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$ E CEI V ED Sp _t 1 2001 <br /> CONTRACTORS LICENSE#764037 <br /> INSTRUMENTATION--CONTROLS—ELECTRICAL <br /> P O BOX 610,ACAMPO,CA 95220 <br /> 209-483-7846-FAXIMESSAGE (209)-339-4571—e coop@comcast net <br /> FIELD SERVICE REPORT <br /> Protect #1701 <br /> CUSTOMER ATC <br /> CONTACT. Mr Drew Van Alien <br /> TELEPHONE 579-2221 <br /> DATE. 08/21/2003 <br /> TECHNICIAN: Eric Cooper <br /> SERVICE PERFORMED: Certify Calibration LEL transmitter, 610 North Hunter Street, <br /> Stockton CA <br /> 08/21/2003 <br /> Certify calibration of MSA LEL gas detector at remediation facility,610 N Hunter Street, <br /> Stockton, CA Set fresh air zero, then apply 40% hexane gas to sensor and adjust span Verify <br /> system shutdown @10% Final discharge pump shuts down Q 10%which in tum shuts down <br /> system on high level Found Moisture in sample tubing which can cause sensor to drift, filters and <br /> air separators can be installed to prevent this or mounting the transducer directly it the top of the <br /> final discharge tank may prevent this <br /> Flat rate calibration - $250 <br /> Cal Gas- $40 <br /> THANK YOU FOR THE OPPORTUNITY TO PROVIDE YOU SERVICE111 <br /> L <br /> Enc Co er <br />