Piney_Creek_4_Final_specifications.pdf

TENNESSEE DEPARTMENT OF

ENVIRONMENT AND CONSERVATION

DIVISION OF MINERAL AND

GEOLOGIC RESOURCES

LAND RECLAMATION SECTION

SPECIFICATIONS

FOR THE

PINEY CREEK 4

RECLAMATION PROJECT

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SPECIFICATION INDEX FOR THE

PINEY CREEK 4 RECLAMATION PROJECT

Section No. Title Page

100.0 Introduction ……………………………...………. 1

101.0 Delivery Time …………………………………… 1

102.0 Summary of Work ……………………………… 1

103.0 Applicant Violator System ………….…………... 2

105.0 Operator Qualifications ……………………...…... 2

106.0 Increase or Decrease in Quantities …………

107.0 Preparation of Erosion Control Measures ……. 2

108.0 Care of Public and Private Property …………… 2

109.0 Site Access ………………………………………. 3

111.0 Working Hours …………………………………… 3

112.0 Site Clean Up ……………………………………... 3

114.0 Maintenance during Construction ……………… 3

115.0 Unacceptable Material and Workmanship ……. 3

116.0 Final Inspection and Acceptance ……………… 3

117.0 Accidents …………………………………………. 4

118.0 Completion Time ………………………………… 5

119.0 Safety ……………………………………………... 5

120.0 Dust Control ……………………………………… 5

121.0 Superintendence by Contractor ………………... 5

123.0 Tennessee One-Call Center …………………… 6

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Piney Creek 4 Reclamation Project

Section No. Title Page

200.0 Mobilization ……………………………………... 7

201.0 Clearing and Grubbing ………………………… 8

204.0 Area Grading …………………………………… 11

208.0 Ditches, Terraces, and Channels ……………... 15

209.0 Riprap …………………………………………. 17

211.0 Silt Retention Barrier ………………………. ….. 20

214.0 Pond Treatment and Dewatering ……………... 22

302.0 Limestone Subsurface Drain Construction …… 25

701.0 Road Restoration ………………………………. 28

801.0 Vegetation Establishment ……………………... 30

SPECIFICATIONS FOR THE PINEY CREEK 4 RECLAMATION PROJECT

Section 100.0 - Introduction

The following specifications are for reclamation services on the abandoned mine areas at the location shown on the contract drawings.

Definitions:

State: The State, as used in these specifications, shall mean the Tennessee Department of Environment and Conservation, Division of Mineral and Geologic Resources, Land Reclamation Section, and its representatives.

Project Officer: The Project Officer, as used in these specifications, shall mean the employee of the Land Reclamation Section of the Tennessee Division of Mineral and Geologic Resources who is currently assigned to this project.

Division Engineer: The Division Engineer, as used in these specifications, shall mean the Environmental Protection Specialist of the Land Reclamation Section.

Contractor: The Contractor, as referred to in these specifications, shall mean the general earthmoving contractor selected to perform the proposed reclamation that has a proven performance history.

Section 101.0 - Delivery Time

All work specified in this contract is to be completed within approximately 300 days after receipt of order.

This agency term contract will remain active for a period of 24 months from the issue date to allow for determination of final quantities, delivery of weight tickets and certifications, final inspections and acceptance of work and processing of the invoice.

Work is to commence within approximately 30 days after receipt of order.

Once work begins, the Contractor shall use the necessary labor, equipment, and materials to actively pursue the work.

Section 102.0 - Summary of Work

This project is in Van Buren County in Tennessee. It consists of 61.8 acres of abandoned strip mines at eight different areas. The sites are characterized by dangerous highwalls, water-filled pits, and steep spoils. Items of work for this project include clearing and grubbing, area grading, terrace construction, water-filled pit treatment and dewatering, rock-lined channel construction, anoxic limestone drain construction, establishing drainage patterns, road restoration, and vegetation establishment.

Section 103.0 - Applicant Violator System

This project is funded through a grant with the U.S. Department of Interior’s Office of Surface Mining. Therefore, the Contractor must not have outstanding violations with the Office of Surface Mining or be listed for any reason on the OSM Applicant Violator System (AVS).

A construction contract cannot be issued for this project to any contractor who has unfavorable status on the AVS.

The successful bidder is required to submit company ownership and control information to the Land Reclamation office for certification. The Land Reclamation Section will provide the necessary forms for submittal.

Section 105.0 - Operator Qualifications

All equipment operators shall be competent and experienced with the type of equipment for which they are assigned, and they shall also be experienced in working to the lines and grade established on cut and fill stakes in the field.

Section 106.0 - Increase or Decrease in Quantities

All quantities set forth in these specifications and on the bid sheet are estimates. The State reserves the right to increase or decrease the actual quantities as site conditions warrant. The unit price bid shall remain unchanged. Any increase in contract quantities will be made in writing prior to performing any work.

Partial payments will be made based on the amount of work accomplished at the time of the payment request.

Payment request shall be accompanied by supporting measurement and calculation documents. Payment request shall be mutually developed by the Contractor and the Project Officer. Any payment request without the concurrence of these two will not be processed.

