Amd 03 W9128F25B0005 Spec 32 92 19.pdf

Lower Brule N. Ecosystem Restoration Proj. Element 1 Big Bend Dam BB00106

SECTION TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 92 19

SEEDING

1.1 REFERENCES

1.2 DEFINITIONS

1.2.1 Stand of Turf

1.3 RELATED REQUIREMENTS

1.4 SUBMITTALS

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

1.5.1.1 Seed Protection

1.5.1.2 Gypsum Sulfur Iron and Lime Delivery

1.5.2 Storage

1.5.2.1 Seed, Gypsum, Sulfur, Iron, and Lime Storage

1.5.2.2 Topsoil

1.5.2.3 Handling

1.6 TIME RESTRICTIONS AND PLANTING CONDITIONS

1.6.1 Restrictions

1.7 TIME LIMITATIONS

1.7.1 Seed

PART 2 PRODUCTS

2.1 SEED

2.1.1 Classification

2.1.2 Seed Mixtures

2.1.3 Seed Mixture by Weight

2.2 WILLOW POLES

2.3 PLANTING SOIL

2.3.1 On-Site Topsoil

2.3.2 Off-Site Planting Soil

2.3.3 Composition

2.4 SOIL CONDITIONERS

2.4.1 Lime

2.4.2 Aluminum Sulfate

2.4.3 Sulfur

2.4.4 Iron

2.4.5 Sand

2.4.6 Gypsum

2.4.7 Calcined Clay

2.5 MULCH

2.5.1 Straw

2.5.2 Hay

2.6 WATER

2.7 EROSION CONTROL MATERIALS

2.7.1 Erosion Control Blanket

2.7.2 Erosion Control Material Anchors

PART 3 EXECUTION

SECTION 32 92 19 Page 1

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3.1 PREPARATION

3.1.1 EXTENT OF WORK

3.1.1.1 Planting Soil

3.1.1.2 Soil Conditioner Application Rates

3.2 STAKING

3.3 SEEDING

3.3.1 Seed Application Seasons and Conditions

3.3.2 Seed Application Method

3.3.2.1 Broadcast and Drop Seeding

3.3.2.2 Drill Seeding

3.3.3 Mulching

3.3.3.1 Straw Mulch

3.3.4 Erosion Control Blanket

3.3.5 Watering

3.4 PROTECTION OF TURF AREAS

3.5 RESTORATION

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SECTION 32 92 19 Page 2

SECTION 32 92 19

SEEDING

PART 1 GENERAL

Uniformly distribute seed varieties and quantities specified over all ground areas disturbed by grading and/or trenching and not otherwise surfaced and in such manner that will produce an even stand of grass over the entire area seeded. The area to be *Am-3 topsoiled topped with planting soil **Am-3 and seeded with the upland seed mixture outlined in the landscape plans is where the breakwater ties into the shore and all areas disturbed by construction and not otherwise paved or surfaced in aggregate or crushed concrete landward of the 3 to 1 slope at the water's edge along the shoreline, and landward of the 2 to 1 slope at the water's edge on the offshore breakwater planting terrace. The tree planting benches are to be *Am-3 topsoiled topped with planting soil **Am-3 and seeded with another upland seed mixture designated in the landscape plans for use between tree planting rows. Plant the islands formed from the temporary access roads, the 3 to 1 slope at the water's edge along the shoreline, and a 10 foot wide band of shoreline landward of the 2 to 1 slope at the water's edge along the offshore breakwater planting terrace with the wetland seed mixture outlined in the landscape plans.

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C602 (2019) Agricultural Liming Materials

ASTM D4972 (2019) pH of Soils

U.S. DEPARTMENT OF AGRICULTURE (USDA)

AMS Seed Act (1940; R 1988; R 1998) Federal Seed Act

DOA SSIR 42 (1996) Soil Survey Investigation Report No. 42, Soil Survey Laboratory Methods Manual, Version 3.0

1.2 DEFINITIONS

1.2.1 Stand of Turf

95 percent ground cover of the established species.

1.3 RELATED REQUIREMENTS

Section 31 00 00 EARTHWORK applies to this section for pesticide use and plant establishment requirements, with additions and modifications herein.

