Attachment_2_-_Construction_Specs__-_MYERS.pdf

Myers WRE List of Specifications June 2019 NRCS-South Carolina Richland County

ATTACHMENT 2 - CONSTRUCTION SPECS

MYERS WRE

Specification Number Title Number of Pages 2 Clearing and Grubbing 3 3 Structure Removal 2 5 Pollution Control 3 6 Seeding, Sprigging and Mulching for

Protective Cover

8 Mobilization and Demobilization 1 11 Removal of Water 3 21 Excavation 5 23 Earthfill 6 25 Rockfill 4 61 Rock Riprap 4 95 Geotextile 3

Material Specifications

Specification Number Title Number of Pages 523 Rock for Riprap 3 592 Geotextile 3

Myers WRE 2-1 June 2019 NRCS-South Carolina Richland County

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.

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

Myers WRE 3-2 June 2019 NRCS-South Carolina Richland County 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.

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.

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7. Items of work and construction details

a. Subsidiary Item, Clearing and Grubbing

(1) This item shall consist of clearing and grubbing any area necessary to complete the work for this contract.

(2) Trees may be felled either by cutting or by grubbing. Trees shall be felled in such a manner as to avoid damage to trees to be left standing.

(3) Existing channels, tributaries, waterways, and side ditches shall be kept free of materials resulting from the clearing operation at all times.

(4) All stumps, roots, and root clusters having a diameter of one inch or larger shall be grubbed out.

(5) The materials resulting from cleared and grubbed areas, including stumps shall be placed one layer (one tree) thick adjacent to the site and lodged between remaining trees to prevent movement during flood events.

(6) No separate payment will be made for Clearing and Grubbing. Compensation therefore will be considered as included in the contract unit price for the item with which it is associated.

- END OF CONSTRUCTION SPECIFICATION 2-

Myers WRE 3-1 June 2019 NRCS-South Carolina Richland County

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 Method 1—Each structure or structure part to be removed will be marked with stakes, flags, paint, or other suitable method.

Method 2—The area boundaries from which structures must be removed will be marked using stakes, flags, paint, or other suitable method. Structures to remain undisturbed or to be salvaged will be designated by special markings.

3. Removal Method 1—All structures designated for removal in the contract shall be removed to the specified extent and depth.

Method 2—Within the areas so marked, all visible and buried structures identified 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 materials 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 Method 1—For items of work for which specific unit prices are established by the contract, payment for the removal of each structure unit, except fences, is made at the contract unit price.

Fences removed or removed and salvaged are measured to the nearest linear foot. Payment for fence removal or removal and salvage is made at the contract unit prices for each type and size of fence.

Myers WRE 3-2 June 2019 NRCS-South Carolina Richland County

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.

Method 2—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.

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 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.

7. Items of work and construction details

a. Subsidiary Item, Pipe Removal

(1) This item shall consist of all work necessary to remove existing pipes listed on the drawings and dispose of them offsite.

(2) No separate payment will be made for pollution control work. Compensation therefore will be considered as included in contract unit price for all bid items in the contract.

- END CONSTRUCTION SPECIFICATION 5 –

Myers WRE 5-1 June 2019 NRCS-South Carolina Richland County

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. Material 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.

Myers WRE 5-2 June 2019 NRCS-South Carolina Richland County

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 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

Myers WRE 5-3 June 2019 NRCS-South Carolina Richland County 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.

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

a. Subsidiary Item, Pollution Control

(3) This item shall consist of all work necessary to control soil erosion and water and air pollution during the construction period.

(4) The contractor shall comply with all applicable statutes and regulations relating to the prevention and abatement of pollution on construction work. The contractor shall obtain all required permits and furnish the Contracting Officer a copy of any permits prior to commencing work.

(5) Equipment shall be properly maintained. Faulty equipment causing pollution shall not be operated. Washing down, fueling, or servicing of equipment shall be avoided where spillage or wash water can enter a stream or other body of water. Contractor is responsible for cleanup of spills. Cleanup of spills shall be performed according to guidance and methods approved by the SC Department of Health and Environmental Control (DHEC). Disposal of any contaminated materials shall be according to DHEC regulations or requirements.

(6) No separate payment will be made for pollution control work. Compensation therefore will be considered as included in contract unit price for all bid items in the contract.

