing timber. Logs 5-inches diameter and larger shall be cut into 4-feet lengths and decked at approved locations. Stumps shall be buried at locations indicated on Plans or as directed by the CO.

Timber from National Forest Service lands are the property of the Government.

204 – Roadway Excavation and Embankment

204.00_RPSP_07_03_2024

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

Description

204.01

This work applies to the excavation of unclassified borrow from the roadway cut slope area along NFS 3123 as staked in the field, the embankment in the top five feet (5 ft.) of fill in the channel rehabilitation area, and for the spring drain. This work also includes hauling, stockpiling, placing, sloping, shaping, compacting, and finishing earthen and rocky material.

204.02 Definitions.

(a) Excavation. Excavation consists of the following material used for embankment construction that channel fill is obtained from outside the roadway prism. Borrow excavation includes unclassified borrow and topping.

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

1) Preparing foundation for embankment.

2) Constructing roadway embankments.

3) Benching for side-hill embankments.

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

Material

204.03

Conform to the following Subsections:

Topping 704.05 Unclassified Borrow 704.06 Water 725.01(c)

Construction Requirements

204.04 Preparation for Roadway Excavation and Embankment Construction.

Clear the area of vegetation and obstructions according to Sections 201 and 203.

204.05 Conserved Topsoil.

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

204.08 Borrow Excavation.

Use suitable roadway excavation as staked in the field along NFS Road 3123 for embankment construction at the channel. Do not use borrow excavation outside of the designated areas.

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

Spring borrow shall be 2” open graded aggregate. There is a preapproved source at the State line Quarry in Wyoming.

204.10 Embankment Construction.

Incorporate unclassified borrow from the designated area to complete the embankment. Construct embankments as follows:

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

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

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

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

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

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

2) Distribute rock within the embankment to prevent nesting.

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

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

Place mine using GPS Machine-Mounted Grade Control Equipment as shown on the Plans. The GPS equipment shall use Real Time Kinematic (RTK) technology to achieve survey grade accuracy. The GPS equipment must include an in-cab display which supports background mapping including the design breaklines and contours and instantaneous cut/fill information at the blade. Supply all GPS equipment ready to use, including base stations, radios, repeaters, receivers, and machine mount units.

204.11 Compaction.

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

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

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

(a) Four roller passes of a vibratory roller having a minimum dynamic force of 40,000 pounds (180 kilonewtons) impact per vibration and a minimum frequency of 1,000 vibrations per minute,

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

(c) Eight roller passes of a vibratory roller having a minimum dynamic force of

30,000 pounds (130 kilonewtons) impact per vibration and a minimum frequency of 1,000 vibrations per minute.

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

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

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

2) Fifty to 80 percent retained on a No. 4 (4.75-millimeter) sieve. Classify the material according to AASHTO M 145. Adjust the moisture content of material classified A-1 through A-5 to a moisture content suitable for compaction. Adjust the moisture content of material classified A-6 and A-7 to within 2 percent of the optimum moisture content. Use AASHTO T 99 to determine the optimum moisture content of the portion of the material passing a No. 4 (4.75-millimeter) sieve.

Multiply this number by the percentage of material passing a No. 4 (4.75-millimeter) sieve and add 2 percent to determine the optimum moisture content of the material.

Use nonvibratory rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Compact each layer of material full width according to Subsection 204.11(a)(1).

3) Less than 50 percent retained on a No. 4 (4.75-millimeter) sieve. Classify the material according to AASHTO M 145. For material classified A-1 or A-2-4, determine the maximum density according to AASHTO T 99, Method C.

Adjust the moisture content of material classified A-1 through A-5 to a moisture content suitable for compaction. Adjust the moisture content of material classified A-6 and A-7 to within 2 percent of the optimum moisture content.

Use compression-type or vibratory rollers. Compact each layer of material full width to at least 95 percent of the maximum density. Determine the in-place density and moisture content according to AASHTO T 310, or other approved test procedures. When required, use AASHTO T 224 to correct for coarse particles.

