A06_Specifications_Sluice_Gulch_Road_Improvements.pdf

Sluice Gulch Road Improvements

SPECIFICATION INDEX

General Information and Requirements ... ............................................................................ Section MT-01009

Government-Furnished Property .......................................................................................... Section MT-01019

Watering ............................................................................................................................... Section MT-02201

Site Grading .......................................................................................................................... Section MT-02213

Crushed Aggregate Base Course .......................................................................................... Section MT-02233

Riprap ................................................................................................................................... Section MT-02378

Miscellaneous Project Site Items .......................................................................................... Section MT-02878

SECTION MT-01009

GENERAL INFORMATION AND REQUIREMENTS

MT-01009-1

PART 1: GENERAL

1.01 SUMMARY:

A. Description of Work: Furnishing labor, equipment, supplies, and materials to develop a gravel source in improve the road conditions and drainage features of Sluice Gulch Road. Work to include but not limited to:

fording of heavy equipment, development of gravel source, material segregation, installing a corrugated metal pipe, and constructing an improved road bed with a low water crossing from excavated materials, as well as any related work or other appurtenances in accordance with the drawings and specifications.

B. Location: Work under this Contract is located in Granite County, Montana. Work location shown on the drawing.

1.02 REFERENCES:

A. Referenced Specifications/Standards with Abbreviations and/or Acronyms: Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor from the following:

AASHTO American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 225 Washington, DC 20001

AISC American Institute of Steel Construction 400 North Michigan Avenue Chicago, IL 60611

ANSI American National Standards Institute 1430 Broadway New York, NY 10018

ASTM American Society for Testing and Materials 1916 Race Street Philadelphia, PA 19103

AWS American Welding Society, Inc.

P.O. Box 351040 Miami, FL 33135

CRSI Concrete Reinforcing Steel Institute 933 North Plum Grove Road Schamberg, IL 60173-4758

FP Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects Superintendent of Documents Government Printing Office Washington, DC 20402

MT-01009-2

Fed. Spec. Federal Specification/Standard

General Services Administration Specifications Branch Room 6039, GSA Building Seventh and D Streets, S.W.

Washington, DC 20407

MDT Standard Specifications for Road and Bridge Construction, 1995 Edition Montana Department of Transportation Contract Plans Section 2701 Prospect Avenue Helena, MT, 59620

MUTCD Manual on Uniform Traffic Control Devices for Streets and Highways Superintendent of Documents Government Printing Office Washington, DC 20402

OSHA Occupational Safety and Health Administration's Standards U.S. Department of Labor Occupational Safety and Health Administration Denver Area Office 333 West Colfax Avenue Denver, CO 80204

WWPA West Coast Lumber Inspection Bureau 1500 Yeon Building Portland, OR 97204

*Federal Specifications and catalogs may be obtained at Business Service Centers of Regional Offices of the General Services Administration. (Washington, DC; Boston, MA; New York, NY; Philadelphia, PA; Atlanta, GA;

Chicago, IL; Kansas City, MO; Fort Worth, TX; Denver, CO; San Francisco, CA; and Auburn, WA.)

1.03 DEFINITIONS:

A. Approvals: Approval of the submittal is an indication that the Contractor's submittal has been reviewed and that there are no objections, except as noted. Approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Government’s attention in writing. After approval of an item, the Contractor may submit a substitute for approval if approved item cannot be obtained.

1.04 SUBMITTAL:

A. Scope: Submittals include but are not limited to the following: design computations, shop drawings, manufacturer’s literature, as-built drawings, samples, and maintenance manuals.

B. Requirements: Refer to specifications for required submittals. Allow at least five working days for review.

All Submittals shall be delivered to the Government prior to any work beginning.

C. Identification of Submittal: Two copies of each submittal shall be presented to the Government for approval.

Completely identify each submittal by showing at least the following information:

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1. Name and address of submitter, as well as name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

3. Contract number, drawing number, and specification section number to which the submittal applies.

4. Whether this is an original submittal or re-submittal.

5. Each item shall clearly note the manufacturer's name and address, trade name, product, lot, style, color, catalog designation or model number, and locations of use.

