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LCon ENERGY <br /> - ASSOCIATES <br /> IN PARTNERSHIP WITH THE ENVIRONMENT <br /> GUIDELINES FOR UNDERGROUND TANK REMOVAL <br /> It is the intent of these guidelines to add continuity to the <br /> procedures for underground tank removal. Be sure you have <br /> completed the necessary paperwork with the County <br /> Environmental Health Department prior to applying for <br /> permits. Also, please note that a minimum of 48 hours <br /> advance notice is required, keeping in mind that the more advance <br /> notice given the more likely your inspection will be scheduled on <br /> the date of your choice_ <br /> 1 . A written safety plan is required that meets Cal-Osha <br /> 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 <br /> tank site. <br /> 4 . You must have a calibrated, explosion-proof combustible gas <br /> meter on site. <br /> a) LEL and Oxygen must both be below 9% prior to removal, <br /> or <br /> b) Oxygen only, 5% on the oxygen for gasoline and diesel <br /> tanks , or <br /> c) LEL only, 1% on gasoline and diesel. <br /> d) Extra filters and equipment to calibrate instruments <br /> must be on site. <br /> e) Make and model number of instrument must be available <br /> to inspector. <br /> f) Appropriate measures are required to assure the LEL <br /> percentage is maintained during and after excavation. <br /> 1) Monitor tanks once per hour for LEL and Oxygen <br /> after removal from ground while on site. <br /> 5 . All tanks and connecting lines shall be purged of the product <br /> and rinsate material . Rinsate material shall be handled as a <br /> hazardous waste: <br /> a) Requirement for dry ice use: <br /> 1) 15 lbs. per 1 , 000 gallon capacity for diesel tanks. <br /> 2) 30 lbs . per 1, 000 gallon capacity for gasoline tanks . <br /> P.O. Box 1257 • Stockton. California 95201 • Number One, Port Road 21. Port of Stockton • Stockton. California 95203 <br /> (209) 463-7108 • FAX (209) 463-2712 <br />