Attachment_No._2_Project_Specifications.pdf

PROJECT SPECIFICATIONS

WILDCAT BRANCH AREA C COAL WASTE REMOVAL – PHASE 2

USDA FOREST SERVICE

DANIEL BOONE NATIONAL FOREST

PULASKI COUNTY, KENTUCKY

Contents

SECTION 01 - ADMINISTRATIVE REQUIREMENTS

SECTION 02 - MOBILIZATION

SECTION 03 – TRAFFIC CONTROL

SECTION 04 - EROSION AND SEDIMENT CONTROL

SECTION 05 – COAL WASTE EXCAVATION

SECTION 06 – COAL WASTE REPOSITORY CONSTRUCTION

SECTION 07 - SEEDING

3 SECTION 01 - ADMINISTRATIVE REQUIREMENTS

SECTION 01 - ADMINISTRATIVE REQUIREMENTS

PART 1 – GENERAL

1.1 PROJECT MANAGEMENT AND COORDINATION

A. Subcontract List: Submit a written summary identifying individuals or firms proposed for each portion of the Work.

B. Coordinate construction operations included in different Sections of the Specifications to ensure efficient and orderly installation of each part of the Work.

1.2 SUBMITTAL ADMINISTRATIVE REQUIREMENTS

A. General Submittal Procedure Requirements: Prepare submittals as required in 1.3, below, or by individual Specification Sections for Contracting Officer’s approval.

1.3 CONTRACTOR'S CONSTRUCTION SCHEDULE

A. Submit a comprehensive, fully developed schedule within 14 days of date established for the Notice to Proceed.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXECUTION

3.1 SUBMITTAL REVIEW

A. Review each submittal and check for coordination with other Work of the Contract and for compliance with the Contract Documents.

B. The contracting officer will review each submittal and approve or notify contractor of any deficiencies or modifications required. Allow up to 10 days for review.

PART 4 – MEASUREMENT OF WORK

4.1 ACTUAL QUANTITY

A. For items designated as ACTUAL QUANTITIES (AQ), Take and record measurements and perform calculations to determine pay quantities for invoicing for work performed. Take or convert measurements of work according to U.S. Customary (Metric) measure.

B. Unless otherwise specified, measure when the work is in-place and complete according to the contract. Measure the actual work performed, except do not measure work outside the design limits or other adjusted or specified limits (staked limits). Review each submittal and check for coordination with other Work of the Contract and for compliance with the Contract Documents.

4 SECTION 01 - ADMINISTRATIVE REQUIREMENTS

4.2 CONTRACT QUANTITY

A. For items designated as CONTRACT QUANTITIES (CQ), the quantity to be paid is the quantity listed in the bid schedule. The contract quantity will be adjusted for authorized changes that affect the quantity or for errors made in computing this quantity. If there is evidence that a quantity specified as a contract quantity is incorrect, submit calculations, drawings, or other evidence indicating why the quantity is in error and request in writing that the quantity be adjusted.

END OF SECTION 01

5 SECTION 02 - MOBILIZATION

SECTION 02 - MOBILIZATION

PART 1 - GENERAL

1.1 GENERAL

A. This work consists of moving personnel, equipment, material, and incidentals to the project and performing work necessary before beginning work at the project site. This work also includes obtaining permits, insurance, and bonds.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

PART 4 - MEASUREMENT AND PAYMENT

4.1 GENERAL

A. Payment for MOBILIZATION will be made on a lump sum basis and is included as Pay Item 01.

B. Progress payments for mobilization by the lump sum will be paid as follows:

1. Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

2. When 5 percent of the original contract amount is earned from pay items (not including mobilization), 50 percent of the mobilization pay item, or 5 percent of the original contract amount, whichever is less, will be paid.

3. When 10 percent of the original contract amount is earned from pay items (not including mobilization), 100 percent of the mobilization pay item, or 10 percent of the original contract amount, whichever is less, will be paid.

4. Any portion of the mobilization pay item in excess of 10 percent of the original contract amount will be paid after final acceptance

END OF SECTION 02

6 SECTION 03 – TRAFFIC CONTROL

SECTION 03 – TRAFFIC CONTROL

PART 1 - GENERAL

1.1 GENERAL

A. This work consists controlling and protecting public traffic adjacent to and within the project.

1.2 SUBMITTALS

A. Perform no work that interferes or conflicts with traffic or existing access to the roadway until a traffic control plan has been approved. All required signs will be in place and approved prior to beginning work on the project.

PART 2 - PRODUCTS

2.1 Traffic control products and materials shall conform to the MUTCD regulations.

PART 3 - EXECUTION

3.1 GENERAL

A. The haul route may be closed to public traffic at locations designated or agreed upon with the Contracting Officer in the Traffic Control Plan.

B. Adjust traffic control plan as needed.

C. All traffic control materials shall be removed following completion of the work.

4.1 Payment for Traffic Control will be made on a lump sum basis and is included as Pay Item 02.

END OF SECTION 03

7 SECTION 04 – EROSION AND SEDIMENT CONTROL

SECTION 04 – EROSION AND SEDIMENT CONTROL

PART 1 - GENERAL

1.1 GENERAL

A. This work consists of furnishing, constructing, and maintaining soil erosion and sediment control devices to eliminate or minimize pollutants in stormwater discharges from the project.

