Construction_ _Material_Specifications_Taylor.pdf

List of Specifications John H. Taylor WRP

Rutherford County, Tennessee

CONSTRUCTION SPECIFICATIONS

SPEC. NO. DESCRIPTION

2 Clearing and Grubbing

5 Pollution Control

6 Seeding, Sprigging, and Mulching

7 Construction Surveys

8 Mobilization and Demobilization

11 Removal of Water

21 Excavation

23 Earthfill

26 Topsoiling

45 Plastic Pipe

61 Rock Riprap

95 Geotextile

MATERIAL SPECIFICATIONS

SPEC. NO. DESCRIPTION

523 Rock for Riprap

547 Plastic Pipe

592 Geotextile

SPECIFICATIONS APPROVED:

Civil Engineer Date

5-10-16

(210-VI-NEH, May 2001) 2-1

CONSTRUCTION SPECIFICATION 2—CLEARING 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. CLEARING 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.

2-2 (210-VI-NEH, May 2001)

6. MEASUREMENT AND PAYMENT

Method 1—For items of work for which specific units prices are established in the contract, the cleared and grubbed area is measured to the nearest 0.1 acre. Payment for clearing and grubbing is made for the total area within the designated limits at the contract unit price. Such payment will constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 2—For items of work for which specific unit prices are established in the contract, the length of the cleared and grubbed area is measured to the nearest full station (100 feet) along the line designated on the drawing or identified in the specifications. Payment for clearing and grubbing is made for the total length within the designated limits at the contract unit price. Such payment will constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 3—For items of work for which specific unit prices are established in the contract, each tree, stump, and snag having a diameter of 4 inches or larger and each log having a diameter of 4 inches or larger and a length of 10 feet are measured before removal. The size of each tree and snag is determined by measuring its trunk at breast height above the natural ground surface. The size of each log is determined by measuring the butt and by measuring its length from butt to tip. The size of each stump is measured at the top. Diameter is determined by dividing the measured circumference by 3.14.

Payment for clearing and grubbing of each tree, stump, and snag having a diameter of 4 inches or larger and each log having a diameter of 4 inches or larger and a length of 10 feet or larger is made at the contract unit price for its size designation as determined by the following schedule:

Measured diameter Size designation

(in) (in)

4 to 8 6 8 to 12 10 12 to 24 18 24 to 36 30 36 to 60 48 Over 60 60

The sum of such payments shall constitute full compensation for clearing and grubbing (including the clearing and grubbing of smaller trees, stumps, snags, logs, brush, shrubs, and roots), applicable permits and associated fees, and rubbish removal. Such payment shall constitute full compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

Method 4—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 compensation for all labor, equipment, tools, and all other items necessary and incidental to the completion of the work.

(210-VI-NEH, May 2001) 2-3

All Methods—The following provisions apply to all methods of measurement and payment.

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.

2-4 NRCS – 04/16

TN – Taylor WRP

7. ITEMS OF WORK AND CONSTRUCTION DETAILS

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

(1) This item consists of all work necessary to prepare the site for grading operations.

(2) The areas to be cleared and grubbed are within work limit lines and shall be marked in the field by the Engineer. The Contractor shall clear and grub designated areas as follows:

(a) In the level section, all woody growth greater than one (1) inch in diameter shall be cleared and grubbed.

(b) Along the ditch plug centerline, all woody vegetation within approximately 20 ft of the proposed toe of slope shall be cleared and grubbed.

(c) All woody vegetation within the footprint of Drain 1 and Drain 2 shall be cleared and grubbed.

(3) In Section 5, Disposal, all stumps and woody debris shall be collected, transported, and piled at areas marked on-site by the COR. Absolutely NO woody debris material from clearing and grubbing activities shall be hauled off-site for disposal. Burning of woody debris will not be allowed.

(4) In Section 6, Measurement and Payment, no separate payment will be made for this Subsidiary

Item. Compensation will be included in the payment for Bid Item 6, Excavation, common.

(210-VI-NEH, January 2014) 5–1

CONSTRUCTION SPECIFICATION 5—POLLUTION CONTROL

1. SCOPE

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.

The following BioPreferred® product categories are applicable to this specification: — mulch and compost materials erosion control materials fertilizers dust suppressants agricultural spray adjuvants

2. MATERIAL

Silt fence shall conform to the requirement of Materials Specification 592, Geotextile. All other 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 silt fences trap sediment from areas of limited runoff.