Final payment shall be calculated using the total number of units utilized and measured in the project at the unit price bid for each item.

Section 107.0 - Preparation of Erosion Control Measures

Best Management Practices found in Chapter 7 of the Tennessee Erosion and Sediment Control Handbook (August 2012, Fourth Edition) shall be utilized, except as modified herein. Special care shall be taken during all phases of construction to prevent pollution of streams with harmful or polluting materials such as but not limited to fuels, oils, bitumen, and calcium chloride. Payment will be a subsidiary of Section 201, Clearing and Grubbing.

Section 108.0 - Care of Public and Private Property

The Contractor shall take all necessary precautions to prevent damage to all overhead, underground, and above ground structures and to protect and preserve property within or adjacent to the project and shall be responsible for all damage thereto. The Contractor shall exercise special care in the execution of the work to avoid interference or damage to all operating facilities or structures. The Contractor shall be responsible for any damage or injury to public or private property and shall otherwise restore or replace such damage or injury to property as may be deemed necessary by the Engineer.

The Contractor shall cooperate with utilities during any relocation work, adjustment, removal, or reconstruction of any such utility or facility within the work areas.

Section 109.0 - Site Access

The Contractor shall be responsible for maintaining the access roads in a passable condition during the life of the contract. All roads not designated as permanent shall be closed and water barred upon the completion of the project to prevent public access to the affected area. No other access points will be used unless approved by the Engineer.

Passable condition means roadway shall be graded as often as necessary to remove ruts that will trap water or erode. Access roads will be ditched, water barred, graded, have culverts installed, or have whatever other measures are necessary to protect the road from erosion and to maintain a relatively smooth surface.

Section 111.0 - Working Hours

All work on this project, except for dewatering, will be restricted to daylight hours and weekdays unless specifically approved in writing by the Program Manager of the Land Reclamation Section. The Contractor may be required at the Project Officer's discretion to perform the necessary dewatering on a 24-hour basis.

Section 112.0 - Site Clean Up

All work areas and/or areas disturbed during the course of the work shall be thoroughly cleaned of all rubbish, debris, construction waste, or other unsightly materials. Sanitary facilities shall be removed and/or backfilled in a manner acceptable to the Project Officer.

Section 114.0 - Maintenance During Construction

The Contractor shall maintain the work during construction and until the project is accepted. This maintenance shall constitute continuous and effective work prosecuted day by day, with adequate equipment and forces to the end, that ensures the area is kept in a satisfactory condition at all times. No separate payment will be made for this item.

All costs of maintenance work during construction and before the project is accepted shall be a subsidiary to the lump sum bid price for mobilization.

Section 115.0 - Unacceptable Material and Workmanship

All material not conforming to the requirements of the specifications will be considered as unacceptable. All unacceptable materials and workmanship, whether in place or not, will be rejected and shall be removed immediately from the site of the work unless otherwise directed by the Engineer. In case of failure by the Contractor to comply promptly with any order by the Engineer to remove rejected material and workmanship, the Engineer shall have authority to have such rejected work and materials removed by other means and to deduct the expense of such removal from any monies due, or to become due, to the Contractor. Corrective actions to repair unacceptable work and materials will be completed at no cost to the State.

Section 116.0 - Final Inspection and Acceptance

(a) All work (which includes but is not limited to materials, workmanship, and manufacture and fabrication of components) shall be subject to inspection and test by the State at all reasonable times and at all places prior to acceptance. Any such inspections and tests are for the sole benefit of the State and shall not relieve the Contractor of the responsibility of providing quality control measures to assure that the work strictly complies with the contract requirements. No inspection or test by the State shall be construed as constituting or implying acceptance. Inspection or test shall not relieve the Contractor of responsibility for damage to or loss of the material prior to acceptance, nor in any way affect the continuing rights of the State after acceptance of the completed work under the terms of paragraph (f) of this clause, except as hereinabove provided.

(b) The Contractor shall, without charge, replace any material or correct any workmanship found by the State not to conform to the contract requirements. The Contractor shall promptly segregate and remove rejected material from the premises.

(c) If the Contractor does not promptly replace rejected material or correct rejected workmanship, the State (1) may, by contract or otherwise, replace such material or correct such workmanship and charge the cost thereof to the Contractor, or (2) may terminate the Contractor's right to proceed in accordance with the clause of this contract entitled "Cancellation".

(d) The Contractor shall furnish promptly, without additional charge, all facilities, labor, and materials reasonably needed for performing such inspection and test as may be required by the Engineer. All inspection and test by the State shall be performed in such manner as to not unnecessarily delay the work. Special, full size, and performance tests shall be performed as described in this contract.

(e) Should it be considered necessary or advisable by the State at any time before acceptance of the entire work to make an examination of work already completed, by removing or tearing out some, the Contractor shall, on request, promptly furnish all necessary facilities, labor, and materials. If such work is found to be defective or nonconforming in any material respect, due to the fault of the Contractor or his subcontractors, he shall defray all the expenses of such examination and of satisfactory reconstruction.

