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The following table shows the methods and detection limits used, all tests use EPA <br />SW846 Method 8082; quantification 7.9.3, PQL = Practical Quanit <br />ND = non-detect. <br />APPROVED BY: <br />ion Limit, <br />TEST EXTRACTION METHOD PQL UNITS TEST EQUIPMENT EQUIPMENT <br />CASTLE ANALYTICAL LABORATORY 12/31/20 <br />PCB SUMMARY REPORT <br />PG&E - OAKDALE <br />811 W. J ST. <br />OAKDALE, CA 95361 <br />ATTN: CELIA BARAJAS / JEFF RHINEHART <br />DATE RCVD: 12/30/20 <br />CASTLE ANALYTICAL LABORATORY <br />2333 SHUTTLE DRIVE <br />ATWATER, CA 95301 <br />LAB DIRECTOR - CLARI J. CONE <br />LICENSE: CA ELAP 2480 <br />LAB REPORT 42012121 PROJECT/P0#: PM#35222217 <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 />(PPn) <br />2012121-01 17A051524+17A100399 12/29/20 ND 0.050 SOIL <br />21915 SEXTON RD., ESCALON 24 HR. <br />OIL <br />SOIL <br />WIPE <br />WATER <br />3580 1.0 mg/Kg (ppm) GC <br />3550 0.050 mg/Kg (ppm) SONICATOR/GC <br />3550 1.0 µg/Area SONICATOR/GC <br />608/3510 0.010/0.0010 mg/L (ppm) LLE/GC <br />Page 1