Attachment 2 Project Specifications.pdf

PROJECT SPECIFICATIONS

RILEY PASS URANIUM MINE SITES

BLUFF A RECLAMATION PROJECT

Custer Gallatin National Forest

February 2020

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

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

152.01 Description

152.03 Submittals

152.04 General

152.05 Survey and Staking Requirements

155 - Schedules for Construction Contracts

Delete Section 155

156 - Public Traffic

156.01 Description

156.02 Material

156.03 General

156.04 Temporary Traffic Control

156.06 Acceptance

156.07 Measurement and Payment

157 – Soil Erosion and Sediment Control

157.02 Material

157.04 General

158 – Watering for Dust Control

158.03 General

201 – Clearing and Grubbing

201.06 Disposal

204 – Excavation and Embankment

204.01 Description

204.02 Definitions

204.03 Material

204.04 Mine Waste Excavation, Mine Waste Consolidation, and Landform Construction

204.05 Mine Waste Consolidation and Cover Soil Compaction

204.06 Shaping and Final Grading

204.07 Internal Haul Road Construction and Maintenance

204.08 Verification Testing

240.09 Acceptance

204.10 Measurement

Section 625 – TURF ESTABLISHMENT

625.01 Description

625.03 General

625.04 Preparing Seedbed

625.06 Fertilizing

625.07 Seeding

625.08 Mulching

625.09 Protecting and Caring for Seeded Areas

625.11 Measurement

Section 713 – ROADSIDE IMPROVEMENT MATERIAL

713.01 Topsoil

713.01 Cover Soil

713.03 Fertilizer

713.04 Seed

713.05 Mulch(a)

713.05 (e) Mature Compost

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 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 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 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 15% or more.

152 – Construction Survey and Staking

152.01_01_RPSP_01_10_2018

Add the following to Subsection 152.01:

152.01 Description.

Designs were completed based predominantly on LiDAR survey data from a 2012 Aerometrics, Inc.

flight, published on January 14, 2013. These LiDAR surface contours are shown as the existing ground contours on the Drawings. Due to the age of the LiDAR data, some existing features shown on the Drawings may not be shown as they are currently in the field. 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.

Add the following to Subsection 152.03:

152.03 Submittals.

Include staking activities in the construction schedule submitted according to C- 6 Submittals. Include the dates and sequence of each staking activity.

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 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 that 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 that the UAV may attain during survey is 300 feet above the 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. 2-5 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

(m) 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 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 after clearing and grubbing and before waste removal

2. Excavated surface following waste removal

3. Subgrade surface following regrading, and

4. Final grade following cover placement.

(n) Provide topographic maps and 3d scans with the following:

1. One-foot contour intervals

2. Provide maps in Autodesk AutoCAD format and Adobe pdf form at

3. Provide orthographic images georeferenced to the site coordinate system

(o) Perform additional calculations for convenient use of Government-furnished data. Provide notification of apparent errors in furnished data within 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 shall be submitted to the Contracting Officer within 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, and temporary access routes.

(p) 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.

(q) Horizontal Accuracy for UAV survey.

Required horizontal accuracy is 1.5 inches.

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.

156 - Public Traffic

156.00_RPSP_08_2_2019

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

Description

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

Material

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

Permanent Traffic Control 633 Traffic Signing and Marking Material 718 Concrete Barriers and Precast Guardwalls 618 Temporary plastic fence 710.11

Construction Requirements

156.03 General. Accommodate traffic according to MUTCD, approved traffic control plan and this section. Perform work in a manner that ensures safety and convenience of the public. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. Delays may not exceed <60> minutes at any one time followed by an open period of no less than <10> minutes. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

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

Post construction signs and traffic control devices in conformance with MUTCD and Forest Service EM 7100-15. All required signs will be in place and approved prior to beginning work on project.

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

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

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

(b) All detours outside of clearing limits will be approved in writing by the Contracting

Officer as part of the traffic control plan.

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

(d) Relocate temporary traffic control devices as necessary.

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

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

(g) Keep temporary traffic control devices clean.

