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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS • I ,rhe following represent:; minimum sampling cdterion required for"ure compliance. Son samples collected shall be representative of native soils beicath the taint's invert (tattk's bottom) at a collection depth not to'exceed 2 - 4 feet. 1:1' contamination is documented daring closure,an Unauthorized Release Notification must be Completed and submitted ' within five (5) working days pursuant to California Health & Safety Code, Section 25295. ' WATER O PRESENT IN WE TANK Prr 'TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES # (Gallons) of SOIL SAMPLES l .. c 1,000 1 per Tank r_ Fill OR Pump End of Ta--- 1,000 an _1,000 - 10,000 2 per Tank 1 at each End of Ya--n > 10,000 3 or More Ends and Middle OR generally per Tartk spaced along the length of the Tank PYPING AND STOCKPILE PIPING SOIL SAMPLES 1 Sample every 20 lineal feet TANK& PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards WATTR IS PRESENT IN TANK PIT LK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBERof (Gallons) of SOIL 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 SLAB PRESENT IN THE TANK PIT Soil samples shall be obtained beneath the slab within dative soils. Penetration through the obstruction will be reyuirot ii, of to collect the samples. (Physical removal of the obstruction will allow sampling according to the above wnditic),v.) "TANK TANK SIZE r MINIMUM NUMBER LOCA'T'ION of SOIL SAMPLES # (Gallons) of SOIL SAMPLES a 1,000 3 por Tank Center and Ends OR Sides of'Fink LOW - 10,000 5 prr Tattle Center and Ends OR Sides of'T'ank > 10,000 5 OR Moro per Tauk Ends and Middle and generally spacW. aloct;,, the length of the Tank . f Ll1 23 047 (Revised 7/,10/92) Pap 7