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F <br /> Margaret Lagorio EH <br /> From: Duncan Austin [daustin@waterboards.ca.gov] <br /> Sent: Wednesday, September 24, 2008 11:12 AM <br /> To: l�i Margaret Lagorio [EH]: <br /> Subject: Re: PG&E Transformer incident on Lorraine Avenue, Stockton <br /> i ! <br /> f <br /> Hi Margaret, G <br /> i <br /> The ',:scenario you describe all sounds 'reasonable to me. I appreciate you and your staff's } <br /> good work in making sure these spills,.are characterized and properly cleaned up! <br /> Duncan <br /> i <br /> Duncan Austin, P.E. <br /> Chief, Private sites Cleanup Unit I <br /> Central Valley Regional Water <br /> Quality Control Board <br /> F <br /> i <br /> >>> !'Margaret Lagorio [EH] " <MLagorio@sjcehd_com> 9/22/2008 3 :23 PM >>> <br /> Duncan, <br /> I called Brett Stevens today, because '-he had some involvement in the above incident in <br /> December 2007, and he said to contact ,.you. A vaulted PG&E transformer caught on fire and <br /> oil was spilled onto the nearby street. It was cleaned up (street and vault) . when they <br /> cleaned up the vault it was noticed that there was a small hole in the bottom. o£ the catch <br /> basin in the vault. Our staff felt some oil may have escaped into the native soil beneath <br /> the vault so they sent PG&E a notice to investigate further and copies to Regional Board <br /> and DISC. PG&E 'wants to hand auger down to six feet and collect soil samples from 3 feet <br /> and <br /> 6 feet to further investigate if there was a release to native soil. <br /> They'„only want to analyze for TPH as mineral oil with silica gel cleanup. They had a lab I <br /> analyze the oil released in December and the results were non detect for PCB's at 1 ppm so <br /> they :�are using that to support that there are no PCB's in the soil. If they find no TPH <br /> in the soil samples they propose to collect, they want to enter into a local agency <br /> cleanup agreement with us so that we will have the authority to issue a no further action <br /> required letter. I want to make sure you are comfortable with this before I approve their <br /> proposal. Do you have any concerns? <br /> Margaret Lagorio, REHS <br /> Program Coordinator Unit IV <br /> 600 E. Main Street <br /> Stockton, CA 95202 <br /> (209) 468-3449 <br /> t <br /> E L` <br /> I <br /> A <br /> 1 <br />