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

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

Do not use flags. Flaggers must wear high visibility safety apparel as required by

MUTCD 6E.02.

156.06 Acceptance.

Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment

156.07 Measurement and Payment

Do not measure Public Traffic for payment. Payment for contract work is provided indirectly. See Subsection 109.05.

157 – Soil Erosion and Sediment Control

157.00_RPSP_04_27_2019

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.

Thirty (30) 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 – Watering for Dust Control

158.00_RPSP_08_2_2019

Add the following to Subsection 158.03:

158.03 General.

The Contractor may supply a water source for water to be used for dust control and other purposes or the Contractor may choose to use a Government-supplied water source (Brown’s Pond). All proposed water sources must be approved by the Contracting Officer. Payment for Dust Control is only for applying water on National Forest System land roads or for water used in compacting mine wastes.

201 – Clearing and Grubbing

201.00_RPSP_08_2_2019

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. Trees, woody debris and stumps shall be cut into sections 4 feet or less in length. Dispose of all trees, woody debris and brush, except stumps, by evenly spreading on the finished grade disturbed areas. Dispose of stumps by chipping and spreading chips at a location approved by the Contracting Officer. Do not place woody debris and brush in channels, road ditches, or near culvert inlets or outlets.

Deck all logs larger than 6” diameter at the location shown on the drawings. Timber from National Forest Service lands is the property of the Government.

204 – Excavation and Embankment

204.00_RPSP_08_2_2019

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

204.01 Description.

This work consists of excavating mine waste with GPS machine-controlled equipment, hauling, placing, and consolidating mine waste in mine waste consolidation areas; landform construction; excavating, hauling and placing Government provided cover soil borrow; and final site grading using GPS machine-controlled equipment.

Work for mine waste excavation and consolidation shall include excavating mine waste on Bluff A at the locations shown on the Drawings, loading and hauling wastes to the mine waste consolidation areas, and placing, compacting, and shaping the mine wastes in the mine waste consolidation areas.

On completion of mine waste excavation, the Contract Officer or the Contracting Officer’s Engineer will need to confirm that sufficient depth has been excavated to adequately remove mine waste excavation.

The Contractor will work closely with the Contracting Officer to ensure that there is adequate time for testing between mine waste excavation and further work on exposed subgrade. In some case, the Contracting Officer may direct the Contractor to excavate additional wastes below the subgrade shown on the drawings.

After mine waste excavation has been completed and tested as described above, the Contractor will perform regrading of the subgrade. Work for regrading shall include excavating material from below the subgrade and placing and compacting the excavated materials at other locations within the excavation limits.

Work for Government provided cover soil borrow shall include excavating cover soil borrow material, loading, and hauling borrow material to the placement areas at Bluff A, and shaping the cover soil borrow material. The Contractor shall develop the Government provided borrow site in accordance with the Drawings. The Contractor shall reclaim the Government provided borrow site in accordance with Section

105.06 and this Section. The Government provided borrow source shall be reclaimed by grading a smooth, naturally appearing surface with no slopes greater than 10%. All surfaces must drain freely.

Work for final grading shall include grading bluff surfaces using GPS machine-controlled equipment to achieve the ultimate final elevations in accordance with the Drawings. The Contractor should be aware that the final grade surface is a complex landform with many ridges, subridges, and other features that will require considerable time and effort to complete correctly.

204.02 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 are excavation areas within the mine waste boundaries as are indicated on the Drawings. Actual boundaries and depths of mine waste may vary.

Mine waste is defined as native material that has been generated, transported, or reworked during mining activities, which exhibits arsenic and/or radium226 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 > 142mg/kg

Radium-226 > 30pCi/g

(b) Mine Waste Consolidation Area Construction. Mine waste consolidation area construction consists of placing and compacting mine wastes in the mine waste consolidation areas indicated on the Drawings.

(c) Rock Salvage. Rock salvage includes salvaging rocks larger than 24 inches along their intermediate axis from mine waste excavation areas.

(d) Government Provided Cover Soil Borrow. Material excavated from within the Government provided cover soil borrow areas will be used to cover mine waste excavation and mine waste consolidation areas and to create natural landforms within Bluff A.

