AMAX Final Design Submission Update~1.pdf

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ILLINOIS DEPARTMENT OF NATURAL RESOURCES (IDNR)

PROJECT REQUIREMENTS & SPECIFICATIONS

Project Name: Amax Coal Culvert

Project Number: AML-IFuE-2419

Project Location(s): Village of Vermont

PROJECT NARRATIVE:

The Amax Coal Company project site is located approximately 3.5 miles northeast of the Village of

Vermont in Fulton County, Illinois, along East Quarter Road. The site encompasses roughly 0.25 acres and is historically tied to the Sun Spot Mine, which was operated by Delta Coal Company beginning in

1962 and later by AMAX Coal Company until mining ceased in 1983. Mining activities at this location occurred prior to the enactment of the Surface Mining Control and Reclamation Act (SMCRA) of 1977, and only minimal reclamation efforts were undertaken following mine closure.

Currently, the site contains two corrugated metal culverts, each approximately 94 feet in length and 7 feet in diameter, which have experienced significant structural failure. One culvert has collapsed and is protruding upward at an angle, while the second has shifted and partially overlies the first. These failures are attributed to subsurface erosion and are further exacerbated by Acid Mine Drainage (AMD), which has accelerated corrosion. Additional concerns include sediment washout, exposed pipe ends, and destabilized stream banks, all of which pose risks to the integrity of East Quarter Road and adjacent properties.

The proposed reclamation approach includes removal of both deteriorated culverts and replacement with noncorrosive HDPE culverts. Stream banks will be stabilized, and RR-4 stone riprap will be placed at the inlet and outlet ends of the new culverts. A temporary cofferdam will be constructed to manage stream flow during installation. Final restoration efforts will include grading, and erosion control to ensure long-term site stability.

SCOPE OF WORK:

Required work includes removing two severely deteriorated corrugated metal culverts, replacing them with noncorrosive alternatives, stabilizing stream banks with riprap, constructing a temporary cofferdam for flow control, and completing grading, erosion control, and site restoration to prevent future failures.

Appendix A contains the plans for this project.

STARTING DATE OF THE CONTRACT

Weather permitting, work on the project shall commence within 30 calendar days of notice to proceed. The Contractor shall contact the Department to notify the Department of the anticipated construction schedule.

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CONSTRUCTION ENDING DATE

Work on this project shall be substantially completed by December 31, 2026.

Final clean-up, final inspection, any alterations, repair, remedial or holdover work, reseeding, and submission of the final pay request shall be completed prior to the contract ending date.

CONTRACT ENDING DATE

This contract shall end on December 31, 2026.

Project Requirements:

EXISTING PAVEMENTS

Existing on-site roadways may be used for construction traffic. The Contractor shall provide temporary additional roads needed for required construction access, maintain existing roads throughout construction, and restore to original or better condition at completion of work.

BASE AND TOPPING MATERIALS

For temporary construction which will be removed when no longer needed for construction purposes, and all affected areas restored to original or better condition at the completion of work, the selection of these materials is at the Contractor's option, unless otherwise specified.

FIELD ENGINEERING

The Contractor shall provide and pay for all field engineering services required for the project, including:

1. Lay-out and field stake the project’s construction limits, unless otherwise specified on the plans, to the satisfaction of the Engineer.

2. Survey work required in execution of the project.

3. Civil, structural or other professional engineering services specified, or required to execute the Contractor's construction methods.

Survey Reference Points:

Existing basic horizontal and vertical control points for the project are identified on the plans and will be identified by the Engineer for the Contractor’s use. The Contractor shall locate and protect control points prior to starting site work and preserve all permanent reference points during construction. The Contractor shall protect any identified property corners during construction.

Project Survey Requirement:

The Contractor shall use established benchmarks on-site as identified on the plans. The

Contractor shall establish construction limits, lines and levels, locate and lay-out by

P a g e | 3 instrumentation and similar appropriate means, all site improvements. From time to time, the

Engineer may verify layouts by same methods.

Initial, periodic, and final cross-sectioning of borrow areas for payment may be performed by the

Engineer.

Records:

The Contractor shall maintain complete, accurate records, computations and field books of all control and survey work as it progresses. These shall be kept on-site for use of and reference by the Engineer.

Submittal:

The Contractor is required to use a professional land surveyor licensed in the State of Illinois. The

Contractor shall submit the name, address, and a copy of the surveyor’s license prior to beginning surveying work.

OWNER OCCUPANCY

Owners will occupy premises during entire construction period for conduction of their normal operations. The Contractor shall cooperate with Owners in scheduling operations to minimize conflict and to facilitate Owner's usage.

Project Specifications:

Those Sections and Articles of the "Standard Specifications for Road and Bridge Construction," adopted

January 1, 2022, by the Illinois Department of Transportation (IDOT); as amended and supplemented by the "Supplemental Specifications and Recurring Special Provisions," adopted January 1, 2026

(hereinafter referred to collectively as "Standard Specifications"), that are referenced in these bid documents are incorporated by reference. (The Standard Specifications are available on-line at IDOT’s web site or can be purchased from IDOT.)

In the application of the Standard Specifications to this Contract, references to the Department of

Transportation shall be interpreted to mean the Illinois Department of Natural Resources; Office of

Mines and Minerals; Abandoned Mined Lands Reclamation Division (AMLRD).

