Big Caney Construction Specifications.pdf

KS-NRCS NEH 642 - 5/01 2-1

Construction Specification 2—Clear ing and Grubbing

1. Scope The work consists of clearing and grubbing and disposal of trees, snags, logs, brush, stumps, shrubs, and rubbish from the designated areas.

2. Protection of existing vegetation Trees and other vegetation designated to remain undisturbed shall be protected from damage throughout the duration of the construction period. Any damages 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 drip line 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, similar condition, and like size unless otherwise approved by the contracting officer.

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 or backfilled as soon as possible to prevent the roots from drying out.

3. Marking The limits of the area(s) to be cleared and grubbed will be marked by stakes, flags, tree markings, or other suitable methods. Trees to be left standing and uninjured will be designated by special markings placed on the trunk about 6 feet above the ground surface.

4. Clear ing and grubbing All trees not marked for preservation and all snags, logs, brush, stumps, shrubs, rubbish, and similar materials shall be cleared from within the limits of the designated areas. Unless otherwise specified, all stumps, roots, and root clusters that have a diameter of 1 inch or larger shall be grubbed out to a depth of at least 2 feet below subgrade for concrete structures and 1 foot below the ground surface at embankment sites and other designated areas.

5. Disposal All materials cleared and grubbed from the designated areas shall be disposed of at locations shown on the drawings or in a manner specified in section 7. The contractor is responsible for complying with all local rules and regulations and the payment of any and all fees that may result from disposal at locations away from the project site.

6. Measurement and payment For items of work for which specific lump sum prices are established in the contract, payment for clearing and grubbing is made at the contract lump sum price. Such payment shall constitute full

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compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Compensation for any item of work described in the contract, but not listed in the bid schedule will be included in the payment for the item of work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identified in section 7.

NRCS - December 18, 2009 2-3 KS – Big Caney Watershed, FRD No. 18

7. Items of work and construction details Items of work to be performed in conformance with this specification and the construction details are:

Bid Item 1 - Clearing and Grubbing

(1) This item consists of the clearing and grubbing of the earthwork area on the dam site, the surfaces of the borrow areas, and the parking area indicated on the drawings.

The clearing and grubbing of the embankment area shall extend to a distance 20 feet outside the toe of the completed fill. The clearing and grubbing in the borrow area shall be limited to the area actually needed for borrow, stockpiling material, or mixing soil amendment.

(2) Blasting shall not be permitted in the vicinity of the principal spillway except as approved by the engineer.

(3) All woody debris is to be buried in waste areas shown on the drawings. Debris may be chipped, ground, or burned prior to being buried. Chipped or ground debris may be used for dust suppression on haul roads during construction.

(4) Materials to be disposed of by burying shall be covered with earth to a depth of at least 2 feet.

(5) At least the top 6 inches of the 2 feet of cover material shall be topsoil. These areas shall be graded and finished in a workmanlike manner to prevent the ponding of water.

(6) Measurement and payment will be as specified in section 6.

(7) Payment will constitute compensation for the related subsidiary item:

Structure Removal - Construction Specification 3

KS-NRCS NEH 642 - 5/01 3-1

Construction Specification 3—Structure Removal

The work shall consist of the removal, salvage, and disposal of structures (including fences) from the designated areas.

2. Marking Each structure or structure part to be removed will be marked with stakes, flags, paint, or other suitable method.

3. Removal All structures designated for removal in the contract shall be removed to the specified extent and depth.

4. Salvage Structures or structure parts that are designated to be salvaged shall be carefully removed and neatly placed in the specified or approved storage location. Salvaged structures that are capable of being disassembled shall be dismantled into individual members or sections. Such structures shall be neatly and systematically match marked with paint before disassembly. All connectors and other parts shall be marked to indicate their proper location within the structure and shall be fastened to the appropriate structural member or packed in suitable containers.

Material from fences designated to be salvaged shall be placed outside the work area on the property on which the fence was originally located. Fence wire shall be rolled into uniform rolls of suitable size and neatly piled with other salvaged materials. Posts and rails shall be neatly stacked.

5. Disposal of refuse mater ials Refuse materials resulting from structure removal shall be disposed of in a manner and at locations specified in section 7 of this specification or in an acceptable manner and at locations approved by the contracting officer. Disposal by burning shall be in accordance with local rules and regulations.

6. Measurement and payment For items of work for which specific lump sum prices are established by the contract, payment for structure removal is made at the contract lump sum price.

Such payment will constitute full compensation for all labor, equipment, tools, applicable permits and associated fees for burning and disposal of refuse, and all other items necessary and incidental to the completion of the work.