(f) Unless otherwise provided in this contract, acceptance by the State shall be made as promptly as practicable after completion and inspection of all work required by this contract, or that portion of the work that the Engineer determines can be accepted separately. Acceptance shall be final and conclusive except as regards latent defects, fraud, or such gross mistakes as may amount to fraud, or as regards the State's rights under any warranty or guarantee.

(g) Upon due notice from the Contractor of presumptive completion of the entire project work, the Engineer will make a final inspection. If all construction provided for and contemplated by the contract is found completed to his satisfaction, a final inspection will be scheduled within five (5) days. The final inspection shall be conducted by the Program Manager of the Land Reclamation Section or his designee, the Division Engineer, and the Project Officer. The Contractor shall be present along with his superintendent and all subcontractors, if any, that have worked on the project.

The Contractor shall not remove any equipment from the site until after he receives written notice of final acceptance of the work. Written notice of the final inspection and acceptance will be issued to the Contractor stating final acceptance and the date of release.

If, however, the inspection discloses any work in whole or in part, as being unsatisfactory, the Engineer will give the Contractor the necessary instructions for the correction of the deficiencies and the Contractor shall immediately comply with and execute such instructions. Upon completion of the corrective work, another inspection shall be made which shall constitute the final inspection provided all work has been satisfactorily completed.

Section 117.0 - Accidents

The Contractor shall provide, at the site and at his own expense, such equipment and medical facilities as are necessary to supply first-aid service to anyone who may be injured in connection with the work.

The Contractor must promptly report in writing to the Project Officer all accidents whatsoever arising out of, or in connection with, the performance of the work, whether on or adjacent to the site, which caused death, personal injury, or property damages, giving full details and statements of witnesses. In addition, if death, serious injuries, or serious damages are caused, the accident shall be reported immediately by telephone or messenger to both the Project Officer and the contracting officer.

If any claim is made against the Contractor or any subcontractor on account of any accident, the Contractor shall promptly report the facts in writing to the Project Officer, giving full details of the claim.

Section 118.0 - Completion Time

The completion time is approximately 300 days, which includes no days for bad weather, holidays, or weekends.

The Contractor shall take this time frame for completion into consideration when bidding on this project. An extension shall not be granted unless there are unusual circumstances, such as an act of God. Poor planning, inefficiency, equipment breakdown, or any other factor of which the Contractor has control over shall not be justification for time extensions.

Performance milestones will be enforced on the project. If 25% of the acreage is not completed by Day 75 of the contract, the Contractor will be given a warning. If 50% of the acreage is not completed by Day 150 or 75% of the acreage is not completed by Day 225 of the contract, the contract will be terminated in accordance with Section 7of the contract terms and conditions.

Section 119.0 - Safety

The Contractor shall conduct his operations in such a manner that all applicable laws and regulations are adhered to during performance of this contract.

119.01 - Barricades, Warning Signs, and Other Devices - The Contractor shall provide, erect, and maintain all necessary barricades, suitable and sufficient lights, danger signals, signs, and other traffic control devices, and shall take all necessary precautions for the protection of the work and safety of the public.

119.02 - No direct payment will be made for work required in this section, but the cost thereof will be considered to be included in bid price for mobilization.

Section 120.0 - Dust Control

The Contractor shall take all available precautions to control dust. Dust shall be controlled by sprinkling, by applying calcium chloride, or by other methods as approved. If sprinkling is the selected method for controlling dust, the Contractor shall water as often as necessary to control dust that is produced as a result of the movement of construction equipment and vehicles. The use of other methods shall be effective in preventing dust formation. Oil will not be used.

Section 121.0 - Superintendence by Contractor

The Contractor, at all times during performance and until all the work is completed and accepted, shall give their personal superintendence to the work, or have on the project a competent superintendent, satisfactory to the Program Manager and with authority to act for the Contractor.

Section 123.0 – Tennessee One-Call Center

Tennessee state law requires anyone preparing to engage in either digging, excavation, moving of earth, demolition, or any type of activity that disturbs the earth and therefore possibly involving a danger to damaging underground utility lines, to notify the Tennessee One-Call Center of their intent to dig.

Tennessee One-Call will then notify the member utilities in the area of the proposed work. The utility company locator will then have 72 hours, excluding holidays and weekends, to locate those underground facilities.

While not required by law, in addition to calling Tennessee One-Call, the Contractor is encouraged to contact any non-member utilities in the area of the proposed work.

The locate ticket the Contractor receives is only valid for 15 calendar days from the start date indicated on the ticket, after which time it expires. If the Contractor wishes to continue working, they must call 811 or 1-800-351-1111 at least three working days before the expiration date to renew the locate ticket, at which time a new ticket number will be given.

The Contractor must call the Tennessee One-Call Center at 811 or 1-800-351-1111 at least three days prior to starting work. Tennessee 811 accepts locate requests 24 hours a day, seven days a week.

Section 200.0 - Mobilization

Description

200.01 – The project consists of 8 work areas at 4 sites. Access to the areas will require equipment to be mobilized to 5 different locations.

The work in this Section consists of furnishing all plant, equipment, labor, materials, and supervision necessary for performing all work required under this contract. This includes all operations performed in connection with mobilization of the Contractor’s forces and equipment.

