Mines Road Portal_ SPECS - signed.pdf

GENERAL AND TECHNICAL SPECIFICATIONS

FOR

6196 MINES ROAD

PORTAL PROJECT

PULASKI COUNTY, VIRGINIA

PREPARED BY:

COMMONWEALTH OF VIRGINIA

DEPARTMENT OF ENERGY

MINED LAND REPURPOSING

ABANDONED MINE LAND SECTION

September 9, 2026

Table of Contents

GENERAL SPECIFICATIONS

TECHNICAL SPECIFICATIONS

1. MOBILIZATION

2. PROJECT SIGN

3. ACCESS ROAD UPGRADE

4. CLEARING & GRUBBING

5. AGGREGATE

6. SILT FENCE

7. CULVERT

8. CHAIN-LINK SAFETY PERIMETER FENCE

9. VERTICAL OPENING ENCLOSURE: WELDED WIRE PANEL GRID

10. MINE PORTAL CLOSURE: GABION BACKFILL W/ BAT GATE

11. GRASS-LINED DITCH

12. REVEGETATION

13. CLEAN UP AND REPAIR OF DAMAGE

14. QUALITY CONTROL

15. SAFETY PRECAUTIONS

16. FUGITIVE DUST CONTROL

APPENDIX A

MINES ROAD PORTAL PROJECT

Section 1.

All of the following parts considered as a whole shall comprise the complete specifications. They are complementary and anything called for by one and not the others shall be considered binding as though called for by all.

1.1 Bid Package (General Clauses, General Conditions, Notice and Instructions to Bidders, etc.).

1.2 General Specifications (Pages 3 - 6) and Construction Specifications (Pages 7 27)

1.3 Construction Drawings (Sheets 1 - 5)

Section 2. DEFINITIONS

2.1 partment of Energy, Mined Land Repurposing.

2.2 accepted by the Contractor together with this specification and all other documents referred to in such purchase order; or to a formal contract executed by the Agency and the Contractor, together with this specification and other documents referred to in such formal contract.

2.3 , or corporation named as such in the contract and includes the plural number and the feminine gender when such are named in the contract as the Contractor.

2.4 material worked to a special design but does not include one who merely furnishes material not so worked.

2.5 any and all labor, supervision, services, materials, machinery, equipment, tools, supplies and facilities called for by, and to complete, the Contract.

2.6 Project a representative of the Agency and includes one who inspects the work and assesses compliance with the plans and specifications.

Section 3. SCOPE OF WORK

3.1 The work to be performed under the terms of this Specification consists of the reclamation of a one small abandoned mine portal (P) and one vertical opening (VO) on the MINES ROAD PORTALS PROJECT located near 6196 Mines Road, Pulaski, Pulaski County, Virginia, for the Commonwealth of Virginia.

3.2 The intent of this Specification is to prescribe the complete work to be performed. The specification is written to permit and direct the work to be conducted by the selected Contractor. If there are any contradictions between the Specifications and Drawings, meaning and intention.

3.2.1 The Contractor remains responsible for timely identifying any conflicts as may be found to the attention of the Agency.

3.2.2 In the absence of a formal written response from the Agency, or in the event the Contractor fails to bring such facts to the attention of the Agency, the Contractor is responsible for ensuring compliance with the most stringent requirement.

A. The Contract Documents are complementary, and the Contractor shall promptly review the Drawings, Specifications, and other Contract Documents upon receipt and prior to commencing the Work.

B. If the Contractor discovers any discrepancy, conflict, ambiguity, omission, or error in the Contract Documents, or identifies any condition that appears inconsistent with the intent of the Contract Documents, the Contractor shall immediately notify the Agency in writing and request clarification before proceeding with the affected Work.

C. The Contractor shall not proceed with the affected Work until written direction has been issued by the Agency. The Agency shall determine the appropriate interpretation or resolution of the discrepancy, conflict, ambiguity, omission, or error. The Contractor shall perform the Work in accordance with the Agency's written direction.

D. The Contractor shall be responsible for any costs associated with performing Work without first notifying the Agency of a known discrepancy, conflict, ambiguity, omission, or error in the Contract Documents.

Such Work may be subject to removal and replacement at no additional cost to the Commonwealth

E. No information or instructions in this Section shall be construed to authorize the Contractor to independently interpret, modify, or resolve conflicts in the Contract Documents, or to proceed with Work, based upon the Contractor's own interpretation where clarification from the Agency is required.

Section 4. TIME SCHEDULE

4.1 The Work shall be executed with sufficient personnel, equipment and material to complete the work in a period of 16 calendar days.

Section 5. WORK BY CONTRACTOR

The Contractor shall:

5.1 Furnish all supervision, labor, materials, tools and equipment necessary to perform all work. The work shall consist principally of the following:

5.1.1 Install and maintain erosion and sediment control throughout the project.

5.1.2 Install a Project Sign displayed publicly near the main road;

5.1.3 Upgrade the existing access road with surface treatment;

5.1.4 Install proposed temporary -diameter HDPE culvert pipe;

5.1.5 Install lower mine portal closure with bat gate and wet seal drain;

5.1.6 Install proposed closure of the upper vertical opening via GWW bull fence panels;

5.1.7 Install perimeter chain-link safety fence around vertical opening;

5.1.8 Relocate the temporary -diameter HDPE culvert to under the access road permanently;

5.1.9 Install a grass-lined ditch utilizing erosion-control mat from the portal area to the access road;

5.1.10 Install erosion control measures for inlet and outlet of permanent culvert;

5.1.11 Cleanup and repair any property damaged by proposed work.

5.1.12 Revegetate all disturbed areas. Remove any temporary measures.

5.2 Be responsible for receiving, unloading, storing, protecting and handling all materials and equipment furnished by the Contractor or the Agency for the execution of all work under this Specification.

