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25 <br /> T E C H N I C © N YEARS STRONG <br /> ENGINEERING SERVICES, INC. <br /> GEOTECHNICAL & ENVIRONMENTAL ENGINEERING - CONSTRUCTION TESTING & INSPECTION <br /> May 16, 2018 TES Project No. 180321 .001 <br /> Mr, Dustin Drake <br /> CV RECEIVED <br /> CVE Demolition <br /> 35500 South Welty Road <br /> Vernalis , California 95385 MAY 2 3 2018 <br /> RE: UST Removal Soil Sampling <br /> 729 North Central Avenue ENVIRONMENTAL <br /> Tracy, California HEALTH DEPARTMENT <br /> Mr. Drake: <br /> In accordance with your request and authorization , Technicon Engineering Services, Inc. <br /> (Technicon) has conducted Underground Storage Tank Removal Soil Sampling at the above- <br /> referenced site. The following sections present a brief description of the site and project, our scope <br /> of services, and the findings of our investigation . <br /> On May 4, 2018, Technicon was present, along with a San Joaquin County Environmental Health <br /> Department (EHD) staff, following the removal of a 100-gallon kerosene underground storage tank <br /> (UST) . The UST had been removed prior to Technicon's arrival on site. One soil sample was <br /> collected two feet beneath the UST location at six feet below ground surface. The soil sample <br /> collected during this investigation was collected by use of a slide hammer into a clean stainless- <br /> ,'�steel tube. After sampling , the ends of the sample tube were covered with Teflon® film, capped with <br /> plastic end caps, labeled , placed into a plastic bag and sealed . The sample was then placed in an <br /> ice chest cooled with synthetic ice for delivery to the analytical laboratory for chemical analysis. <br /> The soil samples were chemically analyzed for the presence and concentration of Benzene, <br /> Toluene, Ethylbenzene, and Total Xylenes (BTEX) , total petroleum hydrocarbons as gasoline (TPH- <br /> g), and total petroleum hydrocarbons as diesel (TPH-d) by EPA method 8015, PCBs by EPA <br /> method 8082, Oil and Grease by EPA method 1664A, SVOCs by EPA method 8270C, VOCs by <br /> EPA method 8260B, and CAM 17 Metals by EPA method 6020. Castle Analytical Laboratory in <br /> Atwater, California and McCampbell Analytical Laboratory in Pittsburg , California are state-certified <br /> laboratories and conducted the soil analyses. <br /> CORPORATE OFFICE — 4539 N. Brawley Avenue #108, Fresno, CA 93722 — P 559.276.9311 — F 559.276.9344 <br /> VISALIA OFFICE — 151 S. Dunworth Avenue, Visalia, CA 93292 — P 559.732.0200 — F 559.732.0830 <br /> MERCED OFFICE — 2345 Jetway Drive, Atwater, CA 95301 _ P 209.384.9300 — F 209.384.0891 <br /> www.technicon.net <br />