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;w <br /> SAMPLIN PROTOCOL FOR ROUTINE TANrK RUVALS <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shalt be <br /> representative of native soils beneath the tank's invert (tank's bottom) at a collectiori�depth not to exceed 2 - 4 feet. If <br /> contamination Is documented during closure, an Unauthorized Release NotiCcaation trust be completed and submitted <br /> within five (5) working days pursuant to California Health & Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT. <br /> it h <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 /> Ipoo - 10,000 2 per Tank I at each End of Tank <br /> > I0,{ 3 or More EndsIand Middle OR generally <br /> Xper Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE Ili <br /> �j. <br /> PIPING SOIL SAMPLES I Sample every 20 lineal feet <br /> TANK ,� PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRFESENT 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 /> rt <br /> > 10,000 OR From wall next to tank <br /> Tank Cluster 4 enols at soil/III I <br /> groundwater interface <br /> STAR PRESENT IN THE TANK RIT <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 /> # (dallon5) of SOIL SAMPLES <br /> < 1,000 3 per Tank Center and Ends OR Sides of Tank <br /> 1,00() - 10,0()0 5 per Tank Center and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the IengiFh of the Tank <br /> Ell 23 047 (Revised 7/10/92) Page 7 <br /> l� j� <br />