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Pa-e 1 of 2 Mike Infurna [EH] From: Eytcheson, Brian K[Brian.K.Eytcheson@parsons.com] Sent: Friday,August 19, 2011 4:24 PM To: Mike Infurna [EH] Subject: RE: Well abandonment question, PG&E Tracy yard. Will do Mike. Thanks! Brian From: Mike Infurna [EH] [mailto:MInfurna@sjcehd.com] Sent: Friday, August 19, 20113:09 PM To: Eytcheson, Brian K Subject: RE: Well abandonment question, PG&E Tracy yard. Brian, good try, but no. the well must be properly destroyed BEFORE the excavation work under an EHD permit I can issue for you. Since the well/borehole will be partially excavated, the sealing material must be modified to allow for no fracturing of the material. I'm very busy now with two priorities that must go off today for Monday work. please call me at (209) 468-3454 Monday at 8am to discuss this. thanks mike From: Eytcheson, Brian K [mailto:Brian.K.Eytcheson@parsons.com] Sent: Friday, August 19, 20119:13 AM To: Mike Infurna [EH] Subject: Well abandonment question, PG&E Tracy yard. Hi Mike, I'm taking over from Kristin Guthrie as Parsons'field team lead at the former PG&E Tracy MGP site. As you probably know, we are planning remedial excavation at 6 areas of concern at the site. One of the groundwater monitoring wells (TW-5) is within one of the excavation areas. It is anticipated that the excavation in the area of well TW-5 will reach a depth of approximately 13 feet, which is a little more than half the total depth of the well (25 feet). We were wondering if we could abandon the well via excavation by shearing the casing and seal/sand pack materials off as we're digging,then pulling the remaining casing from the bottom of the excavation? Any remaining void space would be backfilled with clean imported fill as the excavation is backfilled and compacted. 8/22/2011