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Utlderground Storage Tank Responsr n — Page 2 of 2
<br />VI. LEAK INTERCEPTION AND DETECTION SYSTEM
<br />This information is required 2gly for motor vehicle fuel UST systems constructed per the Alternate Construction Requirements of 23 CCR §2633, and only if the Leak
<br />Interception and Detection System (LIDS) does not meet the volumetric requirements of 23 CCR §2631(d)(1) through (5) (i.e., when accounting for rainfall and
<br />backfill material, the secondary containment volume is less than 100% of primary tank volume for a single UST; or in the case of multiple USTs in shared secondary
<br />containment, 150% of the largest primary tank volume or 10% of aggregate primary tank volume, whichever is greater).
<br />ATTACH AN ADDITIONAL PAGE TO THIS PLAN CONTAINING THE FOLLOWING INFORMATION:
<br />➢ The volume of the LIDS in relation to the volume of the primary container;
<br />➢ The amount of time the LIDS shall provide containment related to the time between detection of an unauthorized release and cleanup of the leaked substance;
<br />➢ The depth from the bottom of the LIDS to the highest anticipated level of groundwater;
<br />➢ The nature of the unsaturated soils under the LIDS and their ability to absorb contaminants or to allow movement of contaminants;
<br />➢ The methods and scheduling for removal of all hazardous substances which may have been discharged from primary containment and are located in the
<br />unsaturated soils between the primary containment and groundwater, including the LIDS sump.
<br />VII. REPORTING AND RECORD KEEPING
<br />We will report/record any overfill, spill, or unauthorized release from a UST system as indicated in this plan.
<br />Recordable Releases: Any unauthorized release from primary containment which the UST operator is able to clean up within eight (8) hours after the release was
<br />detected or should reasonably have been detected, and which does not escape from secondary containment, does not increase the hazard of fire or explosion, and does
<br />not cause any deterioration of secondary containment, must be recorded in the facility's monitoring records. Monitoring records must include:
<br />➢ The UST operator's name and telephone number;
<br />➢ A list of the types, quantities, and concentrations of hazardous substances released;
<br />➢ A description of the actions taken to control and clean up the release;
<br />➢ The method and location of disposal of the released hazardous substances, and whether a hazardous waste manifest was or will be used;
<br />➢ A description of actions taken to repair the UST and to prevent future releases;
<br />➢ A description of the method used to reactivate interstitial monitoring after replacement or repair of primary containment.
<br />Reportable Releases: Any overfill, spill, or unauthorized release which escapes from secondary containment (or primary containment if no secondary containment
<br />exists), increases the hazard of fire or explosion, or causes any deterioration of secondary containment, is a reportable release. Reportable releases are also recordable.
<br />Within 24 hours after a reportable release has been detected, or should have been detected, we will notify the local agency administering the UST program of the
<br />release, investigate the release, and take immediate measures to stop the release. if necessary, or if required by the local agency, remaining stored product/waste will
<br />be removed from the UST to prevent further releases or facilitate corrective action. If an emergency exists, we will notify the State Office of Emergency Services.
<br />Within five (5) working days of a reportable release, we will submit to the local agency a full written report containing all of the following information to the extent
<br />that the information is known at the time of filing the report:
<br />➢ The UST owner's or operator's name and telephone number;
<br />➢ A list of the types, quantities, and concentrations of hazardous materials released;
<br />➢ The approximate date of the release;
<br />➢ The date on which the release was discovered;
<br />➢ The date on which the release was stopped;
<br />➢ A description of actions taken to control and/or stop the release;
<br />➢ A description of corrective and remedial actions, including investigations which were undertaken and will be conducted to determine the nature and extent of
<br />soil, ground water or surface water contamination due to the release;
<br />➢ The method(s) of cleanup implemented to date, proposed cleanup actions, and a schedule for implementing the proposed actions;
<br />➢ The method(s) and location(s) of disposal of released hazardous materials and any contaminated soils, groundwater, or surface water.
<br />➢ Copies of any hazardous waste manifests used for off-site transport of hazardous wastes associated with clean-up activity;
<br />➢ A description of proposed methods for any repair or replacement of UST system primary/secondary containment systems;
<br />➢ A description of additional actions taken to prevent future releases.
<br />We will follow the reporting procedures described above if any of the following conditions occur:
<br />➢ A recordable unauthorized release can not be cleaned up or is still under investigation within eight (8) hours of detection;
<br />➢ Released hazardous substances are discovered at the UST site or in the surrounding area;
<br />➢ Unusual operating conditions are observed, including erratic behavior of product dispensing equipment, sudden loss of product, or the unexplained presence of
<br />water in the tank, unless system equipment is found to be defective and is immediately repaired or replaced, and no leak has occurred,
<br />➢ Monitoring results from UST system monitoring equipment/methods indicate that a release may have occurred, unless the monitoring equipment is found to be
<br />defective and is immediately repaired, recalibrated, or replaced, and additional monitoring does not confirm the initial results.
<br />Record Retention: Monitoring records and written reports of unauthorized releases must be maintained on-site (or off-site at a readily available location, if approved
<br />by the local agency) for at least 3 years. Hazardous waste shipping/disposal records (e.g., manifests) must be maintained for at least 3 years from the date of shipment.
<br />VIII. OWNER/OPERATOR SIGNATURE
<br />CERTIFICATION: I certify that the information provided herein is true and accurate to the best of my knowledge.
<br />OWNER/OPERATOR SIGNATURE
<br />DATE R70
<br />OWNER/OPERATOR NAME (print) R71.
<br />OWNER/OPERATOR TITLE R72
<br />Ian Moorhead
<br />Region Gasoline Environmental Compliance Mgr
<br />(Agency Use Only) This plan has been reviewed and: ❑ Approved ❑ Approved With Conditions ❑ Disapproved
<br />Local Agency Signature: Date:
<br />UN -022B - 2/2 www.unidoes.org Rev. 10/14/03
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