Sediment filters shall be properly anchored to prevent erosion under or around them. Silt fences shall be installed and maintained in accordance with ASTM D6462. These filters are temporary and shall be

5–2 (210-VI-NEH, January 2014) 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.

4. CHEMICAL POLLUTION

The contractor shall provide watertight tanks or barrels or construct a sump sealed with plastic sheets to collect and temporarily contain 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. Pollutants shall be disposed of in accordance with appropriate state and Federal regulations.

At the completion of the construction work, tanks, barrels, and 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.

(210-VI-NEH, January 2014) 5–3

7. MEASUREMENT AND PAYMENT

Method 1—For items of work for which specific unit prices are established in the contract, each item is measured to the nearest unit applicable. Payment for each item is made at the contract unit price for that item. For water or chemical suppressant items used for dust control for which items of work are established in section 8 of this specification, measurement for payment will not include water or chemical suppressants that are used inappropriately or excessive to need. Such payment will constitute full compensation for the completion of the work.

Method 2—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds and supported by invoices presented by the contractor that reflect actual costs. If the total of all progress payments is less than the lump sum contract price for this item, the balance remaining for this item will be included in the final contract payment. Payment of the lump sum contract price will constitute full compensation for completion of the work.

Method 3—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.

All Methods—The following provisions apply to all methods of measurement and payment.

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.

5–4 NRCS – 04/16

8. ITEMS OF WORK AND CONSTRUCTION DETAILS

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

(1) This item of work shall consist of performing work to control erosion and minimize the production of sediment and other pollutants to water and air.

(2) Silt fence shall conform to the requirement of Materials Specification 592, Geotextile. All other material furnished for pollution control measures must be approved by the COR.

(3) In Section 4, Chemical pollution, all fueling and oiling operations shall be conducted in such a manner as to avoid the introduction of contaminants into the environment. All waste fuel and oils shall be disposed of off-site as allowed by applicable state and/or federal laws.

Sanitary facilities shall be removed and the location graded and restored to pre-construction conditions.

(4) All materials encountered during construction that have a possibility of contaminating the environment such as asphalt, chemical containers, creosote poles, batteries, used tires, etc., shall be removed and disposed of off-site as allowed by applicable local, state and/or federal laws.

(5) In Section 7, Measurement and Payment, no separate payment will be made for this

Subsidiary Item. Compensation will be included in the payment for Bid Item 6, Excavation, common.

(210-VI-NEH, January 2014) 6–1

CONSTRUCTION SPECIFICATION 6—SEEDING, SPRIGGING, AND MULCHING

1. SCOPE

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.

The following BioPreferred® product categories are applicable to this specification:

— mulch and compost materials

— erosion control materials

— fertilizers

— agricultural spray adjuvants

2. MATERIAL

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

6–2 (210-VI-NEH, January 2014) 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 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, SPRIGS, 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, SPRIGGING, FERTILIZING, 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.

(210-VI-NEH, January 2014) 6–3

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 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

Method 1—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.

Method 2—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 is made at the contract lump sum price for the item and will constitute full compensation for the completion of the work.

Method 3—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds. Progress payments will be determined as specified in section 7. Payment of the lump sum contract price will constitute full compensation for completion of the work.

All Methods—The following provisions apply to all methods of measurement and payment.

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.

6–4 NRCS – 04/16

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

a. Bid Item 2, Seeding and Straw Mulching – Unit: acres [AC] of work

(1) This item consists of seedbed preparation, seeding, and straw mulching to establish temporary and permanent vegetation in areas disturbed by the work which lie outside the pool area of the impoundment or above the normal pool elevation inside the impoundment. This item of work does not include vegetating Drain 1. Disturbed areas inside the pool area below the normal pool elevation will not be vegetated.

(2) Construction work shall be scheduled so that vegetation may be accomplished for individual areas as the work progresses. Vegetation shall be applied within two (2) days after final grading, unless otherwise approved by the COR.

(3) All ruts created by construction of the project shall be filled in and left in a smooth condition prior to seedbed preparation.

(4) All seed shall conform to the material requirements contained in the current Tennessee Seed Law. No seed shall be less than 80% pure live seed of the current year. No “Below Standard” seed will be accepted.