5.3 Be responsible for demurrage or claims incurred because of negligence in expediting the unloading of materials or equipment.

5.4 Replace any defective material furnished by the Contractor or any defective work performed by the Contractor s forces at the

Contractor own expense.

5.5 Furnish to the Agency for approval before start of work, a Schedule of Work and procedure for construction of the work covered by the contract.

5.6 Be responsible for scheduling, expediting, directing, inspecting and coordinating the work so as to complete the work in the time agreed upon. The Contractor shall immediately notify the Agency of any impending problems, which could delay the completion of the work.

5.7 Before starting the work, contact the Agency for proper clearance and be governed by the Agency s instructions.

5.8 Be responsible for locating, relocating and protecting from damage existing underground and overhead utilities when such utilities are clearly visible. Be responsible for verifying the location of all utilities, pipes, etc. before initiating the work.

5.9 Confine all workers to the construction area.

5.10 Provide drinking water and containers.

5.11 Provide watchmen, safety barricades, lights, signs and other items necessary for layout and installation of the work.

5.12 Furnish all labor, stakes, templates and tools and perform all field surveying and engineering to establish construction quantities and the lines and grades necessary for layout and installation of the work.

5.13 Be completely familiar with the location and accessibility of various construction and storage sites to determine the best material and equipment handling methods for the orderly completion of the work.

5.14 Have on the work site during construction a competent superintendent, duly authorized to represent and act for the Contractor in all matters pertaining to the work covered by this Specification.

5.15 Not perform any additional or temporary work for the Agency s account unless on specified written orders, signed by the authorized representative and Contractor and only in the amounts of the various types of work specified in said orders.

5.16 Work in close cooperation with the Agency and others engaged in the project so that the work will be completed with dispatch and in an orderly manner.

5.17 Continuously maintain adequate weather and fire protection of the Contractor s work from damage and shall protect property from damage or loss arising in connection with this contract. The Contractor shall make good any such damage or loss.

5.18 -and the Safety Codes Commission of the Commonwealth of Virginia, issued by the Department of Labor and Industry under Title 40.1 of the Code of Virginia (1950), as amended. The Contractor shall be held liable to the Agency for any health and/or safety infractions, on the Contractor s part, which cause the Agency or surface owner to receive a citation and/or fine from any local, state or federal agency. Actual costs involved will require satisfaction, by the Contractor, to the Agency or surface owner.

5.19 Maintain the site of work in an orderly manner. The Contractor shall provide personnel and supervision to continuously clean up the construction area under this jurisdiction. Should the Contractor refuse or fail to clean up or remove debris when requested by the Agency, it is understood that the Agency may employ others to do this work, and without further authority withhold the cost thereof from any payment due the Contractor.

5.20 Dispose of all debris and waste resulting from work at a disposal site approved by the Agency. The Contractor shall comply with all Department of Environmental Quality requirements concerning the use, handling, and disposal of petroleum products, working in or near streams and wetlands, burning or releasing emissions into the air, and disposal of solid waste and hazardous or toxic waste. The Contractor shall not put or spill any materials into any drainage system that would pollute area streams or waterways. The Contractor shall be liable for any pollution caused directly or indirectly by the Contractor s employees or those of any subcontractors.

5.21 Furnish all special apparatus, welding machines, air compressors, hoisting equipment, tools, implements, cartage, scaffolding, ladders, planks, acetylene gas, oxygen gas, expendable materials, temporary light and heat, construction materials, shims, and all other materials that may be required for the proper completion of the work.

5.22 Furnish electrical power, gas, compressed air, and any other utilities required for use during construction. The Contractor shall remove all temporary wiring, switches, lights, piping, and connections to service facilities used during construction.

Such connections shall not be made without approval of the Agency.

5.23 Not be permitted to drive any crawler type equipment or rollers on any paved roads except on rubber tire floats or similar vehicles. The Contractor shall protect pavement when it is necessary to move such type of heavy equipment across any paved roadway.

5.24 Not be permitted to keep within buildings or structures any stock of gasoline, kerosene, diesel fuel or similar flammable material. Any such flammables shall be stored in areas arranged by the Contractor, in a manner approved by the Agency and in complianc

5.25 Be responsible for shoring as required to prevent damage to any adjacent structures, utilities or property.

5.26 Repair to the satisfaction of the Agency, at the Contractor s own expense, any damage to adjacent structures, utilities or property.

5.27 Allow and provide the Agency access to the work for inspection whenever it is in preparation or progress, and provide proper facilities for such access and inspection.

5.28 The drawings and specifications illustrate the general character and scope of the work. Any additional detail and other information deemed necessary by the Agency will be furnished to the Contractor when and as required by the work.

5.29 and all details shall be worked out in relation to their location and their connection with other parts of the work.

5.30 The specifications are divided into several parts for convenience only, since the entire specifications must be considered as a whole. The divisions of the specifications are not intended to control the Contractor in dividing the work among subcontractors or to limit the work performed by any trade. The Contractor shall be responsible for the coordination of the trades, subcontractors, and venders engaged upon this work.

5.31 The Contractor shall verify measurements or dimensions shown on the drawings at the site. Where there are discrepancies, the Agency shall be consulted.

