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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS ` <br /> The following represents minimum.sampling criterion required for closure.compliance. Soil samples collected shall'be <br /> representative of native soils beneath the tank's invert(tank's bottom) at a collection depth no[ to exceed 2-.4 fee[. If contamination <br /> ease Notification must be completed and submitted within five(5) working days <br /> is documented during closure, an Unauthorized Rel <br /> pursuant to California.Health& Safety Code, Section 25295. <br /> WATER NOT PRESENT IN TBE TAI PI T <br /> TANK TANK SIZE MINIMUNI NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR Pum.D End of Tank <br /> 1,000 - 10,00.0 2 2er 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 /> PIPINESOIPL,,SAMPLES I Sam le eve 20 lineal feet <br /> FEI <br /> TANG STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT D4 TANK PIT <br /> 7:1: <br /> NK SIZE MIINIiviUM NUMBER LOCATION of SOILyfININiUM NUMBER <br /> allons) of SOIL SAMPLES SAMPLES of WATER SAMPLES <br /> < 10,0{0 2 from wall next to tank <br /> Single Tank 3 ends at soil/groundwater 1" <br /> intertaer& l below rank <br /> 4 from wall next to rank <br /> 3 10,000 OR ends at soillgroundwater 1 <br /> Tank Cluster 5 or more interface & I below each <br /> tank <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through rhe obstruction will be required in order to <br /> collect the samples. (Physical removal of the obsuuction will allow sampling according to the above conditions.) <br /> TANK TANKS <br /> IZE MINIMUM NUMBER ` LOCATION of SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES � <br /> < 1 000 3 er Tank Center and Ends OR Sides of Tank <br /> 1,000 10.000_ 5 er Tank Center and i~nds OR Sides of Tank <br /> lO,OCfl S OR More per Tank Ends and Middle and generally spaced <br /> along the length of the Tank <br /> EH 23 046 (Revised 08113199) Page 7 <br />