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Non-Professional Services Agreement between July 6, 2021 <br />City of San Leandro and Redwood Painting Company, Inc. Exhibit A Page 12 of 24 <br />D. Place cotton waste, cloths and material which may constitute fire hazard in <br />closed metal containers and remove daily from site. <br />E. Remove electrical plates, surface hardware, fittings, and fastenings, prior to <br />application of coating operations. Carefully store, clean, and replace on <br />completion of coating in each area. Do not use solvent or degreasers to clean <br />hardware that may remove permanent lacquer finish. <br />3.02 GENERAL PREPARATION <br />A. Prepare surfaces in accordance with coating manufacturer's instructions, unless <br />more stringent requirements are specified in this Section. <br />B. Protect following surfaces from abrasive blasting by masking, or other means: <br />1.Threaded portions of valve and gate stems, grease fittings, and identification <br />plates. <br />2.Machined surfaces for sliding contact. <br />3.Surfaces to be assembled against gaskets. <br />4.Surfaces of shafting on which sprockets are to fit. <br />5.Surfaces of shafting on which bearings are to fit. <br />6.Machined surfaces of bronze trim, including those slide gates. <br />7.Cadmium-plated items except cadmium-plated, zinc-plated, or sherardized <br />fasteners used in assembly of equipment requiring abrasive blasting. <br />8.Galvanized items, unless scheduled to be coated. <br />C. Protect installed equipment, mechanical drives, and adjacent coated equipment <br />from abrasive blasting to prevent damage caused by entering sand or dust. <br />D. Concrete: <br />1.Allow new concrete to cure for minimum of 28 days before coating. <br />2.Clean concrete surfaces of dust, mortar, fins, loose concrete particles, form <br />release materials, oil, and grease. Fill voids so that surface is smooth. Etch or <br />brush off-blast clean in accordance with SSPC SP-7 to provide surface profile <br />equal to 40 to 60 grit sandpaper, or as recommended by coating <br />manufacturer. All concrete surfaces shall be vacuumed clean prior to coating <br />application. <br />E. Ferrous metal surfaces: <br />1.Remove grease and oil in accordance with SSPC SP-1. <br />2.Remove rust, scale, and welding slag and spatter, and prepare surfaces in <br />accordance with appropriate SSPC standard as specified. Convert and treat <br />rust pitting to ensure it will not form under the coatings. <br />3.Abrasive blast surfaces to near white prior to coating. <br />4.When abrasive blasted surfaces rust or discolor before coating, abrasive blast <br />surfaces again to remove rust and discoloration. <br />5.When metal surfaces are exposed because of coating damage, abrasive blast <br />surfaces and feather into a smooth transition before touching-up. <br />636