SectJ-Atch3_Construction-MaterialSpecifications_S-11-0003-02_12sep11.pdf

Mark.Luckritz Text Box

SOLICITATION NUMBER: AG-6424-S-11-0003

Mark.Luckritz Text Box

SECTION J - ATTACHMENT 3

SPECIFICATIONS,

CONSTRUCTION & MATERIAL

Mark.Luckritz Text Box Project: USDA NRCS Missouri Zell EWP-FPE Restoration Federal Construction Contract

Mark.Luckritz Text Box *125 total pages

Mark.Luckritz Text Box document date: 12 Sep 11

Mark.Luckritz Text Box AG-6424-S-11-0003-02, J-3, First Page, Pg. 1

Mark.Luckritz Text Box *incorporated via Amendment #02

NRCS - NEH Part 642 – 5/2001 2-1

CONSTRUCTION SPECIFICATION

2. CLEARING AND GRUBBING

1. SCOPE

The work shall consist of the clearing and grubbing and disposal of trees, snags, logs, 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.

NRCS - NEH Part 642 - 05/01 2-2

5 DISPOSAL

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

6. MEASUREMENT AND PAYMENT

For items of work for which specific lump sum prices are established in the contract, payment for clearing and grubbing will be 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 completion of the work.

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

MoDNR-EWPP-FPE NRCS-Missouri 2-3 07/2011

7. ITEM OF WORK AND CONSTRUCTION DETAILS

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

a. East and West Sites, Subsidiary Item, Clearing and Grubbing

(1) This item shall consist of site preparation work consisting of clearing and grubbing at locations shown on the drawings. Stripping or Clearing and Grubbing shall not be done until the area is needed in the construction operations.

(2) Location of disposal areas for cleared and grubbed materials shall be approximately as shown on the drawings. Specific locations will be marked or flagged at the site by NRCS.

(3) Material shall be piled or windrowed in borrow ditches adjacent to existing levees or in other locations designated by the Engineer. Following placement, material shall be covered with a minimum of 2 feet of dozer compacted earthfill.

(3) No separate payment will be made for this item. Compensation for Clearing and

Grubbing will be included in the appropriate Earthfill and Excavation Bid Items.

NRCS-NEH Part 642 – 5/2001 3-1

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.

Materials 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 uniforms 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 shown on the drawings or as specified in Section 7 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.

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

NRCS – NEH Part 642 – 5/2001 3-2 linear foot. Payment for fence removal or removal and salvage is made at the contract unit prices for each type and size of fence.

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.

NRCS-Missouri 3-3 07/2011

7. ITEM OF WORK AND CONSTRUCTION DETAILS

Item of work to be performed in conformance with this specification and the construction

a. West Site, Subsidiary Item, Structure Removal

(1) This item shall consist of removing an existing 24” diameter smooth steel pipe and

24” diameter flap gate labeled WCS #5 on the West Site in the construction area as shown on the drawings.

(2) Removal shall be by Method 1.

(3) Marking shall be by Method 1.

(4) Materials removed shall be salvaged by the Contractor as specified in Section 4.

Pipe removed is to be used at WCS #2-West Site, WCS #3-West Site and WCS #5- East Site as shown on drawings. Flap gate removed is to be placed adjacent to contractor’s parking area as approved by COTR. Removed materials will be inspected and approved by the Engineer prior to reuse at the specified locations.

(5) No separate payment shall be made for this item. Compensation for this item will be included in Bid Item 8, Water Control Structure #2, West Site.

b. West Site, Subsidiary Item, Structure Removal-Flap Gate

(1) This item shall consist of removing an existing 36” diameter flap gate located on at the outlet of the existing 36” diameter conduit on WCS #1 on the West Site as

(4) Materials removed shall be salvaged by the Contractor as specified in Section 4.

Flap gate removed is to be placed adjacent to contractor’s parking area as approved by COTR.

be included in Bid Item 7, Water Control Structure #1, West Site.

NRCS-Missouri 3-4 07/2011

c. Subsidiary Item, East Site-Structure Removal-Flap Gate

(1) This item shall consist of removing an existing 24-inch diameter flap gate located on at the outlet of the existing 24” diameter conduit on WCS #5 on the East Site as

(4) Materials removed shall be salvaged by the Contractor as specified in Section 4.

