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Home My WebLink AboutORDINANCES-1971-017-O-71Corrected 3-15-71 17-0-71 AN ORDINANCE Amending Section 28-5 of the Code of 04 the City of Evanston, 1957, as amended, by Adding a new Subsection A-340.0, and Renumbering Subsections A-340.0, A-340.19 A-340.2, A-350.0, A-350.1 and A-350.2. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, COOK COUNTY, ILLINOIS: SECTION 1: That Section 28-5 of the Code of the City of Evanston, 1957, as amended, be further amended by adding a new Subsection A-340.0, to read as follows: "Subsection A-340.0. SPRAYING AND COATING PROCESSES: SCOPE. This section contains regulations for particulate coatings; processes involving application of metallic . coatings; oil -base and other paints; catalyzed coat- ings; emulsion coatings; glass or mineral fiber; aerosols; lithographic and other inks, mastic, asphalt and like material when such material is applied or used regularly at a given site as in manufacturing or servicing industries. A-340.10 - EMISSION LIMITATIONS - Criteria in para- graphs A-340.11 and A-340.12 apply to plan examination. They are not intended to cover processes in which noxious, odorous, explosive or toxic materials are to be used. In such processes the design criteria for emission control provisions will be subject to approval by the director. Approval will be based on the nature and quantity of the material used and the following sources of information: a) American Public Health Service; b) American Conference of Governmental Industrial Hygienists; c) .Dangerous Properties of Industrial Materials, and Edition: d) The manufacturer of the materials used in the process; and e) Other agencies or authorities of recognized standing or experience. • Approval by the director of processes in which nox- ious, odorous, explosive, or toxic materials are to • be used shall not relieve any person from meeting the requirements of Section A-310.1. A-340.11•• PARTICULATE EMISSION - Particulate shall include liquids, condensable at 60 degrees F., exclusive of uncombined water. Particulate emission shall not exceed 0.10 grains per standard cubic foot of exhaust gas, calculated on the basis of minimum velocity requirements hereinafter established. A-340.12 - COMBUSTIBLE EMISSION - The maximum con- centration of combustible gases shall not exceed ten percent of the lower explosion limit for the gas mixture. (Refer to Appendix C of N.F.P.A. f#86A - Ovens and Furnaces.) A-340.13 - EMISSION CONTROL EQUIPMENT - Emission control equipment shall be provided for each spray- ing and coating process whenever the amount and type of material used is such as to constitute an.air pollution problem or the amount used is in excess of one gallon of volatile materials in any 24-hour period. A-340.14 - EMISSION CONTROL EQUIPMENT FUNCTION AND BASIC DESIGN CRITERIA - • a) It shall be the principal function of the emission control equipment to: 1. capture in a moving airstream the air- borne process materials which are not consumed in the process, and provide for partial removal of the air contam- inants from the airstream prior to its discharge to the outdoor atmosphere. 2. dilute the volatile materials to safe, unobjectionable levels. Typical emis- sion control equipment shall consist of dry -type air filter spray booth, water - wash air filter spray booth, downdraft spray gratings with a dry filter or water -wash air filter, and combinations of such equipment especially designed for a particular process, including travelling spray booths and similar special facilities. b) The quantity required to capture the uncon- sumed airborne process materials, in the absence of any larger air requirements, shall be based upon maintaining an average airstream velocity of 100 feet per minute through the larger of the following: • - 2- 046 • 1. the total gross area of all entrances to 049 the equipment which are open during normal operation; or 2. the total gross area of the largest cross- section perpendicular to flow within the equipment; deductions from the gross cross- section in computing this area will be allowed only for non -removable building structural members. c) Air exhausted from the process shall not be recirculated within the building. d) For materials containing highly volatile sol- vents with no oil binders, as in lacquers and resins, a water -wash air filter unit shall be provided whenever five gallons or more of such material is used per eight hour shift at each processing installation. For processes using less than five gallons of these materials per eight hour shift at each processing installa- tion, a dry -type air filter may be used. e) For application of materials other than those • in A-340.14d, a water -wash air filter unit shall be provided whenever ten gallons or more of material is used per eight hour shift at each processing installation. For processes using less than ten gallons of materials, other than those in A-340.14d per eight hour shift at each processing installation, a dry - type air filter may be used. f) The use of dry baffles alone to filter waste process materials from the exhaust airstream is prohibited. A-340.15 - SPRAY BOOTH DESIGN - The ventilation of spraying and coating process areas shall comply with the following requirements: a) All spraying areas shall be provided with positive mechanical ventilation adequate to prevent the dangerous accumulation of vapors, and to safely remove such vapors to a safe location; • -3- • • b) Such mechanical ventilation shall be kept in operation at all times while the spraying operations are being conducted, and for a sufficient time thereafter to allow vapors from drying coated articles and finishing material residues to be exhausted; c) Each process area shall have an independent exhaust duct system discharging to the vent- ilation requirements of this code. Multiple cabinet spray booths in which identical spray finishing materials are used with a combined frontal area of not more than 18 square feet, may have a common exhaust. If more than one fan serves one spray area, all fans shall be so inter -connected so that one fan cannot operate without operating all inter -connected fans. A-340.16 - DRY -TYPE AIR FILTER INSTALLATIONS - All dry -type air filter installations shall be equipped with an air pressure differential guage for accurately indicating when filters should be replaced. The min- imum allowable differential pressure shall be not less than 1/4 inch W.G. If the director so requires, the differential guage shall be suitably interlocked with the exhaust fan. A-340.17 - WATER -WASH TYPE AIR FILTERS - Water cir- culation systems shall be of sufficient capacity to provide a continuous, effective water washing action at the exhaust openings of the spray booth. A-340.18 - DOWNDRAFT SPRAY CAPTURING SYSTEMS - If spraying is done in open areas of a building over a grating, the grating shall be larger than the object being sprayed, and the object being sprayed shall rest entirely within the grating boundaries. A-340.19.- DUCTS AND VENTS - The process exhaust shall not discharge below any building openings or below the roofline of any surrounding building within a radius of 100 feet measured horizontally." SECTION 2: That Section 28-5 of the Code of the City of Evanston, 1957, as amended, be further amended as follows: 0 S rt -4- • • (a) Existing Subsection A-340.0 be renumbered to read: "Subsection A-350.0. Responsibility. for Equipment and its Operation." (b) Existing Subsection A-340.1 be renumbered to read: "A-350.1 - Equipment Operator's Responsi- bility." (c) Existin Subsection A-340.2 be renumbered to read: "A-350.2 - Owners' or Agents' Responsi- bility." (d) Existing Subsection A-350.0 be renumbered to read: "Subsection A-360.0 - Violations and Penalties." (e) Existing Subsection A-350.1 be renumbered to read: "A-360.1 - Violations:" (f) Existing Subsection A-350.2 be renumbered to read: "A-360.2 - Penalties for Violations." SECTION 3: This ordinance shall be in full force and effect from and after its passage, approval and publication in pamphlet form in the manner provided by law. Introduced March 15 Adopted March 22 Attest: Maurice F. Brown City Clerk Approved as to form: 1971 1971 Approved March22 1971 Edgar Vanneman,Jr. Mayor Jack M. Siegel Corporation Counsel -5-