5.32 The Contractor shall maintain at the site one copy of all drawings, specifications, addenda, change orders and other modifications, in good order and marked to record all changes made during construction.

5.33 Before performing any excavation, contact Virginia 811 via the website or by phoning 1-800-522-7001, to confirm the location of any below ground utility lines in the work area. The affected utility companies will mark the location of the underground lines within 48 hours after being notified. If the work is to continue for more than 15 days, they will return to remark the utility lines as requested. Further details about the Virginia 811 program and its requirements are available at the website https://va811.com.

5.34 The Contractor shall comply with all regulations governing storm water discharges from construction activities. The contractor shall implement an erosion and sediment control plan throughout the duration of construction activities.

5.35 The Contractor shall certify that all materials meet the requirements of these specifications and governing authorities.

5.36 The Contractor shall comply with permits issued by the Army Corps of Engineers and any other permits required to complete construction for this project.

5.37 Per the Davis- Worker Rights

Please see Appendix A of this package or https://www.dol.gov/sites/dolgov/files/WHD/legacy/files/fedprojc.pdf

Section 6. WORK BY AGENCY

The Agency will:

6.1

6.2 Provide limited area, not necessarily adjacent to the site, for storage purposes and for the Contractor s offices, change houses, sanitary stations, and tool and storage sheds. The Contractor shall make and maintain access to the facilities.

6.3 Furnish all design and detail drawings necessary to complete the specified work. One set of Plans and Specifications will be sold to interested bidders. Additional sets of Plans and Specifications will be issued to the selected Contractor as needed.

https://va811.com https://www.dol.gov/sites/dolgov/files/WHD/legacy/files/fedprojc.pdf

6.4 Designate in the field, the manner in which the work is to be performed, as conditions warrant, if not detailed in the Specifications or shown on the Drawings.

6.5 Inspect the work during its progress. No work will be considered completed until approved by the Agency.

6.6 Obtain right of entry.

MINES ROAD PORTAL PROJECT

1. MOBILIZATION

1.A SCOPE

This item shall consist of the mobilization and de forces and equipment necessary for performing the work required to complete the Contract.

The Mines Road Portal Project is located 2.4 miles north of the intersection of Route 738 and Route 711 (marked on the Map); the intersection is 3.1 miles from the City Limits of Pulaski, Virginia. The proposed reclamation will include the closure of two dangerous openings: -one Priority 1 Vertical Opening (VO) and -one Priority 1 Portal (P). The project is in the Pulaski Problem Area VA-0822 and within the Pulaski VA USGS Quadrangle. GPS coordinates near the center of the project area are latitude N, 80 longitude. The nearest residence with a physical 911-address is the Breedlove residence located to the north at 6196 Mines Road, Pulaski, VA 24301. The access gate is to the right of the mailboxes at the four way-intersection and should be locked each day upon departure.

1.B PROCEDURE

It shall include the transportation of personnel, equipment and operating supplies to the site, and other preparatory work at the site.

1.C MEASUREMENT AND PAYMENT

Measurement: Measurement for MOBILIZATION shall be Each for the job as shown in the project Scope of Work.

Payment: Total payment for MOBILIZATION shall not exceed 10% of the Base Bid amount. Exceeding this limit may be basis for rejection of the bid as non-responsive. The Base Bid amount shall be the total of all sub-items on the Bid Schedule, less the amount for Mobilization.

Payment for MOBILIZATION shall be the Each amount listed on the Bid Schedule and shall constitute full compensation for all labor, equipment, materials and incidentals necessary to complete the work.

Payment for MOBILIZATION shall be made on the basis of 50% of the Each amount on the first invoice submitted and the remaining 50% on the final invoice.

2. PROJECT SIGN

2.A SCOPE

The item shall include the installation, maintenance duration, and remove upon completion of all work. Place the sign near the four-way intersection at the row of mailboxes.

2.B MATERIAL

2.B.i Sign:

mounted on posts appropriate for the specific site. Metal of at least 12-gauge thickness may be substituted for plywood.

2.B.ii Paint: The sign shall be painted with at least two coats of paint, one of which shall be a primary coat. The paint shall be a quality enamel exterior type comparable to that used in the area for commercial exterior signs. The paint scheme shall

2.B.iii Posts:

still achieve a height to be visible from the public access road. The sign shall be mounted on the posts to ensure the bottom of the sign is a minimum of 3 feet off the ground.

2.C PROCEDURE

The sign shall read as follows with arrow to the RIGHT:

2.D MEASUREMENT AND PAYMENT

No separate payment will be made for PROJECT SIGN. This work shall be considered incidental to Mobilization and included therein.

3. ACCESS ROAD UPGRADE

3.A SCOPE

The work shall consist of upgrading the existing site access road with surface treatment and minimal grubbing and disposal of trees, tree stumps, brush, snags, logs, and debris as necessary and as deemed so by the Project Inspector to reach the lower portal.

3.B MATERIAL

3.B.i Crusher Run Aggregate: VDOT No. 26 Stone as specified in Section 205 of the VDOT Road and Bridge Specifications to be used as needed for road bedding material to transport equipment and material to access the project site.

3.B.ii VDOT No. 21B Stone as specified in Section 208 of the VDOT Road and Bridge Specifications.

3.C ACCESS ROADS

3.C.i Alignment: The Drawings show the approximate routes of the access road (existing only). In general, this route is chosen along an existing trail or alignments that normally display good drainage. These routes have also been selected to minimize the length of road that must be surfaced. Care must be exercised to avoid disturbance to any historical, archeologically or environmentally significant features associated with the site; these include old roadbeds, spoil piles, building foundations, rubble, structures, mounds and wetlands.