Mobilization shall include the purchase of contract bonds; transportation of personnel, equipment, and operating supplies to the site; establishment of offices, buildings, and other necessary facilities at the site; and other preparatory work at the site. The specification covers mobilization for work required by the contract at the time of award.

Demobilization is also included under this Section. All equipment and waste will be removed from the site before final payment is made under this Section.

A land surveyor licensed in the State of Tennessee shall be required for this project. There are 10 property corners that must be relocated after construction has been completed. Area 3 contains 9 property corners and Area 8 has 1 corner to be re-established. The surveyor will be required to research deeds and past surveys to ensure the property corners and fence lines are placed accurately. Payment for all work necessary to locate and replace all property corners impacted during construction shall be included in the lump sum payment for Mobilization under this Section.

The property lines and corners shown in the drawings are only approximations. They are not to be used for the re-establishment of the property corners.

There is a fence that runs through Area 6 that must be removed during grade work. The fence does not follow a property line. The fence is used to confine livestock. The fence will be relocated to contain the livestock during construction. The fence will be reconstructed to a permanent location after grade work has been completed. The Contractor will coordinate the fence’s final location with the landowner. Included in the lump sum payment for Mobilization under this Section is payment for relocating and reconstructing the fence. This includes the cost of any materials and all labor necessary to reinstall the fence. Estimated length of fence to be reinstalled is up to 600 feet.

Measurement and Payment

200.02 - Measurement will be one (1) job for all work completed under Mobilization.

Payment will be made lump sum and shall be full compensation for furnishing and applying all materials, labor, equipment, and other incidentals necessary to complete the work.

Section 201.0 - Clearing and Grubbing

Special Project Specifications

201.00 – Most of the sites, except Areas 1 and 6, are covered with medium sized pine trees with a few larger trees scattered throughout. Areas 1 and 6 have mostly been cleared of large trees. Clearing and grubbing limits will be flagged by the Project Officer. The Contractor shall confine all work within the flagged area. Care shall be taken to not damage any trees outside the flagged limits.

All clearing debris shall be treated according to the following methods in Section 201.05: Method 1 (Windrowing Construction Slash), Method 4 (Burying), Method 5 (Chipping), and Method 6 (Piling and Burning).

Disposal of onsite vegetation and trees by chipping them into mulch will be the primary method of disposal.

Disposal of clearing debris by any other method will only be done with the approval of the Project Officer.

If any merchantable timber remains in the clearing area of the project limits at the start of construction, the

Contractor will have the option to harvest the timber or dispose of the debris as specified.

All clearing debris twenty-inch (20”) diameter or smaller must be chipped. The chipped debris will be utilized for sediment control and onsite soil stabilization measure where appropriate. The Project Officer will determine where the chipped debris is to be placed. Excess chipped debris will be placed in the bottom of the pits. Remaining stumps will be buried in the bottom of the pits.

Debris larger than twenty-inch (20”) diameter will be disposed of by piling and burning or by burying in the bottom of the pits. The Project Officer will determine the proper method of disposal for the larger debris.

If burning is required, the Contractor shall follow all applicable laws and ordinances. The Contractor shall ensure burning operations proceed under the constant care of competent watchmen, at times and in a manner that will not harm the surrounding vegetation or adjacent property.

After grade work has been completed, the State will survey the sites to determine the acreage of the work completed. Horizontal measurement shall be used in the data collection. Payment will be made to the nearest 0.1 acre for the unit price bid under this section.

Description

201.01 - This work shall consist of clearing, grubbing, trimming, removing, and disposing of timber, construction slash, and debris. This work shall also include preservation of vegetation and objects designated to remain from injury or defacement.

Construction Requirements

201.02 – Clearing and Grubbing: All debris, trees, stumps, roots, and other protruding obstructions within the clearing limits not designated to remain shall be cleared, grubbed, removed, and disposed of, except for the following:

(a) Undisturbed stumps outside the embankment areas, provided they do not extend more than 12 inches above the original ground nor closer than two (2) feet to the finished sub grade or one (1) foot to any slope surface and do not interfere with the placement or compaction of embankments.

(b) Stable trees up to six (6) inches in diameter within the clearing limits but beyond the embankment and uncut vegetation less than three (3) feet in height and less than three (3) inches in diameter.

(c) Grubbing of pits, channel changes, rock sections, and channels below the depth of the proposed excavation.

All roots over three (3) inches in diameter within the embankment area shall be grubbed to a minimum depth of six (6) inches below sub grade. Roots protruding from the excavated slope shall be cut flush with the excavated slope surface.

Trees shall be felled into the area being cleared when ground conditions, tree lean, and shape of clearing permit. Controlled felling shall be used that will ensure the direction of fall when necessary to prevent damage to property, structures, trees designated to remain, or traffic.

Snags and trees outside the clearing limits that are designated for individual removal shall be cut off not more than 12 inches above the ground and treated in accordance with Subsections 201.03 and 201.05.

Limits of work are flagged on the ground by means of paint or colored ribbon. All work shall be confined within the flagged boundary. Any clearing done outside the flagged boundary will not be paid for.

