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Stockton Propeller, Inc., OCI Case #15242 <br /> Date Samples Collected: June 3, 2021 <br /> Sample SP-02: <br /> The sample was collected in the "Etching Room" from the unlabeled <br /> container of"DeSmut NS3" solution (Attachment 1: Site and Sample <br /> Maps). M. Belmont and Stockton Propeller, Inc. staff confirmed that <br /> the unlabeled container (Photo IMG_4368) was their"DeSmut NS3" <br /> solution. Staff from Stockton Propeller, Inc. dips their metal plane + . <br /> parts in the "DeSmut NS3" solution for etching as the third step of their <br /> process. <br /> Lew collected the sample from the "DeSmut NS3" solution using a <br /> new, clean, Coliwasa tube and transferred the sample into a new, <br /> clean, clear 32-ounce glass jar and closed the lid. The sample <br /> collected was a milky white liquid. Friend then placed a label on the jar = <br /> along with evidence tape on the lid. The sample was tested with pH <br /> paper (pH 0.0) during the sampling process. Salas photographed the <br /> sample near where it was collected (Attachment 2: Photographic Log, <br /> Photos IMG_43 76 to 4381). <br /> Photo: IMG 4368 <br /> Sample SP-03: F <br /> The sample was collected in the "Etching Room" from the blue barrel labeled "Non-Hazardous <br /> Industrial Waste, Rinse Water (NuEtch E3. DeSmut NS3 & Water)" (Attachment 1: Site and <br /> Sample Maps). M. Belmont and Stockton Propeller, Inc. staff confirmed that the blue barrel was <br /> the rinse water they used after dipping the metal plane parts in either the "NuEtch E3" solution or <br /> the "DeSmut NS3" solution. <br /> Lew collected the sample from the rinse water using a new, clean, Coliwasa tube and transferred <br /> the sample into a new, clean, clear 32-ounce glass jar and closed the lid. —he sample collected <br /> was a cloudy clear liquid. Friend then placed a label on the jar along with evidence tape on the <br /> lid. The sample was tested with pH paper (pH 2.0) during the sampling process. Salas <br /> photographed the sample near where it was collected (Attachment 2: Photographic Log, Photos <br /> IMG_4382 to 4385). <br /> Sample SP-04A1B: <br /> The samples were collected in the warehouse from an unlabeled, one third full, silverish 55- <br /> gailon container with a metal black top of 'Alodine" rinse solution (Attachment 1; Site and Sample <br /> Maps). M. Belmont and Stockton Propeller, Inc. staff confirmed that the unlabeled container was <br /> "Alodine" rinse solution. Staff from Stockton Propeller, Inc, dips their meta( plane parts in the <br /> "Alodine" solution and then into the "Alodine" rinse solution to complete the process. Myers noted <br /> the MuitiRAE (a portable multi gas detector) which measures the concentration of Volatile <br /> Organic Compounds (VOCs) in the air, detected 7ppb of cyanide gas during monitoring of the <br /> "Alodine" rinse solution. <br /> Lew collected the samples from the '`Alodine" rinse solution using a new, clean. Coliwasa tube, <br /> through the bung hole, and transferred the sample into a new, clean, clear 32-ounce glass jar_ <br /> Myers, using a new 50ml bellows sample bulb, transferred part of the samole from the 32-ounce <br /> glass jar into an amber 16-ounce jar. Once the amber 16-ounce jar was filled the lid was secured. <br /> Lew continued to fill the 32-ounce jar and secured the lid once completed. Two jars, a 16-ounce <br /> glass amber jar and a 32-ounce clear glass jar were filled with the sample, a dark brown liquid. <br /> Friend placed labels on each jar along with evidence tape on the individual lids. The samples <br /> were tested with pH paper (pH 2.0) during the sampling process. Salas photographed the <br /> Page: 5 <br />