Flap gate removed is to be placed at the outlet end of WCS #5 – East Side after installation of additional 24-inch diameter pipe.

be included in Bid Item 28, Water Control Structure 5, East Site.

NRCS-NEH 642-1/2009 5-1

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

NRCS-NEH 642-1/2009 5-2

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.

NRCS-NEH 642-1/2009 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.

NRCS-Missouri 005-4 7/2011

8.

ITEMS OF WORK AND CONSTRUCTION DETAILS

Item of work to be performed in conformance with this specification and construction a)

Bid Item C, Pollution & Erosion Control

1) This item shall consist of scheduling work, installing measures and performing work as needed to control erosion and minimize the production of sediment and other pollutants to the water and air during construction operations.

These temporary pollution control provisions contained herein shall be coordinated with other temporary and permanent pollution control features specified elsewhere in the contract or by state and local laws to assure effective pollution control.

2) Stripping or clearing and grubbing shall not be done until the area is needed in the construction operations.

3) All state and local laws governing pollution shall be followed.

4) The construction site shall be maintained in a clean and safe condition during construction operations.

5) Trash barrels shall be provided and utilized at the site. Trash shall be regularly collected and disposed of properly.

6) All waste oil, chemicals, sewage and contaminated soil caused, generated or created by, the contractor shall be removed from the site and disposed of in approved landfills.

7) Segments of work shall be completed and protected with permanent vegetation as rapidly as is consistent with good construction methods.

8) Earth stockpiles shall be located where runoff and erosion can be controlled in such a manner to minimize the production of sediment and other pollutants to the water during construction operations.

9) A site-specific Stormwater Pollution Prevention Plan (SWPPP) has been developed for the site(s) in this contract. The SWPPP contains information detailing how the Contractor is to control sediment originating from the disturbed areas during construction. Details and locations of best management practices (BMP’s) such as diversions, sediment traps and silt fences are included, if applicable. The SWPPP shall be part of this contract.

NRCS-Missouri 005-5 7/2011

At all times from the commencement of work until the work is completed, the Contractor shall have a copy of the SWPPP readily available at the project site.

The Contractor shall notify each subcontractor or entity performing work at the site of the existence of the SWPPP. The Contractor shall ensure proper actions or precautions are taken while on the site to minimize the potential for erosion and to prevent damaging any BMP’s.

10) All pollution control measures and works shall be adequately maintained in a functional condition as long as needed during the construction operation.

During construction, the Government will make regular inspections of all pollution and erosion control practices. The Government’s Representative (GR) will immediately notify the contracting agency of any deficiencies found as a result of the inspection. The contractor will be notified of and shall correct these deficiencies within seven (7) calendar days after such notification. Except as designated by the GR or otherwise shown on the drawings, all temporary measures shall be removed and the site restored to as nearly original conditions as practicable.

11) Measurement and Payment shall be by Method 2.

12) Compensation for all pollution control work items except vegetative establishment and silt fence shall be included in payment for Bid Item C, Pollution & Erosion Control.

Compensation for vegetative establishment required by the SWPPP is included in Seeding and Mulching, Bid Items 11,12, 13, 14, 15, 29, 30, 31, 32, and 33, Construction Specification 6. No separate payment will be made for vegetative establishment.

Compensation for silt fence installation, maintenance and removal referenced in this specification or in the SWPPP is included in Bid Item B, Silt Fence, Construction Specification 216.

NRCS-NEH Part 642-5/2001 6-1

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. MATERIALS

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 will be evidence of purity and germination. No seed will be accepted with a test date of more than nine (9) months prior to 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. The fertilizer 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 Engineer 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 by use of a hydraulic seeder. Seed shall be sown within twenty-four (24) hours of treatment and shall not remain in the hydraulic seeder longer than four (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. Non-asphaltic tackifiers required because of environmental considerations shall be as specified in Section 7.

NRCS-NEH Part 642-5/2001 6-2

Straw Mulch Materials - 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 will not be permitted. The Contractor shall provide a method satisfactory to the Engineer 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 compacted, polished, or on freshly cut soil surfaces.

Rocks larger than six (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 and/or sprigs are applied in the specified quantities uniformly on 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 two (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, and shall be applied to areas

NRCS-NEH Part 642-5/2001 6-3 seeded not later than two (2) working days after seeding has been performed. Straw mulch material shall be stabilized within twenty-four (24) hours of application by the use of 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. On sites 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 by injecting it into the mulch material as it is being applied. The mesh or netting stabilizing materials shall be applied smoothly but loosely on the designated areas.

