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point that it will damage or kill turf. Leaf litter that is removed from turf shall either be chopped and used on-site, or transported to a plant debris recycling facility. All turf areas shal l be cleanly edged to the inside (turfside) edge of any concrete or asphalt interface. All turf growing along public sidewalks and walkways shall be edged to maintain a crisp, clean edge along all such structures. Grass shall also be kept from overgrowing sprinkler heads. Edging shall also include trimming grass around trees, poles, utilities, and any other concrete pads within or immediately adjacent to the turf areas. Edging shall be done once per month during the months of November through March, and every two (2) weeks during the months of April through October. Edging shall be done by the use of power edgers or by hand. Soil steri lants or other herbicides shall not be used for edging. Care shall be taken to avoid damage by mowers to tree trunks, irrigation heads and any other utilities, facilities or structures within or adjacent to turf areas. Any damage caused by the Contractor's negligence shall be repaired at the Contractor's expense. Prior to mowing, the contractor shall insure that the mower is clean so that no roots, stolons, seeds or crowns of foreign grasses are introduced. All litter and debris in turf areas shall be picked up and disposed of properly. Litter and debris shall not be allowed to accumulate but shall be picked up and disposed of a minimum of once per week. The Contractor shall accomplish such litter and debris pickup prior to mowing to avoid shredding and dispersal of these materials. Turf fertilization shall be performed a minimum of twice per year with weed and feed, with the time to be determined with City staff. Fertilization shall be with a slow re lease, non-water-soluble, high nitrogen fertilizer as provided by the City. All excess chemicals shall be cleaned from benches, tables, BBQs, and pathways. Prior to lawn fertilization with granular-type fertilizers, the Contractor shall ensure that the root zone of the turfgrass is damp and that the grass itself is free of surface moisture. Lawns shall be watered immediately after fertilization to prevent burning the grass. Weed & feed, fertilization and aeration shall be done within 30 days of the City's request. Irrigation System Mainte nance The City shall be responsible for all maintenance of the irrigation system including piping, wiring, spray heads, electric valves, and automatic controllers. The irrigation system shall be inspected by the Contractor on a bi-monthly basis during the irrigation period. Inspections shall be documented on format that will be provided by the City and provided to the City once completed. During these inspections the contractor shall adjust the water budget to ensure the amount of water being RFP 55027 CITYWIDE TURF MAINTENANCE Page 57 of 63