Material

204.03 Material.

Conform the following Subsections:

Water 725.01 Cover Borrow Soil 713.01

Construction Requirements

204.04 Mine Waste Excavation, Mine Waste Consolidation, and Landform Construction.

Construct as follows:

(a) Mine waste excavation. Excavate mine waste to the elevations as shown on the Drawings using GPS Machine-Mounted Grade Control Equipment. 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.

Transport excavated mine waste to the mine waste consolidation areas, and place and compact the mine waste in accordance with these Specifications and as indicated on the Drawings.

Salvaged rocks (>24 inches) shall be selectively removed, stockpiled, and placed following final grading as shown on the Drawings. Rock salvage and placement is paid indirectly.

Minor excavation of non-waste material outside of the mine waste boundaries is required to transition re-grade areas to existing adjacent grade elevations, as indicated on the Drawings. Place this excavated non-waste material within the grading areas as cover soil material.

(b) Mine Waste Consolidation. Place mine waste in layers not exceeding 12 inches using GPS Machine-Mounted Grade Control Equipment as shown on the Drawings. 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. Compact each layer according to Subsection 204.11 before placing the next layer using Compaction Method A. Construct the mine waste consolidation areas within the footprints and to the lines, grades, and cross-sections shown on the Drawings.

(c) Subgrade Regrading. Following completion of mine waste excavation, regrade the surface and excavate additional material where shown on the drawings. Place and compact the additional excavated material at the locations shown on the drawings. Place material in lifts not to exceed 12 inches using compaction method A.

Government Provided Cover Soil Borrow Excavation. Conduct testing and analysis of soil borrow as described in Table 204-1 and submit testing results to the Contracting Officer. Cover soil borrow will be excavated from the Government provided borrow source, transported to Bluff A, and placed 18-inches thick as shown on the Drawings. Compact using Compaction Method C.

Place cover soil borrow over the mine waste excavation and mine waste consolidation areas to form natural landforms as shown on the Drawings. Limit disturbance associated with borrow activities to those necessary for developing, loading, and hauling the borrow material as shown on the Drawings.

204.05 Mine Waste Consolidation and Cover Soil Compaction.

Place and compact all mine waste material using the method specified in the Schedule of Items:

(a) Compaction A. Place material by end dumping to the specified depth. Adjust the moisture content of the material to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate 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.

(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 embankment 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. 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.

(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.

204.06 Shaping and Final Grading.

Slope, shape, and construct final grade surfaces as follows. Place Government provided cover soil borrow in accordance with the Drawings prior to completing final grading.

(a) Shaping. Shape the cover soil surface to a smooth surface and to the cross-section and landform required as shown on the Drawings. At the ends of cuts and at intersections of cuts and embankments, adjust slopes in the horizontal and vertical places to blend into each other or into the natural ground.

(b) Final Grading. Bring the cover soil to the lines, grades, and cross-sections shown on the Drawings using GPS Machine-Mounted Grade Control Equipment. 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.

The final grading consists of completion of slopes, ridges, subridges, valleys, channels, and ditches as shown on the Drawings. Construction tolerances on the ridges, subridges, and other slopes are plus or minus 0.5 foot vertically and within 1 foot laterally from the design surface.

Construction tolerances for valleys and channel bottoms are plus or minus 0.1 foot vertically and within 1 foot laterally of the design surface.

The Contracting Officer will provide any survey control points and Digital Terrain Model (DTM) files for the design surface in an electronic format compatible with the Contractor’s GPS equipment.

Finish side slopes to a reasonable uniform but rough surface that blends to the contours or surrounding undisturbed ground. Scarify smooth surfaces perpendicular to the slope of the ground.

204.07 Internal Haul Road Construction and Maintenance.

Contractor shall prepare a plan and submit it to the Contracting Officer for approval for construction of temporary haul roads leading from a point on existing FSR 31231 near Bluff A to the borrow area through either of the corridors shown on the drawings. Contractor’s plan shall also include a description of temporary haul roads constructed to reach the waste removal areas and the consolidation area. The plan shall include (at a minimum) a plan view of the proposed roads, a profile of the proposed roads clearly showing grades, typical cross sections, turnouts, road surfacing, cut and fill zones and drainage features.

