Laserfiche WebLink
SAMPLING PROTOCOL FOR ROUTINE TANK REMOyALS <br /> The Sollowing represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> representative bf native soils beneath the tank's invert (tank's bottom) at a collection depth not to exceed 2 -4 feet. If <br /> contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted within five (5) <br /> working days pursuant to California Health& Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 1 per Tank Fill OR Pum End of Tank <br /> 1,000 - 10,000 2 _per Tank I at each End of Tank <br /> > 10,000 3 or More Ends and Middle OR. generally <br /> per Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> PIPING SOIL SAMPLES 1 Sam le eve 20 lineal feet <br /> TANK& PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER <br /> # (Gallons) of SOIL SAMPLES SAMPLES of WATER SAMPLES <br /> < 10,000 2 from wall next to tank <br /> Single Tank 3 ends at soil/groundwater 1 <br /> interface& 1 below tank <br /> 4 from wall next to tank <br /> > 10,000 OR ends at soil/groundwater <br /> Tank Cluster 5 or more interface & 1 below each 1 <br /> tank <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to <br /> collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br /> ETANKTANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> (Gallons) 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 <br /> along the length of the Tank <br /> EH 23 046 (Revised 08113/99) Page 7 <br />