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Page 11 of 14 <br /> report). <br />' • Tank Excavators (possibly Valenzuela <br /> Engineering?)collected sidewall and bottom <br /> samples from the UST pit (see Section 4.7.3 of <br /> Delta's report). The samples were submitted to <br /> Sequoia Labs and analyzed for TPHd, TPHg, and <br /> BTEX; other than two TPHd detections of 1.9 <br /> mg/kg and 2.0 mg/kg, all samples were non-detect <br /> (see Section 4.7.4 of Delta's report)_ <br /> • The backhoe was digging around the ballasted <br /> tanks while installing shoring in preparation for <br /> removing the USTs (see Section 4.7 of Delta's <br /> report). <br /> •' Reviewing Delta's report, it appears the 1982 <br /> USTs were removed on October 24,while the UST <br /> pit was over-excavated on October 25, 1996 to <br /> accommodate the new, larger USTs. <br /> • I could not locate any hauling or disposal <br /> manifests associated with the USTs. <br /> Hope this helps, let me know if you have any questions. <br /> I <br /> Benjamin Chevlen, P.G. <br /> Senior Geologist <br /> Stantec <br /> Ph: (805) 230-1266 Ext. 293 <br /> - .Fx: (805)230-1277 " - - <br /> Cell: (916)425-4849 <br /> henjai-nin.chevlen@stantec.com <br /> stantec.com <br /> The content of this email is the confidential property of Stantec <br /> and should not be copied, modified, retransmitted,or used for any - <br /> purpose except with Stantec's written authorization. If you are not <br /> the intended recipient, please delete all copies and notify us <br /> immediately. <br /> i' Please consider the environment before printing this email. <br /> i <br /> From: Mike Infurna [EH] [mailto:MInfurna@sjcehd.com] <br /> Sent: Tuesday, January 04, 20112:39 PM <br /> To: Chevlen, Benjamin <br /> Subject: RE: 76 #5886 <br /> good answers...hopefully you can see why I was <br /> unable to answer them myself. <br /> i <br /> I'm NOT clear on the OS system...in your NFAR it <br /> said the GWE stopped in Jan 02 pending OS <br /> system startup..did it ever go ONLINE? dates of <br /> operation? <br /> and now the big confusion.. <br /> I <br /> the former USTs. I can account for July 1995 <br /> "PIPING" removal. some digging, sampling, soil <br /> trans offsite ALL w/o EHD approval, witness, <br /> 3/14/2011 <br />