SECTION 32 92 19 Page 3

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

*Am-3

SD-03 Product Data

Seed Mixtures; G, DO

SD-06 Test Reports

Topsoil Planting Soil Composition Tests ; G, DO (reports and recommendations).

SD-07 Certificates

State Certification and Approval for Seed ; G, DO

SD-08 Manufacturer's Instructions

Erosion Control Materials ; G, DO

**Am-3

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

1.5.1.1 Seed Protection

Protect from drying out and from contamination during delivery, on-site storage, and handling.

*Am-3

1.5.1.2 Gypsum Sulfur Iron and Lime Delivery

Deliver to the site in original, unopened containers bearing manufacturer's chemical analysis, name, trade name, trademark, and indication of conformance to state and federal laws. Instead of containers, gypsum sulphur iron and lime may be furnished in bulk with certificate indicating the above information.

1.5.2 Storage

1.5.2.1 Seed, Gypsum, Sulfur, Iron, and Lime Storage

Store in cool, dry locations away from contaminants.

**Am-3

1.5.2.2 Topsoil

Clear and grub existing vegetation three to four weeks prior to

SECTION 32 92 19 Page 4 stockpiling topsoil.

1.5.2.3 Handling

Do not drop or dump materials from vehicles.

1.6 TIME RESTRICTIONS AND PLANTING CONDITIONS

1.6.1 Restrictions

Do not plant when the ground is frozen, snow covered, muddy, or when air temperature exceeds 90 degrees Fahrenheit.

1.7 TIME LIMITATIONS

1.7.1 Seed

Apply seed within twenty four hours after seed bed preparation.

PART 2 PRODUCTS

2.1 SEED

2.1.1 Classification

Provide State-certified seed of the latest season's crop delivered in original sealed packages, bearing producer's guaranteed analysis for percentages of mixtures, purity, germination, weedseed content, and inert material. Label in conformance with AMS Seed Act and applicable state seed laws. Wet, moldy, or otherwise damaged seed will be rejected. Field mixes will be acceptable when field mix is performed on site in the presence of the Contracting Officer.

*Am-3

2.1.2 Seed Mixtures

a. See landscape plans for seed mixtures and rates.

b. Submit a copy of the proposed seed mixes, listing species common name, variety, scientific name, percent of mix, and PLS pounds per acre to the DO for approval prior to beginning work.

**Am-3

2.1.3 Seed Mixture by Weight

Proportion seed mixtures by weight.

2.2 WILLOW POLES

See attached appendix, Vegetated Riprap, for willow staking information

*Am-3

SECTION 32 92 19 Page 5

2.3 TOPSOIL PLANTING SOIL

2.3.1 On-Site Topsoil

Surface soil stripped and stockpiled on site and modified as necessary to meet the requirements specified for topsoil planting soil in paragraph COMPOSITION. When available topsoil planting soil must be existing surface soil stripped and stockpiled on-site in accordance with Section

31 00 00 EARTHWORK.

2.3.2 Off-Site Topsoil Planting Soil

Conform to requirements specified in paragraph COMPOSITION. Additional topsoil planting soil must be furnished by the Contractor.

2.3.3 Composition

Containing from 5 0 to 10 percent organic matter as determined by the topsoil planting soil composition tests of the Organic Carbon, 6A, Chemical Analysis Method described in DOA SSIR 42 . Maximum particle size, 3/4 inch, with maximum 3 percent retained on 1/4 inch screen. The pH must be tested in accordance with ASTM D4972. Topsoil Planting soil must be free of sticks, stones, roots, and other debris and objectionable materials. Other components must conform to the following limits:

Silt 25-50 7-50 percent

Clay 10-30 4-30 percent

Sand 20-35 20-82 percent pH 5.5 to 7.0 6.0 to 7.8

Soluble Salts Electrical Conductivity

600 ppm maximum 4 dS/m maximum

Exchangeable Sodium 9% maximum

2.4 SOIL CONDITIONERS

Add conditioners to planting soil as required to bring into compliance with "composition" standard for planting soil as specified herein.

2.4.1 Lime

Commercial grade limestone containing a calcium carbonate equivalent (C.C.E.) as specified in ASTM C602 of not less than 85 percent.

2.4.2 Aluminum Sulfate

Commercial grade.

