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1 0 • <br /> SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> I <br /> �e following represents minimum sampling criterion required for closure compliance Soil samples collected shall be <br /> �Tepresentative 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 <br /> "thin five (5) working days pursuant to California Health & Safety Code, Section 25295 <br /> WATER NOT PRESENT IN THE TANK PIT <br />' TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br />' < 1 000 1 per Tank Fill OR Pump End of Tank <br /> Ol 549 1,000 - 10,000 2 per Tank i at each End of Tank <br />' > 10,000 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 Sample every 20 lineal feet <br />' TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT MINIMUM <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 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 T1IE 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 will allow sampling according to the above conditions) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br />' 1000 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,t]IXl 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> EH 23 047 (Revised 7/10/92) Page 7 <br /> 1 <br />