During access road upgrade via surfacing, the Contractor shall select the route that results in the removal of the fewest trees possible. No trees larger than 6 inches in diameter shall be damaged or cut without permission from the Agency.

All access road routes must be walked with the Project Inspector prior to construction and trees that must be removed shall be flagged prior to the walk.

3.C.ii Construction: Access roads shall be graded to remove humps, ridges and holes; and, sheet flow shall be ditched to convey storm runoff away from roads. At locations where a road crosses a drainage swale, coarse aggregate base material shall be used to stabilize the soft area. There is one culvert crossing proposed at the portal site. See that section for instructions on installation.

3.C.iii Maintenance: Access roads shall be maintained at all times during construction. Areas that show excessive rutting shall be graded and additional stone shall be placed as directed by the Project Inspector. Roads shall be maintained to prevent excessive amounts of mud and debris from being picked up by construction vehicles and deposited on the surrounding public street access. Alternate aggregate sizes may be used at the discretion of the Project Inspector to grade and maintain access routes based on unforeseen circumstances.

3.D MEASUREMENT AND PAYMENT

3.D.i Measurement: Measurement for ACCESS ROAD UPGRADE shall be on a per LINEAR FEET basis for all equipment operation and manual labor accepted and approved by the agency to perform the work.

3.D.ii Payment: Payment for ACCESS ROAD UPGRADE shall be on a Unit Cost basis for the actual work performed and the Unit Price listed on the Bid Schedule. Recompensation for all materials and incidentals required to perform the work shall be given with proof of purchase.

*Payment for the AGGREGATE used in ACCESS ROAD UPGRADE shall be included in Section 5

AGGREGATE.

4. CLEARING & GRUBBING

4.A SCOPE

The work shall consist of minimal clearing & grubbing and the on-site disposal of trees, tree stumps, brush, snags, logs, and debris as necessary and as deemed so by the Virginia Energy project inspector for the contractor to reach the lower portal with the necessary equipment.

4.B CLEARING / GRUB WORK

Remove all materials that are cleared, grubbed, stripped or otherwise included as part of this work from the work area to the surrounding and adjacent area by mulching and spreading evenly without accumulation of depth, thickness, or piles. The Contractor shall incorporate the mulch into any adjacent areas reasonably necessary to perform the work when directed to do so by the Project Inspector.

4.C MEASUREMENT AND PAYMENT

4.C.i Measurement: Measurement for CLEARING & GRUBBING shall be on a per-ACRE basis for all equipment operation and manual labor accepted and approved by the agency required to remove debris and any downed trees.

4.C.ii Payment: Payment for CLEARING & GRUBBING shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to complete the work.

5. AGGREGATE

5.A SCOPE

This item shall consist of the preparation, haulage, and placement of aggregate stone on the site.

5.B MATERIAL

5.B.i VDOT No. 21B Stone as specified in Section 208 of the VDOT Road and Bridge Specifications.

5.B.ii VDOT No. 26 Crusher Run as specified in Section 205 of the VDOT Road and Bridge Specifications.

5.B.iii VDOT No. 57 Stone as specified in Section 203 of the VDOT Road and Bridge Specifications.

5.B.iv VDOT No. 78 Stone as specified in Section 203 of the VDOT Road and Bridge Specifications.

5.B.v VDOT Gabion Stone as specified in Section 204 of the VDOT Road and Bridge Specifications.

5.C PROCEDURE

5.C.i Aggregate shall be transported and handled to prevent dirt and debris from entering the stone; and to prevent spalling and breakage of the stone.

5.C.ii Aggregate shall be placed according to Construction Drawings and as directed by the Project Inspector.

5.D MEASUREMENT AND PAYMENT

5.D.i Measurement: Measurement for AGGREGATE shall be on a per TON basis for all equipment operation and manual labor accepted and approved by the agency required to deliver material to the project site. All other handling of material shall be measured with the associated Specification.

5.D.ii Payment: Payment for AGGREGATE shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to complete the work.

6. SILT FENCE

6.A SCOPE

This item shall consist of furnishing, maintaining, and removing temporary silt fence as directed by the Project Inspector around the work area. Silt fence shall be maintained as necessary to prevent siltation from entering the streams.

6.B MATERIALS

All constituent elements of the silt fence shall conform to the notes and dimensions as shown on the Drawings.

6.B.i Silt Fence filter fabric shall be Terra Tex SD-F made by Hanes Geo Components or equivalent, and shall be specifically recommended for this purpose by the manufacturer and shall meet or exceed the following specifications:

U.V. Resistance (ASTM D-4355) 80% Grab Tensile (ASTM D-4632) 125 lbs Permittivity (ASTM D-4491) 0.1 sec-1 Flow Rate (ASTM D-4491) 8 gpm/ft2

6.B.ii Silt Fence posts provide a sound anchor for the supporting wire fence and/or filter fabric.

6.C PROCEDURE

Silt Fence shall be placed at all necessary locations specified on the Construction Drawing and as approved by the Project Inspector. Vertical wood posts shall be protected by means of a metal cap or other device to prevent damage when hammers are used to drive the posts into the ground.

6.D MAINTENANCE

Silt fences shall be maintained in a functionally sound condition and accumulations of silt shall be promptly removed each day.

Following the usefulness of each structure, it shall be removed and disposed of in an approved location.

