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• • Page 2 of 3 <br /> f <br /> Stockton, California 95205 <br /> Phone: (209)468-9852 <br /> Email: vmccartnev(d)sicehd.com <br /> h} <br /> From: Brian Millman rmailto•bmillman@advoeoenv.com] <br /> Sent: Wednesday, May 07, 2014 8:32 AM <br /> To: Vicki McCartney [EH] <br /> Subject: RE: Main Street Investments -601 Main Street, Stockton, CA - Approval letter dated 3-11- <br /> 14 <br /> Hi Vicki, thank you for the below response, sorry for the long delay between responding I <br /> have been out for a bit and then in the field a lot. I was hoping to contact you by phone and <br /> discuss the items below a little bit more. Will you be available in the afternoon today for a <br /> quick phone call? <br /> Thanks, <br /> ---------..--- -------------__...------ <br /> From: Vicki McCartney [EH] rmailto•vmccartnev(asicehd.com] <br /> Sent:Thursday, April 10, 2014 1:37 PM <br /> To: bmillmanCa)advoeoenv.com <br /> Subject: RE: Main Street Investments - 601 Main Street, Stockton, CA - Approval letter dated 3-11- <br /> 14 <br /> Hi Brian, <br /> In response to question Number 1 below, the answer is"yes". <br /> I have appended two pages from Advisory-Active Soil Gas Investigation, dated April <br /> 2012, published by California EPA DTSC, LA Regional Water Quality Control Board and SF <br /> Regional Water Quality Control Board. Section 6.3.2 of the appended information explains the <br /> differences between collecting a duplicate sample verses collecting a replicate sample. Please <br /> collect a duplicate sample in a Summa canister and analyze the sample for TPH-g, BTEX, MTBE, <br /> ETBE, TAME, DIPE, TBA, EDB, !-2-DCA and IPA. Please collect a replicate sample when <br /> collecting the TO-17 sample and analyze the sample for naphthalene, TPH-d and TPH-mo. <br /> In response to question Number 2 below, the answer is"yes". Analyze the trip blank for <br /> naphthalene, TPH-d and TPH-mo. Please refer to Section 6.3.1. of Advisory-Active Soil Gas <br /> Investigation concerning trip blanks. <br /> In response to question Number 3 below, a material blank tests the soil gas probe, tip and tubing <br /> assembly to determine if materials used for soil gas sampling contain any of the contaminants of <br /> concern. For this reason, the material blank should be analyzed prior to soil gas sampling. Please <br /> refer to Section 6.3.1. of Advisory-Active Soil Gas Investigation concerning material blanks. <br /> Please do not hesitate to contact me if you are still unclear about the conditions listed in the EHD <br /> letter dated 11 March 2014. <br /> Thanks, Brian, for asking. <br /> Vicki McCartney, Senior REHS <br /> 5/7/2014 <br />