31_40_00_Amendment_0003.pdf

Boardman Dam Removal and River Restoration

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 40 00

SLOPE PROTECTION AND EROSION CONTROL

PART 1 GENERAL

1.1 SECTION INCLUDES

1.2 RELATED SECTIONS

1.3 SUBMITTALS

1.4 REFERENCES

1.5 PROJECT REQUIREMENTS

PART 2 PRODUCTS

2.1 MATERIALS

PART 3 EXECUTION

3.1 TEMPORARY CONTROLS

3.2 PERMANENT CONTROLS

3.2.1 STORM WATER DISCHARGE INSPECTIONS

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SECTION 31 40 00 Page 1

SECTION 31 40 00

SLOPE PROTECTION AND EROSION CONTROL

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Installation and maintenance of temporary erosion controls.

B. Prevent siltation of water courses, sewers, streams and/or lakes.

C. Confinement of fuels, oils, bituminous materials, chemicals and other harmful materials.

D. Prevention of dust and airborne materials.

1.2 RELATED SECTIONS

A. Section 01 33 00 - Submittal Procedures

B. Section 31 90 00 - Planting

C. Section 31 23 00 - Earthwork

1.3 SUBMITTALS

SD-01 Preconstruction Submittals

A. Permits, Certificates, and Inspection Logs

1. Grading permit from local governing authority.

2. Storm water discharge permit as required from local governing authority.

3. Copy of "Notice of Coverage."

4. Grading permit from local governing authority for off-site borrow areas.

5. Permit for disposal of excess materials and/or debris.

6. Soil erosion control inspection logs.

B. Erosion Control Program

1. A schedule of soil erosion control activities.

SD-02 Shop Drawings

C. Shop Drawings; G-DR

1.4 REFERENCES

A. The following reference, may not be a comprehensive or complete list, are part of this specification to the extent referenced:

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ASTM INTERNATIONAL (ASTM)

ASTM D4833 Standard Test Method for Index Puncture Resistance of Geomembranes and Related Products

ASTM D4632 Standard Test Method for Grab Breaking Load and Elongation of Geotextiles

ASTM D5261 Standard Test Method for Measuring Mass per Unit Area of Geotextiles

ASTM D4632 Standard Test Method for Grab Breaking Load and Elongation of Geotextiles

ASTM D4533 Standard Test Method for Trapezoid Tearing Strength of Geotextiles

ASTM D4355 Standard Test Method for Deterioration of Geotextiles by Exposure to Light, Moisture and Heat in a Xenon Arc Type Apparatus

ASTM D4751 Standard Test Method for Determining Apparent Opening Size of a Geotextile

ASTM D4491 Standard Test Methods for Water Permeability of Geotextiles by Permittivity

State of Michigan

Act 451 Part 31, Water Resources Protection of the Natural Resources and Environmental Protection Act, 1994

Act 451 Part 91, Soil Erosion and Sedimentation Control

National Pollutant Discharge Elimination System (NPDES)

NPDES Regulations

B. The Contractor shall be responsible for identifying and complying with any additional references as applicable.

1.5 PROJECT REQUIREMENTS

A. All applicable state and local statutes, relating to the prevention and abatement of pollution, shall be complied with during the performance of the contract.

B. All applicable permits and requirements thereof shall be complied with.

C. No separate measurement or payment will be made for work covered by this section. All payment, therefore, shall be included in the contract price.

D. Construction operations shall be conducted in such manner as to provide permanent and temporary erosion controls and to prevent damaging

SECTION 31 40 00 Page 3 siltation of watercourses, streams or lakes.

E. The Contractor shall conduct his work in a manner such that all soil, fuels, oils, bituminous materials, chemicals, sanitary sewage, and other harmful materials, resulting from the construction of the project are confined within project limits, properly disposed of, and prevented from entering watercourses, rivers, lakes, or entering onto or causing damage to adjoining or other properties.

F. A schedule of soil erosion activities shall be submitted prior to any earth-change activity.

1. This Schedule shall be updated as necessary to update changed activities.

2. If a schedule is not provided, then the Contractor shall install the temporary erosion control measures immediately after completing any earth change activity.

G. Should any requirement for protecting against soil erosion and sedimentation be neglected or not adequately followed, the Contracting Officer may, upon written notice, require the Contractor to immediately cease construction operations and to apply his entire efforts to meet the omitted requirements before proceeding further with the project.

1. Should the Contractor, upon such written notice, neglect, refuse, or fail to adequately correct matters causing or contributing to uncontrolled erosion or sedimentation, the Contracting Officer may, and without prejudice to any other recourse, on three-days written notice, execute the required work in the most expedient manner he may elect and deduct all related costs from the contract amount.

