Laserfiche WebLink
1 0 <br /> SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The following represents minimum sampling criterion required for closure compliance Soil samples collected shall be <br /> Wontamination <br /> epresentative of native soils beneath the tank's invert (tank's bottom) at a collection depth not to exceed 2 - 4 feet If <br /> is documented during closure, an Unauthorized Release Notification must be completed and submitted <br /> within five (5) working days pursuant to California Health & Safety Code, Section 25295 <br /> WATER NOT PRESENT IN THE TANK PTT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> 1,000 1 per Tank Fill OR Pump End of Tank <br /> 1,000 - 10,000 2 per Tank i at e <br /> pt"h End of Tank <br /> > 10,000 3 or More and Middle OR generally <br /> per Tank aced along the length of the Tank <br /> PIPING AND STO ILE <br /> PIPING SOIL SAMPLES 6f1 Sample every 20 lineal feet <br /> TANK & PIPING STOCKPILE SAMPLE% 2 Samples every 50 cubic yards <br /> WA RESENT IN TANK PIT <br /> rTANK TANK S= MINI MBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOF.AAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall next to tank <br /> Single Tank \, / 2 ends at soil/groundwater 1 <br /> W 0 interface <br /> > 10,000 OR From wall next to tank <br /> Tank Cluster 4 ends at soil/ 1 <br /> groundwater interface <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obta ed beneath the slab within native soils Penetration through the obstruction will be required in <br /> order to collect the sam es (Physical removal of the obstruction will allow sampling according to the above conditions} <br /> TANK TANKS MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> # (Gallo ) of SOIL SAMPLES <br /> < 1,000 3 per Tank Center and Ends OR Sides of Tank <br /> 1,000 - 10,000 5 per Tank Center and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> EH 23 047 (Revised 7/10/92) Page 7 <br />