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SAN .70AQUI N LOCAL, HEALTH rJ I S ra I CT SAMPLING PROTOCAL FOR ROUTINE TANK REMOVALS The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative of native soils beneath the tank's isvdocumented5duurringmclosure, aneUnauthoriizednReleaseXnotdificationemust beffilledcontamination d submitted to SJLHD within 5 days. Section 2652, CCR. WATER NOT PRESENT IN THE TANK PIT TANK SIZE MINIMUM NUMBER OF LOCATION OF SOIL SAMPLES SOIL SAMPLES Less than 1000 gallons 'ONE per tank Fill or pump end of tank 5-S-0 01;.S76- 1000 - 10,000 gallons TWO per tank One at each end of tankO! L (O 00 GAL iJ NL, 10,001 gallons and up THREE OR MORE Ends and Middle or 'GIBS o Ltnit Per tank enerally spaced along _ the length of the tank Piping_- -- ONE EVERY 20 LINEAL FEET WATER IS PRESENT IN TANK PIT TANK SIZE MINIMUM NO. OF LOCATION OF SOIL MINIMUM NUMBER SOIL SAMPLES SAMPLES OF WATER SAMPLES 10,000 GALLONS From wall next to OR LESS tank ends at soil/ (Single Tank) TWO groundwater ONE interface GREATER THAN From wall next to ONE 10,000 GALLONS tank ends at soil/ OR groundwater TANK CLUSTER _ _FOUR interface 0'r HER S P EC I AL CONDITION S SLAB PRESENT IN TANK PIT the Soil samples shall be obtained beneath the slab within native soils. Penetration throw h obstructiontwiillon wthenballo usamplingoaccordingotoethetabovemconditions kcal removal of the TANK SIZE' MINIMUM NUMBER OF -LOCATION OF SOIL SAMPLES SOIL SAMPLES Less than 1000 gallons THREE per tank -Center and ends or sides 1000 - 10,000 gallons FIVE per tank Center and ends or sides 10,001 gallons and up FIVE OR MORE per Ends and Middle and tank generall spaced along the leng h of the tank EH 23 047 12/88 REVISED 1/89 i