201.03 – Disposal of Merchantable Timber (Timber Meeting Utilization Standards): Timber meeting utilization standards shall be disposed of in accordance with the Special Project Specifications.

201.04 - Pioneer Roads: The construction of pioneer roads shall be approved by the Division Engineer.

201.05 - Slash Treatment: Treatment of construction slash shall be accomplished by one or more of the following methods as shown on the drawings.

(1) Windrowing Construction Slash: Areas used for windrow construction slash shall be cleared to accommodate the windrow. Construction slash shall be placed outside the embankment in neat, compacted windrows laid approximately parallel with the toe-line of embankment slopes. The top of windrows shall not extend higher than ten (10) feet. All material in the windrow shall be matted down with construction equipment to form a compact and uniform pile. Windrows shall have 16-foot minimum length breaks at least every 200 feet. Windrows shall not be placed against trees. A pioneer road may be constructed to provide an area for placement of windrows provided the excavated material is kept within the clearing limits and does not adversely affect the embankment construction.

(2) Windrowing of Large Material: Construction slash ten (10) inches or more in diameter at the small end and six (6) feet or more in length shall be windrowed as in subsection (1) above. Small material shall be treated by one or more of the other included options for slash treatment.

(3) Windrowing and Covering: Construction slash shall be placed and compacted as in subsection (1) above and shall be covered with at least six (6) inches of rock and soil to form a smooth and uniform windrow.

(4) Burying: Construction slash shall be buried at the locations shown on the drawings and designated on the ground. Construction slash shall be matted down in layers and covered with at least two (2) feet of rock and soil. The final surface shall be smooth and sloped to drain.

(5) Chipping: Construction slash up to at least four (4) inches in diameter shall be processed through a chipping machine. Chips shall be deposited on embankment slopes to a loose depth not exceeding six

(6) inches. Minor amounts of chips may be permitted within the embankment if they are thoroughly mixed with soil and do not form a layer.

(6) Piling and Burning: Construction slash shall be burned in areas shown on the drawings and designated on the ground. Piles shall be constructed so that burning does not damage standing trees. If burning is incomplete, the slash remaining shall be piled and burned until the pieces are reduced to less than three (3) inches in diameter and three (3) feet in length. These pieces shall then be scattered.

The Contractor shall conduct burning operations in compliance with all local, state, and federal laws, ordinances, and regulations. It is the Contractor's responsibility to obtain all licenses, permits, payment of fees, etc., to comply.

(7) Decking Unmerchantable Material: Logs not meeting utilization standards that are six (6) inches or more in diameter shall be bucked into lengths not to exceed 32 feet and piled at the locations shown on the drawings.

Pieces of wood that are less than three (3) inches in diameter and three (3) feet in length may be scattered within the clearing limits.

All Methods: No material shall be deposited in lakes, meadows, streams, or streambeds. Construction slash that interferes with drainage structures shall be removed immediately.

Trees adjacent to the clearing limits scorched or damaged beyond recovery shall be felled and disposed of in accordance with Subsection 201.03 or treated as construction slash.

Measurement and Payment

201.06 - The method of measurement will be to the nearest 0.1 acre for all work completed and accepted. Horizontal measurement shall be used in the data collection.

Payment will be paid at the contract unit price bid per acre and shall be full compensation for furnishing and applying all materials, labor, equipment, and other incidentals necessary to complete the work.

Section 204.0 - Area Grading

204.00 - The work in this section consists of the grading of spoil to eliminate pits and highwalls, constructing surface channels, and construction of under drains.

Area 1 consists of a ridge that has been mined around leaving piled spoil and three water-filled pits. The area is

21.3 acres. The area has highwalls ranging from 30 to 50 feet in height. Most of the highwalls will be backfilled to a 3:1 slope, but a few sections will be flatter. The section adjacent to Piney Creek will have a grass-lined waterway to divert runoff from flowing directly into Piney Creek. Extra care will be taken not to impact the stream during grading operations.

The pH of pit #1 was slightly out-of-compliance when field checked by department staff. The water must be checked and treated prior to discharging the water. The other water-filled pits will be absorbed during backfilling operations, unless conditions have changed since the water pits were field checked.

Area 1 connects to the completed Piney Creek 3 reclamation project. The highwall where the previous project ends has only been partially backfilled where construction stopped. There is an ALD outlet at the project end point. The under drain will be extended and the remaining highwall will be backfilled. See sheets 4 and 5 of the drawings for details of backfilled slopes. The approximate cut/fill yardage for the area is 182,000/185,200 cubic yards.

Area 2 consists of a 3.9-acre strip mine. The area has highwalls averaging 40 feet in height. The final grade of the backfilled highwalls will have 3:1 or flatter slopes. The site has two water-filled pits. Water pit #5 can be absorbed during backfilling operations. Water pit #4 had a low pH when field checked by department staff and it was out-of-compliance with water quality standards. The water quality must be checked, and the water treated, if necessary, before being discharged during backfilling operations. A terrace will be constructed to breakup the drainage after grade work has been completed. The area is adjacent to Piney Creek. Extra care will be taken not to impact the stream during grading operations. The approximate cut/fill yardage for the site is 35,100/37,300 cubic yards. Cross sectional drawings for the area are shown on sheet 6 of the drawings.