6.E MEASUREMENT AND PAYMENT

6.E.i Measurement: Measurement for SILT FENCE shall be on a per LINEAR FEET basis for all equipment operation and manual labor accepted and approved by the agency to perform the work.

6.E.ii Payment: Payment for SILT FENCE s shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to complete the work.

7. CULVERT

7.A SCOPE

This item covers the furnishing of all labor, equipment, and material for installation of a temporary culvert pipe as shown on the Drawings, the nearby relocation of the same culvert via orientation change, and the final culvert installation as a permanent access road drainage structure.

7.B MATERIALS

7.B.i VDOT No. 78 Stone as specified in Section 203 of the VDOT Road and Bridge Specifications.

7.B.ii VDOT No. 26 Stone as specified in Section 204 & 414 of the VDOT Road and Bridge Specifications.

7.B.iii VDOT Gabion Stone as specified in Section 204 & 414 of the VDOT Road and Bridge Specifications.

7.B.iv Culvert / Drainpipe: The culvert shall be a minimum of 18 diameter corrugated, double-wall, flexible high-density polyethylene (HDPE) / (ADS N-12® ST IB) pipe or equivalent

7.C PROCEDURE

Temporary: The excavation shall be sufficient for CULVERT placement parallel to the access road and within the embankment toe for access to the portal. The culvert shall be installed to a sufficient length and width to allow for forms, bracing and supports, if necessary to prevent sidewall collapse. The Contractor shall furnish and place such supports, should they be required by subsurface conditions, depth, inclement weather, etc., and subsequently remove such support material.

with compacted soil or compacted VDOT No. 26 stone (crusher run).

Permanent: Remove the same said CULVERT from the temporary installation, relocate and orient perpendicular to the access road and install permanently as a drainage structure. The road ditch excavation should shape the inlet of the CULVERT area to conform to both the grass-lined ditch formed for mine portal discharge (See Section 11 GRASS-LINED DITCH) and any surrounding areas. Finally, if necessary, ensure positive drainage by creating minimum inlet sump and a shaped discharge outlet to prevent impoundment and erosion. Place appropriately sized stone such as VDOT Gabion Stone and smaller aggregates within, under, around, and on outlet side slopes and steep-slope conveyance until matching natural drain way contours. The final cover should be no less than one foot but sufficient to prevent collapse while maintaining slope.

Fill and compact the excavated soil back into the trench. See Culvert on the Construction Drawings for details. Revegetate any disturbed ground as specified in Section 12 REVEGETATION.

7.D MEASUREMENT AND PAYMENT

7.D.i Measurement: Measurement for CULVERT (Temporary) shall be on a per LINEAR FEET basis for all equipment operation and manual labor accepted and approved by the agency to perform the work.

7.D.ii Payment: Payment for CULVERT (Temporary) shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to complete the work.

7.D.iii Measurement: Measurement for CULVERT (Permanent) shall be on a per LINEAR FEET basis for all equipment operation and only the manual labor, installation, and incidentals accepted and approved by the agency to perform the work of the relocation of the temporary. NO materials.

7.D.iv Payment: Payment for CULVERT (Permanent) shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, incidentals, etc., necessary to complete the relocation work to install the temporary CULVERT in a PERMANENT location under the road. The material is the same pipe as the temporary; therefore, NO additional payment for materials will be made for the permanent installation.

NOTE: The aggregate used in this section shall be paid under the Section 5 AGGREGATE. See that section for the UNIT COST for the tonnages used in this section.

8. CHAIN-LINK SAFETY PERIMETER FENCE

8.A SCOPE

This item covers the erecting and placement of chain-link fence according to the construction drawings and these specifications. All materials listed shall be included in the L.F. unit pricing.

8.B MATERIAL

8.B.i shall be Type 1 galvanized steel, 2 in. mesh pattern, minimum 9-gauge thickness.

8.B.ii CORNER POST shall be Type 1 galvanized steel, 2-3/8 in. diameter, minimum 9-gauge thickness.

8.B.iii BOTTOM & TOP RAIL shall be Type 1 galvanized steel, 1-5/8 in. diameter, minimum 9-gauge thickness.

8.B.iv FITTINGS, CLIPS, AND MISCELLANEOUS HARDWARE shall be Type 1 galvanized steel, matching or exceeding the quality and thickness of the fence fabric or posts on which the hardware is being used.

8.B.v A3 GENERAL PURPOSE CONCRETE as specified in Section 217 of the VDOT Road and Bridge Specifications.

8.B.vi Warning Signs attached to the western and eastern sides of the Octagon shall be posted for restricted access. These signs shall have lettering at least three (3) inches high and reflective. Post signs toward the upper portion of the 48-inch high fencing fabric. The wire ties from the vertical opening section may be used to secure the sign to the fence in at least four places at six inches apart.

8.C PROCEDURE

Installation: All 12 posts shall be CORNER posts and shall be set first utilizing the wire panel assembly as a guide template for spacing (See Drawing for dimensions). Note that there is an offset of 0.5 feet, not centered, to provide an overlap that never encroaches on the six by six inches opening squares. Then, proceed to install the wire bull panels per the specifications listed in the next section, SECTION 9. Once the wire panels are in place, return to this section to complete the perimeter vertical fencing aligned with the panel edges. The Contractor shall take precautions to prevent falling / entrance into the subsidence hole especially when the time arrives for removal of the hay-ring if it cannot stay in place during the post installation.

