32 92 19 - Seeding.pdf

32 92 19 – SEEDING

Herbert, Rowland & Grubic, Inc. 32 92 19 - 1 009280.0426

SECTION 32 92 19 – SEEDING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Seeding.

2. Mulching.

3. Maintenance.

B. Related Sections:

1. Section 32 91 13 – Soil Preparation

2. Section 32 91 19 – Landscape Grading

3. Section 32 92 23 – Sodding.

1.2 REFERENCES

A. Pennsylvania Department of Transportation (PennDOT) Publication 408 Specifications.

B. Pennsylvania Seed Act of 1965, Act 187, as amended.

C. Agricultural Liming Materials Act of 1978, P.L. 15, No. 9 (3 P.S. 132-1), as amended.

D. Pennsylvania Soil Conditioner and Plant Growth Substance Law, Act of December 1, 1977, P.L. 258, No. 86 (3 P.S. 68.2), as amended.

E. Rules for Testing Seeds of the Association of Official Seed Analysts.

1.3 SUBMITTALS

A. Section 01 33 00 – Submittal Procedures: Requirements for submittals.

B. Samples:

1. When directed, furnish three strips of sod, 4½" feet long by 12" wide, laid on 3" of topsoil and tamped in place. The samples shall be representative of the sod and workmanship to be provided.

2. Advise the Engineer of the location of the field, and area within the field, from which the sod is to be taken for approval.

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C. Certificates:

1. Prior to use or placement of material, submit certifications of material composition of the following for approval:

b. Fertilizer.

c. Lime.

d. Seed mixture(s).

1.4 QUALITY ASSURANCE

A. Provide seed mixture in containers showing percentage of seed mix, germination percentage, inert matter percentage, weed percentage, year of production, net weight, date of packaging, and location of packaging.

B. Perform Work in accordance with PennDOT and Elizabethtown Area Water Authority standard.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Section 01 61 00 – Product Requirements: Product storage and handling requirements.

B. Deliver seed fully tagged and in separate packages according to species or seed mix. Seed which has become wet, moldy, or otherwise damaged in transit or storage, will not be accepted.

C. Deliver fertilizer in waterproof bags showing weight, chemical analysis, and name of manufacturer.

1.6 MAINTENANCE SERVICE

A. Section 01 73 00 – Execution Requirements: Requirements for maintenance service.

B. Maintain seeded areas immediately after placement until grass is well established and exhibits vigorous growing condition.

PART 2 - PRODUCTS

2.1 SEED

A. Seed shall conform to Section 804.2(b), Publication 408 Specifications.

2.2 SEED FORMULAS

A. See Seeding Schedule on the Contract Drawings.

B. Seed formula and species shall conform to the PennDOT formula identified on the Contract Drawings, and in Section 31 25 00 – Erosion and Sedimentation Controls.

2.3 INOCULANT

A. Inoculant shall conform to Section 804.2(c), Publication 408 Specifications.

Herbert, Rowland & Grubic, Inc. 32 92 19 - 3 009280.0426

B. Protect inoculated seed from prolonged exposure to sunlight prior to sowing.

C. Reinoculate seed not sown within 24 hours following initial inoculation.

2.4 MULCHING MATERIALS

A. Mulches for seeded areas shall be one, or a combination of, the following:

1. Hay:

a. Cured to less than 20% moisture content by weight.

b. Contain no stems of tobacco, soybeans, or other coarse or woody material.

c. Timothy hay or mixed clover and timothy hay.

2. Straw:

a. Cured to less than 20% moisture content by weight.

b. Contain no stems of tobacco, soybeans, or other coarse or woody material.

c. Wheat or oat straw.

3. Wood Cellulose:

a. No growth or germination inhibiting substances.

b. Green, air dried. Packages not exceeding 100 pounds.

c. Requirements:

1) Moisture content: 12% + 3%

2) Organic Matter: 98.6% + 0.2% on the oven dry basis.

3) Ash content: 1.4% + 0.2%

4) Minimum Water-Holding Capacity: 1000%

PART 3 - EXECUTION

3.1 EXAMINATION

A. Section 01 73 00 – Execution Requirements: Verification of existing conditions before starting work.

B. Verify prepared soil base is ready to receive the Work of this section.

3.2 SEEDING

A. See Seeding Schedule on the Contract Drawings.

B. Uniformly sow specified seed mix by use of approved hydraulic seeder, power-drawn drill, power-operated seeder, or hand-operated seeder or by hand. Do not seed when winds are over 15 mph.

C. Upon completion of sowing, cover seed to an average depth of 1/4" by hand reraking or approved mechanical methods.

Herbert, Rowland & Grubic, Inc. 32 92 19 - 4 009280.0426

3.3 MULCHING

A. Mulching within 48 hours of seeding.

B. Place hay and straw mulch in a continuous blanket at the minimum rate indicated in the Seeding Schedule on the Contract Drawings.

C. Anchor hay or straw mulch by use of wood cellulose fiber hydraulically at the rate indicated in the Seeding Schedule on the Contract Drawings.

1. A light covering of topsoil may be used for anchorage when the size of the area precludes the use of mechanical equipment.

2. Incorporate as an integral part of the slurry after seed and soil supplements have been thoroughly mixed.

D. When mulch is applied to grass areas by blowing equipment, the use of cutters in the equipment will be permitted to the extent that a minimum of 95% of the mulch is 6" or more in length. For cut mulches applied by the blowing method, achieve a loose depth in place of not less than 2".

3.4 MAINTENANCE

A. Maintenance includes watering, weeding, cleanup, edging and repair of depressions, washouts or gullies.

B. Those areas which do not show a prompt catch or grass within 14 days of seeding or sodding shall be reseeded or resodded until complete grass catch occurs.

3.5 SEEDING SCHEDULE

A. Refer to Contract Drawings for seeding schedule.

END OF SECTION 32 92 19