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SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative <br /> of native soils beneath the tank's invert(tank's bottom)at a collection depth not to exceed 2-4 feet. If contamination is documented <br /> during closure,an Unauthorized Release Notification must be completed and submitted within five(5)working days pursuant to <br /> California Health&Safety Code,Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF Sha U, <br /> # (Gallons) of SOIL SAMPLES <br /> V�- <1,000 1 per Tank Fill OR Pump End of Tank <br /> 1,000- 10,000 2 per Tank I I:at each End of Tank <br /> > 10,000 - 3 or More Ends and Middle OR generally <br /> per Tank Tspaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> X PIPING SOIL SAMPLES I Sample every 20 lineal feet <br /> Zv TANK&PIPING STOCKPILE SAMPLES 2 Samples every 50 cubie�yards, <br /> 6- <br /> WATER IS PRESENTII 1. ' 4lP <br /> TANK TANK SIZE MINIMUM NUMBER I OCxmmlq of SOIL MINIMUMNUMBER# (Gallons) of SOIL SAMPLES ry of WATER SAMPLES <br /> F' < 10 000 2 to.tank ends <br /> p( �( Single Tank 3 atso r interface 1 <br /> tank <br /> >10,000 OR 4 <br /> Tank Cluster 5 or more at saifl;, _ j; iittetface I <br /> & <br /> SLAB PRESENT IN THE TANK PTT <br /> Soil samples shall be obtained beneath the slab withinnalive-soils:Penetration.through the obstructidt will be required in order to <br /> collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> p11 AY^ (Gallons) of SOIL SAMPLES <br /> �Q <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 07/31/08) 7 <br />