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i� <br /> Page 1 of 2 <br /> I <br /> Lori Duncan [EH] <br /> From : Lori Duncan [EH] <br /> Sent: Tuesday, September 29, 2009 4: 19 PM <br /> To: 'Gavin Fisco' <br /> Subject: RE: 1817 South Fresno Ave. , Stockton - Sampling Confirmation <br /> Gavin , <br /> I 'm not sure what 'back and forth' you are referring to in regards to analysis for lead scavengers and fuel <br /> oxygenates. <br /> In correspondence dated December 23, 2008 the EHD directed all water samples to be analyzed for TPHg, <br /> benzene, toluene , ethylbenzene and xylenes; and that wells MW-5B and MW7 also be analyzed for fuel <br /> oxygenates and lead scavengers. (I think this was a typo actually) it should have been MW-8, not 7 ). <br /> In correspondence dated February 17, 2009, in response to Clearwaters recommendation to add the remediation <br /> wells to the sampling regimen , the EHD approved adding SVE-1 (now DPE-1 ) and AS-1 to the sampling <br /> regimen with the condition that they were analyzed for all plus fuel oxygenates and lead scavengers, until <br /> contaminant trends are established . <br /> The sampling frequency of the wells was later reduced , the listed analytes was not changed . <br /> However, looking at the sample results table from the most recent monitoring report, it appears only the lead <br /> scavenger analysis was dropped . <br /> The history on the lack of detection of fuel oxygenates and lead scavengers in the wells it was dropped from is <br /> strong . I don 't see any support for doing it again, but its up to you . <br /> Lori <br /> From : Gavin Fisco [mailto: GFisco@clearwatergroup.com] <br /> Sent: Tuesday, September 29, 2009 10 : 34 AM <br /> To: Lori Duncan [EH] <br /> Cc: Olivia Jacobs; Arron Wilder <br /> Subject: 1817 South Fresno Ave., Stockton - Sampling Confirmation <br /> Greetings Lori, <br /> I wanted to confirm that we will be sampling all of the monitoring wells on site as well as SVE- 1 , <br /> AS- 1 and IW-3 as part of the rebound sampling. I also wanted to confirm that we are going to be <br /> analyzing for all of the COCs in all wells since there has been some back and forth in regards to <br /> sampling for the lead scavengers and 5 fuel oxygenates. <br /> We are planning on sampling wells MW- 1 through MW-4, MW-5B through MW-8, SVE- 1 , AS. <br /> 1 , and IW-3 for TPH-g, BTEX, 5 fuel oxygenates, and the lead scavengers. <br /> Please confirm that this is correct. <br /> Thanks, <br /> Gavin P . Fisco <br /> 10/1 /2009 <br />