1.05 CERTIFICATES OF CONFORMANCE:

A. Requirements: Government may permit use, prior to sampling and testing of materials, when accompanied by

Certificates of Conformance. Materials used on the basis of a Certificate of Conformance may be sampled and tested. Installation of materials on the basis of Certificates of Conformance shall not relieve the Contractor of responsibility for incorporating materials conforming to the requirements of the drawings and specifications.

Material not conforming to those requirements will be subject to rejection, whether in place or not.

B. Format: The form of the Certificate of Conformance provided by the supplier shall be as follows:

a. Two copies of the Certificate of Conformance shall be submitted for approval.

b. The certificate shall state that the named product conforms to the contract requirements.

c. The certificate shall either be accompanied with a certified copy of the test results or certify that such test results are on file with the manufacturer and will be furnished to the Government upon request.

d. The certificate shall provide the name and address of the manufacturer, the testing agency, and the date of tests.

e. The certificate shall set forth the means of identification permitting field determination of the product delivered as being the product covered by the certification.

1.06 QUALITY ASSURANCE:

A. Codes and Standards: All work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

C. Measurements: Where approved, manufacturer's diagrams and shop drawings shall give specific measurements or rough-in dimensions for equipment. These dimensions shall take precedence over dimensions indicated on the drawings.

1.07 DELIVERY, STORAGE, AND HANDLING:

A. Delivery: Contractor shall protect products incorporated into the work from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturer's name and brand

MT-01009-4

designation and contents legibly indicated. The containers shall bear the referenced specification number, type, and class as applicable.

B. Storage: Contractor shall provide temporary storage facilities for products complying with manufacturer's recommendations, which will protect them from damage until installation on the project and final acceptance.

The storage area shall permit access for inspection and handling.

C. Handling: Contractor shall load and unload products in such a manner that protects them from damage until installation on the project.

1.08 PROJECT/SITE CONDITIONS:

A. Access to the Work: The work site is accessed by state, county and federal roads. Contractor shall furnish all construction signage identified in Section MT-01500 Temporary Facilities and Controls of the specifications, as well as any additional signage required by local, state, or federal authorities with jurisdiction. The day-use site will be temporarily closed for a portion of the contract. It is the Contractor’s responsibility to provide adequate barriers and signage to communicate the site closure to the public. See Section MT-01500 Temporary Facilities and Controls for further guidance.

B. Construction Stipulations:

1. The area under construction shall be closed to the public during the construction process. Contractor shall be responsible for all closures which shall be communicated to the public through the use of construction signage.

2. Period of Performance: All equipment fording and low water crossing construction shall take place between the dates 7/1 and 8/31 to avoid impacts to cutthroat trout. All project tasks that won’t impact stream conditions (submittals, equipment staging, etc.) may take place outside of this timeframe at the discretion of the BLM.

C. Environmental Considerations: The aesthetic value of the site and surrounding area are of prime importance.

Contractor shall take all care necessary to preserve all plant life and other natural features. No surface damage outside the staked area shall occur. Any surface damage outside the staked area shall be corrected at the expense of the Contractor. Any damage to existing state, county or local roads used to transport materials to the project, shall also be corrected at the expense of the Contractor.

D. Construction Facilities:

1. Do not park vehicles or equipment or store materials on private property without written permission from the property owner.

2. Contractor shall contact the Montana one-call system for utility locations prior to starting work. All utility locations shall include public and private utilities at the construction site. The number for the Montana one-call system is 1-800-424-5555.

E. Repair of Underground and Overhead Utilities: Contractor is responsible for any damage to underground and overhead utilities such as, but not limited to: water, electrical, communication, sewer, fiber optic and main power lines. All damage to underground or overhead utilities will be the full responsibility of the Contractor and shall be repaired at the Contractor’s expense.

1.09 SEQUENCING AND SCHEDULING:

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A. Work Schedule: A detailed work schedule shall be submitted by the Contractor at the pre-work conference.