2. No extension of the completion date will be allowed relating to such defaulted work.

H. During any excavating and grading operations where siltation is likely to be a problem, the Contractor's operation shall be scheduled and performed such that required permanent soil stabilization can follow immediately thereafter if the project conditions permit; otherwise, temporary approved erosion and siltation control measure will be required between successive construction stages.

I. The Contractor shall control dust from his operation, in a manner approved by the local enforcing agency. The Contractor shall use the appropriate measures to control dust 24 hours a day 7 days a week before it becomes a nuisance to public, neighboring properties, and site workers and visitors. Dust control shall be implemented throughout the duration of the project

J. The Contractor shall be responsible for disposing of excess excavation in a lawful manner.

1. Before any spoil material is taken from the site, the Contractor shall identify, in writing, the proposed spoil areas.

2. Where such area is other than property owned by the Contractor or a licensed landfill operation, the Contractor shall also submit, with such identification, a written certification from the local enforcing agency that the proposed disposition of such material will not result in violation of applicable local ordinances or state laws.

3. Any cost of such certification and/or related erosion or sedimentation control measures shall be the responsibility of the Contractor.

K. If borrow areas are required on this project, the Contractor shall be responsible for securing necessary borrow or fill materials.

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1. Before any borrow or fill is placed on the site, the Contractor shall identify, in writing, the source of all borrow or fill to be used on the project.

2. Where such material is not taken from property owned by the Contractor or a commercial operation, the Contractor shall also submit, with such identification, a written certification from the local enforcing agency that removal of such material will not result in violation of applicable local ordinances or state laws.

3. Any cost of such certification and/or related erosion or sedimentation control measure shall be the responsibility of the Contractor.

PART 2 PRODUCTS

2.1 MATERIALS

A. Seed

1. Temporary seed shall be composed of a mixture blended in accordance with Section 32 90 00.

2. Permanent seed shall conform to the requirements of Section 32 90 00.

B. Stone

1. Clean natural stone graded within the following limits:

Sieve Size % Passing 1-1/2" 100 1" 95-100 3/4" 75-100 3/8" 15-80 No. 4 0-15 No. 8 0-10 No. 200 0

1. Rip-Rap shall meet the requirements of MDOT Standard Specifications for Construction Section 916, with the exception precast concrete blocks may not be used.

E. Geotextile (Silt Fence)

1. The geotextile properties shall conform to:

Puncture Resistance ASTM D4833 lbs. 60 Grab Elongation ASTM D4632 % 15 Weight ASTM D5261 oz./yd2 3.2 Grab Strength ASTM D4632-86 lbs. 100 Trapezoidal Tear ASTM D4533-85 lbs. 50 UV Stability ASTM D4355 % 90

Xenon Arc = 500 hours AOS ASTM D4751-87 US Sieve 30-70 Flow Rate ASTM D4491-85 gpm/s.f. 15

F. Non-Woven Geotextile Fabric

1. Meet AASHTO M288 requirements as modified:

a. A.O.S.: 70-100.

b. Flowrate: 100 gal/min/ft2 minimum.

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C. Peastone

1. MDOT 34R material

D. Rip-Rap

c. Trapezoidal Tear: 65 pounds minimum.

d. Puncture Resistance: 90 pounds minimum.

e. Grab Tensile: 160 pounds minimum.

f. Weight: 6.0 oz./yd2 minimum.

G. Erosion Control Blankets

1. North American Green, or approved equal, meeting the requirements of

Models S 75, S 150, SC-150, or P 300, as required.

H. Inlet Silt Control Bag

1. Silt Sak as manufactured by ACF Environmental, or approved equal.

2. Catch-all as manufactured by Marathon Materials, or approved equal.

3. All sediment control bags shall contain an overflow capability.

PART 3 EXECUTION

3.1 TEMPORARY CONTROLS

A. Prior to, or as the first step in construction, a perimeter defense around the boundaries of this site against erosion and sediment will be initiated.

B. Temporary controls include, but are not limited to, silt fences, Inlet silt control bags in catch basins and manholes, seeding of stockpiled erodible materials and borrow areas, erosion control blankets, placing stone filter material, diversion ditches, rock check dams, and sediment traps.

C. In addition to temporary measures required by the Drawings, the Contractor shall be responsible for providing any additional measures required to properly control erosion and sedimentation as may become necessary or may arise from conditions which may develop during construction as directed by the Contracting Officer.

1. Except for emergencies, proposed additional temporary controls shall be approved by the COR.

D. Where seasonal limitations or construction delays prevent scheduled installation of permanent control facilities, approved temporary measures shall be installed within 15 calendar days and maintained until replaced by the permanent facility.

E. All temporary erosion control facilities shall be removed at the completion of construction, unless approved by the COR to remain in place. Care shall be taken during removal to minimize siltation in any drainage course.