Compensation for any item of work described in the contract, but not listed as a contract line item number in the bid schedule, is included in the payment for the item of work to which it is made subsidiary. Such items and items to which they are made subsidiary are identified in section 7 of this specification.

NRCS - December 18, 2009 3-2

7. Items of work and construction details

a. Subsidiary Item - Structure Removal

(1) This item consists of removing the fences in the construction area as shown on the drawings.

(2) Refuse material shall be disposed of in the approved local county landfill or waste areas located downstream of the dam.

(3) Materials to be disposed of by burying shall be covered with earth to a depth of at least 2 feet.

(4) On areas not covered by permanent water, at least the top 6 inches of the 2 feet of cover material shall be topsoil. These areas shall be graded and finished in a workmanlike manner to prevent the ponding of water.

(5) No separate payment will be made for Structure Removal. Compensation for

Structure Removal will be included in the payment for Clearing and Grubbing.

KS-NRCS NEH 642 - 5/01 5-1

Construction Specification 5—Pollution Control

The work consists 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.

2. Mater ial All material furnished shall meet the requirements of the material specifications listed in section 8 of this specification.

3. Erosion and sediment control measures and works The measures and works shall include, but are not limited to, the following:

Staging of earthwork activities—The excavation and moving of soil materials shall be scheduled to minimize the size of areas disturbed and unprotected from erosion for the shortest reasonable time.

Seeding—Seeding to protect disturbed areas shall occur as soon as reasonably possible following completion of that earthwork activity.

Mulching—Mulching to provide temporary protection of the soil surface from erosion.

Diversions—Diversions to divert water from work areas and to collect water from work areas for treatment and safe disposition. They are temporary and 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.

Stream crossings—Culverts or bridges where equipment must cross 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.

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.

Sediment filters—Straw bale filters or geotextile sediment fences 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.

Waterways—Waterways for the safe disposal 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.

Other—Additional protection measures as specified in section 8 of this specification or required by Federal, State, or local government.

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4. Chemical pollution The contractor shall provide watertight tanks or barrels or construct a sump sealed with plastic sheets to dispose of chemical pollutants, such as drained lubricating or transmission fluids, grease, soaps, concrete mixer washwater, or asphalt, produced as a by-product of the construction activities. At the completion of the construction work, sumps shall be removed and the area restored to its original condition as specified in section 8 of this specification. Sump removal shall be conducted without causing pollution.

Sanitary facilities, such as chemical toilets, or septic tanks shall not be located next to live streams, wells, or springs. They shall be located at a distance sufficient to prevent contamination of any water source. At the completion of construction activities, facilities shall be disposed of without causing pollution as specified in section 8 of this specification.

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

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 at locations shown on the drawings.

All public access or haul roads used by the contractor during construction of the project shall be sprinkled or otherwise 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 engineer 5 working days before the first application.

6. Maintenance, removal, and restoration 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.

7. Measurement and payment For items of work for which lump sum prices are established in the contract, payment will be prorated and provided in equal amounts on each monthly progress payment estimate. The number of months used for prorating shall be the number estimated to complete the work as outlined in the contractor's approved construction schedule. The final month's prorate amount will be provided with the final contract payment. Payment as described will constitute full compensation for completion of the work.

Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items, and the items to which they are made subsidiary, are identified in section 8 of this specification.

NRCS - December 18, 2009 5-3 KS - Big Caney Watershed, FRD No. 18

8. Items of work and construction details

a. Bid Item 2 - Pollution Control Measures

(1) This item shall consist of providing a sanitary toilet facility for the job site, the collection and disposal of chemical pollutants, and the installation and maintenance of structural measures required for control of sediment pollution including silt fence barriers and straw bale barriers.

(2) Chemical Pollution Control

(a) All waste and/or used oils and grease shall be caught in containers suitable for the storage and transportation of such pollutants. All materials shall be transported to a commercial chemical disposal facility capable of either recycling or disposing of the pollutants. The manifest(s) for all chemical pollutants and other materials removed from the site shall be, upon request, made available to the Contracting Officer or the Contracting Officer's Representative.

The manifest(s) shall include the date of transport, destination, description of materials transported, name of the recipient recycling facility or recipient disposal facility.

Soil materials contaminated by chemical pollutants shall be either disposed of with the pollutant materials or buried in the designated downstream waste area(s), spread out to no more than 6 inches deep, disked to mix into soil, and covered with not less than 12 inches of topsoil.

(b) At the completion of construction, all sanitary facilities shall be removed from the site. Any materials contaminated by the sanitary facilities, their installation, operation, or removal shall immediately be removed and disposed of in accordance with all federal, state, and local regulations.

