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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative <br /> of native soils beneath the tank's invert(tank's bottom)at a collection depth not to exceed 2-4 feet. If contamination is documented <br /> during closure,an Unauthorized Release Notification must be completed and submitted within five(5)working days pursuant to <br /> California Health&Safety Code,Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOILS S <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR PumpTank <br /> 1,000- 10,000 2 per Tank 1 at each E ank <br /> > 10,000 3 or More Ends dle OR generally <br /> per Tank spac g the length of the Tank <br /> PIPING AND STOCKPIL <br /> I AIM <br /> PIPING SO AMP le eve 20 lineal <br /> TANK&Pt STOCKPILE SAMPLES Samples every 50 cubi rd <br /> WATER IS P IN TANK PIT <br /> TANK TANK SIZE MINIMUM R LOCATION of SOIL MIN VIUM NUMBER <br /> # (Gallons) of SOIL S S SAMPLES of WATER SAMPLES <br /> < 10,000 2 from wall next to tank <br /> Single Tank ends at soil/groundwater 1 <br /> interface& I below tank <br /> 4 from wall next to tank <br /> > 10,000 OR ends at soil/groundwater <br /> Tank Cluster 5 or more interface& 1 below each 1 <br /> tank <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtai eath the slab within native soils. Penetration through the obstruction will be required in order to <br /> collect the samples. (Ph emoval of the obstruction will allow sampling according to the above conditions.) <br /> i <br /> TANK T SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # ons) 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 <br /> along the length of the Tank <br /> EH 23 046 (Revised 12/31/07) 7 <br />