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0 SAN JOAQUIN COUNT! ENVIRONMENTAL HEALTH DEPARTMENT yy 600 E Main Street Stockton -CA 95202 (209)468-3420 -Fax:(209)468-3448 - Web:www.sigov.orcdehd EMERGENCY RESPONSE INVESTIGATION REPORT:IINCLUDE CNRONOLOGICALHISTORY,RECOMMENDATIONS.CLEANUP e,d FIN&DISPOSITION) 7/11/11 Received a notification from Dennis Bock, Environmental Compliance from Costco at around 8.30 am. He informed me that during a scheduled repair 50 gallons of gasoline leaked from the 91 primary pipe at around 5.40 am. He said that City of Stockton Are department was nG0ed and responded at 6.30 am. When asked it he road notified the California Slate warning center he said he had not done that. I asked if he had a natiftabon protocol and it he was familiar with it. Dennis said he was making the natilication now. Arrived at the site at 9.00 am and met with Mr. Mathew Barge, Assistant general Manager of Costco. He irdormed me that approximately 100 galkms of 91 product leaked into the under dispenser containment for lisp#11/12 and approximately 53 gallons of it went into the catch basin of the oil/water interceptor. The gasoline had passed the interceptor and stopped at the first clean cut. Upon arrival I found that the leak had been stopped by Elite IV(UST repair contractor)and fine City of Stockton Fire department had used absorbent to contain the release. Wryen I asked Mr. Barge what he will do with the waste generated he said that the pads and booms are In the hazardous waste drum. Wnen asked what he did with the absorbent used he said that absorbent is not the usual material that they used so he did not knoo+what to do with it. He said he did not want to throw it in the trash. The used absorbent had been picked up by Elite IV rxew and was loaded in the back of Mr. Chuck Dowdy's truck pickup truck. I asked if this was the proper procedure of handling the waste generated and Mr. Barge said that he is familiar with little spill and had not,experienced one this big. He said that he is getting advice from con=-ate office. He asked what he should do wi ert the absorbent. I asked if he was the generator of the waste and he said yes. I told him that as a generator he should Wow Title 22 Hazardous Waste Regulation. Mr. Barge had his crew remove the used absorbent from Mr Dowdy's truck and put it in the hazardous waste labeled drums. I asked if the City of Stockton storm water agency had been natified and Mr. barge said no. l calked Richard Stiffler of City of Stockton Storm waste and notified him o3 the spill. Michelle Price from their agency came by and said that they recommend a hydra jet be used for the cleanup. She said that since rhe spill was contained before it reached their sever line they have nojuridiction. Safety Kleen was hired to perform cleanup. I was told that they were in route and will be here any minute. At around 2.00 pm Mike, manager camt'cAand told me that Safety Kleen is waiting on the victor truck and will be at the site at 3.00 pm at the earliest. MN 46 7/11/11 at 5.00pm Arrived on site, no one from Safety Kleen could be located. At approximately 5.50pm a crew from NRC arrived we evaluated spilt area and formulated a work plan. Later Damian Black From Safety Kleen arrived and was briefed on the corrective action that needed to be performed. Dispenser# I IM2 and appeared to be non contaminated. The on site interceptor was opened and all content removed. Approximately 100 ft of underground concrete pipe leading to and from interceptor and storm drain was hydro-flushed. All water used for cleaning was contained and spill area mitigated. Approximately 1400- 1500 gallons of water was sent off under manifest for proper disposal (see manifest'*002843501SKS). Clean up completed by 9.009m.Abated. HK pry' 7/20/11 Received disposal record and report from Harlin Knoll. Abated complaint. C Rev.08/16110 Page 3 013 ER Record