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fe SAMPLING pSOTOCOL FOR ROUTINE TANK REMOVALS owing represents minimum sampling crterion required for closure compliance. Soil samples collected shall be tative of native soils beneath the tank's iavert(tank's bottom) at a collection depth not to exceed 2 -4 feet. If ation is documented during closure, an 0 authorized Release Notification must be completed and submitted within five (5) days pursuant to California Health& Safery Code, Section 25295. WATER NOT PRESENT IN THE TANK PIT TANK TANK SIZE NI;NIMUM NUMBER LOCATION OF SOIL SAMPLES a (Gallons) or SOIL SAMPLES < 1,000 per Tank Fill OR Pumo End of Tank 1.000 - er Tank 1at each End of Tank 710`�o or More Ends and Middle OR generally r Tank spaced along the length of the Tank PIPING AND STOCKPILE PIPING SOIL SAMPLES 20 lineal feet I Sam le eve TANK & PIPING STOCKPIL;: SAMPLES 2 Samples every 50 cubic yards WA TER IS PRESENT IN TANK PIT TANK TANK SIZE MIN ''UM NUMBER LOCATION of SOIL MINIMUM NUMBER of (Gallons) of S 'L SAMPLES SAMPLES WATER SAMPLES < 10,000 From wall next to tank Single Tank 2 ends at soil/ groundwater 1 interface > 10,000 OR From wall next to tank Tank Cluster 4 ends at soil/ 1 groundwater interface S.".:1 B PRESENT IN THE TANK PIT Soil samples shall be obtained beneath the slab v;'; un native soils. Penetration through the obstruction will be required in order to collect the samples. (Physical removal of the obs ruction will allow sampling according to the above conditions.) TANK TANK SIZE AINIMUM NUMBER LOCATION of SOIL SAMPLES / (Gallons) f SOIL SAMPLES < 1,000 3 per Tank Center and Ends OR Sides of Tank 1,000 - 10,000 5 r Tank Center and Ends OR Sides of Tank > 10,000 5 OR More per Tank Ends and Middle and generally spaced along the length of the Tank EH 23 046 (Revised 10/19/98) Page