IsCWRP1_Specifications_Amendment_1.pdf

Isabella County WRP 1

List of Construction Specifications

Spec. No. Title No. of Pages

2 Clearing and Grubbing 2

3 Structure Removal 4

5 Pollution Control 3

6 Seeding, Sprigging, and Mulching 9

8 Mobilization and Demobilization 2

11 Removal of Water 3

21 Excavation 6

23 Earthfill 8

26 Topsoiling 2

46 Tile Drains 4

94 Contractor Quality Control 4

490 Tree and Shrub Site Preparation 5

612 Trees and Shrubs Planting 6

List of Material Specifications

Spec. No. Title No. of Pages

548 Corrugated Polyethylene Pipe 1

551 Coated Corrugated Steel Pipe 1

592 Geotextile 3

NRCS – 03/2015

MI - Isabella County WRP 1 1

Attachment #1 AG-5D21-S-15-0003

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 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.

MI - Isabella County WRP 1 (210-VI-NEH, May 2001) 2-1

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. Subsidiary Item, Clearing and Grubbing

(1) This item shall consist of clearing and grubbing the area within the work limits as necessary for the installation of the planned works of improvement.

(2) Clearing and grubbing limits shall be the minimum necessary to accomplish the work. Individual and clumped trees and shrubs marked for preservation shall not be disturbed. Use of explosives is prohibited.

(3) All materials cleared and grubbed from the jobsite shall be placed near Shallow

Water Wildlife Areas as directed by the COR. Burning is prohibited.

(4) No separate payment shall be made for Clearing and Grubbing. Compensation for Clearing and Grubbing will be included in the payment for the following items as appropriate:

(a) Bid Item 2, Structure Removal, Construction Specification 3

(b) Bid Item 3, Tile Breaks, Construction Specification 3

(c) Bid Item 4, Shallow Water Wildlife Areas, Construction Specification 21

(d) Bid Item 5, Drain Tile, Construction Specification 46

(e) Bid Item 6, Embankment, Construction Specification 23

(f) Bid Item 8, Microtopography Seeding, Construction Specification 6

(g) Bid Item 10, Warm Season Grass / Forbs Planting, Construction

Specification 6

(h) Bid Item 11, Right of Way Seeding, Construction Specification 6

NRCS – 02/2014 2-2

MI – Isabella County WRP 1

Construction Specification 3—Structure Removal

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

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

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

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

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

5. Disposal of refuse 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.

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

(210-VI-NEH, May 2001) 3-1 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.

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

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

A. General

(1) All areas where excavation is necessary for structure removal shall be excavated to the extent to remove the structure, backfilled and compacted to the same density as the surrounding ground, and graded to blend with adjacent ground.

(2) No burning of structures and debris on-site is permitted.

(3) No disposal of structures or debris on-site is permitted.

B. Bid Item 2, Structure Removal

(1) This item shall consist of removal and disposal or salvage of all existing structures noted on the drawings. Existing structures shall include, but are not limited to corrugated metal pipe, tires, old equipment.

(2) Measurement and payment will be Method 2 of Section 6.

(3) Payment for this bid item shall constitute full compensation for all related subsidiary items. Items of work subsidiary to this bid item are:

(a) Clearing and Grubbing, Construction Specification 2

(b) Pollution Control, Construction Specification 5

(c) Seeding, Sprigging, and Mulching, Construction Specification 6

(d) Removal of Water, Construction Specification 11

(e) Excavation, Construction Specification 21

(f) Earthfill, Construction Specification 23

(g) Topsoiling, Construction Specification 26

(h) Contractor Quality Control, Construction Specification 94

C. Bid Item 3, Tile Breaks

(1) This item shall consist of removal and disposal or salvage of all tile as shown on the drawings or as directed by the COR. This item includes excavation required for finding and breaking the tiles shown on the drawings.

(2) Clay tile may be broken in pieces, 3 inches or less in diameter, and mixed well with the backfill material prior to backfilling. Clay tile greater than 3 inches in diameter shall be removed and disposed of offsite.

(3) Measurement and payment will be Method 1of Section 6.

(4) Payment for this bid item shall constitute full compensation for all related

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MI - Isabella County WRP 1

(c) Seeding, Sprigging and Mulching, Construction Specification 6

(d) Removal of Water, Construction Specification 11

(e) Excavation, Construction Specification 21

(f) Earthfill, Construction Specification 23

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MI - Isabella County WRP 1

Construction Specification 5—Pollution Control

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

2. 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.

