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Office of Criminal Investigations <br /> Photographic Log <br /> Thatcher Chemical of California, Stockton <br /> Photo#: 31 Photo#: 32 <br /> Photographer: Bonny Lew Date: 11/28/2018 Photographer: Bonny Lew Date: 11/28/2018 <br /> ■MEN <br /> —40 <br /> #1f x <br /> k r- <br /> DSCN 1918 DSCN 1919 <br /> Photo of pH strip used to measure the liquid in the buckets; the View from above of hydrotest wash water in buckets before <br /> result was approximately 2 pH units. Result of pH measurement collection. All four buckets seen here contained the same <br /> of the sample in the laboratory was 1.37 pH units. substance. The buckets ranged from half full to completely full. <br />