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CASTLE ANALYTICAL LABORATORY 02/27/23 <br />PCB SUMMARY REPORT <br />PG&E - STOCKTON CASTLE ANALYTICAL LABORATORY <br />4040 WEST LANE 2333 SHUTTLE DRIVE <br />STOCKTON, CA 95204 ATWATER, CA 95301 <br />ATTN: ALEX STEELE / DAVE LARSEN LAB DIRECTOR - CLARI J. CONE <br />DATE RCVD: 02/27/23 LICENSE:CA ELAP 2480 <br />LAB REPORT #:2302101 PROJECT/P0#:WING LEVEE, WEST LN, LINDEN <br />Below is a listing of the samples received together with the laboratory results on <br />their respective PCB content. Please contact the lab at 209-384-2930 if you have <br />any questions regarding these sample results. <br />PCB <br />LAB I.D. SAMPLE I.D. DATE AROCLOR RESULT PQL MATRIX <br />(ppm) <br />(ppm) <br />2302101-01 WING LEVEE 02/25/23 ND 1.0 OIL <br />SAME DAY <br />2302101-02 WEST LN 02/22/23 ND 1.0 OIL <br />2302101-03 LINDEN 02/22/23 <br />ND 1.0 OIL <br />The following table shows the methods and detection limits used, all tests use EPA <br />SW846 Method 8082; quantification 7.9.3, PQL = Practical Qu nitatio Limit. <br />ND = non-detect. <br />APPROVED BY: <br />TEST EXTRACTION METHOD PQL UNITS TEST EQUIPMENT <br />OIL <br />SOIL <br />WIPE <br />WATER <br />3580 <br />3550 <br />3550 <br />608/3510 <br />1.0 <br />0.050 <br />1.0 <br />0.010/0.0010 <br />mg/Kg (ppm) <br />mg/Kg (ppm) <br />pg/Area <br />mg/L (ppm) <br />GC <br />SONICATOR/GC <br />SONICATOR/GC <br />LLE/GC <br />Page 1