(210-VI-NEH, January 2009) 5–1

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.

7. 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.

MI - Isabella County WRP 1 (210-VI-NEH, January 2009) 5–2

8. Items of work and construction details

A. Subsidiary Item, Pollution Control

(1) This item shall consist of scheduling operations, obtaining the required permits and plans, and performing work in a manner that minimizes soil erosion, sediment production and contamination of air and water. This item shall include furnishing a Michigan Certified Stormwater Operator (CSO), if required, and the labor, equipment and materials for the installation, maintenance, and removal of erosion and sediment control practices required by the CSO or Soil Erosion and Sediment Control Permit.

This item shall also include furnishing a standard portable chemical toilet to be located at the Nottawa Site.

(2) Temporary Silt Fence shall meet the requirements shown on Table 3 of Material

Specification 592.

(3) Construction equipment that leak fluid(s) (fuel, lubricant, hydraulic, coolant, brake, etc.)

onto the ground will not be allowed on site.

(4) Appropriate pollution control measures must be taken when refilling and replacement of construction equipment fluids will be performed onsite.

(5) No separate payment shall be made for Pollution Control. Compensation for Pollution

Control will be included in the payment for the following items as appropriate:

(a) Bid Item 1, Mobilization & Demobilization, Construction Specification 8

(b) Bid Item 2, Structure Removal, Construction Specification 3

(c) Bid Item 3, Tile Breaks, Construction Specification 3

(d) Bid Item 4, Shallow Water Wildlife Areas, Construction Specification 21

(e) Bid Item 5, Drain Tile, Construction Specification 46

(f) Bid Item 6, Embankment, Construction Specification 23

(g) Bid Item 7, Microtopography, Construction Specification 21

(h) Bid Item 8, Microtopography Seeding, Construction Specification 6

(i) Bid Item 9, Herbicide Application, Construction Specification 490

(j) Bid Item 10, Warm Season Grass / Forbs Planting, Construction Specification 6

(k) Bid Item 11, Right of Way Seeding, Construction Specification 6

(l) Bid Item 13, Tree and Shrub Planting, Construction Specification 612

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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-

(210-VI-NEH, May 2001) 6-1 dry, reasonably light in color, and shall not be musty, moldy, caked, or otherwise of low quality.

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

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

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

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

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

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

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

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

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

(210-VI-NEH, May 2001) 6-2 methods shall be used where equipment cannot safely operate to perform the work required. The tackifier shall be applied uniformly over the mulch material at the specified rate, or it shall be injected into the mulch material as it is being applied. Mesh or netting stabilizing materials shall be applied smoothly, but loosely on the designated areas. The edges of these materials shall be buried or securely anchored using spikes or staples as specified in section 7.

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

6. Measurement and payment

Method 1—For items of work for which specific unit prices are established in the contract, each area treated is measured as specified in section 7 and the area calculated to the nearest 0.1 acre.

Payment for treatment is made at the contract unit price for the designated treatment, which will constitute full compensation for completion of the work.

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

Method 2—For items of work for which specific lump sum prices are established in the contract, the quantity of work will not be measured for payment. Payment for this item is made at the contract lump sum price for the item and will constitute full compensation for the completion of the work.

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

Payment of the lump sum contract price will constitute full compensation for completion of the work.

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

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

(210-VI-NEH, May 2001) 6-3

A. General

(1) The seed shall be certified meeting all seed laws. On each bag of seed, the vendor shall attach a tag giving net weight of contents, seed name, percent by weight, lot number, purity and germination, and date of test.

(2) The following will be furnished to the Contracting Officers Representative (COR) or the Inspector by the Contractor:

(a) Copies of invoices of each shipment of seed.

(b) Certification that the equipment to be used is of the proper type, sizes, capacity, and condition to do the work.

(c) An inspection certificate for each shipment of seed cross-referenced with the invoice for each shipment.

(3) The contractor shall notify the Contracting Officer's Representative (COR) at least 48 hours prior to the date and time of any fertilizing, seeding, or mulching operations are performed.

(4) All disturbed areas shall be mulched within 24 hours after seeding, unless otherwise directed by the COR.

(5) Mulch may be clean weed-free straw mulch. Straw mulch shall be applied at a rate of

1.5 to 2 tons per acre. Hay mulch shall be applied at a rate of 2 to 2.5 tons per acre.

(6) Mulch materials shall be applied uniformly over the seeded area.

