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Contractor may choose the method of eradication, however, may not damage the turf. 17.3.2 Any broadleaf and/or turf type weeds shall be eradicated immediately upon notice. The Contractor may choose the method of eradication, however, may not damage the turf. 17.4 Sport turf shall be kept pest free of disease and rodents at all times. 17.4.1 The Contractor shall be responsible for identifying and treating any diseases or rodents immediately upon notice. 17.5 Sport Turf Renovation-Overseeding 17.5.1 Sport/Priority turf shall be renovated-overseeded each year per the Sport/Priority Turf Annual Schedule. All seed quantities and type specified shall be verified by the Director's Representative prior to any applications. The process for renovation- overseeding shall be as follows: 17.5.2 Contractor shall install a 6' high temporary construction fence around the sport/priority turf areas prior to commencing renovation-overseeding work. Note, the fence shall be installed on the perimeter of the sport/priority turf to be renovated-overseeded in accordance with the park map depicting the sport/priority turf areas. 17.5.3 Turf shall be mowed down to 1/4". All turf clippings shall be removed. 17.5.4 Turf shall be aerated using the Ryan piston driven aeration equipment. Contractor shall make two -passes in different directions per the Director's Representatives direction. 17.5.5 Turf shall then be verticut using the greens mower with verticut reels (straight blades 1.5" to 2" apart) Following verticutting all turf clippings shall be removed. 17.5.6 Contractor shall coordinate with the Irrigation Consultant to confirm all irrigation has been tested and restored to original design specifications prior to overseeding. 17.5.7 Once the Irrigation Consultant verifies the irrigation system is working efficiently, the Contractor shall evenly overseed the turf using a) Stover Seed Company's Grand Slam FS in the fall/winter at a rate of 350 pounds per acre; and, b) Stover Seed Company's Pro Sportfield Extreme in the spring/summer at a rate of 65 pounds per acre. 17.5.8 Immediately after overseeding the Contractor shall evenly apply 1/4" minus STA approved compost topper from R&S Soils to all turf applied at a rate of 35 cubic yards per acre mixed with California Organic 7-1-2 Phyta Boost organic fertilizer at a rate of 600 pounds per acre (35 c.y. top dress mix/600# 7-1-2 organic fertilizer). 17.5.9 Immediately following applying topper the Contractor shall coordinate with the Irrigation Consultant to program irrigation controllers to irrigate the seeded areas. The irrigation programs shall be set to maximize germination of seed. Once the renovation process is complete, the Irrigation Consultant shall retake control of the irrigation programming. 17.6 Overseeding Germination Guarantee 17.6.1 The Contractor shall guarantee 100% uniform germination within 10 weeks from the time the first application of seed or will sod any thin or bare areas with "thick cut" (thickest available cut) West Coast Turf Improved Kikuyu during warm season and West Coast Turf Improved Kikuyu Sod that has been "cropped over" with perennial rye grass. Renovation must be completed within three months of field City of Santa Ana RFP 19-093 Page 21