(c) An earthen dike will be constructed and maintained around all fuel storage tanks.

The height of the dike will be as needed to contain the stored fuel without overtopping.

(d) All areas disturbed by pollution cleanup operations shall be restored to as nearly original conditions as practicable.

(3) Structural Sediment Barriers

(a) Structural sediment control measures shall be in place prior to beginning operations when practical. Temporary earthen dikes may be installed at the end of the workday in locations where no other measures exist.

(b) Silt fence barriers or straw bale barriers shall be installed where sediment barriers are indicated on the drawings. The Engineer may identify additional locations requiring these control measures during the course of construction. All materials used for constructing silt fence barriers and straw bale barriers shall be approved by the Engineer prior to installation.

NRCS - December 18, 2009 5-4 KS - Big Caney Watershed, FRD No. 18

(c) All structural sediment control measures shall be maintained until no longer needed. Such maintenance shall include clean out of accumulated sediment and debris, repair or replacement of embankments or outlet pipes, and maintenance of vegetation or mulch.

(d) Sediment and debris removed from the structures shall be buried or placed in the designated waste areas in accordance with Item 10e, Disposal of Waste Material, in Construction Specification 21 - Excavation.

(e) All structural sediment pollution control measures shall be removed at the completion of the phase of work for which they are used. Such removal shall be at the approval of the Engineer.

(4) Measurement and payment will be as specified in Section 7.

KS-NRCS NEH 642 - 5/01 6-1

Construction Specification 6—Seeding, Spr igging, and Mulching

The work consists of preparing the area for treatment; furnishing and placing seed, sprigs, mulch, fertilizer, inoculant, lime, and other soil amendments; and anchoring mulch in designated areas as specified.

2. Mater ial Seed—All seed shall conform to the current rules and regulations of the state where it is being used and shall be from the latest crop available. It shall meet or exceed the standard for purity and germination listed in section 7.

Seed shall be labeled in accordance with the state laws and the U.S. Department of Agriculture rules and regulations under the Federal Seed Act in effect on the date of invitations for bids. Bag tag figures are evidence of purity and germination. No seed will be accepted with a test date of more than 9 months before the delivery date to the site.

Seed that has become wet, moldy, or otherwise damaged in transit or storage will not be accepted.

The percent of noxious weed seed allowable shall be as defined in the current State laws relating to agricultural seeds. Each type of seed shall be delivered in separate sealed containers and fully tagged unless exception is granted in writing by the contracting officer.

Fertilizer—Unless otherwise specified, the fertilizer shall be a commercial grade fertilizer. It shall meet the standard for grade and quality specified by State law. Where fertilizer is furnished from bulk storage, the contractor shall furnish a supplier's certification of analysis and weight.

When required by the contract, a representative sample of the fertilizer shall be furnished to the contracting officer for chemical analysis.

Inoculants—The inoculant for treating legume seeds shall be a pure culture of nitrogen-fixing bacteria prepared specifically for the species and shall not be used later than the date indicated on the container or as otherwise specified. A mixing medium, as recommended by the manufacturer, shall be used to bond the inoculant to the seed. Two times the amount of the inoculant recommended by the manufacturer shall be used except four times the amount shall be used when seed is applied using a hydraulic seeder. Seed shall be sown within 24 hours of treatment and shall not remain in the hydraulic seeder longer than 4 hours.

Lime and other soil amendments—Lime shall consist of standard ground agriculture limestone, or approved equivalent. Standard ground agriculture limestone is defined as ground limestone meeting current requirements of the State Department of Agriculture. Other soil amendments shall meet quality criteria and application requirements specified in section 7.

Mulch tackifiers—Asphalt emulsion tackifiers shall conform to the requirements of ASTM D 977, Specification for Emulsified Asphalt. The emulsified asphalt may be rapid setting, medium setting, or slow setting. Nonasphaltic tackifiers required because of environmental considerations shall be as specified in section 7.

Straw mulch material—Straw mulch shall consist of wheat, barley, oat or rye straw, hay, grass

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cut from native grasses, or other plants as specified in section 7. The mulch material shall be air-dry, reasonably light in color, and shall not be musty, moldy, caked, or otherwise of low quality.

The use of mulch that contains noxious weeds is not permitted. The contractor shall provide a method satisfactory to the contracting officer for determining weight of mulch furnished.

Other mulch materials—Mulching materials, such as wood cellulose fiber mulch, mulch tackifiers, synthetic fiber mulch, netting, and mesh, are other mulching materials that may be required for specialized locations and conditions. These materials, when specified, must be accompanied by the manufacturer's recommendations for methods of application.

