SECTION 02935 PAV 2008.doc

SECTION 02935

INSTALLATION OF GRASS SOD

1. APPLICABLE PUBLICATIONS. The following publications of the issues listed below, but referred to thereafter by basic designation only, form a part of this specification to the extent indicated by the reference thereto:

1.1 Federal Specifications (Fed. Spec.):

O-F-241 Rev D

Fertilizers: Mixed, Commercial

1.2 American Sod Producers Association, Inc. (ASPA) Publication:

Guideline Specifications for sodding (undated)

2. SUBMITTALS.

2.1 Certificates of Conformance or Compliance: Before delivery, notarized certificates attesting that the following materials meet the requirements specified, shall be submitted for approval:

2.1.1 Sod.

2.1.1 Fertilizer.

3. DELIVERY, STORAGE AND HANDLING.

3.1 Delivery:

3.1.1 The contractor shall notify the Contracting Officer's Representative of the delivery schedule in advance so material may be inspected upon arrival at the job site. Unacceptable material shall be removed from the job site immediately.

3.1.2 During delivery; sod shall be protected from drying out and contamination.

3.1.3 Fertilizer and lime shall be delivered to the site in the original unopened containers bearing the manufacturer's guaranteed chemical analysis, name, trade name, trademark, and conformance to state and federal laws. In lieu of containers, fertilizer and lime may be furnished in bulk and a certificate indicating the above information shall accompany each delivery.

3.2 Storage:

3.2.1 Sod shall be sprinkled with water and covered with moist burlap, straw or other approved covering and protected from exposure to wind and direct sunlight. Covering shall be such that air can circulate and heating will not develop.

3.2.2 Lime and fertilizer shall be kept in dry storage away from contaminants.

3.2.3 Storage of materials shall be in areas designated or as approved by the Contracting Officer's Representative.

3.3 Handling: sod shall not be dropped or dumped from vehicles.

4. MATERIALS.

4.1 Sod: Sod shall be nursery grown field sod as classified in the ASPA Guideline Specifications for Sodding. the composition of the grass species in the sod shall be as follows:

Common Name (and Botanical Name)

Kentucky Bluegrass (Poa Pratensis) © 100 percent allowing varieties

Quality shall conform to ASPA Guidelines Specifications for Sodding.

4.2 Topsoil:

4.2.1 Topsoil shall be the existing surface soil stripped and stockpiled on the site.

4.2.1.2 The gradation of the topsoil furnished from sources outside the installation shall be determined by the Laboratory using the Bouyoucos Hydrometer Analysis conforming to the requirements of current A.A.S.H.O Designation T 88. The gradation of the topsoil shall be within the following ranges:

Sand (2,000mm to 0.050mm) 40% to 80%

Silt (0.050mm to 0.005mm) 10% to 30%

Clay (0.005mm and ssmaller) 10% to 30% except that when one-half of the sand content is larger than 0.500 mm the maximum sand content shall be 75 percent and the minimum clay content shall be 15 percent.

4.2.2 If additional topsoil is required, it shall be furnished by the contractor and shall be a natural, friable soil representative of productive soils in the vicinity. It shall be obtained from well drained areas and shall be free of admixture of subsoil and foreign matter or objects larger than one inch in any dimension, toxic substances, and any material or substance that may be harmful to plant growth.

4.3 pH Adjusters:

4.3.1 Lime shall be commercial available agricultural limestone and shall be ground to such fineness that at least 50 percent will pass a 100©mesh sieve and at least 98 percent will pass a 20 mesh sieve.

4.4 Fertilizer: Fertilizer shall be commercial grade, free flowing, uniform in composition and shall conform top applicable state and federal regulations. Granular fertilizer shall conform to Fed. Spec. O-F-241, Type I, Level B, and shall bear the manufacturer's guaranteed statement of analysis. Granular fertilizer shall contain a minimum percentage by weight of 10% nitrogen (of which 50 percent shall be organic), 6% available phosphoric acid, and 4% potash.

4.5 Water: Water shall contain no elements toxic to plant life and shall be obtained from the site at no cost to the contractor.

5. INSTALLATION.

5.1 Tillage: After the areas required to be sodded, have been brought to the grades as specified, they shall be thoroughly tilled to a depth of at least 4 inches by scarifying, disking, harrowing, or other approved methods. k All debris and stones larger than one inch remaining on the surface after tillage shall be removed.

5.2 Application of Fertilizer, pH Adjusters, and soil conditions:

5.2.1 Fertilizer shall be applied at the rate of 20 pounds per 1,000 square feet. In addition, lime will be added at the rate of 75 pounds per 1,000 square feet.

5.2.2 All fertilizers, pH adjusters, and soil conditioners shall be incorporated into the soil to a depth of at least 4 inches and may be incorporated as part of the tillage operations here-in-before specified. Immediately before sodding the soil shall be restored to an even condition.

5.3 Sodding: Sodding shall be accomplished in accordance with ASPA Guideline Specifications for Sodding. Additionally, sod shall always be laid at right angles to slopes of the flow of water. On slope areas, sodding shall be started at the bottom of the slope. After sod is laid all joints in the field of sod will be top dressed with topsoil having the same fertilizer and lime content as the prepared bed. The sides of all sod root system will be protected from exposure to air.

5.3.1 After the sodding operation has been completed, the edges of the sodded area shall blend smoothly into the surrounding area.

5.3.2 Watering shall be started immediately. Water shall be applied to the sodded areas at a rate sufficient to insure thorough wetting of the soil to a depth of at least 4 inches.

Watering operations shall be properly supervised to prevent run off. The contractor shall supply all pumps, hoses, pipelines, and sprinkling equipment. All areas damaged by the contractor's watering operations shall be repaired at no cost to the Government.

5.4 Protection of Sodded Areas: Immediately after sodding, the area shall abe protected against traffic or other use by erecting arricades, as required, and placing approved signs at appropriate intervals until final acceptance.

5.5 Restoration and Clean Up: Excess and waste material shall be removed daily. When turfing in an area has been completed, the area shall be cleaned of all debris and excess material. Where existing turf areas have been damaged during turfing operations the contractor shall restore the areas to their original condition at this expense. At least one paved pedestrian access route and one paved vehicular access route to each building shall be kept clean at all times. Other paving shall be cleaned when work in adjacent areas is completed.

6. TURF ESTABLISHMENT PERIOD.

6.1 General:

6.1.1 The turf establishment period will be in effect until the turf has been mowed three times.

6.1.2 The contractor shall be responsible for the establishment and proper care of a stand of turf over the entire seeded, sodded, sprigged area.

6.2 Maintenance During the Establishment Period

6.2.1 s The contractor shall provide the following maintenance: Mowing, removal of excess clippings, eradication weeds, watering, fertilizing, over seeding and any other operation necessary to promote the growth of grass.

6.2.2 the sodded area shall be mowed to a height of 1-1/2" whenever the average height of the grass becomes 3 inches.

7. FINAL ACCEPTANCE:

7.1 General: Final inspection and acceptance will be at the end of the turf establishment period. Acceptance will be based upon a satisfactory stand of turf as defined in the paragraph, "Turf Establishment Period".

8. METHOD OF MEASUREMENT AND PAYMENT. All measurements shall be in units as identified in the appropriate SLINS in the Unit Price Schedule. Measurements for preparing payments shall be taken jointly with the Government Representative. payment for these items shall constitute full compensation for completed work including all labor and incidentals necessary to accomplish the work required by this section of the specifications.

END OF SECTION

02935 - 2