F. Erosive or sediment producing areas, including stockpiled areas, exposed for up to 12 months shall be protected by seeding or as specified in Section 31 40 00.2.1 by seeding in conjunction with other measures.

G. As much as possible, grading work shall be coordinated with work specified in 31 23 00 Earthwork and 31 20 40 Site Restoration to minimize the duration of soil exposure to erosive elements.

H. All mud/dirt tracked onto existing city/county roads from this site, due to construction, shall be promptly removed by the General Contractor.

Inspect daily and if necessary removal of mud/dirt shall be carried out.

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I. All mud/dirt tracked or spilled on paved roads/surfaces within this site shall be promptly removed by the General Contractor. Inspect daily and if necessary removal of mud/dirt shall be carried out..

J. Protection of Inlets and Catch Basins

1. Protection shall be provided for those inlets identified on the

Drawings.

2. Additional protection shall be provided for others if necessary during construction.

3. Low area or parking lot catch basins or curb inlets shall be protected before paving, seeding or sodding by sediment traps, stone inlet filters, silt fence, inlet silt control bag, or by other means as shown on the Drawings or approved by the COR.

4. Approval by responsible officials shall be obtained prior to locating any temporary structures in any public right-of-way.

K. Stone Outlet Filter

1. Outlet filters shall be placed as shown on the Drawings or as necessary in conjunction with temporary measures installed during construction.

2. Material shall be washed peastone or filter stone as specified in Section 31 40 00.2.1. The top of the filter area shall be concave and shall be depressed at least six inches below the top of the adjacent berm.

3. During construction periodic inspection and maintenance shall be provided. Where flow through the filter is such that the material filtering stone washes downstream and cannot be maintained, a screening material shall be installed.

L. Straw Bale Diversion Berm

1. Construction shall be as shown on the Drawings. Berms shall be placed as shown on the Drawings and as required as temporary control measures determined necessary during construction.

2. A minimum of two (2) hold-down stakes shall be used per bale. Wood stakes shall be at least 2" by 2". All stakes shall be sufficient in length to penetrate a minimum of 1' into the ground.

3. A six inch (minimum) ridge of peastone or compacted earth shall be placed along the base of the bale on the side from which flow will come. This area shall be periodically inspected and maintained to prevent piping.

M. Silt Fence

1. Dig a trench for fabric toe-in where the fence is to be installed (6 inches deep by 6 inches wide).

2. Set posts securely in the ground within a few inches of the trench and attach support material to posts. Posts spacing shall be 7'-8".

3. Attach fabric to fence structure allowing six (6) inches to lay in the toe-in trench. Hog nose rings, nails and wire have all been effectively used in attaching fabric to fence.

4. Fill toe-in trench with soil and compact.

5. Preassembled fences may be used in relatively flat areas as an option to steps 2-4, if desired.

N. Erosion Blankets

1. The placement of blankets shall be in accordance with the manufacturer's recommendations and as indicated in the following table:

Slope Blanket 4:1 to 3:1 S 75 3:1 to 2:1 S 150

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2:1 to 1:1 SC-150 Channel Bottoms, Ditch Bottoms P 300

O. Inlet Silt Control Bag

1. Installation and maintenance shall be per manufacturers requirements.

P. All temporary erosion control measures shall be inspected weekly and immediately after rainfall events by the Contractor, and all measures requiring maintenance, repair, or replacement shall be corrected at the Contractor's expense.

1. Written record of such inspections shall be maintained by the

Contractor, with copies being furnished to the Government.

3.2 PERMANENT CONTROLS

A. Permanent soil erosion control measures, plantings, and mulching for all slopes, channels, ditches or any disturbed land area shall be completed within 15 calendar days after final grading or the final earth change has been completed.

1. When it is not possible to permanently stabilize a disturbed area after an earth change has been completed or where significant earth change activity ceases, temporary soil erosion control measures shall be implemented within 15 calendar days.

2. All temporary soil erosion control measures shall be maintained until permanent soil erosion control measures are implemented.

B. All permanent soil erosion control measures will be implemented, maintained, and established before a certificate of compliance is issued.

C. Installation of permanent controls shall include, but is not limited to: finish seeding, asphaltic concrete paving, concrete paving, storm sewers, ditches, ground cover and plantings.

D. Placement of permanent controls shall be as specified in related sections.

3.2.1 STORM WATER DISCHARGE INSPECTIONS

A. Contractor to comply with requirements of Act 451 and The National Pollutant Discharge Elimination System (NPDES) Storm Water Regulations including, but not limited to, observations and written records.

1. Contractor shall file a "Notice of Coverage" for the Owner under the

Michigan Permit by Rule.

2. Contractor shall comply with all requirements of the Permit by Rule during performance of the Work.

B. At completion of construction activities, submit inspection log book to the Government for deliverance to Owner.

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