(7) Mulch shall be anchored by a mulch anchoring tool, a tandem disk weighted and set nearly straight, or a track type tractor.

(8) No seeding or seedbed preparation activities shall be performed on frozen, wet, or snow-covered ground.

(9) Nurse Crop & Bulking Agent - Bin Run Oats (32lbs/Acre) and Annual Ryegrass (15 lbs/acre) will be mixed with and planted along with the Microtopography Seeding, Warm Season Grass & Forbs Planting, and ROW Seeding as a bulking agent and nurse crop. These “Nurse Crop Species” act as “weed replacers” and condition the soil surface environment, promoting moisture retention and germination of the WSG and forbs without aggressive competition. They also bulk up the mixes to aid in even cover of the otherwise low rate/ac mixes. Additionally they confirm planting coverage since they germinate quickly and the rest of the species take their time and are difficult to ID as seedlings.

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MI – Isabella Co. WRP1

B. Bid Item 8 – Microtopography Seeding

(1) This item shall consist of furnishing all materials, labor and equipment, seedbed preparation, and installing seed and mulch on all designated Microtopography areas as shown on the drawings.

(2) Measurement and Payment shall be made by Method 1 of Section 6. Measurement for payment shall be based on horizontal distance.

(3) In Section 3, dates of planting, Microtopography Seeding shall be planted from UApril

10 to May 20U or from UJuly 20 to August 15 Uas soil moisture and local weather conditions permit. If carriers are used they must be of inert material such as sand or vermiculite. A drag chain shall not be used.

(4) In Section 3, seeding mixtures and application rates, the following seed types and rates of application shall be:

Microtopography Seeding Mix:

Scientific Name Common Name Seeding Rate PLS oz/acre

Avena sativa Bin Run Oats (Nurse crop & Bulking Agent) 512

Lolium multiflorum Annual Ryegrass (Nurse crop & Bulking Agent) 240

Bromus Ciliatus Fringed Brome 16 Calamagrostis canadensis

Bluejoint 1

Elymus trachycaulus Slender wheatgrass 16 Elymus virginicus Virginia wildrye 32 Carex vulpinoidea Fox sedge 1 Carex frankii Frank’s Sedge 1 Carex bebbii Bebb’s oval sedge 1 Carex interior Inland sedge 1 Carex pellita Wooly sedge 1 Agrostis gigantea Red Top 16 TOTAL 838 PLS oz/acre

(5) The areas on the construction drawings labeled as Microtopography Seeding U(36.5 ac)U shall be treated using the following sequence of treatment methods.

(a) USeed Bed Prep U–In areas that have been disturbed by the Microtopography construction, level and firm the seedbed by light disking and/or cultipacking.

(b) UPlantingU - Drill the Microtopography Seeding Mix with a Rangeland No-Till

Drill to a maximum depth of 1/4 inch on the entire 36.5 acres marked Southern Hardwood Swamp & Microtopography on the drawings. This includes the areas

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disturbed by Microtopography construction and the areas that were left undisturbed during Microtopography construction.

(c) UEvaluationU - The newly established Microtopography Seeding areas will be evaluated by the CO on October 15, 2015. The evaluation will include a determination of the germination success, seedling density, health, vigor, and weed pressure in the Microtopography Seeding areas. This information will be used to determine if mowing and herbicide application will be needed in the spring of 2016 to plant Southern Hardwood Swamp Tree and Shrub species.

(6) Payment for this bid item shall constitute full compensation for all related subsidiary items. Items of work subsidiary to this bid item are:

(a) Clearing & Grubbing, Construction Specification 2

(c) Removal of Water, Construction Specification 11

(d) Contractor Quality Control, Construction Specification 94

C. Bid Item 10 – Warm Season Grass & Forbs Planting (21.2 ac.)

preparation, and installing seed and mulch on all designated Warm Season Grass & Forbs Planting areas as shown on the drawings.

(3) In Section 3, planting dates, conduct planting no sooner than May 5, 2016 and no later than June 15, 2016.

(4) The areas on the drawings labeled Warm Season Grass and Forbs Planting U(21.2 ac.)

Ushall be planted using a Rangeland No-Till Drill to a depth no greater than 1/8 to 1/4 inches.