The following Sections of the IDOT Standard Specifications have been modified for this project by the

AMLRD and are included below and on the following pages and govern contract work at or on this project:

SECTION 101 – Definition of Terms

SECTION 107 – Legal Relations and Responsibility to the Public

SECTION 201 – Special Clearing

SECTION 202 – Abandoned Mine Site Excavation

SECTION 204 – Borrow and Furnished Excavation

SECTION 205 – Mine Site Compaction

SECTION 250 – Seeding

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SECTION 256 – Incorporation - Limestone and Mulch

SECTION 280 – Temporary Erosion and Sediment Control

SECTION 616 – Cofferdams

SECTION 671 – Mobilization

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AMLRD SUPPLEMENTAL SPECIFICATION FOR

SECTION 101. DEFINITION OF TERMS

Whenever in these specifications or in other contract documents the following terms or pronouns in place of them are used, the intent of meaning shall be interpreted as follows:

Article 101.03 Award. Revise as indicated:

The decision of the Illinois Department of Natural Resources; Office of Mines and Minerals;

Division of Abandoned Mined Lands Reclamation to accept the proposal of the lowest responsible bidder for the work, subject to the execution and approval of a satisfactory contract therefore and bond to secure the performance thereof, and to such other conditions as may be specified or otherwise required by law.

Article 101.14 Department. Revise as indicated:

The Department of Natural Resources of the State of Illinois with its principal offices of business at Springfield.

Article 101.16 Engineer. Revise as indicated:

The Director of the Department of Natural Resources of the State of Illinois; or his authorized representative limited by the particular duties entrusted to him.

Article 101.35 Right of Way. Revise as indicated:

Right of way shall be replaced by construction limits, except when used in conjunction with right of way markers or highways.

Article 101.39 Roadway. Revise as indicated:

Roadway shall be replaced by site. Slope limits of embankments will be replaced by proposed lines and grades.

Article 101.56 Gob. Add the following:

Coarse textured mine waste material, generally acidic, from a coal cleaning process. This material is composed of rock, shale, pyritic material and varying amounts of coal. The material varies considerably in its moisture content, texture, stable angle of repose and bearing capacity.

Article 101.57 Mine Spoil. Add the following:

A mixture of various soil and rock material as a result of the removal of overburden to expose the coal in surface mining. The material varies considerably in its' moisture content, texture, stable angle of repose and bearing capacity.

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Article 101.58 Slurry. Add the following:

A mixture of coal fines and fine coal waste material resulting from a coal cleaning process. This material is composed of water, silts, clays, pyritic material and coal. The material varies considerably in its' moisture content, stable angle of repose, shear strength and bearing capacity.

End of Revisions to SECTION 101.

SECTION 107. LEGAL REGULATIONS AND RESPONSIBILTY TO PUBLIC

Article 107.27 Insurance (delete and replace with the following)

The Contractor shall obtain and thereafter keep in force the following insurance coverage provided by insurance companies acceptable to the Department and authorized to transact business under the laws of the State of Illinois. The insurance companies providing coverage shall be rated in the Best's

Key Rating Guide. The Department will accept companies with a rating not lower than B+ provided the financial size category is VII or larger. Companies rated A- or better shall have a financial size category of not less than VI. Coverage limits shall be written at not less than the minimum specified in this Article. Higher minimum limits and additional coverage may be specified by a special provision elsewhere in the contract. Whether stated in this Article or elsewhere, the Department does not warrant the adequacy of the types of insurance coverage or the limits of liability specified.

(a) Workers Compensation and Employers Liability.

(1) Workers compensation shall be provided in accordance with the provisions of the Illinois

Worker's Compensation Act, as amended. Notwithstanding the rating and financial size categories stated in this Article, coverage may be provided by a group self-insurer authorized in Section 4(a) of the Act and approved pursuant to the rules of the Illinois

Department of Insurance.

(2) Employers Liability

a. Each Accident $500,000

b. Disease - policy limit $500,000

c. Disease - each employee $500,000

(b) Commercial General Liability.

Required liability insurance coverage shall be written in the occurrence form and shall provide coverage for operations of the Contractor; operations of Sub-Contractors (contingent or protective liability); completed operations; broad form property damage and hazards of explosion, collapse and underground; and contractual liability. The general aggregate limit shall be endorsed on a per project basis.

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(1) General Aggregate Limit $2,000,000

(2) Products - Completed Operation Aggregate Limit $2,000,000

(3) Each Occurrence Limit $1,000,000

The coverage shall provide by an endorsement in the appropriate manner and form, the

Department, to its officers, agents and employees shall be named as additional insureds with respect to the policies and any umbrella excess liability coverage for occurrences arising in whole or in part out of the work and operations performed. The Department may accept a separate owner's protective liability policy in lieu of the Department, it's officers, and employees being insured on the Contractor's policy.

(c) Owners and Contractor’s Protective (OCP) Liability.

The Contractor shall provide an OCP policy covering the property owner(s) of the site where the work is to be performed. In the case of multiple owners, all the landowners may be listed as additional insurers on the same policy.

This project will require OCP Policy coverage for 1 property owner.