- END CONSTRUCTION SPECIFICATION 5 –

Myers WRE 6-1 June 2019 NRCS-South Carolina Richland County

Construction Specification 6—Seeding, Sprigging, 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. 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 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.

Myers WRE 6-2 June 2019 NRCS-South Carolina Richland County

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.

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.

Myers WRE 6-3 June 2019 NRCS-South Carolina Richland County

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.

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

a. Bid Item 1, Seeding

(1) This item shall consist of seeding all disturbed areas after construction (aprox. 0.25 acre total)

(2) Seedbed Preparation: All disturbed areas to be seeded shall be packed with one pass of the construction equipment prior to seeding to provide a firm seedbed. After seeding, the area shall be packed again to press the seeds into the soil. At least one pass of the construction equipment will be required.

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(3) Liming: None

(4) Fertilizing: 200 lbs per acre 17-17-17.

(5) Mulching: Each side of each ramp will be covered with a single net excelsior erosion control blanket placed in the lowest area. Because these areas will be very narrow, a 4’ wide will be best. All other areas shall be mulched with wheat straw so that it provides about 50% cover.

Wheat straw is included in this bid item. Erosion control blanket will be paid for separately under Bid Item 2.

(6) Seeds shall be planted no deeper than 1/4 inch. Proper planting by broadcasting will leave 30% of the seed visible on top of the seedbed. A carrier (kitty litter, pelletized lime, cracked corn, sawdust, soy hulls, or sand) should be used to facilitate broadcasting seed. Care should be used to calibrate the spreader, to assure seeding is applied at the specified rate.

(7) All materials shall conform to the laws of South Carolina. The contractor shall furnish supplier's certifications of quality and quantity for all materials used.

(8) Materials shall be applied at the rates per acre as specified in the following seeding mix.

Mixture and Planting Rate of Seeded Species

Seeding % of Mix

Flowering Growth Habit

Rate Common Name Scientific Name (lb/A) Period Bluestem, Big (grass)-NC, SC, AL ecotype Andropogon gerardii 4 11% 0 0 0 0 P Bluestem, Little (grass) -NC ecotype

Schizachyrium scoparium (Andropogon scoparius) 2.5 13% 0 0 0 0 P

Indiangrass, Yellow (GA ecotype)

Sorghastrum nutans (Americus) 4 14% 0 0 0 0 P

Wild Rye, Virginia (grass) GA, SC ecotypes Elymus virginicus 7 14% 0 0 0 0 P

Wild Rye, Canada (grass) Elymus canadensis 7 11% 0 0 0 0 P

Deer Tongue Rosettegrass (grass)

Panicum clandestinum (Dichanthelium clandestinum) 1.5 12% 0 0 0 0 P

Indian Blanket/Blanketflower, Annual Gaillardia pulchella 2 9% sprg sum fall 0 A Panicum, Beaked or Fall (grass) -SC, GA, FL ecotypes

Panicum anceps (SC, FL, GA ecotype) 1 11% 0 0 0 0 P

Lovegrass, Purple Eragrostis spectabilis 0.2 4% 0 0 0 0 P Muhly Grass (Hairawn Muhly) -FL ecotype

Muhlenbergia capillaris

(FL) 0.1 3% 0 0 0 0 P

Total lb seed/acre: 29.3 Seed/sq foot 118.3

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Temporary Cover (to be added to the above mix) lbs/ac

Minimum germination rate

Minimum purity rate

Oats Avena sativa bulk 80% 75%

(9) Measurement and payment for seeding shall be by Method 2.

b. Bid Item 2, Excelsior Erosion Control Blanket

(1) This item shall consist of furnishing and installing an estimated 350 S.Y. of Single Net Excelsior Erosion Control Blanket. The blanket will be placed down each side of each ramp and shall be 4’ wide. Seeding shall be performed prior to placement of any erosion control blanket.

(2) Excelsior erosion control blankets shall consist of curled wood excelsior (Aspen) with 80% six inch or longer fiber length. The top side of blanket is covered with a photodegradable extruded plastic mesh.

(3) The excelsior blankets shall weigh a minimum of 0.72 lbs. per square yard. Staples and wood stakes shall be installed as recommended by the manufacturer. For the areas along the road that are very hard, it may be necessary to cut the staples to 3 or 4” lengths to allow for proper installation – staples that are not fully inserted into the ground to provide intimate contact with the ground and blanket are not allowed.