3. Seeding mixtures, sod, spr igs, and dates of planting The application rate per acre for seed mixtures, sprigs, or sod and date of seeding or planting shall be as shown on the plans or as specified in section 7.

4. Seedbed preparation and treatment Areas to be treated shall be dressed to a smooth, firm surface. On sites where equipment can operate on slopes safely, the seedbed shall be adequately loosened (4 to 6 inches deep) and smoothed. Depending on soil and moisture conditions, disking or cultipacking, or both, may be necessary to properly prepare a seedbed. Where equipment cannot operate safely, the seedbed shall be prepared by hand methods by scarifying to provide a roughened soil surface so that broadcast seed will remain in place.

If seeding is to be accomplished immediately following construction operations, seedbed preparation may not be required except on a compacted, polished, or freshly cut soil surface.

Rocks larger than 6 inches in diameter, trash, weeds, and other debris that will interfere with seeding or maintenance operations shall be removed or disposed of as specified in section 7.

Seedbed preparation shall be discontinued when soil moisture conditions are not suitable for the preparation of a satisfactory seedbed as determined by the contracting officer's technical representative (COTR).

5. Seeding, spr igging, fer tilizing, mulching, and stabilizing All seeding or sprigging operations shall be performed in such a manner that the seed or sprigs are applied in the specified quantities uniformly in the designated areas. The method and rate of seed application shall be as specified in section 7. Unless otherwise specified, seeding or sprigging shall be accomplished within 2 days after final grading is completed and approved.

Fertilizer, lime, and other soil amendments shall be applied as specified in section 7. When specified, the fertilizer and soil amendments shall be thoroughly incorporated into the soil immediately following surface application.

The rate, amount, and kind of mulching or mesh shall be as specified in section 7. Mulches shall be applied uniformly to the designated areas. They shall be applied to areas seeded not later than 2 working days after seeding has been performed. Straw mulch material shall be stabilized within 24 hours of application using a mulch crimper or equivalent anchoring tool or by a suitable tackifier. When the mulch crimper or equivalent anchoring tool is used, it shall have straight blades and be the type manufactured expressly for and capable of firmly punching the mulch into the soil. Where the equipment can be safely operated, it shall be operated on the contour. Hand

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methods shall be used where equipment cannot safely operate to perform the work required.

The tackifier shall be applied uniformly over the mulch material at the specified rate, or it shall be injected into the mulch material as it is being applied. Mesh or netting stabilizing materials shall be applied smoothly, but loosely on the designated areas. The edges of these materials shall be buried or securely anchored using spikes or staples as specified in section 7.

The contractor shall maintain the mesh or netting areas until all work under the contract has been completed and accepted. Maintenance shall consist of the repair of areas damaged by water erosion, wind, fire, or other causes. Such areas shall be repaired to reestablish the intended condition and to the design lines and grades required by the contract. The areas shall be refertilized, reseeded, and remulched before the new application of the mesh or netting.

6. Measurement and payment For items of work for which specific unit prices are established in the contract, each area treated is measured as specified in section 7 and the area calculated to the nearest 0.1 acre. Payment for treatment is made at the contract unit price for the designated treatment, which will constitute full compensation for completion of the work.

When specified as an item of work, mesh or netting is measured to the nearest square yard of surface area covered and accepted. Payment is made at the contract unit price and will constitute full compensation for completion of the work.

Compensation for any item of work described in the contract, but not listed in the bid schedule is included in the payment for the item of work to which it is made subsidiary. Such items and the item(s) to which they are made subsidiary are identified in section 7.

NRCS - December 18, 2009 6-4

7. Items of work and construction details Items of work to be performed in conformance with this specification and the construction details are:

Bid Item 3 - Seeding and Mulching

(1) This item consists of preparing the seedbed and placing seed and mulch on all disturbed areas as marked and measured by the engineer before seeding. Payment will be as specified in section 6. Measurement will be by Global Positioning System (GPS) or equivalent equipment.

(2) The seeding operation shall be done within 7 days after final grading is completed and may be done in any month of the year except October.

(3) All equipment used on the slopes shall operate on or near the level contour of the slopes.

If necessary, a cable or some other means shall be used to prevent rutting of slopes during all seeding and mulching operations.

(4) Weeds shall be removed from the seeding area if they will interfere with any operation in the seeding process.

(5) All accessible areas shall be sown with a grass drill. The seed shall be placed 1/4 to 3/4 inch deep. The drill shall be equipped with coulter openers and depth bands spaced not more than 12 inches apart. All areas seeded with a drill shall be packed with a corrugated roller or similar equipment unless the drill is equipped with packer wheels.