(b) Placement Method 2. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate roller compaction equipment over the full width of each layer until there is no visible evidence of further consolidation or, if when a sheepsfoot roller is used, the roller “walks out” of the layer. Make at least three complete passes. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second. Ensure rollers meet the following requirements:

1) Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds per inch (4.5 kilogram/millimeter) of width of the compression roll or rolls.

2) Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration, specifically designed to compact the material on which it is used.

3) Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 psi (550 Kilopascals).

4) Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 pounds per inch (4.5 kilogram/millimeter) of width of roller drum.

(c) Placement Method 3. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate hauling and spreading equipment uniformly over the full width of each layer until there is no visible evidence of further consolidation. Make at least three complete passes.

(d) Placement Method 4. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate hauling and spreading equipment uniformly over the full width of each layer.

(e) Placement Method 5. Adjust the moisture content of the material to a moisture content suitable for compaction. Compact the complete surface with a bucket of an excavator larger than 39,000 pounds (18 metric ton) Gross Vehicle Weight using a minimum of three blows. Overlap compaction by ½ width of bucket.

(f) Placement Method 6. Adjust the moisture content of the material to a moisture content suitable for compaction. Compact using an approved mechanical tamper for a minimum of three complete passes.

When compacting with rollers or hauling and spreading equipment is not practical, use approved mechanical tampers for a minimum of three complete passes.

204.15 Acceptance.

See Table 204-1 for sampling, testing, and acceptance requirements.

Material for embankment and conserved topsoil will be evaluated under Subsections 106.02 and 106.04.

Excavation and embankment construction will be evaluated under Subsections 106.02 and 106.04.

Measurement

204.16

Measure Section 204 pay items, listed in the bid schedule according to Subsection 109.02, and the following, as applicable.

Excavation. Measure excavation in its original position as follows:

1) Include the following volumes in roadway excavation:

(a) Roadway excavation.

(b) Rock material excavated and removed from below subgrade in cut sections.

(c) Unsuitable material below subgrade and unsuitable material beneath embankment areas when a pay item for subexcavation is not listed in the bid schedule.

(d) Ditches, except furrow ditches measured under a separate pay item.

(e) Conserved topsoil.

(f) Borrow material used in the work when a pay item for borrow is not listed in the bid schedule.

(g) Loose scattered rocks removed and placed as required within the roadway.

(h) Conserved material taken from pre-existing stockpiles and used in Section 204 work, except topsoil measured under 624, and

(i) Slide and slipout material not attributable to the Contractor's method of operation.

2) Do not include the following in roadway excavation:

(a) Overburden and other spoil material from borrow sources.

(b) Over-breakage from the backslope in rock excavation.

(c) Water or other liquid material.

(d) Material used for purposes other than required.

(e) Roadbed material scarified in place and not removed.

(f) Material excavated when stepping cut slopes.

(g) Material excavated when rounding cut slopes.

(h) Preparing foundations for embankment construction.

(i) Material excavated when benching for embankments.

(j) Slide or slipout material attributable to the Contractor's method of operation.

(k) Conserved material taken from stockpiles constructed at the option of the Contractor.

(l) Material excavated outside the established slope limits, and

(m) Road pioneering for the convenience of the Contractor.

Payment

204.17 The accepted quantities will be paid at the contract price per unit of measurement for the Section 204 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Table 204-1 Sampling, Testing, and Acceptance Requirements

Material or Product

(Subsection)

Type of Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Source

Topping (704.05)

Measured and tested for conformance (106.04 & 105)

Classification (1) – AASHTO M 145

1 per soil type and source of material

Processed material Yes Before using in work

Unclassified borrow

(704.06)

Production

Topping (704.05) and (204.11(a))

Measured and tested for conformance (106.04)

Moisture-density – T 99, Method C(2)

1 per soil type, but not less than

1 per each 13,000 yd3 (10,000 m3)

Processed material Yes Before using in work

Density –

AASHTO

T 310 or other approved procedures

1 per 3500 yd2

(3000 m2), but not less than 3 per layer

In-place No Before placement of next layer

Unclassified borrow

(704.06) and (204.11(a))

Moisture-density – T 99, Method C(2)

1 per soil type, but not less than

1 per each 13,000 yd3 (10,000 m3)

Processed material Yes Before using in work

Density –

AASHTO

T 310 or other approved procedures

1 per 3500 yd2

(3000 m2), but not less than 3 per layer

In-place No Before placement of next layer

206 – Mine Waste Excavation and Consolidation

206.00_RPSP_11_20_2025

Description 206.01 This work consists of site preparation, excavating mine waste, hauling, placing, and compacting mine waste in embankment consolidation areas.

