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i <br /> SAMPLIN&IfROTOCOL FOR ROUTINE TANK REPreVALS <br /> 'Ihe following represents minimum sampling criterion required for closure compliance. Soli samples collected shall be <br /> representative or 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 /> within five (5) working days pursuant to California Health & Safety Code, Section 25295. <br /> WA'I'EIt NUr PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (gallons) of SOIL SAMPLES <br /> < 1,000 I per Tank Fill OR Pump End of Tank <br /> I'm) - 10,000 2 per 'Tank I at each End of Tank <br /> > 10,(XX) 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 PPC <br /> TANK TANK SIZE MINIMUM NUMBER I LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < 10,0110 From wall next to tank <br /> Single Tank 2 ends at soil/groundwater 1 <br /> Interface <br /> > 10,((X) OR From wall next to tank <br /> Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> SLAB PRESEN'r 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 obs(ructlon will allow sampling according to the above conditions.) <br /> TANK ,TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES, <br /> !! I (0010m) of SOIL SAMPLES <br /> < 3 per Tank Center and Ends OR Sides of Tank <br /> 1,(X10 - (0,000 5 per Tank Center and Ends OR Sides of Tank <br /> > IB,uW 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> Ell 23 047 (Revised 7/10/92) Page 7 <br />