Contractor shall not perform any work at the project site until the Contractor’s work schedule is received by the Government. When requested, the Contractor shall submit an updated work schedule within 3 calendar days.

PART 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

3.01 PROJECT MEETINGS:

A. Pre-Work Conference:

1. Notification: A pre-work conference will be held prior to the start of work. The Contractor will be notified in advance of the meeting time, date, and place. The purpose of the meeting will be to review required work, project drawings and specifications, construction schedules, payroll and payments, and administrative provisions of the Contract.

2. Attendance: Contractor, subcontractors, and the persons responsible for coordination of the work shall be present at the meeting.

3. Presentation: Contractor shall be prepared to summarize and explain procedures planned for the project.

Contractor shall also present all submittals and construction schedules requested in the specifications.

B. Progress Meetings:

1. Location: Meetings shall be held at the project site or as determined by the Government.

2. Notification: Meetings may be called by either the Government or the Contractor. The request shall state who should attend.

C. Final Inspection:

1. Location: Meeting shall be held at the project site, or as determined by the Government.

2. Notification: Contractor shall notify the Government, in writing, at least five working days prior to the completion date so the Government can schedule final inspection.

3. Attendance: Contractor shall require the superintendent to be present during this inspection.

3.02 CLEANUP:

A. Waste Removal: Contractor shall keep the premises free from accumulation of waste materials or rubbish resulting from the construction process. This includes any waste produced from employees at the construction site. At the completion of the work, it is the Contractor’s responsibility to remove any remaining waste materials from the work site. If waste materials are not promptly removed from the site, the Government may remove the waste and charge the cost of removal to the Contractor.

PART 4: MEASUREMENT AND PAYMENT

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4.01 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for payment.

4.02 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

SECTION 01019

GOVERNMENT-FURNISHED PROPERTY

01019-1

1.01 SUMMARY:

A. Section Includes: Materials to be furnished by the Government and their locations.

1.02 DELIVERY, STORAGE, AND HANDLING:

A. Location: The Government-furnished property will be provided by the Bureau of Land Management located at the project site.

B. Loading/Offloading/Transporting Property:

1. A rock screen for separating aggregate material under 3” may be supplied by the government at the request of the contractor. A tentative schedule for delivery of screen will be given to Contractor at the Pre-work meeting. The Contractor shall give the Government 15 days notice when he/she would like the screen to be delivered in the event that the Government’s tentative schedule needs to be adjusted

2.01 MATERIALS:

A. Materials to be Furnished by the Government:

1. Rock Screen

A. The rock screen would be delivered to the site by the government, but shall be transported by the contractor across the river ford.

A. Units: The work described in this section will not be measured for payment.

4.02 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section will be made. The Contractor shall include consideration for this item in the bid price for other items of the Contract.

SECTION MT-02201

WATERING

MT-02201-1

A. Section Includes: Distributing and applying water required for compaction of the roadway as outlined in these specifications .

1.02 PROJECT/SITE CONDITIONS:

A. Water Source: Contractor shall be responsible for obtaining the water source. Project site is adjacent to Rock

Creek. Contractor shall obtain and bear all costs for any permits required to draw water from the river or any other water source as required by state law.

A. Water: Shall be clean and free from deleterious materials.

2.02 EQUIPMENT:

A. Requirements: Provide necessary pumping equipment and water trucks with regard to the bridge limitations at the site. Spray shall be of adequate capacity and designed to ensure uniform application of water in the amounts designated.

3.01 APPLICATION:

A. Requirements: Water shall be applied in such a manner to ensure uniform moisture content.

B. Compaction: The amount of water added or applied shall be sufficient to obtain a relative compaction.

C. Dust Control: Water dry material to prevent dust.

PART 4: MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for payment.

4.02 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section will be made. The Contractor shall include consideration for this item in the bid price for other scheduled items of the contract.

SECTION MT-02213

SITE GRADING

MT-02213-1

1.01 SUMMARY:

A. Section Includes: All earthwork required to complete the subgrade sections of the project, including clearing and grubbing, excavation, embankment, grading, compacting, and all miscellaneous landscaping related work to prepare the site as indicated and as shown on the drawings.

