Seeding_Specification.pdf

Section 32 92 19

TECHNICAL PROVISIONS

SECTION 32 92 19

SEEDING

PART 1 GENERAL

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 C 602 (1995a; R 2001) Agricultural Liming Materials

ASTM D 4427 (1992; R 2002e1) Peat Samples by Laboratory Testing

ASTM D 4972 (2001) 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. No bare patches larger than 16 square inches (4 inches X 4 inches).

1.3 NOT USED

1.4 SUBMITTALS

Government approval is required for the following submittals:

1.4.1. Certificates Seed Certification. All grass seed shall meet current North Dakota certification and approval for turf grass or reclamation purposes. Each grass mix, or separate species shall be tested by State certified seed laboratory. Seed laboratory test results shall be supplied directly by laboratory to the owner.

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.

1.5.1.2 Fertilizer, Gypsum, Sulfur, Iron and Lime Delivery (if required). 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, fertilizer, 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, Fertilizer Gypsum Sulfur Iron and Lime Storage Store in cool, dry locations away from contaminants.

1.5.2.2 Topsoil. Prior to stockpiling topsoil, treat growing vegetation with application of appropriate specified non-selective herbicide. Clear and grub existing vegetation three to four weeks prior to 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-approved seed with Seed Certification of the latest season's crop delivered in original sealed packages, bearing producer's guaranteed analysis for percentages of mixtures, purity, [ J.

germination, weed/seed 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.

2.1.2 Planting Dates

Grass Mix Planting Dates

Native Grass April 30 - June 30 and September 30 to October 31

Turf Grass April 30 - June 30 and September 1 to October 1

Temporary Seeding April 30 - June 30 and September 1 to October 1

2.1.3 Seed. Classification. Provide certified approved Endophyte-enhanced seed of the latest season's crop delivered in original sealed packages, bearing producer's guaranteed analysis for percentages of mixtures, purity, germination, weed-seed 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’s representative.

Seed Mixture/Weight Tables:

Sunny Mix Seed Kind By Weight (%) Germination (%) Purity (%)

Creeping Red Fescue 10 98 85 Manhattan Perennial Rye 20 98 85 Kentucky Bluegrass – Diva or Dragon 15 98 85 Kentucky Bluegrass - NuGlade 20 98 85 Kentucky Bluegrass – Certified Park 35 98 85

Shade Mix Seed Kind By Weight (%) Germination (%) Purity (%)

Creeping Red Fescue 20 98 85 Manhattan Perennial Rye 20 98 85 Kentucky Bluegrass – Diva or Dragon 10 98 85 Kentucky Bluegrass - NuGlade 15 98 85 Kentucky Bluegrass – Certified Park 35 98 85

Proportion seed mixtures by weight. Temporary seeding must later be replaced by [Season 1] or [Season 2] plantings for a permanent stand of grass. The same requirements of turf establishment for [Season 1] or [Season 2] apply for temporary seeding.

2.2 TOPSOIL

2.2.1 On-Site Topsoil. Surface soil stripped and stockpiled on site and modified as necessary to meet the requirements specified for topsoil in paragraph entitled "Composition." When available, topsoil shall be existing surface soil stripped and stockpiled on-site, free from rubbish, rocks, clay and sand.

2.2.2 Off-Site Topsoil. Conform to requirements specified in paragraph entitled "Composition." Additional topsoil shall be furnished by the Contractor meet minimum topsoil requirements stated herein.

2.2.3 Composition. Containing from 5 to 10 percent organic matter as determined by the topsoil 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 shall be tested in accordance with ASTM D 4972. Topsoil shall be free of sticks, stones, roots, and other debris and objectionable materials. Other components shall conform to the following limits:

Silt 25-50 percent Clay 10-30 percent Sand 20-35 percent pH 5.5 to 7.0 Soluble Salts 600 ppm maximum

2.3 SOIL CONDITIONERS

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

2.3.1 Lime. Commercial grade hydrated limestone containing a calcium carbonate equivalent (C.C.E.) as specified in ASTM C 602 of not less than 20 percent.

