DFS1FD 31 22 70 SEDIMENTATION AND EROSION CONTROL 072226DR - pdf.pdf

SEDIMENTATION AND EROSION CONTROL

31 22 70-1

DARTMOUTH FIRE STATION NO. 1

NEW FUEL DEPOT

DARTMOUTH, MASSACHUSETTS 22 JULY 2026

RT ARCHITECTS, INC.

SECTION 31 22 70

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. All of the Contract Documents, including Drawings, General and Supplementary Conditions and Division 1 - General

Requirements, apply to the Work of this Section.

1.02 DESCRIPTION OF WORK

A. The Work of this Section includes, but is not limited to, furnishing, installation, maintenance and the removal of the following:

1. All labor, materials, equipment and other incidentals required to complete all sedimentation and erosion control work as shown or specified.

B. Work Included:

1. Preparation, submission of, and compliance with an approved, phased erosion control plan to include materials and measures required to control soil erosion resulting from construction operations for the duration of the project.

2. Installation and maintenance of erosion control devices including haybales, siltation fences, sedimentation basins, temporary diversion swales and slope drains.

3. Stabilization of temporary construction access routes, on site vehicular transportation routes and construction parking areas including crushed stone entry pads.

4. Seeding, mulching sodding and or installation of erosion control fabrics in critical areas to provide temporary protection for the duration of the construction process.

5. Dust control.

6. Compliance with a Stormwater Pollution Prevention Plan (SWPPP).

7. Designation of an Erosion Control Supervisor and submission of weekly erosion control reports.

8. Sediment removal and disposal.

9. Maintenance of erosion control device

10. Removal of erosion control devices

11. Final clean up

C. The Contractor shall adhere to plans and specifications showing methods to be used for erosion control during construction period along with schedule of construction operations.

D. It is not the intent herein to describe all the items and work to be required under this Section. The Contractor shall assure himself that all work to be completed, not otherwise specified herein but shown on the drawings or implied, shall be accomplished under this Section at no additional cost to the Owner.

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NEW FUEL DEPOT

1.03 RELATED WORK SPECIFIED ELSEWHERE

A. Carefully examine all the Contract Documents for requirements that effect the Work of this Section.

B. Other Specification Sections which directly relate to the Work of this section include, but are not limited to, the following:

1. Section 01 00 00 General Requirements

2. Section 01 26 00 Contract Modification Procedures

3. Section 01 33 00 Submittal Procedures

4. Section 01 77 00 Contract Closeout Procedures

5. Section 01 78 39 Project Record Documents

6. Section 26 00 00 Electrical

7. Section 31 20 00 Earthwork

8. Section 31 22 70 Sedimentation and Erosion Control

9. Section 32 12 16 Paving and Surfacing

10. Section 32 55 40 Above Ground Storage Tank and Equipment

1.04 REFERENCE SPECIFICATIONS

A. A.S.T.M. - American Society for Testing and Materials.

B. A.A.S.H.T.O. - American Association of State Highway and Transportation Officials.

C. S.S.H.B. - Standard Specifications for Highways and Bridges, the Commonwealth of Massachusetts, Department of Public Works, latest edition.

D. Massachusetts Erosion and Sedimentation Control Guidelines for Urban and Suburban areas, latest edition.

1.05 PERFORMANCE REQUIREMENTS

A. The Contractor shall be responsible for the timely installation and maintenance of all sedimentation control and dewatering devices necessary to prevent the movement of sediment from the construction site to off site areas or into wetlands, or other drainage systems throughout the construction project and until such time as vegetative cover has been established. Measures in addition to those shown on the Drawings necessary to prevent the movement of sediment off site including siltation fencing, haybales, temporary seeding, siltation basins, diversion swales check dams and trenches shall be installed, maintained, removed and cleaned up for the duration of the construction at the expense of the Contractor. No additional charges to the owner shall be considered.

1.06 PROJECT CONDITIONS

A. Install soil erosion and sediment control materials prior to any major soil disturbance, or in proper sequence, and maintain until permanent vegetation is established.

