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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> 1 • • <br /> i ae following represents minimum sampling cricerion required for closure compliance. Soil samples collected shall be <br /> r earesentative of 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 Unawhorze.d Release Notification must be completed and submitted within rive <br /> ,5) working days pursuant to California Health& Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER I LOCATION OF SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> 64/ ( < 1,000 1 per Tank Fill OR Pump End of Tank <br /> A//A I 1,000 - 10,000 2 per Tank I 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 /> 21,z2, L3, 2.41 ZS ZG,Z} PIPING AND STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> I <br /> TANK & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> i <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL , INIMUM NUMBER of <br /> , <br /> ;; (Gallons) I of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall ne= to tank <br /> Single Tank 2 ends at soil/groundwater I <br /> inte:face <br /> > 10,000 OR From wall next to tank <br /> aj1x� Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> SLAB PRESENT IN TEE TANK PTT <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order <br /> to collect the samples. (Physical removal of the obstruction will allow sampling arding to the above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> 6LI I < 1,000 3 per Tanis Center and Ends OR Sides of Tank <br /> 1,000 - 10,000 5 per Tank Center and Ends OR Sides of Tank <br /> ��2T > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> H 23 046 (Revised 9/11/96) Page 7 <br />