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Environmental Chemistry Laboratory <br />Customer Technical Assistance (CTA) Form <br />General Information Lab Notebook No.: NA <br />Customer Name: Trevor Anderson Date/Time of Contact: 6/152021 @ 1126 <br />Communication Method: ❑ Telephone E Email ❑ In -Person <br />Reason/Purpose for Contact: Confirming that is ok to use the pH solids methods on 3 samples. <br />Additional Information <br />Authorization No.: 20ECO105 <br />Other Information: NA <br />Summary of Discussion & Resolutiou (Provide as much detail as possible): <br />- The original SAR requested that all samples be analyzed using method 9040 (which is a method <br />for liquids only). 1 reached out to the requestor and he stated that he would like the following samples to <br />be tested as a solid. <br />Collectors ID <br />ECL Number <br />SP -07 <br />BE02074 <br />SP -08 <br />BE02075 <br />SP -09 <br />BE02076 <br />Recorded by: <br />Karlaina Gipson 6/15/2021 <br />Name Signature/Date <br />DCN: 07.0149.00 rev 209/17/2020 Approved by Quality Management Officer Page NA of 50 <br />Page 1 <br />Page 17 of 20 <br />