(5) Areas designated for seeding shall be prepared in accordance with Section 4 of this specification.

(6) All debris, roots, rocks, and any objects that will interfere with the establishment of vegetation shall be removed prior to seeding as specified in Construction Specification 2, Clearing and Grubbing.

(7) Inoculants shall be required on all legumes and shall conform to the material requirements contained in the current Tennessee Seed Law

(8) In Section 3, Seeding Mixtures, Sod, Sprigs and Dates of Planting, temporary and perennial vegetation will be seeded by the contractor. Seed mixes shall be utilized within the dates as shown below in Table 1.

NRCS – 04/16 6–5

TABLE 1 – PLANTING DATE SPECIFICATION

PLANTING DATES

REQUIRED SEED MIXES

(SEE TABLE 2 FOR SEED MIX SPECIFICATIONS)

Temporary Perennial RESTRICTIONS

July 15 – August 15 B A ---

August 16 – November 15 C A ---

(9) In Section 3, Seeding Mixtures, Sod, Sprigs and Dates of Planting, Seed mixes shall be as shown in Table 2.

TABLE 2 – SEED MIX SPECIFICATIONS

MIX POUNDS PER ACRE

(Pure Live Seed)

SEED SPECIES

A

8 Switchgrass “Cave in Rock”

5 Virginia Wild Rye

4 Redtop

5 Red Clover/Alsike clover

B 20 Buckwheat

20 Millet

C 90 Winter Wheat

(10) Seeding and mulching by methods other than described in this specification shall be submitted to the COR for approval prior to application.

(11) Prior to the commencement of the seeding operation, the Contractor and NRCS shall verify that the placing of topsoil, smooth grading and compaction requirements have been completed in accordance with Construction Specification 26, Topsoiling.

(12) In Section 5, Seeding, Sprigging, Mulching, and Stabilizing, immediately after broadcasting seed, the seed shall be partially covered by cultipacker, drag, or other methods approved by

6–6 NRCS – 04/16

the COR. The seed covering operation will not be required if the seed is applied with a hydraulic seeding machine. All seeding methods shall result in an even distribution of seed over the disturbed areas. Cover the seeded areas with wheat straw mulch at a rate of 4,000 lbs per acre.

On sloped areas too steep or confined for normal farm equipment operation, the entire area shall be treated with tracked equipment operated up and down the slope in such a manner that the indented cleat portion of the tread marks are approximately on the contour of the slope and cover the entire sloped surface, half the seed applied, mulch applied, track the entire area as described above, apply the remaining seed, and track the entire area as described above. If the slope is too steep for tracking by equipment, the Contractor shall choose to treat the entire area with a hydraulic seeding machine or by hand.

(13) In Section 6, Measurement and Payment, payment shall be made by Method 1. Such compensation will constitute full payment for all items included in Bid Item 2, Seeding and Straw Mulching.

b. Bid Item 3, Seeding and Erosion Control Blanket – Unit: square yards [SY] of work

(1) This item consists of the seedbed preparation, seeding, and the installation of erosion control blanket to establish temporary and permanent vegetation in Drain 1.

(2) Construction work shall be scheduled so that vegetation may be accomplished for individual areas as the work progresses. Vegetation shall be applied within two (2) days after final grading, unless otherwise approved by the COR.

(3) All ruts created by construction of the project shall be filled in and left in a smooth condition prior to seedbed preparation.

(4) All seed shall conform to the material requirements contained in the current Tennessee Seed Law. No seed shall be less than 80% pure live seed of the current year. No “Below Standard” seed will be accepted.

(5) Areas designated for seeding shall be prepared in accordance with Section 4 of this specification.

(6) All debris, roots, rocks, and any objects that will interfere with the establishment of vegetation shall be removed prior to seeding as specified in Construction Specification 2, Clearing and Grubbing.

(7) Inoculants shall be required on all legumes and shall conform to the material requirements contained in the current Tennessee Seed Law.

(8) In Section 3, Seeding Mixtures, Sod, Sprigs and Dates of Planting, temporary and perennial vegetation will be seeded by the contractor. Seed mixes shall be utilized within the dates as shown below in Table 1.

