Item 22 - Natural Gas Fueling Station

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C. All filters and vessels shall be equipped with an automatic or manual blowdown valve and a drain line or hose routed the edge of the skid if not readily accessible. 3.0. Enclosure A. A totally enclosed weatherproof and sound -attenuating enclosure shall be provided for the compressor assembly, and ancillary equipment in accordance with the following requirements: B. Materials: All materials used shall be non-combustible or fire -rated materials. The enclosure shall be of welded steel construction. The enclosure base frame shall be fabricated of minimum 8 "channel and/or I- beam. Walls and roof material shall be heavy gauge steel for rigidity. Roof material shall be a minimum # 16-gauge steel. C. The enclosure shall have lockable steel doors to provide access to equipment for routine maintenance and inspections. The base frame shall be designed for the mounting of removable equipment assemblies. Plate walkway shall be provided. All interior floor areas, which are large enough to stand on, are to be covered with anti- skid floor plate. Anti-skid floor plates shall be removable, if necessary, for maintenance access. The roof shall be pitched for water run-off. A gauge panel viewing window shall be provided in the enclosure door or wall for the viewing of instruments without opening or entering the enclosure. All piping, and electrical connections shall be provided on the rear of the enclosure. D. Sound Attenuation: If necessary, all walls and roof of the compressor enclosure shall be lined with flame resistant sound attenuating material to minimize equipment noise levels to a maximum of 80 dB at ten (10) feet outside any enclosure wall. No octave band shall exceed the average of its neighbors by more than 5 db. E. Lights: If enclosure is intended for personnel entry, one (1) explosion proof (Class I, Division I or 2, group D) ceiling light shall be provided, complete with explosion proof wall mounted manual light switch, within the enclosure. F. Paint: Before painting, metallic surfaces shall be cleaned and free of mill scale, burrs, and sharp edges. All painted surfaces shall be prepared in accordance with the paint manufacturers written instructions. Finish shall be powder coated or paint as per the following: 1. Coat anti -corrosion, abrasion resistant industrial primer - 2 mils minimum dry film thickness. 2. 1 coat impact resistant, weather resistant high -quality gloss enamel - 1.5 mils minimum fry film thickness. 3. Minimum total dry film thickness 3.5. City of Santa Ana - RFP 20-095 CNG Fuel Station: Design, Build, Operate and Maintain 22