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SAMI._..4G PROTOCOL FOR ROUTINE TANK RL, wVALS <br /> The following represents minimum sampling criterion required for closure compliance. Sots samples collected shall be <br /> representative of native sobs beneath the tank's invert(tank's bottom) at a collection depth not to exceed 2 -4 feet. If <br /> conraminar;pn is documented during closure, an Unauthorized Release Notification must be completed and submitted within five (5) <br /> working days put==to California Health & Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK I TANK SIZE I MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> X < 1.000 1 per Tank Fill OR Pumn End of Tank <br /> 1,000- 10,000 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 /> PIPING A,\'D STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> X TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MLNIMUM NUMBERLOCATION of SOIL MINIMUM NUMBER of <br /> x (Gallons) of SOIL SAMPLES T SAMPLES WATER SAMPLES <br /> < 10,000 I 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/ 1 <br /> groundwater interface <br /> SLAB PRESENT IN THE TA.ry-K 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. (Pbysical 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 I Ends and Middle and generally spaced along <br /> the length of the Tank <br /> EH 23 046 (Revised 10/19/98) Page 7 <br />