1.02 REFERENCES:

A. American Association of State Highway and Transportation Officials

AASHTO T 99-86 Moisture-Density Relations of Soils Using a 5.5-lb (2.5 kg) Rammer and a 12-inch

(305 mm) Drop

AASHTO T 239-86 Moisture Content of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow

Depth)

1.03 DEFINITIONS:

A. Excavation: All excavation materials shall be considered as unclassified excavation, regardless of its nature.

B. Embankment: Shall be mineral soil, free from peat, frozen material, brush, trees, roots over 2 inches in diameter and rocks over 6 inches in greatest diameter. All embankment material shall be obtained from on-site during excavation. Embankment is that material placed beneath roads and other areas on the site.

C. Waste Excavation: Excavation that is not used for construction of embankments shall be wasted in designated area, as directed by the Government and shown on the drawings.

1.04 QUALITY ASSURANCE:

A. Failure Criteria: Not limited to the following:

1. Formation of pools of moisture where positive drainage is indicated on the drawings and in waste embankment areas.

2. Settlement of embankment.

3. Flow of moisture toward, or entrapment against, building foundations.

1.05 PROJECT/SITE CONDITIONS:

A. Excess Material:

1. Excavated material unsuitable for building up embankment sections of the subgrade surface shall be wasted at the designated waste areas.

2. Usable excess material excavated shall be used in the subgrade embankment construction before the use of imported borrow is allowed. Borrow wasting is not permitted.

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3. All oversized rocks removed below subgrade elevations shall be brought back to the original subgrade elevation using excavated material before the use of imported borrow is allowed. Borrow wasting is not permitted.

4. Rocks and boulders greater than 2 feet in diameter shall be separated and set aside at the direction of the

Government in the field. Rocks shall be individually placed by Contractor in designated locations to create access barriers. All rock removal is considered incidental to site grading.

B. Elevations: Verify the grade elevations existing on the site. Notify the Government immediately if adjustments are required to provide finish elevations indicated. Site drainage shall be considered of prime importance.

C. Environmental Conditions: Do not attempt to grade saturated material. Water dry material to prevent dust.

A. General: See definitions.

3.01 CLEARING AND GRUBBING:

A. Requirements: The area to be excavated, and the surface area to be covered by embankments, shall be thoroughly cleared and stripped of objectionable vegetative matter, brush, trees, stumps, roots, and rocks and shall be wasted in areas at the project site, as directed by the Government and as shown on the drawings.

3.02 SCARIFYING:

A. Requirements: Sod and vegetation shall be removed from the surface upon which the fill shall be placed. The cleared surface shall be completely broken up by scarifying to a minimum depth of 6 inches. Scarifying furrows shall be a maximum of 3 feet apart and shall be parallel to the center line of the fill. No embankment materials shall be placed until the surface upon which the embankment material shall be placed has been approved.

3.03 PREWATERING:

A. Requirements: Excavation areas may be prewatered before excavating the material. The area to be excavated shall be moistened to the full depth from the surface to the bottom of the excavation. The application of water shall be controlled so that the excavated material will be near the optimum moisture content as specified in paragraph 3.06 A of this specification. When necessary, prewatering shall be supplemented to assure that embankment material and backfill material moisture content comply with paragraph 3.06 A of this specification. Obtain water for prewatering in accordance with Section MT-02201 - Watering.

3.04 INSTALLATION:

A. Excavation: Excavated material shall be used to bring the roadway, parking lots, campground loops and other areas to the required subgrade elevations where shown on the drawings or as staked in the field. Contractor shall obtain sands and gravels from the excavated material and mix to obtain the best possible embankment for which the fill is intended.

MT-02213-3

B. Grades: Grades not otherwise indicated shall be level, or maintain uniform slopes between points where elevations are given, or between such points and existing finished grades. Any abrupt change in slopes shall be rounded and blended with adjacent topography.