Small, inaccessible areas or wet areas may be broadcast seeded. Broadcast areas shall be lightly harrowed or raked the same day the seed is spread.

(6) Mulch materials shall consist of good quality prairie (native) hay. For this site, there are

5.1 acres that will require 2 tons per acre of prairie hay. If mulch is applied on or after July 15, current year hay cutting shall be used. If mulch is applied before July 15, hay shall be no older than the previous year’s cutting. All mulch hay shall be visually inspected and approved by the inspector prior to application. The mulch shall be applied at a rate of 2 tons per acre. The mulch shall be anchored by using a straight, serrated disc weighted to press the mulch into the soil a minimum of 2 inches. Spacing between discs shall not exceed 12 inches. No area shall be mulched that cannot be anchored in the same day's operation. Weight tickets on each load of mulch shall be delivered to the inspector prior to the application. All areas seeded shall be mulched.

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(7) One seed mixture will be used for all disturbed areas. The seed mixture shall be as follows:

Mixture #1

Pounds per Acre Species in "Pure Live Seed" (PLS)

Aldous little bluestem, Schizachyrium scoparium 1.6 Kaw big bluestem, Andropogon gerardi 2.4 Osage indiangrass, Sorghastrum nutans 2.4 El Reno sideoats grama, Bouteloua curtipendula 2.4 Blackwell switchgrass, Panicum virgatum 0.9 Improved buffalograss, Buchloe dactyloides 0.5

Total Rate (PLS LBS.) 10.2

KS-NRCS NEH 642 - 5/01 8-1

Construction Specification 8—Mobilization and Demobilization

The work consists of the mobilization and demobilization of the contractor's forces and equipment necessary for performing the work required under the contract. It does not include mobilization and demobilization for specific items of work for which payment is provided elsewhere in the contract. Mobilization will not be considered as work in fulfilling the contract requirements for commencement of work.

2. Equipment and mater ial Mobilization shall include all activities and associated costs for transportation of 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;

and other items specified in section 4 of this specification.

Demobilization shall include all activities and costs for transportation of personnel, equipment, and supplies not required or included in the contract from the site; including the disassembly, removal, and site cleanup of offices, buildings, and other facilities assembled on the site specifically for this contract.

This work includes mobilization and demobilization required by the contract at the time of award.

If additional mobilization and demobilization activities and costs are required during the performance of the contract as a result of changed, deleted, or added items of work for which the contractor is entitled to an adjustment in contract price, compensation for such costs will be included in the price adjustment for the item or items of work changed or added.

3. Payment Payment will be made as the work proceeds, after presentation of paid invoices or documentation of direct costs by the contractor showing specific mobilization and demobilization costs and supporting evidence of the charges of suppliers, subcontractors, and others. When the total of such payments is less than the lump sum contract price, the balance remaining will be included in the final contract payment. Payment of the lump sum contract price for mobilization and demobilization will constitute full compensation for completion of the work.

Payment will not be made under this item for the purchase costs of materials having a residual value, the purchase costs of materials to be incorporated in the project, or the purchase costs of operating supplies.

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4. Items of work and construction details

a. Bid Item 4 - Mobilization and Demobilization

(1) This item consists of mobilization and demobilization of the contractor's forces and equipment necessary for the completion of the work.

(2) Transportation of any materials incorporated into the permanent works shall not be considered a mobilization item.

(3) The contractor will ensure that the Contracting Officer has notified the Kansas Division of Water Resources prior to starting any work on the site.

(4) Payment will constitute compensation for the following related subsidiary item:

Access Road Construction

b. Subsidiary Item - Access Road Construction

(1) This item consists of the construction, maintenance, and removal of the project access road.

(2) The road shall be constructed in the location shown on the drawings or as staked in the field.

(3) The road shall be constructed and maintained in a manner that minimizes potential for erosion and allows reasonable access to the site for the contractor, suppliers, contracting officer and his or her representatives, and the owner.

(3) No separate payment will be made for Access Road Construction. Compensation for

Access Road Construction will be included in the payment for Mobilization and Demobilization.

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Construction Specification 10—Water for Construction

The work consists of furnishing, transporting, measuring, and applying water as specified.

2. Facilities and equipment The contractor shall install and maintain access and haul roads and furnish, operate, and maintain all pumps, meters, piping, tanks, storage, and other facilities required to load, transport, store, distribute, and use construction water as specified.

These facilities shall be equipped with accurate, work dedicated meters; tanks of known volume;

or other devices that provide a correct measurement of water supplied. Meters shall be installed at the point of delivery into water hauling equipment or application system, such as sprinkler systems or flooding systems, as specified.