The edges 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 re-establish the intended condition and to the design lines and grades required by the contract. The areas shall be refertilized, reseeded, and remulched prior to the new application of the mesh or netting.

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.

NRCS-Missouri 6-4 7/2011

7. ITEM OF WORK AND CONSTRUCTION DETAILS

Material certifications are required for these items. Item of work to be performed in conformance with this specification and the construction details therefore are:

a. Bid Items 11 & 29 Seeding & Mulching, Group 1

(1) This item shall consist of all work and materials needed to seed and mulch the

(2) The areas to be seeded and mulched shall include:

West Site

a) All Floodway sections ( Berm 1, Floodway 4, Floodway 5, Floodway

6, and Floodway portion of Dike #3-portion with 20:1 sideslopes)

b) Spoil Berm L

c) Spoil Berm M

d) All seeding associated with WCS installation

East Site

a) Floodway #1

b) Dike 1, Berm 2,4 & 7.

(3) Ground agricultural limestone shall be applied at a rate of 1000 lbs./acre of effective neutralizing material.

(4) Fertilizer furnishing the following minimum amounts of available plant food per acre shall be applied. Fertilizer shall be applied uniformly over the designated seeding areas.

Dikes, floodways and disturbed areas as determined by Engineer Nitrogen (N) ............................................................... 60 pounds Phosphate (P205) ....................................................... 90 pounds Potash (K20) .............................................................. 90 pounds

(5) Incorporate lime and fertilizer to a depth of at least 3" into the soil during preparation of seedbed. All gullies and rills shall be filled and smoothed prior to application of lime and fertilizer.

(6) The seedbed shall be prepared with common farm tools such as disks, harrows, and cultipackers. Areas not accessible to field machinery shall be prepared by hand.

(7) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag. Seed shall be furnished in amounts that equal or exceed the following rates per acre:

NRCS-Missouri 6-5 7/2011

Percent Pure Live Seed

Species of Mix Rate (lbs. per ac.)

Tall Fescue 100% 24.0

Seeding Dates March 1 through May 15 August 16 through October 15

(8) From May 16 through August 15, seeding can be done when the following conditions exist:

a) Soil moisture on the site is at field capacity at time of seeding;

b) Planting rates are increased by an additional 50 percent;

c) An adequate, firm and weed-free seedbed has been prepared;

d) Seed is planted at a depth of ¼ inch or less with grassland drill or similar quality seeding equipment; and

e) Mulch material is applied following the planting operation

If soil moisture requirement is not satisfied, all operations will be performed except sowing the seed. Overseeding will be done during the next seeding period as seeding dates permit. Increase seeding rates by 50% for overseeding. There will be no tillage during overseeding operation.

(9) Apply seed uniformly at a depth of ⅛ to ¼ inch with drill or cultipacker type seeder or broadcast seed uniformly and cover ⅛ to ¼ inch deep with a cultipacker, harrow, or similar tool. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(10) Mulch shall be small grain straw or grass hay relatively free of weed seed. The mulch shall be applied uniformly over the designated area at a rate of 1.5 tons per acre. Anchor mulch with: (1) mulch tacker into the top one (1) inch of soil, or (2) wood cellulose fibertack or a water dispersible mulch tacker following manufacturer's recommendations, or (3) commercial mulch nets or excelsior blankets. Only Option (2) or (3) shall be permitted in areas that are hydro-seeded.

(11) Insofar as practical, all operations shall be performed on the contour.

(12) Payment shall be made by Method 1. This payment will constitute full compensation for the completion of the work.

b. Bid Items 12 & 30 Seeding & Mulching, Group 2

(2) The areas to be seeded and mulched shall include:

West Site

a) Dike 3 except floodway section

b) Berm 2

NRCS-Missouri 6-6 7/2011

East Site

a) Spoil Berm E

b) Berm 3,5 & 6

(3) Ground agricultural limestone will be applied at a rate of 1000 lbs./acre of effective neutralizing material.

(4) Fertilizer furnishing the following minimum amounts of available plant food per acre shall be applied. Fertilizer shall be applied uniformly over the designated seeding areas.