If the Contractor chooses to put the Department on an OCP (in lieu of placing the Department as an additional insured on the Commercial General Liability - see (b) above), then the Department should be listed as the insured, with all landowners listed as additional insured(s). The amounts of insurance shall be as follows:

BODILY INJURY LIABILITY PROPERTY DAMAGE LIABILITY

Each Occurrence Each Occurrence Aggregate

$1,000,000 $500,000 $1,000,000 or

COMBINED SINGLE LIMIT $1,000,000

The required OCP policy shall contain the following endorsement:

"Each named insured shall be provided full coverage under this policy without regard to the fact that such named insured is not in contractual privity with the Contractor. It is understood that the construction operations are performed for and on behalf of the Department, with the consent of the property owner(s)-insured(s). Coverage under this policy with respect to liability arising out of operations shall not be denied to any named-insured because of his passive relationship to the Contractor".

When any named insured is a corporation, insurance coverage under the OCP policy shall extend to the Corporation, its officers, agents, and employees.

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(d) Commercial Automobile Liability.

The policy shall cover owned, non-owned and hired vehicles.

BODILY INJURY & PROPERTY DAMAGE LIABILITY

Each Occurrence

$1,000,000

(e) Umbrella Liability.

Any policy shall provide excess limits over and above the other insurance limits stated in this

Article. The Contractor may purchase insurance for the full limits required or by a combination of primary policies for lesser limits and remaining limits provided by the umbrella policy.

When work is to be performed within railroad right-of-ways, the requirements of Article 107.11 of the Standard Specifications will also apply.

All insurance shall remain in force during the period covering occurrences happening on or after the effective date and remaining in effect during performance of the work and at all times thereafter when the Contractor may be correcting, removing or replacing defective work until notification of the date of final inspection. Termination or refusal to renew shall not be made without 30 days prior written notice to the Department by the insured(s) and the policies shall be endorsed so as to remove any language restricting or limiting liability concerning this obligation.

Certified copies of the original policies or certificate(s) of insurance by the insurer(s) issuing the policies and endorsements setting forth the coverage, limits and endorsements shall be filed with the Department before the Department will execute the contract. A certificate of insurance shall include a statement that, "the coverage and limits conform to the minimums required by Article

107.27 of the Standard Specifications for the Road and Bridge Construction". Any exception or deviation shall be brought to the attention of the Department for a ruling of acceptability. In no event shall any failure of the Department to receive polices or certificates or to demand receipt be construed as a waiver of the Contractor's obligation to obtain and keep in force the required insurance.

All costs for insurance as specified herein will be considered as included in the cost of the contract. The Contractor shall, at its own expense and risk of delay, cease operations if the insurance required is terminated or reduced below the required amounts of coverage. Coverage in the minimum amounts set forth herein shall not be construed to relieve the Contractor from its obligation to indemnify in excess of the coverage in accordance with the contract.

End of Revisions to SECTION 107: INSURANCE

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DIVISION 200 - EARTHWORK, LANDSCAPING, EROSION CONTROL

SECTION 201. CLEARING, TREE REMOVAL AND PROTECTION CARE AND REPAIR OF EXISTING PLANT

MATERIAL (Revise and add the following as indicated)

Article 201.01 Description (add the following)

(f) Trash and Debris Removal -- Trash and debris removal shall consist of the removal and disposal of all trash and debris that is within the area to be graded inside the construction limits to an approved landfill off-site.

Article 201.09 Disposal of Materials - (delete and replace with the following)

This work shall be done in accordance with Article 202.03 of these Special Provisions.

Article 201.10 Method of Measurement - (delete paragraphs (b) through (d) and replace with the following)

All Clearing, Tree Removal, Protection of Existing Plant Material, Care of Existing Plant Material and

Trash and/or Debris Removal that is necessary to perform the grading work within the construction limits shall be classified as SPECIAL CLEARING and will not be measured for payment. Any of these items associated within the designated areas of Special Excavation shall not be considered here but shall be covered under Section 215 - Special Excavation.

Any special areas of trees within the construction limits to be preserved will be specified in the plans and shall not be removed unless approved by the Engineer.

All trees outside the construction limits shall not be disturbed.

Article 201.11 Basis of Payment - (delete all and replace with the following)

All Tree Removal, Protection of Existing Plant Material, Care of Existing Plant Material and

Trash/Debris Removal within the construction limits shall be paid for at the contract lump sum price for SPECIAL CLEARING. No payment for any of the items associated within the limits of Special

Excavation will be made. Payment for those shall be in accordance with Section 215 - SPECIAL

EXCAVATION.

End of Revisions to SECTION 201: CLEARING, TREE REMOVAL AND PROTECTION CARE AND REPAIR OF

EXISTING PLANT MATERIAL

SECTION 202. EARTH AND ROCK EXCAVATION (Delete entire Section and replace with the following)

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SECTION 202. ABANDONED MINE SITE EXCAVATION

Article 202.01 Description

Abandoned mine site excavation shall consist of the excavation, removal, placement, and satisfactory disposal of materials taken from within the construction limits for the reshaping and disposal of mine refuse; the covering of mine refuse with soil; the construction of embankments, ditches, waterways, entrances, field roads and incidental work.

