Propane (LPG) storage in Rialto is governed by Cal. Fire Code Chapter 61 (Liquefied Petroleum Gases), adopted by reference under Rialto Mun. Code Ch. 15.28. Residential propane cylinders ≤2.5 lb. propane each are essentially unregulated; storage beyond that triggers permit, setback, and placement rules. Commercial/industrial bulk storage above 125 gal. requires a Rialto Fire operational permit and engineered separation distances.
Under Cal. Fire Code §6101 et seq. (Ch. 61 LPG), residential dwellings may have up to 2 cylinders of propane (typically the standard 20-lb. BBQ cylinder) without a permit, but stored cylinders must be: outdoors, upright, not on roofs or in basements, kept away from heat sources, and not stored within 5 ft. of a property line / 10 ft. of doorways or operable windows. Cylinders inside a residence may be the small ≤2.5 lb. canisters only (CFC §6109.4). Aggregate quantities above 720 lb. (~125 gal.) require a fire operational permit under CFC §105.5.30 and separation distances per CFC Table 6104.3 (10–50+ ft. from buildings/property lines depending on tank size). Bulk propane plants and dispensing stations require additional siting, separation, and safety equipment per CFC §6107. Rialto's heavy industrial / warehouse zoning (I-10 freight corridor) means many distribution facilities use forklift-cylinder cabinets which must meet CFC §6109.13 outdoor cabinet rules.
Storage violations are infractions or misdemeanors under Rialto Mun. Code §1.16 (up to $1,000 / 6 months) and may trigger immediate red-tag stop-use orders by the fire marshal. Operation of a permit-required LPG facility without a permit can result in immediate shut-down plus civil penalties.
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