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4-06-1998 8:57Ah1 FROM TAIT SACRAMENTO 916 635 2606 . <br /> P. 9 <br /> ShWuNG PROTOCOL FOR ROtMNE TANK REMOVALS <br /> The following represents minimum sampling criterion required for closure eo1W1i2=. Soil samples collected shall be <br /> repnmenrative of narive soils beneath the tank's invert(tank's bottom)at a collection depth not to exceed 2 -4 fat. If <br /> contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted within five <br /> (5)working days pursuant w Califonria Health&Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> i <br /> TTA7NX7'rANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES(Gallons) of SOIL SAMPLES <br /> C 1,000 1 per Tank Fill OR Pump End of Tank <br /> 1,000 - 10,000 2 per Tank I at each W of Tonic <br /> > 1010003 or re Ends and Middle OR generally <br /> O/y spaced along the length of the Tank <br /> I LI per Tank <br /> PIPIING AND STOCXPILE <br /> i <br /> PIPING SOIL SAMPLES 1 Sample every ZO lineal fee <br /> TANK &PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PS ESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> I <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> 10,000 From wall next to tank <br /> (Y(i Single Tank 2 ends at soil!gr000dwater I <br /> interface <br /> > 1(3,000 OR From wall moxa to tank t <br /> (1 V) Tank Cluster 4 ends at <br /> groundwater <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 order <br /> to collect the samples. (Physical removal of the obstruction will allow sampling according to the above coaditi0w') <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> q (Gallons) of SOIL SAMPLES <br /> U V C 1.000 3 per Tank Center and H.uds OR Sides of Tank <br /> 1,000 - 10,000 5 per Tank Coater and Ends OR Sides of Tank <br /> to wo 5 OR More per Tank Ends and Middle and generally Vaud along <br /> U ( U the length of tho Tank <br /> EH 23 046 (Revised 9!11/94) Page 7 <br />