There is a small area of the previously completed Piney Creek 3 Reclamation project that has washed and eroded. The area is around 1.5 acres. The area is located along the access road to Areas 1 and 2 near Walling Road. The area will require light grade work to eliminate reels and revegetation. Clearing and grubbing will not be required.

Areas 3 and 4 consists of small strip mines. The areas are 4.5 and 0.8 acres respectfully. The highwalls are 20 feet tall or less. The highwalls will be backfilled to their approximate original contours. They will have a uniform slope from the top of the highwall to the toe of the spoil. There is one water-filled pit on Area 4 that can be absorbed during backfilling. The approximate cut/fill yardage for both areas is 29,500/28,200 cubic yards total. Cross sectional drawings for the area are shown on sheet 9 of the drawings.

Area 5 is a 3.0-acre site adjacent to Archie Rhinehart Parkway. The site has highwalls 20 feet tall. The highwalls will be backfilled to slope from the top of the highwall to the toe of the spoil. The final backfilled slope will be flatter than a 10:1 slope. The site has one water-filled pit that must be drained prior to backfilling operations. The water was in-compliance when field checked but must be rechecked before discharging. The approximate cut/fill yardage is 17,300/15,200 cubic yards total. Cross sectional drawings for the area are shown on sheet 10 of the drawings.

Areas 6 and 7 total 13.4 acres. The site consists of two small ridges that have been mined around and a small 0.4 acre cut from a possible underground mine. There is only one small section of short highwall on the site. The areas will be regraded to their approximate original contours. The site has three small water-filled pits that should be able to be absorbed backfilling operations, depending on conditions at the time. The work limits at Area 7 will stop at the property markers at the southwest edge of water pit #10. The approximate cut/fill yardage for the areas is 65,400/65,400 cubic yards total. Cross sectional drawings for the areas are shown on sheet 13 of the drawings.

Area 8 is a 14.9-acre site consisting of spoil piles and no highwall. The area will be shaped to eliminate water pits and depressions that hold water. There are two water-filled pits that will be discharged before backfilling the pits. One of the water pits will require treatment before discharging the water. There are two monitoring wells located in a depression within the site. The monitoring wells will not be disturbed. The approximate cut/fill yardage is 43,800/41,800 cubic yards total. Cross sectional drawings for the area are shown on sheet 16 of the drawings.

Before backfilling operations can begin, all water in pits shall be tested to ensure they meet water quality standards. All water-filled pits that cannot be absorbed shall be pumped or drained down prior to backfilling to not create mud or sludge. See Section 214.0, Pond Treatment and Dewatering for details on individual pits.

Method 1 of Section 204.03, Side Casting, will be used for placing of fill in pits and backfilling highwalls. The backfilling and grading of the pits and depressions where water is still pooled after pumping and draining shall be in a slow, consistent operation that allows for the soil to absorb the remaining water. Backfilling must cease when the ground within the water-filled pits becomes unstable to the point the backfill will not support the weight of a dozer.

The material at the base of the highwall must be walked-in every ten (10) vertical feet to reduce settling of backfill material. Compaction by rolling with the earthmoving equipment used for grading operations will be acceptable.

All slopes will be tracked in perpendicular to the slope when grading is complete or when active grading operations of the slope will cease for more than 72 hours or before an anticipated rain event.

Grade work will provide positive grade for drainage on all graded areas and will eliminate all depressions that can hold water. After all rough grading is complete, surface drainage shall be provided by construction of rip-rap channels, grass-lined waterways, and terraces. The Project Officer will determine where drainage channels are required, both those specified and any additional channels that may be required. Where the grade on grassed waterways exceeds two (2) percent, rip-rap channels lined with filter fabric and riprap will be constructed. Typical sections for terraces, grassed waterways, and rock-lined channels are shown on sheet 17 of the drawings.

Terraces may be needed to break up sheet flow runoff over the backfilled slopes. The Project Officer will determine and mark the locations for the terraces that are constructed. The grade of the terraces shall not exceed two (2) percent. The grade of the terraces shall be checked with a level, transit, or other comparable method.

After grade work has been completed, the State will survey the sites to determine the area of the work completed.

Horizontal measurement shall be used in the data collection. Payment will be made to the nearest 0.1 acre for the unit price bid under this section.

Terrace construction, grass-lined waterway construction, rock-lined channel construction, and anoxic limestone drain construction are included in the unit price bid under Section 204.0, Area Grading. Materials required in the construction of the channels will be paid under Section 209.0, Rip-rap.

204.01 - The work in this section consists of the excavation, filling, and grading of all materials of whatever nature. It includes all hauling, formation of fills and embankments, ditch excavation, berm construction, disposal of unsuitable or surplus material, and finishing and final dressing.

Materials

204.02 - The materials required for this work shall be the in-situ materials on site unless stated otherwise in this contract special provisions.

Construction

204.03 - Construction of Fills: Final grade shall approximate the lines and grade configuration shown on the plans.

