REMOVAL REMOVAL 1990 - Laserfiche WebLink

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9 0 SAN JO21-S2UIN LOL L HEP.LTIi DISrrRICT SAMPLING PROTOCAL FOR ROUTINE TANK REMOVALS The following re resents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative of native soils beneath the tank s invert (tank's bottom) at a collection depth not be exceed 2 - 9 feet. If contamination is stS documented during clojLHD sure, r an Unauthorized Release notification must be filled out and submitted on WATER NOT PRESENT IN THE, TANK PIT ........._._ TANK SIZE MINIMUM NUMBER ON LOCATION OC SOIL SAMPLES SOIL SAMPLES Less than 1000 gallons ONE per tank Fill or pump end of tank 1000 - 10,000 gallons TWO per tank One at each end of tank 10,001 gallons and up THREE OR MORE Ends and Middle or per tank generally spaced along Piping he leng h of e an ONE EVERY 20 LINEAL FEET WATER IS PRESENT IN TANK PIT TANK SIZE - 1 MINIM[MNO OF LOCATION OF SOIL MINIMUM NUMBER L SOIL SAMPLESSAMPLES 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 OTHER SPEC I AT. CONDITIONS SLAB PRESENT IN TANK PIT Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to collect the samples. (Physical removal of the obstruction will then allow sampling according to the above conditions.) TANK SIZE Less than 1000 gallons 1000 - 10,000 gallons 10,001 gallons and up EH 23 097 12/88 REVISED 1/89 MINIMUM NUMBER OF SOIL SAMPLES THREE per tank FIVE per tank FIVE OR MORE per tank LOCATION OF SOIL SAMPLES Center and ends or sides Center and ends or sides Ends and Middle and generally spaced along Ehe length of the tank