(4) All erosion control blanket shall have an even distribution of excelsior fibers over the entire area of the blanket. If areas of the blanket have thin spots or are sporadic in distribution of the excelsior, then the area that is in question shall be cut out or the entire roll shall be rejected at the Inspector’s discretion.

(5) Measurement and payment will be made by the number of square yards furnished and installed. Such payment will constitute full compensation for furnishing and installing the erosion control blanket including all pins, stakes, labor and all other items necessary and incidental to the completion of the work.

- END CONSTRUCTION SPECIFICATION 6 -

Myers WRE 8-1 June 2019 NRCS-South Carolina Richland County

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 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.

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

a. Bid Item 3, Mobilization and Demobilization

(1) This item shall consist of all mobilization and demobilization required to complete all items of the contract by the contractor, his workforce, equipment and agents.

- END CONSTRUCTION SPECIFICATION 8 -

Myers WRE 11-1 June 2019 NRCS-South Carolina Richland County

Construction Specification 11—Removal of Water

The work consists of the removal of surface water and ground water as necessary to perform the construction requiredbythecontract inaccordancewiththespecifications.Itshall include:(1) constructing, installing,build- ing, 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 Thecontractorshall install,maintain,andoperateallcofferdams,channels,flumes,sumps,andall other tempo- rarydiversionandprotectiveworksneededtodivert streamflowandother surface water throughoraround the constructionsite.Controlofsurfacewatershallbecontinuousduring theperiodthatdamagetoconstructionwork couldoccur.Unlessotherwisespecifiedand/or approved, thediversionoutlet shallbe into thesamedrainageway thatthewaterwouldhave reachedbeforebeingdiverted.

Thecontractorshallfurnishthecontractingofficer, inwriting,aproposedplanfordiverting surfacewaterbefore beginninganyconstructionactivitiesforwhichadiversionisrequired,unless waivedinsection8ofthisspecifica- tion.Acceptanceof thisplanor thewaivingof theplan requirementwillnot relieve thecontractorof theresponsi- bilitiesrelatedtothisactivityduring theprocessofcompletingtheworkasspecified.

3. Dewatering the construction site Foundations,cutoff trenches,andallotherpartsof theconstructionsiteshallbedewateredandkept freeofstand- ingwater andmuddyconditionsas necessary for the proper executionof the work.

Thecontractor shall furnish, install,operate,andmaintainalldrains,sumps,pumps,casings,well points,andallotherequipmentrequiredto properlydewaterthesiteasspecified.Dewatering systemsthatcausealossofsoilfinesfromthefoundationareas willnotbepermitted.

Thecontractorshallfurnishthecontractingofficer,inwriting,aproposedplanfordewatering beforecommencing withanyconstructionactivityforwhichdewateringmayberequired,unless waivedinsection8ofthisspecifica- tion.Acceptanceof thisplanor thewaivingof theplan requirementwill not relieve thecontractorof theresponsi- bilitiesforcompletingthespecified work.

4. Dewatering borrow areas Thecontractorshallmaintainallborrowareasfreeofsurfacewaterorotherwiseprovidefor timelyandeffective removalofsurfaceandsubsurfacewater thataccumulateswithin theborrow area,unlesswaivedinsection8of thisspecification.Borrowmaterial shallbeprocessedas necessarytoachieveproperanduniformmoisturecon- tentatthetimeofplacement.

If pumping to dewater borrow areas is included as a bid itemof work in the bid schedule, each pump discharge pipeshallbeequippedwithawatermeter.Themetershallbesuchthatthe measuredquantityofwaterisaccurate within3percentof thetruequantity.Thecontractorshall providenecessarysupport toperformaccuracytestsof thewatermeterwhenrequestedbythe contractingofficer.

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5. Erosion and pollution control Removal of water fromthe construction site, including the borrowareas, shall beaccomplished so that erosion and the transporting of sediment and other pollutants are minimized. Dewatering activities shall be accomplished inamannerthatthewatertablewaterqualityisnotaltered.

Pollutioncontrolactivitiesshallnotconflictwiththe requirementsofConstructionSpecification 5,PollutionControl,ifitisapartofthiscontract.