CONSTRUCTION REQUIREMENTS

Article 202.02 Clearing, Tree Removal, Hedge Removal

Prior to starting excavation operations in any area, all clearing, tree removal, hedge removal and trash and debris removal in that area shall be performed according to SECTION 201.

Article 202.03 Removal and Disposal of Surplus, Unstable and Unsuitable Materials and Organic Waste

The Contractor, at his/her own expense, shall dispose of all surplus, unstable and unsuitable materials, including those which result from the work included in SECTIONS 201, 440, and 501 in such a manner that public or private property will not be damaged or endangered.

Whenever possible, stones and boulders naturally occurring within the construction limits shall be placed in fills or embankments in layers and compacted, in accordance with SECTION 205. Broken concrete without protruding metal bars, bricks, rock, stone, or uncontaminated dirt or sand generated from construction or demolition activities may be used in embankment or in fill. These materials shall be placed as approved by the Engineer; shall be compacted to the satisfaction of the

Engineer; shall be buried a minimum of 3 ft (900 mm) below finished grade unless specified otherwise in the plans (except when the materials include only uncontaminated dirt and sand); and shall not create an unsightly appearance or detract from the natural topographic features of an area. Broken concrete without protruding metals bars, bricks, rock, or stone may be used as riprap as approved by the Engineer. If the materials are used for fill in locations within the mine site but outside project construction limits the Contractor must specify to the Engineer, in writing, how the landscape restoration of the fill areas will be accomplished. Placement of fill in such areas shall not commence until the Contractor's landscape restoration plan is approved by the Engineer.

Aside from broken concrete without protruding metal bars, bricks, rock, stone, or uncontaminated dirt or sand used in embankment, for fill, or for riprap, as appropriate, all other construction and demolition debris or waste shall either be disposed of in a licensed landfill, or recycled, reused, or otherwise disposed of as allowed by State or Federal solid waste disposal laws and regulations, and solid waste determinations of the Illinois Environmental Protection Agency (IEPA).

A permit shall be obtained from the IEPA and made available to the Engineer prior to open burning of organic waste (i.e. plant refuse resulting from pruning or removal of trees or shrubs) or other construction or demolition debris available to the Engineer. Organic waste originating within the construction limits may be left on-site for use by the landowner, stockpiled for use as wildlife habitat, P a g e | 11 as determined by the Engineer, in locations designated by the Engineer. When landscape plantings are included in the project, organic waste originating within the construction limits may be chipped or shredded and placed as mulch around landscape planting within the construction limits when approved by the Engineer. Chipped or shredded material to be placed as mulch shall not exceed a depth of 6 in. (150 mm).

When specified, surplus excavated material, including excavated stable and suitable material from special excavation, sewer trenches or other underground construction, shall be used to increase soil cover thickness, construct embankments, flatten slopes, or be disposed of otherwise within the project construction limits as approved by the Engineer. Surplus excavated material shall not be disposed of by the Contractor outside of the construction limits.

All unstable and unsuitable material, including excavated material from special excavation, sewer trenches, or other underground construction shall be excavated or removed and replaced with material acceptable to the Engineer. Unstable and unsuitable material shall not be used in embankments. If unsuitable material is present at or below the finished grade, it shall be removed and replaced with suitable material, in accordance with Articles 205.04 and 205.05. Unsuitable material shall be placed or disposed of by the Contractor at his/her own expense outside of the construction limits as specified herein.

Article 202.04 Grading the Site

The Contractor shall excavate earth materials to the lines, grade, cross-sections and elevations shown on the plans or designated by the Engineer. Mine refuse shall be graded, hauled to, and/or incorporated into the configuration as shown on the plans. Cover material shall be graded, excavated, hauled, and/or placed to the configuration as shown on the plans. Cover material shall be uniformly spread in layers not to exceed nine inches individually to the total depth specified in the plans. All mine refuse, grading, and/or excavation shall be completed prior to applying cover material.

The mine refuse is to be excavated to the lines, grade, cross-sections and elevations shown on the plans or designated by the Engineer. If mine refuse remains below those lines, grade, cross-sections and elevations and was not specified for soil cover on the plans or by the Engineer, then after receiving written approval of the Engineer the Contractor shall excavate the remaining mine refuse to a depth of 2 ft (600 mm) below the adjacent proposed grade or to soil, which ever occurs first.

The area affected by the additional mine refuse excavation shall be backfilled with soil to original plan proposed grade or to the lines, grades, elevations specified by the Engineer. All additional mine refuse excavation and earth excavation necessary due to encountering these conditions will be paid for at the contract unit price for Earth Excavation and Mine Refuse Excavation as described herein.

Article 202.05 Classification

Abandoned mine site excavation shall be classified as earth excavation or mine refuse excavation.

(a) Earth Excavation - Excavation of any earth materials except mine refuse as defined in Articles

101.56 and 101.58.

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(b) Mine Refuse Excavation - All excavation of mine refuse materials as defined by Articles 101.56 and 101.58.

Article 202.06 Construction of Ditches and Waterways

Ditches and waterways shall be constructed and maintained to the lines, grades and cross-sections shown on the plans. Ditches and waterways constructed shall be kept free from debris until acceptance. All suitable materials excavated from inlet, outlet and intercepting ditches, and waterways within the construction limits shall be used for cover soil as far as practicable. Roots, stumps and other objectionable material in the slopes or bottoms of ditches shall be removed and the holes backfilled with suitable material.