C. Earthfill Placement: Embankment materials used to construct the roadway and parking lots, or any other fill areas shall be spread over the full width of the cross section of the embankment to a maximum loose thickness of 6 inches, and shall be compacted as specified in paragraph 3.06 A and B before the next layer is spread.

Contractor shall use compaction equipment suitable to the type and depth of material being compacted to obtain the required degree of compaction. The in-place materials shall be free of lenses, pockets, streaks, or layers of materials that differ substantially in texture or gradation from the surrounding materials.

D. Disposal of Materials: Excess excavation shall be disposed of at the project site in the designated waste areas as shown on the drawings. Waste material shall be shaped and blended in with the surrounding terrain and shall not exceed 4:1 slopes unless otherwise specified by the Government in the field.

E. Use of Borrow Material: Do not use imported borrow material until after the materials obtained from the required excavation have been placed in the fill, or unless otherwise directed by the Government.

3.05 FINISHING:

A. Subgrade shall be finished with equipment capable of shaping and grading the finished surface within the tolerance specified below.

1. Subgrade surface will be checked for the required grades staked in the field by the Government with a tolerance of ± 5 hundredths of a foot.

3.06 FIELD QUALITY CONTROL:

A. Moisture Content: During watering and compacting of the embankment subgrade, the optimum moisture content (-4 percent to +2 percent), as determined in the field by contractor and BLM engineer shall be maintained by wetting or drying.

1. The waste area shall be watered to control dust. Compaction of the waste area shall be limited to wheel rolling from the equipment used for placing and shaping the waste material.

B. Field Density Testing:

1. At the direction of the Government, the Contractor may be directed to provide necessary equipment and labor to excavate and replace materials for test holes up to 5 feet deep into the compacted backfill to allow testing below any site grading surface.

A. Units: The site grading described in this section, including all clearing and grubbing, excavation, embankment, grading, general earthwork, watering, compacting, and all miscellaneous landscaping will be measured and paid for on a lump sum basis.

B. Units: All compaction work described in this section will be not measured separately for payment.

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C. Units: Aggregate base course material will be paid separately from site grading work under Section MT - 02233 Aggregate Base Materials.

4.02 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

Pay Item Pay Unit

MT - 02213 (1) Site Grading ................................................................................................ Lump Sum

SECTION MT-02233

AGGREGATE BASE COURSE

MT-02233-1

PART 1: GENERAL

1.01 SUMMARY:

A. Section Includes: This work includes furnishing, placing, and compacting aggregate base course materials on prepared subgrades in accordance with these specifications and to the lines, grades, and thickness as shown on the drawings or as staked in the field.

1.02 REFERENCES

A. American Association of State Highway and Transportation Officials:

AASHTO T 99-86 Moisture-Density Relationship of Soils Using a 5.5-lb

(2.5 kg) Rammer and a 12-inch (305 mm) Drop.

AASHTO T 239-86 Moisture Content of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).

2.01 MATERIALS: Shall be in conformance with the following requirements:

A. General: Aggregate material shall consist of hard, durable particles or fragments of slag, stone, or gravel from locally developed source of the required size and grading. Material shall be visually free from organic matter and lumps or balls of clay and shall meet the requirements for the grading given.

B. 3 Inch Minus Aggregate Base: Shall meet the following gradation and requirements including any added binder or blending material:

Sieve Size Percent Passing 3 inch 100 percent

3.01 PREPARATION:

A. The subgrade shall be prepared in accordance with Section MT-02213 - Site Grading.

3.02 INSTALLATION:

A. All aggregate base course materials shall have water added as required in Section 02201 - Watering. The aggregate shall then be mixed and processed to produce a uniform blend of material before final placement.

After processing, the material shall be placed on the prepared subgrade in a minimum uniform thickness of 12” inches in compacted depth. The method of dumping and spreading shall be determined by the Contractor.

The spread material shall be free of segregation.

3.03 COMPACTION:

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A. Each layer of aggregate base shall be compacted to the full width by means of compaction equipment suitable to the type and depth of material being compacted. Compaction of each layer shall continue until material displacement has seized and compaction effort has been approved by the government.

