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SAN FRANCISCO FRENCH BREAD, STOCKTON, CA SECOR Project No. 50090-011-01 <br /> (ATTACHMENT 5) <br /> SECOR <br /> AIR MONITORING EQUIPMENT CALIBRATION/CHECK LOG <br /> BATTERY ZERO LEAK CHECK <br /> INSTRUMENT/ SERIAL CHECK ADJUST CALIBRATION READING (Colorimetric PERFORMED <br /> DATE MODEL NO. NO. OK? OK? GAS(PPM) (PPM) Tube Pum ) BY COMMENTS <br /> 11:\SHMSTOCKTON\LINCOLN2.1 IS <br />