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I <br /> SAMPLINtePROTOCOL FOR ROUTINE TANK REI�I!OVALS <br /> The following represents ndnimum sampling criterion required for closure compliance. Soil sampics collected shall be <br /> teptesentative of native soils beneath the tank's Invert(tank's bo(tom) 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 <br /> within five (5) working days pursuant to California Health & Safety Code, Section 25295. <br /> WATER NOT PI(ESENT IN TIIE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> \ < 1,0W I per Tank Fill OR Pump End of Tank <br /> I'm) - 10,000 2 per Tank 1 at each End of Tank <br /> > 10,001) 3 or More Ends and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> PIPING SOIL SAMPLES I I Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> >Y (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < f0,(") From wall next to tank <br /> Single Tank 2 en& at soil/ groundwater 1 <br /> Interface <br /> > 10,(X10 OR From wall next to lank <br /> Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> SLAB PRFSEN'1' 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 wlll allow sampling according to the above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES. <br /> # (0011ons) of SOIL SAMPLES I —i <br /> < 1,(11X) 3 per Tank Center and Ends OR Sides of Tank <br /> I ' <br /> 1,(1(1) - 10,000 5 per Tank Center and Ends OR Sides of Tank <br /> > I0,0W 5 OR More Per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> Ell 21 017 (Revised 7/10/92) Page 7 <br />