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. — Clayton <br /> ENVIRONMENTAL <br /> CONSULTANTS <br /> HOFMM EZ CHECK 1 <br /> CHECK LIST <br /> Tester: � �+-.z�; S�`v s Supervisor: �yti Date: t Eger. /5'j t <br /> l( Secure tank area. Have vehicles that are parked within 10 feet moved. If they are <br /> going to be moved during the test. Block access so that no travel within 10 feet of the <br /> tank is allowed (except for emergencies) (Sec. 8 page 1). <br /> Prepare tank for testing. Remove tank foot valve and insure tank is isolated from <br /> pumping system. Remove any drop tubes if used in tank (Sec. 8 page 1). <br /> G� Stick tank to determine tank bottom to grade, tank top to grade, length of fill pipe, and <br /> check for water in tank bottom. Tank should be filled to within 3" of top of fill pipe <br /> by client, determine when tank was filled to see if sufficient time has elapsed (min. 6 <br /> hours) for product stabilization. Fill out tank testing form using measurements <br /> observed. <br /> Gd Collect sample of product, measure sample specific gravity and temperatures, set aside <br /> 200 milliliters for calibration. <br /> Insert temperature probe to correct depth. <br /> Bring product to top of fill pipe using table in section 14 page 4 of the Homer <br /> instruction manual. Check for gross 1 (assumed if level win not stabilize after <br /> adding the amount of product listed in table (Sec. 14 page 4). <br /> LEf If there are no gross leaks, calculate proper product height (height to produce a <br /> minimum of 2.4 psi, maximum of 5 psi at tank bottom) and connect standpipe <br /> assembly to fill pipe. <br /> E2( Set up equipment. Estimate the amount of product required to reach test level and fill <br /> / upper reservoir on stand pipe again, check for gross leaks (Sec. 9 page 1). <br /> 2 If no gross leaks, maintain level in standpipe upper reservoir. <br /> Eli Bleed all vapor areas such as tank lines or manways, if they are present on the tank. <br /> When tank level is stable in the upper reservoir of the constant pressure stand pipe <br /> (CPS), lower pressure .4 PSI and maintain constant pressure on tank. Start 3 hour <br /> minimum stabilization time. <br /> C� Calculate exact total tank capacity through including product, return and vent lines <br /> (Sec. 4 page 3). Calculate coefficient of expansion (COE). <br /> S� Assemble and set up tank testing equipment. Connect temperature probe to digital <br /> indicator, assemble chart recorder and calibrate. Set up bubbler to correct chamber in <br /> the (CPS) (Sec. 9 page 1). <br /> IL-NW O t�englaa{velezcnt.G,n <br />