Site Preparation and Grading Site preparation shall include grading and compacting the site preparation area as shown on the plans (Plans).

Mine Waste Excavation and Consolidation Work for mine waste excavation and consolidation construction shall include excavating mine waste using GPS-controlled equipment on Bluff B at the locations shown on the Plans and placing, compacting, and shaping the mine wastes as shown on the Plans.

206.02 Definitions.

(a) Mine Waste. Surface investigations have been conducted at the Site to delineate mine waste areas. The mine waste boundaries have been established based on the investigation data. Mine waste excavation areas within the mine waste boundaries are indicated on the Plans. Actual boundaries f mine waste may vary.

Mine waste is defined as native material that has been generated, transported, or reworked during mining activities, which may exhibit arsenic and/or radium-226 concentrations exceeding cleanup goals that have been established for the removal action. Cleanup requirements for the Site define mine waste with one or more of the following characteristics:

• Arsenic > 142 mg/kg

• Radium-226 > 30 pCi/g

(b) Rock Placement. All rock from the mine waste excavation will be placed in the embankment consolidation area as described in section 206.04(b).

Material

206.03 Material.

Conform the following Subsections:

Water 725.01

Construction Requirements

206.04 Mine Waste Excavation and Consolidation.

Construct as follows:

(a) Site Preparation. Site Preparation includes reducing and placing rock as shown in the Plans.

Rock will be reduced to a minimum of a 24-inch largest dimension and evenly spread out in the first lift of Mine Waste Consolidation Area.

(b) Mine Waste Excavation. Prior to Mine Waste Excavation, Contractor shall perform a prework topographical survey of the existing ground surface on all excavation areas and submit the survey data and completed surface models to the CO in accordance with Section 152.

Following Site Preparation, excavate mine waste from the excavation areas and place in the Mine Waste Consolidation Area. Excavate mine waste to the interface with pre-mine native material as indicated by either a change in material color or composition, and/or the presence of vegetation.

Waste depth is estimated to be between 1 foot and 15 feet across the excavation areas.

Transport, place, and compact excavated mine waste in the designated Mine Waste Consolidation Areas.

Black lignite material may be encountered during mine waste excavation. All black lignite material will be placed against the high wall within Mine Waste Consolidation Area.

Grade the perimeter transitions of the excavation and tie into existing undisturbed ground to provide uniform transitions. Apply erosion control methods to the excavation area within fourteen (14) days of excavation completion.

Upon completion of the mine waste excavation, the Contractor shall survey the Excavation areas and submit the survey and completed surface to the Contracting Officer. Surveying shall be according to Section 152.

(c) Mine Waste Consolidation Area. After Site Preparation and prior to any mine waste placement, Contractor shall perform a prework topographical survey of the existing ground surface within the Mine Waste Consolidation Area and submit the survey data and completed surface models to the CO in accordance with Section 152.

Place mine waste in loose layers not exceeding 12 inches.

Place waste material around the reduced rock and fill voids between rocks before placing the next lift of mine waste.

Compact each layer according to Subsection 206.05. Construct the Mine Waste Consolidation Area within the footprints shown on the Plans. Final grade shall be graded to drain and contoured to a smooth surface.

After all mine waste is placed, graded to drain, and compacted in the Mine Waste Consolidation Area, the Contractor shall perform a final as-built topographical survey of the construction site and final grade surface, including all excavation and mine waste consolidation areas. Submit the survey data and completed surface models to the Contracting Officer in accordance with Section 152.

206.05 Construction Compaction

Place mine waste material in horizontal layers not exceeding 12 inch loose thickness.

Submit the following:

(a) Moisture-density characteristics using ASTM D1557/AASHTO T 180 Modified Proctor for mine waste.

Place and compact all mine waste material using the method specified:

(a) Compaction A. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material as practical. Operate roller compaction equipment over the full width of each layer until there is no visible evidence of further consolidation or, if when a sheepsfoot roller is used, the roller “walks out” of the layer.