2.4.3 Sulfur

100 percent elemental

SECTION 32 92 19 Page 6

2.4.4 Iron

100 percent elemental

2.4.5 Sand

Clean and free of materials harmful to plants.

2.4.6 Gypsum

Coarsely ground gypsum comprised of calcium sulfate dihydrate 80 percent, calcium 18 percent, sulfur 14 percent; minimum 96 percent passing through 20 mesh screen, 100 percent passing thru 16 mesh screen.

2.4.7 Calcined Clay

Calcined clay must be granular particles produced from montmorillonite clay calcined to a minimum temperature of 1200 degrees F. Gradation: A minimum 90 percent must pass a No. 8 sieve; a minimum 99 percent must be retained on a No. 60 sieve; and material passing a No. 100 sieve must not exceed 2 percent. Bulk density: A maximum 40 pounds per cubic foot.

**Am-3

2.5 MULCH

Mulch must be free from noxious weeds, mold, and other deleterious materials.

2.5.1 Straw

Stalks from oats, wheat, rye, barley, or rice. Furnish in air-dry condition and of proper consistency for placing with commercial mulch blowing equipment. Straw must contain no fertile seed.

*Am-3

2.5.2 Hay

Air-dry condition and of proper consistency for placing with commercial mulch blowing equipment. Hay must be sterile, containing no fertile seed.

Hay is not to be used as mulch.

**Am-3

2.6 WATER

Source of water must be approved by Contracting Officer and of suitable quality for irrigation, containing no elements toxic to plant life.

2.7 EROSION CONTROL MATERIALS

2.7.1 Erosion Control Blanket

Cover seeded areas adjacent to the water with 3 to 1 slopes or greater and a 10 foot wide band landward of the 2 to 1 slope at the water's edge of the offshore breakwater planting terrace with an erosion control blanket.

Straw and Coconut Erosion Control Blanket. Use straw/coconut erosion control

SECTION 32 92 19 Page 7 blanket that is a machine produced mat consisting of 70 percent agricultural straw and 30 percent coconut fiber with 100% biodegradable netting. Use blanket that is consistent in thickness with the straw and coconut fiber evenly distributed over the entire area of the mat. Use blanket that is covered on the top side with jute or equivalent 100% biodegradable netting having an approximate 5/8 inch x 5/8 inch mesh and on the bottom with biodegradable netting with an approximate ¼ inch x ¼ inch to ½ inch x ½ inch mesh. Use blanket that is sewn together with cotton, biodegradable thread.

Material requirements:

Straw content: 70% 0.35 lb./sq. yd.

Coconut Fiber Content: 30% 0.15 lb./sq. yd.

Netting: Bottom side jute or equivalent biodegradable 1 to 1.65 lbs.

Top side jute or equivalent biodegradable 1.65 to 3 lbs. per 1,000 sq. ft.

Thread: Cotton, biodegradable Roll Width: 6.5 to 7.5 feet Roll length: 83.5 to 90 feet Area Covered by One Roll: 60 to 75 sq. yds

2.7.2 Erosion Control Material Anchors

Erosion control anchors must be as recommended by the manufacturer.

PART 3 EXECUTION

3.1 PREPARATION

*Am-3

3.1.1 EXTENT OF WORK

Provide soil preparation prior to planting (including soil conditioners as required), fertilizing, seeding, and surface topdressing of all newly graded finished earth surfaces, unless indicated otherwise, and at all areas inside or outside the limits of construction that are disturbed by the Contractor's operations. Have the Contracting Officer verify that the finished grades are as indicated on the drawings, and the placing of topsoil and smooth grading have been completed in accordance with Section

31.00.00. Correct any deviation therefrom prior to seeding. Ensure soil used for repair of erosion and correction of grade deficiencies conforms to that specified in the paragraph topsoil planting soil .

3.1.1.1 Topsoil Planting Soil

Provide 24 inches of on-site topsoil planting soil at tree planting benches to meet indicated finished grade. In all other areas, provide 4 inches of on-site topsoil planting soil to meet indicated finish grade.

After areas have been brought to indicated finish grade, incorporate pH adjusters soil conditioners into soil a minimum depth of 4 inches by disking, harrowing, tilling or other method approved by the Contracting Officer. Remove debris and stones larger than 3/4 inch in any dimension remaining on the surface after finish grading. Correct irregularities in finish surfaces to eliminate depressions. Protect finished topsoil planting soil areas from damage by vehicular or pedestrian traffic.