B. Immediately seed and or cover with approved erosion control blankets or mulch, any disturbed areas that will be exposed for more than 30 days, and not subject to construction traffic. If season prohibits temporary seeding, mulch disturbed areas with salt hay or equivalent and bind in accordance with Massachusetts Department of Public Works Standards. If construction sequence spans seasons that prohibit immediate temporary seeding, perform temporary seeding as soon as climatic conditions permit. Install and maintain siltfence and haybales or straw waddles around all stockpiled soils.

C. Comply with applicable local and state regulations relating to the prevention and abatement of pollution.

D. Coordinate work with that of other trades affecting or affected by work of this Section and cooperate with such trades to assure uninterrupted progress of work.

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NEW FUEL DEPOT

1.07 RECORD DRAWINGS

A. Conforming to Contract requirements, furnish and keep at job site a plan that illustrates proposed erosion control procedures.

B. Clearly, neatly and accurately note on plan all changes, revisions, and additions to the work.

C. Update plan promptly as work progresses.

1.08 CRITICAL AREAS

A. Those areas subject to excessive erosion due to highly erodible soil, slope length and steepness, or water concentrations.

Concentrations of runoff water, or other reasons may cause areas to be critical. All areas that may become critical when vegetation or other soil surface protection is removed as shown or noted on the drawings or otherwise identified.

1.10 SUBMITTALS

A. Provide submittals in accordance with requirements of Section 01 33 00 – Submittal Procedures

PART 2 - MATERIALS

2.01 SILT FENCE

A. Sediment Control Fence: Preassembled silt-fence consisting of 36" wide woven propylene geotextile fabric and 4' long by

1-1/2" square hardwood posts spaced 7.7' apart. "Envirofence" by Mirafi Inc. or approved equivalent.

2.02 HAY BALES

A. Hay Bales: Rectangular shaped bales of hay or straw with baling wire or twine weighing minimum 40 lbs. per bale; free from primary noxious weed seeds and rough or woody materials.

B. Wood Stakes: 2" x 2" x 36” sound Cedar, reasonably free of knots, and pointed at one end.

2.03 TEMPORARY SEEDING AND SODDING

A. Limestone: Free-flow Agricultural Grade dolomitic limestone meeting requirements of state specifications.

B. Fertilizer: Commercial fertilizer, 10-20-10 or equivalent, conforming to state specifications.

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DARTMOUTH FIRE STATION NO. 1

NEW FUEL DEPOT

C. Seed: Conforming to state and federal seed laws; previous year's crop, furnished and delivered premixed in following proportions:

Lbs./ Acre Name

Min.

Germination

Min.

Purity

20 Perennial Rye Grass 85% 95%

15 Creeping Red Fescue 85% 98%

15 Chewing Red Fescue 85% 98%

D. Mulch: Unrotted salt hay or small grain straw.

E. Sod: Composed of Kentucky Bluegrass mixture as recommended by the New England Sod Producer's Association and approved by the Architect

2.04 LATEX TACKIFIER

A. Latex acrylic copolymer, such as Soil Sealant with coalescing agent as manufactured by Soil Stabilization Co., Merced, California or approved equivalent shall be used as straw mulch tackifier.

2.05 SOIL STABILIZER / DUST CONTROL

A. Soil stabilization agent shall be a copolymer emulsion, environmentally safe, biodegradable, durable, and resistant to water, sun alkaline and daily use

B. Agent shall be Soiltac as manufactured by Soilworks LLC, Gilbert, Arizona (800) 545-5420 or approved equivalent.

2.06 EROSION CONTROL BLANKETS

A. Erosion control blankets shall be composed of 100 percent biodegradable mesh with 100 percent biodegradable straw or straw/coconut fill. and shall be installed parallel to the direction of water flow. Weight shall be 0.50 pounds per square yard.

Erosion control blankets be as manufactured by North American Green, Evansville, IN or approved equal. For slope 2:1 or greater, erosion control blanket shall be composed of 70 percent straw and 30 percent coconut fiber, Model SC150. For slopes less than 2:1, erosion control blanket shall be high velocity straw matting, Model S150. Six-inch wire staples shall be placed in accordance with the manufacturer’s recommendations to the anchor the mesh material.

