01571_wt_06_06.doc

SECTION 01571

STORM WATER POLLUTION PREVENTION

PART 1

GENERAL

1 .1 DESCRIPTION

A. The work of this section consists of implementing measures to prevent Storm Water Pollution during construction activities, in accordance with Federal, State, and local regulations, and in accordance with the Storm Water Pollution Prevention Plan (SWPPP) prepared for this project.

B. The Contractor’s attention is directed to the SPDES General Permit for Construction Activities in place for this project.

C.

The Contractor shall abide by all permit requirements and act as the USDA Forest Service’s agent under the permit.

1 .2 SUBMITTALS

A. Submit schedules for inspection and monitoring of all storm water pollution prevention measures.

B. Submit manufacturer’s product information and installation recommendations for silt fence, filter fabric and erosion control blanket, stone check dams, straw bales, and any other materials proposed for use on this project.

1 .3 QUALITY ASSURANCE

A. Before commencing construction activities, such as grading, excavation or filling in any part of the site, Contractor shall plan for temporary structures to guide runoff away from the work area and to capture eroded material before it reaches natural water courses. The measures shall be in accordance with reviewed and approved storm water pollution prevention plans.

B. Arrange construction activities to minimize erosion to the maximum practical extent. Clearing, excavation, and grading shall be limited to those areas of the project site necessary for construction as shown on the plans. Minimize the area exposed and unprotected.

C. Clearly mark and delineate the limits of work activities. Equipment shall not be allowed to operate outside the limits of work or to disturb existing vegetation. Excavation and grading shall be completed during the dry season to the maximum extent possible.

1 .4 REGULATORY REQUIREMENTS

A. Implement the requirements of the National Pollutant Discharge Elimination System (NPDES) for erosion control due to storm water runoff during construction.

B. Notice of Intent (NOI)

1. Prior to construction, the Contractor shall confirm with the USDA Forest Service that the NOI has been filed and the Stormwater Pollution Prevention Plan has been approved.

2. The SWPPP will be the document in force on the project. The accepted SWPPP will describe and ensure implementation of the practices which will be used to reduce the pollutants in storm water discharges to assure compliance with the terms and conditions of the EPA permit. Place the SWPPP and all updates in a three-ring binder so that completed inspection forms and other records may be inserted. The Contractor shall maintain a current copy of the SWPPP and all associated records and forms at the jobsite throughout the duration of the project. The SWPPP shall be available for public inspection and for the inspection and use of the CO.

3. Implement the SWPPP as required throughout the construction period and maintain all erosion control elements in proper working order. Do not perform clearing and grubbing or earthwork until the SWPPP has been implemented. Prior to construction, the Contractor and all subcontractors shall sign certifications (included in the SWPPP) that they understand the requirements of the NPDES permit. All subcontractors shall comply with the requirements of the NPDES under the supervision of the Contractor. The contractor shall designate the erosion control supervisor who will be responsible for implementing the SWPPP. The erosion control supervisor shall be familiar with the SWPPP procedures and practices and shall ensure that emergency procedures and the SWPPP are updated as needed and available for inspection. The SWPPP (including inspection forms) and all data used to complete the NOI shall be provided to the CO at the completion of the project.

4. Inspections and Revisions to Plan:

a. The Contractor and the CO will perform a weekly inspection of the site. The inspection shall include disturbed areas that have not been finally stabilized, areas used for storage of materials, locations where vehicles enter or exit the site, and all erosion and sediment controls that are included in the Plan. Inspections shall be documented on forms provided in the Plan. The inspection forms shall be retained onsite in the Plan notebook throughout the construction period.

b. It may be necessary to revise the Plan during construction to make necessary improvements or revisions or to respond to unforeseen conditions noted during construction or site inspections. For that purpose, the Plan shall specify the mechanism whereby revisions may be proposed by the Contractor or the CO and incorporated into the Plan, including review and acceptance of minor changes. The Contractor and the CO will jointly accept and sign each revision to the Plan before implementation. Accepted modifications will be implemented within 7 calendar days following the date of the inspection when deficiencies or necessary corrections are first noted.

c. Temporary erosion and pollution control measures shall be used to correct conditions that develop during construction that were not foreseen during design, that are needed prior to installation of permanent control features, or that are needed temporarily to control erosion that developed during normal construction practices but are not associated with permanent control features on the project.

d. Provide additional temporary erosion and pollution controls made necessary by Contractor’s errors or negligence at no additional cost to the Government.

e. Maintain erosion and sediment control features until final acceptance of project.

C. Notice of Termination (NOT)

1. Upon final acceptance, the Contractor shall coordinate with the Contracting Officer for the filing of the NOT.

1 .5 JOB CONDITIONS

A. The Contractor shall maintain records of work performed on the sediment control structures.

B. The Contractor shall not remove any erosion or sediment control measure without prior permission from the Contracting Officer.