2.3.2 Aluminum Sulfate. Commercial grade.

2.3.3 Sulfur. 100 percent elemental.

2.3.4 Iron. 100 percent elemental.

2.3.5 Sand. Clean and free of materials harmful to plants.

2.3.6 Composted Derivatives. Ground bark, neutralized sawdust, humus or other green wood waste material free of stones, sticks, and soil stabilized with nitrogen and having the following properties:

2.3.6.1 Particle Size:

Minimum percent by weight passing: No. 4 Mesh Screen = 95%, and/ No. 8 mesh screen = 80%.

2.3.7 Gypsum. Coarsely ground gypsum comprised of calcium sulfate dihydrate 61 percent, calcium 22 percent, sulfur 17 percent; minimum 96 percent passing through 20 mesh screen, 100 percent passing thru 16 mesh screen.

2.3.8 Calcined Clay. Calcined clay shall be granular particles produced from montmorillonite clay calcined to a minimum temperature of 1200 degrees F, Gradation: A minimum 90 percent shall pass a No. 8 sieve; and a minimum 99 percent shall be retained on a No. 60 sieve, and a maximum 2 percent shall pass a No. 100 sieve. Bulk density: A maximum 40 pounds per cubic foot.

2.4 Not Used.

2.4.1 Not Used.

2.4.2 Not Used.

2.4.3 Not Used.

2.5 WATER

Source of water shall be approved by Contracting Officer and of suitable quality for irrigation, containing no elements toxic to plant life. Watering shall be the contractor’s responsibility until the new grass is established.

2.6 EROSION CONTROL MATERIALS

Erosion control material shall conform to the following:

2.6.1 Erosion Control Fabric. Fabric shall be knitted construction of polypropylene yarn with uniform mesh openings 3/4 to 1 inch square with strips of biodegradable paper. Filler paper strips shall have a minimum life of 6 months.

2.6.2 Erosion Control Material Anchors. Erosion control anchors shall be as recommended by the manufacturer.

PART 3 EXECUTION

3.1 PREPARATION

3.1.1 EXTENT OF WORK

Provide soil preparation (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.

3.1.1.1 Topsoil. Provide topsoil to ensure positive drainage from the buildings. After areas have been brought to the proper finish grade, incorporate fertilizer pH adjusters 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 ¾-inch in any dimension remaining on the surface after finish grading.

Correct irregularities in finish surfaces to eliminate depressions. Protect finished topsoil areas from damage by vehicular or pedestrian traffic.

3.1.1.2 Fertilizer Application Rates. Apply fertilizer at rates as determined by laboratory soil analysis of the soils at the job site.

3.2 SEEDING

3.2.1 Seed Application Seasons and Conditions. Immediately before seeding, restore soil to proper grade. Do not seed when ground is muddy, frozen, snow-covered, or in an unsatisfactory condition for seeding. If special conditions exist that may warrant a variance in the above seeding dates or conditions, submit a written request to the Contracting Officer stating the special conditions and proposed variance. Apply seed within twenty-four hours after seedbed preparation. Sow seed by approved sowing equipment. Sow one-half the seed in one direction, and sow the remainder at right angles to the first sowing.

3.2.2 Seed Application Method. Seed application method shall be hydro-seed.

3.2.2.1 Turf Grass Seeding Rate and Technique. Turf grass seed mix shall be uniformly planted at the rate of 1.0 pounds per 1000 square feet.

3.2.3 Mulching

3.2.3.1 Hay or Straw Mulch. Hay or straw mulch shall be spread uniformly at the rate of 2 tons per acre.

Mulch shall be spread by hand, blower-type mulch spreader, or other approved method. Mulching shall 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 shall not be bunched or clumped. Sunlight shall not be completely excluded from penetrating to the ground surface. All areas installed with seed shall be mulched on the same day as the seeding. Mulch shall be anchored immediately following spreading.

3.2.3.2 Non-Asphaltic Tackifier. Hydrophilic colloid shall be applied at the rate recommended by the manufacturer, using hydraulic equipment suitable for thoroughly mixing with water. A uniform mixture shall be applied over the area.

3.2.4 Rolling. Immediately after seeding, firm entire area except for slopes in excess of 3 to 1 with a roller not exceeding 90 pounds for each foot of roller width.

3.2.5 Erosion Control Material. Install in accordance with manufacturer's instructions, where indicated or as directed by the Contracting Officer.

3.2.6 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 shall be kept actively growing and not allowed to dry out.

3.3 PROTECTION OF TURF AREAS

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

3.4 Not Used.