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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> _hhe following represents minimum sampling criterion required for closure compliance Soil samples collected shall be <br /> representative of native soils beneath the taurs invert (tants bottom) at a collection depth not to exceed 2 - 4 feet. If <br /> mtamination is documented during closure, an Unauthorized Release Notification must be completed and submitted <br /> thin five (5)woridng days pursuant to California Health & Safety Code,Section 25795. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINAQUM NUMBER LOCATION OF SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR Pump End of Tank <br /> 1 11000 10,000 2 per Tank 1 at each End of Tank <br /> > 10,0001{aro Ends and Middle OR generally <br /> p spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> TANK& PIPING STOCIPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PTT <br /> TANK TANK SIZE M]2iIM[UM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall nen to tank <br /> TSingle Tank 2 ends at soil/groundwater 1 1 <br /> interface f <br /> T > 10,000 OR From wall next to tank <br /> Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> SLAB PRESENT IN THE TANK PIT <br /> _oil samples shall be obtained beneath the slab within native soft 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 MRgIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1000 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 /> ZH 23 047 (Revimd 7/10/92) 't� Page 7 <br /> ?s 2.0 <br />