Dikes, floodways and disturbed areas as determined by Engineer Nitrogen (N) ............................................................... 60 pounds Phosphate (P205) ....................................................... 90 pounds Potash (K20) .............................................................. 90 pounds

(5) Incorporate lime and fertilizer to a depth of at least 3" into the soil during preparation of seedbed. All gullies and rills shall be filled and smoothed prior to application of lime and fertilizer.

(6) The seedbed will be prepared with common farm tools such as disks, harrows, and cultipackers. Areas not accessible to field machinery shall be prepared by hand.

(7) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag. Seed shall be Missouri Native Specie (Yellow Tag) variety. Seed shall be furnished in amounts that equal or exceed the following rates per acre:

Pure Live Seed

Species Rate (lbs. per ac.)

Virginia Wildrye 27.0

Little Bluestem 3.8 Big Bluestem 2.4 Indiangrass 2.3

December 1 through May 31 August 1 through September 30

(8) At all other times, all operations will be performed except sowing the seed.

Overseeding will be done during the next seeding period as seeding dates permit.

Increase seeding rates by 50% for overseeding. There will be no tillage during overseeding operation.

(9) Apply seed uniformly at a depth of ⅛ to ¼ inch with drill or cultipacker type seeder or broadcast seed uniformly and cover ⅛ to ¼ inch deep with a cultipacker, harrow, or similar tool. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(10) Mulch shall be small grain straw or grass hay relatively free of weed seed. The mulch shall be applied uniformly over the designated area at a rate of 1.5 tons per acre. Anchor mulch with: (1) mulch tacker into the top one (1) inch of soil, or (2)

NRCS-Missouri 6-7 7/2011 wood cellulose fibertack or a water dispersible mulch tacker following manufacturer's recommendations, or (3) commercial mulch nets or excelsior blankets. Only Option (2) or (3) shall be permitted in areas that are hydro-seeded.

(11) Insofar as practical, all operations shall be performed on the contour.

c. Bid Item 13 & 31 Seeding & Mulching, Group 3 designated area.

(2) The area to be seeded and mulched shall include:

West Site

a) All spoil berms except L & M East Site

a) Spoil Berm B & F

(3) Ground agricultural limestone will be applied at a rate of 1000 lbs./acre of effective neutralizing material.

(4) Fertilizer furnishing the following minimum amounts of available plant food per acre shall be applied. Fertilizer shall be applied uniformly over the designated seeding areas.

Dikes, floodways and disturbed areas as determined by Engineer Nitrogen (N) ............................................................... 30 pounds Phosphate (P205) ....................................................... 90 pounds Potash (K20) .............................................................. 90 pounds

(5) Incorporate lime and fertilizer to a depth of at least 3" into the soil during preparation of seedbed. All gullies and rills shall be filled and smoothed prior to application of lime and fertilizer.

(6) The seedbed will be prepared with common farm tools such as disks, harrows, and cultipackers. Areas not accessible to field machinery shall be prepared by hand.

(7) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag.

Virginia Wildrye seed shall be Missouri Native Specie (Yellow Tag) variety. Seed

Virginia Wildrye 27.0

Alsike Clover 1.9 Timothy 1.9

NRCS-Missouri 6-8 7/2011

December 1 through May 31 August 1 through September 30

(8) At all other times, all operations will be performed except sowing the seed.

Overseeding will be done during the next seeding period as seeding dates permit.

Increase seeding rates by 50% for overseeding. There will be no tillage during overseeding operation.

(9) Apply seed uniformly at a depth of ⅛ to ¼ inch with drill or cultipacker type seeder or broadcast seed uniformly and cover ⅛ to ¼ inch deep with a cultipacker, harrow, or similar tool. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(10) Mulch shall be small grain straw or grass hay relatively free of weed seed. The mulch shall be applied uniformly over the designated area at a rate of 1.5 tons per acre. Anchor mulch with: (1) mulch tacker into the top one (1) inch of soil, or (2) wood cellulose fibertack or a water dispersible mulch tacker following manufacturer's recommendations, or (3) commercial mulch nets or excelsior blankets. Only Option (2) or (3) shall be permitted in areas that are hydro-seeded.

(11) Insofar as practical, all operations shall be performed on the contour.

d. Bid Item 14 & 32 Seeding and Mulching, Group 4

(1) This item shall consist of all work and materials needed to seed the designated area.

