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E. The diameter of all plant holes (trees and shrubs) shall be two times the diameter of the root ball or plant container (for container grown plants). Fill the void in the planting hole with top quality topsoil. F. Set plants straight and level such that after settlement, the plant crown will stand one to two inches above grade. Set each plant in the center of the pit. G. Evenly space ground cover plants in accordance with the Drawings. H. Fertilize all upland plants at least once to ensure proper growth until the maintenance period begins. Notify the ENGINEER prior to applying the fertilizer. Immediately after fertilizer application, provide a written certification to the ENGINEER that the fertilizer was applied per the Specifications — payment for this fertilization will not be issued without this certification. Fertilize so that runoff of fertilizer -laden water into water bodies does not occur. 3.3 PLANTING AREAS A. Planting areas in general, are shown on the Drawings. 3.4 TEMPORARY IRRIGATION SYSTEM A. If deemed necessary by the Landscaper, design, furnish, install, and maintain a temporary irrigation system or provide other means to water and maintain all landscape items/planting areas during the maintenance and warranty period. CONTRACTOR may use water from Shallow Marsh #2. The OWNER will not provide electricity. Temporary facilities shall not conflict with the site's operation and maintenance. There is no set number of irrigation events in this Contract. Irrigate as many times as necessary to keep all landscape items/planting areas alive and healthy for the entire landscape maintenance and warranty period. Increase irrigation events as required during all drought periods and at no additional cost to the OWNER. 3.5 THE LANDSCAPE MAINTENANCE AND WARRANTY PERIOD A. Maintenance and Warranty Period: The maintenance and warranty period for all landscaping shall run consecutive and the duration is nine months, beginning on the date of Final Acceptance of the planting portion by County staff. During the nine- month maintenance and warranty period, operate and maintain the temporary irrigation facilities, maintain the plantings, and guarantee that: 1. Eighty-five (85) percent of the planted individuals become established and show signs of normal growth, based upon standard growth parameters such as height, base diameter, or canopy circumference; and Last revised 9/18/2018 02235-5 SHALLOW MARSH 2 1 \public works\keithm\stormwater projects\osprey acres\work orders\gk environmental\gke 2\02235 - landscaping.doc