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SAMPL1.d PROTOCOL FOR ROUTINE TANK REM./ALS <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples 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 /> contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted within five (5) <br /> working days pursuant to California Health& Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE I MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 I 1 per Tank Fill OR Punto End of Tank <br /> 1,000 - 10.000 I 2 per Tank I 1 at each End of Tank <br /> > 10,000 I 3 or More Ends and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> PIPLNG A.N-D STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples evert 50 cubic yards <br /> WATER IS PRESENT IN TANK PTT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) 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 I 4 ends at soil/ I <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 to <br /> collect the samples. (Pbvsical removal of the obstruction will allow sampline according to the above conditions.) <br /> TANK TANK SIZE MINLMUNI NUMBERI LOCATION of SOIL SAMPLES <br /> M <br /> 4 (Gallons) of SOIL SAPLES <br /> < 1,000 ( 3 per Tank I Center and Ends OR Sides of Tank <br /> 1,000 - 10,000 5 per Tank Center and Ends OR Sides of Tank <br /> > 10.00o 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> EH 23 046 (Revised 10/19/98) Page 7 <br />