3.04 FINISHING:

A. Finish grade of each aggregate base course material shall be finished with equipment capable of shaping and grading the finished surface within the tolerance specified below.

1. The surface will be checked for the required grades specified on the drawings by the Government with tolerances of ± 5-hundredths of a foot.

PART 4: MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT:

A. Units: All work described in this section regarding installing aggregate base course material will be paid under the pay item MT – 02233 Aggregate Base Course.

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under the following:

MT – 02233(1) Aggregate Base Course ............................................................................... Cubic Yard

SECTION MT-02378

RIPRAP MATERIALS

MT-02378-1

1.01 SUMMARY:

A. Section Includes: Furnishing labor, equipment, supplies, and materials to install riprap along a 1.5:1 constructed bank in accordance with the drawings and specifications and as directed by the Government in field.

1.02 PROJECT/SITE CONDITIONS:

A. Construction Stipulations:

1. Contractor shall discuss their intended method for constructing bank and installing riprap with the Contracting Officer Representative in writing at the Pre-work Conference.

2. When required, all terms, conditions and limitations of the U.S. Army Corps of Engineers 404 permit must be adhered to. A copy of the permit shall be given to the contractor at the Pre-work conference.

3. When required, all terms, conditions and limitations of the Montana Department Fish Wildlife and Parks

124 permit must be adhered to. A copy of the permit shall be given to contractor at the Pre-work conference.

B. Material Staging Areas:

1. The approved staging area for all materials on site shall be the designated by the BLM on site.

1.03 SUBMITTALS:

A. No submittals will be required for this section.

2.01 CONTRACTOR-FURNISHED MATERIALS:

A. Random Riprap Lining: Shall meet sizing requirements of Class I or II riprap as stated in the Department of

Transportation Section 701.06.02 Random Riprap. The stone will be accepted by the Contracting Officer Representative based on visual analysis.

1. Furnish stone that is hard, durable, angular in shape, resistance to weathering and water action, free from overburden, spoil, shale, structural defects, and organic matter.

2. Each stone must have its greatest dimension not greater than 3 times its least dimension.

3. If possible, do not use rounded stone or boulders from stream bed source as riprap. Do not use shale or stone with shale seams.

Riprap Sizing:

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3.01 INSTALLATION:

A. Backfill:

1. Riprap Lining: Construct and place riprap backfill as shown on the drawings.

PART 4: MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT:

A. Units: The work described in this section for Class II Riprap will be measured and paid for by the cubic yard placed. Determination of quantities shall be based off final installed cubic yards.

4.02 BASIS OF PAYMENT:

A. Payment: The accepted quantities will be paid for at the contract price per unit of measurement, respectively, for the pay item shown in the Bid Schedule. Price and payment shall be full compensation for furnishing and placing all materials, including all labor, equipment, tools, and incidentals necessary to complete the work described in this section. Payment will be made under:

MT - 02278 (1) Riprap ......................................................................................................... Cubic Yard

SECTION MT-02878

MISCELLANEOUS PROJECT SITE ITEMS

MT-02878-1

A. Section Includes: Furnishing all equipment, materials, and labor for mineral development and low water crossing development.

1.02 PROJECT/SITE CONDITIONS:

(There are no applicable requirements).

1.03 SUBMITTALS:

A. Requirements: Contractor shall submit the Manufacturer's Certificate of Compliance for all Contractor-supplied materials. Submittals shall be in accordance with Section MT-01009 - General Information and Requirements.

2.01 GOVERNMENT-FURNISHED MATERIALS:

A. Rock Screen: Government will provide a rock screen for material generation if the contractor does not have one of their own. Contractor will be responsible for moving the screen to the generation area and fording the creek with their equipment.