Article 202.07 Drainage

The site shall be maintained so that it will be well drained at all times. If, during the prosecution of the work, it is necessary to interrupt existing sewer or under drainage, temporary drainage facilities shall be provided until the permanent drainage work has been completed. Such temporary drainage facilities will be paid for in accordance with the provisions of Article 109.04, unless otherwise provided for in the contract.

The Contractor shall be responsible for and shall take all necessary precautions to preserve and protect all existing tile drains, sewers and other sub-surface drains or parts thereof which may be affected by his operations, and which may be continued in use without change. He shall repair, at his own expense, any and all damage to such drainage facilities resulting from negligence on his part.

Article 202.08 Method of Measurement

(a) Contract Quantities

When the project is constructed essentially to the lines, grades or dimensions shown on the plans and the Contractor and the Engineer have agreed in writing that the plan quantities are accurate, no further measurement will be required and payment will be made for the quantities shown in the contract for the various items involved except that if errors are discovered after work has been started, appropriate adjustments will be made.

When the plans have been altered or when disagreement exists between the Contractor and the Engineer as to the accuracy of the plan quantities, either party shall, before any work is started which would affect the measurement, have the right to request in writing and thereby cause the quantities involved to be measured as hereinafter specified.

(b) Measured Quantities

Earth Excavation and Mine Refuse Excavation will be measured in its original position, and the volume in cubic yards computed by the method of average end areas. The volume of any unstable or unsuitable material removed, and the volume of the replacement material, will both be measured for payment in cubic yards.

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Excavated material used for purposes other than designated in the Specifications, and material excavated beyond slope lines, will not be measured for payment.

Article 202.09 Basis of Payment

Mine site excavation will be paid for at the contract unit prices per cubic yard for EARTH EXCAVATION and MINE REFUSE EXCAVATION, measured as specified herein, which prices shall include payment for other items incidental to the work included under the general heading of Earthwork for which no payment item is included in the contract.

End of Revisions to SECTION 202: ABANDONED MINE SITE RECLAMATION

SECTION 204. BORROW AND FURNISHED EXCAVATION - (revise the following articles as indicated)

Article 204.01 Description (delete and replace with the following)

Borrow excavation and furnished excavation shall consist of excavating; transporting and placing of suitable materials obtained from borrow locations furnished by the Contractor to the areas of the project site shown in the plans. All borrow locations are subject to the environmental review requirements of Article 107.22 and must be approved by the Department prior to disturbance.

Article 204.03 Materials (delete this section)

CONSTRUCTION REQUIREMENTS

Article 204.04 Clearing, Tree Removal, and Protection of Existing Plant Material (add the following sentence)

All clearing, tree removal, and trash and/or debris removal required at the borrow location(s) will be incidental to borrow excavation or furnished excavation and will not be paid for separately.

Article 204.06 Settlement Platforms (delete this section and replace with the following)

Article 204.06 Increased or Decreased Quantities

The right is reserved to increase or decrease the quantities of borrow excavation and furnished excavation required anywhere within the limits of the contract. If additional borrow excavation or furnished excavation is required, it will be paid for at the contract unit price per cubic yard.

Article 204.07 Method of Measurement (delete and replace with the following)

Borrow excavation will be measured in its original position by taking cross-sections before the work is started and again after it has been completed. The volume, in cubic meters (cu yd) of material moved, will be computed by the method of average end areas. Material excavated in excess of that required for the execution of the contract will not be measured for payment.

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Furnished excavation will be measured for payment as follows:

(a) Contract Quantities - The use of contract quantities shall conform to the requirements of Article

202.07 (a).

(b) Measured Quantities - Furnished excavation will be measured for payment in place and the volume in cubic meters (cu yd) will be computed by the method of average end areas and then subtracting the final pay quantity of suitable earth excavation and/or special excavation adjusted by a shrinkage factor of 25 percent or as shown on the plans. Furnished excavation placed in excess of that required for the execution of the contract will not be measured for payment. The volume of suitable furnished excavation will be computed on the basis of using the existing ground line as shown on the plans.

Article 204.08 Basis of Payment (delete and replace with the following)

Borrow and furnished excavation will be paid for at the contact unit prices per cubic meter (cubic yard) for BORROW EXCAVATION and FURNISHED EXCAVATION.

End of Revisions to SECTION 204: BORROW AND FURNISHED EXCAVATION

SECTION 205. EMBANKMENT (delete entire section and replace with the following)

SECTION 205. MINE SITE COMPACTION

Article 205.01 Description

This work shall consist of the compaction of earth fill area(s) or mine refuse disposal area(s) and cover soil by depositing, placing and compacting mine refuse and earth fill areas and all cover soil over mine refuse except the top 12 in. (300 millimeters) of cover soil.

Article 205.02 Equipment

Equipment shall meet the requirements of the following Article of SECTION 1100:

Item Article

(a) Disk Harrow 1101.02

(b) Tamping-Type Roller shall consist of one or more cylindrical sections having studs or feet projecting not less than 6 1/2 in. (162.5 millimeters) from the surface of the drum. The number of tamping feet and the area of feet shall be such that the pressure on a single row of feet approximately parallel to the axis of the drum is not less than 200 psi (1.38 kPa) when supporting the full weight of the roller.

