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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The, following represents minimum Sampling criterion required for closure compliance. Soil sample.a collected shall be <br /> representative of native soils beneath the tank's Invert(tank's bottom) at a collection depth not to exceed 2 -4 feet. If <br /> cnnlxmhtxlinn Is documented during closure, an Ilnauthorized Release Notification must be completed rind submitted within five <br /> (S) working days pursuant to California Health & Safety Code, Section 23293, <br /> WATER NOT PRESENT IN TIIE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> N (Oallnns) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR Pump End of Tank <br /> X [.000 - 10.000 2 per Tank 1 at each End of Tank <br /> > 10,000 3 or More Enda and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> X PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic ysrds <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> N (Oallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall next to tank <br /> Single Tank 2 ends at soil/groundwater I <br /> Interface <br /> > 10,000 OR From wall next to tank <br /> Tank Cluster 4 ends at soil/ ) <br /> groundwater 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 order <br /> to collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br /> TANK TANK SIZE <br /> MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> N (Gallons) of SOIL SAMPLES <br /> i <br /> < 1,000 3 per Tank Center and Ends OR Sides of Tank <br /> i <br /> 1,000 - 10.000 S per Tank Center and Ends OR Sides of Tank <br /> > 10,000 3 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> Ell 23 046 (Revised 9/11/96) Page 2 <br />