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(5) In Section 3, seeding mixtures and application rates, the following seed types and rates of application shall be:

Warm Season Grass & Forbs Planting Seeding Mix:

Scientific Name Common Name Seeding Rate

PLS oz/acre Avena sativa Bin Run Oats

(Nurse Crop & Bulking Agent) 512

Lolium multiflorum Annual Ryegrass (Nurse Crop & Bulking Agent) 240

Andropogon gerardii Big Bluestem 16 Schizachyrium scoparium Little Bluestem 32 Panicum virgatum Switchgrass 16 Sorghastrum nutans Indiangrass 32 Echinacea angustifolia Purple Coneflower 2 Rudbeckia hirta Black-Eyed Susan 2 Asclepias tuberosa Butterfly Weed 2 Ratibida pinnata Gray Headed Coneflower 2 Symphyotrichum novae-angliae New England Aster 2 Aster oolentangiensis Sky Blue Aster 2 Oligoneuron rigidum Stiff Goldenrod 2 Solidago speciosa Showy Goldenrod 2 Coreopsis tripteris Tall Coreopsis 1 Monarda fistulosa Wild Bergamot 1 Helianthus giganteus Tall Sunflower 1 Desmodium canadense Showy Tick Trefoil 1

TOTAL 868 PLS

oz/acre

(6) Payment for this bid item shall constitute full compensation for all related subsidiary

D. Bid Item 11– Right of Way (ROW) Seeding preparation, and installing seed and mulch on all designated ROW areas U(13.2 ac) Uas shown on the drawings.

(3) In Section 3, planting dates, ROW Seeding shall be performed from April 10 to May

20 or from July 20 to August 15.

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(4) ROW Seeding shall be planted by Rangeland No-Till Drill to a depth 1/4 -1/2 inches deep.

(5) In Section 3, seed mixtures and application rates, the following seed types and rates of application shall be:

Right of Way (ROW) Seeding Mix:

Scientific Name Common Name Seeding

Rate PLS lbs /acre

Avena sativa Bin Run Oats (Nurse crop & Bulking Agent) 32

Lolium multiflorum Annual Ryegrass (Nurse crop & Bulking Agent) 15

Dactylis glomerata Orchard Grass 2.5 Phleum pratense Timothy 3.0 Agrostis gigantea Red Top 1.0 Elymus canadensis Canada Wildrye 1.0 Trifolium pratense Red Clover 3.0 Trifolium repens Ladino Clover 1.5

TOTAL 59 PLS

lbs /acre

(5) Payment for this bid item shall constitute full compensation for all related subsidiary

E. Subsidiary Item, Seeding, Sprigging, and Mulching preparation, and installing seed and mulch on all areas disturbed by construction activities within the work limits.

(2) Permanent seeding may be performed any time during the year except during the period October 2 to October 31 and any other time of the year that the seedbed cannot be properly prepared due to wetness, snow or frozen soil.

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(3) The following seed types and rates of application shall be spread on the areas to be permanently seeded:

UKinds of SeedU UPounds / Acre Red Top 1 Creeping Red Fescue 20 Smooth Bromegrass 20 Perennial Ryegrass 5

(4) A temporary seeding of oats and cereal rye shall be broadcast and cultipacked during the period October 2 to October 31 at a rate of 30 lbs/acre each. The permanent seeding shall be broadcasted over the temporary seeding as a dormant seeding on or after November 1 until the seedbed cannot be properly prepared due to wetness, snow or frozen soil. The permanent seeding shall be mulched unless there is 6 to 8 inches of growth from the temporary seed.

(5) No separate payment shall be made for Subsidiary Item Seeding, Sprigging, and

Mulching. Compensation for Seeding, Sprigging, and Mulching will be included in the payment for the following items as appropriate:

(c) Bid Item 4, Shallow Water Wildlife Areas, Construction Specification 21

(d) Bid Item 5, Drain Tile, Construction Specification 46

(e) Bid Item 6, Embankment, Construction Specification 23

NRCS – 3/2015 6-9

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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.

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

4. Items of work and construction details The items of work to be performed in conformance with this specification and the construction

A. Bid Item 1, Mobilization and Demobilization

(1) This item consists of the mobilization and demobilization of forces, equipment and supplies necessary for performing the work as noted on the drawings, and for performing all preparatory and final clean-up work at the site. This item includes premiums paid for performance and payment bonds.

(2) The demobilization shall include, but is not limited to, removal and disposal of all trash, debris, equipment, parts, and supplies. Disposal shall be at an off-site location in accordance with local, State, and Federal regulations.

Demobilization shall also include repairing damage to existing drives.

(3) Payment will be made only for initial mobilization and demobilization of equipment necessary to perform the work. No additional payment will be made for equipment moved from or back to the site.