3. Dust abatement and haul road maintenance Water for dust abatement and haul road maintenance shall be applied to haul roads and other dust producing areas as needed to prevent air pollution or excessive dust (which causes impaired vision on trafficked roads and in work areas) and to maintain the roads in good condition for safe and efficient operation during periods of use. Roads that may be jointly used with the public and by the contractor's equipment shall have dust abatement provisions acceptable to the public entity that has road maintenance responsibility. Compensation for water used for dust abatement and haul road maintenance shall be as specified in section 8 of this specification.

4. Ear thfill, drainfill, and rockfill Water required for proper installation of earthfill, drainfill, and/or rockfill shall be used in the fill materials as specified in the applicable construction specification(s). Compensation for construction water used for earthfill, drainfill, and/or rockfill shall be as specified in section 8 of this specification.

5. Concrete, mor tar , and grout Water required in the mixing or curing of concrete, shotcrete, roller compacted concrete, or other portland cement mortar or grout shall meet the requirements of the applicable construction specifications and shall be used in conformance with those specifications. Payment for construction water used in these items is covered by the applicable concrete, mortar, or grout specification, or a combination of these.

6. Other construction requir ing water Water required and used for other construction activities under this contract, but not specifically covered by this specification shall be considered subsidiary to the item(s) of work that requires its use.

7. Measurement and payment For water items for which specific unit prices are established in the contract, the volume of water furnished and used in accordance with the specifications will be measured to the nearest 1,000 gallons.

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Payment for water and the cost associated with transportation, distribution, and application is made at the contract unit price. Such payment will constitute full compensation for completion of the work.

The measurement for payment will include all water used except as noted in sections 5, 6, and 8 of this specification. Measurement for payment will not include water that is used inappropriately or in excessive to need.

Compensation for any item of work described in the contract, but not listed in the bid schedule is items to which they are made subsidiary are identified in section 8 of this specification.

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8. Items of work and construction details

Bid Item 5 - Water

(1) This item consists of watering the various fill materials and haul roads necessary for the construction of the earthwork.

(2) The source and water rights for the quantity of water needed shall be the responsibility of the contractor.

(3) Water shall not be added to the foundation or fill materials without the approval of the engineer. The amount of water added shall be only that amount that shall provide a moisture content in the foundation or fill materials to be within the required range plus a reasonable amount to compensate for evaporation and other unavoidable losses.

(4) If water is applied to borrow areas, borrow operations shall not start until the applied water has been absorbed uniformly by the soil. The length of absorption time shall be approved by the engineer. The surfaces of the borrow area shall be maintained in a manner that shall prevent undue loss of moisture.

(5) Sources of earthfill materials which contain excessive moisture because of the addition of water under this specification shall not be abandoned in favor of other materials. Steps shall be taken by the contractor to reduce the moisture content of such materials.

(6) Water shall not be used for dust abatement or haul road maintenance without the approval of the engineer.

Water used on haul roads for maintenance or dust control shall be properly applied to prevent slippery, muddy, or other hazardous conditions.

Water shall be applied to other dust-producing areas as directed.

(7) Water delivered by pipeline shall be measured by a water meter placed in the pipeline as close as possible to the point of delivery.

Water delivered in tanks during regular working hours shall be measured at the point of delivery by water meters in the outlet works or by calibrated tanks. These methods of measurement shall not be used interchangeably; however, the engineer may authorize the change from one system to the other.

Means shall be provided by the contractor to check the accuracy of the water meters or the calibration of the tanks when requested by the engineer. Water meters shall have an accuracy of +3 percent of the true quantity.

(8) Payment will be as specified in Section 7.

KS-NRCS NEH 642 - 5/01, Rev. 8/09 21-1

Construction Specification 21—Excavation

The work shall consist of the excavation required by the drawings and specifications and disposal of the excavated materials.

2. Classification Excavation is classified as common excavation, rock excavation, or unclassified excavation in accordance with the following definitions.

Common excavation is defined as the excavation of all materials that can be excavated, transported, and unloaded using heavy ripping equipment and wheel tractor-scrapers with pusher tractors or that can be excavated and dumped into place or loaded onto hauling equipment by excavators having a rated capacity of one cubic yard or larger and equipped with attachments (shovel, bucket, backhoe, dragline, or clam shell) appropriate to the material type, character, and nature of the materials.

Rock excavation is defined as the excavation of all hard, compacted, or cemented materials that require blasting or the use of ripping and excavating equipment larger than defined for common excavation. The excavation and removal of isolated boulders or rock fragments larger than 1 cubic yard encountered in materials otherwise conforming to the definition of common excavation shall be classified as rock excavation. The presence of isolated boulders or rock fragments larger than 1 cubic yard is not in itself sufficient cause to change the classification of the surrounding material.