6. Removal of temporary works When temporary works are no longer needed, the contractor shall remove and return the area to a condition similar to thatwhichexistedbeforeconstruction.Areaswhere temporaryworks were locatedshall begradedfor sightlyappearancewithnoobstructiontonatural surface waterflowsor theproper functioningandaccess to the worksofimprovementinstalled.The contractorshallexerciseextremecareduringtheremovalstagestominimize thelossofsoil sedimentanddebristhatwastrappedduringconstruction.

Pipes, casings, and any other material used to dewater the site shall be removed from temporary wells.Thewells shallbefilledtogroundlevelwithcleangravelorothersuitablematerialapproved by the contracting officer. The contractor shall exercise extreme care to prevent pollution of the groundwaterbytheseactions.

7. Measurement and payment Method 1—Itemsofworklisted in thebidschedule for removalofwater,divertingsurfacewater, anddewatering constructionsitesandborrowareasarepaidforat thecontract lumpsumprices.

Suchpaymentwillconstitutefull compensationforall labor,equipment, tools,andallother items necessaryandincidental to thecompletionof the work.

Method 2—Items of work listed in the bid schedule for removal of water, diverting surface water, dewatering constructionsites,anddewateringborrowareasarepaidforat thecontract lumpsumprices.Suchpaymentwill constitute full compensation for furnishing, installing, operating, and maintaining the necessary trenches, drains, sumps,pumps,andpipingandforall labor,equipment,tools,andallotheritemsnecessaryandincidentaltothe completionof the work.Theexceptionis that additionalpayment forpumpingtodewaterborrowareasand the removalofwaterwillbemadeasdescribedinthefollowingparagraph.

Ifpumpingtodewaterborrowareas is acontractbid item, payment ismadeat thecontractunit price, whichshall bethepriceper1,000gallonsshowninthebidschedule.Suchpaymentwillconstitute fullcompensationforpump- ingonly.Compensationforequipmentandpreparationandforother costsassociatedwithpumpingis includedin thelumpsumpaymentforremovalofwaterorthelump sumpaymentfordewateringtheborrowareas.Payment is madeonlyforpumpingthat isnecessary todewaterborrowareas thatcannotbeeffectivelydrainedbygravityor thatmust have the water table lowered to be usableasa suitable borrowsource.Pumpingfor otherpurposes will notbe includedforpaymentunderthisitem.

AllMethods—Thefollowingprovisionsapplytoallmethodsofmeasurementandpayment.

Compensationforany itemof workdescribed in thecontract, but not listed in thebidschedule is included in the payment for the contract lineitemtowhichit ismadesubsidiary.Suchitemsandthe itemstowhichtheyaremadesubsidiaryareidentified insection8of this specification.

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8. Items of work and construction details

a. Subsidiary Item, Removal of Water

(1) This item shall consist of all work and equipment necessary and incidental for the removal of surface and ground water for the construction of all work under this contract. It also includes all materials and work needed for working in this type of wet environment, such as mats for excavators and other equipment, four-wheel drive vehicles and any other items needed due to wet conditions.

(2) No separate payment will be made for removal of water. Compensation therefore will be considered as included in contract unit price for all bid items in the contract.

- END CONSTRUCTION SPECIFICATION 11 –

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Construction Specification 21—Excavation

1. Scope 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 specification. When specified in section 10, the contractor shall furnish the engineer, in writing, a blasting plan before blasting operations begin.

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4. Use of excavated material Method 1—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.

Method 2—Suitable material from the specified excavations may be used in the construction of required earthfill or rockfill. The suitability of material for specific purposes is determined by the engineer.

5. Disposal of waste materials Method 1—All surplus or unsuitable excavated materials are designated as waste and shall be disposed of at the locations shown on the drawings.

Method 2—All surplus or unsuitable excavated materials are designated as waste and shall be disposed of by the contractor at sites of his own choosing away from the site of the work. The disposal shall be in an environmentally acceptable manner that does not violate local rules and regulations.

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. Borrow 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

Myers WRE 21-3 June 2019 NRCS-South Carolina Richland County 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.

9. Measurement and payment For items of work for which specific unit prices are established in the contract, the volume of each type and class of excavation within the specified pay limits is measured and computed to the nearest cubic yard by the method of average cross-sectional end areas or by…