For posts placed in rock, drill a hole a minimum of 12 inches into the rock with a minimal diameter 2 inches larger than the greatest dimension of the post. The drilled hole and any remaining space above the rock hole shall be filled with concrete for a smooth surface finish. For posts placed in undisturbed soil, install posts to the minimum depth shown in the typical details of the construction drawings. All posts are to be set in concrete at a minimum of 2 feet into undisturbed soil with a minimum of 9-inch diameter of concrete around each post.

Posts shall be spaced a maximum of five (5) feet apart diagonally, but typically four (4) feet shall suffice to align with the proposed mesh assembly of Section 9. Posts should be along the entire length of perimeter fence in the shape of an octagon (stop sign) as close as possible. Posts set in concrete shall maintain a minimum of 3 inches of concrete on all sides of the post. All posts shall be installed with rounded caps or loop caps. For the purpose of anchoring the mesh panel covering, be sure to install both top and BOTTOM rails for securing the fence and the perimeter cables.

Install the top rail as a continuous unit through the loop caps. Couplings used to join the rail segments shall be placed to allow for expansion/contraction.

Install the fencing fabric as one continuous running span the entire length of the fabric roll, or as limited by the topography of the ground. A corner post shall be placed anywhere that the fencing fabric ends or must be cut.

Fencing fabric shall be stretched tight and attached to the end posts using the tension bar with 4 tension bands per post. Tie wires shall be used to secure the fence fabric to the top rail, line posts, and corner posts after the fence fabric has been pulled tight and secured to the end posts. Tie wires shall be placed approximately every 2-3 feet along the top rail. Fence fabric shall be secured to the line and corner posts with a minimum of four (4) tie wires. Fencing fabric shall follow the general contour of the land with a minimum ground clearance of 1 inch, and a maximum ground clearance of 4 inches. Tie wires shall be placed approximately every 12-18 inches along the bottom rail. See Construction Drawings for further details.

the chain link enclosure and the other sign on the eastern side of the chain link fence.

8.D MEASUREMENT AND PAYMENT

8.D.i Measurement: Measurement for CHAIN-LINK FENCE shall be on a per LINEAR FEET basis for all equipment operation, hand tools, and manual labor accepted and approved by the agency to perform the work.

8.D.ii Payment: Payment for CHAIN-LINK FENCE shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to

9. VERTICAL OPENING ENCLOSURE: WELDED WIRE PANEL GRID

9.A SCOPE

This specification covers the construction activities, equipment, and accessories necessary to safely, and properly close a vertical subsidence opening six feet in diameter using anchored, welded-wire panels within the designated project area as per the Drawings and Specifications. Take note of the Time-of-Year restrictions placed upon the work to be completed by October 15th. See the Vertical Opening and the Mine Closure typical detail(s) in the construction drawings which delineate the orientation of each panel, the arrangement, and the perimeter cable as well as the location of the 12 posts.

9.B MATERIAL

9.B.i Perimeter Cable shall mean a A1023.

9.B.ii Wire Panel Grid shall be made of at least 4 panels of heavy- 5 16 galvanized before welding -gauge wire rods) commercial grade conforming to specification ASTM A1023.

9.B.iii Wire Ties shall be utilized to connect the panels to each other; tie wire which shall be at least 19- gauge / 1mm diameter zinc-coated via electro-galvanized process and have a minimum tensile strength of 300 MPa shall be utilized to connect the panels to each other; tie wire which shall be at least 19- gauge / 1mm diameter zinc coated via electro-galvanized process and have a minimum tensile strength of 300 MPa (43,500 psi).

9.B.iv 5/ U-Bolt Cable Clamps shall be used to secure the beginning and ending loops of the perimeter cable upon tensioning. A minimum of two clamps shall be used to secure the ends; clamps shall conform to the same ASTM A1023 guide.

9.C PROCEDURE

9.C.i The Contractor shall plan and conduct the work in and around vertical opening in a safe manner. Steps shall be taken to provide for the testing for methane, carbon monoxide (black damp) or oxygen-depletion; take precautions to prevent falling / entrance into the subsidence hole until timely removal of the hay-ring when it cannot stay in place during the post installation.

GRID: Install four (4), -

-diameter opening. The positioning should be such that the openings are n Configure panel assembly to provide a minimum of 2.5 feet of coverage beyond the sides of the vertical opening which is currently surrounded by a 6-foot diameter hay ring (to be removed). The length and width of the grid shall vary slightly based on slope conditions, extending to a minimum of

(1.5 feet) when tied to each other to form a rigid cross centered over the six-foot diameter opening. This results in a pattern 6-inches off-center because of the spacing opening requirement; the center of the N -S panels will NOT align with the center of the E-W panels. See the alternating corner dimensions on the drawings.

A trench and berm must be constructed above to provide a water shedding device to prevent surface water entry into the vertical opening and also a firm bearing surface against which the grid can be pulled. Create a loop via the U-bolt cable clamp and secure to the first post. Weave the 7×19 perimeter cable through the grid and tension uniformly around the anchorage posts. Pull the grid tightly against the twelve Chain-Link fence perimeter posts. Tie meter cable and all 13 anchorage posts. Provide additional tie- Construction Drawings for panel layout and fence posts anchorage details. Secure the ends via the U-bolt clamps upon circling the last post.

9.D MEASUREMENT AND PAYMENT

9.D.i Measurement: Measurement for VERTICAL OPENING ENCLOSURE shall be on a per SQUARE FEET basis for all equipment operation, hand tools, and manual labor accepted and approved by the agency to perform the work.

9.D.ii Payment: Payment for VERTICAL OPENING ENCLOSURE shall b shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to complete the work.