NRCS – 04/16 6–7

TABLE 1 – PLANTING DATE SPECIFICATION

PLANTING DATES

REQUIRED SEED MIXES

(SEE TABLE 2 FOR SEED MIX SPECIFICATIONS)

Temporary Perennial RESTRICTIONS

July 15 – August 15 B A ---

August 16 – November 15 C A ---

(9) In Section 3, Seeding Mixtures, Sod, Sprigs and Dates of Planting, Seed mixes shall be as shown in Table 2.

TABLE 2 – SEED MIX SPECIFICATIONS

MIX POUNDS PER ACRE

(Pure Live Seed)

SEED SPECIES

A

8 Switchgrass “Cave in Rock”

5 Virginia Wild Rye

4 Redtop

5 Red Clover/Alsike clover

B 20 Buckwheat

20 Millet

C 90 Winter Wheat

(10) Seeding and mulching by methods other than described in this specification shall be submitted to the COR for approval prior to application.

(11) Prior to the commencement of the seeding operation, the Contractor and NRCS shall verify that the placing of topsoil, smooth grading and compaction requirements have been completed in accordance with Construction Specification 26, Topsoiling.

(12) In Section 5, Seeding, Sprigging, Mulching, and Stabilizing, immediately after broadcasting seed, the seed shall be partially covered by cultipacker, drag, or other methods approved by the COR. The seed covering operation will not be required if the seed is applied with a

6–8 NRCS – 04/16

hydraulic seeding machine. All seeding methods shall result in an even distribution of seed over the disturbed areas. Cover the area in Drain 1 with erosion control blanket. See the drawings for placement instructions and specifications.

On sloped areas too steep or confined for normal farm equipment operation, the entire area shall be treated with tracked equipment operated up and down the slope in such a manner that the indented cleat portion of the tread marks are approximately on the contour of the slope and cover the entire sloped surface, half the seed applied, mulch applied, track the entire area as described above, apply the remaining seed, and track the entire area as described above. If the slope is too steep for tracking by equipment, the Contractor shall choose to treat the entire area with a hydraulic seeding machine or by hand.

(13) A biodegradable, natural fiber filled erosion control blanket shall be used for all mulching of areas seeded under this bid item.

(14) The erosion control blanket shall meet requirements established by the Erosion Control Technology Council (ECTC) Specification and the US Department of Transportation, Federal Highway Administration’s (FHWA) Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects, FP-03 Section 713.1, Temporary Rolled Erosion Control Products, Type 3B. See the attached Reference.

(15) Installation and anchoring of the erosion control blanket shall follow the instructions on the drawings.

(16) In Section 6, Measurement and Payment, payment shall be made by Method 1. Final surface area covered is the payable measurement, not total blanket used to cover that area. Such compensation will constitute full payment for all items included in Bid Item 3, Seeding and Erosion Control Blanket.

(210-VI-NEH, January 2009)

7–1

CONSTRUCTION SPECIFICATION 7—CONSTRUCTION SURVEYS

1. SCOPE

The work consists of performing all surveys, measurements, and computations required by this specification.

2. EQUIPMENT AND MATERIAL

Equipment for construction surveys shall be of a quality and condition to provide the required accuracy.

The equipment shall be maintained in good working order and in proper adjustment at all times.

Records of repairs, calibration tests, accuracy checks, and adjustments shall be maintained and be available for inspection by the engineer. Equipment shall be checked, tested, and adjusted as necessary in conformance with manufacturer's recommendations.

Material is field notebooks, stakes, templates, platforms, equipment, spikes, steel pins, tools, and all other items necessary to perform the work specified.

3. QUALITY OF WORK

All work shall follow recognized professional practice and the standards of the industry unless otherwise specified in section 9 of this specification. The work shall be performed to the accuracy and detail appropriate for the type of job. Notes, sketches, and other data shall be complete, recorded neatly, legible, reproducible and organized to facilitate ease in review and allow reproduction of copies for job documentation. Survey equipment that requires little or no manual recording of field data shall have survey information documented as outlined in section 9 of this specification.

All computations shall be mathematically correct and shall include information to identify the bid item, date, and who performed, checked, and approved the computations. Computations shall be legible, complete, and clearly document the source of all information used including assumptions and measurements collected.

If a computer program is used to perform the computations, the contractor shall provide the engineer with the software identification, vendor's name, version number, and other pertinent data before beginning survey activities. Computer generated computations shall show all input data including values assigned and assumptions made.