2) The area to be seeded and mulched shall include:

West Site

a) Levee Takedown area

b) All other disturbed areas not otherwise designated for seeding and mulching East Site

a) Levee Takedown area

b) All other disturbed areas not otherwise designated for seeding and mulching

(3) Ground agricultural limestone will be applied at a rate of 1000 lbs./acre of effective neutralizing material.

(4) Fertilizer furnishing the following minimum amounts of available plant food per acre shall be applied. Fertilizer shall be applied uniformly over the designated seeding areas.

Dikes, floodways and disturbed areas as determined by Engineer Nitrogen (N) ............................................................... 30 pounds

NRCS-Missouri 6-9 7/2011

Phosphate (P205) ....................................................... 90 pounds Potash (K20) .............................................................. 90 pounds

(5) Incorporate lime and fertilizer to a depth of at least 3" into the soil during preparation of seedbed. All gullies and rills shall be filled and smoothed prior to application of lime and fertilizer.

(6) The seedbed will be prepared with common farm tools such as disks, harrows, and cultipackers. Areas not accessible to field machinery shall be prepared by hand.

(7) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag. Seed

Percent Pure Live Seed

Species of Mix Rate (lbs. per ac.)

Spring Oats 100% 24

June 1 through September 30

(8) At all other times, all operations will be performed except sowing the seed.

Overseeding will be done during the next seeding period as seeding dates permit.

Increase seeding rates by 50% for overseeding. There will be no tillage during overseeding operation.

(9) Apply seed uniformly at a depth of 1 to 2 inches with drill type seeder. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(10) Insofar as practical, all operations shall be performed on the contour.

(11) Payment shall be made by Method 1. This payment will constitute full

e. Bid Item 15 Seeding, Group 5

(2) The area to be seeded shall include the portion marked on the West Site Plan View as staked in the field by the government. Other contracted work items immediately adjacent to this area shall be completed prior to the seeding of this item. If this is unavoidable, measures shall be planned to work around this area in an effort to not disturb the seeding.

(3) NO soil amendments (lime or fertilizer) are required for this work.

(4) A non-selective chemical burn down with no residual shall be applied according to label rates to remove existing vegetation. The selected, commercially available, chemical for this work and its application methods shall meet state and federal

NRCS-Missouri 6-10 7/2011 regulations. Contractor shall notify COTR prior to application with specific chemical and rate applied.

(5) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag. Seed

Big Bluestem 2.4 Virginia Wildrye 4.5 Indiangrass 2.0 Eastern Gamagrass 1.2

June 1 through June 30

(6) Apply seed uniformly at a depth of ⅛ to ¼ inch with drill or cultipacker type seeder. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(7) Insofar as practical, all operations shall be performed on the contour.

(8) Payment shall be made by Method 1. This payment will constitute full

f. Bid Item 33 Seeding and Mulching, Group 6

(2) The area to be seeded shall include the portion marked on the East Site Plan View as staked in the field by the government. Other contracted work items immediately adjacent to this area shall be completed prior to the seeding of this item. If this is unavoidable, measures shall be planned to work around this area in an effort to not disturb the seeding.

(3) NO soil amendments (lime or fertilizer) are required for this work.

(4) A non-selective chemical burn down with no residual shall be applied according to label rates to remove existing vegetation. The selected, commercially available, chemical for this work and its application methods shall meet state and federal regulations. Contractor shall notify COTR prior to application with specific chemical and rate applied.

(5) PLS is pure live seed. Pure live seed percentages in bulk seed is equal to the percent of purity times the percent of germination as shown on the seed tag. Seed

NRCS-Missouri 6-11 7/2011

Pure Live Seed Species Rate (lbs. per ac.)

Big Bluestem 2.4 Little Bluestem 1.9 Indiangrass 2.0 Eastern Gamagrass 1.2

June 1 through June 30

(6) Apply seed uniformly at a depth of ⅛ to ¼ inch with drill or cultipacker type seeder. Seeding operation shall be performed immediately after seedbed preparation, if seeding dates permit.

(7) Insofar as practical, all operations shall be performed on the contour.

(8) Payment shall be made by Method 1. This payment will constitute full

NRCS-NEH Part 642 - 1/2009

7–1

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.

7–2

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 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

• establishing final grade stakes

7–3

• 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.

STA…