2.07 STRAW WADDLES

A. Wattles shall be made from 100% synthetic fibers 12” wide X 25’ long with pre made stakes as manufactured by The BPM

Store or approved equivalent

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DARTMOUTH FIRE STATION NO. 1

NEW FUEL DEPOT

PART 3 - EXECUTION

3.01 SILT FENCE AND HAY BALE INSTALLATION

A. Silt fences and hay bales shall be positioned as indicated on the approved Erosion Control Plan and as necessary for the duration of construction period to prevent erosion and off site movement of sediment produced by construction activities and as directed by the Architect.

B. Dig trench approximately two feet (2’) wide and six inches (6") deep along proposed haybale / fence

C. Install silt fence and bales as shown on the Drawings.

C. Backfill trench with excavated material and install a single row of hay bales tightly against the siltation fence and stake with two (2) hardwood stakes per bale.

D. Installation of hay bales and silt fence shall be in accordance with the following dimensional criteria:

Maximum Slope Length Upslope from Hay Bale / Silt Fence

% Slope Maximum Slope Length in Feet

1 180’ 4 100’

9 60’

14 40’

18 30 30 20

E. Furnish, place and maintain silt fence and hay bales as specified and as shown on the Drawings. Remove and dispose of upon establishment of vegetative cover.

3.02 CRUSHED STONE ENTRANCE PADS

A. Crushed stone entrance pads shall be installed at all access points

B. Strip loam and subsoil twelve inches deep for area below pad and compact subgrade.

C. Place soil separator on prepared subgrade and backfill with crushed stone twelve inches deep.

D. Remove and replace stone once it has become contaminated with silt.

3.03 WATTLE INSTALLATION

A. Wattles shall be installed perpendicular to the direction of water. Wood stakes shall be placed in accordance with the manufacturer’s recommendations.

3.04 EROSION CONTROL BLANKET:

A. Erosion control blankets shall be installed parallel to the direction of water. Six-inch wire staples shall be placed in accordance with the manufacturer’s recommendations to anchor the mesh material.

3.05 TEMPORARY SEEDING / STABILIZATION:

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DARTMOUTH FIRE STATION NO. 1

NEW FUEL DEPOT

A. Apply ground limestone at rate of 90-lbs./1000 sq. ft.

B. Apply fertilizer at rate of 14-lbs./1000-sq. ft., worked into soil a minimum of 4 in.

C. Apply seed mixture. Seed only between May 1 and May 15, or August 15 and September 15.

D. Apply mulch at rate of 79 to 90 lbs./1000 sq. ft. in accordance with referenced standards. Secure mulch with peg and twine, mulch netting, liquid mulch binder, or other approved method.

3.06 SOIL STABILIZER

A. Soil stabilizer shall be applied to prevent dust and loss of soil due to erosion. Apply agent as per manufacturer’s instructions and as directed by the Architect.

B. Application rates: Per manufacturer’s recommendations.

C. Traffic areas shall be compacted to 95% prior to application of agent.

3.07 MAINTENANCE AND INSPECTIONS

A. Contractor shall make a visual inspection of all sedimentation control devices once per week and promptly after every rainstorm. If such inspection reveals that additional measures are needed to prevent movement of sediment to off site areas Contractor shall promptly install additional devices as needed. Sediment controls in need of maintenance shall be repaired promptly.

B. Weekly Inspection report

1. Prepare weekly inspection report to the Architect by a designated erosion control inspector.

2. Inspector’s emergency phone number shall be on file with the Architect for contact should an emergency require immediate attention.

C. Maintenance

1. Silt Fences, Hay Bales, Wattles

a. Remove accumulated sediment once it builds up to half of the height of the haybale, siltfence or wattle.

b. Replace damaged fabric, or patch with a two foot (2') minimum overlap.

c. Make other repairs as necessary to ensure that the device is filtering all runoff directed to it.

d. Replace devices when saturated with silt or otherwise damaged.

2. Siltation basins, check dams, etc.

a. Remove accumulated sediment once it builds up to half of the depth of the device.

D. Contractor shall immediately correct any erosion control problem.

3.08 REMOVAL AND FINAL CLEANUP

A. Once the site has been fully stabilized against erosion, (approximately one full growing season) remove sediment control devices and all accumulated silt. Dispose of silt and waste materials in proper manner. Re-grade all areas disturbed during this process and stabilize against erosion with surfacing materials and erosion control devices as directed by the Architect until vegetation has sufficiently developed.

END OF SECTION