Att_4_WRP_SPECS_TRENTON2013.pdf

451 West North Street Juneau, WI 53039-1120 Phone: (920) 386-9999 Fax: (920) 386-2222 www.wi.nrcs.usda.gov i

Trenton Township Wetland Restoration Project 2013

APPLICABLE WISCONSIN CONSTRUCTION SPECIFICATIONS

PROJECT SPECIFICATIONS - Special Provisions

WISCONSIN CONSTRUCTION SPECIFICATION - 1. Clearing

WISCONSIN CONSTRUCTION SPECIFICATION - 2. Excavation

WISCONSIN CONSTRUCTION SPECIFICATION - 5. Construction Site Pollution Control

WISCONSIN CONSTRUCTION SPECIFICATION - 7. Mobilization & Demobilization

WISCONSIN CONSTRUCTION SPECIFICATION – 50. Organic Fill for Ditch Fill or Filling

Note: Where the term Technician is used throughout the solicitation and resultant contract, this term shall mean Contracting Officer’s Technical Representative (COTR).

http://www.wi.nrcs.usda.gov/

Phone: (920) 386-9999 Fax: (920) 386-2222 ii

SPECIAL CONSTRUCTION PROVISIONS

Contents: Work under this section is intended to supplement the individual construction specifications. This section does not relieve the Contractor from fulfilling all items in said sections. The numbers of the section are referenced to those of USDA-NRCS-Wisconsin Section IV Technical Guide – Wisconsin Construction Specifications.

The Special Procedures items will supplement the standard specifications that are being referenced.

PERMITS

The contractor shall comply in entirety with the requirements of the following permits:

1. WDNR General WPDES Permit for storm water discharge from a construction site.

2. WDNR Chapter 30 Water Quality Certification.

TILE EXPLORATION (TILE SEARCH)

Description of Work

Tile Exploration, or Tile Search, shall be conducted by excavating an open trench to a depth of 5 feet

Measurement and Payment

Tile Exploration shall be measured to the nearest lineal foot and paid for at the contract unit price per lineal foot of Tile Exploration.

TILE REMOVAL

Tile Removal shall be performed to the typical specified lenghts shown for each area of the site. All tiles shall be deposited in the trench prior to backfilling or be removed from the site. No tile shall be left upon the surface.

Measurement and Payment

Tile Removal shall be measured to the nearest lineal foot and paid for at the contract unit price of Tile Removal.

Phone: (920) 386-9999 Fax: (920) 386-2222 iii

SEEDING

Contractor shall seed disturbed areas of the ditch fills, scrape areas, tile removals, tile exploration, spoil areas, and fill areas. This work shall consist of the site preparation activities and furnishing and installing the necessary vegetative material as specified on the seeding sheet included in the Plan. A pre-planting conference will be held between the Contractor and the COTR or their delegate to discuss the planting operation. Planting will not begin before this meeting.

Measurement and Payment

Seeding will not be measured and will be paid for at the contract lump sum price for Seeding.

WISCONSIN CONSTRUCTION SPECIFICATIONS

SECTION 1 – CLEARING

Clearing and grubbing shall be paid for at the contract lump sum price for Clearing.

SECTION 2 – EXCAVATION

Excavation will not be measured and will be paid as a lump sum for Excavation/Earthfill.

SECTION 50 – EARTHFILL

Earthfill will not be measured and will be paid as a lump sum for Excavation/Earthfill.

SECTION 5 – CONSTRUCTION SITE POLLUTION CONTROL

Silt Fence is required where ditch fills meet open water ditches. Practice shall include the installation, maintenance, and removal of silt fence shown on the Plan.

Silt Fence will not be measured and will be paid for at the contract lump sum price for Construction Site Pollution Control.

Phone: (920) 386-9999 Fax: (920) 386-2222 iv

SECTION 7 – MOBILIZATION AND DEMOBILIZATION

Mobilization and Demobilization will not be measured and will be paid for at the contract lump sum price for Mobilization.

USDA-NRCS-Wisconsin Section IV, Technical Guide 1-1 5/12

WISCONSIN CONSTRUCTION SPECIFICATION

1. Clearing

1. SCOPE

The work shall consist of the clearing and disposal of trees, snags, logs, brush, shrubs, stumps, and rubbish from the designated areas.

2. MARKING

The limits of the areas to be cleared will be marked by means of stakes, flags, tree markings, or other suitable methods. Trees to be left standing and uninjured will be designated by special markings placed on the trunks at a height of about 6 feet above the ground surface.

3. PROTECTION OF EXISTING VEGETATION

Trees and other woody vegetation designated to remain undisturbed shall be protected from damage throughout the entire construction period. Any damage resulting from the Contractor's operations or neglect shall be repaired by the Contractor.

