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Pagel of 2 <br /> N Frank Girardi [EH] <br /> From : Nuel Henderson [EH] <br /> Sent: Monday, November 09, 2009 11 :23 AM <br /> To: 'Tim Cuellar' <br /> Cc: Margaret Lagorio [EH] ; Frank Girardi [EH] <br /> Subject: RE: RMB Garage - 715 N . Hunter St. , Stockton CA <br /> Tim, <br /> Glad to see the project moving forward . The detection limit for TPHmo is quite high, so it cannot be totally <br /> discounted as a concern, however the lack of detectable concentrations for such a long period of time indicates <br /> that further analysis for the substance is not likely to provide definitive information, so for now you may dispense <br /> with the routine analysis for TPHmo. I suspect that the high TPHg concentrations are causing the high TPHmo <br /> detection limits. In the future, when the TPHg concentrations have declined significantly, the TPHmo analysis <br /> should be reinstated to see if it can be eliminated as a concern . Frank can send you a formal letter giving this <br /> conditional concurrence with your request when he returns to the office. <br /> Nuel <br /> I <br /> From : Tim Cuellar [mailto:tcuellar@advgeoenv.com] <br /> Sent: Monday, November 09, 2009 10 :04 AM <br /> To: Nuel Henderson [EH] <br /> Subject: RMB Garage - 715 N . Hunter St., Stockton CA <br /> Nuel, <br /> Last week I sent the city of Stockton a letter (see attached) requesting the restart of remediation <br /> equipment at RMB Garage. I requested a startup date of 12/0 1 so that the city accounting department can <br /> start a clean billing cycle on the first day of the month, and so that I have time to evaluate if repairs are <br /> needed to the equipment. <br /> i <br /> Also, I have tentatively scheduled a ground water monitoring event at the site for 11 /24,109. In accordance <br /> with your last letter dated 24 July 2009, we will analyze for PCE/TCE at wells MW-7 and MW- 12. <br /> In the 4th quarter 2008 rpt, AGE recommended that TPH-mo be removed from the ground water <br /> monitoring program since TPH-mo has not been detected in ground water samples. Would it be all right <br /> to eliminate TPH-mo from future ground water monitoring? <br /> Thanks - tim <br /> Timothy J. Cuellar <br /> Advanced GeoEnvironmental, Inc. <br /> Stockton • Santa Rosa • Monterev • Brea <br /> 12/14/2009 <br />