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The following represents minimuftmpling criterion required for closure 1pllance. Soil samples collected shall <br />representative of native lolls beneath the tank's Invert (tank's bottom) at a collection depth not to exceed 2 - 4 feet. <br />contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted Wtu <br />five (5) working days, Callfornla Health a Safety Code, Section 25295, <br />WATER NOT PRESENT IN THE TANK PIT <br />TANK <br /># <br />TANK SIZE <br />(Gallons) <br />MINIMUM NUMBER <br />of SOIL SAMPLES <br />LOCATION OF SOIL SAMPLES <br />MINIMUM NUMBER of <br />WATER SAMPLES <br />< 1,000 <br />1 per Tank <br />FW OR Pump End of Tank <br />From wall nextito tank <br />1,000 - 10,000 <br />2 per Tank <br />1 at each End of Tank <br />2 <br />> 10,000 <br />3 or More <br />per Tank <br />Ends and Middle OR generally <br />spaced along the length of the Tank <br />WATER IS PRESENT IN TANK PIT <br />TANK <br /># <br />TANK SIZE <br />(Gallons) <br />MINIMUM NUMBER <br />of SOIL SAMPLES <br />LOCATION of SOIL <br />SAMPLES <br />MINIMUM NUMBER of <br />WATER SAMPLES <br />TKTAZE <br />< 10,000 <br />Center and Ends OR Sides of Tank <br />From wall nextito tank <br />10,000 <br />5 per Tank <br />Single Taak <br />2 <br />ends at soil! groundwater <br />1 <br />Enda and Middle and generally spaced along <br />the length of the Tank <br />Interface <br />> 10,000 OR <br />From wall neat to tank <br />Tank Cluster <br />4 <br />ends at soW <br />I <br />groundwater Interface <br />SLAB PRESENT IN THE TANK PIT <br />Soil samples shall be obtained beneath the stab within native sods. Penetration through the obstruction will be required <br />order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br />PIPING AND STOCKPILE <br />EH 23 047 (REV 4/23/91) <br />Page 7 <br />MINIMUM kUMBER <br />of SOIL SAMPLES <br />LOCATION of SOIL SAMPLES <br />TKTAZE <br />3 per Tank <br />Center and Ends OR Sides of Tank <br />10,000 <br />5 per Tank <br />Center and Ends OR Sides of Tank <br />0 <br />5 OR More per Tank <br />Enda and Middle and generally spaced along <br />the length of the Tank <br />PIPING AND STOCKPILE <br />EH 23 047 (REV 4/23/91) <br />Page 7 <br />