Upon approval of the plan, Contractor shall construct the proposed road.

Construction must include those elements described in the approved plan and also must include clearing and grubbing, stripping and stockpiling topsoil from the disturbance corridor and, on completion of the road, spreading of the stockpiled topsoil on all disturbed surfaces except the traveled way. Construction must also include seeding and fertilizing on all the disturbed surfaces except the traveled way as described in Section 625.

Following construction of the temporary haul roads, Contractor shall maintain temporary haul roads to the extent necessary to support haul traffic. Maintenance shall include blading and placement of erionite-free road surfacing (if any). Prior to project completion and demobilization from the site, the Contractor shall grade the road surface and replace road surfacing (if any was used) as directed by the Contracting Officer.

Construction, maintenance, and reclamation of temporary Internal Haul Roads is indirectly paid.

204.08 Verification Testing.

The Contracting Officer will conduct verification testing following re-grading and placement of cover soil prior to composting, fertilizing, seeding, mulching, and placement of woody debris on the re-grade surface. Contractor should be aware that this may result in a delay in the Contractor’s operations while the Contracting Officer performs testing. The Contractor and the Contracting Officer shall closely coordinate operations to minimize this delay. In some cases, based on the verification sampling, the Contracting Officer may direct the Contractor to perform additional work such as placement of additional cover soil borrow.

The Contracting Officer may also perform testing after excavation of mine wastes and before regrading or backfill. In some cases the Contracting Officer may direct the Contractor to perform additional waste excavation prior to regrading or backfill with Cover Soil.

240.09 Acceptance.

See Table 204-1 for sampling and testing requirements.

Mine waste excavation, mine waste consolidation, and cover soil construction will be evaluated under Subsection 106.02.

204.10 Measurement.

Measure the Section 204 items listed in the Schedule of Items according to Subsection 109.02.

Quantities provided in the Schedule of Items represent the in-place, compacted volume of mine waste in the mine waste consolidation areas. Quantities provided in the Schedule of Items represent the in-place volume of cover soil. Quantities of Regraded Material represent the in-place excavated volume of regraded material prior to its removal. No measurement of regraded material placement will be made.

Development and restoration of Government borrow site, internal haul roads, and rock salvage and placement is indirect to other work items. No separate measurement or payment shall be made for these items.

204.11 Payment.

The accepted quantities will be paid at the Contract price per unit of measurement for the Section 204 pay items listed in the Schedule of Items. If there is not a pay item for the above work in the Schedule of Items, payment is indirect to the other work items. Payment will be full compensation for the work prescribed in this Section. See Section 109.

Table 204-1 Sampling and Testing Requirements

Material or Product

Type of Acceptance (Subsection)

Characteristics Test Method Specifications

Sampling Frequency

Point of Sampling

Reporting Time

Cover soil

Borrow

Measured and tested for conformance (106.04)

Classification AASHTO T27 and T11

1 per 5 acres of borrow surface area, minimum of 1 per borrow source

Source of material

Before using in work

Measured and tested for conformance (106.04)

Metals Concentration

Sodium Adsorption Ratio

(SAR)

Soil Acidity (pH)

Specific Conductance

EPA 6010

EPA 6010

USDA 21A

ASA 10-3.3

1 per 5 acres of borrow surface area, minimum of 1 per borrow source

Source of material

Before using in the work

Measured and tested for conformance

(106.04)

Placed Depth Hand

Measurement

One in each excavation area or 500 square feet whichever is more frequent

Finished ground in excavation areas

Before completing fill in each excavation area

Visual Inspection (106.02)

Compaction Moisture Content

Visual - In-place Before placing next layer

Mine Waste Visual Inspection (106.02)

Compaction Moisture Content

Visual - In-place Before placing next layer

Section 625 – TURF ESTABLISHMENT

625.00_RPSP_08_2_2019

Add the following to Section 625.01.

