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Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> ( P.O. BOX 937 <br /> C 0 R P 0 R A r 1 0 N HILMAR CALIFORNIA 95324 <br /> 04/09/99 DHS Certification # : 1400 <br /> QUALITY CONTROL REPORT: PCBs/EPA 600/4-81-045 & 8081 <br /> CLIENT: GEOLOGICAL TECHNICS <br /> 2741 RIVER ROAD <br /> HODESTO, CA 95351 <br /> ATTN: RAY KABLANOW <br /> Date Received: 01/22/99 <br /> Date Extracted: 01/25/99 <br /> Project Name: SHAWVER TRUCKING Date Completed: 01/28/99 <br /> Samples: PH9011357-PH9011359 <br /> Lab Report #: H9012218 <br /> METHOD: EPA 8082 <br /> Laboratory QC Summary: <br /> Calibration Verification: <br /> Init. Calib. Init. Calib. %RSD Verification %Difference : <br /> 1242 R- . 9986 1242 : 5 . 5 1242 : 9 . 0 <br /> 1254 R= . 9976 12541 6 . 2 1254: 2 .0 <br /> 1260 R- . 9987 1260: 12 . 3 1260: 6 .0 <br /> Hatrix Spike Recoveries ( 10.0 mg/Kg AROCLOR 1260 Spike Conc . ) : <br /> HIS % Recov. : 57 <br /> MSD % Recov. : 55 <br /> RPD 4 <br /> Laboratory Control Sample Recovery (9. 4 mg/Kg AROCLOR 1260) <br /> % Recov: 90 <br /> Hethod Blank <br /> AROCLOR 1242: ND<l mg/Kg <br /> AROCLOR 1254: ND<1 mg/Kg <br /> AROCLOR 1260: ND<l mg/Kg <br /> ncy �Biedenweg <br /> Laboratory Director <br /> OFFICE: (209)667-5258 FAX: (209) 667-2581 <br />