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Stockton Propeller Sampling and Analysis Plan <br /> markers.The pipe was then used similar to a coliwasa sampler tube to collect two samples at <br /> approximately 1.5 ft and 3 ft below the waste surface respectively, and the samples at each depth were <br /> combined in a clean bucket.The composite sample was then poured into lab provided containers.This <br /> was done for both compartments for a total of two (2) composite samples—one (1) per compartment. <br /> Once collected, samples were refrigerated overnight.The next day, samples were transported under <br /> chain of custody procedures in an ice chest to California Laboratory Services (CLS), an Environmental <br /> Laboratory Accreditation Program (ELAP) laboratory (#1233) in Rancho Cordova, CA. CLS then analyzed <br /> the samples for pH, CAM 17 Metals, Cyanide, and aquatic toxicity using an aquatic 96-hr LCso test.The <br /> aquatic 96-hr LCso test was contracted out to 49er Water (ELAP Certification#3036) in Jackson, CA.The <br /> samples collected and analyzed did not exceed the Soluble Threshold Limit Concentration (STLC)for the <br /> CAM 17 metals or California Code of Regulations,title 22, section 66261.22 pH limits, was non-detect for <br /> cyanide, and determined to be non-hazardous per the requirements in CCR,Title 22, Section <br /> 66261.24a.2B.6. Refer to Attachment 2. <br /> Blankinship&Associates, Inc. Page 6 of 20 September 23, 2022 <br /> NES, Inc. <br />