Make at least three complete passes. Use compression-type rollers at speeds less than 6 feet (1.8 meters) per second and vibratory rollers at speeds less than 3 feet (1 meter) per second.

Ensure rollers meet the following requirements:

1. Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds per inch (4.5 kilogram/millimeter) of width of the compression roll or rolls.

2. Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum dynamic force of 30,000 pounds (130 kilonewtons) impact per vibration, specifically designed to compact the material on which it is used.

3. Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 psi (550 Kilopascals).

4. Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 pounds per inch (4.5 kilogram/millimeter) of width of roller drum.

(b) Compaction B. Place material by end dumping to the specified depth. Level and smooth each layer before placing the next layer. Operate hauling and spreading equipment uniformly over the full width of each layer. Construct a solid layer with adequate compaction by working smaller rock and fines in with the larger to fill voids, and by operating hauling and spreading equipment uniformly over the full width of each layer as the mine waste consolidation area is constructed.

(c) Compaction C. Hauling and Spreading Equipment. Adjust the moisture content to a level suitable for compaction. Compact the material by operating equipment over the full width of the layer.

(d) Compaction D. Roller Compaction. Adjust the moisture content to a level suitable for compaction. Operate rollers over the full width of each layer until visual displacement ceases, but not fewer than three complete passes. Compaction shall meet minimum 85% compaction. Use rollers that meet the following requirements:

1. Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds per square inch of width of the compression roll or rolls.

2. Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum weight of 6 tons, specifically designed to compact the material on which it is used.

3. Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 pounds per square inch.

4. Sheepsfoot, tamping, or grid rollers capable of exerting a force of 250 pounds per square inch of width of roller drum.

Determine the optimum moisture content and maximum density according to ASTM D1557/ AASHTO T 180. Use AASHTO T 224 to correct for coarse particles.

Compact each layer of material full width to at least 85% of the maximum density. Determine the in-place density and moisture content according to AASHTO T310 or other approved test procedures.

(e) Compaction E. Mechanical Tamper. Adjust the moisture content of the backfill material to a moisture content suitable for compaction. Compact each layer with a minimum of three complete passes with mechanical tamper.

206.07 Temporary Haul Road Construction and Maintenance.

Contractor shall prepare a plan and submit a Temporary Haul Road Plan to the Contracting Officer for approval for construction of temporary haul roads. The Plan shall include (at a minimum) a plan view of the proposed roads, erosion control methods, and drainage features. The Haul Road alignment must fall with the haul road disturbance boundaries shown on the plans. Upon approval of the Plan, Contractor shall construct the proposed road.

Construction must include those elements described in the approved Plan and must include clearing and grubbing, stripping, and stockpiling cover soil from the disturbance.

Following construction of the temporary haul roads, Contractor shall maintain temporary haul roads to the extent necessary to support haul traffic. Maintenance may include blading and placement of erionite-free road surfacing, as well as other standard road maintenance items. The Temporary Haul Road accessing the fill channel from the #3120 road shall be left in place. All other temporary roads shall be reclaimed.

Prior to project completion and demobilization from the site, Contractor shall grade primary and access road surfaces and replace road surfacing (if used) as directed by the Contracting Officer.

206.08 Acceptance.

See Table 206-1 for sampling and testing requirements.

Mine waste excavation and embankment consolidation will be evaluated under Subsection 106.04.

206.09 Measurement.

Measure the Section 206 items listed in the Schedule of Items according to Subsection 109.02.

Measure items by surveying the Site Preparation Area, mine waste excavation areas, and consolidation surfaces. Survey according to Section 152.

206.12 Payment.

The accepted quantities will be paid at the Contract price per unit of measurement for the Section 206 pay items listed in the Schedule of Items. Payment will be full compensation for the work prescribed in this Section. See Section 109.05.

Table 206-1 Sampling and Testing Requirements

Material or Product

Type of Acceptance (Subsection)

Characteristics Test Method Specifications

Sampling Frequency

Point of Sampling

Reporting Time

Mine Waste

Measured and tested for conformance (106.04)

Density

AASHTO T310

or other approved procedures

1…