1.2 SUBMITTALS

A. Erosion and Sediment Control Plan: Prior to the start of construction, submit a written plan that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control. An alternate erosion control plan may be submitted 30 days before intended use.

PART 2 - PRODUCTS

2.1 Erosion control products and materials shall conform to industry standards and be identified in the Erosion and Sediment Control Plan.

PART 3 - EXECUTION

3.1 General

A. Incorporate all permanent erosion control features into the project at the earliest practicable time, as outlined in the approved plan.

B. When erosion control measures are not functioning as intended, immediately take corrective action.

C. Construct and implement soil erosion and sediment control measures as follows:

(a) Construct temporary controls in incremental stages as construction proceeds;

(b) Construct temporary slope drains, diversion channels, and earth berms to protect disturbed areas and slopes;

(c) When a soil disturbing activity within a portion of the project is complete, apply permanent measures to the finished slopes and ditches within 14 days;

(d) When a soil disturbing activity within a portion of the project has temporarily ceased, apply temporary measures within 14 days;

(e) Construct and maintain soil erosion and sediment controls on and around soil stockpiles;

(f) Following each day’s grading operations, shape earthwork to minimize and control erosion from stormwater runoff; and

8 SECTION 04 – EROSION AND SEDIMENT CONTROL

(g) Maintain stabilized construction exits to minimize tracking of soil onto existing roads

PART 4 - MEASUREMENT AND PAYMENT

4.1 Payment for Erosion and Sedimentation Control, including preparation of the Erosion Control and Pollution Prevention Plan will be made on a lump sum basis and is included as Pay Item 03.

END OF SECTION 04

9 SECTION 05 – COAL WASTE EXCAVATION

SECTION 05 – COAL WASTE EXCAVATION

A. Consists of all work to remove up to 10,000 cubic yards of coal waste and transportation to the repository location. Includes clearing, grubbing, and removal and stockpiling of topsoil and non-coal materials. Excavation limits will be identified in the plans and confirmed in the field.

Following excavation, topsoil and other conserved materials shall be used to regrade the site and construct stable slopes. Seed and mulch shall be applied following stabilization activities.

B. Actual volume of coal waste excavated and transported will be determined based on the depth and composition of the excavated material. Non-coal material shall remain on site and be incorporated back into the finished ground.

C. Work also includes any required maintenance to the haul route for hauling activities. The temporary crossing shall be opened prior to hauling activities and stabilized and closed following completion of work.

1.2 RELATED WORK

A. Section 03 – TRAFFIC CONTROL B. Section 06 – COAL WASTE REPOSITORY CONSTRUCTION C. Section 07 – SEED AND MULCH

PART 2 – PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.1 GENERAL

A. Excavation access location shall be approved by the Contracting Officer prior to beginning work.

Any changes to the excavation access route shall be approved by the Contracting Officer in advance.

B. Topsoil shall be removed and stockpiled at an approved location and reused on finished slopes.

C. Excavation limits and depths shall be determined in the field, based on depth of coal material and finished slope grades. Finished slopes shall be no steeper than 1V:1.5H.

D. Following excavation, topsoil and other non-coal materials shall be used to regrade the site and construct stable (1V:1.5H) slopes.

E. Seed, lime, fertilizer, and mulch shall be applied following stabilization activities.

F. Coal waste material shall be hauled to the repository location and placed as per Section 06.

G. The haul route shall be kept in condition to allow safe hauling operations.

10 SECTION 05 – COAL WASTE EXCAVATION

A. Payment for COAL WASTE EXCAVATION and all associated activities shall be by the cubic yard, as measured in the hauling vehicle or as placed in the repository, and is included in Pay Item 04 as an Actual Quantity.

END OF SECTION 05

11 SECTION 06 – COAL WASTE REPOSITORY CONSTRUCTION

SECTION 06 – COAL WASTE REPOSITORY CONSTRUCTION

A. Consists of constructing a repository for disposal of excavated coal waste. Includes clearing, grubbing, topsoil removal and stockpiling, and all excavation required to prepare the subgrade.

Subgrade shall be smooth and compacted (see specifications) and meet the dimensions shown on the plans. Repository construction includes construction of an anchor trench, construction of an underdrain and gravel base, installation of a PVC geomembrane top liner (cover) and optional bottom liner, as shown on the plans, replacement of topsoil, finish grading, and application of seed and mulch.

B. Inclusion of the bottom liner, including the geomembrane and geotextile rub sheets, will be determined by the Contracting Officer, based on the conditions of the excavation. If groundwater is present, it is anticipated that the bottom liner would be included. If the excavation appears dry, it is anticipated that the bottom liner would not be included.