625.01 Description.

Work also includes applying compost 1 inch thick to all re-grade areas on Bluff A and the Consolidation Area and incorporating compost into the cover soil to a depth of 6 inches.

Delete Subsection 625.03 and replace with the following.

625.03 General.

All revegetation crew personnel must have current HAZWOPER training and provide certificates.

Apply turf establishment to the areas shown on the Drawings or in the work list within 15 days after completion of ground disturbing activities and waste verification sampling. Seeded areas damaged by construction activities shall be reseeded within 10 days of the damage and prior to the placement of mulch.

Seed as soon as possible after work is completed, unless otherwise specified in writing by the Contracting Officer. Do not seed during windy weather or when the ground is excessively wet or dry, frozen, or snow covered.

Delete Subsection 625.04 and replace with the following.

625.04 Preparing Seedbed.

Grade the seeding area to line and grade. Remove weeds, sticks, rocks 6 inches in diameter and larger, and other debris detrimental to application, growth, or maintenance of the turf. Rip areas heavily compacted by heavy equipment and haul traffic to a depth of at least 18 inches prior to disking.

Delete Subsection 625.05 and replace with the following.

625.05 Composting.

Apply compost prior to seeding. Apply compost evenly with a mechanical (compost or manure) spreader calibrated to apply compost at a thickness of 1 inch on Bluff A grading areas. Do not apply compost to areas of standing water, when the wind may inhibit even application, or when the ground is frozen. Use the appropriately sized disc and calibrate the disc implement to ensure that the compost is incorporated to a depth of 6 inches. Compost must comply with the requirements of Subsection 713.05 (e), Mature Compost.

Delete first sentence of Subsection 625.06 and replace with:

625.06 Fertilizing.

Apply fertilizer using the dry method. Apply fertilizer at the rate specified in Subsection 713. Submit all invoices with the percentages of the nutrients and the volume of the fertilizer delivered to the site.

Add the following to Subsection 625.07 :

625.07 Seeding.

Add the following after Subparagraph (b).

The specified seed mix in Subsection 713.04 is designed to provide species for both sandy and clay dominated soils. The rates are for drill seeding. If the seeds are to be broadcast or hydraulically placed over the site these rates should be doubled. All broadcast sites should be rolled or dragged to place the seeds in closer contact to soil. Hand rake around large placed rocks and other features that prevent rolling or dragging.

Delete this Subsections 625.08(a) and 625.08(b) and replace with the following.

625.08 Mulching.

(a) Dry Method. Spread all mulch material, except wood and grass cellulose fibers, by a mulch spreader utilizing forced air to blow the mulch material onto the seeded area. Apply straw mulch at a rate of 3200 pounds per acre. Anchor the mulch material with an approved stabilizing emulsion tackifier.

Submit product information on the stabilizing emulsion tackifier at least 10 days in advance of the work for review and approval. Do not mark or deface structures, pavements, utilities, or plant growth with tackifier.

(b) Hydraulic Method. Apply mulch in a separate application from the seed using hydraulic-type equipment according to Subsection 625.08(b).

Areas that are inaccessible to mulching equipment shall be mulched by hand. Apply mulch uniformly over the entire disturbed area. Mulch used on the project must meet the requirements of Subsection 713.05(a), be certified noxious weed free, and be approved by the Contracting Officer.

Delete the first sentence of Subsection 625.09 and add the following.

625.09 Protecting and Caring for Seeded Areas.

Protect and care for seeded areas until final acceptance.

Delete Subsection 625.11 and replace with the following.

625.11 Measurement.

Measure the Section 625 items listed in the Schedule of Items according to Subsection 109.02.

Seeding, fertilizing, composting, and mulching are measured based on a contract quantity basis. The contract quantities are listed in the Schedule of Items.

Seedbed preparation is considered incidental to other work items. No separate measurement or payment shall be made for ripping, disking, or harrowing.

Section 713 – ROADSIDE IMPROVEMENT MATERIAL

713.00_RPSP_08_2_2019

Delete the term “topsoil” and replace with “cover soil” throughout Section 713.

713.01 Topsoil.

Delete Subsection 713.01 and replace with the following.

