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SAiMPLINPROTOCOL FOR ROUTINE TA�YK REMOVALS <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> representative of native soils beneath the t'ank'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 <br /> five (5) working days. California Health 3,' Safety Code, Section 25295. <br /> WATER NOT PRE EN <br /> IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL'SAMPLES <br /> # (Gallons) of 50IL SAMPLES <br /> LOW 1' per Tank Fill OR Pump End'oflTank <br /> T' <br /> 4931,000 - 10,000 2; per Tank 1: at each End of Tank <br /> gra > 10,000.1 3. or More �. �" Ends and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> WATER 1S PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> r <br /> 10000: From wall!.next to tank <br /> Single Tank 2 'ends at soil/ groundwater 1 1 <br /> Interface J <br /> > <br /> 10,000 OR From wall next to tank II1 <br /> Tank Cluster 4 ends at soil/ I <br /> 'groundwater interface <br /> SLAM [IRI-SENT IN TIIE 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 /> I000 3 per Tank 7Cenand Ends OR Sides of Tank <br /> I,000 - 10,000 ;'�5 per Tank Ends OIR Sides of Tank> 10,000 5 OR More per Tank Middle and generally spaced alongof the Tari'k i <br /> r <br /> PIPING AND STOCKPILE. I <br /> PIPING SOIL SAIVIPLES I Sample every 20 lineal feet <br /> µ . <br /> y r+ TANK dr PIPING STOCKPILE SAMPLES 2 Samples every SO cubic yards <br /> EFI 23 447 (REV 4/23/91) <br /> Page 7 . <br />