1.2 RELATED WORK

A. Section 05 – COAL WASTE EXCAVATION B. Section 07 – SEED AND MULCH

1.3 SUBMITTALS

A. Class 1A (FHWA) Geotextile product data sheet.

B. 60 Mil HDPE Geomembrane product data sheet and installation instructions, including seam welding.

C. Underdrain material specifications (aggregate and pipe)

PART 2 – PRODUCTS

2.1 GEOTEXTILE

A. Geotextile should be a non-woven, heavyweight, subgrade filtration type that is recommended by the manufacturer for use with landfill type applications. FHWA Class 1A requirements are as follows (from FHWA FP-14 Specifications):

12 SECTION 06 – COAL WASTE REPOSITORY CONSTRUCTION

2.2 GEOMEMBRANE

A. Geomembrane shall be 60 mil HDPE with welded seams that is recommended by the manufacturer for use in landfill type applications.

2.3 DRAINAGE AGGREGATE

A. Drainage aggregate shall be ½” minus, clean drain rock.

2.4 UNDERDRAIN SYSTEM

A. The underdrain system shall consist of perforated collector pipes placed 30’ on-center that feed to a solid drain pipe that daylights downslope of the repository. All drainage pipes shall be 4” diameter.

3.1 GENERAL

A. The repository shall be constructed as shown on the DRAWINGS and modified as required by field conditions.

B. Topsoil shall be stockpiled and placed back on the finished surface.

13 SECTION 06 – COAL WASTE REPOSITORY CONSTRUCTION

C. The repository subgrade shall be smooth, compact, and free of protrusions greater than 2”.

Proof rolling of the subgrade may be required. The subgrade shall be approved by the Contracting Officer prior to placement of the drainage layer.

D. The drainage layer shall be a minimum of 6” in depth and outlet pipe shall daylight downslope of the repository.

E. The coal waste shall be placed in 12” compacted lifts. Compaction may be accomplished with a roller or by tracking excavation equipment until no further consolidation is visible.

F. The top liner and optional bottom liner shall have Type 1A geotextile placed on the top and bottom (rub sheets).

G. Following placement of coal waste, liners, and cushion material, a minimum of 12” topsoil shall be placed, as shown on the DRAWINGS.

H. Seed, lime, fertilizer, and mulch shall be applied to the finished ground and all disturbed areas.

A. Payment for COAL WASTE REPOSITORY CONSTRUCTION and all associated activities shall be by the cubic yard, as measured in the hauling vehicle, and is included in Pay Item 05 as a

CONTRACT QUANTITY.

B. Payment for the optional bottom liner geomembrane is included in Pay Item 06 as an ACTUAL QUANTITY, and measured by the Square Yard.

C. Payment for the optional bottom liner geotextile C is included in Pay Item 07 as an ACTUAL QUANTITY, and measured by the Square Yard.

END OF SECTION 06

14 SECTION 07 – SEEDING

SECTION 07 - SEEDING

1.1 SUMMARY

A. Section Includes:

1. Application of seed, lime, fertilizer, and mulch.

B. Related Requirements:

1. Section 05 – COAL WASTE EXCAVATION.

2. Section 06 – COAL WASTE REPOSITORY CONSTRUCTION.

1.2 SUBMITTALS

A. Submit product data for seed, lime, fertilizer, and mulch.

1.3 DELIVERY, STORAGE, AND HANDLING

A. Weather Limitations: Proceed with planting only when existing and forecasted weather conditions permit planting to be performed when beneficial and optimum results may be obtained. Apply products during favorable weather conditions according to manufacturer's written instructions.

PART 2 - PRODUCTS

2.1 GRASS SEED, Apply

A. 60 LB/ACRE Winter Wheat

B. 8 LB/ACRE Annual Rye

2.2 LIME

A. Apply 2 Tons/ACRE pelletized or powdered lime

2.3 Fertilizer

A. Apply 50 LB/ACRE of a starter fertilizer, high in Phosphorus

2.4 Mulch - Apply mulch at the following rates:

A. Wood/Cellulose fiber or recycled paper (hydro mulch) – 2,000 LB/ACRE.

15 SECTION 07 – SEEDING

B. Straw – 4,000 LB/ACRE

3.1 GENERAL

A. All surfaces shall be graded to provide an even surface, without dips, undulations, or pockets providing for an adequate surface for placing soil or the seed bed preparation.

B. Furnish a smooth surface for the seed or topsoil by tracking with a dozer or by other methods. If the site is inaccessible to a dozer and other methods do not provide results equivalent to hand raking, hand rake these areas.

C. Rake or open the surface with dozer cleats or otherwise loosen the surface of these areas to a depth of 1 inch (25 mm) immediately before beginning seeding operations.

D. All newly regraded surfaces will blend into the existing surfaces to create a smooth transition.

E. Apply commercial fertilizer, lime, or other soil amendments including topsoil application in separate operations.

F. Alternate seeding and mulching methods (such as erosion control blankets) may be used as agreed upon with the Contracting Officer.

Payment for SEEDING and all associated activities shall be by the ACRE, and is included in Pay Item 08 as a CONTRACT QUANTITY.

END OF SECTION 07