713.01 Cover Soil.

Cover soil will be hauled from Government provided borrow source. Furnish material free of excess moisture, muck, frozen lumps, roots, sod, or other deleterious material.

(a) Government Provided Cover Soil Borrow. Government provided cover soil borrow shall be used at locations as shown on the Drawings. Government provided cover soil borrow shall conform to the following:

(1) Cover soil Gradation Specification

Sieve Size Percent by Mass Passing Designated

Sieve (AASHTO T 27 & T 11)

12 inch 100

No. 200 35 maximum

(2) Cover soil Suitability

Property Requirement

Soil Acidity (pH) 6.0 to 8.5

Arsenic < 142 parts per million (ppm)

Cadmium <4 ppm

Copper < 100 ppm

Lead < 100 ppm

Zinc < 250 ppm

Sodium Adsorption Ration (SAR) < 12

Specific Conductance (SC) < 6 decisiemens per meter (dS/m)

Add the following to Subsection 713.03.

713.03 Fertilizer.

Apply fertilizer at the rate of 150 pounds per acre. Insure that the fertilizer meets the following chemical analysis:

Nutrient Percent Nitrogen, N 20 Phosphorus, P205 27 Potassium, K 5 Elemental Sulfur 6 Gypsum 0.25

Add the following to Subsection 713.04.

713.04 Seed.

Furnish and apply the following kinds and amounts of pure live seed.

Common Name Scientific Name Variety Rate (lb/acre) Western wheatgrass Pascopyrum smithii Rosana* 3.0 Slender wheatgrass Elymus trachycaulum Pryor 1.0

Bluebunch wheatgrass Pseudoroegnaria spicatum Secar 2.0 Canada wildrye Elymus Canadensis Mandan 1.5 Green needle grass Stipa viridula Lodorm 2.0

Prairie sandreed Calamovilfa longifolia Goshen 1.0 Little bluestem Schizachyrum scoparium Badlands 1.0 Side oats gama Bouteloua curtipendula Pierre 2.0 Maximilian Sunflower Helianthus maximillianii 1.0 Purple Coneflower Echinacea angustifolia 2.0 Prairie Coneflower Ratibida columnifera 0.5 Leadplant Amorpha canescens 1.0 Prairie Sage Artemisia ludoviciana 0.1 Winterfat Krascheninnikovia lanata 1.0

TOTAL WEIGHT OF SEED (pure live seed)

19.1 *or Rodan

This seed mix is designed to provide species for both sandy and clay dominated soils. When available, use locally collected seed and seed sources for the seed mix requirements. This includes seeds collected within the North Cave Hills Forest boundary or within 100 miles of the site. The rates are for drill seeded vegetation. If the seeds are to be broadcast over the site these rates should be doubled. All broadcast sites should be rolled or dragged to place the seeds in closer contact to soil. Seed must be certified noxious weed free and approved by the Contracting Officer. Seeding shall occur within 15 days after completion of ground disturbing activities. See 625.07 for application methods. Any proposal for seed substitutions shall be submitted in writing a minimum of 7 days in advance of seeding for Contracting Officer review and approval.

Delete Subsection 713.05(a) and replace with the following.

713.05 Mulch(a).

Furnish certified weed free straw from oats, wheat, rye, or other grain crops, or grass hay that is free from mold or other material or other approved mulch material. Furnish straw or grass hay in an air-dry condition suitable for placing with mulch blower equipment. Apply mulch per Section 625.08(a).

Delete Subsection 713.05(e) and replace with the following.

713.05 (e) Mature Compost.

Compost used on the project must be certified noxious weed free and approved by the Contracting Officer.

Furnish partially decomposed organic material cured for 4 to 8 weeks at required temperatures and turned a minimum of 5 times. Maturity is indicated by temperature stability and soil-like odor.

Furnish friable, dark brown, weed-free, and pathogen-free mature compost. The following specifications for compost are applicable for compost feedstock, including manure:

% Particle size by volume: 90% (by volume) passing 1-inch screen % Moisture by wet weight: 30% - 55% % Organic Matter by dry weight: 30% minimum pH: 5.0 to 8.5…