The elevations of permanent and temporary bench marks shall be determined and recorded to the nearest 0.01 foot. Differential leveling and transit traverses shall be of such precision that the error of vertical closure in feet shall not exceed plus or minus 0.1 times the square root of the traverse distance in miles. Linear measurements shall be accurate to within 1 foot in 5,000 feet, unless otherwise specified in section 9 of this specification. The angular error of closure for transit traverses shall not exceed 1 minute times the square root of the number of angles turned.

The minimum requirements for placing slope stakes shall be at 100-foot stations for tangents, as little as 25 feet for sharp curves, breaks in the original ground surface and at any other intermediate stations necessary to ensure accurate location for construction layout and measurement. Slope stakes and cross sections shall be perpendicular to the centerline. Significant breaks in grade shall be determined for

7–2 cross sections. Distances shall be measured horizontally and recorded to the nearest 0.1 foot. Side shots for interim construction stakes may be taken with a hand level.

Unless otherwise specified in section 9 of this specification, measurements for stationing and establishing the location of structures shall be made to the nearest 0.1 foot.

Elevations for concrete work, pipes, and mechanical equipment shall be determined and recorded to the nearest 0.01 foot. Elevations for earth work shall be determined and recorded to the nearest 0.1 foot.

4. PRIMARY CONTROL

The baselines and bench marks for primary control, necessary to establish lines and grades needed for construction, are shown on the drawings and have been located on the job site.

These baselines and bench marks shall be used as the origin of all surveys, layouts, and measurements to establish construction lines and grades. The contractor shall take all necessary precautions to prevent the loss or damage of primary control points. Any stakes or control points lost or damaged by construction activity will be reestablished by the contractor or at contractor expense.

5. CONSTRUCTION SURVEYS

Before work starts that requires contractor performed surveys, the contractor shall submit in writing for the engineer's review: the name, qualifications, and experience of the individuals to be assigned to the survey tasks.

Method 1—Contractor performed surveys shall include:

• checking and any supplemental or interim staking

• performing quantity surveys, measurements, and computations for progress payment

• other surveys as described in section 9 of this specification

Method 2—Contractor performed surveys shall consist of all work necessary for:

• establishing line and grade for all work

• setting slope stakes for all work

• checking and any supplemental or interim staking

• establishing final grade stakes

• performing quantity surveys, measurements, and computations for progress payment

• other surveys as described in section 9 of this specification

Method 3—Contractor performed surveys shall consist of all work necessary for:

• establishing line and grade for all work

• setting slope stakes for all work

• checking and any supplemental or interim staking

7–3

• establishing final grade stakes

• performing quantity surveys, measurements, and computations for progress payments

• performing original (initial) and final surveys for determinations of final quantities

• other surveys as described in section 9 of this specification.

6. STAKING

The construction staking required for the item shall be completed before work on any item starts.

Construction staking shall be completed as follows or as otherwise specified in section 9 of this specification:

Clearing and grubbing—The boundary of the area(s) to be cleared and grubbed shall be staked or flagged at a maximum interval of 200 feet, closer if needed, to clearly mark the limits of work. When contractor staking is the basis for determining the area for final payment, all boundary stakes will be reviewed by the engineer before start of this work item.

Excavation and fill—Slope stakes shall be placed at the intersection of the specified slopes and ground line. Slope stakes and the reference stakes for slopes shall be marked with the stationing, required cut or fill, slope ratio, and horizontal distance from the centerline or other control line. The minimum requirements for placing slope stakes is outlined in section 3, Quality of work.

Structures—Centerline and offset reference line stakes for location, alignment, and elevation shall be placed for all structures.

7. RECORDS

All survey data shall be recorded in fully identified standard hard-bound engineering survey field notebooks with consecutively numbered pages. All field notes and printed data shall include the purpose or description of the work, the date the work was performed, weather data, sketches, and the personnel who performed and checked the work. Electronically generated survey data and computations shall be bound, page numbered, and cross referenced in a bound field notebook containing the index for all survey activities. All work shall follow recognized professional practice.

The construction survey records shall be available at all times during the progress of the work for examination and use by the engineer and when requested, copies shall be made available. The original field notebooks and other records shall be provided to and become the property of the owner before final payment and acceptance of all work.