For the purpose of these classifications, the following definitions shall apply:

Heavy ripping equipment is a rear-mounted, heavy duty, single-tooth, ripping attachment mounted on a track type tractor having a power rating of at least 250 flywheel horsepower unless otherwise specified in section 10.

Wheel tractor-scraper is a self-loading (not elevating) and unloading scraper having a struck bowl capacity of at least 12 cubic yards.

Pusher tractor is a track type tractor having a power rating of at least 250 flywheel horsepower equipped with appropriate attachments.

Unclassified excavation is defined as the excavation of all materials encountered, including rock materials, regardless of their nature or the manner in which they are removed.

3. Blasting The transportation, handling, storage, and use of dynamite and other explosives shall be directed and supervised by a person(s) of proven experience and ability who is authorized and qualified to conduct blasting operations.

Blasting shall be done in a manner as to prevent damage to the work or unnecessary fracturing of the underlying rock materials and shall conform to any special requirements in section 10 of this

KS-NRCS NEH 642 - 5/01, Rev. 8/09 21-2 specification. When specified in section 10, the contractor shall furnish the engineer, in writing, a blasting plan before blasting operations begin.

4. Use of excavated mater ial To the extent they are needed, all suitable material from the specified excavations shall be used in the construction of required permanent earthfill or rockfill. The suitability of material for specific purposes is determined by the engineer. The contractor shall not waste or otherwise dispose of suitable excavated material.

5. Disposal of waste mater ials All surplus or unsuitable excavated materials are designated as waste and shall be disposed of at the locations shown on the drawings.

6. Excavation limits Excavations shall comply with OSHA Construction Industry Standards (29CFR Part 1926) Subpart P, Excavations, Trenching, and Shoring. All excavations shall be completed and maintained in a safe and stable condition throughout the total construction phase. Structure and trench excavations shall be completed to the specified elevations and to the length and width required to safely install, adjust, and remove any forms, bracing, or supports necessary for the installation of the work. Excavations outside the lines and limits shown on the drawings or specified herein required to meet safety requirements shall be the responsibility of the contractor in constructing and maintaining a safe and stable excavation.

7. Bor row excavation When the quantities of suitable material obtained from specified excavations are insufficient to construct the specified earthfills and earth backfills, additional material shall be obtained from the designated borrow areas. The extent and depth of borrow pits within the limits of the designated borrow areas shall be as specified in section 10 or as approved by the engineer.

Borrow pits shall be excavated and finally dressed to blend with the existing topography and sloped to prevent ponding and to provide drainage.

8. Overexcavation Excavation in rock beyond the specified lines and grades shall be corrected by filling the resulting voids with portland cement concrete made of materials and mix proportions approved by the engineer. Concrete that will be exposed to the atmosphere when construction is completed shall meet the requirements of concrete selected for use under Construction Specification 31, Concrete for Major Structures, or 32, Structure Concrete, as appropriate.

Concrete that will be permanently covered shall contain not less than five bags of cement per cubic yard. The concrete shall be placed and cured as specified by the engineer.

Excavation in earth beyond the specified lines and grades shall be corrected by filling the resulting voids with approved, compacted earthfill. The exception to this is that if the earth is to become the subgrade for riprap, rockfill, sand or gravel bedding, or drainfill, the voids may be filled with material conforming to the specifications for the riprap, rockfill, bedding, or drainfill.

Before correcting an overexcavation condition, the contractor shall review the planned corrective action with the engineer and obtain approval of the corrective measures.

KS-NRCS NEH 642 - 5/01, Rev. 8/09 21-3

9. Measurement and payment For items of work for which specific lump sum prices are established in the contract, the quantity of work will not be measured for payment. Payment for this item will be made at the contract lump sum price and will constitute full compensation for completion of the work.

Compensation for any item of work described in the contract, but not listed in the bid schedule is items to which they are made subsidiary are identified in section 10 of this specification.

NRCS - December 18, 2009 21-4

10. Items of work and construction details All excavations shall be constructed to the lines and grades shown on the drawings or as directed by the engineer. Foundation and abutment surfaces shall not be steeper than 2 horizontal to 1 vertical unless otherwise specified.

The use of excavated material shall be as specified in Section 4.

therefor are:

a. Subsidiary Item - Excavation, Borrow, Common

(1) This item shall consist of all common excavation required from the borrow areas for obtaining fill materials needed for construction of the permanent fill.

(2) All surface materials suitable for topsoiling shall be stripped from the borrow areas and placed in designated locations.

