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Advanced Metal Plating <br /> Sampling Report <br /> Page 2 <br /> III. BACKGROUND <br /> Mr. Doug Wilson from the San Joaquin County Environmental <br /> Health Department requested DTSC to analyze samples that his <br /> staff collected on November 26, 1996. The analytical results <br /> are included in Attachment A. <br /> Mr. Wilson later requested that DTSC collect samples and <br /> analyze them in support of a search warrant that would be <br /> served on January 24, 1997 at Advanced Metal Plating in <br /> Stockton California. A map which shows the location of this <br /> company is included in Attachment B. <br /> IV. PRE-SAMPLING ACTIVITIES <br /> An Authorization Request Form (ARF) was completed and <br /> telefaxed to the Hazardous Materials Laboratory (HML) which <br /> estimated the number of samples that would be collected, <br /> (Attachment C) . The laboratory authorized the analyses and <br /> assigned the authorization number, HMM3119 . This number <br /> appears on the ARF, and Hazardous Materials Sample Analysis <br /> Request (SAR) , (Attachment D) , and on the analytical reports <br /> (Attachment F) . <br /> V. SAMPLING ACTIVITIES <br /> Sampling activities began at 10: 00 a.m. Twenty five samples <br /> were collected. Two of these samples were given to SJCEHD <br /> for analysis- at a different laboratory. The analytical <br /> results from the two samples given to SJCEHD are not <br /> included in this report. They were numbered AMP-24-1 and <br /> AMP-24-2 . The samples retained by DTSC were numbered NKL001 <br /> through NKL023 (See Photographs in Attachment G) . <br /> The table in Attachment E indicates the sample numbers, <br /> sample location, photograph number, analytical results, <br /> regulatory levels and regulatory citations for samples <br /> NKL001 through NKL023 . A diagram which indicates the <br /> location where each sample was collected is included in <br /> Attachment H. <br /> Each liquid sample was collected with a disposable device <br /> known as a Coliwasa that was new and had never been used <br /> before. The Coliwasa is composed of two glass parts. The <br /> inner glass rod was placed inside the outer glass tube. The <br /> inner glass rod was then pulled up and the Coliwasa was <br /> placed to the bottom of the tank or container to be sampled. <br /> The glass inner rod was then pushed to the bottom of the <br />