Complete documentation of computations and supporting data for progress payments shall be submitted to the engineer with each invoice for payment as specified in section 9 of the specification.

When the contractor is required to conduct initial and final surveys as outlined in section 5, Construction Surveys, notes shall be provided as soon as possible after completion to the engineer for the purpose of determining final payment quantities.

8. PAYMENT

Method 1—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds, after presentation of correct and accurate invoices by the contractor

7–4 showing related costs and evidence of the charges of suppliers, subcontractors, and others for supplies furnished and work performed. Invoices for the total amount of the contract price will not be accepted until all surveys are complete and required documentation has been determined complete. If the total of such payments is less than the lump sum contract price for this item, the unpaid balance will be included in the final contract payment. Payment of the lump sum contract price will constitute full compensation for completion of all work under the bid item.

Method 2—For items of work for which lump sum prices are established in the contract, payment is made as the work proceeds with progress payment amounts determined as a percentage of the total work planned as projected from the contractor's approved construction schedule. Payment of the lump sum contract price will constitute full compensation for completion of all work under this bid item.

All Methods—Payment will not be provided under this item for the purchase price of materials or equipment having a residual value.

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 item to which they are made subsidiary are identified in section 9 of this specification.

NRCS – 04/16

7–5

9. ITEMS OF WORK AND CONSTRUCTION DETAILS

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

(1) This item of work consists of performance of construction survey work necessary to build the structures to the lines and grades shown on the Engineering Plans.

(2) In Section 5, Construction Surveys, Method 1 shall apply. NRCS will stake out the centerline and offsets for each part of the structure, as well as the designated spoil areas. Contractor is responsible for making elevation, grade, and slope measurements during construction. NRCS will survey pay limits of bid items and final surface, including extents of seeding and mulching.

(3) In Section 8, Measurement and Payment, no separate payment will be made for this Subsidiary

(210-VI-NEH, May 2001) 8-1

CONSTRUCTION SPECIFICATION 8—MOBILIZATION AND DEMOBILIZATION

1. SCOPE

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 MATERIAL

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.

8-2 NRCS – 04/16

4. 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, Mobilization and Demobilization: Unit: Job [JOB]

(1) This item shall consist of the mobilization and demobilization of the Contractor's forces and equipment necessary to perform the work required under the contract. This item shall also include all work required to provide and maintain temporary construction access to the site.

(2) All roads, culverts, bridges, fences, structures, etc., shall be protected from damage during the contract period.

(3) Access shall be as specified on the drawings. All access routes shall be restored by the contractor to a condition equal to or better than the condition prior to the commencement of work under this contract.

(4) In Section 3, Payment, payment shall be made by contracted lump sum payment with partial payments as work proceeds as described in Section 3 of this specification. Such compensation will constitute full payment for all items included in Bid Item 1, Mobilization and Demobilization.

(210-VI-NEH, May 2001) 11-1

CONSTRUCTION SPECIFICATION 11—REMOVAL OF WATER

1. SCOPE

The work consists of the removal of surface water and ground water as necessary to perform the construction required by the contract in accordance with the specifications. It shall include: (1) constructing, installing, building, and maintaining all necessary temporary water containment facilities, channels, and diversions; (2) furnishing, installing, and operating all necessary pumps, piping, and other facilities and equipment; and (3) removing all such temporary works and equipment after their intended function is no longer required.

2. DIVERTING SURFACE WATER

The contractor shall install, maintain, and operate all cofferdams, channels, flumes, sumps, and all other temporary diversion and protective works needed to divert streamflow and other surface water through or around the construction site. Control of surface water shall be continuous during the period that damage to construction work could occur. Unless otherwise specified and/or approved, the diversion outlet shall be into the same drainageway that the water would have reached before being diverted.

The contractor shall furnish the contracting officer, in writing, a proposed plan for diverting surface water before beginning any construction activities for which a diversion is required, unless waived in section 8 of this specification. Acceptance of this plan or the waiving of the plan requirement will not relieve the contractor of the responsibilities related to this activity during the process of completing the work as specified.

3. DEWATERING THE CONSTRUCTION SITE

Foundations, cutoff trenches, and all other parts of the construction site shall be dewatered and kept free of standing water and muddy conditions as necessary for the proper execution of the work.