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City of Stockton <br /> Fire Prevention Division <br /> F 345 North E/Dorado Street <br /> rn <br /> REYEN IO Stockton, CA <br /> (209) 937-827102 <br /> GUIDELINES FOR UNDERGROUND TANK REMOVAL <br /> It is the intent of these guidelines to add continuity to the procedures for underground tank <br /> removal. Be sure you have completed the necessary paperwork with the San Joaquin County <br /> Environmental Health Department prior to applying for City of Stockton permits. Also, please <br /> note that a minimum of 48 hours advance notice is required keeping in mind that the more <br /> advance notice given the more likely your inspection will be scheduled on the date of your <br /> choice. <br /> 1. A written safety plan is required that meets Cal-Osha requirements. <br /> 2. Post signs prohibiting any ignition source: <br /> a) Example: "No Smoking," "No Cutting and Welding," etc. <br /> 3. Provide a minimum rated 20BC or larger fire extinguisher at tank site. <br /> 4. You must have a calibrated, explosion-proof combustible gas meter on site. <br /> a) LEL and Oxygen must both be below 9% prior to removal; or <br /> b) Oxygen only, 5% on the oxygen for gasoline and diesel tanks; or <br /> C) LEL only, 1% on gasoline and diesel. <br /> d) Extra filters and equipment to calibrate instruments must be on site. <br /> e) Make and model number of instrument must be available to inspector. <br /> f) Appropriate measures are required to assure the LEL percentage is maintained <br /> during and after excavation. <br /> i) Monitor tanks once per hour for LEL and Oxygen after removal from <br /> ground while on site. <br />