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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS i <br /> r <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> representative of native soils 'beneath the tune's invert (tank's bottom) at a coilection depth not to exceed 2 - 4 felt. if <br /> contamination is documented during closure, an Unauthorized Release Notification must be completed and submiited withif n five <br /> (5) working clays pursuant to California Health & Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE 'WANK PIT � <br /> I <br /> TANK TANK SIZFr <br /> MINIMUM NUMBER LOCATION OF SOIL SAMPLES � <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR Pump End of Tante <br /> 1,000 - 10,000 2 per Tank 1 at each, Enol of Tank I <br /> > 10,000 3 or More Ends and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER f <br /> # (Gallons) of SOIL SAMPLES SAMPLP-S WATER SAMKF-S <br /> < 10.000 From wall next to tank ! <br /> Single Tank 2 ends at soil/groundwater l� <br /> interface <br /> > 10,0W OR From wall next to tank <br /> Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> I <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtained beneath the slab within dative sails- Penetration through the obstruction will be required in rder <br /> to collect the samples. (Physical removal of the obstruction will allow sampling according to the above eonditioat.) <br /> I <br /> TANK TANK SIZE a�t <br /> INIMUM NUMBED LOCATION of SOIL SAMPLES <br /> # (Gallons) SOIL SAMPLES <br /> I <br /> < l,000 3 per Tank Center and Ends OR Sides of'lank <br /> 1,000 - l0 Opo 5 per Tame Center and Ends OR Sides of Tank <br /> > 10,000 S OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> k <br /> EH 23 046 (Revised 9/11196) page 7 E <br /> ILt_1'd t°t-, T S9860G T <br />