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City of Stockton <br />I fire Prevention Division <br />345 North E/ Dorado Street <br />rn Stockton, CA 95201 <br />PREVENTION (209) 937-8271 <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 />1 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, i% 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 />fl Appropriate measures are required to assure the LEL percentage is maintained <br />during and after excavation. <br />1) Monitor tanks once per hour for LEL and Oxygen after removal from <br />ground while on site. <br />