Article 205.03 Preparation of the Subgrade for Earth Cover

Before fill material is placed, all clearing, tree removal and hedge removal over the fill area shall be performed as provided in SECTION 201, and the top 6 in. (150 mm) of the existing ground surface

P a g e | 15 shall be disked and then compacted to the satisfaction of the Engineer. If the fill areas are being constructed during the winter, snow and ice shall be removed from the areas to be covered by fill material. Fill material shall not be placed on frozen earth. When construction is resumed after any winter shutdown period, the top 8 in. (200 mm) of all partially completed fill areas shall be reprocessed and compacted to the minimum specified density prior to placing more fill material in the areas.

When earth fill area(s) are to be constructed on hillsides or slopes, the existing slopes shall be plowed deeply; or if additional precautions for binding the fill materials together are justified, steps shall be cut into the existing slopes before the construction of the fill area is started. If the existing surface is within 6 in. (150 mm) of the elevation of the subgrade or the completed earth surface, it shall be plowed or otherwise broken up to a depth of not less than 6 in. (150 mm).

When the mine refuse disposal area(s) has been graded to the subgrade shown in the plans, MINE

REFUSE TREATMENT - LIMESTONE shall be performed on the subgrade in accordance with SECTION

255. The subgrade shall then be compacted with a roller until the tamping feet of the roller penetrate not more than 2 in. (50 mm) into the subgrade or to the satisfaction of the Engineer.

Article 205.04 Placing Earth Cover Material

Fill material shall be placed in accordance with the following requirements:

(a) General. Fill areas shall be constructed of materials that will compact and develop a stability satisfactory to the Engineer. No sod, frozen material or any materials which, by decay or otherwise, might cause settlement, shall be placed or allowed to remain in the fill areas. Fill areas shall be constructed to the height and width deemed necessary to provide for shrinkage during compaction. Upon completion, they shall conform to the lines, grades and cross sections shown on the plans, with proper provision for shrinkage. When mine refuse disposal areas are constructed of crushed material, broken concrete, stones, or rocks and earth, such materials shall be well distributed and sufficient earth or other fine material shall be incorporated with them when they are deposited to fill the interstices and provide solid embankment. No rock, stones or broken concrete more than 6 in. (150 mm) in largest dimension shall be permitted within a vertical distance of 12 in. (300 mm) below the surface of the subgrade.

Pieces of concrete, not exceeding 2 sq ft for any area of surface, and large rocks and boulders may be placed in fills without being broken up, provided they are well embedded, and interstices filled with smaller pieces or smaller material in a manner to give a density satisfactory to the Engineer. The layers of the smaller pieces or smaller material shall not exceed 12 in. (300

mm) in depth.

So far as practicable, each layer of material shall extend the entire length and width of the mine refuses disposal area. The material shall be leveled by means of bulldozers, blade graders or other equipment approved by the Engineer. Each layer shall be not more than 9 in. (225 mm) thick when in loose condition, shall be uniform in cross section, and shall be thoroughly compacted before the next layer is started.

The use of dragline excavators or similar equipment which excavate and deposit material in large unit masses will not be permitted, unless all materials excavated in this manner are spread

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Article 205.05 Compaction

Each layer of mine refuse or earth fill material shall be disked sufficiently to break down oversized clods, mix the different materials, secure a uniform moisture content, and ensure uniform density and compaction. Disking may be omitted if the fill consists of non-cohesive material.

All lifts of earth fill or mine refuse will be considered compacted when the tamping feet of the roller penetrates not more than 3 in. into a 9-in. lift or one-third of the depth of the layer being placed. If, after making four passes the required compaction is not yet achieved, the Engineer shall take necessary steps to analyze and test the soil conditions. If tests indicate that the material is above

115 percent or below 90 percent of the standard optimum moisture content then the material shall be dried or wetted as necessary to fall within this range. The layer shall then be recompacted until the desirable results are obtained or an additional four passes are made. If the material is determined to be within the specified optimum moisture content range and four passes have been made, no further compaction efforts are necessary.

All lifts of cover soil shall be compacted except the top 12 in. (300 mm). Compaction will not be required on the top 12 in. (300 mm) of cover soil.

The fill areas shall be sprinkled with water when it is necessary to increase the moisture content of the soil to permit the fill areas to be constructed to the densities indicated above.

Compacting equipment and compacting operations shall be coordinated with the rate of placing the earth materials so that the required density is obtained.

Article 205.06 Maintaining and Trimming Embankments

The Contractor shall replace, at his own expenses, any portions of the fill areas which have been damaged or displaced by reason of carelessness or negligence on his part. After the fill areas have been constructed as specified herein, their sides shall be trimmed to the proper slopes where required, and they shall be maintained by the Contractor to the proper elevation and cross-section until they have been accepted.

Article 205.07 Method of Measurement

Mechanical compaction will not be measured for payment.

Article 205.08 Basis of Payment

Compaction and any additive or water applied will not be paid for directly, but shall be considered as incidental to the various items of excavation and the cost of their construction shall be included in the unit prices for these items.

