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SAMI.—tNG PROTOCOL FOR ROUTINE TANK i_CMO VALS <br /> The following represefits minimum sampling criterion required for closure compliance. Soil samples colleaed shall be <br /> representative of native soils beneath the tank's invert (tanks 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) wonting 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 II <br /> (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fal OR Pump End of Tank <br /> 1,000 - 10,000 2 per Tank 1 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 $�QfihlS f.L. 1 Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards. <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER I LOCATION of SOIL MININfUM NUMBER of jl <br /> (Gallons) of SOIL SASWLES SAI PLES 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 I� <br /> Tank Cluster 4 ends at soil 1 <br /> groundwater interface <br /> SLAB PRESENT 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 obstruction will allow sampling according to the above conditions.) <br /> TANK TANK SIZE NENEvtUM NUMBERLOCATION of SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> < 1,000 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 /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> F-H 23 047 (Revised 7/10/92) Page 7 <br />