Earthfill, stockpiling of materials, vehicular parking, and excessive foot or vehicular traffic shall not be allowed within the dripline of vegetation designated to remain in place. Vegetation damaged by any of these or similar actions shall be replaced with viable vegetation of the same species.

Any cuts, skins, scrapes, or bruises to the bark of the vegetation shall be carefully trimmed and local nursery accepted procedures used to seal damaged bark.

Any limbs or branches 0.5-inch or larger in diameter that are broken, severed, or otherwise seriously damaged during construction shall be cut off at the base of the damaged limb or branch flush with the adjacent limb or tree trunk.

All roots 1 inch or larger in diameter that are cut, broken, or otherwise severed during construction operations shall have the end smoothly cut perpendicular to the root. Roots exposed during excavation or other operations shall be covered with moist earth and/or backfilled as soon as possible to prevent them from drying.

4. CLEARING

Trees, brush, shrubs, stumps, and other woody growth shall be cleared to a height not exceeding 12 inches above the ground surface. Such growth may be cleared by cutting, pulling, grubbing, or other approved methods.

Trees shall be felled in such a manner as to avoid damage to trees that are to be left standing, existing structures, utilities, and with regard for the safety of persons.

When the designated areas to be cleared include borrow areas and/or areas upon which improvements are to be constructed, the required grubbing of stumps, roots, and other objectionable material in these areas shall be a part of this specification. The grubbing shall consist of the removal of all stumps, 5/12 1-2 roots of 1 inch in diameter or larger, buried logs, and other objectionable material to a minimum depth of 2 feet below a structure subgrade and 1 foot below an embankment foundation.

5. SITE EROSION CONTROL

Measures shall be installed, or the work performed in a manner that will minimize site erosion, and the production of sediment. Protective measures shall include but are not limited to diversions, waterways, seeding, mulching, sediment basins, and silt fences.

6. DISPOSAL

All materials cleared from the designated areas shall be burned or buried at approved locations or otherwise removed from the site. Buried materials shall be covered with a minimum of 2 feet of earthfill (including any topsoil added for seeding).

The Contractor is responsible for complying with all rules and regulations for disposal at locations away from the construction site or for the burning of cleared materials.

2-1 USDA-NRCS-Wisconsin

5/12

WISCONSIN CONSTRUCTION SPECIFICATION

2. Excavation

1. SCOPE

The work shall consist of the excavation of all materials necessary for the construction of the work.

2. USE OF EXCAVATED MATERIALS

To the extent that they are needed, all suitable materials removed from the specified excavations shall be used in the construction of the required earthfill. The suitability of materials for specific purposes will be determined by the Technician. The Contractor shall not waste or otherwise dispose of suitable excavated materials.

3. DISPOSAL OF WASTE MATERIALS

All surplus or unsuitable excavated materials will be designated as waste and shall be disposed of at the locations shown on the drawings or as approved by the Technician. Waste materials shall not be placed in wetlands.

Material placed in designated waste disposal areas shall be left in a neat and sightly condition and sloped to provide positive drainage. Compaction of the waste materials will not be required unless specified by the construction plans.

Waste material excavated from channels may be deposited in leveled spoilbanks or areas adjacent to the channel work (if permissible). The shape and slopes of the spoilbanks shall be indicated on the drawings or as approved by the Technician. Spoil piles shall be located a minimum of 12 feet from the top of the channel side slope.

Spoil piles or disposal areas shall be protected to minimize site erosion and the production of sediment. Protective measures may include but are not limited to diversions, seeding, mulching, sediment basins, and silt fences.

4. SPECIAL REQUIREMENTS FOR STRUCTURE AND TRENCH EXCAVATION

The required dimensions and side slopes of all structure and trench excavations shall be as shown on the drawings.

Excavation beyond the limits of the specified lines and grades shall be corrected by filling the resulting voids with approved compacted materials.

Excavation for the installation of pipes shall follow the practices contained in the Occupational Safety and Health Administration (OSHA) Subpart P, Excavation, of 29 CFR 1926.650, .651 and .652.

Side slopes shall be excavated or braced to safeguard the work and workers. When bracing or supporting is required, the width of the excavation shall be adjusted to allow for the space occupied by the sheeting, bracing, or other supporting installations. The Contractor shall furnish, place, and subsequently remove such supporting installations.

USDA-NRCS-Wisconsin 2-2

5/12

5. REMOVAL OF WATER

The Contractor shall construct and maintain all necessary cofferdams, channels, flumes, pumping equipment, and/or other temporary diversion and protective work for dewatering the various parts of the work. Foundations, cutoff trenches, and other parts of the work shall be maintained free from water as required for constructing each part of the work. After having served their purpose, all cofferdams and other temporary protective works shall be removed, or leveled to give a sightly appearance and so as not to interfere in any way with the operation, usefulness, or stability of the permanent structure.