End of Revisions to SECTION 205: EMBANKMENT

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SECTION 250. SEEDING (revise the following articles as indicated)

Article 250.02 Materials (revise Article 1081.04 as indicated)

(a) Sampling and Testing. Each lot of seed, or seed mixture, except Prairie Forbs, furnished shall be tested by a State Department of Agriculture (including other states), or by land grant college or university agricultural sections, or by a Registered Seed Technologist. The seed sample shall be sent directly from the dealer to the place of testing. The cost of this testing shall be included in the unit bid price.

All seeds shall comply with the requirements of the U.S. Department of Agriculture Consumer and Marketing Service, Rules and Regulations under the Federal Seed Act of August 9, 1939, issued March 1940, reprinted with amendments April 1968, or any current revisions.

Acceptance of seeds furnished under this Specification will be based on receipt and approval of a certification covering tests from each lot of seed. Certification shall consist of test reports showing the required test results of lots corresponding to the shipment and signed by the responsible personnel of a State seed laboratory or college or university seed testing section or a Registered Seed Technologist. A Registered Seed Technologist shall verify his/her signature with his/her Society of Commercial Technologists' seal.

The sample must be tested within 30 days of scheduled seeding. Test reports shall provide or include the following information at a minimum:

A ten-percent tolerance will be allowed for each specified pure live seed species in the total seed mixture. If test results indicate insufficient pure live seed of any species, additional pure live seed of the same species shall be added prior to seeding, to correct deficiencies to within the ten percent tolerance allowable.

If test results indicate the presence of an Illinois noxious weed, or the seed mixture is found unacceptable by reason of any other defect that in the judgment of the Engineer cannot be corrected, the Contractor shall obtain a new supply of the specified seed mixture. Any areas seeded with an unacceptable seed mixture shall be destroyed, by preparing a new seed bed and reseeding. No additional compensation will be allowed for correcting deficiencies to within the allowable tolerance, for obtaining a new seed supply if required, or for reseeding.

Seeds may be sampled at destination on a random basis and tested for comparison with certification and compliance with the Specifications. If deviations are found, the results will be reviewed to determine whether the material is acceptable for use. Major deviations may result in a requirement that each lot of material from the source in question be sampled, tested and approved by the Illinois Department of Agriculture before further use.

Article 250.03 Equipment (revise Article 250.03(e), and add Article 250.03(i) and (j))

(e) Broadcast Seeders (change to)

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(e) Spinning Disk Seeders. (revise Article 1101.08(e) to the following)

When spinning disk seeders are used, the individual seeds comprising the seeding mixture need not be sown separately. A spike-toothed or tine-toothed harrow, approved by the Engineer, must either be pulled behind the spinning disk seeder by the same equipment in one operation, or pulled by other equipment over all seeded areas on the same day.

(i) Harrows - Spike Toothed and Tine Toothed. (add as Article 1101.08(i))

Spike and tine toothed harrows shall be commercially manufactured harrows designed for light tillage necessary to cover grass and legume seed after these seeds have been broadcast with spinning disk seeders, truck mounted air flow fertilizer/seeder spreaders, and aerial seeders.

(j) No-Till Seeder. (add as Article 1101.08(j))

These seeders shall be commercially manufactured no-till (zero-till) seeders specifically designed for no-till placement of grass and legume seed and shall be approved by the Engineer prior to use.

Article 250.04 Fertilizer and Agricultural Ground Limestone Application (revise to)

(a) Prior to the application of fertilizer nutrients and agricultural ground limestone on the soil and/or coal refuse, the Contractor shall notify the Engineer so that the Engineer can sample soil and/or coal refuse, retest and, if necessary, revise the rates for fertilizer and limestone specified on the plans to accommodate actual field conditions.

(b) Immediately prior to seed bed preparation and seeding, fertilizer nutrients and agricultural ground limestone shall be uniformly spread at the specified rates over the areas designated.

Specified rates of agricultural ground limestone and fertilizer nutrients are listed on the plans under Summary of Quantities or Schedule of Seeding, Fertilizer Nutrients, Mulch and Mowing.

Fertilizer quantities and application rates may be based on two or more applications. Potassium may be required to be applied in split applications.

(c) When Incorporation - Limestone and Mulch are to be used, as specified in the plans, agricultural ground limestone shall be applied in accordance with SECTION 256. The fertilizer nutrients and seed mixture shall then be uniformly spread at the rates specified over the incorporated areas and tilled into the soil with the seed mixture by use of a spike toothed or tine toothed harrow as directed by the Engineer.

(d) No-till (zero-till) Seeding. No-Till (zero-till) seeding will not require seed bed preparation.

Agricultural ground limestone shall be applied two weeks (14 days) prior to no-till (zero-till) seeding. Fertilizer nutrients shall be applied two weeks (14 days) after no-till (zero-till) seeding according to the Engineer's discretion. The no-till (zero-till) areas may or may not be mowed prior to or after no-till (zero-till) seeding according to the Engineer's discretion. If the Engineer determines mowing is necessary, it will be measured and paid for according to Articles 250.09 and 250.10, respectively. At no time will the seeder be used as a mulch stabilizer in conjunction with seeding or alone.

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(e) Direct Vegetation. If seed bed preparation is required on direct vegetation areas, agricultural ground limestone and fertilizer nutrients shall be applied prior to seeding and according to these specifications. If seed bed preparation is not required or if the Engineer determines it is impractical, the agricultural ground limestone and fertilizer nutrients shall be applied according to the Engineer's discretion.

