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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The following represents minimum sampling criterion required for closure contpllance. Sol[ samples collected shall be <br /> representative of native soils beneath the tank's Invert (tank's bollotrs) at a aitllectlon depth not to exceed 2 - 4 feet. If <br /> contamination Is documented during closure, an Unauthorized Release Nuflficatlon must be completed and submitted <br /> within five (5) working days pursuant to California Ilealth do Safety Code, Sectlon 25295. <br /> I� <br /> WATER ff OT PRESENT IN J'IIE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCA-1'18N Or SOIL SAMPLES <br /> # (Oallons) of SOIL SAMPLES <br /> < 1,000 1 per`yank FillOR Pump End of Tank <br /> 598 1,000 - 10,000 2 per Tank I at each'IEnd of Tank <br /> > 10,000 3 or More Ends and Middle OR generally <br /> PCF Tank spaced alri;ng the length of the Tank <br /> PIPING AND STOCKPILE I <br /> +� [PINO SOIL SAMPLES I Sample every.'20 lineal feet <br /> TANK do PIPINO STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> Ia . <br /> WATER IS 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 /> < 10,000 From wall next to;tank <br /> Single Tank 2 ends at soil/groundwater 1 <br /> Interface <br /> > 10,0(X) OR From wall next to�tank <br /> Tank Cluster 4 ends al solo 1 <br /> groundwalcr Interface <br /> 4 <br /> SIAII PRESENT IN 'I'll ETANK'l,1'I'T <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration 1hiough the obstruction will be required in <br /> order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above condilloiis.) <br /> i <br /> TANK TANK SIZE MINIMUM NUMBER LOCA'f'ION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 3I1e r Tank Center land Ends OR Sides of Tank <br /> 1,000 - 10,000 5 per Tank Cen(erl�and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> F11 23 047 (Revised 7/10/92) Page 7 , <br />