10. MINE PORTAL CLOSURE: GABION BACKFILL W/ BAT GATE

10.A SCOPE

10.A.i This specification covers the construction activities, equipment, and accessories necessary to safely, and properly, close a mine portal within the designated project area as per the Drawings and Specifications. Take note of the Time-of-Year restrictions placed upon the work from August 15 until October 15th. See the Portal Mine Closure typical detail(s) in the construction drawings. This enclosure WILL require the wet seal drainpipe (ADS N-12® ST IB pipe or equivalent).

10.B MATERIAL

10.B.i VDOT Gabion Stone as specified in Section 204 of the VDOT Road and Bridge Specifications.

10.B.ii Portal Drain Pipe shall mean 6 diameter corrugated, double-wall, soil tight, flexible high-density polyethylene (HDPE) pipe meeting ASTM F2648 specification. An example for this specification is ADS N-12® ST IB pipe or equivalent.

10.B.iii Bate Gate Pipe: The pipe shall be 24 diameter corrugated, double-wall, flexible high-density polyethylene (HDPE) pipe meeting ASTM F2648 specification. An example being ADS N-12® ST IB PIPE or equivalent.

10.B.iv Bat Gate

a) Horizontal Bars shall be 4 4 -36 Mild Steel Angle Iron.

b) Brackets shall be -36 Mild Steel Angle Iron.

c) Anchor Bolts shall be with sufficient length to assemble the bat gate.

10.C PROCEDURE

10.C.i The Contractor shall plan and conduct the work in and around portals in a safe manner. Steps shall be taken to provide for the testing for methane, carbon monoxide (black damp) or oxygen. If a collapsed portal is to be day-lighted, particular attention shall be given to the danger of bad air flowing from the mine. Atmospheric testing shall be conducted before and during any activity that could expose personnel to mine gases released from the opening. If hazardous atmospheric conditions are detected, work shall cease and personnel shall withdraw to a safe location until the condition is evaluated and appropriate corrective measures are implemented.

When the work involves the draining of a flooded mine, the water shall be tested to determine if it needs to be treated before being released into the receiving stream. The mine water shall be tested for pH, iron and manganese. If the pH is below 6.0, the iron above 6.0 ppm or the manganese above 4.0 ppm, the water must be treated. The treatment plan shall be a temporary requirement for the volume of water that is impounded in the mine works. When the project work is completed or the mine is drained, the treatment structures shall be removed. The general treatment plan shall contain the adjustment of pH to within the range of 6.0 to 9.0 and a settling basin to collect the precipitant.

The portals shall be prepared for closure by cleaning up the site. Soil, rock, and debris that have fallen in front of the portal shall be removed. Rock falls and debris within the portal shall only be removed to the extent necessary to install pipes and as required to install the closures. Any material blocking the flow of water from the mine shall be removed.

It is envisioned that this will be accomplished by means of a backhoe reaching into the opening and pulling out the material. Personnel shall not be under the roof of the mine to perform any work. The clean-up should remove material from rib to rib and as far out in front to install the closure and allow drainage from the mine.

Construction of the mine portal closure is to be conducted in a safe manner using proper equipment for the work being performed. Spotters will be used to control work such that all material is prevented from rolling, slipping, or sliding down slope.

Pipe shall be installed in portal closures, see Portal Schedule for Details, to either facilitate drainage or to provide access for wildlife habitat. Prior to closure, the Contractor shall install pipe as designated and, in the manner, shown on the Drawings, unless otherwise directed by the Agency. Substitution of pipe shall require approval from the Agency prior to use.

A HIGH-DENSITY POLYETHELENE (HDPE) PIPE with dimensions specified in Exhibits and attached bat gate shall be installed in the top of the portal with the bat gate placed on the outside of the HDPE. The HDPE shall be placed against the mine roof to protect bats from predators. The pipe shall be extended a minimum of 2 feet beyond the pushed in stone into the mine opening and extend 2 feet beyond the stone on the outside of the opening.

10.C.ii Gabion Backfill: Gabion stone is to be placed to maximum extent possible over the top of the opening with the material and compacted as possible with the excavator due to limited room.

All material from excavation of the portal area shall be blended into the adjacent areas and revegetated. Slopes shall be stable and approved by the Project Inspector before seeding the area.

Abrupt surface transitions, pockets, protrusions, windrows or undrained areas shall be eliminated, unless approved to be left by the Agency. Large stones or debris identified as detrimental to seeding shall be removed and disposed of as directed by the Project Inspector.

Prior to construction of portal closures, the Contractor shall identify to the Project Inspector, the location(s) for temporary storage of Materials, if the closures cannot be constructed the same day the Materials are delivered. The Contractor shall secure approval from the Agency prior to storage of the materials if not stored immediately adjacent to the opening.

All areas disturbed by this work shall be revegetated in accordance with Section 12 REVEGETATION.

10.D MEASUREMENT AND PAYMENT

10.D.i Measurement: Measurement for MINE PORTAL CLOSURE shall be on an EACH basis for all equipment

10.D.ii Payment: Payment for MINE PORTAL CLOSURE shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to

11. GRASS-LINED DITCH

11.A SCOPE

This item shall consist of excavating and forming a shallow, grass-lined ditch as detailed in the Construction Drawings along with general grading and earthwork of the adjacent area to ensure capture of the surface runoff. The grass-lined ditch shall be established with positive drainage to ensure flow away from the portal to existing natural drainage via permanent culvert.

