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CASTLE ANALYTICAL LABORATORY 03/17/20 <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: 03/17/20 LICENSE CA ELAP 2480 <br /> LAB REPORT #:2003048 PROJECT/PO#: RIO BLANCO RD. & 8 MILE RD. <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) (ppm) <br /> 2003048-01 RIO BLANCO RD. 03/11/20 ND 1.0 OIL <br /> OIL FROM STEP DOWN 24 HR. <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 Quanitation Limit. <br /> ND = non-detect. <br /> APPROVED BY: <br /> --- TEST - - --- - <br /> EXTRACTION METHOD PQL UNITS-- ---TEST EQUIPMENT <br /> ------ ------------------ ------- ----- <br /> OIL 3580 1.0 mg/Kg (ppm) GC <br /> SOIL 3550 0.050 mg/Kg (ppm) SONICATOR/GC <br /> WIPE 3550 1.0 Pg/Area SONICATOR/GC <br /> WATER 608/3510 0.010/0.0010 mg/L (ppm) LLE/GC <br /> Page 1 <br />