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decision, and the Contractor shall accept his interpretation as final and binding. See paragraph 3.05 for additional temperature and humidity limitations. M. A daily inspection of the separators and compressed air supply will be required to insure cleanliness of all compressed air supplied for abrasive blasting. This test will be performed by a blotter test. A clean white Blotter is held, no more than 18 inches, from the air supply, down stream of moisture and oil separators. The air supply is directed at the Blotter for approx. (2) two minutes. The Blotter is then examined visually for signs of oil and moisture. A clean blotter at test completion means a successful passing of the air supply test. Failure to pass the compressed air test will be justification for rejection of abrasive blasting performed that day. The Engineers discretion will be final in this determination. 3.04. APPLICATION A. Apply coatings in accordance with manufacturer's instructions. B. Paint metal unless specified otherwise. C. Spot repair and recoat all exterior and interior surfaces where the existing coating system is damaged from welding or other means. D. Mix and thin coatings, including multi -component materials, in accordance with manufacturer's instructions. Apply each coat at proper consistency. E. Tint each coat of paint slightly darker than preceding coat. When multiple coats of same material are specified, tint prime coat and intermediate coats with suitable pigment to distinguish each coat. F. Keep containers closed when not in use to avoid contamination. G. Do not use mixed coatings beyond pot life limits. H. Use application equipment, tools, pressure settings, and techniques in accordance with manufacturer's instructions. I. Uniformly apply coatings at spreading rate required to achieve specified DFT. Thickness of coatings and paint shall checked with a non-destructive, magnetic -type thickness gauge, as per SSPC-PA 2 Procedure for Determining Conformance to Dry Coating Thickness Requirements. Dry film thickness (DFT) readings of the coating are taken to provide reasonable assurance that the specified minimum DFT has been achieved. A minimum of five (5) separate spot measurements shall be made over every 100 square feet in area. Each spot measurement shall consist of an average of three (3) gage readings next to each other no further than six (6) inches apart. Each spot measurement must be within the specified minimum thickness. The single gage readings, however, making up the spot measurement, are permitted to be no less than 80 percent of the specified minimum thickness. J. Do not apply coatings on surfaces that are not sufficiently dry. Allow surfaces to dry, except where coating manufacturer requires surface wetting before coating. K. Drying and Recoating: 1. Allow each coat of finish to dry before following coat is applied, unless directed otherwise by manufacturer. P05367-2016-000 / Mounds View 09 96 20 - 11 PRESSURE VESSEL COATING 2019 WTP Rehabilitation SYSTEMS