It is anticipated that a larger volume of topsoil planting soil will be needed for the new grade than can be salvaged from the existing grade.

Place existing topsoil supplemented as needed with contractor-furnished

SECTION 32 92 19 Page 8 topsoil planting soil in order to place the specified amount of topsoil planting soil on areas to be seeded and/or areas disturbed by contractor work, staging, or stockpiling.

3.1.1.2 Soil Conditioner Application Rates

Apply soil conditioners at rates as determined by laboratory soil analysis of the soils at the job site.

**Am-3

3.2 STAKING

See attached appendix, Vegetated Riprap, for willow staking information

3.3 SEEDING

3.3.1 Seed Application Seasons and Conditions

Sow seed for spring planting from April 1 to June 10 and for dormant planting from Nov 1 to January 31. Perform seeding operations only during periods when beneficial results can be obtained. When drought, excessive moisture or other unsatisfactory conditions prevail, stop the work when directed. When special conditions warrant a variance to the operations, submit proposed times to and approved by the Contracting Officer.

3.3.2 Seed Application Method

Drill, broadcast, or drop seed the wetland seed mix. Drill seed the upland seed mix and tree row seed mix.

3.3.2.1 Broadcast and Drop Seeding

Uniformly broadcast seed at the rate specified for broadcast seeders.

Broadcast half of the seed in one direction,and the remainder at right angles to the first direction. Cover seed to an average depth of 1/4 inch but no more than 1/2 inch by disk harrow, steel mat drag, cultipacker, or other approved device. When broadcast seeded, apply the seed mix at twice the rate specified.

3.3.2.2 Drill Seeding

Uniformly drill seed mixes to an average depth of 1/4 inch at the rate specified using a Great Plains, Tye, Traux, John Deere Rangeland Drill, Brillon or similar native seed drill with seed agitators, picker wheels and multiple seed boxes. Ensure seeds planted in rows are no more than 6 inches apart.

3.3.3 Mulching

*Am-3

3.3.3.1 Hay or Straw Mulch

Hay or straw Straw mulch must be spread uniformly at the rate of 2 tons per acre. Mulch must be spread by hand, blower-type mulch spreader, or other approved method. Mulching must be started on the windward side of relatively flat areas or on the upper part of steep slopes, and continued uniformly until the area is covered. The mulch must not be bunched or

SECTION 32 92 19 Page 9 clumped. Sunlight must not be completely excluded from penetrating to the ground surface. All areas installed with seed must be mulched on the same day as the seeding. Mulch must be anchored immediately following spreading.

**Am-3

3.3.4 Erosion Control Blanket

Use erosion control blanket in areas along the shoreline with 3 to 1 slopes or greater and in a 10 foot wide band landward of the 2 to 1 slope at the water's edge of the offshore breakwater planting terrace. Properly prepare, amend, and seed the area to be covered with erosion control blanket (Woven Coconut), and (Straw/Coconut before the blanket is placed. Install in accordance with manufacturer's recommendations.

Place the blanket smoothly but loosely on the soil surface without stretching. Bury the upslope end in a trench 6 inches wide by 6 inches deep beyond the crest of the slope to avoid undercutting. For slope applications, install with a 6 inch overlap where one roll of blanket ends and another begins with the uphill blanket placed on top of the blanket on the downhill side. Install with a 4 inch overlap wherever 2 widths of blanket are applied side by side. Insert staples in a pattern according to the manufacturer's recommendation at approximately 2 staples per square yard.

3.3.5 Watering

Start watering areas seeded as required by temperature and wind conditions. Apply water at a rate sufficient to insure thorough wetting of soil to a depth of 2 inches without run off. During the germination process, seed is to be kept actively growing and not allowed to dry out.

3.4 PROTECTION OF TURF AREAS

Immediately after turfing, protect area against traffic and other use.

3.5 RESTORATION

Restore to original condition existing turf areas which have been damaged during turf installation operations at the Contractor's expense. Keep clean at all times at least one paved pedestrian access route and one paved vehicular access route to each building. Clean other paving when work in adjacent areas is complete.

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SECTION 32 92 19 Page 10