Regardless of the method of fill placement, the fill shall be so constructed that positive surface drainage shall be provided at all times. Ponding of water will not be allowed on the surface of the fill. Fill material may be placed in one of several different methods. These options are listed, and any required option or options shall be shown on the drawings.

Method of placing fill:

(1) Side Casting: This method allows the dumping or pushing of material over the side of previously placed material. The material pushed or dumped must not exceed four (4) feet in thickness on the face of previously placed material. This method may be used in areas where finished grade is not critical to establishing final drainage patterns and in areas where settlement is not considered a problem. Small amounts of herbaceous and vegetative material (trees and brush) will be permitted in the base of the fill, provided it is not bunched up to form a loose pile of brush that will rot and leave a void that results in subsidence. When trees and brush are placed in the fill, the trees and brush shall be placed on the bottom of the pit and compacted to form a dense mass not to exceed four (4) feet in thickness. This method of brush disposal will only be allowed where future subsidence will not cause pits to be formed, and disposal areas will be shown on the drawings. Scattered individual trees may be allowed in the fill provided they are on the bottom of the pit area and fill material surrounds the trees. Compaction is not required. This method is particularly applicable for pushing off spoil ridges into open pits to form a uniform finished grade that approximates original contour or contour shown on the drawings.

Pits that are holding water and designated to be backfilled shall be dewatered before backfilling.

See Section 214.0, Pond Treatment and Dewatering.

In some instances, pits with shallow water may be backfilled with the pushing of earth material into the pit from the end and absorbing the water with the soil material. In the event absorption is allowed, the Contractor shall push backfill material slowly to allow the soil particles to absorb the water and remain stable to the point of supporting the equipment used to move the backfill material.

Any mud or very soft backfill shall be covered with dry material to a depth that will support a dozer. If the mud cannot be made stable, then the Contractor shall provide a guard to make sure no one enters onto the area until the area has been stabilized.

If absorption of the water is permitted, then specifications will be included in Section 204.00, Special Project Specifications. Otherwise, absorption will not be permitted.

(2) Layer Placement of Fill: Fill material shall be placed in layers not to exceed one (1) foot in thickness and compacted by rolling with the earthmoving equipment used for transporting or hauling the fill material.

(a) Movement of materials will not be permitted when material is frozen or completely saturated.

Material must be in a condition that allows placement without bogging equipment down.

(b) Placement of fill or embankment will not be permitted in areas of bogs or swampy areas until those areas are drained and the sub grade of the fill prepared to receive fill materials.

(c) Preparation of surfaces to receive embankment shall be prepared by clearing all vegetative and organic materials from the site where fill materials are to be placed.

(d) When rock is used as a foundation, the foundation shall be stripped and cleaned of all overlying materials. All loose, disintegrated, or light slab portions of the rock shall be removed. In rock foundations where the rock is shattered below the foundation elevation, the shattered material shall be removed, and the space so created by removal of material shall be rebuilt with the same type of construction as the proposed overlying construction.

When the excavated material consists predominantly of rock fragments of such size that the material cannot be placed in layers of the normal 8–12-inch thickness without crushing, pulverizing, or further breaking down the pieces resulting from excavation methods, such material may be placed in the embankment in layers not exceeding four (4) feet in depth. All rock to be placed in the embankment shall be broken into sizes not exceeding three (3) feet in maximum dimension. Larger pieces may be placed on the embankment face when permitted by the Engineer. Each layer shall be leveled and smoothed with suitable leveling equipment and by the distribution of finer fragments of rock or other satisfactory material.

204.03.1 - Channels, Berms, and Dikes:

(a) Diversion channels, berms, check dams, and other minor erosion control measures shall be a part of this work and shall be constructed in accordance with the details shown on the drawings.

(b) Ditch and Berm Construction: The construction of diversion channels and berms that are necessary for the control of drainage on the sites shall be constructed to the template cross-section shown on the drawings. All channels or berms not designated as permanent structures shall be removed prior to final acceptance.

Minimum side slopes for channels and berms shall be two (2) feet horizontal to one (1) foot vertical or flatter. Maximum grade of the ditch bottom shall not exceed two (2) percent unless otherwise designated or directed by the Engineer.

The channels shall be seeded and mulched immediately after construction of the ditch or berm is complete. Channels or berms shall be maintained throughout the life of the contract to function as constructed.

204.03.2 - Drainage Excavation:

Drainage excavation shall include construction of terraces, minor channel changes, channels, water bars, diversion channels, and other minor earth drainage structures as shown on the drawings.

204.04 - Temporary Dozer Access Road: The temporary dozer access road shall be built on the flagged grade.

Maximum grade shall not exceed 12 percent unless approved in writing by the Engineer. The road will have a maximum disturbance width of 20 feet. Upon abandonment, the road will be water barred directing water to the outside and revegetated. Water bar locations will be flagged on the ground by the Engineer.

Measurement and Payment

204.05 – The method of measurement will be to the nearest 0.1 acre for all work completed and accepted. Horizontal measurement shall be used in the data collection.

Payment will be paid at the contract unit price bid per acre and shall be full compensation for furnishing and applying all materials, labor, equipment, and other incidentals necessary to complete the work.