6. BORROW EXCAVATION

When the quantities of suitable materials obtained from specified excavations are insufficient to construct the specified fill portions of the permanent works, additional materials shall be obtained from the designated borrow areas.

When shown on the drawings, sediment basins, terraces, diversions, or other measures shall be constructed to protect the borrow areas from erosion and retain sediment within the borrow area.

The upper six (6) inches shall be stripped from all borrow areas. This stripping shall be performed immediately prior to use of the borrow material to reduce the time the area is exposed to erosion. For large borrow areas, only a portion of the area should be stripped at a time. This material shall be redistributed over the area from which it came after borrow excavation is completed.

The extent of excavation and the selection of materials from the borrow area shall be as directed by the Technician. On completion of excavation, all borrow pits shall be left in a neat and sightly condition. All borrow areas shall be graded to blend with existing topography and sloped to prevent ponding and provide positive drainage.

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WISCONSIN CONSTRUCTION SPECIFICATION

5. Construction Site Pollution Control

1.

The work shall consist of installing measures or performing work to control erosion and minimize the production of sediment and other pollutants to water and air from construction activities.

SCOPE

2.

Erosion and sediment control measures and works shall be installed to prevent or minimize sediment production and transport offsite. The measures and works shall include, but are not limited to, the following:

MEASURES

a. Diversions - Divert water from work areas and collect water from work areas for treatment and safe disposition. Temporary diversions shall be removed and the area restored to its near original condition when the diversions are no longer required or when permanent measures are installed.

b. In-Channel Sediment Control - Sediment produced within the stream channel during construction will be retained in the work area. Sediment retention will be accomplished by using a temporary, excavated sediment trap and/or a barrier constructed of geotextile and hay bales. Turbid water in the retention area may be pumped to a well-vegetated area away from the stream. The vegetation will serve to filter the sediments before the flow returns to the stream. Discharge areas from all pump hoses shall be stabilized. At no time shall the pump discharge be allowed to cause erosion at the discharge point.

c. Mulching - Mulch provides temporary protection of the soil surface from erosion. The method of application is specified on the construction drawings

d. Sediment Basins - Sediment basins collect, settle, and eliminate sediment from eroding areas from impacting properties and streams below the construction site(s). These basins are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

e. Sediment Filters - Straw bale filters or geotextile sediment fences (silt fence) trap sediment from areas of limited runoff. Sediment filters shall be properly anchored to prevent erosion under or around them. These filters are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

The method is shown on the construction drawings.

f. Seeding - Seeding to protect disturbed areas shall occur as soon as reasonably possible following completion of that earthwork activity. All seeding operations shall be performed in such a manner that the seeds are applied in the specified quantities uniformly in the designated areas.

The method and rate of seed application are specified on the construction drawings

g. Silt Curtain or Turbidity Barrier - Silt Curtain and Turbidity Barriers can be used to minimize the transport of sediment from an area where construction activities are occurring within or directly adjacent to a waterway or waterbody. The fabric shall be removed after the construction activities have ceased and the sediment has settled. Care should be taken to prevent the re-suspension of sediment during removal.

h. Staging of Earthwork Activities - The excavation and moving of soil materials shall be staged to minimize the area disturbed and the time these locations are vulnerable to erosion.

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i. Stockpiling Material - The stockpiled materials shall be protected from concentrated flows and/or flooding, to minimize sediment movement offsite.

j. Stream Crossings - Culverts or bridges should be used where equipment crosses streams. They are temporary and shall be removed and the area restored to its near original condition when the crossings are no longer required or when permanent measures are installed.

k. Waterways - Waterways shall be used to safely dispose of runoff from fields, diversions, and other structures or measures. These works are temporary and shall be removed and the area restored to its original condition when they are no longer required or when permanent measures are installed.

l. It is the responsibility of the contractor or their designee for the cleanup or removal of sediment transported offsite due to failure to maintain erosion control measures during all phases of the construction.

3.

The contractor shall safely dispose of chemical pollutants (such as drained lubricating or transmission fluids, grease, soaps, concrete mixer washwater, or asphalt, produced as a byproduct of the construction activities) off site. The contractor is responsible for reporting and clean up of all accidental spills and leaks.

CHEMICAL POLLUTION

In the event a piece of equipment develops a leak during the construction work, the leak shall be repaired before work continues. All excess fluids will be cleaned from the machine prior to its return to the work area.

If a leak occurs when equipment is working in or near a waterbody, the machine shall be immediately moved a safe distance away from the waterbody.

4.

The burning of brush or slash and the disposal of other materials shall adhere to state and local regulations.

AIR POLLUTION

Fire prevention measures shall be taken to prevent the start or spreading of wildfires that may result from project activities. Firebreaks or guards shall be constructed and maintained.

