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SAMPLINO PRO f OCOL FOR ROUT INE TANK REMOVALS The following represents minimum sampling criterion required for closure compliance Soil samples collected shall be Aicsentalive of native soils beneath the tank's Invert (tank's bollom) at a collection depth nol to exceed 2 - + feet If nlnallon Is documented during closure, an Unaulhorl7,ed Release Nollficatlon mustbe completed and submitted five (5) working days pursuant to California I lealth de Safely Code, Section 25295 WA 1 ERIfU p P>ZF,SFN r IN 1 fig TANK 1'f r TANK 'I ANK SIZE MINIMUM NUMBER LOCA 1 XON OF SOIL SAMPLES M (Gallons) of SOIL SAMPLES < 1,000 1 per lank Tall Olt Pump End of Tank 11 O � -2,1,(X1) - 10,000 2 per Tank I at each End of Tank CP > IO,0(X) 3 or More Ends and Middle OR generally per I ank spaced along the length of the rank PIPING; AND SIOCKPII.E PiPINU SOIL SAMPLES 1 Sample every 20 lineal feel TANK & PIPINO S 1 OCKPILF SAMPLES 2 Sampias every W cubic yards WA I ER Ig I'RESEN 11N TANK PI r 16K 1 ANK SIZE MINIMUM NUMBER LOCAT ION of SOIL MINIMUM NUMBER of ((faflnns) of SOIL SAMPI ITS SAMPLES WATEIt SAMPLES < 10,(X)0 From wall next to tank Single T ank 2 ends at sol)groundwater t interlace > 10,)(10 OR From wall next to lank 1 ank Cluster 4 ends at soll/ l groundwater interface SIAII PI(ESENT IN 7 IIF.TANK I I r Stoll samplrt shall be obtained beneath the slab within native soils Penetration through the obsutiction will be required In order to collect the samples (Physical removal of the obstruction will allow sampling according to the above conditions) TANK T ANK SIZE MINIMUM NUMBER LOCA I[ON of SOIL SAMPLCS ((Jallons) of SOIL SAMPLES < I,U)U 3 per Tank Ccnler and Ends OR Sides of Tank } 1,0)0 - 10,1XX) 5 per Tank Center and Ends OR Sides of Tank > 10,(X)0 5 Olt More per Tank Ends and Middle and generally spaced along the length of the rank Fit 23 047 (ReAsed 7/10/92) Page 7