C. The Contractor shall obtain approval from the Contracting Officer prior to making changes to erosion control plans.

1 .6 SEQUENCE OF CONSTRUCTION

A. The Contractor shall be responsible for arranging and conducting an Erosion and Sediment Control meeting/briefing to inform all parties scheduled to be on-site during the project of the measures to be implemented for proper erosion and sediment control (may be included as part of the Pre-Construction Meeting).

1. Installation of silt fences and all other forms of erosion and sediment control shall not begin until after this meeting has occurred.

B. The Contractor shall notify the Contracting Officer in writing and by telephone of the following events:

1. The required erosion and sediment control meeting/briefing.

2. Following installation of required sediment control structures.

3. Prior to removal of or modification to sediment control structures.

4. Prior to removal of all sediment control structures.

C. Silt fences and all other forms of erosion and sediment control shall be installed, inspected, and accepted by the Contracting Officer before beginning any utility excavation.

D. Temporary silt fences shall be installed around any stockpiles and/or excavated material that cannot be backfilled during the same day in which it was excavated. Temporary silt fences shall also be placed immediately downstream of any utility trench that has not been backfilled at the end of the working day. Temporary silt fences shall be installed prior to leaving the work site for the day.

E. Silt fences and storm drain protection shall be inspected by the Contractor weekly. Repairs to these devices shall be completed prior to leaving the work site for the day.

F. The Contractor shall prevent the deposition of materials onto paved areas. The Contractor shall inspect the paved areas for deposited materials weekly and remove the materials immediately.

G. Failure to maintain silt fences and storm drain protection shall be cause for an immediate stop-work order.

H. Silt fences shall be removed with permission of the Contracting Officer within 20 working days after final acceptance of the project and/or after the establishment of permanent stabilization of all excavations and fill areas.

PART 2

PRODUCTS

2.1

EQUIPMENT

A.

Before the work begins, sufficient equipment shall be available on the site to assure that the operation and adequacy of the erosion control plans can be continuously maintained.

2.2

EROSION CONTROL PRODUCTS

A.

Silt Fence.

B.

Stone Check Dams.

2.3

EROSION CONTROL MEASURES

A.

Erosion control measures shall consist of silt fencing, barrier protectors, stone check dams, straw bales, temporary soil retention blankets, excelsior drainage filters, sediment traps and berms.

B.

Berms and excelsior drainage filters shall be used to form sediment traps and to control run-on and run-off into other areas, including creeks, streams, marshes, access roads, well areas, and the staging areas.

C.

Erosion control measures shall be used to contain only direct precipitation in the construction zone. The contained water shall be allowed to percolate into the ground or drain slowly through the drainage filter sediment traps.

D.

Earthen sediment traps or holding ponds shall not be used unless accepted by the Contracting Officer.

PART 3

EXECUTION

3.1

GENERAL DESCRIPTION

A.

Furnish, install, maintain, and operate necessary control measures and other equipment necessary to prevent erosion. Temporary measures shall be as depicted on the plans.

3.2

METHODS

A.

Construct berms to reduce runoff velocity as well as direct surface runoff around and away from all fuel containment, storage, and borrow areas.

B.

Divert surface runoff around and away from cut and fill slopes by constructing berms or ditches at the base of disturbed slopes. Provide conveyance for the runoff in temporary pipes or protected channels to temporary sediment traps.

C.

Excess water used for dust control shall be contained within the demolition areas by the erosion control measures.

3.3

MAINTENANCE OF TEMPORARY FACILITIES

A.

Inspect erosion and sediment control structures weekly. Ensure erosion and sediment control structures remain effective throughout excavation and grading operations. Relocate structures as necessary.

B.

Inspect control structures after each significant rainfall. Promptly repair breaches which occur.

C.

The Contractor shall remove entrapped sediment from behind excelsior drainage filter after each storm.

3.4

DISPOSAL OF SEDIMENT FROM STORM WATER POLLUTION CONTROL STRUCTURES

A.

Sediment excavated from temporary sediment control structures shall be disposed on the site with general fill, or with topsoil. Sediment shall be allowed to dry out as required before reuse.

B.

Contractor shall place the sediment removed from traps and other structures where it will not enter a storm drain or watercourse and where it will not immediately reenter the basin.

3.5

REMOVAL OF TEMPORARY STORM WATER POLLUTION CONTROL MEASURES

A.

All temporary control measures shall be removed with permission of the Contracting Officer within 20 working days after final acceptance of the project, and/or once grading is completed and slopes have stabilized.

END OF SECTION

WAYNE NATIONAL FOREST,

01571-1

ROAD IMPROVEMENT PROJECTS, PROJECT NO.

STORM WATER POLLUTION PREVENTION