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Section 5704.2.11.4, Leak prevention, shall be amending by adding Section <br />5704.2.11.4.3, Observation wells, to read as follows: <br />"5704.2.11.4.3 Observation wells. Approved sampling tubes of a <br />minimum 4 inches in diameter shall be installed in the backfill material of each <br />underground flammable or combustible liquid storage tank. The tubes shall <br />extend from a point 12 inches below the average grade of the excavation to <br />ground level and shall be provided with suitable surface access caps. Each <br />tank site shall provide a sampling tube at the corners of the excavation with a <br />minimum of 4 tubes. Sampling tubes shall be placed in the product line <br />excavation within 10 feet of the tank excavation and one every 50 feet routed <br />along product lines towards the dispensers, a minimum of two are required." <br />Section 6103.2.1, Portable containers, shall be amended by adding Section <br />6103.2.1.8, Jewelry repair, dental labs and similar occupancies, to read as follows: <br />"6103.2.1.8 Jewelry repair, dental labs and similar occupancies. <br />Where natural gas service is not available, portable LP -Gas containers are <br />allowed to be used to supply approved torch assemblies or similar appliances. <br />Such containers shall not exceed 20 -pound (9.0 kg) water capacity. Aggregate <br />capacity shall not exceed 60 -pound (27.2 kg) water capacity. Each device shall <br />be separated from other containers by a distance of not less than 20 feet." <br />Section 6104.2, Maximum capacity within established limits, shall be amended <br />to add an exception 2 to read as follows: <br />"Exceptions: <br />"2. Except as permitted in Sections 308 and 6104.3.2, LP -gas containers <br />are not permitted in residential areas." <br />Section 6104.3, Container location, shall be amended to add Section 6104.3.3, <br />Spas, pool heaters, and other listed devices, to read as follows: <br />"6104.3.2 Spas, Pool Heaters, and Other Listed Devices. Where <br />natural gas service is not available, an LP -gas container is allowed to be used <br />to supply spa and pool heaters or other listed devices. Such container shall not <br />exceed 250 -gallon water capacity per lot. See Table 6104.3 for location of <br />containers. <br />"Exception: Lots where LP -gas can be off-loaded wholly on the <br />property where the tank is located may install up to 500 gallon above <br />ground or 1,000 gallon underground approved containers." <br />41 <br />