32 92 19 - Seeding-R.pdf
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- Blue Ball Water Storage Tank Painting Project
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- Lancaster County, Blawnox Borough, Pennsylvania
About this file
This is a specification document for seeding and landscape restoration work prepared by Herbert, Rowland & Grubic, Inc. for the Weaverland Valley Authority's North Earl Street Low Pressure Sanitary Sewer Extension Project (Project No. 011361.0461) located in Lancaster County, Pennsylvania. The specification details requirements for grassed area restoration and lawn maintenance on a lump sum basis, encompassing fertilizing, seeding, hydroseeding, mulching, and ongoing maintenance activities. The work includes soil preparation with lime and fertilizer application mixed into the upper two inches of topsoil, seed application in two intersecting directions at manufacturer-recommended rates, immediate mulching to one-eighth inch thickness following seeding, and water saturation to four inches of soil depth. Erosion fabric installation is required with minimum 12-inch overlaps secured at 36-inch intervals with stakes, and jute matting must be laid smoothly with top ends buried in six-inch deep trenches. Planting must occur during the state-designated planting season, with work not performed immediately following rain, during excessively dry conditions, or when wind speeds exceed 12 mph. The specification requires immediate reseeding of bare spots and repair of any washouts or gullies that develop.
The seed mixture must comply with PENNDOT Publication 408 specifications and be delivered in sealed containers showing germination percentage, inert matter content, weed percentage, production year, net weight, packaging date, and packaging location. Mulching material must be oat or wheat straw free from weeds and foreign matter, with hay and chopped cornstalks explicitly prohibited. Both the seed supplier and installer must have minimum three years' experience in their respective specialties and submit manufacturer's certificates verifying all products meet or exceed specified requirements. Fertilizer must be delivered in waterproof bags with weight and chemical analysis information clearly marked. Water used must be clean, fresh, and free of growth-inhibiting substances. The specification defines acceptable and unacceptable plant materials, including a comprehensive list of weeds to be controlled, and requires jute erosion fabric to be an open weave type with softwood stakes and inorganic fiber string for installation.
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Text version
32 92 19 - SEEDING
Herbert, Rowland & Grubic, Inc. 32 92 19 - 1 011361.0461
SECTION 32 92 19 - SEEDING
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Fertilizing.
2. Seeding.
3. Hydroseeding.
4. Mulching.
5. Maintenance.
1.2 UNIT PRICE - MEASUREMENT AND PAYMENT
A. Grassed Areas (Lawn)/Landscape Restoration:
1. Basis of Measurement: By Lump Sum (LS).
2. Basis of Payment: Includes seeding, watering and maintenance as specified.
1.3 REFERENCES
A. N/A
1.4 DEFINITIONS
A. Weeds: Include Dandelion, Jimsonweed, Quackgrass, Horsetail, Morning Glory, Rush Grass, Mustard, Lambsquarter, Chickweed, Cress, Crabgrass, Canadian Thistle, Nutgrass, Poison Oak, Blackberry, Tansy Ragwort, Bermuda Grass, Johnson Grass, Poison Ivy, Nut Sedge, Nimble Will, Bindweed, Bent Grass, Wild Garlic, Perennial Sorrel, and Brome Grass.
1.5 SUBMITTALS
A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.
B. Product Data: Submit data for seed mix, fertilizer, mulch, and other accessories.
C. Manufacturer's Certificate: Certify Products meet or exceed specified requirements.
1.6 CLOSEOUT SUBMITTALS
A. N/A
1.7 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.
Herbert, Rowland & Grubic, Inc. 32 92 19 - 2 011361.0461
1.8 QUALIFICATIONS
A. Seed Supplier: Company specializing in manufacturing Products specified in this section with minimum 3 years’ experience.
B. Installer: Company specializing in performing work of this section with minimum 3 years’ experience.
1.9 DELIVERY, STORAGE, AND HANDLING
A. Section 01 61 00 - Product Requirements: Product storage and handling requirements.
B. Deliver grass seed mixture in sealed containers. Seed in damaged packaging is not acceptable.
C. Deliver fertilizer in waterproof bags showing weight, chemical analysis, and name of manufacturer.
PART 2 - PRODUCTS
2.1 SEED MIXTURE
A. As specified in PENNDOT Publication 408.
2.2 ACCESSORIES
A. Mulching Material: Oat or wheat straw, free from weeds, foreign matter detrimental to plant life, and dry. Hay or chopped cornstalks are not acceptable.
B. Water: Clean, fresh and free of substances or matter capable of inhibiting vigorous growth of grass.
C. Erosion Fabric: Jute matting, open weave.
D. Stakes: Softwood lumber, chisel pointed.
E. String: Inorganic fiber.
2.3 SOURCE QUALITY CONTROL
A. N/A
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verify prepared soil base is ready to receive the Work of this section.
Herbert, Rowland & Grubic, Inc. 32 92 19 - 3 011361.0461
3.2 FERTILIZING
A. Apply lime as needed.
B. Apply fertilizer as needed.
C. Apply fertilizer after smooth raking of topsoil.
D. Do not apply fertilizer at same time or with same machine used to apply seed.
E. Mix fertilizer thoroughly into upper 2 inches of topsoil.
F. Lightly water soil to aid dissipation of fertilizer. Irrigate top level of soil uniformly.
3.3 SEEDING
A. Apply seed at rate recommended by manufacturer, evenly, in two intersecting directions.
Rake in lightly.
B. Do not seed areas in excess of that which can be mulched on same day.
C. Planting Season: Per State standard.
D. Do not sow immediately following rain, when ground is too dry, or when winds are over 12 mph.
E. Immediately following seeding, apply mulch to thickness of 1/8 inches. Maintain clear of shrubs and trees.
F. Apply water with fine spray immediately after each area has been mulched. Saturate to 4 inches of soil.
3.4 HYDROSEEDING
A. N/A
3.5 SEED PROTECTION
A. Lay fabric smoothly on surface, bury top end of each section in 6 inch deep excavated topsoil trench. Overlap edges and ends of adjacent rolls minimum 12 inches. Backfill trench and rake smooth, level with adjacent soil.
B. Secure outside edges and overlaps at 36 inch intervals with stakes.
C. Lightly dress slopes with topsoil to ensure close contact between fabric and soil.
D. At sides of ditches, lay fabric laps in direction of water flow. Lap ends and edges minimum 6 inches.
Herbert, Rowland & Grubic, Inc. 32 92 19 - 4 011361.0461
3.6 MAINTENANCE
A. Immediately reseed areas showing bare spots.
B. Repair washouts or gullies.
3.7 SCHEDULE
A. N/A
END OF SECTION
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