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ENVIRONMENiAI <br />I(NEMIS <br />[ADORAJOIORY <br />Authorization No.. 20ECO105 <br />California Environmental Protection Agency <br />Department of Toxic Substances Control <br />Environmental Chemistry Laboratory <br />700 Heinz Avenue, Suite 100, Berkeley, CA 94710 <br />Telephone: (510) 540-2122 <br />ANALYTICAL LABORATORY REPORT - pH <br />L Sampling Location: Stockton Propeller. Inc. <br />Address: 2478 Wilcox Road <br />Sample Location: Stockton Propeller, Inc. <br />Sacramento, CA 95826 <br />3. Sample (s) History: <br />Stockton, CA 95215 <br />2. Requester' Name: <br />Trevor Anderson <br />Address: <br />8800 Cal Center Drive <br />Sacramento, CA 95826 <br />3. Sample (s) History: <br />6/21202/ <br />Date Collected: <br />6/32021 <br />Date Received: <br />6/3/2021 <br />Date Prepared: <br />6/21202/ <br />Prepared Method: <br />EPA 9040C <br />Date Analyzed: <br />6/212021,6/30/2021 <br />Analysis Method: <br />EPA 9040C, EPA 9045D <br />Date data package was completed: 7/22021 <br />Case narrative: <br />I. Initial calibration and continuing calibration criteria were met? YES <br />2. QC parameters were within control limits? YES <br />3. Sample holding time was met? YES <br />4. This method is ISO/IEC 17025 accredited for analysis of sediments, soils, wastes, and hazardous wastes only. <br />Comments: <br />AN 20EC0105, BK0672, p. 11-12 <br />samples were analyzed in two batches: <br />BE02068, BE02073-77 (pH screen 6.14) on 6212021 <br />BE069-72 (pH screen 0-3) on 6/302021 <br />J qualifier: pH value outside calibration range <br />Sample Prayare <br />d by: <br />y:ll� (J Date: <br />Juan Villaltomero <br />a.—mplQ prlptyzad by: <br />%r2(%o2 SV /•, <br />Date: <br />Juan VillaRomero <br />"7/ 2202/ <br />Page 2 of 20 <br />