11.B MATERIAL

Erosion Control Matting: The erosion control blanket shall consist of a machine-produced blanket of natural fibers. The blanket thickness shall be consistent and evenly distributed over the entire area of the blanket. The mulch blanket shall have both sides covered with an extra heavy-duty plastic netting, which is photodegradable and a mesh opening of approximately

Enkamat 7020W matting, or equivalent products. Any material used shall be approved by the Agency prior to application and installation.

11.C PROCEDURE

Excavate the ditch to the dimensions shown in the Construction Drawings. Actual alignment and grade shall be determined in the field by the Contractor and Project Inspector cooperation. The grade does not have to be uniform but must avoid low recommendations. Revegetate any other disturbed ground not covered by the matting as specified in Section 12

REVEGETATION.

11.D MEASUREMENT AND PAYMENT

11.D.i Measurement: Measurement for GRASS-LINED DITCH shall be on a LINEAR FEET basis for all equipment

11.D.ii Payment: Payment for GRASS-LINED DITCH shall be on a Unit Cost basis for the work performed at the Unit Price listed on the Bid Schedule; the price shall include all labor, equipment, materials, incidentals, etc., necessary to

12. REVEGETATION

12.A SCOPE

This item covers the furnishing of all labor, equipment and material for preparing the seedbed, liming, fertilizing, tilling, seeding and mulching on the designated areas. Designated areas encompass all areas and access roads within the project limits.

12.B CERTIFICATION

The Contractor shall certify that all seed, soil amendments and mulch to be used in vegetation operations meet the requirements of these specifications and governing authorities.

12.C MATERIALS

12.C.i Lime: Lime material shall be ground agricultural limestone and shall conform to the minimum Calcium Carbonate Equivalent (C.C.E.) guaranteed by the supplier and approved by the Project Inspector.

a) Application: Lime shall be applied as directed by the Project Inspector prior to final grading (tracking) for incorporation into the soil.

b) Lime Rate: Lime shall be spread at two (2) tons per acre.

c) Lime Analysis: Agricultural limestone applied for seeding shall have a minimum C.C.E. of ninety percent (90%). The supplier shall certify this analysis.

12.D SEEDING

All seeding work shall be performed by the Contractor or licensed subcontractor, approved by the Agency, with demonstrated experience and who has the necessary equipment to complete all operations required. Seeding may be accomplished by the use of a hydroseeder or other methods as approved by the Agency.

12.D.i Seeding Schedule

Upon completion of grading and liming operations, the areas shall be seeded. Areas eroded by rainfall or crusted over shall be repaired prior to seeding.

The Project Inspector shall approve all seeding operation time schedules. It is recommended that the seeding operations be confined between February 15th to June 15th, and September 1st to November 1st to obtain satisfactory results.

There may be some occasions such as during winter or summer months, when some areas may require temporary seeding. The Project Inspector may require these operations when deemed necessary to prevent erosion and sedimentation. Temporary seed mixtures and rates shall be applied during these periods.

12.D.ii Permanent Seed Mixture

Permanent seed mixture and rates are specified below. The Project Inspector shall approve any substitution or adjustments.

Permanent Seed

Name Lbs. /Acre Tall Fescue 15 Annual Ryegrass 12 Timothy 8 Red Clover 6 Perennial Ryegrass 5 Birdsfoot Trefoil 2 White Dutch Clover 1 Redtop Grass 1

TOTAL 50

12.D.iii Temporary Seeding

Temporary seeding mixtures and rates are specified below. The Project Inspector shall approve any substitution or adjustments.

Summer Mixture Name Lbs. /Acre

German Foxtail Millet 40 Annual Ryegrass 20

TOTAL 60

Winter Mixture

Name Lbs. /Acre

Annual Ryegrass 20 Cereal Rye 40

TOTAL 60

Permanent seed mixtures shall be applied at the first available seeding period on all temporary seeded areas.

12.E FERTILIZER

12.E.i Type / Rate

Fertilizer shall be standard commercial product. The rate of fertilizer applied shall be 300 pounds per acre of 16-27- 14 or equivalent. Fertilizer may be applied by mechanical spreader or hydraulically by a hydroseeder. Fertilizer and seed may be applied at the same time with a hydroseeder. Water used in a hydroseeder shall have a pH between 6.0 and 9.0.

12.E.ii Inoculant

Inoculant shall be mixed with legume seed prior to mixing with other seeds. Pre-inoculated legume seed from a supplier may be used.

12.F MULCHING

12.F.i Wood Cellulose or Paper Fiber

Wood cellulose or paper fiber mulch for use with a hydroseeder shall be applied at the rate of 1,500 pounds per acre.

This mulch shall be applied along with seed and fertilizer mixtures.

12.F.ii Straw or Hay Mulch

Material for mulching shall consist of dry straw or hay, free of noxious weeds. The mulch shall be reasonably bright in color and shall not be musty, moldy, caked, decayed or very dusty. The application rate for hay or straw shall be 2,000 pounds per acre. Erosion control blanket may be substituted for straw or hay mulch.

12.G LAWN SEED MIXTURE

Lawn seed mixture and rates are specified below. The Project Inspector shall approve any substitution or adjustments.

Permanent Seed

Name Lbs. /Acre Kentucky Bluegrass 20 Perennial Ryegrass 10 Ladino Clover 5 Red Fescue 15

TOTAL 50

12.H MAINTENANCE

Areas reseeded or replanted shall also include construction maintenance areas where vegetation is destroyed due to repair work. Progressive seeding of small project areas shall be required during the complete project.