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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The foilowing represents minimum sampling crimnon required for closure compliance- Soil samples collected shall be <br /> represoatauve of nauve soils beneath the tank's invert (tank's bouam) at a collection depth not to exceed 2 - 4 fent. Lf <br /> contamination is documented during closure, an Unauthorized Release Notification must be completed and subnutted <br /> Within <br /> live (5) working days. California Health & Safety Cade, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINUdUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> i < 1.000 1 per Tank Fill OR Pump End of Tank <br /> 1.000 - 000 <br /> 2 per Tank 1 at each End of Tank <br /> 10,000 j 3 or More Ends and Middle OR generally <br /> Per Tank spaced along the length of the Tank <br /> WATER IS PRESENT IN TANK PTT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of <br /> # (Gallons) of SOIL.SAMPLES SAMPLES WATER SAMPLES <br /> < 10,000 From wall next to tank <br /> Single Tank 2 ends at soil/groundwater 1 <br /> interface <br /> Z 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 obtained beneath the slab wrthtn nauve sorts, Penetration through the obstruction will be required in <br /> order to collect the samples. (Physical removal of the obstruction will allow sampling according to the above condruons.) <br /> TANK TANK 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 <br /> generally spaced along <br /> the length of the Tank <br /> PIPING AND STOCKPILE <br /> iPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> TANK& PIPING STOCKPU-E SAMPLES 2 Samples every 50 cubic yards <br /> EH 23 047 (REV 4/23/91) PAGE 7 <br />