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SAMPLING FOR ROUTINE TANK REOs1ALS <br /> tank's bottom) at a collection depth not to exceed 2 - 4 feet. If <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall e <br /> representative of native sails beneath the tank's invert <br /> contamination s dloo�nmdaY during closure, <br /> tosCaliforma Healtathoh& Safety Code,Section 25295.t be completed and submitted <br /> within five (5) working <br /> WATER NOT PRESENT IN THE TANK PTT <br /> MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> TANK TANK SIZE of SOIL SAMPLES <br /> # (Gallons) <br /> 1 per Tank Fill OR Pump End of Tank <br /> < 1.000 I at each End of Tank <br /> 1,000 - 10,000 2 per Tank generally <br /> e Ends and Middle OR g Y <br /> 3 or Mor <br /> spaced along the length of to Tank <br /> > 10,000 per Tank <br /> PIPING AND STOCKPILE <br /> 1 Sample every 20 lineal feet <br /> PIPING SOIL SAMPLES <br /> TANK & PIPING STOCKPILE SAMPLES <br /> 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT ER of <br /> LOCATION of SOIL MINIMUM NUMB <br /> MINIMUM NUMBER LES WATER SAMPLES <br /> TANK TANK SIZE of SOIL SAMPLES SAMP <br /> # (Gallons) <br /> From wall next to tank 1 <br /> < 10,000 2 ends at soil/ groundwater <br /> Single Tank interface <br /> From wall next to tank 1 <br /> > 10,000 OR 4 ends at soil/ <br /> Tank Cluster groundwater interface <br /> SLAB PRESENT IN THE TANK PTT <br /> Premoval of to obstruction will allow sampling according to the above conditions.) <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required m <br /> order to collect the samples. (Physical <br /> MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> TANK TANK SIZE of SOIL SAMPLES <br /> # (Gallons) <br /> 3 per Tank Center and Ends OR Sides of Tan <br /> < 1,000 Center and Ends OR Sides of Tank <br /> 10,000 5 per Tank <br /> 1,000 - Ends and Middle and generally spaced along <br /> > 10,000 5 OR More per Tank the length of the Tank <br /> Page 7 <br /> EH 23 047 (Revised 7/10/92) <br />