B. Concrete Planks: Government will provide all concrete planks for construction of low water crossing

C. 36” CMP: Squash culvert provided by the government and installed by the contractor.

D. Cattleguard: Government will provide cattleguard materials for replacing the existing cattleguard as shown in plans.

2.02 CONTRACTOR-FURNISHED MATERIALS:

A. 6” geocell:

1. Design Basis – Rutguard load support and erosion control geocell (or approved equal).

a. Height: 6”

b. Tensile Strength: 1800 lbs min

c. Material:

i. UV stabilized

ii. 100% recyclable materials

iii. Manufactured in USA

d. Anchoring:

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i. Embed per manufacturer’s specifications below 6” lift of aggregate and concrete planks as shown in plans.

3.01 PREPARATION AND INSTALLATION:

A. Mineral Development and Material Screening:

1. Mineral Development to be executed per the CERCLA regulations. Mineral material site development and reclamation would include:

• Topsoil within the area of disturbance, (including any access routes, stockpile areas, and screening/loading sites,) will be excavated and temporarily stockpiled on site.

• Mineral material will be excavated by heavy equipment. Excavated material will be screened/classified (by grain/particle size) and stockpiled on site for suitability as road base, possible graben fill, or road surfacing.

• The screened material will be hauled over the existing Sluice Gulch Road to the hydrologic overflow structure construction area.

• Reclamation:

o Excavated mineral material that is not used in the construction of the hydrologic overflow structure due to suitability or excess will be used as backfill of the mineral material site. Highwalls and backfill will be recontoured to match the surrounding landscape. Reclaimed slope gradient will not exceed a steepness of 3:1 (ratio of horizontal distance to vertical distance).

o In areas where organic materials and topsoil have been displaced from surface disturbing activities, any stockpiled topsoil will be evenly replaced. Large rock may be used to stabilize, harden, or limit vehicle access on/around the reclaimed site.

o The replaced topsoil will be seeded using a native seed mix, provided by the BLM.

Where feasible, organic matter (duff) will be collected in buckets by hand to distribute across the soil surface.

o If necessary, erosion control measures (such as silt fence or straw wattle) will be installed to prevent erosion due to surface water runoff prior to the reestablishment of desirable vegetation.

o The area of disturbance at the mineral material site will be temporarily fenced until the reestablishment of desirable vegetation (up to three years).

o Monitor, and as needed, treat the disturbance area for invasive and noxious plant species under BLM’s Abandoned Mine Lands program.

B. 6” geocell: Install per manufacturer’s specifications and as directed in the field by the BLM. Embed per manufacturer’s specifications below 6” lift of aggregate and concrete planks as shown in plans. Elevations to be within +/- .05 ft.

C. Concrete Planks: Install concrete planks over 6” geocell to the elevations and location as shown in plans.

Connect with hardware provided by the BLM. Finish elevations to be within +/- .05 ft of design elevations.

D. 36” CMP: Install government provided CMP as directed in the field. Position the pipe with a longitudinal joint so the joint is opposite the invert. Fully join pipe sections with leak-resistant seals.

1. Remove and dispose of existing 18” culvert off-site at the expense of the contractor.

MT-02878-3

E. Cattleguard: Contractor shall remove the existing cattleguard and salvage the materials in a location specified by the BLM. Contractor to provide equipment and labor to install cattleguard provided by the BLM.

Cattleguard will be delivered to the site by the government.

1. Installation: Install cattleguard to match finish grades of adjacent roadway. Clear all debris within 10’ of bases prior to installation.

A. Units: All work pertaining to miscellaneous items furnishment and installation described in this section will be measured and paid for on an individual pay item basis as stated below.

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

02878 (1) Mineral Development and Material Screening ……………………………....…....…....…....…Lump Sum 02878 (2) 18” CMP Culvert Removal and Disposal… ………………………………....…....…....…….… . . . . Each 02878 (3) 36” CMP Culvert Installation……………… ……………………………....…....…....…..…….Linear Feet 02878 (4) 6” Geocell Installation…………. . . . . . . … ………………….…………....…....…....…..…….Square Feet 02878 (5) Concrete Plank Installation…………… . . . . ……………………………....…....…....…..……Linear Feet 02878 (6) Cattleguard Replacement…………………… ……………………………....…....…....…..…….Lump Sum