Article 250.05 Seed Bed Preparation (delete last paragraph and add the following)

Seed bed preparation cannot be performed sooner than 14 days prior to seeding. Seed bed preparation will not be required when no-till seeding or Incorporation - Limestone and Mulch is specified.

Article 250.06 Seeding Methods (delete all but paragraphs 1 and 2 and add the following)

Harrows that meet the requirements of Article 250.03(j) shall be used for light tillage to cover grass and legume seeds, fertilizer and agricultural ground limestone with soil to the satisfaction of the

Engineer on the same day that the seed is sown. A minimum of two passes will be required, one parallel to the slope and one perpendicular to the slope to assure coverage.

Rolling will not be required.

Article 250.07 Seeding Mixtures (change to)

Article 250.07 Seeding Requirements and Guarantee

(a) Seeding Dates and Seed Mixture for Permanent Seeding.

NORTHERN ILLINOIS (North of U.S. Route 136)

Spring seeding dates shall be March 1 to April 20, and fall seeding dates shall be August 1 to

September 1, for the following seed mixes.

Seeding will not be allowed when the wind speed is 10 miles/hour (16 kilometers/hour) or greater.

Seed bed preparation may be allowed by the Engineer prior to seeding dates at his/her discretion.

PURE LIVE SEED

SEED VARIETIES lb./ac. kg./ha.)

Switch Grass - 6 (6.72)

Orchard Grass - 10 (11.21)

Redtop - 2 (1.12)

Smooth Brome Grass - 24 (26.90)

Perennial Rye Grass - 15 (16.81)

Birdsfoot Trefoil - 10 (11.21)

Alfalfa - 10 (11.21)

Cereal Rye - 28 (31.38)

TOTAL 105 (116.56)

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Average purity and germination percentages (viable seed for legumes) are from 1948, Yearbook of

Agricultural, Grass. Any other product from seed tag percentages of germination times purity, and/or viable seed, will cause the Contractor to adjust his/her total pounds/acre (kilograms/hectare) of seed to sow.

(b) Temporary Seeding. This provision is applicable in the event that the Contractor fails to perform permanent seeding within the dates specified. In that event, temporary seeding shall be required to provide a temporary vegetative cover until the next term of permanent seeding dates. Temporary seeding shall be performed by the Contractor at his/her own proper cost and expense, at no additional cost to the Department. Prior to temporary seeding, the Engineer shall submit in writing to the Contractor a proposed temporary seeding mixture, specifying the seed varieties and their respective rates on a pounds/acre (kilograms/hectare) of pure live seed basis. Vegetation resulting from the temporary seeding shall be destroyed as part of the seed bed preparation for permanent seeding during the next term of permanent seeding dates.

(c) Reseeding Guarantee. The Contractor is required to guarantee the results of the permanent seeding for one year after the date of seeding. The Engineer will periodically inspect all seeded areas during that year to determine whether or not vegetation has been successfully established. Upon the Engineer's determination that vegetation has been successfully established, the Contractor shall be released from all further obligations. If the Engineer determines that vegetation on any area is unacceptable, the Contractor shall be required to reseed that area during the next term of permanent seeding dates, at the Contractor's own proper cost and expense, and at no additional cost to the Department.

Unacceptability will be based on:

1. Seed test failure (Article 250.02).

2. Using unacceptable equipment in performing seeding.

3. Failure to perform seeding as specified; i.e., missing areas during seeding, improper seed bed preparation, etc.

4. Failure to perform mulching as specified; i.e., applying too much or too light application in some areas, using unacceptable mulch, etc.

(d) Subsequent Reseeding. Any area reseeded once by the Contractor will be inspected within six months after reseeding to determine if germination has occurred. If subsequent reseedings are required of the same area(s), through no fault of the Contractor, the Contractor shall be compensated for such subsequent reseeding at unit bid prices, or as otherwise agreed upon by the Contractor and the Engineer.

Article 250.08 Selective Mowing Stakes (delete entire article)

Article 250.09 Method of Measurement (revise as indicated)

Delete all references to mowing, and refer to SECTION 258 if mowing is specified on the plans.

In Article 250.09(b), delete “of the class specified”.

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Article 250.10 Basis of Payment (revise as indicated)

Substitute SEEDING for the various classes of seeding and interseeding. The cost of seed testing and any temporary seeding or reseeding will not be paid for separately, but shall be considered incidental to the cost of SEEDING.

Delete all references to mowing, and refer to SECTION 258 if mowing is specified on the plans.

End of Revisions to SECTION 250: SEEDING

SECTION 256. INCORPORATION - LIMESTONE AND MULCH (add this section)

Article 256.01 Description

This work shall consist of furnishing, transporting and incorporating agricultural ground limestone and mulch as specified herein and as noted on the plans.

Article 256.02 Materials

The mulch used for treatment of the soil shall meet the requirements of Article 1081.06(a)(1).

Agricultural ground limestone used for treatment of soil enhancement shall meet the requirements of Article 1081.07.

Article 256.03 Equipment

(a) Agricultural ground limestone or fertilizer spreaders shall be commercial spinning disk…