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• <br /> SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS 00028O <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> rqxe <br /> sentative of native soils beneath the tank's invert(tank's bottom)at a collection depth not to exceed 2-4 feet. If <br /> - contamination is documented during closure,an Unauthorized Release Notification must be completed and submitted within five <br /> (5)working days pursuant to California Health&Safety Code,Section 25295. <br /> WATER LM PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # Gallons of SOIL SAMPLES <br /> �J $27- < 1,000 1 per Tank Full OR Pump End of Tank <br /> r D2U1 <br /> I'm- 10.000 2 oerTank tteZda�'!ong <br /> acEnd of Tank <br /> > 10,000 3 or More per Tank Middle OR generally <br /> the leng1t of the Tank <br /> f PIPING AND STOCKPILE <br /> 1 H PIPING SOIL SAMPLES I 1 Sample every 20 lineal feet <br /> 1 TANK&PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK Si2E MINIMUM LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) NUMBER of SOIL SAMPLES WATER SAMPLES <br /> SAMPLES <br /> < 10.000 From wall next to tank <br /> Single Tank 2 ends at soil/groundwater 1 <br /> interface <br /> > 10,000 OR From wall next to tank <br /> Tank Cluster 4 ends at soil/groundwater 1 <br /> interface <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in <br /> order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # Gallons of SOIL SAMPLES <br /> < 1,000 3 per Tank Center and Ends OR Sides of Tank <br /> 1,000- 10 000 5 per Tank Center and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along due <br /> leng of the Tank <br /> EH 23 047(Rev 7/10/92) <br /> 7 <br />