(4) Twenty-five percent (25%) of the lump sum payment will be held until the completion of the project to assure proper clean-up and removal of trash, debris, equipment, parts, and supplies.

(5) Payment for this bid item shall constitute full compensation for all related

(a) Pollution Control, Construction Specification 5

(b) Contractor Quality Control, Construction Specification 94

NRCS – 02/2014 8-2

Construction Specification 11—Removal of Water

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

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

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

3. Dewatering the construction site Foundations, cutoff trenches, and all other parts of the construction site shall be dewatered and kept free of standing water and muddy conditions as necessary for the proper execution of the work. The contractor shall furnish, install, operate, and maintain all drains, sumps, pumps, casings, well points, and all other equipment required to properly dewater the site as specified.

Dewatering systems that cause a loss of soil fines from the foundation areas will not be permitted.

The contractor shall furnish the contracting officer, in writing, a proposed plan for dewatering before commencing with any construction activity for which dewatering may be required, unless waived in section 8 of this specification. Acceptance of this plan or the waiving of the plan requirement will not relieve the contractor of the responsibilities for completing the specified work.

4. Dewatering borrow areas The contractor shall maintain all borrow areas free of surface water or otherwise provide for timely and effective removal of surface and subsurface water that accumulates within the borrow area, unless waived in section 8 of this specification. Borrow material shall be processed as necessary to achieve proper and uniform moisture content at the time of placement.

If pumping to dewater borrow areas is included as a bid item of work in the bid schedule, each pump discharge pipe shall be equipped with a water meter. The meter shall be such that the measured quantity of water is accurate within 3 percent of the true quantity. The contractor shall provide necessary support to perform accuracy tests of the water meter when requested by the

(210-VI-NEH, May 2001) 11-1 contracting officer.

5. Erosion and pollution control Removal of water from the construction site, including the borrow areas, shall be accomplished so that erosion and the transporting of sediment and other pollutants are minimized. Dewatering activities shall be accomplished in a manner that the water table water quality is not altered.

Pollution control activities shall not conflict with the requirements of Construction Specification 5, Pollution Control, if it is a part of this contract.

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 that which existed before construction. Areas where temporary works were located shall be graded for sightly appearance with no obstruction to natural surface waterflows or the proper functioning and access to the works of improvement installed. The contractor shall exercise extreme care during the removal stages to minimize the loss of soil sediment and debris that was trapped during construction.

Pipes, casings, and any other material used to dewater the site shall be removed from temporary wells. The wells shall be filled to ground level with clean gravel or other suitable material approved by the contracting officer. The contractor shall exercise extreme care to prevent pollution of the ground water by these actions.

7. 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 contract line item 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.

(210-VI-NEH, May 2001) 11-2

8. Items of work and construction details

A. Subsidiary Item, Removal of Water

1) This item shall consist of all work necessary for diverting groundwater and surface water and dewatering the various areas of the worksite for constructing the works of improvement as shown on the drawings.

2) Submit a dewatering and diversion plan to the COR for review approval at least 10 days prior to commencing the work. The plan shall include methods and equipment to be used to divert and dewater, if necessary.

3) No separate payment shall be made for Removal of Water. Compensation for Removal of Water will be included in the payment for the following items as appropriate:

(c) Bid Item 4, Shallow Water Wildlife Areas, Construction Specification 21

(d) Bid Item 5, Drain Tile, Construction Specification 46

(e) Bid Item 6, Embankment, Construction Specification 23

(f) Bid Item 7, Microtopography, Construction Specification 21

(g) Bid Item 8, Microtopography Seeding, Construction Specification 6

(h) Bid Item 9, Herbicide Application, Construction Specification 490

(i) Bid Item 10, Warm Season Grass / Forbs Planting, Construction Specification 6

(j) Bid Item 11, Right of Way Seeding, Construction Specification 6

(k) Bid Item 13, Tree and Shrub Planting, Construction Specification 612

NRCS – 02/14

MI - Isabella County WRP 1 11-3

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Construction Specification 21—Excavation

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

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

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

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

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

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

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

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

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

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

Blasting shall be done in a manner as to prevent damage to the work or unnecessary fracturing of the underlying rock materials and shall conform to any special requirements in section 10 of this specification. When specified in section 10, the contractor shall furnish the engineer, in writing, (210-VI-NEH, May 2001) 21-1 a blasting plan before blasting operations begin.

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.