All public access or haul roads used by the contractor during construction of the project shall be treated to fully suppress dust. All dust control methods shall ensure safe construction operations at all times. If chemical dust suppressants are applied, the material shall be a commercially available product specifically designed for dust suppression and the application shall follow manufacturer's requirements and recommendations. A copy of the product data sheet and manufacturer's recommended application procedures shall be provided to the technician before the first application.

5.

All pollution control measures and temporary works shall be adequately maintained in a functional condition for the duration of the construction period. All temporary measures shall be removed and the site restored to near original condition.

MAINTENANCE, REMOVAL, AND RESTORATION

All equipment used within the construction site shall be well maintained. All equipment lines and fittings shall be checked on a daily basis to ensure that they are in good working order.

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WISCONSIN CONSTRUCTION SPECIFICATION

7. Mobilization and Demobilization

1.

The work consists of the mobilization and demobilization of the Contractor's forces and equipment necessary for performing the work required.

SCOPE

2.

Mobilization shall include:

EQUIPMENT AND MATERIAL

• All activities and associated costs for transportation of the Contractor's personnel, equipment, and operating supplies to the site;

• Establishment of offices, buildings, and other necessary general facilities for the Contractor's operations at the site

• Premiums paid for performance and payment bonds including coinsurance and reinsurance agreements as applicable

• Construction and maintenance of haul roads and equipment parking areas

• Other job related items

Demobilization shall include:

• All activities and costs for transportation of personnel, equipment, and supplies not utilized in the project from the site

• Disassembly, removal, and site cleanup of offices, buildings, and other facilities assembled on the site.

• Repair of access roads, temporary haul roads, and equipment parking areas leaving the project site in the same or better condition than at the start of the project.

• General cleanup and house keeping needed to restore a neat and orderly project site.

Access to the site, equipment parking, and staging areas are limited to that shown on the drawings or as approved by the technician.

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WISCONSIN CONSTRUCTION SPECIFICATION

50. Organic Fill for Ditch Fills or Filling

1. SCOPE

The work shall consist of placing the organic fill required by the drawings.

2. MATERIALS

Organic fill includes the classifications of OL, OH, and PT (peat) as defined in ASTM D2488, Description and Identification of Soils (Visual-Manual Procedure).

All organic fill shall be obtained from required excavations and designated borrow areas. The selection, blending, routing, and disposition of materials shall be subject to approval by the Technician.

Organic fill shall contain no trees, stumps, or woody vegetation greater than 3 inches in diameter, or frozen material. Stones larger than 9 inches in diameter shall be removed from the materials prior to filling the ditch.

3. FOUNDATION PREPARATION

The foundation area shall be cleared of trees, stumps, and woody vegetation greater than 3 inches in diameter, rubbish and stones having a maximum dimension greater than 9 inches. The materials removed from the foundation shall be disposed of as required by the drawing, or as approved by the Technician.

4. BORROW EXCAVATION

The borrow area shall be cleared of trees, stumps, and woody vegetation greater than 3 inches in diameter, and rubbish and stones having a maximum dimension greater than 9 inches. The materials removed from the borrow area shall be disposed of as required by the drawings.

This work shall be performed immediately prior to use of the borrow material to reduce the time the area is exposed to erosion.

The extent of excavation and the selection of materials from the borrow area shall be as directed by the Technician. On completion of the excavation, all borrow areas shall be left to contain microtopography features (topography less than 6 inches in height or depth) or as directed by the Technician. All borrow areas shall be graded to blend with existing topography or as shown on the drawings.

5. PLACEMENT

Organic fill shall not be placed until the required excavation and preparation of the underlying foundation is completed, inspected, and approved by the Technician. No organic fill shall be placed upon a frozen surface nor shall snow, ice, or frozen material be incorporated in the organic fill.

Organic fill shall be placed to fill the ditch(es) as shown on the construction plan unless otherwise

3/12 50-2 approved by the Technician. The final grade of the ditchfill shall blend in with the existing topography.

The contractor shall furnish and operate the types and kinds of equipment necessary to place and shape the organic fill.

6. CONTROL OF MOISTURE CONTENT

Organic fill shall have a moisture content sufficient to insure the required placement and compaction.

When kneaded in the hand, the soil will retain a shape which does not readily separate and will not extrude out of the hand when squeezed tightly. The adequacy of the moisture content will be determined by the Technician.

Organic fill or the top surface of the preceding layer of compacted organic fill that becomes too dry to permit suitable bond shall either be removed or scarified and wetted by sprinkling to an acceptable moisture content prior to placement of the next layer of organic fill.

Organic fill or the top surface of the preceding layer of organic fill that becomes too wet shall be either removed or allowed to dry to an acceptable moisture content before compaction or placement of additional layers of organic fill.

7. COMPACTION

Compaction will be accomplished by pushing and shaping the organic fill unless additional compaction is specified by the construction plans. The Technician shall determine if adequate compaction is being achieved.