SITE INFORMATION AND CORRESPONDENCE (2)

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Page 1 of 2 Mike Infurna [EH] From: Matt Hanko [hanko@geoconinc.com] Sent: Thursday, September 01, 2005 5:26 PM To: Mike Infurna [EH] Subject: Re: Ranch Market Mike: Thank you for the reply. I will send you a revised version of the Interim Alternative Remedial Action Plan that will change simply with a caveat inserted that says, "Geocon will evaluate the need for PermeOx injections after the DPE has been completed. If it is found necessary to follow through with PermeOx injections, Geocon will perform a Geochemical Evaluation to satisfy the requirements of the RWQCB for the WDR." The revision is as simple as that. I will have that revised version on your desk by September 8, 2005 ready for your review. Thank you, Matt Hanko -----Original Message----- From: Mike Infurna[EH] To: Matt Hanko Sent: Thursday, September 01, 2005 4:46 PM Subject: RE: Ranch Market You and James Barton are moving way faster than I am on this submittal. I haven't even read it yet... But if you and JLB have come up with a change already, put it in writting Matt. I WILL review and evaluate the proposal I'm sent. SOunds like I don't even need to review the Interim one??? Whatever you decide, let EHD know-as lead agency, it will be EHD's correspondence, WP approval letter that would provide the SWRCB-CUF with the requirements that would qualify your RP for reimbursement ....EHD will evaluate whatever you send in against"adequate and necessary" (H&S 25296.10(c)(3).. The CUF will evaluate it against"cost-effective" standards... Without injectables above'ambient'air standards, a WDR evaluation and CVRWQCB's imput is not required. I will out of the office til 9-6-05, and then very busy with field work. Let me know if you want me to comment on the Interim in writting as submitted or wait for a 'revision', or addendum...I won't tackle this site til about 9-8-05. -----Original Message----- From: Matt Hanko [mailto:hanko@geoconinc.com] Sent: Thursday, September 01, 2005 11:44 AM To: Mike Infurna [EH] Subject: Ranch Market Mike: I spoke with James Barton this morning regarding the injection of oxygen release compounds at the Ranch Market site. Jim reported that despite our previous history of ozone injections and six quarters of analytical data for metals in groundwater that we would still need to complete a Geochemical Evaluation or Bench Scale Study to demonstrate how the added oxygen is going to react with the groundwater chemistry. The cost is about$10,000. In the Geocon Interim Alternatives Remedial Action Plan the PermeOx (oxygen release agent)was 9/6/2005