ATTACHMENT II .pdf

ATTACHMENT II - MAINTENANCE REQUIREMENTS FOR THE NEC SOUTH AND

WEST SIDE LAWN

A. TYPICAL CROSS SECTION (including the drainage system):

B. REGULAR MAINTENANCE WORKS FOR THE LAWN AREA

These are a set of minimum typical procedures to be regularly performed on the grass areas, they are compulsory, and they are the contractor responsibility.

B.1 IRRIGATION is to be perform regularly, according to the season and the needs of the plant.

The necessary quantity of water will be adjusted based on the rain volume. The irrigation schedule will be determined by the local conditions at any given time.

B.2 GRASS CUTTING will be performed regularly, according to the season, the growth rate and the use of the grounds.

The grass will be maintained at a height of 3.5 to 4.5 cm (1” # to 1” ¾). For each cutting process, no more than 1/3 of the grass blade length will be remove.

The number of the cutting passes shall be adjusted to maintain the grass at a height of maximum

3.5 to 4.5 cm.

Lawn mower blades should always be sharp.

All mowers will have collecting baskets and the cut grass will be disposed of the Embassy premises by the contractor at his expense.

The lawn mowers used will be suitable to the purpose of the needed maintenance procedure

(current and in preparation o scheduled events).

The Contractor will perform the lawn mowing in such manner as to:

keep the adequate grass height;

stimulate the growth of the grass;

preserve an aesthetic appearance.

B.3. RECOVERY AFTER EVENTS PERFORMED ON THE LAWN refers to the repair of the small surfaces damaged during the event: broken and pulled off grass and damages to the soil (level and flatness damage).

The structure of the soil will be repaired and the surface of the soil will be filled with a mixture of sand and grass seeds. The area will then be watered in order to facilitate grass germination and growth.

For damaged sections larger than 15 – 20 cm (6 to 8 inches) the repair can be performed using grass rolls. Grass rolls used should observe the original floristic and soil structure.

C. EXCEPTIONAL MAINTENANCE WORKS

C.1 SOIL AERATION AND LOOSENING shall be performed regularly, in order to lessen the degree of soil compactness, to improve the gas exchange between soil and surrounding air and to improve the draining flow and the access of roots within the soil.

C.2. TECHNOLOGICAL TREATMENT WITH DRAIN SUBSTANCES shall be performed in order to obstruct / cover the shallow to average holes resulted in the aeration procedure. To be performed regularly, at least once a year.

C.3 RE-SEEDING AND OVER-SEEDING shall be performed if needed in order to correct / maintain the grass density and consistency. It will be done whenever the grass density decreases under 90%. Only licensed seeds, with identical composition as the original lawn shall be used.

C.4 DIMINISHING MOSS refers to the disposing of the decaying organic debris at the base of the grass stem. This task will be performed using specific equipment.

C.5 TREATMENTS AGAINST LAWN DISEASES AND PESTS shall be performed either preventive or curative. The active chemicals shall be selected according to the disease / pest in question and will have to be approved for lawn treatment. Preventive treatments use a larger range chemical. Only lawn-use approved/certified (by the manufacturer and the COR) chemicals will be employed; the quantity and dosage will observe the manufacturer’s directions, mentioned on the product label or pamphlet, and by mechanical application.

C.6 SELECTIVE HERBICIDE (WEED KILLERS) TREATMENT: to fight invading weeds

(any plant growing on the lawn and different of the species included within the design lawn).

The treatment should be curative, applied any time it is needed, locally or on all the grass area.

Only lawn use approved chemicals will be employed; the quantity and dosage will observe the manufacturer’s directions, mentioned on the product label or pamphlet, and the application will be mechanical.

C.7 FERTILIZATION RECOVERY shall be performed only during the active growing period of the grass, by applying specific fertilizing materials in order to boost the plant’s needed nutrients.