(3) The stripped area laid bare at one time shall be limited to the borrow pits being presently worked.

(4) The finished borrow area shall not be deeper than 2 feet above the principal spillway outlet channel bottom without the approval of the engineer. All borrow areas not covered by permanent water shall be graded and finished in a workmanlike manner to prevent the ponding of water.

All haul roads shall be constructed to accommodate the required hauling equipment.

When the need for 2-way traffic exists, a safe passing width shall be provided. All haul roads shall be continuously maintained dust-free and graded to eliminate unsafe traveling conditions.

(5) No separate payment will be made for Excavation, Common, Borrow.

Compensation for Excavation, Common, Borrow, will be included in the payment for Earthfill, Miscellaneous, and Earthfill, Lime-Treated, as appropriate.

b. Bid Item 6 - Excavation, Common

(1) This item shall consist of all common excavation which is required to construct and prepare the area to be occupied by lime-treated earthfill.

(2) Topsoil shall be stripped from the surface and stockpiled separately from other fill materials. The topsoil stripping depth shall be approximately 12 inches, but shall not include high plasticity clay as identified by the engineer.

(3) Excavated materials in excess of the amount required for earthfill operations or of an unsuitable nature shall be placed in the waste areas shown on the drawings.

(4) Measurement and payment will be as specified in Section 9.

NRCS - December 18, 2009 21-5

(5) Payment will constitute compensation for related subsidiary item(s):

(a) Protection of Excavated Surfaces - Construction Specification 21

(b) Disposal of Waste Materials - Construction Specification 21

(c) Earthfill, Miscellaneous - Construction Specification 23

c. Subsidiary Item - Excavation, Structure, Common

(1) This item shall consist of the common excavation required for restoring the outlet of the existing blanket drain. The existing pipe may not be visible at the surface, and thus may require excavation to locate it.

(2) Excess excavated materials shall be placed in the waste areas as directed by the engineer.

(3) No separate payment will be made for Excavation, Structure, Common.

Compensation for Excavation, Structure, Common, will be included in the payment for Drain Outlet Restoration.

d. Subsidiary Item - Protection of Excavated Surfaces

(1) This item shall consist of protecting the surfaces of all excavations upon which earthfill shall be placed.

(2) All necessary precautions shall be taken to preserve the excavated surfaces in the soundest possible condition. Excavated surfaces shall be protected from drying that may cause the formation of shrinkage cracks. Such protection may include but not be limited to (1) leaving a temporary cover of unexcavated material, (2) covering with mulch, (3) placing a protective coating of impervious sprayed material, (4) keeping moist by sprinkling with water, or (5) covering with sheets of plastic. The method of protection shall be approved by the engineer.

(3) No separate payment will be made for Protection of Excavated Surfaces.

Compensation for Protection of Excavated Surfaces will be included in the payment for Excavation, Common.

e. Subsidiary Item - Disposal of Waste Materials

(1) The disposal of waste materials shall be as specified in Section 5.

(2) Compaction of waste materials shall not be required.

(3) A minimum of 6 inches of topsoil shall be placed on all waste areas.

(4) The surfaces of waste areas shall be left in a neat and sightly condition and sloped to provide drainage.

(5) No separate payment will be made for Disposal of Waste Materials. Compensation for Disposal of Waste Materials in the waste areas and topsoiling and dressing the surfaces thereof will be included in the payment for Excavation, Common and Earthfill, Lime-Treated.

KS-NRCS NEH 642 - 5/01 23-1

Construction Specification 23—Earthfill

The work consists of the construction of earth embankments, other earthfills, and earth backfills required by the drawings and specifications.

Earthfill is composed of natural earth materials that can be placed and compacted by construction equipment operated in a conventional manner.

Earth backfill is composed of natural earth material placed and compacted in confined spaces or adjacent to structures (including pipes) by hand tamping, manually directed power tampers or vibrating plates, or their equivalent.

2. Mater ial All fill material shall be obtained from required excavations and designated borrow areas. The selection, blending, routing, and disposition of material in the various fills shall be subject to approval by the engineer.

Fill materials shall contain no frozen soil, sod, brush, roots, or other perishable material. Rock particles larger than the maximum size specified for each type of fill shall be removed prior to compaction of the fill.

The types of material used in the various fills shall be as listed and described in the specifications and drawings.

3. Foundation preparation Foundations for earthfill shall be stripped to remove vegetation and other unsuitable material or shall be excavated as specified.

Except as otherwise specified, earth foundation surfaces shall be graded to remove surface irregularities and shall be scarified parallel to the axis of the fill or otherwise…