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Page 2 of 4 <br /> traditional EPA Method 8260 using liquid-based standards. <br /> Regards, <br /> Dinesh Rao <br /> Senior Project Manager <br /> Ami Adini &Associates, Inc. <br /> 4130 Cahuenga Blvd, Suite 113 <br /> Los Angeles, California 91602 <br /> Tel (714) 538 0226 <br /> Fax (818)824-8112 <br /> dinesh(a)amiadini.com <br /> From: Vicki McCartney [EH] [mailto:vmccartney@sjcehd.com] <br /> Sent: Friday, January 28, 20113:18 PM <br /> To: Larry <br /> Cc: Dinesh Rao; Yarone (Ron) Madnick <br /> Subject: RE: Work Plan for Soil Gas Collection <br /> Larry, Dinesh, and Yarone: <br /> I nave read the draft Advisory-Active Soil Gas Investigation, and agree to AA&A's amended work plan that <br /> includes the collection of one duplicate soil gas sample in a 250 milliliter Summa canister and the analysis of the <br /> soil gas sample by EPA Method 8260 in an off-site State-certified Environmental laboratory. <br /> If the laboratory is using water-phase standards instead of gas-phase standards for the calibration curve, please <br /> confirm that the laboratory has analyzed a mid-level NIST gas-phase standard (vapor-phase validation check <br /> standard)that includes all of the target analytes and that the percent difference is twenty percent or less, <br /> especially for MTBE. The reporting limits should be less than or equal to the ESLs or CHHSLs for residential land <br /> use. <br /> I hope to issue the permit today for the three soil gas probes. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton,California 95202 <br /> Phone: (209)468-9852 <br /> Fax: (209)468-3433 <br /> Email: vmccartneas'c� ehd.com <br /> From: Larry [mailto:larryw@amiadini.com] <br /> Sent: Friday, January 21, 20112:15 PM <br /> To: Vicki McCartney [EH] <br /> Cc: 'Dinesh Rao'; 'Yarone (Ron) Madnick' <br /> Subject: RE: Work Plan for Soil Gas Collection <br /> Vicki, <br /> We would agree to add the following to the Description of the Work in the letter that was provided with the <br /> boring permit application: <br /> Duplicate Samb1mg <br /> The results of the field work utilizing a mobile laboratory will be independently confirmed through the <br /> 2/3/2011 <br />