Section 208.0 - Ditches, Terraces, and Channels

208.00 – Rock-lined channels, grass-lined channels, and terraces shall be constructed to carry surface drainage after grade work has been completed. The State will be present and help locate the channels and any terraces. General locations for anticipated channels are shown on the final views of the drawings. Design details for the channels are shown on sheet 17 of the drawings.

There are three rock-lined channels required on the project. The rock-lined channels will be 10 feet wide and three (3) feet deep. The channels will be lined with five (5) ounce non-woven filter fabric prior to placing the rip-rap. The rip-rap will be clean 6”-12” stone with larger stone over 12” (Class B) mixed in to anchor the rock in place on the steeper slopes. Smaller stone will be rejected. The rock-lined channels total 570 feet in length.

Two grass-lined channels will be constructed on this project. The channels will be 16’ wide and 2’ deep. The grass-lined channel is 950 feet in length. The grass-lined channel will have a two-percent over flatter slope. The contractor will check the grade will a level to ensure compliance.

Area 2 will have a terrace constructed to break-up the runoff on the sites. The slope of the terrace will not be greater than two-percent. The contractor will check the grade will a level to ensure compliance. The terrace will be approximately 650 feet in length.

Soil removed from the excavation of the channels shall be deposited where it will not interfere with surface runoff into the watercourse.

The Project Officer may determine that additional drainage control channels (terraces, grassed waterways, rock-lined channels) are needed after grade work has been completed. If terraces and grassed waterways are constructed, they shall have an outfall grade of no more than two (2) percent. In no case shall the grade exceed two (2) percent unless the bottom is on bedrock. Rock checks may be constructed to slow the flow of surface water as needed.

Payment for constructing all terraces, rock-lined channels, rock checks, and grass-lined waterways (those specified in the plans and any additional ones) shall be included in the unit price bid under Section 204.0, Area Grading.

Rip-rap and filter fabric used in constructing the channels shall be paid for under Section 209.0, Rip-rap.

208.01 - This work shall consist of the layout and construction of diversion channels, terraces, and channels necessary to prevent or minimize erosion and control water flow and direction on the project site.

Equipment

208.02 – The equipment size and quantity shall be suited for the size drainage structure shown on the drawings and it shall be available to perform the work. Large equipment shall not be permitted when cutting small diversion channels if an excessive area of disturbance is the result of the use of large equipment.

Construction Requirements

208.03 - All diversion channels, terraces, and waterway channels shall be constructed to the grades and dimensions shown on the drawings, but in no case shall the bottom grade of any ditch be greater than three (3) percent unless approved in writing by the Division Engineer.

Measurement and Payment

208.04 - Separate payment will not be made for construction of rock-lined channels, grassed-lined waterways, or terraces, but will be a subsidiary item of work under Section 204.0, Area Grading.

Payment for filter fabric and rip-rap used in construction of rock-lined channels will be made under Section 209.0, Rip-Rap.

Section 209.0 - Rip-Rap

209.00 – Three rock-lined channels shall be constructed at the locations shown on final views of the drawings. The rock-lined channels shall require 570 tons of limestone. The limestone will be a combination of 6”-12” limestone and larger Class-B limestone. Larger Class B limestone will be mixed in to deter the limestone from washing down slope during rain events.

There are four anoxic limestone channels specified in Section 302.0, Limestone Subsurface Drain Construction.

The ALD’s will require 1,470 tons of 4”-9” rip-rap or #2 limestone. The rip-rap will be certified high calcium limestone, at least 90% calcium carbonate.

The approximate lengths and rock requirements of rock channels and ALD’s are as follows:

site length quantity

Rock-lined Channel #1 Area 1 360’ 360 tons Rock-lined Channel #2 Area 3 160’ 160 tons Rock-lined Channel #3 Area 3 50’ 50 tons

Anoxic Limestone Drain #1 Area 1 380’ 240 tons Anoxic Limestone Drain #2 Area 1 890’ 550 tons Anoxic Limestone Drain #3 Area 3 590’ 370 tons Anoxic Limestone Drain #4 Area 8 490’ 310 tons

Total 2,040 tons

A total of 2,040 tons of rip-rap will be required for the project. Five (5) ounce, non-woven filter fabric shall be placed under the rip-rap channels and rock checks, and it shall be placed on all sides of the subsurface drains. A total of 5,000 yd² of filter fabric shall be required.

Rock checks shall be placed in any grass-lined waterways or terraces as determined by the Project Officer.

Additional rip-rap channels and subsurface drains may be required. See sheet 17 of the drawing for a typical section for rock checks.

Payment for stone and filter fabric shall be paid under this Section. Payment for constructing the rock-lined channels, rock checks, and anoxic limestone drains shall be included in the price bid per acre under Section 204.0 (a), Area Grading.

Description

209.01 - This work shall consist of furnishing and placing hard durable limestone rock on the slopes of embankments, dikes, stream banks, on bottom and sides of channels and ditches, gullies, culvert outlets, wing walls, structure outlets and at other locations shown on the drawings.

Materials

209.02 - Stones used…