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INSTRUCTIONS <br /> TOTAL ALLOWABLE VARIATION/ALLOWABLE MEASUREMENT ERROR <br /> Total allowable variation for tanks with frequent input or withdrawals based <br /> on allowable measurement error plus 0.15 percent of throughput. <br /> Allowable measurement error for tanks with frequent input or withdrawals <br /> based on tank sizes as follows: <br /> ALLOWABLE <br /> TANK SIZE MpLUS REMENT <br /> (gallons) <br /> ERROR <br /> (gallons) <br /> _ 4000 25 <br /> 4000 to — 8000 50 <br /> 8000 to — 12000 75 <br /> — 12000 100 <br /> Total allowable variation for tanks which do not have frequent inputs or with- <br /> drawals (e.g. standby tanks) may not exceed 1 percent of the tank volume or 5 <br /> gallons, whichever is less, between measurements. <br />