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UNUERGROUNDSTORAGETANK RESPONSE PLAN -PAGE 2 VL REPORTING AND RECORD KEEPING We will report/rccord any overfill,spill,or unauthorized release from a UST system as indicated in this plan. 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 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 not cause any deterioration of secondary containment,must be recorded in the facility's monitoring records. Monitoring rocords must include: D The UST operator's name and telephone number, Y A list of the types,quantities,and concentrations of hazardous substances released; A description of the actions taken to control and clean up the release; > The method and location of disposal of the released hazardous substances,and whether a hazardous waste manifest was or will be used; A description of actions taken to repair the UST and to prevent future releases; Y A description of the method used to reactivate interstitial monitoring after replacement or repair of primary containment. Reportable Releases: Any overfill,spill,or unauthorized release which escapes from secondary containment(or primary containtnent if no secondary containment exists),increases the hazard of lire or explosion,or causes any deterioration of secondary containment,is a reportable rcic&w. Reportable releases are also recordable. Within 34 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 release,investigate the release,and take immediate measures to stop the release. If necessary,or if required by the local agency,remaining stored product/wasto will be removed from the UST to prevent further releases or facilitate comoctive action, Van an emergency exists,we will notify the State Office of Emergency Services. 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 that the information is known at the time of filing the report: A The UST ownces or operator's name and telephone number; > A list of the types,quantities,and concentrations of hazardous materials released; i The approximate date of the release: D The date on which the release was discovered; D The date on which the release was stopped; S A description of actions taken to control and/or stop the release; y A description of corrective and remedial actions,including investigations which were undertaken and will be conducted to determine the nature and extent of soil,ground water or surface water contamination due to the release; i The mcthod(s)of cleanup implemented to date,proposed cleanup actions,and a schedule for implementing the proposed actions; D The methods)and location(s)of disposal of released hazardous materials and any contaminated soils,groundwater,or surface water. D Copies of any hazardous waste manifests used for off-site transport of hazardous wastes associated with clean-up activity; A description of proposed methods for any repair or replacement of UST system primary/secondary containment systems; > A description of additional actions taken to prevent future releases. We will follow the reporting procedures described above if any of the fol lowing conditions occur: A recordable unauthorized release can not he cleaned up or is still I under investigation within eight(R)hours of detection; D Released hazardous substances arc discovered at the UST site or in the surrounding arca; > Unusual operating conditions are observed,including erratic behavior of product dispensing equipment,sudden loss of product,or the unexplained presence of water in the tank,unless system equipment is found to be defective and is immediately repaired or replaced,and no leak has occurred; ? 'Monitoring results from UST system monitoring equipment/methods indicate that a release may have occurred,unless the monitoring equipment is found to be dcfocrive and is immediately repaired,recalibrated,or replaced,and additional monitoring does not confirm the initial results. 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 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 VII. OWNER/OPERATOR SIGNATURE CERTIFICATION;1 certify that the information provided herein is true and accurate to the best of my knowledge. OWNERIOPERATOR SIGNATURE � DATF, �J /� nTo OWNER/OPERATOR NAME(print) R71 OWNER/OPERATOR TITLE R72. Dennis Bock Costco Wholesale Environmental Compliance Manager (Agency Use Only) This plan has been reviewed and: ❑Approved ❑Approved With t anditions ❑Disapproved Local Agency Signature: _ Data UST Response rlan(3/2008)-3l3 BCE#10050