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Angelica Sandoval Marin [EH] <br /> From: Angelica Sandoval Marin [EH] <br /> Sent: Friday, December 19, 2014 3:50 PM <br /> To: 'Lang, Sherrie' <br /> Subject: RE: CA-00595 (6100 N Hwy 99, Stockton) - Soil Vapor Sampling Schedule/ Material & <br /> Blank Samples <br /> Sherrie, <br /> I am unable to completely review the data that you submitted before the sampling event that is scheduled for Monday, <br /> December 22, 2014. The sampling event will need to be postpone until I have reviewed the data and weather <br /> permitting. <br /> Thanks <br /> Angelica <br /> Have a nice weekend O <br /> Angelica Sandoval Marin, Senior REHS <br /> San Joaquin County, Environmental Health Department <br /> 1868 E. Hazelton, CA 95205 <br /> (209)468-2807 desk <br /> (209)468-0341 fax <br /> Email: amarin@sicehd.com <br /> From: Lang, Sherrie [mailto:Sherrie.Lang arcadis-us com] <br /> Sent: Friday, December 19, 2014 12:16 PM <br /> To: Angelica Sandoval Marin [EH] <br /> Subject: CA-00595 (6100 N Hwy 99, Stockton) - Soil Vapor Sampling Schedule/ Material & Blank Samples <br /> Hi Angelica, <br /> The material and blank sampling results for the soil vapor points installed at this site on December 5`h are attached for <br /> your review. <br /> The material sample results show a small TBA detection (11 µg/L [just above the reporting limit of 10µg/L]) . The <br /> equipment blank sample came back clean with no detections above the laboratory reporting limits.This represents the <br /> cleanliness of the tubing,fittings, and canisters from the laboratory.The risk driver compounds for the site (BTEX)were <br /> not detected in either the equipment blank or material blank.The material blank was collected to determine the <br /> cleanliness of the sample point and screen after decontamination via qualitative comparison.The method blank sample <br /> had a detection of TBA above the laboratory reporting limit.Since TBA is not a risk driver for the site and the equipment <br /> blank results did not contain any concentrations, this should not affect the results of the soil vapor samples to be <br /> collected using the same equipment. <br /> Please let me know if you have any questions. Also,the soil vapor sampling,tentatively scheduled for Monday <br /> December 22ntl, may be postponed due to the rain. <br /> Thank you, <br /> Sherrie <br /> 1 <br />